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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.  * References

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

  26.  * SMPTE 377M MXF File Format Specifications

  27.  * SMPTE 379M MXF Generic Container

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

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

  30.  * SMPTE RP210: SMPTE Metadata Dictionary

  31.  * SMPTE RP224: Registry of SMPTE Universal Labels

  32.  */

  33. 

  34. #include <inttypes.h>

  35. #include <math.h>

  36. #include <time.h>

  37. 

  38. #include "libavutil/opt.h"

  39. #include "libavutil/random_seed.h"

  40. #include "libavutil/timecode.h"

  41. #include "libavutil/avassert.h"

  42. #include "libavutil/pixdesc.h"

  43. #include "libavutil/time_internal.h"

  44. #include "libavcodec/bytestream.h"

  45. #include "libavcodec/dnxhddata.h"

  46. #include "libavcodec/h264.h"

  47. #include "libavcodec/internal.h"

  48. #include "audiointerleave.h"

  49. #include "avformat.h"

  50. #include "avio_internal.h"

  51. #include "internal.h"

  52. #include "mxf.h"

  53. #include "config.h"

  54. 

  55. extern AVOutputFormat ff_mxf_d10_muxer;

  56. extern AVOutputFormat ff_mxf_opatom_muxer;

  57. 

  58. #define EDIT_UNITS_PER_BODY 250

  59. #define KAG_SIZE 512

  60. 

  61. typedef struct MXFLocalTagPair {

  62.     int local_tag;

  63.     UID uid;

  64. } MXFLocalTagPair;

  65. 

  66. typedef struct MXFIndexEntry {

  67.     uint8_t flags;

  68.     uint64_t offset;

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

  70.     uint16_t temporal_ref;

  71. } MXFIndexEntry;

  72. 

  73. typedef struct MXFStreamContext {

  74.     AudioInterleaveContext aic;

  75.     UID track_essence_element_key;

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

  77.     const UID *codec_ul;

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

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

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

  81.     int component_depth;

  82.     int color_siting;

  83.     int signal_standard;

  84.     int h_chroma_sub_sample;

  85.     int temporal_reordering;

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

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

  88.     int video_bit_rate;

  89. } MXFStreamContext;

  90. 

  91. typedef struct MXFContainerEssenceEntry {

  92.     UID container_ul;

  93.     UID element_ul;

  94.     UID codec_ul;

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

  96. } MXFContainerEssenceEntry;

  97. 

  98. static const struct {

  99.     enum AVCodecID id;

  100.     int index;

  101. } mxf_essence_mappings[] = {

  102.     { AV_CODEC_ID_MPEG2VIDEO, 0 },

  103.     { AV_CODEC_ID_PCM_S24LE,  1 },

  104.     { AV_CODEC_ID_PCM_S16LE,  1 },

  105.     { AV_CODEC_ID_DVVIDEO,   15 },

  106.     { AV_CODEC_ID_DNXHD,     24 },

  107.     { AV_CODEC_ID_JPEG2000,  34 },

  108.     { AV_CODEC_ID_H264,      35 },

  109.     { AV_CODEC_ID_NONE }

  110. };

  111. 

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

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

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

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

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

  117. 

  118. static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {

  119.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },

  120.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  121.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  122.       mxf_write_mpegvideo_desc },

  123.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },

  124.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },

  125.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  126.       mxf_write_aes3_desc },

  127.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },

  128.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },

  129.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  130.       mxf_write_wav_desc },

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

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

  133.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  135.       mxf_write_cdci_desc },

  136.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },

  137.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  138.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  139.       mxf_write_generic_sound_desc },

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

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

  142.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  144.       mxf_write_cdci_desc },

  145.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },

  146.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  147.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  148.       mxf_write_generic_sound_desc },

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

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

  151.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  152.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },

  153.       mxf_write_cdci_desc },

  154.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },

  155.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  156.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  157.       mxf_write_generic_sound_desc },

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

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

  160.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  162.       mxf_write_cdci_desc },

  163.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },

  164.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  165.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  166.       mxf_write_generic_sound_desc },

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

  168.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },

  169.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  170.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },

  171.       mxf_write_cdci_desc },

  172.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },

  173.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  174.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  175.       mxf_write_generic_sound_desc },

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

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

  178.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  180.       mxf_write_cdci_desc },

  181.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },

  182.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  183.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  184.       mxf_write_generic_sound_desc },

  185.     // DV Unknown

  186.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },

  187.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

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

  189.       mxf_write_cdci_desc },

  190.     // DV25 525/60

  191.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },

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

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

  194.       mxf_write_cdci_desc },

  195.     // DV25 625/50

  196.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },

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

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

  199.       mxf_write_cdci_desc },

  200.     // DV50 525/60

  201.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },

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

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

  204.       mxf_write_cdci_desc },

  205.     // DV50 625/50

  206.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },

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

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

  209.       mxf_write_cdci_desc },

  210.     // DV100 1080/60

  211.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },

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

  213.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },

  214.       mxf_write_cdci_desc },

  215.     // DV100 1080/50

  216.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },

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

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

  219.       mxf_write_cdci_desc },

  220.     // DV100 720/60

  221.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },

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

  223.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },

  224.       mxf_write_cdci_desc },

  225.     // DV100 720/50

  226.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },

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

  228.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },

  229.       mxf_write_cdci_desc },

  230.     // DNxHD 1080p 10bit high

  231.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  232.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  233.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },

  234.       mxf_write_cdci_desc },

  235.     // DNxHD 1080p 8bit medium

  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,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },

  239.       mxf_write_cdci_desc },

  240.     // DNxHD 1080p 8bit high

  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,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },

  244.       mxf_write_cdci_desc },

  245.     // DNxHD 1080i 10bit 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,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },

  249.       mxf_write_cdci_desc },

  250.     // DNxHD 1080i 8bit medium

  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,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },

  254.       mxf_write_cdci_desc },

  255.     // DNxHD 1080i 8bit high

  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,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },

  259.       mxf_write_cdci_desc },

  260.     // DNxHD 720p 10bit

  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,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },

  264.       mxf_write_cdci_desc },

  265.     // DNxHD 720p 8bit high

  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,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },

  269.       mxf_write_cdci_desc },

  270.     // DNxHD 720p 8bit medium

  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,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },

  274.       mxf_write_cdci_desc },

  275.     // DNxHD 720p 8bit low

  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,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },

  279.       mxf_write_cdci_desc },

  280.     // JPEG2000

  281.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },

  282.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },

  283.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },

  284.       mxf_write_cdci_desc },

  285.     // H.264

  286.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },

  287.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  288.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  289.       mxf_write_mpegvideo_desc },

  290.     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  291.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  292.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  293.       NULL },

  294. };

  295. 

  296. typedef struct MXFContext {

  297.     AVClass *av_class;

  298.     int64_t footer_partition_offset;

  299.     int essence_container_count;

  300.     AVRational time_base;

  301.     int header_written;

  302.     MXFIndexEntry *index_entries;

  303.     unsigned edit_units_count;

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

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

  306.     int last_indexed_edit_unit;

  307.     uint64_t *body_partition_offset;

  308.     unsigned body_partitions_count;

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

  310.     uint64_t duration;

  311.     AVTimecode tc;       ///< timecode context

  312.     AVStream *timecode_track;

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

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

  315.     uint64_t body_offset;

  316.     uint32_t instance_number;

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

  318.     int channel_count;

  319.     int signal_standard;

  320.     uint32_t tagged_value_count;

  321.     AVRational audio_edit_rate;

  322. } MXFContext;

  323. 

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

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

  326. 

  327. /**

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

  329.  */

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

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

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

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

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

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

  336. 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

  337. 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

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

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

  340. 

  341. /**

  342.  * partial key for header metadata

  343.  */

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

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

  346. 

  347. /**

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

  349.  */

  350. static const MXFLocalTagPair mxf_local_tag_batch[] = {

  351.     // preface set

  352.     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */

  353.     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */

  354.     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */

  355.     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */

  356.     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */

  357.     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */

  358.     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */

  359.     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */

  360.     // Identification

  361.     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */

  362.     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */

  363.     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */

  364.     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */

  365.     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */

  366.     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */

  367.     // Content Storage

  368.     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */

  369.     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */

  370.     // Essence Container Data

  371.     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */

  372.     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */

  373.     // Package

  374.     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */

  375.     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */

  376.     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */

  377.     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */

  378.     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */

  379.     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */

  380.     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */

  381.     // Track

  382.     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */

  383.     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */

  384.     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */

  385.     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */

  386.     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */

  387.     // Sequence

  388.     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */

  389.     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */

  390.     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */

  391.     // Source Clip

  392.     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */

  393.     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */

  394.     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */

  395.     // Timecode Component

  396.     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */

  397.     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */

  398.     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */

  399.     // Tagged Value

  400.     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */

  401.     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */

  402.     // File Descriptor

  403.     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */

  404.     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */

  405.     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */

  406.     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */

  407.     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */

  408.     // Generic Picture Essence Descriptor

  409.     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */

  410.     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */

  411.     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */

  412.     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */

  413.     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */

  414.     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */

  415.     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */

  416.     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */

  417.     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */

  418.     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */

  419.     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */

  420.     // CDCI Picture Essence Descriptor

  421.     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */

  422.     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */

  423.     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */

  424.     // Generic Sound Essence Descriptor

  425.     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */

  426.     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */

  427.     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */

  428.     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */

  429.     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */

  430.     // Index Table Segment

  431.     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */

  432.     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */

  433.     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */

  434.     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */

  435.     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */

  436.     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */

  437.     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */

  438.     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */

  439.     // MPEG video Descriptor

  440.     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */

  441.     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */

  442.     // Wave Audio Essence Descriptor

  443.     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */

  444.     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */

  445. };

  446. 

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

  448. {

  449.     avio_write(pb, uuid_base, 12);

  450.     avio_wb16(pb, type);

  451.     avio_wb16(pb, value);

  452. }

  453. 

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

  455. {

  456.     MXFContext *mxf = s->priv_data;

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

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

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

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

  461. }

  462. 

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

  464. {

  465.     avio_wb32(pb, ref_count);

  466.     avio_wb32(pb, 16);

  467. }

  468. 

  469. static int klv_ber_length(uint64_t len)

  470. {

  471.     if (len < 128)

  472.         return 1;

  473.     else

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

  475. }

  476. 

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

  478. {

  479.     // Determine the best BER size

  480.     int size;

  481.     if (len < 128) {

  482.         //short form

  483.         avio_w8(pb, len);

  484.         return 1;

  485.     }

  486. 

