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FFmpeg/libavformat/mxfenc.c

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  1. /*

  2.  * MXF muxer

  3.  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>

  4.  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>

  5.  *

  6.  * This file is part of FFmpeg.

  7.  *

  8.  * FFmpeg is free software; you can redistribute it and/or

  9.  * modify it under the terms of the GNU Lesser General Public

  10.  * License as published by the Free Software Foundation; either

  11.  * version 2.1 of the License, or (at your option) any later version.

  12.  *

  13.  * FFmpeg is distributed in the hope that it will be useful,

  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  16.  * Lesser General Public License for more details.

  17.  *

  18.  * You should have received a copy of the GNU Lesser General Public

  19.  * License along with FFmpeg; if not, write to the Free Software

  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  21.  */

  22. 

  23. /*

  24.  * signal_standard, color_siting, store_user_comments, sample rate and klv_fill_key version

  25.  * fixes sponsored by NOA GmbH

  26.  */

  27. 

  28. /*

  29.  * References

  30.  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value

  31.  * SMPTE 377M MXF File Format Specifications

  32.  * SMPTE 379M MXF Generic Container

  33.  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container

  34.  * SMPTE 422M Mapping JPEG 2000 Codestreams into the MXF Generic Container

  35.  * SMPTE RP210: SMPTE Metadata Dictionary

  36.  * SMPTE RP224: Registry of SMPTE Universal Labels

  37.  */

  38. 

  39. #include <inttypes.h>

  40. #include <math.h>

  41. #include <time.h>

  42. 

  43. #include "libavutil/opt.h"

  44. #include "libavutil/random_seed.h"

  45. #include "libavutil/timecode.h"

  46. #include "libavutil/avassert.h"

  47. #include "libavutil/pixdesc.h"

  48. #include "libavutil/time_internal.h"

  49. #include "libavcodec/bytestream.h"

  50. #include "libavcodec/dnxhddata.h"

  51. #include "libavcodec/dv_profile.h"

  52. #include "libavcodec/h264_ps.h"

  53. #include "libavcodec/golomb.h"

  54. #include "libavcodec/internal.h"

  55. #include "audiointerleave.h"

  56. #include "avformat.h"

  57. #include "avio_internal.h"

  58. #include "internal.h"

  59. #include "avc.h"

  60. #include "mxf.h"

  61. #include "config.h"

  62. 

  63. extern AVOutputFormat ff_mxf_d10_muxer;

  64. extern AVOutputFormat ff_mxf_opatom_muxer;

  65. 

  66. #define EDIT_UNITS_PER_BODY 250

  67. #define KAG_SIZE 512

  68. 

  69. typedef struct MXFLocalTagPair {

  70.     int local_tag;

  71.     UID uid;

  72. } MXFLocalTagPair;

  73. 

  74. typedef struct MXFIndexEntry {

  75.     uint64_t offset;

  76.     unsigned slice_offset; ///< offset of audio slice

  77.     uint16_t temporal_ref;

  78.     uint8_t flags;

  79. } MXFIndexEntry;

  80. 

  81. typedef struct MXFStreamContext {

  82.     AudioInterleaveContext aic;

  83.     UID track_essence_element_key;

  84.     int index;               ///< index in mxf_essence_container_uls table

  85.     const UID *codec_ul;

  86.     const UID *container_ul;

  87.     int order;               ///< interleaving order if dts are equal

  88.     int interlaced;          ///< whether picture is interlaced

  89.     int field_dominance;     ///< tff=1, bff=2

  90.     int component_depth;

  91.     int color_siting;

  92.     int signal_standard;

  93.     int h_chroma_sub_sample;

  94.     int v_chroma_sub_sample;

  95.     int temporal_reordering;

  96.     AVRational aspect_ratio; ///< display aspect ratio

  97.     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing

  98.     int video_bit_rate;

  99.     int slice_offset;

  100.     int frame_size;          ///< frame size in bytes

  101.     int seq_closed_gop;      ///< all gops in sequence are closed, used in mpeg-2 descriptor

  102.     int max_gop;             ///< maximum gop size, used by mpeg-2 descriptor

  103.     int b_picture_count;     ///< maximum number of consecutive b pictures, used in mpeg-2 descriptor

  104.     int low_delay;           ///< low delay, used in mpeg-2 descriptor

  105.     int avc_intra;

  106. } MXFStreamContext;

  107. 

  108. typedef struct MXFContainerEssenceEntry {

  109.     UID container_ul;

  110.     UID element_ul;

  111.     UID codec_ul;

  112.     void (*write_desc)(AVFormatContext *, AVStream *);

  113. } MXFContainerEssenceEntry;

  114. 

  115. typedef struct MXFPackage {

  116.     char *name;

  117.     enum MXFMetadataSetType type;

  118.     int instance;

  119.     struct MXFPackage *ref;

  120. } MXFPackage;

  121. 

  122. enum ULIndex {

  123.     INDEX_MPEG2 = 0,

  124.     INDEX_AES3,

  125.     INDEX_WAV,

  126.     INDEX_D10_VIDEO,

  127.     INDEX_D10_AUDIO,

  128.     INDEX_DV,

  129.     INDEX_DNXHD,

  130.     INDEX_JPEG2000,

  131.     INDEX_H264,

  132.     INDEX_S436M,

  133.     INDEX_PRORES,

  134. };

  135. 

  136. static const struct {

  137.     enum AVCodecID id;

  138.     enum ULIndex index;

  139. } mxf_essence_mappings[] = {

  140.     { AV_CODEC_ID_MPEG2VIDEO, INDEX_MPEG2 },

  141.     { AV_CODEC_ID_PCM_S24LE,  INDEX_AES3 },

  142.     { AV_CODEC_ID_PCM_S16LE,  INDEX_AES3 },

  143.     { AV_CODEC_ID_DVVIDEO,    INDEX_DV },

  144.     { AV_CODEC_ID_DNXHD,      INDEX_DNXHD },

  145.     { AV_CODEC_ID_JPEG2000,   INDEX_JPEG2000 },

  146.     { AV_CODEC_ID_H264,       INDEX_H264 },

  147.     { AV_CODEC_ID_PRORES,     INDEX_PRORES },

  148.     { AV_CODEC_ID_NONE }

  149. };

  150. 

  151. static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);

  152. static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);

  153. static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);

  154. static void mxf_write_h264_desc(AVFormatContext *s, AVStream *st);

  155. static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);

  156. static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);

  157. static void mxf_write_s436m_anc_desc(AVFormatContext *s, AVStream *st);

  158. 

  159. static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {

  160.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },

  161.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  162.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  163.       mxf_write_mpegvideo_desc },

  164.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },

  165.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },

  166.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  167.       mxf_write_aes3_desc },

  168.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },

  169.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },

  170.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  171.       mxf_write_wav_desc },

  172.     // D-10 Video

  173.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },

  174.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  175.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },

  176.       mxf_write_cdci_desc },

  177.     // D-10 Audio

  178.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },

  179.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  180.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  181.       mxf_write_generic_sound_desc },

  182.     // DV

  183.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },

  184.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  185.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },

  186.       mxf_write_cdci_desc },

  187.     // DNxHD

  188.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  189.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  190.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },

  191.       mxf_write_cdci_desc },

  192.     // JPEG2000

  193.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },

  194.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },

  195.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },

  196.       mxf_write_cdci_desc },

  197.     // H.264

  198.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },

  199.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  200.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  201.       mxf_write_h264_desc },

  202.     // S436M ANC

  203.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 },

  204.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x17,0x01,0x02,0x00 },

  205.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x01,0x5C,0x00 },

  206.       mxf_write_s436m_anc_desc },

  207.     // ProRes

  208.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x0d,0x01,0x03,0x01,0x02,0x1c,0x01,0x00 },

  209.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x17,0x00 },

  210.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x03,0x00 },

  211.       mxf_write_cdci_desc },

  212.     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  213.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  214.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  215.       NULL },

  216. };

  217. 

  218. static const UID mxf_d10_codec_uls[] = {

  219.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 }, // D-10 625/50 PAL 50mb/s

  220.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 }, // D-10 525/50 NTSC 50mb/s

  221.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 }, // D-10 625/50 PAL 40mb/s

  222.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 }, // D-10 525/50 NTSC 40mb/s

  223.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 }, // D-10 625/50 PAL 30mb/s

  224.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 }, // D-10 525/50 NTSC 30mb/s

  225. };

  226. 

  227. static const UID mxf_d10_container_uls[] = {

  228.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, // D-10 625/50 PAL 50mb/s

  229.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 }, // D-10 525/50 NTSC 50mb/s

  230.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 }, // D-10 625/50 PAL 40mb/s

  231.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 }, // D-10 525/50 NTSC 40mb/s

  232.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 }, // D-10 625/50 PAL 30mb/s

  233.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 }, // D-10 525/50 NTSC 30mb/s

  234. };

  235. 

  236. typedef struct MXFContext {

  237.     AVClass *av_class;

  238.     int64_t footer_partition_offset;

  239.     int essence_container_count;

  240.     AVRational time_base;

  241.     int header_written;

  242.     MXFIndexEntry *index_entries;

  243.     unsigned edit_units_count;

  244.     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)

  245.     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)

  246.     int last_indexed_edit_unit;

  247.     uint64_t *body_partition_offset;

  248.     unsigned body_partitions_count;

  249.     int last_key_index;  ///< index of last key frame

  250.     uint64_t duration;

  251.     AVTimecode tc;       ///< timecode context

  252.     AVStream *timecode_track;

  253.     int timecode_base;       ///< rounded time code base (25 or 30)

  254.     int edit_unit_byte_count; ///< fixed edit unit byte count

  255.     int content_package_rate; ///< content package rate in system element, see SMPTE 326M

  256.     uint64_t body_offset;

  257.     uint32_t instance_number;

  258.     uint8_t umid[16];        ///< unique material identifier

  259.     int channel_count;

  260.     int signal_standard;

  261.     uint32_t tagged_value_count;

  262.     AVRational audio_edit_rate;

  263.     int store_user_comments;

  264.     int track_instance_count; // used to generate MXFTrack uuids

  265.     int cbr_index;           ///< use a constant bitrate index

  266. } MXFContext;

  267. 

  268. static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };

  269. static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };

  270. 

  271. /**

  272.  * complete key for operation pattern, partitions, and primer pack

  273.  */

  274. static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };

  275. static const uint8_t opatom_ul[]                   = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x02,0x01,0x10,0x03,0x00,0x00 };

  276. static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete

  277. static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };

  278. static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };

  279. static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };

  280. static const uint8_t header_open_partition_key[]   = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }; // OpenIncomplete

  281. static const uint8_t header_closed_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete

  282. static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };

  283. static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete

  284. 

  285. /**

  286.  * partial key for header metadata

  287.  */

  288. static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };

  289. static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };

  290. 

  291. /**

  292.  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html

  293.  *             https://smpte-ra.org/sites/default/files/Labels.xml

  294.  */

  295. static const MXFLocalTagPair mxf_local_tag_batch[] = {

  296.     // preface set

  297.     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */

  298.     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */

  299.     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */

  300.     { 0x3B07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x04,0x00,0x00,0x00}}, /* Object Model Version */

  301.     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */

  302.     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */

  303.     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */

  304.     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */

  305.     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */

  306.     // Identification

  307.     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */

  308.     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */

  309.     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */

  310.     { 0x3C03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x04,0x00,0x00,0x00}}, /* Product Version */

  311.     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */

  312.     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */

  313.     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */

  314.     { 0x3C07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x0A,0x00,0x00,0x00}}, /* Toolkit Version */

  315.     { 0x3C08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x06,0x01,0x00,0x00}}, /* Platform */

  316.     // Content Storage

  317.     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */

  318.     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */

  319.     // Essence Container Data

  320.     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */

  321.     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */

  322.     // Package

  323.     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */

  324.     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */

  325.     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */

  326.     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */

  327.     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */

  328.     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */

  329.     // Track

  330.     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */

  331.     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */

  332.     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */

  333.     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */

  334.     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */

  335.     // Sequence

  336.     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */

  337.     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */

  338.     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */

  339.     // Source Clip

  340.     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */

  341.     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */

  342.     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */

  343.     // Timecode Component

  344.     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */

  345.     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */

  346.     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */

  347.     // File Descriptor

  348.     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */

  349.     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */

  350.     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */

  351.     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */

  352.     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */

  353.     // Generic Picture Essence Descriptor

  354.     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */

  355.     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */

  356.     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */

  357.     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */

  358.     { 0x3216, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x03,0x02,0x08,0x00,0x00,0x00}}, /* Stored F2 Offset */

  359.     { 0x3205, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x08,0x00,0x00,0x00}}, /* Sampled Width */

  360.     { 0x3204, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x07,0x00,0x00,0x00}}, /* Sampled Height */

  361.     { 0x3206, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x09,0x00,0x00,0x00}}, /* Sampled X Offset */

  362.     { 0x3207, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0A,0x00,0x00,0x00}}, /* Sampled Y Offset */

  363.     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */

  364.     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */

  365.     { 0x320A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0D,0x00,0x00,0x00}}, /* Display X offset */

  366.     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */

  367.     { 0x3217, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x03,0x02,0x07,0x00,0x00,0x00}}, /* Display F2 offset */

  368.     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */

  369.     { 0x3210, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x02,0x01,0x01,0x01,0x02,0x00}}, /* Transfer characteristic */

  370.     { 0x3213, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x18,0x01,0x02,0x00,0x00,0x00,0x00}}, /* Image Start Offset */

  371.     { 0x3214, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x18,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Image End Offset */

  372.     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */

  373.     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */

  374.     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */

  375.     // CDCI Picture Essence Descriptor

  376.     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */

  377.     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */

  378.     { 0x3308, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x01,0x10,0x00,0x00,0x00}}, /* Vertical Subsampling */

  379.     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */

  380.     { 0x3307, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x18,0x01,0x04,0x00,0x00,0x00,0x00}}, /* Padding Bits */

  381.     { 0x3304, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x03,0x03,0x00,0x00,0x00}}, /* Black Ref level */

  382.     { 0x3305, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x03,0x04,0x00,0x00,0x00}}, /* White Ref level */

  383.     { 0x3306, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x05,0x00,0x00,0x00}}, /* Color Range */

  384.     // Generic Sound Essence Descriptor

  385.     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */

  386.     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */

  387.     { 0x3D04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x02,0x01,0x01,0x03,0x00,0x00,0x00}}, /* Audio Ref Level */

  388.     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */

  389.     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */

  390.     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */

  391.     // Index Table Segment

  392.     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */

  393.     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */

  394.     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */

  395.     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */

  396.     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */

  397.     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */

  398.     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */

  399.     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */

  400.     // MPEG video Descriptor

  401.     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */

  402.     { 0x8003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x05,0x00,0x00}}, /* LowDelay */

  403.     { 0x8004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x06,0x00,0x00}}, /* ClosedGOP */

  404.     { 0x8006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x08,0x00,0x00}}, /* MaxGOP */

  405.     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */

  406.     { 0x8008, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x09,0x00,0x00}}, /* BPictureCount */

  407.     // Wave Audio Essence Descriptor

  408.     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */

  409.     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */

  410. };

  411. 

  412. static const MXFLocalTagPair mxf_avc_subdescriptor_local_tags[] = {

  413.     { 0x8100, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x04,0x06,0x10,0x00,0x00}}, /* SubDescriptors */

  414.     { 0x8200, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x0E,0x04,0x01,0x06,0x06,0x01,0x0E,0x00,0x00}}, /* AVC Decoding Delay */

  415.     { 0x8201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x0E,0x04,0x01,0x06,0x06,0x01,0x0A,0x00,0x00}}, /* AVC Profile */

  416.     { 0x8202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x0E,0x04,0x01,0x06,0x06,0x01,0x0D,0x00,0x00}}, /* AVC Level */

  417. };

  418. 

  419. static const MXFLocalTagPair mxf_user_comments_local_tag[] = {

  420.     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */

  421.     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */

  422.     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */

  423. };

  424. 

