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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/time_internal.h"

  43. #include "libavcodec/bytestream.h"

  44. #include "libavcodec/dnxhddata.h"

  45. #include "libavcodec/h264.h"

  46. #include "libavcodec/internal.h"

  47. #include "audiointerleave.h"

  48. #include "avformat.h"

  49. #include "avio_internal.h"

  50. #include "internal.h"

  51. #include "mxf.h"

  52. #include "config.h"

  53. 

  54. extern AVOutputFormat ff_mxf_d10_muxer;

  55. extern AVOutputFormat ff_mxf_opatom_muxer;

  56. 

  57. #define EDIT_UNITS_PER_BODY 250

  58. #define KAG_SIZE 512

  59. 

  60. typedef struct MXFLocalTagPair {

  61.     int local_tag;

  62.     UID uid;

  63. } MXFLocalTagPair;

  64. 

  65. typedef struct MXFIndexEntry {

  66.     uint8_t flags;

  67.     uint64_t offset;

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

  69.     uint16_t temporal_ref;

  70. } MXFIndexEntry;

  71. 

  72. typedef struct MXFStreamContext {

  73.     AudioInterleaveContext aic;

  74.     UID track_essence_element_key;

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

  76.     const UID *codec_ul;

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

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

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

  80.     int component_depth;

  81.     int temporal_reordering;

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

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

  84.     int video_bit_rate;

  85. } MXFStreamContext;

  86. 

  87. typedef struct MXFContainerEssenceEntry {

  88.     UID container_ul;

  89.     UID element_ul;

  90.     UID codec_ul;

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

  92. } MXFContainerEssenceEntry;

  93. 

  94. static const struct {

  95.     enum AVCodecID id;

  96.     int index;

  97. } mxf_essence_mappings[] = {

  98.     { AV_CODEC_ID_MPEG2VIDEO, 0 },

  99.     { AV_CODEC_ID_PCM_S24LE,  1 },

  100.     { AV_CODEC_ID_PCM_S16LE,  1 },

  101.     { AV_CODEC_ID_DVVIDEO,   15 },

  102.     { AV_CODEC_ID_DNXHD,     24 },

  103.     { AV_CODEC_ID_JPEG2000,  34 },

  104.     { AV_CODEC_ID_H264,      35 },

  105.     { AV_CODEC_ID_NONE }

  106. };

  107. 

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

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

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

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

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

  113. 

  114. static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {

  115.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },

  116.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  117.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  118.       mxf_write_mpegvideo_desc },

  119.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },

  120.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },

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

  122.       mxf_write_aes3_desc },

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

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

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

  126.       mxf_write_wav_desc },

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

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

  129.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  131.       mxf_write_cdci_desc },

  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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

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

  135.       mxf_write_generic_sound_desc },

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

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

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

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

  140.       mxf_write_cdci_desc },

  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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

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

  144.       mxf_write_generic_sound_desc },

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

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

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

  148.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },

  149.       mxf_write_cdci_desc },

  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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

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

  153.       mxf_write_generic_sound_desc },

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

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

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

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

  158.       mxf_write_cdci_desc },

  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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

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

  162.       mxf_write_generic_sound_desc },

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

  164.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },

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

  166.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },

  167.       mxf_write_cdci_desc },

  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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

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

  171.       mxf_write_generic_sound_desc },

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

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

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

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

  176.       mxf_write_cdci_desc },

  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,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

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

  180.       mxf_write_generic_sound_desc },

  181.     // DV Unknown

  182.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },

  183.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  184.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },

  185.       mxf_write_cdci_desc },

  186.     // DV25 525/60

  187.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },

  188.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  189.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },

  190.       mxf_write_cdci_desc },

  191.     // DV25 625/50

  192.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },

  193.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  194.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },

  195.       mxf_write_cdci_desc },

  196.     // DV50 525/60

  197.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },

  198.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  199.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },

  200.       mxf_write_cdci_desc },

  201.     // DV50 625/50

  202.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },

  203.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  204.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },

  205.       mxf_write_cdci_desc },

  206.     // DV100 1080/60

  207.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },

  208.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  209.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },

  210.       mxf_write_cdci_desc },

  211.     // DV100 1080/50

  212.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },

  213.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  214.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },

  215.       mxf_write_cdci_desc },

  216.     // DV100 720/60

  217.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },

  218.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  219.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },

  220.       mxf_write_cdci_desc },

  221.     // DV100 720/50

  222.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },

  223.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  224.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },

  225.       mxf_write_cdci_desc },

  226.     // DNxHD 1080p 10bit high

  227.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  228.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  229.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },

  230.       mxf_write_cdci_desc },

  231.     // DNxHD 1080p 8bit medium

  232.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  233.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  234.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },

  235.       mxf_write_cdci_desc },

  236.     // DNxHD 1080p 8bit high

  237.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  238.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  239.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },

  240.       mxf_write_cdci_desc },

  241.     // DNxHD 1080i 10bit high

  242.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  243.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  244.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },

  245.       mxf_write_cdci_desc },

  246.     // DNxHD 1080i 8bit medium

  247.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  248.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  249.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },

  250.       mxf_write_cdci_desc },

  251.     // DNxHD 1080i 8bit high

  252.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  253.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  254.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },

  255.       mxf_write_cdci_desc },

  256.     // DNxHD 720p 10bit

  257.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  258.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  259.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },

  260.       mxf_write_cdci_desc },

  261.     // DNxHD 720p 8bit high

  262.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  263.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  264.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },

  265.       mxf_write_cdci_desc },

  266.     // DNxHD 720p 8bit medium

  267.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  268.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  269.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },

  270.       mxf_write_cdci_desc },

  271.     // DNxHD 720p 8bit low

  272.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  273.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  274.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },

  275.       mxf_write_cdci_desc },

  276.     // JPEG2000

  277.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },

  278.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },

  279.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },

  280.       mxf_write_cdci_desc },

  281.     // H.264

  282.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },

  283.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  284.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  285.       mxf_write_mpegvideo_desc },

  286.     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  287.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  288.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  289.       NULL },

  290. };

  291. 

  292. typedef struct MXFContext {

  293.     AVClass *av_class;

  294.     int64_t footer_partition_offset;

  295.     int essence_container_count;

  296.     AVRational time_base;

  297.     int header_written;

  298.     MXFIndexEntry *index_entries;

  299.     unsigned edit_units_count;

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

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

  302.     int last_indexed_edit_unit;

  303.     uint64_t *body_partition_offset;

  304.     unsigned body_partitions_count;

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

  306.     uint64_t duration;

  307.     AVTimecode tc;       ///< timecode context

  308.     AVStream *timecode_track;

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

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

  311.     uint64_t body_offset;

  312.     uint32_t instance_number;

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

  314.     int channel_count;

  315. } MXFContext;

  316. 

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

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

  319. 

  320. /**

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

  322.  */

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

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

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

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

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

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

  329. 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

  330. 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

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

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

  333. 

  334. /**

  335.  * partial key for header metadata

  336.  */

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

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

  339. 

  340. /**

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

  342.  */

  343. static const MXFLocalTagPair mxf_local_tag_batch[] = {

  344.     // preface set

  345.     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */

  346.     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */

  347.     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */

  348.     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */

  349.     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */

  350.     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */

  351.     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */

  352.     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */

  353.     // Identification

  354.     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */

  355.     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */

  356.     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */

  357.     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */

  358.     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */

  359.     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */

  360.     // Content Storage

  361.     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */

  362.     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */

  363.     // Essence Container Data

  364.     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */

  365.     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */

  366.     // Package

  367.     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */

  368.     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */

  369.     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */

  370.     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */

  371.     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */

  372.     // Track

  373.     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */

  374.     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */

  375.     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */

  376.     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */

  377.     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */

  378.     // Sequence

  379.     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */

  380.     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */

  381.     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */

  382.     // Source Clip

  383.     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */

  384.     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */

  385.     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */

  386.     // Timecode Component

  387.     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */

  388.     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */

  389.     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */

  390.     // File Descriptor

  391.     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */

  392.     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */

  393.     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */

  394.     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */

  395.     // Generic Picture Essence Descriptor

  396.     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */

  397.     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */

  398.     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */

  399.     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */

  400.     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */

  401.     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */

  402.     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */

  403.     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */

  404.     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */

  405.     // CDCI Picture Essence Descriptor

  406.     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */

  407.     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */

  408.     // Generic Sound Essence Descriptor

  409.     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */

  410.     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */

  411.     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */

  412.     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */

  413.     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */

  414.     // Index Table Segment

  415.     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */

  416.     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */

  417.     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */

  418.     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */

  419.     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */

  420.     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */

  421.     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */

  422.     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */

  423.     // MPEG video Descriptor

  424.     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */

  425.     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */

  426.     // Wave Audio Essence Descriptor

  427.     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */

  428.     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */

  429. };

  430. 

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

  432. {

  433.     avio_write(pb, uuid_base, 12);

  434.     avio_wb16(pb, type);

  435.     avio_wb16(pb, value);

  436. }

  437. 

