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 color_siting;
  83     int signal_standard;
  84     int h_chroma_sub_sample;
  85     int temporal_reordering;
  86     AVRational aspect_ratio; ///< display aspect ratio
  87     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
  88     int video_bit_rate;
  89 } MXFStreamContext;
  90
  91 typedef struct MXFContainerEssenceEntry {
  92     UID container_ul;
  93     UID element_ul;
  94     UID codec_ul;
  95     void (*write_desc)(AVFormatContext *, AVStream *);
  96 } MXFContainerEssenceEntry;
  97
  98 static const struct {
  99     enum AVCodecID id;
 100     int index;
 101 } mxf_essence_mappings[] = {
 102     { AV_CODEC_ID_MPEG2VIDEO, 0 },
 103     { AV_CODEC_ID_PCM_S24LE,  1 },
 104     { AV_CODEC_ID_PCM_S16LE,  1 },
 105     { AV_CODEC_ID_DVVIDEO,   15 },
 106     { AV_CODEC_ID_DNXHD,     24 },
 107     { AV_CODEC_ID_JPEG2000,  34 },
 108     { AV_CODEC_ID_H264,      35 },
 109     { AV_CODEC_ID_NONE }
 110 };
 111
 112 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
 113 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
 114 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
 115 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
 116 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
 117
 118 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
 119     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 120       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 121       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 122       mxf_write_mpegvideo_desc },
 123     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 124       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 125       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 126       mxf_write_aes3_desc },
 127     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 128       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 129       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 130       mxf_write_wav_desc },
 131     // D-10 625/50 PAL 50mb/s
 132     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 133       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 134       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 135       mxf_write_cdci_desc },
 136     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 137       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 138       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 139       mxf_write_generic_sound_desc },
 140     // D-10 525/60 NTSC 50mb/s
 141     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 142       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 143       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 144       mxf_write_cdci_desc },
 145     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 146       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 147       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 148       mxf_write_generic_sound_desc },
 149     // D-10 625/50 PAL 40mb/s
 150     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 151       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 152       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 153       mxf_write_cdci_desc },
 154     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 155       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 156       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 157       mxf_write_generic_sound_desc },
 158     // D-10 525/60 NTSC 40mb/s
 159     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 160       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 161       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 162       mxf_write_cdci_desc },
 163     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 164       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 165       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 166       mxf_write_generic_sound_desc },
 167     // D-10 625/50 PAL 30mb/s
 168     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 169       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 170       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 171       mxf_write_cdci_desc },
 172     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 173       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 174       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 175       mxf_write_generic_sound_desc },
 176     // D-10 525/60 NTSC 30mb/s
 177     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 178       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 179       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 180       mxf_write_cdci_desc },
 181     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 182       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 183       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 184       mxf_write_generic_sound_desc },
 185     // DV Unknown
 186     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
 187       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 188       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
 189       mxf_write_cdci_desc },
 190     // DV25 525/60
 191     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },
 192       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 193       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 194       mxf_write_cdci_desc },
 195     // DV25 625/50
 196     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },
 197       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 198       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },
 199       mxf_write_cdci_desc },
 200     // DV50 525/60
 201     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },
 202       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 203       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },
 204       mxf_write_cdci_desc },
 205     // DV50 625/50
 206     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },
 207       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 208       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },
 209       mxf_write_cdci_desc },
 210     // DV100 1080/60
 211     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },
 212       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 213       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },
 214       mxf_write_cdci_desc },
 215     // DV100 1080/50
 216     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },
 217       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 218       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },
 219       mxf_write_cdci_desc },
 220     // DV100 720/60
 221     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },
 222       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 223       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },
 224       mxf_write_cdci_desc },
 225     // DV100 720/50
 226     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },
 227       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 228       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },
 229       mxf_write_cdci_desc },
 230     // DNxHD 1080p 10bit high
 231     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 232       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 233       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
 234       mxf_write_cdci_desc },
 235     // DNxHD 1080p 8bit medium
 236     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 237       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 238       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },
 239       mxf_write_cdci_desc },
 240     // DNxHD 1080p 8bit high
 241     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 242       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 243       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },
 244       mxf_write_cdci_desc },
 245     // DNxHD 1080i 10bit high
 246     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 247       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 248       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },
 249       mxf_write_cdci_desc },
 250     // DNxHD 1080i 8bit medium
 251     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 252       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 253       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },
 254       mxf_write_cdci_desc },
 255     // DNxHD 1080i 8bit high
 256     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 257       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 258       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },
 259       mxf_write_cdci_desc },
 260     // DNxHD 720p 10bit
 261     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 262       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 263       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },
 264       mxf_write_cdci_desc },
 265     // DNxHD 720p 8bit high
 266     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 267       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 268       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },
 269       mxf_write_cdci_desc },
 270     // DNxHD 720p 8bit medium
 271     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 272       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 273       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },
 274       mxf_write_cdci_desc },
 275     // DNxHD 720p 8bit low
 276     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 277       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 278       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },
 279       mxf_write_cdci_desc },
 280     // JPEG2000
 281     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },
 282       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },
 283       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },
 284       mxf_write_cdci_desc },
 285     // H.264
 286     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },
 287       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 288       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 289       mxf_write_mpegvideo_desc },
 290     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 291       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 292       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 293       NULL },
 294 };
 295
 296 typedef struct MXFContext {
 297     AVClass *av_class;
 298     int64_t footer_partition_offset;
 299     int essence_container_count;
 300     AVRational time_base;
 301     int header_written;
 302     MXFIndexEntry *index_entries;
 303     unsigned edit_units_count;
 304     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 305     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 306     int last_indexed_edit_unit;
 307     uint64_t *body_partition_offset;
 308     unsigned body_partitions_count;
 309     int last_key_index;  ///< index of last key frame
 310     uint64_t duration;
 311     AVTimecode tc;       ///< timecode context
 312     AVStream *timecode_track;
 313     int timecode_base;       ///< rounded time code base (25 or 30)
 314     int edit_unit_byte_count; ///< fixed edit unit byte count
 315     uint64_t body_offset;
 316     uint32_t instance_number;
 317     uint8_t umid[16];        ///< unique material identifier
 318     int channel_count;
 319     uint32_t tagged_value_count;
 320     AVRational audio_edit_rate;
 321 } MXFContext;
 322
 323 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 324 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 325
 326 /**
 327  * complete key for operation pattern, partitions, and primer pack
 328  */
 329 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 330 static const uint8_t opatom_ul[]                   = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x02,0x01,0x10,0x03,0x00,0x00 };
 331 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 332 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 333 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 334 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 335 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
 336 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
