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

   1 /*
   2  * MXF muxer
   3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
   4  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /*
  24  * References
  25  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
  26  * SMPTE 377M MXF File Format Specifications
  27  * SMPTE 379M MXF Generic Container
  28  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
  29  * SMPTE 422M Mapping JPEG 2000 Codestreams into the MXF Generic Container
  30  * SMPTE RP210: SMPTE Metadata Dictionary
  31  * SMPTE RP224: Registry of SMPTE Universal Labels
  32  */
  33
  34 #include <inttypes.h>
  35 #include <math.h>
  36 #include <time.h>
  37
  38 #include "libavutil/opt.h"
  39 #include "libavutil/random_seed.h"
  40 #include "libavutil/timecode.h"
  41 #include "libavutil/avassert.h"
  42 #include "libavutil/pixdesc.h"
  43 #include "libavutil/time_internal.h"
  44 #include "libavcodec/bytestream.h"
  45 #include "libavcodec/dnxhddata.h"
  46 #include "libavcodec/h264.h"
  47 #include "libavcodec/internal.h"
  48 #include "audiointerleave.h"
  49 #include "avformat.h"
  50 #include "avio_internal.h"
  51 #include "internal.h"
  52 #include "mxf.h"
  53 #include "config.h"
  54
  55 extern AVOutputFormat ff_mxf_d10_muxer;
  56 extern AVOutputFormat ff_mxf_opatom_muxer;
  57
  58 #define EDIT_UNITS_PER_BODY 250
  59 #define KAG_SIZE 512
  60
  61 typedef struct MXFLocalTagPair {
  62     int local_tag;
  63     UID uid;
  64 } MXFLocalTagPair;
  65
  66 typedef struct MXFIndexEntry {
  67     uint8_t flags;
  68     uint64_t offset;
  69     unsigned slice_offset; ///< offset of audio slice
  70     uint16_t temporal_ref;
  71 } MXFIndexEntry;
  72
  73 typedef struct MXFStreamContext {
  74     AudioInterleaveContext aic;
  75     UID track_essence_element_key;
  76     int index;               ///< index in mxf_essence_container_uls table
  77     const UID *codec_ul;
  78     int order;               ///< interleaving order if dts are equal
  79     int interlaced;          ///< whether picture is interlaced
  80     int field_dominance;     ///< tff=1, bff=2
  81     int component_depth;
  82     int h_chroma_sub_sample;
  83     int temporal_reordering;
  84     AVRational aspect_ratio; ///< display aspect ratio
  85     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
  86     int video_bit_rate;
  87 } MXFStreamContext;
  88
  89 typedef struct MXFContainerEssenceEntry {
  90     UID container_ul;
  91     UID element_ul;
  92     UID codec_ul;
  93     void (*write_desc)(AVFormatContext *, AVStream *);
  94 } MXFContainerEssenceEntry;
  95
  96 static const struct {
  97     enum AVCodecID id;
  98     int index;
  99 } mxf_essence_mappings[] = {
 100     { AV_CODEC_ID_MPEG2VIDEO, 0 },
 101     { AV_CODEC_ID_PCM_S24LE,  1 },
 102     { AV_CODEC_ID_PCM_S16LE,  1 },
 103     { AV_CODEC_ID_DVVIDEO,   15 },
 104     { AV_CODEC_ID_DNXHD,     24 },
 105     { AV_CODEC_ID_JPEG2000,  34 },
 106     { AV_CODEC_ID_H264,      35 },
 107     { AV_CODEC_ID_NONE }
 108 };
 109
 110 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
 111 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
 112 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
 113 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
 114 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
 115
 116 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
 117     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 118       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 119       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 120       mxf_write_mpegvideo_desc },
 121     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 122       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 123       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 124       mxf_write_aes3_desc },
 125     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 126       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 127       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 128       mxf_write_wav_desc },
 129     // D-10 625/50 PAL 50mb/s
 130     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 131       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 132       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 133       mxf_write_cdci_desc },
 134     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 135       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 136       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 137       mxf_write_generic_sound_desc },
 138     // D-10 525/60 NTSC 50mb/s
 139     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 140       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 141       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 142       mxf_write_cdci_desc },
 143     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 144       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 145       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 146       mxf_write_generic_sound_desc },
 147     // D-10 625/50 PAL 40mb/s
 148     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 149       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 150       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 151       mxf_write_cdci_desc },
 152     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 153       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 154       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 155       mxf_write_generic_sound_desc },
 156     // D-10 525/60 NTSC 40mb/s
 157     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 158       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 159       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 160       mxf_write_cdci_desc },
 161     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 162       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 163       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 164       mxf_write_generic_sound_desc },
 165     // D-10 625/50 PAL 30mb/s
 166     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 167       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 168       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 169       mxf_write_cdci_desc },
 170     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 171       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 172       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 173       mxf_write_generic_sound_desc },
 174     // D-10 525/60 NTSC 30mb/s
 175     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 176       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 177       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 178       mxf_write_cdci_desc },
 179     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 180       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 181       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 182       mxf_write_generic_sound_desc },
 183     // DV Unknown
 184     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
 185       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 186       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
 187       mxf_write_cdci_desc },
 188     // DV25 525/60
 189     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },
 190       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 191       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 192       mxf_write_cdci_desc },
 193     // DV25 625/50
 194     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },
 195       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 196       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },
 197       mxf_write_cdci_desc },
 198     // DV50 525/60
 199     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },
 200       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 201       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },
 202       mxf_write_cdci_desc },
 203     // DV50 625/50
 204     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },
 205       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 206       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },
 207       mxf_write_cdci_desc },
 208     // DV100 1080/60
 209     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },
 210       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 211       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },
 212       mxf_write_cdci_desc },
 213     // DV100 1080/50
 214     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },
 215       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 216       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },
 217       mxf_write_cdci_desc },
 218     // DV100 720/60
 219     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },
 220       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 221       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },
 222       mxf_write_cdci_desc },
 223     // DV100 720/50
 224     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },
 225       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 226       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },
 227       mxf_write_cdci_desc },
 228     // DNxHD 1080p 10bit high
 229     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 230       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 231       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
 232       mxf_write_cdci_desc },
 233     // DNxHD 1080p 8bit medium
 234     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 235       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 236       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },
 237       mxf_write_cdci_desc },
 238     // DNxHD 1080p 8bit high
 239     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 240       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 241       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },
 242       mxf_write_cdci_desc },
 243     // DNxHD 1080i 10bit high
 244     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 245       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 246       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },
 247       mxf_write_cdci_desc },
 248     // DNxHD 1080i 8bit medium
 249     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 250       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 251       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },
 252       mxf_write_cdci_desc },
 253     // DNxHD 1080i 8bit high
 254     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 255       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 256       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },
 257       mxf_write_cdci_desc },
 258     // DNxHD 720p 10bit
 259     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 260       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 261       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },
 262       mxf_write_cdci_desc },
 263     // DNxHD 720p 8bit high
 264     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 265       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 266       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },
 267       mxf_write_cdci_desc },
 268     // DNxHD 720p 8bit medium
 269     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 270       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 271       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },
 272       mxf_write_cdci_desc },
 273     // DNxHD 720p 8bit low
 274     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 275       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 276       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },
 277       mxf_write_cdci_desc },
 278     // JPEG2000
 279     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },
 280       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },
 281       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },
 282       mxf_write_cdci_desc },
 283     // H.264
 284     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },
 285       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 286       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 287       mxf_write_mpegvideo_desc },
 288     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 289       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 290       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 291       NULL },
 292 };
 293
 294 typedef struct MXFContext {
 295     AVClass *av_class;
 296     int64_t footer_partition_offset;
 297     int essence_container_count;
 298     AVRational time_base;
 299     int header_written;
 300     MXFIndexEntry *index_entries;
 301     unsigned edit_units_count;
 302     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 303     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 304     int last_indexed_edit_unit;
 305     uint64_t *body_partition_offset;
 306     unsigned body_partitions_count;
 307     int last_key_index;  ///< index of last key frame
 308     uint64_t duration;
 309     AVTimecode tc;       ///< timecode context
 310     AVStream *timecode_track;
 311     int timecode_base;       ///< rounded time code base (25 or 30)
 312     int edit_unit_byte_count; ///< fixed edit unit byte count
 313     uint64_t body_offset;
 314     uint32_t instance_number;
 315     uint8_t umid[16];        ///< unique material identifier
 316     int channel_count;
 317     uint32_t tagged_value_count;
 318     AVRational audio_edit_rate;
 319 } MXFContext;
 320
 321 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 322 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 323
 324 /**
 325  * complete key for operation pattern, partitions, and primer pack
 326  */
