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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 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/h264.h"

  52. #include "libavcodec/internal.h"

  53. #include "audiointerleave.h"

  54. #include "avformat.h"

  55. #include "avio_internal.h"

  56. #include "internal.h"

  57. #include "mxf.h"

  58. #include "config.h"

  59. 

  60. extern AVOutputFormat ff_mxf_d10_muxer;

  61. extern AVOutputFormat ff_mxf_opatom_muxer;

  62. 

  63. #define EDIT_UNITS_PER_BODY 250

  64. #define KAG_SIZE 512

  65. 

  66. typedef struct MXFLocalTagPair {

  67.     int local_tag;

  68.     UID uid;

  69. } MXFLocalTagPair;

  70. 

  71. typedef struct MXFIndexEntry {

  72.     uint8_t flags;

  73.     uint64_t offset;

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

  75.     uint16_t temporal_ref;

  76. } MXFIndexEntry;

  77. 

  78. typedef struct MXFStreamContext {

  79.     AudioInterleaveContext aic;

  80.     UID track_essence_element_key;

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

  82.     const UID *codec_ul;

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

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

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

  86.     int component_depth;

  87.     int color_siting;

  88.     int signal_standard;

  89.     int h_chroma_sub_sample;

  90.     int temporal_reordering;

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

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

  93.     int video_bit_rate;

  94. } MXFStreamContext;

  95. 

  96. typedef struct MXFContainerEssenceEntry {

  97.     UID container_ul;

  98.     UID element_ul;

  99.     UID codec_ul;

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

  101. } MXFContainerEssenceEntry;

  102. 

  103. static const struct {

  104.     enum AVCodecID id;

  105.     int index;

  106. } mxf_essence_mappings[] = {

  107.     { AV_CODEC_ID_MPEG2VIDEO, 0 },

  108.     { AV_CODEC_ID_PCM_S24LE,  1 },

  109.     { AV_CODEC_ID_PCM_S16LE,  1 },

  110.     { AV_CODEC_ID_DVVIDEO,   15 },

  111.     { AV_CODEC_ID_DNXHD,     24 },

  112.     { AV_CODEC_ID_JPEG2000,  34 },

  113.     { AV_CODEC_ID_H264,      35 },

  114.     { AV_CODEC_ID_NONE }

  115. };

  116. 

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

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

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

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

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

  122. 

  123. static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {

  124.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },

  125.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  126.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  127.       mxf_write_mpegvideo_desc },

  128.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },

  129.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },

  130.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  131.       mxf_write_aes3_desc },

  132.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },

  133.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },

  134.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  135.       mxf_write_wav_desc },

  136.     // D-10 625/50 PAL 50mb/s

  137.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },

  138.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  139.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },

  140.       mxf_write_cdci_desc },

  141.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },

  142.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  143.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  144.       mxf_write_generic_sound_desc },

  145.     // D-10 525/60 NTSC 50mb/s

  146.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },

  147.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  148.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },

  149.       mxf_write_cdci_desc },

  150.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },

  151.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  152.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  153.       mxf_write_generic_sound_desc },

  154.     // D-10 625/50 PAL 40mb/s

  155.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },

  156.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  157.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },

  158.       mxf_write_cdci_desc },

  159.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },

  160.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  161.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  162.       mxf_write_generic_sound_desc },

  163.     // D-10 525/60 NTSC 40mb/s

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

  165.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  167.       mxf_write_cdci_desc },

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

  169.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

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

  171.       mxf_write_generic_sound_desc },

  172.     // D-10 625/50 PAL 30mb/s

  173.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },

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

  175.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },

  176.       mxf_write_cdci_desc },

  177.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },

  178.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  179.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  180.       mxf_write_generic_sound_desc },

  181.     // D-10 525/60 NTSC 30mb/s

  182.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },

  183.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  184.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },

  185.       mxf_write_cdci_desc },

  186.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },

  187.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

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

  189.       mxf_write_generic_sound_desc },

  190.     // DV Unknown

  191.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },

  192.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  193.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },

  194.       mxf_write_cdci_desc },

  195.     // DV25 525/60

  196.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },

  197.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  198.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },

  199.       mxf_write_cdci_desc },

  200.     // DV25 625/50

  201.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },

  202.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  203.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },

  204.       mxf_write_cdci_desc },

  205.     // DV50 525/60

  206.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },

  207.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

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

  209.       mxf_write_cdci_desc },

  210.     // DV50 625/50

  211.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },

  212.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  213.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },

  214.       mxf_write_cdci_desc },

  215.     // DV100 1080/60

  216.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },

  217.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  218.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },

  219.       mxf_write_cdci_desc },

  220.     // DV100 1080/50

  221.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },

  222.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  223.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },

  224.       mxf_write_cdci_desc },

  225.     // DV100 720/60

  226.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },

  227.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  228.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },

  229.       mxf_write_cdci_desc },

  230.     // DV100 720/50

  231.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },

  232.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  233.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },

  234.       mxf_write_cdci_desc },

  235.     // DNxHD 1080p 10bit high

  236.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  237.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  238.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },

  239.       mxf_write_cdci_desc },

  240.     // DNxHD 1080p 8bit medium

  241.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  242.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  243.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },

  244.       mxf_write_cdci_desc },

  245.     // DNxHD 1080p 8bit high

  246.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  247.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  248.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },

  249.       mxf_write_cdci_desc },

  250.     // DNxHD 1080i 10bit high

  251.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  252.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  253.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },

  254.       mxf_write_cdci_desc },

  255.     // DNxHD 1080i 8bit medium

  256.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  257.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  258.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },

  259.       mxf_write_cdci_desc },

  260.     // DNxHD 1080i 8bit high

  261.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  262.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  263.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },

  264.       mxf_write_cdci_desc },

  265.     // DNxHD 720p 10bit

  266.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  267.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  268.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },

  269.       mxf_write_cdci_desc },

  270.     // DNxHD 720p 8bit high

  271.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  272.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  273.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },

  274.       mxf_write_cdci_desc },

  275.     // DNxHD 720p 8bit medium

  276.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  277.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  278.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },

  279.       mxf_write_cdci_desc },

  280.     // DNxHD 720p 8bit low

  281.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  282.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  283.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },

  284.       mxf_write_cdci_desc },

  285.     // JPEG2000

  286.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },

  287.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },

  288.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },

  289.       mxf_write_cdci_desc },

  290.     // H.264

  291.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },

  292.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  293.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  294.       mxf_write_mpegvideo_desc },

  295.     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  296.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  297.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  298.       NULL },

  299. };

  300. 

  301. typedef struct MXFContext {

  302.     AVClass *av_class;

  303.     int64_t footer_partition_offset;

  304.     int essence_container_count;

  305.     AVRational time_base;

  306.     int header_written;

  307.     MXFIndexEntry *index_entries;

  308.     unsigned edit_units_count;

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

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

  311.     int last_indexed_edit_unit;

  312.     uint64_t *body_partition_offset;

  313.     unsigned body_partitions_count;

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

  315.     uint64_t duration;

  316.     AVTimecode tc;       ///< timecode context

  317.     AVStream *timecode_track;

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

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

  320.     uint64_t body_offset;

  321.     uint32_t instance_number;

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

  323.     int channel_count;

  324.     int signal_standard;

  325.     uint32_t tagged_value_count;

  326.     AVRational audio_edit_rate;

  327.     int store_user_comments;

  328. } MXFContext;

  329. 

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

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

  332. 

  333. /**

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

  335.  */

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

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

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

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

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

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

  342. 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

  343. 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

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

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

  346. 

  347. /**

  348.  * partial key for header metadata

  349.  */

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

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

  352. 

  353. /**

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

  355.  */

  356. static const MXFLocalTagPair mxf_local_tag_batch[] = {

  357.     // preface set

  358.     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */

  359.     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */

  360.     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */

  361.     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */

  362.     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */

  363.     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */

  364.     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */

  365.     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */

  366.     // Identification

  367.     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */

  368.     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */

  369.     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */

  370.     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */

  371.     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */

  372.     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */

  373.     // Content Storage

  374.     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */

  375.     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */

  376.     // Essence Container Data

  377.     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */

  378.     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */

  379.     // Package

  380.     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */

  381.     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */

  382.     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */

  383.     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */

  384.     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */

  385.     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */

  386.     // Track

  387.     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */

  388.     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */

  389.     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */

  390.     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */

  391.     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */

  392.     // Sequence

  393.     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */

  394.     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */

  395.     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */

  396.     // Source Clip

  397.     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */

  398.     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */

  399.     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */

  400.     // Timecode Component

  401.     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */

  402.     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */

  403.     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */

  404.     // File Descriptor

  405.     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */

  406.     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */

  407.     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */

  408.     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */

  409.     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */

  410.     // Generic Picture Essence Descriptor

  411.     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */

  412.     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */

  413.     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */

  414.     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */

  415.     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */

  416.     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */

  417.     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */

  418.     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */

  419.     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */

  420.     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */

  421.     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */

  422.     // CDCI Picture Essence Descriptor

  423.     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */

  424.     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */

  425.     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */

  426.     // Generic Sound Essence Descriptor

  427.     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */

  428.     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */

  429.     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */

  430.     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */

  431.     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */

  432.     // Index Table Segment

  433.     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */

  434.     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */

  435.     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */

  436.     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */

  437.     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */

  438.     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */

  439.     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */

  440.     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */

  441.     // MPEG video Descriptor

  442.     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */

  443.     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */

  444.     // Wave Audio Essence Descriptor

  445.     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */

  446.     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */

  447. };

  448. 

  449. static const MXFLocalTagPair mxf_user_comments_local_tag[] = {

  450.     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */

  451.     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */

  452.     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */

  453. };

  454. 

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

  456. {

  457.     avio_write(pb, uuid_base, 12);

  458.     avio_wb16(pb, type);

  459.     avio_wb16(pb, value);

  460. }

  461. 

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

  463. {

  464.     MXFContext *mxf = s->priv_data;

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

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

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

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

  469. }

  470. 

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

  472. {

  473.     avio_wb32(pb, ref_count);

  474.     avio_wb32(pb, 16);

  475. }

  476. 

  477. static int klv_ber_length(uint64_t len)

  478. {

  479.     if (len < 128)

  480.         return 1;

  481.     else

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

  483. }

  484. 

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

  486. {

  487.     // Determine the best BER size

  488.     int size;

  489.     if (len < 128) {

  490.         //short form

  491.         avio_w8(pb, len);

  492.         return 1;

  493.     }

  494. 

  495.     size = (av_log2(len) >> 3) + 1;

  496. 

  497.     // long form

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

  499.     while(size) {

  500.         size--;

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

  502.     }

  503.     return 0;

  504. }

  505. 

