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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 RP210: SMPTE Metadata Dictionary

  30.  * SMPTE RP224: Registry of SMPTE Universal Labels

  31.  */

  32. 

  33. #include <inttypes.h>

  34. #include <math.h>

  35. #include <time.h>

  36. 

  37. #include "libavutil/opt.h"

  38. #include "libavutil/random_seed.h"

  39. #include "libavutil/timecode.h"

  40. #include "libavutil/avassert.h"

  41. #include "libavcodec/bytestream.h"

  42. #include "libavcodec/dnxhddata.h"

  43. #include "audiointerleave.h"

  44. #include "avformat.h"

  45. #include "avio_internal.h"

  46. #include "internal.h"

  47. #include "mxf.h"

  48. #include "config.h"

  49. 

  50. extern AVOutputFormat ff_mxf_d10_muxer;

  51. 

  52. #define EDIT_UNITS_PER_BODY 250

  53. #define KAG_SIZE 512

  54. 

  55. typedef struct {

  56.     int local_tag;

  57.     UID uid;

  58. } MXFLocalTagPair;

  59. 

  60. typedef struct {

  61.     uint8_t flags;

  62.     uint64_t offset;

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

  64.     uint16_t temporal_ref;

  65. } MXFIndexEntry;

  66. 

  67. typedef struct {

  68.     AudioInterleaveContext aic;

  69.     UID track_essence_element_key;

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

  71.     const UID *codec_ul;

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

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

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

  75.     int component_depth;

  76.     int temporal_reordering;

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

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

  79.     int video_bit_rate;

  80. } MXFStreamContext;

  81. 

  82. typedef struct {

  83.     UID container_ul;

  84.     UID element_ul;

  85.     UID codec_ul;

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

  87. } MXFContainerEssenceEntry;

  88. 

  89. static const struct {

  90.     enum AVCodecID id;

  91.     int index;

  92. } mxf_essence_mappings[] = {

  93.     { AV_CODEC_ID_MPEG2VIDEO, 0 },

  94.     { AV_CODEC_ID_PCM_S24LE,  1 },

  95.     { AV_CODEC_ID_PCM_S16LE,  1 },

  96.     { AV_CODEC_ID_DVVIDEO,   15 },

  97.     { AV_CODEC_ID_DNXHD,     24 },

  98.     { AV_CODEC_ID_NONE }

  99. };

  100. 

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

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

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

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

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

  106. 

  107. static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {

  108.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },

  109.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  110.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },

  111.       mxf_write_mpegvideo_desc },

  112.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },

  113.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },

  114.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  115.       mxf_write_aes3_desc },

  116.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },

  117.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },

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

  119.       mxf_write_wav_desc },

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

  121.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },

  122.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  124.       mxf_write_cdci_desc },

  125.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },

  126.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

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

  128.       mxf_write_generic_sound_desc },

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

  130.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },

  131.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  133.       mxf_write_cdci_desc },

  134.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },

  135.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  136.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  137.       mxf_write_generic_sound_desc },

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

  139.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },

  140.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  142.       mxf_write_cdci_desc },

  143.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },

  144.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  145.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  146.       mxf_write_generic_sound_desc },

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

  148.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },

  149.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  151.       mxf_write_cdci_desc },

  152.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },

  153.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  154.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  155.       mxf_write_generic_sound_desc },

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

  157.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },

  158.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

  159.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },

  160.       mxf_write_cdci_desc },

  161.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },

  162.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  163.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  164.       mxf_write_generic_sound_desc },

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

  166.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },

  167.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },

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

  169.       mxf_write_cdci_desc },

  170.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },

  171.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },

  172.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },

  173.       mxf_write_generic_sound_desc },

  174.     // DV Unknown

  175.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },

  176.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  177.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },

  178.       mxf_write_cdci_desc },

  179.     // DV25 525/60

  180.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },

  181.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  182.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },

  183.       mxf_write_cdci_desc },

  184.     // DV25 625/50

  185.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },

  186.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  187.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },

  188.       mxf_write_cdci_desc },

  189.     // DV50 525/60

  190.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },

  191.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  192.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },

  193.       mxf_write_cdci_desc },

  194.     // DV50 625/50

  195.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },

  196.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  197.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },

  198.       mxf_write_cdci_desc },

  199.     // DV100 1080/60

  200.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },

  201.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  202.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },

  203.       mxf_write_cdci_desc },

  204.     // DV100 1080/50

  205.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },

  206.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  207.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },

  208.       mxf_write_cdci_desc },

  209.     // DV100 720/60

  210.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },

  211.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  212.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },

  213.       mxf_write_cdci_desc },

  214.     // DV100 720/50

  215.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },

  216.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },

  217.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },

  218.       mxf_write_cdci_desc },

  219.     // DNxHD 1080p 10bit high

  220.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  221.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  222.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },

  223.       mxf_write_cdci_desc },

  224.     // DNxHD 1080p 8bit medium

  225.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  226.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  227.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },

  228.       mxf_write_cdci_desc },

  229.     // DNxHD 1080p 8bit high

  230.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  231.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  232.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },

  233.       mxf_write_cdci_desc },

  234.     // DNxHD 1080i 10bit high

  235.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  236.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  237.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },

  238.       mxf_write_cdci_desc },

  239.     // DNxHD 1080i 8bit medium

  240.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  241.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  242.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },

  243.       mxf_write_cdci_desc },

  244.     // DNxHD 1080i 8bit high

  245.     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  246.       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  247.       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },

  248.       mxf_write_cdci_desc },

  249.     // DNxHD 720p 10bit

  250.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  251.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  252.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },

  253.       mxf_write_cdci_desc },

  254.     // DNxHD 720p 8bit high

  255.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  256.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  257.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },

  258.       mxf_write_cdci_desc },

  259.     // DNxHD 720p 8bit medium

  260.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  261.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  262.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },

  263.       mxf_write_cdci_desc },

  264.     // DNxHD 720p 8bit low

  265.     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },

  266.       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },

  267.       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },

  268.       mxf_write_cdci_desc },

  269.     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  270.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  271.       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },

  272.       NULL },

  273. };

  274. 

  275. typedef struct MXFContext {

  276.     AVClass *av_class;

  277.     int64_t footer_partition_offset;

  278.     int essence_container_count;

  279.     AVRational time_base;

  280.     int header_written;

  281.     MXFIndexEntry *index_entries;

  282.     unsigned edit_units_count;

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

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

  285.     int last_indexed_edit_unit;

  286.     uint64_t *body_partition_offset;

  287.     unsigned body_partitions_count;

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

  289.     uint64_t duration;

  290.     AVTimecode tc;       ///< timecode context

  291.     AVStream *timecode_track;

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

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

  294.     uint64_t body_offset;

  295.     uint32_t instance_number;

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

  297.     int channel_count;

  298. } MXFContext;

  299. 

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

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

  302. 

  303. /**

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

  305.  */

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

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

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

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

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

  311. 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

  312. 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

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

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

  315. 

  316. /**

  317.  * partial key for header metadata

  318.  */

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

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

  321. 

  322. /**

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

  324.  */

  325. static const MXFLocalTagPair mxf_local_tag_batch[] = {

  326.     // preface set

  327.     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */

  328.     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */

  329.     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */

  330.     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */

  331.     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */

  332.     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */

  333.     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */

  334.     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */

  335.     // Identification

  336.     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */

  337.     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */

  338.     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */

  339.     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */

  340.     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */

  341.     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */

  342.     // Content Storage

  343.     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */

  344.     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */

  345.     // Essence Container Data

  346.     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */

  347.     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */

  348.     // Package

  349.     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */

  350.     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */

  351.     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */

  352.     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */

  353.     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */

  354.     // Track

  355.     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */

  356.     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */

  357.     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */

  358.     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */

  359.     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */

  360.     // Sequence

  361.     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */

  362.     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */

  363.     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */

  364.     // Source Clip

  365.     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */

  366.     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */

  367.     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */

  368.     // Timecode Component

  369.     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */

  370.     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */

  371.     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */

  372.     // File Descriptor

  373.     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */

  374.     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */

  375.     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */

  376.     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */

  377.     // Generic Picture Essence Descriptor

  378.     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */

  379.     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */

  380.     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */

  381.     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */

  382.     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */

  383.     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */

  384.     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */

  385.     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */

  386.     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */

  387.     // CDCI Picture Essence Descriptor

  388.     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */

  389.     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */

  390.     // Generic Sound Essence Descriptor

  391.     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */

  392.     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */

  393.     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */

  394.     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */

  395.     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */

  396.     // Index Table Segment

  397.     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */

  398.     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */

  399.     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */

  400.     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */

  401.     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */

  402.     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */

  403.     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */

  404.     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */

  405.     // MPEG video Descriptor

  406.     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */

  407.     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */

  408.     // Wave Audio Essence Descriptor

  409.     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */

  410.     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */

  411. };

  412. 