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

  439. {

  440.     MXFContext *mxf = s->priv_data;

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

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

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

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

  445. }

  446. 

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

  448. {

  449.     avio_wb32(pb, ref_count);

  450.     avio_wb32(pb, 16);

  451. }

  452. 

  453. static int klv_ber_length(uint64_t len)

  454. {

  455.     if (len < 128)

  456.         return 1;

  457.     else

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

  459. }

  460. 

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

  462. {

  463.     // Determine the best BER size

  464.     int size;

  465.     if (len < 128) {

  466.         //short form

  467.         avio_w8(pb, len);

  468.         return 1;

  469.     }

  470. 

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

  472. 

  473.     // long form

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

  475.     while(size) {

  476.         size--;

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

  478.     }

  479.     return 0;

  480. }

  481. 

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

  483. {

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

  485.     avio_wb24(pb, len);

  486. }

  487. 

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

  489. {

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

  491.     avio_wb64(pb, len);

  492. }

  493. 

  494. /*

  495.  * Get essence container ul index

  496.  */

  497. static int mxf_get_essence_container_ul_index(enum AVCodecID id)

  498. {

  499.     int i;

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

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

  502.             return mxf_essence_mappings[i].index;

  503.     return -1;

  504. }

  505. 

  506. static void mxf_write_primer_pack(AVFormatContext *s)

  507. {

  508.     AVIOContext *pb = s->pb;

  509.     int local_tag_number, i = 0;

  510. 

  511.     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);

  512. 

  513.     avio_write(pb, primer_pack_key, 16);

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

  515. 

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

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

  518. 

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

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

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

  522.     }

  523. }

  524. 

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

  526. {

  527.     avio_wb16(pb, tag);

  528.     avio_wb16(pb, size);

  529. }

  530. 

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

  532. {

  533.     avio_write(pb, header_metadata_key, 13);

  534.     avio_wb24(pb, value);

  535. }

  536. 

  537. static void mxf_free(AVFormatContext *s)

  538. {

  539.     int i;

  540. 

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

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

  543.         av_freep(&st->priv_data);

  544.     }

  545. }

  546. 

  547. static const MXFCodecUL *mxf_get_data_definition_ul(int type)

  548. {

  549.     const MXFCodecUL *uls = ff_mxf_data_definition_uls;

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

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

  552.             break;

  553.         uls++;

  554.     }

  555.     return uls;

  556. }

  557. 

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

  559. #define DESCRIPTOR_COUNT(essence_container_count) \

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

  561. 

  562. static void mxf_write_essence_container_refs(AVFormatContext *s)

  563. {

  564.     MXFContext *c = s->priv_data;

  565.     AVIOContext *pb = s->pb;

  566.     int i;

  567. 

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

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

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

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

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

  573.     }

  574. 

  575.     if (c->essence_container_count > 1)

  576.         avio_write(pb, multiple_desc_ul, 16);

  577. }

  578. 

  579. static void mxf_write_preface(AVFormatContext *s)

  580. {

  581.     MXFContext *mxf = s->priv_data;

  582.     AVIOContext *pb = s->pb;

  583. 

  584.     mxf_write_metadata_key(pb, 0x012f00);

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

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

  587. 

  588.     // write preface set uid

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

  590.     mxf_write_uuid(pb, Preface, 0);

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

  592. 

  593.     // last modified date

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

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

  596. 

  597.     // write version

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

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

  600. 

  601.     // write identification_refs

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

  603.     mxf_write_refs_count(pb, 1);

  604.     mxf_write_uuid(pb, Identification, 0);

  605. 

  606.     // write content_storage_refs

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

  608.     mxf_write_uuid(pb, ContentStorage, 0);

  609. 

  610.     // operational pattern

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

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

  613.         avio_write(pb, opatom_ul, 16);

  614.     else

  615.         avio_write(pb, op1a_ul, 16);

  616. 

  617.     // write essence_container_refs

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

  619.     mxf_write_essence_container_refs(s);

  620. 

  621.     // write dm_scheme_refs

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

  623.     avio_wb64(pb, 0);

  624. }

  625. 

  626. /*

  627.  * Write a local tag containing an ascii string as utf-16

  628.  */

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

  630. {

  631.     int i, size = strlen(value);

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

  633.     for (i = 0; i < size; i++)

  634.         avio_wb16(pb, value[i]);

  635. }

  636. 

  637. static void mxf_write_identification(AVFormatContext *s)

  638. {

  639.     MXFContext *mxf = s->priv_data;

  640.     AVIOContext *pb = s->pb;

  641.     const char *company = "FFmpeg";

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

  643.     const char *version;

  644.     int length;

  645. 

  646.     mxf_write_metadata_key(pb, 0x013000);

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

  648. 

  649.     version = s->flags & AVFMT_FLAG_BITEXACT ?

  650.         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);

  651.     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16

  652.     klv_encode_ber_length(pb, length);

  653. 

  654.     // write uid

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

  656.     mxf_write_uuid(pb, Identification, 0);

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

  658. 

  659.     // write generation uid

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

  661.     mxf_write_uuid(pb, Identification, 1);

  662. 

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

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

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

  666. 

  667.     // write product uid

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

  669.     mxf_write_uuid(pb, Identification, 2);

  670. 

  671.     // modification date

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

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

  674. }

  675. 

  676. static void mxf_write_content_storage(AVFormatContext *s)

  677. {

  678.     AVIOContext *pb = s->pb;

  679. 

  680.     mxf_write_metadata_key(pb, 0x011800);

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

  682.     klv_encode_ber_length(pb, 92);

  683. 

  684.     // write uid

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

  686.     mxf_write_uuid(pb, ContentStorage, 0);

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

  688. 

  689.     // write package reference

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

  691.     mxf_write_refs_count(pb, 2);

  692.     mxf_write_uuid(pb, MaterialPackage, 0);

  693.     mxf_write_uuid(pb, SourcePackage, 0);

  694. 

  695.     // write essence container data

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

  697.     mxf_write_refs_count(pb, 1);

  698.     mxf_write_uuid(pb, EssenceContainerData, 0);

  699. }

  700. 

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

  702. {

  703.     MXFContext *mxf = s->priv_data;

  704.     AVIOContext *pb = s->pb;

  705.     MXFStreamContext *sc = st->priv_data;

  706. 

  707.     mxf_write_metadata_key(pb, 0x013b00);

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

  709.     klv_encode_ber_length(pb, 80);

  710. 

  711.     // write track uid

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

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

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

  715. 

  716.     // write track id

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

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

  719. 

  720.     // write track number

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

  722.     if (type == MaterialPackage)

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

  724.     else

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

  726. 

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

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

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

  730. 

  731.     // write origin

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

  733.     avio_wb64(pb, 0);

  734. 

  735.     // write sequence refs

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

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

  738. }

  739. 

  740. 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 };

  741. 

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

  743. {

  744.     MXFContext *mxf = s->priv_data;

  745.     AVIOContext *pb = s->pb;

  746. 

  747.     // find data define uls

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

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

  750.         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);

  751.     else {

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

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

  754.     }

  755. 

  756.     // write duration

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

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

  759. }

  760. 

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

  762. {

  763.     MXFContext *mxf = s->priv_data;

  764.     AVIOContext *pb = s->pb;

  765.     enum MXFMetadataSetType component;

  766. 

  767.     mxf_write_metadata_key(pb, 0x010f00);

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

  769.     klv_encode_ber_length(pb, 80);

  770. 

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

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

  773. 

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

  775.     mxf_write_common_fields(s, st);

  776. 

  777.     // write structural component

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

  779.     mxf_write_refs_count(pb, 1);

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

  781.         component = TimecodeComponent;

  782.     else

  783.         component = SourceClip;

  784.     if (type == SourcePackage)

  785.         component += TypeBottom;

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

  787. }

  788. 

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

  790. {

  791.     MXFContext *mxf = s->priv_data;

  792.     AVIOContext *pb = s->pb;

  793. 

  794.     mxf_write_metadata_key(pb, 0x011400);

  795.     klv_encode_ber_length(pb, 75);

  796. 

  797.     // UID

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

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

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

  801. 

  802.     mxf_write_common_fields(s, st);

  803. 

  804.     // Start Time Code

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

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

  807. 

  808.     // Rounded Time Code Base

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

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

  811. 

  812.     // Drop Frame

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

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

  815. }

  816. 

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

  818. {

  819.     AVIOContext *pb = s->pb;

  820.     int i;

  821. 

  822.     mxf_write_metadata_key(pb, 0x011100);

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

  824.     klv_encode_ber_length(pb, 108);

  825. 

  826.     // write uid

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

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

  829. 

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

  831.     mxf_write_common_fields(s, st);

  832. 

  833.     // write start_position

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

  835.     avio_wb64(pb, 0);

  836. 

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

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

  839.     if (type == SourcePackage) {

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

  841.             avio_wb64(pb, 0);

  842.     } else

  843.         mxf_write_umid(s, 1);

  844. 

  845.     // write source track id

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

  847.     if (type == SourcePackage)

  848.         avio_wb32(pb, 0);

  849.     else

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

  851. }

  852. 