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

  507. {

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

  509.     avio_wb24(pb, len);

  510. }

  511. 

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

  513. {

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

  515.     avio_wb64(pb, len);

  516. }

  517. 

  518. /*

  519.  * Get essence container ul index

  520.  */

  521. static int mxf_get_essence_container_ul_index(enum AVCodecID id)

  522. {

  523.     int i;

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

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

  526.             return mxf_essence_mappings[i].index;

  527.     return -1;

  528. }

  529. 

  530. static void mxf_write_primer_pack(AVFormatContext *s)

  531. {

  532.     MXFContext *mxf = s->priv_data;

  533.     AVIOContext *pb = s->pb;

  534.     int local_tag_number, i = 0;

  535. 

  536.     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);

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

  538. 

  539.     avio_write(pb, primer_pack_key, 16);

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

  541. 

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

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

  544. 

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

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

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

  548.     }

  549.     if (mxf->store_user_comments)

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

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

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

  553.         }

  554. }

  555. 

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

  557. {

  558.     avio_wb16(pb, tag);

  559.     avio_wb16(pb, size);

  560. }

  561. 

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

  563. {

  564.     avio_write(pb, header_metadata_key, 13);

  565.     avio_wb24(pb, value);

  566. }

  567. 

  568. static void mxf_free(AVFormatContext *s)

  569. {

  570.     int i;

  571. 

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

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

  574.         av_freep(&st->priv_data);

  575.     }

  576. }

  577. 

  578. static const MXFCodecUL *mxf_get_data_definition_ul(int type)

  579. {

  580.     const MXFCodecUL *uls = ff_mxf_data_definition_uls;

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

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

  583.             break;

  584.         uls++;

  585.     }

  586.     return uls;

  587. }

  588. 

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

  590. #define DESCRIPTOR_COUNT(essence_container_count) \

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

  592. 

  593. static void mxf_write_essence_container_refs(AVFormatContext *s)

  594. {

  595.     MXFContext *c = s->priv_data;

  596.     AVIOContext *pb = s->pb;

  597.     int i;

  598. 

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

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

  601.     for (i = 0; i < c->essence_container_count; i++) {

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

  603.         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);

  604.     }

  605. 

  606.     if (c->essence_container_count > 1)

  607.         avio_write(pb, multiple_desc_ul, 16);

  608. }

  609. 

  610. static void mxf_write_preface(AVFormatContext *s)

  611. {

  612.     MXFContext *mxf = s->priv_data;

  613.     AVIOContext *pb = s->pb;

  614. 

  615.     mxf_write_metadata_key(pb, 0x012f00);

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

  617.     klv_encode_ber_length(pb, 130 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));

  618. 

  619.     // write preface set uid

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

  621.     mxf_write_uuid(pb, Preface, 0);

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

  623. 

  624.     // last modified date

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

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

  627. 

  628.     // write version

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

  630.     avio_wb16(pb, 258); // v1.2

  631. 

  632.     // write identification_refs

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

  634.     mxf_write_refs_count(pb, 1);

  635.     mxf_write_uuid(pb, Identification, 0);

  636. 

  637.     // write content_storage_refs

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

  639.     mxf_write_uuid(pb, ContentStorage, 0);

  640. 

  641.     // operational pattern

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

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

  644.         avio_write(pb, opatom_ul, 16);

  645.     else

  646.         avio_write(pb, op1a_ul, 16);

  647. 

  648.     // write essence_container_refs

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

  650.     mxf_write_essence_container_refs(s);

  651. 

  652.     // write dm_scheme_refs

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

  654.     avio_wb64(pb, 0);

  655. }

  656. 

  657. /*

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

  659.  * from decoding the utf-8 string.

  660.  */

  661. static uint64_t mxf_utf16len(const char *utf8_str)

  662. {

  663.     const uint8_t *q = utf8_str;

  664.     uint64_t size = 0;

  665.     while (*q) {

  666.         uint32_t ch;

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

  668.         if (ch < 0x10000)

  669.             size++;

  670.         else

  671.             size += 2;

  672.         continue;

  673. invalid:

  674.         av_log(NULL, AV_LOG_ERROR, "Invaid UTF8 sequence in mxf_utf16len\n\n");

  675.     }

  676.     size += 1;

  677.     return size;

  678. }

  679. 

  680. /*

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

  682.  */

  683. static int mxf_utf16_local_tag_length(const char *utf8_str)

  684. {

  685.     uint64_t size;

  686. 

  687.     if (!utf8_str)

  688.         return 0;

  689. 

  690.     size = mxf_utf16len(utf8_str);

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

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

  693.         return 0;

  694.     }

  695. 

  696.     return 4 + size * 2;

  697. }

  698. 

  699. /*

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

  701.  */

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

  703. {

  704.     uint64_t size = mxf_utf16len(value);

  705. 

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

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

  708.         return;

  709.     }

  710. 

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

  712.     avio_put_str16be(pb, value);

  713. }

  714. 

  715. static void mxf_write_identification(AVFormatContext *s)

  716. {

  717.     MXFContext *mxf = s->priv_data;

  718.     AVIOContext *pb = s->pb;

  719.     const char *company = "FFmpeg";

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

  721.     const char *version;

  722.     int length;

  723. 

  724.     mxf_write_metadata_key(pb, 0x013000);

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

  726. 

  727.     version = s->flags & AVFMT_FLAG_BITEXACT ?

  728.         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);

  729.     length = 72 + mxf_utf16_local_tag_length(company) +

  730.                   mxf_utf16_local_tag_length(product) +

  731.                   mxf_utf16_local_tag_length(version);

  732.     klv_encode_ber_length(pb, length);

  733. 

  734.     // write uid

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

  736.     mxf_write_uuid(pb, Identification, 0);

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

  738. 

  739.     // write generation uid

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

  741.     mxf_write_uuid(pb, Identification, 1);

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

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

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

  745. 

  746.     // write product uid

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

  748.     mxf_write_uuid(pb, Identification, 2);

  749. 

  750.     // modification date

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

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

  753. }

  754. 

  755. static void mxf_write_content_storage(AVFormatContext *s)

  756. {

  757.     AVIOContext *pb = s->pb;

  758. 

  759.     mxf_write_metadata_key(pb, 0x011800);

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

  761.     klv_encode_ber_length(pb, 92);

  762. 

  763.     // write uid

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

  765.     mxf_write_uuid(pb, ContentStorage, 0);

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

  767. 

  768.     // write package reference

  769.     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);

  770.     mxf_write_refs_count(pb, 2);

  771.     mxf_write_uuid(pb, MaterialPackage, 0);

  772.     mxf_write_uuid(pb, SourcePackage, 0);

  773. 

  774.     // write essence container data

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

  776.     mxf_write_refs_count(pb, 1);

  777.     mxf_write_uuid(pb, EssenceContainerData, 0);

  778. }

  779. 

  780. static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)

  781. {

  782.     MXFContext *mxf = s->priv_data;

  783.     AVIOContext *pb = s->pb;

  784.     MXFStreamContext *sc = st->priv_data;

  785. 

  786.     mxf_write_metadata_key(pb, 0x013b00);

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

  788.     klv_encode_ber_length(pb, 80);

  789. 

  790.     // write track uid

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

  792.     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);

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

  794. 

  795.     // write track id

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

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

  798. 

  799.     // write track number

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

  801.     if (type == MaterialPackage)

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

  803.     else

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

  805. 

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

  807. 

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

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

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

  811.     } else {

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

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

  814.     }

  815. 

  816.     // write origin

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

  818.     avio_wb64(pb, 0);

  819. 

  820.     // write sequence refs

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

  822.     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);

  823. }

  824. 

  825. 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 };

  826. 

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

  828. {

  829.     MXFContext *mxf = s->priv_data;

  830.     AVIOContext *pb = s->pb;

  831. 

  832.     // find data define uls

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

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

  835.         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);

  836.     else {

  837.         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);

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

  839.     }

  840. 

  841.     // write duration

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

  843. 

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

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

  846.     } else {

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

  848.     }

  849. }

  850. 

  851. static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)

  852. {

  853.     MXFContext *mxf = s->priv_data;

  854.     AVIOContext *pb = s->pb;

  855.     enum MXFMetadataSetType component;

  856. 

  857.     mxf_write_metadata_key(pb, 0x010f00);

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

  859.     klv_encode_ber_length(pb, 80);

  860. 

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

  862.     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);

  863. 

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

  865.     mxf_write_common_fields(s, st);

  866. 

  867.     // write structural component

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

  869.     mxf_write_refs_count(pb, 1);

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

  871.         component = TimecodeComponent;

  872.     else

  873.         component = SourceClip;

  874.     if (type == SourcePackage)

  875.         component += TypeBottom;

  876.     mxf_write_uuid(pb, component, st->index);

  877. }

  878. 

  879. static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)

  880. {

  881.     MXFContext *mxf = s->priv_data;

  882.     AVIOContext *pb = s->pb;

  883. 

  884.     mxf_write_metadata_key(pb, 0x011400);

  885.     klv_encode_ber_length(pb, 75);

  886. 

  887.     // UID

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

  889.     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :

  890.                    TimecodeComponent + TypeBottom, st->index);

  891. 

  892.     mxf_write_common_fields(s, st);

  893. 

  894.     // Start Time Code

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

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

  897. 

  898.     // Rounded Time Code Base

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

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

  901. 

  902.     // Drop Frame

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

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

  905. }

  906. 

  907. static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)

  908. {

  909.     AVIOContext *pb = s->pb;

  910.     int i;

  911. 

  912.     mxf_write_metadata_key(pb, 0x011100);

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

  914.     klv_encode_ber_length(pb, 108);

  915. 

  916.     // write uid

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

  918.     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);

  919. 

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

  921.     mxf_write_common_fields(s, st);

  922. 

  923.     // write start_position

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

  925.     avio_wb64(pb, 0);

  926. 

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

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

  929.     if (type == SourcePackage) {

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

  931.             avio_wb64(pb, 0);

  932.     } else

  933.         mxf_write_umid(s, 1);

  934. 

  935.     // write source track id

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

  937.     if (type == SourcePackage)

  938.         avio_wb32(pb, 0);

  939.     else

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

  941. }

  942. 

  943. static void mxf_write_multi_descriptor(AVFormatContext *s)

  944. {

  945.     MXFContext *mxf = s->priv_data;

  946.     AVIOContext *pb = s->pb;

  947.     const uint8_t *ul;

  948.     int i;

  949. 

  950.     mxf_write_metadata_key(pb, 0x014400);

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

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

  953. 

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

  955.     mxf_write_uuid(pb, MultipleDescriptor, 0);

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

  957. 

  958.     // write sample rate

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

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

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

  962. 

  963.     // write essence container ul

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

  965.     if (mxf->essence_container_count > 1)

  966.         ul = multiple_desc_ul;

  967.     else {

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

  969.         ul = mxf_essence_container_uls[sc->index].container_ul;

  970.     }

  971.     avio_write(pb, ul, 16);

  972. 