 337 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 338 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 339
 340 /**
 341  * partial key for header metadata
 342  */
 343 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 344 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 345
 346 /**
 347  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 348  */
 349 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 350     // preface set
 351     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 352     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 353     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 354     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 355     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 356     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 357     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 358     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 359     // Identification
 360     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 361     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 362     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 363     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 364     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 365     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 366     // Content Storage
 367     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 368     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 369     // Essence Container Data
 370     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 371     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 372     // Package
 373     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 374     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 375     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 376     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */
 377     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 378     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */
 379     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 380     // Track
 381     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 382     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 383     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 384     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 385     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 386     // Sequence
 387     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 388     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 389     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 390     // Source Clip
 391     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 392     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 393     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 394     // Timecode Component
 395     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 396     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 397     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 398     // Tagged Value
 399     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */
 400     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */
 401     // File Descriptor
 402     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 403     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 404     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 405     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */
 406     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 407     // Generic Picture Essence Descriptor
 408     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 409     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 410     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 411     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 412     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 413     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 414     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */
 415     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 416     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 417     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 418     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */
 419     // CDCI Picture Essence Descriptor
 420     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 421     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 422     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */
 423     // Generic Sound Essence Descriptor
 424     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 425     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 426     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 427     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 428     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 429     // Index Table Segment
 430     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 431     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 432     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 433     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 434     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 435     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 436     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 437     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 438     // MPEG video Descriptor
 439     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 440     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 441     // Wave Audio Essence Descriptor
 442     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 443     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 444 };
 445
 446 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 447 {
 448     avio_write(pb, uuid_base, 12);
 449     avio_wb16(pb, type);
 450     avio_wb16(pb, value);
 451 }
 452
 453 static void mxf_write_umid(AVFormatContext *s, int type)
 454 {
 455     MXFContext *mxf = s->priv_data;
 456     avio_write(s->pb, umid_ul, 13);
 457     avio_wb24(s->pb, mxf->instance_number);
 458     avio_write(s->pb, mxf->umid, 15);
 459     avio_w8(s->pb, type);
 460 }
 461
 462 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 463 {
 464     avio_wb32(pb, ref_count);
 465     avio_wb32(pb, 16);
 466 }
 467
 468 static int klv_ber_length(uint64_t len)
 469 {
 470     if (len < 128)
 471         return 1;
 472     else
 473         return (av_log2(len) >> 3) + 2;
 474 }
 475
 476 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 477 {
 478     // Determine the best BER size
 479     int size;
 480     if (len < 128) {
 481         //short form
 482         avio_w8(pb, len);
 483         return 1;
 484     }
 485
 486     size = (av_log2(len) >> 3) + 1;
 487
 488     // long form
 489     avio_w8(pb, 0x80 + size);
 490     while(size) {
 491         size--;
 492         avio_w8(pb, len >> 8 * size & 0xff);
 493     }
 494     return 0;
 495 }
 496
 497 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 498 {
 499     avio_w8(pb, 0x80 + 3);
 500     avio_wb24(pb, len);
 501 }
 502
 503 static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len)
 504 {
 505     avio_w8(pb, 0x80 + 8);
 506     avio_wb64(pb, len);
 507 }
 508
 509 /*
 510  * Get essence container ul index
 511  */
 512 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 513 {
 514     int i;
 515     for (i = 0; mxf_essence_mappings[i].id; i++)
 516         if (mxf_essence_mappings[i].id == id)
 517             return mxf_essence_mappings[i].index;
 518     return -1;
 519 }
 520
 521 static void mxf_write_primer_pack(AVFormatContext *s)
 522 {
 523     AVIOContext *pb = s->pb;
 524     int local_tag_number, i = 0;
 525
 526     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 527
 528     avio_write(pb, primer_pack_key, 16);
 529     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 530
 531     avio_wb32(pb, local_tag_number); // local_tag num
 532     avio_wb32(pb, 18); // item size, always 18 according to the specs
 533
 534     for (i = 0; i < local_tag_number; i++) {
 535         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 536         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 537     }
 538 }
 539
 540 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
 541 {
 542     avio_wb16(pb, tag);
 543     avio_wb16(pb, size);
 544 }
 545
 546 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 547 {
 548     avio_write(pb, header_metadata_key, 13);
 549     avio_wb24(pb, value);
 550 }
 551
 552 static void mxf_free(AVFormatContext *s)
 553 {
 554     int i;
 555
 556     for (i = 0; i < s->nb_streams; i++) {
 557         AVStream *st = s->streams[i];
 558         av_freep(&st->priv_data);
 559     }
 560 }
 561
 562 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 563 {
 564     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 565     while (uls->uid[0]) {
 566         if (type == uls->id)
 567             break;
 568         uls++;
 569     }
 570     return uls;
 571 }
 572
 573 //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors
 574 #define DESCRIPTOR_COUNT(essence_container_count) \
 575     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)
 576
 577 static void mxf_write_essence_container_refs(AVFormatContext *s)
 578 {
 579     MXFContext *c = s->priv_data;
 580     AVIOContext *pb = s->pb;
 581     int i;
 582
 583     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));
 584     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 585     for (i = 0; i < c->essence_container_count; i++) {
 586         MXFStreamContext *sc = s->streams[i]->priv_data;
 587         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 588     }
 589
 590     if (c->essence_container_count > 1)
 591         avio_write(pb, multiple_desc_ul, 16);
 592 }
 593
 594 static void mxf_write_preface(AVFormatContext *s)
 595 {
 596     MXFContext *mxf = s->priv_data;
 597     AVIOContext *pb = s->pb;
 598
 599     mxf_write_metadata_key(pb, 0x012f00);
 600     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 601     klv_encode_ber_length(pb, 130 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 602
 603     // write preface set uid
 604     mxf_write_local_tag(pb, 16, 0x3C0A);
 605     mxf_write_uuid(pb, Preface, 0);
 606     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 607
 608     // last modified date
 609     mxf_write_local_tag(pb, 8, 0x3B02);
 610     avio_wb64(pb, mxf->timestamp);
 611
 612     // write version
 613     mxf_write_local_tag(pb, 2, 0x3B05);
 614     avio_wb16(pb, 258); // v1.2
 615
 616     // write identification_refs
 617     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 618     mxf_write_refs_count(pb, 1);
 619     mxf_write_uuid(pb, Identification, 0);
 620
 621     // write content_storage_refs
 622     mxf_write_local_tag(pb, 16, 0x3B03);
 623     mxf_write_uuid(pb, ContentStorage, 0);
 624
 625     // operational pattern
 626     mxf_write_local_tag(pb, 16, 0x3B09);
 627     if (s->oformat == &ff_mxf_opatom_muxer)
 628         avio_write(pb, opatom_ul, 16);
 629     else
 630         avio_write(pb, op1a_ul, 16);
 631
 632     // write essence_container_refs
 633     mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);
 634     mxf_write_essence_container_refs(s);
 635
 636     // write dm_scheme_refs
 637     mxf_write_local_tag(pb, 8, 0x3B0B);
 638     avio_wb64(pb, 0);
 639 }
 640
 641 /*
 642  * Returns the length of the UTF-16 string, in 16-bit characters, that would result
 643  * from decoding the utf-8 string.
 644  */
 645 static uint64_t mxf_utf16len(const char *utf8_str)
 646 {
 647     const uint8_t *q = utf8_str;
 648     uint64_t size = 0;
 649     while (*q) {
 650         uint32_t ch;
 651         GET_UTF8(ch, *q++, goto invalid;)
 652         if (ch < 0x10000)
 653             size++;
 654         else
 655             size += 2;
 656         continue;
 657 invalid:
 658         av_log(NULL, AV_LOG_ERROR, "Invaid UTF8 sequence in mxf_utf16len\n\n");
 659     }
 660     size += 1;
 661     return size;
 662 }
 663
 664 /*
 665  * Returns the calculated length a local tag containing an utf-8 string as utf-16
 666  */
 667 static int mxf_utf16_local_tag_length(const char *utf8_str)
 668 {
 669     uint64_t size;
 670
 671     if (!utf8_str)
 672         return 0;
 673
 674     size = mxf_utf16len(utf8_str);
