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  * signal_standard, color_siting, store_user_comments, sample rate and klv_fill_key version
  25  * fixes sponsored by NOA GmbH
  26  */
  27
  28 /*
  29  * References
  30  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
  31  * SMPTE 377M MXF File Format Specifications
  32  * SMPTE 379M MXF Generic Container
  33  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
  34  * SMPTE 422M Mapping JPEG 2000 Codestreams into the MXF Generic Container
  35  * SMPTE RP210: SMPTE Metadata Dictionary
  36  * SMPTE RP224: Registry of SMPTE Universal Labels
  37  */
  38
  39 #include <inttypes.h>
  40 #include <math.h>
  41 #include <time.h>
  42
  43 #include "libavutil/opt.h"
  44 #include "libavutil/random_seed.h"
  45 #include "libavutil/timecode.h"
  46 #include "libavutil/avassert.h"
  47 #include "libavutil/pixdesc.h"
  48 #include "libavutil/time_internal.h"
  49 #include "libavcodec/bytestream.h"
  50 #include "libavcodec/dnxhddata.h"
  51 #include "libavcodec/dv_profile.h"
  52 #include "libavcodec/h264_ps.h"
  53 #include "libavcodec/golomb.h"
  54 #include "libavcodec/internal.h"
  55 #include "audiointerleave.h"
  56 #include "avformat.h"
  57 #include "avio_internal.h"
  58 #include "internal.h"
  59 #include "avc.h"
  60 #include "mxf.h"
  61 #include "config.h"
  62
  63 extern AVOutputFormat ff_mxf_d10_muxer;
  64 extern AVOutputFormat ff_mxf_opatom_muxer;
  65
  66 #define EDIT_UNITS_PER_BODY 250
  67 #define KAG_SIZE 512
  68
  69 typedef struct MXFLocalTagPair {
  70     int local_tag;
  71     UID uid;
  72 } MXFLocalTagPair;
  73
  74 typedef struct MXFIndexEntry {
  75     uint8_t flags;
  76     uint64_t offset;
  77     unsigned slice_offset; ///< offset of audio slice
  78     uint16_t temporal_ref;
  79 } MXFIndexEntry;
  80
  81 typedef struct MXFStreamContext {
  82     AudioInterleaveContext aic;
  83     UID track_essence_element_key;
  84     int index;               ///< index in mxf_essence_container_uls table
  85     const UID *codec_ul;
  86     int order;               ///< interleaving order if dts are equal
  87     int interlaced;          ///< whether picture is interlaced
  88     int field_dominance;     ///< tff=1, bff=2
  89     int component_depth;
  90     int color_siting;
  91     int signal_standard;
  92     int h_chroma_sub_sample;
  93     int v_chroma_sub_sample;
  94     int temporal_reordering;
  95     AVRational aspect_ratio; ///< display aspect ratio
  96     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
  97     int video_bit_rate;
  98     int slice_offset;
  99     int frame_size;          ///< frame size in bytes
 100     int seq_closed_gop;      ///< all gops in sequence are closed, used in mpeg-2 descriptor
 101     int max_gop;             ///< maximum gop size, used by mpeg-2 descriptor
 102     int b_picture_count;     ///< maximum number of consecutive b pictures, used in mpeg-2 descriptor
 103     int low_delay;           ///< low delay, used in mpeg-2 descriptor
 104     int avc_intra;
 105 } MXFStreamContext;
 106
 107 typedef struct MXFContainerEssenceEntry {
 108     UID container_ul;
 109     UID element_ul;
 110     UID codec_ul;
 111     void (*write_desc)(AVFormatContext *, AVStream *);
 112 } MXFContainerEssenceEntry;
 113
 114 typedef struct MXFPackage {
 115     char *name;
 116     enum MXFMetadataSetType type;
 117     int instance;
 118     struct MXFPackage *ref;
 119 } MXFPackage;
 120
 121 enum ULIndex {
 122     INDEX_MPEG2 = 0,
 123     INDEX_AES3,
 124     INDEX_WAV,
 125     INDEX_D10_625_50_50_VIDEO,
 126     INDEX_D10_625_50_50_AUDIO,
 127     INDEX_D10_525_60_50_VIDEO,
 128     INDEX_D10_525_60_50_AUDIO,
 129     INDEX_D10_625_50_40_VIDEO,
 130     INDEX_D10_625_50_40_AUDIO,
 131     INDEX_D10_525_60_40_VIDEO,
 132     INDEX_D10_525_60_40_AUDIO,
 133     INDEX_D10_625_50_30_VIDEO,
 134     INDEX_D10_625_50_30_AUDIO,
 135     INDEX_D10_525_60_30_VIDEO,
 136     INDEX_D10_525_60_30_AUDIO,
 137     INDEX_DV,
 138     INDEX_DV25_525_60,
 139     INDEX_DV25_625_50,
 140     INDEX_DV25_525_60_IEC,
 141     INDEX_DV25_625_50_IEC,
 142     INDEX_DV50_525_60,
 143     INDEX_DV50_625_50,
 144     INDEX_DV100_1080_60,
 145     INDEX_DV100_1080_50,
 146     INDEX_DV100_720_60,
 147     INDEX_DV100_720_50,
 148     INDEX_DNXHD,
 149     INDEX_JPEG2000,
 150     INDEX_H264,
 151     INDEX_S436M,
 152     INDEX_PRORES,
 153 };
 154
 155 static const struct {
 156     enum AVCodecID id;
 157     enum ULIndex index;
 158 } mxf_essence_mappings[] = {
 159     { AV_CODEC_ID_MPEG2VIDEO, INDEX_MPEG2 },
 160     { AV_CODEC_ID_PCM_S24LE,  INDEX_AES3 },
 161     { AV_CODEC_ID_PCM_S16LE,  INDEX_AES3 },
 162     { AV_CODEC_ID_DVVIDEO,    INDEX_DV },
 163     { AV_CODEC_ID_DNXHD,      INDEX_DNXHD },
 164     { AV_CODEC_ID_JPEG2000,   INDEX_JPEG2000 },
 165     { AV_CODEC_ID_H264,       INDEX_H264 },
 166     { AV_CODEC_ID_PRORES,     INDEX_PRORES },
 167     { AV_CODEC_ID_NONE }
 168 };
 169
 170 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
 171 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
 172 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
 173 static void mxf_write_h264_desc(AVFormatContext *s, AVStream *st);
 174 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
 175 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
 176 static void mxf_write_s436m_anc_desc(AVFormatContext *s, AVStream *st);
 177
 178 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
 179     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 180       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 181       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 182       mxf_write_mpegvideo_desc },
 183     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 184       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 185       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 186       mxf_write_aes3_desc },
 187     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 188       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 189       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 190       mxf_write_wav_desc },
 191     // D-10 625/50 PAL 50mb/s
 192     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 193       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 194       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 195       mxf_write_cdci_desc },
 196     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 197       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 198       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 199       mxf_write_generic_sound_desc },
 200     // D-10 525/60 NTSC 50mb/s
 201     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 202       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 203       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 204       mxf_write_cdci_desc },
 205     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 206       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 207       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 208       mxf_write_generic_sound_desc },
 209     // D-10 625/50 PAL 40mb/s
 210     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 211       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 212       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 213       mxf_write_cdci_desc },
 214     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 215       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 216       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 217       mxf_write_generic_sound_desc },
 218     // D-10 525/60 NTSC 40mb/s
 219     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 220       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 221       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 222       mxf_write_cdci_desc },
 223     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 224       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 225       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 226       mxf_write_generic_sound_desc },
 227     // D-10 625/50 PAL 30mb/s
 228     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 229       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 230       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 231       mxf_write_cdci_desc },
 232     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 233       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 234       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 235       mxf_write_generic_sound_desc },
 236     // D-10 525/60 NTSC 30mb/s
 237     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 238       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 239       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 240       mxf_write_cdci_desc },
 241     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 242       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 243       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 244       mxf_write_generic_sound_desc },
 245     // DV Unknown
 246     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
 247       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 248       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
 249       mxf_write_cdci_desc },
 250
 251     // DV25 525/60
 252     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },
 253       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 254       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 255       mxf_write_cdci_desc },
 256     // DV25 625/50
 257     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },
 258       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 259       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },
 260       mxf_write_cdci_desc },
 261
 262     // IEC DV25 525/60
 263     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x01,0x01 },
 264       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 265       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 266       mxf_write_cdci_desc },
 267     // IEC DV25 625/50
 268     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x02,0x01 },
 269       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 270       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x02,0x00 },
 271       mxf_write_cdci_desc },
 272
 273       // DV50 525/60
 274     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },
 275       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 276       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },
 277       mxf_write_cdci_desc },
 278     // DV50 625/50
 279     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },
 280       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 281       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },
 282       mxf_write_cdci_desc },
 283     // DV100 1080/60
 284     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },
 285       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 286       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },
 287       mxf_write_cdci_desc },
 288     // DV100 1080/50
 289     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },
 290       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 291       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },
 292       mxf_write_cdci_desc },
 293     // DV100 720/60
 294     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },
 295       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 296       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },
 297       mxf_write_cdci_desc },
 298     // DV100 720/50
 299     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },
 300       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 301       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },
 302       mxf_write_cdci_desc },
 303     // DNxHD
 304     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 305       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 306       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
 307       mxf_write_cdci_desc },
 308     // JPEG2000
 309     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },
 310       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },
 311       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },
 312       mxf_write_cdci_desc },
 313     // H.264
 314     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },
 315       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 316       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 317       mxf_write_h264_desc },
 318     // S436M ANC
 319     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 },
 320       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x17,0x01,0x02,0x00 },
 321       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x01,0x5C,0x00 },
 322       mxf_write_s436m_anc_desc },
 323     // ProRes
 324     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x0d,0x01,0x03,0x01,0x02,0x1c,0x01,0x00 },
 325       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x17,0x00 },
 326       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x03,0x00 },
 327       mxf_write_cdci_desc },
 328     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 329       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 330       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 331       NULL },
 332 };
 333
 334 typedef struct MXFContext {
 335     AVClass *av_class;
 336     int64_t footer_partition_offset;
 337     int essence_container_count;
 338     AVRational time_base;
 339     int header_written;
 340     MXFIndexEntry *index_entries;
 341     unsigned edit_units_count;
 342     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 343     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 344     int last_indexed_edit_unit;
 345     uint64_t *body_partition_offset;
 346     unsigned body_partitions_count;
 347     int last_key_index;  ///< index of last key frame
 348     uint64_t duration;
 349     AVTimecode tc;       ///< timecode context
 350     AVStream *timecode_track;
 351     int timecode_base;       ///< rounded time code base (25 or 30)
 352     int edit_unit_byte_count; ///< fixed edit unit byte count
 353     int content_package_rate; ///< content package rate in system element, see SMPTE 326M
 354     uint64_t body_offset;
 355     uint32_t instance_number;
 356     uint8_t umid[16];        ///< unique material identifier
 357     int channel_count;
 358     int signal_standard;
 359     uint32_t tagged_value_count;
 360     AVRational audio_edit_rate;
 361     int store_user_comments;
 362     int track_instance_count; // used to generate MXFTrack uuids
 363     int cbr_index;           ///< use a constant bitrate index
 364 } MXFContext;
 365
 366 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 367 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 368
 369 /**
 370  * complete key for operation pattern, partitions, and primer pack
 371  */
 372 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 373 static const uint8_t opatom_ul[]                   = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x02,0x01,0x10,0x03,0x00,0x00 };
 374 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 375 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 376 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 377 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 378 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
 379 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
 380 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 381 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 382
 383 /**
 384  * partial key for header metadata
 385  */
 386 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 387 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 388
 389 /**
 390  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 391  *             https://smpte-ra.org/sites/default/files/Labels.xml
 392  */
 393 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 394     // preface set
 395     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 396     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 397     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 398     { 0x3B07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x04,0x00,0x00,0x00}}, /* Object Model Version */
 399     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 400     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 401     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 402     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 403     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 404     // Identification
 405     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 406     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 407     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 408     { 0x3C03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x04,0x00,0x00,0x00}}, /* Product Version */
 409     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 410     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 411     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 412     { 0x3C07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x0A,0x00,0x00,0x00}}, /* Toolkit Version */