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

  414. {

  415.     avio_write(pb, uuid_base, 12);

  416.     avio_wb16(pb, type);

  417.     avio_wb16(pb, value);

  418. }

  419. 

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

  421. {

  422.     MXFContext *mxf = s->priv_data;

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

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

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

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

  427. }

  428. 

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

  430. {

  431.     avio_wb32(pb, ref_count);

  432.     avio_wb32(pb, 16);

  433. }

  434. 

  435. static int klv_ber_length(uint64_t len)

  436. {

  437.     if (len < 128)

  438.         return 1;

  439.     else

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

  441. }

  442. 

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

  444. {

  445.     // Determine the best BER size

  446.     int size;

  447.     if (len < 128) {

  448.         //short form

  449.         avio_w8(pb, len);

  450.         return 1;

  451.     }

  452. 

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

  454. 

  455.     // long form

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

  457.     while(size) {

  458.         size--;

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

  460.     }

  461.     return 0;

  462. }

  463. 

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

  465. {

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

  467.     avio_wb24(pb, len);

  468. }

  469. 

  470. /*

  471.  * Get essence container ul index

  472.  */

  473. static int mxf_get_essence_container_ul_index(enum AVCodecID id)

  474. {

  475.     int i;

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

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

  478.             return mxf_essence_mappings[i].index;

  479.     return -1;

  480. }

  481. 

  482. static void mxf_write_primer_pack(AVFormatContext *s)

  483. {

  484.     AVIOContext *pb = s->pb;

  485.     int local_tag_number, i = 0;

  486. 

  487.     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);

  488. 

  489.     avio_write(pb, primer_pack_key, 16);

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

  491. 

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

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

  494. 

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

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

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

  498.     }

  499. }

  500. 

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

  502. {

  503.     avio_wb16(pb, tag);

  504.     avio_wb16(pb, size);

  505. }

  506. 

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

  508. {

  509.     avio_write(pb, header_metadata_key, 13);

  510.     avio_wb24(pb, value);

  511. }

  512. 

  513. static void mxf_free(AVFormatContext *s)

  514. {

  515.     int i;

  516. 

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

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

  519.         av_freep(&st->priv_data);

  520.     }

  521. }

  522. 

  523. static const MXFCodecUL *mxf_get_data_definition_ul(int type)

  524. {

  525.     const MXFCodecUL *uls = ff_mxf_data_definition_uls;

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

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

  528.             break;

  529.         uls++;

  530.     }

  531.     return uls;

  532. }

  533. 

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

  535. #define DESCRIPTOR_COUNT(essence_container_count) \

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

  537. 

  538. static void mxf_write_essence_container_refs(AVFormatContext *s)

  539. {

  540.     MXFContext *c = s->priv_data;

  541.     AVIOContext *pb = s->pb;

  542.     int i;

  543. 

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

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

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

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

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

  549.     }

  550. 

  551.     if (c->essence_container_count > 1)

  552.         avio_write(pb, multiple_desc_ul, 16);

  553. }

  554. 

  555. static void mxf_write_preface(AVFormatContext *s)

  556. {

  557.     MXFContext *mxf = s->priv_data;

  558.     AVIOContext *pb = s->pb;

  559. 

  560.     mxf_write_metadata_key(pb, 0x012f00);

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

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

  563. 

  564.     // write preface set uid

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

  566.     mxf_write_uuid(pb, Preface, 0);

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

  568. 

  569.     // last modified date

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

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

  572. 

  573.     // write version

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

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

  576. 

  577.     // write identification_refs

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

  579.     mxf_write_refs_count(pb, 1);

  580.     mxf_write_uuid(pb, Identification, 0);

  581. 

  582.     // write content_storage_refs

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

  584.     mxf_write_uuid(pb, ContentStorage, 0);

  585. 

  586.     // operational pattern

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

  588.     avio_write(pb, op1a_ul, 16);

  589. 

  590.     // write essence_container_refs

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

  592.     mxf_write_essence_container_refs(s);

  593. 

  594.     // write dm_scheme_refs

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

  596.     avio_wb64(pb, 0);

  597. }

  598. 

  599. /*

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

  601.  */

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

  603. {

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

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

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

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

  608. }

  609. 

  610. static void mxf_write_identification(AVFormatContext *s)

  611. {

  612.     MXFContext *mxf = s->priv_data;

  613.     AVIOContext *pb = s->pb;

  614.     const char *company = "FFmpeg";

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

  616.     const char *version;

  617.     int length;

  618. 

  619.     mxf_write_metadata_key(pb, 0x013000);

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

  621. 

  622.     version = s->flags & AVFMT_FLAG_BITEXACT ?

  623.         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);

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

  625.     klv_encode_ber_length(pb, length);

  626. 

  627.     // write uid

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

  629.     mxf_write_uuid(pb, Identification, 0);

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

  631. 

  632.     // write generation uid

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

  634.     mxf_write_uuid(pb, Identification, 1);

  635. 

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

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

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

  639. 

  640.     // write product uid

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

  642.     mxf_write_uuid(pb, Identification, 2);

  643. 

  644.     // modification date

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

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

  647. }

  648. 

  649. static void mxf_write_content_storage(AVFormatContext *s)

  650. {

  651.     AVIOContext *pb = s->pb;

  652. 

  653.     mxf_write_metadata_key(pb, 0x011800);

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

  655.     klv_encode_ber_length(pb, 92);

  656. 

  657.     // write uid

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

  659.     mxf_write_uuid(pb, ContentStorage, 0);

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

  661. 

  662.     // write package reference

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

  664.     mxf_write_refs_count(pb, 2);

  665.     mxf_write_uuid(pb, MaterialPackage, 0);

  666.     mxf_write_uuid(pb, SourcePackage, 0);

  667. 

  668.     // write essence container data

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

  670.     mxf_write_refs_count(pb, 1);

  671.     mxf_write_uuid(pb, EssenceContainerData, 0);

  672. }

  673. 

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

  675. {

  676.     MXFContext *mxf = s->priv_data;

  677.     AVIOContext *pb = s->pb;

  678.     MXFStreamContext *sc = st->priv_data;

  679. 

  680.     mxf_write_metadata_key(pb, 0x013b00);

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

  682.     klv_encode_ber_length(pb, 80);

  683. 

  684.     // write track uid

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

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

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

  688. 

  689.     // write track id

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

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

  692. 

  693.     // write track number

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

  695.     if (type == MaterialPackage)

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

  697.     else

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

  699. 

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

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

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

  703. 

  704.     // write origin

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

  706.     avio_wb64(pb, 0);

  707. 

  708.     // write sequence refs

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

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

  711. }

  712. 

  713. 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 };

  714. 

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

  716. {

  717.     MXFContext *mxf = s->priv_data;

  718.     AVIOContext *pb = s->pb;

  719. 

  720.     // find data define uls

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

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

  723.         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);

  724.     else {

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

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

  727.     }

  728. 

  729.     // write duration

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

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

  732. }

  733. 

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

  735. {

  736.     MXFContext *mxf = s->priv_data;

  737.     AVIOContext *pb = s->pb;

  738.     enum MXFMetadataSetType component;

  739. 

  740.     mxf_write_metadata_key(pb, 0x010f00);

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

  742.     klv_encode_ber_length(pb, 80);

  743. 

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

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

  746. 

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

  748.     mxf_write_common_fields(s, st);

  749. 

  750.     // write structural component

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

  752.     mxf_write_refs_count(pb, 1);

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

  754.         component = TimecodeComponent;

  755.     else

  756.         component = SourceClip;

  757.     if (type == SourcePackage)

  758.         component += TypeBottom;

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

  760. }

  761. 