  853. static void mxf_write_multi_descriptor(AVFormatContext *s)

  854. {

  855.     MXFContext *mxf = s->priv_data;

  856.     AVIOContext *pb = s->pb;

  857.     const uint8_t *ul;

  858.     int i;

  859. 

  860.     mxf_write_metadata_key(pb, 0x014400);

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

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

  863. 

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

  865.     mxf_write_uuid(pb, MultipleDescriptor, 0);

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

  867. 

  868.     // write sample rate

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

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

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

  872. 

  873.     // write essence container ul

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

  875.     if (mxf->essence_container_count > 1)

  876.         ul = multiple_desc_ul;

  877.     else {

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

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

  880.     }

  881.     avio_write(pb, ul, 16);

  882. 

  883.     // write sub descriptor refs

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

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

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

  887.         mxf_write_uuid(pb, SubDescriptor, i);

  888. }

  889. 

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

  891. {

  892.     MXFContext *mxf = s->priv_data;

  893.     MXFStreamContext *sc = st->priv_data;

  894.     AVIOContext *pb = s->pb;

  895. 

  896.     avio_write(pb, key, 16);

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

  898. 

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

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

  901. 

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

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

  904. 

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

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

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

  908. 

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

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

  911. }

  912. 

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

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

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

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

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

  918. 

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

  920. {

  921.     MXFStreamContext *sc = st->priv_data;

  922.     AVIOContext *pb = s->pb;

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

  924.     int display_height;

  925.     int f1, f2;

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

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

  928.         desc_size += 5;

  929. 

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

  931. 

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

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

  934. 

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

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

  937. 

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

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

  940. 

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

  942.         display_height = 576;

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

  944.         display_height = 486;

  945.     else

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

  947. 

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

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

  950. 

  951.     // component depth

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

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

  954. 

  955.     // horizontal subsampling

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

  957.     avio_wb32(pb, 2);

  958. 

  959.     // frame layout

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

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

  962. 

  963.     // video line map

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

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

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

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

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

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

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

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

  972.     }

  973. 

  974.     if (!sc->interlaced) {

  975.         f2  = 0;

  976.         f1 *= 2;

  977.     }

  978. 

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

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

  981.     avio_wb32(pb, 4);

  982.     avio_wb32(pb, f1);

  983.     if (sc->interlaced)

  984.         avio_wb32(pb, f2);

  985. 

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

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

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

  989. 

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

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

  992. 

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

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

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

  996.     }

  997. 

  998. }

  999. 

  1000. static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)

  1001. {

  1002.     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);

  1003. }

  1004. 

  1005. static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)

  1006. {

  1007.     AVIOContext *pb = s->pb;

  1008.     MXFStreamContext *sc = st->priv_data;

  1009.     int profile_and_level = (st->codec->profile<<4) | st->codec->level;

  1010. 

  1011.     if (st->codec->codec_id != AV_CODEC_ID_H264) {

  1012.         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);

  1013. 

  1014.         // bit rate

  1015.         mxf_write_local_tag(pb, 4, 0x8000);

  1016.         avio_wb32(pb, sc->video_bit_rate);

  1017. 

  1018.         // profile and level

  1019.         mxf_write_local_tag(pb, 1, 0x8007);

  1020.         if (!st->codec->profile)

  1021.             profile_and_level |= 0x80; // escape bit

  1022.         avio_w8(pb, profile_and_level);

  1023.     } else {

  1024.         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);

  1025.     }

  1026. }

  1027. 

  1028. static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1029. {

  1030.     AVIOContext *pb = s->pb;

  1031.     MXFContext *mxf = s->priv_data;

  1032.     int show_warnings = !mxf->footer_partition_offset;

  1033. 

  1034.     mxf_write_generic_desc(s, st, key, size+5+12+8+8);

  1035. 

  1036.     // audio locked

  1037.     mxf_write_local_tag(pb, 1, 0x3D02);

  1038.     avio_w8(pb, 1);

  1039. 

  1040.     // write audio sampling rate

  1041.     mxf_write_local_tag(pb, 8, 0x3D03);

  1042.     avio_wb32(pb, st->codec->sample_rate);

  1043.     avio_wb32(pb, 1);

  1044. 

  1045.     mxf_write_local_tag(pb, 4, 0x3D07);

  1046.     if (mxf->channel_count == -1) {

  1047.         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))

  1048.             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");

  1049.         avio_wb32(pb, st->codec->channels);

  1050.     } else if (s->oformat == &ff_mxf_d10_muxer) {

  1051.         if (show_warnings && (mxf->channel_count < st->codec->channels))

  1052.             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");

  1053.         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))

  1054.             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");

  1055.         avio_wb32(pb, mxf->channel_count);

  1056.     } else {

  1057.         if (show_warnings && mxf->channel_count != -1)

  1058.             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");

  1059.         avio_wb32(pb, st->codec->channels);

  1060.     }

  1061. 

  1062.     mxf_write_local_tag(pb, 4, 0x3D01);

  1063.     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));

  1064. }

  1065. 

  1066. static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1067. {

  1068.     AVIOContext *pb = s->pb;

  1069. 

  1070.     mxf_write_generic_sound_common(s, st, key, size+6+8);

  1071. 

  1072.     mxf_write_local_tag(pb, 2, 0x3D0A);

  1073.     avio_wb16(pb, st->codec->block_align);

  1074. 

  1075.     // avg bytes per sec

  1076.     mxf_write_local_tag(pb, 4, 0x3D09);

  1077.     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);

  1078. }

  1079. 

  1080. static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)

  1081. {

  1082.     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);

  1083. }

  1084. 

  1085. static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)

  1086. {

  1087.     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);

  1088. }

  1089. 

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

  1091. {

  1092.     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);

  1093. }

  1094. 

  1095. static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)

  1096. {

  1097.     MXFContext *mxf = s->priv_data;

  1098.     AVIOContext *pb = s->pb;

  1099.     int i, track_count = s->nb_streams+1;

  1100. 

  1101.     if (type == MaterialPackage) {

  1102.         mxf_write_metadata_key(pb, 0x013600);

  1103.         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);

  1104.         klv_encode_ber_length(pb, 92 + 16*track_count);

  1105.     } else {

  1106.         mxf_write_metadata_key(pb, 0x013700);

  1107.         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);

  1108.         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference

  1109.     }

  1110. 

  1111.     // write uid

  1112.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1113.     mxf_write_uuid(pb, type, 0);

  1114.     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);

  1115.     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);

  1116. 

  1117.     // write package umid

  1118.     mxf_write_local_tag(pb, 32, 0x4401);

  1119.     mxf_write_umid(s, type == SourcePackage);

  1120.     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);

  1121. 

  1122.     // package creation date

  1123.     mxf_write_local_tag(pb, 8, 0x4405);

  1124.     avio_wb64(pb, mxf->timestamp);

  1125. 

  1126.     // package modified date

  1127.     mxf_write_local_tag(pb, 8, 0x4404);

  1128.     avio_wb64(pb, mxf->timestamp);

  1129. 

  1130.     // write track refs

  1131.     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);

  1132.     mxf_write_refs_count(pb, track_count);

  1133.     mxf_write_uuid(pb, type == MaterialPackage ? Track :

  1134.                    Track + TypeBottom, -1); // timecode track

  1135.     for (i = 0; i < s->nb_streams; i++)

  1136.         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);

  1137. 

  1138.     // write multiple descriptor reference

  1139.     if (type == SourcePackage) {

  1140.         mxf_write_local_tag(pb, 16, 0x4701);

  1141.         if (s->nb_streams > 1) {

  1142.             mxf_write_uuid(pb, MultipleDescriptor, 0);

  1143.             mxf_write_multi_descriptor(s);

  1144.         } else

  1145.             mxf_write_uuid(pb, SubDescriptor, 0);

  1146.     }

  1147. 

  1148.     // write timecode track

  1149.     mxf_write_track(s, mxf->timecode_track, type);

  1150.     mxf_write_sequence(s, mxf->timecode_track, type);

  1151.     mxf_write_timecode_component(s, mxf->timecode_track, type);

  1152. 

  1153.     for (i = 0; i < s->nb_streams; i++) {

  1154.         AVStream *st = s->streams[i];

  1155.         mxf_write_track(s, st, type);

  1156.         mxf_write_sequence(s, st, type);

  1157.         mxf_write_structural_component(s, st, type);

  1158. 

  1159.         if (type == SourcePackage) {

  1160.             MXFStreamContext *sc = st->priv_data;

  1161.             mxf_essence_container_uls[sc->index].write_desc(s, st);

  1162.         }

  1163.     }

  1164. }

  1165. 

  1166. static int mxf_write_essence_container_data(AVFormatContext *s)

  1167. {

  1168.     AVIOContext *pb = s->pb;

  1169. 

  1170.     mxf_write_metadata_key(pb, 0x012300);

  1171.     klv_encode_ber_length(pb, 72);

  1172. 

  1173.     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID

  1174.     mxf_write_uuid(pb, EssenceContainerData, 0);

  1175. 

  1176.     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID

  1177.     mxf_write_umid(s, 1);

  1178. 

  1179.     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID

  1180.     avio_wb32(pb, 1);

  1181. 