 413     { 0x3C08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x06,0x01,0x00,0x00}}, /* Platform */
 414     // Content Storage
 415     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 416     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 417     // Essence Container Data
 418     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 419     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 420     // Package
 421     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 422     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 423     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 424     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */
 425     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 426     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 427     // Track
 428     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 429     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 430     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 431     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 432     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 433     // Sequence
 434     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 435     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 436     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 437     // Source Clip
 438     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 439     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 440     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 441     // Timecode Component
 442     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 443     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 444     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 445     // File Descriptor
 446     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 447     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 448     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 449     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */
 450     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 451     // Generic Picture Essence Descriptor
 452     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 453     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 454     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 455     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 456     { 0x3216, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x03,0x02,0x08,0x00,0x00,0x00}}, /* Stored F2 Offset */
 457     { 0x3205, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x08,0x00,0x00,0x00}}, /* Sampled Width */
 458     { 0x3204, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x07,0x00,0x00,0x00}}, /* Sampled Height */
 459     { 0x3206, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x09,0x00,0x00,0x00}}, /* Sampled X Offset */
 460     { 0x3207, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0A,0x00,0x00,0x00}}, /* Sampled Y Offset */
 461     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 462     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 463     { 0x320A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0D,0x00,0x00,0x00}}, /* Display X offset */
 464     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */
 465     { 0x3217, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x03,0x02,0x07,0x00,0x00,0x00}}, /* Display F2 offset */
 466     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 467     { 0x3210, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x02,0x01,0x01,0x01,0x02,0x00}}, /* Transfer characteristic */
 468     { 0x3213, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x18,0x01,0x02,0x00,0x00,0x00,0x00}}, /* Image Start Offset */
 469     { 0x3214, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x18,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Image End Offset */
 470     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 471     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 472     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */
 473     // CDCI Picture Essence Descriptor
 474     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 475     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 476     { 0x3308, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x01,0x10,0x00,0x00,0x00}}, /* Vertical Subsampling */
 477     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */
 478     { 0x3307, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x18,0x01,0x04,0x00,0x00,0x00,0x00}}, /* Padding Bits */
 479     { 0x3304, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x03,0x03,0x00,0x00,0x00}}, /* Black Ref level */
 480     { 0x3305, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x03,0x04,0x00,0x00,0x00}}, /* White Ref level */
 481     { 0x3306, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x05,0x00,0x00,0x00}}, /* Color Range */
 482     // Generic Sound Essence Descriptor
 483     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 484     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 485     { 0x3D04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x02,0x01,0x01,0x03,0x00,0x00,0x00}}, /* Audio Ref Level */
 486     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 487     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 488     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 489     // Index Table Segment
 490     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 491     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 492     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 493     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 494     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 495     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 496     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 497     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 498     // MPEG video Descriptor
 499     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 500     { 0x8003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x05,0x00,0x00}}, /* LowDelay */
 501     { 0x8004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x06,0x00,0x00}}, /* ClosedGOP */
 502     { 0x8006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x08,0x00,0x00}}, /* MaxGOP */
 503     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 504     { 0x8008, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x09,0x00,0x00}}, /* BPictureCount */
 505     // Wave Audio Essence Descriptor
 506     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 507     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 508 };
 509
 510 static const MXFLocalTagPair mxf_avc_subdescriptor_local_tags[] = {
 511     { 0x8100, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x04,0x06,0x10,0x00,0x00}}, /* SubDescriptors */
 512     { 0x8200, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x0E,0x04,0x01,0x06,0x06,0x01,0x0E,0x00,0x00}}, /* AVC Decoding Delay */
 513     { 0x8201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x0E,0x04,0x01,0x06,0x06,0x01,0x0A,0x00,0x00}}, /* AVC Profile */
 514     { 0x8202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x0E,0x04,0x01,0x06,0x06,0x01,0x0D,0x00,0x00}}, /* AVC Level */
 515 };
 516
 517 static const MXFLocalTagPair mxf_user_comments_local_tag[] = {
 518     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */
 519     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */
 520     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */
 521 };
 522
 523 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 524 {
 525     avio_write(pb, uuid_base, 12);
 526     avio_wb16(pb, type);
 527     avio_wb16(pb, value);
 528 }
 529
 530 static void mxf_write_umid(AVFormatContext *s, int type)
 531 {
 532     MXFContext *mxf = s->priv_data;
 533     avio_write(s->pb, umid_ul, 13);
 534     avio_wb24(s->pb, mxf->instance_number);
 535     avio_write(s->pb, mxf->umid, 15);
 536     avio_w8(s->pb, type);
 537 }
 538
 539 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 540 {
 541     avio_wb32(pb, ref_count);
 542     avio_wb32(pb, 16);
 543 }
 544
 545 static int klv_ber_length(uint64_t len)
 546 {
 547     if (len < 128)
 548         return 1;
 549     else
 550         return (av_log2(len) >> 3) + 2;
 551 }
 552
 553 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 554 {
 555     // Determine the best BER size
 556     int size;
 557     if (len < 128) {
 558         //short form
 559         avio_w8(pb, len);
 560         return 1;
 561     }
 562
 563     size = (av_log2(len) >> 3) + 1;
 564
 565     // long form
 566     avio_w8(pb, 0x80 + size);
 567     while(size) {
 568         size--;
 569         avio_w8(pb, len >> 8 * size & 0xff);
 570     }
 571     return 0;
 572 }
 573
 574 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 575 {
 576     avio_w8(pb, 0x80 + 3);
 577     avio_wb24(pb, len);
 578 }
 579
 580 static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len)
 581 {
 582     avio_w8(pb, 0x80 + 8);
 583     avio_wb64(pb, len);
 584 }
 585
 586 /*
 587  * Get essence container ul index
 588  */
 589 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 590 {
 591     int i;
 592     for (i = 0; mxf_essence_mappings[i].id; i++)
 593         if (mxf_essence_mappings[i].id == id)
 594             return mxf_essence_mappings[i].index;
 595     return -1;
 596 }
 597
 598 static void mxf_write_local_tags(AVIOContext *pb, const MXFLocalTagPair *local_tags, int count)
 599 {
 600     int i;
 601     for (i = 0; i < count; i++) {
 602         avio_wb16(pb, local_tags[i].local_tag);
 603         avio_write(pb, local_tags[i].uid, 16);
 604     }
 605 }
 606
 607 static void mxf_write_primer_pack(AVFormatContext *s)
 608 {
 609     MXFContext *mxf = s->priv_data;
 610     AVIOContext *pb = s->pb;
 611     int local_tag_number, i = 0;
 612     int avc_tags_count = 0;
 613
 614     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 615     local_tag_number += mxf->store_user_comments * FF_ARRAY_ELEMS(mxf_user_comments_local_tag);
 616
 617     for (i = 0; i < s->nb_streams; i++) {
 618         MXFStreamContext *sc = s->streams[i]->priv_data;
 619         if (s->streams[i]->codecpar->codec_id == AV_CODEC_ID_H264 && !sc->avc_intra) {
 620             avc_tags_count = FF_ARRAY_ELEMS(mxf_avc_subdescriptor_local_tags);
 621             local_tag_number += avc_tags_count;
 622         }
 623     }
 624
 625     avio_write(pb, primer_pack_key, 16);
 626     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 627
 628     avio_wb32(pb, local_tag_number); // local_tag num
 629     avio_wb32(pb, 18); // item size, always 18 according to the specs
 630
 631     for (i = 0; i < FF_ARRAY_ELEMS(mxf_local_tag_batch); i++) {
 632         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 633         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 634     }
 635     if (mxf->store_user_comments)
 636         for (i = 0; i < FF_ARRAY_ELEMS(mxf_user_comments_local_tag); i++) {
 637             avio_wb16(pb, mxf_user_comments_local_tag[i].local_tag);
 638             avio_write(pb, mxf_user_comments_local_tag[i].uid, 16);
 639         }
 640     if (avc_tags_count > 0)
 641         mxf_write_local_tags(pb, mxf_avc_subdescriptor_local_tags, avc_tags_count);
 642 }
 643
 644 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
 645 {
 646     avio_wb16(pb, tag);
 647     avio_wb16(pb, size);
 648 }
 649
 650 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 651 {
 652     avio_write(pb, header_metadata_key, 13);
 653     avio_wb24(pb, value);
 654 }
 655
 656 static void mxf_free(AVFormatContext *s)
 657 {
 658     int i;
 659
 660     for (i = 0; i < s->nb_streams; i++) {
 661         AVStream *st = s->streams[i];
 662         av_freep(&st->priv_data);
 663     }
 664 }
 665
 666 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 667 {
 668     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 669     while (uls->uid[0]) {
 670         if (type == uls->id)
 671             break;
 672         uls++;
 673     }
 674     return uls;
 675 }
 676
 677 //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors
 678 #define DESCRIPTOR_COUNT(essence_container_count) \
 679     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)
 680
 681 static void mxf_write_essence_container_refs(AVFormatContext *s)
 682 {
 683     MXFContext *c = s->priv_data;
 684     AVIOContext *pb = s->pb;
 685     int i;
 686
 687     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));
 688     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 689     for (i = 0; i < s->nb_streams; i++) {
 690         MXFStreamContext *sc = s->streams[i]->priv_data;
 691         // check first track of essence container type and only write it once
 692         if (sc->track_essence_element_key[15] != 0)
 693             continue;
 694         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 695         if (c->essence_container_count == 1)
 696             break;
 697     }
 698
 699     if (c->essence_container_count > 1)
 700         avio_write(pb, multiple_desc_ul, 16);
 701 }
 702
 703 static void mxf_write_preface(AVFormatContext *s)
 704 {
 705     MXFContext *mxf = s->priv_data;
 706     AVIOContext *pb = s->pb;
 707
 708     mxf_write_metadata_key(pb, 0x012f00);
 709     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 710     klv_encode_ber_length(pb, 138 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 711
 712     // write preface set uid
 713     mxf_write_local_tag(pb, 16, 0x3C0A);
 714     mxf_write_uuid(pb, Preface, 0);
 715     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 716
 717     // last modified date
 718     mxf_write_local_tag(pb, 8, 0x3B02);
 719     avio_wb64(pb, mxf->timestamp);
 720
 721     // write version
 722     mxf_write_local_tag(pb, 2, 0x3B05);
 723     avio_wb16(pb, 259); // v1.3
 724
 725     // Object Model Version
 726     mxf_write_local_tag(pb, 4, 0x3B07);
 727     avio_wb32(pb, 1);
 728
 729     // write identification_refs
 730     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 731     mxf_write_refs_count(pb, 1);
 732     mxf_write_uuid(pb, Identification, 0);
 733
 734     // write content_storage_refs
 735     mxf_write_local_tag(pb, 16, 0x3B03);
 736     mxf_write_uuid(pb, ContentStorage, 0);
 737
 738     // operational pattern
 739     mxf_write_local_tag(pb, 16, 0x3B09);
 740     if (s->oformat == &ff_mxf_opatom_muxer)
 741         avio_write(pb, opatom_ul, 16);
 742     else
 743         avio_write(pb, op1a_ul, 16);
 744
 745     // write essence_container_refs
 746     mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);
 747     mxf_write_essence_container_refs(s);
 748
 749     // write dm_scheme_refs
 750     mxf_write_local_tag(pb, 8, 0x3B0B);
 751     avio_wb64(pb, 0);
 752 }
 753
 754 /*
 755  * Returns the length of the UTF-16 string, in 16-bit characters, that would result
 756  * from decoding the utf-8 string.
 757  */
 758 static uint64_t mxf_utf16len(const char *utf8_str)
 759 {
 760     const uint8_t *q = utf8_str;
 761     uint64_t size = 0;
 762     while (*q) {
 763         uint32_t ch;
 764         GET_UTF8(ch, *q++, goto invalid;)
 765         if (ch < 0x10000)
 766             size++;
 767         else
 768             size += 2;
 769         continue;
 770 invalid:
 771         av_log(NULL, AV_LOG_ERROR, "Invalid UTF8 sequence in mxf_utf16len\n\n");
 772     }
 773     size += 1;
 774     return size;
 775 }
 776
 777 /*
 778  * Returns the calculated length a local tag containing an utf-8 string as utf-16
 779  */
 780 static int mxf_utf16_local_tag_length(const char *utf8_str)
 781 {
 782     uint64_t size;
 783
 784     if (!utf8_str)
 785         return 0;
 786
 787     size = mxf_utf16len(utf8_str);
 788     if (size >= UINT16_MAX/2) {
 789         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 790         return 0;
 791     }
 792
 793     return 4 + size * 2;
 794 }
 795
 796 /*
 797  * Write a local tag containing an utf-8 string as utf-16
 798  */
 799 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
 800 {
 801     uint64_t size = mxf_utf16len(value);
 802
 803     if (size >= UINT16_MAX/2) {
 804         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 805         return;
 806     }
 807
 808     mxf_write_local_tag(pb, size*2, tag);
 809     avio_put_str16be(pb, value);
 810 }
 811
 812 static void store_version(AVFormatContext *s){
 813     AVIOContext *pb = s->pb;
 814
 815     if (s->flags & AVFMT_FLAG_BITEXACT) {
 816         avio_wb16(pb, 0); // major
 817         avio_wb16(pb, 0); // minor
 818         avio_wb16(pb, 0); // tertiary
 819     } else {
 820         avio_wb16(pb, LIBAVFORMAT_VERSION_MAJOR); // major
 821         avio_wb16(pb, LIBAVFORMAT_VERSION_MINOR); // minor
 822         avio_wb16(pb, LIBAVFORMAT_VERSION_MICRO); // tertiary
 823     }
 824     avio_wb16(pb, 0); // patch
 825     avio_wb16(pb, 0); // release
 826 }
 827
 828 static void mxf_write_identification(AVFormatContext *s)
 829 {
 830     MXFContext *mxf = s->priv_data;
 831     AVIOContext *pb = s->pb;
 832     const char *company = "FFmpeg";
 833     const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
 834     const char *version;
 835     int length;
 836
 837     mxf_write_metadata_key(pb, 0x013000);
 838     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 839
 840     version = s->flags & AVFMT_FLAG_BITEXACT ?