 675     if (size >= UINT16_MAX/2) {
 676         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 677         return 0;
 678     }
 679
 680     return 4 + size * 2;
 681 }
 682
 683 /*
 684  * Write a local tag containing an utf-8 string as utf-16
 685  */
 686 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
 687 {
 688     uint64_t size = mxf_utf16len(value);
 689
 690     if (size >= UINT16_MAX/2) {
 691         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 692         return;
 693     }
 694
 695     mxf_write_local_tag(pb, size*2, tag);
 696     avio_put_str16be(pb, value);
 697 }
 698
 699 static void mxf_write_identification(AVFormatContext *s)
 700 {
 701     MXFContext *mxf = s->priv_data;
 702     AVIOContext *pb = s->pb;
 703     const char *company = "FFmpeg";
 704     const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
 705     const char *version;
 706     int length;
 707
 708     mxf_write_metadata_key(pb, 0x013000);
 709     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 710
 711     version = s->flags & AVFMT_FLAG_BITEXACT ?
 712         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 713     length = 72 + mxf_utf16_local_tag_length(company) +
 714                   mxf_utf16_local_tag_length(product) +
 715                   mxf_utf16_local_tag_length(version);
 716     klv_encode_ber_length(pb, length);
 717
 718     // write uid
 719     mxf_write_local_tag(pb, 16, 0x3C0A);
 720     mxf_write_uuid(pb, Identification, 0);
 721     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 722
 723     // write generation uid
 724     mxf_write_local_tag(pb, 16, 0x3C09);
 725     mxf_write_uuid(pb, Identification, 1);
 726     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 727     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 728     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 729
 730     // write product uid
 731     mxf_write_local_tag(pb, 16, 0x3C05);
 732     mxf_write_uuid(pb, Identification, 2);
 733
 734     // modification date
 735     mxf_write_local_tag(pb, 8, 0x3C06);
 736     avio_wb64(pb, mxf->timestamp);
 737 }
 738
 739 static void mxf_write_content_storage(AVFormatContext *s)
 740 {
 741     AVIOContext *pb = s->pb;
 742
 743     mxf_write_metadata_key(pb, 0x011800);
 744     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 745     klv_encode_ber_length(pb, 92);
 746
 747     // write uid
 748     mxf_write_local_tag(pb, 16, 0x3C0A);
 749     mxf_write_uuid(pb, ContentStorage, 0);
 750     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 751
 752     // write package reference
 753     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 754     mxf_write_refs_count(pb, 2);
 755     mxf_write_uuid(pb, MaterialPackage, 0);
 756     mxf_write_uuid(pb, SourcePackage, 0);
 757
 758     // write essence container data
 759     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 760     mxf_write_refs_count(pb, 1);
 761     mxf_write_uuid(pb, EssenceContainerData, 0);
 762 }
 763
 764 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 765 {
 766     MXFContext *mxf = s->priv_data;
 767     AVIOContext *pb = s->pb;
 768     MXFStreamContext *sc = st->priv_data;
 769
 770     mxf_write_metadata_key(pb, 0x013b00);
 771     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 772     klv_encode_ber_length(pb, 80);
 773
 774     // write track uid
 775     mxf_write_local_tag(pb, 16, 0x3C0A);
 776     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 777     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 778
 779     // write track id
 780     mxf_write_local_tag(pb, 4, 0x4801);
 781     avio_wb32(pb, st->index+2);
 782
 783     // write track number
 784     mxf_write_local_tag(pb, 4, 0x4804);
 785     if (type == MaterialPackage)
 786         avio_wb32(pb, 0); // track number of material package is 0
 787     else
 788         avio_write(pb, sc->track_essence_element_key + 12, 4);
 789
 790     mxf_write_local_tag(pb, 8, 0x4B01);
 791
 792     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer){
 793         avio_wb32(pb, mxf->tc.rate.num);
 794         avio_wb32(pb, mxf->tc.rate.den);
 795     } else {
 796         avio_wb32(pb, mxf->time_base.den);
 797         avio_wb32(pb, mxf->time_base.num);
 798     }
 799
 800     // write origin
 801     mxf_write_local_tag(pb, 8, 0x4B02);
 802     avio_wb64(pb, 0);
 803
 804     // write sequence refs
 805     mxf_write_local_tag(pb, 16, 0x4803);
 806     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 807 }
 808
 809 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 };
 810
 811 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 812 {
 813     MXFContext *mxf = s->priv_data;
 814     AVIOContext *pb = s->pb;
 815
 816     // find data define uls
 817     mxf_write_local_tag(pb, 16, 0x0201);
 818     if (st == mxf->timecode_track)
 819         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 820     else {
 821         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 822         avio_write(pb, data_def_ul->uid, 16);
 823     }
 824
 825     // write duration
 826     mxf_write_local_tag(pb, 8, 0x0202);
 827
 828     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
 829         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
 830     } else {
 831         avio_wb64(pb, mxf->duration);
 832     }
 833 }
 834
 835 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 836 {
 837     MXFContext *mxf = s->priv_data;
 838     AVIOContext *pb = s->pb;
 839     enum MXFMetadataSetType component;
 840
 841     mxf_write_metadata_key(pb, 0x010f00);
 842     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 843     klv_encode_ber_length(pb, 80);
 844
 845     mxf_write_local_tag(pb, 16, 0x3C0A);
 846     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 847
 848     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 849     mxf_write_common_fields(s, st);
 850
 851     // write structural component
 852     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 853     mxf_write_refs_count(pb, 1);
 854     if (st == mxf->timecode_track)
 855         component = TimecodeComponent;
 856     else
 857         component = SourceClip;
 858     if (type == SourcePackage)
 859         component += TypeBottom;
 860     mxf_write_uuid(pb, component, st->index);
 861 }
 862
 863 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 864 {
 865     MXFContext *mxf = s->priv_data;
 866     AVIOContext *pb = s->pb;
 867
 868     mxf_write_metadata_key(pb, 0x011400);
 869     klv_encode_ber_length(pb, 75);
 870
 871     // UID
 872     mxf_write_local_tag(pb, 16, 0x3C0A);
 873     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
 874                    TimecodeComponent + TypeBottom, st->index);
 875
 876     mxf_write_common_fields(s, st);
 877
 878     // Start Time Code
 879     mxf_write_local_tag(pb, 8, 0x1501);
 880     avio_wb64(pb, mxf->tc.start);
 881
 882     // Rounded Time Code Base
 883     mxf_write_local_tag(pb, 2, 0x1502);
 884     avio_wb16(pb, mxf->timecode_base);
 885
 886     // Drop Frame
 887     mxf_write_local_tag(pb, 1, 0x1503);
 888     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 889 }
 890
 891 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 892 {
 893     AVIOContext *pb = s->pb;
 894     int i;
 895
 896     mxf_write_metadata_key(pb, 0x011100);
 897     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 898     klv_encode_ber_length(pb, 108);
 899
 900     // write uid
 901     mxf_write_local_tag(pb, 16, 0x3C0A);
 902     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 903
 904     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 905     mxf_write_common_fields(s, st);
 906
 907     // write start_position
 908     mxf_write_local_tag(pb, 8, 0x1201);
 909     avio_wb64(pb, 0);
 910
 911     // write source package uid, end of the reference
 912     mxf_write_local_tag(pb, 32, 0x1101);
 913     if (type == SourcePackage) {
 914         for (i = 0; i < 4; i++)
 915             avio_wb64(pb, 0);
 916     } else
 917         mxf_write_umid(s, 1);
 918
 919     // write source track id
 920     mxf_write_local_tag(pb, 4, 0x1102);
 921     if (type == SourcePackage)
 922         avio_wb32(pb, 0);
 923     else
 924         avio_wb32(pb, st->index+2);
 925 }
 926
 927 static void mxf_write_multi_descriptor(AVFormatContext *s)
 928 {
 929     MXFContext *mxf = s->priv_data;
 930     AVIOContext *pb = s->pb;
 931     const uint8_t *ul;
 932     int i;
 933
 934     mxf_write_metadata_key(pb, 0x014400);
 935     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 936     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
 937
 938     mxf_write_local_tag(pb, 16, 0x3C0A);
 939     mxf_write_uuid(pb, MultipleDescriptor, 0);
 940     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 941
 942     // write sample rate
 943     mxf_write_local_tag(pb, 8, 0x3001);
 944     avio_wb32(pb, mxf->time_base.den);
 945     avio_wb32(pb, mxf->time_base.num);
 946
 947     // write essence container ul
 948     mxf_write_local_tag(pb, 16, 0x3004);
 949     if (mxf->essence_container_count > 1)
 950         ul = multiple_desc_ul;
 951     else {
 952         MXFStreamContext *sc = s->streams[0]->priv_data;
 953         ul = mxf_essence_container_uls[sc->index].container_ul;
 954     }
 955     avio_write(pb, ul, 16);
 956
 957     // write sub descriptor refs
 958     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 959     mxf_write_refs_count(pb, s->nb_streams);
 960     for (i = 0; i < s->nb_streams; i++)
 961         mxf_write_uuid(pb, SubDescriptor, i);
 962 }
 963
 964 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 965 {
 966     MXFContext *mxf = s->priv_data;
 967     MXFStreamContext *sc = st->priv_data;
 968     AVIOContext *pb = s->pb;
 969
 970     avio_write(pb, key, 16);
 971     klv_encode_ber4_length(pb, size+20+8+12+20);
 972
 973     mxf_write_local_tag(pb, 16, 0x3C0A);
 974     mxf_write_uuid(pb, SubDescriptor, st->index);
 975
 976     mxf_write_local_tag(pb, 4, 0x3006);
 977     avio_wb32(pb, st->index+2);
 978
 979     mxf_write_local_tag(pb, 8, 0x3001);
 980     avio_wb32(pb, mxf->time_base.den);
 981     avio_wb32(pb, mxf->time_base.num);
 982
 983     mxf_write_local_tag(pb, 16, 0x3004);
 984     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 985 }
 986
 987 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
 988 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
 989 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
 990 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
 991 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
 992
 993 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 994 {
 995     MXFStreamContext *sc = st->priv_data;
 996     AVIOContext *pb = s->pb;
 997     int stored_height = (st->codec->height+15)/16*16;
 998     int display_height;
 999     int f1, f2;
1000     unsigned desc_size = size+8+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20+5;
1001     if (sc->interlaced && sc->field_dominance)
1002         desc_size += 5;
1003     if (sc->signal_standard)
1004         desc_size += 5;
1005
1006     mxf_write_generic_desc(s, st, key, desc_size);
1007
1008     mxf_write_local_tag(pb, 4, 0x3203);
1009     avio_wb32(pb, st->codec->width);
1010
1011     mxf_write_local_tag(pb, 4, 0x3202);
1012     avio_wb32(pb, stored_height>>sc->interlaced);
1013
1014     mxf_write_local_tag(pb, 4, 0x3209);
1015     avio_wb32(pb, st->codec->width);
1016
1017     if (st->codec->height == 608) // PAL + VBI
1018         display_height = 576;
1019     else if (st->codec->height == 512)  // NTSC + VBI
1020         display_height = 486;
1021     else
1022         display_height = st->codec->height;
1023
1024     mxf_write_local_tag(pb, 4, 0x3208);
1025     avio_wb32(pb, display_height>>sc->interlaced);
1026
1027     // presentation Y offset
1028     mxf_write_local_tag(pb, 4, 0x320B);
1029     avio_wb32(pb, (st->codec->height - display_height)>>sc->interlaced);
1030
1031     // component depth
1032     mxf_write_local_tag(pb, 4, 0x3301);
1033     avio_wb32(pb, sc->component_depth);
1034
1035     // horizontal subsampling
1036     mxf_write_local_tag(pb, 4, 0x3302);
1037     avio_wb32(pb, sc->h_chroma_sub_sample);
1038
1039     // color siting
1040     mxf_write_local_tag(pb, 1, 0x3303);
1041     avio_w8(pb, sc->color_siting);
1042
1043     if (sc->signal_standard) {