  425. static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)

  426. {

  427.     avio_write(pb, uuid_base, 12);

  428.     avio_wb16(pb, type);

  429.     avio_wb16(pb, value);

  430. }

  431. 

  432. static void mxf_write_umid(AVFormatContext *s, int type)

  433. {

  434.     MXFContext *mxf = s->priv_data;

  435.     avio_write(s->pb, umid_ul, 13);

  436.     avio_wb24(s->pb, mxf->instance_number);

  437.     avio_write(s->pb, mxf->umid, 15);

  438.     avio_w8(s->pb, type);

  439. }

  440. 

  441. static void mxf_write_refs_count(AVIOContext *pb, int ref_count)

  442. {

  443.     avio_wb32(pb, ref_count);

  444.     avio_wb32(pb, 16);

  445. }

  446. 

  447. static int klv_ber_length(uint64_t len)

  448. {

  449.     if (len < 128)

  450.         return 1;

  451.     else

  452.         return (av_log2(len) >> 3) + 2;

  453. }

  454. 

  455. static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)

  456. {

  457.     // Determine the best BER size

  458.     int size = klv_ber_length(len);

  459.     if (size == 1) {

  460.         //short form

  461.         avio_w8(pb, len);

  462.         return 1;

  463.     }

  464. 

  465.     size --;

  466.     // long form

  467.     avio_w8(pb, 0x80 + size);

  468.     while(size) {

  469.         size--;

  470.         avio_w8(pb, len >> 8 * size & 0xff);

  471.     }

  472.     return 0;

  473. }

  474. 

  475. static void klv_encode_ber4_length(AVIOContext *pb, int len)

  476. {

  477.     avio_w8(pb, 0x80 + 3);

  478.     avio_wb24(pb, len);

  479. }

  480. 

  481. static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len)

  482. {

  483.     avio_w8(pb, 0x80 + 8);

  484.     avio_wb64(pb, len);

  485. }

  486. 

  487. /*

  488.  * Get essence container ul index

  489.  */

  490. static int mxf_get_essence_container_ul_index(enum AVCodecID id)

  491. {

  492.     int i;

  493.     for (i = 0; mxf_essence_mappings[i].id; i++)

  494.         if (mxf_essence_mappings[i].id == id)

  495.             return mxf_essence_mappings[i].index;

  496.     return -1;

  497. }

  498. 

  499. static void mxf_write_local_tags(AVIOContext *pb, const MXFLocalTagPair *local_tags, int count)

  500. {

  501.     int i;

  502.     for (i = 0; i < count; i++) {

  503.         avio_wb16(pb, local_tags[i].local_tag);

  504.         avio_write(pb, local_tags[i].uid, 16);

  505.     }

  506. }

  507. 

  508. static void mxf_write_primer_pack(AVFormatContext *s)

  509. {

  510.     MXFContext *mxf = s->priv_data;

  511.     AVIOContext *pb = s->pb;

  512.     int local_tag_number, i = 0;

  513.     int avc_tags_count = 0;

  514. 

  515.     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);

  516.     local_tag_number += mxf->store_user_comments * FF_ARRAY_ELEMS(mxf_user_comments_local_tag);

  517. 

  518.     for (i = 0; i < s->nb_streams; i++) {

  519.         MXFStreamContext *sc = s->streams[i]->priv_data;

  520.         if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_H264 && !sc->avc_intra) {

  521.             avc_tags_count = FF_ARRAY_ELEMS(mxf_avc_subdescriptor_local_tags);

  522.             local_tag_number += avc_tags_count;

  523.         }

  524.     }

  525. 

  526.     avio_write(pb, primer_pack_key, 16);

  527.     klv_encode_ber_length(pb, local_tag_number * 18 + 8);

  528. 

  529.     avio_wb32(pb, local_tag_number); // local_tag num

  530.     avio_wb32(pb, 18); // item size, always 18 according to the specs

  531. 

  532.     for (i = 0; i < FF_ARRAY_ELEMS(mxf_local_tag_batch); i++) {

  533.         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);

  534.         avio_write(pb, mxf_local_tag_batch[i].uid, 16);

  535.     }

  536.     if (mxf->store_user_comments)

  537.         for (i = 0; i < FF_ARRAY_ELEMS(mxf_user_comments_local_tag); i++) {

  538.             avio_wb16(pb, mxf_user_comments_local_tag[i].local_tag);

  539.             avio_write(pb, mxf_user_comments_local_tag[i].uid, 16);

  540.         }

  541.     if (avc_tags_count > 0)

  542.         mxf_write_local_tags(pb, mxf_avc_subdescriptor_local_tags, avc_tags_count);

  543. }

  544. 

  545. static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)

  546. {

  547.     avio_wb16(pb, tag);

  548.     avio_wb16(pb, size);

  549. }

  550. 

  551. static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)

  552. {

  553.     avio_write(pb, header_metadata_key, 13);

  554.     avio_wb24(pb, value);

  555. }

  556. 

  557. static const MXFCodecUL *mxf_get_data_definition_ul(int type)

  558. {

  559.     const MXFCodecUL *uls = ff_mxf_data_definition_uls;

  560.     while (uls->uid[0]) {

  561.         if (type == uls->id)

  562.             break;

  563.         uls++;

  564.     }

  565.     return uls;

  566. }

  567. 

  568. //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors

  569. #define DESCRIPTOR_COUNT(essence_container_count) \

  570.     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)

  571. 

  572. static void mxf_write_essence_container_refs(AVFormatContext *s)

  573. {

  574.     MXFContext *c = s->priv_data;

  575.     AVIOContext *pb = s->pb;

  576.     int i;

  577. 

  578.     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));

  579.     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);

  580.     for (i = 0; i < s->nb_streams; i++) {

  581.         MXFStreamContext *sc = s->streams[i]->priv_data;

  582.         // check first track of essence container type and only write it once

  583.         if (sc->track_essence_element_key[15] != 0)

  584.             continue;

  585.         avio_write(pb, *sc->container_ul, 16);

  586.         if (c->essence_container_count == 1)

  587.             break;

  588.     }

  589. 

  590.     if (c->essence_container_count > 1)

  591.         avio_write(pb, multiple_desc_ul, 16);

  592. }

  593. 

  594. static void mxf_write_preface(AVFormatContext *s)

  595. {

  596.     MXFContext *mxf = s->priv_data;

  597.     AVIOContext *pb = s->pb;

  598. 

  599.     mxf_write_metadata_key(pb, 0x012f00);

  600.     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);

  601.     klv_encode_ber_length(pb, 138 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));

  602. 

  603.     // write preface set uid

  604.     mxf_write_local_tag(pb, 16, 0x3C0A);

  605.     mxf_write_uuid(pb, Preface, 0);

  606.     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);

  607. 

  608.     // last modified date

  609.     mxf_write_local_tag(pb, 8, 0x3B02);

  610.     avio_wb64(pb, mxf->timestamp);

  611. 

  612.     // write version

  613.     mxf_write_local_tag(pb, 2, 0x3B05);

  614.     avio_wb16(pb, 259); // v1.3

  615. 

  616.     // Object Model Version

  617.     mxf_write_local_tag(pb, 4, 0x3B07);

  618.     avio_wb32(pb, 1);

  619. 

  620.     // write identification_refs

  621.     mxf_write_local_tag(pb, 16 + 8, 0x3B06);

  622.     mxf_write_refs_count(pb, 1);

  623.     mxf_write_uuid(pb, Identification, 0);

  624. 

  625.     // write content_storage_refs

  626.     mxf_write_local_tag(pb, 16, 0x3B03);

  627.     mxf_write_uuid(pb, ContentStorage, 0);

  628. 

  629.     // operational pattern

  630.     mxf_write_local_tag(pb, 16, 0x3B09);

  631.     if (s->oformat == &ff_mxf_opatom_muxer)

  632.         avio_write(pb, opatom_ul, 16);

  633.     else

  634.         avio_write(pb, op1a_ul, 16);

  635. 

  636.     // write essence_container_refs

  637.     mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);

  638.     mxf_write_essence_container_refs(s);

  639. 

  640.     // write dm_scheme_refs

  641.     mxf_write_local_tag(pb, 8, 0x3B0B);

  642.     avio_wb64(pb, 0);

  643. }

  644. 

  645. /*

  646.  * Returns the length of the UTF-16 string, in 16-bit characters, that would result

  647.  * from decoding the utf-8 string.

  648.  */

  649. static uint64_t mxf_utf16len(const char *utf8_str)

  650. {

  651.     const uint8_t *q = utf8_str;

  652.     uint64_t size = 0;

  653.     while (*q) {

  654.         uint32_t ch;

  655.         GET_UTF8(ch, *q++, goto invalid;)

  656.         if (ch < 0x10000)

  657.             size++;

  658.         else

  659.             size += 2;

  660.         continue;

  661. invalid:

  662.         av_log(NULL, AV_LOG_ERROR, "Invalid UTF8 sequence in mxf_utf16len\n\n");

  663.     }

  664.     size += 1;

  665.     return size;

  666. }

  667. 

  668. /*

  669.  * Returns the calculated length a local tag containing an utf-8 string as utf-16

  670.  */

  671. static int mxf_utf16_local_tag_length(const char *utf8_str)

  672. {

  673.     uint64_t size;

  674. 

  675.     if (!utf8_str)

  676.         return 0;

  677. 

  678.     size = mxf_utf16len(utf8_str);

  679.     if (size >= UINT16_MAX/2) {

  680.         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);

  681.         return 0;

  682.     }

  683. 

  684.     return 4 + size * 2;

  685. }

  686. 

  687. /*

  688.  * Write a local tag containing an utf-8 string as utf-16

  689.  */

  690. static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)

  691. {

  692.     uint64_t size = mxf_utf16len(value);

  693. 

  694.     if (size >= UINT16_MAX/2) {

  695.         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);

  696.         return;

  697.     }

  698. 

  699.     mxf_write_local_tag(pb, size*2, tag);

  700.     avio_put_str16be(pb, value);

  701. }

  702. 

  703. static void store_version(AVFormatContext *s){

  704.     AVIOContext *pb = s->pb;

  705. 

  706.     if (s->flags & AVFMT_FLAG_BITEXACT) {

  707.         avio_wb16(pb, 0); // major

  708.         avio_wb16(pb, 0); // minor

  709.         avio_wb16(pb, 0); // tertiary

  710.     } else {

  711.         avio_wb16(pb, LIBAVFORMAT_VERSION_MAJOR); // major

  712.         avio_wb16(pb, LIBAVFORMAT_VERSION_MINOR); // minor

  713.         avio_wb16(pb, LIBAVFORMAT_VERSION_MICRO); // tertiary

  714.     }

  715.     avio_wb16(pb, 0); // patch

  716.     avio_wb16(pb, 0); // release

  717. }

  718. 

  719. static void mxf_write_identification(AVFormatContext *s)

  720. {

  721.     MXFContext *mxf = s->priv_data;

  722.     AVIOContext *pb = s->pb;

  723.     const char *company = "FFmpeg";

  724.     const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";

  725.     const char *version;

  726.     int length;

  727. 

  728.     mxf_write_metadata_key(pb, 0x013000);

  729.     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);

  730. 

  731.     version = s->flags & AVFMT_FLAG_BITEXACT ?

  732.         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);

  733.     length = 100 +mxf_utf16_local_tag_length(company) +

  734.                   mxf_utf16_local_tag_length(product) +

  735.                   mxf_utf16_local_tag_length(version);

  736.     klv_encode_ber_length(pb, length);

  737. 

  738.     // write uid

  739.     mxf_write_local_tag(pb, 16, 0x3C0A);

  740.     mxf_write_uuid(pb, Identification, 0);

  741.     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);

  742. 

  743.     // write generation uid

  744.     mxf_write_local_tag(pb, 16, 0x3C09);

  745.     mxf_write_uuid(pb, Identification, 1);

  746.     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name

  747.     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name

  748. 

  749.     mxf_write_local_tag(pb, 10, 0x3C03); // Product Version

  750.     store_version(s);

  751. 

  752.     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String

  753. 

  754.     // write product uid

  755.     mxf_write_local_tag(pb, 16, 0x3C05);

  756.     mxf_write_uuid(pb, Identification, 2);

  757. 

  758.     // modification date

  759.     mxf_write_local_tag(pb, 8, 0x3C06);

  760.     avio_wb64(pb, mxf->timestamp);

  761. 

  762.     mxf_write_local_tag(pb, 10, 0x3C07); // Toolkit Version

  763.     store_version(s);

  764. }

  765. 

  766. static void mxf_write_content_storage(AVFormatContext *s, MXFPackage *packages, int package_count)

  767. {

  768.     AVIOContext *pb = s->pb;

  769.     int i;

  770. 

  771.     mxf_write_metadata_key(pb, 0x011800);

  772.     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);

  773.     klv_encode_ber_length(pb, 60 + (16 * package_count));

  774. 

  775.     // write uid

  776.     mxf_write_local_tag(pb, 16, 0x3C0A);

  777.     mxf_write_uuid(pb, ContentStorage, 0);

  778.     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);

  779. 

  780.     // write package reference

  781.     mxf_write_local_tag(pb, 16 * package_count + 8, 0x1901);

  782.     mxf_write_refs_count(pb, package_count);

  783.     for (i = 0; i < package_count; i++) {

  784.         mxf_write_uuid(pb, packages[i].type, packages[i].instance);

  785.     }

  786. 

  787.     // write essence container data

  788.     mxf_write_local_tag(pb, 8 + 16, 0x1902);

  789.     mxf_write_refs_count(pb, 1);

  790.     mxf_write_uuid(pb, EssenceContainerData, 0);

  791. }

  792. 

  793. static void mxf_write_track(AVFormatContext *s, AVStream *st, MXFPackage *package)

  794. {

  795.     MXFContext *mxf = s->priv_data;

  796.     AVIOContext *pb = s->pb;

  797.     MXFStreamContext *sc = st->priv_data;

  798. 

  799.     mxf_write_metadata_key(pb, 0x013b00);

  800.     PRINT_KEY(s, "track key", pb->buf_ptr - 16);

  801.     klv_encode_ber_length(pb, 80);

  802. 

  803.     // write track uid

  804.     mxf_write_local_tag(pb, 16, 0x3C0A);

  805.     mxf_write_uuid(pb, Track, mxf->track_instance_count);

  806.     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);

  807. 

  808.     // write track id

  809.     mxf_write_local_tag(pb, 4, 0x4801);

  810.     avio_wb32(pb, st->index+2);

  811. 

  812.     // write track number

  813.     mxf_write_local_tag(pb, 4, 0x4804);

  814.     if (package->type == MaterialPackage)

  815.         avio_wb32(pb, 0); // track number of material package is 0

  816.     else

  817.         avio_write(pb, sc->track_essence_element_key + 12, 4);

  818. 

  819.     // write edit rate

  820.     mxf_write_local_tag(pb, 8, 0x4B01);

  821. 

  822.     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer) {

  823.         avio_wb32(pb, mxf->tc.rate.num);

  824.         avio_wb32(pb, mxf->tc.rate.den);

  825.     } else {

  826.         avio_wb32(pb, mxf->time_base.den);

  827.         avio_wb32(pb, mxf->time_base.num);

  828.     }

  829. 

  830.     // write origin

  831.     mxf_write_local_tag(pb, 8, 0x4B02);

  832.     avio_wb64(pb, 0);

  833. 

  834.     // write sequence refs

  835.     mxf_write_local_tag(pb, 16, 0x4803);

  836.     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);

  837. }

  838. 

  839. static const uint8_t smpte_12m_timecode_track_data_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x01,0x01,0x00,0x00,0x00 };

  840. 

  841. static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)

  842. {

  843.     MXFContext *mxf = s->priv_data;

  844.     AVIOContext *pb = s->pb;

  845. 

  846.     // find data define uls

  847.     mxf_write_local_tag(pb, 16, 0x0201);

  848.     if (st == mxf->timecode_track)

  849.         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);

  850.     else {

  851.         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codecpar->codec_type);

  852.         avio_write(pb, data_def_ul->uid, 16);

  853.     }

  854. 