 841         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 842     length = 100 +mxf_utf16_local_tag_length(company) +
 843                   mxf_utf16_local_tag_length(product) +
 844                   mxf_utf16_local_tag_length(version);
 845     klv_encode_ber_length(pb, length);
 846
 847     // write uid
 848     mxf_write_local_tag(pb, 16, 0x3C0A);
 849     mxf_write_uuid(pb, Identification, 0);
 850     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 851
 852     // write generation uid
 853     mxf_write_local_tag(pb, 16, 0x3C09);
 854     mxf_write_uuid(pb, Identification, 1);
 855     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 856     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 857
 858     mxf_write_local_tag(pb, 10, 0x3C03); // Product Version
 859     store_version(s);
 860
 861     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 862
 863     // write product uid
 864     mxf_write_local_tag(pb, 16, 0x3C05);
 865     mxf_write_uuid(pb, Identification, 2);
 866
 867     // modification date
 868     mxf_write_local_tag(pb, 8, 0x3C06);
 869     avio_wb64(pb, mxf->timestamp);
 870
 871     mxf_write_local_tag(pb, 10, 0x3C07); // Toolkit Version
 872     store_version(s);
 873 }
 874
 875 static void mxf_write_content_storage(AVFormatContext *s, MXFPackage *packages, int package_count)
 876 {
 877     AVIOContext *pb = s->pb;
 878     int i;
 879
 880     mxf_write_metadata_key(pb, 0x011800);
 881     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 882     klv_encode_ber_length(pb, 60 + (16 * package_count));
 883
 884     // write uid
 885     mxf_write_local_tag(pb, 16, 0x3C0A);
 886     mxf_write_uuid(pb, ContentStorage, 0);
 887     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 888
 889     // write package reference
 890     mxf_write_local_tag(pb, 16 * package_count + 8, 0x1901);
 891     mxf_write_refs_count(pb, package_count);
 892     for (i = 0; i < package_count; i++) {
 893         mxf_write_uuid(pb, packages[i].type, packages[i].instance);
 894     }
 895
 896     // write essence container data
 897     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 898     mxf_write_refs_count(pb, 1);
 899     mxf_write_uuid(pb, EssenceContainerData, 0);
 900 }
 901
 902 static void mxf_write_track(AVFormatContext *s, AVStream *st, MXFPackage *package)
 903 {
 904     MXFContext *mxf = s->priv_data;
 905     AVIOContext *pb = s->pb;
 906     MXFStreamContext *sc = st->priv_data;
 907
 908     mxf_write_metadata_key(pb, 0x013b00);
 909     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 910     klv_encode_ber_length(pb, 80);
 911
 912     // write track uid
 913     mxf_write_local_tag(pb, 16, 0x3C0A);
 914     mxf_write_uuid(pb, Track, mxf->track_instance_count);
 915     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 916
 917     // write track id
 918     mxf_write_local_tag(pb, 4, 0x4801);
 919     avio_wb32(pb, st->index+2);
 920
 921     // write track number
 922     mxf_write_local_tag(pb, 4, 0x4804);
 923     if (package->type == MaterialPackage)
 924         avio_wb32(pb, 0); // track number of material package is 0
 925     else
 926         avio_write(pb, sc->track_essence_element_key + 12, 4);
 927
 928     // write edit rate
 929     mxf_write_local_tag(pb, 8, 0x4B01);
 930
 931     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer) {
 932         avio_wb32(pb, mxf->tc.rate.num);
 933         avio_wb32(pb, mxf->tc.rate.den);
 934     } else {
 935         avio_wb32(pb, mxf->time_base.den);
 936         avio_wb32(pb, mxf->time_base.num);
 937     }
 938
 939     // write origin
 940     mxf_write_local_tag(pb, 8, 0x4B02);
 941     avio_wb64(pb, 0);
 942
 943     // write sequence refs
 944     mxf_write_local_tag(pb, 16, 0x4803);
 945     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
 946 }
 947
 948 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 };
 949
 950 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 951 {
 952     MXFContext *mxf = s->priv_data;
 953     AVIOContext *pb = s->pb;
 954
 955     // find data define uls
 956     mxf_write_local_tag(pb, 16, 0x0201);
 957     if (st == mxf->timecode_track)
 958         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 959     else {
 960         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codecpar->codec_type);
 961         avio_write(pb, data_def_ul->uid, 16);
 962     }
 963
 964     // write duration
 965     mxf_write_local_tag(pb, 8, 0x0202);
 966
 967     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
 968         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
 969     } else {
 970         avio_wb64(pb, mxf->duration);
 971     }
 972 }
 973
 974 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, MXFPackage *package)
 975 {
 976     MXFContext *mxf = s->priv_data;
 977     AVIOContext *pb = s->pb;
 978     enum MXFMetadataSetType component;
 979
 980     mxf_write_metadata_key(pb, 0x010f00);
 981     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 982     klv_encode_ber_length(pb, 80);
 983
 984     mxf_write_local_tag(pb, 16, 0x3C0A);
 985     mxf_write_uuid(pb, Sequence, mxf->track_instance_count);
 986
 987     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 988     mxf_write_common_fields(s, st);
 989
 990     // write structural component
 991     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 992     mxf_write_refs_count(pb, 1);
 993     if (st == mxf->timecode_track)
 994         component = TimecodeComponent;
 995     else
 996         component = SourceClip;
 997
 998     mxf_write_uuid(pb, component, mxf->track_instance_count);
 999 }
1000
1001 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
1002 {
1003     MXFContext *mxf = s->priv_data;
1004     AVIOContext *pb = s->pb;
1005
1006     mxf_write_metadata_key(pb, 0x011400);
1007     klv_encode_ber_length(pb, 75);
1008
1009     // UID
1010     mxf_write_local_tag(pb, 16, 0x3C0A);
1011     mxf_write_uuid(pb, TimecodeComponent, mxf->track_instance_count);
1012
1013     mxf_write_common_fields(s, st);
1014
1015     // Start Time Code
1016     mxf_write_local_tag(pb, 8, 0x1501);
1017     avio_wb64(pb, mxf->tc.start);
1018
1019     // Rounded Time Code Base
1020     mxf_write_local_tag(pb, 2, 0x1502);
1021     avio_wb16(pb, mxf->timecode_base);
1022
1023     // Drop Frame
1024     mxf_write_local_tag(pb, 1, 0x1503);
1025     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
1026 }
1027
1028 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, MXFPackage *package)
1029 {
1030     MXFContext *mxf = s->priv_data;
1031     AVIOContext *pb = s->pb;
1032     int i;
1033
1034     mxf_write_metadata_key(pb, 0x011100);
1035     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
1036     klv_encode_ber_length(pb, 108);
1037
1038     // write uid
1039     mxf_write_local_tag(pb, 16, 0x3C0A);
1040     mxf_write_uuid(pb, SourceClip, mxf->track_instance_count);
1041
1042     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
1043     mxf_write_common_fields(s, st);
1044
1045     // write start_position
1046     mxf_write_local_tag(pb, 8, 0x1201);
1047     avio_wb64(pb, 0);
1048
1049     // write source package uid, end of the reference
1050     mxf_write_local_tag(pb, 32, 0x1101);
1051     if (!package->ref) {
1052         for (i = 0; i < 4; i++)
1053             avio_wb64(pb, 0);
1054     } else
1055         mxf_write_umid(s, package->ref->instance);
1056
1057     // write source track id
1058     mxf_write_local_tag(pb, 4, 0x1102);
1059     if (package->type == SourcePackage && !package->ref)
1060         avio_wb32(pb, 0);
1061     else
1062         avio_wb32(pb, st->index+2);
1063 }
1064
1065 static void mxf_write_tape_descriptor(AVFormatContext *s)
1066 {
1067     AVIOContext *pb = s->pb;
1068
1069     mxf_write_metadata_key(pb, 0x012e00);
1070     PRINT_KEY(s, "tape descriptor key", pb->buf_ptr - 16);
1071     klv_encode_ber_length(pb, 20);
1072     mxf_write_local_tag(pb, 16, 0x3C0A);
1073     mxf_write_uuid(pb, TapeDescriptor, 0);
1074     PRINT_KEY(s, "tape_desc uid", pb->buf_ptr - 16);
1075 }
1076
1077
1078 static void mxf_write_multi_descriptor(AVFormatContext *s)
1079 {
1080     MXFContext *mxf = s->priv_data;
1081     AVIOContext *pb = s->pb;
1082     const uint8_t *ul;
1083     int i;
1084
1085     mxf_write_metadata_key(pb, 0x014400);
1086     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
1087     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
1088
1089     mxf_write_local_tag(pb, 16, 0x3C0A);
1090     mxf_write_uuid(pb, MultipleDescriptor, 0);
1091     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
1092
1093     // write sample rate
1094     mxf_write_local_tag(pb, 8, 0x3001);
1095     avio_wb32(pb, mxf->time_base.den);
1096     avio_wb32(pb, mxf->time_base.num);
1097
1098     // write essence container ul
1099     mxf_write_local_tag(pb, 16, 0x3004);
1100     if (mxf->essence_container_count > 1)
1101         ul = multiple_desc_ul;
1102     else {
1103         MXFStreamContext *sc = s->streams[0]->priv_data;
1104         ul = mxf_essence_container_uls[sc->index].container_ul;
1105     }
1106     avio_write(pb, ul, 16);
1107
1108     // write sub descriptor refs
1109     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
1110     mxf_write_refs_count(pb, s->nb_streams);
1111     for (i = 0; i < s->nb_streams; i++)
1112         mxf_write_uuid(pb, SubDescriptor, i);
1113 }
1114
1115 static int64_t mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key)
1116 {
1117     MXFContext *mxf = s->priv_data;
1118     MXFStreamContext *sc = st->priv_data;
1119     AVIOContext *pb = s->pb;
1120     int64_t pos;
1121
1122     avio_write(pb, key, 16);
1123     klv_encode_ber4_length(pb, 0);
1124     pos = avio_tell(pb);
1125
1126     mxf_write_local_tag(pb, 16, 0x3C0A);
1127     mxf_write_uuid(pb, SubDescriptor, st->index);
1128
1129     mxf_write_local_tag(pb, 4, 0x3006);
1130     avio_wb32(pb, st->index+2);
1131
1132     mxf_write_local_tag(pb, 8, 0x3001);
1133     if (s->oformat == &ff_mxf_d10_muxer) {
1134         avio_wb32(pb, mxf->time_base.den);
1135         avio_wb32(pb, mxf->time_base.num);
1136     } else {
1137         if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S16LE ||
1138             st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
1139             avio_wb32(pb, st->codecpar->sample_rate);
1140             avio_wb32(pb, 1);
1141         } else {
1142             avio_wb32(pb, mxf->time_base.den);
1143             avio_wb32(pb, mxf->time_base.num);
1144         }
1145     }
1146
1147     mxf_write_local_tag(pb, 16, 0x3004);
1148     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1149
1150     return pos;
1151 }
1152
1153 static const UID mxf_s436m_anc_descriptor_key = { 0x06,0x0e,0x2b,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x5c,0x00 };
1154 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
1155 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
1156 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
1157 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
1158 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
1159
1160 static const UID mxf_avc_subdescriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x6E,0x00 };
1161
1162 static int get_trc(UID ul, enum AVColorTransferCharacteristic trc)
1163 {
1164     switch (trc){
1165     case AVCOL_TRC_GAMMA28   :
1166     case AVCOL_TRC_GAMMA22   :
1167         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x01,0x00,0x00}), 16);
1168         return 0;
1169     case AVCOL_TRC_BT709     :
1170     case AVCOL_TRC_SMPTE170M :
1171         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x02,0x00,0x00}), 16);
1172         return 0;
1173     case AVCOL_TRC_SMPTE240M :
1174         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x03,0x00,0x00}), 16);
1175         return 0;
1176     case AVCOL_TRC_BT1361_ECG:
1177         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x06,0x04,0x01,0x01,0x01,0x01,0x05,0x00,0x00}), 16);
1178         return 0;
1179     case AVCOL_TRC_LINEAR    :
1180         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x06,0x04,0x01,0x01,0x01,0x01,0x06,0x00,0x00}), 16);
1181         return 0;
1182     case AVCOL_TRC_SMPTE428  :
1183         memcpy(ul, ((UID){0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x08,0x04,0x01,0x01,0x01,0x01,0x07,0x00,0x00}), 16);
1184         return 0;
1185     default:
1186         return -1;
1187     }
1188 }
1189
1190 static int64_t mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key)
1191 {
1192     MXFStreamContext *sc = st->priv_data;
1193     AVIOContext *pb = s->pb;
1194     int stored_width  = (st->codecpar->width +15)/16*16;
1195     int stored_height = (st->codecpar->height+15)/16*16;
1196     int display_height;
1197     int f1, f2;
1198     UID transfer_ul = {0};
1199     int64_t pos = mxf_write_generic_desc(s, st, key);
1200
1201     get_trc(transfer_ul, st->codecpar->color_trc);
1202
1203     mxf_write_local_tag(pb, 4, 0x3203);
1204     avio_wb32(pb, stored_width);
1205
1206     mxf_write_local_tag(pb, 4, 0x3202);
1207     avio_wb32(pb, stored_height>>sc->interlaced);
1208
1209     if (s->oformat == &ff_mxf_d10_muxer) {
1210         //Stored F2 Offset
1211         mxf_write_local_tag(pb, 4, 0x3216);
1212         avio_wb32(pb, 0);
1213
1214         //Image Start Offset
1215         mxf_write_local_tag(pb, 4, 0x3213);
1216         avio_wb32(pb, 0);
1217
1218         //Image End Offset
1219         mxf_write_local_tag(pb, 4, 0x3214);
1220         avio_wb32(pb, 0);
1221     }
1222
1223     //Sampled width
1224     mxf_write_local_tag(pb, 4, 0x3205);
1225     avio_wb32(pb, st->codecpar->width);
1226
1227     //Samples height
1228     mxf_write_local_tag(pb, 4, 0x3204);
1229     avio_wb32(pb, st->codecpar->height>>sc->interlaced);
1230
1231     //Sampled X Offset
1232     mxf_write_local_tag(pb, 4, 0x3206);
1233     avio_wb32(pb, 0);
1234
1235     //Sampled Y Offset
1236     mxf_write_local_tag(pb, 4, 0x3207);
1237     avio_wb32(pb, 0);
1238
1239     mxf_write_local_tag(pb, 4, 0x3209);
1240     avio_wb32(pb, st->codecpar->width);
1241
1242     if (st->codecpar->height == 608) // PAL + VBI
1243         display_height = 576;
1244     else if (st->codecpar->height == 512)  // NTSC + VBI
1245         display_height = 486;
1246     else
1247         display_height = st->codecpar->height;
1248
1249     mxf_write_local_tag(pb, 4, 0x3208);
1250     avio_wb32(pb, display_height>>sc->interlaced);
1251
1252     // display X offset
1253     mxf_write_local_tag(pb, 4, 0x320A);
1254     avio_wb32(pb, 0);
1255
1256     // display Y offset
1257     mxf_write_local_tag(pb, 4, 0x320B);
1258     avio_wb32(pb, (st->codecpar->height - display_height)>>sc->interlaced);
1259