 327 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 328 static const uint8_t opatom_ul[]                   = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x02,0x01,0x10,0x03,0x00,0x00 };
 329 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 330 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 331 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 332 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 333 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
 334 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
 335 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 336 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 337
 338 /**
 339  * partial key for header metadata
 340  */
 341 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 342 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 343
 344 /**
 345  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 346  */
 347 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 348     // preface set
 349     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 350     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 351     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 352     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 353     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 354     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 355     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 356     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 357     // Identification
 358     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 359     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 360     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 361     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 362     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 363     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 364     // Content Storage
 365     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 366     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 367     // Essence Container Data
 368     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 369     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 370     // Package
 371     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 372     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 373     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 374     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */
 375     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 376     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */
 377     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 378     // Track
 379     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 380     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 381     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 382     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 383     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 384     // Sequence
 385     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 386     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 387     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 388     // Source Clip
 389     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 390     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 391     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 392     // Timecode Component
 393     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 394     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 395     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 396     // Tagged Value
 397     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */
 398     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */
 399     // File Descriptor
 400     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 401     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 402     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 403     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */
 404     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 405     // Generic Picture Essence Descriptor
 406     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 407     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 408     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 409     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 410     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 411     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 412     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */
 413     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 414     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 415     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 416     // CDCI Picture Essence Descriptor
 417     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 418     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 419     // Generic Sound Essence Descriptor
 420     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 421     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 422     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 423     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 424     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 425     // Index Table Segment
 426     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 427     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 428     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 429     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 430     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 431     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 432     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 433     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 434     // MPEG video Descriptor
 435     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 436     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 437     // Wave Audio Essence Descriptor
 438     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 439     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 440 };
 441
 442 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 443 {
 444     avio_write(pb, uuid_base, 12);
 445     avio_wb16(pb, type);
 446     avio_wb16(pb, value);
 447 }
 448
 449 static void mxf_write_umid(AVFormatContext *s, int type)
 450 {
 451     MXFContext *mxf = s->priv_data;
 452     avio_write(s->pb, umid_ul, 13);
 453     avio_wb24(s->pb, mxf->instance_number);
 454     avio_write(s->pb, mxf->umid, 15);
 455     avio_w8(s->pb, type);
 456 }
 457
 458 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 459 {
 460     avio_wb32(pb, ref_count);
 461     avio_wb32(pb, 16);
 462 }
 463
 464 static int klv_ber_length(uint64_t len)
 465 {
 466     if (len < 128)
 467         return 1;
 468     else
 469         return (av_log2(len) >> 3) + 2;
 470 }
 471
 472 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 473 {
 474     // Determine the best BER size
 475     int size;
 476     if (len < 128) {
 477         //short form
 478         avio_w8(pb, len);
 479         return 1;
 480     }
 481
 482     size = (av_log2(len) >> 3) + 1;
 483
 484     // long form
 485     avio_w8(pb, 0x80 + size);
 486     while(size) {
 487         size--;
 488         avio_w8(pb, len >> 8 * size & 0xff);
 489     }
 490     return 0;
 491 }
 492
 493 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 494 {
 495     avio_w8(pb, 0x80 + 3);
 496     avio_wb24(pb, len);
 497 }
 498
 499 static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len)
 500 {
 501     avio_w8(pb, 0x80 + 8);
 502     avio_wb64(pb, len);
 503 }
 504
 505 /*
 506  * Get essence container ul index
 507  */
 508 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 509 {
 510     int i;
 511     for (i = 0; mxf_essence_mappings[i].id; i++)
 512         if (mxf_essence_mappings[i].id == id)
 513             return mxf_essence_mappings[i].index;
 514     return -1;
 515 }
 516
 517 static void mxf_write_primer_pack(AVFormatContext *s)
 518 {
 519     AVIOContext *pb = s->pb;
 520     int local_tag_number, i = 0;
 521
 522     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 523
 524     avio_write(pb, primer_pack_key, 16);
 525     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 526
 527     avio_wb32(pb, local_tag_number); // local_tag num
 528     avio_wb32(pb, 18); // item size, always 18 according to the specs
 529
 530     for (i = 0; i < local_tag_number; i++) {
 531         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 532         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 533     }
 534 }
 535
 536 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
 537 {
 538     avio_wb16(pb, tag);
 539     avio_wb16(pb, size);
 540 }
 541
 542 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 543 {
 544     avio_write(pb, header_metadata_key, 13);
 545     avio_wb24(pb, value);
 546 }
 547
 548 static void mxf_free(AVFormatContext *s)
 549 {
 550     int i;
 551
 552     for (i = 0; i < s->nb_streams; i++) {
 553         AVStream *st = s->streams[i];
 554         av_freep(&st->priv_data);
 555     }
 556 }
 557
 558 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 559 {
 560     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 561     while (uls->uid[0]) {
 562         if (type == uls->id)
 563             break;
 564         uls++;
 565     }
 566     return uls;
 567 }
 568
 569 //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors
 570 #define DESCRIPTOR_COUNT(essence_container_count) \
 571     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)
 572
 573 static void mxf_write_essence_container_refs(AVFormatContext *s)
 574 {
 575     MXFContext *c = s->priv_data;
 576     AVIOContext *pb = s->pb;
 577     int i;
 578
 579     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));
 580     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 581     for (i = 0; i < c->essence_container_count; i++) {
 582         MXFStreamContext *sc = s->streams[i]->priv_data;
 583         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 584     }
 585
 586     if (c->essence_container_count > 1)
 587         avio_write(pb, multiple_desc_ul, 16);
 588 }
 589
 590 static void mxf_write_preface(AVFormatContext *s)
 591 {
 592     MXFContext *mxf = s->priv_data;
 593     AVIOContext *pb = s->pb;
 594
 595     mxf_write_metadata_key(pb, 0x012f00);
 596     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 597     klv_encode_ber_length(pb, 130 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 598
 599     // write preface set uid
 600     mxf_write_local_tag(pb, 16, 0x3C0A);
 601     mxf_write_uuid(pb, Preface, 0);
 602     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 603
 604     // last modified date
 605     mxf_write_local_tag(pb, 8, 0x3B02);
 606     avio_wb64(pb, mxf->timestamp);
 607
 608     // write version
 609     mxf_write_local_tag(pb, 2, 0x3B05);
 610     avio_wb16(pb, 258); // v1.2
 611
 612     // write identification_refs
 613     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 614     mxf_write_refs_count(pb, 1);
 615     mxf_write_uuid(pb, Identification, 0);
 616
 617     // write content_storage_refs
 618     mxf_write_local_tag(pb, 16, 0x3B03);
 619     mxf_write_uuid(pb, ContentStorage, 0);
 620
 621     // operational pattern
 622     mxf_write_local_tag(pb, 16, 0x3B09);
 623     if (s->oformat == &ff_mxf_opatom_muxer)
 624         avio_write(pb, opatom_ul, 16);
 625     else
 626         avio_write(pb, op1a_ul, 16);
 627
 628     // write essence_container_refs
 629     mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);
 630     mxf_write_essence_container_refs(s);
 631
 632     // write dm_scheme_refs
 633     mxf_write_local_tag(pb, 8, 0x3B0B);
 634     avio_wb64(pb, 0);
 635 }
 636
 637 /*
 638  * Returns the length of the UTF-16 string, in 16-bit characters, that would result
 639  * from decoding the utf-8 string.
 640  */
 641 static uint64_t mxf_utf16len(const char *utf8_str)
 642 {
 643     const uint8_t *q = utf8_str;
 644     uint64_t size = 0;
 645     while (*q) {
 646         uint32_t ch;
 647         GET_UTF8(ch, *q++, goto invalid;)
 648         if (ch < 0x10000)
 649             size++;
 650         else
 651             size += 2;
 652         continue;
 653 invalid:
 654         av_log(NULL, AV_LOG_ERROR, "Invaid UTF8 sequence in mxf_utf16len\n\n");
 655     }
 656     size += 1;
 657     return size;
 658 }
 659
 660 /*
 661  * Returns the calculated length a local tag containing an utf-8 string as utf-16
 662  */
 663 static int mxf_utf16_local_tag_length(const char *utf8_str)
 664 {
 665     uint64_t size;
 666
 667     if (!utf8_str)
 668         return 0;
 669
 670     size = mxf_utf16len(utf8_str);
 671     if (size >= UINT16_MAX/2) {
 672         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 673         return 0;
 674     }
 675
 676     return 4 + size * 2;
 677 }
 678
 679 /*
 680  * Write a local tag containing an utf-8 string as utf-16
 681  */
 682 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
 683 {
 684     uint64_t size = mxf_utf16len(value);
 685
 686     if (size >= UINT16_MAX/2) {
 687         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 688         return;
 689     }
 690
 691     mxf_write_local_tag(pb, size*2, tag);
 692     avio_put_str16be(pb, value);
 693 }
 694
 695 static void mxf_write_identification(AVFormatContext *s)
 696 {
 697     MXFContext *mxf = s->priv_data;
 698     AVIOContext *pb = s->pb;
 699     const char *company = "FFmpeg";
 700     const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
 701     const char *version;
 702     int length;
 703
 704     mxf_write_metadata_key(pb, 0x013000);
 705     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 706
 707     version = s->flags & AVFMT_FLAG_BITEXACT ?