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

  763. {

  764.     MXFContext *mxf = s->priv_data;

  765.     AVIOContext *pb = s->pb;

  766. 

  767.     mxf_write_metadata_key(pb, 0x011400);

  768.     klv_encode_ber_length(pb, 75);

  769. 

  770.     // UID

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

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

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

  774. 

  775.     mxf_write_common_fields(s, st);

  776. 

  777.     // Start Time Code

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

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

  780. 

  781.     // Rounded Time Code Base

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

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

  784. 

  785.     // Drop Frame

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

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

  788. }

  789. 

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

  791. {

  792.     AVIOContext *pb = s->pb;

  793.     int i;

  794. 

  795.     mxf_write_metadata_key(pb, 0x011100);

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

  797.     klv_encode_ber_length(pb, 108);

  798. 

  799.     // write uid

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

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

  802. 

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

  804.     mxf_write_common_fields(s, st);

  805. 

  806.     // write start_position

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

  808.     avio_wb64(pb, 0);

  809. 

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

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

  812.     if (type == SourcePackage) {

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

  814.             avio_wb64(pb, 0);

  815.     } else

  816.         mxf_write_umid(s, 1);

  817. 

  818.     // write source track id

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

  820.     if (type == SourcePackage)

  821.         avio_wb32(pb, 0);

  822.     else

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

  824. }

  825. 

  826. static void mxf_write_multi_descriptor(AVFormatContext *s)

  827. {

  828.     MXFContext *mxf = s->priv_data;

  829.     AVIOContext *pb = s->pb;

  830.     const uint8_t *ul;

  831.     int i;

  832. 

  833.     mxf_write_metadata_key(pb, 0x014400);

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

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

  836. 

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

  838.     mxf_write_uuid(pb, MultipleDescriptor, 0);

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

  840. 

  841.     // write sample rate

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

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

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

  845. 

  846.     // write essence container ul

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

  848.     if (mxf->essence_container_count > 1)

  849.         ul = multiple_desc_ul;

  850.     else {

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

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

  853.     }

  854.     avio_write(pb, ul, 16);

  855. 

  856.     // write sub descriptor refs

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

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

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

  860.         mxf_write_uuid(pb, SubDescriptor, i);

  861. }

  862. 

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

  864. {

  865.     MXFContext *mxf = s->priv_data;

  866.     MXFStreamContext *sc = st->priv_data;

  867.     AVIOContext *pb = s->pb;

  868. 

  869.     avio_write(pb, key, 16);

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

  871. 

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

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

  874. 

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

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

  877. 

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

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

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

  881. 

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

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

  884. }

  885. 

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

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

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

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

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

  891. 

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

  893. {

  894.     MXFStreamContext *sc = st->priv_data;

  895.     AVIOContext *pb = s->pb;

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

  897.     int display_height;

  898.     int f1, f2;

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

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

  901.         desc_size += 5;

  902. 

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

  904. 

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

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

  907. 

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

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

  910. 

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

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

  913. 

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

  915.         display_height = 576;

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

  917.         display_height = 486;

  918.     else

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

  920. 

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

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

  923. 

  924.     // component depth

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

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

  927. 

  928.     // horizontal subsampling

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

  930.     avio_wb32(pb, 2);

  931. 

  932.     // frame layout

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

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

  935. 

  936.     // video line map

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

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

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

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

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

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

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

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

  945.     }

  946. 

  947.     if (!sc->interlaced) {

  948.         f2  = 0;

  949.         f1 *= 2;

  950.     }

  951. 

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

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

  954.     avio_wb32(pb, 4);

  955.     avio_wb32(pb, f1);

  956.     if (sc->interlaced)

  957.         avio_wb32(pb, f2);

  958. 

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

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

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

  962. 

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

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

  965. 

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

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

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

  969.     }

  970. 

  971. }

  972. 

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

  974. {

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

  976. }

  977. 

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

  979. {

  980.     AVIOContext *pb = s->pb;

  981.     MXFStreamContext *sc = st->priv_data;

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

  983. 

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

  985. 

  986.     // bit rate

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

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

  989. 

  990.     // profile and level

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

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

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

  994.     avio_w8(pb, profile_and_level);

  995. }

  996. 

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

  998. {

  999.     AVIOContext *pb = s->pb;

  1000.     MXFContext *mxf = s->priv_data;

  1001.     int show_warnings = !mxf->footer_partition_offset;

  1002. 

  1003.     mxf_write_generic_desc(s, st, key, size+5+12+8+8);

  1004. 

  1005.     // audio locked

  1006.     mxf_write_local_tag(pb, 1, 0x3D02);

  1007.     avio_w8(pb, 1);

  1008. 

  1009.     // write audio sampling rate

  1010.     mxf_write_local_tag(pb, 8, 0x3D03);

  1011.     avio_wb32(pb, st->codec->sample_rate);

  1012.     avio_wb32(pb, 1);

  1013. 

  1014.     mxf_write_local_tag(pb, 4, 0x3D07);

  1015.     if (mxf->channel_count == -1) {

  1016.         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))

  1017.             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");

  1018.         avio_wb32(pb, st->codec->channels);

  1019.     } else if (s->oformat == &ff_mxf_d10_muxer) {

  1020.         if (show_warnings && (mxf->channel_count < st->codec->channels))

  1021.             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");

  1022.         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))

  1023.             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");

  1024.         avio_wb32(pb, mxf->channel_count);

  1025.     } else {

  1026.         if (show_warnings)

  1027.             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");

  1028.         avio_wb32(pb, st->codec->channels);

  1029.     }

  1030. 

  1031.     mxf_write_local_tag(pb, 4, 0x3D01);

  1032.     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));

  1033. }

  1034. 

  1035. static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)

  1036. {

  1037.     AVIOContext *pb = s->pb;

  1038. 

  1039.     mxf_write_generic_sound_common(s, st, key, size+6+8);

  1040. 

  1041.     mxf_write_local_tag(pb, 2, 0x3D0A);

  1042.     avio_wb16(pb, st->codec->block_align);

  1043. 

  1044.     // avg bytes per sec

  1045.     mxf_write_local_tag(pb, 4, 0x3D09);

  1046.     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);

  1047. }

  1048. 

  1049. static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)

  1050. {

  1051.     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);

  1052. }

  1053. 

  1054. static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)

  1055. {

  1056.     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);

  1057. }

  1058. 

  1059. static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)

  1060. {

  1061.     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);

  1062. }

  1063. 

  1064. static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)

  1065. {

  1066.     MXFContext *mxf = s->priv_data;

  1067.     AVIOContext *pb = s->pb;

  1068.     int i, track_count = s->nb_streams+1;

  1069. 

  1070.     if (type == MaterialPackage) {

  1071.         mxf_write_metadata_key(pb, 0x013600);

  1072.         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);

  1073.         klv_encode_ber_length(pb, 92 + 16*track_count);

  1074.     } else {

  1075.         mxf_write_metadata_key(pb, 0x013700);

  1076.         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);

  1077.         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference

  1078.     }

  1079. 

  1080.     // write uid

  1081.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1082.     mxf_write_uuid(pb, type, 0);

  1083.     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);

  1084.     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);

  1085. 

  1086.     // write package umid

  1087.     mxf_write_local_tag(pb, 32, 0x4401);

  1088.     mxf_write_umid(s, type == SourcePackage);

  1089.     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);

  1090. 

  1091.     // package creation date

  1092.     mxf_write_local_tag(pb, 8, 0x4405);

  1093.     avio_wb64(pb, mxf->timestamp);

  1094. 

  1095.     // package modified date

  1096.     mxf_write_local_tag(pb, 8, 0x4404);

  1097.     avio_wb64(pb, mxf->timestamp);

  1098. 

  1099.     // write track refs

  1100.     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);

  1101.     mxf_write_refs_count(pb, track_count);

  1102.     mxf_write_uuid(pb, type == MaterialPackage ? Track :

  1103.                    Track + TypeBottom, -1); // timecode track

  1104.     for (i = 0; i < s->nb_streams; i++)

  1105.         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);

  1106. 