  1182.     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID

  1183.     avio_wb32(pb, 2);

  1184. 

  1185.     return 0;

  1186. }

  1187. 

  1188. static int mxf_write_header_metadata_sets(AVFormatContext *s)

  1189. {

  1190.     mxf_write_preface(s);

  1191.     mxf_write_identification(s);

  1192.     mxf_write_content_storage(s);

  1193.     mxf_write_package(s, MaterialPackage);

  1194.     mxf_write_package(s, SourcePackage);

  1195.     mxf_write_essence_container_data(s);

  1196.     return 0;

  1197. }

  1198. 

  1199. static unsigned klv_fill_size(uint64_t size)

  1200. {

  1201.     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));

  1202.     if (pad < 20) // smallest fill item possible

  1203.         return pad + KAG_SIZE;

  1204.     else

  1205.         return pad & (KAG_SIZE-1);

  1206. }

  1207. 

  1208. static void mxf_write_index_table_segment(AVFormatContext *s)

  1209. {

  1210.     MXFContext *mxf = s->priv_data;

  1211.     AVIOContext *pb = s->pb;

  1212.     int i, j, temporal_reordering = 0;

  1213.     int key_index = mxf->last_key_index;

  1214. 

  1215.     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);

  1216. 

  1217.     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)

  1218.         return;

  1219. 

  1220.     avio_write(pb, index_table_segment_key, 16);

  1221. 

  1222.     if (mxf->edit_unit_byte_count) {

  1223.         klv_encode_ber_length(pb, 80);

  1224.     } else {

  1225.         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +

  1226.                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));

  1227.     }

  1228. 

  1229.     // instance id

  1230.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1231.     mxf_write_uuid(pb, IndexTableSegment, 0);

  1232. 

  1233.     // index edit rate

  1234.     mxf_write_local_tag(pb, 8, 0x3F0B);

  1235.     avio_wb32(pb, mxf->time_base.den);

  1236.     avio_wb32(pb, mxf->time_base.num);

  1237. 

  1238.     // index start position

  1239.     mxf_write_local_tag(pb, 8, 0x3F0C);

  1240.     avio_wb64(pb, mxf->last_indexed_edit_unit);

  1241. 

  1242.     // index duration

  1243.     mxf_write_local_tag(pb, 8, 0x3F0D);

  1244.     if (mxf->edit_unit_byte_count)

  1245.         avio_wb64(pb, 0); // index table covers whole container

  1246.     else

  1247.         avio_wb64(pb, mxf->edit_units_count);

  1248. 

  1249.     // edit unit byte count

  1250.     mxf_write_local_tag(pb, 4, 0x3F05);

  1251.     avio_wb32(pb, mxf->edit_unit_byte_count);

  1252. 

  1253.     // index sid

  1254.     mxf_write_local_tag(pb, 4, 0x3F06);

  1255.     avio_wb32(pb, 2);

  1256. 

  1257.     // body sid

  1258.     mxf_write_local_tag(pb, 4, 0x3F07);

  1259.     avio_wb32(pb, 1);

  1260. 

  1261.     if (!mxf->edit_unit_byte_count) {

  1262.         // real slice count - 1

  1263.         mxf_write_local_tag(pb, 1, 0x3F08);

  1264.         avio_w8(pb, mxf->slice_count);

  1265. 

  1266.         // delta entry array

  1267.         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);

  1268.         avio_wb32(pb, s->nb_streams+1); // num of entries

  1269.         avio_wb32(pb, 6);               // size of one entry

  1270.         // write system item delta entry

  1271.         avio_w8(pb, 0);

  1272.         avio_w8(pb, 0); // slice entry

  1273.         avio_wb32(pb, 0); // element delta

  1274.         for (i = 0; i < s->nb_streams; i++) {

  1275.             AVStream *st = s->streams[i];

  1276.             MXFStreamContext *sc = st->priv_data;

  1277.             avio_w8(pb, sc->temporal_reordering);

  1278.             if (sc->temporal_reordering)

  1279.                 temporal_reordering = 1;

  1280.             if (i == 0) { // video track

  1281.                 avio_w8(pb, 0); // slice number

  1282.                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill

  1283.             } else { // audio track

  1284.                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;

  1285.                 audio_frame_size += klv_fill_size(audio_frame_size);

  1286.                 avio_w8(pb, 1);

  1287.                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta

  1288.             }

  1289.         }

  1290. 

  1291.         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);

  1292.         avio_wb32(pb, mxf->edit_units_count);  // num of entries

  1293.         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry

  1294. 

  1295.         for (i = 0; i < mxf->edit_units_count; i++) {

  1296.             int temporal_offset = 0;

  1297. 

  1298.             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame

  1299.                 mxf->last_key_index = key_index;

  1300.                 key_index = i;

  1301.             }

  1302. 

  1303.             if (temporal_reordering) {

  1304.                 int pic_num_in_gop = i - key_index;

  1305.                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {

  1306.                     for (j = key_index; j < mxf->edit_units_count; j++) {

  1307.                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)

  1308.                             break;

  1309.                     }

  1310.                     if (j == mxf->edit_units_count)

  1311.                         av_log(s, AV_LOG_WARNING, "missing frames\n");

  1312.                     temporal_offset = j - key_index - pic_num_in_gop;

  1313.                 }

  1314.             }

  1315.             avio_w8(pb, temporal_offset);

  1316. 

  1317.             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction

  1318.                 avio_w8(pb, mxf->last_key_index - i);

  1319.             } else {

  1320.                 avio_w8(pb, key_index - i); // key frame offset

  1321.                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward

  1322.                     mxf->last_key_index = key_index;

  1323.             }

  1324. 

  1325.             if (!(mxf->index_entries[i].flags & 0x33) && // I frame

  1326.                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)

  1327.                 mxf->index_entries[i].flags |= 0x80; // random access

  1328.             avio_w8(pb, mxf->index_entries[i].flags);

  1329.             // stream offset

  1330.             avio_wb64(pb, mxf->index_entries[i].offset);

  1331.             if (s->nb_streams > 1)

  1332.                 avio_wb32(pb, mxf->index_entries[i].slice_offset);

  1333.         }

  1334. 

  1335.         mxf->last_key_index = key_index - mxf->edit_units_count;

  1336.         mxf->last_indexed_edit_unit += mxf->edit_units_count;

  1337.         mxf->edit_units_count = 0;

  1338.     }

  1339. }

  1340. 

  1341. static void mxf_write_klv_fill(AVFormatContext *s)

  1342. {

  1343.     unsigned pad = klv_fill_size(avio_tell(s->pb));

  1344.     if (pad) {

  1345.         avio_write(s->pb, klv_fill_key, 16);

  1346.         pad -= 16 + 4;

  1347.         klv_encode_ber4_length(s->pb, pad);

  1348.         ffio_fill(s->pb, 0, pad);

  1349.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  1350.     }

  1351. }

  1352. 

  1353. static int mxf_write_partition(AVFormatContext *s, int bodysid,

  1354.                                 int indexsid,

  1355.                                 const uint8_t *key, int write_metadata)

  1356. {

  1357.     MXFContext *mxf = s->priv_data;

  1358.     AVIOContext *pb = s->pb;

  1359.     int64_t header_byte_count_offset;

  1360.     unsigned index_byte_count = 0;

  1361.     uint64_t partition_offset = avio_tell(pb);

  1362.     int err;

  1363. 

  1364.     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)

  1365.         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +

  1366.             12+mxf->edit_units_count*(11+mxf->slice_count*4);

  1367.     else if (mxf->edit_unit_byte_count && indexsid)

  1368.         index_byte_count = 80;

  1369. 

  1370.     if (index_byte_count) {

  1371.         // add encoded ber length

  1372.         index_byte_count += 16 + klv_ber_length(index_byte_count);

  1373.         index_byte_count += klv_fill_size(index_byte_count);

  1374.     }

  1375. 

  1376.     if (key && !memcmp(key, body_partition_key, 16)) {

  1377.         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,

  1378.                                      sizeof(*mxf->body_partition_offset))) < 0) {

  1379.             mxf->body_partitions_count = 0;

  1380.             return err;

  1381.         }

  1382.         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;

  1383.     }

  1384. 

  1385.     // write klv

  1386.     if (key)

  1387.         avio_write(pb, key, 16);

  1388.     else

  1389.         avio_write(pb, body_partition_key, 16);

  1390. 

  1391.     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));

  1392. 

  1393.     // write partition value

  1394.     avio_wb16(pb, 1); // majorVersion

  1395.     avio_wb16(pb, 2); // minorVersion

  1396.     avio_wb32(pb, KAG_SIZE); // KAGSize

  1397. 

  1398.     avio_wb64(pb, partition_offset); // ThisPartition

  1399. 

  1400.     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)

  1401.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition

  1402.     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)

  1403.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition

  1404.     else

  1405.         avio_wb64(pb, 0);

  1406. 

  1407.     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition

  1408. 

  1409.     // set offset

  1410.     header_byte_count_offset = avio_tell(pb);

  1411.     avio_wb64(pb, 0); // headerByteCount, update later

  1412. 

  1413.     // indexTable

  1414.     avio_wb64(pb, index_byte_count); // indexByteCount

  1415.     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID

  1416. 

