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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. 

  56. #define EDIT_UNITS_PER_BODY 250

  57. #define KAG_SIZE 512

  58. 

  59. typedef struct {

  60.     int local_tag;

  61.     UID uid;

  62. } MXFLocalTagPair;

  63. 

  64. typedef struct {

  65.     uint8_t flags;

  66.     uint64_t offset;

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

  68.     uint16_t temporal_ref;

  69. } MXFIndexEntry;

  70. 

  71. typedef struct {

  72.     AudioInterleaveContext aic;

  73.     UID track_essence_element_key;

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

  75.     const UID *codec_ul;

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

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

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

  79.     int component_depth;

  80.     int temporal_reordering;

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

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

  83.     int video_bit_rate;

  84. } MXFStreamContext;

  85. 

  86. typedef struct {

  87.     UID container_ul;

  88.     UID element_ul;

  89.     UID codec_ul;

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

  91. } MXFContainerEssenceEntry;

  92. 

  93. static const struct {

  94.     enum AVCodecID id;

  95.     int index;

  96. } mxf_essence_mappings[] = {

  97.     { AV_CODEC_ID_MPEG2VIDEO, 0 },

  98.     { AV_CODEC_ID_PCM_S24LE,  1 },

  99.     { AV_CODEC_ID_PCM_S16LE,  1 },

  100.     { AV_CODEC_ID_DVVIDEO,   15 },

  101.     { AV_CODEC_ID_DNXHD,     24 },

  102.     { AV_CODEC_ID_JPEG2000,  34 },

  103.     { AV_CODEC_ID_H264,      35 },

  104.     { AV_CODEC_ID_NONE }

  105. };

  106. 

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

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

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

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

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

  112. 

  113. static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {

  114.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },

  115.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  116.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  117.       mxf_write_mpegvideo_desc },

  118.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },

  119.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },

  120.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  121.       mxf_write_aes3_desc },

  122.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },

  123.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },

  124.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  125.       mxf_write_wav_desc },

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

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

  128.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  130.       mxf_write_cdci_desc },

  131.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },

  132.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  133.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  134.       mxf_write_generic_sound_desc },

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

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

  137.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  139.       mxf_write_cdci_desc },

  140.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },

  141.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  142.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  143.       mxf_write_generic_sound_desc },

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

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

  146.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  147.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },

  148.       mxf_write_cdci_desc },

  149.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },

  150.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  151.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  152.       mxf_write_generic_sound_desc },

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

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

  155.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  157.       mxf_write_cdci_desc },

  158.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },

  159.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  160.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  161.       mxf_write_generic_sound_desc },

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

  163.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },

  164.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  165.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },

  166.       mxf_write_cdci_desc },

  167.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },

  168.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  169.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  170.       mxf_write_generic_sound_desc },

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

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

  173.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  175.       mxf_write_cdci_desc },

  176.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },

  177.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  178.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  179.       mxf_write_generic_sound_desc },

  180.     // DV Unknown

  181.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },

  182.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

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

  184.       mxf_write_cdci_desc },

  185.     // DV25 525/60

  186.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },

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

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

  189.       mxf_write_cdci_desc },

  190.     // DV25 625/50

  191.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },

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

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

  194.       mxf_write_cdci_desc },

  195.     // DV50 525/60

  196.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },

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

  198.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },

  199.       mxf_write_cdci_desc },

  200.     // DV50 625/50

  201.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },

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

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

  204.       mxf_write_cdci_desc },

  205.     // DV100 1080/60

  206.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },

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

  208.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },

  209.       mxf_write_cdci_desc },

  210.     // DV100 1080/50

  211.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },

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

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

  214.       mxf_write_cdci_desc },

  215.     // DV100 720/60

  216.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },

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

  218.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },

  219.       mxf_write_cdci_desc },

  220.     // DV100 720/50

  221.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },

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

  223.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },

  224.       mxf_write_cdci_desc },

  225.     // DNxHD 1080p 10bit high

  226.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  227.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  228.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },

  229.       mxf_write_cdci_desc },

  230.     // DNxHD 1080p 8bit medium

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

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

  233.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },

  234.       mxf_write_cdci_desc },

  235.     // DNxHD 1080p 8bit high

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

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

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

  239.       mxf_write_cdci_desc },

  240.     // DNxHD 1080i 10bit high

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

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

  243.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },

  244.       mxf_write_cdci_desc },

  245.     // DNxHD 1080i 8bit medium

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

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

  248.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },

  249.       mxf_write_cdci_desc },

  250.     // DNxHD 1080i 8bit high

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

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

  253.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },

  254.       mxf_write_cdci_desc },

  255.     // DNxHD 720p 10bit

  256.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  257.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  258.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },

  259.       mxf_write_cdci_desc },

  260.     // DNxHD 720p 8bit high

  261.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  262.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  263.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },

  264.       mxf_write_cdci_desc },

  265.     // DNxHD 720p 8bit medium

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

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

  268.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },

  269.       mxf_write_cdci_desc },

  270.     // DNxHD 720p 8bit low

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

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

  273.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },

  274.       mxf_write_cdci_desc },

  275.     // JPEG2000

  276.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },

  277.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },

  278.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },

  279.       mxf_write_cdci_desc },

  280.     // H.264

  281.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },

  282.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  283.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  284.       mxf_write_mpegvideo_desc },

  285.     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  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.       NULL },

  289. };

  290. 

  291. typedef struct MXFContext {

  292.     AVClass *av_class;

  293.     int64_t footer_partition_offset;

  294.     int essence_container_count;

  295.     AVRational time_base;

  296.     int header_written;

  297.     MXFIndexEntry *index_entries;

  298.     unsigned edit_units_count;

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

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

  301.     int last_indexed_edit_unit;

  302.     uint64_t *body_partition_offset;

  303.     unsigned body_partitions_count;

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

  305.     uint64_t duration;

  306.     AVTimecode tc;       ///< timecode context

  307.     AVStream *timecode_track;

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

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

  310.     uint64_t body_offset;

  311.     uint32_t instance_number;

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

  313.     int channel_count;

  314. } MXFContext;

  315. 

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

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

  318. 

  319. /**

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

  321.  */

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

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

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

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

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

  327. 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

  328. 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

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

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

  331. 

  332. /**

  333.  * partial key for header metadata

  334.  */

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

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

  337. 

  338. /**

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

  340.  */

  341. static const MXFLocalTagPair mxf_local_tag_batch[] = {

  342.     // preface set

  343.     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */

  344.     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */

  345.     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */

  346.     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */

  347.     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */

  348.     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */

  349.     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */

  350.     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */

  351.     // Identification

  352.     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */

  353.     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */

  354.     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */

  355.     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */

  356.     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */

  357.     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */

  358.     // Content Storage

  359.     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */

  360.     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */

  361.     // Essence Container Data

  362.     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */

  363.     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */

  364.     // Package

  365.     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */

  366.     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */

  367.     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */

  368.     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */

  369.     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */

  370.     // Track

  371.     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */

  372.     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */

  373.     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */

  374.     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */

  375.     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */

  376.     // Sequence

  377.     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */

  378.     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */

  379.     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */

  380.     // Source Clip

  381.     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */

  382.     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */

  383.     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */

  384.     // Timecode Component

  385.     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */

  386.     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */

  387.     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */

  388.     // File Descriptor

  389.     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */

  390.     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */

  391.     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */

  392.     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */

  393.     // Generic Picture Essence Descriptor

  394.     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */

  395.     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */

  396.     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */

  397.     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */

  398.     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */

  399.     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */

  400.     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */

  401.     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */

  402.     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */

  403.     // CDCI Picture Essence Descriptor

  404.     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */

  405.     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */

  406.     // Generic Sound Essence Descriptor

  407.     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */

  408.     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */

  409.     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */

  410.     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */

  411.     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */

  412.     // Index Table Segment

  413.     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */

  414.     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */

  415.     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */

  416.     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */

  417.     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */

  418.     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */

  419.     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */

  420.     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */

  421.     // MPEG video Descriptor

  422.     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */

  423.     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */

  424.     // Wave Audio Essence Descriptor

  425.     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */

  426.     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */

  427. };

  428. 

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

  430. {

  431.     avio_write(pb, uuid_base, 12);

  432.     avio_wb16(pb, type);

  433.     avio_wb16(pb, value);

  434. }

  435. 

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

  437. {

  438.     MXFContext *mxf = s->priv_data;

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

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

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

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

  443. }

  444. 