1260     if (sc->interlaced) {
1261         //Display F2 Offset
1262         mxf_write_local_tag(pb, 4, 0x3217);
1263         avio_wb32(pb, -((st->codecpar->height - display_height)&1));
1264     }
1265
1266     // component depth
1267     mxf_write_local_tag(pb, 4, 0x3301);
1268     avio_wb32(pb, sc->component_depth);
1269
1270     // horizontal subsampling
1271     mxf_write_local_tag(pb, 4, 0x3302);
1272     avio_wb32(pb, sc->h_chroma_sub_sample);
1273
1274     // vertical subsampling
1275     mxf_write_local_tag(pb, 4, 0x3308);
1276     avio_wb32(pb, sc->v_chroma_sub_sample);
1277
1278     // color siting
1279     mxf_write_local_tag(pb, 1, 0x3303);
1280     avio_w8(pb, sc->color_siting);
1281
1282     // Padding Bits
1283     mxf_write_local_tag(pb, 2, 0x3307);
1284     avio_wb16(pb, 0);
1285
1286     if (st->codecpar->color_range != AVCOL_RANGE_UNSPECIFIED) {
1287         int black = 0,
1288             white = (1<<sc->component_depth) - 1,
1289             color = (1<<sc->component_depth) - 1;
1290         if (st->codecpar->color_range == AVCOL_RANGE_MPEG) {
1291             black = 1   << (sc->component_depth - 4);
1292             white = 235 << (sc->component_depth - 8);
1293             color = (14 << (sc->component_depth - 4)) + 1;
1294         }
1295         mxf_write_local_tag(pb, 4, 0x3304);
1296         avio_wb32(pb, black);
1297         mxf_write_local_tag(pb, 4, 0x3305);
1298         avio_wb32(pb, white);
1299         mxf_write_local_tag(pb, 4, 0x3306);
1300         avio_wb32(pb, color);
1301     }
1302
1303     if (sc->signal_standard) {
1304         mxf_write_local_tag(pb, 1, 0x3215);
1305         avio_w8(pb, sc->signal_standard);
1306     }
1307
1308     // frame layout
1309     mxf_write_local_tag(pb, 1, 0x320C);
1310     avio_w8(pb, sc->interlaced);
1311
1312     // video line map
1313     switch (st->codecpar->height) {
1314     case  576: f1 = 23; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
1315     case  608: f1 =  7; f2 = 320; break;
1316     case  480: f1 = 20; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
1317     case  512: f1 =  7; f2 = 270; break;
1318     case  720: f1 = 26; f2 =   0; break; // progressive
1319     case 1080: f1 = 21; f2 = 584; break;
1320     default:   f1 =  0; f2 =   0; break;
1321     }
1322
1323     if (!sc->interlaced && f2) {
1324         f2  = 0;
1325         f1 *= 2;
1326     }
1327
1328
1329     mxf_write_local_tag(pb, 16, 0x320D);
1330     avio_wb32(pb, 2);
1331     avio_wb32(pb, 4);
1332     avio_wb32(pb, f1);
1333     avio_wb32(pb, f2);
1334
1335     mxf_write_local_tag(pb, 8, 0x320E);
1336     avio_wb32(pb, sc->aspect_ratio.num);
1337     avio_wb32(pb, sc->aspect_ratio.den);
1338
1339     //Transfer characteristic
1340     if (transfer_ul[0]) {
1341         mxf_write_local_tag(pb, 16, 0x3210);
1342         avio_write(pb, transfer_ul, 16);
1343     };
1344
1345     mxf_write_local_tag(pb, 16, 0x3201);
1346     avio_write(pb, *sc->codec_ul, 16);
1347
1348     if (sc->interlaced && sc->field_dominance) {
1349         mxf_write_local_tag(pb, 1, 0x3212);
1350         avio_w8(pb, sc->field_dominance);
1351     }
1352
1353     if (st->codecpar->codec_id == AV_CODEC_ID_H264 && !sc->avc_intra) {
1354         // write avc sub descriptor ref
1355         mxf_write_local_tag(pb, 8 + 16, 0x8100);
1356         mxf_write_refs_count(pb, 1);
1357         mxf_write_uuid(pb, AVCSubDescriptor, 0);
1358     }
1359
1360     return pos;
1361 }
1362
1363 static void mxf_update_klv_size(AVIOContext *pb, int64_t pos)
1364 {
1365     int64_t cur_pos = avio_tell(pb);
1366     int size = cur_pos - pos;
1367     avio_seek(pb, pos - 4, SEEK_SET);
1368     klv_encode_ber4_length(pb, size);
1369     avio_seek(pb, cur_pos, SEEK_SET);
1370 }
1371
1372 static void mxf_write_avc_subdesc(AVFormatContext *s, AVStream *st)
1373 {
1374     AVIOContext *pb = s->pb;
1375     int64_t pos;
1376
1377     avio_write(pb, mxf_avc_subdescriptor_key, 16);
1378     klv_encode_ber4_length(pb, 0);
1379     pos = avio_tell(pb);
1380
1381     mxf_write_local_tag(pb, 16, 0x3C0A);
1382     mxf_write_uuid(pb, AVCSubDescriptor, 0);
1383
1384     mxf_write_local_tag(pb, 1, 0x8200);
1385     avio_w8(pb, 0xFF); // AVC Decoding Delay, unknown
1386
1387     mxf_write_local_tag(pb, 1, 0x8201);
1388     avio_w8(pb, st->codecpar->profile); // AVC Profile
1389
1390     mxf_write_local_tag(pb, 1, 0x8202);
1391     avio_w8(pb, st->codecpar->level); // AVC Level
1392
1393     mxf_update_klv_size(s->pb, pos);
1394 }
1395
1396 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
1397 {
1398     int64_t pos = mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key);
1399     mxf_update_klv_size(s->pb, pos);
1400
1401     if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
1402         mxf_write_avc_subdesc(s, st);
1403     }
1404 }
1405
1406 static void mxf_write_h264_desc(AVFormatContext *s, AVStream *st)
1407 {
1408     MXFStreamContext *sc = st->priv_data;
1409     if (sc->avc_intra) {
1410         mxf_write_mpegvideo_desc(s, st);
1411     } else {
1412         int64_t pos = mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key);
1413         mxf_update_klv_size(s->pb, pos);
1414         mxf_write_avc_subdesc(s, st);
1415     }
1416 }
1417
1418 static void mxf_write_s436m_anc_desc(AVFormatContext *s, AVStream *st)
1419 {
1420     int64_t pos = mxf_write_generic_desc(s, st, mxf_s436m_anc_descriptor_key);
1421     mxf_update_klv_size(s->pb, pos);
1422 }
1423
1424 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1425 {
1426     AVIOContext *pb = s->pb;
1427     MXFStreamContext *sc = st->priv_data;
1428     int profile_and_level = (st->codecpar->profile<<4) | st->codecpar->level;
1429     int64_t pos = mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key);
1430
1431     if (st->codecpar->codec_id != AV_CODEC_ID_H264) {
1432         // bit rate
1433         mxf_write_local_tag(pb, 4, 0x8000);
1434         avio_wb32(pb, sc->video_bit_rate);
1435
1436         // profile and level
1437         mxf_write_local_tag(pb, 1, 0x8007);
1438         if (!st->codecpar->profile)
1439             profile_and_level |= 0x80; // escape bit
1440         avio_w8(pb, profile_and_level);
1441
1442         // low delay
1443         mxf_write_local_tag(pb, 1, 0x8003);
1444         avio_w8(pb, sc->low_delay);
1445
1446         // closed gop
1447         mxf_write_local_tag(pb, 1, 0x8004);
1448         avio_w8(pb, sc->seq_closed_gop);
1449
1450         // max gop
1451         mxf_write_local_tag(pb, 2, 0x8006);
1452         avio_wb16(pb, sc->max_gop);
1453
1454         // b picture count
1455         mxf_write_local_tag(pb, 2, 0x8008);
1456         avio_wb16(pb, sc->b_picture_count);
1457     }
1458
1459     mxf_update_klv_size(pb, pos);
1460 }
1461
1462 static int64_t mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key)
1463 {
1464     AVIOContext *pb = s->pb;
1465     MXFContext *mxf = s->priv_data;
1466     int show_warnings = !mxf->footer_partition_offset;
1467     int64_t pos = mxf_write_generic_desc(s, st, key);
1468
1469     if (s->oformat == &ff_mxf_opatom_muxer) {
1470         mxf_write_local_tag(pb, 8, 0x3002);
1471         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
1472     }
1473
1474     // audio locked
1475     mxf_write_local_tag(pb, 1, 0x3D02);
1476     avio_w8(pb, 1);
1477
1478     // write audio sampling rate
1479     mxf_write_local_tag(pb, 8, 0x3D03);
1480     avio_wb32(pb, st->codecpar->sample_rate);
1481     avio_wb32(pb, 1);
1482
1483     if (s->oformat == &ff_mxf_d10_muxer) {
1484         mxf_write_local_tag(pb, 1, 0x3D04);
1485         avio_w8(pb, 0);
1486     }
1487
1488     mxf_write_local_tag(pb, 4, 0x3D07);
1489     if (mxf->channel_count == -1) {
1490         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codecpar->channels != 4) && (st->codecpar->channels != 8))
1491             av_log(s, AV_LOG_WARNING, "the number of audio channels shall be 4 or 8 : the output will not comply to MXF D-10 specs, use -d10_channelcount to fix this\n");
1492         avio_wb32(pb, st->codecpar->channels);
1493     } else if (s->oformat == &ff_mxf_d10_muxer) {
1494         if (show_warnings && (mxf->channel_count < st->codecpar->channels))
1495             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1496         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1497             av_log(s, AV_LOG_WARNING, "d10_channelcount shall be set to 4 or 8 : the output will not comply to MXF D-10 specs\n");
1498         avio_wb32(pb, mxf->channel_count);
1499     } else {
1500         avio_wb32(pb, st->codecpar->channels);
1501     }
1502
1503     mxf_write_local_tag(pb, 4, 0x3D01);
1504     avio_wb32(pb, av_get_bits_per_sample(st->codecpar->codec_id));
1505
1506     return pos;
1507 }
1508
1509 static int64_t mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key)
1510 {
1511     AVIOContext *pb = s->pb;
1512     int64_t pos = mxf_write_generic_sound_common(s, st, key);
1513
1514     mxf_write_local_tag(pb, 2, 0x3D0A);
1515     avio_wb16(pb, st->codecpar->block_align);
1516
1517     // avg bytes per sec
1518     mxf_write_local_tag(pb, 4, 0x3D09);
1519     avio_wb32(pb, st->codecpar->block_align*st->codecpar->sample_rate);
1520
1521     return pos;
1522 }
1523
1524 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1525 {
1526     int64_t pos = mxf_write_wav_common(s, st, mxf_wav_descriptor_key);
1527     mxf_update_klv_size(s->pb, pos);
1528 }
1529
1530 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1531 {
1532     int64_t pos = mxf_write_wav_common(s, st, mxf_aes3_descriptor_key);
1533     mxf_update_klv_size(s->pb, pos);
1534 }
1535
1536 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1537 {
1538     int64_t pos = mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key);
1539     mxf_update_klv_size(s->pb, pos);
1540 }
1541
1542 static const uint8_t mxf_indirect_value_utf16le[] = { 0x4c,0x00,0x02,0x10,0x01,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 };
1543
1544 static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)
1545 {
1546     MXFContext *mxf = s->priv_data;
1547     AVIOContext *pb = s->pb;
1548     int name_size = mxf_utf16_local_tag_length(name);
1549     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);
1550
1551     if (!name_size || indirect_value_size == 13)
1552         return 1;
1553
1554     mxf_write_metadata_key(pb, 0x013f00);
1555     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);
1556
1557     // write instance UID
1558     mxf_write_local_tag(pb, 16, 0x3C0A);
1559     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);
1560
1561     // write name
1562     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name
1563
1564     // write indirect value
1565     mxf_write_local_tag(pb, indirect_value_size, 0x5003);
1566     avio_write(pb, mxf_indirect_value_utf16le, 17);
1567     avio_put_str16le(pb, value);
1568
1569     mxf->tagged_value_count++;
1570     return 0;
1571 }
1572
1573 static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)
1574 {
1575     MXFContext *mxf = s->priv_data;
1576     AVDictionaryEntry *t = NULL;
1577     int count = 0;
1578
1579     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {
1580         if (mxf->tagged_value_count >= UINT16_MAX) {
1581             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");
1582             return count;
1583         }
1584
1585         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)
1586             count++;
1587     }
1588     return count;
1589 }
1590
1591 static void mxf_write_package(AVFormatContext *s, MXFPackage *package)
1592 {
1593     MXFContext *mxf = s->priv_data;
1594     AVIOContext *pb = s->pb;
1595     int i, track_count = s->nb_streams+1;
1596     int name_size = mxf_utf16_local_tag_length(package->name);
1597     int user_comment_count = 0;
1598
1599     if (package->type == MaterialPackage) {
1600         if (mxf->store_user_comments)
1601             user_comment_count = mxf_write_user_comments(s, s->metadata);
1602         mxf_write_metadata_key(pb, 0x013600);
1603         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1604         klv_encode_ber_length(pb, 92 + name_size + (16*track_count) + (16*user_comment_count) + 12LL*mxf->store_user_comments);
1605     } else {
1606         mxf_write_metadata_key(pb, 0x013700);
1607         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1608         klv_encode_ber_length(pb, 112 + name_size + (16*track_count) + 12LL*mxf->store_user_comments); // 20 bytes length for descriptor reference
1609     }
1610
1611     // write uid
1612     mxf_write_local_tag(pb, 16, 0x3C0A);
1613     mxf_write_uuid(pb, package->type, package->instance);
1614     av_log(s, AV_LOG_DEBUG, "package type:%d\n", package->type);
1615     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1616
1617     // write package umid
1618     mxf_write_local_tag(pb, 32, 0x4401);
1619     mxf_write_umid(s, package->instance);
1620     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1621
1622     // package name
1623     if (name_size)
1624         mxf_write_local_tag_utf16(pb, 0x4402, package->name);
1625
1626     // package creation date
1627     mxf_write_local_tag(pb, 8, 0x4405);
1628     avio_wb64(pb, mxf->timestamp);
1629
1630     // package modified date
1631     mxf_write_local_tag(pb, 8, 0x4404);
1632     avio_wb64(pb, mxf->timestamp);
1633
1634     // write track refs
1635     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
1636     mxf_write_refs_count(pb, track_count);
1637     // these are the uuids of the tracks the will be written in mxf_write_track
1638     for (i = 0; i < track_count; i++)
1639         mxf_write_uuid(pb, Track,  mxf->track_instance_count + i);
1640
1641     // write user comment refs
1642     if (mxf->store_user_comments) {
1643         mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);
1644         mxf_write_refs_count(pb, user_comment_count);
1645         for (i = 0; i < user_comment_count; i++)
1646             mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);
1647     }
1648
1649     // write multiple descriptor reference
1650     if (package->type == SourcePackage && package->instance == 1) {
1651         mxf_write_local_tag(pb, 16, 0x4701);
1652         if (s->nb_streams > 1) {
1653             mxf_write_uuid(pb, MultipleDescriptor, 0);
1654             mxf_write_multi_descriptor(s);
1655         } else
1656             mxf_write_uuid(pb, SubDescriptor, 0);
1657     } else if (package->type == SourcePackage && package->instance == 2) {
1658         mxf_write_local_tag(pb, 16, 0x4701);
1659         mxf_write_uuid(pb, TapeDescriptor, 0);
1660         mxf_write_tape_descriptor(s);
1661     }
1662
1663     /*
1664      * for every 1 track in a package there is 1 sequence and 1 component.