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

  488. 

  489.     // long form

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

  491.     while(size) {

  492.         size--;

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

  494.     }

  495.     return 0;

  496. }

  497. 

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

  499. {

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

  501.     avio_wb24(pb, len);

  502. }

  503. 

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

  505. {

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

  507.     avio_wb64(pb, len);

  508. }

  509. 

  510. /*

  511.  * Get essence container ul index

  512.  */

  513. static int mxf_get_essence_container_ul_index(enum AVCodecID id)

  514. {

  515.     int i;

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

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

  518.             return mxf_essence_mappings[i].index;

  519.     return -1;

  520. }

  521. 

  522. static void mxf_write_primer_pack(AVFormatContext *s)

  523. {

  524.     AVIOContext *pb = s->pb;

  525.     int local_tag_number, i = 0;

  526. 

  527.     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);

  528. 

  529.     avio_write(pb, primer_pack_key, 16);

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

  531. 

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

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

  534. 

  535.     for (i = 0; i < local_tag_number; i++) {

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

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

  538.     }

  539. }

  540. 

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

  542. {

  543.     avio_wb16(pb, tag);

  544.     avio_wb16(pb, size);

  545. }

  546. 

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

  548. {

  549.     avio_write(pb, header_metadata_key, 13);

  550.     avio_wb24(pb, value);

  551. }

  552. 

  553. static void mxf_free(AVFormatContext *s)

  554. {

  555.     int i;

  556. 

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

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

  559.         av_freep(&st->priv_data);

  560.     }

  561. }

  562. 

  563. static const MXFCodecUL *mxf_get_data_definition_ul(int type)

  564. {

  565.     const MXFCodecUL *uls = ff_mxf_data_definition_uls;

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

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

  568.             break;

  569.         uls++;

  570.     }

  571.     return uls;

  572. }

  573. 

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

  575. #define DESCRIPTOR_COUNT(essence_container_count) \

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

  577. 

  578. static void mxf_write_essence_container_refs(AVFormatContext *s)

  579. {

  580.     MXFContext *c = s->priv_data;

  581.     AVIOContext *pb = s->pb;

  582.     int i;

  583. 

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

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

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

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

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

  589.     }

  590. 

  591.     if (c->essence_container_count > 1)

  592.         avio_write(pb, multiple_desc_ul, 16);

  593. }

  594. 

  595. static void mxf_write_preface(AVFormatContext *s)

  596. {

  597.     MXFContext *mxf = s->priv_data;

  598.     AVIOContext *pb = s->pb;

  599. 

  600.     mxf_write_metadata_key(pb, 0x012f00);

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

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

  603. 

  604.     // write preface set uid

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

  606.     mxf_write_uuid(pb, Preface, 0);

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

  608. 

  609.     // last modified date

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

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

  612. 

  613.     // write version

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

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

  616. 

  617.     // write identification_refs

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

  619.     mxf_write_refs_count(pb, 1);

  620.     mxf_write_uuid(pb, Identification, 0);

  621. 

  622.     // write content_storage_refs

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

  624.     mxf_write_uuid(pb, ContentStorage, 0);

  625. 

  626.     // operational pattern

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

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

  629.         avio_write(pb, opatom_ul, 16);

  630.     else

  631.         avio_write(pb, op1a_ul, 16);

  632. 

  633.     // write essence_container_refs

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

  635.     mxf_write_essence_container_refs(s);

  636. 

  637.     // write dm_scheme_refs

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

  639.     avio_wb64(pb, 0);

  640. }

  641. 

  642. /*

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

  644.  * from decoding the utf-8 string.

  645.  */

  646. static uint64_t mxf_utf16len(const char *utf8_str)

  647. {

  648.     const uint8_t *q = utf8_str;

  649.     uint64_t size = 0;

  650.     while (*q) {

  651.         uint32_t ch;

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

  653.         if (ch < 0x10000)

  654.             size++;

  655.         else

  656.             size += 2;

  657.         continue;

  658. invalid:

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

  660.     }

  661.     size += 1;

  662.     return size;

  663. }

  664. 

  665. /*

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

  667.  */

  668. static int mxf_utf16_local_tag_length(const char *utf8_str)

  669. {

  670.     uint64_t size;

  671. 

  672.     if (!utf8_str)

  673.         return 0;

  674. 

  675.     size = mxf_utf16len(utf8_str);

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

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

  678.         return 0;

  679.     }

  680. 

  681.     return 4 + size * 2;

  682. }

  683. 

  684. /*

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

  686.  */

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

  688. {

  689.     uint64_t size = mxf_utf16len(value);

  690. 

  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;

  694.     }

  695. 

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

  697.     avio_put_str16be(pb, value);

  698. }

  699. 

  700. static void mxf_write_identification(AVFormatContext *s)

  701. {

  702.     MXFContext *mxf = s->priv_data;

  703.     AVIOContext *pb = s->pb;

  704.     const char *company = "FFmpeg";

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

  706.     const char *version;

  707.     int length;

  708. 

  709.     mxf_write_metadata_key(pb, 0x013000);

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

  711. 

  712.     version = s->flags & AVFMT_FLAG_BITEXACT ?

  713.         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);

  714.     length = 72 + mxf_utf16_local_tag_length(company) +

  715.                   mxf_utf16_local_tag_length(product) +

  716.                   mxf_utf16_local_tag_length(version);

  717.     klv_encode_ber_length(pb, length);

  718. 

  719.     // write uid

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

  721.     mxf_write_uuid(pb, Identification, 0);

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

  723. 

  724.     // write generation uid

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

  726.     mxf_write_uuid(pb, Identification, 1);

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

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

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

  730. 

  731.     // write product uid

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

  733.     mxf_write_uuid(pb, Identification, 2);

  734. 

  735.     // modification date

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

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

  738. }

  739. 

  740. static void mxf_write_content_storage(AVFormatContext *s)

  741. {

  742.     AVIOContext *pb = s->pb;

  743. 

  744.     mxf_write_metadata_key(pb, 0x011800);

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

  746.     klv_encode_ber_length(pb, 92);

  747. 

  748.     // write uid

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

  750.     mxf_write_uuid(pb, ContentStorage, 0);

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

  752. 

  753.     // write package reference

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

  755.     mxf_write_refs_count(pb, 2);

  756.     mxf_write_uuid(pb, MaterialPackage, 0);

  757.     mxf_write_uuid(pb, SourcePackage, 0);

  758. 

  759.     // write essence container data

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

  761.     mxf_write_refs_count(pb, 1);

  762.     mxf_write_uuid(pb, EssenceContainerData, 0);

  763. }

  764. 

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

  766. {

  767.     MXFContext *mxf = s->priv_data;

  768.     AVIOContext *pb = s->pb;

  769.     MXFStreamContext *sc = st->priv_data;

  770. 

  771.     mxf_write_metadata_key(pb, 0x013b00);

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

  773.     klv_encode_ber_length(pb, 80);

  774. 

  775.     // write track uid

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

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

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

  779. 

  780.     // write track id

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

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

  783. 

  784.     // write track number

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

  786.     if (type == MaterialPackage)

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

  788.     else

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

  790. 

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

  792. 

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

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

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

  796.     } else {

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

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

  799.     }

  800. 

  801.     // write origin

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

  803.     avio_wb64(pb, 0);

  804. 

  805.     // write sequence refs

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

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

  808. }

  809. 

  810. 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 };

  811. 

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

  813. {

  814.     MXFContext *mxf = s->priv_data;

  815.     AVIOContext *pb = s->pb;

  816. 

  817.     // find data define uls

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

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

  820.         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);

  821.     else {

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

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

  824.     }

  825. 

  826.     // write duration

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

  828. 

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

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

  831.     } else {

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

  833.     }

  834. }

  835. 

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

  837. {

  838.     MXFContext *mxf = s->priv_data;

  839.     AVIOContext *pb = s->pb;

  840.     enum MXFMetadataSetType component;

  841. 

  842.     mxf_write_metadata_key(pb, 0x010f00);

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

  844.     klv_encode_ber_length(pb, 80);

  845. 

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

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

  848. 

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

  850.     mxf_write_common_fields(s, st);

  851. 

  852.     // write structural component

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

  854.     mxf_write_refs_count(pb, 1);

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

  856.         component = TimecodeComponent;

  857.     else

  858.         component = SourceClip;

  859.     if (type == SourcePackage)

  860.         component += TypeBottom;

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

  862. }

  863. 

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

  865. {

  866.     MXFContext *mxf = s->priv_data;

  867.     AVIOContext *pb = s->pb;

  868. 

  869.     mxf_write_metadata_key(pb, 0x011400);

  870.     klv_encode_ber_length(pb, 75);

  871. 

  872.     // UID

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

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

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

  876. 

  877.     mxf_write_common_fields(s, st);

  878. 

  879.     // Start Time Code

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

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

  882. 

  883.     // Rounded Time Code Base

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

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

  886. 

  887.     // Drop Frame

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

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

  890. }

  891. 

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

  893. {

  894.     AVIOContext *pb = s->pb;

  895.     int i;

  896. 

  897.     mxf_write_metadata_key(pb, 0x011100);

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

  899.     klv_encode_ber_length(pb, 108);

  900. 

  901.     // write uid

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

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

  904. 

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

  906.     mxf_write_common_fields(s, st);

  907. 

  908.     // write start_position

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

  910.     avio_wb64(pb, 0);

  911. 

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

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

  914.     if (type == SourcePackage) {

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

  916.             avio_wb64(pb, 0);

  917.     } else

  918.         mxf_write_umid(s, 1);

  919. 

  920.     // write source track id

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

  922.     if (type == SourcePackage)

  923.         avio_wb32(pb, 0);

  924.     else

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

  926. }

  927. 

  928. static void mxf_write_multi_descriptor(AVFormatContext *s)

  929. {

  930.     MXFContext *mxf = s->priv_data;

  931.     AVIOContext *pb = s->pb;

  932.     const uint8_t *ul;

  933.     int i;

  934. 

  935.     mxf_write_metadata_key(pb, 0x014400);

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

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

  938. 

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

  940.     mxf_write_uuid(pb, MultipleDescriptor, 0);

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

  942. 

  943.     // write sample rate

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

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

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

  947. 

  948.     // write essence container ul

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

  950.     if (mxf->essence_container_count > 1)

  951.         ul = multiple_desc_ul;

  952.     else {

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

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

  955.     }

  956.     avio_write(pb, ul, 16);

  957. 

  958.     // write sub descriptor refs

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

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

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

  962.         mxf_write_uuid(pb, SubDescriptor, i);

  963. }

  964. 