  973.     // write sub descriptor refs

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

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

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

  977.         mxf_write_uuid(pb, SubDescriptor, i);

  978. }

  979. 

  980. static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  981. {

  982.     MXFContext *mxf = s->priv_data;

  983.     MXFStreamContext *sc = st->priv_data;

  984.     AVIOContext *pb = s->pb;

  985. 

  986.     avio_write(pb, key, 16);

  987.     klv_encode_ber4_length(pb, size+20+8+12+20);

  988. 

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

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

  991. 

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

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

  994. 

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

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

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

  998. 

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

  1000.     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);

  1001. }

  1002. 

  1003. static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };

  1004. static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };

  1005. static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };

  1006. static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };

  1007. static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };

  1008. 

  1009. static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1010. {

  1011.     MXFStreamContext *sc = st->priv_data;

  1012.     AVIOContext *pb = s->pb;

  1013.     int stored_height = (st->codec->height+15)/16*16;

  1014.     int display_height;

  1015.     int f1, f2;

  1016.     unsigned desc_size = size+8+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20+5;

  1017.     if (sc->interlaced && sc->field_dominance)

  1018.         desc_size += 5;

  1019.     if (sc->signal_standard)

  1020.         desc_size += 5;

  1021. 

  1022.     mxf_write_generic_desc(s, st, key, desc_size);

  1023. 

  1024.     mxf_write_local_tag(pb, 4, 0x3203);

  1025.     avio_wb32(pb, st->codec->width);

  1026. 

  1027.     mxf_write_local_tag(pb, 4, 0x3202);

  1028.     avio_wb32(pb, stored_height>>sc->interlaced);

  1029. 

  1030.     mxf_write_local_tag(pb, 4, 0x3209);

  1031.     avio_wb32(pb, st->codec->width);

  1032. 

  1033.     if (st->codec->height == 608) // PAL + VBI

  1034.         display_height = 576;

  1035.     else if (st->codec->height == 512)  // NTSC + VBI

  1036.         display_height = 486;

  1037.     else

  1038.         display_height = st->codec->height;

  1039. 

  1040.     mxf_write_local_tag(pb, 4, 0x3208);

  1041.     avio_wb32(pb, display_height>>sc->interlaced);

  1042. 

  1043.     // presentation Y offset

  1044.     mxf_write_local_tag(pb, 4, 0x320B);

  1045.     avio_wb32(pb, (st->codec->height - display_height)>>sc->interlaced);

  1046. 

  1047.     // component depth

  1048.     mxf_write_local_tag(pb, 4, 0x3301);

  1049.     avio_wb32(pb, sc->component_depth);

  1050. 

  1051.     // horizontal subsampling

  1052.     mxf_write_local_tag(pb, 4, 0x3302);

  1053.     avio_wb32(pb, sc->h_chroma_sub_sample);

  1054. 

  1055.     // color siting

  1056.     mxf_write_local_tag(pb, 1, 0x3303);

  1057.     avio_w8(pb, sc->color_siting);

  1058. 

  1059.     if (sc->signal_standard) {

  1060.         mxf_write_local_tag(pb, 1, 0x3215);

  1061.         avio_w8(pb, sc->signal_standard);

  1062.     }

  1063. 

  1064.     // frame layout

  1065.     mxf_write_local_tag(pb, 1, 0x320C);

  1066.     avio_w8(pb, sc->interlaced);

  1067. 

  1068.     // video line map

  1069.     switch (st->codec->height) {

  1070.     case  576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;

  1071.     case  608: f1 =  7; f2 = 320; break;

  1072.     case  480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;

  1073.     case  512: f1 =  7; f2 = 270; break;

  1074.     case  720: f1 = 26; f2 =   0; break; // progressive

  1075.     case 1080: f1 = 21; f2 = 584; break;

  1076.     default:   f1 =  0; f2 =   0; break;

  1077.     }

  1078. 

  1079.     if (!sc->interlaced) {

  1080.         f2  = 0;

  1081.         f1 *= 2;

  1082.     }

  1083. 

  1084.     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);

  1085.     avio_wb32(pb, sc->interlaced ? 2 : 1);

  1086.     avio_wb32(pb, 4);

  1087.     avio_wb32(pb, f1);

  1088.     if (sc->interlaced)

  1089.         avio_wb32(pb, f2);

  1090. 

  1091.     mxf_write_local_tag(pb, 8, 0x320E);

  1092.     avio_wb32(pb, sc->aspect_ratio.num);

  1093.     avio_wb32(pb, sc->aspect_ratio.den);

  1094. 

  1095.     mxf_write_local_tag(pb, 16, 0x3201);

  1096.     avio_write(pb, *sc->codec_ul, 16);

  1097. 

  1098.     if (sc->interlaced && sc->field_dominance) {

  1099.         mxf_write_local_tag(pb, 1, 0x3212);

  1100.         avio_w8(pb, sc->field_dominance);

  1101.     }

  1102. 

  1103. }

  1104. 

  1105. static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)

  1106. {

  1107.     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);

  1108. }

  1109. 

  1110. static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)

  1111. {

  1112.     AVIOContext *pb = s->pb;

  1113.     MXFStreamContext *sc = st->priv_data;

  1114.     int profile_and_level = (st->codec->profile<<4) | st->codec->level;

  1115. 

  1116.     if (st->codec->codec_id != AV_CODEC_ID_H264) {

  1117.         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);

  1118. 

  1119.         // bit rate

  1120.         mxf_write_local_tag(pb, 4, 0x8000);

  1121.         avio_wb32(pb, sc->video_bit_rate);

  1122. 

  1123.         // profile and level

  1124.         mxf_write_local_tag(pb, 1, 0x8007);

  1125.         if (!st->codec->profile)

  1126.             profile_and_level |= 0x80; // escape bit

  1127.         avio_w8(pb, profile_and_level);

  1128.     } else {

  1129.         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);

  1130.     }

  1131. }

  1132. 

  1133. static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1134. {

  1135.     AVIOContext *pb = s->pb;

  1136.     MXFContext *mxf = s->priv_data;

  1137.     int show_warnings = !mxf->footer_partition_offset;

  1138.     int duration_size = 0;

  1139. 

  1140.     if (s->oformat == &ff_mxf_opatom_muxer)

  1141.         duration_size = 12;

  1142. 

  1143.     mxf_write_generic_desc(s, st, key, size+duration_size+5+12+8+8);

  1144. 

  1145.     if (duration_size > 0){

  1146.         mxf_write_local_tag(pb, 8, 0x3002);

  1147.         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);

  1148.     }

  1149. 

  1150.     // audio locked

  1151.     mxf_write_local_tag(pb, 1, 0x3D02);

  1152.     avio_w8(pb, 1);

  1153. 

  1154.     // write audio sampling rate

  1155.     mxf_write_local_tag(pb, 8, 0x3D03);

  1156.     avio_wb32(pb, st->codec->sample_rate);

  1157.     avio_wb32(pb, 1);

  1158. 

  1159.     mxf_write_local_tag(pb, 4, 0x3D07);

  1160.     if (mxf->channel_count == -1) {

  1161.         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))

  1162.             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");

  1163.         avio_wb32(pb, st->codec->channels);

  1164.     } else if (s->oformat == &ff_mxf_d10_muxer) {

  1165.         if (show_warnings && (mxf->channel_count < st->codec->channels))

  1166.             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");

  1167.         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))

  1168.             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");

  1169.         avio_wb32(pb, mxf->channel_count);

  1170.     } else {

  1171.         if (show_warnings && mxf->channel_count != -1 && s->oformat != &ff_mxf_opatom_muxer)

  1172.             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");

  1173.         avio_wb32(pb, st->codec->channels);

  1174.     }

  1175. 

  1176.     mxf_write_local_tag(pb, 4, 0x3D01);

  1177.     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));

  1178. }

  1179. 

  1180. static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1181. {

  1182.     AVIOContext *pb = s->pb;

  1183. 

  1184.     mxf_write_generic_sound_common(s, st, key, size+6+8);

  1185. 

  1186.     mxf_write_local_tag(pb, 2, 0x3D0A);

  1187.     avio_wb16(pb, st->codec->block_align);

  1188. 

  1189.     // avg bytes per sec

  1190.     mxf_write_local_tag(pb, 4, 0x3D09);

  1191.     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);

  1192. }

  1193. 

  1194. static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)

  1195. {

  1196.     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);

  1197. }

  1198. 

  1199. static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)

  1200. {

  1201.     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);

  1202. }

  1203. 

  1204. static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)

  1205. {

  1206.     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);

  1207. }

  1208. 

  1209. 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 };

  1210. 

  1211. static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)

  1212. {

  1213.     MXFContext *mxf = s->priv_data;

  1214.     AVIOContext *pb = s->pb;

  1215.     int name_size = mxf_utf16_local_tag_length(name);

  1216.     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);

  1217. 

  1218.     if (!name_size || indirect_value_size == 13)

  1219.         return 1;

  1220. 

  1221.     mxf_write_metadata_key(pb, 0x013f00);

  1222.     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);

  1223. 

  1224.     // write instance UID

  1225.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1226.     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);

  1227. 

  1228.     // write name

  1229.     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name

  1230. 

  1231.     // write indirect value

  1232.     mxf_write_local_tag(pb, indirect_value_size, 0x5003);

  1233.     avio_write(pb, mxf_indirect_value_utf16le, 17);

  1234.     avio_put_str16le(pb, value);

  1235. 

  1236.     mxf->tagged_value_count++;

  1237.     return 0;

  1238. }

  1239. 

  1240. static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)

  1241. {

  1242.     MXFContext *mxf = s->priv_data;

  1243.     AVDictionaryEntry *t = NULL;

  1244.     int count = 0;

  1245. 

  1246.     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {

  1247.         if (mxf->tagged_value_count >= UINT16_MAX) {

  1248.             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");

  1249.             return count;

  1250.         }

  1251. 

  1252.         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)

  1253.             count++;

  1254.     }

  1255.     return count;

  1256. }

  1257. 

  1258. static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type, const char *package_name)

  1259. {

  1260.     MXFContext *mxf = s->priv_data;

  1261.     AVIOContext *pb = s->pb;

  1262.     int i, track_count = s->nb_streams+1;

  1263.     int name_size = mxf_utf16_local_tag_length(package_name);

  1264.     int user_comment_count = 0;

  1265. 

  1266.     if (type == MaterialPackage) {

  1267.         if (mxf->store_user_comments)

  1268.             user_comment_count = mxf_write_user_comments(s, s->metadata);

  1269.         mxf_write_metadata_key(pb, 0x013600);

  1270.         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);

  1271.         klv_encode_ber_length(pb, 92 + name_size + (16*track_count) + (16*user_comment_count) + 12LL*mxf->store_user_comments);

  1272.     } else {

  1273.         mxf_write_metadata_key(pb, 0x013700);

  1274.         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);

  1275.         klv_encode_ber_length(pb, 112 + name_size + (16*track_count) + 12LL*mxf->store_user_comments); // 20 bytes length for descriptor reference

  1276.     }

  1277. 