 708         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 709     length = 72 + mxf_utf16_local_tag_length(company) +
 710                   mxf_utf16_local_tag_length(product) +
 711                   mxf_utf16_local_tag_length(version);
 712     klv_encode_ber_length(pb, length);
 713
 714     // write uid
 715     mxf_write_local_tag(pb, 16, 0x3C0A);
 716     mxf_write_uuid(pb, Identification, 0);
 717     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 718
 719     // write generation uid
 720     mxf_write_local_tag(pb, 16, 0x3C09);
 721     mxf_write_uuid(pb, Identification, 1);
 722     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 723     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 724     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 725
 726     // write product uid
 727     mxf_write_local_tag(pb, 16, 0x3C05);
 728     mxf_write_uuid(pb, Identification, 2);
 729
 730     // modification date
 731     mxf_write_local_tag(pb, 8, 0x3C06);
 732     avio_wb64(pb, mxf->timestamp);
 733 }
 734
 735 static void mxf_write_content_storage(AVFormatContext *s)
 736 {
 737     AVIOContext *pb = s->pb;
 738
 739     mxf_write_metadata_key(pb, 0x011800);
 740     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 741     klv_encode_ber_length(pb, 92);
 742
 743     // write uid
 744     mxf_write_local_tag(pb, 16, 0x3C0A);
 745     mxf_write_uuid(pb, ContentStorage, 0);
 746     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 747
 748     // write package reference
 749     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 750     mxf_write_refs_count(pb, 2);
 751     mxf_write_uuid(pb, MaterialPackage, 0);
 752     mxf_write_uuid(pb, SourcePackage, 0);
 753
 754     // write essence container data
 755     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 756     mxf_write_refs_count(pb, 1);
 757     mxf_write_uuid(pb, EssenceContainerData, 0);
 758 }
 759
 760 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 761 {
 762     MXFContext *mxf = s->priv_data;
 763     AVIOContext *pb = s->pb;
 764     MXFStreamContext *sc = st->priv_data;
 765
 766     mxf_write_metadata_key(pb, 0x013b00);
 767     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 768     klv_encode_ber_length(pb, 80);
 769
 770     // write track uid
 771     mxf_write_local_tag(pb, 16, 0x3C0A);
 772     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 773     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 774
 775     // write track id
 776     mxf_write_local_tag(pb, 4, 0x4801);
 777     avio_wb32(pb, st->index+2);
 778
 779     // write track number
 780     mxf_write_local_tag(pb, 4, 0x4804);
 781     if (type == MaterialPackage)
 782         avio_wb32(pb, 0); // track number of material package is 0
 783     else
 784         avio_write(pb, sc->track_essence_element_key + 12, 4);
 785
 786     mxf_write_local_tag(pb, 8, 0x4B01);
 787
 788     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer){
 789         avio_wb32(pb, mxf->tc.rate.num);
 790         avio_wb32(pb, mxf->tc.rate.den);
 791     } else {
 792         avio_wb32(pb, mxf->time_base.den);
 793         avio_wb32(pb, mxf->time_base.num);
 794     }
 795
 796     // write origin
 797     mxf_write_local_tag(pb, 8, 0x4B02);
 798     avio_wb64(pb, 0);
 799
 800     // write sequence refs
 801     mxf_write_local_tag(pb, 16, 0x4803);
 802     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 803 }
 804
 805 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 };
 806
 807 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 808 {
 809     MXFContext *mxf = s->priv_data;
 810     AVIOContext *pb = s->pb;
 811
 812     // find data define uls
 813     mxf_write_local_tag(pb, 16, 0x0201);
 814     if (st == mxf->timecode_track)
 815         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 816     else {
 817         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 818         avio_write(pb, data_def_ul->uid, 16);
 819     }
 820
 821     // write duration
 822     mxf_write_local_tag(pb, 8, 0x0202);
 823
 824     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
 825         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
 826     } else {
 827         avio_wb64(pb, mxf->duration);
 828     }
 829 }
 830
 831 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 832 {
 833     MXFContext *mxf = s->priv_data;
 834     AVIOContext *pb = s->pb;
 835     enum MXFMetadataSetType component;
 836
 837     mxf_write_metadata_key(pb, 0x010f00);
 838     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 839     klv_encode_ber_length(pb, 80);
 840
 841     mxf_write_local_tag(pb, 16, 0x3C0A);
 842     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 843
 844     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 845     mxf_write_common_fields(s, st);
 846
 847     // write structural component
 848     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 849     mxf_write_refs_count(pb, 1);
 850     if (st == mxf->timecode_track)
 851         component = TimecodeComponent;
 852     else
 853         component = SourceClip;
 854     if (type == SourcePackage)
 855         component += TypeBottom;
 856     mxf_write_uuid(pb, component, st->index);
 857 }
 858
 859 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 860 {
 861     MXFContext *mxf = s->priv_data;
 862     AVIOContext *pb = s->pb;
 863
 864     mxf_write_metadata_key(pb, 0x011400);
 865     klv_encode_ber_length(pb, 75);
 866
 867     // UID
 868     mxf_write_local_tag(pb, 16, 0x3C0A);
 869     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
 870                    TimecodeComponent + TypeBottom, st->index);
 871
 872     mxf_write_common_fields(s, st);
 873
 874     // Start Time Code
 875     mxf_write_local_tag(pb, 8, 0x1501);
 876     avio_wb64(pb, mxf->tc.start);
 877
 878     // Rounded Time Code Base
 879     mxf_write_local_tag(pb, 2, 0x1502);
 880     avio_wb16(pb, mxf->timecode_base);
 881
 882     // Drop Frame
 883     mxf_write_local_tag(pb, 1, 0x1503);
 884     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 885 }
 886
 887 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 888 {
 889     AVIOContext *pb = s->pb;
 890     int i;
 891
 892     mxf_write_metadata_key(pb, 0x011100);
 893     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 894     klv_encode_ber_length(pb, 108);
 895
 896     // write uid
 897     mxf_write_local_tag(pb, 16, 0x3C0A);
 898     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 899
 900     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 901     mxf_write_common_fields(s, st);
 902
 903     // write start_position
 904     mxf_write_local_tag(pb, 8, 0x1201);
 905     avio_wb64(pb, 0);
 906
 907     // write source package uid, end of the reference
 908     mxf_write_local_tag(pb, 32, 0x1101);
 909     if (type == SourcePackage) {
 910         for (i = 0; i < 4; i++)
 911             avio_wb64(pb, 0);
 912     } else
 913         mxf_write_umid(s, 1);
 914
 915     // write source track id
 916     mxf_write_local_tag(pb, 4, 0x1102);
 917     if (type == SourcePackage)
 918         avio_wb32(pb, 0);
 919     else
 920         avio_wb32(pb, st->index+2);
 921 }
 922
 923 static void mxf_write_multi_descriptor(AVFormatContext *s)
 924 {
 925     MXFContext *mxf = s->priv_data;
 926     AVIOContext *pb = s->pb;
 927     const uint8_t *ul;
 928     int i;
 929
 930     mxf_write_metadata_key(pb, 0x014400);
 931     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 932     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
 933
 934     mxf_write_local_tag(pb, 16, 0x3C0A);
 935     mxf_write_uuid(pb, MultipleDescriptor, 0);
 936     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 937
 938     // write sample rate
 939     mxf_write_local_tag(pb, 8, 0x3001);
 940     avio_wb32(pb, mxf->time_base.den);
 941     avio_wb32(pb, mxf->time_base.num);
 942
 943     // write essence container ul
 944     mxf_write_local_tag(pb, 16, 0x3004);
 945     if (mxf->essence_container_count > 1)
 946         ul = multiple_desc_ul;
 947     else {
 948         MXFStreamContext *sc = s->streams[0]->priv_data;
 949         ul = mxf_essence_container_uls[sc->index].container_ul;
 950     }
 951     avio_write(pb, ul, 16);
 952
 953     // write sub descriptor refs
 954     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 955     mxf_write_refs_count(pb, s->nb_streams);
 956     for (i = 0; i < s->nb_streams; i++)
 957         mxf_write_uuid(pb, SubDescriptor, i);
 958 }
 959
 960 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 961 {
 962     MXFContext *mxf = s->priv_data;
 963     MXFStreamContext *sc = st->priv_data;
 964     AVIOContext *pb = s->pb;
 965
 966     avio_write(pb, key, 16);
 967     klv_encode_ber4_length(pb, size+20+8+12+20);
 968
 969     mxf_write_local_tag(pb, 16, 0x3C0A);
 970     mxf_write_uuid(pb, SubDescriptor, st->index);
 971
 972     mxf_write_local_tag(pb, 4, 0x3006);
 973     avio_wb32(pb, st->index+2);
 974
 975     mxf_write_local_tag(pb, 8, 0x3001);
 976     avio_wb32(pb, mxf->time_base.den);
 977     avio_wb32(pb, mxf->time_base.num);
 978
 979     mxf_write_local_tag(pb, 16, 0x3004);
 980     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 981 }
 982
 983 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
 984 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
 985 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
 986 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
 987 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
 988
 989 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 990 {
 991     MXFStreamContext *sc = st->priv_data;
 992     AVIOContext *pb = s->pb;
 993     int stored_height = (st->codec->height+15)/16*16;
 994     int display_height;
 995     int f1, f2;
 996     unsigned desc_size = size+8+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20;
 997     if (sc->interlaced && sc->field_dominance)
 998         desc_size += 5;
 999
1000     mxf_write_generic_desc(s, st, key, desc_size);
1001
1002     mxf_write_local_tag(pb, 4, 0x3203);
1003     avio_wb32(pb, st->codec->width);
1004
1005     mxf_write_local_tag(pb, 4, 0x3202);
1006     avio_wb32(pb, stored_height>>sc->interlaced);
1007
1008     mxf_write_local_tag(pb, 4, 0x3209);
1009     avio_wb32(pb, st->codec->width);
1010
1011     if (st->codec->height == 608) // PAL + VBI
1012         display_height = 576;
1013     else if (st->codec->height == 512)  // NTSC + VBI
1014         display_height = 486;
1015     else
1016         display_height = st->codec->height;
1017
1018     mxf_write_local_tag(pb, 4, 0x3208);
1019     avio_wb32(pb, display_height>>sc->interlaced);
1020
1021     // presentation Y offset
1022     mxf_write_local_tag(pb, 4, 0x320B);
1023     avio_wb32(pb, (st->codec->height - display_height)>>sc->interlaced);
1024
1025     // component depth
1026     mxf_write_local_tag(pb, 4, 0x3301);
1027     avio_wb32(pb, sc->component_depth);
1028
1029     // horizontal subsampling
1030     mxf_write_local_tag(pb, 4, 0x3302);
1031     avio_wb32(pb, sc->h_chroma_sub_sample);
1032
1033     // frame layout
1034     mxf_write_local_tag(pb, 1, 0x320C);
1035     avio_w8(pb, sc->interlaced);
1036
1037     // video line map
1038     switch (st->codec->height) {
1039     case  576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
1040     case  608: f1 =  7; f2 = 320; break;
1041     case  480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
1042     case  512: f1 =  7; f2 = 270; break;
1043     case  720: f1 = 26; f2 =   0; break; // progressive
1044     case 1080: f1 = 21; f2 = 584; break;
1045     default:   f1 =  0; f2 =   0; break;
1046     }
1047
1048     if (!sc->interlaced) {
1049         f2  = 0;
1050         f1 *= 2;
1051     }
1052
1053     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
1054     avio_wb32(pb, sc->interlaced ? 2 : 1);
1055     avio_wb32(pb, 4);
1056     avio_wb32(pb, f1);
1057     if (sc->interlaced)
1058         avio_wb32(pb, f2);
1059
1060     mxf_write_local_tag(pb, 8, 0x320E);
1061     avio_wb32(pb, sc->aspect_ratio.num);
