git.sesse.net Git - ffmpeg/blob - libavformat/mxfenc.c

   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 //#define DEBUG
  34
  35 #include <math.h>
  36 #include <time.h>
  37
  38 #include "libavutil/opt.h"
  39 #include "libavutil/random_seed.h"
  40 #include "libavutil/timecode.h"
  41 #include "libavutil/avassert.h"
  42 #include "libavcodec/bytestream.h"
  43 #include "libavcodec/dnxhddata.h"
  44 #include "audiointerleave.h"
  45 #include "avformat.h"
  46 #include "internal.h"
  47 #include "mxf.h"
  48 #include "config.h"
  49
  50 typedef struct {
  51     struct AVRational time_base;
  52     int samples_per_frame[6];
  53 } MXFSamplesPerFrame;
  54
  55 static const MXFSamplesPerFrame mxf_samples_per_frames[] = {
  56     { { 1001, 24000 }, { 2002, 0,    0,    0,    0,    0 } }, // FILM 23.976
  57     { { 1, 24},        { 2000, 0,    0,    0,    0,    0 } }, // FILM 24
  58     { { 1001, 30000 }, { 1602, 1601, 1602, 1601, 1602, 0 } }, // NTSC 29.97
  59     { { 1001, 60000 }, { 801,  801,  801,  801,  800,  0 } }, // NTSC 59.94
  60     { { 1, 25 },       { 1920, 0,    0,    0,    0,    0 } }, // PAL 25
  61     { { 1, 50 },       { 960,  0,    0,    0,    0,    0 } }, // PAL 50
  62 };
  63
  64 static const MXFSamplesPerFrame* mxf_get_samples_per_frame(AVFormatContext *s, AVRational time_base)
  65 {
  66     int i;
  67     for (i = 0; i < FF_ARRAY_ELEMS(mxf_samples_per_frames); i++) {
  68         if (!av_cmp_q(mxf_samples_per_frames[i].time_base, time_base))
  69             return &mxf_samples_per_frames[i];
  70     }
  71
  72     // Find closest container time base for approximative codec time base like 1/29.97, 1/30, ...
  73     for (i = 0; i < FF_ARRAY_ELEMS(mxf_samples_per_frames); i++) {
  74         if (fabs(av_q2d(mxf_samples_per_frames[i].time_base) - av_q2d(time_base)) < 0.0001) {
  75             av_log(s, AV_LOG_WARNING, "%d/%d input time base matched %d/%d container time base\n",
  76                    time_base.num, time_base.den,
  77                    mxf_samples_per_frames[i].time_base.num, mxf_samples_per_frames[i].time_base.den);
  78             return &mxf_samples_per_frames[i];
  79         }
  80     }
  81     return NULL;
  82 }
  83
  84 extern AVOutputFormat ff_mxf_d10_muxer;
  85
  86 #define EDIT_UNITS_PER_BODY 250
  87 #define KAG_SIZE 512
  88
  89 typedef struct {
  90     int local_tag;
  91     UID uid;
  92 } MXFLocalTagPair;
  93
  94 typedef struct {
  95     uint8_t flags;
  96     uint64_t offset;
  97     unsigned slice_offset; ///< offset of audio slice
  98     uint16_t temporal_ref;
  99 } MXFIndexEntry;
 100
 101 typedef struct {
 102     AudioInterleaveContext aic;
 103     UID track_essence_element_key;
 104     int index;               ///< index in mxf_essence_container_uls table
 105     const UID *codec_ul;
 106     int order;               ///< interleaving order if dts are equal
 107     int interlaced;          ///< whether picture is interlaced
 108     int field_dominance;     ///< tff=1, bff=2
 109     int component_depth;
 110     int temporal_reordering;
 111     AVRational aspect_ratio; ///< display aspect ratio
 112     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
 113 } MXFStreamContext;
 114
 115 typedef struct {
 116     UID container_ul;
 117     UID element_ul;
 118     UID codec_ul;
 119     void (*write_desc)(AVFormatContext *, AVStream *);
 120 } MXFContainerEssenceEntry;
 121
 122 static const struct {
 123     enum AVCodecID id;
 124     int index;
 125 } mxf_essence_mappings[] = {
 126     { AV_CODEC_ID_MPEG2VIDEO, 0 },
 127     { AV_CODEC_ID_PCM_S24LE,  1 },
 128     { AV_CODEC_ID_PCM_S16LE,  1 },
 129     { AV_CODEC_ID_DVVIDEO,   15 },
 130     { AV_CODEC_ID_DNXHD,     24 },
 131     { AV_CODEC_ID_NONE }
 132 };
 133
 134 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
 135 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
 136 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
 137 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
 138 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
 139
 140 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
 141     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 142       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 143       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 144       mxf_write_mpegvideo_desc },
 145     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 146       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 147       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 148       mxf_write_aes3_desc },
 149     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 150       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 151       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 152       mxf_write_wav_desc },
 153     // D-10 625/50 PAL 50mb/s
 154     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 155       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 156       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 157       mxf_write_cdci_desc },
 158     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 159       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 160       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 161       mxf_write_generic_sound_desc },
 162     // D-10 525/60 NTSC 50mb/s
 163     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 164       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 165       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 166       mxf_write_cdci_desc },
 167     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 168       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 169       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 170       mxf_write_generic_sound_desc },
 171     // D-10 625/50 PAL 40mb/s
 172     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 173       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 174       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 175       mxf_write_cdci_desc },
 176     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 177       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 178       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 179       mxf_write_generic_sound_desc },
 180     // D-10 525/60 NTSC 40mb/s
 181     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 182       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 183       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 184       mxf_write_cdci_desc },
 185     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 186       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 187       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 188       mxf_write_generic_sound_desc },
 189     // D-10 625/50 PAL 30mb/s
 190     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 191       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 192       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 193       mxf_write_cdci_desc },
 194     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 195       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 196       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 197       mxf_write_generic_sound_desc },
 198     // D-10 525/60 NTSC 30mb/s
 199     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 200       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 201       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 202       mxf_write_cdci_desc },
 203     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 204       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 205       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 206       mxf_write_generic_sound_desc },
 207     // DV Unknwon
 208     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
 209       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 210       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
 211       mxf_write_cdci_desc },
 212     // DV25 525/60
 213     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },
 214       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 215       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 216       mxf_write_cdci_desc },
 217     // DV25 625/50
 218     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },
 219       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 220       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },
 221       mxf_write_cdci_desc },
 222     // DV50 525/60
 223     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },
 224       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 225       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },
 226       mxf_write_cdci_desc },
 227     // DV50 625/50
 228     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },
 229       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 230       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },
 231       mxf_write_cdci_desc },
 232     // DV100 1080/60
 233     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },
 234       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 235       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },
 236       mxf_write_cdci_desc },
 237     // DV100 1080/50
 238     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },
 239       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 240       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },
 241       mxf_write_cdci_desc },
 242     // DV100 720/60
 243     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },
 244       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 245       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },
 246       mxf_write_cdci_desc },
 247     // DV100 720/50
 248     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },
 249       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 250       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },
 251       mxf_write_cdci_desc },
 252     // DNxHD 1080p 10bit high
 253     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 254       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 255       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