  1417.     // BodyOffset

  1418.     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)

  1419.         avio_wb64(pb, mxf->body_offset);

  1420.     else

  1421.         avio_wb64(pb, 0);

  1422. 

  1423.     avio_wb32(pb, bodysid); // bodySID

  1424. 

  1425.     // operational pattern

  1426.     if (s->oformat == &ff_mxf_opatom_muxer)

  1427.         avio_write(pb, opatom_ul, 16);

  1428.     else

  1429.         avio_write(pb, op1a_ul, 16);

  1430. 

  1431.     // essence container

  1432.     mxf_write_essence_container_refs(s);

  1433. 

  1434.     if (write_metadata) {

  1435.         // mark the start of the headermetadata and calculate metadata size

  1436.         int64_t pos, start;

  1437.         unsigned header_byte_count;

  1438. 

  1439.         mxf_write_klv_fill(s);

  1440.         start = avio_tell(s->pb);

  1441.         mxf_write_primer_pack(s);

  1442.         mxf_write_header_metadata_sets(s);

  1443.         pos = avio_tell(s->pb);

  1444.         header_byte_count = pos - start + klv_fill_size(pos);

  1445. 

  1446.         // update header_byte_count

  1447.         avio_seek(pb, header_byte_count_offset, SEEK_SET);

  1448.         avio_wb64(pb, header_byte_count);

  1449.         avio_seek(pb, pos, SEEK_SET);

  1450.     }

  1451. 

  1452.     if(key)

  1453.         avio_flush(pb);

  1454. 

  1455.     return 0;

  1456. }

  1457. 

  1458. static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,

  1459. AVPacket *pkt)

  1460. {

  1461.     MXFContext *mxf = s->priv_data;

  1462.     MXFStreamContext *sc = st->priv_data;

  1463.     int i, cid;

  1464.     uint8_t* header_cid;

  1465.     int frame_size = 0;

  1466. 

  1467.     if (mxf->header_written)

  1468.         return 1;

  1469. 

  1470.     if (pkt->size < 43)

  1471.         return -1;

  1472. 

  1473.     header_cid = pkt->data + 0x28;

  1474.     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];

  1475. 

  1476.     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)

  1477.         return -1;

  1478. 

  1479.     switch (cid) {

  1480.     case 1235:

  1481.         sc->index = 24;

  1482.         sc->component_depth = 10;

  1483.         break;

  1484.     case 1237:

  1485.         sc->index = 25;

  1486.         break;

  1487.     case 1238:

  1488.         sc->index = 26;

  1489.         break;

  1490.     case 1241:

  1491.         sc->index = 27;

  1492.         sc->component_depth = 10;

  1493.         break;

  1494.     case 1242:

  1495.         sc->index = 28;

  1496.         break;

  1497.     case 1243:

  1498.         sc->index = 29;

  1499.         break;

  1500.     case 1250:

  1501.         sc->index = 30;

  1502.         sc->component_depth = 10;

  1503.         break;

  1504.     case 1251:

  1505.         sc->index = 31;

  1506.         break;

  1507.     case 1252:

  1508.         sc->index = 32;

  1509.         break;

  1510.     case 1253:

  1511.         sc->index = 33;

  1512.         break;

  1513.     default:

  1514.         return -1;

  1515.     }

  1516. 

  1517.     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  1518.     sc->aspect_ratio = (AVRational){ 16, 9 };

  1519. 

  1520.     if(s->oformat == &ff_mxf_opatom_muxer){

  1521.         mxf->edit_unit_byte_count = frame_size;

  1522.         return 1;

  1523.     }

  1524. 

  1525.     mxf->edit_unit_byte_count = KAG_SIZE;

  1526.     for (i = 0; i < s->nb_streams; i++) {

  1527.         AVStream *st = s->streams[i];

  1528.         MXFStreamContext *sc = st->priv_data;

  1529.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1530.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1531.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1532.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1533.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1534.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1535.         }

  1536.     }

  1537. 

  1538.     return 1;

  1539. }

  1540. 

  1541. static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1542. {

  1543.     MXFContext *mxf = s->priv_data;

  1544.     MXFStreamContext *sc = st->priv_data;

  1545.     uint8_t *vs_pack, *vsc_pack;

  1546.     int i, ul_index, frame_size, stype, pal;

  1547. 

  1548.     if (mxf->header_written)

  1549.         return 1;

  1550. 

  1551.     // Check for minimal frame size

  1552.     if (pkt->size < 120000)

  1553.         return -1;

  1554. 

  1555.     vs_pack  = pkt->data + 80*5 + 48;

  1556.     vsc_pack = pkt->data + 80*5 + 53;

  1557.     stype    = vs_pack[3] & 0x1f;

  1558.     pal      = (vs_pack[3] >> 5) & 0x1;

  1559. 

  1560.     if ((vs_pack[2] & 0x07) == 0x02)

  1561.         sc->aspect_ratio = (AVRational){ 16, 9 };

  1562.     else

  1563.         sc->aspect_ratio = (AVRational){ 4, 3 };

  1564. 

  1565.     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;

  1566.     // TODO: fix dv encoder to set proper FF/FS value in VSC pack

  1567.     // and set field dominance accordingly

  1568.     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);

  1569. 

  1570.     switch (stype) {

  1571.     case 0x18: // DV100 720p

  1572.         ul_index = 6 + pal;

  1573.         frame_size = pal ? 288000 : 240000;

  1574.         if (sc->interlaced) {

  1575.             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");

  1576.             sc->interlaced = 0;

  1577.         }

  1578.         break;

  1579.     case 0x14: // DV100 1080i

  1580.         ul_index = 4 + pal;

  1581.         frame_size = pal ? 576000 : 480000;

  1582.         break;

  1583.     case 0x04: // DV50

  1584.         ul_index = 2 + pal;

  1585.         frame_size = pal ? 288000 : 240000;

  1586.         break;

  1587.     default: // DV25

  1588.         ul_index = 0 + pal;

  1589.         frame_size = pal ? 144000 : 120000;

  1590.     }

  1591. 

  1592.     sc->index = ul_index + 16;

  1593.     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;

  1594. 

  1595.     if(s->oformat == &ff_mxf_opatom_muxer) {

  1596.         mxf->edit_unit_byte_count = frame_size;

  1597.         return 1;

  1598.     }

  1599. 

  1600.     mxf->edit_unit_byte_count = KAG_SIZE;

  1601.     for (i = 0; i < s->nb_streams; i++) {

  1602.         AVStream *st = s->streams[i];

  1603.         MXFStreamContext *sc = st->priv_data;

  1604.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1605.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1606.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1607.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1608.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1609.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1610.         }

  1611.     }

  1612. 

  1613.     return 1;

  1614. }

  1615. 

  1616. static const struct {

  1617.     UID uid;

  1618.     int frame_size;

  1619.     int profile;

  1620.     uint8_t interlaced;

  1621. } mxf_h264_codec_uls[] = {

  1622.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra

  1623.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60

  1624.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50

  1625.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30

  1626.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25

  1627.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60

  1628.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50

  1629.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra

  1630.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60

  1631.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50

  1632.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30

  1633.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25

  1634.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60

  1635.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50

  1636. };

  1637. 

  1638. static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,

  1639.                                 AVPacket *pkt, MXFIndexEntry *e)

  1640. {

  1641.     MXFContext *mxf = s->priv_data;

  1642.     MXFStreamContext *sc = st->priv_data;

  1643.     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);

  1644.     const uint8_t *buf = pkt->data;

  1645.     const uint8_t *buf_end = pkt->data + pkt->size;

  1646.     uint32_t state = -1;

  1647.     int extra_size = 512; // support AVC Intra files without SPS/PPS header

  1648.     int i, frame_size;

  1649.     uint8_t uid_found;

  1650. 

  1651.     if (pkt->size > extra_size)

  1652.         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header

  1653. 

  1654.     for (;;) {

  1655.         buf = avpriv_find_start_code(buf, buf_end, &state);

  1656.         if (buf >= buf_end)

  1657.             break;

  1658.         --buf;

  1659.         switch (state & 0x1f) {

  1660.         case NAL_SPS:

  1661.             st->codec->profile = buf[1];

  1662.             e->flags |= 0x40;

  1663.             break;

  1664.         case NAL_PPS:

  1665.             if (e->flags & 0x40) { // sequence header present

  1666.                 e->flags |= 0x80; // random access

  1667.                 extra_size = 0;

  1668.                 buf = buf_end;

  1669.             }

  1670.             break;

  1671.         default:

  1672.             break;

  1673.         }

  1674.     }

  1675. 

  1676.     if (mxf->header_written)

  1677.         return 1;

  1678. 

  1679.     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD

  1680.     sc->component_depth = 10; // AVC Intra is always 10 Bit

  1681.     sc->interlaced = st->codec->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;

  1682.     if (sc->interlaced)

  1683.         sc->field_dominance = 1; // top field first is mandatory for AVC Intra

  1684. 