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

  446. {

  447.     avio_wb32(pb, ref_count);

  448.     avio_wb32(pb, 16);

  449. }

  450. 

  451. static int klv_ber_length(uint64_t len)

  452. {

  453.     if (len < 128)

  454.         return 1;

  455.     else

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

  457. }

  458. 

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

  460. {

  461.     // Determine the best BER size

  462.     int size;

  463.     if (len < 128) {

  464.         //short form

  465.         avio_w8(pb, len);

  466.         return 1;

  467.     }

  468. 

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

  470. 

  471.     // long form

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

  473.     while(size) {

  474.         size--;

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

  476.     }

  477.     return 0;

  478. }

  479. 

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

  481. {

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

  483.     avio_wb24(pb, len);

  484. }

  485. 

  486. /*

  487.  * Get essence container ul index

  488.  */

  489. static int mxf_get_essence_container_ul_index(enum AVCodecID id)

  490. {

  491.     int i;

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

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

  494.             return mxf_essence_mappings[i].index;

  495.     return -1;

  496. }

  497. 

  498. static void mxf_write_primer_pack(AVFormatContext *s)

  499. {

  500.     AVIOContext *pb = s->pb;

  501.     int local_tag_number, i = 0;

  502. 

  503.     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);

  504. 

  505.     avio_write(pb, primer_pack_key, 16);

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

  507. 

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

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

  510. 

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

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

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

  514.     }

  515. }

  516. 

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

  518. {

  519.     avio_wb16(pb, tag);

  520.     avio_wb16(pb, size);

  521. }

  522. 

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

  524. {

  525.     avio_write(pb, header_metadata_key, 13);

  526.     avio_wb24(pb, value);

  527. }

  528. 

  529. static void mxf_free(AVFormatContext *s)

  530. {

  531.     int i;

  532. 

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

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

  535.         av_freep(&st->priv_data);

  536.     }

  537. }

  538. 

  539. static const MXFCodecUL *mxf_get_data_definition_ul(int type)

  540. {

  541.     const MXFCodecUL *uls = ff_mxf_data_definition_uls;

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

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

  544.             break;

  545.         uls++;

  546.     }

  547.     return uls;

  548. }

  549. 

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

  551. #define DESCRIPTOR_COUNT(essence_container_count) \

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

  553. 

  554. static void mxf_write_essence_container_refs(AVFormatContext *s)

  555. {

  556.     MXFContext *c = s->priv_data;

  557.     AVIOContext *pb = s->pb;

  558.     int i;

  559. 

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

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

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

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

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

  565.     }

  566. 

  567.     if (c->essence_container_count > 1)

  568.         avio_write(pb, multiple_desc_ul, 16);

  569. }

  570. 

  571. static void mxf_write_preface(AVFormatContext *s)

  572. {

  573.     MXFContext *mxf = s->priv_data;

  574.     AVIOContext *pb = s->pb;

  575. 

  576.     mxf_write_metadata_key(pb, 0x012f00);

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

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

  579. 

  580.     // write preface set uid

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

  582.     mxf_write_uuid(pb, Preface, 0);

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

  584. 

  585.     // last modified date

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

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

  588. 

  589.     // write version

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

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

  592. 

  593.     // write identification_refs

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

  595.     mxf_write_refs_count(pb, 1);

  596.     mxf_write_uuid(pb, Identification, 0);

  597. 

  598.     // write content_storage_refs

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

  600.     mxf_write_uuid(pb, ContentStorage, 0);

  601. 

  602.     // operational pattern

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

  604.     avio_write(pb, op1a_ul, 16);

  605. 

  606.     // write essence_container_refs

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

  608.     mxf_write_essence_container_refs(s);

  609. 

  610.     // write dm_scheme_refs

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

  612.     avio_wb64(pb, 0);

  613. }

  614. 

  615. /*

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

  617.  */

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

  619. {

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

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

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

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

  624. }

  625. 

  626. static void mxf_write_identification(AVFormatContext *s)

  627. {

  628.     MXFContext *mxf = s->priv_data;

  629.     AVIOContext *pb = s->pb;

  630.     const char *company = "FFmpeg";

  631.     const char *product = "OP1a Muxer";

  632.     const char *version;

  633.     int length;

  634. 

  635.     mxf_write_metadata_key(pb, 0x013000);

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

  637. 

  638.     version = s->flags & AVFMT_FLAG_BITEXACT ?

  639.         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);

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

  641.     klv_encode_ber_length(pb, length);

  642. 

  643.     // write uid

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

  645.     mxf_write_uuid(pb, Identification, 0);

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

  647. 

  648.     // write generation uid

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

  650.     mxf_write_uuid(pb, Identification, 1);

  651. 

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

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

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

  655. 

  656.     // write product uid

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

  658.     mxf_write_uuid(pb, Identification, 2);

  659. 

  660.     // modification date

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

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

  663. }

  664. 

  665. static void mxf_write_content_storage(AVFormatContext *s)

  666. {

  667.     AVIOContext *pb = s->pb;

  668. 

  669.     mxf_write_metadata_key(pb, 0x011800);

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

  671.     klv_encode_ber_length(pb, 92);

  672. 

  673.     // write uid

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

  675.     mxf_write_uuid(pb, ContentStorage, 0);

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

  677. 

  678.     // write package reference

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

  680.     mxf_write_refs_count(pb, 2);

  681.     mxf_write_uuid(pb, MaterialPackage, 0);

  682.     mxf_write_uuid(pb, SourcePackage, 0);

  683. 

  684.     // write essence container data

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

  686.     mxf_write_refs_count(pb, 1);

  687.     mxf_write_uuid(pb, EssenceContainerData, 0);

  688. }

  689. 

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

  691. {

  692.     MXFContext *mxf = s->priv_data;

  693.     AVIOContext *pb = s->pb;

  694.     MXFStreamContext *sc = st->priv_data;

  695. 

  696.     mxf_write_metadata_key(pb, 0x013b00);

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

  698.     klv_encode_ber_length(pb, 80);

  699. 

  700.     // write track uid

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

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

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

  704. 

  705.     // write track id

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

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

  708. 

  709.     // write track number

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

  711.     if (type == MaterialPackage)

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

  713.     else

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

  715. 

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

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

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

  719. 

  720.     // write origin

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

  722.     avio_wb64(pb, 0);

  723. 

  724.     // write sequence refs

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

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

  727. }

  728. 

  729. 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 };

  730. 

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

  732. {

  733.     MXFContext *mxf = s->priv_data;

  734.     AVIOContext *pb = s->pb;

  735. 

  736.     // find data define uls

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

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

  739.         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);

  740.     else {

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

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

  743.     }

  744. 

  745.     // write duration

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

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

  748. }

  749. 

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

  751. {

  752.     MXFContext *mxf = s->priv_data;

  753.     AVIOContext *pb = s->pb;

  754.     enum MXFMetadataSetType component;

  755. 

  756.     mxf_write_metadata_key(pb, 0x010f00);

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

  758.     klv_encode_ber_length(pb, 80);

  759. 

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

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

  762. 

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

  764.     mxf_write_common_fields(s, st);

  765. 

  766.     // write structural component

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

  768.     mxf_write_refs_count(pb, 1);

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

  770.         component = TimecodeComponent;

  771.     else

  772.         component = SourceClip;

  773.     if (type == SourcePackage)

  774.         component += TypeBottom;

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

  776. }

  777. 

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

  779. {

  780.     MXFContext *mxf = s->priv_data;

  781.     AVIOContext *pb = s->pb;

  782. 

  783.     mxf_write_metadata_key(pb, 0x011400);

  784.     klv_encode_ber_length(pb, 75);

  785. 

  786.     // UID

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

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

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

  790. 

  791.     mxf_write_common_fields(s, st);

  792. 

  793.     // Start Time Code

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

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

  796. 

  797.     // Rounded Time Code Base

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

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

  800. 

  801.     // Drop Frame

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

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

  804. }

  805. 

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

  807. {

  808.     AVIOContext *pb = s->pb;

  809.     int i;

  810. 

  811.     mxf_write_metadata_key(pb, 0x011100);

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

  813.     klv_encode_ber_length(pb, 108);

  814. 

  815.     // write uid

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

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

  818. 

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

  820.     mxf_write_common_fields(s, st);

  821. 

  822.     // write start_position

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

  824.     avio_wb64(pb, 0);

  825. 

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

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

  828.     if (type == SourcePackage) {

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

  830.             avio_wb64(pb, 0);

  831.     } else

  832.         mxf_write_umid(s, 1);

  833. 