 256       mxf_write_cdci_desc },
 257     // DNxHD 1080p 8bit medium
 258     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 259       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 260       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },
 261       mxf_write_cdci_desc },
 262     // DNxHD 1080p 8bit high
 263     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 264       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 265       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },
 266       mxf_write_cdci_desc },
 267     // DNxHD 1080i 10bit high
 268     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 269       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 270       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },
 271       mxf_write_cdci_desc },
 272     // DNxHD 1080i 8bit medium
 273     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 274       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 275       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },
 276       mxf_write_cdci_desc },
 277     // DNxHD 1080i 8bit high
 278     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 279       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 280       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },
 281       mxf_write_cdci_desc },
 282     // DNxHD 720p 10bit
 283     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 284       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 285       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },
 286       mxf_write_cdci_desc },
 287     // DNxHD 720p 8bit high
 288     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 289       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 290       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },
 291       mxf_write_cdci_desc },
 292     // DNxHD 720p 8bit medium
 293     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 294       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 295       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },
 296       mxf_write_cdci_desc },
 297     // DNxHD 720p 8bit low
 298     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 299       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 300       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },
 301       mxf_write_cdci_desc },
 302     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 303       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 304       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 305       NULL },
 306 };
 307
 308 typedef struct MXFContext {
 309     AVClass *av_class;
 310     int64_t footer_partition_offset;
 311     int essence_container_count;
 312     AVRational time_base;
 313     int header_written;
 314     MXFIndexEntry *index_entries;
 315     unsigned edit_units_count;
 316     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 317     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 318     int last_indexed_edit_unit;
 319     uint64_t *body_partition_offset;
 320     unsigned body_partitions_count;
 321     int last_key_index;  ///< index of last key frame
 322     uint64_t duration;
 323     AVTimecode tc;       ///< timecode context
 324     AVStream *timecode_track;
 325     int timecode_base;       ///< rounded time code base (25 or 30)
 326     int edit_unit_byte_count; ///< fixed edit unit byte count
 327     uint64_t body_offset;
 328     uint32_t instance_number;
 329     uint8_t umid[16];        ///< unique material identifier
 330 } MXFContext;
 331
 332 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 333 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 334
 335 /**
 336  * complete key for operation pattern, partitions, and primer pack
 337  */
 338 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 339 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 340 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 341 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 342 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 343 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
 344 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
 345 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 346 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 347
 348 /**
 349  * partial key for header metadata
 350  */
 351 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 352 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 353
 354 /**
 355  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 356  */
 357 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 358     // preface set
 359     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 360     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 361     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 362     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 363     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 364     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 365     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 366     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 367     // Identification
 368     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 369     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 370     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 371     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 372     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 373     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 374     // Content Storage
 375     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 376     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 377     // Essence Container Data
 378     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 379     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 380     // Package
 381     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 382     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 383     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 384     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 385     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 386     // Track
 387     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 388     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 389     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 390     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 391     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 392     // Sequence
 393     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 394     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 395     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 396     // Source Clip
 397     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 398     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 399     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 400     // Timecode Component
 401     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 402     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 403     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 404     // File Descriptor
 405     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 406     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 407     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 408     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 409     // Generic Picture Essence Descriptor
 410     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 411     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 412     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 413     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 414     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 415     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 416     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 417     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 418     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 419     // CDCI Picture Essence Descriptor
 420     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 421     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 422     // Generic Sound Essence Descriptor
 423     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 424     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 425     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 426     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 427     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 428     // Index Table Segment
 429     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 430     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 431     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 432     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 433     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 434     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 435     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 436     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 437     // MPEG video Descriptor
 438     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 439     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 440     // Wave Audio Essence Descriptor
 441     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 442     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 443 };
 444
 445 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 446 {
 447     avio_write(pb, uuid_base, 12);
 448     avio_wb16(pb, type);
 449     avio_wb16(pb, value);
 450 }
 451
 452 static void mxf_write_umid(AVFormatContext *s, int type)
 453 {
 454     MXFContext *mxf = s->priv_data;
 455     avio_write(s->pb, umid_ul, 13);
 456     avio_wb24(s->pb, mxf->instance_number);
 457     avio_write(s->pb, mxf->umid, 15);
 458     avio_w8(s->pb, type);
 459 }
 460
 461 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 462 {
 463     avio_wb32(pb, ref_count);
 464     avio_wb32(pb, 16);
 465 }
 466
 467 static int klv_ber_length(uint64_t len)
 468 {
 469     if (len < 128)
 470         return 1;
 471     else
 472         return (av_log2(len) >> 3) + 2;
 473 }
 474
 475 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 476 {