  1278.     // write uid

  1279.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1280.     mxf_write_uuid(pb, type, 0);

  1281.     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);

  1282.     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);

  1283. 

  1284.     // write package umid

  1285.     mxf_write_local_tag(pb, 32, 0x4401);

  1286.     mxf_write_umid(s, type == SourcePackage);

  1287.     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);

  1288. 

  1289.     // package name

  1290.     if (name_size)

  1291.         mxf_write_local_tag_utf16(pb, 0x4402, package_name);

  1292. 

  1293.     // package creation date

  1294.     mxf_write_local_tag(pb, 8, 0x4405);

  1295.     avio_wb64(pb, mxf->timestamp);

  1296. 

  1297.     // package modified date

  1298.     mxf_write_local_tag(pb, 8, 0x4404);

  1299.     avio_wb64(pb, mxf->timestamp);

  1300. 

  1301.     // write track refs

  1302.     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);

  1303.     mxf_write_refs_count(pb, track_count);

  1304.     mxf_write_uuid(pb, type == MaterialPackage ? Track :

  1305.                    Track + TypeBottom, -1); // timecode track

  1306.     for (i = 0; i < s->nb_streams; i++)

  1307.         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);

  1308. 

  1309.     // write user comment refs

  1310.     if (mxf->store_user_comments) {

  1311.         mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);

  1312.         mxf_write_refs_count(pb, user_comment_count);

  1313.         for (i = 0; i < user_comment_count; i++)

  1314.             mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);

  1315.     }

  1316. 

  1317.     // write multiple descriptor reference

  1318.     if (type == SourcePackage) {

  1319.         mxf_write_local_tag(pb, 16, 0x4701);

  1320.         if (s->nb_streams > 1) {

  1321.             mxf_write_uuid(pb, MultipleDescriptor, 0);

  1322.             mxf_write_multi_descriptor(s);

  1323.         } else

  1324.             mxf_write_uuid(pb, SubDescriptor, 0);

  1325.     }

  1326. 

  1327.     // write timecode track

  1328.     mxf_write_track(s, mxf->timecode_track, type);

  1329.     mxf_write_sequence(s, mxf->timecode_track, type);

  1330.     mxf_write_timecode_component(s, mxf->timecode_track, type);

  1331. 

  1332.     for (i = 0; i < s->nb_streams; i++) {

  1333.         AVStream *st = s->streams[i];

  1334.         mxf_write_track(s, st, type);

  1335.         mxf_write_sequence(s, st, type);

  1336.         mxf_write_structural_component(s, st, type);

  1337. 

  1338.         if (type == SourcePackage) {

  1339.             MXFStreamContext *sc = st->priv_data;

  1340.             mxf_essence_container_uls[sc->index].write_desc(s, st);

  1341.         }

  1342.     }

  1343. }

  1344. 

  1345. static int mxf_write_essence_container_data(AVFormatContext *s)

  1346. {

  1347.     AVIOContext *pb = s->pb;

  1348. 

  1349.     mxf_write_metadata_key(pb, 0x012300);

  1350.     klv_encode_ber_length(pb, 72);

  1351. 

  1352.     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID

  1353.     mxf_write_uuid(pb, EssenceContainerData, 0);

  1354. 

  1355.     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID

  1356.     mxf_write_umid(s, 1);

  1357. 

  1358.     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID

  1359.     avio_wb32(pb, 1);

  1360. 

  1361.     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID

  1362.     avio_wb32(pb, 2);

  1363. 

  1364.     return 0;

  1365. }

  1366. 

  1367. static int mxf_write_header_metadata_sets(AVFormatContext *s)

  1368. {

  1369.     const char *material_package_name = NULL;

  1370.     const char *file_package_name = NULL;

  1371.     AVDictionaryEntry *entry = NULL;

  1372.     AVStream *st = NULL;

  1373.     int i;

  1374. 

  1375.     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))

  1376.        material_package_name = entry->value;

  1377. 

  1378.     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {

  1379.         file_package_name = entry->value;

  1380.     } else {

  1381.         /* check if any of the streams contain a file_package_name */

  1382.         for (i = 0; i < s->nb_streams; i++) {

  1383.             st = s->streams[i];

  1384.             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {

  1385.                 file_package_name = entry->value;

  1386.                 break;

  1387.             }

  1388.         }

  1389.     }

  1390. 

  1391.     mxf_write_preface(s);

  1392.     mxf_write_identification(s);

  1393.     mxf_write_content_storage(s);

  1394.     mxf_write_package(s, MaterialPackage, material_package_name);

  1395.     mxf_write_package(s, SourcePackage, file_package_name);

  1396.     mxf_write_essence_container_data(s);

  1397.     return 0;

  1398. }

  1399. 

  1400. static unsigned klv_fill_size(uint64_t size)

  1401. {

  1402.     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));

  1403.     if (pad < 20) // smallest fill item possible

  1404.         return pad + KAG_SIZE;

  1405.     else

  1406.         return pad & (KAG_SIZE-1);

  1407. }

  1408. 

  1409. static void mxf_write_index_table_segment(AVFormatContext *s)

  1410. {

  1411.     MXFContext *mxf = s->priv_data;

  1412.     AVIOContext *pb = s->pb;

  1413.     int i, j, temporal_reordering = 0;

  1414.     int key_index = mxf->last_key_index;

  1415. 

  1416.     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);

  1417. 

  1418.     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)

  1419.         return;

  1420. 

  1421.     avio_write(pb, index_table_segment_key, 16);

  1422. 

  1423.     if (mxf->edit_unit_byte_count) {

  1424.         klv_encode_ber_length(pb, 80);

  1425.     } else {

  1426.         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +

  1427.                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));

  1428.     }

  1429. 

  1430.     // instance id

  1431.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1432.     mxf_write_uuid(pb, IndexTableSegment, 0);

  1433. 

  1434.     // index edit rate

  1435.     mxf_write_local_tag(pb, 8, 0x3F0B);

  1436.     avio_wb32(pb, mxf->time_base.den);

  1437.     avio_wb32(pb, mxf->time_base.num);

  1438. 

  1439.     // index start position

  1440.     mxf_write_local_tag(pb, 8, 0x3F0C);

  1441.     avio_wb64(pb, mxf->last_indexed_edit_unit);

  1442. 

  1443.     // index duration

  1444.     mxf_write_local_tag(pb, 8, 0x3F0D);

  1445.     if (mxf->edit_unit_byte_count)

  1446.         avio_wb64(pb, 0); // index table covers whole container

  1447.     else

  1448.         avio_wb64(pb, mxf->edit_units_count);

  1449. 

  1450.     // edit unit byte count

  1451.     mxf_write_local_tag(pb, 4, 0x3F05);

  1452.     avio_wb32(pb, mxf->edit_unit_byte_count);

  1453. 

  1454.     // index sid

  1455.     mxf_write_local_tag(pb, 4, 0x3F06);

  1456.     avio_wb32(pb, 2);

  1457. 

  1458.     // body sid

  1459.     mxf_write_local_tag(pb, 4, 0x3F07);

  1460.     avio_wb32(pb, 1);

  1461. 

  1462.     if (!mxf->edit_unit_byte_count) {

  1463.         // real slice count - 1

  1464.         mxf_write_local_tag(pb, 1, 0x3F08);

  1465.         avio_w8(pb, mxf->slice_count);

  1466. 

  1467.         // delta entry array

  1468.         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);

  1469.         avio_wb32(pb, s->nb_streams+1); // num of entries

  1470.         avio_wb32(pb, 6);               // size of one entry

  1471.         // write system item delta entry

  1472.         avio_w8(pb, 0);

  1473.         avio_w8(pb, 0); // slice entry

  1474.         avio_wb32(pb, 0); // element delta

  1475.         for (i = 0; i < s->nb_streams; i++) {

  1476.             AVStream *st = s->streams[i];

  1477.             MXFStreamContext *sc = st->priv_data;

  1478.             avio_w8(pb, sc->temporal_reordering);

  1479.             if (sc->temporal_reordering)

  1480.                 temporal_reordering = 1;

  1481.             if (i == 0) { // video track

  1482.                 avio_w8(pb, 0); // slice number

  1483.                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill

  1484.             } else { // audio track

  1485.                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;

  1486.                 audio_frame_size += klv_fill_size(audio_frame_size);

  1487.                 avio_w8(pb, 1);

  1488.                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta

  1489.             }

  1490.         }

  1491. 

  1492.         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);

  1493.         avio_wb32(pb, mxf->edit_units_count);  // num of entries

  1494.         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry

  1495. 

  1496.         for (i = 0; i < mxf->edit_units_count; i++) {

  1497.             int temporal_offset = 0;

  1498. 

  1499.             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame

  1500.                 mxf->last_key_index = key_index;

  1501.                 key_index = i;

  1502.             }

  1503. 

  1504.             if (temporal_reordering) {

  1505.                 int pic_num_in_gop = i - key_index;

  1506.                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {

  1507.                     for (j = key_index; j < mxf->edit_units_count; j++) {

  1508.                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)

  1509.                             break;

  1510.                     }

  1511.                     if (j == mxf->edit_units_count)

  1512.                         av_log(s, AV_LOG_WARNING, "missing frames\n");

  1513.                     temporal_offset = j - key_index - pic_num_in_gop;

  1514.                 }

  1515.             }

  1516.             avio_w8(pb, temporal_offset);

  1517. 

  1518.             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction

  1519.                 avio_w8(pb, mxf->last_key_index - i);

  1520.             } else {

  1521.                 avio_w8(pb, key_index - i); // key frame offset

  1522.                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward

  1523.                     mxf->last_key_index = key_index;

  1524.             }

  1525. 

  1526.             if (!(mxf->index_entries[i].flags & 0x33) && // I frame

  1527.                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)

  1528.                 mxf->index_entries[i].flags |= 0x80; // random access

  1529.             avio_w8(pb, mxf->index_entries[i].flags);

  1530.             // stream offset

  1531.             avio_wb64(pb, mxf->index_entries[i].offset);

  1532.             if (s->nb_streams > 1)

  1533.                 avio_wb32(pb, mxf->index_entries[i].slice_offset);

  1534.         }

  1535. 

  1536.         mxf->last_key_index = key_index - mxf->edit_units_count;

  1537.         mxf->last_indexed_edit_unit += mxf->edit_units_count;

  1538.         mxf->edit_units_count = 0;

  1539.     }

  1540. }

  1541. 