1044         mxf_write_local_tag(pb, 1, 0x3215);
1045         avio_w8(pb, sc->signal_standard);
1046     }
1047
1048     // frame layout
1049     mxf_write_local_tag(pb, 1, 0x320C);
1050     avio_w8(pb, sc->interlaced);
1051
1052     // video line map
1053     switch (st->codec->height) {
1054     case  576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
1055     case  608: f1 =  7; f2 = 320; break;
1056     case  480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
1057     case  512: f1 =  7; f2 = 270; break;
1058     case  720: f1 = 26; f2 =   0; break; // progressive
1059     case 1080: f1 = 21; f2 = 584; break;
1060     default:   f1 =  0; f2 =   0; break;
1061     }
1062
1063     if (!sc->interlaced) {
1064         f2  = 0;
1065         f1 *= 2;
1066     }
1067
1068     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
1069     avio_wb32(pb, sc->interlaced ? 2 : 1);
1070     avio_wb32(pb, 4);
1071     avio_wb32(pb, f1);
1072     if (sc->interlaced)
1073         avio_wb32(pb, f2);
1074
1075     mxf_write_local_tag(pb, 8, 0x320E);
1076     avio_wb32(pb, sc->aspect_ratio.num);
1077     avio_wb32(pb, sc->aspect_ratio.den);
1078
1079     mxf_write_local_tag(pb, 16, 0x3201);
1080     avio_write(pb, *sc->codec_ul, 16);
1081
1082     if (sc->interlaced && sc->field_dominance) {
1083         mxf_write_local_tag(pb, 1, 0x3212);
1084         avio_w8(pb, sc->field_dominance);
1085     }
1086
1087 }
1088
1089 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
1090 {
1091     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
1092 }
1093
1094 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1095 {
1096     AVIOContext *pb = s->pb;
1097     MXFStreamContext *sc = st->priv_data;
1098     int profile_and_level = (st->codec->profile<<4) | st->codec->level;
1099
1100     if (st->codec->codec_id != AV_CODEC_ID_H264) {
1101         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
1102
1103         // bit rate
1104         mxf_write_local_tag(pb, 4, 0x8000);
1105         avio_wb32(pb, sc->video_bit_rate);
1106
1107         // profile and level
1108         mxf_write_local_tag(pb, 1, 0x8007);
1109         if (!st->codec->profile)
1110             profile_and_level |= 0x80; // escape bit
1111         avio_w8(pb, profile_and_level);
1112     } else {
1113         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);
1114     }
1115 }
1116
1117 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1118 {
1119     AVIOContext *pb = s->pb;
1120     MXFContext *mxf = s->priv_data;
1121     int show_warnings = !mxf->footer_partition_offset;
1122     int duration_size = 0;
1123
1124     if (s->oformat == &ff_mxf_opatom_muxer)
1125         duration_size = 12;
1126
1127     mxf_write_generic_desc(s, st, key, size+duration_size+5+12+8+8);
1128
1129     if (duration_size > 0){
1130         mxf_write_local_tag(pb, 8, 0x3002);
1131         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
1132     }
1133
1134     // audio locked
1135     mxf_write_local_tag(pb, 1, 0x3D02);
1136     avio_w8(pb, 1);
1137
1138     // write audio sampling rate
1139     mxf_write_local_tag(pb, 8, 0x3D03);
1140     avio_wb32(pb, st->codec->sample_rate);
1141     avio_wb32(pb, 1);
1142
1143     mxf_write_local_tag(pb, 4, 0x3D07);
1144     if (mxf->channel_count == -1) {
1145         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))
1146             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");
1147         avio_wb32(pb, st->codec->channels);
1148     } else if (s->oformat == &ff_mxf_d10_muxer) {
1149         if (show_warnings && (mxf->channel_count < st->codec->channels))
1150             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1151         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1152             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");
1153         avio_wb32(pb, mxf->channel_count);
1154     } else {
1155         if (show_warnings && mxf->channel_count != -1 && s->oformat != &ff_mxf_opatom_muxer)
1156             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");
1157         avio_wb32(pb, st->codec->channels);
1158     }
1159
1160     mxf_write_local_tag(pb, 4, 0x3D01);
1161     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));
1162 }
1163
1164 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1165 {
1166     AVIOContext *pb = s->pb;
1167
1168     mxf_write_generic_sound_common(s, st, key, size+6+8);
1169
1170     mxf_write_local_tag(pb, 2, 0x3D0A);
1171     avio_wb16(pb, st->codec->block_align);
1172
1173     // avg bytes per sec
1174     mxf_write_local_tag(pb, 4, 0x3D09);
1175     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);
1176 }
1177
1178 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1179 {
1180     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
1181 }
1182
1183 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1184 {
1185     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
1186 }
1187
1188 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1189 {
1190     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
1191 }
1192
1193 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 };
1194
1195 static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)
1196 {
1197     MXFContext *mxf = s->priv_data;
1198     AVIOContext *pb = s->pb;
1199     int name_size = mxf_utf16_local_tag_length(name);
1200     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);
1201
1202     if (!name_size || indirect_value_size == 13)
1203         return 1;
1204
1205     mxf_write_metadata_key(pb, 0x013f00);
1206     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);
1207
1208     // write instance UID
1209     mxf_write_local_tag(pb, 16, 0x3C0A);
1210     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);
1211
1212     // write name
1213     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name
1214
1215     // write indirect value
1216     mxf_write_local_tag(pb, indirect_value_size, 0x5003);
1217     avio_write(pb, mxf_indirect_value_utf16le, 17);
1218     avio_put_str16le(pb, value);
1219
1220     mxf->tagged_value_count++;
1221     return 0;
1222 }
1223
1224 static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)
1225 {
1226     MXFContext *mxf = s->priv_data;
1227     AVDictionaryEntry *t = NULL;
1228     int count = 0;
1229
1230     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {
1231         if (mxf->tagged_value_count >= UINT16_MAX) {
1232             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");
1233             return count;
1234         }
1235
1236         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)
1237             count++;
1238     }
1239     return count;
1240 }
1241
1242 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type, const char *package_name)
1243 {
1244     MXFContext *mxf = s->priv_data;
1245     AVIOContext *pb = s->pb;
1246     int i, track_count = s->nb_streams+1;
1247     int name_size = mxf_utf16_local_tag_length(package_name);
1248     int user_comment_count = 0;
1249
1250     if (type == MaterialPackage) {
1251         user_comment_count = mxf_write_user_comments(s, s->metadata);
1252         mxf_write_metadata_key(pb, 0x013600);
1253         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1254         klv_encode_ber_length(pb, 104 + name_size + (16*track_count) + (16*user_comment_count));
1255     } else {
1256         mxf_write_metadata_key(pb, 0x013700);
1257         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1258         klv_encode_ber_length(pb, 124 + name_size + (16*track_count)); // 20 bytes length for descriptor reference
1259     }
1260
1261     // write uid
1262     mxf_write_local_tag(pb, 16, 0x3C0A);
1263     mxf_write_uuid(pb, type, 0);
1264     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
1265     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1266
1267     // write package umid
1268     mxf_write_local_tag(pb, 32, 0x4401);
1269     mxf_write_umid(s, type == SourcePackage);
1270     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1271
1272     // package name
1273     if (name_size)
1274         mxf_write_local_tag_utf16(pb, 0x4402, package_name);
1275
1276     // package creation date
1277     mxf_write_local_tag(pb, 8, 0x4405);
1278     avio_wb64(pb, mxf->timestamp);
1279
1280     // package modified date
1281     mxf_write_local_tag(pb, 8, 0x4404);
1282     avio_wb64(pb, mxf->timestamp);
1283
1284     // write track refs
1285     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
1286     mxf_write_refs_count(pb, track_count);
1287     mxf_write_uuid(pb, type == MaterialPackage ? Track :
1288                    Track + TypeBottom, -1); // timecode track
1289     for (i = 0; i < s->nb_streams; i++)
1290         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
1291
1292     // write user comment refs
1293     mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);
1294     mxf_write_refs_count(pb, user_comment_count);
1295     for (i = 0; i < user_comment_count; i++)
1296          mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);
1297
1298     // write multiple descriptor reference
1299     if (type == SourcePackage) {
1300         mxf_write_local_tag(pb, 16, 0x4701);
1301         if (s->nb_streams > 1) {
1302             mxf_write_uuid(pb, MultipleDescriptor, 0);
1303             mxf_write_multi_descriptor(s);
1304         } else
1305             mxf_write_uuid(pb, SubDescriptor, 0);
1306     }
1307
1308     // write timecode track
1309     mxf_write_track(s, mxf->timecode_track, type);
1310     mxf_write_sequence(s, mxf->timecode_track, type);
1311     mxf_write_timecode_component(s, mxf->timecode_track, type);
1312
1313     for (i = 0; i < s->nb_streams; i++) {
1314         AVStream *st = s->streams[i];
1315         mxf_write_track(s, st, type);
1316         mxf_write_sequence(s, st, type);
1317         mxf_write_structural_component(s, st, type);
1318
1319         if (type == SourcePackage) {
1320             MXFStreamContext *sc = st->priv_data;
1321             mxf_essence_container_uls[sc->index].write_desc(s, st);
1322         }
1323     }
1324 }
1325
1326 static int mxf_write_essence_container_data(AVFormatContext *s)
1327 {
1328     AVIOContext *pb = s->pb;
1329
1330     mxf_write_metadata_key(pb, 0x012300);
1331     klv_encode_ber_length(pb, 72);
1332
1333     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1334     mxf_write_uuid(pb, EssenceContainerData, 0);
1335
1336     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1337     mxf_write_umid(s, 1);
1338
1339     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1340     avio_wb32(pb, 1);
1341
1342     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1343     avio_wb32(pb, 2);
1344
1345     return 0;
1346 }
1347
1348 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1349 {
1350     const char *material_package_name = NULL;
1351     const char *file_package_name = NULL;
1352     AVDictionaryEntry *entry = NULL;
1353     AVStream *st = NULL;
1354     int i;
1355
1356     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
1357        material_package_name = entry->value;
1358
1359     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
1360         file_package_name = entry->value;
1361     } else {
1362         /* check if any of the streams contain a file_package_name */
1363         for (i = 0; i < s->nb_streams; i++) {
1364             st = s->streams[i];
1365             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
1366                 file_package_name = entry->value;
1367                 break;
1368             }
1369         }
1370     }
1371
1372     mxf_write_preface(s);
1373     mxf_write_identification(s);
1374     mxf_write_content_storage(s);
1375     mxf_write_package(s, MaterialPackage, material_package_name);
1376     mxf_write_package(s, SourcePackage, file_package_name);
1377     mxf_write_essence_container_data(s);
1378     return 0;
1379 }
1380
1381 static unsigned klv_fill_size(uint64_t size)
1382 {
1383     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1384     if (pad < 20) // smallest fill item possible
1385         return pad + KAG_SIZE;
1386     else
1387         return pad & (KAG_SIZE-1);
1388 }
1389
1390 static void mxf_write_index_table_segment(AVFormatContext *s)
1391 {
1392     MXFContext *mxf = s->priv_data;
1393     AVIOContext *pb = s->pb;
1394     int i, j, temporal_reordering = 0;