  834.     // write source track id

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

  836.     if (type == SourcePackage)

  837.         avio_wb32(pb, 0);

  838.     else

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

  840. }

  841. 

  842. static void mxf_write_multi_descriptor(AVFormatContext *s)

  843. {

  844.     MXFContext *mxf = s->priv_data;

  845.     AVIOContext *pb = s->pb;

  846.     const uint8_t *ul;

  847.     int i;

  848. 

  849.     mxf_write_metadata_key(pb, 0x014400);

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

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

  852. 

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

  854.     mxf_write_uuid(pb, MultipleDescriptor, 0);

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

  856. 

  857.     // write sample rate

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

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

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

  861. 

  862.     // write essence container ul

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

  864.     if (mxf->essence_container_count > 1)

  865.         ul = multiple_desc_ul;

  866.     else {

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

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

  869.     }

  870.     avio_write(pb, ul, 16);

  871. 

  872.     // write sub descriptor refs

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

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

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

  876.         mxf_write_uuid(pb, SubDescriptor, i);

  877. }

  878. 

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

  880. {

  881.     MXFContext *mxf = s->priv_data;

  882.     MXFStreamContext *sc = st->priv_data;

  883.     AVIOContext *pb = s->pb;

  884. 

  885.     avio_write(pb, key, 16);

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

  887. 

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

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

  890. 

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

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

  893. 

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

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

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

  897. 

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

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

  900. }

  901. 

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

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

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

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

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

  907. 

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

  909. {

  910.     MXFStreamContext *sc = st->priv_data;

  911.     AVIOContext *pb = s->pb;

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

  913.     int display_height;

  914.     int f1, f2;

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

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

  917.         desc_size += 5;

  918. 

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

  920. 

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

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

  923. 

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

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

  926. 

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

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

  929. 

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

  931.         display_height = 576;

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

  933.         display_height = 486;

  934.     else

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

  936. 

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

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

  939. 

  940.     // component depth

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

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

  943. 

  944.     // horizontal subsampling

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

  946.     avio_wb32(pb, 2);

  947. 

  948.     // frame layout

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

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

  951. 

  952.     // video line map

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

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

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

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

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

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

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

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

  961.     }

  962. 

  963.     if (!sc->interlaced) {

  964.         f2  = 0;

  965.         f1 *= 2;

  966.     }

  967. 

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

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

  970.     avio_wb32(pb, 4);

  971.     avio_wb32(pb, f1);

  972.     if (sc->interlaced)

  973.         avio_wb32(pb, f2);

  974. 

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

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

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

  978. 

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

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

  981. 

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

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

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

  985.     }

  986. 

  987. }

  988. 

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

  990. {

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

  992. }

  993. 

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

  995. {

  996.     AVIOContext *pb = s->pb;

  997.     MXFStreamContext *sc = st->priv_data;

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

  999. 

  1000.     if (st->codec->codec_id != AV_CODEC_ID_H264) {

  1001.         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);

  1002. 

  1003.         // bit rate

  1004.         mxf_write_local_tag(pb, 4, 0x8000);

  1005.         avio_wb32(pb, sc->video_bit_rate);

  1006. 

  1007.         // profile and level

  1008.         mxf_write_local_tag(pb, 1, 0x8007);

  1009.         if (!st->codec->profile)

  1010.             profile_and_level |= 0x80; // escape bit

  1011.         avio_w8(pb, profile_and_level);

  1012.     } else {

  1013.         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);

  1014.     }

  1015. }

  1016. 

  1017. static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1018. {

  1019.     AVIOContext *pb = s->pb;

  1020.     MXFContext *mxf = s->priv_data;

  1021.     int show_warnings = !mxf->footer_partition_offset;

  1022. 

  1023.     mxf_write_generic_desc(s, st, key, size+5+12+8+8);

  1024. 

  1025.     // audio locked

  1026.     mxf_write_local_tag(pb, 1, 0x3D02);

  1027.     avio_w8(pb, 1);

  1028. 

  1029.     // write audio sampling rate

  1030.     mxf_write_local_tag(pb, 8, 0x3D03);

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

  1032.     avio_wb32(pb, 1);

  1033. 

  1034.     mxf_write_local_tag(pb, 4, 0x3D07);

  1035.     if (mxf->channel_count == -1) {

  1036.         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))

  1037.             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");

  1038.         avio_wb32(pb, st->codec->channels);

  1039.     } else if (s->oformat == &ff_mxf_d10_muxer) {

  1040.         if (show_warnings && (mxf->channel_count < st->codec->channels))

  1041.             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");

  1042.         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))

  1043.             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");

  1044.         avio_wb32(pb, mxf->channel_count);

  1045.     } else {

  1046.         if (show_warnings && mxf->channel_count != -1)

  1047.             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");

  1048.         avio_wb32(pb, st->codec->channels);

  1049.     }

  1050. 

  1051.     mxf_write_local_tag(pb, 4, 0x3D01);

  1052.     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));

  1053. }

  1054. 

  1055. static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1056. {

  1057.     AVIOContext *pb = s->pb;

  1058. 

  1059.     mxf_write_generic_sound_common(s, st, key, size+6+8);

  1060. 

  1061.     mxf_write_local_tag(pb, 2, 0x3D0A);

  1062.     avio_wb16(pb, st->codec->block_align);

  1063. 

  1064.     // avg bytes per sec

  1065.     mxf_write_local_tag(pb, 4, 0x3D09);

  1066.     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);

  1067. }

  1068. 

  1069. static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)

  1070. {

  1071.     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);

  1072. }

  1073. 

  1074. static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)

  1075. {

  1076.     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);

  1077. }

  1078. 

  1079. static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)

  1080. {

  1081.     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);

  1082. }

  1083. 

  1084. static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)

  1085. {

  1086.     MXFContext *mxf = s->priv_data;

  1087.     AVIOContext *pb = s->pb;

  1088.     int i, track_count = s->nb_streams+1;

  1089. 

  1090.     if (type == MaterialPackage) {

  1091.         mxf_write_metadata_key(pb, 0x013600);

  1092.         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);

  1093.         klv_encode_ber_length(pb, 92 + 16*track_count);

  1094.     } else {

  1095.         mxf_write_metadata_key(pb, 0x013700);

  1096.         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);

  1097.         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference

  1098.     }

  1099. 

  1100.     // write uid

  1101.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1102.     mxf_write_uuid(pb, type, 0);

  1103.     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);

  1104.     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);

  1105. 

  1106.     // write package umid

  1107.     mxf_write_local_tag(pb, 32, 0x4401);

  1108.     mxf_write_umid(s, type == SourcePackage);

  1109.     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);

  1110. 

  1111.     // package creation date

  1112.     mxf_write_local_tag(pb, 8, 0x4405);

  1113.     avio_wb64(pb, mxf->timestamp);

  1114. 

  1115.     // package modified date

  1116.     mxf_write_local_tag(pb, 8, 0x4404);

  1117.     avio_wb64(pb, mxf->timestamp);

  1118. 

  1119.     // write track refs

  1120.     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);

  1121.     mxf_write_refs_count(pb, track_count);

  1122.     mxf_write_uuid(pb, type == MaterialPackage ? Track :

  1123.                    Track + TypeBottom, -1); // timecode track

  1124.     for (i = 0; i < s->nb_streams; i++)

  1125.         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);

  1126. 

  1127.     // write multiple descriptor reference

  1128.     if (type == SourcePackage) {

  1129.         mxf_write_local_tag(pb, 16, 0x4701);

  1130.         if (s->nb_streams > 1) {

  1131.             mxf_write_uuid(pb, MultipleDescriptor, 0);

  1132.             mxf_write_multi_descriptor(s);

  1133.         } else

  1134.             mxf_write_uuid(pb, SubDescriptor, 0);

  1135.     }

  1136. 

  1137.     // write timecode track

  1138.     mxf_write_track(s, mxf->timecode_track, type);

  1139.     mxf_write_sequence(s, mxf->timecode_track, type);

  1140.     mxf_write_timecode_component(s, mxf->timecode_track, type);

  1141. 

  1142.     for (i = 0; i < s->nb_streams; i++) {

  1143.         AVStream *st = s->streams[i];

  1144.         mxf_write_track(s, st, type);

  1145.         mxf_write_sequence(s, st, type);

  1146.         mxf_write_structural_component(s, st, type);

  1147. 

  1148.         if (type == SourcePackage) {

  1149.             MXFStreamContext *sc = st->priv_data;

  1150.             mxf_essence_container_uls[sc->index].write_desc(s, st);

  1151.         }

  1152.     }

  1153. }

  1154. 