1665      * all 3 of these elements share the same instance number for generating
1666      * there instance uuids. mxf->track_instance_count stores this value.
1667      * mxf->track_instance_count is incremented after a group of all 3 of
1668      * these elements are written.
1669      */
1670
1671     // write timecode track
1672     mxf_write_track(s, mxf->timecode_track, package);
1673     mxf_write_sequence(s, mxf->timecode_track, package);
1674     mxf_write_timecode_component(s, mxf->timecode_track, package);
1675     mxf->track_instance_count++;
1676
1677     for (i = 0; i < s->nb_streams; i++) {
1678         AVStream *st = s->streams[i];
1679         mxf_write_track(s, st, package);
1680         mxf_write_sequence(s, st, package);
1681         mxf_write_structural_component(s, st, package);
1682         mxf->track_instance_count++;
1683
1684         if (package->type == SourcePackage && package->instance == 1) {
1685             MXFStreamContext *sc = st->priv_data;
1686             mxf_essence_container_uls[sc->index].write_desc(s, st);
1687         }
1688     }
1689 }
1690
1691 static int mxf_write_essence_container_data(AVFormatContext *s)
1692 {
1693     AVIOContext *pb = s->pb;
1694
1695     mxf_write_metadata_key(pb, 0x012300);
1696     klv_encode_ber_length(pb, 72);
1697
1698     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1699     mxf_write_uuid(pb, EssenceContainerData, 0);
1700
1701     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1702     mxf_write_umid(s, 1);
1703
1704     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1705     avio_wb32(pb, 1);
1706
1707     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1708     avio_wb32(pb, 2);
1709
1710     return 0;
1711 }
1712
1713 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1714 {
1715     MXFContext *mxf = s->priv_data;
1716     AVDictionaryEntry *entry = NULL;
1717     AVStream *st = NULL;
1718     int i;
1719     MXFPackage packages[3] = {{0}};
1720     int package_count = 2;
1721     packages[0].type = MaterialPackage;
1722     packages[1].type = SourcePackage;
1723     packages[1].instance = 1;
1724     packages[0].ref = &packages[1];
1725
1726
1727     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
1728        packages[0].name = entry->value;
1729
1730     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
1731         packages[1].name = entry->value;
1732     } else {
1733         /* check if any of the streams contain a file_package_name */
1734         for (i = 0; i < s->nb_streams; i++) {
1735             st = s->streams[i];
1736             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
1737                 packages[1].name = entry->value;
1738                 break;
1739             }
1740         }
1741     }
1742
1743     entry = av_dict_get(s->metadata, "reel_name", NULL, 0);
1744     if (entry) {
1745         packages[2].name = entry->value;
1746         packages[2].type = SourcePackage;
1747         packages[2].instance = 2;
1748         packages[1].ref = &packages[2];
1749         package_count = 3;
1750     }
1751
1752     mxf_write_preface(s);
1753     mxf_write_identification(s);
1754     mxf_write_content_storage(s, packages, package_count);
1755     mxf->track_instance_count = 0;
1756     for (i = 0; i < package_count; i++)
1757         mxf_write_package(s, &packages[i]);
1758     mxf_write_essence_container_data(s);
1759     return 0;
1760 }
1761
1762 static unsigned klv_fill_size(uint64_t size)
1763 {
1764     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1765     if (pad < 20) // smallest fill item possible
1766         return pad + KAG_SIZE;
1767     else
1768         return pad & (KAG_SIZE-1);
1769 }
1770
1771 static void mxf_write_index_table_segment(AVFormatContext *s)
1772 {
1773     MXFContext *mxf = s->priv_data;
1774     AVIOContext *pb = s->pb;
1775     int i, j, temporal_reordering = 0;
1776     int key_index = mxf->last_key_index;
1777     int prev_non_b_picture = 0;
1778     int audio_frame_size = 0;
1779     int64_t pos;
1780
1781     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1782
1783     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1784         return;
1785
1786     avio_write(pb, index_table_segment_key, 16);
1787
1788     klv_encode_ber4_length(pb, 0);
1789     pos = avio_tell(pb);
1790
1791     // instance id
1792     mxf_write_local_tag(pb, 16, 0x3C0A);
1793     mxf_write_uuid(pb, IndexTableSegment, 0);
1794
1795     // index edit rate
1796     mxf_write_local_tag(pb, 8, 0x3F0B);
1797     avio_wb32(pb, mxf->time_base.den);
1798     avio_wb32(pb, mxf->time_base.num);
1799
1800     // index start position
1801     mxf_write_local_tag(pb, 8, 0x3F0C);
1802     avio_wb64(pb, mxf->last_indexed_edit_unit);
1803
1804     // index duration
1805     mxf_write_local_tag(pb, 8, 0x3F0D);
1806     if (mxf->edit_unit_byte_count)
1807         avio_wb64(pb, 0); // index table covers whole container
1808     else
1809         avio_wb64(pb, mxf->edit_units_count);
1810
1811     // edit unit byte count
1812     mxf_write_local_tag(pb, 4, 0x3F05);
1813     avio_wb32(pb, mxf->edit_unit_byte_count);
1814
1815     // index sid
1816     mxf_write_local_tag(pb, 4, 0x3F06);
1817     avio_wb32(pb, 2);
1818
1819     // body sid
1820     mxf_write_local_tag(pb, 4, 0x3F07);
1821     avio_wb32(pb, 1);
1822
1823     // real slice count - 1
1824     mxf_write_local_tag(pb, 1, 0x3F08);
1825     avio_w8(pb, !mxf->edit_unit_byte_count); // only one slice for CBR
1826
1827     // delta entry array
1828     mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1829     avio_wb32(pb, s->nb_streams+1); // num of entries
1830     avio_wb32(pb, 6);               // size of one entry
1831     // write system item delta entry
1832     avio_w8(pb, 0);
1833     avio_w8(pb, 0); // slice entry
1834     avio_wb32(pb, 0); // element delta
1835     // write each stream delta entry
1836     for (i = 0; i < s->nb_streams; i++) {
1837         AVStream *st = s->streams[i];
1838         MXFStreamContext *sc = st->priv_data;
1839         avio_w8(pb, sc->temporal_reordering);
1840         if (sc->temporal_reordering)
1841             temporal_reordering = 1;
1842         if (mxf->edit_unit_byte_count) {
1843             avio_w8(pb, 0); // slice number
1844             avio_wb32(pb, sc->slice_offset);
1845         } else if (i == 0) { // video track
1846             avio_w8(pb, 0); // slice number
1847             avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1848         } else { // audio or data track
1849             if (!audio_frame_size) {
1850                 audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1851                 audio_frame_size += klv_fill_size(audio_frame_size);
1852             }
1853             avio_w8(pb, 1);
1854             avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1855         }
1856     }
1857
1858     if (!mxf->edit_unit_byte_count) {
1859         MXFStreamContext *sc = s->streams[0]->priv_data;
1860         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*15, 0x3F0A);
1861         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1862         avio_wb32(pb, 15);  // size of one entry
1863
1864         for (i = 0; i < mxf->edit_units_count; i++) {
1865             int temporal_offset = 0;
1866
1867             if (!(mxf->index_entries[i].flags & 0x33)) { // I-frame
1868                 sc->max_gop = FFMAX(sc->max_gop, i - mxf->last_key_index);
1869                 mxf->last_key_index = key_index;
1870                 key_index = i;
1871             }
1872
1873             if (temporal_reordering) {
1874                 int pic_num_in_gop = i - key_index;
1875                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1876                     for (j = key_index; j < mxf->edit_units_count; j++) {
1877                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1878                             break;
1879                     }
1880                     if (j == mxf->edit_units_count)
1881                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1882                     temporal_offset = j - key_index - pic_num_in_gop;
1883                 }
1884             }
1885             avio_w8(pb, temporal_offset);
1886
1887             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1888                 sc->b_picture_count = FFMAX(sc->b_picture_count, i - prev_non_b_picture);
1889                 avio_w8(pb, mxf->last_key_index - i);
1890             } else {
1891                 avio_w8(pb, key_index - i); // key frame offset
1892                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1893                     mxf->last_key_index = key_index;
1894                 prev_non_b_picture = i;
1895             }
1896
1897             if (!(mxf->index_entries[i].flags & 0x33) && // I-frame
1898                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1899                 mxf->index_entries[i].flags |= 0x80; // random access
1900             avio_w8(pb, mxf->index_entries[i].flags);
1901             // stream offset
1902             avio_wb64(pb, mxf->index_entries[i].offset);
1903             if (s->nb_streams > 1)
1904                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1905             else
1906                 avio_wb32(pb, 0);
1907         }
1908
1909         mxf->last_key_index = key_index - mxf->edit_units_count;
1910         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1911         mxf->edit_units_count = 0;
1912     }
1913
1914     mxf_update_klv_size(pb, pos);
1915 }
1916
1917 static void mxf_write_klv_fill(AVFormatContext *s)
1918 {
1919     unsigned pad = klv_fill_size(avio_tell(s->pb));
1920     if (pad) {
1921         avio_write(s->pb, klv_fill_key, 16);
1922         pad -= 16 + 4;
1923         klv_encode_ber4_length(s->pb, pad);
1924         ffio_fill(s->pb, 0, pad);
1925         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1926     }
1927 }
1928
1929 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1930                                 int indexsid,
1931                                 const uint8_t *key, int write_metadata)
1932 {
1933     MXFContext *mxf = s->priv_data;
1934     AVIOContext *pb = s->pb;
1935     int64_t header_byte_count_offset;
1936     unsigned index_byte_count = 0;
1937     uint64_t partition_offset = avio_tell(pb);
1938     int err;
1939
1940     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1941         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1942             12+mxf->edit_units_count*15;
1943     else if (mxf->edit_unit_byte_count && indexsid)
1944         index_byte_count = 80;
1945
1946     if (index_byte_count) {
1947         // add encoded ber length
1948         index_byte_count += 16 + klv_ber_length(index_byte_count);
1949         index_byte_count += klv_fill_size(index_byte_count);
1950     }
1951
1952     if (key && !memcmp(key, body_partition_key, 16)) {
1953         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1954                                      sizeof(*mxf->body_partition_offset))) < 0) {
1955             mxf->body_partitions_count = 0;
1956             return err;
1957         }
1958         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1959     }
1960
1961     // write klv
1962     if (key)
1963         avio_write(pb, key, 16);
1964     else
1965         avio_write(pb, body_partition_key, 16);
1966
1967     klv_encode_ber4_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1968
1969     // write partition value
1970     avio_wb16(pb, 1); // majorVersion
1971     avio_wb16(pb, 3); // minorVersion
1972     avio_wb32(pb, KAG_SIZE); // KAGSize
1973
1974     avio_wb64(pb, partition_offset); // ThisPartition
1975
1976     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1977         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1978     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1979         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1980     else
1981         avio_wb64(pb, 0);
1982
1983     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1984
1985     // set offset
1986     header_byte_count_offset = avio_tell(pb);
1987     avio_wb64(pb, 0); // headerByteCount, update later
1988
1989     // indexTable
1990     avio_wb64(pb, index_byte_count); // indexByteCount
1991     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1992
1993     // BodyOffset
1994     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
1995         avio_wb64(pb, mxf->body_offset);
1996     else
1997         avio_wb64(pb, 0);
1998
1999     avio_wb32(pb, bodysid); // bodySID
2000
2001     // operational pattern
2002     if (s->oformat == &ff_mxf_opatom_muxer)
2003         avio_write(pb, opatom_ul, 16);
2004     else
2005         avio_write(pb, op1a_ul, 16);
2006
2007     // essence container
2008     mxf_write_essence_container_refs(s);
2009
2010     if (write_metadata) {
2011         // mark the start of the headermetadata and calculate metadata size
2012         int64_t pos, start;
2013         unsigned header_byte_count;
2014
2015         mxf_write_klv_fill(s);
2016         start = avio_tell(s->pb);
2017         mxf_write_primer_pack(s);
2018         mxf_write_klv_fill(s);
2019         mxf_write_header_metadata_sets(s);
2020         pos = avio_tell(s->pb);
2021         header_byte_count = pos - start + klv_fill_size(pos);
2022
2023         // update header_byte_count
2024         avio_seek(pb, header_byte_count_offset, SEEK_SET);
2025         avio_wb64(pb, header_byte_count);
2026         avio_seek(pb, pos, SEEK_SET);
2027     }
2028
2029     if(key)
2030         avio_flush(pb);
2031
2032     return 0;
2033 }
2034
2035 static const struct {
2036     int profile;
2037     UID codec_ul;
2038 } mxf_prores_codec_uls[] = {
2039     { FF_PROFILE_PRORES_PROXY,    { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x01,0x00 } },
2040     { FF_PROFILE_PRORES_LT,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x02,0x00 } },
2041     { FF_PROFILE_PRORES_STANDARD, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x03,0x00 } },
2042     { FF_PROFILE_PRORES_HQ,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x04,0x00 } },
2043     { FF_PROFILE_PRORES_4444,     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x05,0x00 } },
2044     { FF_PROFILE_PRORES_XQ,       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x03,0x06,0x06,0x00 } },
2045 };
2046
2047 static int mxf_parse_prores_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2048 {
2049     MXFContext *mxf = s->priv_data;
2050     MXFStreamContext *sc = st->priv_data;
2051     int i, profile;
2052
2053     if (mxf->header_written)
2054         return 1;
2055
2056     sc->codec_ul = NULL;
2057     profile = st->codecpar->profile;
2058     for (i = 0; i < FF_ARRAY_ELEMS(mxf_prores_codec_uls); i++) {
2059         if (profile == mxf_prores_codec_uls[i].profile) {
2060             sc->codec_ul = &mxf_prores_codec_uls[i].codec_ul;
2061             break;
2062         }
2063     }
2064     if (!sc->codec_ul)
2065         return 0;
2066
2067     sc->frame_size = pkt->size;
2068
2069     return 1;
2070 }
2071
2072 static const struct {
2073     int cid;
2074     UID codec_ul;
2075 } mxf_dnxhd_codec_uls[] = {
2076     { 1235, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 } }, // 1080p 10bit HIGH
2077     { 1237, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 } }, // 1080p 8bit MED
2078     { 1238, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 } }, // 1080p 8bit HIGH
2079     { 1241, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 } }, // 1080i 10bit HIGH
2080     { 1242, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 } }, // 1080i 8bit MED
2081     { 1243, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 } }, // 1080i 8bit HIGH
2082     { 1244, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x0a,0x00,0x00 } }, // 1080i 8bit TR
2083     { 1250, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 } }, // 720p 10bit
2084     { 1251, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 } }, // 720p 8bit HIGH
2085     { 1252, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 } }, // 720p 8bit MED
2086     { 1253, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 } }, // 720p 8bit LOW
2087     { 1256, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x16,0x00,0x00 } }, // 1080p 10bit 444
2088     { 1258, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x18,0x00,0x00 } }, // 720p 8bit TR