1395     int key_index = mxf->last_key_index;
1396
1397     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1398
1399     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1400         return;
1401
1402     avio_write(pb, index_table_segment_key, 16);
1403
1404     if (mxf->edit_unit_byte_count) {
1405         klv_encode_ber_length(pb, 80);
1406     } else {
1407         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +
1408                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));
1409     }
1410
1411     // instance id
1412     mxf_write_local_tag(pb, 16, 0x3C0A);
1413     mxf_write_uuid(pb, IndexTableSegment, 0);
1414
1415     // index edit rate
1416     mxf_write_local_tag(pb, 8, 0x3F0B);
1417     avio_wb32(pb, mxf->time_base.den);
1418     avio_wb32(pb, mxf->time_base.num);
1419
1420     // index start position
1421     mxf_write_local_tag(pb, 8, 0x3F0C);
1422     avio_wb64(pb, mxf->last_indexed_edit_unit);
1423
1424     // index duration
1425     mxf_write_local_tag(pb, 8, 0x3F0D);
1426     if (mxf->edit_unit_byte_count)
1427         avio_wb64(pb, 0); // index table covers whole container
1428     else
1429         avio_wb64(pb, mxf->edit_units_count);
1430
1431     // edit unit byte count
1432     mxf_write_local_tag(pb, 4, 0x3F05);
1433     avio_wb32(pb, mxf->edit_unit_byte_count);
1434
1435     // index sid
1436     mxf_write_local_tag(pb, 4, 0x3F06);
1437     avio_wb32(pb, 2);
1438
1439     // body sid
1440     mxf_write_local_tag(pb, 4, 0x3F07);
1441     avio_wb32(pb, 1);
1442
1443     if (!mxf->edit_unit_byte_count) {
1444         // real slice count - 1
1445         mxf_write_local_tag(pb, 1, 0x3F08);
1446         avio_w8(pb, mxf->slice_count);
1447
1448         // delta entry array
1449         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1450         avio_wb32(pb, s->nb_streams+1); // num of entries
1451         avio_wb32(pb, 6);               // size of one entry
1452         // write system item delta entry
1453         avio_w8(pb, 0);
1454         avio_w8(pb, 0); // slice entry
1455         avio_wb32(pb, 0); // element delta
1456         for (i = 0; i < s->nb_streams; i++) {
1457             AVStream *st = s->streams[i];
1458             MXFStreamContext *sc = st->priv_data;
1459             avio_w8(pb, sc->temporal_reordering);
1460             if (sc->temporal_reordering)
1461                 temporal_reordering = 1;
1462             if (i == 0) { // video track
1463                 avio_w8(pb, 0); // slice number
1464                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1465             } else { // audio track
1466                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1467                 audio_frame_size += klv_fill_size(audio_frame_size);
1468                 avio_w8(pb, 1);
1469                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1470             }
1471         }
1472
1473         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1474         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1475         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
1476
1477         for (i = 0; i < mxf->edit_units_count; i++) {
1478             int temporal_offset = 0;
1479
1480             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1481                 mxf->last_key_index = key_index;
1482                 key_index = i;
1483             }
1484
1485             if (temporal_reordering) {
1486                 int pic_num_in_gop = i - key_index;
1487                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1488                     for (j = key_index; j < mxf->edit_units_count; j++) {
1489                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1490                             break;
1491                     }
1492                     if (j == mxf->edit_units_count)
1493                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1494                     temporal_offset = j - key_index - pic_num_in_gop;
1495                 }
1496             }
1497             avio_w8(pb, temporal_offset);
1498
1499             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1500                 avio_w8(pb, mxf->last_key_index - i);
1501             } else {
1502                 avio_w8(pb, key_index - i); // key frame offset
1503                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1504                     mxf->last_key_index = key_index;
1505             }
1506
1507             if (!(mxf->index_entries[i].flags & 0x33) && // I frame
1508                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1509                 mxf->index_entries[i].flags |= 0x80; // random access
1510             avio_w8(pb, mxf->index_entries[i].flags);
1511             // stream offset
1512             avio_wb64(pb, mxf->index_entries[i].offset);
1513             if (s->nb_streams > 1)
1514                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1515         }
1516
1517         mxf->last_key_index = key_index - mxf->edit_units_count;
1518         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1519         mxf->edit_units_count = 0;
1520     }
1521 }
1522
1523 static void mxf_write_klv_fill(AVFormatContext *s)
1524 {
1525     unsigned pad = klv_fill_size(avio_tell(s->pb));
1526     if (pad) {
1527         avio_write(s->pb, klv_fill_key, 16);
1528         pad -= 16 + 4;
1529         klv_encode_ber4_length(s->pb, pad);
1530         ffio_fill(s->pb, 0, pad);
1531         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1532     }
1533 }
1534
1535 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1536                                 int indexsid,
1537                                 const uint8_t *key, int write_metadata)
1538 {
1539     MXFContext *mxf = s->priv_data;
1540     AVIOContext *pb = s->pb;
1541     int64_t header_byte_count_offset;
1542     unsigned index_byte_count = 0;
1543     uint64_t partition_offset = avio_tell(pb);
1544     int err;
1545
1546     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1547         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1548             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1549     else if (mxf->edit_unit_byte_count && indexsid)
1550         index_byte_count = 80;
1551
1552     if (index_byte_count) {
1553         // add encoded ber length
1554         index_byte_count += 16 + klv_ber_length(index_byte_count);
1555         index_byte_count += klv_fill_size(index_byte_count);
1556     }
1557
1558     if (key && !memcmp(key, body_partition_key, 16)) {
1559         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1560                                      sizeof(*mxf->body_partition_offset))) < 0) {
1561             mxf->body_partitions_count = 0;
1562             return err;
1563         }
1564         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1565     }
1566
1567     // write klv
1568     if (key)
1569         avio_write(pb, key, 16);
1570     else
1571         avio_write(pb, body_partition_key, 16);
1572
1573     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1574
1575     // write partition value
1576     avio_wb16(pb, 1); // majorVersion
1577     avio_wb16(pb, 2); // minorVersion
1578     avio_wb32(pb, KAG_SIZE); // KAGSize
1579
1580     avio_wb64(pb, partition_offset); // ThisPartition
1581
1582     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1583         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1584     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1585         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1586     else
1587         avio_wb64(pb, 0);
1588
1589     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1590
1591     // set offset
1592     header_byte_count_offset = avio_tell(pb);
1593     avio_wb64(pb, 0); // headerByteCount, update later
1594
1595     // indexTable
1596     avio_wb64(pb, index_byte_count); // indexByteCount
1597     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1598
1599     // BodyOffset
1600     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
1601         avio_wb64(pb, mxf->body_offset);
1602     else
1603         avio_wb64(pb, 0);
1604
1605     avio_wb32(pb, bodysid); // bodySID
1606
1607     // operational pattern
1608     if (s->oformat == &ff_mxf_opatom_muxer)
1609         avio_write(pb, opatom_ul, 16);
1610     else
1611         avio_write(pb, op1a_ul, 16);
1612
1613     // essence container
1614     mxf_write_essence_container_refs(s);
1615
1616     if (write_metadata) {
1617         // mark the start of the headermetadata and calculate metadata size
1618         int64_t pos, start;
1619         unsigned header_byte_count;
1620
1621         mxf_write_klv_fill(s);
1622         start = avio_tell(s->pb);
1623         mxf_write_primer_pack(s);
1624         mxf_write_header_metadata_sets(s);
1625         pos = avio_tell(s->pb);
1626         header_byte_count = pos - start + klv_fill_size(pos);
1627
1628         // update header_byte_count
1629         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1630         avio_wb64(pb, header_byte_count);
1631         avio_seek(pb, pos, SEEK_SET);
1632     }
1633
1634     if(key)
1635         avio_flush(pb);
1636
1637     return 0;
1638 }
1639
1640 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,
1641 AVPacket *pkt)
1642 {
1643     MXFContext *mxf = s->priv_data;
1644     MXFStreamContext *sc = st->priv_data;
1645     int i, cid;
1646     uint8_t* header_cid;
1647     int frame_size = 0;
1648
1649     if (mxf->header_written)
1650         return 1;
1651
1652     if (pkt->size < 43)
1653         return -1;
1654
1655     header_cid = pkt->data + 0x28;
1656     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];
1657
1658     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)
1659         return -1;
1660     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)
1661         return AVERROR_INVALIDDATA;
1662
1663     switch (cid) {
1664     case 1235:
1665         sc->index = 24;
1666         sc->component_depth = 10;
1667         break;
1668     case 1237:
1669         sc->index = 25;
1670         break;
1671     case 1238:
1672         sc->index = 26;
1673         break;
1674     case 1241:
1675         sc->index = 27;
1676         sc->component_depth = 10;
1677         break;
1678     case 1242:
1679         sc->index = 28;
1680         break;
1681     case 1243:
1682         sc->index = 29;
1683         break;
1684     case 1250:
1685         sc->index = 30;
1686         sc->component_depth = 10;
1687         break;
1688     case 1251:
1689         sc->index = 31;
1690         break;
1691     case 1252:
1692         sc->index = 32;
1693         break;
1694     case 1253:
1695         sc->index = 33;
1696         break;
1697     default:
1698         return -1;
1699     }
1700
1701     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1702     sc->aspect_ratio = (AVRational){ 16, 9 };
1703
1704     if(s->oformat == &ff_mxf_opatom_muxer){
1705         mxf->edit_unit_byte_count = frame_size;
1706         return 1;
1707     }
1708
1709     mxf->edit_unit_byte_count = KAG_SIZE;
1710     for (i = 0; i < s->nb_streams; i++) {
1711         AVStream *st = s->streams[i];
1712         MXFStreamContext *sc = st->priv_data;
1713         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1714             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1715             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1716         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1717             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1718             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1719         }
1720     }
1721
1722     return 1;
1723 }
1724
1725 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1726 {
1727     MXFContext *mxf = s->priv_data;
1728     MXFStreamContext *sc = st->priv_data;
1729     uint8_t *vs_pack, *vsc_pack;
1730     int i, ul_index, frame_size, stype, pal;
1731
1732     if (mxf->header_written)
1733         return 1;
1734
1735     // Check for minimal frame size
1736     if (pkt->size < 120000)
1737         return -1;
1738
1739     vs_pack  = pkt->data + 80*5 + 48;
1740     vsc_pack = pkt->data + 80*5 + 53;
1741     stype    = vs_pack[3] & 0x1f;
1742     pal      = (vs_pack[3] >> 5) & 0x1;
1743
1744     if ((vs_pack[2] & 0x07) == 0x02)
1745         sc->aspect_ratio = (AVRational){ 16, 9 };
