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

   1 /*
   2  * MXF muxer
   3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
   4  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /*
  24  * signal_standard, color_siting, store_user_comments and klv_fill_key version
  25  * fixes sponsored by NOA GmbH
  26  */
  27
  28 /*
  29  * References
  30  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
  31  * SMPTE 377M MXF File Format Specifications
  32  * SMPTE 379M MXF Generic Container
  33  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
  34  * SMPTE 422M Mapping JPEG 2000 Codestreams into the MXF Generic Container
  35  * SMPTE RP210: SMPTE Metadata Dictionary
  36  * SMPTE RP224: Registry of SMPTE Universal Labels
  37  */
  38
  39 #include <inttypes.h>
  40 #include <math.h>
  41 #include <time.h>
  42
  43 #include "libavutil/opt.h"
  44 #include "libavutil/random_seed.h"
  45 #include "libavutil/timecode.h"
  46 #include "libavutil/avassert.h"
  47 #include "libavutil/pixdesc.h"
  48 #include "libavutil/time_internal.h"
  49 #include "libavcodec/bytestream.h"
  50 #include "libavcodec/dnxhddata.h"
  51 #include "libavcodec/h264.h"
  52 #include "libavcodec/internal.h"
  53 #include "audiointerleave.h"
  54 #include "avformat.h"
  55 #include "avio_internal.h"
  56 #include "internal.h"
  57 #include "mxf.h"
  58 #include "config.h"
  59
  60 extern AVOutputFormat ff_mxf_d10_muxer;
  61 extern AVOutputFormat ff_mxf_opatom_muxer;
  62
  63 #define EDIT_UNITS_PER_BODY 250
  64 #define KAG_SIZE 512
  65
  66 typedef struct MXFLocalTagPair {
  67     int local_tag;
  68     UID uid;
  69 } MXFLocalTagPair;
  70
  71 typedef struct MXFIndexEntry {
  72     uint8_t flags;
  73     uint64_t offset;
  74     unsigned slice_offset; ///< offset of audio slice
  75     uint16_t temporal_ref;
  76 } MXFIndexEntry;
  77
  78 typedef struct MXFStreamContext {
  79     AudioInterleaveContext aic;
  80     UID track_essence_element_key;
  81     int index;               ///< index in mxf_essence_container_uls table
  82     const UID *codec_ul;
  83     int order;               ///< interleaving order if dts are equal
  84     int interlaced;          ///< whether picture is interlaced
  85     int field_dominance;     ///< tff=1, bff=2
  86     int component_depth;
  87     int color_siting;
  88     int signal_standard;
  89     int h_chroma_sub_sample;
  90     int temporal_reordering;
  91     AVRational aspect_ratio; ///< display aspect ratio
  92     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
  93     int video_bit_rate;
  94 } MXFStreamContext;
  95
  96 typedef struct MXFContainerEssenceEntry {
  97     UID container_ul;
  98     UID element_ul;
  99     UID codec_ul;
 100     void (*write_desc)(AVFormatContext *, AVStream *);
 101 } MXFContainerEssenceEntry;
 102
 103 static const struct {
 104     enum AVCodecID id;
 105     int index;
 106 } mxf_essence_mappings[] = {
 107     { AV_CODEC_ID_MPEG2VIDEO, 0 },
 108     { AV_CODEC_ID_PCM_S24LE,  1 },
 109     { AV_CODEC_ID_PCM_S16LE,  1 },
 110     { AV_CODEC_ID_DVVIDEO,   15 },
 111     { AV_CODEC_ID_DNXHD,     24 },
 112     { AV_CODEC_ID_JPEG2000,  34 },
 113     { AV_CODEC_ID_H264,      35 },
 114     { AV_CODEC_ID_NONE }
 115 };
 116
 117 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
 118 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
 119 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
 120 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
 121 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
 122
 123 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
 124     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 125       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 126       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 127       mxf_write_mpegvideo_desc },
 128     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 129       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 130       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 131       mxf_write_aes3_desc },
 132     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 133       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 134       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 135       mxf_write_wav_desc },
 136     // D-10 625/50 PAL 50mb/s
 137     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 138       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 139       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 140       mxf_write_cdci_desc },
 141     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 142       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 143       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 144       mxf_write_generic_sound_desc },
 145     // D-10 525/60 NTSC 50mb/s
 146     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 147       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 148       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 149       mxf_write_cdci_desc },
 150     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 151       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 152       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 153       mxf_write_generic_sound_desc },
 154     // D-10 625/50 PAL 40mb/s
 155     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 156       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 157       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 158       mxf_write_cdci_desc },
 159     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 160       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 161       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 162       mxf_write_generic_sound_desc },
 163     // D-10 525/60 NTSC 40mb/s
 164     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 165       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 166       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 167       mxf_write_cdci_desc },
 168     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 169       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 170       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 171       mxf_write_generic_sound_desc },
 172     // D-10 625/50 PAL 30mb/s
 173     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 174       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 175       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 176       mxf_write_cdci_desc },
 177     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 178       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 179       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 180       mxf_write_generic_sound_desc },
 181     // D-10 525/60 NTSC 30mb/s
 182     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 183       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 184       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 185       mxf_write_cdci_desc },
 186     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 187       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 188       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 189       mxf_write_generic_sound_desc },
 190     // DV Unknown
 191     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
 192       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 193       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
 194       mxf_write_cdci_desc },
 195     // DV25 525/60
 196     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },
 197       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 198       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 199       mxf_write_cdci_desc },
 200     // DV25 625/50
 201     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },
 202       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 203       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },
 204       mxf_write_cdci_desc },
 205     // DV50 525/60
 206     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },
 207       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 208       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },
 209       mxf_write_cdci_desc },
 210     // DV50 625/50
 211     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },
 212       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 213       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },
 214       mxf_write_cdci_desc },
 215     // DV100 1080/60
 216     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },
 217       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 218       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },
 219       mxf_write_cdci_desc },
 220     // DV100 1080/50
 221     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },
 222       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 223       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },
 224       mxf_write_cdci_desc },
 225     // DV100 720/60
 226     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },
 227       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 228       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },
 229       mxf_write_cdci_desc },
 230     // DV100 720/50
 231     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },
 232       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 233       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },
 234       mxf_write_cdci_desc },
 235     // DNxHD 1080p 10bit high
 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,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
 239       mxf_write_cdci_desc },
 240     // DNxHD 1080p 8bit medium
 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,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },
 244       mxf_write_cdci_desc },
 245     // DNxHD 1080p 8bit 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,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },
 249       mxf_write_cdci_desc },
 250     // DNxHD 1080i 10bit high
 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,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },
 254       mxf_write_cdci_desc },
 255     // DNxHD 1080i 8bit medium
 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,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },
 259       mxf_write_cdci_desc },
 260     // DNxHD 1080i 8bit high
 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,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },
 264       mxf_write_cdci_desc },
 265     // DNxHD 720p 10bit
 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,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },
 269       mxf_write_cdci_desc },
 270     // DNxHD 720p 8bit high
 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,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },
 274       mxf_write_cdci_desc },
 275     // DNxHD 720p 8bit medium
 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,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },
 279       mxf_write_cdci_desc },
 280     // DNxHD 720p 8bit low
 281     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 282       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 283       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },
 284       mxf_write_cdci_desc },
 285     // JPEG2000
 286     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },
 287       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },
 288       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },
 289       mxf_write_cdci_desc },
 290     // H.264
 291     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },
 292       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 293       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 294       mxf_write_mpegvideo_desc },
 295     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 296       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 297       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 298       NULL },
 299 };
 300
 301 typedef struct MXFContext {
 302     AVClass *av_class;
 303     int64_t footer_partition_offset;
 304     int essence_container_count;
 305     AVRational time_base;
 306     int header_written;
 307     MXFIndexEntry *index_entries;
 308     unsigned edit_units_count;
 309     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 310     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 311     int last_indexed_edit_unit;
 312     uint64_t *body_partition_offset;
 313     unsigned body_partitions_count;
 314     int last_key_index;  ///< index of last key frame
 315     uint64_t duration;
 316     AVTimecode tc;       ///< timecode context
 317     AVStream *timecode_track;
 318     int timecode_base;       ///< rounded time code base (25 or 30)
 319     int edit_unit_byte_count; ///< fixed edit unit byte count
 320     uint64_t body_offset;
 321     uint32_t instance_number;
 322     uint8_t umid[16];        ///< unique material identifier