 477     // Determine the best BER size
 478     int size;
 479     if (len < 128) {
 480         //short form
 481         avio_w8(pb, len);
 482         return 1;
 483     }
 484
 485     size = (av_log2(len) >> 3) + 1;
 486
 487     // long form
 488     avio_w8(pb, 0x80 + size);
 489     while(size) {
 490         size--;
 491         avio_w8(pb, len >> 8 * size & 0xff);
 492     }
 493     return 0;
 494 }
 495
 496 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 497 {
 498     avio_w8(pb, 0x80 + 3);
 499     avio_wb24(pb, len);
 500 }
 501
 502 /*
 503  * Get essence container ul index
 504  */
 505 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 506 {
 507     int i;
 508     for (i = 0; mxf_essence_mappings[i].id; i++)
 509         if (mxf_essence_mappings[i].id == id)
 510             return mxf_essence_mappings[i].index;
 511     return -1;
 512 }
 513
 514 static void mxf_write_primer_pack(AVFormatContext *s)
 515 {
 516     AVIOContext *pb = s->pb;
 517     int local_tag_number, i = 0;
 518
 519     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 520
 521     avio_write(pb, primer_pack_key, 16);
 522     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 523
 524     avio_wb32(pb, local_tag_number); // local_tag num
 525     avio_wb32(pb, 18); // item size, always 18 according to the specs
 526
 527     for (i = 0; i < local_tag_number; i++) {
 528         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 529         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 530     }
 531 }
 532
 533 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
 534 {
 535     avio_wb16(pb, tag);
 536     avio_wb16(pb, size);
 537 }
 538
 539 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 540 {
 541     avio_write(pb, header_metadata_key, 13);
 542     avio_wb24(pb, value);
 543 }
 544
 545 static void mxf_free(AVFormatContext *s)
 546 {
 547     int i;
 548
 549     for (i = 0; i < s->nb_streams; i++) {
 550         AVStream *st = s->streams[i];
 551         av_freep(&st->priv_data);
 552     }
 553 }
 554
 555 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 556 {
 557     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 558     while (uls->uid[0]) {
 559         if (type == uls->id)
 560             break;
 561         uls++;
 562     }
 563     return uls;
 564 }
 565
 566 static void mxf_write_essence_container_refs(AVFormatContext *s)
 567 {
 568     MXFContext *c = s->priv_data;
 569     AVIOContext *pb = s->pb;
 570     int i;
 571
 572     mxf_write_refs_count(pb, c->essence_container_count);
 573     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 574     for (i = 0; i < c->essence_container_count; i++) {
 575         MXFStreamContext *sc = s->streams[i]->priv_data;
 576         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 577     }
 578 }
 579
 580 static void mxf_write_preface(AVFormatContext *s)
 581 {
 582     MXFContext *mxf = s->priv_data;
 583     AVIOContext *pb = s->pb;
 584
 585     mxf_write_metadata_key(pb, 0x012f00);
 586     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 587     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
 588
 589     // write preface set uid
 590     mxf_write_local_tag(pb, 16, 0x3C0A);
 591     mxf_write_uuid(pb, Preface, 0);
 592     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 593
 594     // last modified date
 595     mxf_write_local_tag(pb, 8, 0x3B02);
 596     avio_wb64(pb, mxf->timestamp);
 597
 598     // write version
 599     mxf_write_local_tag(pb, 2, 0x3B05);
 600     avio_wb16(pb, 258); // v1.2
 601
 602     // write identification_refs
 603     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 604     mxf_write_refs_count(pb, 1);
 605     mxf_write_uuid(pb, Identification, 0);
 606
 607     // write content_storage_refs
 608     mxf_write_local_tag(pb, 16, 0x3B03);
 609     mxf_write_uuid(pb, ContentStorage, 0);
 610
 611     // operational pattern
 612     mxf_write_local_tag(pb, 16, 0x3B09);
 613     avio_write(pb, op1a_ul, 16);
 614
 615     // write essence_container_refs
 616     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
 617     mxf_write_essence_container_refs(s);
 618
 619     // write dm_scheme_refs
 620     mxf_write_local_tag(pb, 8, 0x3B0B);
 621     avio_wb64(pb, 0);
 622 }
 623
 624 /*
 625  * Write a local tag containing an ascii string as utf-16
 626  */
 627 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
 628 {
 629     int i, size = strlen(value);
 630     mxf_write_local_tag(pb, size*2, tag);
 631     for (i = 0; i < size; i++)
 632         avio_wb16(pb, value[i]);
 633 }
 634
 635 static void mxf_write_identification(AVFormatContext *s)
 636 {
 637     MXFContext *mxf = s->priv_data;
 638     AVIOContext *pb = s->pb;
 639     const char *company = "FFmpeg";
 640     const char *product = "OP1a Muxer";
 641     const char *version;
 642     int length;
 643
 644     mxf_write_metadata_key(pb, 0x013000);
 645     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 646
 647     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
 648         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 649     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
 650     klv_encode_ber_length(pb, length);
 651
 652     // write uid
 653     mxf_write_local_tag(pb, 16, 0x3C0A);
 654     mxf_write_uuid(pb, Identification, 0);
 655     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 656
 657     // write generation uid
 658     mxf_write_local_tag(pb, 16, 0x3C09);
 659     mxf_write_uuid(pb, Identification, 1);
 660
 661     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 662     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 663     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 664
 665     // write product uid
 666     mxf_write_local_tag(pb, 16, 0x3C05);
 667     mxf_write_uuid(pb, Identification, 2);
 668
 669     // modification date
 670     mxf_write_local_tag(pb, 8, 0x3C06);
 671     avio_wb64(pb, mxf->timestamp);
 672 }
 673
 674 static void mxf_write_content_storage(AVFormatContext *s)
 675 {
 676     AVIOContext *pb = s->pb;
 677
 678     mxf_write_metadata_key(pb, 0x011800);
 679     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 680     klv_encode_ber_length(pb, 92);
 681
 682     // write uid
 683     mxf_write_local_tag(pb, 16, 0x3C0A);
 684     mxf_write_uuid(pb, ContentStorage, 0);
 685     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 686
 687     // write package reference
 688     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 689     mxf_write_refs_count(pb, 2);
 690     mxf_write_uuid(pb, MaterialPackage, 0);
 691     mxf_write_uuid(pb, SourcePackage, 0);
 692
 693     // write essence container data
 694     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 695     mxf_write_refs_count(pb, 1);
 696     mxf_write_uuid(pb, EssenceContainerData, 0);
 697 }
 698
 699 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 700 {
 701     MXFContext *mxf = s->priv_data;
 702     AVIOContext *pb = s->pb;
 703     MXFStreamContext *sc = st->priv_data;
 704
 705     mxf_write_metadata_key(pb, 0x013b00);
 706     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 707     klv_encode_ber_length(pb, 80);
 708
 709     // write track uid
 710     mxf_write_local_tag(pb, 16, 0x3C0A);
 711     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 712     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 713
 714     // write track id
 715     mxf_write_local_tag(pb, 4, 0x4801);
 716     avio_wb32(pb, st->index+2);
 717
 718     // write track number
 719     mxf_write_local_tag(pb, 4, 0x4804);
 720     if (type == MaterialPackage)
 721         avio_wb32(pb, 0); // track number of material package is 0
 722     else
 723         avio_write(pb, sc->track_essence_element_key + 12, 4);
 724
 725     mxf_write_local_tag(pb, 8, 0x4B01);
 726     avio_wb32(pb, mxf->time_base.den);
 727     avio_wb32(pb, mxf->time_base.num);
 728
 729     // write origin
 730     mxf_write_local_tag(pb, 8, 0x4B02);
 731     avio_wb64(pb, 0);
 732
 733     // write sequence refs
 734     mxf_write_local_tag(pb, 16, 0x4803);
 735     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 736 }
 737
 738 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 };
 739
 740 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 741 {
 742     MXFContext *mxf = s->priv_data;
 743     AVIOContext *pb = s->pb;
 744
 745     // find data define uls
 746     mxf_write_local_tag(pb, 16, 0x0201);
 747     if (st == mxf->timecode_track)
 748         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 749     else {
 750         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 751         avio_write(pb, data_def_ul->uid, 16);
 752     }
 753
 754     // write duration
 755     mxf_write_local_tag(pb, 8, 0x0202);
 756     avio_wb64(pb, mxf->duration);
 757 }
 758
 759 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 760 {
 761     MXFContext *mxf = s->priv_data;
 762     AVIOContext *pb = s->pb;
 763     enum MXFMetadataSetType component;
 764
 765     mxf_write_metadata_key(pb, 0x010f00);
 766     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 767     klv_encode_ber_length(pb, 80);
 768
 769     mxf_write_local_tag(pb, 16, 0x3C0A);
 770     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 771
 772     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 773     mxf_write_common_fields(s, st);
 774
 775     // write structural component
 776     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 777     mxf_write_refs_count(pb, 1);
 778     if (st == mxf->timecode_track)
 779         component = TimecodeComponent;
 780     else
 781         component = SourceClip;
 782     if (type == SourcePackage)
 783         component += TypeBottom;
 784     mxf_write_uuid(pb, component, st->index);
 785 }
 786
 787 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 788 {
 789     MXFContext *mxf = s->priv_data;
 790     AVIOContext *pb = s->pb;
 791
 792     mxf_write_metadata_key(pb, 0x011400);
 793     klv_encode_ber_length(pb, 75);
 794
 795     // UID
 796     mxf_write_local_tag(pb, 16, 0x3C0A);
 797     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
 798                    TimecodeComponent + TypeBottom, st->index);