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

  966. {

  967.     MXFContext *mxf = s->priv_data;

  968.     MXFStreamContext *sc = st->priv_data;

  969.     AVIOContext *pb = s->pb;

  970. 

  971.     avio_write(pb, key, 16);

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

  973. 

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

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

  976. 

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

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

  979. 

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

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

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

  983. 

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

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

  986. }

  987. 

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

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

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

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

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

  993. 

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

  995. {

  996.     MXFStreamContext *sc = st->priv_data;

  997.     AVIOContext *pb = s->pb;

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

  999.     int display_height;

  1000.     int f1, f2;

  1001.     unsigned desc_size = size+8+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20+5;

  1002.     if (sc->interlaced && sc->field_dominance)

  1003.         desc_size += 5;

  1004.     if (sc->signal_standard)

  1005.         desc_size += 5;

  1006. 

  1007.     mxf_write_generic_desc(s, st, key, desc_size);

  1008. 

  1009.     mxf_write_local_tag(pb, 4, 0x3203);

  1010.     avio_wb32(pb, st->codec->width);

  1011. 

  1012.     mxf_write_local_tag(pb, 4, 0x3202);

  1013.     avio_wb32(pb, stored_height>>sc->interlaced);

  1014. 

  1015.     mxf_write_local_tag(pb, 4, 0x3209);

  1016.     avio_wb32(pb, st->codec->width);

  1017. 

  1018.     if (st->codec->height == 608) // PAL + VBI

  1019.         display_height = 576;

  1020.     else if (st->codec->height == 512)  // NTSC + VBI

  1021.         display_height = 486;

  1022.     else

  1023.         display_height = st->codec->height;

  1024. 

  1025.     mxf_write_local_tag(pb, 4, 0x3208);

  1026.     avio_wb32(pb, display_height>>sc->interlaced);

  1027. 

  1028.     // presentation Y offset

  1029.     mxf_write_local_tag(pb, 4, 0x320B);

  1030.     avio_wb32(pb, (st->codec->height - display_height)>>sc->interlaced);

  1031. 

  1032.     // component depth

  1033.     mxf_write_local_tag(pb, 4, 0x3301);

  1034.     avio_wb32(pb, sc->component_depth);

  1035. 

  1036.     // horizontal subsampling

  1037.     mxf_write_local_tag(pb, 4, 0x3302);

  1038.     avio_wb32(pb, sc->h_chroma_sub_sample);

  1039. 

  1040.     // color siting

  1041.     mxf_write_local_tag(pb, 1, 0x3303);

  1042.     avio_w8(pb, sc->color_siting);

  1043. 

  1044.     if (sc->signal_standard) {

  1045.         mxf_write_local_tag(pb, 1, 0x3215);

  1046.         avio_w8(pb, sc->signal_standard);

  1047.     }

  1048. 

  1049.     // frame layout

  1050.     mxf_write_local_tag(pb, 1, 0x320C);

  1051.     avio_w8(pb, sc->interlaced);

  1052. 

  1053.     // video line map

  1054.     switch (st->codec->height) {

  1055.     case  576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;

  1056.     case  608: f1 =  7; f2 = 320; break;

  1057.     case  480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;

  1058.     case  512: f1 =  7; f2 = 270; break;

  1059.     case  720: f1 = 26; f2 =   0; break; // progressive

  1060.     case 1080: f1 = 21; f2 = 584; break;

  1061.     default:   f1 =  0; f2 =   0; break;

  1062.     }

  1063. 

  1064.     if (!sc->interlaced) {

  1065.         f2  = 0;

  1066.         f1 *= 2;

  1067.     }

  1068. 

  1069.     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);

  1070.     avio_wb32(pb, sc->interlaced ? 2 : 1);

  1071.     avio_wb32(pb, 4);

  1072.     avio_wb32(pb, f1);

  1073.     if (sc->interlaced)

  1074.         avio_wb32(pb, f2);

  1075. 

  1076.     mxf_write_local_tag(pb, 8, 0x320E);

  1077.     avio_wb32(pb, sc->aspect_ratio.num);

  1078.     avio_wb32(pb, sc->aspect_ratio.den);

  1079. 

  1080.     mxf_write_local_tag(pb, 16, 0x3201);

  1081.     avio_write(pb, *sc->codec_ul, 16);

  1082. 

  1083.     if (sc->interlaced && sc->field_dominance) {

  1084.         mxf_write_local_tag(pb, 1, 0x3212);

  1085.         avio_w8(pb, sc->field_dominance);

  1086.     }

  1087. 

  1088. }

  1089. 

  1090. static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)

  1091. {

  1092.     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);

  1093. }

  1094. 

  1095. static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)

  1096. {

  1097.     AVIOContext *pb = s->pb;

  1098.     MXFStreamContext *sc = st->priv_data;

  1099.     int profile_and_level = (st->codec->profile<<4) | st->codec->level;

  1100. 

  1101.     if (st->codec->codec_id != AV_CODEC_ID_H264) {

  1102.         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);

  1103. 

  1104.         // bit rate

  1105.         mxf_write_local_tag(pb, 4, 0x8000);

  1106.         avio_wb32(pb, sc->video_bit_rate);

  1107. 

  1108.         // profile and level

  1109.         mxf_write_local_tag(pb, 1, 0x8007);

  1110.         if (!st->codec->profile)

  1111.             profile_and_level |= 0x80; // escape bit

  1112.         avio_w8(pb, profile_and_level);

  1113.     } else {

  1114.         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);

  1115.     }

  1116. }

  1117. 

  1118. static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1119. {

  1120.     AVIOContext *pb = s->pb;

  1121.     MXFContext *mxf = s->priv_data;

  1122.     int show_warnings = !mxf->footer_partition_offset;

  1123.     int duration_size = 0;

  1124. 

  1125.     if (s->oformat == &ff_mxf_opatom_muxer)

  1126.         duration_size = 12;

  1127. 

  1128.     mxf_write_generic_desc(s, st, key, size+duration_size+5+12+8+8);

  1129. 

  1130.     if (duration_size > 0){

  1131.         mxf_write_local_tag(pb, 8, 0x3002);

  1132.         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);

  1133.     }

  1134. 

  1135.     // audio locked

  1136.     mxf_write_local_tag(pb, 1, 0x3D02);

  1137.     avio_w8(pb, 1);

  1138. 

  1139.     // write audio sampling rate

  1140.     mxf_write_local_tag(pb, 8, 0x3D03);

  1141.     avio_wb32(pb, st->codec->sample_rate);

  1142.     avio_wb32(pb, 1);

  1143. 

  1144.     mxf_write_local_tag(pb, 4, 0x3D07);

  1145.     if (mxf->channel_count == -1) {

  1146.         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))

  1147.             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");

  1148.         avio_wb32(pb, st->codec->channels);

  1149.     } else if (s->oformat == &ff_mxf_d10_muxer) {

  1150.         if (show_warnings && (mxf->channel_count < st->codec->channels))

  1151.             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");

  1152.         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))

  1153.             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");

  1154.         avio_wb32(pb, mxf->channel_count);

  1155.     } else {

  1156.         if (show_warnings && mxf->channel_count != -1 && s->oformat != &ff_mxf_opatom_muxer)

  1157.             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");

  1158.         avio_wb32(pb, st->codec->channels);

  1159.     }

  1160. 

  1161.     mxf_write_local_tag(pb, 4, 0x3D01);

  1162.     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));

  1163. }

  1164. 

  1165. static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1166. {

  1167.     AVIOContext *pb = s->pb;

  1168. 

  1169.     mxf_write_generic_sound_common(s, st, key, size+6+8);

  1170. 

  1171.     mxf_write_local_tag(pb, 2, 0x3D0A);

  1172.     avio_wb16(pb, st->codec->block_align);

  1173. 

  1174.     // avg bytes per sec

  1175.     mxf_write_local_tag(pb, 4, 0x3D09);

  1176.     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);

  1177. }

  1178. 

  1179. static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)

  1180. {

  1181.     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);

  1182. }

  1183. 

  1184. static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)

  1185. {

  1186.     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);

  1187. }

  1188. 

  1189. static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)

  1190. {

  1191.     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);

  1192. }

  1193. 

  1194. 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 };

  1195. 

  1196. static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)

  1197. {

  1198.     MXFContext *mxf = s->priv_data;

  1199.     AVIOContext *pb = s->pb;

  1200.     int name_size = mxf_utf16_local_tag_length(name);

  1201.     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);

  1202. 

  1203.     if (!name_size || indirect_value_size == 13)

  1204.         return 1;

  1205. 

  1206.     mxf_write_metadata_key(pb, 0x013f00);

  1207.     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);

  1208. 

  1209.     // write instance UID

  1210.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1211.     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);

  1212. 

  1213.     // write name

  1214.     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name

  1215. 

  1216.     // write indirect value

  1217.     mxf_write_local_tag(pb, indirect_value_size, 0x5003);

  1218.     avio_write(pb, mxf_indirect_value_utf16le, 17);

  1219.     avio_put_str16le(pb, value);

  1220. 

  1221.     mxf->tagged_value_count++;

  1222.     return 0;

  1223. }

  1224. 

  1225. static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)

  1226. {

  1227.     MXFContext *mxf = s->priv_data;

  1228.     AVDictionaryEntry *t = NULL;

  1229.     int count = 0;

  1230. 

  1231.     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {

  1232.         if (mxf->tagged_value_count >= UINT16_MAX) {

  1233.             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");

  1234.             return count;

  1235.         }

  1236. 

  1237.         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)

  1238.             count++;

  1239.     }

  1240.     return count;

  1241. }

  1242. 

  1243. static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type, const char *package_name)

  1244. {

  1245.     MXFContext *mxf = s->priv_data;

  1246.     AVIOContext *pb = s->pb;

  1247.     int i, track_count = s->nb_streams+1;

  1248.     int name_size = mxf_utf16_local_tag_length(package_name);

  1249.     int user_comment_count = 0;

  1250. 

  1251.     if (type == MaterialPackage) {

  1252.         user_comment_count = mxf_write_user_comments(s, s->metadata);

  1253.         mxf_write_metadata_key(pb, 0x013600);

  1254.         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);

  1255.         klv_encode_ber_length(pb, 104 + name_size + (16*track_count) + (16*user_comment_count));

  1256.     } else {

  1257.         mxf_write_metadata_key(pb, 0x013700);

  1258.         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);

  1259.         klv_encode_ber_length(pb, 124 + name_size + (16*track_count)); // 20 bytes length for descriptor reference

  1260.     }

  1261. 

  1262.     // write uid

  1263.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1264.     mxf_write_uuid(pb, type, 0);

  1265.     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);

  1266.     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);

  1267. 