 323     int channel_count;
 324     int signal_standard;
 325     uint32_t tagged_value_count;
 326     AVRational audio_edit_rate;
 327     int store_user_comments;
 328 } MXFContext;
 329
 330 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 331 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 332
 333 /**
 334  * complete key for operation pattern, partitions, and primer pack
 335  */
 336 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 337 static const uint8_t opatom_ul[]                   = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x02,0x01,0x10,0x03,0x00,0x00 };
 338 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 339 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 340 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 341 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 342 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
 343 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
 344 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 345 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 346
 347 /**
 348  * partial key for header metadata
 349  */
 350 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 351 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 352
 353 /**
 354  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 355  */
 356 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 357     // preface set
 358     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 359     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 360     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 361     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 362     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 363     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 364     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 365     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 366     // Identification
 367     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 368     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 369     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 370     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 371     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 372     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 373     // Content Storage
 374     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 375     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 376     // Essence Container Data
 377     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 378     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 379     // Package
 380     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 381     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 382     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 383     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */
 384     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 385     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 386     // Track
 387     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 388     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 389     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 390     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 391     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 392     // Sequence
 393     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 394     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 395     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 396     // Source Clip
 397     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 398     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 399     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 400     // Timecode Component
 401     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 402     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 403     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 404     // File Descriptor
 405     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 406     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 407     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 408     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */
 409     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 410     // Generic Picture Essence Descriptor
 411     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 412     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 413     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 414     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 415     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 416     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 417     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */
 418     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 419     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 420     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 421     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */
 422     // CDCI Picture Essence Descriptor
 423     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 424     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 425     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */
 426     // Generic Sound Essence Descriptor
 427     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 428     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 429     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 430     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 431     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 432     // Index Table Segment
 433     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 434     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 435     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 436     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 437     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 438     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 439     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 440     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 441     // MPEG video Descriptor
 442     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 443     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 444     // Wave Audio Essence Descriptor
 445     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 446     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 447 };
 448
 449 static const MXFLocalTagPair mxf_user_comments_local_tag[] = {
 450     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */
 451     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */
 452     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */
 453 };
 454
 455 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 456 {
 457     avio_write(pb, uuid_base, 12);
 458     avio_wb16(pb, type);
 459     avio_wb16(pb, value);
 460 }
 461
 462 static void mxf_write_umid(AVFormatContext *s, int type)
 463 {
 464     MXFContext *mxf = s->priv_data;
 465     avio_write(s->pb, umid_ul, 13);
 466     avio_wb24(s->pb, mxf->instance_number);
 467     avio_write(s->pb, mxf->umid, 15);
 468     avio_w8(s->pb, type);
 469 }
 470
 471 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 472 {
 473     avio_wb32(pb, ref_count);
 474     avio_wb32(pb, 16);
 475 }
 476
 477 static int klv_ber_length(uint64_t len)
 478 {
 479     if (len < 128)
 480         return 1;
 481     else
 482         return (av_log2(len) >> 3) + 2;
 483 }
 484
 485 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 486 {
 487     // Determine the best BER size
 488     int size;
 489     if (len < 128) {
 490         //short form
 491         avio_w8(pb, len);
 492         return 1;
 493     }
 494
 495     size = (av_log2(len) >> 3) + 1;
 496
 497     // long form
 498     avio_w8(pb, 0x80 + size);
 499     while(size) {
 500         size--;
 501         avio_w8(pb, len >> 8 * size & 0xff);
 502     }
 503     return 0;
 504 }
 505
 506 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 507 {
 508     avio_w8(pb, 0x80 + 3);
 509     avio_wb24(pb, len);
 510 }
 511
 512 static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len)
 513 {
 514     avio_w8(pb, 0x80 + 8);
 515     avio_wb64(pb, len);
 516 }
 517
 518 /*
 519  * Get essence container ul index
 520  */
 521 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 522 {
 523     int i;
 524     for (i = 0; mxf_essence_mappings[i].id; i++)
 525         if (mxf_essence_mappings[i].id == id)
 526             return mxf_essence_mappings[i].index;
 527     return -1;
 528 }
 529
 530 static void mxf_write_primer_pack(AVFormatContext *s)
 531 {
 532     MXFContext *mxf = s->priv_data;
 533     AVIOContext *pb = s->pb;
 534     int local_tag_number, i = 0;
 535
 536     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 537     local_tag_number += mxf->store_user_comments * FF_ARRAY_ELEMS(mxf_user_comments_local_tag);
 538
 539     avio_write(pb, primer_pack_key, 16);
 540     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 541
 542     avio_wb32(pb, local_tag_number); // local_tag num
 543     avio_wb32(pb, 18); // item size, always 18 according to the specs
 544
 545     for (i = 0; i < FF_ARRAY_ELEMS(mxf_local_tag_batch); i++) {
 546         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 547         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 548     }
 549     if (mxf->store_user_comments)
 550         for (i = 0; i < FF_ARRAY_ELEMS(mxf_user_comments_local_tag); i++) {
 551             avio_wb16(pb, mxf_user_comments_local_tag[i].local_tag);
 552             avio_write(pb, mxf_user_comments_local_tag[i].uid, 16);
 553         }
 554 }
 555
 556 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
 557 {
 558     avio_wb16(pb, tag);
 559     avio_wb16(pb, size);
 560 }
 561
 562 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 563 {
 564     avio_write(pb, header_metadata_key, 13);
 565     avio_wb24(pb, value);
 566 }
 567
 568 static void mxf_free(AVFormatContext *s)
 569 {
 570     int i;
 571
 572     for (i = 0; i < s->nb_streams; i++) {
 573         AVStream *st = s->streams[i];
 574         av_freep(&st->priv_data);
 575     }
 576 }
 577
 578 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 579 {
 580     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 581     while (uls->uid[0]) {
 582         if (type == uls->id)
 583             break;
 584         uls++;
 585     }
 586     return uls;
 587 }
 588
 589 //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors
 590 #define DESCRIPTOR_COUNT(essence_container_count) \
 591     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)
 592
 593 static void mxf_write_essence_container_refs(AVFormatContext *s)
 594 {
 595     MXFContext *c = s->priv_data;
 596     AVIOContext *pb = s->pb;
 597     int i;
 598
 599     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));
 600     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 601     for (i = 0; i < c->essence_container_count; i++) {
 602         MXFStreamContext *sc = s->streams[i]->priv_data;
 603         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 604     }
 605
 606     if (c->essence_container_count > 1)
 607         avio_write(pb, multiple_desc_ul, 16);
 608 }
 609
 610 static void mxf_write_preface(AVFormatContext *s)
 611 {
 612     MXFContext *mxf = s->priv_data;
 613     AVIOContext *pb = s->pb;
 614
 615     mxf_write_metadata_key(pb, 0x012f00);
 616     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 617     klv_encode_ber_length(pb, 130 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 618
 619     // write preface set uid
 620     mxf_write_local_tag(pb, 16, 0x3C0A);
 621     mxf_write_uuid(pb, Preface, 0);
 622     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 623
 624     // last modified date
 625     mxf_write_local_tag(pb, 8, 0x3B02);
 626     avio_wb64(pb, mxf->timestamp);
 627
 628     // write version
 629     mxf_write_local_tag(pb, 2, 0x3B05);
 630     avio_wb16(pb, 258); // v1.2
 631
 632     // write identification_refs
 633     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 634     mxf_write_refs_count(pb, 1);
 635     mxf_write_uuid(pb, Identification, 0);
 636
 637     // write content_storage_refs
 638     mxf_write_local_tag(pb, 16, 0x3B03);
 639     mxf_write_uuid(pb, ContentStorage, 0);
 640
 641     // operational pattern
 642     mxf_write_local_tag(pb, 16, 0x3B09);
 643     if (s->oformat == &ff_mxf_opatom_muxer)
 644         avio_write(pb, opatom_ul, 16);
 645     else
 646         avio_write(pb, op1a_ul, 16);
 647
 648     // write essence_container_refs
 649     mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);
 650     mxf_write_essence_container_refs(s);
 651
 652     // write dm_scheme_refs
 653     mxf_write_local_tag(pb, 8, 0x3B0B);
 654     avio_wb64(pb, 0);
 655 }
 656
 657 /*
 658  * Returns the length of the UTF-16 string, in 16-bit characters, that would result
 659  * from decoding the utf-8 string.