  1107.     // write multiple descriptor reference

  1108.     if (type == SourcePackage) {

  1109.         mxf_write_local_tag(pb, 16, 0x4701);

  1110.         if (s->nb_streams > 1) {

  1111.             mxf_write_uuid(pb, MultipleDescriptor, 0);

  1112.             mxf_write_multi_descriptor(s);

  1113.         } else

  1114.             mxf_write_uuid(pb, SubDescriptor, 0);

  1115.     }

  1116. 

  1117.     // write timecode track

  1118.     mxf_write_track(s, mxf->timecode_track, type);

  1119.     mxf_write_sequence(s, mxf->timecode_track, type);

  1120.     mxf_write_timecode_component(s, mxf->timecode_track, type);

  1121. 

  1122.     for (i = 0; i < s->nb_streams; i++) {

  1123.         AVStream *st = s->streams[i];

  1124.         mxf_write_track(s, st, type);

  1125.         mxf_write_sequence(s, st, type);

  1126.         mxf_write_structural_component(s, st, type);

  1127. 

  1128.         if (type == SourcePackage) {

  1129.             MXFStreamContext *sc = st->priv_data;

  1130.             mxf_essence_container_uls[sc->index].write_desc(s, st);

  1131.         }

  1132.     }

  1133. }

  1134. 

  1135. static int mxf_write_essence_container_data(AVFormatContext *s)

  1136. {

  1137.     AVIOContext *pb = s->pb;

  1138. 

  1139.     mxf_write_metadata_key(pb, 0x012300);

  1140.     klv_encode_ber_length(pb, 72);

  1141. 

  1142.     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID

  1143.     mxf_write_uuid(pb, EssenceContainerData, 0);

  1144. 

  1145.     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID

  1146.     mxf_write_umid(s, 1);

  1147. 

  1148.     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID

  1149.     avio_wb32(pb, 1);

  1150. 

  1151.     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID

  1152.     avio_wb32(pb, 2);

  1153. 

  1154.     return 0;

  1155. }

  1156. 

  1157. static int mxf_write_header_metadata_sets(AVFormatContext *s)

  1158. {

  1159.     mxf_write_preface(s);

  1160.     mxf_write_identification(s);

  1161.     mxf_write_content_storage(s);

  1162.     mxf_write_package(s, MaterialPackage);

  1163.     mxf_write_package(s, SourcePackage);

  1164.     mxf_write_essence_container_data(s);

  1165.     return 0;

  1166. }

  1167. 

  1168. static unsigned klv_fill_size(uint64_t size)

  1169. {

  1170.     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));

  1171.     if (pad < 20) // smallest fill item possible

  1172.         return pad + KAG_SIZE;

  1173.     else

  1174.         return pad & (KAG_SIZE-1);

  1175. }

  1176. 

  1177. static void mxf_write_index_table_segment(AVFormatContext *s)

  1178. {

  1179.     MXFContext *mxf = s->priv_data;

  1180.     AVIOContext *pb = s->pb;

  1181.     int i, j, temporal_reordering = 0;

  1182.     int key_index = mxf->last_key_index;

  1183. 

  1184.     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);

  1185. 

  1186.     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)

  1187.         return;

  1188. 

  1189.     avio_write(pb, index_table_segment_key, 16);

  1190. 

  1191.     if (mxf->edit_unit_byte_count) {

  1192.         klv_encode_ber_length(pb, 80);

  1193.     } else {

  1194.         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +

  1195.                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));

  1196.     }

  1197. 

  1198.     // instance id

  1199.     mxf_write_local_tag(pb, 16, 0x3C0A);

  1200.     mxf_write_uuid(pb, IndexTableSegment, 0);

  1201. 

  1202.     // index edit rate

  1203.     mxf_write_local_tag(pb, 8, 0x3F0B);

  1204.     avio_wb32(pb, mxf->time_base.den);

  1205.     avio_wb32(pb, mxf->time_base.num);

  1206. 

  1207.     // index start position

  1208.     mxf_write_local_tag(pb, 8, 0x3F0C);

  1209.     avio_wb64(pb, mxf->last_indexed_edit_unit);

  1210. 

  1211.     // index duration

  1212.     mxf_write_local_tag(pb, 8, 0x3F0D);

  1213.     if (mxf->edit_unit_byte_count)

  1214.         avio_wb64(pb, 0); // index table covers whole container

  1215.     else

  1216.         avio_wb64(pb, mxf->edit_units_count);

  1217. 

  1218.     // edit unit byte count

  1219.     mxf_write_local_tag(pb, 4, 0x3F05);

  1220.     avio_wb32(pb, mxf->edit_unit_byte_count);

  1221. 

  1222.     // index sid

  1223.     mxf_write_local_tag(pb, 4, 0x3F06);

  1224.     avio_wb32(pb, 2);

  1225. 

  1226.     // body sid

  1227.     mxf_write_local_tag(pb, 4, 0x3F07);

  1228.     avio_wb32(pb, 1);

  1229. 

  1230.     if (!mxf->edit_unit_byte_count) {

  1231.         // real slice count - 1

  1232.         mxf_write_local_tag(pb, 1, 0x3F08);

  1233.         avio_w8(pb, mxf->slice_count);

  1234. 

  1235.         // delta entry array

  1236.         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);

  1237.         avio_wb32(pb, s->nb_streams+1); // num of entries

  1238.         avio_wb32(pb, 6);               // size of one entry

  1239.         // write system item delta entry

  1240.         avio_w8(pb, 0);

  1241.         avio_w8(pb, 0); // slice entry

  1242.         avio_wb32(pb, 0); // element delta

  1243.         for (i = 0; i < s->nb_streams; i++) {

  1244.             AVStream *st = s->streams[i];

  1245.             MXFStreamContext *sc = st->priv_data;

  1246.             avio_w8(pb, sc->temporal_reordering);

  1247.             if (sc->temporal_reordering)

  1248.                 temporal_reordering = 1;

  1249.             if (i == 0) { // video track

  1250.                 avio_w8(pb, 0); // slice number

  1251.                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill

  1252.             } else { // audio track

  1253.                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;

  1254.                 audio_frame_size += klv_fill_size(audio_frame_size);

  1255.                 avio_w8(pb, 1);

  1256.                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta

  1257.             }

  1258.         }

  1259. 

  1260.         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);

  1261.         avio_wb32(pb, mxf->edit_units_count);  // num of entries

  1262.         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry

  1263. 

  1264.         for (i = 0; i < mxf->edit_units_count; i++) {

  1265.             int temporal_offset = 0;

  1266. 

  1267.             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame

  1268.                 mxf->last_key_index = key_index;

  1269.                 key_index = i;

  1270.             }

  1271. 

  1272.             if (temporal_reordering) {

  1273.                 int pic_num_in_gop = i - key_index;

  1274.                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {

  1275.                     for (j = key_index; j < mxf->edit_units_count; j++) {

  1276.                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)

  1277.                             break;

  1278.                     }

  1279.                     if (j == mxf->edit_units_count)

  1280.                         av_log(s, AV_LOG_WARNING, "missing frames\n");

  1281.                     temporal_offset = j - key_index - pic_num_in_gop;

  1282.                 }

  1283.             }

  1284.             avio_w8(pb, temporal_offset);

  1285. 

  1286.             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction

  1287.                 avio_w8(pb, mxf->last_key_index - i);

  1288.             } else {

  1289.                 avio_w8(pb, key_index - i); // key frame offset

  1290.                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward

  1291.                     mxf->last_key_index = key_index;

  1292.             }

  1293. 

  1294.             if (!(mxf->index_entries[i].flags & 0x33) && // I frame

  1295.                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)

  1296.                 mxf->index_entries[i].flags |= 0x80; // random access

  1297.             avio_w8(pb, mxf->index_entries[i].flags);

  1298.             // stream offset

  1299.             avio_wb64(pb, mxf->index_entries[i].offset);

  1300.             if (s->nb_streams > 1)

  1301.                 avio_wb32(pb, mxf->index_entries[i].slice_offset);

  1302.         }

  1303. 

  1304.         mxf->last_key_index = key_index - mxf->edit_units_count;

  1305.         mxf->last_indexed_edit_unit += mxf->edit_units_count;

  1306.         mxf->edit_units_count = 0;

  1307.     }

  1308. }

  1309. 