  1685.     uid_found = 0;

  1686.     frame_size = pkt->size + extra_size;

  1687.     for (i = 0; i < mxf_h264_num_codec_uls; i++) {

  1688.         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {

  1689.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  1690.             return 1;

  1691.         } else if (st->codec->profile == mxf_h264_codec_uls[i].profile) {

  1692.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  1693.             uid_found = 1;

  1694.         }

  1695.     }

  1696. 

  1697.     if (!uid_found) {

  1698.         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");

  1699.         return 0;

  1700.     }

  1701. 

  1702.     return 1;

  1703. }

  1704. 

  1705. static const UID mxf_mpeg2_codec_uls[] = {

  1706.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame

  1707.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP

  1708.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame

  1709.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP

  1710.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame

  1711.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP

  1712.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame

  1713.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP

  1714.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame

  1715.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP

  1716. };

  1717. 

  1718. static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)

  1719. {

  1720.     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;

  1721. 

  1722.     if (avctx->profile == 4) { // Main

  1723.         if (avctx->level == 8) // Main

  1724.             return &mxf_mpeg2_codec_uls[0+long_gop];

  1725.         else if (avctx->level == 4) // High

  1726.             return &mxf_mpeg2_codec_uls[4+long_gop];

  1727.         else if (avctx->level == 6) // High 14

  1728.             return &mxf_mpeg2_codec_uls[8+long_gop];

  1729.     } else if (avctx->profile == 0) { // 422

  1730.         if (avctx->level == 5) // Main

  1731.             return &mxf_mpeg2_codec_uls[2+long_gop];

  1732.         else if (avctx->level == 2) // High

  1733.             return &mxf_mpeg2_codec_uls[6+long_gop];

  1734.     }

  1735.     return NULL;

  1736. }

  1737. 

  1738. static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,

  1739.                                  AVPacket *pkt, MXFIndexEntry *e)

  1740. {

  1741.     MXFStreamContext *sc = st->priv_data;

  1742.     uint32_t c = -1;

  1743.     int i;

  1744. 

  1745.     for(i = 0; i < pkt->size - 4; i++) {

  1746.         c = (c<<8) + pkt->data[i];

  1747.         if (c == 0x1b5) {

  1748.             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext

  1749.                 st->codec->profile = pkt->data[i+1] & 0x07;

  1750.                 st->codec->level   = pkt->data[i+2] >> 4;

  1751.             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext

  1752.                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame

  1753.                 if (sc->interlaced)

  1754.                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first

  1755.                 break;

  1756.             }

  1757.         } else if (c == 0x1b8) { // gop

  1758.             if (pkt->data[i+4]>>6 & 0x01) { // closed

  1759.                 sc->closed_gop = 1;

  1760.                 if (e->flags & 0x40) // sequence header present

  1761.                     e->flags |= 0x80; // random access

  1762.             }

  1763.         } else if (c == 0x1b3) { // seq

  1764.             e->flags |= 0x40;

  1765.             switch ((pkt->data[i+4]>>4) & 0xf) {

  1766.             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;

  1767.             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;

  1768.             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;

  1769.             default:

  1770.                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,

  1771.                           st->codec->width, st->codec->height, 1024*1024);

  1772.             }

  1773.         } else if (c == 0x100) { // pic

  1774.             int pict_type = (pkt->data[i+2]>>3) & 0x07;

  1775.             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);

  1776.             if (pict_type == 2) { // P frame

  1777.                 e->flags |= 0x22;

  1778.                 sc->closed_gop = 0; // reset closed gop, don't matter anymore

  1779.             } else if (pict_type == 3) { // B frame

  1780.                 if (sc->closed_gop)

  1781.                     e->flags |= 0x13; // only backward prediction

  1782.                 else

  1783.                     e->flags |= 0x33;

  1784.                 sc->temporal_reordering = -1;

  1785.             } else if (!pict_type) {

  1786.                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");

  1787.                 return 0;

  1788.             }

  1789.         }

  1790.     }

  1791.     if (s->oformat != &ff_mxf_d10_muxer)

  1792.         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);

  1793.     return !!sc->codec_ul;

  1794. }

  1795. 

  1796. static uint64_t mxf_parse_timestamp(time_t timestamp)

  1797. {

  1798.     struct tm tmbuf;

  1799.     struct tm *time = gmtime_r(&timestamp, &tmbuf);

  1800.     if (!time)

  1801.         return 0;

  1802.     return (uint64_t)(time->tm_year+1900) << 48 |

  1803.            (uint64_t)(time->tm_mon+1)     << 40 |

  1804.            (uint64_t) time->tm_mday       << 32 |

  1805.                       time->tm_hour       << 24 |

  1806.                       time->tm_min        << 16 |

  1807.                       time->tm_sec        << 8;

  1808. }

  1809. 

  1810. static void mxf_gen_umid(AVFormatContext *s)

  1811. {

  1812.     MXFContext *mxf = s->priv_data;

  1813.     uint32_t seed = av_get_random_seed();

  1814.     uint64_t umid = seed + 0x5294713400000000LL;

  1815. 

  1816.     AV_WB64(mxf->umid  , umid);

  1817.     AV_WB64(mxf->umid+8, umid>>8);

  1818. 

  1819.     mxf->instance_number = seed & 0xFFFFFF;

  1820. }

  1821. 

  1822. static int mxf_write_header(AVFormatContext *s)

  1823. {

  1824.     MXFContext *mxf = s->priv_data;

  1825.     int i, ret;

  1826.     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};

  1827.     const MXFSamplesPerFrame *spf = NULL;

  1828.     AVDictionaryEntry *t;

  1829.     int64_t timestamp = 0;

  1830.     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);

  1831. 

  1832.     if (!s->nb_streams)

  1833.         return -1;

  1834. 

  1835.     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1){

  1836.         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");

  1837.         return -1;

  1838.     }

  1839. 

  1840.     for (i = 0; i < s->nb_streams; i++) {

  1841.         AVStream *st = s->streams[i];

  1842.         MXFStreamContext *sc = av_mallocz(sizeof(*sc));

  1843.         if (!sc)

  1844.             return AVERROR(ENOMEM);

  1845.         st->priv_data = sc;

  1846. 

  1847.         if ((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) {

  1848.             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");

  1849.             return -1;

  1850.         }

  1851. 

  1852.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1853.             // TODO: should be avg_frame_rate

  1854.             AVRational rate, tbc = st->time_base;

  1855.             // Default component depth to 8

  1856.             sc->component_depth = 8;

  1857.             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;

  1858.             spf = ff_mxf_get_samples_per_frame(s, tbc);

  1859.             if (!spf) {

  1860.                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",

  1861.                        tbc.den, tbc.num);

  1862.                 return AVERROR(EINVAL);

  1863.             }

  1864.             mxf->time_base = spf->time_base;

  1865.             rate = av_inv_q(mxf->time_base);

  1866.             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);

  1867.             if (!tcr)

  1868.                 tcr = av_dict_get(st->metadata, "timecode", NULL, 0);

  1869.             if (tcr)

  1870.                 ret = av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);

  1871.             else

  1872.                 ret = av_timecode_init(&mxf->tc, rate, 0, 0, s);

  1873.             if (ret < 0)

  1874.                 return ret;

  1875.             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;

  1876.             if (s->oformat == &ff_mxf_d10_muxer) {

  1877.                 if (sc->video_bit_rate == 50000000) {

  1878.                     if (mxf->time_base.den == 25) sc->index = 3;

  1879.                     else                          sc->index = 5;

  1880.                 } else if (sc->video_bit_rate == 40000000) {

  1881.                     if (mxf->time_base.den == 25) sc->index = 7;

  1882.                     else                          sc->index = 9;

  1883.                 } else if (sc->video_bit_rate == 30000000) {

  1884.                     if (mxf->time_base.den == 25) sc->index = 11;

  1885.                     else                          sc->index = 13;

  1886.                 } else {

  1887.                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");

  1888.                     return -1;

  1889.                 }

  1890. 

  1891.                 mxf->edit_unit_byte_count = KAG_SIZE; // system element

  1892.                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *

  1893.                     mxf->time_base.num / (8*mxf->time_base.den);

  1894.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1895.                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;

  1896.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1897.             }

  1898.         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1899.             if (st->codec->sample_rate != 48000) {

  1900.                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");

  1901.                 return -1;

  1902.             }

  1903.             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);

  1904.             if (s->oformat == &ff_mxf_d10_muxer) {

  1905.                 if (st->index != 1) {

  1906.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");

  1907.                     return -1;

  1908.                 }

  1909.                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&

  1910.                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {

  1911.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");

  1912.                 }

  1913.                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;

  1914.             } else

  1915.             mxf->slice_count = 1;

  1916.         }

  1917. 

  1918.         if (!sc->index) {

  1919.             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);

  1920.             if (sc->index == -1) {

  1921.                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "

  1922.                        "codec not currently supported in container\n", i);

  1923.                 return -1;

  1924.             }

  1925.         }

  1926. 

  1927.         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  1928. 

  1929.         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);

  1930.         sc->track_essence_element_key[15] = present[sc->index];

  1931.         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);

  1932. 

  1933.         if (!present[sc->index])

  1934.             mxf->essence_container_count++;

  1935.         present[sc->index]++;

  1936.     }

  1937. 

  1938.     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {

  1939.         mxf->essence_container_count = 1;

  1940.     }

  1941. 