1062     avio_wb32(pb, sc->aspect_ratio.den);
1063
1064     mxf_write_local_tag(pb, 16, 0x3201);
1065     avio_write(pb, *sc->codec_ul, 16);
1066
1067     if (sc->interlaced && sc->field_dominance) {
1068         mxf_write_local_tag(pb, 1, 0x3212);
1069         avio_w8(pb, sc->field_dominance);
1070     }
1071
1072 }
1073
1074 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
1075 {
1076     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
1077 }
1078
1079 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1080 {
1081     AVIOContext *pb = s->pb;
1082     MXFStreamContext *sc = st->priv_data;
1083     int profile_and_level = (st->codec->profile<<4) | st->codec->level;
1084
1085     if (st->codec->codec_id != AV_CODEC_ID_H264) {
1086         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
1087
1088         // bit rate
1089         mxf_write_local_tag(pb, 4, 0x8000);
1090         avio_wb32(pb, sc->video_bit_rate);
1091
1092         // profile and level
1093         mxf_write_local_tag(pb, 1, 0x8007);
1094         if (!st->codec->profile)
1095             profile_and_level |= 0x80; // escape bit
1096         avio_w8(pb, profile_and_level);
1097     } else {
1098         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);
1099     }
1100 }
1101
1102 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1103 {
1104     AVIOContext *pb = s->pb;
1105     MXFContext *mxf = s->priv_data;
1106     int show_warnings = !mxf->footer_partition_offset;
1107     int duration_size = 0;
1108
1109     if (s->oformat == &ff_mxf_opatom_muxer)
1110         duration_size = 12;
1111
1112     mxf_write_generic_desc(s, st, key, size+duration_size+5+12+8+8);
1113
1114     if (duration_size > 0){
1115         mxf_write_local_tag(pb, 8, 0x3002);
1116         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
1117     }
1118
1119     // audio locked
1120     mxf_write_local_tag(pb, 1, 0x3D02);
1121     avio_w8(pb, 1);
1122
1123     // write audio sampling rate
1124     mxf_write_local_tag(pb, 8, 0x3D03);
1125     avio_wb32(pb, st->codec->sample_rate);
1126     avio_wb32(pb, 1);
1127
1128     mxf_write_local_tag(pb, 4, 0x3D07);
1129     if (mxf->channel_count == -1) {
1130         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))
1131             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");
1132         avio_wb32(pb, st->codec->channels);
1133     } else if (s->oformat == &ff_mxf_d10_muxer) {
1134         if (show_warnings && (mxf->channel_count < st->codec->channels))
1135             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1136         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1137             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");
1138         avio_wb32(pb, mxf->channel_count);
1139     } else {
1140         if (show_warnings && mxf->channel_count != -1 && s->oformat != &ff_mxf_opatom_muxer)
1141             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");
1142         avio_wb32(pb, st->codec->channels);
1143     }
1144
1145     mxf_write_local_tag(pb, 4, 0x3D01);
1146     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));
1147 }
1148
1149 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1150 {
1151     AVIOContext *pb = s->pb;
1152
1153     mxf_write_generic_sound_common(s, st, key, size+6+8);
1154
1155     mxf_write_local_tag(pb, 2, 0x3D0A);
1156     avio_wb16(pb, st->codec->block_align);
1157
1158     // avg bytes per sec
1159     mxf_write_local_tag(pb, 4, 0x3D09);
1160     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);
1161 }
1162
1163 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1164 {
1165     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
1166 }
1167
1168 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1169 {
1170     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
1171 }
1172
1173 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1174 {
1175     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
1176 }
1177
1178 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 };
1179
1180 static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)
1181 {
1182     MXFContext *mxf = s->priv_data;
1183     AVIOContext *pb = s->pb;
1184     int name_size = mxf_utf16_local_tag_length(name);
1185     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);
1186
1187     if (!name_size || indirect_value_size == 13)
1188         return 1;
1189
1190     mxf_write_metadata_key(pb, 0x013f00);
1191     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);
1192
1193     // write instance UID
1194     mxf_write_local_tag(pb, 16, 0x3C0A);
1195     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);
1196
1197     // write name
1198     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name
1199
1200     // write indirect value
1201     mxf_write_local_tag(pb, indirect_value_size, 0x5003);
1202     avio_write(pb, mxf_indirect_value_utf16le, 17);
1203     avio_put_str16le(pb, value);
1204
1205     mxf->tagged_value_count++;
1206     return 0;
1207 }
1208
1209 static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)
1210 {
1211     MXFContext *mxf = s->priv_data;
1212     AVDictionaryEntry *t = NULL;
1213     int count = 0;
1214
1215     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {
1216         if (mxf->tagged_value_count >= UINT16_MAX) {
1217             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");
1218             return count;
1219         }
1220
1221         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)
1222             count++;
1223     }
1224     return count;
1225 }
1226
1227 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type, const char *package_name)
1228 {
1229     MXFContext *mxf = s->priv_data;
1230     AVIOContext *pb = s->pb;
1231     int i, track_count = s->nb_streams+1;
1232     int name_size = mxf_utf16_local_tag_length(package_name);
1233     int user_comment_count = 0;
1234
1235     if (type == MaterialPackage) {
1236         user_comment_count = mxf_write_user_comments(s, s->metadata);
1237         mxf_write_metadata_key(pb, 0x013600);
1238         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1239         klv_encode_ber_length(pb, 104 + name_size + (16*track_count) + (16*user_comment_count));
1240     } else {
1241         mxf_write_metadata_key(pb, 0x013700);
1242         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1243         klv_encode_ber_length(pb, 124 + name_size + (16*track_count)); // 20 bytes length for descriptor reference
1244     }
1245
1246     // write uid
1247     mxf_write_local_tag(pb, 16, 0x3C0A);
1248     mxf_write_uuid(pb, type, 0);
1249     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
1250     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1251
1252     // write package umid
1253     mxf_write_local_tag(pb, 32, 0x4401);
1254     mxf_write_umid(s, type == SourcePackage);
1255     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1256
1257     // package name
1258     if (name_size)
1259         mxf_write_local_tag_utf16(pb, 0x4402, package_name);
1260
1261     // package creation date
1262     mxf_write_local_tag(pb, 8, 0x4405);
1263     avio_wb64(pb, mxf->timestamp);
1264
1265     // package modified date
1266     mxf_write_local_tag(pb, 8, 0x4404);
1267     avio_wb64(pb, mxf->timestamp);
1268
1269     // write track refs
1270     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
1271     mxf_write_refs_count(pb, track_count);
1272     mxf_write_uuid(pb, type == MaterialPackage ? Track :
1273                    Track + TypeBottom, -1); // timecode track
1274     for (i = 0; i < s->nb_streams; i++)
1275         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
1276
1277     // write user comment refs
1278     mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);
1279     mxf_write_refs_count(pb, user_comment_count);
1280     for (i = 0; i < user_comment_count; i++)
1281          mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);
1282
1283     // write multiple descriptor reference
1284     if (type == SourcePackage) {
1285         mxf_write_local_tag(pb, 16, 0x4701);
1286         if (s->nb_streams > 1) {
1287             mxf_write_uuid(pb, MultipleDescriptor, 0);
1288             mxf_write_multi_descriptor(s);
1289         } else
1290             mxf_write_uuid(pb, SubDescriptor, 0);
1291     }
1292
1293     // write timecode track
1294     mxf_write_track(s, mxf->timecode_track, type);
1295     mxf_write_sequence(s, mxf->timecode_track, type);
1296     mxf_write_timecode_component(s, mxf->timecode_track, type);
1297
1298     for (i = 0; i < s->nb_streams; i++) {
1299         AVStream *st = s->streams[i];
1300         mxf_write_track(s, st, type);
1301         mxf_write_sequence(s, st, type);
1302         mxf_write_structural_component(s, st, type);
1303
1304         if (type == SourcePackage) {
1305             MXFStreamContext *sc = st->priv_data;
1306             mxf_essence_container_uls[sc->index].write_desc(s, st);
1307         }
1308     }
1309 }
1310
1311 static int mxf_write_essence_container_data(AVFormatContext *s)
1312 {
1313     AVIOContext *pb = s->pb;
1314
1315     mxf_write_metadata_key(pb, 0x012300);
1316     klv_encode_ber_length(pb, 72);
1317
1318     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1319     mxf_write_uuid(pb, EssenceContainerData, 0);
1320
1321     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1322     mxf_write_umid(s, 1);
1323
1324     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1325     avio_wb32(pb, 1);
1326
1327     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1328     avio_wb32(pb, 2);
1329
1330     return 0;
1331 }
1332
1333 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1334 {
1335     const char *material_package_name = NULL;
1336     const char *file_package_name = NULL;
1337     AVDictionaryEntry *entry = NULL;
1338     AVStream *st = NULL;
1339     int i;
1340
1341     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
1342        material_package_name = entry->value;
1343
1344     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
1345         file_package_name = entry->value;
1346     } else {
1347         /* check if any of the streams contain a file_package_name */
1348         for (i = 0; i < s->nb_streams; i++) {
1349             st = s->streams[i];
1350             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
1351                 file_package_name = entry->value;
1352                 break;
1353             }
1354         }
1355     }
1356
1357     mxf_write_preface(s);
1358     mxf_write_identification(s);
1359     mxf_write_content_storage(s);
1360     mxf_write_package(s, MaterialPackage, material_package_name);
1361     mxf_write_package(s, SourcePackage, file_package_name);
1362     mxf_write_essence_container_data(s);
1363     return 0;
1364 }
1365
1366 static unsigned klv_fill_size(uint64_t size)
1367 {
1368     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1369     if (pad < 20) // smallest fill item possible
1370         return pad + KAG_SIZE;
1371     else
1372         return pad & (KAG_SIZE-1);
1373 }
1374
1375 static void mxf_write_index_table_segment(AVFormatContext *s)
1376 {
1377     MXFContext *mxf = s->priv_data;
1378     AVIOContext *pb = s->pb;
1379     int i, j, temporal_reordering = 0;
1380     int key_index = mxf->last_key_index;
1381
1382     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1383
1384     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1385         return;
1386
1387     avio_write(pb, index_table_segment_key, 16);
1388
1389     if (mxf->edit_unit_byte_count) {
1390         klv_encode_ber_length(pb, 80);
1391     } else {
1392         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +
1393                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));
1394     }
1395
1396     // instance id
1397     mxf_write_local_tag(pb, 16, 0x3C0A);
1398     mxf_write_uuid(pb, IndexTableSegment, 0);
1399
1400     // index edit rate
1401     mxf_write_local_tag(pb, 8, 0x3F0B);
1402     avio_wb32(pb, mxf->time_base.den);