2089     { 1259, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x19,0x00,0x00 } }, // 1080p 8bit TR
2090     { 1260, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x1a,0x00,0x00 } }, // 1080i 8bit TR MBAFF
2091     { 1270, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x24,0x00,0x00 } }, // DNXHR 444
2092     { 1271, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x25,0x00,0x00 } }, // DNXHR HQX
2093     { 1272, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x26,0x00,0x00 } }, // DNXHR HQ
2094     { 1273, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x27,0x00,0x00 } }, // DNXHR SQ
2095     { 1274, { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x71,0x28,0x00,0x00 } }, // DNXHR LB
2096 };
2097
2098 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2099 {
2100     MXFContext *mxf = s->priv_data;
2101     MXFStreamContext *sc = st->priv_data;
2102     int i, cid, frame_size = 0;
2103
2104     if (mxf->header_written)
2105         return 1;
2106
2107     if (pkt->size < 43)
2108         return 0;
2109
2110     sc->codec_ul = NULL;
2111     cid = AV_RB32(pkt->data + 0x28);
2112     for (i = 0; i < FF_ARRAY_ELEMS(mxf_dnxhd_codec_uls); i++) {
2113         if (cid == mxf_dnxhd_codec_uls[i].cid) {
2114             sc->codec_ul = &mxf_dnxhd_codec_uls[i].codec_ul;
2115             break;
2116         }
2117     }
2118     if (!sc->codec_ul)
2119         return 0;
2120
2121     sc->component_depth = 0;
2122     switch (pkt->data[0x21] >> 5) {
2123     case 1: sc->component_depth = 8; break;
2124     case 2: sc->component_depth = 10; break;
2125     case 3: sc->component_depth = 12; break;
2126     }
2127     if (!sc->component_depth)
2128         return 0;
2129
2130     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) == DNXHD_VARIABLE) {
2131         frame_size = avpriv_dnxhd_get_hr_frame_size(cid, st->codecpar->width, st->codecpar->height);
2132     }
2133     if (frame_size < 0)
2134         return 0;
2135
2136     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)
2137         return 0;
2138
2139     if (cid >= 1270) { // RI raster
2140         av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2141                   st->codecpar->width, st->codecpar->height,
2142                   INT_MAX);
2143     } else {
2144         sc->aspect_ratio = (AVRational){ 16, 9 };
2145     }
2146
2147     sc->frame_size = pkt->size;
2148
2149     return 1;
2150 }
2151
2152 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2153 {
2154     MXFContext *mxf = s->priv_data;
2155     MXFStreamContext *sc = st->priv_data;
2156     uint8_t *vs_pack, *vsc_pack;
2157     int ul_index, stype, pal;
2158     const AVDVProfile *profile;
2159
2160     if (mxf->header_written)
2161         return 1;
2162
2163     // Check for minimal frame size
2164     if (pkt->size < 120000)
2165         return -1;
2166
2167     profile = av_dv_frame_profile(NULL, pkt->data, pkt->size);
2168
2169     vs_pack  = pkt->data + 80*5 + 48;
2170     vsc_pack = pkt->data + 80*5 + 53;
2171     stype    = vs_pack[3] & 0x1f;
2172     pal      = (vs_pack[3] >> 5) & 0x1;
2173
2174     if ((vsc_pack[2] & 0x07) == 0x02) {
2175         sc->aspect_ratio = (AVRational){ 16, 9 };
2176     } else {
2177         sc->aspect_ratio = (AVRational){ 4, 3 };
2178     }
2179
2180     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
2181     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
2182     // and set field dominance accordingly
2183     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
2184
2185     switch (stype) {
2186     case 0x18: // DV100 720p
2187         ul_index = INDEX_DV100_720_50 + pal;
2188         if (sc->interlaced) {
2189             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
2190             sc->interlaced = 0;
2191         }
2192         break;
2193     case 0x14: // DV100 1080i
2194         ul_index = INDEX_DV100_1080_50 + pal;
2195         break;
2196     case 0x04: // DV50
2197         ul_index = INDEX_DV50_525_60 + pal;
2198         break;
2199     default: // DV25
2200         if (profile && profile->pix_fmt == AV_PIX_FMT_YUV420P && pal) {
2201             ul_index = INDEX_DV25_525_60_IEC + pal;
2202             break;
2203         }
2204         ul_index = INDEX_DV25_525_60 + pal;
2205     }
2206
2207     sc->index = ul_index;
2208     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
2209     sc->frame_size = pkt->size;
2210
2211     return 1;
2212 }
2213
2214 static const struct {
2215     UID uid;
2216     int frame_size;
2217     int profile;
2218     uint8_t interlaced;
2219     int intra_only; // 1 or 0 when there are separate UIDs for Long GOP and Intra, -1 when Intra/LGOP detection can be ignored
2220 } mxf_h264_codec_uls[] = {
2221     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x11,0x01 },      0,  66, 0, -1 }, // AVC Baseline
2222     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x20,0x01 },      0,  77, 0, -1 }, // AVC Main
2223     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x30,0x01 },      0,  88, 0, -1 }, // AVC Extended
2224     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x40,0x01 },      0, 100, 0, -1 }, // AVC High
2225     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x50,0x01 },      0, 110, 0,  0 }, // AVC High 10
2226     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x60,0x01 },      0, 122, 0,  0 }, // AVC High 422
2227     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x70,0x01 },      0, 244, 0,  0 }, // AVC High 444
2228     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0,  1 }, // AVC High 10 Intra
2229     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960, 110, 1,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/59.94i
2230     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088, 110, 1,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/50i
2231     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/29.97p
2232     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 1080/25p
2233     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 720/59.94p
2234     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800, 110, 0,  1 }, // AVC High 10 Intra RP2027 Class 50 720/50p
2235     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0,  1 }, // AVC High 422 Intra
2236     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576, 122, 1,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/59.94i
2237     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832, 122, 1,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/50i
2238     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/29.97p
2239     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 1080/25p
2240     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 720/59.94p
2241     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672, 122, 0,  1 }, // AVC High 422 Intra RP2027 Class 100 720/50p
2242     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x01,0x32,0x40,0x01 },      0, 244, 0,  1 }, // AVC High 444 Intra
2243     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0d,0x04,0x01,0x02,0x02,0x01,0x32,0x50,0x01 },      0,  44, 0, -1 }, // AVC CAVLC 444
2244 };
2245
2246 static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
2247                                 AVPacket *pkt, MXFIndexEntry *e)
2248 {
2249     MXFContext *mxf = s->priv_data;
2250     MXFStreamContext *sc = st->priv_data;
2251     H264SequenceParameterSet *sps = NULL;
2252     GetBitContext gb;
2253     const uint8_t *buf = pkt->data;
2254     const uint8_t *buf_end = pkt->data + pkt->size;
2255     const uint8_t *nal_end;
2256     uint32_t state = -1;
2257     int extra_size = 512; // support AVC Intra files without SPS/PPS header
2258     int i, frame_size, slice_type, intra_only = 0;
2259
2260     for (;;) {
2261         buf = avpriv_find_start_code(buf, buf_end, &state);
2262         if (buf >= buf_end)
2263             break;
2264
2265         switch (state & 0x1f) {
2266         case H264_NAL_SPS:
2267             e->flags |= 0x40;
2268
2269             if (mxf->header_written)
2270                 break;
2271
2272             nal_end = ff_avc_find_startcode(buf, buf_end);
2273             sps = ff_avc_decode_sps(buf, nal_end - buf);
2274             if (!sps) {
2275                 av_log(s, AV_LOG_ERROR, "error parsing sps\n");
2276                 return 0;
2277             }
2278
2279             sc->aspect_ratio.num = st->codecpar->width * sps->sar.num;
2280             sc->aspect_ratio.den = st->codecpar->height * sps->sar.den;
2281             av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2282                       sc->aspect_ratio.num, sc->aspect_ratio.den, 1024*1024);
2283             intra_only = (sps->constraint_set_flags >> 3) & 1;
2284             sc->interlaced = !sps->frame_mbs_only_flag;
2285             sc->component_depth = sps->bit_depth_luma;
2286
2287             buf = nal_end;
2288             break;
2289         case H264_NAL_PPS:
2290             if (e->flags & 0x40) { // sequence header present
2291                 e->flags |= 0x80; // random access
2292                 extra_size = 0;
2293             }
2294             break;
2295         case H264_NAL_IDR_SLICE:
2296             e->flags |= 0x04; // IDR Picture
2297             buf = buf_end;
2298             break;
2299         case H264_NAL_SLICE:
2300             init_get_bits8(&gb, buf, buf_end - buf);
2301             get_ue_golomb_long(&gb); // skip first_mb_in_slice
2302             slice_type = get_ue_golomb_31(&gb);
2303             switch (slice_type % 5) {
2304             case 0:
2305                 e->flags |= 0x20; // P Picture
2306                 e->flags |= 0x06; // P Picture
2307                 break;
2308             case 1:
2309                 e->flags |= 0x30; // B Picture
2310                 e->flags |= 0x03; // non-referenced B Picture
2311                 break;
2312             }
2313             buf = buf_end;
2314             break;
2315         default:
2316             break;
2317         }
2318     }
2319
2320     if (mxf->header_written)
2321         return 1;
2322
2323     if (!sps)
2324         sc->interlaced = st->codecpar->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;
2325     sc->codec_ul = NULL;
2326     frame_size = pkt->size + extra_size;
2327
2328     for (i = 0; i < FF_ARRAY_ELEMS(mxf_h264_codec_uls); i++) {
2329         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {
2330             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
2331             sc->component_depth = 10; // AVC Intra is always 10 Bit
2332             sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD
2333             st->codecpar->profile = mxf_h264_codec_uls[i].profile;
2334             sc->avc_intra = 1;
2335             mxf->cbr_index = 1;
2336             sc->frame_size = pkt->size;
2337             if (sc->interlaced)
2338                 sc->field_dominance = 1; // top field first is mandatory for AVC Intra
2339             break;
2340         } else if (sps && mxf_h264_codec_uls[i].frame_size == 0 &&
2341                    mxf_h264_codec_uls[i].profile == sps->profile_idc &&
2342                    (mxf_h264_codec_uls[i].intra_only < 0 ||
2343                     mxf_h264_codec_uls[i].intra_only == intra_only)) {
2344             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
2345             st->codecpar->profile = sps->profile_idc;
2346             st->codecpar->level = sps->level_idc;
2347             // continue to check for avc intra
2348         }
2349     }
2350
2351     av_free(sps);
2352
2353     if (!sc->codec_ul) {
2354         av_log(s, AV_LOG_ERROR, "h264 profile not supported\n");
2355         return 0;
2356     }
2357
2358     return 1;
2359 }
2360
2361 static const UID mxf_mpeg2_codec_uls[] = {
2362     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
2363     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
2364     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
2365     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
2366     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
2367     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
2368     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
2369     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
2370     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
2371     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
2372 };
2373
2374 static const UID *mxf_get_mpeg2_codec_ul(AVCodecParameters *par)
2375 {
2376     int long_gop = 1;
2377
2378     if (par->profile == 4) { // Main
2379         if (par->level == 8) // Main
2380             return &mxf_mpeg2_codec_uls[0+long_gop];
2381         else if (par->level == 4) // High
2382             return &mxf_mpeg2_codec_uls[4+long_gop];
2383         else if (par->level == 6) // High 14
2384             return &mxf_mpeg2_codec_uls[8+long_gop];
2385     } else if (par->profile == 0) { // 422
2386         if (par->level == 5) // Main
2387             return &mxf_mpeg2_codec_uls[2+long_gop];
2388         else if (par->level == 2) // High
2389             return &mxf_mpeg2_codec_uls[6+long_gop];
2390     }
2391     return NULL;
2392 }
2393
2394 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
2395                                  AVPacket *pkt, MXFIndexEntry *e)
2396 {
2397     MXFStreamContext *sc = st->priv_data;
2398     uint32_t c = -1;
2399     int i;
2400
2401     for(i = 0; i < pkt->size - 4; i++) {
2402         c = (c<<8) + pkt->data[i];
2403         if (c == 0x1b5) {
2404             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
2405                 st->codecpar->profile = pkt->data[i+1] & 0x07;
2406                 st->codecpar->level   = pkt->data[i+2] >> 4;
2407                 sc->low_delay = pkt->data[i+6] >> 7;
2408             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
2409                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
2410                 if (sc->interlaced)
2411                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
2412                 break;
2413             }
2414         } else if (c == 0x1b8) { // gop
2415             if (pkt->data[i+4]>>6 & 0x01) { // closed
2416                 if (sc->seq_closed_gop == -1)
2417                     sc->seq_closed_gop = 1;
2418                 sc->closed_gop = 1;
2419                 if (e->flags & 0x40) // sequence header present
2420                     e->flags |= 0x80; // random access
2421             } else {
2422                 sc->seq_closed_gop = 0;
2423                 sc->closed_gop = 0;
2424             }
2425         } else if (c == 0x1b3) { // seq
2426             e->flags |= 0x40;
2427             switch ((pkt->data[i+4]>>4) & 0xf) {
2428             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
2429             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
2430             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
2431             default:
2432                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
2433                           st->codecpar->width, st->codecpar->height, 1024*1024);
2434             }
2435         } else if (c == 0x100) { // pic
2436             int pict_type = (pkt->data[i+2]>>3) & 0x07;
2437             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
2438             if (pict_type == 2) { // P-frame
2439                 e->flags |= 0x22;
2440                 sc->closed_gop = 0; // reset closed GOP, don't matter anymore
2441             } else if (pict_type == 3) { // B-frame
2442                 if (sc->closed_gop)
2443                     e->flags |= 0x13; // only backward prediction
2444                 else
2445                     e->flags |= 0x33;
2446                 sc->temporal_reordering = -1;
2447             } else if (!pict_type) {
2448                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
2449                 return 0;
2450             }
2451         }
2452     }
2453     if (s->oformat != &ff_mxf_d10_muxer)
2454         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codecpar);
2455     return !!sc->codec_ul;
2456 }
2457
2458 static uint64_t mxf_parse_timestamp(int64_t timestamp64)
2459 {
2460     time_t timestamp = timestamp64 / 1000000;
2461     struct tm tmbuf;
2462     struct tm *time = gmtime_r(&timestamp, &tmbuf);
2463     if (!time)