  1268.     // write package umid

  1269.     mxf_write_local_tag(pb, 32, 0x4401);

  1270.     mxf_write_umid(s, type == SourcePackage);

  1271.     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);

  1272. 

  1273.     // package name

  1274.     if (name_size)

  1275.         mxf_write_local_tag_utf16(pb, 0x4402, package_name);

  1276. 

  1277.     // package creation date

  1278.     mxf_write_local_tag(pb, 8, 0x4405);

  1279.     avio_wb64(pb, mxf->timestamp);

  1280. 

  1281.     // package modified date

  1282.     mxf_write_local_tag(pb, 8, 0x4404);

  1283.     avio_wb64(pb, mxf->timestamp);

  1284. 

  1285.     // write track refs

  1286.     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);

  1287.     mxf_write_refs_count(pb, track_count);

  1288.     mxf_write_uuid(pb, type == MaterialPackage ? Track :

  1289.                    Track + TypeBottom, -1); // timecode track

  1290.     for (i = 0; i < s->nb_streams; i++)

  1291.         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);

  1292. 

  1293.     // write user comment refs

  1294.     mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);

  1295.     mxf_write_refs_count(pb, user_comment_count);

  1296.     for (i = 0; i < user_comment_count; i++)

  1297.          mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);

  1298. 

  1299.     // write multiple descriptor reference

  1300.     if (type == SourcePackage) {

  1301.         mxf_write_local_tag(pb, 16, 0x4701);

  1302.         if (s->nb_streams > 1) {

  1303.             mxf_write_uuid(pb, MultipleDescriptor, 0);

  1304.             mxf_write_multi_descriptor(s);

  1305.         } else

  1306.             mxf_write_uuid(pb, SubDescriptor, 0);

  1307.     }

  1308. 

  1309.     // write timecode track

  1310.     mxf_write_track(s, mxf->timecode_track, type);

  1311.     mxf_write_sequence(s, mxf->timecode_track, type);

  1312.     mxf_write_timecode_component(s, mxf->timecode_track, type);

  1313. 

  1314.     for (i = 0; i < s->nb_streams; i++) {

  1315.         AVStream *st = s->streams[i];

  1316.         mxf_write_track(s, st, type);

  1317.         mxf_write_sequence(s, st, type);

  1318.         mxf_write_structural_component(s, st, type);

  1319. 

  1320.         if (type == SourcePackage) {

  1321.             MXFStreamContext *sc = st->priv_data;

  1322.             mxf_essence_container_uls[sc->index].write_desc(s, st);

  1323.         }

  1324.     }

  1325. }

  1326. 

  1327. static int mxf_write_essence_container_data(AVFormatContext *s)

  1328. {

  1329.     AVIOContext *pb = s->pb;

  1330. 

  1331.     mxf_write_metadata_key(pb, 0x012300);

  1332.     klv_encode_ber_length(pb, 72);

  1333. 

  1334.     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID

  1335.     mxf_write_uuid(pb, EssenceContainerData, 0);

  1336. 

  1337.     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID

  1338.     mxf_write_umid(s, 1);

  1339. 

  1340.     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID

  1341.     avio_wb32(pb, 1);

  1342. 

  1343.     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID

  1344.     avio_wb32(pb, 2);

  1345. 

  1346.     return 0;

  1347. }

  1348. 

  1349. static int mxf_write_header_metadata_sets(AVFormatContext *s)

  1350. {

  1351.     const char *material_package_name = NULL;

  1352.     const char *file_package_name = NULL;

  1353.     AVDictionaryEntry *entry = NULL;

  1354.     AVStream *st = NULL;

  1355.     int i;

  1356. 

  1357.     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))

  1358.        material_package_name = entry->value;

  1359. 

  1360.     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {

  1361.         file_package_name = entry->value;

  1362.     } else {

  1363.         /* check if any of the streams contain a file_package_name */

  1364.         for (i = 0; i < s->nb_streams; i++) {

  1365.             st = s->streams[i];

  1366.             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {

  1367.                 file_package_name = entry->value;

  1368.                 break;

  1369.             }

  1370.         }

  1371.     }

  1372. 

  1373.     mxf_write_preface(s);

  1374.     mxf_write_identification(s);

  1375.     mxf_write_content_storage(s);

  1376.     mxf_write_package(s, MaterialPackage, material_package_name);

  1377.     mxf_write_package(s, SourcePackage, file_package_name);

  1378.     mxf_write_essence_container_data(s);

  1379.     return 0;

  1380. }

  1381. 

  1382. static unsigned klv_fill_size(uint64_t size)

  1383. {

  1384.     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));

  1385.     if (pad < 20) // smallest fill item possible

  1386.         return pad + KAG_SIZE;

  1387.     else

  1388.         return pad & (KAG_SIZE-1);

  1389. }

  1390. 

  1391. static void mxf_write_index_table_segment(AVFormatContext *s)

  1392. {

  1393.     MXFContext *mxf = s->priv_data;

  1394.     AVIOContext *pb = s->pb;

  1395.     int i, j, temporal_reordering = 0;

  1396.     int key_index = mxf->last_key_index;

  1397. 

  1398.     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);

  1399. 

  1400.     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)

  1401.         return;

  1402. 

  1403.     avio_write(pb, index_table_segment_key, 16);

  1404. 

  1405.     if (mxf->edit_unit_byte_count) {

  1406.         klv_encode_ber_length(pb, 80);

  1407.     } else {

  1408.         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +

  1409.                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));

  1410.     }

  1411. 

  1412.     // instance id

  1413.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1414.     mxf_write_uuid(pb, IndexTableSegment, 0);

  1415. 

  1416.     // index edit rate

  1417.     mxf_write_local_tag(pb, 8, 0x3F0B);

  1418.     avio_wb32(pb, mxf->time_base.den);

  1419.     avio_wb32(pb, mxf->time_base.num);

  1420. 

  1421.     // index start position

  1422.     mxf_write_local_tag(pb, 8, 0x3F0C);

  1423.     avio_wb64(pb, mxf->last_indexed_edit_unit);

  1424. 

  1425.     // index duration

  1426.     mxf_write_local_tag(pb, 8, 0x3F0D);

  1427.     if (mxf->edit_unit_byte_count)

  1428.         avio_wb64(pb, 0); // index table covers whole container

  1429.     else

  1430.         avio_wb64(pb, mxf->edit_units_count);

  1431. 

  1432.     // edit unit byte count

  1433.     mxf_write_local_tag(pb, 4, 0x3F05);

  1434.     avio_wb32(pb, mxf->edit_unit_byte_count);

  1435. 

  1436.     // index sid

  1437.     mxf_write_local_tag(pb, 4, 0x3F06);

  1438.     avio_wb32(pb, 2);

  1439. 

  1440.     // body sid

  1441.     mxf_write_local_tag(pb, 4, 0x3F07);

  1442.     avio_wb32(pb, 1);

  1443. 

  1444.     if (!mxf->edit_unit_byte_count) {

  1445.         // real slice count - 1

  1446.         mxf_write_local_tag(pb, 1, 0x3F08);

  1447.         avio_w8(pb, mxf->slice_count);

  1448. 

  1449.         // delta entry array

  1450.         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);

  1451.         avio_wb32(pb, s->nb_streams+1); // num of entries

  1452.         avio_wb32(pb, 6);               // size of one entry

  1453.         // write system item delta entry

  1454.         avio_w8(pb, 0);

  1455.         avio_w8(pb, 0); // slice entry

  1456.         avio_wb32(pb, 0); // element delta

  1457.         for (i = 0; i < s->nb_streams; i++) {

  1458.             AVStream *st = s->streams[i];

  1459.             MXFStreamContext *sc = st->priv_data;

  1460.             avio_w8(pb, sc->temporal_reordering);

  1461.             if (sc->temporal_reordering)

  1462.                 temporal_reordering = 1;

  1463.             if (i == 0) { // video track

  1464.                 avio_w8(pb, 0); // slice number

  1465.                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill

  1466.             } else { // audio track

  1467.                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;

  1468.                 audio_frame_size += klv_fill_size(audio_frame_size);

  1469.                 avio_w8(pb, 1);

  1470.                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta

  1471.             }

  1472.         }

  1473. 

  1474.         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);

  1475.         avio_wb32(pb, mxf->edit_units_count);  // num of entries

  1476.         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry

  1477. 

  1478.         for (i = 0; i < mxf->edit_units_count; i++) {

  1479.             int temporal_offset = 0;

  1480. 

  1481.             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame

  1482.                 mxf->last_key_index = key_index;

  1483.                 key_index = i;

  1484.             }

  1485. 

  1486.             if (temporal_reordering) {

  1487.                 int pic_num_in_gop = i - key_index;

  1488.                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {

  1489.                     for (j = key_index; j < mxf->edit_units_count; j++) {

  1490.                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)

  1491.                             break;

  1492.                     }

  1493.                     if (j == mxf->edit_units_count)

  1494.                         av_log(s, AV_LOG_WARNING, "missing frames\n");

  1495.                     temporal_offset = j - key_index - pic_num_in_gop;

  1496.                 }

  1497.             }

  1498.             avio_w8(pb, temporal_offset);

  1499. 

  1500.             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction

  1501.                 avio_w8(pb, mxf->last_key_index - i);

  1502.             } else {

  1503.                 avio_w8(pb, key_index - i); // key frame offset

  1504.                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward

  1505.                     mxf->last_key_index = key_index;

  1506.             }

  1507. 

  1508.             if (!(mxf->index_entries[i].flags & 0x33) && // I frame

  1509.                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)

  1510.                 mxf->index_entries[i].flags |= 0x80; // random access

  1511.             avio_w8(pb, mxf->index_entries[i].flags);

  1512.             // stream offset

  1513.             avio_wb64(pb, mxf->index_entries[i].offset);

  1514.             if (s->nb_streams > 1)

  1515.                 avio_wb32(pb, mxf->index_entries[i].slice_offset);

  1516.         }

  1517. 

  1518.         mxf->last_key_index = key_index - mxf->edit_units_count;

  1519.         mxf->last_indexed_edit_unit += mxf->edit_units_count;

  1520.         mxf->edit_units_count = 0;

  1521.     }

  1522. }

  1523. 

  1524. static void mxf_write_klv_fill(AVFormatContext *s)

  1525. {

  1526.     unsigned pad = klv_fill_size(avio_tell(s->pb));

  1527.     if (pad) {

  1528.         avio_write(s->pb, klv_fill_key, 16);

  1529.         pad -= 16 + 4;

  1530.         klv_encode_ber4_length(s->pb, pad);

  1531.         ffio_fill(s->pb, 0, pad);

  1532.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  1533.     }

  1534. }

  1535. 