 799
 800     mxf_write_common_fields(s, st);
 801
 802     // Start Time Code
 803     mxf_write_local_tag(pb, 8, 0x1501);
 804     avio_wb64(pb, mxf->tc.start);
 805
 806     // Rounded Time Code Base
 807     mxf_write_local_tag(pb, 2, 0x1502);
 808     avio_wb16(pb, mxf->timecode_base);
 809
 810     // Drop Frame
 811     mxf_write_local_tag(pb, 1, 0x1503);
 812     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 813 }
 814
 815 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 816 {
 817     AVIOContext *pb = s->pb;
 818     int i;
 819
 820     mxf_write_metadata_key(pb, 0x011100);
 821     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 822     klv_encode_ber_length(pb, 108);
 823
 824     // write uid
 825     mxf_write_local_tag(pb, 16, 0x3C0A);
 826     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 827
 828     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 829     mxf_write_common_fields(s, st);
 830
 831     // write start_position
 832     mxf_write_local_tag(pb, 8, 0x1201);
 833     avio_wb64(pb, 0);
 834
 835     // write source package uid, end of the reference
 836     mxf_write_local_tag(pb, 32, 0x1101);
 837     if (type == SourcePackage) {
 838         for (i = 0; i < 4; i++)
 839             avio_wb64(pb, 0);
 840     } else
 841         mxf_write_umid(s, 1);
 842
 843     // write source track id
 844     mxf_write_local_tag(pb, 4, 0x1102);
 845     if (type == SourcePackage)
 846         avio_wb32(pb, 0);
 847     else
 848         avio_wb32(pb, st->index+2);
 849 }
 850
 851 static void mxf_write_multi_descriptor(AVFormatContext *s)
 852 {
 853     MXFContext *mxf = s->priv_data;
 854     AVIOContext *pb = s->pb;
 855     const uint8_t *ul;
 856     int i;
 857
 858     mxf_write_metadata_key(pb, 0x014400);
 859     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 860     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
 861
 862     mxf_write_local_tag(pb, 16, 0x3C0A);
 863     mxf_write_uuid(pb, MultipleDescriptor, 0);
 864     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 865
 866     // write sample rate
 867     mxf_write_local_tag(pb, 8, 0x3001);
 868     avio_wb32(pb, mxf->time_base.den);
 869     avio_wb32(pb, mxf->time_base.num);
 870
 871     // write essence container ul
 872     mxf_write_local_tag(pb, 16, 0x3004);
 873     if (mxf->essence_container_count > 1)
 874         ul = multiple_desc_ul;
 875     else {
 876         MXFStreamContext *sc = s->streams[0]->priv_data;
 877         ul = mxf_essence_container_uls[sc->index].container_ul;
 878     }
 879     avio_write(pb, ul, 16);
 880
 881     // write sub descriptor refs
 882     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 883     mxf_write_refs_count(pb, s->nb_streams);
 884     for (i = 0; i < s->nb_streams; i++)
 885         mxf_write_uuid(pb, SubDescriptor, i);
 886 }
 887
 888 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 889 {
 890     MXFContext *mxf = s->priv_data;
 891     MXFStreamContext *sc = st->priv_data;
 892     AVIOContext *pb = s->pb;
 893
 894     avio_write(pb, key, 16);
 895     klv_encode_ber4_length(pb, size+20+8+12+20);
 896
 897     mxf_write_local_tag(pb, 16, 0x3C0A);
 898     mxf_write_uuid(pb, SubDescriptor, st->index);
 899
 900     mxf_write_local_tag(pb, 4, 0x3006);
 901     avio_wb32(pb, st->index+2);
 902
 903     mxf_write_local_tag(pb, 8, 0x3001);
 904     avio_wb32(pb, mxf->time_base.den);
 905     avio_wb32(pb, mxf->time_base.num);
 906
 907     mxf_write_local_tag(pb, 16, 0x3004);
 908     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 909 }
 910
 911 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
 912 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
 913 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
 914 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
 915 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
 916
 917 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 918 {
 919     MXFStreamContext *sc = st->priv_data;
 920     AVIOContext *pb = s->pb;
 921     int stored_height = (st->codec->height+15)/16*16;
 922     int display_height;
 923     int f1, f2;
 924     unsigned desc_size = size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20;
 925     if (sc->interlaced && sc->field_dominance)
 926         desc_size += 5;
 927
 928     mxf_write_generic_desc(s, st, key, desc_size);
 929
 930     mxf_write_local_tag(pb, 4, 0x3203);
 931     avio_wb32(pb, st->codec->width);
 932
 933     mxf_write_local_tag(pb, 4, 0x3202);
 934     avio_wb32(pb, stored_height>>sc->interlaced);
 935
 936     mxf_write_local_tag(pb, 4, 0x3209);
 937     avio_wb32(pb, st->codec->width);
 938
 939     if (st->codec->height == 608) // PAL + VBI
 940         display_height = 576;
 941     else if (st->codec->height == 512)  // NTSC + VBI
 942         display_height = 486;
 943     else
 944         display_height = st->codec->height;
 945
 946     mxf_write_local_tag(pb, 4, 0x3208);
 947     avio_wb32(pb, display_height>>sc->interlaced);
 948
 949     // component depth
 950     mxf_write_local_tag(pb, 4, 0x3301);
 951     avio_wb32(pb, sc->component_depth);
 952
 953     // horizontal subsampling
 954     mxf_write_local_tag(pb, 4, 0x3302);
 955     avio_wb32(pb, 2);
 956
 957     // frame layout
 958     mxf_write_local_tag(pb, 1, 0x320C);
 959     avio_w8(pb, sc->interlaced);
 960
 961     // video line map
 962     switch (st->codec->height) {
 963     case  576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
 964     case  608: f1 =  7; f2 = 320; break;
 965     case  480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
 966     case  512: f1 =  7; f2 = 270; break;
 967     case  720: f1 = 26; f2 =   0; break; // progressive
 968     case 1080: f1 = 21; f2 = 584; break;
 969     default:   f1 =  0; f2 =   0; break;
 970     }
 971
 972     if (!sc->interlaced) {
 973         f2  = 0;
 974         f1 *= 2;
 975     }
 976
 977     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
 978     avio_wb32(pb, sc->interlaced ? 2 : 1);
 979     avio_wb32(pb, 4);
 980     avio_wb32(pb, f1);
 981     if (sc->interlaced)
 982         avio_wb32(pb, f2);
 983
 984     mxf_write_local_tag(pb, 8, 0x320E);
 985     avio_wb32(pb, sc->aspect_ratio.num);
 986     avio_wb32(pb, sc->aspect_ratio.den);
 987
 988     mxf_write_local_tag(pb, 16, 0x3201);
 989     avio_write(pb, *sc->codec_ul, 16);
 990
 991     if (sc->interlaced && sc->field_dominance) {
 992         mxf_write_local_tag(pb, 1, 0x3212);
 993         avio_w8(pb, sc->field_dominance);
 994     }
 995
 996 }
 997
 998 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
 999 {
1000     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
1001 }
1002
1003 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1004 {
1005     AVIOContext *pb = s->pb;
1006     int profile_and_level = (st->codec->profile<<4) | st->codec->level;
1007
1008     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
1009
1010     // bit rate
1011     mxf_write_local_tag(pb, 4, 0x8000);
1012     avio_wb32(pb, st->codec->bit_rate);
1013
1014     // profile and level
1015     mxf_write_local_tag(pb, 1, 0x8007);
1016     if (!st->codec->profile)
1017         profile_and_level |= 0x80; // escape bit
1018     avio_w8(pb, profile_and_level);
1019 }
1020
1021 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1022 {
1023     AVIOContext *pb = s->pb;
1024
1025     mxf_write_generic_desc(s, st, key, size+5+12+8+8);
1026
1027     // audio locked
1028     mxf_write_local_tag(pb, 1, 0x3D02);
1029     avio_w8(pb, 1);
1030
1031     // write audio sampling rate
1032     mxf_write_local_tag(pb, 8, 0x3D03);
1033     avio_wb32(pb, st->codec->sample_rate);
1034     avio_wb32(pb, 1);
1035
1036     mxf_write_local_tag(pb, 4, 0x3D07);
1037     avio_wb32(pb, st->codec->channels);
1038
1039     mxf_write_local_tag(pb, 4, 0x3D01);
1040     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));
1041 }
1042
1043 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1044 {
1045     AVIOContext *pb = s->pb;
1046
1047     mxf_write_generic_sound_common(s, st, key, size+6+8);
1048
1049     mxf_write_local_tag(pb, 2, 0x3D0A);
1050     avio_wb16(pb, st->codec->block_align);
1051
1052     // avg bytes per sec
1053     mxf_write_local_tag(pb, 4, 0x3D09);
1054     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);
1055 }
1056
1057 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1058 {
1059     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
1060 }
1061
1062 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1063 {
1064     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
1065 }
1066
1067 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1068 {
1069     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
1070 }
1071
1072 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
1073 {
1074     MXFContext *mxf = s->priv_data;
1075     AVIOContext *pb = s->pb;
1076     int i, track_count = s->nb_streams+1;
1077
1078     if (type == MaterialPackage) {
1079         mxf_write_metadata_key(pb, 0x013600);
1080         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1081         klv_encode_ber_length(pb, 92 + 16*track_count);
1082     } else {
1083         mxf_write_metadata_key(pb, 0x013700);
1084         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1085         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
1086     }
1087
1088     // write uid
1089     mxf_write_local_tag(pb, 16, 0x3C0A);
1090     mxf_write_uuid(pb, type, 0);
1091     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
1092     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1093
1094     // write package umid
1095     mxf_write_local_tag(pb, 32, 0x4401);
1096     mxf_write_umid(s, type == SourcePackage);
1097     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1098
1099     // package creation date
1100     mxf_write_local_tag(pb, 8, 0x4405);
1101     avio_wb64(pb, mxf->timestamp);
1102
1103     // package modified date
1104     mxf_write_local_tag(pb, 8, 0x4404);
1105     avio_wb64(pb, mxf->timestamp);
1106
1107     // write track refs
1108     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
1109     mxf_write_refs_count(pb, track_count);