  855.     // write duration

  856.     mxf_write_local_tag(pb, 8, 0x0202);

  857. 

  858.     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {

  859.         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);

  860.     } else {

  861.         avio_wb64(pb, mxf->duration);

  862.     }

  863. }

  864. 

  865. static void mxf_write_sequence(AVFormatContext *s, AVStream *st, MXFPackage *package)

  866. {

  867.     MXFContext *mxf = s->priv_data;

  868.     AVIOContext *pb = s->pb;

  869.     enum MXFMetadataSetType component;

  870. 

  871.     mxf_write_metadata_key(pb, 0x010f00);

  872.     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);

  873.     klv_encode_ber_length(pb, 80);

  874. 

  875.     mxf_write_local_tag(pb, 16, 0x3C0A);

  876.     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);

  877. 

  878.     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);

  879.     mxf_write_common_fields(s, st);

  880. 

  881.     // write structural component

  882.     mxf_write_local_tag(pb, 16 + 8, 0x1001);

  883.     mxf_write_refs_count(pb, 1);

  884.     if (st == mxf->timecode_track)

  885.         component = TimecodeComponent;

  886.     else

  887.         component = SourceClip;

  888. 

  889.     mxf_write_uuid(pb, component, mxf->track_instance_count);

  890. }

  891. 

  892. static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, MXFPackage *package)

  893. {

  894.     MXFContext *mxf = s->priv_data;

  895.     AVIOContext *pb = s->pb;

  896. 

  897.     mxf_write_metadata_key(pb, 0x011400);

  898.     klv_encode_ber_length(pb, 75);

  899. 

  900.     // UID

  901.     mxf_write_local_tag(pb, 16, 0x3C0A);

  902.     mxf_write_uuid(pb, TimecodeComponent, mxf->track_instance_count);

  903. 

  904.     mxf_write_common_fields(s, st);

  905. 

  906.     // Start Time Code

  907.     mxf_write_local_tag(pb, 8, 0x1501);

  908.     avio_wb64(pb, mxf->tc.start);

  909. 

  910.     // Rounded Time Code Base

  911.     mxf_write_local_tag(pb, 2, 0x1502);

  912.     avio_wb16(pb, mxf->timecode_base);

  913. 

  914.     // Drop Frame

  915.     mxf_write_local_tag(pb, 1, 0x1503);

  916.     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));

  917. }

  918. 

  919. static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, MXFPackage *package)

  920. {

  921.     MXFContext *mxf = s->priv_data;

  922.     AVIOContext *pb = s->pb;

  923.     int i;

  924. 

  925.     mxf_write_metadata_key(pb, 0x011100);

  926.     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);

  927.     klv_encode_ber_length(pb, 108);

  928. 

  929.     // write uid

  930.     mxf_write_local_tag(pb, 16, 0x3C0A);

  931.     mxf_write_uuid(pb, SourceClip, mxf->track_instance_count);

  932. 

  933.     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);

  934.     mxf_write_common_fields(s, st);

  935. 

  936.     // write start_position

  937.     mxf_write_local_tag(pb, 8, 0x1201);

  938.     avio_wb64(pb, 0);

  939. 

  940.     // write source package uid, end of the reference

  941.     mxf_write_local_tag(pb, 32, 0x1101);

  942.     if (!package->ref) {

  943.         for (i = 0; i < 4; i++)

  944.             avio_wb64(pb, 0);

  945.     } else

  946.         mxf_write_umid(s, package->ref->instance);

  947. 

  948.     // write source track id

  949.     mxf_write_local_tag(pb, 4, 0x1102);

  950.     if (package->type == SourcePackage && !package->ref)

  951.         avio_wb32(pb, 0);

  952.     else

  953.         avio_wb32(pb, st->index+2);

  954. }

  955. 

  956. static void mxf_write_tape_descriptor(AVFormatContext *s)

  957. {

  958.     AVIOContext *pb = s->pb;

  959. 

  960.     mxf_write_metadata_key(pb, 0x012e00);

  961.     PRINT_KEY(s, "tape descriptor key", pb->buf_ptr - 16);

  962.     klv_encode_ber_length(pb, 20);

  963.     mxf_write_local_tag(pb, 16, 0x3C0A);

  964.     mxf_write_uuid(pb, TapeDescriptor, 0);

  965.     PRINT_KEY(s, "tape_desc uid", pb->buf_ptr - 16);

  966. }

  967. 

  968. 

  969. static void mxf_write_multi_descriptor(AVFormatContext *s)

  970. {

  971.     MXFContext *mxf = s->priv_data;

  972.     AVIOContext *pb = s->pb;

  973.     const uint8_t *ul;

  974.     int i;

  975. 

  976.     mxf_write_metadata_key(pb, 0x014400);

  977.     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);

  978.     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);

  979. 

  980.     mxf_write_local_tag(pb, 16, 0x3C0A);

  981.     mxf_write_uuid(pb, MultipleDescriptor, 0);

  982.     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);

  983. 

  984.     // write sample rate

  985.     mxf_write_local_tag(pb, 8, 0x3001);

  986.     avio_wb32(pb, mxf->time_base.den);

  987.     avio_wb32(pb, mxf->time_base.num);

  988. 

  989.     // write essence container ul

  990.     mxf_write_local_tag(pb, 16, 0x3004);

  991.     if (mxf->essence_container_count > 1)

  992.         ul = multiple_desc_ul;

  993.     else {

  994.         MXFStreamContext *sc = s->streams[0]->priv_data;

  995.         ul = *sc->container_ul;

  996.     }

  997.     avio_write(pb, ul, 16);

  998. 

  999.     // write sub descriptor refs

  1000.     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);

  1001.     mxf_write_refs_count(pb, s->nb_streams);

  1002.     for (i = 0; i < s->nb_streams; i++)

  1003.         mxf_write_uuid(pb, SubDescriptor, i);

  1004. }

  1005. 

  1006. static int64_t mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key)

  1007. {

  1008.     MXFContext *mxf = s->priv_data;

  1009.     MXFStreamContext *sc = st->priv_data;

  1010.     AVIOContext *pb = s->pb;

  1011.     int64_t pos;

  1012. 

  1013.     avio_write(pb, key, 16);

  1014.     klv_encode_ber4_length(pb, 0);

  1015.     pos = avio_tell(pb);

  1016. 

  1017.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1018.     mxf_write_uuid(pb, SubDescriptor, st->index);

  1019. 

  1020.     mxf_write_local_tag(pb, 4, 0x3006);

  1021.     avio_wb32(pb, st->index+2);

  1022. 

  1023.     mxf_write_local_tag(pb, 8, 0x3001);

  1024.     if (s->oformat == &ff_mxf_d10_muxer) {

  1025.         avio_wb32(pb, mxf->time_base.den);

  1026.         avio_wb32(pb, mxf->time_base.num);

  1027.     } else {

  1028.         if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE ||

  1029.             st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {

  1030.             avio_wb32(pb, st->codecpar->sample_rate);

  1031.             avio_wb32(pb, 1);

  1032.         } else {

  1033.             avio_wb32(pb, mxf->time_base.den);

  1034.             avio_wb32(pb, mxf->time_base.num);

  1035.         }

  1036.     }

  1037. 

  1038.     mxf_write_local_tag(pb, 16, 0x3004);

  1039.     avio_write(pb, *sc->container_ul, 16);

  1040. 

  1041.     return pos;

  1042. }

  1043. 

  1044. static const UID mxf_s436m_anc_descriptor_key = { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5c,0x00 };

  1045. static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };

  1046. static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };

  1047. static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };

  1048. static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };

  1049. static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };

  1050. 

  1051. static const UID mxf_avc_subdescriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x6E,0x00 };

  1052. 

  1053. static int get_trc(UID ul, enum AVColorTransferCharacteristic trc)

  1054. {

  1055.     switch (trc){

  1056.     case AVCOL_TRC_GAMMA28   :

  1057.     case AVCOL_TRC_GAMMA22   :

  1058.         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x01,0x00,0x00}), 16);

  1059.         return 0;

  1060.     case AVCOL_TRC_BT709     :

  1061.     case AVCOL_TRC_SMPTE170M :

  1062.         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x02,0x00,0x00}), 16);

  1063.         return 0;

  1064.     case AVCOL_TRC_SMPTE240M :

  1065.         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x03,0x00,0x00}), 16);

  1066.         return 0;

  1067.     case AVCOL_TRC_BT1361_ECG:

  1068.         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x06,0x04,0x01,0x01,0x01,0x01,0x05,0x00,0x00}), 16);

  1069.         return 0;

  1070.     case AVCOL_TRC_LINEAR    :

  1071.         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x06,0x04,0x01,0x01,0x01,0x01,0x06,0x00,0x00}), 16);

  1072.         return 0;

  1073.     case AVCOL_TRC_SMPTE428  :

  1074.         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x08,0x04,0x01,0x01,0x01,0x01,0x07,0x00,0x00}), 16);

  1075.         return 0;

  1076.     default:

  1077.         return -1;

  1078.     }

  1079. }

  1080. 

  1081. static int64_t mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key)

  1082. {

  1083.     MXFStreamContext *sc = st->priv_data;

  1084.     AVIOContext *pb = s->pb;

  1085.     int stored_width = 0;

  1086.     int stored_height = (st->codecpar->height+15)/16*16;

  1087.     int display_height;

  1088.     int f1, f2;

  1089.     UID transfer_ul = {0};

  1090.     int64_t pos = mxf_write_generic_desc(s, st, key);

  1091. 

  1092.     get_trc(transfer_ul, st->codecpar->color_trc);

  1093. 

  1094.     if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {

  1095.         if (st->codecpar->height == 1080)

  1096.             stored_width = 1920;

  1097.         else if (st->codecpar->height == 720)

  1098.             stored_width = 1280;

  1099.     }

  1100.     if (!stored_width)

  1101.         stored_width = (st->codecpar->width+15)/16*16;

  1102. 

  1103.     mxf_write_local_tag(pb, 4, 0x3203);

  1104.     avio_wb32(pb, stored_width);

  1105. 

  1106.     mxf_write_local_tag(pb, 4, 0x3202);

  1107.     avio_wb32(pb, stored_height>>sc->interlaced);

  1108. 

  1109.     if (s->oformat == &ff_mxf_d10_muxer) {

  1110.         //Stored F2 Offset

  1111.         mxf_write_local_tag(pb, 4, 0x3216);

  1112.         avio_wb32(pb, 0);

  1113. 

  1114.         //Image Start Offset

  1115.         mxf_write_local_tag(pb, 4, 0x3213);

  1116.         avio_wb32(pb, 0);

  1117. 

  1118.         //Image End Offset

  1119.         mxf_write_local_tag(pb, 4, 0x3214);

  1120.         avio_wb32(pb, 0);

  1121.     }

  1122. 

  1123.     //Sampled width

  1124.     mxf_write_local_tag(pb, 4, 0x3205);

  1125.     avio_wb32(pb, stored_width);

  1126. 

  1127.     //Samples height

  1128.     mxf_write_local_tag(pb, 4, 0x3204);

  1129.     avio_wb32(pb, st->codecpar->height>>sc->interlaced);

  1130. 

  1131.     //Sampled X Offset

  1132.     mxf_write_local_tag(pb, 4, 0x3206);

  1133.     avio_wb32(pb, 0);

  1134. 

  1135.     //Sampled Y Offset

  1136.     mxf_write_local_tag(pb, 4, 0x3207);

  1137.     avio_wb32(pb, 0);

  1138. 

  1139.     mxf_write_local_tag(pb, 4, 0x3209);

  1140.     avio_wb32(pb, stored_width);

  1141. 

  1142.     if (st->codecpar->height == 608) // PAL + VBI

  1143.         display_height = 576;

  1144.     else if (st->codecpar->height == 512)  // NTSC + VBI

  1145.         display_height = 486;

  1146.     else

  1147.         display_height = st->codecpar->height;

  1148. 

  1149.     mxf_write_local_tag(pb, 4, 0x3208);

  1150.     avio_wb32(pb, display_height>>sc->interlaced);

  1151. 

  1152.     // display X offset

  1153.     mxf_write_local_tag(pb, 4, 0x320A);

  1154.     avio_wb32(pb, 0);

  1155. 

  1156.     // display Y offset

  1157.     mxf_write_local_tag(pb, 4, 0x320B);

  1158.     avio_wb32(pb, (st->codecpar->height - display_height)>>sc->interlaced);

  1159. 

  1160.     if (sc->interlaced) {

  1161.         //Display F2 Offset

  1162.         mxf_write_local_tag(pb, 4, 0x3217);

  1163.         avio_wb32(pb, -((st->codecpar->height - display_height)&1));

  1164.     }

  1165. 

  1166.     // component depth

  1167.     mxf_write_local_tag(pb, 4, 0x3301);

  1168.     avio_wb32(pb, sc->component_depth);

  1169. 

  1170.     // horizontal subsampling

  1171.     mxf_write_local_tag(pb, 4, 0x3302);

  1172.     avio_wb32(pb, sc->h_chroma_sub_sample);

  1173. 

  1174.     // vertical subsampling

  1175.     mxf_write_local_tag(pb, 4, 0x3308);

  1176.     avio_wb32(pb, sc->v_chroma_sub_sample);

  1177. 

  1178.     // color siting

  1179.     mxf_write_local_tag(pb, 1, 0x3303);

  1180.     avio_w8(pb, sc->color_siting);

  1181. 

  1182.     // Padding Bits

  1183.     mxf_write_local_tag(pb, 2, 0x3307);

  1184.     avio_wb16(pb, 0);

  1185. 

  1186.     if (st->codecpar->color_range != AVCOL_RANGE_UNSPECIFIED) {

  1187.         int black = 0,

  1188.             white = (1<<sc->component_depth) - 1,

  1189.             color = (1<<sc->component_depth) - 1;

  1190.         if (st->codecpar->color_range == AVCOL_RANGE_MPEG) {

  1191.             black = 1   << (sc->component_depth - 4);

  1192.             white = 235 << (sc->component_depth - 8);

  1193.             color = (14 << (sc->component_depth - 4)) + 1;

  1194.         }

  1195.         mxf_write_local_tag(pb, 4, 0x3304);

  1196.         avio_wb32(pb, black);

  1197.         mxf_write_local_tag(pb, 4, 0x3305);

  1198.         avio_wb32(pb, white);

  1199.         mxf_write_local_tag(pb, 4, 0x3306);

  1200.         avio_wb32(pb, color);

  1201.     }

  1202. 

  1203.     if (sc->signal_standard) {

  1204.         mxf_write_local_tag(pb, 1, 0x3215);

  1205.         avio_w8(pb, sc->signal_standard);

  1206.     }

  1207. 

  1208.     // frame layout

  1209.     mxf_write_local_tag(pb, 1, 0x320C);

  1210.     avio_w8(pb, sc->interlaced);

  1211. 

  1212.     // video line map

  1213.     switch (st->codecpar->height) {

  1214.     case  576: f1 = 23; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;

  1215.     case  608: f1 =  7; f2 = 320; break;

  1216.     case  480: f1 = 20; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;

  1217.     case  512: f1 =  7; f2 = 270; break;

  1218.     case  720: f1 = 26; f2 =   0; break; // progressive

  1219.     case 1080: f1 = 21; f2 = 584; break;

  1220.     default:   f1 =  0; f2 =   0; break;

  1221.     }

  1222. 

  1223.     if (!sc->interlaced && f2) {

  1224.         f2  = 0;

  1225.         f1 *= 2;

  1226.     }

  1227. 

  1228. 

  1229.     mxf_write_local_tag(pb, 16, 0x320D);

  1230.     avio_wb32(pb, 2);

  1231.     avio_wb32(pb, 4);

  1232.     avio_wb32(pb, f1);

  1233.     avio_wb32(pb, f2);

  1234. 

  1235.     mxf_write_local_tag(pb, 8, 0x320E);

  1236.     avio_wb32(pb, sc->aspect_ratio.num);

  1237.     avio_wb32(pb, sc->aspect_ratio.den);

  1238. 