  1310. static void mxf_write_klv_fill(AVFormatContext *s)

  1311. {

  1312.     unsigned pad = klv_fill_size(avio_tell(s->pb));

  1313.     if (pad) {

  1314.         avio_write(s->pb, klv_fill_key, 16);

  1315.         pad -= 16 + 4;

  1316.         klv_encode_ber4_length(s->pb, pad);

  1317.         ffio_fill(s->pb, 0, pad);

  1318.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  1319.     }

  1320. }

  1321. 

  1322. static int mxf_write_partition(AVFormatContext *s, int bodysid,

  1323.                                 int indexsid,

  1324.                                 const uint8_t *key, int write_metadata)

  1325. {

  1326.     MXFContext *mxf = s->priv_data;

  1327.     AVIOContext *pb = s->pb;

  1328.     int64_t header_byte_count_offset;

  1329.     unsigned index_byte_count = 0;

  1330.     uint64_t partition_offset = avio_tell(pb);

  1331.     int err;

  1332. 

  1333.     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)

  1334.         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +

  1335.             12+mxf->edit_units_count*(11+mxf->slice_count*4);

  1336.     else if (mxf->edit_unit_byte_count && indexsid)

  1337.         index_byte_count = 80;

  1338. 

  1339.     if (index_byte_count) {

  1340.         // add encoded ber length

  1341.         index_byte_count += 16 + klv_ber_length(index_byte_count);

  1342.         index_byte_count += klv_fill_size(index_byte_count);

  1343.     }

  1344. 

  1345.     if (!memcmp(key, body_partition_key, 16)) {

  1346.         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,

  1347.                                      sizeof(*mxf->body_partition_offset))) < 0) {

  1348.             mxf->body_partitions_count = 0;

  1349.             return err;

  1350.         }

  1351.         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;

  1352.     }

  1353. 

  1354.     // write klv

  1355.     avio_write(pb, key, 16);

  1356.     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));

  1357. 

  1358.     // write partition value

  1359.     avio_wb16(pb, 1); // majorVersion

  1360.     avio_wb16(pb, 2); // minorVersion

  1361.     avio_wb32(pb, KAG_SIZE); // KAGSize

  1362. 

  1363.     avio_wb64(pb, partition_offset); // ThisPartition

  1364. 

  1365.     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)

  1366.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition

  1367.     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)

  1368.         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition

  1369.     else

  1370.         avio_wb64(pb, 0);

  1371. 

  1372.     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition

  1373. 

  1374.     // set offset

  1375.     header_byte_count_offset = avio_tell(pb);

  1376.     avio_wb64(pb, 0); // headerByteCount, update later

  1377. 

  1378.     // indexTable

  1379.     avio_wb64(pb, index_byte_count); // indexByteCount

  1380.     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID

  1381. 

  1382.     // BodyOffset

  1383.     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {

  1384.         avio_wb64(pb, mxf->body_offset);

  1385.     } else

  1386.         avio_wb64(pb, 0);

  1387. 

  1388.     avio_wb32(pb, bodysid); // bodySID

  1389. 

  1390.     // operational pattern

  1391.     avio_write(pb, op1a_ul, 16);

  1392. 

  1393.     // essence container

  1394.     mxf_write_essence_container_refs(s);

  1395. 

  1396.     if (write_metadata) {

  1397.         // mark the start of the headermetadata and calculate metadata size

  1398.         int64_t pos, start;

  1399.         unsigned header_byte_count;

  1400. 

  1401.         mxf_write_klv_fill(s);

  1402.         start = avio_tell(s->pb);

  1403.         mxf_write_primer_pack(s);

  1404.         mxf_write_header_metadata_sets(s);

  1405.         pos = avio_tell(s->pb);

  1406.         header_byte_count = pos - start + klv_fill_size(pos);

  1407. 

  1408.         // update header_byte_count

  1409.         avio_seek(pb, header_byte_count_offset, SEEK_SET);

  1410.         avio_wb64(pb, header_byte_count);

  1411.         avio_seek(pb, pos, SEEK_SET);

  1412.     }

  1413. 

  1414.     avio_flush(pb);

  1415. 

  1416.     return 0;

  1417. }

  1418. 

  1419. static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,

  1420. AVPacket *pkt)

  1421. {

  1422.     MXFContext *mxf = s->priv_data;

  1423.     MXFStreamContext *sc = st->priv_data;

  1424.     int i, cid;

  1425.     uint8_t* header_cid;

  1426.     int frame_size = 0;

  1427. 

  1428.     if (mxf->header_written)

  1429.         return 1;

  1430. 

  1431.     if (pkt->size < 43)

  1432.         return -1;

  1433. 

  1434.     header_cid = pkt->data + 0x28;

  1435.     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];

  1436. 

  1437.     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)

  1438.         return -1;

  1439. 

  1440.     switch (cid) {

  1441.     case 1235:

  1442.         sc->index = 24;

  1443.         sc->component_depth = 10;

  1444.         break;

  1445.     case 1237:

  1446.         sc->index = 25;

  1447.         break;

  1448.     case 1238:

  1449.         sc->index = 26;

  1450.         break;

  1451.     case 1241:

  1452.         sc->index = 27;

  1453.         sc->component_depth = 10;

  1454.         break;

  1455.     case 1242:

  1456.         sc->index = 28;

  1457.         break;

  1458.     case 1243:

  1459.         sc->index = 29;

  1460.         break;

  1461.     case 1250:

  1462.         sc->index = 30;

  1463.         sc->component_depth = 10;

  1464.         break;

  1465.     case 1251:

  1466.         sc->index = 31;

  1467.         break;

  1468.     case 1252:

  1469.         sc->index = 32;

  1470.         break;

  1471.     case 1253:

  1472.         sc->index = 33;

  1473.         break;

  1474.     default:

  1475.         return -1;

  1476.     }

  1477. 

  1478.     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  1479.     sc->aspect_ratio = (AVRational){ 16, 9 };

  1480. 

  1481.     mxf->edit_unit_byte_count = KAG_SIZE;

  1482.     for (i = 0; i < s->nb_streams; i++) {

  1483.         AVStream *st = s->streams[i];

  1484.         MXFStreamContext *sc = st->priv_data;

  1485.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1486.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1487.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1488.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1489.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1490.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1491.         }

  1492.     }

  1493. 

  1494.     return 1;

  1495. }

  1496. 

  1497. static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1498. {

  1499.     MXFContext *mxf = s->priv_data;

  1500.     MXFStreamContext *sc = st->priv_data;

  1501.     uint8_t *vs_pack, *vsc_pack;

  1502.     int i, ul_index, frame_size, stype, pal;

  1503. 

  1504.     if (mxf->header_written)

  1505.         return 1;

  1506. 

  1507.     // Check for minimal frame size

  1508.     if (pkt->size < 120000)

  1509.         return -1;

  1510. 

  1511.     vs_pack  = pkt->data + 80*5 + 48;

  1512.     vsc_pack = pkt->data + 80*5 + 53;

  1513.     stype    = vs_pack[3] & 0x1f;

  1514.     pal      = (vs_pack[3] >> 5) & 0x1;

  1515. 

  1516.     if ((vs_pack[2] & 0x07) == 0x02)

  1517.         sc->aspect_ratio = (AVRational){ 16, 9 };

  1518.     else

  1519.         sc->aspect_ratio = (AVRational){ 4, 3 };

  1520. 

  1521.     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;

  1522.     // TODO: fix dv encoder to set proper FF/FS value in VSC pack

  1523.     // and set field dominance accordingly

  1524.     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);

  1525. 

  1526.     switch (stype) {

  1527.     case 0x18: // DV100 720p

  1528.         ul_index = 6 + pal;

  1529.         frame_size = pal ? 288000 : 240000;

  1530.         if (sc->interlaced) {

  1531.             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");

  1532.             sc->interlaced = 0;

  1533.         }

  1534.         break;

  1535.     case 0x14: // DV100 1080i

  1536.         ul_index = 4 + pal;

  1537.         frame_size = pal ? 576000 : 480000;

  1538.         break;

  1539.     case 0x04: // DV50

  1540.         ul_index = 2 + pal;

  1541.         frame_size = pal ? 288000 : 240000;

  1542.         break;

  1543.     default: // DV25

  1544.         ul_index = 0 + pal;

  1545.         frame_size = pal ? 144000 : 120000;

  1546.     }

  1547. 