1110     mxf_write_uuid(pb, type == MaterialPackage ? Track :
1111                    Track + TypeBottom, -1); // timecode track
1112     for (i = 0; i < s->nb_streams; i++)
1113         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
1114
1115     // write multiple descriptor reference
1116     if (type == SourcePackage) {
1117         mxf_write_local_tag(pb, 16, 0x4701);
1118         if (s->nb_streams > 1) {
1119             mxf_write_uuid(pb, MultipleDescriptor, 0);
1120             mxf_write_multi_descriptor(s);
1121         } else
1122             mxf_write_uuid(pb, SubDescriptor, 0);
1123     }
1124
1125     // write timecode track
1126     mxf_write_track(s, mxf->timecode_track, type);
1127     mxf_write_sequence(s, mxf->timecode_track, type);
1128     mxf_write_timecode_component(s, mxf->timecode_track, type);
1129
1130     for (i = 0; i < s->nb_streams; i++) {
1131         AVStream *st = s->streams[i];
1132         mxf_write_track(s, st, type);
1133         mxf_write_sequence(s, st, type);
1134         mxf_write_structural_component(s, st, type);
1135
1136         if (type == SourcePackage) {
1137             MXFStreamContext *sc = st->priv_data;
1138             mxf_essence_container_uls[sc->index].write_desc(s, st);
1139         }
1140     }
1141 }
1142
1143 static int mxf_write_essence_container_data(AVFormatContext *s)
1144 {
1145     AVIOContext *pb = s->pb;
1146
1147     mxf_write_metadata_key(pb, 0x012300);
1148     klv_encode_ber_length(pb, 72);
1149
1150     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1151     mxf_write_uuid(pb, EssenceContainerData, 0);
1152
1153     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1154     mxf_write_umid(s, 1);
1155
1156     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1157     avio_wb32(pb, 1);
1158
1159     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1160     avio_wb32(pb, 2);
1161
1162     return 0;
1163 }
1164
1165 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1166 {
1167     mxf_write_preface(s);
1168     mxf_write_identification(s);
1169     mxf_write_content_storage(s);
1170     mxf_write_package(s, MaterialPackage);
1171     mxf_write_package(s, SourcePackage);
1172     mxf_write_essence_container_data(s);
1173     return 0;
1174 }
1175
1176 static unsigned klv_fill_size(uint64_t size)
1177 {
1178     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1179     if (pad < 20) // smallest fill item possible
1180         return pad + KAG_SIZE;
1181     else
1182         return pad & (KAG_SIZE-1);
1183 }
1184
1185 static void mxf_write_index_table_segment(AVFormatContext *s)
1186 {
1187     MXFContext *mxf = s->priv_data;
1188     AVIOContext *pb = s->pb;
1189     int i, j, temporal_reordering = 0;
1190     int key_index = mxf->last_key_index;
1191
1192     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1193
1194     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1195         return;
1196
1197     avio_write(pb, index_table_segment_key, 16);
1198
1199     if (mxf->edit_unit_byte_count) {
1200         klv_encode_ber_length(pb, 80);
1201     } else {
1202         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1203                               12+mxf->edit_units_count*(11+mxf->slice_count*4));
1204     }
1205
1206     // instance id
1207     mxf_write_local_tag(pb, 16, 0x3C0A);
1208     mxf_write_uuid(pb, IndexTableSegment, 0);
1209
1210     // index edit rate
1211     mxf_write_local_tag(pb, 8, 0x3F0B);
1212     avio_wb32(pb, mxf->time_base.den);
1213     avio_wb32(pb, mxf->time_base.num);
1214
1215     // index start position
1216     mxf_write_local_tag(pb, 8, 0x3F0C);
1217     avio_wb64(pb, mxf->last_indexed_edit_unit);
1218
1219     // index duration
1220     mxf_write_local_tag(pb, 8, 0x3F0D);
1221     if (mxf->edit_unit_byte_count)
1222         avio_wb64(pb, 0); // index table covers whole container
1223     else
1224         avio_wb64(pb, mxf->edit_units_count);
1225
1226     // edit unit byte count
1227     mxf_write_local_tag(pb, 4, 0x3F05);
1228     avio_wb32(pb, mxf->edit_unit_byte_count);
1229
1230     // index sid
1231     mxf_write_local_tag(pb, 4, 0x3F06);
1232     avio_wb32(pb, 2);
1233
1234     // body sid
1235     mxf_write_local_tag(pb, 4, 0x3F07);
1236     avio_wb32(pb, 1);
1237
1238     if (!mxf->edit_unit_byte_count) {
1239         // real slice count - 1
1240         mxf_write_local_tag(pb, 1, 0x3F08);
1241         avio_w8(pb, mxf->slice_count);
1242
1243         // delta entry array
1244         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1245         avio_wb32(pb, s->nb_streams+1); // num of entries
1246         avio_wb32(pb, 6);               // size of one entry
1247         // write system item delta entry
1248         avio_w8(pb, 0);
1249         avio_w8(pb, 0); // slice entry
1250         avio_wb32(pb, 0); // element delta
1251         for (i = 0; i < s->nb_streams; i++) {
1252             AVStream *st = s->streams[i];
1253             MXFStreamContext *sc = st->priv_data;
1254             avio_w8(pb, sc->temporal_reordering);
1255             if (sc->temporal_reordering)
1256                 temporal_reordering = 1;
1257             if (i == 0) { // video track
1258                 avio_w8(pb, 0); // slice number
1259                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1260             } else { // audio track
1261                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1262                 audio_frame_size += klv_fill_size(audio_frame_size);
1263                 avio_w8(pb, 1);
1264                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1265             }
1266         }
1267
1268         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1269         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1270         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
1271
1272         for (i = 0; i < mxf->edit_units_count; i++) {
1273             int temporal_offset = 0;
1274
1275             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1276                 mxf->last_key_index = key_index;
1277                 key_index = i;
1278             }
1279
1280             if (temporal_reordering) {
1281                 int pic_num_in_gop = i - key_index;
1282                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1283                     for (j = key_index; j < mxf->edit_units_count; j++) {
1284                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1285                             break;
1286                     }
1287                     if (j == mxf->edit_units_count)
1288                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1289                     temporal_offset = j - key_index - pic_num_in_gop;
1290                 }
1291             }
1292             avio_w8(pb, temporal_offset);
1293
1294             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1295                 avio_w8(pb, mxf->last_key_index - i);
1296             } else {
1297                 avio_w8(pb, key_index - i); // key frame offset
1298                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1299                     mxf->last_key_index = key_index;
1300             }
1301
1302             if (!(mxf->index_entries[i].flags & 0x33) && // I frame
1303                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1304                 mxf->index_entries[i].flags |= 0x80; // random access
1305             avio_w8(pb, mxf->index_entries[i].flags);
1306             // stream offset
1307             avio_wb64(pb, mxf->index_entries[i].offset);
1308             if (s->nb_streams > 1)
1309                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1310         }
1311
1312         mxf->last_key_index = key_index - mxf->edit_units_count;
1313         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1314         mxf->edit_units_count = 0;
1315     }
1316 }
1317
1318 static void mxf_write_klv_fill(AVFormatContext *s)
1319 {
1320     unsigned pad = klv_fill_size(avio_tell(s->pb));
1321     if (pad) {
1322         avio_write(s->pb, klv_fill_key, 16);
1323         pad -= 16 + 4;
1324         klv_encode_ber4_length(s->pb, pad);
1325         for (; pad; pad--)
1326             avio_w8(s->pb, 0);
1327         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1328     }
1329 }
1330
1331 static void mxf_write_partition(AVFormatContext *s, int bodysid,
1332                                 int indexsid,
1333                                 const uint8_t *key, int write_metadata)
1334 {
1335     MXFContext *mxf = s->priv_data;
1336     AVIOContext *pb = s->pb;
1337     int64_t header_byte_count_offset;
1338     unsigned index_byte_count = 0;
1339     uint64_t partition_offset = avio_tell(pb);
1340
1341     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1342         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1343             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1344     else if (mxf->edit_unit_byte_count && indexsid)
1345         index_byte_count = 80;
1346
1347     if (index_byte_count) {
1348         // add encoded ber length
1349         index_byte_count += 16 + klv_ber_length(index_byte_count);
1350         index_byte_count += klv_fill_size(index_byte_count);
1351     }
1352
1353     if (!memcmp(key, body_partition_key, 16)) {
1354         mxf->body_partition_offset =
1355             av_realloc(mxf->body_partition_offset,
1356                        (mxf->body_partitions_count+1)*
1357                        sizeof(*mxf->body_partition_offset));
1358         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1359     }
1360
1361     // write klv
1362     avio_write(pb, key, 16);
1363     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1364
1365     // write partition value
1366     avio_wb16(pb, 1); // majorVersion
1367     avio_wb16(pb, 2); // minorVersion
1368     avio_wb32(pb, KAG_SIZE); // KAGSize
1369
1370     avio_wb64(pb, partition_offset); // ThisPartition
1371
1372     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1373         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1374     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1375         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1376     else