  1239.     //Transfer characteristic

  1240.     if (transfer_ul[0]) {

  1241.         mxf_write_local_tag(pb, 16, 0x3210);

  1242.         avio_write(pb, transfer_ul, 16);

  1243.     };

  1244. 

  1245.     mxf_write_local_tag(pb, 16, 0x3201);

  1246.     avio_write(pb, *sc->codec_ul, 16);

  1247. 

  1248.     if (sc->interlaced && sc->field_dominance) {

  1249.         mxf_write_local_tag(pb, 1, 0x3212);

  1250.         avio_w8(pb, sc->field_dominance);

  1251.     }

  1252. 

  1253.     if (st->codecpar->codec_id == AV_CODEC_ID_H264 && !sc->avc_intra) {

  1254.         // write avc sub descriptor ref

  1255.         mxf_write_local_tag(pb, 8 + 16, 0x8100);

  1256.         mxf_write_refs_count(pb, 1);

  1257.         mxf_write_uuid(pb, AVCSubDescriptor, 0);

  1258.     }

  1259. 

  1260.     return pos;

  1261. }

  1262. 

  1263. static void mxf_update_klv_size(AVIOContext *pb, int64_t pos)

  1264. {

  1265.     int64_t cur_pos = avio_tell(pb);

  1266.     int size = cur_pos - pos;

  1267.     avio_seek(pb, pos - 4, SEEK_SET);

  1268.     klv_encode_ber4_length(pb, size);

  1269.     avio_seek(pb, cur_pos, SEEK_SET);

  1270. }

  1271. 

  1272. static void mxf_write_avc_subdesc(AVFormatContext *s, AVStream *st)

  1273. {

  1274.     AVIOContext *pb = s->pb;

  1275.     int64_t pos;

  1276. 

  1277.     avio_write(pb, mxf_avc_subdescriptor_key, 16);

  1278.     klv_encode_ber4_length(pb, 0);

  1279.     pos = avio_tell(pb);

  1280. 

  1281.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1282.     mxf_write_uuid(pb, AVCSubDescriptor, 0);

  1283. 

  1284.     mxf_write_local_tag(pb, 1, 0x8200);

  1285.     avio_w8(pb, 0xFF); // AVC Decoding Delay, unknown

  1286. 

  1287.     mxf_write_local_tag(pb, 1, 0x8201);

  1288.     avio_w8(pb, st->codecpar->profile); // AVC Profile

  1289. 

  1290.     mxf_write_local_tag(pb, 1, 0x8202);

  1291.     avio_w8(pb, st->codecpar->level); // AVC Level

  1292. 

  1293.     mxf_update_klv_size(s->pb, pos);

  1294. }

  1295. 

  1296. static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)

  1297. {

  1298.     int64_t pos = mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key);

  1299.     mxf_update_klv_size(s->pb, pos);

  1300. 

  1301.     if (st->codecpar->codec_id == AV_CODEC_ID_H264) {

  1302.         mxf_write_avc_subdesc(s, st);

  1303.     }

  1304. }

  1305. 

  1306. static void mxf_write_h264_desc(AVFormatContext *s, AVStream *st)

  1307. {

  1308.     MXFStreamContext *sc = st->priv_data;

  1309.     if (sc->avc_intra) {

  1310.         mxf_write_mpegvideo_desc(s, st);

  1311.     } else {

  1312.         int64_t pos = mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key);

  1313.         mxf_update_klv_size(s->pb, pos);

  1314.         mxf_write_avc_subdesc(s, st);

  1315.     }

  1316. }

  1317. 

  1318. static void mxf_write_s436m_anc_desc(AVFormatContext *s, AVStream *st)

  1319. {

  1320.     int64_t pos = mxf_write_generic_desc(s, st, mxf_s436m_anc_descriptor_key);

  1321.     mxf_update_klv_size(s->pb, pos);

  1322. }

  1323. 

  1324. static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)

  1325. {

  1326.     AVIOContext *pb = s->pb;

  1327.     MXFStreamContext *sc = st->priv_data;

  1328.     int profile_and_level = (st->codecpar->profile<<4) | st->codecpar->level;

  1329.     int64_t pos = mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key);

  1330. 

  1331.     if (st->codecpar->codec_id != AV_CODEC_ID_H264) {

  1332.         // bit rate

  1333.         mxf_write_local_tag(pb, 4, 0x8000);

  1334.         avio_wb32(pb, sc->video_bit_rate);

  1335. 

  1336.         // profile and level

  1337.         mxf_write_local_tag(pb, 1, 0x8007);

  1338.         if (!st->codecpar->profile)

  1339.             profile_and_level |= 0x80; // escape bit

  1340.         avio_w8(pb, profile_and_level);

  1341. 

  1342.         // low delay

  1343.         mxf_write_local_tag(pb, 1, 0x8003);

  1344.         avio_w8(pb, sc->low_delay);

  1345. 

  1346.         // closed gop

  1347.         mxf_write_local_tag(pb, 1, 0x8004);

  1348.         avio_w8(pb, sc->seq_closed_gop);

  1349. 

  1350.         // max gop

  1351.         mxf_write_local_tag(pb, 2, 0x8006);

  1352.         avio_wb16(pb, sc->max_gop);

  1353. 

  1354.         // b picture count

  1355.         mxf_write_local_tag(pb, 2, 0x8008);

  1356.         avio_wb16(pb, sc->b_picture_count);

  1357.     }

  1358. 

  1359.     mxf_update_klv_size(pb, pos);

  1360. }

  1361. 

  1362. static int64_t mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key)

  1363. {

  1364.     AVIOContext *pb = s->pb;

  1365.     MXFContext *mxf = s->priv_data;

  1366.     int show_warnings = !mxf->footer_partition_offset;

  1367.     int64_t pos = mxf_write_generic_desc(s, st, key);

  1368. 

  1369.     if (s->oformat == &ff_mxf_opatom_muxer) {

  1370.         mxf_write_local_tag(pb, 8, 0x3002);

  1371.         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);

  1372.     }

  1373. 

  1374.     // audio locked

  1375.     mxf_write_local_tag(pb, 1, 0x3D02);

  1376.     avio_w8(pb, 1);

  1377. 

  1378.     // write audio sampling rate

  1379.     mxf_write_local_tag(pb, 8, 0x3D03);

  1380.     avio_wb32(pb, st->codecpar->sample_rate);

  1381.     avio_wb32(pb, 1);

  1382. 

  1383.     if (s->oformat == &ff_mxf_d10_muxer) {

  1384.         mxf_write_local_tag(pb, 1, 0x3D04);

  1385.         avio_w8(pb, 0);

  1386.     }

  1387. 

  1388.     mxf_write_local_tag(pb, 4, 0x3D07);

  1389.     if (mxf->channel_count == -1) {

  1390.         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codecpar->channels != 4) && (st->codecpar->channels != 8))

  1391.             av_log(s, AV_LOG_WARNING, "the number of audio channels shall be 4 or 8 : the output will not comply to MXF D-10 specs, use -d10_channelcount to fix this\n");

  1392.         avio_wb32(pb, st->codecpar->channels);

  1393.     } else if (s->oformat == &ff_mxf_d10_muxer) {

  1394.         if (show_warnings && (mxf->channel_count < st->codecpar->channels))

  1395.             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");

  1396.         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))

  1397.             av_log(s, AV_LOG_WARNING, "d10_channelcount shall be set to 4 or 8 : the output will not comply to MXF D-10 specs\n");

  1398.         avio_wb32(pb, mxf->channel_count);

  1399.     } else {

  1400.         avio_wb32(pb, st->codecpar->channels);

  1401.     }

  1402. 

  1403.     mxf_write_local_tag(pb, 4, 0x3D01);

  1404.     avio_wb32(pb, av_get_bits_per_sample(st->codecpar->codec_id));

  1405. 

  1406.     return pos;

  1407. }

  1408. 

  1409. static int64_t mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key)

  1410. {

  1411.     AVIOContext *pb = s->pb;

  1412.     int64_t pos = mxf_write_generic_sound_common(s, st, key);

  1413. 

  1414.     mxf_write_local_tag(pb, 2, 0x3D0A);

  1415.     avio_wb16(pb, st->codecpar->block_align);

  1416. 

  1417.     // avg bytes per sec

  1418.     mxf_write_local_tag(pb, 4, 0x3D09);

  1419.     avio_wb32(pb, st->codecpar->block_align*st->codecpar->sample_rate);

  1420. 

  1421.     return pos;

  1422. }

  1423. 

  1424. static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)

  1425. {

  1426.     int64_t pos = mxf_write_wav_common(s, st, mxf_wav_descriptor_key);

  1427.     mxf_update_klv_size(s->pb, pos);

  1428. }

  1429. 

  1430. static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)

  1431. {

  1432.     int64_t pos = mxf_write_wav_common(s, st, mxf_aes3_descriptor_key);

  1433.     mxf_update_klv_size(s->pb, pos);

  1434. }

  1435. 

  1436. static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)

  1437. {

  1438.     int64_t pos = mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key);

  1439.     mxf_update_klv_size(s->pb, pos);

  1440. }

  1441. 

  1442. static const uint8_t mxf_indirect_value_utf16le[] = { 0x4c,0x00,0x02,0x10,0x01,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 };

  1443. 

  1444. static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)

  1445. {

  1446.     MXFContext *mxf = s->priv_data;

  1447.     AVIOContext *pb = s->pb;

  1448.     int name_size = mxf_utf16_local_tag_length(name);

  1449.     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);

  1450. 

  1451.     if (!name_size || indirect_value_size == 13)

  1452.         return 1;

  1453. 

  1454.     mxf_write_metadata_key(pb, 0x013f00);

  1455.     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);

  1456. 

  1457.     // write instance UID

  1458.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1459.     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);

  1460. 

  1461.     // write name

  1462.     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name

  1463. 

  1464.     // write indirect value

  1465.     mxf_write_local_tag(pb, indirect_value_size, 0x5003);

  1466.     avio_write(pb, mxf_indirect_value_utf16le, 17);

  1467.     avio_put_str16le(pb, value);

  1468. 

  1469.     mxf->tagged_value_count++;

  1470.     return 0;

  1471. }

  1472. 

  1473. static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)

  1474. {

  1475.     MXFContext *mxf = s->priv_data;

  1476.     AVDictionaryEntry *t = NULL;

  1477.     int count = 0;

  1478. 

  1479.     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {

  1480.         if (mxf->tagged_value_count >= UINT16_MAX) {

  1481.             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");

  1482.             return count;

  1483.         }

  1484. 

  1485.         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)

  1486.             count++;

  1487.     }

  1488.     return count;

  1489. }

  1490. 

  1491. static void mxf_write_package(AVFormatContext *s, MXFPackage *package)

  1492. {

  1493.     MXFContext *mxf = s->priv_data;

  1494.     AVIOContext *pb = s->pb;

  1495.     int i, track_count = s->nb_streams+1;

  1496.     int name_size = mxf_utf16_local_tag_length(package->name);

  1497.     int user_comment_count = 0;

  1498. 

  1499.     if (package->type == MaterialPackage) {

  1500.         if (mxf->store_user_comments)

  1501.             user_comment_count = mxf_write_user_comments(s, s->metadata);

  1502.         mxf_write_metadata_key(pb, 0x013600);

  1503.         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);

  1504.         klv_encode_ber_length(pb, 92 + name_size + (16*track_count) + (16*user_comment_count) + 12LL*mxf->store_user_comments);

  1505.     } else {

  1506.         mxf_write_metadata_key(pb, 0x013700);

  1507.         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);

  1508.         klv_encode_ber_length(pb, 112 + name_size + (16*track_count) + 12LL*mxf->store_user_comments); // 20 bytes length for descriptor reference

  1509.     }

  1510. 

  1511.     // write uid

  1512.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1513.     mxf_write_uuid(pb, package->type, package->instance);

  1514.     av_log(s, AV_LOG_DEBUG, "package type:%d\n", package->type);

  1515.     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);

  1516. 

  1517.     // write package umid

  1518.     mxf_write_local_tag(pb, 32, 0x4401);

  1519.     mxf_write_umid(s, package->instance);

  1520.     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);

  1521. 

  1522.     // package name

  1523.     if (name_size)

  1524.         mxf_write_local_tag_utf16(pb, 0x4402, package->name);

  1525. 

  1526.     // package creation date

  1527.     mxf_write_local_tag(pb, 8, 0x4405);

  1528.     avio_wb64(pb, mxf->timestamp);

  1529. 

  1530.     // package modified date

  1531.     mxf_write_local_tag(pb, 8, 0x4404);

  1532.     avio_wb64(pb, mxf->timestamp);

  1533. 

  1534.     // write track refs

  1535.     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);

  1536.     mxf_write_refs_count(pb, track_count);

  1537.     // these are the uuids of the tracks the will be written in mxf_write_track

  1538.     for (i = 0; i < track_count; i++)

  1539.         mxf_write_uuid(pb, Track,  mxf->track_instance_count + i);

  1540. 

  1541.     // write user comment refs

  1542.     if (mxf->store_user_comments) {

  1543.         mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);

  1544.         mxf_write_refs_count(pb, user_comment_count);

  1545.         for (i = 0; i < user_comment_count; i++)

  1546.             mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);

  1547.     }

  1548. 

  1549.     // write multiple descriptor reference

  1550.     if (package->type == SourcePackage && package->instance == 1) {

  1551.         mxf_write_local_tag(pb, 16, 0x4701);

  1552.         if (s->nb_streams > 1) {

  1553.             mxf_write_uuid(pb, MultipleDescriptor, 0);

  1554.             mxf_write_multi_descriptor(s);

  1555.         } else

  1556.             mxf_write_uuid(pb, SubDescriptor, 0);

  1557.     } else if (package->type == SourcePackage && package->instance == 2) {

  1558.         mxf_write_local_tag(pb, 16, 0x4701);

  1559.         mxf_write_uuid(pb, TapeDescriptor, 0);

  1560.         mxf_write_tape_descriptor(s);

  1561.     }

  1562. 

  1563.     /*

  1564.      * for every 1 track in a package there is 1 sequence and 1 component.

  1565.      * all 3 of these elements share the same instance number for generating

  1566.      * there instance uuids. mxf->track_instance_count stores this value.

  1567.      * mxf->track_instance_count is incremented after a group of all 3 of

  1568.      * these elements are written.

  1569.      */

  1570. 

  1571.     // write timecode track

  1572.     mxf_write_track(s, mxf->timecode_track, package);

  1573.     mxf_write_sequence(s, mxf->timecode_track, package);

  1574.     mxf_write_timecode_component(s, mxf->timecode_track, package);

  1575.     mxf->track_instance_count++;

  1576. 

  1577.     for (i = 0; i < s->nb_streams; i++) {

  1578.         AVStream *st = s->streams[i];

  1579.         mxf_write_track(s, st, package);

  1580.         mxf_write_sequence(s, st, package);

  1581.         mxf_write_structural_component(s, st, package);

  1582.         mxf->track_instance_count++;

  1583. 

  1584.         if (package->type == SourcePackage && package->instance == 1) {

  1585.             MXFStreamContext *sc = st->priv_data;

  1586.             mxf_essence_container_uls[sc->index].write_desc(s, st);

  1587.         }

  1588.     }

  1589. }

  1590. 

  1591. static int mxf_write_essence_container_data(AVFormatContext *s)

  1592. {

  1593.     AVIOContext *pb = s->pb;

  1594. 

  1595.     mxf_write_metadata_key(pb, 0x012300);

  1596.     klv_encode_ber_length(pb, 72);

  1597. 

  1598.     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID

  1599.     mxf_write_uuid(pb, EssenceContainerData, 0);

  1600. 

  1601.     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID

  1602.     mxf_write_umid(s, 1);

  1603. 

  1604.     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID

  1605.     avio_wb32(pb, 1);

  1606. 

  1607.     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID

  1608.     avio_wb32(pb, 2);

  1609. 

  1610.     return 0;

  1611. }

  1612. 