1746     else
1747         sc->aspect_ratio = (AVRational){ 4, 3 };
1748
1749     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
1750     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
1751     // and set field dominance accordingly
1752     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
1753
1754     switch (stype) {
1755     case 0x18: // DV100 720p
1756         ul_index = 6 + pal;
1757         frame_size = pal ? 288000 : 240000;
1758         if (sc->interlaced) {
1759             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
1760             sc->interlaced = 0;
1761         }
1762         break;
1763     case 0x14: // DV100 1080i
1764         ul_index = 4 + pal;
1765         frame_size = pal ? 576000 : 480000;
1766         break;
1767     case 0x04: // DV50
1768         ul_index = 2 + pal;
1769         frame_size = pal ? 288000 : 240000;
1770         break;
1771     default: // DV25
1772         ul_index = 0 + pal;
1773         frame_size = pal ? 144000 : 120000;
1774     }
1775
1776     sc->index = ul_index + 16;
1777     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
1778
1779     if(s->oformat == &ff_mxf_opatom_muxer) {
1780         mxf->edit_unit_byte_count = frame_size;
1781         return 1;
1782     }
1783
1784     mxf->edit_unit_byte_count = KAG_SIZE;
1785     for (i = 0; i < s->nb_streams; i++) {
1786         AVStream *st = s->streams[i];
1787         MXFStreamContext *sc = st->priv_data;
1788         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1789             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1790             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1791         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1792             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1793             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1794         }
1795     }
1796
1797     return 1;
1798 }
1799
1800 static const struct {
1801     UID uid;
1802     int frame_size;
1803     int profile;
1804     uint8_t interlaced;
1805 } mxf_h264_codec_uls[] = {
1806     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra
1807     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60
1808     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50
1809     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30
1810     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25
1811     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60
1812     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50
1813     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra
1814     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60
1815     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50
1816     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30
1817     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25
1818     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60
1819     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50
1820 };
1821
1822 static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
1823                                 AVPacket *pkt, MXFIndexEntry *e)
1824 {
1825     MXFContext *mxf = s->priv_data;
1826     MXFStreamContext *sc = st->priv_data;
1827     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);
1828     const uint8_t *buf = pkt->data;
1829     const uint8_t *buf_end = pkt->data + pkt->size;
1830     uint32_t state = -1;
1831     int extra_size = 512; // support AVC Intra files without SPS/PPS header
1832     int i, frame_size;
1833     uint8_t uid_found;
1834
1835     if (pkt->size > extra_size)
1836         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header
1837
1838     for (;;) {
1839         buf = avpriv_find_start_code(buf, buf_end, &state);
1840         if (buf >= buf_end)
1841             break;
1842         --buf;
1843         switch (state & 0x1f) {
1844         case NAL_SPS:
1845             st->codec->profile = buf[1];
1846             e->flags |= 0x40;
1847             break;
1848         case NAL_PPS:
1849             if (e->flags & 0x40) { // sequence header present
1850                 e->flags |= 0x80; // random access
1851                 extra_size = 0;
1852                 buf = buf_end;
1853             }
1854             break;
1855         default:
1856             break;
1857         }
1858     }
1859
1860     if (mxf->header_written)
1861         return 1;
1862
1863     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD
1864     sc->component_depth = 10; // AVC Intra is always 10 Bit
1865     sc->interlaced = st->codec->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;
1866     if (sc->interlaced)
1867         sc->field_dominance = 1; // top field first is mandatory for AVC Intra
1868
1869     uid_found = 0;
1870     frame_size = pkt->size + extra_size;
1871     for (i = 0; i < mxf_h264_num_codec_uls; i++) {
1872         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {
1873             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1874             return 1;
1875         } else if (st->codec->profile == mxf_h264_codec_uls[i].profile) {
1876             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1877             uid_found = 1;
1878         }
1879     }
1880
1881     if (!uid_found) {
1882         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");
1883         return 0;
1884     }
1885
1886     return 1;
1887 }
1888
1889 static const UID mxf_mpeg2_codec_uls[] = {
1890     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1891     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1892     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1893     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1894     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1895     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1896     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1897     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1898     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
1899     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
1900 };
1901
1902 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1903 {
1904     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
1905
1906     if (avctx->profile == 4) { // Main
1907         if (avctx->level == 8) // Main
1908             return &mxf_mpeg2_codec_uls[0+long_gop];
1909         else if (avctx->level == 4) // High
1910             return &mxf_mpeg2_codec_uls[4+long_gop];
1911         else if (avctx->level == 6) // High 14
1912             return &mxf_mpeg2_codec_uls[8+long_gop];
1913     } else if (avctx->profile == 0) { // 422
1914         if (avctx->level == 5) // Main
1915             return &mxf_mpeg2_codec_uls[2+long_gop];
1916         else if (avctx->level == 2) // High
1917             return &mxf_mpeg2_codec_uls[6+long_gop];
1918     }
1919     return NULL;
1920 }
1921
1922 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
1923                                  AVPacket *pkt, MXFIndexEntry *e)
1924 {
1925     MXFStreamContext *sc = st->priv_data;
1926     uint32_t c = -1;
1927     int i;
1928
1929     for(i = 0; i < pkt->size - 4; i++) {
1930         c = (c<<8) + pkt->data[i];
1931         if (c == 0x1b5) {
1932             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1933                 st->codec->profile = pkt->data[i+1] & 0x07;
1934                 st->codec->level   = pkt->data[i+2] >> 4;
1935             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1936                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1937                 if (sc->interlaced)
1938                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
1939                 break;
1940             }
1941         } else if (c == 0x1b8) { // gop
1942             if (pkt->data[i+4]>>6 & 0x01) { // closed
1943                 sc->closed_gop = 1;
1944                 if (e->flags & 0x40) // sequence header present
1945                     e->flags |= 0x80; // random access
1946             }
1947         } else if (c == 0x1b3) { // seq
1948             e->flags |= 0x40;
1949             switch ((pkt->data[i+4]>>4) & 0xf) {
1950             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1951             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1952             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1953             default:
1954                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1955                           st->codec->width, st->codec->height, 1024*1024);
1956             }
1957         } else if (c == 0x100) { // pic
1958             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1959             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
1960             if (pict_type == 2) { // P frame
1961                 e->flags |= 0x22;
1962                 sc->closed_gop = 0; // reset closed gop, don't matter anymore
1963             } else if (pict_type == 3) { // B frame
1964                 if (sc->closed_gop)
1965                     e->flags |= 0x13; // only backward prediction
1966                 else
1967                     e->flags |= 0x33;
1968                 sc->temporal_reordering = -1;
1969             } else if (!pict_type) {
1970                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1971                 return 0;
1972             }
1973         }
1974     }
1975     if (s->oformat != &ff_mxf_d10_muxer)
1976         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1977     return !!sc->codec_ul;
1978 }
1979
1980 static uint64_t mxf_parse_timestamp(time_t timestamp)
1981 {
1982     struct tm tmbuf;
1983     struct tm *time = gmtime_r(&timestamp, &tmbuf);
1984     if (!time)
1985         return 0;
1986     return (uint64_t)(time->tm_year+1900) << 48 |
1987            (uint64_t)(time->tm_mon+1)     << 40 |
1988            (uint64_t) time->tm_mday       << 32 |
1989                       time->tm_hour       << 24 |
1990                       time->tm_min        << 16 |
1991                       time->tm_sec        << 8;
1992 }
1993
1994 static void mxf_gen_umid(AVFormatContext *s)
1995 {
1996     MXFContext *mxf = s->priv_data;
1997     uint32_t seed = av_get_random_seed();
1998     uint64_t umid = seed + 0x5294713400000000LL;
1999
2000     AV_WB64(mxf->umid  , umid);
2001     AV_WB64(mxf->umid+8, umid>>8);
2002
2003     mxf->instance_number = seed & 0xFFFFFF;
2004 }
2005
2006 static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)
2007 {
2008     MXFContext *mxf = s->priv_data;
2009     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
2010     if (!tcr)
2011         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2012
2013     if (tcr)
2014         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
2015     else
2016         return av_timecode_init(&mxf->tc, rate, 0, 0, s);
2017 }
2018
2019 static int mxf_write_header(AVFormatContext *s)
2020 {
2021     MXFContext *mxf = s->priv_data;
2022     int i, ret;
2023     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
2024     const MXFSamplesPerFrame *spf = NULL;
2025     AVDictionaryEntry *t;
2026     int64_t timestamp = 0;
2027
2028     if (!s->nb_streams)
2029         return -1;
2030
2031     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1){
2032         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
2033         return -1;
2034     }
2035
2036     for (i = 0; i < s->nb_streams; i++) {
2037         AVStream *st = s->streams[i];
2038         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
2039         if (!sc)
2040             return AVERROR(ENOMEM);
2041         st->priv_data = sc;
2042
2043         if (((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
2044             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
2045             return -1;
2046         }
2047
2048         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2049             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codec->pix_fmt);
2050             // TODO: should be avg_frame_rate
2051             AVRational rate, tbc = st->time_base;
2052             // Default component depth to 8
2053             sc->component_depth = 8;
2054             sc->h_chroma_sub_sample = 2;
2055             sc->color_siting = 0xFF;
2056
2057             if (pix_desc) {
2058                 sc->component_depth     = pix_desc->comp[0].depth_minus1 + 1;