  1536. static int mxf_write_partition(AVFormatContext *s, int bodysid,

  1537.                                 int indexsid,

  1538.                                 const uint8_t *key, int write_metadata)

  1539. {

  1540.     MXFContext *mxf = s->priv_data;

  1541.     AVIOContext *pb = s->pb;

  1542.     int64_t header_byte_count_offset;

  1543.     unsigned index_byte_count = 0;

  1544.     uint64_t partition_offset = avio_tell(pb);

  1545.     int err;

  1546. 

  1547.     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)

  1548.         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +

  1549.             12+mxf->edit_units_count*(11+mxf->slice_count*4);

  1550.     else if (mxf->edit_unit_byte_count && indexsid)

  1551.         index_byte_count = 80;

  1552. 

  1553.     if (index_byte_count) {

  1554.         // add encoded ber length

  1555.         index_byte_count += 16 + klv_ber_length(index_byte_count);

  1556.         index_byte_count += klv_fill_size(index_byte_count);

  1557.     }

  1558. 

  1559.     if (key && !memcmp(key, body_partition_key, 16)) {

  1560.         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,

  1561.                                      sizeof(*mxf->body_partition_offset))) < 0) {

  1562.             mxf->body_partitions_count = 0;

  1563.             return err;

  1564.         }

  1565.         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;

  1566.     }

  1567. 

  1568.     // write klv

  1569.     if (key)

  1570.         avio_write(pb, key, 16);

  1571.     else

  1572.         avio_write(pb, body_partition_key, 16);

  1573. 

  1574.     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));

  1575. 

  1576.     // write partition value

  1577.     avio_wb16(pb, 1); // majorVersion

  1578.     avio_wb16(pb, 2); // minorVersion

  1579.     avio_wb32(pb, KAG_SIZE); // KAGSize

  1580. 

  1581.     avio_wb64(pb, partition_offset); // ThisPartition

  1582. 

  1583.     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)

  1584.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition

  1585.     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)

  1586.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition

  1587.     else

  1588.         avio_wb64(pb, 0);

  1589. 

  1590.     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition

  1591. 

  1592.     // set offset

  1593.     header_byte_count_offset = avio_tell(pb);

  1594.     avio_wb64(pb, 0); // headerByteCount, update later

  1595. 

  1596.     // indexTable

  1597.     avio_wb64(pb, index_byte_count); // indexByteCount

  1598.     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID

  1599. 

  1600.     // BodyOffset

  1601.     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)

  1602.         avio_wb64(pb, mxf->body_offset);

  1603.     else

  1604.         avio_wb64(pb, 0);

  1605. 

  1606.     avio_wb32(pb, bodysid); // bodySID

  1607. 

  1608.     // operational pattern

  1609.     if (s->oformat == &ff_mxf_opatom_muxer)

  1610.         avio_write(pb, opatom_ul, 16);

  1611.     else

  1612.         avio_write(pb, op1a_ul, 16);

  1613. 

  1614.     // essence container

  1615.     mxf_write_essence_container_refs(s);

  1616. 

  1617.     if (write_metadata) {

  1618.         // mark the start of the headermetadata and calculate metadata size

  1619.         int64_t pos, start;

  1620.         unsigned header_byte_count;

  1621. 

  1622.         mxf_write_klv_fill(s);

  1623.         start = avio_tell(s->pb);

  1624.         mxf_write_primer_pack(s);

  1625.         mxf_write_header_metadata_sets(s);

  1626.         pos = avio_tell(s->pb);

  1627.         header_byte_count = pos - start + klv_fill_size(pos);

  1628. 

  1629.         // update header_byte_count

  1630.         avio_seek(pb, header_byte_count_offset, SEEK_SET);

  1631.         avio_wb64(pb, header_byte_count);

  1632.         avio_seek(pb, pos, SEEK_SET);

  1633.     }

  1634. 

  1635.     if(key)

  1636.         avio_flush(pb);

  1637. 

  1638.     return 0;

  1639. }

  1640. 

  1641. static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,

  1642. AVPacket *pkt)

  1643. {

  1644.     MXFContext *mxf = s->priv_data;

  1645.     MXFStreamContext *sc = st->priv_data;

  1646.     int i, cid;

  1647.     uint8_t* header_cid;

  1648.     int frame_size = 0;

  1649. 

  1650.     if (mxf->header_written)

  1651.         return 1;

  1652. 

  1653.     if (pkt->size < 43)

  1654.         return -1;

  1655. 

  1656.     header_cid = pkt->data + 0x28;

  1657.     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];

  1658. 

  1659.     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)

  1660.         return -1;

  1661.     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)

  1662.         return AVERROR_INVALIDDATA;

  1663. 

  1664.     switch (cid) {

  1665.     case 1235:

  1666.         sc->index = 24;

  1667.         sc->component_depth = 10;

  1668.         break;

  1669.     case 1237:

  1670.         sc->index = 25;

  1671.         break;

  1672.     case 1238:

  1673.         sc->index = 26;

  1674.         break;

  1675.     case 1241:

  1676.         sc->index = 27;

  1677.         sc->component_depth = 10;

  1678.         break;

  1679.     case 1242:

  1680.         sc->index = 28;

  1681.         break;

  1682.     case 1243:

  1683.         sc->index = 29;

  1684.         break;

  1685.     case 1250:

  1686.         sc->index = 30;

  1687.         sc->component_depth = 10;

  1688.         break;

  1689.     case 1251:

  1690.         sc->index = 31;

  1691.         break;

  1692.     case 1252:

  1693.         sc->index = 32;

  1694.         break;

  1695.     case 1253:

  1696.         sc->index = 33;

  1697.         break;

  1698.     default:

  1699.         return -1;

  1700.     }

  1701. 

  1702.     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  1703.     sc->aspect_ratio = (AVRational){ 16, 9 };

  1704. 

  1705.     if(s->oformat == &ff_mxf_opatom_muxer){

  1706.         mxf->edit_unit_byte_count = frame_size;

  1707.         return 1;

  1708.     }

  1709. 

  1710.     mxf->edit_unit_byte_count = KAG_SIZE;

  1711.     for (i = 0; i < s->nb_streams; i++) {

  1712.         AVStream *st = s->streams[i];

  1713.         MXFStreamContext *sc = st->priv_data;

  1714.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1715.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1716.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1717.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1718.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1719.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1720.         }

  1721.     }

  1722. 

  1723.     return 1;

  1724. }

  1725. 

  1726. static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1727. {

  1728.     MXFContext *mxf = s->priv_data;

  1729.     MXFStreamContext *sc = st->priv_data;

  1730.     uint8_t *vs_pack, *vsc_pack;

  1731.     int i, ul_index, frame_size, stype, pal;

  1732. 

  1733.     if (mxf->header_written)

  1734.         return 1;

  1735. 

  1736.     // Check for minimal frame size

  1737.     if (pkt->size < 120000)

  1738.         return -1;

  1739. 

  1740.     vs_pack  = pkt->data + 80*5 + 48;

  1741.     vsc_pack = pkt->data + 80*5 + 53;

  1742.     stype    = vs_pack[3] & 0x1f;

  1743.     pal      = (vs_pack[3] >> 5) & 0x1;

  1744. 

  1745.     if ((vs_pack[2] & 0x07) == 0x02)

  1746.         sc->aspect_ratio = (AVRational){ 16, 9 };

  1747.     else

  1748.         sc->aspect_ratio = (AVRational){ 4, 3 };

  1749. 

  1750.     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;

  1751.     // TODO: fix dv encoder to set proper FF/FS value in VSC pack

  1752.     // and set field dominance accordingly

  1753.     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);

  1754. 

  1755.     switch (stype) {

  1756.     case 0x18: // DV100 720p

  1757.         ul_index = 6 + pal;

  1758.         frame_size = pal ? 288000 : 240000;

  1759.         if (sc->interlaced) {

  1760.             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");

  1761.             sc->interlaced = 0;

  1762.         }

  1763.         break;

  1764.     case 0x14: // DV100 1080i

  1765.         ul_index = 4 + pal;

  1766.         frame_size = pal ? 576000 : 480000;

  1767.         break;

  1768.     case 0x04: // DV50

  1769.         ul_index = 2 + pal;

  1770.         frame_size = pal ? 288000 : 240000;

  1771.         break;

  1772.     default: // DV25

  1773.         ul_index = 0 + pal;

  1774.         frame_size = pal ? 144000 : 120000;

  1775.     }

  1776. 

  1777.     sc->index = ul_index + 16;

  1778.     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;

  1779. 

  1780.     if(s->oformat == &ff_mxf_opatom_muxer) {

  1781.         mxf->edit_unit_byte_count = frame_size;

  1782.         return 1;

  1783.     }

  1784. 

  1785.     mxf->edit_unit_byte_count = KAG_SIZE;

  1786.     for (i = 0; i < s->nb_streams; i++) {

  1787.         AVStream *st = s->streams[i];

  1788.         MXFStreamContext *sc = st->priv_data;

  1789.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1790.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1791.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1792.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1793.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1794.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1795.         }

  1796.     }

  1797. 

  1798.     return 1;

  1799. }

  1800. 

  1801. static const struct {

  1802.     UID uid;

  1803.     int frame_size;

  1804.     int profile;

  1805.     uint8_t interlaced;

  1806. } mxf_h264_codec_uls[] = {

  1807.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra

  1808.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60

  1809.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50

  1810.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30

  1811.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25

  1812.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60

  1813.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50

  1814.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra

  1815.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60

  1816.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50

  1817.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30

  1818.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25

  1819.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60

  1820.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50

  1821. };

  1822. 

  1823. static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,

  1824.                                 AVPacket *pkt, MXFIndexEntry *e)

  1825. {

  1826.     MXFContext *mxf = s->priv_data;

  1827.     MXFStreamContext *sc = st->priv_data;

  1828.     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);

  1829.     const uint8_t *buf = pkt->data;

  1830.     const uint8_t *buf_end = pkt->data + pkt->size;

  1831.     uint32_t state = -1;

  1832.     int extra_size = 512; // support AVC Intra files without SPS/PPS header

  1833.     int i, frame_size;

  1834.     uint8_t uid_found;

  1835. 

  1836.     if (pkt->size > extra_size)

  1837.         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header

  1838. 

  1839.     for (;;) {

  1840.         buf = avpriv_find_start_code(buf, buf_end, &state);

  1841.         if (buf >= buf_end)

  1842.             break;

  1843.         --buf;

  1844.         switch (state & 0x1f) {

  1845.         case NAL_SPS:

  1846.             st->codec->profile = buf[1];

  1847.             e->flags |= 0x40;

  1848.             break;

  1849.         case NAL_PPS:

  1850.             if (e->flags & 0x40) { // sequence header present

  1851.                 e->flags |= 0x80; // random access

  1852.                 extra_size = 0;

  1853.                 buf = buf_end;

  1854.             }

  1855.             break;

  1856.         default:

  1857.             break;

  1858.         }

  1859.     }

  1860. 