1377         avio_wb64(pb, 0);
1378
1379     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1380
1381     // set offset
1382     header_byte_count_offset = avio_tell(pb);
1383     avio_wb64(pb, 0); // headerByteCount, update later
1384
1385     // indexTable
1386     avio_wb64(pb, index_byte_count); // indexByteCount
1387     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1388
1389     // BodyOffset
1390     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1391         avio_wb64(pb, mxf->body_offset);
1392     } else
1393         avio_wb64(pb, 0);
1394
1395     avio_wb32(pb, bodysid); // bodySID
1396
1397     // operational pattern
1398     avio_write(pb, op1a_ul, 16);
1399
1400     // essence container
1401     mxf_write_essence_container_refs(s);
1402
1403     if (write_metadata) {
1404         // mark the start of the headermetadata and calculate metadata size
1405         int64_t pos, start;
1406         unsigned header_byte_count;
1407
1408         mxf_write_klv_fill(s);
1409         start = avio_tell(s->pb);
1410         mxf_write_primer_pack(s);
1411         mxf_write_header_metadata_sets(s);
1412         pos = avio_tell(s->pb);
1413         header_byte_count = pos - start + klv_fill_size(pos);
1414
1415         // update header_byte_count
1416         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1417         avio_wb64(pb, header_byte_count);
1418         avio_seek(pb, pos, SEEK_SET);
1419     }
1420
1421     avio_flush(pb);
1422 }
1423
1424 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,
1425 AVPacket *pkt)
1426 {
1427     MXFContext *mxf = s->priv_data;
1428     MXFStreamContext *sc = st->priv_data;
1429     int i, cid;
1430     uint8_t* header_cid;
1431     unsigned int frame_size = 0;
1432
1433     if (mxf->header_written)
1434         return 1;
1435
1436     if (pkt->size < 43)
1437         return -1;
1438
1439     header_cid = pkt->data + 0x28;
1440     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];
1441
1442     if ((i = ff_dnxhd_get_cid_table(cid)) < 0)
1443         return -1;
1444
1445     switch (cid) {
1446     case 1235:
1447         sc->index = 24;
1448         sc->component_depth = 10;
1449         break;
1450     case 1237:
1451         sc->index = 25;
1452         break;
1453     case 1238:
1454         sc->index = 26;
1455         break;
1456     case 1241:
1457         sc->index = 27;
1458         sc->component_depth = 10;
1459         break;
1460     case 1242:
1461         sc->index = 28;
1462         break;
1463     case 1243:
1464         sc->index = 29;
1465         break;
1466     case 1250:
1467         sc->index = 30;
1468         sc->component_depth = 10;
1469         break;
1470     case 1251:
1471         sc->index = 31;
1472         break;
1473     case 1252:
1474         sc->index = 32;
1475         break;
1476     case 1253:
1477         sc->index = 33;
1478         break;
1479     default:
1480         return -1;
1481     }
1482
1483     frame_size = ff_dnxhd_cid_table[i].frame_size;
1484     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1485     sc->aspect_ratio = (AVRational){ 16, 9 };
1486
1487     mxf->edit_unit_byte_count = KAG_SIZE;
1488     for (i = 0; i < s->nb_streams; i++) {
1489         AVStream *st = s->streams[i];
1490         MXFStreamContext *sc = st->priv_data;
1491         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1492             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1493             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1494         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1495             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1496             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1497         }
1498     }
1499
1500     return 1;
1501 }
1502
1503 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1504 {
1505     MXFContext *mxf = s->priv_data;
1506     MXFStreamContext *sc = st->priv_data;
1507     uint8_t *vs_pack, *vsc_pack;
1508     int i, ul_index, frame_size, stype, pal;
1509
1510     if (mxf->header_written)
1511         return 1;
1512
1513     // Check for minimal frame size
1514     if (pkt->size < 120000)
1515         return -1;
1516
1517     vs_pack  = pkt->data + 80*5 + 48;
1518     vsc_pack = pkt->data + 80*5 + 53;
1519     stype    = vs_pack[3] & 0x1f;
1520     pal      = (vs_pack[3] >> 5) & 0x1;
1521
1522     if ((vs_pack[2] & 0x07) == 0x02)
1523         sc->aspect_ratio = (AVRational){ 16, 9 };
1524     else
1525         sc->aspect_ratio = (AVRational){ 4, 3 };
1526
1527     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
1528     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
1529     // and set field dominance accordingly
1530     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
1531
1532     switch (stype) {
1533     case 0x18: // DV100 720p
1534         ul_index = 6 + pal;
1535         frame_size = pal ? 288000 : 240000;
1536         if (sc->interlaced) {
1537             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
1538             sc->interlaced = 0;
1539         }
1540         break;
1541     case 0x14: // DV100 1080i
1542         ul_index = 4 + pal;
1543         frame_size = pal ? 576000 : 480000;
1544         break;
1545     case 0x04: // DV50
1546         ul_index = 2 + pal;
1547         frame_size = pal ? 288000 : 240000;
1548         break;
1549     default: // DV25
1550         ul_index = 0 + pal;
1551         frame_size = pal ? 144000 : 120000;
1552     }
1553
1554     sc->index = ul_index + 16;
1555     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
1556
1557     mxf->edit_unit_byte_count = KAG_SIZE;
1558     for (i = 0; i < s->nb_streams; i++) {
1559         AVStream *st = s->streams[i];
1560         MXFStreamContext *sc = st->priv_data;
1561         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1562             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1563             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1564         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1565             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1566             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1567         }
1568     }
1569
1570     return 1;
1571 }
1572
1573 static const UID mxf_mpeg2_codec_uls[] = {
1574     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1575     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1576     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1577     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1578     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1579     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1580     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1581     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1582     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
1583     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
1584 };
1585
1586 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1587 {
1588     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
1589
1590     if (avctx->profile == 4) { // Main
1591         if (avctx->level == 8) // Main
1592             return &mxf_mpeg2_codec_uls[0+long_gop];
1593         else if (avctx->level == 4) // High
1594             return &mxf_mpeg2_codec_uls[4+long_gop];
1595         else if (avctx->level == 6) // High 14
1596             return &mxf_mpeg2_codec_uls[8+long_gop];
1597     } else if (avctx->profile == 0) { // 422
1598         if (avctx->level == 5) // Main
1599             return &mxf_mpeg2_codec_uls[2+long_gop];
1600         else if (avctx->level == 2) // High
1601             return &mxf_mpeg2_codec_uls[6+long_gop];
1602     }
1603     return NULL;
1604 }
1605
1606 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
1607                                  AVPacket *pkt, MXFIndexEntry *e)
1608 {
1609     MXFStreamContext *sc = st->priv_data;
1610     uint32_t c = -1;
1611     int i;
1612
1613     for(i = 0; i < pkt->size - 4; i++) {
1614         c = (c<<8) + pkt->data[i];
1615         if (c == 0x1b5) {
1616             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1617                 st->codec->profile = pkt->data[i+1] & 0x07;
1618                 st->codec->level   = pkt->data[i+2] >> 4;
1619             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1620                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1621                 if (sc->interlaced)
1622                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
1623                 break;
1624             }
1625         } else if (c == 0x1b8) { // gop
1626             if (pkt->data[i+4]>>6 & 0x01) { // closed
1627                 sc->closed_gop = 1;
1628                 if (e->flags & 0x40) // sequence header present
1629                     e->flags |= 0x80; // random access
1630             }
1631         } else if (c == 0x1b3) { // seq
1632             e->flags |= 0x40;
1633             switch ((pkt->data[i+4]>>4) & 0xf) {
1634             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1635             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1636             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1637             default:
1638                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1639                           st->codec->width, st->codec->height, 1024*1024);
1640             }
1641         } else if (c == 0x100) { // pic
1642             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1643             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
1644             if (pict_type == 2) { // P frame
1645                 e->flags |= 0x22;
1646                 sc->closed_gop = 0; // reset closed gop, don't matter anymore
1647             } else if (pict_type == 3) { // B frame
1648                 if (sc->closed_gop)
1649                     e->flags |= 0x13; // only backward prediction
1650                 else
1651                     e->flags |= 0x33;
1652                 sc->temporal_reordering = -1;
1653             } else if (!pict_type) {
1654                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1655                 return 0;
1656             }
1657         }
1658     }