 660  */
 661 static uint64_t mxf_utf16len(const char *utf8_str)
 662 {
 663     const uint8_t *q = utf8_str;
 664     uint64_t size = 0;
 665     while (*q) {
 666         uint32_t ch;
 667         GET_UTF8(ch, *q++, goto invalid;)
 668         if (ch < 0x10000)
 669             size++;
 670         else
 671             size += 2;
 672         continue;
 673 invalid:
 674         av_log(NULL, AV_LOG_ERROR, "Invaid UTF8 sequence in mxf_utf16len\n\n");
 675     }
 676     size += 1;
 677     return size;
 678 }
 679
 680 /*
 681  * Returns the calculated length a local tag containing an utf-8 string as utf-16
 682  */
 683 static int mxf_utf16_local_tag_length(const char *utf8_str)
 684 {
 685     uint64_t size;
 686
 687     if (!utf8_str)
 688         return 0;
 689
 690     size = mxf_utf16len(utf8_str);
 691     if (size >= UINT16_MAX/2) {
 692         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 693         return 0;
 694     }
 695
 696     return 4 + size * 2;
 697 }
 698
 699 /*
 700  * Write a local tag containing an utf-8 string as utf-16
 701  */
 702 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
 703 {
 704     uint64_t size = mxf_utf16len(value);
 705
 706     if (size >= UINT16_MAX/2) {
 707         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 708         return;
 709     }
 710
 711     mxf_write_local_tag(pb, size*2, tag);
 712     avio_put_str16be(pb, value);
 713 }
 714
 715 static void mxf_write_identification(AVFormatContext *s)
 716 {
 717     MXFContext *mxf = s->priv_data;
 718     AVIOContext *pb = s->pb;
 719     const char *company = "FFmpeg";
 720     const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
 721     const char *version;
 722     int length;
 723
 724     mxf_write_metadata_key(pb, 0x013000);
 725     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 726
 727     version = s->flags & AVFMT_FLAG_BITEXACT ?
 728         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 729     length = 72 + mxf_utf16_local_tag_length(company) +
 730                   mxf_utf16_local_tag_length(product) +
 731                   mxf_utf16_local_tag_length(version);
 732     klv_encode_ber_length(pb, length);
 733
 734     // write uid
 735     mxf_write_local_tag(pb, 16, 0x3C0A);
 736     mxf_write_uuid(pb, Identification, 0);
 737     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 738
 739     // write generation uid
 740     mxf_write_local_tag(pb, 16, 0x3C09);
 741     mxf_write_uuid(pb, Identification, 1);
 742     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 743     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 744     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 745
 746     // write product uid
 747     mxf_write_local_tag(pb, 16, 0x3C05);
 748     mxf_write_uuid(pb, Identification, 2);
 749
 750     // modification date
 751     mxf_write_local_tag(pb, 8, 0x3C06);
 752     avio_wb64(pb, mxf->timestamp);
 753 }
 754
 755 static void mxf_write_content_storage(AVFormatContext *s)
 756 {
 757     AVIOContext *pb = s->pb;
 758
 759     mxf_write_metadata_key(pb, 0x011800);
 760     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 761     klv_encode_ber_length(pb, 92);
 762
 763     // write uid
 764     mxf_write_local_tag(pb, 16, 0x3C0A);
 765     mxf_write_uuid(pb, ContentStorage, 0);
 766     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 767
 768     // write package reference
 769     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 770     mxf_write_refs_count(pb, 2);
 771     mxf_write_uuid(pb, MaterialPackage, 0);
 772     mxf_write_uuid(pb, SourcePackage, 0);
 773
 774     // write essence container data
 775     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 776     mxf_write_refs_count(pb, 1);
 777     mxf_write_uuid(pb, EssenceContainerData, 0);
 778 }
 779
 780 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 781 {
 782     MXFContext *mxf = s->priv_data;
 783     AVIOContext *pb = s->pb;
 784     MXFStreamContext *sc = st->priv_data;
 785
 786     mxf_write_metadata_key(pb, 0x013b00);
 787     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 788     klv_encode_ber_length(pb, 80);
 789
 790     // write track uid
 791     mxf_write_local_tag(pb, 16, 0x3C0A);
 792     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 793     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 794
 795     // write track id
 796     mxf_write_local_tag(pb, 4, 0x4801);
 797     avio_wb32(pb, st->index+2);
 798
 799     // write track number
 800     mxf_write_local_tag(pb, 4, 0x4804);
 801     if (type == MaterialPackage)
 802         avio_wb32(pb, 0); // track number of material package is 0
 803     else
 804         avio_write(pb, sc->track_essence_element_key + 12, 4);
 805
 806     mxf_write_local_tag(pb, 8, 0x4B01);
 807
 808     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer){
 809         avio_wb32(pb, mxf->tc.rate.num);
 810         avio_wb32(pb, mxf->tc.rate.den);
 811     } else {
 812         avio_wb32(pb, mxf->time_base.den);
 813         avio_wb32(pb, mxf->time_base.num);
 814     }
 815
 816     // write origin
 817     mxf_write_local_tag(pb, 8, 0x4B02);
 818     avio_wb64(pb, 0);
 819
 820     // write sequence refs
 821     mxf_write_local_tag(pb, 16, 0x4803);
 822     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 823 }
 824
 825 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 };
 826
 827 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 828 {
 829     MXFContext *mxf = s->priv_data;
 830     AVIOContext *pb = s->pb;
 831
 832     // find data define uls
 833     mxf_write_local_tag(pb, 16, 0x0201);
 834     if (st == mxf->timecode_track)
 835         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 836     else {
 837         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 838         avio_write(pb, data_def_ul->uid, 16);
 839     }
 840
 841     // write duration
 842     mxf_write_local_tag(pb, 8, 0x0202);
 843
 844     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
 845         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
 846     } else {
 847         avio_wb64(pb, mxf->duration);
 848     }
 849 }
 850
 851 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 852 {
 853     MXFContext *mxf = s->priv_data;
 854     AVIOContext *pb = s->pb;
 855     enum MXFMetadataSetType component;
 856
 857     mxf_write_metadata_key(pb, 0x010f00);
 858     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 859     klv_encode_ber_length(pb, 80);
 860
 861     mxf_write_local_tag(pb, 16, 0x3C0A);
 862     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 863
 864     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 865     mxf_write_common_fields(s, st);
 866
 867     // write structural component
 868     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 869     mxf_write_refs_count(pb, 1);
 870     if (st == mxf->timecode_track)
 871         component = TimecodeComponent;
 872     else
 873         component = SourceClip;
 874     if (type == SourcePackage)
 875         component += TypeBottom;
 876     mxf_write_uuid(pb, component, st->index);
 877 }
 878
 879 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 880 {
 881     MXFContext *mxf = s->priv_data;
 882     AVIOContext *pb = s->pb;
 883
 884     mxf_write_metadata_key(pb, 0x011400);
 885     klv_encode_ber_length(pb, 75);
 886
 887     // UID
 888     mxf_write_local_tag(pb, 16, 0x3C0A);
 889     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
 890                    TimecodeComponent + TypeBottom, st->index);
 891
 892     mxf_write_common_fields(s, st);
 893
 894     // Start Time Code
 895     mxf_write_local_tag(pb, 8, 0x1501);
 896     avio_wb64(pb, mxf->tc.start);
 897
 898     // Rounded Time Code Base
 899     mxf_write_local_tag(pb, 2, 0x1502);
 900     avio_wb16(pb, mxf->timecode_base);
 901
 902     // Drop Frame
 903     mxf_write_local_tag(pb, 1, 0x1503);
 904     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 905 }
 906
 907 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 908 {
 909     AVIOContext *pb = s->pb;
 910     int i;
 911
 912     mxf_write_metadata_key(pb, 0x011100);
 913     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 914     klv_encode_ber_length(pb, 108);
 915
 916     // write uid
 917     mxf_write_local_tag(pb, 16, 0x3C0A);
 918     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 919
 920     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 921     mxf_write_common_fields(s, st);