1403     avio_wb32(pb, mxf->time_base.num);
1404
1405     // index start position
1406     mxf_write_local_tag(pb, 8, 0x3F0C);
1407     avio_wb64(pb, mxf->last_indexed_edit_unit);
1408
1409     // index duration
1410     mxf_write_local_tag(pb, 8, 0x3F0D);
1411     if (mxf->edit_unit_byte_count)
1412         avio_wb64(pb, 0); // index table covers whole container
1413     else
1414         avio_wb64(pb, mxf->edit_units_count);
1415
1416     // edit unit byte count
1417     mxf_write_local_tag(pb, 4, 0x3F05);
1418     avio_wb32(pb, mxf->edit_unit_byte_count);
1419
1420     // index sid
1421     mxf_write_local_tag(pb, 4, 0x3F06);
1422     avio_wb32(pb, 2);
1423
1424     // body sid
1425     mxf_write_local_tag(pb, 4, 0x3F07);
1426     avio_wb32(pb, 1);
1427
1428     if (!mxf->edit_unit_byte_count) {
1429         // real slice count - 1
1430         mxf_write_local_tag(pb, 1, 0x3F08);
1431         avio_w8(pb, mxf->slice_count);
1432
1433         // delta entry array
1434         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1435         avio_wb32(pb, s->nb_streams+1); // num of entries
1436         avio_wb32(pb, 6);               // size of one entry
1437         // write system item delta entry
1438         avio_w8(pb, 0);
1439         avio_w8(pb, 0); // slice entry
1440         avio_wb32(pb, 0); // element delta
1441         for (i = 0; i < s->nb_streams; i++) {
1442             AVStream *st = s->streams[i];
1443             MXFStreamContext *sc = st->priv_data;
1444             avio_w8(pb, sc->temporal_reordering);
1445             if (sc->temporal_reordering)
1446                 temporal_reordering = 1;
1447             if (i == 0) { // video track
1448                 avio_w8(pb, 0); // slice number
1449                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1450             } else { // audio track
1451                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1452                 audio_frame_size += klv_fill_size(audio_frame_size);
1453                 avio_w8(pb, 1);
1454                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1455             }
1456         }
1457
1458         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1459         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1460         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
1461
1462         for (i = 0; i < mxf->edit_units_count; i++) {
1463             int temporal_offset = 0;
1464
1465             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1466                 mxf->last_key_index = key_index;
1467                 key_index = i;
1468             }
1469
1470             if (temporal_reordering) {
1471                 int pic_num_in_gop = i - key_index;
1472                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1473                     for (j = key_index; j < mxf->edit_units_count; j++) {
1474                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1475                             break;
1476                     }
1477                     if (j == mxf->edit_units_count)
1478                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1479                     temporal_offset = j - key_index - pic_num_in_gop;
1480                 }
1481             }
1482             avio_w8(pb, temporal_offset);
1483
1484             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1485                 avio_w8(pb, mxf->last_key_index - i);
1486             } else {
1487                 avio_w8(pb, key_index - i); // key frame offset
1488                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1489                     mxf->last_key_index = key_index;
1490             }
1491
1492             if (!(mxf->index_entries[i].flags & 0x33) && // I frame
1493                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1494                 mxf->index_entries[i].flags |= 0x80; // random access
1495             avio_w8(pb, mxf->index_entries[i].flags);
1496             // stream offset
1497             avio_wb64(pb, mxf->index_entries[i].offset);
1498             if (s->nb_streams > 1)
1499                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1500         }
1501
1502         mxf->last_key_index = key_index - mxf->edit_units_count;
1503         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1504         mxf->edit_units_count = 0;
1505     }
1506 }
1507
1508 static void mxf_write_klv_fill(AVFormatContext *s)
1509 {
1510     unsigned pad = klv_fill_size(avio_tell(s->pb));
1511     if (pad) {
1512         avio_write(s->pb, klv_fill_key, 16);
1513         pad -= 16 + 4;
1514         klv_encode_ber4_length(s->pb, pad);
1515         ffio_fill(s->pb, 0, pad);
1516         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1517     }
1518 }
1519
1520 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1521                                 int indexsid,
1522                                 const uint8_t *key, int write_metadata)
1523 {
1524     MXFContext *mxf = s->priv_data;
1525     AVIOContext *pb = s->pb;
1526     int64_t header_byte_count_offset;
1527     unsigned index_byte_count = 0;
1528     uint64_t partition_offset = avio_tell(pb);
1529     int err;
1530
1531     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1532         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1533             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1534     else if (mxf->edit_unit_byte_count && indexsid)
1535         index_byte_count = 80;
1536
1537     if (index_byte_count) {
1538         // add encoded ber length
1539         index_byte_count += 16 + klv_ber_length(index_byte_count);
1540         index_byte_count += klv_fill_size(index_byte_count);
1541     }
1542
1543     if (key && !memcmp(key, body_partition_key, 16)) {
1544         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1545                                      sizeof(*mxf->body_partition_offset))) < 0) {
1546             mxf->body_partitions_count = 0;
1547             return err;
1548         }
1549         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1550     }
1551
1552     // write klv
1553     if (key)
1554         avio_write(pb, key, 16);
1555     else
1556         avio_write(pb, body_partition_key, 16);
1557
1558     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1559
1560     // write partition value
1561     avio_wb16(pb, 1); // majorVersion
1562     avio_wb16(pb, 2); // minorVersion
1563     avio_wb32(pb, KAG_SIZE); // KAGSize
1564
1565     avio_wb64(pb, partition_offset); // ThisPartition
1566
1567     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1568         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1569     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1570         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1571     else
1572         avio_wb64(pb, 0);
1573
1574     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1575
1576     // set offset
1577     header_byte_count_offset = avio_tell(pb);
1578     avio_wb64(pb, 0); // headerByteCount, update later
1579
1580     // indexTable
1581     avio_wb64(pb, index_byte_count); // indexByteCount
1582     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1583
1584     // BodyOffset
1585     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
1586         avio_wb64(pb, mxf->body_offset);
1587     else
1588         avio_wb64(pb, 0);
1589
1590     avio_wb32(pb, bodysid); // bodySID
1591
1592     // operational pattern
1593     if (s->oformat == &ff_mxf_opatom_muxer)
1594         avio_write(pb, opatom_ul, 16);
1595     else
1596         avio_write(pb, op1a_ul, 16);
1597
1598     // essence container
1599     mxf_write_essence_container_refs(s);
1600
1601     if (write_metadata) {
1602         // mark the start of the headermetadata and calculate metadata size
1603         int64_t pos, start;
1604         unsigned header_byte_count;
1605
1606         mxf_write_klv_fill(s);
1607         start = avio_tell(s->pb);
1608         mxf_write_primer_pack(s);
1609         mxf_write_header_metadata_sets(s);
1610         pos = avio_tell(s->pb);
1611         header_byte_count = pos - start + klv_fill_size(pos);
1612
1613         // update header_byte_count
1614         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1615         avio_wb64(pb, header_byte_count);
1616         avio_seek(pb, pos, SEEK_SET);
1617     }
1618
1619     if(key)
1620         avio_flush(pb);
1621
1622     return 0;
1623 }
1624
1625 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,
1626 AVPacket *pkt)
1627 {
1628     MXFContext *mxf = s->priv_data;
1629     MXFStreamContext *sc = st->priv_data;
1630     int i, cid;
1631     uint8_t* header_cid;
1632     int frame_size = 0;
1633
1634     if (mxf->header_written)
1635         return 1;
1636
1637     if (pkt->size < 43)
1638         return -1;
1639
1640     header_cid = pkt->data + 0x28;
1641     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];
1642
1643     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)
1644         return -1;
1645     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)
1646         return AVERROR_INVALIDDATA;
1647
1648     switch (cid) {
1649     case 1235:
1650         sc->index = 24;
1651         sc->component_depth = 10;
1652         break;
1653     case 1237:
1654         sc->index = 25;
1655         break;
1656     case 1238:
1657         sc->index = 26;
1658         break;
1659     case 1241:
1660         sc->index = 27;
1661         sc->component_depth = 10;
1662         break;
1663     case 1242:
1664         sc->index = 28;
1665         break;
1666     case 1243:
1667         sc->index = 29;
1668         break;
1669     case 1250:
1670         sc->index = 30;
1671         sc->component_depth = 10;
1672         break;
1673     case 1251:
1674         sc->index = 31;
1675         break;
1676     case 1252:
1677         sc->index = 32;
1678         break;
1679     case 1253:
1680         sc->index = 33;
1681         break;
1682     default:
1683         return -1;
1684     }
1685
1686     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1687     sc->aspect_ratio = (AVRational){ 16, 9 };
1688
1689     if(s->oformat == &ff_mxf_opatom_muxer){
1690         mxf->edit_unit_byte_count = frame_size;
1691         return 1;
1692     }
1693
1694     mxf->edit_unit_byte_count = KAG_SIZE;
1695     for (i = 0; i < s->nb_streams; i++) {
1696         AVStream *st = s->streams[i];
1697         MXFStreamContext *sc = st->priv_data;
1698         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1699             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1700             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1701         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1702             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1703             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1704         }
1705     }
1706
1707     return 1;
1708 }
1709
1710 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1711 {
1712     MXFContext *mxf = s->priv_data;
1713     MXFStreamContext *sc = st->priv_data;
1714     uint8_t *vs_pack, *vsc_pack;
1715     int i, ul_index, frame_size, stype, pal;
1716
1717     if (mxf->header_written)
1718         return 1;
1719
1720     // Check for minimal frame size
1721     if (pkt->size < 120000)
1722         return -1;
1723
1724     vs_pack  = pkt->data + 80*5 + 48;
1725     vsc_pack = pkt->data + 80*5 + 53;
1726     stype    = vs_pack[3] & 0x1f;
1727     pal      = (vs_pack[3] >> 5) & 0x1;
1728
1729     if ((vs_pack[2] & 0x07) == 0x02)
1730         sc->aspect_ratio = (AVRational){ 16, 9 };
1731     else
1732         sc->aspect_ratio = (AVRational){ 4, 3 };
1733
1734     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
1735     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
1736     // and set field dominance accordingly
1737     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
1738
1739     switch (stype) {
1740     case 0x18: // DV100 720p
1741         ul_index = 6 + pal;
1742         frame_size = pal ? 288000 : 240000;