1659     if (s->oformat != &ff_mxf_d10_muxer)
1660         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1661     return !!sc->codec_ul;
1662 }
1663
1664 static uint64_t mxf_parse_timestamp(time_t timestamp)
1665 {
1666     struct tm *time = gmtime(&timestamp);
1667     if (!time)
1668         return 0;
1669     return (uint64_t)(time->tm_year+1900) << 48 |
1670            (uint64_t)(time->tm_mon+1)     << 40 |
1671            (uint64_t) time->tm_mday       << 32 |
1672                       time->tm_hour       << 24 |
1673                       time->tm_min        << 16 |
1674                       time->tm_sec        << 8;
1675 }
1676
1677 static void mxf_gen_umid(AVFormatContext *s)
1678 {
1679     MXFContext *mxf = s->priv_data;
1680     uint32_t seed = av_get_random_seed();
1681     uint64_t umid = seed + 0x5294713400000000LL;
1682
1683     AV_WB64(mxf->umid  , umid);
1684     AV_WB64(mxf->umid+8, umid>>8);
1685
1686     mxf->instance_number = seed;
1687 }
1688
1689 static int mxf_write_header(AVFormatContext *s)
1690 {
1691     MXFContext *mxf = s->priv_data;
1692     int i, ret;
1693     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1694     const MXFSamplesPerFrame *spf = NULL;
1695     AVDictionaryEntry *t;
1696     int64_t timestamp = 0;
1697     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
1698
1699     if (!s->nb_streams)
1700         return -1;
1701
1702     for (i = 0; i < s->nb_streams; i++) {
1703         AVStream *st = s->streams[i];
1704         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1705         if (!sc)
1706             return AVERROR(ENOMEM);
1707         st->priv_data = sc;
1708
1709         if ((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) {
1710             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
1711             return -1;
1712         }
1713
1714         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1715             AVRational rate, tbc = st->codec->time_base;
1716             // Default component depth to 8
1717             sc->component_depth = 8;
1718             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
1719             spf = mxf_get_samples_per_frame(s, tbc);
1720             if (!spf) {
1721                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
1722                        tbc.den, tbc.num);
1723                 return AVERROR(EINVAL);
1724             }
1725             mxf->time_base = spf->time_base;
1726             rate = av_inv_q(mxf->time_base);
1727             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1728             if (!tcr)
1729                 tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
1730             if (tcr)
1731                 ret = av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
1732             else
1733                 ret = av_timecode_init(&mxf->tc, rate, 0, 0, s);
1734             if (ret < 0)
1735                 return ret;
1736             if (s->oformat == &ff_mxf_d10_muxer) {
1737                 if (st->codec->bit_rate == 50000000)
1738                     if (mxf->time_base.den == 25) sc->index = 3;
1739                     else                          sc->index = 5;
1740                 else if (st->codec->bit_rate == 40000000)
1741                     if (mxf->time_base.den == 25) sc->index = 7;
1742                     else                          sc->index = 9;
1743                 else if (st->codec->bit_rate == 30000000)
1744                     if (mxf->time_base.den == 25) sc->index = 11;
1745                     else                          sc->index = 13;
1746                 else {
1747                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1748                     return -1;
1749                 }
1750
1751                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1752                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1753                     mxf->time_base.num / (8*mxf->time_base.den);
1754                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1755                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;
1756                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1757             }
1758         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1759             if (st->codec->sample_rate != 48000) {
1760                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1761                 return -1;
1762             }
1763             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
1764             if (s->oformat == &ff_mxf_d10_muxer) {
1765                 if (st->index != 1) {
1766                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1767                     return -1;
1768                 }
1769                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
1770                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
1771                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1772                 }
1773                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1774             } else
1775             mxf->slice_count = 1;
1776         }
1777
1778         if (!sc->index) {
1779             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1780             if (sc->index == -1) {
1781                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1782                        "codec not currently supported in container\n", i);
1783                 return -1;
1784             }
1785         }
1786
1787         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1788
1789         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1790         sc->track_essence_element_key[15] = present[sc->index];
1791         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1792
1793         if (!present[sc->index])
1794             mxf->essence_container_count++;
1795         present[sc->index]++;
1796     }
1797
1798     if (s->oformat == &ff_mxf_d10_muxer) {
1799         mxf->essence_container_count = 1;
1800     }
1801
1802     if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
1803         mxf_gen_umid(s);
1804
1805     for (i = 0; i < s->nb_streams; i++) {
1806         MXFStreamContext *sc = s->streams[i]->priv_data;
1807         // update element count
1808         sc->track_essence_element_key[13] = present[sc->index];
1809         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
1810             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
1811         else
1812             sc->order = AV_RB32(sc->track_essence_element_key+12);
1813     }
1814
1815     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
1816         timestamp = ff_iso8601_to_unix_time(t->value);
1817     if (timestamp)
1818         mxf->timestamp = mxf_parse_timestamp(timestamp);
1819     mxf->duration = -1;
1820
1821     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1822     if (!mxf->timecode_track)
1823         return AVERROR(ENOMEM);
1824     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1825     if (!mxf->timecode_track->priv_data)
1826         return AVERROR(ENOMEM);
1827     mxf->timecode_track->index = -1;
1828
1829     if (!spf)
1830         spf = mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
1831
1832     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
1833         return -1;
1834
1835     return 0;
1836 }
1837
1838 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1839 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 };
1840
1841 static void mxf_write_system_item(AVFormatContext *s)
1842 {
1843     MXFContext *mxf = s->priv_data;
1844     AVIOContext *pb = s->pb;
1845     unsigned frame;
1846     uint32_t time_code;
1847
1848     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1849
1850     // write system metadata pack
1851     avio_write(pb, system_metadata_pack_key, 16);
1852     klv_encode_ber4_length(pb, 57);
1853     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1854     avio_w8(pb, 0x04); // content package rate
1855     avio_w8(pb, 0x00); // content package type
1856     avio_wb16(pb, 0x00); // channel handle
1857     avio_wb16(pb, mxf->tc.start + frame); // continuity count
1858     if (mxf->essence_container_count > 1)
1859         avio_write(pb, multiple_desc_ul, 16);
1860     else {
1861         MXFStreamContext *sc = s->streams[0]->priv_data;
1862         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1863     }
1864     avio_w8(pb, 0);
1865     avio_wb64(pb, 0);
1866     avio_wb64(pb, 0); // creation date/time stamp
1867
1868     avio_w8(pb, 0x81); // SMPTE 12M time code
1869     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
1870     avio_wb32(pb, time_code);
1871     avio_wb32(pb, 0); // binary group data
1872     avio_wb64(pb, 0);
1873
1874     // write system metadata package set
1875     avio_write(pb, system_metadata_package_set_key, 16);
1876     klv_encode_ber4_length(pb, 35);
1877     avio_w8(pb, 0x83); // UMID
1878     avio_wb16(pb, 0x20);
1879     mxf_write_umid(s, 1);
1880 }
1881
1882 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1883 {
1884     MXFContext *mxf = s->priv_data;
1885     AVIOContext *pb = s->pb;
1886     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1887         (8*mxf->time_base.den); // frame size
1888     int pad;
1889
1890     packet_size += 16 + 4;
1891     packet_size += klv_fill_size(packet_size);
1892
1893     klv_encode_ber4_length(pb, pkt->size);
1894     avio_write(pb, pkt->data, pkt->size);
1895
1896     // ensure CBR muxing by padding to correct video frame size
1897     pad = packet_size - pkt->size - 16 - 4;
1898     if (pad > 20) {
1899         avio_write(s->pb, klv_fill_key, 16);
1900         pad -= 16 + 4;
1901         klv_encode_ber4_length(s->pb, pad);
1902         for (; pad; pad--)
1903             avio_w8(s->pb, 0);
1904         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1905     } else {
1906         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1907         for (; pad > 0; pad--)
1908             avio_w8(s->pb, 0);
1909     }
1910 }
1911
1912 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1913 {
1914     MXFContext *mxf = s->priv_data;
1915     AVIOContext *pb = s->pb;