  1548.     sc->index = ul_index + 16;

  1549.     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;

  1550. 

  1551.     mxf->edit_unit_byte_count = KAG_SIZE;

  1552.     for (i = 0; i < s->nb_streams; i++) {

  1553.         AVStream *st = s->streams[i];

  1554.         MXFStreamContext *sc = st->priv_data;

  1555.         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1556.             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;

  1557.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1558.         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1559.             mxf->edit_unit_byte_count += 16 + 4 + frame_size;

  1560.             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1561.         }

  1562.     }

  1563. 

  1564.     return 1;

  1565. }

  1566. 

  1567. static const UID mxf_mpeg2_codec_uls[] = {

  1568.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame

  1569.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP

  1570.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame

  1571.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP

  1572.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame

  1573.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP

  1574.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame

  1575.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP

  1576.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame

  1577.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP

  1578. };

  1579. 

  1580. static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)

  1581. {

  1582.     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;

  1583. 

  1584.     if (avctx->profile == 4) { // Main

  1585.         if (avctx->level == 8) // Main

  1586.             return &mxf_mpeg2_codec_uls[0+long_gop];

  1587.         else if (avctx->level == 4) // High

  1588.             return &mxf_mpeg2_codec_uls[4+long_gop];

  1589.         else if (avctx->level == 6) // High 14

  1590.             return &mxf_mpeg2_codec_uls[8+long_gop];

  1591.     } else if (avctx->profile == 0) { // 422

  1592.         if (avctx->level == 5) // Main

  1593.             return &mxf_mpeg2_codec_uls[2+long_gop];

  1594.         else if (avctx->level == 2) // High

  1595.             return &mxf_mpeg2_codec_uls[6+long_gop];

  1596.     }

  1597.     return NULL;

  1598. }

  1599. 

  1600. static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,

  1601.                                  AVPacket *pkt, MXFIndexEntry *e)

  1602. {

  1603.     MXFStreamContext *sc = st->priv_data;

  1604.     uint32_t c = -1;

  1605.     int i;

  1606. 

  1607.     for(i = 0; i < pkt->size - 4; i++) {

  1608.         c = (c<<8) + pkt->data[i];

  1609.         if (c == 0x1b5) {

  1610.             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext

  1611.                 st->codec->profile = pkt->data[i+1] & 0x07;

  1612.                 st->codec->level   = pkt->data[i+2] >> 4;

  1613.             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext

  1614.                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame

  1615.                 if (sc->interlaced)

  1616.                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first

  1617.                 break;

  1618.             }

  1619.         } else if (c == 0x1b8) { // gop

  1620.             if (pkt->data[i+4]>>6 & 0x01) { // closed

  1621.                 sc->closed_gop = 1;

  1622.                 if (e->flags & 0x40) // sequence header present

  1623.                     e->flags |= 0x80; // random access

  1624.             }

  1625.         } else if (c == 0x1b3) { // seq

  1626.             e->flags |= 0x40;

  1627.             switch ((pkt->data[i+4]>>4) & 0xf) {

  1628.             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;

  1629.             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;

  1630.             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;

  1631.             default:

  1632.                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,

  1633.                           st->codec->width, st->codec->height, 1024*1024);

  1634.             }

  1635.         } else if (c == 0x100) { // pic

  1636.             int pict_type = (pkt->data[i+2]>>3) & 0x07;

  1637.             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);

  1638.             if (pict_type == 2) { // P frame

  1639.                 e->flags |= 0x22;

  1640.                 sc->closed_gop = 0; // reset closed gop, don't matter anymore

  1641.             } else if (pict_type == 3) { // B frame

  1642.                 if (sc->closed_gop)

  1643.                     e->flags |= 0x13; // only backward prediction

  1644.                 else

  1645.                     e->flags |= 0x33;

  1646.                 sc->temporal_reordering = -1;

  1647.             } else if (!pict_type) {

  1648.                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");

  1649.                 return 0;

  1650.             }

  1651.         }

  1652.     }

  1653.     if (s->oformat != &ff_mxf_d10_muxer)

  1654.         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);

  1655.     return !!sc->codec_ul;

  1656. }

  1657. 

  1658. static uint64_t mxf_parse_timestamp(time_t timestamp)

  1659. {

  1660.     struct tm *time = gmtime(&timestamp);

  1661.     if (!time)

  1662.         return 0;

  1663.     return (uint64_t)(time->tm_year+1900) << 48 |

  1664.            (uint64_t)(time->tm_mon+1)     << 40 |

  1665.            (uint64_t) time->tm_mday       << 32 |

  1666.                       time->tm_hour       << 24 |

  1667.                       time->tm_min        << 16 |

  1668.                       time->tm_sec        << 8;

  1669. }

  1670. 

  1671. static void mxf_gen_umid(AVFormatContext *s)

  1672. {

  1673.     MXFContext *mxf = s->priv_data;

  1674.     uint32_t seed = av_get_random_seed();

  1675.     uint64_t umid = seed + 0x5294713400000000LL;

  1676. 

  1677.     AV_WB64(mxf->umid  , umid);

  1678.     AV_WB64(mxf->umid+8, umid>>8);

  1679. 

  1680.     mxf->instance_number = seed & 0xFFFFFF;

  1681. }

  1682. 

  1683. static int mxf_write_header(AVFormatContext *s)

  1684. {

  1685.     MXFContext *mxf = s->priv_data;

  1686.     int i, ret;

  1687.     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};

  1688.     const MXFSamplesPerFrame *spf = NULL;

  1689.     AVDictionaryEntry *t;

  1690.     int64_t timestamp = 0;

  1691.     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);

  1692. 

  1693.     if (!s->nb_streams)

  1694.         return -1;

  1695. 

  1696.     for (i = 0; i < s->nb_streams; i++) {

  1697.         AVStream *st = s->streams[i];

  1698.         MXFStreamContext *sc = av_mallocz(sizeof(*sc));

  1699.         if (!sc)

  1700.             return AVERROR(ENOMEM);

  1701.         st->priv_data = sc;

  1702. 

  1703.         if ((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) {

  1704.             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");

  1705.             return -1;

  1706.         }

  1707. 

  1708.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {

  1709.             // TODO: should be avg_frame_rate

  1710.             AVRational rate, tbc = st->time_base;

  1711.             // Default component depth to 8

  1712.             sc->component_depth = 8;

  1713.             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;

  1714.             spf = ff_mxf_get_samples_per_frame(s, tbc);

  1715.             if (!spf) {

  1716.                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",

  1717.                        tbc.den, tbc.num);

  1718.                 return AVERROR(EINVAL);

  1719.             }

  1720.             mxf->time_base = spf->time_base;

  1721.             rate = av_inv_q(mxf->time_base);

  1722.             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);

  1723.             if (!tcr)

  1724.                 tcr = av_dict_get(st->metadata, "timecode", NULL, 0);

  1725.             if (tcr)

  1726.                 ret = av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);

  1727.             else

  1728.                 ret = av_timecode_init(&mxf->tc, rate, 0, 0, s);

  1729.             if (ret < 0)

  1730.                 return ret;

  1731.             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;

  1732.             if (s->oformat == &ff_mxf_d10_muxer) {

  1733.                 if (sc->video_bit_rate == 50000000) {

  1734.                     if (mxf->time_base.den == 25) sc->index = 3;

  1735.                     else                          sc->index = 5;

  1736.                 } else if (sc->video_bit_rate == 40000000) {

  1737.                     if (mxf->time_base.den == 25) sc->index = 7;

  1738.                     else                          sc->index = 9;

  1739.                 } else if (sc->video_bit_rate == 30000000) {

  1740.                     if (mxf->time_base.den == 25) sc->index = 11;

  1741.                     else                          sc->index = 13;

  1742.                 } else {

  1743.                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");

  1744.                     return -1;

  1745.                 }

  1746. 

  1747.                 mxf->edit_unit_byte_count = KAG_SIZE; // system element

  1748.                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *

  1749.                     mxf->time_base.num / (8*mxf->time_base.den);

  1750.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1751.                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;

  1752.                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);

  1753.             }

  1754.         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {

  1755.             if (st->codec->sample_rate != 48000) {

  1756.                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");

  1757.                 return -1;

  1758.             }

  1759.             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);

  1760.             if (s->oformat == &ff_mxf_d10_muxer) {

  1761.                 if (st->index != 1) {

  1762.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");

  1763.                     return -1;

  1764.                 }

  1765.                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&

  1766.                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {

  1767.                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");

  1768.                 }

  1769.                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;

  1770.             } else

  1771.             mxf->slice_count = 1;

  1772.         }

  1773. 