1743         if (sc->interlaced) {
1744             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
1745             sc->interlaced = 0;
1746         }
1747         break;
1748     case 0x14: // DV100 1080i
1749         ul_index = 4 + pal;
1750         frame_size = pal ? 576000 : 480000;
1751         break;
1752     case 0x04: // DV50
1753         ul_index = 2 + pal;
1754         frame_size = pal ? 288000 : 240000;
1755         break;
1756     default: // DV25
1757         ul_index = 0 + pal;
1758         frame_size = pal ? 144000 : 120000;
1759     }
1760
1761     sc->index = ul_index + 16;
1762     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
1763
1764     if(s->oformat == &ff_mxf_opatom_muxer) {
1765         mxf->edit_unit_byte_count = frame_size;
1766         return 1;
1767     }
1768
1769     mxf->edit_unit_byte_count = KAG_SIZE;
1770     for (i = 0; i < s->nb_streams; i++) {
1771         AVStream *st = s->streams[i];
1772         MXFStreamContext *sc = st->priv_data;
1773         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1774             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1775             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1776         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1777             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1778             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1779         }
1780     }
1781
1782     return 1;
1783 }
1784
1785 static const struct {
1786     UID uid;
1787     int frame_size;
1788     int profile;
1789     uint8_t interlaced;
1790 } mxf_h264_codec_uls[] = {
1791     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra
1792     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60
1793     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50
1794     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30
1795     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25
1796     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60
1797     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50
1798     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra
1799     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60
1800     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50
1801     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30
1802     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25
1803     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60
1804     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50
1805 };
1806
1807 static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
1808                                 AVPacket *pkt, MXFIndexEntry *e)
1809 {
1810     MXFContext *mxf = s->priv_data;
1811     MXFStreamContext *sc = st->priv_data;
1812     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);
1813     const uint8_t *buf = pkt->data;
1814     const uint8_t *buf_end = pkt->data + pkt->size;
1815     uint32_t state = -1;
1816     int extra_size = 512; // support AVC Intra files without SPS/PPS header
1817     int i, frame_size;
1818     uint8_t uid_found;
1819
1820     if (pkt->size > extra_size)
1821         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header
1822
1823     for (;;) {
1824         buf = avpriv_find_start_code(buf, buf_end, &state);
1825         if (buf >= buf_end)
1826             break;
1827         --buf;
1828         switch (state & 0x1f) {
1829         case NAL_SPS:
1830             st->codec->profile = buf[1];
1831             e->flags |= 0x40;
1832             break;
1833         case NAL_PPS:
1834             if (e->flags & 0x40) { // sequence header present
1835                 e->flags |= 0x80; // random access
1836                 extra_size = 0;
1837                 buf = buf_end;
1838             }
1839             break;
1840         default:
1841             break;
1842         }
1843     }
1844
1845     if (mxf->header_written)
1846         return 1;
1847
1848     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD
1849     sc->component_depth = 10; // AVC Intra is always 10 Bit
1850     sc->interlaced = st->codec->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;
1851     if (sc->interlaced)
1852         sc->field_dominance = 1; // top field first is mandatory for AVC Intra
1853
1854     uid_found = 0;
1855     frame_size = pkt->size + extra_size;
1856     for (i = 0; i < mxf_h264_num_codec_uls; i++) {
1857         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {
1858             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1859             return 1;
1860         } else if (st->codec->profile == mxf_h264_codec_uls[i].profile) {
1861             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1862             uid_found = 1;
1863         }
1864     }
1865
1866     if (!uid_found) {
1867         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");
1868         return 0;
1869     }
1870
1871     return 1;
1872 }
1873
1874 static const UID mxf_mpeg2_codec_uls[] = {
1875     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1876     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1877     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1878     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1879     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1880     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1881     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1882     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1883     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
1884     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
1885 };
1886
1887 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1888 {
1889     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
1890
1891     if (avctx->profile == 4) { // Main
1892         if (avctx->level == 8) // Main
1893             return &mxf_mpeg2_codec_uls[0+long_gop];
1894         else if (avctx->level == 4) // High
1895             return &mxf_mpeg2_codec_uls[4+long_gop];
1896         else if (avctx->level == 6) // High 14
1897             return &mxf_mpeg2_codec_uls[8+long_gop];
1898     } else if (avctx->profile == 0) { // 422
1899         if (avctx->level == 5) // Main
1900             return &mxf_mpeg2_codec_uls[2+long_gop];
1901         else if (avctx->level == 2) // High
1902             return &mxf_mpeg2_codec_uls[6+long_gop];
1903     }
1904     return NULL;
1905 }
1906
1907 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
1908                                  AVPacket *pkt, MXFIndexEntry *e)
1909 {
1910     MXFStreamContext *sc = st->priv_data;
1911     uint32_t c = -1;
1912     int i;
1913
1914     for(i = 0; i < pkt->size - 4; i++) {
1915         c = (c<<8) + pkt->data[i];
1916         if (c == 0x1b5) {
1917             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1918                 st->codec->profile = pkt->data[i+1] & 0x07;
1919                 st->codec->level   = pkt->data[i+2] >> 4;
1920             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1921                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1922                 if (sc->interlaced)
1923                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
1924                 break;
1925             }
1926         } else if (c == 0x1b8) { // gop
1927             if (pkt->data[i+4]>>6 & 0x01) { // closed
1928                 sc->closed_gop = 1;
1929                 if (e->flags & 0x40) // sequence header present
1930                     e->flags |= 0x80; // random access
1931             }
1932         } else if (c == 0x1b3) { // seq
1933             e->flags |= 0x40;
1934             switch ((pkt->data[i+4]>>4) & 0xf) {
1935             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1936             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1937             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1938             default:
1939                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1940                           st->codec->width, st->codec->height, 1024*1024);
1941             }
1942         } else if (c == 0x100) { // pic
1943             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1944             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
1945             if (pict_type == 2) { // P frame
1946                 e->flags |= 0x22;
1947                 sc->closed_gop = 0; // reset closed gop, don't matter anymore
1948             } else if (pict_type == 3) { // B frame
1949                 if (sc->closed_gop)
1950                     e->flags |= 0x13; // only backward prediction
1951                 else
1952                     e->flags |= 0x33;
1953                 sc->temporal_reordering = -1;
1954             } else if (!pict_type) {
1955                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1956                 return 0;
1957             }
1958         }
1959     }
1960     if (s->oformat != &ff_mxf_d10_muxer)
1961         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1962     return !!sc->codec_ul;
1963 }
1964
1965 static uint64_t mxf_parse_timestamp(time_t timestamp)
1966 {
1967     struct tm tmbuf;
1968     struct tm *time = gmtime_r(&timestamp, &tmbuf);
1969     if (!time)
1970         return 0;
1971     return (uint64_t)(time->tm_year+1900) << 48 |
1972            (uint64_t)(time->tm_mon+1)     << 40 |
1973            (uint64_t) time->tm_mday       << 32 |
1974                       time->tm_hour       << 24 |
1975                       time->tm_min        << 16 |
1976                       time->tm_sec        << 8;
1977 }
1978
1979 static void mxf_gen_umid(AVFormatContext *s)
1980 {
1981     MXFContext *mxf = s->priv_data;
1982     uint32_t seed = av_get_random_seed();
1983     uint64_t umid = seed + 0x5294713400000000LL;
1984
1985     AV_WB64(mxf->umid  , umid);
1986     AV_WB64(mxf->umid+8, umid>>8);
1987
1988     mxf->instance_number = seed & 0xFFFFFF;
1989 }
1990
1991 static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)
1992 {
1993     MXFContext *mxf = s->priv_data;
1994     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
1995     if (!tcr)
1996         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
1997
1998     if (tcr)
1999         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
2000     else
2001         return av_timecode_init(&mxf->tc, rate, 0, 0, s);
2002 }
2003
2004 static int mxf_write_header(AVFormatContext *s)
2005 {
2006     MXFContext *mxf = s->priv_data;
2007     int i, ret;
2008     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
2009     const MXFSamplesPerFrame *spf = NULL;
2010     AVDictionaryEntry *t;
2011     int64_t timestamp = 0;
2012
2013     if (!s->nb_streams)
2014         return -1;
2015
2016     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1){
2017         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
2018         return -1;
2019     }
2020
2021     for (i = 0; i < s->nb_streams; i++) {
2022         AVStream *st = s->streams[i];
2023         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
2024         if (!sc)
2025             return AVERROR(ENOMEM);
2026         st->priv_data = sc;
2027
2028         if (((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
2029             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
2030             return -1;
2031         }
2032
2033         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2034             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codec->pix_fmt);
2035             // TODO: should be avg_frame_rate
2036             AVRational rate, tbc = st->time_base;
2037             // Default component depth to 8
2038             sc->component_depth = 8;
2039             sc->h_chroma_sub_sample = 2;
2040
2041             if (pix_desc) {
2042                 sc->component_depth     = pix_desc->comp[0].depth_minus1 + 1;
2043                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
2044             }
2045
2046             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2047             spf = ff_mxf_get_samples_per_frame(s, tbc);