  1155. static int mxf_write_essence_container_data(AVFormatContext *s)

  1156. {

  1157.     AVIOContext *pb = s->pb;

  1158. 

  1159.     mxf_write_metadata_key(pb, 0x012300);

  1160.     klv_encode_ber_length(pb, 72);

  1161. 

  1162.     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID

  1163.     mxf_write_uuid(pb, EssenceContainerData, 0);

  1164. 

  1165.     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID

  1166.     mxf_write_umid(s, 1);

  1167. 

  1168.     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID

  1169.     avio_wb32(pb, 1);

  1170. 

  1171.     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID

  1172.     avio_wb32(pb, 2);

  1173. 

  1174.     return 0;

  1175. }

  1176. 

  1177. static int mxf_write_header_metadata_sets(AVFormatContext *s)

  1178. {

  1179.     mxf_write_preface(s);

  1180.     mxf_write_identification(s);

  1181.     mxf_write_content_storage(s);

  1182.     mxf_write_package(s, MaterialPackage);

  1183.     mxf_write_package(s, SourcePackage);

  1184.     mxf_write_essence_container_data(s);

  1185.     return 0;

  1186. }

  1187. 

  1188. static unsigned klv_fill_size(uint64_t size)

  1189. {

  1190.     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));

  1191.     if (pad < 20) // smallest fill item possible

  1192.         return pad + KAG_SIZE;

  1193.     else

  1194.         return pad & (KAG_SIZE-1);

  1195. }

  1196. 

  1197. static void mxf_write_index_table_segment(AVFormatContext *s)

  1198. {

  1199.     MXFContext *mxf = s->priv_data;

  1200.     AVIOContext *pb = s->pb;

  1201.     int i, j, temporal_reordering = 0;

  1202.     int key_index = mxf->last_key_index;

  1203. 

  1204.     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);

  1205. 

  1206.     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)

  1207.         return;

  1208. 

  1209.     avio_write(pb, index_table_segment_key, 16);

  1210. 

  1211.     if (mxf->edit_unit_byte_count) {

  1212.         klv_encode_ber_length(pb, 80);

  1213.     } else {

  1214.         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +

  1215.                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));

  1216.     }

  1217. 

  1218.     // instance id

  1219.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1220.     mxf_write_uuid(pb, IndexTableSegment, 0);

  1221. 

  1222.     // index edit rate

  1223.     mxf_write_local_tag(pb, 8, 0x3F0B);

  1224.     avio_wb32(pb, mxf->time_base.den);

  1225.     avio_wb32(pb, mxf->time_base.num);

  1226. 

  1227.     // index start position

  1228.     mxf_write_local_tag(pb, 8, 0x3F0C);

  1229.     avio_wb64(pb, mxf->last_indexed_edit_unit);

  1230. 

  1231.     // index duration

  1232.     mxf_write_local_tag(pb, 8, 0x3F0D);

  1233.     if (mxf->edit_unit_byte_count)

  1234.         avio_wb64(pb, 0); // index table covers whole container

  1235.     else

  1236.         avio_wb64(pb, mxf->edit_units_count);

  1237. 

  1238.     // edit unit byte count

  1239.     mxf_write_local_tag(pb, 4, 0x3F05);

  1240.     avio_wb32(pb, mxf->edit_unit_byte_count);

  1241. 

  1242.     // index sid

  1243.     mxf_write_local_tag(pb, 4, 0x3F06);

  1244.     avio_wb32(pb, 2);

  1245. 

  1246.     // body sid

  1247.     mxf_write_local_tag(pb, 4, 0x3F07);

  1248.     avio_wb32(pb, 1);

  1249. 

  1250.     if (!mxf->edit_unit_byte_count) {

  1251.         // real slice count - 1

  1252.         mxf_write_local_tag(pb, 1, 0x3F08);

  1253.         avio_w8(pb, mxf->slice_count);

  1254. 

  1255.         // delta entry array

  1256.         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);

  1257.         avio_wb32(pb, s->nb_streams+1); // num of entries

  1258.         avio_wb32(pb, 6);               // size of one entry

  1259.         // write system item delta entry

  1260.         avio_w8(pb, 0);

  1261.         avio_w8(pb, 0); // slice entry

  1262.         avio_wb32(pb, 0); // element delta

  1263.         for (i = 0; i < s->nb_streams; i++) {

  1264.             AVStream *st = s->streams[i];

  1265.             MXFStreamContext *sc = st->priv_data;

  1266.             avio_w8(pb, sc->temporal_reordering);

  1267.             if (sc->temporal_reordering)

  1268.                 temporal_reordering = 1;

  1269.             if (i == 0) { // video track

  1270.                 avio_w8(pb, 0); // slice number

  1271.                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill

  1272.             } else { // audio track

  1273.                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;

  1274.                 audio_frame_size += klv_fill_size(audio_frame_size);

  1275.                 avio_w8(pb, 1);

  1276.                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta

  1277.             }

  1278.         }

  1279. 

  1280.         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);

  1281.         avio_wb32(pb, mxf->edit_units_count);  // num of entries

  1282.         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry

  1283. 

  1284.         for (i = 0; i < mxf->edit_units_count; i++) {

  1285.             int temporal_offset = 0;

  1286. 

  1287.             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame

  1288.                 mxf->last_key_index = key_index;

  1289.                 key_index = i;

  1290.             }

  1291. 

  1292.             if (temporal_reordering) {

  1293.                 int pic_num_in_gop = i - key_index;

  1294.                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {

  1295.                     for (j = key_index; j < mxf->edit_units_count; j++) {

  1296.                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)

  1297.                             break;

  1298.                     }

  1299.                     if (j == mxf->edit_units_count)

  1300.                         av_log(s, AV_LOG_WARNING, "missing frames\n");

  1301.                     temporal_offset = j - key_index - pic_num_in_gop;

  1302.                 }

  1303.             }

  1304.             avio_w8(pb, temporal_offset);

  1305. 

  1306.             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction

  1307.                 avio_w8(pb, mxf->last_key_index - i);

  1308.             } else {

  1309.                 avio_w8(pb, key_index - i); // key frame offset

  1310.                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward

  1311.                     mxf->last_key_index = key_index;

  1312.             }

  1313. 

  1314.             if (!(mxf->index_entries[i].flags & 0x33) && // I frame

  1315.                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)

  1316.                 mxf->index_entries[i].flags |= 0x80; // random access

  1317.             avio_w8(pb, mxf->index_entries[i].flags);

  1318.             // stream offset

  1319.             avio_wb64(pb, mxf->index_entries[i].offset);

  1320.             if (s->nb_streams > 1)

  1321.                 avio_wb32(pb, mxf->index_entries[i].slice_offset);

  1322.         }

  1323. 

  1324.         mxf->last_key_index = key_index - mxf->edit_units_count;

  1325.         mxf->last_indexed_edit_unit += mxf->edit_units_count;

  1326.         mxf->edit_units_count = 0;

  1327.     }

  1328. }

  1329. 

  1330. static void mxf_write_klv_fill(AVFormatContext *s)

  1331. {

  1332.     unsigned pad = klv_fill_size(avio_tell(s->pb));

  1333.     if (pad) {

  1334.         avio_write(s->pb, klv_fill_key, 16);

  1335.         pad -= 16 + 4;

  1336.         klv_encode_ber4_length(s->pb, pad);

  1337.         ffio_fill(s->pb, 0, pad);

  1338.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  1339.     }

  1340. }

  1341. 

  1342. static int mxf_write_partition(AVFormatContext *s, int bodysid,

  1343.                                 int indexsid,

  1344.                                 const uint8_t *key, int write_metadata)

  1345. {

  1346.     MXFContext *mxf = s->priv_data;

  1347.     AVIOContext *pb = s->pb;

  1348.     int64_t header_byte_count_offset;

  1349.     unsigned index_byte_count = 0;

  1350.     uint64_t partition_offset = avio_tell(pb);

  1351.     int err;

  1352. 

  1353.     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)

  1354.         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +

  1355.             12+mxf->edit_units_count*(11+mxf->slice_count*4);

  1356.     else if (mxf->edit_unit_byte_count && indexsid)

  1357.         index_byte_count = 80;

  1358. 

  1359.     if (index_byte_count) {

  1360.         // add encoded ber length

  1361.         index_byte_count += 16 + klv_ber_length(index_byte_count);

  1362.         index_byte_count += klv_fill_size(index_byte_count);

  1363.     }

  1364. 

  1365.     if (!memcmp(key, body_partition_key, 16)) {

  1366.         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,

  1367.                                      sizeof(*mxf->body_partition_offset))) < 0) {

  1368.             mxf->body_partitions_count = 0;

  1369.             return err;

  1370.         }

  1371.         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;

  1372.     }

  1373. 