 922
 923     // write start_position
 924     mxf_write_local_tag(pb, 8, 0x1201);
 925     avio_wb64(pb, 0);
 926
 927     // write source package uid, end of the reference
 928     mxf_write_local_tag(pb, 32, 0x1101);
 929     if (type == SourcePackage) {
 930         for (i = 0; i < 4; i++)
 931             avio_wb64(pb, 0);
 932     } else
 933         mxf_write_umid(s, 1);
 934
 935     // write source track id
 936     mxf_write_local_tag(pb, 4, 0x1102);
 937     if (type == SourcePackage)
 938         avio_wb32(pb, 0);
 939     else
 940         avio_wb32(pb, st->index+2);
 941 }
 942
 943 static void mxf_write_multi_descriptor(AVFormatContext *s)
 944 {
 945     MXFContext *mxf = s->priv_data;
 946     AVIOContext *pb = s->pb;
 947     const uint8_t *ul;
 948     int i;
 949
 950     mxf_write_metadata_key(pb, 0x014400);
 951     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 952     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
 953
 954     mxf_write_local_tag(pb, 16, 0x3C0A);
 955     mxf_write_uuid(pb, MultipleDescriptor, 0);
 956     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 957
 958     // write sample rate
 959     mxf_write_local_tag(pb, 8, 0x3001);
 960     avio_wb32(pb, mxf->time_base.den);
 961     avio_wb32(pb, mxf->time_base.num);
 962
 963     // write essence container ul
 964     mxf_write_local_tag(pb, 16, 0x3004);
 965     if (mxf->essence_container_count > 1)
 966         ul = multiple_desc_ul;
 967     else {
 968         MXFStreamContext *sc = s->streams[0]->priv_data;
 969         ul = mxf_essence_container_uls[sc->index].container_ul;
 970     }
 971     avio_write(pb, ul, 16);
 972
 973     // write sub descriptor refs
 974     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 975     mxf_write_refs_count(pb, s->nb_streams);
 976     for (i = 0; i < s->nb_streams; i++)
 977         mxf_write_uuid(pb, SubDescriptor, i);
 978 }
 979
 980 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 981 {
 982     MXFContext *mxf = s->priv_data;
 983     MXFStreamContext *sc = st->priv_data;
 984     AVIOContext *pb = s->pb;
 985
 986     avio_write(pb, key, 16);
 987     klv_encode_ber4_length(pb, size+20+8+12+20);
 988
 989     mxf_write_local_tag(pb, 16, 0x3C0A);
 990     mxf_write_uuid(pb, SubDescriptor, st->index);
 991
 992     mxf_write_local_tag(pb, 4, 0x3006);
 993     avio_wb32(pb, st->index+2);
 994
 995     mxf_write_local_tag(pb, 8, 0x3001);
 996     avio_wb32(pb, mxf->time_base.den);
 997     avio_wb32(pb, mxf->time_base.num);
 998
 999     mxf_write_local_tag(pb, 16, 0x3004);
1000     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1001 }
1002
1003 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
1004 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
1005 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
1006 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
1007 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
1008
1009 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1010 {
1011     MXFStreamContext *sc = st->priv_data;
1012     AVIOContext *pb = s->pb;
1013     int stored_height = (st->codec->height+15)/16*16;
1014     int display_height;
1015     int f1, f2;
1016     unsigned desc_size = size+8+8+8+8+8+8+8+5+16+4+12+20+5;
1017     if (sc->interlaced && sc->field_dominance)
1018         desc_size += 5;
1019     if (sc->signal_standard)
1020         desc_size += 5;
1021
1022     mxf_write_generic_desc(s, st, key, desc_size);
1023
1024     mxf_write_local_tag(pb, 4, 0x3203);
1025     avio_wb32(pb, st->codec->width);
1026
1027     mxf_write_local_tag(pb, 4, 0x3202);
1028     avio_wb32(pb, stored_height>>sc->interlaced);
1029
1030     mxf_write_local_tag(pb, 4, 0x3209);
1031     avio_wb32(pb, st->codec->width);
1032
1033     if (st->codec->height == 608) // PAL + VBI
1034         display_height = 576;
1035     else if (st->codec->height == 512)  // NTSC + VBI
1036         display_height = 486;
1037     else
1038         display_height = st->codec->height;
1039
1040     mxf_write_local_tag(pb, 4, 0x3208);
1041     avio_wb32(pb, display_height>>sc->interlaced);
1042
1043     // presentation Y offset
1044     mxf_write_local_tag(pb, 4, 0x320B);
1045     avio_wb32(pb, (st->codec->height - display_height)>>sc->interlaced);
1046
1047     // component depth
1048     mxf_write_local_tag(pb, 4, 0x3301);
1049     avio_wb32(pb, sc->component_depth);
1050
1051     // horizontal subsampling
1052     mxf_write_local_tag(pb, 4, 0x3302);
1053     avio_wb32(pb, sc->h_chroma_sub_sample);
1054
1055     // color siting
1056     mxf_write_local_tag(pb, 1, 0x3303);
1057     avio_w8(pb, sc->color_siting);
1058
1059     if (sc->signal_standard) {
1060         mxf_write_local_tag(pb, 1, 0x3215);
1061         avio_w8(pb, sc->signal_standard);
1062     }
1063
1064     // frame layout
1065     mxf_write_local_tag(pb, 1, 0x320C);
1066     avio_w8(pb, sc->interlaced);
1067
1068     // video line map
1069     switch (st->codec->height) {
1070     case  576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
1071     case  608: f1 =  7; f2 = 320; break;
1072     case  480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
1073     case  512: f1 =  7; f2 = 270; break;
1074     case  720: f1 = 26; f2 =   0; break; // progressive
1075     case 1080: f1 = 21; f2 = 584; break;
1076     default:   f1 =  0; f2 =   0; break;
1077     }
1078
1079     if (!sc->interlaced) {
1080         f2  = 0;
1081         f1 *= 2;
1082     }
1083
1084
1085     mxf_write_local_tag(pb, 16, 0x320D);
1086     avio_wb32(pb, 2);
1087     avio_wb32(pb, 4);
1088     avio_wb32(pb, f1);
1089     avio_wb32(pb, f2);
1090
1091     mxf_write_local_tag(pb, 8, 0x320E);
1092     avio_wb32(pb, sc->aspect_ratio.num);
1093     avio_wb32(pb, sc->aspect_ratio.den);
1094
1095     mxf_write_local_tag(pb, 16, 0x3201);
1096     avio_write(pb, *sc->codec_ul, 16);
1097
1098     if (sc->interlaced && sc->field_dominance) {
1099         mxf_write_local_tag(pb, 1, 0x3212);
1100         avio_w8(pb, sc->field_dominance);
1101     }
1102
1103 }
1104
1105 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
1106 {
1107     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
1108 }
1109
1110 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1111 {
1112     AVIOContext *pb = s->pb;
1113     MXFStreamContext *sc = st->priv_data;
1114     int profile_and_level = (st->codec->profile<<4) | st->codec->level;
1115
1116     if (st->codec->codec_id != AV_CODEC_ID_H264) {
1117         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
1118
1119         // bit rate
1120         mxf_write_local_tag(pb, 4, 0x8000);
1121         avio_wb32(pb, sc->video_bit_rate);
1122
1123         // profile and level
1124         mxf_write_local_tag(pb, 1, 0x8007);
1125         if (!st->codec->profile)
1126             profile_and_level |= 0x80; // escape bit
1127         avio_w8(pb, profile_and_level);
1128     } else {
1129         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);
1130     }
1131 }
1132
1133 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1134 {
1135     AVIOContext *pb = s->pb;
1136     MXFContext *mxf = s->priv_data;
1137     int show_warnings = !mxf->footer_partition_offset;
1138     int duration_size = 0;
1139
1140     if (s->oformat == &ff_mxf_opatom_muxer)
1141         duration_size = 12;
1142
1143     mxf_write_generic_desc(s, st, key, size+duration_size+5+12+8+8);
1144
1145     if (duration_size > 0){
1146         mxf_write_local_tag(pb, 8, 0x3002);
1147         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
1148     }
1149
1150     // audio locked
1151     mxf_write_local_tag(pb, 1, 0x3D02);
1152     avio_w8(pb, 1);
1153
1154     // write audio sampling rate
1155     mxf_write_local_tag(pb, 8, 0x3D03);
1156     avio_wb32(pb, st->codec->sample_rate);
1157     avio_wb32(pb, 1);
1158
1159     mxf_write_local_tag(pb, 4, 0x3D07);
1160     if (mxf->channel_count == -1) {
1161         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))
1162             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");
1163         avio_wb32(pb, st->codec->channels);
1164     } else if (s->oformat == &ff_mxf_d10_muxer) {
1165         if (show_warnings && (mxf->channel_count < st->codec->channels))
1166             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1167         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1168             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");
1169         avio_wb32(pb, mxf->channel_count);
1170     } else {