  1774.         if (!sc->index) {

  1775.             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);

  1776.             if (sc->index == -1) {

  1777.                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "

  1778.                        "codec not currently supported in container\n", i);

  1779.                 return -1;

  1780.             }

  1781.         }

  1782. 

  1783.         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  1784. 

  1785.         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);

  1786.         sc->track_essence_element_key[15] = present[sc->index];

  1787.         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);

  1788. 

  1789.         if (!present[sc->index])

  1790.             mxf->essence_container_count++;

  1791.         present[sc->index]++;

  1792.     }

  1793. 

  1794.     if (s->oformat == &ff_mxf_d10_muxer) {

  1795.         mxf->essence_container_count = 1;

  1796.     }

  1797. 

  1798.     if (!(s->flags & AVFMT_FLAG_BITEXACT))

  1799.         mxf_gen_umid(s);

  1800. 

  1801.     for (i = 0; i < s->nb_streams; i++) {

  1802.         MXFStreamContext *sc = s->streams[i]->priv_data;

  1803.         // update element count

  1804.         sc->track_essence_element_key[13] = present[sc->index];

  1805.         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV

  1806.             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);

  1807.         else

  1808.             sc->order = AV_RB32(sc->track_essence_element_key+12);

  1809.     }

  1810. 

  1811.     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))

  1812.         timestamp = ff_iso8601_to_unix_time(t->value);

  1813.     if (timestamp)

  1814.         mxf->timestamp = mxf_parse_timestamp(timestamp);

  1815.     mxf->duration = -1;

  1816. 

  1817.     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));

  1818.     if (!mxf->timecode_track)

  1819.         return AVERROR(ENOMEM);

  1820.     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));

  1821.     if (!mxf->timecode_track->priv_data)

  1822.         return AVERROR(ENOMEM);

  1823.     mxf->timecode_track->index = -1;

  1824. 

  1825.     if (!spf)

  1826.         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });

  1827. 

  1828.     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)

  1829.         return -1;

  1830. 

  1831.     return 0;

  1832. }

  1833. 

  1834. static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };

  1835. 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 };

  1836. 

  1837. static void mxf_write_system_item(AVFormatContext *s)

  1838. {

  1839.     MXFContext *mxf = s->priv_data;

  1840.     AVIOContext *pb = s->pb;

  1841.     unsigned frame;

  1842.     uint32_t time_code;

  1843. 

  1844.     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  1845. 

  1846.     // write system metadata pack

  1847.     avio_write(pb, system_metadata_pack_key, 16);

  1848.     klv_encode_ber4_length(pb, 57);

  1849.     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present

  1850.     avio_w8(pb, 0x04); // content package rate

  1851.     avio_w8(pb, 0x00); // content package type

  1852.     avio_wb16(pb, 0x00); // channel handle

  1853.     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow

  1854.     if (mxf->essence_container_count > 1)

  1855.         avio_write(pb, multiple_desc_ul, 16);

  1856.     else {

  1857.         MXFStreamContext *sc = s->streams[0]->priv_data;

  1858.         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);

  1859.     }

  1860.     avio_w8(pb, 0);

  1861.     avio_wb64(pb, 0);

  1862.     avio_wb64(pb, 0); // creation date/time stamp

  1863. 

  1864.     avio_w8(pb, 0x81); // SMPTE 12M time code

  1865.     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);

  1866.     avio_wb32(pb, time_code);

  1867.     avio_wb32(pb, 0); // binary group data

  1868.     avio_wb64(pb, 0);

  1869. 

  1870.     // write system metadata package set

  1871.     avio_write(pb, system_metadata_package_set_key, 16);

  1872.     klv_encode_ber4_length(pb, 35);

  1873.     avio_w8(pb, 0x83); // UMID

  1874.     avio_wb16(pb, 0x20);

  1875.     mxf_write_umid(s, 1);

  1876. }

  1877. 

  1878. static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1879. {

  1880.     MXFContext *mxf = s->priv_data;

  1881.     AVIOContext *pb = s->pb;

  1882.     MXFStreamContext *sc = st->priv_data;

  1883.     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /

  1884.         (8*mxf->time_base.den); // frame size

  1885.     int pad;

  1886. 

  1887.     packet_size += 16 + 4;

  1888.     packet_size += klv_fill_size(packet_size);

  1889. 

  1890.     klv_encode_ber4_length(pb, pkt->size);

  1891.     avio_write(pb, pkt->data, pkt->size);

  1892. 

  1893.     // ensure CBR muxing by padding to correct video frame size

  1894.     pad = packet_size - pkt->size - 16 - 4;

  1895.     if (pad > 20) {

  1896.         avio_write(s->pb, klv_fill_key, 16);

  1897.         pad -= 16 + 4;

  1898.         klv_encode_ber4_length(s->pb, pad);

  1899.         ffio_fill(s->pb, 0, pad);

  1900.         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));

  1901.     } else {

  1902.         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");

  1903.         ffio_fill(s->pb, 0, pad);

  1904.     }

  1905. }

  1906. 

  1907. static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)

  1908. {

  1909.     MXFContext *mxf = s->priv_data;

  1910.     AVIOContext *pb = s->pb;

  1911.     int frame_size = pkt->size / st->codec->block_align;

  1912.     uint8_t *samples = pkt->data;

  1913.     uint8_t *end = pkt->data + pkt->size;

  1914.     int i;

  1915. 

  1916.     klv_encode_ber4_length(pb, 4 + frame_size*4*8);

  1917. 

  1918.     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));

  1919.     avio_wl16(pb, frame_size);

  1920.     avio_w8(pb, (1<<st->codec->channels)-1);

  1921. 

  1922.     while (samples < end) {

  1923.         for (i = 0; i < st->codec->channels; i++) {

  1924.             uint32_t sample;

  1925.             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {

  1926.                 sample = AV_RL24(samples)<< 4;

  1927.                 samples += 3;

  1928.             } else {

  1929.                 sample = AV_RL16(samples)<<12;

  1930.                 samples += 2;

  1931.             }

  1932.             avio_wl32(pb, sample | i);

  1933.         }

  1934.         for (; i < 8; i++)

  1935.             avio_wl32(pb, i);

  1936.     }

  1937. }

  1938. 

  1939. static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)

  1940. {

  1941.     MXFContext *mxf = s->priv_data;

  1942.     AVIOContext *pb = s->pb;

  1943.     AVStream *st = s->streams[pkt->stream_index];

  1944.     MXFStreamContext *sc = st->priv_data;

  1945.     MXFIndexEntry ie = {0};

  1946.     int err;

  1947. 

  1948.     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {

  1949.         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count

  1950.                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {

  1951.             mxf->edit_units_count = 0;

  1952.             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");

  1953.             return err;

  1954.         }

  1955.     }

  1956. 

  1957.     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {

  1958.         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {

  1959.             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");

  1960.             return -1;

  1961.         }

  1962.     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {

  1963.         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {

  1964.             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");

  1965.             return -1;

  1966.         }

  1967.     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {

  1968.         if (!mxf_parse_dv_frame(s, st, pkt)) {

  1969.             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");

  1970.             return -1;

  1971.         }

  1972.     }

  1973. 

  1974.     if (!mxf->header_written) {

  1975.         if (mxf->edit_unit_byte_count) {

  1976.             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)

  1977.                 return err;

  1978.             mxf_write_klv_fill(s);

  1979.             mxf_write_index_table_segment(s);

  1980.         } else {

  1981.             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)

  1982.                 return err;

  1983.         }

  1984.         mxf->header_written = 1;

  1985.     }

  1986. 

  1987.     if (st->index == 0) {

  1988.         if (!mxf->edit_unit_byte_count &&

  1989.             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&

  1990.             !(ie.flags & 0x33)) { // I frame, Gop start

  1991.             mxf_write_klv_fill(s);

  1992.             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)

  1993.                 return err;

  1994.             mxf_write_klv_fill(s);

  1995.             mxf_write_index_table_segment(s);

  1996.         }

  1997. 