  1374.     // write klv

  1375.     avio_write(pb, key, 16);

  1376.     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));

  1377. 

  1378.     // write partition value

  1379.     avio_wb16(pb, 1); // majorVersion

  1380.     avio_wb16(pb, 2); // minorVersion

  1381.     avio_wb32(pb, KAG_SIZE); // KAGSize

  1382. 

  1383.     avio_wb64(pb, partition_offset); // ThisPartition

  1384. 

  1385.     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)

  1386.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition

  1387.     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)

  1388.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition

  1389.     else

  1390.         avio_wb64(pb, 0);

  1391. 

  1392.     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition

  1393. 

  1394.     // set offset

  1395.     header_byte_count_offset = avio_tell(pb);

  1396.     avio_wb64(pb, 0); // headerByteCount, update later

  1397. 

  1398.     // indexTable

  1399.     avio_wb64(pb, index_byte_count); // indexByteCount

  1400.     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID

  1401. 

  1402.     // BodyOffset

  1403.     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {

  1404.         avio_wb64(pb, mxf->body_offset);

  1405.     } else

  1406.         avio_wb64(pb, 0);

  1407. 

  1408.     avio_wb32(pb, bodysid); // bodySID

  1409. 

  1410.     // operational pattern

  1411.     avio_write(pb, op1a_ul, 16);

  1412. 

  1413.     // essence container

  1414.     mxf_write_essence_container_refs(s);

  1415. 

  1416.     if (write_metadata) {

  1417.         // mark the start of the headermetadata and calculate metadata size

  1418.         int64_t pos, start;

  1419.         unsigned header_byte_count;

  1420. 

  1421.         mxf_write_klv_fill(s);

  1422.         start = avio_tell(s->pb);

  1423.         mxf_write_primer_pack(s);

  1424.         mxf_write_header_metadata_sets(s);

  1425.         pos = avio_tell(s->pb);

  1426.         header_byte_count = pos - start + klv_fill_size(pos);

  1427. 

  1428.         // update header_byte_count

  1429.         avio_seek(pb, header_byte_count_offset, SEEK_SET);

  1430.         avio_wb64(pb, header_byte_count);

  1431.         avio_seek(pb, pos, SEEK_SET);

  1432.     }

  1433. 

  1434.     avio_flush(pb);

  1435. 

  1436.     return 0;

  1437. }

  1438. 

  1439. static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,

  1440. AVPacket *pkt)

  1441. {

  1442.     MXFContext *mxf = s->priv_data;

  1443.     MXFStreamContext *sc = st->priv_data;

  1444.     int i, cid;

  1445.     uint8_t* header_cid;

  1446.     int frame_size = 0;

  1447. 

  1448.     if (mxf->header_written)

  1449.         return 1;

  1450. 

  1451.     if (pkt->size < 43)

  1452.         return -1;

  1453. 

  1454.     header_cid = pkt->data + 0x28;

  1455.     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];

  1456. 

  1457.     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)

  1458.         return -1;

  1459. 

  1460.     switch (cid) {

  1461.     case 1235:

  1462.         sc->index = 24;

  1463.         sc->component_depth = 10;

  1464.         break;

  1465.     case 1237:

  1466.         sc->index = 25;

  1467.         break;

  1468.     case 1238:

  1469.         sc->index = 26;

  1470.         break;

  1471.     case 1241:

  1472.         sc->index = 27;

  1473.         sc->component_depth = 10;

  1474.         break;

  1475.     case 1242:

  1476.         sc->index = 28;

  1477.         break;

  1478.     case 1243:

  1479.         sc->index = 29;

  1480.         break;

  1481.     case 1250:

  1482.         sc->index = 30;

  1483.         sc->component_depth = 10;

  1484.         break;

  1485.     case 1251:

  1486.         sc->index = 31;

  1487.         break;

  1488.     case 1252:

  1489.         sc->index = 32;

  1490.         break;

  1491.     case 1253:

  1492.         sc->index = 33;

  1493.         break;

  1494.     default:

  1495.         return -1;

  1496.     }

  1497. 

  1498.     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  1499.     sc->aspect_ratio = (AVRational){ 16, 9 };

  1500. 

  1501.     mxf->edit_unit_byte_count = KAG_SIZE;

  1502.     for (i = 0; i < s->nb_streams; i++) {

  1503.         AVStream *st = s->streams[i];

  1504.         MXFStreamContext *sc = st->priv_data;

  1505.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1506.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1507.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1508.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1509.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1510.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1511.         }

  1512.     }

  1513. 

  1514.     return 1;

  1515. }

  1516. 

  1517. static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1518. {

  1519.     MXFContext *mxf = s->priv_data;

  1520.     MXFStreamContext *sc = st->priv_data;

  1521.     uint8_t *vs_pack, *vsc_pack;

  1522.     int i, ul_index, frame_size, stype, pal;

  1523. 

  1524.     if (mxf->header_written)

  1525.         return 1;

  1526. 

  1527.     // Check for minimal frame size

  1528.     if (pkt->size < 120000)

  1529.         return -1;

  1530. 

  1531.     vs_pack  = pkt->data + 80*5 + 48;

  1532.     vsc_pack = pkt->data + 80*5 + 53;

  1533.     stype    = vs_pack[3] & 0x1f;

  1534.     pal      = (vs_pack[3] >> 5) & 0x1;

  1535. 

  1536.     if ((vs_pack[2] & 0x07) == 0x02)

  1537.         sc->aspect_ratio = (AVRational){ 16, 9 };

  1538.     else

  1539.         sc->aspect_ratio = (AVRational){ 4, 3 };

  1540. 

  1541.     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;

  1542.     // TODO: fix dv encoder to set proper FF/FS value in VSC pack

  1543.     // and set field dominance accordingly

  1544.     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);

  1545. 

  1546.     switch (stype) {

  1547.     case 0x18: // DV100 720p

  1548.         ul_index = 6 + pal;

  1549.         frame_size = pal ? 288000 : 240000;

  1550.         if (sc->interlaced) {

  1551.             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");

  1552.             sc->interlaced = 0;

  1553.         }

  1554.         break;

  1555.     case 0x14: // DV100 1080i

  1556.         ul_index = 4 + pal;

  1557.         frame_size = pal ? 576000 : 480000;

  1558.         break;

  1559.     case 0x04: // DV50

  1560.         ul_index = 2 + pal;

  1561.         frame_size = pal ? 288000 : 240000;

  1562.         break;

  1563.     default: // DV25

  1564.         ul_index = 0 + pal;

  1565.         frame_size = pal ? 144000 : 120000;

  1566.     }

  1567. 

  1568.     sc->index = ul_index + 16;

  1569.     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;

  1570. 

  1571.     mxf->edit_unit_byte_count = KAG_SIZE;

  1572.     for (i = 0; i < s->nb_streams; i++) {

  1573.         AVStream *st = s->streams[i];

  1574.         MXFStreamContext *sc = st->priv_data;

  1575.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1576.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1577.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1578.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1579.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1580.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1581.         }

  1582.     }

  1583. 

  1584.     return 1;

  1585. }

  1586. 

  1587. static const struct {

  1588.     UID uid;

  1589.     int frame_size;

  1590.     int profile;

  1591.     uint8_t interlaced;

  1592. } mxf_h264_codec_uls[] = {

  1593.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra

  1594.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60

  1595.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50

  1596.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30

  1597.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25

  1598.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60

  1599.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50

  1600.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra

  1601.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60

  1602.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50

  1603.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30

  1604.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25

  1605.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60

  1606.     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50

  1607. };

  1608. 

  1609. static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,

  1610.                                 AVPacket *pkt, MXFIndexEntry *e)

  1611. {

  1612.     MXFContext *mxf = s->priv_data;

  1613.     MXFStreamContext *sc = st->priv_data;

  1614.     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);

  1615.     const uint8_t *buf = pkt->data;

  1616.     const uint8_t *buf_end = pkt->data + pkt->size;

  1617.     uint32_t state = -1;

  1618.     int extra_size = 512; // support AVC Intra files without SPS/PPS header

  1619.     int i, frame_size;

  1620.     uint8_t uid_found;

  1621. 

  1622.     if (pkt->size > extra_size)

  1623.         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header

  1624. 