  1542. static void mxf_write_klv_fill(AVFormatContext *s)

  1543. {

  1544.     unsigned pad = klv_fill_size(avio_tell(s->pb));

  1545.     if (pad) {

  1546.         avio_write(s->pb, klv_fill_key, 16);

  1547.         pad -= 16 + 4;

  1548.         klv_encode_ber4_length(s->pb, pad);

  1549.         ffio_fill(s->pb, 0, pad);

  1550.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  1551.     }

  1552. }

  1553. 

  1554. static int mxf_write_partition(AVFormatContext *s, int bodysid,

  1555.                                 int indexsid,

  1556.                                 const uint8_t *key, int write_metadata)

  1557. {

  1558.     MXFContext *mxf = s->priv_data;

  1559.     AVIOContext *pb = s->pb;

  1560.     int64_t header_byte_count_offset;

  1561.     unsigned index_byte_count = 0;

  1562.     uint64_t partition_offset = avio_tell(pb);

  1563.     int err;

  1564. 

  1565.     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)

  1566.         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +

  1567.             12+mxf->edit_units_count*(11+mxf->slice_count*4);

  1568.     else if (mxf->edit_unit_byte_count && indexsid)

  1569.         index_byte_count = 80;

  1570. 

  1571.     if (index_byte_count) {

  1572.         // add encoded ber length

  1573.         index_byte_count += 16 + klv_ber_length(index_byte_count);

  1574.         index_byte_count += klv_fill_size(index_byte_count);

  1575.     }

  1576. 

  1577.     if (key && !memcmp(key, body_partition_key, 16)) {

  1578.         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,

  1579.                                      sizeof(*mxf->body_partition_offset))) < 0) {

  1580.             mxf->body_partitions_count = 0;

  1581.             return err;

  1582.         }

  1583.         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;

  1584.     }

  1585. 

  1586.     // write klv

  1587.     if (key)

  1588.         avio_write(pb, key, 16);

  1589.     else

  1590.         avio_write(pb, body_partition_key, 16);

  1591. 

  1592.     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));

  1593. 

  1594.     // write partition value

  1595.     avio_wb16(pb, 1); // majorVersion

  1596.     avio_wb16(pb, 2); // minorVersion

  1597.     avio_wb32(pb, KAG_SIZE); // KAGSize

  1598. 

  1599.     avio_wb64(pb, partition_offset); // ThisPartition

  1600. 

  1601.     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)

  1602.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition

  1603.     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)

  1604.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition

  1605.     else

  1606.         avio_wb64(pb, 0);

  1607. 

  1608.     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition

  1609. 

  1610.     // set offset

  1611.     header_byte_count_offset = avio_tell(pb);

  1612.     avio_wb64(pb, 0); // headerByteCount, update later

  1613. 

  1614.     // indexTable

  1615.     avio_wb64(pb, index_byte_count); // indexByteCount

  1616.     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID

  1617. 

  1618.     // BodyOffset

  1619.     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)

  1620.         avio_wb64(pb, mxf->body_offset);

  1621.     else

  1622.         avio_wb64(pb, 0);

  1623. 

  1624.     avio_wb32(pb, bodysid); // bodySID

  1625. 

  1626.     // operational pattern

  1627.     if (s->oformat == &ff_mxf_opatom_muxer)

  1628.         avio_write(pb, opatom_ul, 16);

  1629.     else

  1630.         avio_write(pb, op1a_ul, 16);

  1631. 

  1632.     // essence container

  1633.     mxf_write_essence_container_refs(s);

  1634. 

  1635.     if (write_metadata) {

  1636.         // mark the start of the headermetadata and calculate metadata size

  1637.         int64_t pos, start;

  1638.         unsigned header_byte_count;

  1639. 

  1640.         mxf_write_klv_fill(s);

  1641.         start = avio_tell(s->pb);

  1642.         mxf_write_primer_pack(s);

  1643.         mxf_write_header_metadata_sets(s);

  1644.         pos = avio_tell(s->pb);

  1645.         header_byte_count = pos - start + klv_fill_size(pos);

  1646. 

  1647.         // update header_byte_count

  1648.         avio_seek(pb, header_byte_count_offset, SEEK_SET);

  1649.         avio_wb64(pb, header_byte_count);

  1650.         avio_seek(pb, pos, SEEK_SET);

  1651.     }

  1652. 

  1653.     if(key)

  1654.         avio_flush(pb);

  1655. 

  1656.     return 0;

  1657. }

  1658. 

  1659. static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,

  1660. AVPacket *pkt)

  1661. {

  1662.     MXFContext *mxf = s->priv_data;

  1663.     MXFStreamContext *sc = st->priv_data;

  1664.     int i, cid;

  1665.     uint8_t* header_cid;

  1666.     int frame_size = 0;

  1667. 

  1668.     if (mxf->header_written)

  1669.         return 1;

  1670. 

  1671.     if (pkt->size < 43)

  1672.         return -1;

  1673. 

  1674.     header_cid = pkt->data + 0x28;

  1675.     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];

  1676. 

  1677.     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)

  1678.         return -1;

  1679.     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)

  1680.         return AVERROR_INVALIDDATA;

  1681. 

  1682.     switch (cid) {

  1683.     case 1235:

  1684.         sc->index = 24;

  1685.         sc->component_depth = 10;

  1686.         break;

  1687.     case 1237:

  1688.         sc->index = 25;

  1689.         break;

  1690.     case 1238:

  1691.         sc->index = 26;

  1692.         break;

  1693.     case 1241:

  1694.         sc->index = 27;

  1695.         sc->component_depth = 10;

  1696.         break;

  1697.     case 1242:

  1698.         sc->index = 28;

  1699.         break;

  1700.     case 1243:

  1701.         sc->index = 29;

  1702.         break;

  1703.     case 1250:

  1704.         sc->index = 30;

  1705.         sc->component_depth = 10;

  1706.         break;

  1707.     case 1251:

  1708.         sc->index = 31;

  1709.         break;

  1710.     case 1252:

  1711.         sc->index = 32;

  1712.         break;

  1713.     case 1253:

  1714.         sc->index = 33;

  1715.         break;

  1716.     default:

  1717.         return -1;

  1718.     }

  1719. 

  1720.     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  1721.     sc->aspect_ratio = (AVRational){ 16, 9 };

  1722. 

  1723.     if(s->oformat == &ff_mxf_opatom_muxer){

  1724.         mxf->edit_unit_byte_count = frame_size;

  1725.         return 1;

  1726.     }

  1727. 

  1728.     mxf->edit_unit_byte_count = KAG_SIZE;

  1729.     for (i = 0; i < s->nb_streams; i++) {

  1730.         AVStream *st = s->streams[i];

  1731.         MXFStreamContext *sc = st->priv_data;

  1732.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1733.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1734.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1735.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1736.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1737.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1738.         }

  1739.     }

  1740. 

  1741.     return 1;

  1742. }

  1743. 

  1744. static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1745. {

  1746.     MXFContext *mxf = s->priv_data;

  1747.     MXFStreamContext *sc = st->priv_data;

  1748.     uint8_t *vs_pack, *vsc_pack;

  1749.     int i, ul_index, frame_size, stype, pal;

  1750. 

  1751.     if (mxf->header_written)

  1752.         return 1;

  1753. 

  1754.     // Check for minimal frame size

  1755.     if (pkt->size < 120000)

  1756.         return -1;

  1757. 

  1758.     vs_pack  = pkt->data + 80*5 + 48;

  1759.     vsc_pack = pkt->data + 80*5 + 53;

  1760.     stype    = vs_pack[3] & 0x1f;

  1761.     pal      = (vs_pack[3] >> 5) & 0x1;

  1762. 

  1763.     if ((vs_pack[2] & 0x07) == 0x02)

  1764.         sc->aspect_ratio = (AVRational){ 16, 9 };

  1765.     else

  1766.         sc->aspect_ratio = (AVRational){ 4, 3 };

  1767. 

  1768.     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;

  1769.     // TODO: fix dv encoder to set proper FF/FS value in VSC pack

  1770.     // and set field dominance accordingly

  1771.     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);

  1772. 

  1773.     switch (stype) {

  1774.     case 0x18: // DV100 720p

  1775.         ul_index = 6 + pal;

  1776.         frame_size = pal ? 288000 : 240000;

  1777.         if (sc->interlaced) {

  1778.             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");

  1779.             sc->interlaced = 0;

  1780.         }

  1781.         break;

  1782.     case 0x14: // DV100 1080i

  1783.         ul_index = 4 + pal;

  1784.         frame_size = pal ? 576000 : 480000;

  1785.         break;

  1786.     case 0x04: // DV50

  1787.         ul_index = 2 + pal;

  1788.         frame_size = pal ? 288000 : 240000;

  1789.         break;

  1790.     default: // DV25

  1791.         ul_index = 0 + pal;

  1792.         frame_size = pal ? 144000 : 120000;

  1793.     }

  1794. 

  1795.     sc->index = ul_index + 16;

  1796.     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;

  1797. 

  1798.     if(s->oformat == &ff_mxf_opatom_muxer) {

  1799.         mxf->edit_unit_byte_count = frame_size;

  1800.         return 1;

  1801.     }

  1802. 

  1803.     mxf->edit_unit_byte_count = KAG_SIZE;

  1804.     for (i = 0; i < s->nb_streams; i++) {

  1805.         AVStream *st = s->streams[i];

  1806.         MXFStreamContext *sc = st->priv_data;

  1807.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1808.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1809.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1810.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1811.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1812.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1813.         }

  1814.     }

  1815. 

  1816.     return 1;

  1817. }

  1818. 

  1819. static const struct {

  1820.     UID uid;

  1821.     int frame_size;

  1822.     int profile;

  1823.     uint8_t interlaced;

  1824. } mxf_h264_codec_uls[] = {

  1825.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra

  1826.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60

  1827.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50

  1828.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30

  1829.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25

  1830.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60

  1831.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50

  1832.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra

  1833.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60

  1834.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50

  1835.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30

  1836.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25

  1837.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60

  1838.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50

  1839. };

  1840. 

  1841. static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,

  1842.                                 AVPacket *pkt, MXFIndexEntry *e)

  1843. {

  1844.     MXFContext *mxf = s->priv_data;

  1845.     MXFStreamContext *sc = st->priv_data;

  1846.     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);

  1847.     const uint8_t *buf = pkt->data;

  1848.     const uint8_t *buf_end = pkt->data + pkt->size;

  1849.     uint32_t state = -1;

  1850.     int extra_size = 512; // support AVC Intra files without SPS/PPS header

  1851.     int i, frame_size;

  1852.     uint8_t uid_found;

  1853. 

  1854.     if (pkt->size > extra_size)

  1855.         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header

  1856. 