  1613. static int mxf_write_header_metadata_sets(AVFormatContext *s)

  1614. {

  1615.     MXFContext *mxf = s->priv_data;

  1616.     AVDictionaryEntry *entry = NULL;

  1617.     AVStream *st = NULL;

  1618.     int i;

  1619.     MXFPackage packages[3] = {{0}};

  1620.     int package_count = 2;

  1621.     packages[0].type = MaterialPackage;

  1622.     packages[1].type = SourcePackage;

  1623.     packages[1].instance = 1;

  1624.     packages[0].ref = &packages[1];

  1625. 

  1626. 

  1627.     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))

  1628.        packages[0].name = entry->value;

  1629. 

  1630.     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {

  1631.         packages[1].name = entry->value;

  1632.     } else {

  1633.         /* check if any of the streams contain a file_package_name */

  1634.         for (i = 0; i < s->nb_streams; i++) {

  1635.             st = s->streams[i];

  1636.             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {

  1637.                 packages[1].name = entry->value;

  1638.                 break;

  1639.             }

  1640.         }

  1641.     }

  1642. 

  1643.     entry = av_dict_get(s->metadata, "reel_name", NULL, 0);

  1644.     if (entry) {

  1645.         packages[2].name = entry->value;

  1646.         packages[2].type = SourcePackage;

  1647.         packages[2].instance = 2;

  1648.         packages[1].ref = &packages[2];

  1649.         package_count = 3;

  1650.     }

  1651. 

  1652.     mxf_write_preface(s);

  1653.     mxf_write_identification(s);

  1654.     mxf_write_content_storage(s, packages, package_count);

  1655.     mxf->track_instance_count = 0;

  1656.     for (i = 0; i < package_count; i++)

  1657.         mxf_write_package(s, &packages[i]);

  1658.     mxf_write_essence_container_data(s);

  1659.     return 0;

  1660. }

  1661. 

  1662. static unsigned klv_fill_size(uint64_t size)

  1663. {

  1664.     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));

  1665.     if (pad < 20) // smallest fill item possible

  1666.         return pad + KAG_SIZE;

  1667.     else

  1668.         return pad & (KAG_SIZE-1);

  1669. }

  1670. 

  1671. static void mxf_write_index_table_segment(AVFormatContext *s)

  1672. {

  1673.     MXFContext *mxf = s->priv_data;

  1674.     AVIOContext *pb = s->pb;

  1675.     int i, j, temporal_reordering = 0;

  1676.     int key_index = mxf->last_key_index;

  1677.     int prev_non_b_picture = 0;

  1678.     int audio_frame_size = 0;

  1679.     int64_t pos;

  1680. 

  1681.     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);

  1682. 

  1683.     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)

  1684.         return;

  1685. 

  1686.     avio_write(pb, index_table_segment_key, 16);

  1687. 

  1688.     klv_encode_ber4_length(pb, 0);

  1689.     pos = avio_tell(pb);

  1690. 

  1691.     // instance id

  1692.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1693.     mxf_write_uuid(pb, IndexTableSegment, 0);

  1694. 

  1695.     // index edit rate

  1696.     mxf_write_local_tag(pb, 8, 0x3F0B);

  1697.     avio_wb32(pb, mxf->time_base.den);

  1698.     avio_wb32(pb, mxf->time_base.num);

  1699. 

  1700.     // index start position

  1701.     mxf_write_local_tag(pb, 8, 0x3F0C);

  1702.     avio_wb64(pb, mxf->last_indexed_edit_unit);

  1703. 

  1704.     // index duration

  1705.     mxf_write_local_tag(pb, 8, 0x3F0D);

  1706.     if (mxf->edit_unit_byte_count)

  1707.         avio_wb64(pb, 0); // index table covers whole container

  1708.     else

  1709.         avio_wb64(pb, mxf->edit_units_count);

  1710. 

  1711.     // edit unit byte count

  1712.     mxf_write_local_tag(pb, 4, 0x3F05);

  1713.     avio_wb32(pb, mxf->edit_unit_byte_count);

  1714. 

  1715.     // index sid

  1716.     mxf_write_local_tag(pb, 4, 0x3F06);

  1717.     avio_wb32(pb, 2);

  1718. 

  1719.     // body sid

  1720.     mxf_write_local_tag(pb, 4, 0x3F07);

  1721.     avio_wb32(pb, 1);

  1722. 

  1723.     // real slice count - 1

  1724.     mxf_write_local_tag(pb, 1, 0x3F08);

  1725.     avio_w8(pb, !mxf->edit_unit_byte_count); // only one slice for CBR

  1726. 

  1727.     // delta entry array

  1728.     mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);

  1729.     avio_wb32(pb, s->nb_streams+1); // num of entries

  1730.     avio_wb32(pb, 6);               // size of one entry

  1731.     // write system item delta entry

  1732.     avio_w8(pb, 0);

  1733.     avio_w8(pb, 0); // slice entry

  1734.     avio_wb32(pb, 0); // element delta

  1735.     // write each stream delta entry

  1736.     for (i = 0; i < s->nb_streams; i++) {

  1737.         AVStream *st = s->streams[i];

  1738.         MXFStreamContext *sc = st->priv_data;

  1739.         avio_w8(pb, sc->temporal_reordering);

  1740.         if (sc->temporal_reordering)

  1741.             temporal_reordering = 1;

  1742.         if (mxf->edit_unit_byte_count) {

  1743.             avio_w8(pb, 0); // slice number

  1744.             avio_wb32(pb, sc->slice_offset);

  1745.         } else if (i == 0) { // video track

  1746.             avio_w8(pb, 0); // slice number

  1747.             avio_wb32(pb, KAG_SIZE); // system item size including klv fill

  1748.         } else { // audio or data track

  1749.             if (!audio_frame_size) {

  1750.                 audio_frame_size = sc->frame_size;

  1751.                 audio_frame_size += klv_fill_size(audio_frame_size);

  1752.             }

  1753.             avio_w8(pb, 1);

  1754.             avio_wb32(pb, (i-1)*audio_frame_size); // element delta

  1755.         }

  1756.     }

  1757. 

  1758.     if (!mxf->edit_unit_byte_count) {

  1759.         MXFStreamContext *sc = s->streams[0]->priv_data;

  1760.         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*15, 0x3F0A);

  1761.         avio_wb32(pb, mxf->edit_units_count);  // num of entries

  1762.         avio_wb32(pb, 15);  // size of one entry

  1763. 

  1764.         for (i = 0; i < mxf->edit_units_count; i++) {

  1765.             int temporal_offset = 0;

  1766. 

  1767.             if (!(mxf->index_entries[i].flags & 0x33)) { // I-frame

  1768.                 sc->max_gop = FFMAX(sc->max_gop, i - mxf->last_key_index);

  1769.                 mxf->last_key_index = key_index;

  1770.                 key_index = i;

  1771.             }

  1772. 

  1773.             if (temporal_reordering) {

  1774.                 int pic_num_in_gop = i - key_index;

  1775.                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {

  1776.                     for (j = key_index; j < mxf->edit_units_count; j++) {

  1777.                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)

  1778.                             break;

  1779.                     }

  1780.                     if (j == mxf->edit_units_count)

  1781.                         av_log(s, AV_LOG_WARNING, "missing frames\n");

  1782.                     temporal_offset = j - key_index - pic_num_in_gop;

  1783.                 }

  1784.             }

  1785.             avio_w8(pb, temporal_offset);

  1786. 

  1787.             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction

  1788.                 sc->b_picture_count = FFMAX(sc->b_picture_count, i - prev_non_b_picture);

  1789.                 avio_w8(pb, mxf->last_key_index - i);

  1790.             } else {

  1791.                 avio_w8(pb, key_index - i); // key frame offset

  1792.                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward

  1793.                     mxf->last_key_index = key_index;

  1794.                 prev_non_b_picture = i;

  1795.             }

  1796. 

  1797.             if (!(mxf->index_entries[i].flags & 0x33) && // I-frame

  1798.                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)

  1799.                 mxf->index_entries[i].flags |= 0x80; // random access

  1800.             avio_w8(pb, mxf->index_entries[i].flags);

  1801.             // stream offset

  1802.             avio_wb64(pb, mxf->index_entries[i].offset);

  1803.             if (s->nb_streams > 1)

  1804.                 avio_wb32(pb, mxf->index_entries[i].slice_offset);

  1805.             else

  1806.                 avio_wb32(pb, 0);

  1807.         }

  1808. 

  1809.         mxf->last_key_index = key_index - mxf->edit_units_count;

  1810.         mxf->last_indexed_edit_unit += mxf->edit_units_count;

  1811.         mxf->edit_units_count = 0;

  1812.     }

  1813. 

  1814.     mxf_update_klv_size(pb, pos);

  1815. }

  1816. 

  1817. static void mxf_write_klv_fill(AVFormatContext *s)

  1818. {

  1819.     unsigned pad = klv_fill_size(avio_tell(s->pb));

  1820.     if (pad) {

  1821.         avio_write(s->pb, klv_fill_key, 16);

  1822.         pad -= 16 + 4;

  1823.         klv_encode_ber4_length(s->pb, pad);

  1824.         ffio_fill(s->pb, 0, pad);

  1825.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  1826.     }

  1827. }

  1828. 

  1829. static int mxf_write_partition(AVFormatContext *s, int bodysid,

  1830.                                 int indexsid,

  1831.                                 const uint8_t *key, int write_metadata)

  1832. {

  1833.     MXFContext *mxf = s->priv_data;

  1834.     AVIOContext *pb = s->pb;

  1835.     int64_t header_byte_count_offset;

  1836.     unsigned index_byte_count = 0;

  1837.     uint64_t partition_offset = avio_tell(pb);

  1838.     int err;

  1839. 

  1840.     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)

  1841.         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +

  1842.             12+mxf->edit_units_count*15;

  1843.     else if (mxf->edit_unit_byte_count && indexsid)

  1844.         index_byte_count = 80;

  1845. 

  1846.     if (index_byte_count) {

  1847.         index_byte_count += 16 + 4; // add encoded ber4 length

  1848.         index_byte_count += klv_fill_size(index_byte_count);

  1849.     }

  1850. 

  1851.     if (key && !memcmp(key, body_partition_key, 16)) {

  1852.         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,

  1853.                                      sizeof(*mxf->body_partition_offset))) < 0) {

  1854.             mxf->body_partitions_count = 0;

  1855.             return err;

  1856.         }

  1857.         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;

  1858.     }

  1859. 

  1860.     // write klv

  1861.     if (key)

  1862.         avio_write(pb, key, 16);

  1863.     else

  1864.         avio_write(pb, body_partition_key, 16);

  1865. 

  1866.     klv_encode_ber4_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));

  1867. 

  1868.     // write partition value

  1869.     avio_wb16(pb, 1); // majorVersion

  1870.     avio_wb16(pb, 3); // minorVersion

  1871.     avio_wb32(pb, KAG_SIZE); // KAGSize

  1872. 

  1873.     avio_wb64(pb, partition_offset); // ThisPartition

  1874. 

  1875.     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)

  1876.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition

  1877.     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)

  1878.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition

  1879.     else

  1880.         avio_wb64(pb, 0);

  1881. 

  1882.     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition

  1883. 

  1884.     // set offset

  1885.     header_byte_count_offset = avio_tell(pb);

  1886.     avio_wb64(pb, 0); // headerByteCount, update later

  1887. 

  1888.     // indexTable

  1889.     avio_wb64(pb, index_byte_count); // indexByteCount

  1890.     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID

  1891. 

  1892.     // BodyOffset

  1893.     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)

  1894.         avio_wb64(pb, mxf->body_offset);

  1895.     else

  1896.         avio_wb64(pb, 0);

  1897. 

  1898.     avio_wb32(pb, bodysid); // bodySID

  1899. 

  1900.     // operational pattern

  1901.     if (s->oformat == &ff_mxf_opatom_muxer)

  1902.         avio_write(pb, opatom_ul, 16);

  1903.     else

  1904.         avio_write(pb, op1a_ul, 16);

  1905. 

  1906.     // essence container

  1907.     mxf_write_essence_container_refs(s);

  1908. 

  1909.     if (write_metadata) {

  1910.         // mark the start of the headermetadata and calculate metadata size

  1911.         int64_t pos, start;

  1912.         unsigned header_byte_count;

  1913. 

  1914.         mxf_write_klv_fill(s);

  1915.         start = avio_tell(s->pb);

  1916.         mxf_write_primer_pack(s);

  1917.         mxf_write_klv_fill(s);

  1918.         mxf_write_header_metadata_sets(s);

  1919.         pos = avio_tell(s->pb);

  1920.         header_byte_count = pos - start + klv_fill_size(pos);

  1921. 

  1922.         // update header_byte_count

  1923.         avio_seek(pb, header_byte_count_offset, SEEK_SET);

  1924.         avio_wb64(pb, header_byte_count);

  1925.         avio_seek(pb, pos, SEEK_SET);

  1926.     }

  1927. 

  1928.     if(key)

  1929.         avio_write_marker(pb, AV_NOPTS_VALUE, AVIO_DATA_MARKER_FLUSH_POINT);

  1930. 

  1931.     return 0;

  1932. }

  1933. 

  1934. static const struct {

  1935.     int profile;

  1936.     UID codec_ul;

  1937. } mxf_prores_codec_uls[] = {

  1938.     { FF_PROFILE_PRORES_PROXY,    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x01,0x00 } },

  1939.     { FF_PROFILE_PRORES_LT,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x02,0x00 } },

  1940.     { FF_PROFILE_PRORES_STANDARD, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x03,0x00 } },

  1941.     { FF_PROFILE_PRORES_HQ,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x04,0x00 } },

  1942.     { FF_PROFILE_PRORES_4444,     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x05,0x00 } },

  1943.     { FF_PROFILE_PRORES_XQ,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x06,0x00 } },

  1944. };

  1945. 

  1946. static int mxf_parse_prores_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1947. {

  1948.     MXFContext *mxf = s->priv_data;

  1949.     MXFStreamContext *sc = st->priv_data;

  1950.     int i, profile;

  1951. 

  1952.     if (mxf->header_written)

  1953.         return 1;

  1954. 

  1955.     sc->codec_ul = NULL;

  1956.     profile = st->codecpar->profile;

  1957.     for (i = 0; i < FF_ARRAY_ELEMS(mxf_prores_codec_uls); i++) {

  1958.         if (profile == mxf_prores_codec_uls[i].profile) {

  1959.             sc->codec_ul = &mxf_prores_codec_uls[i].codec_ul;

  1960.             break;

  1961.         }

  1962.     }

  1963.     if (!sc->codec_ul)

  1964.         return 0;

  1965. 

  1966.     sc->frame_size = pkt->size;

  1967. 

  1968.     return 1;

  1969. }

  1970. 

  1971. static const struct {

  1972.     int cid;

  1973.     UID codec_ul;

  1974. } mxf_dnxhd_codec_uls[] = {

  1975.     { 1235, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 } }, // 1080p 10bit HIGH

  1976.     { 1237, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 } }, // 1080p 8bit MED

  1977.     { 1238, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 } }, // 1080p 8bit HIGH

  1978.     { 1241, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 } }, // 1080i 10bit HIGH

  1979.     { 1242, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 } }, // 1080i 8bit MED

  1980.     { 1243, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 } }, // 1080i 8bit HIGH

  1981.     { 1244, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x0a,0x00,0x00 } }, // 1080i 8bit TR

  1982.     { 1250, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 } }, // 720p 10bit

  1983.     { 1251, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 } }, // 720p 8bit HIGH

  1984.     { 1252, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 } }, // 720p 8bit MED

  1985.     { 1253, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 } }, // 720p 8bit LOW

  1986.     { 1256, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x16,0x00,0x00 } }, // 1080p 10bit 444

  1987.     { 1258, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x18,0x00,0x00 } }, // 720p 8bit TR

  1988.     { 1259, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x19,0x00,0x00 } }, // 1080p 8bit TR

  1989.     { 1260, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x1a,0x00,0x00 } }, // 1080i 8bit TR MBAFF

  1990.     { 1270, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x24,0x00,0x00 } }, // DNXHR 444

  1991.     { 1271, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x25,0x00,0x00 } }, // DNXHR HQX

  1992.     { 1272, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x26,0x00,0x00 } }, // DNXHR HQ

  1993.     { 1273, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x27,0x00,0x00 } }, // DNXHR SQ

  1994.     { 1274, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x28,0x00,0x00 } }, // DNXHR LB

  1995. };

  1996. 