  1625.     for (;;) {

  1626.         buf = avpriv_find_start_code(buf, buf_end, &state);

  1627.         if (buf >= buf_end)

  1628.             break;

  1629.         --buf;

  1630.         switch (state & 0x1f) {

  1631.         case NAL_SPS:

  1632.             st->codec->profile = buf[1];

  1633.             e->flags |= 0x40;

  1634.             break;

  1635.         case NAL_PPS:

  1636.             if (e->flags & 0x40) { // sequence header present

  1637.                 e->flags |= 0x80; // random access

  1638.                 extra_size = 0;

  1639.                 buf = buf_end;

  1640.             }

  1641.             break;

  1642.         default:

  1643.             break;

  1644.         }

  1645.     }

  1646. 

  1647.     if (mxf->header_written)

  1648.         return 1;

  1649. 

  1650.     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD

  1651.     sc->component_depth = 10; // AVC Intra is always 10 Bit

  1652.     sc->interlaced = st->codec->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;

  1653.     if (sc->interlaced)

  1654.         sc->field_dominance = 1; // top field first is mandatory for AVC Intra

  1655. 

  1656.     uid_found = 0;

  1657.     frame_size = pkt->size + extra_size;

  1658.     for (i = 0; i < mxf_h264_num_codec_uls; i++) {

  1659.         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {

  1660.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  1661.             return 1;

  1662.         } else if (st->codec->profile == mxf_h264_codec_uls[i].profile) {

  1663.             sc->codec_ul = &mxf_h264_codec_uls[i].uid;

  1664.             uid_found = 1;

  1665.         }

  1666.     }

  1667. 

  1668.     if (!uid_found) {

  1669.         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");

  1670.         return 0;

  1671.     }

  1672. 

  1673.     return 1;

  1674. }

  1675. 

  1676. static const UID mxf_mpeg2_codec_uls[] = {

  1677.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame

  1678.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP

  1679.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame

  1680.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP

  1681.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame

  1682.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP

  1683.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame

  1684.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP

  1685.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame

  1686.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP

  1687. };

  1688. 

  1689. static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)

  1690. {

  1691.     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;

  1692. 

  1693.     if (avctx->profile == 4) { // Main

  1694.         if (avctx->level == 8) // Main

  1695.             return &mxf_mpeg2_codec_uls[0+long_gop];

  1696.         else if (avctx->level == 4) // High

  1697.             return &mxf_mpeg2_codec_uls[4+long_gop];

  1698.         else if (avctx->level == 6) // High 14

  1699.             return &mxf_mpeg2_codec_uls[8+long_gop];

  1700.     } else if (avctx->profile == 0) { // 422

  1701.         if (avctx->level == 5) // Main

  1702.             return &mxf_mpeg2_codec_uls[2+long_gop];

  1703.         else if (avctx->level == 2) // High

  1704.             return &mxf_mpeg2_codec_uls[6+long_gop];

  1705.     }

  1706.     return NULL;

  1707. }

  1708. 

  1709. static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,

  1710.                                  AVPacket *pkt, MXFIndexEntry *e)

  1711. {

  1712.     MXFStreamContext *sc = st->priv_data;

  1713.     uint32_t c = -1;

  1714.     int i;

  1715. 

  1716.     for(i = 0; i < pkt->size - 4; i++) {

  1717.         c = (c<<8) + pkt->data[i];

  1718.         if (c == 0x1b5) {

  1719.             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext

  1720.                 st->codec->profile = pkt->data[i+1] & 0x07;

  1721.                 st->codec->level   = pkt->data[i+2] >> 4;

  1722.             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext

  1723.                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame

  1724.                 if (sc->interlaced)

  1725.                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first

  1726.                 break;

  1727.             }

  1728.         } else if (c == 0x1b8) { // gop

  1729.             if (pkt->data[i+4]>>6 & 0x01) { // closed

  1730.                 sc->closed_gop = 1;

  1731.                 if (e->flags & 0x40) // sequence header present

  1732.                     e->flags |= 0x80; // random access

  1733.             }

  1734.         } else if (c == 0x1b3) { // seq

  1735.             e->flags |= 0x40;

  1736.             switch ((pkt->data[i+4]>>4) & 0xf) {

  1737.             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;

  1738.             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;

  1739.             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;

  1740.             default:

  1741.                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,

  1742.                           st->codec->width, st->codec->height, 1024*1024);

  1743.             }

  1744.         } else if (c == 0x100) { // pic

  1745.             int pict_type = (pkt->data[i+2]>>3) & 0x07;

  1746.             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);

  1747.             if (pict_type == 2) { // P frame

  1748.                 e->flags |= 0x22;

  1749.                 sc->closed_gop = 0; // reset closed gop, don't matter anymore

  1750.             } else if (pict_type == 3) { // B frame

  1751.                 if (sc->closed_gop)

  1752.                     e->flags |= 0x13; // only backward prediction

  1753.                 else

  1754.                     e->flags |= 0x33;

  1755.                 sc->temporal_reordering = -1;

  1756.             } else if (!pict_type) {

  1757.                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");

  1758.                 return 0;

  1759.             }

  1760.         }

  1761.     }

  1762.     if (s->oformat != &ff_mxf_d10_muxer)

  1763.         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);

  1764.     return !!sc->codec_ul;

  1765. }

  1766. 

  1767. static uint64_t mxf_parse_timestamp(time_t timestamp)

  1768. {

  1769.     struct tm tmbuf;

  1770.     struct tm *time = gmtime_r(&timestamp, &tmbuf);

  1771.     if (!time)

  1772.         return 0;

  1773.     return (uint64_t)(time->tm_year+1900) << 48 |

  1774.            (uint64_t)(time->tm_mon+1)     << 40 |

  1775.            (uint64_t) time->tm_mday       << 32 |

  1776.                       time->tm_hour       << 24 |

  1777.                       time->tm_min        << 16 |

  1778.                       time->tm_sec        << 8;

  1779. }

  1780. 

  1781. static void mxf_gen_umid(AVFormatContext *s)

  1782. {

  1783.     MXFContext *mxf = s->priv_data;

  1784.     uint32_t seed = av_get_random_seed();

  1785.     uint64_t umid = seed + 0x5294713400000000LL;

  1786. 

  1787.     AV_WB64(mxf->umid  , umid);

  1788.     AV_WB64(mxf->umid+8, umid>>8);

  1789. 

  1790.     mxf->instance_number = seed & 0xFFFFFF;

  1791. }

  1792. 

  1793. static int mxf_write_header(AVFormatContext *s)

  1794. {

  1795.     MXFContext *mxf = s->priv_data;

  1796.     int i, ret;

  1797.     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};

  1798.     const MXFSamplesPerFrame *spf = NULL;

  1799.     AVDictionaryEntry *t;

  1800.     int64_t timestamp = 0;

  1801.     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);

  1802. 

  1803.     if (!s->nb_streams)

  1804.         return -1;

  1805. 

  1806.     for (i = 0; i < s->nb_streams; i++) {

  1807.         AVStream *st = s->streams[i];

  1808.         MXFStreamContext *sc = av_mallocz(sizeof(*sc));

  1809.         if (!sc)

  1810.             return AVERROR(ENOMEM);

  1811.         st->priv_data = sc;

  1812. 

  1813.         if ((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) {

  1814.             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");

  1815.             return -1;

  1816.         }

  1817. 

  1818.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1819.             // TODO: should be avg_frame_rate

  1820.             AVRational rate, tbc = st->time_base;

  1821.             // Default component depth to 8

  1822.             sc->component_depth = 8;

  1823.             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;

  1824.             spf = ff_mxf_get_samples_per_frame(s, tbc);

  1825.             if (!spf) {

  1826.                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",

  1827.                        tbc.den, tbc.num);

  1828.                 return AVERROR(EINVAL);

  1829.             }

  1830.             mxf->time_base = spf->time_base;

  1831.             rate = av_inv_q(mxf->time_base);

  1832.             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);

  1833.             if (!tcr)

  1834.                 tcr = av_dict_get(st->metadata, "timecode", NULL, 0);

  1835.             if (tcr)

  1836.                 ret = av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);

  1837.             else

  1838.                 ret = av_timecode_init(&mxf->tc, rate, 0, 0, s);

  1839.             if (ret < 0)

  1840.                 return ret;

  1841.             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;

  1842.             if (s->oformat == &ff_mxf_d10_muxer) {

  1843.                 if (sc->video_bit_rate == 50000000) {

  1844.                     if (mxf->time_base.den == 25) sc->index = 3;

  1845.                     else                          sc->index = 5;

  1846.                 } else if (sc->video_bit_rate == 40000000) {

  1847.                     if (mxf->time_base.den == 25) sc->index = 7;

  1848.                     else                          sc->index = 9;

  1849.                 } else if (sc->video_bit_rate == 30000000) {

  1850.                     if (mxf->time_base.den == 25) sc->index = 11;

  1851.                     else                          sc->index = 13;

  1852.                 } else {

  1853.                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");

  1854.                     return -1;

  1855.                 }

  1856. 