  1857.     for (;;) {

  1858.         buf = avpriv_find_start_code(buf, buf_end, &state);

  1859.         if (buf >= buf_end)

  1860.             break;

  1861.         --buf;

  1862.         switch (state & 0x1f) {

  1863.         case NAL_SPS:

  1864.             st->codec->profile = buf[1];

  1865.             e->flags |= 0x40;

  1866.             break;

  1867.         case NAL_PPS:

  1868.             if (e->flags & 0x40) { // sequence header present

  1869.                 e->flags |= 0x80; // random access

  1870.                 extra_size = 0;

  1871.                 buf = buf_end;

  1872.             }

  1873.             break;

  1874.         default:

  1875.             break;

  1876.         }

  1877.     }

  1878. 

  1879.     if (mxf->header_written)

  1880.         return 1;

  1881. 

  1882.     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD

  1883.     sc->component_depth = 10; // AVC Intra is always 10 Bit

  1884.     sc->interlaced = st->codec->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;

  1885.     if (sc->interlaced)

  1886.         sc->field_dominance = 1; // top field first is mandatory for AVC Intra

  1887. 

  1888.     uid_found = 0;

  1889.     frame_size = pkt->size + extra_size;

  1890.     for (i = 0; i < mxf_h264_num_codec_uls; i++) {

  1891.         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {

  1892.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  1893.             return 1;

  1894.         } else if (st->codec->profile == mxf_h264_codec_uls[i].profile) {

  1895.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  1896.             uid_found = 1;

  1897.         }

  1898.     }

  1899. 

  1900.     if (!uid_found) {

  1901.         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");

  1902.         return 0;

  1903.     }

  1904. 

  1905.     return 1;

  1906. }

  1907. 

  1908. static const UID mxf_mpeg2_codec_uls[] = {

  1909.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame

  1910.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP

  1911.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame

  1912.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP

  1913.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame

  1914.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP

  1915.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame

  1916.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP

  1917.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame

  1918.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP

  1919. };

  1920. 

  1921. static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)

  1922. {

  1923.     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;

  1924. 

  1925.     if (avctx->profile == 4) { // Main

  1926.         if (avctx->level == 8) // Main

  1927.             return &mxf_mpeg2_codec_uls[0+long_gop];

  1928.         else if (avctx->level == 4) // High

  1929.             return &mxf_mpeg2_codec_uls[4+long_gop];

  1930.         else if (avctx->level == 6) // High 14

  1931.             return &mxf_mpeg2_codec_uls[8+long_gop];

  1932.     } else if (avctx->profile == 0) { // 422

  1933.         if (avctx->level == 5) // Main

  1934.             return &mxf_mpeg2_codec_uls[2+long_gop];

  1935.         else if (avctx->level == 2) // High

  1936.             return &mxf_mpeg2_codec_uls[6+long_gop];

  1937.     }

  1938.     return NULL;

  1939. }

  1940. 

  1941. static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,

  1942.                                  AVPacket *pkt, MXFIndexEntry *e)

  1943. {

  1944.     MXFStreamContext *sc = st->priv_data;

  1945.     uint32_t c = -1;

  1946.     int i;

  1947. 

  1948.     for(i = 0; i < pkt->size - 4; i++) {

  1949.         c = (c<<8) + pkt->data[i];

  1950.         if (c == 0x1b5) {

  1951.             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext

  1952.                 st->codec->profile = pkt->data[i+1] & 0x07;

  1953.                 st->codec->level   = pkt->data[i+2] >> 4;

  1954.             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext

  1955.                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame

  1956.                 if (sc->interlaced)

  1957.                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first

  1958.                 break;

  1959.             }

  1960.         } else if (c == 0x1b8) { // gop

  1961.             if (pkt->data[i+4]>>6 & 0x01) { // closed

  1962.                 sc->closed_gop = 1;

  1963.                 if (e->flags & 0x40) // sequence header present

  1964.                     e->flags |= 0x80; // random access

  1965.             }

  1966.         } else if (c == 0x1b3) { // seq

  1967.             e->flags |= 0x40;

  1968.             switch ((pkt->data[i+4]>>4) & 0xf) {

  1969.             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;

  1970.             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;

  1971.             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;

  1972.             default:

  1973.                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,

  1974.                           st->codec->width, st->codec->height, 1024*1024);

  1975.             }

  1976.         } else if (c == 0x100) { // pic

  1977.             int pict_type = (pkt->data[i+2]>>3) & 0x07;

  1978.             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);

  1979.             if (pict_type == 2) { // P frame

  1980.                 e->flags |= 0x22;

  1981.                 sc->closed_gop = 0; // reset closed gop, don't matter anymore

  1982.             } else if (pict_type == 3) { // B frame

  1983.                 if (sc->closed_gop)

  1984.                     e->flags |= 0x13; // only backward prediction

  1985.                 else

  1986.                     e->flags |= 0x33;

  1987.                 sc->temporal_reordering = -1;

  1988.             } else if (!pict_type) {

  1989.                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");

  1990.                 return 0;

  1991.             }

  1992.         }

  1993.     }

  1994.     if (s->oformat != &ff_mxf_d10_muxer)

  1995.         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);

  1996.     return !!sc->codec_ul;

  1997. }

  1998. 

  1999. static uint64_t mxf_parse_timestamp(time_t timestamp)

  2000. {

  2001.     struct tm tmbuf;

  2002.     struct tm *time = gmtime_r(&timestamp, &tmbuf);

  2003.     if (!time)

  2004.         return 0;

  2005.     return (uint64_t)(time->tm_year+1900) << 48 |

  2006.            (uint64_t)(time->tm_mon+1)     << 40 |

  2007.            (uint64_t) time->tm_mday       << 32 |

  2008.                       time->tm_hour       << 24 |

  2009.                       time->tm_min        << 16 |

  2010.                       time->tm_sec        << 8;

  2011. }

  2012. 

  2013. static void mxf_gen_umid(AVFormatContext *s)

  2014. {

  2015.     MXFContext *mxf = s->priv_data;

  2016.     uint32_t seed = av_get_random_seed();

  2017.     uint64_t umid = seed + 0x5294713400000000LL;

  2018. 

  2019.     AV_WB64(mxf->umid  , umid);

  2020.     AV_WB64(mxf->umid+8, umid>>8);

  2021. 

  2022.     mxf->instance_number = seed & 0xFFFFFF;

  2023. }

  2024. 

  2025. static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)

  2026. {

  2027.     MXFContext *mxf = s->priv_data;

  2028.     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);

  2029.     if (!tcr)

  2030.         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);

  2031. 

  2032.     if (tcr)

  2033.         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);

  2034.     else

  2035.         return av_timecode_init(&mxf->tc, rate, 0, 0, s);

  2036. }

  2037. 

  2038. static int mxf_write_header(AVFormatContext *s)

  2039. {

  2040.     MXFContext *mxf = s->priv_data;

  2041.     int i, ret;

  2042.     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};

  2043.     const MXFSamplesPerFrame *spf = NULL;

  2044.     AVDictionaryEntry *t;

  2045.     int64_t timestamp = 0;

  2046. 

  2047.     if (!s->nb_streams)

  2048.         return -1;

  2049. 

  2050.     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1){

  2051.         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");

  2052.         return -1;

  2053.     }

  2054. 

  2055.     if (!av_dict_get(s->metadata, "comment_", NULL, AV_DICT_IGNORE_SUFFIX))

  2056.         mxf->store_user_comments = 0;

  2057. 

  2058.     for (i = 0; i < s->nb_streams; i++) {

  2059.         AVStream *st = s->streams[i];

  2060.         MXFStreamContext *sc = av_mallocz(sizeof(*sc));

  2061.         if (!sc)

  2062.             return AVERROR(ENOMEM);

  2063.         st->priv_data = sc;

  2064. 

  2065.         if (((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {

  2066.             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");

  2067.             return -1;

  2068.         }

  2069. 

  2070.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  2071.             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codec->pix_fmt);

  2072.             // TODO: should be avg_frame_rate

  2073.             AVRational rate, tbc = st->time_base;

  2074.             // Default component depth to 8

  2075.             sc->component_depth = 8;

  2076.             sc->h_chroma_sub_sample = 2;

  2077.             sc->color_siting = 0xFF;

  2078. 

  2079.             if (pix_desc) {

  2080.                 sc->component_depth     = pix_desc->comp[0].depth;

  2081.                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;

  2082.             }

  2083.             switch (ff_choose_chroma_location(s, st)) {

  2084.             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;

  2085.             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;

  2086.             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;

  2087.             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;

  2088.             }

  2089. 

  2090.             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;

  2091.             spf = ff_mxf_get_samples_per_frame(s, tbc);

  2092.             if (!spf) {

  2093.                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",

  2094.                        tbc.den, tbc.num);

  2095.                 return AVERROR(EINVAL);

  2096.             }

  2097.             mxf->time_base = spf->time_base;

  2098.             rate = av_inv_q(mxf->time_base);

  2099.             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);

  2100.             if((ret = mxf_init_timecode(s, st, rate)) < 0)

  2101.                 return ret;

  2102. 

  2103.             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;

  2104.             if (s->oformat == &ff_mxf_d10_muxer) {

  2105.                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {

  2106.                     sc->index = 3;

  2107.                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && (mxf->time_base.den != 25)) {

  2108.                     sc->index = 5;

  2109.                 } else if (sc->video_bit_rate == 40000000) {

  2110.                     if (mxf->time_base.den == 25) sc->index = 7;

  2111.                     else                          sc->index = 9;

  2112.                 } else if (sc->video_bit_rate == 30000000) {

  2113.                     if (mxf->time_base.den == 25) sc->index = 11;

  2114.                     else                          sc->index = 13;

  2115.                 } else {

  2116.                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");

  2117.                     return -1;

  2118.                 }

  2119. 

  2120.                 mxf->edit_unit_byte_count = KAG_SIZE; // system element

  2121.                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *

  2122.                     mxf->time_base.num / (8*mxf->time_base.den);

  2123.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  2124.                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;

  2125.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  2126. 

  2127.                 sc->signal_standard = 1;

  2128.             }

  2129.             if (mxf->signal_standard >= 0)

  2130.                 sc->signal_standard = mxf->signal_standard;

  2131.         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  2132.             if (st->codec->sample_rate != 48000) {

  2133.                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");

  2134.                 return -1;

  2135.             }

  2136.             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);

  2137.             if (s->oformat == &ff_mxf_d10_muxer) {

  2138.                 if (st->index != 1) {

  2139.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");

  2140.                     return -1;

  2141.                 }

  2142.                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&

  2143.                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {

  2144.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");

  2145.                 }

  2146.                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;

  2147.             } else if (s->oformat == &ff_mxf_opatom_muxer) {

  2148.                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);

  2149. 

  2150.                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&

  2151.                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {

  2152.                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");

  2153.                     return AVERROR_PATCHWELCOME;

  2154.                 }

  2155.                 if (st->codec->channels != 1) {

  2156.                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");

  2157.                     return AVERROR(EINVAL);

  2158.                 }

  2159. 