1171         if (show_warnings && mxf->channel_count != -1 && s->oformat != &ff_mxf_opatom_muxer)
1172             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");
1173         avio_wb32(pb, st->codec->channels);
1174     }
1175
1176     mxf_write_local_tag(pb, 4, 0x3D01);
1177     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));
1178 }
1179
1180 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1181 {
1182     AVIOContext *pb = s->pb;
1183
1184     mxf_write_generic_sound_common(s, st, key, size+6+8);
1185
1186     mxf_write_local_tag(pb, 2, 0x3D0A);
1187     avio_wb16(pb, st->codec->block_align);
1188
1189     // avg bytes per sec
1190     mxf_write_local_tag(pb, 4, 0x3D09);
1191     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);
1192 }
1193
1194 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1195 {
1196     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
1197 }
1198
1199 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1200 {
1201     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
1202 }
1203
1204 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1205 {
1206     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
1207 }
1208
1209 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 };
1210
1211 static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)
1212 {
1213     MXFContext *mxf = s->priv_data;
1214     AVIOContext *pb = s->pb;
1215     int name_size = mxf_utf16_local_tag_length(name);
1216     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);
1217
1218     if (!name_size || indirect_value_size == 13)
1219         return 1;
1220
1221     mxf_write_metadata_key(pb, 0x013f00);
1222     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);
1223
1224     // write instance UID
1225     mxf_write_local_tag(pb, 16, 0x3C0A);
1226     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);
1227
1228     // write name
1229     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name
1230
1231     // write indirect value
1232     mxf_write_local_tag(pb, indirect_value_size, 0x5003);
1233     avio_write(pb, mxf_indirect_value_utf16le, 17);
1234     avio_put_str16le(pb, value);
1235
1236     mxf->tagged_value_count++;
1237     return 0;
1238 }
1239
1240 static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)
1241 {
1242     MXFContext *mxf = s->priv_data;
1243     AVDictionaryEntry *t = NULL;
1244     int count = 0;
1245
1246     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {
1247         if (mxf->tagged_value_count >= UINT16_MAX) {
1248             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");
1249             return count;
1250         }
1251
1252         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)
1253             count++;
1254     }
1255     return count;
1256 }
1257
1258 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type, const char *package_name)
1259 {
1260     MXFContext *mxf = s->priv_data;
1261     AVIOContext *pb = s->pb;
1262     int i, track_count = s->nb_streams+1;
1263     int name_size = mxf_utf16_local_tag_length(package_name);
1264     int user_comment_count = 0;
1265
1266     if (type == MaterialPackage) {
1267         if (mxf->store_user_comments)
1268             user_comment_count = mxf_write_user_comments(s, s->metadata);
1269         mxf_write_metadata_key(pb, 0x013600);
1270         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1271         klv_encode_ber_length(pb, 92 + name_size + (16*track_count) + (16*user_comment_count) + 12LL*mxf->store_user_comments);
1272     } else {
1273         mxf_write_metadata_key(pb, 0x013700);
1274         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1275         klv_encode_ber_length(pb, 112 + name_size + (16*track_count) + 12LL*mxf->store_user_comments); // 20 bytes length for descriptor reference
1276     }
1277
1278     // write uid
1279     mxf_write_local_tag(pb, 16, 0x3C0A);
1280     mxf_write_uuid(pb, type, 0);
1281     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
1282     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1283
1284     // write package umid
1285     mxf_write_local_tag(pb, 32, 0x4401);
1286     mxf_write_umid(s, type == SourcePackage);
1287     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1288
1289     // package name
1290     if (name_size)
1291         mxf_write_local_tag_utf16(pb, 0x4402, package_name);
1292
1293     // package creation date
1294     mxf_write_local_tag(pb, 8, 0x4405);
1295     avio_wb64(pb, mxf->timestamp);
1296
1297     // package modified date
1298     mxf_write_local_tag(pb, 8, 0x4404);
1299     avio_wb64(pb, mxf->timestamp);
1300
1301     // write track refs
1302     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
1303     mxf_write_refs_count(pb, track_count);
1304     mxf_write_uuid(pb, type == MaterialPackage ? Track :
1305                    Track + TypeBottom, -1); // timecode track
1306     for (i = 0; i < s->nb_streams; i++)
1307         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
1308
1309     // write user comment refs
1310     if (mxf->store_user_comments) {
1311         mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);
1312         mxf_write_refs_count(pb, user_comment_count);
1313         for (i = 0; i < user_comment_count; i++)
1314             mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);
1315     }
1316
1317     // write multiple descriptor reference
1318     if (type == SourcePackage) {
1319         mxf_write_local_tag(pb, 16, 0x4701);
1320         if (s->nb_streams > 1) {
1321             mxf_write_uuid(pb, MultipleDescriptor, 0);
1322             mxf_write_multi_descriptor(s);
1323         } else
1324             mxf_write_uuid(pb, SubDescriptor, 0);
1325     }
1326
1327     // write timecode track
1328     mxf_write_track(s, mxf->timecode_track, type);
1329     mxf_write_sequence(s, mxf->timecode_track, type);
1330     mxf_write_timecode_component(s, mxf->timecode_track, type);
1331
1332     for (i = 0; i < s->nb_streams; i++) {
1333         AVStream *st = s->streams[i];
1334         mxf_write_track(s, st, type);
1335         mxf_write_sequence(s, st, type);
1336         mxf_write_structural_component(s, st, type);
1337
1338         if (type == SourcePackage) {
1339             MXFStreamContext *sc = st->priv_data;
1340             mxf_essence_container_uls[sc->index].write_desc(s, st);
1341         }
1342     }
1343 }
1344
1345 static int mxf_write_essence_container_data(AVFormatContext *s)
1346 {
1347     AVIOContext *pb = s->pb;
1348
1349     mxf_write_metadata_key(pb, 0x012300);
1350     klv_encode_ber_length(pb, 72);
1351
1352     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1353     mxf_write_uuid(pb, EssenceContainerData, 0);
1354
1355     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1356     mxf_write_umid(s, 1);
1357
1358     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1359     avio_wb32(pb, 1);
1360
1361     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1362     avio_wb32(pb, 2);
1363
1364     return 0;
1365 }
1366
1367 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1368 {
1369     const char *material_package_name = NULL;
1370     const char *file_package_name = NULL;
1371     AVDictionaryEntry *entry = NULL;
1372     AVStream *st = NULL;
1373     int i;
1374
1375     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
1376        material_package_name = entry->value;
1377
1378     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
1379         file_package_name = entry->value;
1380     } else {
1381         /* check if any of the streams contain a file_package_name */
1382         for (i = 0; i < s->nb_streams; i++) {
1383             st = s->streams[i];
1384             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
1385                 file_package_name = entry->value;
1386                 break;
1387             }
1388         }
1389     }
1390
1391     mxf_write_preface(s);
1392     mxf_write_identification(s);
1393     mxf_write_content_storage(s);
1394     mxf_write_package(s, MaterialPackage, material_package_name);
1395     mxf_write_package(s, SourcePackage, file_package_name);
1396     mxf_write_essence_container_data(s);
1397     return 0;
1398 }
1399
1400 static unsigned klv_fill_size(uint64_t size)
1401 {
1402     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1403     if (pad < 20) // smallest fill item possible
1404         return pad + KAG_SIZE;
1405     else
1406         return pad & (KAG_SIZE-1);
1407 }
1408
1409 static void mxf_write_index_table_segment(AVFormatContext *s)