  1998.         mxf_write_klv_fill(s);

  1999.         mxf_write_system_item(s);

  2000. 

  2001.         if (!mxf->edit_unit_byte_count) {

  2002.             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;

  2003.             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;

  2004.             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;

  2005.             mxf->body_offset += KAG_SIZE; // size of system element

  2006.         }

  2007.         mxf->edit_units_count++;

  2008.     } else if (!mxf->edit_unit_byte_count && st->index == 1) {

  2009.         mxf->index_entries[mxf->edit_units_count-1].slice_offset =

  2010.             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;

  2011.     }

  2012. 

  2013.     mxf_write_klv_fill(s);

  2014.     avio_write(pb, sc->track_essence_element_key, 16); // write key

  2015.     if (s->oformat == &ff_mxf_d10_muxer) {

  2016.         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)

  2017.             mxf_write_d10_video_packet(s, st, pkt);

  2018.         else

  2019.             mxf_write_d10_audio_packet(s, st, pkt);

  2020.     } else {

  2021.         klv_encode_ber4_length(pb, pkt->size); // write length

  2022.         avio_write(pb, pkt->data, pkt->size);

  2023.         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);

  2024.     }

  2025. 

  2026.     avio_flush(pb);

  2027. 

  2028.     return 0;

  2029. }

  2030. 

  2031. static void mxf_write_random_index_pack(AVFormatContext *s)

  2032. {

  2033.     MXFContext *mxf = s->priv_data;

  2034.     AVIOContext *pb = s->pb;

  2035.     uint64_t pos = avio_tell(pb);

  2036.     int i;

  2037. 

  2038.     avio_write(pb, random_index_pack_key, 16);

  2039.     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);

  2040. 

  2041.     if (mxf->edit_unit_byte_count)

  2042.         avio_wb32(pb, 1); // BodySID of header partition

  2043.     else

  2044.         avio_wb32(pb, 0);

  2045.     avio_wb64(pb, 0); // offset of header partition

  2046. 

  2047.     for (i = 0; i < mxf->body_partitions_count; i++) {

  2048.         avio_wb32(pb, 1); // BodySID

  2049.         avio_wb64(pb, mxf->body_partition_offset[i]);

  2050.     }

  2051. 

  2052.     avio_wb32(pb, 0); // BodySID of footer partition

  2053.     avio_wb64(pb, mxf->footer_partition_offset);

  2054. 

  2055.     avio_wb32(pb, avio_tell(pb) - pos + 4);

  2056. }

  2057. 

  2058. static int mxf_write_footer(AVFormatContext *s)

  2059. {

  2060.     MXFContext *mxf = s->priv_data;

  2061.     AVIOContext *pb = s->pb;

  2062.     int err;

  2063. 

  2064.     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;

  2065. 

  2066.     mxf_write_klv_fill(s);

  2067.     mxf->footer_partition_offset = avio_tell(pb);

  2068.     if (mxf->edit_unit_byte_count) { // no need to repeat index

  2069.         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)

  2070.             return err;

  2071.     } else {

  2072.         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)

  2073.             return err;

  2074.         mxf_write_klv_fill(s);

  2075.         mxf_write_index_table_segment(s);

  2076.     }

  2077. 

  2078.     mxf_write_klv_fill(s);

  2079.     mxf_write_random_index_pack(s);

  2080. 

  2081.     if (s->pb->seekable) {

  2082.         avio_seek(pb, 0, SEEK_SET);

  2083.         if (mxf->edit_unit_byte_count) {

  2084.             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)

  2085.                 return err;

  2086.             mxf_write_klv_fill(s);

  2087.             mxf_write_index_table_segment(s);

  2088.         } else {

  2089.             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)

  2090.                 return err;

  2091.         }

  2092.     }

  2093. 

  2094.     ff_audio_interleave_close(s);

  2095. 

  2096.     av_freep(&mxf->index_entries);

  2097.     av_freep(&mxf->body_partition_offset);

  2098.     av_freep(&mxf->timecode_track->priv_data);

  2099.     av_freep(&mxf->timecode_track);

  2100. 

  2101.     mxf_free(s);

  2102. 

  2103.     return 0;

  2104. }

  2105. 

  2106. static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2107. {

  2108.     int i, stream_count = 0;

  2109. 

  2110.     for (i = 0; i < s->nb_streams; i++)

  2111.         stream_count += !!s->streams[i]->last_in_packet_buffer;

  2112. 

  2113.     if (stream_count && (s->nb_streams == stream_count || flush)) {

  2114.         AVPacketList *pktl = s->packet_buffer;

  2115.         if (s->nb_streams != stream_count) {

  2116.             AVPacketList *last = NULL;

  2117.             // find last packet in edit unit

  2118.             while (pktl) {

  2119.                 if (!stream_count || pktl->pkt.stream_index == 0)

  2120.                     break;

  2121.                 last = pktl;

  2122.                 pktl = pktl->next;

  2123.                 stream_count--;

  2124.             }

  2125.             // purge packet queue

  2126.             while (pktl) {

  2127.                 AVPacketList *next = pktl->next;

  2128. 

  2129.                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2130.                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2131.                 av_free_packet(&pktl->pkt);

  2132.                 av_freep(&pktl);

  2133.                 pktl = next;

  2134.             }

  2135.             if (last)

  2136.                 last->next = NULL;

  2137.             else {

  2138.                 s->packet_buffer = NULL;

  2139.                 s->packet_buffer_end= NULL;

  2140.                 goto out;

  2141.             }

  2142.             pktl = s->packet_buffer;

  2143.         }

  2144. 

  2145.         *out = pktl->pkt;

  2146.         av_dlog(s, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);

  2147.         s->packet_buffer = pktl->next;

  2148.         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)

  2149.             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;

  2150.         if(!s->packet_buffer)

  2151.             s->packet_buffer_end= NULL;

  2152.         av_freep(&pktl);

  2153.         return 1;

  2154.     } else {

  2155.     out:

  2156.         av_init_packet(out);

  2157.         return 0;

  2158.     }

  2159. }

  2160. 

  2161. static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)

  2162. {

  2163.     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;

  2164.     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;

  2165. 

  2166.     return next->dts > pkt->dts ||

  2167.         (next->dts == pkt->dts && sc->order < sc2->order);

  2168. }

  2169. 

  2170. static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)

  2171. {

  2172.     return ff_audio_rechunk_interleave(s, out, pkt, flush,

  2173.                                mxf_interleave_get_packet, mxf_compare_timestamps);

  2174. }

  2175. 

  2176. static const AVOption d10_options[] = {

  2177.     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",

  2178.       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},

  2179.     { NULL },

  2180. };

  2181. 

  2182. static const AVClass mxf_d10_muxer_class = {

  2183.     .class_name     = "MXF-D10 muxer",

  2184.     .item_name      = av_default_item_name,

  2185.     .option         = d10_options,

  2186.     .version        = LIBAVUTIL_VERSION_INT,

  2187. };

  2188. 

  2189. AVOutputFormat ff_mxf_muxer = {

  2190.     .name              = "mxf",

  2191.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),

  2192.     .mime_type         = "application/mxf",

  2193.     .extensions        = "mxf",

  2194.     .priv_data_size    = sizeof(MXFContext),

  2195.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2196.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2197.     .write_header      = mxf_write_header,

  2198.     .write_packet      = mxf_write_packet,

  2199.     .write_trailer     = mxf_write_footer,

  2200.     .flags             = AVFMT_NOTIMESTAMPS,

  2201.     .interleave_packet = mxf_interleave,

  2202. };

  2203. 

  2204. AVOutputFormat ff_mxf_d10_muxer = {

  2205.     .name              = "mxf_d10",

  2206.     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),

  2207.     .mime_type         = "application/mxf",

  2208.     .priv_data_size    = sizeof(MXFContext),

  2209.     .audio_codec       = AV_CODEC_ID_PCM_S16LE,

  2210.     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,

  2211.     .write_header      = mxf_write_header,

  2212.     .write_packet      = mxf_write_packet,

  2213.     .write_trailer     = mxf_write_footer,

  2214.     .flags             = AVFMT_NOTIMESTAMPS,

  2215.     .interleave_packet = mxf_interleave,

  2216.     .priv_class        = &mxf_d10_muxer_class,

  2217. };