1916     int frame_size = pkt->size / st->codec->block_align;
1917     uint8_t *samples = pkt->data;
1918     uint8_t *end = pkt->data + pkt->size;
1919     int i;
1920
1921     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1922
1923     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1924     avio_wl16(pb, frame_size);
1925     avio_w8(pb, (1<<st->codec->channels)-1);
1926
1927     while (samples < end) {
1928         for (i = 0; i < st->codec->channels; i++) {
1929             uint32_t sample;
1930             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {
1931                 sample = AV_RL24(samples)<< 4;
1932                 samples += 3;
1933             } else {
1934                 sample = AV_RL16(samples)<<12;
1935                 samples += 2;
1936             }
1937             avio_wl32(pb, sample | i);
1938         }
1939         for (; i < 8; i++)
1940             avio_wl32(pb, i);
1941     }
1942 }
1943
1944 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1945 {
1946     MXFContext *mxf = s->priv_data;
1947     AVIOContext *pb = s->pb;
1948     AVStream *st = s->streams[pkt->stream_index];
1949     MXFStreamContext *sc = st->priv_data;
1950     MXFIndexEntry ie = {0};
1951
1952     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1953         mxf->index_entries = av_realloc(mxf->index_entries,
1954             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1955         if (!mxf->index_entries) {
1956             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1957             return -1;
1958         }
1959     }
1960
1961     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1962         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
1963             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1964             return -1;
1965         }
1966     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {
1967         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
1968             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
1969             return -1;
1970         }
1971     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {
1972         if (!mxf_parse_dv_frame(s, st, pkt)) {
1973             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
1974             return -1;
1975         }
1976     }
1977
1978     if (!mxf->header_written) {
1979         if (mxf->edit_unit_byte_count) {
1980             mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1981             mxf_write_klv_fill(s);
1982             mxf_write_index_table_segment(s);
1983         } else {
1984             mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1985         }
1986         mxf->header_written = 1;
1987     }
1988
1989     if (st->index == 0) {
1990         if (!mxf->edit_unit_byte_count &&
1991             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1992             !(ie.flags & 0x33)) { // I frame, Gop start
1993             mxf_write_klv_fill(s);
1994             mxf_write_partition(s, 1, 2, body_partition_key, 0);
1995
1996             mxf_write_klv_fill(s);
1997             mxf_write_index_table_segment(s);
1998         }
1999
2000         mxf_write_klv_fill(s);
2001         mxf_write_system_item(s);
2002
2003         if (!mxf->edit_unit_byte_count) {
2004             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2005             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2006             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2007             mxf->body_offset += KAG_SIZE; // size of system element
2008         }
2009         mxf->edit_units_count++;
2010     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2011         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2012             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2013     }
2014
2015     mxf_write_klv_fill(s);
2016     avio_write(pb, sc->track_essence_element_key, 16); // write key
2017     if (s->oformat == &ff_mxf_d10_muxer) {
2018         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2019             mxf_write_d10_video_packet(s, st, pkt);
2020         else
2021             mxf_write_d10_audio_packet(s, st, pkt);
2022     } else {
2023         klv_encode_ber4_length(pb, pkt->size); // write length
2024         avio_write(pb, pkt->data, pkt->size);
2025         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2026     }
2027
2028     avio_flush(pb);
2029
2030     return 0;
2031 }
2032
2033 static void mxf_write_random_index_pack(AVFormatContext *s)
2034 {
2035     MXFContext *mxf = s->priv_data;
2036     AVIOContext *pb = s->pb;
2037     uint64_t pos = avio_tell(pb);
2038     int i;
2039
2040     avio_write(pb, random_index_pack_key, 16);
2041     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
2042
2043     if (mxf->edit_unit_byte_count)
2044         avio_wb32(pb, 1); // BodySID of header partition
2045     else
2046         avio_wb32(pb, 0);
2047     avio_wb64(pb, 0); // offset of header partition
2048
2049     for (i = 0; i < mxf->body_partitions_count; i++) {
2050         avio_wb32(pb, 1); // BodySID
2051         avio_wb64(pb, mxf->body_partition_offset[i]);
2052     }
2053
2054     avio_wb32(pb, 0); // BodySID of footer partition
2055     avio_wb64(pb, mxf->footer_partition_offset);
2056
2057     avio_wb32(pb, avio_tell(pb) - pos + 4);
2058 }
2059
2060 static int mxf_write_footer(AVFormatContext *s)
2061 {
2062     MXFContext *mxf = s->priv_data;
2063     AVIOContext *pb = s->pb;
2064
2065     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2066
2067     mxf_write_klv_fill(s);
2068     mxf->footer_partition_offset = avio_tell(pb);
2069     if (mxf->edit_unit_byte_count) { // no need to repeat index
2070         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
2071     } else {
2072         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
2073
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             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
2085             mxf_write_klv_fill(s);
2086             mxf_write_index_table_segment(s);
2087         } else {
2088             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
2089         }
2090     }
2091
2092     ff_audio_interleave_close(s);
2093
2094     av_freep(&mxf->index_entries);
2095     av_freep(&mxf->body_partition_offset);
2096     av_freep(&mxf->timecode_track->priv_data);
2097     av_freep(&mxf->timecode_track);
2098
2099     mxf_free(s);
2100
2101     return 0;
2102 }
2103
2104 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2105 {
2106     int i, stream_count = 0;
2107
2108     for (i = 0; i < s->nb_streams; i++)
2109         stream_count += !!s->streams[i]->last_in_packet_buffer;
2110
2111     if (stream_count && (s->nb_streams == stream_count || flush)) {
2112         AVPacketList *pktl = s->packet_buffer;
2113         if (s->nb_streams != stream_count) {
2114             AVPacketList *last = NULL;
2115             // find last packet in edit unit
2116             while (pktl) {
2117                 if (!stream_count || pktl->pkt.stream_index == 0)
2118                     break;
2119                 last = pktl;
2120                 pktl = pktl->next;
2121                 stream_count--;
2122             }
2123             // purge packet queue
2124             while (pktl) {
2125                 AVPacketList *next = pktl->next;
2126
2127                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2128                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2129                 av_free_packet(&pktl->pkt);
2130                 av_freep(&pktl);
2131                 pktl = next;
2132             }
2133             if (last)
2134                 last->next = NULL;
2135             else {
2136                 s->packet_buffer = NULL;
2137                 s->packet_buffer_end= NULL;
2138                 goto out;
2139             }
2140             pktl = s->packet_buffer;
2141         }
2142
2143         *out = pktl->pkt;
2144         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
2145         s->packet_buffer = pktl->next;
2146         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2147             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2148         if(!s->packet_buffer)
2149             s->packet_buffer_end= NULL;
2150         av_freep(&pktl);
2151         return 1;
2152     } else {
2153     out:
2154         av_init_packet(out);
2155         return 0;
2156     }
2157 }
2158
2159 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2160 {
2161     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
2162     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
2163
2164     return next->dts > pkt->dts ||
2165         (next->dts == pkt->dts && sc->order < sc2->order);
2166 }
2167
2168 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2169 {
2170     return ff_audio_rechunk_interleave(s, out, pkt, flush,
2171                                mxf_interleave_get_packet, mxf_compare_timestamps);
2172 }
2173
2174 AVOutputFormat ff_mxf_muxer = {
2175     .name              = "mxf",
2176     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
2177     .mime_type         = "application/mxf",
2178     .extensions        = "mxf",
2179     .priv_data_size    = sizeof(MXFContext),
2180     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2181     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2182     .write_header      = mxf_write_header,
2183     .write_packet      = mxf_write_packet,
2184     .write_trailer     = mxf_write_footer,
2185     .flags             = AVFMT_NOTIMESTAMPS,
2186     .interleave_packet = mxf_interleave,
2187 };
2188
2189 AVOutputFormat ff_mxf_d10_muxer = {
2190     .name              = "mxf_d10",
2191     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
2192     .mime_type         = "application/mxf",
2193     .priv_data_size    = sizeof(MXFContext),
2194     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2195     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2196     .write_header      = mxf_write_header,
2197     .write_packet      = mxf_write_packet,
2198     .write_trailer     = mxf_write_footer,
2199     .flags             = AVFMT_NOTIMESTAMPS,
2200     .interleave_packet = mxf_interleave,
2201 };