  1861.     if (mxf->header_written)

  1862.         return 1;

  1863. 

  1864.     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD

  1865.     sc->component_depth = 10; // AVC Intra is always 10 Bit

  1866.     sc->interlaced = st->codec->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;

  1867.     if (sc->interlaced)

  1868.         sc->field_dominance = 1; // top field first is mandatory for AVC Intra

  1869. 

  1870.     uid_found = 0;

  1871.     frame_size = pkt->size + extra_size;

  1872.     for (i = 0; i < mxf_h264_num_codec_uls; i++) {

  1873.         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {

  1874.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  1875.             return 1;

  1876.         } else if (st->codec->profile == mxf_h264_codec_uls[i].profile) {

  1877.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  1878.             uid_found = 1;

  1879.         }

  1880.     }

  1881. 

  1882.     if (!uid_found) {

  1883.         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");

  1884.         return 0;

  1885.     }

  1886. 

  1887.     return 1;

  1888. }

  1889. 

  1890. static const UID mxf_mpeg2_codec_uls[] = {

  1891.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame

  1892.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP

  1893.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame

  1894.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP

  1895.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame

  1896.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP

  1897.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame

  1898.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP

  1899.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame

  1900.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP

  1901. };

  1902. 

  1903. static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)

  1904. {

  1905.     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;

  1906. 

  1907.     if (avctx->profile == 4) { // Main

  1908.         if (avctx->level == 8) // Main

  1909.             return &mxf_mpeg2_codec_uls[0+long_gop];

  1910.         else if (avctx->level == 4) // High

  1911.             return &mxf_mpeg2_codec_uls[4+long_gop];

  1912.         else if (avctx->level == 6) // High 14

  1913.             return &mxf_mpeg2_codec_uls[8+long_gop];

  1914.     } else if (avctx->profile == 0) { // 422

  1915.         if (avctx->level == 5) // Main

  1916.             return &mxf_mpeg2_codec_uls[2+long_gop];

  1917.         else if (avctx->level == 2) // High

  1918.             return &mxf_mpeg2_codec_uls[6+long_gop];

  1919.     }

  1920.     return NULL;

  1921. }

  1922. 

  1923. static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,

  1924.                                  AVPacket *pkt, MXFIndexEntry *e)

  1925. {

  1926.     MXFStreamContext *sc = st->priv_data;

  1927.     uint32_t c = -1;

  1928.     int i;

  1929. 

  1930.     for(i = 0; i < pkt->size - 4; i++) {

  1931.         c = (c<<8) + pkt->data[i];

  1932.         if (c == 0x1b5) {

  1933.             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext

  1934.                 st->codec->profile = pkt->data[i+1] & 0x07;

  1935.                 st->codec->level   = pkt->data[i+2] >> 4;

  1936.             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext

  1937.                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame

  1938.                 if (sc->interlaced)

  1939.                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first

  1940.                 break;

  1941.             }

  1942.         } else if (c == 0x1b8) { // gop

  1943.             if (pkt->data[i+4]>>6 & 0x01) { // closed

  1944.                 sc->closed_gop = 1;

  1945.                 if (e->flags & 0x40) // sequence header present

  1946.                     e->flags |= 0x80; // random access

  1947.             }

  1948.         } else if (c == 0x1b3) { // seq

  1949.             e->flags |= 0x40;

  1950.             switch ((pkt->data[i+4]>>4) & 0xf) {

  1951.             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;

  1952.             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;

  1953.             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;

  1954.             default:

  1955.                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,

  1956.                           st->codec->width, st->codec->height, 1024*1024);

  1957.             }

  1958.         } else if (c == 0x100) { // pic

  1959.             int pict_type = (pkt->data[i+2]>>3) & 0x07;

  1960.             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);

  1961.             if (pict_type == 2) { // P frame

  1962.                 e->flags |= 0x22;

  1963.                 sc->closed_gop = 0; // reset closed gop, don't matter anymore

  1964.             } else if (pict_type == 3) { // B frame

  1965.                 if (sc->closed_gop)

  1966.                     e->flags |= 0x13; // only backward prediction

  1967.                 else

  1968.                     e->flags |= 0x33;

  1969.                 sc->temporal_reordering = -1;

  1970.             } else if (!pict_type) {

  1971.                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");

  1972.                 return 0;

  1973.             }

  1974.         }

  1975.     }

  1976.     if (s->oformat != &ff_mxf_d10_muxer)

  1977.         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);

  1978.     return !!sc->codec_ul;

  1979. }

  1980. 

  1981. static uint64_t mxf_parse_timestamp(time_t timestamp)

  1982. {

  1983.     struct tm tmbuf;

  1984.     struct tm *time = gmtime_r(&timestamp, &tmbuf);

  1985.     if (!time)

  1986.         return 0;

  1987.     return (uint64_t)(time->tm_year+1900) << 48 |

  1988.            (uint64_t)(time->tm_mon+1)     << 40 |

  1989.            (uint64_t) time->tm_mday       << 32 |

  1990.                       time->tm_hour       << 24 |

  1991.                       time->tm_min        << 16 |

  1992.                       time->tm_sec        << 8;

  1993. }

  1994. 

  1995. static void mxf_gen_umid(AVFormatContext *s)

  1996. {

  1997.     MXFContext *mxf = s->priv_data;

  1998.     uint32_t seed = av_get_random_seed();

  1999.     uint64_t umid = seed + 0x5294713400000000LL;

  2000. 

  2001.     AV_WB64(mxf->umid  , umid);

  2002.     AV_WB64(mxf->umid+8, umid>>8);

  2003. 

  2004.     mxf->instance_number = seed & 0xFFFFFF;

  2005. }

  2006. 

  2007. static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)

  2008. {

  2009.     MXFContext *mxf = s->priv_data;

  2010.     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);

  2011.     if (!tcr)

  2012.         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);

  2013. 

  2014.     if (tcr)

  2015.         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);

  2016.     else

  2017.         return av_timecode_init(&mxf->tc, rate, 0, 0, s);

  2018. }

  2019. 

  2020. static int mxf_write_header(AVFormatContext *s)

  2021. {

  2022.     MXFContext *mxf = s->priv_data;

  2023.     int i, ret;

  2024.     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};

  2025.     const MXFSamplesPerFrame *spf = NULL;

  2026.     AVDictionaryEntry *t;

  2027.     int64_t timestamp = 0;

  2028. 

  2029.     if (!s->nb_streams)

  2030.         return -1;

  2031. 

  2032.     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1){

  2033.         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");

  2034.         return -1;

  2035.     }

  2036. 

  2037.     for (i = 0; i < s->nb_streams; i++) {

  2038.         AVStream *st = s->streams[i];

  2039.         MXFStreamContext *sc = av_mallocz(sizeof(*sc));

  2040.         if (!sc)

  2041.             return AVERROR(ENOMEM);

  2042.         st->priv_data = sc;

  2043. 

  2044.         if (((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {

  2045.             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");

  2046.             return -1;

  2047.         }

  2048. 

  2049.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  2050.             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codec->pix_fmt);

  2051.             // TODO: should be avg_frame_rate

  2052.             AVRational rate, tbc = st->time_base;

  2053.             // Default component depth to 8

  2054.             sc->component_depth = 8;

  2055.             sc->h_chroma_sub_sample = 2;

  2056.             sc->color_siting = 0xFF;

  2057. 

  2058.             if (pix_desc) {

  2059.                 sc->component_depth     = pix_desc->comp[0].depth_minus1 + 1;

  2060.                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;

  2061.             }

  2062.             switch (ff_choose_chroma_location(s, st)) {

  2063.             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;

  2064.             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;

  2065.             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;

  2066.             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;

  2067.             }

  2068. 

  2069.             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;

  2070.             spf = ff_mxf_get_samples_per_frame(s, tbc);

  2071.             if (!spf) {

  2072.                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",

  2073.                        tbc.den, tbc.num);

  2074.                 return AVERROR(EINVAL);

  2075.             }

  2076.             mxf->time_base = spf->time_base;

  2077.             rate = av_inv_q(mxf->time_base);

  2078.             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);

  2079.             if((ret = mxf_init_timecode(s, st, rate)) < 0)

  2080.                 return ret;

  2081. 

  2082.             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;

  2083.             if (s->oformat == &ff_mxf_d10_muxer) {

  2084.                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {

  2085.                     sc->index = 3;

  2086.                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && (mxf->time_base.den != 25)) {

  2087.                     sc->index = 5;

  2088.                 } else if (sc->video_bit_rate == 40000000) {

  2089.                     if (mxf->time_base.den == 25) sc->index = 7;

  2090.                     else                          sc->index = 9;

  2091.                 } else if (sc->video_bit_rate == 30000000) {

  2092.                     if (mxf->time_base.den == 25) sc->index = 11;

  2093.                     else                          sc->index = 13;

  2094.                 } else {

  2095.                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");

  2096.                     return -1;

  2097.                 }

  2098. 

  2099.                 mxf->edit_unit_byte_count = KAG_SIZE; // system element

  2100.                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *

  2101.                     mxf->time_base.num / (8*mxf->time_base.den);

  2102.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  2103.                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;

  2104.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  2105. 

  2106.                 sc->signal_standard = 1;

  2107.             }

  2108.             if (mxf->signal_standard >= 0)

  2109.                 sc->signal_standard = mxf->signal_standard;

  2110.         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  2111.             if (st->codec->sample_rate != 48000) {

  2112.                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");

  2113.                 return -1;

  2114.             }

  2115.             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);

  2116.             if (s->oformat == &ff_mxf_d10_muxer) {

  2117.                 if (st->index != 1) {

  2118.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");

  2119.                     return -1;

  2120.                 }

  2121.                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&

  2122.                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {

  2123.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");

  2124.                 }

  2125.                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;

  2126.             } else if (s->oformat == &ff_mxf_opatom_muxer) {

  2127.                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);

  2128. 

  2129.                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&

  2130.                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {

  2131.                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");

  2132.                     return AVERROR_PATCHWELCOME;

  2133.                 }

  2134.                 if (st->codec->channels != 1) {

  2135.                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");

  2136.                     return AVERROR(EINVAL);

  2137.                 }

  2138. 

  2139.                 spf = ff_mxf_get_samples_per_frame(s, tbc);

  2140.                 if (!spf){

  2141.                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);

  2142.                     return AVERROR(EINVAL);

  2143.                 }

  2144. 