  1997. static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1998. {

  1999.     MXFContext *mxf = s->priv_data;

  2000.     MXFStreamContext *sc = st->priv_data;

  2001.     int i, cid, frame_size = 0;

  2002. 

  2003.     if (mxf->header_written)

  2004.         return 1;

  2005. 

  2006.     if (pkt->size < 43)

  2007.         return 0;

  2008. 

  2009.     sc->codec_ul = NULL;

  2010.     cid = AV_RB32(pkt->data + 0x28);

  2011.     for (i = 0; i < FF_ARRAY_ELEMS(mxf_dnxhd_codec_uls); i++) {

  2012.         if (cid == mxf_dnxhd_codec_uls[i].cid) {

  2013.             sc->codec_ul = &mxf_dnxhd_codec_uls[i].codec_ul;

  2014.             break;

  2015.         }

  2016.     }

  2017.     if (!sc->codec_ul)

  2018.         return 0;

  2019. 

  2020.     sc->component_depth = 0;

  2021.     switch (pkt->data[0x21] >> 5) {

  2022.     case 1: sc->component_depth = 8; break;

  2023.     case 2: sc->component_depth = 10; break;

  2024.     case 3: sc->component_depth = 12; break;

  2025.     }

  2026.     if (!sc->component_depth)

  2027.         return 0;

  2028. 

  2029.     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) == DNXHD_VARIABLE) {

  2030.         frame_size = avpriv_dnxhd_get_hr_frame_size(cid, st->codecpar->width, st->codecpar->height);

  2031.     }

  2032.     if (frame_size < 0)

  2033.         return 0;

  2034. 

  2035.     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)

  2036.         return 0;

  2037. 

  2038.     if (cid >= 1270) { // RI raster

  2039.         av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,

  2040.                   st->codecpar->width, st->codecpar->height,

  2041.                   INT_MAX);

  2042.     } else {

  2043.         sc->aspect_ratio = (AVRational){ 16, 9 };

  2044.     }

  2045. 

  2046.     sc->frame_size = pkt->size;

  2047. 

  2048.     return 1;

  2049. }

  2050. 

  2051. static const struct {

  2052.     const UID container_ul;

  2053.     const UID codec_ul;

  2054. } mxf_dv_uls[] = {

  2055.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x01,0x01 }, // IEC DV25 525/60

  2056.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x01,0x00 } },

  2057.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x02,0x01 }, // IEC DV25 626/50

  2058.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x02,0x00 } },

  2059.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 }, // DV25 525/60

  2060.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 }, },

  2061.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, // DV25 625/50

  2062.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 }, },

  2063.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 }, // DV50 525/60

  2064.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 }, },

  2065.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 }, // DV50 625/50

  2066.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 }, },

  2067.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 }, // DV100 1080/60

  2068.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 }, },

  2069.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 }, // DV100 1080/50

  2070.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 }, },

  2071.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 }, // DV100 720/60

  2072.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 }, },

  2073.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 }, // DV100 720/50

  2074.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 }, },

  2075. };

  2076. 

  2077. static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  2078. {

  2079.     MXFContext *mxf = s->priv_data;

  2080.     MXFStreamContext *sc = st->priv_data;

  2081.     uint8_t *vs_pack, *vsc_pack;

  2082.     int apt, ul_index, stype, pal;

  2083. 

  2084.     if (mxf->header_written)

  2085.         return 1;

  2086. 

  2087.     // Check for minimal frame size

  2088.     if (pkt->size < 120000)

  2089.         return -1;

  2090. 

  2091.     apt      = pkt->data[4] & 0x7;

  2092.     vs_pack  = pkt->data + 80*5 + 48;

  2093.     vsc_pack = pkt->data + 80*5 + 53;

  2094.     stype    = vs_pack[3] & 0x1f;

  2095.     pal      = (vs_pack[3] >> 5) & 0x1;

  2096. 

  2097.     if ((vsc_pack[2] & 0x07) == 0x02) {

  2098.         sc->aspect_ratio = (AVRational){ 16, 9 };

  2099.     } else {

  2100.         sc->aspect_ratio = (AVRational){ 4, 3 };

  2101.     }

  2102. 

  2103.     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;

  2104.     // TODO: fix dv encoder to set proper FF/FS value in VSC pack

  2105.     // and set field dominance accordingly

  2106.     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);

  2107. 

  2108.     switch (stype) {

  2109.     case 0x18: // DV100 720p

  2110.         ul_index = 8+pal;

  2111.         if (sc->interlaced) {

  2112.             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");

  2113.             sc->interlaced = 0;

  2114.         }

  2115.         break;

  2116.     case 0x14: // DV100 1080i

  2117.         ul_index = 6+pal;

  2118.         break;

  2119.     case 0x04: // DV50

  2120.         ul_index = 4+pal;

  2121.         break;

  2122.     default: // DV25

  2123.         if (!apt) { // IEC

  2124.             ul_index = 0+pal;

  2125.         } else {

  2126.             ul_index = 2+pal;

  2127.         }

  2128.     }

  2129. 

  2130.     sc->container_ul = &mxf_dv_uls[ul_index].container_ul;

  2131.     sc->codec_ul = &mxf_dv_uls[ul_index].codec_ul;

  2132. 

  2133.     sc->frame_size = pkt->size;

  2134. 

  2135.     return 1;

  2136. }

  2137. 

  2138. static const struct {

  2139.     UID uid;

  2140.     int frame_size;

  2141.     int profile;

  2142.     uint8_t interlaced;

  2143.     int intra_only; // 1 or 0 when there are separate UIDs for Long GOP and Intra, -1 when Intra/LGOP detection can be ignored

  2144. } mxf_h264_codec_uls[] = {

  2145.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x11,0x01 },      0,  66, 0, -1 }, // AVC Baseline

  2146.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x20,0x01 },      0,  77, 0, -1 }, // AVC Main

  2147.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x30,0x01 },      0,  88, 0, -1 }, // AVC Extended

  2148.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x40,0x01 },      0, 100, 0, -1 }, // AVC High

  2149.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x50,0x01 },      0, 110, 0,  0 }, // AVC High 10

  2150.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x60,0x01 },      0, 122, 0,  0 }, // AVC High 422

  2151.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x70,0x01 },      0, 244, 0,  0 }, // AVC High 444

  2152.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0,  1 }, // AVC High 10 Intra

  2153.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960, 110, 1,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/59.94i

  2154.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088, 110, 1,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/50i

  2155.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/29.97p

  2156.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/25p

  2157.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 720/59.94p

  2158.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 720/50p

  2159.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0,  1 }, // AVC High 422 Intra

  2160.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576, 122, 1,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/59.94i

  2161.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832, 122, 1,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/50i

  2162.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/29.97p

  2163.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/25p

  2164.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 720/59.94p

  2165.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 720/50p

  2166.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x01,0x32,0x40,0x01 },      0, 244, 0,  1 }, // AVC High 444 Intra

  2167.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x01,0x32,0x50,0x01 },      0,  44, 0, -1 }, // AVC CAVLC 444

  2168. };

  2169. 

  2170. static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,

  2171.                                 AVPacket *pkt, MXFIndexEntry *e)

  2172. {

  2173.     MXFContext *mxf = s->priv_data;

  2174.     MXFStreamContext *sc = st->priv_data;

  2175.     H264SequenceParameterSet *sps = NULL;

  2176.     GetBitContext gb;

  2177.     const uint8_t *buf = pkt->data;

  2178.     const uint8_t *buf_end = pkt->data + pkt->size;

  2179.     const uint8_t *nal_end;

  2180.     uint32_t state = -1;

  2181.     int extra_size = 512; // support AVC Intra files without SPS/PPS header

  2182.     int i, frame_size, slice_type, intra_only = 0;

  2183. 

  2184.     for (;;) {

  2185.         buf = avpriv_find_start_code(buf, buf_end, &state);

  2186.         if (buf >= buf_end)

  2187.             break;

  2188. 

  2189.         switch (state & 0x1f) {

  2190.         case H264_NAL_SPS:

  2191.             e->flags |= 0x40;

  2192. 

  2193.             if (mxf->header_written)

  2194.                 break;

  2195. 

  2196.             nal_end = ff_avc_find_startcode(buf, buf_end);

  2197.             sps = ff_avc_decode_sps(buf, nal_end - buf);

  2198.             if (!sps) {

  2199.                 av_log(s, AV_LOG_ERROR, "error parsing sps\n");

  2200.                 return 0;

  2201.             }

  2202. 

  2203.             sc->aspect_ratio.num = st->codecpar->width * sps->sar.num;

  2204.             sc->aspect_ratio.den = st->codecpar->height * sps->sar.den;

  2205.             av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,

  2206.                       sc->aspect_ratio.num, sc->aspect_ratio.den, 1024*1024);

  2207.             intra_only = (sps->constraint_set_flags >> 3) & 1;

  2208.             sc->interlaced = !sps->frame_mbs_only_flag;

  2209.             sc->component_depth = sps->bit_depth_luma;

  2210. 

  2211.             buf = nal_end;

  2212.             break;

  2213.         case H264_NAL_PPS:

  2214.             if (e->flags & 0x40) { // sequence header present

  2215.                 e->flags |= 0x80; // random access

  2216.                 extra_size = 0;

  2217.             }

  2218.             break;

  2219.         case H264_NAL_IDR_SLICE:

  2220.             e->flags |= 0x04; // IDR Picture

  2221.             buf = buf_end;

  2222.             break;

  2223.         case H264_NAL_SLICE:

  2224.             init_get_bits8(&gb, buf, buf_end - buf);

  2225.             get_ue_golomb_long(&gb); // skip first_mb_in_slice

  2226.             slice_type = get_ue_golomb_31(&gb);

  2227.             switch (slice_type % 5) {

  2228.             case 0:

  2229.                 e->flags |= 0x20; // P Picture

  2230.                 e->flags |= 0x06; // P Picture

  2231.                 break;

  2232.             case 1:

  2233.                 e->flags |= 0x30; // B Picture

  2234.                 e->flags |= 0x03; // non-referenced B Picture

  2235.                 break;

  2236.             }

  2237.             buf = buf_end;

  2238.             break;

  2239.         default:

  2240.             break;

  2241.         }

  2242.     }

  2243. 

  2244.     if (mxf->header_written)

  2245.         return 1;

  2246. 

  2247.     if (!sps)

  2248.         sc->interlaced = st->codecpar->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;

  2249.     sc->codec_ul = NULL;

  2250.     frame_size = pkt->size + extra_size;

  2251. 

  2252.     for (i = 0; i < FF_ARRAY_ELEMS(mxf_h264_codec_uls); i++) {

  2253.         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {

  2254.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  2255.             sc->component_depth = 10; // AVC Intra is always 10 Bit

  2256.             sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD

  2257.             st->codecpar->profile = mxf_h264_codec_uls[i].profile;

  2258.             sc->avc_intra = 1;

  2259.             mxf->cbr_index = 1;

  2260.             sc->frame_size = pkt->size;

  2261.             if (sc->interlaced)

  2262.                 sc->field_dominance = 1; // top field first is mandatory for AVC Intra

  2263.             break;

  2264.         } else if (sps && mxf_h264_codec_uls[i].frame_size == 0 &&

  2265.                    mxf_h264_codec_uls[i].profile == sps->profile_idc &&

  2266.                    (mxf_h264_codec_uls[i].intra_only < 0 ||

  2267.                     mxf_h264_codec_uls[i].intra_only == intra_only)) {

  2268.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  2269.             st->codecpar->profile = sps->profile_idc;

  2270.             st->codecpar->level = sps->level_idc;

  2271.             // continue to check for avc intra

  2272.         }

  2273.     }

  2274. 

  2275.     av_free(sps);

  2276. 

  2277.     if (!sc->codec_ul) {

  2278.         av_log(s, AV_LOG_ERROR, "h264 profile not supported\n");

  2279.         return 0;

  2280.     }

  2281. 

  2282.     return 1;

  2283. }

  2284. 

  2285. static const UID mxf_mpeg2_codec_uls[] = {

  2286.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame

  2287.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP

  2288.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame

  2289.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP

  2290.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame

  2291.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP

  2292.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame

  2293.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP

  2294.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame

  2295.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP

  2296. };

  2297. 

  2298. static const UID *mxf_get_mpeg2_codec_ul(AVCodecParameters *par)

  2299. {

  2300.     int long_gop = 1;

  2301. 

  2302.     if (par->profile == 4) { // Main

  2303.         if (par->level == 8) // Main

  2304.             return &mxf_mpeg2_codec_uls[0+long_gop];

  2305.         else if (par->level == 4) // High

  2306.             return &mxf_mpeg2_codec_uls[4+long_gop];

  2307.         else if (par->level == 6) // High 14

  2308.             return &mxf_mpeg2_codec_uls[8+long_gop];

  2309.     } else if (par->profile == 0) { // 422

  2310.         if (par->level == 5) // Main

  2311.             return &mxf_mpeg2_codec_uls[2+long_gop];

  2312.         else if (par->level == 2) // High

  2313.             return &mxf_mpeg2_codec_uls[6+long_gop];

  2314.     }

  2315.     return NULL;

  2316. }

  2317. 

  2318. static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,

  2319.                                  AVPacket *pkt, MXFIndexEntry *e)

  2320. {

  2321.     MXFStreamContext *sc = st->priv_data;

  2322.     uint32_t c = -1;

  2323.     int i;

  2324. 

  2325.     for(i = 0; i < pkt->size - 4; i++) {

  2326.         c = (c<<8) + pkt->data[i];

  2327.         if (c == 0x1b5) {

  2328.             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext

  2329.                 st->codecpar->profile = pkt->data[i+1] & 0x07;

  2330.                 st->codecpar->level   = pkt->data[i+2] >> 4;

  2331.                 sc->low_delay = pkt->data[i+6] >> 7;

  2332.             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext

  2333.                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame

  2334.                 if (sc->interlaced)

  2335.                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first

  2336.                 break;

  2337.             }

  2338.         } else if (c == 0x1b8) { // gop

  2339.             if (pkt->data[i+4]>>6 & 0x01) { // closed

  2340.                 if (sc->seq_closed_gop == -1)

  2341.                     sc->seq_closed_gop = 1;

  2342.                 sc->closed_gop = 1;

  2343.                 if (e->flags & 0x40) // sequence header present

  2344.                     e->flags |= 0x80; // random access

  2345.             } else {

  2346.                 sc->seq_closed_gop = 0;

  2347.                 sc->closed_gop = 0;

  2348.             }

  2349.         } else if (c == 0x1b3) { // seq

  2350.             e->flags |= 0x40;

  2351.             switch ((pkt->data[i+4]>>4) & 0xf) {

  2352.             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;

  2353.             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;

  2354.             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;

  2355.             default:

  2356.                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,

  2357.                           st->codecpar->width, st->codecpar->height, 1024*1024);

  2358.             }

  2359.         } else if (c == 0x100) { // pic

  2360.             int pict_type = (pkt->data[i+2]>>3) & 0x07;

  2361.             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);

  2362.             if (pict_type == 2) { // P-frame

  2363.                 e->flags |= 0x22;

  2364.                 sc->closed_gop = 0; // reset closed GOP, don't matter anymore

  2365.             } else if (pict_type == 3) { // B-frame

  2366.                 if (sc->closed_gop)

  2367.                     e->flags |= 0x13; // only backward prediction

  2368.                 else

  2369.                     e->flags |= 0x33;

  2370.                 sc->temporal_reordering = -1;

  2371.             } else if (!pict_type) {

  2372.                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");

  2373.                 return 0;

  2374.             }

  2375.         }

  2376.     }

  2377.     if (s->oformat != &ff_mxf_d10_muxer)

  2378.         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codecpar);

  2379.     return !!sc->codec_ul;

  2380. }

  2381. 