1410 {
1411     MXFContext *mxf = s->priv_data;
1412     AVIOContext *pb = s->pb;
1413     int i, j, temporal_reordering = 0;
1414     int key_index = mxf->last_key_index;
1415
1416     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1417
1418     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1419         return;
1420
1421     avio_write(pb, index_table_segment_key, 16);
1422
1423     if (mxf->edit_unit_byte_count) {
1424         klv_encode_ber_length(pb, 80);
1425     } else {
1426         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +
1427                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));
1428     }
1429
1430     // instance id
1431     mxf_write_local_tag(pb, 16, 0x3C0A);
1432     mxf_write_uuid(pb, IndexTableSegment, 0);
1433
1434     // index edit rate
1435     mxf_write_local_tag(pb, 8, 0x3F0B);
1436     avio_wb32(pb, mxf->time_base.den);
1437     avio_wb32(pb, mxf->time_base.num);
1438
1439     // index start position
1440     mxf_write_local_tag(pb, 8, 0x3F0C);
1441     avio_wb64(pb, mxf->last_indexed_edit_unit);
1442
1443     // index duration
1444     mxf_write_local_tag(pb, 8, 0x3F0D);
1445     if (mxf->edit_unit_byte_count)
1446         avio_wb64(pb, 0); // index table covers whole container
1447     else
1448         avio_wb64(pb, mxf->edit_units_count);
1449
1450     // edit unit byte count
1451     mxf_write_local_tag(pb, 4, 0x3F05);
1452     avio_wb32(pb, mxf->edit_unit_byte_count);
1453
1454     // index sid
1455     mxf_write_local_tag(pb, 4, 0x3F06);
1456     avio_wb32(pb, 2);
1457
1458     // body sid
1459     mxf_write_local_tag(pb, 4, 0x3F07);
1460     avio_wb32(pb, 1);
1461
1462     if (!mxf->edit_unit_byte_count) {
1463         // real slice count - 1
1464         mxf_write_local_tag(pb, 1, 0x3F08);
1465         avio_w8(pb, mxf->slice_count);
1466
1467         // delta entry array
1468         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1469         avio_wb32(pb, s->nb_streams+1); // num of entries
1470         avio_wb32(pb, 6);               // size of one entry
1471         // write system item delta entry
1472         avio_w8(pb, 0);
1473         avio_w8(pb, 0); // slice entry
1474         avio_wb32(pb, 0); // element delta
1475         for (i = 0; i < s->nb_streams; i++) {
1476             AVStream *st = s->streams[i];
1477             MXFStreamContext *sc = st->priv_data;
1478             avio_w8(pb, sc->temporal_reordering);
1479             if (sc->temporal_reordering)
1480                 temporal_reordering = 1;
1481             if (i == 0) { // video track
1482                 avio_w8(pb, 0); // slice number
1483                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1484             } else { // audio track
1485                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1486                 audio_frame_size += klv_fill_size(audio_frame_size);
1487                 avio_w8(pb, 1);
1488                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1489             }
1490         }
1491
1492         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1493         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1494         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
1495
1496         for (i = 0; i < mxf->edit_units_count; i++) {
1497             int temporal_offset = 0;
1498
1499             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1500                 mxf->last_key_index = key_index;
1501                 key_index = i;
1502             }
1503
1504             if (temporal_reordering) {
1505                 int pic_num_in_gop = i - key_index;
1506                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1507                     for (j = key_index; j < mxf->edit_units_count; j++) {
1508                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1509                             break;
1510                     }
1511                     if (j == mxf->edit_units_count)
1512                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1513                     temporal_offset = j - key_index - pic_num_in_gop;
1514                 }
1515             }
1516             avio_w8(pb, temporal_offset);
1517
1518             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1519                 avio_w8(pb, mxf->last_key_index - i);
1520             } else {
1521                 avio_w8(pb, key_index - i); // key frame offset
1522                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1523                     mxf->last_key_index = key_index;
1524             }
1525
1526             if (!(mxf->index_entries[i].flags & 0x33) && // I frame
1527                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1528                 mxf->index_entries[i].flags |= 0x80; // random access
1529             avio_w8(pb, mxf->index_entries[i].flags);
1530             // stream offset
1531             avio_wb64(pb, mxf->index_entries[i].offset);
1532             if (s->nb_streams > 1)
1533                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1534         }
1535
1536         mxf->last_key_index = key_index - mxf->edit_units_count;
1537         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1538         mxf->edit_units_count = 0;
1539     }
1540 }
1541
1542 static void mxf_write_klv_fill(AVFormatContext *s)
1543 {
1544     unsigned pad = klv_fill_size(avio_tell(s->pb));
1545     if (pad) {
1546         avio_write(s->pb, klv_fill_key, 16);
1547         pad -= 16 + 4;
1548         klv_encode_ber4_length(s->pb, pad);
1549         ffio_fill(s->pb, 0, pad);
1550         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1551     }
1552 }
1553
1554 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1555                                 int indexsid,
1556                                 const uint8_t *key, int write_metadata)
1557 {
1558     MXFContext *mxf = s->priv_data;
1559     AVIOContext *pb = s->pb;
1560     int64_t header_byte_count_offset;
1561     unsigned index_byte_count = 0;
1562     uint64_t partition_offset = avio_tell(pb);
1563     int err;
1564
1565     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1566         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1567             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1568     else if (mxf->edit_unit_byte_count && indexsid)
1569         index_byte_count = 80;
1570
1571     if (index_byte_count) {
1572         // add encoded ber length
1573         index_byte_count += 16 + klv_ber_length(index_byte_count);
1574         index_byte_count += klv_fill_size(index_byte_count);
1575     }
1576
1577     if (key && !memcmp(key, body_partition_key, 16)) {
1578         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1579                                      sizeof(*mxf->body_partition_offset))) < 0) {
1580             mxf->body_partitions_count = 0;
1581             return err;
1582         }
1583         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1584     }
1585
1586     // write klv
1587     if (key)
1588         avio_write(pb, key, 16);
1589     else
1590         avio_write(pb, body_partition_key, 16);
1591
1592     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1593
1594     // write partition value
1595     avio_wb16(pb, 1); // majorVersion
1596     avio_wb16(pb, 2); // minorVersion
1597     avio_wb32(pb, KAG_SIZE); // KAGSize
1598
1599     avio_wb64(pb, partition_offset); // ThisPartition
1600
1601     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1602         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1603     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1604         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1605     else
1606         avio_wb64(pb, 0);
1607
1608     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1609
1610     // set offset
1611     header_byte_count_offset = avio_tell(pb);
1612     avio_wb64(pb, 0); // headerByteCount, update later
1613
1614     // indexTable
1615     avio_wb64(pb, index_byte_count); // indexByteCount
1616     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1617
1618     // BodyOffset
1619     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
1620         avio_wb64(pb, mxf->body_offset);
1621     else
1622         avio_wb64(pb, 0);
1623
1624     avio_wb32(pb, bodysid); // bodySID
1625
1626     // operational pattern
1627     if (s->oformat == &ff_mxf_opatom_muxer)
1628         avio_write(pb, opatom_ul, 16);
1629     else