  2160.                 spf = ff_mxf_get_samples_per_frame(s, tbc);

  2161.                 if (!spf){

  2162.                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);

  2163.                     return AVERROR(EINVAL);

  2164.                 }

  2165. 

  2166.                 mxf->time_base = st->time_base;

  2167.                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)

  2168.                     return ret;

  2169. 

  2170.                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;

  2171.                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;

  2172.                 sc->index = 2;

  2173.             } else {

  2174.                 mxf->slice_count = 1;

  2175.             }

  2176.         }

  2177. 

  2178.         if (!sc->index) {

  2179.             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);

  2180.             if (sc->index == -1) {

  2181.                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "

  2182.                        "codec not currently supported in container\n", i);

  2183.                 return -1;

  2184.             }

  2185.         }

  2186. 

  2187.         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  2188. 

  2189.         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);

  2190.         sc->track_essence_element_key[15] = present[sc->index];

  2191.         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);

  2192. 

  2193.         if (!present[sc->index])

  2194.             mxf->essence_container_count++;

  2195.         present[sc->index]++;

  2196.     }

  2197. 

  2198.     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {

  2199.         mxf->essence_container_count = 1;

  2200.     }

  2201. 

  2202.     if (!(s->flags & AVFMT_FLAG_BITEXACT))

  2203.         mxf_gen_umid(s);

  2204. 

  2205.     for (i = 0; i < s->nb_streams; i++) {

  2206.         MXFStreamContext *sc = s->streams[i]->priv_data;

  2207.         // update element count

  2208.         sc->track_essence_element_key[13] = present[sc->index];

  2209.         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV

  2210.             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);

  2211.         else

  2212.             sc->order = AV_RB32(sc->track_essence_element_key+12);

  2213.     }

  2214. 

  2215.     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))

  2216.         timestamp = ff_iso8601_to_unix_time(t->value);

  2217.     if (timestamp)

  2218.         mxf->timestamp = mxf_parse_timestamp(timestamp);

  2219.     mxf->duration = -1;

  2220. 

  2221.     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));

  2222.     if (!mxf->timecode_track)

  2223.         return AVERROR(ENOMEM);

  2224.     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));

  2225.     if (!mxf->timecode_track->priv_data)

  2226.         return AVERROR(ENOMEM);

  2227.     mxf->timecode_track->index = -1;

  2228. 

  2229.     if (!spf)

  2230.         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });

  2231. 

  2232.     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)

  2233.         return -1;

  2234. 

  2235.     return 0;

  2236. }

  2237. 

  2238. static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };

  2239. 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 };

  2240. 

  2241. static void mxf_write_system_item(AVFormatContext *s)

  2242. {

  2243.     MXFContext *mxf = s->priv_data;

  2244.     AVIOContext *pb = s->pb;

  2245.     unsigned frame;

  2246.     uint32_t time_code;

  2247. 

  2248.     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  2249. 

  2250.     // write system metadata pack

  2251.     avio_write(pb, system_metadata_pack_key, 16);

  2252.     klv_encode_ber4_length(pb, 57);

  2253.     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present

  2254.     avio_w8(pb, 0x04); // content package rate

  2255.     avio_w8(pb, 0x00); // content package type

  2256.     avio_wb16(pb, 0x00); // channel handle

  2257.     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow

  2258.     if (mxf->essence_container_count > 1)

  2259.         avio_write(pb, multiple_desc_ul, 16);

  2260.     else {

  2261.         MXFStreamContext *sc = s->streams[0]->priv_data;

  2262.         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);

  2263.     }

  2264.     avio_w8(pb, 0);

  2265.     avio_wb64(pb, 0);

  2266.     avio_wb64(pb, 0); // creation date/time stamp

  2267. 

  2268.     avio_w8(pb, 0x81); // SMPTE 12M time code

  2269.     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);

  2270.     avio_wb32(pb, time_code);

  2271.     avio_wb32(pb, 0); // binary group data

  2272.     avio_wb64(pb, 0);

  2273. 

  2274.     // write system metadata package set

  2275.     avio_write(pb, system_metadata_package_set_key, 16);

  2276.     klv_encode_ber4_length(pb, 35);

  2277.     avio_w8(pb, 0x83); // UMID

  2278.     avio_wb16(pb, 0x20);

  2279.     mxf_write_umid(s, 1);

  2280. }

  2281. 

  2282. static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  2283. {

  2284.     MXFContext *mxf = s->priv_data;

  2285.     AVIOContext *pb = s->pb;

  2286.     MXFStreamContext *sc = st->priv_data;

  2287.     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /

  2288.         (8*mxf->time_base.den); // frame size

  2289.     int pad;

  2290. 

  2291.     packet_size += 16 + 4;

  2292.     packet_size += klv_fill_size(packet_size);

  2293. 

  2294.     klv_encode_ber4_length(pb, pkt->size);

  2295.     avio_write(pb, pkt->data, pkt->size);

  2296. 

  2297.     // ensure CBR muxing by padding to correct video frame size

  2298.     pad = packet_size - pkt->size - 16 - 4;

  2299.     if (pad > 20) {

  2300.         avio_write(s->pb, klv_fill_key, 16);

  2301.         pad -= 16 + 4;

  2302.         klv_encode_ber4_length(s->pb, pad);

  2303.         ffio_fill(s->pb, 0, pad);

  2304.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  2305.     } else {

  2306.         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");

  2307.         ffio_fill(s->pb, 0, pad);

  2308.     }

  2309. }

  2310. 

  2311. static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  2312. {

  2313.     MXFContext *mxf = s->priv_data;

  2314.     AVIOContext *pb = s->pb;

  2315.     int frame_size = pkt->size / st->codec->block_align;

  2316.     uint8_t *samples = pkt->data;

  2317.     uint8_t *end = pkt->data + pkt->size;

  2318.     int i;

  2319. 

  2320.     klv_encode_ber4_length(pb, 4 + frame_size*4*8);

  2321. 

  2322.     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));

  2323.     avio_wl16(pb, frame_size);

  2324.     avio_w8(pb, (1<<st->codec->channels)-1);

  2325. 

  2326.     while (samples < end) {

  2327.         for (i = 0; i < st->codec->channels; i++) {

  2328.             uint32_t sample;

  2329.             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {

  2330.                 sample = AV_RL24(samples)<< 4;

  2331.                 samples += 3;

  2332.             } else {

  2333.                 sample = AV_RL16(samples)<<12;

  2334.                 samples += 2;

  2335.             }

  2336.             avio_wl32(pb, sample | i);

  2337.         }

  2338.         for (; i < 8; i++)

  2339.             avio_wl32(pb, i);

  2340.     }

  2341. }

  2342. 

  2343. static int mxf_write_opatom_body_partition(AVFormatContext *s)

  2344. {

  2345.     MXFContext *mxf = s->priv_data;

  2346.     AVIOContext *pb = s->pb;

  2347.     AVStream *st = s->streams[0];

  2348.     MXFStreamContext *sc = st->priv_data;

  2349.     const uint8_t *key = NULL;

  2350. 

  2351.     int err;

  2352. 

  2353.     if (!mxf->header_written)

  2354.         key = body_partition_key;

  2355. 

  2356.     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)

  2357.         return err;

  2358.     mxf_write_klv_fill(s);

  2359.     avio_write(pb, sc->track_essence_element_key, 16);

  2360.     klv_encode_ber9_length(pb, mxf->body_offset);

  2361.     return 0;

  2362. }

  2363. 

  2364. static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)

  2365. {

  2366.     MXFContext *mxf = s->priv_data;

  2367.     AVIOContext *pb = s->pb;

  2368. 

  2369.     int err;

  2370. 

  2371.     if (!mxf->header_written) {

  2372.         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  2373.             return err;

  2374.         mxf_write_klv_fill(s);

  2375. 

  2376.         if ((err = mxf_write_opatom_body_partition(s)) < 0)

  2377.             return err;

  2378.         mxf->header_written = 1;

  2379.     }

  2380. 

  2381.     if (!mxf->edit_unit_byte_count) {

  2382.         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2383.         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;

  2384.         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;

  2385.     }

  2386.     mxf->edit_units_count++;

  2387.     avio_write(pb, pkt->data, pkt->size);

  2388.     mxf->body_offset += pkt->size;

  2389.     avio_flush(pb);

  2390. 

  2391.     return 0;

  2392. }

  2393. 

  2394. static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)

  2395. {

  2396.     MXFContext *mxf = s->priv_data;

  2397.     AVIOContext *pb = s->pb;

  2398.     AVStream *st = s->streams[pkt->stream_index];

  2399.     MXFStreamContext *sc = st->priv_data;

  2400.     MXFIndexEntry ie = {0};

  2401.     int err;

  2402. 

  2403.     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {

  2404.         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count

  2405.                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {

  2406.             mxf->edit_units_count = 0;

  2407.             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");

  2408.             return err;

  2409.         }

  2410.     }

  2411. 

  2412.     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {

  2413.         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {

  2414.             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");

  2415.             return -1;

  2416.         }

  2417.     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {

  2418.         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {

  2419.             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");

  2420.             return -1;

  2421.         }

  2422.     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {

  2423.         if (!mxf_parse_dv_frame(s, st, pkt)) {

  2424.             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");

  2425.             return -1;

  2426.         }

  2427.     } else if (st->codec->codec_id == AV_CODEC_ID_H264) {

  2428.         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {

  2429.             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");

  2430.             return -1;

  2431.         }

  2432.     }

  2433. 

  2434.     if (s->oformat == &ff_mxf_opatom_muxer)

  2435.         return mxf_write_opatom_packet(s, pkt, &ie);

  2436. 

  2437.     if (!mxf->header_written) {

  2438.         if (mxf->edit_unit_byte_count) {

  2439.             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)

  2440.                 return err;

  2441.             mxf_write_klv_fill(s);

  2442.             mxf_write_index_table_segment(s);

  2443.         } else {

  2444.             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  2445.                 return err;

  2446.         }

  2447.         mxf->header_written = 1;

  2448.     }

  2449. 

  2450.     if (st->index == 0) {

  2451.         if (!mxf->edit_unit_byte_count &&

  2452.             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&

  2453.             !(ie.flags & 0x33)) { // I frame, Gop start

  2454.             mxf_write_klv_fill(s);

  2455.             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)

  2456.                 return err;

  2457.             mxf_write_klv_fill(s);

  2458.             mxf_write_index_table_segment(s);

  2459.         }

  2460. 

  2461.         mxf_write_klv_fill(s);

  2462.         mxf_write_system_item(s);

  2463. 

  2464.         if (!mxf->edit_unit_byte_count) {

  2465.             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2466.             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;

  2467.             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;

  2468.             mxf->body_offset += KAG_SIZE; // size of system element

  2469.         }

  2470.         mxf->edit_units_count++;

  2471.     } else if (!mxf->edit_unit_byte_count && st->index == 1) {

  2472.         if (!mxf->edit_units_count) {

  2473.             av_log(s, AV_LOG_ERROR, "No packets in first stream\n");

  2474.             return AVERROR_PATCHWELCOME;

  2475.         }

  2476.         mxf->index_entries[mxf->edit_units_count-1].slice_offset =

  2477.             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;

  2478.     }

  2479. 