  2145.                 mxf->time_base = st->time_base;

  2146.                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)

  2147.                     return ret;

  2148. 

  2149.                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;

  2150.                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;

  2151.                 sc->index = 2;

  2152.             } else {

  2153.                 mxf->slice_count = 1;

  2154.             }

  2155.         }

  2156. 

  2157.         if (!sc->index) {

  2158.             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);

  2159.             if (sc->index == -1) {

  2160.                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "

  2161.                        "codec not currently supported in container\n", i);

  2162.                 return -1;

  2163.             }

  2164.         }

  2165. 

  2166.         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  2167. 

  2168.         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);

  2169.         sc->track_essence_element_key[15] = present[sc->index];

  2170.         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);

  2171. 

  2172.         if (!present[sc->index])

  2173.             mxf->essence_container_count++;

  2174.         present[sc->index]++;

  2175.     }

  2176. 

  2177.     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {

  2178.         mxf->essence_container_count = 1;

  2179.     }

  2180. 

  2181.     if (!(s->flags & AVFMT_FLAG_BITEXACT))

  2182.         mxf_gen_umid(s);

  2183. 

  2184.     for (i = 0; i < s->nb_streams; i++) {

  2185.         MXFStreamContext *sc = s->streams[i]->priv_data;

  2186.         // update element count

  2187.         sc->track_essence_element_key[13] = present[sc->index];

  2188.         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV

  2189.             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);

  2190.         else

  2191.             sc->order = AV_RB32(sc->track_essence_element_key+12);

  2192.     }

  2193. 

  2194.     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))

  2195.         timestamp = ff_iso8601_to_unix_time(t->value);

  2196.     if (timestamp)

  2197.         mxf->timestamp = mxf_parse_timestamp(timestamp);

  2198.     mxf->duration = -1;

  2199. 

  2200.     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));

  2201.     if (!mxf->timecode_track)

  2202.         return AVERROR(ENOMEM);

  2203.     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));

  2204.     if (!mxf->timecode_track->priv_data)

  2205.         return AVERROR(ENOMEM);

  2206.     mxf->timecode_track->index = -1;

  2207. 

  2208.     if (!spf)

  2209.         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });

  2210. 

  2211.     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)

  2212.         return -1;

  2213. 

  2214.     return 0;

  2215. }

  2216. 

  2217. static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };

  2218. 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 };

  2219. 

  2220. static void mxf_write_system_item(AVFormatContext *s)

  2221. {

  2222.     MXFContext *mxf = s->priv_data;

  2223.     AVIOContext *pb = s->pb;

  2224.     unsigned frame;

  2225.     uint32_t time_code;

  2226. 

  2227.     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  2228. 

  2229.     // write system metadata pack

  2230.     avio_write(pb, system_metadata_pack_key, 16);

  2231.     klv_encode_ber4_length(pb, 57);

  2232.     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present

  2233.     avio_w8(pb, 0x04); // content package rate

  2234.     avio_w8(pb, 0x00); // content package type

  2235.     avio_wb16(pb, 0x00); // channel handle

  2236.     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow

  2237.     if (mxf->essence_container_count > 1)

  2238.         avio_write(pb, multiple_desc_ul, 16);

  2239.     else {

  2240.         MXFStreamContext *sc = s->streams[0]->priv_data;

  2241.         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);

  2242.     }

  2243.     avio_w8(pb, 0);

  2244.     avio_wb64(pb, 0);

  2245.     avio_wb64(pb, 0); // creation date/time stamp

  2246. 

  2247.     avio_w8(pb, 0x81); // SMPTE 12M time code

  2248.     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);

  2249.     avio_wb32(pb, time_code);

  2250.     avio_wb32(pb, 0); // binary group data

  2251.     avio_wb64(pb, 0);

  2252. 

  2253.     // write system metadata package set

  2254.     avio_write(pb, system_metadata_package_set_key, 16);

  2255.     klv_encode_ber4_length(pb, 35);

  2256.     avio_w8(pb, 0x83); // UMID

  2257.     avio_wb16(pb, 0x20);

  2258.     mxf_write_umid(s, 1);

  2259. }

  2260. 

  2261. static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  2262. {

  2263.     MXFContext *mxf = s->priv_data;

  2264.     AVIOContext *pb = s->pb;

  2265.     MXFStreamContext *sc = st->priv_data;

  2266.     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /

  2267.         (8*mxf->time_base.den); // frame size

  2268.     int pad;

  2269. 

  2270.     packet_size += 16 + 4;

  2271.     packet_size += klv_fill_size(packet_size);

  2272. 

  2273.     klv_encode_ber4_length(pb, pkt->size);

  2274.     avio_write(pb, pkt->data, pkt->size);

  2275. 

  2276.     // ensure CBR muxing by padding to correct video frame size

  2277.     pad = packet_size - pkt->size - 16 - 4;

  2278.     if (pad > 20) {

  2279.         avio_write(s->pb, klv_fill_key, 16);

  2280.         pad -= 16 + 4;

  2281.         klv_encode_ber4_length(s->pb, pad);

  2282.         ffio_fill(s->pb, 0, pad);

  2283.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  2284.     } else {

  2285.         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");

  2286.         ffio_fill(s->pb, 0, pad);

  2287.     }

  2288. }

  2289. 

  2290. static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  2291. {

  2292.     MXFContext *mxf = s->priv_data;

  2293.     AVIOContext *pb = s->pb;

  2294.     int frame_size = pkt->size / st->codec->block_align;

  2295.     uint8_t *samples = pkt->data;

  2296.     uint8_t *end = pkt->data + pkt->size;

  2297.     int i;

  2298. 

  2299.     klv_encode_ber4_length(pb, 4 + frame_size*4*8);

  2300. 

  2301.     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));

  2302.     avio_wl16(pb, frame_size);

  2303.     avio_w8(pb, (1<<st->codec->channels)-1);

  2304. 

  2305.     while (samples < end) {

  2306.         for (i = 0; i < st->codec->channels; i++) {

  2307.             uint32_t sample;

  2308.             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {

  2309.                 sample = AV_RL24(samples)<< 4;

  2310.                 samples += 3;

  2311.             } else {

  2312.                 sample = AV_RL16(samples)<<12;

  2313.                 samples += 2;

  2314.             }

  2315.             avio_wl32(pb, sample | i);

  2316.         }

  2317.         for (; i < 8; i++)

  2318.             avio_wl32(pb, i);

  2319.     }

  2320. }

  2321. 

  2322. static int mxf_write_opatom_body_partition(AVFormatContext *s)

  2323. {

  2324.     MXFContext *mxf = s->priv_data;

  2325.     AVIOContext *pb = s->pb;

  2326.     AVStream *st = s->streams[0];

  2327.     MXFStreamContext *sc = st->priv_data;

  2328.     const uint8_t *key = NULL;

  2329. 

  2330.     int err;

  2331. 

  2332.     if (!mxf->header_written)

  2333.         key = body_partition_key;

  2334. 

  2335.     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)

  2336.         return err;

  2337.     mxf_write_klv_fill(s);

  2338.     avio_write(pb, sc->track_essence_element_key, 16);

  2339.     klv_encode_ber9_length(pb, mxf->body_offset);

  2340.     return 0;

  2341. }

  2342. 

  2343. static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)

  2344. {

  2345.     MXFContext *mxf = s->priv_data;

  2346.     AVIOContext *pb = s->pb;

  2347. 

  2348.     int err;

  2349. 

  2350.     if (!mxf->header_written) {

  2351.         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  2352.             return err;

  2353.         mxf_write_klv_fill(s);

  2354. 

  2355.         if ((err = mxf_write_opatom_body_partition(s)) < 0)

  2356.             return err;

  2357.         mxf->header_written = 1;

  2358.     }

  2359. 

  2360.     if (!mxf->edit_unit_byte_count) {

  2361.         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2362.         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;

  2363.         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;

  2364.     }

  2365.     mxf->edit_units_count++;

  2366.     avio_write(pb, pkt->data, pkt->size);

  2367.     mxf->body_offset += pkt->size;

  2368.     avio_flush(pb);

  2369. 

  2370.     return 0;

  2371. }

  2372. 

  2373. static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)

  2374. {

  2375.     MXFContext *mxf = s->priv_data;

  2376.     AVIOContext *pb = s->pb;

  2377.     AVStream *st = s->streams[pkt->stream_index];

  2378.     MXFStreamContext *sc = st->priv_data;

  2379.     MXFIndexEntry ie = {0};

  2380.     int err;

  2381. 

  2382.     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {

  2383.         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count

  2384.                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {

  2385.             mxf->edit_units_count = 0;

  2386.             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");

  2387.             return err;

  2388.         }

  2389.     }

  2390. 

  2391.     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {

  2392.         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {

  2393.             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");

  2394.             return -1;

  2395.         }

  2396.     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {

  2397.         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {

  2398.             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");

  2399.             return -1;

  2400.         }

  2401.     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {

  2402.         if (!mxf_parse_dv_frame(s, st, pkt)) {

  2403.             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");

  2404.             return -1;

  2405.         }

  2406.     } else if (st->codec->codec_id == AV_CODEC_ID_H264) {

  2407.         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {

  2408.             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");

  2409.             return -1;

  2410.         }

  2411.     }

  2412. 

  2413.     if (s->oformat == &ff_mxf_opatom_muxer)

  2414.         return mxf_write_opatom_packet(s, pkt, &ie);

  2415. 

  2416.     if (!mxf->header_written) {

  2417.         if (mxf->edit_unit_byte_count) {

  2418.             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)

  2419.                 return err;

  2420.             mxf_write_klv_fill(s);

  2421.             mxf_write_index_table_segment(s);

  2422.         } else {

  2423.             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  2424.                 return err;

  2425.         }

  2426.         mxf->header_written = 1;

  2427.     }

  2428. 

  2429.     if (st->index == 0) {

  2430.         if (!mxf->edit_unit_byte_count &&

  2431.             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&

  2432.             !(ie.flags & 0x33)) { // I frame, Gop start

  2433.             mxf_write_klv_fill(s);

  2434.             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)

  2435.                 return err;

  2436.             mxf_write_klv_fill(s);

  2437.             mxf_write_index_table_segment(s);

  2438.         }

  2439. 

  2440.         mxf_write_klv_fill(s);

  2441.         mxf_write_system_item(s);

  2442. 

  2443.         if (!mxf->edit_unit_byte_count) {

  2444.             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2445.             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;

  2446.             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;

  2447.             mxf->body_offset += KAG_SIZE; // size of system element

  2448.         }

  2449.         mxf->edit_units_count++;

  2450.     } else if (!mxf->edit_unit_byte_count && st->index == 1) {

  2451.         mxf->index_entries[mxf->edit_units_count-1].slice_offset =

  2452.             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;

  2453.     }

  2454. 