2464         return 0;
2465     return (uint64_t)(time->tm_year+1900) << 48 |
2466            (uint64_t)(time->tm_mon+1)     << 40 |
2467            (uint64_t) time->tm_mday       << 32 |
2468                       time->tm_hour       << 24 |
2469                       time->tm_min        << 16 |
2470                       time->tm_sec        << 8  |
2471                       (timestamp64 % 1000000) / 4000;
2472 }
2473
2474 static void mxf_gen_umid(AVFormatContext *s)
2475 {
2476     MXFContext *mxf = s->priv_data;
2477     uint32_t seed = av_get_random_seed();
2478     uint64_t umid = seed + 0x5294713400000000LL;
2479
2480     AV_WB64(mxf->umid  , umid);
2481     AV_WB64(mxf->umid+8, umid>>8);
2482
2483     mxf->instance_number = seed & 0xFFFFFF;
2484 }
2485
2486 static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)
2487 {
2488     MXFContext *mxf = s->priv_data;
2489     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
2490     if (!tcr)
2491         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2492
2493     if (tcr)
2494         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
2495     else
2496         return av_timecode_init(&mxf->tc, rate, 0, 0, s);
2497 }
2498
2499 static int mxf_write_header(AVFormatContext *s)
2500 {
2501     MXFContext *mxf = s->priv_data;
2502     int i, ret;
2503     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
2504     const MXFSamplesPerFrame *spf = NULL;
2505     int64_t timestamp = 0;
2506
2507     if (!s->nb_streams)
2508         return -1;
2509
2510     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1) {
2511         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
2512         return -1;
2513     }
2514
2515     if (!av_dict_get(s->metadata, "comment_", NULL, AV_DICT_IGNORE_SUFFIX))
2516         mxf->store_user_comments = 0;
2517
2518     for (i = 0; i < s->nb_streams; i++) {
2519         AVStream *st = s->streams[i];
2520         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
2521         if (!sc)
2522             return AVERROR(ENOMEM);
2523         st->priv_data = sc;
2524
2525         if (((i == 0) ^ (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
2526             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
2527             return -1;
2528         }
2529
2530         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2531             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codecpar->format);
2532             // TODO: should be avg_frame_rate
2533             AVRational rate, tbc = st->time_base;
2534             // Default component depth to 8
2535             sc->component_depth = 8;
2536             sc->h_chroma_sub_sample = 2;
2537             sc->v_chroma_sub_sample = 2;
2538             sc->color_siting = 0xFF;
2539
2540             if (st->codecpar->sample_aspect_ratio.num && st->codecpar->sample_aspect_ratio.den) {
2541                 sc->aspect_ratio = av_mul_q(st->codecpar->sample_aspect_ratio,
2542                                             av_make_q(st->codecpar->width, st->codecpar->height));
2543             }
2544
2545             if (pix_desc) {
2546                 sc->component_depth     = pix_desc->comp[0].depth;
2547                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
2548                 sc->v_chroma_sub_sample = 1 << pix_desc->log2_chroma_h;
2549             }
2550             switch (ff_choose_chroma_location(s, st)) {
2551             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;
2552             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;
2553             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;
2554             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;
2555             }
2556
2557             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2558             spf = ff_mxf_get_samples_per_frame(s, tbc);
2559             if (!spf) {
2560                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
2561                        tbc.den, tbc.num);
2562                 return AVERROR(EINVAL);
2563             }
2564             mxf->content_package_rate = ff_mxf_get_content_package_rate(tbc);
2565             mxf->time_base = spf->time_base;
2566             rate = av_inv_q(mxf->time_base);
2567             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
2568             if((ret = mxf_init_timecode(s, st, rate)) < 0)
2569                 return ret;
2570
2571             if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2572                 sc->seq_closed_gop = -1; // unknown yet
2573             }
2574
2575             sc->video_bit_rate = st->codecpar->bit_rate;
2576
2577             if (s->oformat == &ff_mxf_d10_muxer ||
2578                 st->codecpar->codec_id == AV_CODEC_ID_DNXHD ||
2579                 st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO)
2580                 mxf->cbr_index = 1;
2581
2582             if (s->oformat == &ff_mxf_d10_muxer) {
2583                 if (st->codecpar->codec_id != AV_CODEC_ID_MPEG2VIDEO) {
2584                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support MPEG-2 Video\n");
2585                     return AVERROR(EINVAL);
2586                 }
2587                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {
2588                     sc->index = INDEX_D10_625_50_50_VIDEO;
2589                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && (mxf->time_base.den != 25)) {
2590                     sc->index = INDEX_D10_525_60_50_VIDEO;
2591                 } else if (sc->video_bit_rate == 40000000) {
2592                     if (mxf->time_base.den == 25) sc->index = INDEX_D10_625_50_40_VIDEO;
2593                     else                          sc->index = INDEX_D10_525_60_40_VIDEO;
2594                 } else if (sc->video_bit_rate == 30000000) {
2595                     if (mxf->time_base.den == 25) sc->index = INDEX_D10_625_50_30_VIDEO;
2596                     else                          sc->index = INDEX_D10_525_60_30_VIDEO;
2597                 } else {
2598                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
2599                     return -1;
2600                 }
2601
2602                 sc->signal_standard = 1;
2603                 sc->color_siting = 0;
2604                 sc->frame_size = (int64_t)sc->video_bit_rate *
2605                     mxf->time_base.num / (8*mxf->time_base.den);
2606             }
2607             if (mxf->signal_standard >= 0)
2608                 sc->signal_standard = mxf->signal_standard;
2609         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2610             if (st->codecpar->sample_rate != 48000) {
2611                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
2612                 return -1;
2613             }
2614             avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
2615             if (s->oformat == &ff_mxf_d10_muxer) {
2616                 if (st->index != 1) {
2617                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
2618                     return -1;
2619                 }
2620                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2621                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2622                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
2623                 }
2624                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
2625                 sc->frame_size = 4 + 8 * spf[0].samples_per_frame[0] * 4;
2626             } else if (s->oformat == &ff_mxf_opatom_muxer) {
2627                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
2628
2629                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2630                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2631                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
2632                     return AVERROR_PATCHWELCOME;
2633                 }
2634                 if (st->codecpar->channels != 1) {
2635                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
2636                     return AVERROR(EINVAL);
2637                 }
2638
2639                 spf = ff_mxf_get_samples_per_frame(s, tbc);
2640                 if (!spf) {
2641                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);
2642                     return AVERROR(EINVAL);
2643                 }
2644
2645                 mxf->time_base = st->time_base;
2646                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)
2647                     return ret;
2648
2649                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2650                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;
2651                 sc->index = INDEX_WAV;
2652             } else {
2653                 mxf->slice_count = 1;
2654                 sc->frame_size = (st->codecpar->channels * spf[0].samples_per_frame[0] *
2655                                   av_get_bits_per_sample(st->codecpar->codec_id)) / 8;
2656             }
2657         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
2658             AVDictionaryEntry *e = av_dict_get(st->metadata, "data_type", NULL, 0);
2659             if (e && !strcmp(e->value, "vbi_vanc_smpte_436M")) {
2660                 sc->index = INDEX_S436M;
2661             } else {
2662                 av_log(s, AV_LOG_ERROR, "track %d: unsupported data type\n", i);
2663                 return -1;
2664             }
2665             if (st->index != s->nb_streams - 1) {
2666                 av_log(s, AV_LOG_ERROR, "data track must be placed last\n");
2667                 return -1;
2668             }
2669         }
2670
2671         if (!sc->index) {
2672             sc->index = mxf_get_essence_container_ul_index(st->codecpar->codec_id);
2673             if (sc->index == -1) {
2674                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
2675                        "codec not currently supported in container\n", i);
2676                 return -1;
2677             }
2678         }
2679
2680         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
2681
2682         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
2683         sc->track_essence_element_key[15] = present[sc->index];
2684         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
2685
2686         if (!present[sc->index])
2687             mxf->essence_container_count++;
2688         present[sc->index]++;
2689     }
2690
2691     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
2692         mxf->essence_container_count = 1;
2693     }
2694
2695     if (!(s->flags & AVFMT_FLAG_BITEXACT))
2696         mxf_gen_umid(s);
2697
2698     for (i = 0; i < s->nb_streams; i++) {
2699         MXFStreamContext *sc = s->streams[i]->priv_data;
2700         // update element count
2701         sc->track_essence_element_key[13] = present[sc->index];
2702         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
2703             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
2704         else
2705             sc->order = AV_RB32(sc->track_essence_element_key+12);
2706     }
2707
2708     if (ff_parse_creation_time_metadata(s, &timestamp, 0) > 0)
2709         mxf->timestamp = mxf_parse_timestamp(timestamp);
2710     mxf->duration = -1;
2711
2712     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
2713     if (!mxf->timecode_track)
2714         return AVERROR(ENOMEM);
2715     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
2716     if (!mxf->timecode_track->priv_data)
2717         return AVERROR(ENOMEM);
2718     mxf->timecode_track->index = -1;
2719
2720     if (!spf)
2721         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
2722
2723     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
2724         return -1;
2725
2726     return 0;
2727 }
2728
2729 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
2730 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 };
2731
2732 static void mxf_write_system_item(AVFormatContext *s)
2733 {
2734     MXFContext *mxf = s->priv_data;
2735     AVIOContext *pb = s->pb;
2736     unsigned frame;
2737     uint32_t time_code;
2738     int i, system_item_bitmap = 0x58; // UL, user date/time stamp, picture present
2739
2740     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2741
2742     // write system metadata pack
2743     avio_write(pb, system_metadata_pack_key, 16);
2744     klv_encode_ber4_length(pb, 57);
2745
2746     for (i = 0; i < s->nb_streams; i++) {
2747         if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_AUDIO)
2748             system_item_bitmap |= 0x4;
2749         else if (s->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_DATA)
2750             system_item_bitmap |= 0x2;
2751     }
2752     avio_w8(pb, system_item_bitmap);
2753     avio_w8(pb, mxf->content_package_rate); // content package rate
2754     avio_w8(pb, 0x00); // content package type
2755     avio_wb16(pb, 0x00); // channel handle
2756     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow
2757     if (mxf->essence_container_count > 1)
2758         avio_write(pb, multiple_desc_ul, 16);
2759     else {
2760         MXFStreamContext *sc = s->streams[0]->priv_data;
2761         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
2762     }
2763     avio_w8(pb, 0);
2764     avio_wb64(pb, 0);
2765     avio_wb64(pb, 0); // creation date/time stamp
2766
2767     avio_w8(pb, 0x81); // SMPTE 12M time code
2768     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
2769     avio_wb32(pb, time_code);
2770     avio_wb32(pb, 0); // binary group data
2771     avio_wb64(pb, 0);
2772
2773     // write system metadata package set
2774     avio_write(pb, system_metadata_package_set_key, 16);
2775     klv_encode_ber4_length(pb, 35);
2776     avio_w8(pb, 0x83); // UMID
2777     avio_wb16(pb, 0x20);
2778     mxf_write_umid(s, 1);
2779 }
2780
2781 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2782 {
2783     MXFContext *mxf = s->priv_data;
2784     AVIOContext *pb = s->pb;
2785     int frame_size = pkt->size / st->codecpar->block_align;
2786     uint8_t *samples = pkt->data;
2787     uint8_t *end = pkt->data + pkt->size;
2788     int i;
2789
2790     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
2791
2792     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
2793     avio_wl16(pb, frame_size);
2794     avio_w8(pb, (1<<st->codecpar->channels)-1);
2795
2796     while (samples < end) {
2797         for (i = 0; i < st->codecpar->channels; i++) {
2798             uint32_t sample;
2799             if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
2800                 sample = AV_RL24(samples)<< 4;
2801                 samples += 3;
2802             } else {
2803                 sample = AV_RL16(samples)<<12;
2804                 samples += 2;
2805             }
2806             avio_wl32(pb, sample | i);
2807         }
2808         for (; i < 8; i++)
2809             avio_wl32(pb, i);
2810     }
2811 }
2812
2813 static int mxf_write_opatom_body_partition(AVFormatContext *s)
2814 {
2815     MXFContext *mxf = s->priv_data;
2816     AVIOContext *pb = s->pb;
2817     AVStream *st = s->streams[0];
2818     MXFStreamContext *sc = st->priv_data;
2819     const uint8_t *key = NULL;
2820
2821     int err;
2822
2823     if (!mxf->header_written)
2824         key = body_partition_key;
2825
2826     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)
2827         return err;
2828     mxf_write_klv_fill(s);
2829     avio_write(pb, sc->track_essence_element_key, 16);
2830     klv_encode_ber9_length(pb, mxf->body_offset);
2831     return 0;
2832 }
2833
2834 static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)
2835 {
2836     MXFContext *mxf = s->priv_data;
2837     AVIOContext *pb = s->pb;
2838
2839     int err;
2840
2841     if (!mxf->header_written) {
2842         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2843             return err;
2844         mxf_write_klv_fill(s);
2845
2846         if ((err = mxf_write_opatom_body_partition(s)) < 0)
2847             return err;
2848         mxf->header_written = 1;
2849     }
2850
2851     if (!mxf->edit_unit_byte_count) {
2852         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2853         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;
2854         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;
2855     }
2856     mxf->edit_units_count++;
2857     avio_write(pb, pkt->data, pkt->size);