  2480.     mxf_write_klv_fill(s);

  2481.     avio_write(pb, sc->track_essence_element_key, 16); // write key

  2482.     if (s->oformat == &ff_mxf_d10_muxer) {

  2483.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)

  2484.             mxf_write_d10_video_packet(s, st, pkt);

  2485.         else

  2486.             mxf_write_d10_audio_packet(s, st, pkt);

  2487.     } else {

  2488.         klv_encode_ber4_length(pb, pkt->size); // write length

  2489.         avio_write(pb, pkt->data, pkt->size);

  2490.         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);

  2491.     }

  2492. 

  2493.     avio_flush(pb);

  2494. 

  2495.     return 0;

  2496. }

  2497. 

  2498. static void mxf_write_random_index_pack(AVFormatContext *s)

  2499. {

  2500.     MXFContext *mxf = s->priv_data;

  2501.     AVIOContext *pb = s->pb;

  2502.     uint64_t pos = avio_tell(pb);

  2503.     int i;

  2504. 

  2505.     avio_write(pb, random_index_pack_key, 16);

  2506.     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);

  2507. 

  2508.     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)

  2509.         avio_wb32(pb, 1); // BodySID of header partition

  2510.     else

  2511.         avio_wb32(pb, 0);

  2512.     avio_wb64(pb, 0); // offset of header partition

  2513. 

  2514.     for (i = 0; i < mxf->body_partitions_count; i++) {

  2515.         avio_wb32(pb, 1); // BodySID

  2516.         avio_wb64(pb, mxf->body_partition_offset[i]);

  2517.     }

  2518. 

  2519.     avio_wb32(pb, 0); // BodySID of footer partition

  2520.     avio_wb64(pb, mxf->footer_partition_offset);

  2521. 

  2522.     avio_wb32(pb, avio_tell(pb) - pos + 4);

  2523. }

  2524. 

  2525. static int mxf_write_footer(AVFormatContext *s)

  2526. {

  2527.     MXFContext *mxf = s->priv_data;

  2528.     AVIOContext *pb = s->pb;

  2529.     int err = 0;

  2530. 

  2531.     if (!mxf->header_written ||

  2532.         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {

  2533.         /* reason could be invalid options/not supported codec/out of memory */

  2534.         err = AVERROR_UNKNOWN;

  2535.         goto end;

  2536.     }

  2537. 

  2538.     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  2539. 

  2540.     mxf_write_klv_fill(s);

  2541.     mxf->footer_partition_offset = avio_tell(pb);

  2542.     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index

  2543.         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)

  2544.             goto end;

  2545.     } else {

  2546.         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)

  2547.             goto end;

  2548.         mxf_write_klv_fill(s);

  2549.         mxf_write_index_table_segment(s);

  2550.     }

  2551. 

  2552.     mxf_write_klv_fill(s);

  2553.     mxf_write_random_index_pack(s);

  2554. 

  2555.     if (s->pb->seekable) {

  2556.         if (s->oformat == &ff_mxf_opatom_muxer){

  2557.             /* rewrite body partition to update lengths */

  2558.             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);

  2559.             if ((err = mxf_write_opatom_body_partition(s)) < 0)

  2560.                 goto end;

  2561.         }

  2562. 

  2563.         avio_seek(pb, 0, SEEK_SET);

  2564.         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {

  2565.             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)

  2566.                 goto end;

  2567.             mxf_write_klv_fill(s);

  2568.             mxf_write_index_table_segment(s);

  2569.         } else {

  2570.             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)

  2571.                 goto end;

  2572.         }

  2573.     }

  2574. 

  2575. end:

  2576.     ff_audio_interleave_close(s);

  2577. 

  2578.     av_freep(&mxf->index_entries);

  2579.     av_freep(&mxf->body_partition_offset);

  2580.     av_freep(&mxf->timecode_track->priv_data);

  2581.     av_freep(&mxf->timecode_track);

  2582. 

  2583.     mxf_free(s);

  2584. 

  2585.     return err < 0 ? err : 0;

  2586. }

  2587. 

  2588. static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2589. {

  2590.     int i, stream_count = 0;

  2591. 

  2592.     for (i = 0; i < s->nb_streams; i++)

  2593.         stream_count += !!s->streams[i]->last_in_packet_buffer;

  2594. 

  2595.     if (stream_count && (s->nb_streams == stream_count || flush)) {

  2596.         AVPacketList *pktl = s->internal->packet_buffer;

  2597.         if (s->nb_streams != stream_count) {

  2598.             AVPacketList *last = NULL;

  2599.             // find last packet in edit unit

  2600.             while (pktl) {

  2601.                 if (!stream_count || pktl->pkt.stream_index == 0)

  2602.                     break;

  2603.                 last = pktl;

  2604.                 pktl = pktl->next;

  2605.                 stream_count--;

  2606.             }

  2607.             // purge packet queue

  2608.             while (pktl) {

  2609.                 AVPacketList *next = pktl->next;

  2610. 

  2611.                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2612.                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2613.                 av_packet_unref(&pktl->pkt);

  2614.                 av_freep(&pktl);

  2615.                 pktl = next;

  2616.             }

  2617.             if (last)

  2618.                 last->next = NULL;

  2619.             else {

  2620.                 s->internal->packet_buffer = NULL;

  2621.                 s->internal->packet_buffer_end= NULL;

  2622.                 goto out;

  2623.             }

  2624.             pktl = s->internal->packet_buffer;

  2625.         }

  2626. 

  2627.         *out = pktl->pkt;

  2628.         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);

  2629.         s->internal->packet_buffer = pktl->next;

  2630.         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2631.             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2632.         if(!s->internal->packet_buffer)

  2633.             s->internal->packet_buffer_end= NULL;

  2634.         av_freep(&pktl);

  2635.         return 1;

  2636.     } else {

  2637.     out:

  2638.         av_init_packet(out);

  2639.         return 0;

  2640.     }

  2641. }

  2642. 

  2643. static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)

  2644. {

  2645.     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;

  2646.     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;

  2647. 

  2648.     return next->dts > pkt->dts ||

  2649.         (next->dts == pkt->dts && sc->order < sc2->order);

  2650. }

  2651. 

  2652. static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2653. {

  2654.     return ff_audio_rechunk_interleave(s, out, pkt, flush,

  2655.                                mxf_interleave_get_packet, mxf_compare_timestamps);

  2656. }

  2657. 

  2658. #define MXF_COMMON_OPTIONS \

  2659.     { "signal_standard", "Force/set Sigal Standard",\

  2660.       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2661.     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\

  2662.       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2663.     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\

  2664.       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2665.     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\

  2666.       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2667.     { "smpte274m", "SMPTE 274M (1125 line)",\

  2668.       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2669.     { "smpte296m", "SMPTE 296M (750 line progressive)",\

  2670.       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2671.     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\

  2672.       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2673.     { "smpte428", "SMPTE 428-1 DCDM",\

  2674.       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},

  2675. 

  2676. 

  2677. 

  2678. static const AVOption mxf_options[] = {

  2679.     MXF_COMMON_OPTIONS

  2680.     { "store_user_comments", "",

  2681.       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},

  2682.     { NULL },

  2683. };

  2684. 

  2685. static const AVClass mxf_muxer_class = {

  2686.     .class_name     = "MXF muxer",

  2687.     .item_name      = av_default_item_name,

  2688.     .option         = mxf_options,

  2689.     .version        = LIBAVUTIL_VERSION_INT,

  2690. };

  2691. 

  2692. static const AVOption d10_options[] = {

  2693.     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",

  2694.       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},

  2695.     MXF_COMMON_OPTIONS

  2696.     { "store_user_comments", "",

  2697.       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},

  2698.     { NULL },

  2699. };

  2700. 

  2701. static const AVClass mxf_d10_muxer_class = {

  2702.     .class_name     = "MXF-D10 muxer",

  2703.     .item_name      = av_default_item_name,

  2704.     .option         = d10_options,

  2705.     .version        = LIBAVUTIL_VERSION_INT,

  2706. };

  2707. 

  2708. static const AVOption opatom_options[] = {

  2709.     { "mxf_audio_edit_rate", "Audio edit rate for timecode",

  2710.         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },

  2711.     MXF_COMMON_OPTIONS

  2712.     { NULL },

  2713. };

  2714. 

  2715. static const AVClass mxf_opatom_muxer_class = {

  2716.     .class_name     = "MXF-OPAtom muxer",

  2717.     .item_name      = av_default_item_name,

  2718.     .option         = opatom_options,

  2719.     .version        = LIBAVUTIL_VERSION_INT,

  2720. };

  2721. 

  2722. AVOutputFormat ff_mxf_muxer = {

  2723.     .name              = "mxf",

  2724.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),

  2725.     .mime_type         = "application/mxf",

  2726.     .extensions        = "mxf",

  2727.     .priv_data_size    = sizeof(MXFContext),

  2728.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2729.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2730.     .write_header      = mxf_write_header,

  2731.     .write_packet      = mxf_write_packet,

  2732.     .write_trailer     = mxf_write_footer,

  2733.     .flags             = AVFMT_NOTIMESTAMPS,

  2734.     .interleave_packet = mxf_interleave,

  2735.     .priv_class        = &mxf_muxer_class,

  2736. };

  2737. 

  2738. AVOutputFormat ff_mxf_d10_muxer = {

  2739.     .name              = "mxf_d10",

  2740.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),

  2741.     .mime_type         = "application/mxf",

  2742.     .priv_data_size    = sizeof(MXFContext),

  2743.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2744.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2745.     .write_header      = mxf_write_header,

  2746.     .write_packet      = mxf_write_packet,

  2747.     .write_trailer     = mxf_write_footer,

  2748.     .flags             = AVFMT_NOTIMESTAMPS,

  2749.     .interleave_packet = mxf_interleave,

  2750.     .priv_class        = &mxf_d10_muxer_class,

  2751. };

  2752. 

  2753. AVOutputFormat ff_mxf_opatom_muxer = {

  2754.     .name              = "mxf_opatom",

  2755.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),

  2756.     .mime_type         = "application/mxf",

  2757.     .extensions        = "mxf",

  2758.     .priv_data_size    = sizeof(MXFContext),

  2759.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2760.     .video_codec       = AV_CODEC_ID_DNXHD,

  2761.     .write_header      = mxf_write_header,

  2762.     .write_packet      = mxf_write_packet,

  2763.     .write_trailer     = mxf_write_footer,

  2764.     .flags             = AVFMT_NOTIMESTAMPS,

  2765.     .interleave_packet = mxf_interleave,

  2766.     .priv_class        = &mxf_opatom_muxer_class,

  2767. };