2048             if (!spf) {
2049                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
2050                        tbc.den, tbc.num);
2051                 return AVERROR(EINVAL);
2052             }
2053             mxf->time_base = spf->time_base;
2054             rate = av_inv_q(mxf->time_base);
2055             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
2056             if((ret = mxf_init_timecode(s, st, rate)) < 0)
2057                 return ret;
2058
2059             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;
2060             if (s->oformat == &ff_mxf_d10_muxer) {
2061                 if (sc->video_bit_rate == 50000000) {
2062                     if (mxf->time_base.den == 25) sc->index = 3;
2063                     else                          sc->index = 5;
2064                 } else if (sc->video_bit_rate == 40000000) {
2065                     if (mxf->time_base.den == 25) sc->index = 7;
2066                     else                          sc->index = 9;
2067                 } else if (sc->video_bit_rate == 30000000) {
2068                     if (mxf->time_base.den == 25) sc->index = 11;
2069                     else                          sc->index = 13;
2070                 } else {
2071                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
2072                     return -1;
2073                 }
2074
2075                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
2076                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *
2077                     mxf->time_base.num / (8*mxf->time_base.den);
2078                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2079                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;
2080                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2081             }
2082         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2083             if (st->codec->sample_rate != 48000) {
2084                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
2085                 return -1;
2086             }
2087             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
2088             if (s->oformat == &ff_mxf_d10_muxer) {
2089                 if (st->index != 1) {
2090                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
2091                     return -1;
2092                 }
2093                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
2094                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
2095                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
2096                 }
2097                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
2098             } else if (s->oformat == &ff_mxf_opatom_muxer) {
2099                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
2100
2101                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
2102                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
2103                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
2104                     return AVERROR_PATCHWELCOME;
2105                 }
2106                 if (st->codec->channels != 1) {
2107                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
2108                     return AVERROR(EINVAL);
2109                 }
2110
2111                 spf = ff_mxf_get_samples_per_frame(s, tbc);
2112                 if (!spf){
2113                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);
2114                     return AVERROR(EINVAL);
2115                 }
2116
2117                 mxf->time_base = st->time_base;
2118                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)
2119                     return ret;
2120
2121                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2122                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
2123                 sc->index = 2;
2124             } else {
2125                 mxf->slice_count = 1;
2126             }
2127         }
2128
2129         if (!sc->index) {
2130             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
2131             if (sc->index == -1) {
2132                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
2133                        "codec not currently supported in container\n", i);
2134                 return -1;
2135             }
2136         }
2137
2138         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
2139
2140         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
2141         sc->track_essence_element_key[15] = present[sc->index];
2142         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
2143
2144         if (!present[sc->index])
2145             mxf->essence_container_count++;
2146         present[sc->index]++;
2147     }
2148
2149     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
2150         mxf->essence_container_count = 1;
2151     }
2152
2153     if (!(s->flags & AVFMT_FLAG_BITEXACT))
2154         mxf_gen_umid(s);
2155
2156     for (i = 0; i < s->nb_streams; i++) {
2157         MXFStreamContext *sc = s->streams[i]->priv_data;
2158         // update element count
2159         sc->track_essence_element_key[13] = present[sc->index];
2160         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
2161             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
2162         else
2163             sc->order = AV_RB32(sc->track_essence_element_key+12);
2164     }
2165
2166     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
2167         timestamp = ff_iso8601_to_unix_time(t->value);
2168     if (timestamp)
2169         mxf->timestamp = mxf_parse_timestamp(timestamp);
2170     mxf->duration = -1;
2171
2172     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
2173     if (!mxf->timecode_track)
2174         return AVERROR(ENOMEM);
2175     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
2176     if (!mxf->timecode_track->priv_data)
2177         return AVERROR(ENOMEM);
2178     mxf->timecode_track->index = -1;
2179
2180     if (!spf)
2181         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
2182
2183     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
2184         return -1;
2185
2186     return 0;
2187 }
2188
2189 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
2190 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 };
2191
2192 static void mxf_write_system_item(AVFormatContext *s)
2193 {
2194     MXFContext *mxf = s->priv_data;
2195     AVIOContext *pb = s->pb;
2196     unsigned frame;
2197     uint32_t time_code;
2198
2199     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2200
2201     // write system metadata pack
2202     avio_write(pb, system_metadata_pack_key, 16);
2203     klv_encode_ber4_length(pb, 57);
2204     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
2205     avio_w8(pb, 0x04); // content package rate
2206     avio_w8(pb, 0x00); // content package type
2207     avio_wb16(pb, 0x00); // channel handle
2208     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow
2209     if (mxf->essence_container_count > 1)
2210         avio_write(pb, multiple_desc_ul, 16);
2211     else {
2212         MXFStreamContext *sc = s->streams[0]->priv_data;
2213         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
2214     }
2215     avio_w8(pb, 0);
2216     avio_wb64(pb, 0);
2217     avio_wb64(pb, 0); // creation date/time stamp
2218
2219     avio_w8(pb, 0x81); // SMPTE 12M time code
2220     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
2221     avio_wb32(pb, time_code);
2222     avio_wb32(pb, 0); // binary group data
2223     avio_wb64(pb, 0);
2224
2225     // write system metadata package set
2226     avio_write(pb, system_metadata_package_set_key, 16);
2227     klv_encode_ber4_length(pb, 35);
2228     avio_w8(pb, 0x83); // UMID
2229     avio_wb16(pb, 0x20);
2230     mxf_write_umid(s, 1);
2231 }
2232
2233 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2234 {
2235     MXFContext *mxf = s->priv_data;
2236     AVIOContext *pb = s->pb;
2237     MXFStreamContext *sc = st->priv_data;
2238     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /
2239         (8*mxf->time_base.den); // frame size
2240     int pad;
2241
2242     packet_size += 16 + 4;
2243     packet_size += klv_fill_size(packet_size);
2244
2245     klv_encode_ber4_length(pb, pkt->size);
2246     avio_write(pb, pkt->data, pkt->size);
2247
2248     // ensure CBR muxing by padding to correct video frame size
2249     pad = packet_size - pkt->size - 16 - 4;
2250     if (pad > 20) {
2251         avio_write(s->pb, klv_fill_key, 16);
2252         pad -= 16 + 4;
2253         klv_encode_ber4_length(s->pb, pad);
2254         ffio_fill(s->pb, 0, pad);
2255         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
2256     } else {
2257         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
2258         ffio_fill(s->pb, 0, pad);
2259     }
2260 }
2261
2262 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2263 {
2264     MXFContext *mxf = s->priv_data;
2265     AVIOContext *pb = s->pb;
2266     int frame_size = pkt->size / st->codec->block_align;
2267     uint8_t *samples = pkt->data;
2268     uint8_t *end = pkt->data + pkt->size;
2269     int i;
2270
2271     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
2272
2273     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
2274     avio_wl16(pb, frame_size);
2275     avio_w8(pb, (1<<st->codec->channels)-1);
2276
2277     while (samples < end) {
2278         for (i = 0; i < st->codec->channels; i++) {
2279             uint32_t sample;
2280             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {
2281                 sample = AV_RL24(samples)<< 4;
2282                 samples += 3;
2283             } else {
2284                 sample = AV_RL16(samples)<<12;
2285                 samples += 2;
2286             }
2287             avio_wl32(pb, sample | i);
2288         }
2289         for (; i < 8; i++)
2290             avio_wl32(pb, i);
2291     }
2292 }
2293
2294 static int mxf_write_opatom_body_partition(AVFormatContext *s)
2295 {
2296     MXFContext *mxf = s->priv_data;
2297     AVIOContext *pb = s->pb;
2298     AVStream *st = s->streams[0];
2299     MXFStreamContext *sc = st->priv_data;
2300     const uint8_t *key = NULL;
2301
2302     int err;
2303
2304     if (!mxf->header_written)
2305         key = body_partition_key;
2306
2307     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)
2308         return err;
2309     mxf_write_klv_fill(s);
2310     avio_write(pb, sc->track_essence_element_key, 16);
2311     klv_encode_ber9_length(pb, mxf->body_offset);
2312     return 0;
2313 }
2314
2315 static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)
2316 {
2317     MXFContext *mxf = s->priv_data;
2318     AVIOContext *pb = s->pb;
2319
2320     int err;
2321
2322     if (!mxf->header_written) {
2323         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2324             return err;
2325         mxf_write_klv_fill(s);
2326
2327         if ((err = mxf_write_opatom_body_partition(s)) < 0)
2328             return err;
2329         mxf->header_written = 1;
2330     }
2331
2332     if (!mxf->edit_unit_byte_count) {
2333         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2334         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;
2335         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;
2336     }
2337     mxf->edit_units_count++;
2338     avio_write(pb, pkt->data, pkt->size);
2339     mxf->body_offset += pkt->size;
2340     avio_flush(pb);
2341
2342     return 0;
2343 }
2344
2345 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
2346 {
2347     MXFContext *mxf = s->priv_data;
2348     AVIOContext *pb = s->pb;
2349     AVStream *st = s->streams[pkt->stream_index];
2350     MXFStreamContext *sc = st->priv_data;
2351     MXFIndexEntry ie = {0};
2352     int err;
2353
2354     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
2355         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