  2455.     mxf_write_klv_fill(s);

  2456.     avio_write(pb, sc->track_essence_element_key, 16); // write key

  2457.     if (s->oformat == &ff_mxf_d10_muxer) {

  2458.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)

  2459.             mxf_write_d10_video_packet(s, st, pkt);

  2460.         else

  2461.             mxf_write_d10_audio_packet(s, st, pkt);

  2462.     } else {

  2463.         klv_encode_ber4_length(pb, pkt->size); // write length

  2464.         avio_write(pb, pkt->data, pkt->size);

  2465.         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);

  2466.     }

  2467. 

  2468.     avio_flush(pb);

  2469. 

  2470.     return 0;

  2471. }

  2472. 

  2473. static void mxf_write_random_index_pack(AVFormatContext *s)

  2474. {

  2475.     MXFContext *mxf = s->priv_data;

  2476.     AVIOContext *pb = s->pb;

  2477.     uint64_t pos = avio_tell(pb);

  2478.     int i;

  2479. 

  2480.     avio_write(pb, random_index_pack_key, 16);

  2481.     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);

  2482. 

  2483.     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)

  2484.         avio_wb32(pb, 1); // BodySID of header partition

  2485.     else

  2486.         avio_wb32(pb, 0);

  2487.     avio_wb64(pb, 0); // offset of header partition

  2488. 

  2489.     for (i = 0; i < mxf->body_partitions_count; i++) {

  2490.         avio_wb32(pb, 1); // BodySID

  2491.         avio_wb64(pb, mxf->body_partition_offset[i]);

  2492.     }

  2493. 

  2494.     avio_wb32(pb, 0); // BodySID of footer partition

  2495.     avio_wb64(pb, mxf->footer_partition_offset);

  2496. 

  2497.     avio_wb32(pb, avio_tell(pb) - pos + 4);

  2498. }

  2499. 

  2500. static int mxf_write_footer(AVFormatContext *s)

  2501. {

  2502.     MXFContext *mxf = s->priv_data;

  2503.     AVIOContext *pb = s->pb;

  2504.     int err = 0;

  2505. 

  2506.     if (!mxf->header_written ||

  2507.         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {

  2508.         /* reason could be invalid options/not supported codec/out of memory */

  2509.         err = AVERROR_UNKNOWN;

  2510.         goto end;

  2511.     }

  2512. 

  2513.     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  2514. 

  2515.     mxf_write_klv_fill(s);

  2516.     mxf->footer_partition_offset = avio_tell(pb);

  2517.     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index

  2518.         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)

  2519.             goto end;

  2520.     } else {

  2521.         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)

  2522.             goto end;

  2523.         mxf_write_klv_fill(s);

  2524.         mxf_write_index_table_segment(s);

  2525.     }

  2526. 

  2527.     mxf_write_klv_fill(s);

  2528.     mxf_write_random_index_pack(s);

  2529. 

  2530.     if (s->pb->seekable) {

  2531.         if (s->oformat == &ff_mxf_opatom_muxer){

  2532.             /* rewrite body partition to update lengths */

  2533.             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);

  2534.             if ((err = mxf_write_opatom_body_partition(s)) < 0)

  2535.                 goto end;

  2536.         }

  2537. 

  2538.         avio_seek(pb, 0, SEEK_SET);

  2539.         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {

  2540.             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)

  2541.                 goto end;

  2542.             mxf_write_klv_fill(s);

  2543.             mxf_write_index_table_segment(s);

  2544.         } else {

  2545.             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)

  2546.                 goto end;

  2547.         }

  2548.     }

  2549. 

  2550. end:

  2551.     ff_audio_interleave_close(s);

  2552. 

  2553.     av_freep(&mxf->index_entries);

  2554.     av_freep(&mxf->body_partition_offset);

  2555.     av_freep(&mxf->timecode_track->priv_data);

  2556.     av_freep(&mxf->timecode_track);

  2557. 

  2558.     mxf_free(s);

  2559. 

  2560.     return err < 0 ? err : 0;

  2561. }

  2562. 

  2563. static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2564. {

  2565.     int i, stream_count = 0;

  2566. 

  2567.     for (i = 0; i < s->nb_streams; i++)

  2568.         stream_count += !!s->streams[i]->last_in_packet_buffer;

  2569. 

  2570.     if (stream_count && (s->nb_streams == stream_count || flush)) {

  2571.         AVPacketList *pktl = s->internal->packet_buffer;

  2572.         if (s->nb_streams != stream_count) {

  2573.             AVPacketList *last = NULL;

  2574.             // find last packet in edit unit

  2575.             while (pktl) {

  2576.                 if (!stream_count || pktl->pkt.stream_index == 0)

  2577.                     break;

  2578.                 last = pktl;

  2579.                 pktl = pktl->next;

  2580.                 stream_count--;

  2581.             }

  2582.             // purge packet queue

  2583.             while (pktl) {

  2584.                 AVPacketList *next = pktl->next;

  2585. 

  2586.                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2587.                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2588.                 av_free_packet(&pktl->pkt);

  2589.                 av_freep(&pktl);

  2590.                 pktl = next;

  2591.             }

  2592.             if (last)

  2593.                 last->next = NULL;

  2594.             else {

  2595.                 s->internal->packet_buffer = NULL;

  2596.                 s->internal->packet_buffer_end= NULL;

  2597.                 goto out;

  2598.             }

  2599.             pktl = s->internal->packet_buffer;

  2600.         }

  2601. 

  2602.         *out = pktl->pkt;

  2603.         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);

  2604.         s->internal->packet_buffer = pktl->next;

  2605.         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2606.             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2607.         if(!s->internal->packet_buffer)

  2608.             s->internal->packet_buffer_end= NULL;

  2609.         av_freep(&pktl);

  2610.         return 1;

  2611.     } else {

  2612.     out:

  2613.         av_init_packet(out);

  2614.         return 0;

  2615.     }

  2616. }

  2617. 

  2618. static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)

  2619. {

  2620.     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;

  2621.     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;

  2622. 

  2623.     return next->dts > pkt->dts ||

  2624.         (next->dts == pkt->dts && sc->order < sc2->order);

  2625. }

  2626. 

  2627. static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2628. {

  2629.     return ff_audio_rechunk_interleave(s, out, pkt, flush,

  2630.                                mxf_interleave_get_packet, mxf_compare_timestamps);

  2631. }

  2632. 

  2633. #define MXF_COMMON_OPTIONS \

  2634.     { "signal_standard", "Force/set Sigal Standard",\

  2635.       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2636.     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\

  2637.       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2638.     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\

  2639.       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2640.     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\

  2641.       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2642.     { "smpte274m", "SMPTE 274M (1125 line)",\

  2643.       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2644.     { "smpte296m", "SMPTE 296M (750 line progressive)",\

  2645.       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2646.     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\

  2647.       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\

  2648.     { "smpte428", "SMPTE 428-1 DCDM",\

  2649.       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},

  2650. 

  2651. 

  2652. 

  2653. static const AVOption mxf_options[] = {

  2654.     MXF_COMMON_OPTIONS

  2655.     { NULL },

  2656. };

  2657. 

  2658. static const AVClass mxf_muxer_class = {

  2659.     .class_name     = "MXF muxer",

  2660.     .item_name      = av_default_item_name,

  2661.     .option         = mxf_options,

  2662.     .version        = LIBAVUTIL_VERSION_INT,

  2663. };

  2664. 

  2665. static const AVOption d10_options[] = {

  2666.     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",

  2667.       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},

  2668.     MXF_COMMON_OPTIONS

  2669.     { NULL },

  2670. };

  2671. 

  2672. static const AVClass mxf_d10_muxer_class = {

  2673.     .class_name     = "MXF-D10 muxer",

  2674.     .item_name      = av_default_item_name,

  2675.     .option         = d10_options,

  2676.     .version        = LIBAVUTIL_VERSION_INT,

  2677. };

  2678. 

  2679. static const AVOption opatom_options[] = {

  2680.     { "mxf_audio_edit_rate", "Audio edit rate for timecode",

  2681.         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },

  2682.     MXF_COMMON_OPTIONS

  2683.     { NULL },

  2684. };

  2685. 

  2686. static const AVClass mxf_opatom_muxer_class = {

  2687.     .class_name     = "MXF-OPAtom muxer",

  2688.     .item_name      = av_default_item_name,

  2689.     .option         = opatom_options,

  2690.     .version        = LIBAVUTIL_VERSION_INT,

  2691. };

  2692. 

  2693. AVOutputFormat ff_mxf_muxer = {

  2694.     .name              = "mxf",

  2695.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),

  2696.     .mime_type         = "application/mxf",

  2697.     .extensions        = "mxf",

  2698.     .priv_data_size    = sizeof(MXFContext),

  2699.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2700.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2701.     .write_header      = mxf_write_header,

  2702.     .write_packet      = mxf_write_packet,

  2703.     .write_trailer     = mxf_write_footer,

  2704.     .flags             = AVFMT_NOTIMESTAMPS,

  2705.     .interleave_packet = mxf_interleave,

  2706.     .priv_class        = &mxf_muxer_class,

  2707. };

  2708. 

  2709. AVOutputFormat ff_mxf_d10_muxer = {

  2710.     .name              = "mxf_d10",

  2711.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),

  2712.     .mime_type         = "application/mxf",

  2713.     .priv_data_size    = sizeof(MXFContext),

  2714.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2715.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2716.     .write_header      = mxf_write_header,

  2717.     .write_packet      = mxf_write_packet,

  2718.     .write_trailer     = mxf_write_footer,

  2719.     .flags             = AVFMT_NOTIMESTAMPS,

  2720.     .interleave_packet = mxf_interleave,

  2721.     .priv_class        = &mxf_d10_muxer_class,

  2722. };

  2723. 

  2724. AVOutputFormat ff_mxf_opatom_muxer = {

  2725.     .name              = "mxf_opatom",

  2726.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),

  2727.     .mime_type         = "application/mxf",

  2728.     .extensions        = "mxf",

  2729.     .priv_data_size    = sizeof(MXFContext),

  2730.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2731.     .video_codec       = AV_CODEC_ID_DNXHD,

  2732.     .write_header      = mxf_write_header,

  2733.     .write_packet      = mxf_write_packet,

  2734.     .write_trailer     = mxf_write_footer,

  2735.     .flags             = AVFMT_NOTIMESTAMPS,

  2736.     .interleave_packet = mxf_interleave,

  2737.     .priv_class        = &mxf_opatom_muxer_class,

  2738. };