  2382. static uint64_t mxf_parse_timestamp(int64_t timestamp64)

  2383. {

  2384.     time_t timestamp = timestamp64 / 1000000;

  2385.     struct tm tmbuf;

  2386.     struct tm *time = gmtime_r(&timestamp, &tmbuf);

  2387.     if (!time)

  2388.         return 0;

  2389.     return (uint64_t)(time->tm_year+1900) << 48 |

  2390.            (uint64_t)(time->tm_mon+1)     << 40 |

  2391.            (uint64_t) time->tm_mday       << 32 |

  2392.                       time->tm_hour       << 24 |

  2393.                       time->tm_min        << 16 |

  2394.                       time->tm_sec        << 8  |

  2395.                       (timestamp64 % 1000000) / 4000;

  2396. }

  2397. 

  2398. static void mxf_gen_umid(AVFormatContext *s)

  2399. {

  2400.     MXFContext *mxf = s->priv_data;

  2401.     uint32_t seed = av_get_random_seed();

  2402.     uint64_t umid = seed + 0x5294713400000000LL;

  2403. 

  2404.     AV_WB64(mxf->umid  , umid);

  2405.     AV_WB64(mxf->umid+8, umid>>8);

  2406. 

  2407.     mxf->instance_number = seed & 0xFFFFFF;

  2408. }

  2409. 

  2410. static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)

  2411. {

  2412.     MXFContext *mxf = s->priv_data;

  2413.     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);

  2414.     if (!tcr)

  2415.         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);

  2416. 

  2417.     if (tcr)

  2418.         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);

  2419.     else

  2420.         return av_timecode_init(&mxf->tc, rate, 0, 0, s);

  2421. }

  2422. 

  2423. static int mxf_write_header(AVFormatContext *s)

  2424. {

  2425.     MXFContext *mxf = s->priv_data;

  2426.     int i, ret;

  2427.     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};

  2428.     const MXFSamplesPerFrame *spf = NULL;

  2429.     int64_t timestamp = 0;

  2430. 

  2431.     if (!s->nb_streams)

  2432.         return -1;

  2433. 

  2434.     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1) {

  2435.         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");

  2436.         return -1;

  2437.     }

  2438. 

  2439.     if (!av_dict_get(s->metadata, "comment_", NULL, AV_DICT_IGNORE_SUFFIX))

  2440.         mxf->store_user_comments = 0;

  2441. 

  2442.     for (i = 0; i < s->nb_streams; i++) {

  2443.         AVStream *st = s->streams[i];

  2444.         MXFStreamContext *sc = av_mallocz(sizeof(*sc));

  2445.         if (!sc)

  2446.             return AVERROR(ENOMEM);

  2447.         st->priv_data = sc;

  2448.         sc->index = -1;

  2449. 

  2450.         if (((i == 0) ^ (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {

  2451.             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");

  2452.             return -1;

  2453.         }

  2454. 

  2455.         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {

  2456.             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codecpar->format);

  2457.             // TODO: should be avg_frame_rate

  2458.             AVRational rate, tbc = st->time_base;

  2459.             // Default component depth to 8

  2460.             sc->component_depth = 8;

  2461.             sc->h_chroma_sub_sample = 2;

  2462.             sc->v_chroma_sub_sample = 2;

  2463.             sc->color_siting = 0xFF;

  2464. 

  2465.             if (st->codecpar->sample_aspect_ratio.num && st->codecpar->sample_aspect_ratio.den) {

  2466.                 sc->aspect_ratio = av_mul_q(st->codecpar->sample_aspect_ratio,

  2467.                                             av_make_q(st->codecpar->width, st->codecpar->height));

  2468.             }

  2469. 

  2470.             if (pix_desc) {

  2471.                 sc->component_depth     = pix_desc->comp[0].depth;

  2472.                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;

  2473.                 sc->v_chroma_sub_sample = 1 << pix_desc->log2_chroma_h;

  2474.             }

  2475.             switch (ff_choose_chroma_location(s, st)) {

  2476.             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;

  2477.             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;

  2478.             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;

  2479.             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;

  2480.             }

  2481. 

  2482.             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;

  2483.             spf = ff_mxf_get_samples_per_frame(s, tbc);

  2484.             if (!spf) {

  2485.                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",

  2486.                        tbc.den, tbc.num);

  2487.                 return AVERROR(EINVAL);

  2488.             }

  2489.             mxf->content_package_rate = ff_mxf_get_content_package_rate(tbc);

  2490.             mxf->time_base = spf->time_base;

  2491.             rate = av_inv_q(mxf->time_base);

  2492.             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);

  2493.             if((ret = mxf_init_timecode(s, st, rate)) < 0)

  2494.                 return ret;

  2495. 

  2496.             if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {

  2497.                 sc->seq_closed_gop = -1; // unknown yet

  2498.             }

  2499. 

  2500.             sc->video_bit_rate = st->codecpar->bit_rate;

  2501. 

  2502.             if (s->oformat == &ff_mxf_d10_muxer ||

  2503.                 st->codecpar->codec_id == AV_CODEC_ID_DNXHD ||

  2504.                 st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO)

  2505.                 mxf->cbr_index = 1;

  2506. 

  2507.             if (s->oformat == &ff_mxf_d10_muxer) {

  2508.                 int ntsc = mxf->time_base.den != 25;

  2509.                 int ul_index;

  2510. 

  2511.                 if (st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO) {

  2512.                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support MPEG-2 Video\n");

  2513.                     return AVERROR(EINVAL);

  2514.                 }

  2515.                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {

  2516.                     ul_index = 0;

  2517.                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && ntsc) {

  2518.                     ul_index = 1;

  2519.                 } else if (sc->video_bit_rate == 40000000) {

  2520.                     ul_index = 2+ntsc;

  2521.                 } else if (sc->video_bit_rate == 30000000) {

  2522.                     ul_index = 4+ntsc;

  2523.                 } else {

  2524.                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");

  2525.                     return -1;

  2526.                 }

  2527. 

  2528.                 sc->codec_ul = &mxf_d10_codec_uls[ul_index];

  2529.                 sc->container_ul = &mxf_d10_container_uls[ul_index];

  2530.                 sc->index = INDEX_D10_VIDEO;

  2531.                 sc->signal_standard = 1;

  2532.                 sc->color_siting = 0;

  2533.                 sc->frame_size = (int64_t)sc->video_bit_rate *

  2534.                     mxf->time_base.num / (8*mxf->time_base.den);

  2535.             }

  2536.             if (mxf->signal_standard >= 0)

  2537.                 sc->signal_standard = mxf->signal_standard;

  2538.         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {

  2539.             if (st->codecpar->sample_rate != 48000) {

  2540.                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");

  2541.                 return -1;

  2542.             }

  2543.             avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);

  2544.             if (s->oformat == &ff_mxf_d10_muxer) {

  2545.                 if (st->index != 1) {

  2546.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");

  2547.                     return -1;

  2548.                 }

  2549.                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&

  2550.                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {

  2551.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");

  2552.                 }

  2553.                 sc->index = INDEX_D10_AUDIO;

  2554.                 sc->container_ul = ((MXFStreamContext*)s->streams[0]->priv_data)->container_ul;

  2555.                 sc->frame_size = 4 + 8 * spf[0].samples_per_frame[0] * 4;

  2556.             } else if (s->oformat == &ff_mxf_opatom_muxer) {

  2557.                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);

  2558. 

  2559.                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&

  2560.                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {

  2561.                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");

  2562.                     return AVERROR_PATCHWELCOME;

  2563.                 }

  2564.                 if (st->codecpar->channels != 1) {

  2565.                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");

  2566.                     return AVERROR(EINVAL);

  2567.                 }

  2568. 

  2569.                 spf = ff_mxf_get_samples_per_frame(s, tbc);

  2570.                 if (!spf) {

  2571.                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);

  2572.                     return AVERROR(EINVAL);

  2573.                 }

  2574. 

  2575.                 mxf->time_base = st->time_base;

  2576.                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)

  2577.                     return ret;

  2578. 

  2579.                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;

  2580.                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;

  2581.                 sc->index = INDEX_WAV;

  2582.             } else {

  2583.                 mxf->slice_count = 1;

  2584.                 sc->frame_size = (st->codecpar->channels * spf[0].samples_per_frame[0] *

  2585.                                   av_get_bits_per_sample(st->codecpar->codec_id)) / 8;

  2586.             }

  2587.         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {

  2588.             AVDictionaryEntry *e = av_dict_get(st->metadata, "data_type", NULL, 0);

  2589.             if (e && !strcmp(e->value, "vbi_vanc_smpte_436M")) {

  2590.                 sc->index = INDEX_S436M;

  2591.             } else {

  2592.                 av_log(s, AV_LOG_ERROR, "track %d: unsupported data type\n", i);

  2593.                 return -1;

  2594.             }

  2595.             if (st->index != s->nb_streams - 1) {

  2596.                 av_log(s, AV_LOG_ERROR, "data track must be placed last\n");

  2597.                 return -1;

  2598.             }

  2599.         }

  2600. 

  2601.         if (sc->index == -1) {

  2602.             sc->index = mxf_get_essence_container_ul_index(st->codecpar->codec_id);

  2603.             if (sc->index == -1) {

  2604.                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "

  2605.                        "codec not currently supported in container\n", i);

  2606.                 return -1;

  2607.             }

  2608.         }

  2609. 

  2610.         if (!sc->codec_ul)

  2611.             sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  2612.         if (!sc->container_ul)

  2613.             sc->container_ul = &mxf_essence_container_uls[sc->index].container_ul;

  2614. 

  2615.         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);

  2616.         sc->track_essence_element_key[15] = present[sc->index];

  2617.         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);

  2618. 

  2619.         if (!present[sc->index])

  2620.             mxf->essence_container_count++;

  2621.         present[sc->index]++;

  2622.     }

  2623. 

  2624.     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {

  2625.         mxf->essence_container_count = 1;

  2626.     }

  2627. 

  2628.     if (!(s->flags & AVFMT_FLAG_BITEXACT))

  2629.         mxf_gen_umid(s);

  2630. 

  2631.     for (i = 0; i < s->nb_streams; i++) {

  2632.         MXFStreamContext *sc = s->streams[i]->priv_data;

  2633.         // update element count

  2634.         sc->track_essence_element_key[13] = present[sc->index];

  2635.         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[INDEX_DV].element_ul, 13)) // DV

  2636.             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);

  2637.         else

  2638.             sc->order = AV_RB32(sc->track_essence_element_key+12);

  2639.     }

  2640. 

  2641.     if (ff_parse_creation_time_metadata(s, &timestamp, 0) > 0)

  2642.         mxf->timestamp = mxf_parse_timestamp(timestamp);

  2643.     mxf->duration = -1;

  2644. 

  2645.     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));

  2646.     if (!mxf->timecode_track)

  2647.         return AVERROR(ENOMEM);

  2648.     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));

  2649.     if (!mxf->timecode_track->priv_data)

  2650.         return AVERROR(ENOMEM);

  2651.     mxf->timecode_track->index = -1;

  2652. 

  2653.     if (ff_audio_interleave_init(s, 0, av_inv_q(mxf->tc.rate)) < 0)

  2654.         return -1;

  2655. 

  2656.     return 0;

  2657. }

  2658. 

  2659. static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };

  2660. static const uint8_t system_metadata_package_set_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x43,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x02,0x01 };

  2661. 

  2662. static void mxf_write_system_item(AVFormatContext *s)

  2663. {

  2664.     MXFContext *mxf = s->priv_data;

  2665.     AVIOContext *pb = s->pb;

  2666.     unsigned frame;

  2667.     uint32_t time_code;

  2668.     int i, system_item_bitmap = 0x58; // UL, user date/time stamp, picture present

  2669. 

  2670.     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  2671. 

  2672.     // write system metadata pack

  2673.     avio_write(pb, system_metadata_pack_key, 16);

  2674.     klv_encode_ber4_length(pb, 57);

  2675. 

  2676.     for (i = 0; i < s->nb_streams; i++) {

  2677.         if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)

  2678.             system_item_bitmap |= 0x4;

  2679.         else if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_DATA)

  2680.             system_item_bitmap |= 0x2;

  2681.     }

  2682.     avio_w8(pb, system_item_bitmap);

  2683.     avio_w8(pb, mxf->content_package_rate); // content package rate

  2684.     avio_w8(pb, 0x00); // content package type

  2685.     avio_wb16(pb, 0x00); // channel handle

  2686.     avio_wb16(pb, frame & 0xFFFF); // continuity count, supposed to overflow

  2687.     if (mxf->essence_container_count > 1)

  2688.         avio_write(pb, multiple_desc_ul, 16);

  2689.     else {

  2690.         MXFStreamContext *sc = s->streams[0]->priv_data;

  2691.         avio_write(pb, *sc->container_ul, 16);

  2692.     }

  2693.     avio_w8(pb, 0);

  2694.     avio_wb64(pb, 0);

  2695.     avio_wb64(pb, 0); // creation date/time stamp

  2696. 

  2697.     avio_w8(pb, 0x81); // SMPTE 12M time code

  2698.     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);

  2699.     avio_wb32(pb, time_code);

  2700.     avio_wb32(pb, 0); // binary group data

  2701.     avio_wb64(pb, 0);

  2702. 

  2703.     // write system metadata package set

  2704.     avio_write(pb, system_metadata_package_set_key, 16);

  2705.     klv_encode_ber4_length(pb, 35);

  2706.     avio_w8(pb, 0x83); // UMID

  2707.     avio_wb16(pb, 0x20);

  2708.     mxf_write_umid(s, 1);

  2709. }

  2710. 

  2711. static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  2712. {

  2713.     MXFContext *mxf = s->priv_data;

  2714.     AVIOContext *pb = s->pb;

  2715.     int frame_size = pkt->size / st->codecpar->block_align;

  2716.     uint8_t *samples = pkt->data;

  2717.     uint8_t *end = pkt->data + pkt->size;

  2718.     int i;

  2719. 

  2720.     klv_encode_ber4_length(pb, 4 + frame_size*4*8);

  2721. 

  2722.     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));

  2723.     avio_wl16(pb, frame_size);

  2724.     avio_w8(pb, (1<<st->codecpar->channels)-1);

  2725. 

  2726.     while (samples < end) {

  2727.         for (i = 0; i < st->codecpar->channels; i++) {

  2728.             uint32_t sample;

  2729.             if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {

  2730.                 sample = AV_RL24(samples)<< 4;

  2731.                 samples += 3;

  2732.             } else {

  2733.                 sample = AV_RL16(samples)<<12;

  2734.                 samples += 2;

  2735.             }

  2736.             avio_wl32(pb, sample | i);

  2737.         }

  2738.         for (; i < 8; i++)

  2739.             avio_wl32(pb, i);

  2740.     }

  2741. }

  2742. 

  2743. static int mxf_write_opatom_body_partition(AVFormatContext *s)

  2744. {

  2745.     MXFContext *mxf = s->priv_data;

  2746.     AVIOContext *pb = s->pb;

  2747.     AVStream *st = s->streams[0];

  2748.     MXFStreamContext *sc = st->priv_data;

  2749.     const uint8_t *key = NULL;

  2750. 

  2751.     int err;

  2752. 

  2753.     if (!mxf->header_written)

  2754.         key = body_partition_key;

  2755. 

  2756.     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)

  2757.         return err;

  2758.     mxf_write_klv_fill(s);

  2759.     avio_write(pb, sc->track_essence_element_key, 16);

  2760.     klv_encode_ber9_length(pb, mxf->body_offset);

  2761.     return 0;

  2762. }

  2763. 

  2764. static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)

  2765. {

  2766.     MXFContext *mxf = s->priv_data;

  2767.     AVIOContext *pb = s->pb;

  2768. 

  2769.     int err;

  2770. 

  2771.     if (!mxf->header_written) {

  2772.         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  2773.             return err;

  2774.         mxf_write_klv_fill(s);

  2775. 

  2776.         if ((err = mxf_write_opatom_body_partition(s)) < 0)

  2777.             return err;

  2778.         mxf->header_written = 1;

  2779.     }

  2780. 

  2781.     if (!mxf->edit_unit_byte_count) {

  2782.         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2783.         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;

  2784.         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;

  2785.     }

  2786.     mxf->edit_units_count++;

  2787.     avio_write(pb, pkt->data, pkt->size);

  2788.     mxf->body_offset += pkt->size;

  2789. 