  1857.                 mxf->edit_unit_byte_count = KAG_SIZE; // system element

  1858.                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *

  1859.                     mxf->time_base.num / (8*mxf->time_base.den);

  1860.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1861.                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;

  1862.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1863.             }

  1864.         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1865.             if (st->codec->sample_rate != 48000) {

  1866.                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");

  1867.                 return -1;

  1868.             }

  1869.             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);

  1870.             if (s->oformat == &ff_mxf_d10_muxer) {

  1871.                 if (st->index != 1) {

  1872.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");

  1873.                     return -1;

  1874.                 }

  1875.                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&

  1876.                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {

  1877.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");

  1878.                 }

  1879.                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;

  1880.             } else

  1881.             mxf->slice_count = 1;

  1882.         }

  1883. 

  1884.         if (!sc->index) {

  1885.             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);

  1886.             if (sc->index == -1) {

  1887.                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "

  1888.                        "codec not currently supported in container\n", i);

  1889.                 return -1;

  1890.             }

  1891.         }

  1892. 

  1893.         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  1894. 

  1895.         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);

  1896.         sc->track_essence_element_key[15] = present[sc->index];

  1897.         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);

  1898. 

  1899.         if (!present[sc->index])

  1900.             mxf->essence_container_count++;

  1901.         present[sc->index]++;

  1902.     }

  1903. 

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

  1905.         mxf->essence_container_count = 1;

  1906.     }

  1907. 

  1908.     if (!(s->flags & AVFMT_FLAG_BITEXACT))

  1909.         mxf_gen_umid(s);

  1910. 

  1911.     for (i = 0; i < s->nb_streams; i++) {

  1912.         MXFStreamContext *sc = s->streams[i]->priv_data;

  1913.         // update element count

  1914.         sc->track_essence_element_key[13] = present[sc->index];

  1915.         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV

  1916.             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);

  1917.         else

  1918.             sc->order = AV_RB32(sc->track_essence_element_key+12);

  1919.     }

  1920. 

  1921.     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))

  1922.         timestamp = ff_iso8601_to_unix_time(t->value);

  1923.     if (timestamp)

  1924.         mxf->timestamp = mxf_parse_timestamp(timestamp);

  1925.     mxf->duration = -1;

  1926. 

  1927.     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));

  1928.     if (!mxf->timecode_track)

  1929.         return AVERROR(ENOMEM);

  1930.     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));

  1931.     if (!mxf->timecode_track->priv_data)

  1932.         return AVERROR(ENOMEM);

  1933.     mxf->timecode_track->index = -1;

  1934. 

  1935.     if (!spf)

  1936.         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });

  1937. 

  1938.     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)

  1939.         return -1;

  1940. 

  1941.     return 0;

  1942. }

  1943. 

  1944. static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };

  1945. 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 };

  1946. 

  1947. static void mxf_write_system_item(AVFormatContext *s)

  1948. {

  1949.     MXFContext *mxf = s->priv_data;

  1950.     AVIOContext *pb = s->pb;

  1951.     unsigned frame;

  1952.     uint32_t time_code;

  1953. 

  1954.     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  1955. 

  1956.     // write system metadata pack

  1957.     avio_write(pb, system_metadata_pack_key, 16);

  1958.     klv_encode_ber4_length(pb, 57);

  1959.     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present

  1960.     avio_w8(pb, 0x04); // content package rate

  1961.     avio_w8(pb, 0x00); // content package type

  1962.     avio_wb16(pb, 0x00); // channel handle

  1963.     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow

  1964.     if (mxf->essence_container_count > 1)

  1965.         avio_write(pb, multiple_desc_ul, 16);

  1966.     else {

  1967.         MXFStreamContext *sc = s->streams[0]->priv_data;

  1968.         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);

  1969.     }

  1970.     avio_w8(pb, 0);

  1971.     avio_wb64(pb, 0);

  1972.     avio_wb64(pb, 0); // creation date/time stamp

  1973. 

  1974.     avio_w8(pb, 0x81); // SMPTE 12M time code

  1975.     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);

  1976.     avio_wb32(pb, time_code);

  1977.     avio_wb32(pb, 0); // binary group data

  1978.     avio_wb64(pb, 0);

  1979. 

  1980.     // write system metadata package set

  1981.     avio_write(pb, system_metadata_package_set_key, 16);

  1982.     klv_encode_ber4_length(pb, 35);

  1983.     avio_w8(pb, 0x83); // UMID

  1984.     avio_wb16(pb, 0x20);

  1985.     mxf_write_umid(s, 1);

  1986. }

  1987. 

  1988. static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1989. {

  1990.     MXFContext *mxf = s->priv_data;

  1991.     AVIOContext *pb = s->pb;

  1992.     MXFStreamContext *sc = st->priv_data;

  1993.     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /

  1994.         (8*mxf->time_base.den); // frame size

  1995.     int pad;

  1996. 

  1997.     packet_size += 16 + 4;

  1998.     packet_size += klv_fill_size(packet_size);

  1999. 

  2000.     klv_encode_ber4_length(pb, pkt->size);

  2001.     avio_write(pb, pkt->data, pkt->size);

  2002. 

  2003.     // ensure CBR muxing by padding to correct video frame size

  2004.     pad = packet_size - pkt->size - 16 - 4;

  2005.     if (pad > 20) {

  2006.         avio_write(s->pb, klv_fill_key, 16);

  2007.         pad -= 16 + 4;

  2008.         klv_encode_ber4_length(s->pb, pad);

  2009.         ffio_fill(s->pb, 0, pad);

  2010.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  2011.     } else {

  2012.         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");

  2013.         ffio_fill(s->pb, 0, pad);

  2014.     }

  2015. }

  2016. 

  2017. static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  2018. {

  2019.     MXFContext *mxf = s->priv_data;

  2020.     AVIOContext *pb = s->pb;

  2021.     int frame_size = pkt->size / st->codec->block_align;

  2022.     uint8_t *samples = pkt->data;

  2023.     uint8_t *end = pkt->data + pkt->size;

  2024.     int i;

  2025. 

  2026.     klv_encode_ber4_length(pb, 4 + frame_size*4*8);

  2027. 

  2028.     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));

  2029.     avio_wl16(pb, frame_size);

  2030.     avio_w8(pb, (1<<st->codec->channels)-1);

  2031. 

  2032.     while (samples < end) {

  2033.         for (i = 0; i < st->codec->channels; i++) {

  2034.             uint32_t sample;

  2035.             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {

  2036.                 sample = AV_RL24(samples)<< 4;

  2037.                 samples += 3;

  2038.             } else {

  2039.                 sample = AV_RL16(samples)<<12;

  2040.                 samples += 2;

  2041.             }

  2042.             avio_wl32(pb, sample | i);

  2043.         }

  2044.         for (; i < 8; i++)

  2045.             avio_wl32(pb, i);

  2046.     }

  2047. }

  2048. 

  2049. static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)

  2050. {

  2051.     MXFContext *mxf = s->priv_data;

  2052.     AVIOContext *pb = s->pb;

  2053.     AVStream *st = s->streams[pkt->stream_index];

  2054.     MXFStreamContext *sc = st->priv_data;

  2055.     MXFIndexEntry ie = {0};

  2056.     int err;

  2057. 

  2058.     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {

  2059.         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count

  2060.                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {

  2061.             mxf->edit_units_count = 0;

  2062.             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");

  2063.             return err;

  2064.         }

  2065.     }

  2066. 

  2067.     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {

  2068.         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {

  2069.             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");

  2070.             return -1;

  2071.         }

  2072.     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {

  2073.         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {

  2074.             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");

  2075.             return -1;

  2076.         }

  2077.     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {

  2078.         if (!mxf_parse_dv_frame(s, st, pkt)) {

  2079.             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");

  2080.             return -1;

  2081.         }

  2082.     } else if (st->codec->codec_id == AV_CODEC_ID_H264) {

  2083.         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {

  2084.             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");

  2085.             return -1;

  2086.         }

  2087.     }

  2088. 

  2089.     if (!mxf->header_written) {

  2090.         if (mxf->edit_unit_byte_count) {

  2091.             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)

  2092.                 return err;

  2093.             mxf_write_klv_fill(s);

  2094.             mxf_write_index_table_segment(s);

  2095.         } else {

  2096.             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  2097.                 return err;

  2098.         }

  2099.         mxf->header_written = 1;

  2100.     }

  2101. 