2356                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
2357             mxf->edit_units_count = 0;
2358             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
2359             return err;
2360         }
2361     }
2362
2363     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2364         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
2365             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
2366             return -1;
2367         }
2368     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {
2369         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
2370             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
2371             return -1;
2372         }
2373     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {
2374         if (!mxf_parse_dv_frame(s, st, pkt)) {
2375             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
2376             return -1;
2377         }
2378     } else if (st->codec->codec_id == AV_CODEC_ID_H264) {
2379         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {
2380             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");
2381             return -1;
2382         }
2383     }
2384
2385     if (s->oformat == &ff_mxf_opatom_muxer)
2386         return mxf_write_opatom_packet(s, pkt, &ie);
2387
2388     if (!mxf->header_written) {
2389         if (mxf->edit_unit_byte_count) {
2390             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
2391                 return err;
2392             mxf_write_klv_fill(s);
2393             mxf_write_index_table_segment(s);
2394         } else {
2395             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2396                 return err;
2397         }
2398         mxf->header_written = 1;
2399     }
2400
2401     if (st->index == 0) {
2402         if (!mxf->edit_unit_byte_count &&
2403             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
2404             !(ie.flags & 0x33)) { // I frame, Gop start
2405             mxf_write_klv_fill(s);
2406             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
2407                 return err;
2408             mxf_write_klv_fill(s);
2409             mxf_write_index_table_segment(s);
2410         }
2411
2412         mxf_write_klv_fill(s);
2413         mxf_write_system_item(s);
2414
2415         if (!mxf->edit_unit_byte_count) {
2416             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2417             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2418             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2419             mxf->body_offset += KAG_SIZE; // size of system element
2420         }
2421         mxf->edit_units_count++;
2422     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2423         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2424             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2425     }
2426
2427     mxf_write_klv_fill(s);
2428     avio_write(pb, sc->track_essence_element_key, 16); // write key
2429     if (s->oformat == &ff_mxf_d10_muxer) {
2430         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2431             mxf_write_d10_video_packet(s, st, pkt);
2432         else
2433             mxf_write_d10_audio_packet(s, st, pkt);
2434     } else {
2435         klv_encode_ber4_length(pb, pkt->size); // write length
2436         avio_write(pb, pkt->data, pkt->size);
2437         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2438     }
2439
2440     avio_flush(pb);
2441
2442     return 0;
2443 }
2444
2445 static void mxf_write_random_index_pack(AVFormatContext *s)
2446 {
2447     MXFContext *mxf = s->priv_data;
2448     AVIOContext *pb = s->pb;
2449     uint64_t pos = avio_tell(pb);
2450     int i;
2451
2452     avio_write(pb, random_index_pack_key, 16);
2453     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
2454
2455     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
2456         avio_wb32(pb, 1); // BodySID of header partition
2457     else
2458         avio_wb32(pb, 0);
2459     avio_wb64(pb, 0); // offset of header partition
2460
2461     for (i = 0; i < mxf->body_partitions_count; i++) {
2462         avio_wb32(pb, 1); // BodySID
2463         avio_wb64(pb, mxf->body_partition_offset[i]);
2464     }
2465
2466     avio_wb32(pb, 0); // BodySID of footer partition
2467     avio_wb64(pb, mxf->footer_partition_offset);
2468
2469     avio_wb32(pb, avio_tell(pb) - pos + 4);
2470 }
2471
2472 static int mxf_write_footer(AVFormatContext *s)
2473 {
2474     MXFContext *mxf = s->priv_data;
2475     AVIOContext *pb = s->pb;
2476     int err = 0;
2477
2478     if (!mxf->header_written ||
2479         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
2480         /* reason could be invalid options/not supported codec/out of memory */
2481         err = AVERROR_UNKNOWN;
2482         goto end;
2483     }
2484
2485     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2486
2487     mxf_write_klv_fill(s);
2488     mxf->footer_partition_offset = avio_tell(pb);
2489     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
2490         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
2491             goto end;
2492     } else {
2493         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
2494             goto end;
2495         mxf_write_klv_fill(s);
2496         mxf_write_index_table_segment(s);
2497     }
2498
2499     mxf_write_klv_fill(s);
2500     mxf_write_random_index_pack(s);
2501
2502     if (s->pb->seekable) {
2503         if (s->oformat == &ff_mxf_opatom_muxer){
2504             /* rewrite body partition to update lengths */
2505             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
2506             if ((err = mxf_write_opatom_body_partition(s)) < 0)
2507                 goto end;
2508         }
2509
2510         avio_seek(pb, 0, SEEK_SET);
2511         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
2512             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
2513                 goto end;
2514             mxf_write_klv_fill(s);
2515             mxf_write_index_table_segment(s);
2516         } else {
2517             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
2518                 goto end;
2519         }
2520     }
2521
2522 end:
2523     ff_audio_interleave_close(s);
2524
2525     av_freep(&mxf->index_entries);
2526     av_freep(&mxf->body_partition_offset);
2527     av_freep(&mxf->timecode_track->priv_data);
2528     av_freep(&mxf->timecode_track);
2529
2530     mxf_free(s);
2531
2532     return err < 0 ? err : 0;
2533 }
2534
2535 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2536 {
2537     int i, stream_count = 0;
2538
2539     for (i = 0; i < s->nb_streams; i++)
2540         stream_count += !!s->streams[i]->last_in_packet_buffer;
2541
2542     if (stream_count && (s->nb_streams == stream_count || flush)) {
2543         AVPacketList *pktl = s->internal->packet_buffer;
2544         if (s->nb_streams != stream_count) {
2545             AVPacketList *last = NULL;
2546             // find last packet in edit unit
2547             while (pktl) {
2548                 if (!stream_count || pktl->pkt.stream_index == 0)
2549                     break;
2550                 last = pktl;
2551                 pktl = pktl->next;
2552                 stream_count--;
2553             }
2554             // purge packet queue
2555             while (pktl) {
2556                 AVPacketList *next = pktl->next;
2557
2558                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2559                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2560                 av_free_packet(&pktl->pkt);
2561                 av_freep(&pktl);
2562                 pktl = next;
2563             }
2564             if (last)
2565                 last->next = NULL;
2566             else {
2567                 s->internal->packet_buffer = NULL;
2568                 s->internal->packet_buffer_end= NULL;
2569                 goto out;
2570             }
2571             pktl = s->internal->packet_buffer;
2572         }
2573
2574         *out = pktl->pkt;
2575         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
2576         s->internal->packet_buffer = pktl->next;
2577         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2578             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2579         if(!s->internal->packet_buffer)
2580             s->internal->packet_buffer_end= NULL;
2581         av_freep(&pktl);
2582         return 1;
2583     } else {
2584     out:
2585         av_init_packet(out);
2586         return 0;
2587     }
2588 }
2589
2590 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2591 {
2592     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
2593     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
2594
2595     return next->dts > pkt->dts ||
2596         (next->dts == pkt->dts && sc->order < sc2->order);
2597 }
2598
2599 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2600 {
2601     return ff_audio_rechunk_interleave(s, out, pkt, flush,
2602                                mxf_interleave_get_packet, mxf_compare_timestamps);
2603 }
2604
2605 static const AVOption d10_options[] = {
2606     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
2607       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
2608     { NULL },
2609 };
2610
2611 static const AVClass mxf_d10_muxer_class = {
2612     .class_name     = "MXF-D10 muxer",
2613     .item_name      = av_default_item_name,
2614     .option         = d10_options,
2615     .version        = LIBAVUTIL_VERSION_INT,
2616 };
2617
2618 static const AVOption opatom_options[] = {
2619     { "mxf_audio_edit_rate", "Audio edit rate for timecode",
2620         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2621     { NULL },
2622 };
2623
2624 static const AVClass mxf_opatom_muxer_class = {
2625     .class_name     = "MXF-OPAtom muxer",
2626     .item_name      = av_default_item_name,
2627     .option         = opatom_options,
2628     .version        = LIBAVUTIL_VERSION_INT,
2629 };
2630
2631 AVOutputFormat ff_mxf_muxer = {
2632     .name              = "mxf",
2633     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
2634     .mime_type         = "application/mxf",
2635     .extensions        = "mxf",
2636     .priv_data_size    = sizeof(MXFContext),
2637     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2638     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2639     .write_header      = mxf_write_header,
2640     .write_packet      = mxf_write_packet,
2641     .write_trailer     = mxf_write_footer,
2642     .flags             = AVFMT_NOTIMESTAMPS,
2643     .interleave_packet = mxf_interleave,
2644 };
2645
2646 AVOutputFormat ff_mxf_d10_muxer = {
2647     .name              = "mxf_d10",
2648     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
2649     .mime_type         = "application/mxf",
2650     .priv_data_size    = sizeof(MXFContext),
2651     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2652     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2653     .write_header      = mxf_write_header,
2654     .write_packet      = mxf_write_packet,
2655     .write_trailer     = mxf_write_footer,
2656     .flags             = AVFMT_NOTIMESTAMPS,
2657     .interleave_packet = mxf_interleave,
2658     .priv_class        = &mxf_d10_muxer_class,
2659 };
2660
2661 AVOutputFormat ff_mxf_opatom_muxer = {
2662     .name              = "mxf_opatom",
2663     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
2664     .mime_type         = "application/mxf",
2665     .extensions        = "mxf",
2666     .priv_data_size    = sizeof(MXFContext),
2667     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2668     .video_codec       = AV_CODEC_ID_DNXHD,
2669     .write_header      = mxf_write_header,
2670     .write_packet      = mxf_write_packet,
2671     .write_trailer     = mxf_write_footer,
2672     .flags             = AVFMT_NOTIMESTAMPS,
2673     .interleave_packet = mxf_interleave,
2674     .priv_class        = &mxf_opatom_muxer_class,
2675 };