2858     mxf->body_offset += pkt->size;
2859     avio_flush(pb);
2860
2861     return 0;
2862 }
2863
2864 static void mxf_compute_edit_unit_byte_count(AVFormatContext *s)
2865 {
2866     MXFContext *mxf = s->priv_data;
2867     int i;
2868
2869     if (s->oformat == &ff_mxf_opatom_muxer) {
2870         MXFStreamContext *sc = s->streams[0]->priv_data;
2871         mxf->edit_unit_byte_count = sc->frame_size;
2872         return;
2873     }
2874
2875     mxf->edit_unit_byte_count = KAG_SIZE; // system element
2876     for (i = 0; i < s->nb_streams; i++) {
2877         AVStream *st = s->streams[i];
2878         MXFStreamContext *sc = st->priv_data;
2879         sc->slice_offset = mxf->edit_unit_byte_count;
2880         mxf->edit_unit_byte_count += 16 + 4 + sc->frame_size;
2881         mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2882     }
2883 }
2884
2885 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
2886 {
2887     MXFContext *mxf = s->priv_data;
2888     AVIOContext *pb = s->pb;
2889     AVStream *st = s->streams[pkt->stream_index];
2890     MXFStreamContext *sc = st->priv_data;
2891     MXFIndexEntry ie = {0};
2892     int err;
2893
2894     if (!mxf->cbr_index && !mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
2895         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
2896                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
2897             mxf->edit_units_count = 0;
2898             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
2899             return err;
2900         }
2901     }
2902
2903     if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2904         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
2905             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
2906             return -1;
2907         }
2908     } else if (st->codecpar->codec_id == AV_CODEC_ID_DNXHD) {
2909         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
2910             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
2911             return -1;
2912         }
2913     } else if (st->codecpar->codec_id == AV_CODEC_ID_PRORES) {
2914         if (!mxf_parse_prores_frame(s, st, pkt)) {
2915             av_log(s, AV_LOG_ERROR, "could not get prores profile\n");
2916             return -1;
2917         }
2918     } else if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {
2919         if (!mxf_parse_dv_frame(s, st, pkt)) {
2920             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
2921             return -1;
2922         }
2923     } else if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2924         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {
2925             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");
2926             return -1;
2927         }
2928     }
2929
2930     if (mxf->cbr_index) {
2931         if (pkt->size != sc->frame_size && st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2932             av_log(s, AV_LOG_ERROR, "track %d: frame size does not match index unit size, %d != %d\n",
2933                    st->index, pkt->size, sc->frame_size);
2934             return -1;
2935         }
2936         if (!mxf->header_written)
2937             mxf_compute_edit_unit_byte_count(s);
2938     }
2939
2940     if (s->oformat == &ff_mxf_opatom_muxer)
2941         return mxf_write_opatom_packet(s, pkt, &ie);
2942
2943     if (!mxf->header_written) {
2944         if (mxf->edit_unit_byte_count) {
2945             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
2946                 return err;
2947             mxf_write_klv_fill(s);
2948             mxf_write_index_table_segment(s);
2949         } else {
2950             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2951                 return err;
2952         }
2953         mxf->header_written = 1;
2954     }
2955
2956     if (st->index == 0) {
2957         if (!mxf->edit_unit_byte_count &&
2958             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
2959             !(ie.flags & 0x33)) { // I-frame, GOP start
2960             mxf_write_klv_fill(s);
2961             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
2962                 return err;
2963             mxf_write_klv_fill(s);
2964             mxf_write_index_table_segment(s);
2965         }
2966
2967         mxf_write_klv_fill(s);
2968         mxf_write_system_item(s);
2969
2970         if (!mxf->edit_unit_byte_count) {
2971             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2972             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2973             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2974             mxf->body_offset += KAG_SIZE; // size of system element
2975         }
2976         mxf->edit_units_count++;
2977     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2978         if (!mxf->edit_units_count) {
2979             av_log(s, AV_LOG_ERROR, "No packets in first stream\n");
2980             return AVERROR_PATCHWELCOME;
2981         }
2982         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2983             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2984     }
2985
2986     mxf_write_klv_fill(s);
2987     avio_write(pb, sc->track_essence_element_key, 16); // write key
2988     if (s->oformat == &ff_mxf_d10_muxer &&
2989         st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2990         mxf_write_d10_audio_packet(s, st, pkt);
2991     } else {
2992         klv_encode_ber4_length(pb, pkt->size); // write length
2993         avio_write(pb, pkt->data, pkt->size);
2994         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2995     }
2996
2997     avio_flush(pb);
2998
2999     return 0;
3000 }
3001
3002 static void mxf_write_random_index_pack(AVFormatContext *s)
3003 {
3004     MXFContext *mxf = s->priv_data;
3005     AVIOContext *pb = s->pb;
3006     uint64_t pos = avio_tell(pb);
3007     int i;
3008
3009     avio_write(pb, random_index_pack_key, 16);
3010     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
3011
3012     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
3013         avio_wb32(pb, 1); // BodySID of header partition
3014     else
3015         avio_wb32(pb, 0);
3016     avio_wb64(pb, 0); // offset of header partition
3017
3018     for (i = 0; i < mxf->body_partitions_count; i++) {
3019         avio_wb32(pb, 1); // BodySID
3020         avio_wb64(pb, mxf->body_partition_offset[i]);
3021     }
3022
3023     avio_wb32(pb, 0); // BodySID of footer partition
3024     avio_wb64(pb, mxf->footer_partition_offset);
3025
3026     avio_wb32(pb, avio_tell(pb) - pos + 4);
3027 }
3028
3029 static int mxf_write_footer(AVFormatContext *s)
3030 {
3031     MXFContext *mxf = s->priv_data;
3032     AVIOContext *pb = s->pb;
3033     int i, err = 0;
3034
3035     if (!mxf->header_written ||
3036         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
3037         /* reason could be invalid options/not supported codec/out of memory */
3038         err = AVERROR_UNKNOWN;
3039         goto end;
3040     }
3041
3042     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
3043
3044     mxf_write_klv_fill(s);
3045     mxf->footer_partition_offset = avio_tell(pb);
3046     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
3047         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
3048             goto end;
3049     } else {
3050         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
3051             goto end;
3052         mxf_write_klv_fill(s);
3053         mxf_write_index_table_segment(s);
3054     }
3055
3056     mxf_write_klv_fill(s);
3057     mxf_write_random_index_pack(s);
3058
3059     if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
3060         if (s->oformat == &ff_mxf_opatom_muxer) {
3061             /* rewrite body partition to update lengths */
3062             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
3063             if ((err = mxf_write_opatom_body_partition(s)) < 0)
3064                 goto end;
3065         }
3066
3067         avio_seek(pb, 0, SEEK_SET);
3068         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
3069             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
3070                 goto end;
3071             mxf_write_klv_fill(s);
3072             mxf_write_index_table_segment(s);
3073         } else {
3074             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
3075                 goto end;
3076         }
3077         // update footer partition offset
3078         for (i = 0; i < mxf->body_partitions_count; i++) {
3079             avio_seek(pb, mxf->body_partition_offset[i]+44, SEEK_SET);
3080             avio_wb64(pb, mxf->footer_partition_offset);
3081         }
3082     }
3083
3084 end:
3085     ff_audio_interleave_close(s);
3086
3087     av_freep(&mxf->index_entries);
3088     av_freep(&mxf->body_partition_offset);
3089     av_freep(&mxf->timecode_track->priv_data);
3090     av_freep(&mxf->timecode_track);
3091
3092     mxf_free(s);
3093
3094     return err < 0 ? err : 0;
3095 }
3096
3097 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
3098 {
3099     int i, stream_count = 0;
3100
3101     for (i = 0; i < s->nb_streams; i++)
3102         stream_count += !!s->streams[i]->last_in_packet_buffer;
3103
3104     if (stream_count && (s->nb_streams == stream_count || flush)) {
3105         AVPacketList *pktl = s->internal->packet_buffer;
3106         if (s->nb_streams != stream_count) {
3107             AVPacketList *last = NULL;
3108             // find last packet in edit unit
3109             while (pktl) {
3110                 if (!stream_count || pktl->pkt.stream_index == 0)
3111                     break;
3112                 // update last packet in packet buffer
3113                 if (s->streams[pktl->pkt.stream_index]->last_in_packet_buffer != pktl)
3114                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer = pktl;
3115                 last = pktl;
3116                 pktl = pktl->next;
3117                 stream_count--;
3118             }
3119             // purge packet queue
3120             while (pktl) {
3121                 AVPacketList *next = pktl->next;
3122                 av_packet_unref(&pktl->pkt);
3123                 av_freep(&pktl);
3124                 pktl = next;
3125             }
3126             if (last)
3127                 last->next = NULL;
3128             else {
3129                 s->internal->packet_buffer = NULL;
3130                 s->internal->packet_buffer_end= NULL;
3131                 goto out;
3132             }
3133             pktl = s->internal->packet_buffer;
3134         }
3135
3136         *out = pktl->pkt;
3137         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
3138         s->internal->packet_buffer = pktl->next;
3139         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
3140             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
3141         if(!s->internal->packet_buffer)
3142             s->internal->packet_buffer_end= NULL;
3143         av_freep(&pktl);
3144         return 1;
3145     } else {
3146     out:
3147         av_init_packet(out);
3148         return 0;
3149     }
3150 }
3151
3152 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
3153 {
3154     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
3155     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
3156
3157     return next->dts > pkt->dts ||
3158         (next->dts == pkt->dts && sc->order < sc2->order);
3159 }
3160
3161 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
3162 {
3163     return ff_audio_rechunk_interleave(s, out, pkt, flush,
3164                                mxf_interleave_get_packet, mxf_compare_timestamps);
3165 }
3166
3167 #define MXF_COMMON_OPTIONS \
3168     { "signal_standard", "Force/set Signal Standard",\
3169       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3170     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\
3171       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3172     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\
3173       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3174     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\
3175       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3176     { "smpte274m", "SMPTE 274M (1125 line)",\
3177       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3178     { "smpte296m", "SMPTE 296M (750 line progressive)",\
3179       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3180     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\
3181       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
3182     { "smpte428", "SMPTE 428-1 DCDM",\
3183       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},
3184
3185
3186
3187 static const AVOption mxf_options[] = {
3188     MXF_COMMON_OPTIONS
3189     { "store_user_comments", "",
3190       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
3191     { NULL },
3192 };
3193
3194 static const AVClass mxf_muxer_class = {
3195     .class_name     = "MXF muxer",
3196     .item_name      = av_default_item_name,
3197     .option         = mxf_options,
3198     .version        = LIBAVUTIL_VERSION_INT,
3199 };
3200
3201 static const AVOption d10_options[] = {
3202     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
3203       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
3204     MXF_COMMON_OPTIONS
3205     { "store_user_comments", "",
3206       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
3207     { NULL },
3208 };
3209
3210 static const AVClass mxf_d10_muxer_class = {
3211     .class_name     = "MXF-D10 muxer",
3212     .item_name      = av_default_item_name,
3213     .option         = d10_options,
3214     .version        = LIBAVUTIL_VERSION_INT,
3215 };
3216
3217 static const AVOption opatom_options[] = {
3218     { "mxf_audio_edit_rate", "Audio edit rate for timecode",
3219         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
3220     MXF_COMMON_OPTIONS
3221     { "store_user_comments", "",
3222       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
3223     { NULL },
3224 };
3225
3226 static const AVClass mxf_opatom_muxer_class = {
3227     .class_name     = "MXF-OPAtom muxer",
3228     .item_name      = av_default_item_name,
3229     .option         = opatom_options,
3230     .version        = LIBAVUTIL_VERSION_INT,
3231 };
3232
3233 AVOutputFormat ff_mxf_muxer = {
3234     .name              = "mxf",
3235     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
3236     .mime_type         = "application/mxf",
3237     .extensions        = "mxf",
3238     .priv_data_size    = sizeof(MXFContext),
3239     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
3240     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
3241     .write_header      = mxf_write_header,
3242     .write_packet      = mxf_write_packet,
3243     .write_trailer     = mxf_write_footer,
3244     .flags             = AVFMT_NOTIMESTAMPS,
3245     .interleave_packet = mxf_interleave,
3246     .priv_class        = &mxf_muxer_class,
3247 };
3248
3249 AVOutputFormat ff_mxf_d10_muxer = {
3250     .name              = "mxf_d10",
3251     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
3252     .mime_type         = "application/mxf",
3253     .priv_data_size    = sizeof(MXFContext),
3254     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
3255     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
3256     .write_header      = mxf_write_header,
3257     .write_packet      = mxf_write_packet,
3258     .write_trailer     = mxf_write_footer,
3259     .flags             = AVFMT_NOTIMESTAMPS,
3260     .interleave_packet = mxf_interleave,
3261     .priv_class        = &mxf_d10_muxer_class,
3262 };
3263
3264 AVOutputFormat ff_mxf_opatom_muxer = {
3265     .name              = "mxf_opatom",
3266     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
3267     .mime_type         = "application/mxf",
3268     .extensions        = "mxf",
3269     .priv_data_size    = sizeof(MXFContext),
3270     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
3271     .video_codec       = AV_CODEC_ID_DNXHD,
3272     .write_header      = mxf_write_header,
3273     .write_packet      = mxf_write_packet,
3274     .write_trailer     = mxf_write_footer,
3275     .flags             = AVFMT_NOTIMESTAMPS,
3276     .interleave_packet = mxf_interleave,
3277     .priv_class        = &mxf_opatom_muxer_class,
3278 };