  2102.     if (st->index == 0) {

  2103.         if (!mxf->edit_unit_byte_count &&

  2104.             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&

  2105.             !(ie.flags & 0x33)) { // I frame, Gop start

  2106.             mxf_write_klv_fill(s);

  2107.             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)

  2108.                 return err;

  2109.             mxf_write_klv_fill(s);

  2110.             mxf_write_index_table_segment(s);

  2111.         }

  2112. 

  2113.         mxf_write_klv_fill(s);

  2114.         mxf_write_system_item(s);

  2115. 

  2116.         if (!mxf->edit_unit_byte_count) {

  2117.             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2118.             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;

  2119.             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;

  2120.             mxf->body_offset += KAG_SIZE; // size of system element

  2121.         }

  2122.         mxf->edit_units_count++;

  2123.     } else if (!mxf->edit_unit_byte_count && st->index == 1) {

  2124.         mxf->index_entries[mxf->edit_units_count-1].slice_offset =

  2125.             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;

  2126.     }

  2127. 

  2128.     mxf_write_klv_fill(s);

  2129.     avio_write(pb, sc->track_essence_element_key, 16); // write key

  2130.     if (s->oformat == &ff_mxf_d10_muxer) {

  2131.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)

  2132.             mxf_write_d10_video_packet(s, st, pkt);

  2133.         else

  2134.             mxf_write_d10_audio_packet(s, st, pkt);

  2135.     } else {

  2136.         klv_encode_ber4_length(pb, pkt->size); // write length

  2137.         avio_write(pb, pkt->data, pkt->size);

  2138.         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);

  2139.     }

  2140. 

  2141.     avio_flush(pb);

  2142. 

  2143.     return 0;

  2144. }

  2145. 

  2146. static void mxf_write_random_index_pack(AVFormatContext *s)

  2147. {

  2148.     MXFContext *mxf = s->priv_data;

  2149.     AVIOContext *pb = s->pb;

  2150.     uint64_t pos = avio_tell(pb);

  2151.     int i;

  2152. 

  2153.     avio_write(pb, random_index_pack_key, 16);

  2154.     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);

  2155. 

  2156.     if (mxf->edit_unit_byte_count)

  2157.         avio_wb32(pb, 1); // BodySID of header partition

  2158.     else

  2159.         avio_wb32(pb, 0);

  2160.     avio_wb64(pb, 0); // offset of header partition

  2161. 

  2162.     for (i = 0; i < mxf->body_partitions_count; i++) {

  2163.         avio_wb32(pb, 1); // BodySID

  2164.         avio_wb64(pb, mxf->body_partition_offset[i]);

  2165.     }

  2166. 

  2167.     avio_wb32(pb, 0); // BodySID of footer partition

  2168.     avio_wb64(pb, mxf->footer_partition_offset);

  2169. 

  2170.     avio_wb32(pb, avio_tell(pb) - pos + 4);

  2171. }

  2172. 

  2173. static int mxf_write_footer(AVFormatContext *s)

  2174. {

  2175.     MXFContext *mxf = s->priv_data;

  2176.     AVIOContext *pb = s->pb;

  2177.     int err;

  2178. 

  2179.     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  2180. 

  2181.     mxf_write_klv_fill(s);

  2182.     mxf->footer_partition_offset = avio_tell(pb);

  2183.     if (mxf->edit_unit_byte_count) { // no need to repeat index

  2184.         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)

  2185.             return err;

  2186.     } else {

  2187.         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)

  2188.             return err;

  2189.         mxf_write_klv_fill(s);

  2190.         mxf_write_index_table_segment(s);

  2191.     }

  2192. 

  2193.     mxf_write_klv_fill(s);

  2194.     mxf_write_random_index_pack(s);

  2195. 

  2196.     if (s->pb->seekable) {

  2197.         avio_seek(pb, 0, SEEK_SET);

  2198.         if (mxf->edit_unit_byte_count) {

  2199.             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)

  2200.                 return err;

  2201.             mxf_write_klv_fill(s);

  2202.             mxf_write_index_table_segment(s);

  2203.         } else {

  2204.             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)

  2205.                 return err;

  2206.         }

  2207.     }

  2208. 

  2209.     ff_audio_interleave_close(s);

  2210. 

  2211.     av_freep(&mxf->index_entries);

  2212.     av_freep(&mxf->body_partition_offset);

  2213.     av_freep(&mxf->timecode_track->priv_data);

  2214.     av_freep(&mxf->timecode_track);

  2215. 

  2216.     mxf_free(s);

  2217. 

  2218.     return 0;

  2219. }

  2220. 

  2221. static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2222. {

  2223.     int i, stream_count = 0;

  2224. 

  2225.     for (i = 0; i < s->nb_streams; i++)

  2226.         stream_count += !!s->streams[i]->last_in_packet_buffer;

  2227. 

  2228.     if (stream_count && (s->nb_streams == stream_count || flush)) {

  2229.         AVPacketList *pktl = s->packet_buffer;

  2230.         if (s->nb_streams != stream_count) {

  2231.             AVPacketList *last = NULL;

  2232.             // find last packet in edit unit

  2233.             while (pktl) {

  2234.                 if (!stream_count || pktl->pkt.stream_index == 0)

  2235.                     break;

  2236.                 last = pktl;

  2237.                 pktl = pktl->next;

  2238.                 stream_count--;

  2239.             }

  2240.             // purge packet queue

  2241.             while (pktl) {

  2242.                 AVPacketList *next = pktl->next;

  2243. 

  2244.                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2245.                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2246.                 av_free_packet(&pktl->pkt);

  2247.                 av_freep(&pktl);

  2248.                 pktl = next;

  2249.             }

  2250.             if (last)

  2251.                 last->next = NULL;

  2252.             else {

  2253.                 s->packet_buffer = NULL;

  2254.                 s->packet_buffer_end= NULL;

  2255.                 goto out;

  2256.             }

  2257.             pktl = s->packet_buffer;

  2258.         }

  2259. 

  2260.         *out = pktl->pkt;

  2261.         av_dlog(s, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);

  2262.         s->packet_buffer = pktl->next;

  2263.         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2264.             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2265.         if(!s->packet_buffer)

  2266.             s->packet_buffer_end= NULL;

  2267.         av_freep(&pktl);

  2268.         return 1;

  2269.     } else {

  2270.     out:

  2271.         av_init_packet(out);

  2272.         return 0;

  2273.     }

  2274. }

  2275. 

  2276. static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)

  2277. {

  2278.     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;

  2279.     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;

  2280. 

  2281.     return next->dts > pkt->dts ||

  2282.         (next->dts == pkt->dts && sc->order < sc2->order);

  2283. }

  2284. 

  2285. static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2286. {

  2287.     return ff_audio_rechunk_interleave(s, out, pkt, flush,

  2288.                                mxf_interleave_get_packet, mxf_compare_timestamps);

  2289. }

  2290. 

  2291. static const AVOption d10_options[] = {

  2292.     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",

  2293.       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},

  2294.     { NULL },

  2295. };

  2296. 

  2297. static const AVClass mxf_d10_muxer_class = {

  2298.     .class_name     = "MXF-D10 muxer",

  2299.     .item_name      = av_default_item_name,

  2300.     .option         = d10_options,

  2301.     .version        = LIBAVUTIL_VERSION_INT,

  2302. };

  2303. 

  2304. AVOutputFormat ff_mxf_muxer = {

  2305.     .name              = "mxf",

  2306.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),

  2307.     .mime_type         = "application/mxf",

  2308.     .extensions        = "mxf",

  2309.     .priv_data_size    = sizeof(MXFContext),

  2310.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2311.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2312.     .write_header      = mxf_write_header,

  2313.     .write_packet      = mxf_write_packet,

  2314.     .write_trailer     = mxf_write_footer,

  2315.     .flags             = AVFMT_NOTIMESTAMPS,

  2316.     .interleave_packet = mxf_interleave,

  2317. };

  2318. 

  2319. AVOutputFormat ff_mxf_d10_muxer = {

  2320.     .name              = "mxf_d10",

  2321.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),

  2322.     .mime_type         = "application/mxf",

  2323.     .priv_data_size    = sizeof(MXFContext),

  2324.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2325.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2326.     .write_header      = mxf_write_header,

  2327.     .write_packet      = mxf_write_packet,

  2328.     .write_trailer     = mxf_write_footer,

  2329.     .flags             = AVFMT_NOTIMESTAMPS,

  2330.     .interleave_packet = mxf_interleave,

  2331.     .priv_class        = &mxf_d10_muxer_class,

  2332. };