  1942.     if (!(s->flags & AVFMT_FLAG_BITEXACT))

  1943.         mxf_gen_umid(s);

  1944. 

  1945.     for (i = 0; i < s->nb_streams; i++) {

  1946.         MXFStreamContext *sc = s->streams[i]->priv_data;

  1947.         // update element count

  1948.         sc->track_essence_element_key[13] = present[sc->index];

  1949.         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV

  1950.             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);

  1951.         else

  1952.             sc->order = AV_RB32(sc->track_essence_element_key+12);

  1953.     }

  1954. 

  1955.     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))

  1956.         timestamp = ff_iso8601_to_unix_time(t->value);

  1957.     if (timestamp)

  1958.         mxf->timestamp = mxf_parse_timestamp(timestamp);

  1959.     mxf->duration = -1;

  1960. 

  1961.     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));

  1962.     if (!mxf->timecode_track)

  1963.         return AVERROR(ENOMEM);

  1964.     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));

  1965.     if (!mxf->timecode_track->priv_data)

  1966.         return AVERROR(ENOMEM);

  1967.     mxf->timecode_track->index = -1;

  1968. 

  1969.     if (!spf)

  1970.         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });

  1971. 

  1972.     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)

  1973.         return -1;

  1974. 

  1975.     return 0;

  1976. }

  1977. 

  1978. static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };

  1979. 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 };

  1980. 

  1981. static void mxf_write_system_item(AVFormatContext *s)

  1982. {

  1983.     MXFContext *mxf = s->priv_data;

  1984.     AVIOContext *pb = s->pb;

  1985.     unsigned frame;

  1986.     uint32_t time_code;

  1987. 

  1988.     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  1989. 

  1990.     // write system metadata pack

  1991.     avio_write(pb, system_metadata_pack_key, 16);

  1992.     klv_encode_ber4_length(pb, 57);

  1993.     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present

  1994.     avio_w8(pb, 0x04); // content package rate

  1995.     avio_w8(pb, 0x00); // content package type

  1996.     avio_wb16(pb, 0x00); // channel handle

  1997.     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow

  1998.     if (mxf->essence_container_count > 1)

  1999.         avio_write(pb, multiple_desc_ul, 16);

  2000.     else {

  2001.         MXFStreamContext *sc = s->streams[0]->priv_data;

  2002.         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);

  2003.     }

  2004.     avio_w8(pb, 0);

  2005.     avio_wb64(pb, 0);

  2006.     avio_wb64(pb, 0); // creation date/time stamp

  2007. 

  2008.     avio_w8(pb, 0x81); // SMPTE 12M time code

  2009.     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);

  2010.     avio_wb32(pb, time_code);

  2011.     avio_wb32(pb, 0); // binary group data

  2012.     avio_wb64(pb, 0);

  2013. 

  2014.     // write system metadata package set

  2015.     avio_write(pb, system_metadata_package_set_key, 16);

  2016.     klv_encode_ber4_length(pb, 35);

  2017.     avio_w8(pb, 0x83); // UMID

  2018.     avio_wb16(pb, 0x20);

  2019.     mxf_write_umid(s, 1);

  2020. }

  2021. 

  2022. static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  2023. {

  2024.     MXFContext *mxf = s->priv_data;

  2025.     AVIOContext *pb = s->pb;

  2026.     MXFStreamContext *sc = st->priv_data;

  2027.     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /

  2028.         (8*mxf->time_base.den); // frame size

  2029.     int pad;

  2030. 

  2031.     packet_size += 16 + 4;

  2032.     packet_size += klv_fill_size(packet_size);

  2033. 

  2034.     klv_encode_ber4_length(pb, pkt->size);

  2035.     avio_write(pb, pkt->data, pkt->size);

  2036. 

  2037.     // ensure CBR muxing by padding to correct video frame size

  2038.     pad = packet_size - pkt->size - 16 - 4;

  2039.     if (pad > 20) {

  2040.         avio_write(s->pb, klv_fill_key, 16);

  2041.         pad -= 16 + 4;

  2042.         klv_encode_ber4_length(s->pb, pad);

  2043.         ffio_fill(s->pb, 0, pad);

  2044.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  2045.     } else {

  2046.         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");

  2047.         ffio_fill(s->pb, 0, pad);

  2048.     }

  2049. }

  2050. 

  2051. static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  2052. {

  2053.     MXFContext *mxf = s->priv_data;

  2054.     AVIOContext *pb = s->pb;

  2055.     int frame_size = pkt->size / st->codec->block_align;

  2056.     uint8_t *samples = pkt->data;

  2057.     uint8_t *end = pkt->data + pkt->size;

  2058.     int i;

  2059. 

  2060.     klv_encode_ber4_length(pb, 4 + frame_size*4*8);

  2061. 

  2062.     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));

  2063.     avio_wl16(pb, frame_size);

  2064.     avio_w8(pb, (1<<st->codec->channels)-1);

  2065. 

  2066.     while (samples < end) {

  2067.         for (i = 0; i < st->codec->channels; i++) {

  2068.             uint32_t sample;

  2069.             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {

  2070.                 sample = AV_RL24(samples)<< 4;

  2071.                 samples += 3;

  2072.             } else {

  2073.                 sample = AV_RL16(samples)<<12;

  2074.                 samples += 2;

  2075.             }

  2076.             avio_wl32(pb, sample | i);

  2077.         }

  2078.         for (; i < 8; i++)

  2079.             avio_wl32(pb, i);

  2080.     }

  2081. }

  2082. 

  2083. static int mxf_write_opatom_body_partition(AVFormatContext *s)

  2084. {

  2085.     MXFContext *mxf = s->priv_data;

  2086.     AVIOContext *pb = s->pb;

  2087.     AVStream *st = s->streams[0];

  2088.     MXFStreamContext *sc = st->priv_data;

  2089.     const uint8_t *key = NULL;

  2090. 

  2091.     int err;

  2092. 

  2093.     if (!mxf->header_written)

  2094.         key = body_partition_key;

  2095. 

  2096.     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)

  2097.         return err;

  2098.     mxf_write_klv_fill(s);

  2099.     avio_write(pb, sc->track_essence_element_key, 16);

  2100.     klv_encode_ber9_length(pb, mxf->body_offset);

  2101.     return 0;

  2102. }

  2103. 

  2104. static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)

  2105. {

  2106.     MXFContext *mxf = s->priv_data;

  2107.     AVIOContext *pb = s->pb;

  2108. 

  2109.     int err;

  2110. 

  2111.     if (!mxf->header_written) {

  2112.         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  2113.             return err;

  2114.         mxf_write_klv_fill(s);

  2115. 

  2116.         if ((err = mxf_write_opatom_body_partition(s)) < 0)

  2117.             return err;

  2118.         mxf->header_written = 1;

  2119.     }

  2120. 

  2121.     if (!mxf->edit_unit_byte_count) {

  2122.         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2123.         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;

  2124.         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;

  2125.     }

  2126.     mxf->edit_units_count++;

  2127.     avio_write(pb, pkt->data, pkt->size);

  2128.     mxf->body_offset += pkt->size;

  2129. 

  2130.     avio_flush(pb);

  2131. 

  2132.     return 0;

  2133. }

  2134. 

  2135. static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)

  2136. {

  2137.     MXFContext *mxf = s->priv_data;

  2138.     AVIOContext *pb = s->pb;

  2139.     AVStream *st = s->streams[pkt->stream_index];

  2140.     MXFStreamContext *sc = st->priv_data;

  2141.     MXFIndexEntry ie = {0};

  2142.     int err;

  2143. 

  2144.     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {

  2145.         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count

  2146.                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {

  2147.             mxf->edit_units_count = 0;

  2148.             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");

  2149.             return err;

  2150.         }

  2151.     }

  2152. 

  2153.     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {

  2154.         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {

  2155.             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");

  2156.             return -1;

  2157.         }

  2158.     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {

  2159.         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {

  2160.             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");

  2161.             return -1;

  2162.         }

  2163.     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {

  2164.         if (!mxf_parse_dv_frame(s, st, pkt)) {

  2165.             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");

  2166.             return -1;

  2167.         }

  2168.     } else if (st->codec->codec_id == AV_CODEC_ID_H264) {

  2169.         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {

  2170.             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");

  2171.             return -1;

  2172.         }

  2173.     }

  2174. 

  2175.     if (s->oformat == &ff_mxf_opatom_muxer)

  2176.         return mxf_write_opatom_packet(s, pkt, &ie);

  2177. 

  2178.     if (!mxf->header_written) {

  2179.         if (mxf->edit_unit_byte_count) {

  2180.             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)

  2181.                 return err;

  2182.             mxf_write_klv_fill(s);

  2183.             mxf_write_index_table_segment(s);

  2184.         } else {

  2185.             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  2186.                 return err;

  2187.         }

  2188.         mxf->header_written = 1;

  2189.     }

  2190. 

  2191.     if (st->index == 0) {

  2192.         if (!mxf->edit_unit_byte_count &&

  2193.             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&

  2194.             !(ie.flags & 0x33)) { // I frame, Gop start

  2195.             mxf_write_klv_fill(s);

  2196.             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)

  2197.                 return err;

  2198.             mxf_write_klv_fill(s);

  2199.             mxf_write_index_table_segment(s);

  2200.         }

  2201. 