2059                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
2060             }
2061             switch (ff_choose_chroma_location(s, st)) {
2062             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;
2063             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;
2064             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;
2065             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;
2066             }
2067
2068             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2069             spf = ff_mxf_get_samples_per_frame(s, tbc);
2070             if (!spf) {
2071                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
2072                        tbc.den, tbc.num);
2073                 return AVERROR(EINVAL);
2074             }
2075             mxf->time_base = spf->time_base;
2076             rate = av_inv_q(mxf->time_base);
2077             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
2078             if((ret = mxf_init_timecode(s, st, rate)) < 0)
2079                 return ret;
2080
2081             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;
2082             if (s->oformat == &ff_mxf_d10_muxer) {
2083                 if (sc->video_bit_rate == 50000000) {
2084                     if (mxf->time_base.den == 25) sc->index = 3;
2085                     else                          sc->index = 5;
2086                 } else if (sc->video_bit_rate == 40000000) {
2087                     if (mxf->time_base.den == 25) sc->index = 7;
2088                     else                          sc->index = 9;
2089                 } else if (sc->video_bit_rate == 30000000) {
2090                     if (mxf->time_base.den == 25) sc->index = 11;
2091                     else                          sc->index = 13;
2092                 } else {
2093                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
2094                     return -1;
2095                 }
2096
2097                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
2098                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *
2099                     mxf->time_base.num / (8*mxf->time_base.den);
2100                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2101                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;
2102                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2103
2104                 sc->signal_standard = 1;
2105             }
2106         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2107             if (st->codec->sample_rate != 48000) {
2108                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
2109                 return -1;
2110             }
2111             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
2112             if (s->oformat == &ff_mxf_d10_muxer) {
2113                 if (st->index != 1) {
2114                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
2115                     return -1;
2116                 }
2117                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
2118                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
2119                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
2120                 }
2121                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
2122             } else if (s->oformat == &ff_mxf_opatom_muxer) {
2123                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
2124
2125                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
2126                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
2127                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
2128                     return AVERROR_PATCHWELCOME;
2129                 }
2130                 if (st->codec->channels != 1) {
2131                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
2132                     return AVERROR(EINVAL);
2133                 }
2134
2135                 spf = ff_mxf_get_samples_per_frame(s, tbc);
2136                 if (!spf){
2137                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);
2138                     return AVERROR(EINVAL);
2139                 }
2140
2141                 mxf->time_base = st->time_base;
2142                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)
2143                     return ret;
2144
2145                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2146                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
2147                 sc->index = 2;
2148             } else {
2149                 mxf->slice_count = 1;
2150             }
2151         }
2152
2153         if (!sc->index) {
2154             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
2155             if (sc->index == -1) {
2156                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
2157                        "codec not currently supported in container\n", i);
2158                 return -1;
2159             }
2160         }
2161
2162         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
2163
2164         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
2165         sc->track_essence_element_key[15] = present[sc->index];
2166         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
2167
2168         if (!present[sc->index])
2169             mxf->essence_container_count++;
2170         present[sc->index]++;
2171     }
2172
2173     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
2174         mxf->essence_container_count = 1;
2175     }
2176
2177     if (!(s->flags & AVFMT_FLAG_BITEXACT))
2178         mxf_gen_umid(s);
2179
2180     for (i = 0; i < s->nb_streams; i++) {
2181         MXFStreamContext *sc = s->streams[i]->priv_data;
2182         // update element count
2183         sc->track_essence_element_key[13] = present[sc->index];
2184         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
2185             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
2186         else
2187             sc->order = AV_RB32(sc->track_essence_element_key+12);
2188     }
2189
2190     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
2191         timestamp = ff_iso8601_to_unix_time(t->value);
2192     if (timestamp)
2193         mxf->timestamp = mxf_parse_timestamp(timestamp);
2194     mxf->duration = -1;
2195
2196     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
2197     if (!mxf->timecode_track)
2198         return AVERROR(ENOMEM);
2199     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
2200     if (!mxf->timecode_track->priv_data)
2201         return AVERROR(ENOMEM);
2202     mxf->timecode_track->index = -1;
2203
2204     if (!spf)
2205         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
2206
2207     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
2208         return -1;
2209
2210     return 0;
2211 }
2212
2213 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
2214 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 };
2215
2216 static void mxf_write_system_item(AVFormatContext *s)
2217 {
2218     MXFContext *mxf = s->priv_data;
2219     AVIOContext *pb = s->pb;
2220     unsigned frame;
2221     uint32_t time_code;
2222
2223     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2224
2225     // write system metadata pack
2226     avio_write(pb, system_metadata_pack_key, 16);
2227     klv_encode_ber4_length(pb, 57);
2228     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
2229     avio_w8(pb, 0x04); // content package rate
2230     avio_w8(pb, 0x00); // content package type
2231     avio_wb16(pb, 0x00); // channel handle
2232     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow
2233     if (mxf->essence_container_count > 1)
2234         avio_write(pb, multiple_desc_ul, 16);
2235     else {
2236         MXFStreamContext *sc = s->streams[0]->priv_data;
2237         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
2238     }
2239     avio_w8(pb, 0);
2240     avio_wb64(pb, 0);
2241     avio_wb64(pb, 0); // creation date/time stamp
2242
2243     avio_w8(pb, 0x81); // SMPTE 12M time code
2244     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
2245     avio_wb32(pb, time_code);
2246     avio_wb32(pb, 0); // binary group data
2247     avio_wb64(pb, 0);
2248
2249     // write system metadata package set
2250     avio_write(pb, system_metadata_package_set_key, 16);
2251     klv_encode_ber4_length(pb, 35);
2252     avio_w8(pb, 0x83); // UMID
2253     avio_wb16(pb, 0x20);
2254     mxf_write_umid(s, 1);
2255 }
2256
2257 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2258 {
2259     MXFContext *mxf = s->priv_data;
2260     AVIOContext *pb = s->pb;
2261     MXFStreamContext *sc = st->priv_data;
2262     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /
2263         (8*mxf->time_base.den); // frame size
2264     int pad;
2265
2266     packet_size += 16 + 4;
2267     packet_size += klv_fill_size(packet_size);
2268
2269     klv_encode_ber4_length(pb, pkt->size);
2270     avio_write(pb, pkt->data, pkt->size);
2271
2272     // ensure CBR muxing by padding to correct video frame size
2273     pad = packet_size - pkt->size - 16 - 4;
2274     if (pad > 20) {
2275         avio_write(s->pb, klv_fill_key, 16);
2276         pad -= 16 + 4;
2277         klv_encode_ber4_length(s->pb, pad);
2278         ffio_fill(s->pb, 0, pad);
2279         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
2280     } else {
2281         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
2282         ffio_fill(s->pb, 0, pad);
2283     }
2284 }
2285
2286 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2287 {
2288     MXFContext *mxf = s->priv_data;
2289     AVIOContext *pb = s->pb;
2290     int frame_size = pkt->size / st->codec->block_align;
2291     uint8_t *samples = pkt->data;
2292     uint8_t *end = pkt->data + pkt->size;
2293     int i;
2294
2295     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
2296
2297     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
2298     avio_wl16(pb, frame_size);
2299     avio_w8(pb, (1<<st->codec->channels)-1);
2300
2301     while (samples < end) {
2302         for (i = 0; i < st->codec->channels; i++) {
2303             uint32_t sample;
2304             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {
2305                 sample = AV_RL24(samples)<< 4;
2306                 samples += 3;
2307             } else {
2308                 sample = AV_RL16(samples)<<12;
2309                 samples += 2;
2310             }
2311             avio_wl32(pb, sample | i);
2312         }
2313         for (; i < 8; i++)
2314             avio_wl32(pb, i);
2315     }
2316 }
2317
2318 static int mxf_write_opatom_body_partition(AVFormatContext *s)
2319 {
2320     MXFContext *mxf = s->priv_data;
2321     AVIOContext *pb = s->pb;
2322     AVStream *st = s->streams[0];
2323     MXFStreamContext *sc = st->priv_data;
2324     const uint8_t *key = NULL;
2325
2326     int err;
2327
2328     if (!mxf->header_written)
2329         key = body_partition_key;
2330
2331     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)
2332         return err;
2333     mxf_write_klv_fill(s);
2334     avio_write(pb, sc->track_essence_element_key, 16);
2335     klv_encode_ber9_length(pb, mxf->body_offset);
2336     return 0;
2337 }
2338
2339 static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)
2340 {
2341     MXFContext *mxf = s->priv_data;
2342     AVIOContext *pb = s->pb;
2343
2344     int err;
2345
2346     if (!mxf->header_written) {
2347         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2348             return err;
2349         mxf_write_klv_fill(s);
2350
2351         if ((err = mxf_write_opatom_body_partition(s)) < 0)
2352             return err;
2353         mxf->header_written = 1;
2354     }
2355
2356     if (!mxf->edit_unit_byte_count) {
2357         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2358         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;
2359         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;
2360     }
2361     mxf->edit_units_count++;
2362     avio_write(pb, pkt->data, pkt->size);
2363     mxf->body_offset += pkt->size;
2364     avio_flush(pb);
2365
2366     return 0;
2367 }
2368
2369 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
2370 {
2371     MXFContext *mxf = s->priv_data;
2372     AVIOContext *pb = s->pb;