  2790.     return 0;

  2791. }

  2792. 

  2793. static void mxf_compute_edit_unit_byte_count(AVFormatContext *s)

  2794. {

  2795.     MXFContext *mxf = s->priv_data;

  2796.     int i;

  2797. 

  2798.     if (s->oformat == &ff_mxf_opatom_muxer) {

  2799.         MXFStreamContext *sc = s->streams[0]->priv_data;

  2800.         mxf->edit_unit_byte_count = sc->frame_size;

  2801.         return;

  2802.     }

  2803. 

  2804.     mxf->edit_unit_byte_count = KAG_SIZE; // system element

  2805.     for (i = 0; i < s->nb_streams; i++) {

  2806.         AVStream *st = s->streams[i];

  2807.         MXFStreamContext *sc = st->priv_data;

  2808.         sc->slice_offset = mxf->edit_unit_byte_count;

  2809.         mxf->edit_unit_byte_count += 16 + 4 + sc->frame_size;

  2810.         mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  2811.     }

  2812. }

  2813. 

  2814. static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)

  2815. {

  2816.     MXFContext *mxf = s->priv_data;

  2817.     AVIOContext *pb = s->pb;

  2818.     AVStream *st = s->streams[pkt->stream_index];

  2819.     MXFStreamContext *sc = st->priv_data;

  2820.     MXFIndexEntry ie = {0};

  2821.     int err;

  2822. 

  2823.     if (!mxf->cbr_index && !mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {

  2824.         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count

  2825.                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {

  2826.             mxf->edit_units_count = 0;

  2827.             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");

  2828.             return err;

  2829.         }

  2830.     }

  2831. 

  2832.     if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {

  2833.         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {

  2834.             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");

  2835.             return -1;

  2836.         }

  2837.     } else if (st->codecpar->codec_id == AV_CODEC_ID_DNXHD) {

  2838.         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {

  2839.             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");

  2840.             return -1;

  2841.         }

  2842.     } else if (st->codecpar->codec_id == AV_CODEC_ID_PRORES) {

  2843.         if (!mxf_parse_prores_frame(s, st, pkt)) {

  2844.             av_log(s, AV_LOG_ERROR, "could not get prores profile\n");

  2845.             return -1;

  2846.         }

  2847.     } else if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {

  2848.         if (!mxf_parse_dv_frame(s, st, pkt)) {

  2849.             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");

  2850.             return -1;

  2851.         }

  2852.     } else if (st->codecpar->codec_id == AV_CODEC_ID_H264) {

  2853.         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {

  2854.             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");

  2855.             return -1;

  2856.         }

  2857.     }

  2858. 

  2859.     if (mxf->cbr_index) {

  2860.         if (pkt->size != sc->frame_size && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {

  2861.             av_log(s, AV_LOG_ERROR, "track %d: frame size does not match index unit size, %d != %d\n",

  2862.                    st->index, pkt->size, sc->frame_size);

  2863.             return -1;

  2864.         }

  2865.         if (!mxf->header_written)

  2866.             mxf_compute_edit_unit_byte_count(s);

  2867.     }

  2868. 

  2869.     if (s->oformat == &ff_mxf_opatom_muxer)

  2870.         return mxf_write_opatom_packet(s, pkt, &ie);

  2871. 

  2872.     if (!mxf->header_written) {

  2873.         if (mxf->edit_unit_byte_count) {

  2874.             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)

  2875.                 return err;

  2876.             mxf_write_klv_fill(s);

  2877.             mxf_write_index_table_segment(s);

  2878.         } else {

  2879.             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  2880.                 return err;

  2881.         }

  2882.         mxf->header_written = 1;

  2883.     }

  2884. 

  2885.     if (st->index == 0) {

  2886.         if (!mxf->edit_unit_byte_count &&

  2887.             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&

  2888.             !(ie.flags & 0x33)) { // I-frame, GOP start

  2889.             mxf_write_klv_fill(s);

  2890.             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)

  2891.                 return err;

  2892.             mxf_write_klv_fill(s);

  2893.             mxf_write_index_table_segment(s);

  2894.         }

  2895. 

  2896.         mxf_write_klv_fill(s);

  2897.         mxf_write_system_item(s);

  2898. 

  2899.         if (!mxf->edit_unit_byte_count) {

  2900.             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2901.             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;

  2902.             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;

  2903.             mxf->body_offset += KAG_SIZE; // size of system element

  2904.         }

  2905.         mxf->edit_units_count++;

  2906.     } else if (!mxf->edit_unit_byte_count && st->index == 1) {

  2907.         if (!mxf->edit_units_count) {

  2908.             av_log(s, AV_LOG_ERROR, "No packets in first stream\n");

  2909.             return AVERROR_PATCHWELCOME;

  2910.         }

  2911.         mxf->index_entries[mxf->edit_units_count-1].slice_offset =

  2912.             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;

  2913.     }

  2914. 

  2915.     mxf_write_klv_fill(s);

  2916.     avio_write(pb, sc->track_essence_element_key, 16); // write key

  2917.     if (s->oformat == &ff_mxf_d10_muxer &&

  2918.         st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {

  2919.         mxf_write_d10_audio_packet(s, st, pkt);

  2920.     } else {

  2921.         klv_encode_ber4_length(pb, pkt->size); // write length

  2922.         avio_write(pb, pkt->data, pkt->size);

  2923.         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);

  2924.     }

  2925. 

  2926.     return 0;

  2927. }

  2928. 

  2929. static void mxf_write_random_index_pack(AVFormatContext *s)

  2930. {

  2931.     MXFContext *mxf = s->priv_data;

  2932.     AVIOContext *pb = s->pb;

  2933.     uint64_t pos = avio_tell(pb);

  2934.     int i;

  2935. 

  2936.     avio_write(pb, random_index_pack_key, 16);

  2937.     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);

  2938. 

  2939.     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)

  2940.         avio_wb32(pb, 1); // BodySID of header partition

  2941.     else

  2942.         avio_wb32(pb, 0);

  2943.     avio_wb64(pb, 0); // offset of header partition

  2944. 

  2945.     for (i = 0; i < mxf->body_partitions_count; i++) {

  2946.         avio_wb32(pb, 1); // BodySID

  2947.         avio_wb64(pb, mxf->body_partition_offset[i]);

  2948.     }

  2949. 

  2950.     avio_wb32(pb, 0); // BodySID of footer partition

  2951.     avio_wb64(pb, mxf->footer_partition_offset);

  2952. 

  2953.     avio_wb32(pb, avio_tell(pb) - pos + 4);

  2954. }

  2955. 

  2956. static int mxf_write_footer(AVFormatContext *s)

  2957. {

  2958.     MXFContext *mxf = s->priv_data;

  2959.     AVIOContext *pb = s->pb;

  2960.     int i, err;

  2961. 

  2962.     if (!mxf->header_written ||

  2963.         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {

  2964.         /* reason could be invalid options/not supported codec/out of memory */

  2965.         return AVERROR_UNKNOWN;

  2966.     }

  2967. 

  2968.     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  2969. 

  2970.     mxf_write_klv_fill(s);

  2971.     mxf->footer_partition_offset = avio_tell(pb);

  2972.     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index

  2973.         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)

  2974.             return err;

  2975.     } else {

  2976.         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)

  2977.             return err;

  2978.         mxf_write_klv_fill(s);

  2979.         mxf_write_index_table_segment(s);

  2980.     }

  2981. 

  2982.     mxf_write_klv_fill(s);

  2983.     mxf_write_random_index_pack(s);

  2984. 

  2985.     if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {

  2986.         if (s->oformat == &ff_mxf_opatom_muxer) {

  2987.             /* rewrite body partition to update lengths */

  2988.             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);

  2989.             if ((err = mxf_write_opatom_body_partition(s)) < 0)

  2990.                 return err;

  2991.         }

  2992. 

  2993.         avio_seek(pb, 0, SEEK_SET);

  2994.         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {

  2995.             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)

  2996.                 return err;

  2997.             mxf_write_klv_fill(s);

  2998.             mxf_write_index_table_segment(s);

  2999.         } else {

  3000.             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)

  3001.                 return err;

  3002.         }

  3003.         // update footer partition offset

  3004.         for (i = 0; i < mxf->body_partitions_count; i++) {

  3005.             avio_seek(pb, mxf->body_partition_offset[i]+44, SEEK_SET);

  3006.             avio_wb64(pb, mxf->footer_partition_offset);

  3007.         }

  3008.     }

  3009. 

  3010.     return 0;

  3011. }

  3012. 

  3013. static void mxf_deinit(AVFormatContext *s)

  3014. {

  3015.     MXFContext *mxf = s->priv_data;

  3016. 

  3017.     ff_audio_interleave_close(s);

  3018. 

  3019.     av_freep(&mxf->index_entries);

  3020.     av_freep(&mxf->body_partition_offset);

  3021.     if (mxf->timecode_track) {

  3022.         av_freep(&mxf->timecode_track->priv_data);

  3023.         av_freep(&mxf->timecode_track);

  3024.     }

  3025. }

  3026. 

  3027. static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  3028. {

  3029.     int i, stream_count = 0;

  3030. 

  3031.     for (i = 0; i < s->nb_streams; i++)

  3032.         stream_count += !!s->streams[i]->last_in_packet_buffer;

  3033. 

  3034.     if (stream_count && (s->nb_streams == stream_count || flush)) {

  3035.         AVPacketList *pktl = s->internal->packet_buffer;

  3036.         if (s->nb_streams != stream_count) {

  3037.             AVPacketList *last = NULL;

  3038.             // find last packet in edit unit

  3039.             while (pktl) {

  3040.                 if (!stream_count || pktl->pkt.stream_index == 0)

  3041.                     break;

  3042.                 // update last packet in packet buffer

  3043.                 if (s->streams[pktl->pkt.stream_index]->last_in_packet_buffer != pktl)

  3044.                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer = pktl;

  3045.                 last = pktl;

  3046.                 pktl = pktl->next;

  3047.                 stream_count--;

  3048.             }

  3049.             // purge packet queue

  3050.             while (pktl) {

  3051.                 AVPacketList *next = pktl->next;

  3052.                 av_packet_unref(&pktl->pkt);

  3053.                 av_freep(&pktl);

  3054.                 pktl = next;

  3055.             }

  3056.             if (last)

  3057.                 last->next = NULL;

  3058.             else {

  3059.                 s->internal->packet_buffer = NULL;

  3060.                 s->internal->packet_buffer_end= NULL;

  3061.                 goto out;

  3062.             }

  3063.             pktl = s->internal->packet_buffer;

  3064.         }

  3065. 

  3066.         *out = pktl->pkt;

  3067.         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);

  3068.         s->internal->packet_buffer = pktl->next;

  3069.         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  3070.             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  3071.         if(!s->internal->packet_buffer)

  3072.             s->internal->packet_buffer_end= NULL;

  3073.         av_freep(&pktl);

  3074.         return 1;

  3075.     } else {

  3076.     out:

  3077.         av_init_packet(out);

  3078.         return 0;

  3079.     }

  3080. }

  3081. 

  3082. static int mxf_compare_timestamps(AVFormatContext *s, const AVPacket *next,

  3083.                                                       const AVPacket *pkt)

  3084. {

  3085.     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;

  3086.     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;

  3087. 

  3088.     return next->dts > pkt->dts ||

  3089.         (next->dts == pkt->dts && sc->order < sc2->order);

  3090. }

  3091. 

  3092. static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  3093. {

  3094.     return ff_audio_rechunk_interleave(s, out, pkt, flush,

  3095.                                mxf_interleave_get_packet, mxf_compare_timestamps);

  3096. }

  3097. 

  3098. #define MXF_COMMON_OPTIONS \

  3099.     { "signal_standard", "Force/set Signal Standard",\

  3100.       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  3101.     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\

  3102.       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  3103.     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\

  3104.       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  3105.     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\

  3106.       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  3107.     { "smpte274m", "SMPTE 274M (1125 line)",\

  3108.       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  3109.     { "smpte296m", "SMPTE 296M (750 line progressive)",\

  3110.       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  3111.     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\

  3112.       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  3113.     { "smpte428", "SMPTE 428-1 DCDM",\

  3114.       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},

  3115. 

  3116. 

  3117. 

  3118. static const AVOption mxf_options[] = {

  3119.     MXF_COMMON_OPTIONS

  3120.     { "store_user_comments", "",

  3121.       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},

  3122.     { NULL },

  3123. };

  3124. 

  3125. static const AVClass mxf_muxer_class = {

  3126.     .class_name     = "MXF muxer",

  3127.     .item_name      = av_default_item_name,

  3128.     .option         = mxf_options,

  3129.     .version        = LIBAVUTIL_VERSION_INT,

  3130. };

  3131. 

  3132. static const AVOption d10_options[] = {

  3133.     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",

  3134.       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},

  3135.     MXF_COMMON_OPTIONS

  3136.     { "store_user_comments", "",

  3137.       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},

  3138.     { NULL },

  3139. };

  3140. 

  3141. static const AVClass mxf_d10_muxer_class = {

  3142.     .class_name     = "MXF-D10 muxer",

  3143.     .item_name      = av_default_item_name,

  3144.     .option         = d10_options,

  3145.     .version        = LIBAVUTIL_VERSION_INT,

  3146. };

  3147. 

  3148. static const AVOption opatom_options[] = {

  3149.     { "mxf_audio_edit_rate", "Audio edit rate for timecode",

  3150.         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },

  3151.     MXF_COMMON_OPTIONS

  3152.     { "store_user_comments", "",

  3153.       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},

  3154.     { NULL },

  3155. };

  3156. 

  3157. static const AVClass mxf_opatom_muxer_class = {

  3158.     .class_name     = "MXF-OPAtom muxer",

  3159.     .item_name      = av_default_item_name,

  3160.     .option         = opatom_options,

  3161.     .version        = LIBAVUTIL_VERSION_INT,

  3162. };

  3163. 

  3164. AVOutputFormat ff_mxf_muxer = {

  3165.     .name              = "mxf",

  3166.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),

  3167.     .mime_type         = "application/mxf",

  3168.     .extensions        = "mxf",

  3169.     .priv_data_size    = sizeof(MXFContext),

  3170.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  3171.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  3172.     .write_header      = mxf_write_header,

  3173.     .write_packet      = mxf_write_packet,

  3174.     .write_trailer     = mxf_write_footer,

  3175.     .deinit            = mxf_deinit,

  3176.     .flags             = AVFMT_NOTIMESTAMPS,

  3177.     .interleave_packet = mxf_interleave,

  3178.     .priv_class        = &mxf_muxer_class,

  3179. };

  3180. 

  3181. AVOutputFormat ff_mxf_d10_muxer = {

  3182.     .name              = "mxf_d10",

  3183.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),

  3184.     .mime_type         = "application/mxf",

  3185.     .priv_data_size    = sizeof(MXFContext),

  3186.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  3187.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  3188.     .write_header      = mxf_write_header,

  3189.     .write_packet      = mxf_write_packet,

  3190.     .write_trailer     = mxf_write_footer,

  3191.     .deinit            = mxf_deinit,

  3192.     .flags             = AVFMT_NOTIMESTAMPS,

  3193.     .interleave_packet = mxf_interleave,

  3194.     .priv_class        = &mxf_d10_muxer_class,

  3195. };

  3196. 

  3197. AVOutputFormat ff_mxf_opatom_muxer = {

  3198.     .name              = "mxf_opatom",

  3199.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),

  3200.     .mime_type         = "application/mxf",

  3201.     .extensions        = "mxf",

  3202.     .priv_data_size    = sizeof(MXFContext),

  3203.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  3204.     .video_codec       = AV_CODEC_ID_DNXHD,

  3205.     .write_header      = mxf_write_header,

  3206.     .write_packet      = mxf_write_packet,

  3207.     .write_trailer     = mxf_write_footer,

  3208.     .deinit            = mxf_deinit,

  3209.     .flags             = AVFMT_NOTIMESTAMPS,

  3210.     .interleave_packet = mxf_interleave,

  3211.     .priv_class        = &mxf_opatom_muxer_class,

  3212. };