  2202.         mxf_write_klv_fill(s);

  2203.         mxf_write_system_item(s);

  2204. 

  2205.         if (!mxf->edit_unit_byte_count) {

  2206.             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2207.             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;

  2208.             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;

  2209.             mxf->body_offset += KAG_SIZE; // size of system element

  2210.         }

  2211.         mxf->edit_units_count++;

  2212.     } else if (!mxf->edit_unit_byte_count && st->index == 1) {

  2213.         mxf->index_entries[mxf->edit_units_count-1].slice_offset =

  2214.             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;

  2215.     }

  2216. 

  2217.     mxf_write_klv_fill(s);

  2218.     avio_write(pb, sc->track_essence_element_key, 16); // write key

  2219.     if (s->oformat == &ff_mxf_d10_muxer) {

  2220.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)

  2221.             mxf_write_d10_video_packet(s, st, pkt);

  2222.         else

  2223.             mxf_write_d10_audio_packet(s, st, pkt);

  2224.     } else {

  2225.         klv_encode_ber4_length(pb, pkt->size); // write length

  2226.         avio_write(pb, pkt->data, pkt->size);

  2227.         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);

  2228.     }

  2229. 

  2230.     avio_flush(pb);

  2231. 

  2232.     return 0;

  2233. }

  2234. 

  2235. static void mxf_write_random_index_pack(AVFormatContext *s)

  2236. {

  2237.     MXFContext *mxf = s->priv_data;

  2238.     AVIOContext *pb = s->pb;

  2239.     uint64_t pos = avio_tell(pb);

  2240.     int i;

  2241. 

  2242.     avio_write(pb, random_index_pack_key, 16);

  2243.     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);

  2244. 

  2245.     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)

  2246.         avio_wb32(pb, 1); // BodySID of header partition

  2247.     else

  2248.         avio_wb32(pb, 0);

  2249.     avio_wb64(pb, 0); // offset of header partition

  2250. 

  2251.     for (i = 0; i < mxf->body_partitions_count; i++) {

  2252.         avio_wb32(pb, 1); // BodySID

  2253.         avio_wb64(pb, mxf->body_partition_offset[i]);

  2254.     }

  2255. 

  2256.     avio_wb32(pb, 0); // BodySID of footer partition

  2257.     avio_wb64(pb, mxf->footer_partition_offset);

  2258. 

  2259.     avio_wb32(pb, avio_tell(pb) - pos + 4);

  2260. }

  2261. 

  2262. static int mxf_write_footer(AVFormatContext *s)

  2263. {

  2264.     MXFContext *mxf = s->priv_data;

  2265.     AVIOContext *pb = s->pb;

  2266.     int err;

  2267. 

  2268.     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  2269. 

  2270.     mxf_write_klv_fill(s);

  2271.     mxf->footer_partition_offset = avio_tell(pb);

  2272.     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index

  2273.         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)

  2274.             return err;

  2275.     } else {

  2276.         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)

  2277.             return err;

  2278.         mxf_write_klv_fill(s);

  2279.         mxf_write_index_table_segment(s);

  2280.     }

  2281. 

  2282.     mxf_write_klv_fill(s);

  2283.     mxf_write_random_index_pack(s);

  2284. 

  2285.     if (s->pb->seekable) {

  2286.         if (s->oformat == &ff_mxf_opatom_muxer){

  2287.             /* rewrite body partition to update lengths */

  2288.             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);

  2289.             if ((err = mxf_write_opatom_body_partition(s)) < 0)

  2290.                 return err;

  2291.         }

  2292. 

  2293.         avio_seek(pb, 0, SEEK_SET);

  2294.         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {

  2295.             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)

  2296.                 return err;

  2297.             mxf_write_klv_fill(s);

  2298.             mxf_write_index_table_segment(s);

  2299.         } else {

  2300.             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)

  2301.                 return err;

  2302.         }

  2303.     }

  2304. 

  2305.     ff_audio_interleave_close(s);

  2306. 

  2307.     av_freep(&mxf->index_entries);

  2308.     av_freep(&mxf->body_partition_offset);

  2309.     av_freep(&mxf->timecode_track->priv_data);

  2310.     av_freep(&mxf->timecode_track);

  2311. 

  2312.     mxf_free(s);

  2313. 

  2314.     return 0;

  2315. }

  2316. 

  2317. static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2318. {

  2319.     int i, stream_count = 0;

  2320. 

  2321.     for (i = 0; i < s->nb_streams; i++)

  2322.         stream_count += !!s->streams[i]->last_in_packet_buffer;

  2323. 

  2324.     if (stream_count && (s->nb_streams == stream_count || flush)) {

  2325.         AVPacketList *pktl = s->internal->packet_buffer;

  2326.         if (s->nb_streams != stream_count) {

  2327.             AVPacketList *last = NULL;

  2328.             // find last packet in edit unit

  2329.             while (pktl) {

  2330.                 if (!stream_count || pktl->pkt.stream_index == 0)

  2331.                     break;

  2332.                 last = pktl;

  2333.                 pktl = pktl->next;

  2334.                 stream_count--;

  2335.             }

  2336.             // purge packet queue

  2337.             while (pktl) {

  2338.                 AVPacketList *next = pktl->next;

  2339. 

  2340.                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2341.                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2342.                 av_free_packet(&pktl->pkt);

  2343.                 av_freep(&pktl);

  2344.                 pktl = next;

  2345.             }

  2346.             if (last)

  2347.                 last->next = NULL;

  2348.             else {

  2349.                 s->internal->packet_buffer = NULL;

  2350.                 s->internal->packet_buffer_end= NULL;

  2351.                 goto out;

  2352.             }

  2353.             pktl = s->internal->packet_buffer;

  2354.         }

  2355. 

  2356.         *out = pktl->pkt;

  2357.         av_dlog(s, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);

  2358.         s->internal->packet_buffer = pktl->next;

  2359.         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2360.             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2361.         if(!s->internal->packet_buffer)

  2362.             s->internal->packet_buffer_end= NULL;

  2363.         av_freep(&pktl);

  2364.         return 1;

  2365.     } else {

  2366.     out:

  2367.         av_init_packet(out);

  2368.         return 0;

  2369.     }

  2370. }

  2371. 

  2372. static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)

  2373. {

  2374.     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;

  2375.     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;

  2376. 

  2377.     return next->dts > pkt->dts ||

  2378.         (next->dts == pkt->dts && sc->order < sc2->order);

  2379. }

  2380. 

  2381. static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2382. {

  2383.     return ff_audio_rechunk_interleave(s, out, pkt, flush,

  2384.                                mxf_interleave_get_packet, mxf_compare_timestamps);

  2385. }

  2386. 

  2387. static const AVOption d10_options[] = {

  2388.     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",

  2389.       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},

  2390.     { NULL },

  2391. };

  2392. 

  2393. static const AVClass mxf_d10_muxer_class = {

  2394.     .class_name     = "MXF-D10 muxer",

  2395.     .item_name      = av_default_item_name,

  2396.     .option         = d10_options,

  2397.     .version        = LIBAVUTIL_VERSION_INT,

  2398. };

  2399. 

  2400. AVOutputFormat ff_mxf_muxer = {

  2401.     .name              = "mxf",

  2402.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),

  2403.     .mime_type         = "application/mxf",

  2404.     .extensions        = "mxf",

  2405.     .priv_data_size    = sizeof(MXFContext),

  2406.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2407.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2408.     .write_header      = mxf_write_header,

  2409.     .write_packet      = mxf_write_packet,

  2410.     .write_trailer     = mxf_write_footer,

  2411.     .flags             = AVFMT_NOTIMESTAMPS,

  2412.     .interleave_packet = mxf_interleave,

  2413. };

  2414. 

  2415. AVOutputFormat ff_mxf_d10_muxer = {

  2416.     .name              = "mxf_d10",

  2417.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),

  2418.     .mime_type         = "application/mxf",

  2419.     .priv_data_size    = sizeof(MXFContext),

  2420.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2421.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2422.     .write_header      = mxf_write_header,

  2423.     .write_packet      = mxf_write_packet,

  2424.     .write_trailer     = mxf_write_footer,

  2425.     .flags             = AVFMT_NOTIMESTAMPS,

  2426.     .interleave_packet = mxf_interleave,

  2427.     .priv_class        = &mxf_d10_muxer_class,

  2428. };

  2429. 

  2430. AVOutputFormat ff_mxf_opatom_muxer = {

  2431.     .name              = "mxf_opatom",

  2432.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),

  2433.     .mime_type         = "application/mxf",

  2434.     .extensions        = "mxf",

  2435.     .priv_data_size    = sizeof(MXFContext),

  2436.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2437.     .video_codec       = AV_CODEC_ID_DNXHD,

  2438.     .write_header      = mxf_write_header,

  2439.     .write_packet      = mxf_write_packet,

  2440.     .write_trailer     = mxf_write_footer,

  2441.     .flags             = AVFMT_NOTIMESTAMPS,

  2442.     .interleave_packet = mxf_interleave,

  2443. };