2373     AVStream *st = s->streams[pkt->stream_index];
2374     MXFStreamContext *sc = st->priv_data;
2375     MXFIndexEntry ie = {0};
2376     int err;
2377
2378     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
2379         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
2380                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
2381             mxf->edit_units_count = 0;
2382             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
2383             return err;
2384         }
2385     }
2386
2387     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2388         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
2389             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
2390             return -1;
2391         }
2392     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {
2393         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
2394             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
2395             return -1;
2396         }
2397     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {
2398         if (!mxf_parse_dv_frame(s, st, pkt)) {
2399             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
2400             return -1;
2401         }
2402     } else if (st->codec->codec_id == AV_CODEC_ID_H264) {
2403         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {
2404             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");
2405             return -1;
2406         }
2407     }
2408
2409     if (s->oformat == &ff_mxf_opatom_muxer)
2410         return mxf_write_opatom_packet(s, pkt, &ie);
2411
2412     if (!mxf->header_written) {
2413         if (mxf->edit_unit_byte_count) {
2414             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
2415                 return err;
2416             mxf_write_klv_fill(s);
2417             mxf_write_index_table_segment(s);
2418         } else {
2419             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2420                 return err;
2421         }
2422         mxf->header_written = 1;
2423     }
2424
2425     if (st->index == 0) {
2426         if (!mxf->edit_unit_byte_count &&
2427             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
2428             !(ie.flags & 0x33)) { // I frame, Gop start
2429             mxf_write_klv_fill(s);
2430             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
2431                 return err;
2432             mxf_write_klv_fill(s);
2433             mxf_write_index_table_segment(s);
2434         }
2435
2436         mxf_write_klv_fill(s);
2437         mxf_write_system_item(s);
2438
2439         if (!mxf->edit_unit_byte_count) {
2440             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2441             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2442             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2443             mxf->body_offset += KAG_SIZE; // size of system element
2444         }
2445         mxf->edit_units_count++;
2446     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2447         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2448             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2449     }
2450
2451     mxf_write_klv_fill(s);
2452     avio_write(pb, sc->track_essence_element_key, 16); // write key
2453     if (s->oformat == &ff_mxf_d10_muxer) {
2454         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2455             mxf_write_d10_video_packet(s, st, pkt);
2456         else
2457             mxf_write_d10_audio_packet(s, st, pkt);
2458     } else {
2459         klv_encode_ber4_length(pb, pkt->size); // write length
2460         avio_write(pb, pkt->data, pkt->size);
2461         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2462     }
2463
2464     avio_flush(pb);
2465
2466     return 0;
2467 }
2468
2469 static void mxf_write_random_index_pack(AVFormatContext *s)
2470 {
2471     MXFContext *mxf = s->priv_data;
2472     AVIOContext *pb = s->pb;
2473     uint64_t pos = avio_tell(pb);
2474     int i;
2475
2476     avio_write(pb, random_index_pack_key, 16);
2477     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
2478
2479     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
2480         avio_wb32(pb, 1); // BodySID of header partition
2481     else
2482         avio_wb32(pb, 0);
2483     avio_wb64(pb, 0); // offset of header partition
2484
2485     for (i = 0; i < mxf->body_partitions_count; i++) {
2486         avio_wb32(pb, 1); // BodySID
2487         avio_wb64(pb, mxf->body_partition_offset[i]);
2488     }
2489
2490     avio_wb32(pb, 0); // BodySID of footer partition
2491     avio_wb64(pb, mxf->footer_partition_offset);
2492
2493     avio_wb32(pb, avio_tell(pb) - pos + 4);
2494 }
2495
2496 static int mxf_write_footer(AVFormatContext *s)
2497 {
2498     MXFContext *mxf = s->priv_data;
2499     AVIOContext *pb = s->pb;
2500     int err = 0;
2501
2502     if (!mxf->header_written ||
2503         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
2504         /* reason could be invalid options/not supported codec/out of memory */
2505         err = AVERROR_UNKNOWN;
2506         goto end;
2507     }
2508
2509     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2510
2511     mxf_write_klv_fill(s);
2512     mxf->footer_partition_offset = avio_tell(pb);
2513     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
2514         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
2515             goto end;
2516     } else {
2517         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
2518             goto end;
2519         mxf_write_klv_fill(s);
2520         mxf_write_index_table_segment(s);
2521     }
2522
2523     mxf_write_klv_fill(s);
2524     mxf_write_random_index_pack(s);
2525
2526     if (s->pb->seekable) {
2527         if (s->oformat == &ff_mxf_opatom_muxer){
2528             /* rewrite body partition to update lengths */
2529             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
2530             if ((err = mxf_write_opatom_body_partition(s)) < 0)
2531                 goto end;
2532         }
2533
2534         avio_seek(pb, 0, SEEK_SET);
2535         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
2536             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
2537                 goto end;
2538             mxf_write_klv_fill(s);
2539             mxf_write_index_table_segment(s);
2540         } else {
2541             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
2542                 goto end;
2543         }
2544     }
2545
2546 end:
2547     ff_audio_interleave_close(s);
2548
2549     av_freep(&mxf->index_entries);
2550     av_freep(&mxf->body_partition_offset);
2551     av_freep(&mxf->timecode_track->priv_data);
2552     av_freep(&mxf->timecode_track);
2553
2554     mxf_free(s);
2555
2556     return err < 0 ? err : 0;
2557 }
2558
2559 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2560 {
2561     int i, stream_count = 0;
2562
2563     for (i = 0; i < s->nb_streams; i++)
2564         stream_count += !!s->streams[i]->last_in_packet_buffer;
2565
2566     if (stream_count && (s->nb_streams == stream_count || flush)) {
2567         AVPacketList *pktl = s->internal->packet_buffer;
2568         if (s->nb_streams != stream_count) {
2569             AVPacketList *last = NULL;
2570             // find last packet in edit unit
2571             while (pktl) {
2572                 if (!stream_count || pktl->pkt.stream_index == 0)
2573                     break;
2574                 last = pktl;
2575                 pktl = pktl->next;
2576                 stream_count--;
2577             }
2578             // purge packet queue
2579             while (pktl) {
2580                 AVPacketList *next = pktl->next;
2581
2582                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2583                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2584                 av_free_packet(&pktl->pkt);
2585                 av_freep(&pktl);
2586                 pktl = next;
2587             }
2588             if (last)
2589                 last->next = NULL;
2590             else {
2591                 s->internal->packet_buffer = NULL;
2592                 s->internal->packet_buffer_end= NULL;
2593                 goto out;
2594             }
2595             pktl = s->internal->packet_buffer;
2596         }
2597
2598         *out = pktl->pkt;
2599         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
2600         s->internal->packet_buffer = pktl->next;
2601         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2602             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2603         if(!s->internal->packet_buffer)
2604             s->internal->packet_buffer_end= NULL;
2605         av_freep(&pktl);
2606         return 1;
2607     } else {
2608     out:
2609         av_init_packet(out);
2610         return 0;
2611     }
2612 }
2613
2614 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2615 {
2616     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
2617     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
2618
2619     return next->dts > pkt->dts ||
2620         (next->dts == pkt->dts && sc->order < sc2->order);
2621 }
2622
2623 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2624 {
2625     return ff_audio_rechunk_interleave(s, out, pkt, flush,
2626                                mxf_interleave_get_packet, mxf_compare_timestamps);
2627 }
2628
2629 static const AVOption d10_options[] = {
2630     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
2631       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
2632     { NULL },
2633 };
2634
2635 static const AVClass mxf_d10_muxer_class = {
2636     .class_name     = "MXF-D10 muxer",
2637     .item_name      = av_default_item_name,
2638     .option         = d10_options,
2639     .version        = LIBAVUTIL_VERSION_INT,
2640 };
2641
2642 static const AVOption opatom_options[] = {
2643     { "mxf_audio_edit_rate", "Audio edit rate for timecode",
2644         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2645     { NULL },
2646 };
2647
2648 static const AVClass mxf_opatom_muxer_class = {
2649     .class_name     = "MXF-OPAtom muxer",
2650     .item_name      = av_default_item_name,
2651     .option         = opatom_options,
2652     .version        = LIBAVUTIL_VERSION_INT,
2653 };
2654
2655 AVOutputFormat ff_mxf_muxer = {
2656     .name              = "mxf",
2657     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
2658     .mime_type         = "application/mxf",
2659     .extensions        = "mxf",
2660     .priv_data_size    = sizeof(MXFContext),
2661     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2662     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2663     .write_header      = mxf_write_header,
2664     .write_packet      = mxf_write_packet,
2665     .write_trailer     = mxf_write_footer,
2666     .flags             = AVFMT_NOTIMESTAMPS,
2667     .interleave_packet = mxf_interleave,
2668 };
2669
2670 AVOutputFormat ff_mxf_d10_muxer = {
2671     .name              = "mxf_d10",
2672     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
2673     .mime_type         = "application/mxf",
2674     .priv_data_size    = sizeof(MXFContext),
2675     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2676     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2677     .write_header      = mxf_write_header,
2678     .write_packet      = mxf_write_packet,
2679     .write_trailer     = mxf_write_footer,
2680     .flags             = AVFMT_NOTIMESTAMPS,
2681     .interleave_packet = mxf_interleave,
2682     .priv_class        = &mxf_d10_muxer_class,
2683 };
2684
2685 AVOutputFormat ff_mxf_opatom_muxer = {
2686     .name              = "mxf_opatom",
2687     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
2688     .mime_type         = "application/mxf",
2689     .extensions        = "mxf",
2690     .priv_data_size    = sizeof(MXFContext),
2691     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2692     .video_codec       = AV_CODEC_ID_DNXHD,
2693     .write_header      = mxf_write_header,
2694     .write_packet      = mxf_write_packet,
2695     .write_trailer     = mxf_write_footer,
2696     .flags             = AVFMT_NOTIMESTAMPS,
2697     .interleave_packet = mxf_interleave,
2698     .priv_class        = &mxf_opatom_muxer_class,
2699 };