1630         avio_write(pb, op1a_ul, 16);
1631
1632     // essence container
1633     mxf_write_essence_container_refs(s);
1634
1635     if (write_metadata) {
1636         // mark the start of the headermetadata and calculate metadata size
1637         int64_t pos, start;
1638         unsigned header_byte_count;
1639
1640         mxf_write_klv_fill(s);
1641         start = avio_tell(s->pb);
1642         mxf_write_primer_pack(s);
1643         mxf_write_header_metadata_sets(s);
1644         pos = avio_tell(s->pb);
1645         header_byte_count = pos - start + klv_fill_size(pos);
1646
1647         // update header_byte_count
1648         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1649         avio_wb64(pb, header_byte_count);
1650         avio_seek(pb, pos, SEEK_SET);
1651     }
1652
1653     if(key)
1654         avio_flush(pb);
1655
1656     return 0;
1657 }
1658
1659 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,
1660 AVPacket *pkt)
1661 {
1662     MXFContext *mxf = s->priv_data;
1663     MXFStreamContext *sc = st->priv_data;
1664     int i, cid;
1665     uint8_t* header_cid;
1666     int frame_size = 0;
1667
1668     if (mxf->header_written)
1669         return 1;
1670
1671     if (pkt->size < 43)
1672         return -1;
1673
1674     header_cid = pkt->data + 0x28;
1675     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];
1676
1677     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)
1678         return -1;
1679     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)
1680         return AVERROR_INVALIDDATA;
1681
1682     switch (cid) {
1683     case 1235:
1684         sc->index = 24;
1685         sc->component_depth = 10;
1686         break;
1687     case 1237:
1688         sc->index = 25;
1689         break;
1690     case 1238:
1691         sc->index = 26;
1692         break;
1693     case 1241:
1694         sc->index = 27;
1695         sc->component_depth = 10;
1696         break;
1697     case 1242:
1698         sc->index = 28;
1699         break;
1700     case 1243:
1701         sc->index = 29;
1702         break;
1703     case 1250:
1704         sc->index = 30;
1705         sc->component_depth = 10;
1706         break;
1707     case 1251:
1708         sc->index = 31;
1709         break;
1710     case 1252:
1711         sc->index = 32;
1712         break;
1713     case 1253:
1714         sc->index = 33;
1715         break;
1716     default:
1717         return -1;
1718     }
1719
1720     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1721     sc->aspect_ratio = (AVRational){ 16, 9 };
1722
1723     if(s->oformat == &ff_mxf_opatom_muxer){
1724         mxf->edit_unit_byte_count = frame_size;
1725         return 1;
1726     }
1727
1728     mxf->edit_unit_byte_count = KAG_SIZE;
1729     for (i = 0; i < s->nb_streams; i++) {
1730         AVStream *st = s->streams[i];
1731         MXFStreamContext *sc = st->priv_data;
1732         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1733             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1734             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1735         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1736             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1737             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1738         }
1739     }
1740
1741     return 1;
1742 }
1743
1744 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1745 {
1746     MXFContext *mxf = s->priv_data;
1747     MXFStreamContext *sc = st->priv_data;
1748     uint8_t *vs_pack, *vsc_pack;
1749     int i, ul_index, frame_size, stype, pal;
1750
1751     if (mxf->header_written)
1752         return 1;
1753
1754     // Check for minimal frame size
1755     if (pkt->size < 120000)
1756         return -1;
1757
1758     vs_pack  = pkt->data + 80*5 + 48;
1759     vsc_pack = pkt->data + 80*5 + 53;
1760     stype    = vs_pack[3] & 0x1f;
1761     pal      = (vs_pack[3] >> 5) & 0x1;
1762
1763     if ((vs_pack[2] & 0x07) == 0x02)
1764         sc->aspect_ratio = (AVRational){ 16, 9 };
1765     else
1766         sc->aspect_ratio = (AVRational){ 4, 3 };
1767
1768     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
1769     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
1770     // and set field dominance accordingly
1771     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
1772
1773     switch (stype) {
1774     case 0x18: // DV100 720p
1775         ul_index = 6 + pal;
1776         frame_size = pal ? 288000 : 240000;
1777         if (sc->interlaced) {
1778             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
1779             sc->interlaced = 0;
1780         }
1781         break;
1782     case 0x14: // DV100 1080i
1783         ul_index = 4 + pal;
1784         frame_size = pal ? 576000 : 480000;
1785         break;
1786     case 0x04: // DV50
1787         ul_index = 2 + pal;
1788         frame_size = pal ? 288000 : 240000;
1789         break;
1790     default: // DV25
1791         ul_index = 0 + pal;
1792         frame_size = pal ? 144000 : 120000;
1793     }
1794
1795     sc->index = ul_index + 16;
1796     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
1797
1798     if(s->oformat == &ff_mxf_opatom_muxer) {
1799         mxf->edit_unit_byte_count = frame_size;
1800         return 1;
1801     }
1802
1803     mxf->edit_unit_byte_count = KAG_SIZE;
1804     for (i = 0; i < s->nb_streams; i++) {
1805         AVStream *st = s->streams[i];
1806         MXFStreamContext *sc = st->priv_data;
1807         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1808             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1809             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1810         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1811             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1812             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1813         }
1814     }
1815
1816     return 1;
1817 }
1818
1819 static const struct {
1820     UID uid;
1821     int frame_size;
1822     int profile;
1823     uint8_t interlaced;
1824 } mxf_h264_codec_uls[] = {
1825     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra
1826     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60
1827     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50
1828     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30
1829     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25
1830     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60
1831     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50
1832     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra
1833     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60
1834     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50
1835     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30
1836     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25
1837     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60
1838     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50
1839 };
1840
1841 static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
1842                                 AVPacket *pkt, MXFIndexEntry *e)
1843 {
1844     MXFContext *mxf = s->priv_data;
1845     MXFStreamContext *sc = st->priv_data;
1846     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);
1847     const uint8_t *buf = pkt->data;
1848     const uint8_t *buf_end = pkt->data + pkt->size;
1849     uint32_t state = -1;
1850     int extra_size = 512; // support AVC Intra files without SPS/PPS header
1851     int i, frame_size;
1852     uint8_t uid_found;
1853
1854     if (pkt->size > extra_size)
1855         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header
1856
1857     for (;;) {
1858         buf = avpriv_find_start_code(buf, buf_end, &state);
1859         if (buf >= buf_end)
1860             break;
1861         --buf;
1862         switch (state & 0x1f) {
1863         case NAL_SPS:
1864             st->codec->profile = buf[1];
1865             e->flags |= 0x40;
1866             break;
1867         case NAL_PPS:
1868             if (e->flags & 0x40) { // sequence header present
1869                 e->flags |= 0x80; // random access
1870                 extra_size = 0;
1871                 buf = buf_end;
1872             }
1873             break;
1874         default:
1875             break;
1876         }
1877     }
1878
1879     if (mxf->header_written)
1880         return 1;
1881
1882     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD
1883     sc->component_depth = 10; // AVC Intra is always 10 Bit
1884     sc->interlaced = st->codec->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;
1885     if (sc->interlaced)
1886         sc->field_dominance = 1; // top field first is mandatory for AVC Intra
1887
1888     uid_found = 0;
1889     frame_size = pkt->size + extra_size;
1890     for (i = 0; i < mxf_h264_num_codec_uls; i++) {
1891         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {
1892             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1893             return 1;
1894         } else if (st->codec->profile == mxf_h264_codec_uls[i].profile) {
1895             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1896             uid_found = 1;
1897         }
1898     }
1899
1900     if (!uid_found) {
1901         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");
1902         return 0;
1903     }
1904
1905     return 1;
1906 }
1907
1908 static const UID mxf_mpeg2_codec_uls[] = {
1909     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1910     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1911     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1912     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1913     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1914     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1915     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1916     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1917     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
1918     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
1919 };
1920
1921 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1922 {
1923     int long_gop = 1;
1924
1925     if (avctx->profile == 4) { // Main
1926         if (avctx->level == 8) // Main
1927             return &mxf_mpeg2_codec_uls[0+long_gop];
1928         else if (avctx->level == 4) // High
1929             return &mxf_mpeg2_codec_uls[4+long_gop];
1930         else if (avctx->level == 6) // High 14
1931             return &mxf_mpeg2_codec_uls[8+long_gop];
1932     } else if (avctx->profile == 0) { // 422
1933         if (avctx->level == 5) // Main
1934             return &mxf_mpeg2_codec_uls[2+long_gop];
1935         else if (avctx->level == 2) // High
1936             return &mxf_mpeg2_codec_uls[6+long_gop];
1937     }
1938     return NULL;
1939 }
1940
1941 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
1942                                  AVPacket *pkt, MXFIndexEntry *e)
1943 {
1944     MXFStreamContext *sc = st->priv_data;
1945     uint32_t c = -1;
1946     int i;
1947
1948     for(i = 0; i < pkt->size - 4; i++) {
1949         c = (c<<8) + pkt->data[i];
1950         if (c == 0x1b5) {
1951             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1952                 st->codec->profile = pkt->data[i+1] & 0x07;
1953                 st->codec->level   = pkt->data[i+2] >> 4;
1954             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1955                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1956                 if (sc->interlaced)
1957                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
1958                 break;
1959             }
1960         } else if (c == 0x1b8) { // gop
1961             if (pkt->data[i+4]>>6 & 0x01) { // closed
1962                 sc->closed_gop = 1;
1963                 if (e->flags & 0x40) // sequence header present
1964                     e->flags |= 0x80; // random access
1965             }
1966         } else if (c == 0x1b3) { // seq
1967             e->flags |= 0x40;
1968             switch ((pkt->data[i+4]>>4) & 0xf) {
1969             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1970             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1971             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1972             default:
1973                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1974                           st->codec->width, st->codec->height, 1024*1024);
1975             }
1976         } else if (c == 0x100) { // pic
1977             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1978             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
1979             if (pict_type == 2) { // P frame
1980                 e->flags |= 0x22;
1981                 sc->closed_gop = 0; // reset closed gop, don't matter anymore
1982             } else if (pict_type == 3) { // B frame
1983                 if (sc->closed_gop)
1984                     e->flags |= 0x13; // only backward prediction
1985                 else
1986                     e->flags |= 0x33;
1987                 sc->temporal_reordering = -1;
1988             } else if (!pict_type) {
1989                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1990                 return 0;
1991             }
1992         }
1993     }
1994     if (s->oformat != &ff_mxf_d10_muxer)
1995         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1996     return !!sc->codec_ul;
1997 }
1998
1999 static uint64_t mxf_parse_timestamp(time_t timestamp)
2000 {
2001     struct tm tmbuf;
2002     struct tm *time = gmtime_r(&timestamp, &tmbuf);
2003     if (!time)
2004         return 0;
2005     return (uint64_t)(time->tm_year+1900) << 48 |
2006            (uint64_t)(time->tm_mon+1)     << 40 |
2007            (uint64_t) time->tm_mday       << 32 |
2008                       time->tm_hour       << 24 |
2009                       time->tm_min        << 16 |
2010                       time->tm_sec        << 8;
2011 }
2012
2013 static void mxf_gen_umid(AVFormatContext *s)
2014 {
2015     MXFContext *mxf = s->priv_data;
2016     uint32_t seed = av_get_random_seed();
2017     uint64_t umid = seed + 0x5294713400000000LL;
2018
2019     AV_WB64(mxf->umid  , umid);
2020     AV_WB64(mxf->umid+8, umid>>8);
2021
2022     mxf->instance_number = seed & 0xFFFFFF;
2023 }
2024
2025 static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)
2026 {
2027     MXFContext *mxf = s->priv_data;
2028     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
2029     if (!tcr)
2030         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2031
2032     if (tcr)
2033         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
2034     else
2035         return av_timecode_init(&mxf->tc, rate, 0, 0, s);
2036 }
2037
2038 static int mxf_write_header(AVFormatContext *s)
2039 {
2040     MXFContext *mxf = s->priv_data;
2041     int i, ret;
2042     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
2043     const MXFSamplesPerFrame *spf = NULL;
2044     int64_t timestamp = 0;
2045
2046     if (!s->nb_streams)
2047         return -1;
2048
2049     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1){
2050         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
2051         return -1;
2052     }
2053
2054     if (!av_dict_get(s->metadata, "comment_", NULL, AV_DICT_IGNORE_SUFFIX))
2055         mxf->store_user_comments = 0;
2056
2057     for (i = 0; i < s->nb_streams; i++) {
2058         AVStream *st = s->streams[i];
2059         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
2060         if (!sc)
2061             return AVERROR(ENOMEM);
2062         st->priv_data = sc;
2063
2064         if (((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
2065             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
2066             return -1;
2067         }
2068
2069         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2070             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codec->pix_fmt);
2071             // TODO: should be avg_frame_rate
2072             AVRational rate, tbc = st->time_base;
2073             // Default component depth to 8
2074             sc->component_depth = 8;
2075             sc->h_chroma_sub_sample = 2;
2076             sc->color_siting = 0xFF;
2077
2078             if (pix_desc) {
2079                 sc->component_depth     = pix_desc->comp[0].depth;
2080                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
2081             }
2082             switch (ff_choose_chroma_location(s, st)) {
2083             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;
2084             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;
2085             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;
2086             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;
2087             }
2088
2089             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2090             spf = ff_mxf_get_samples_per_frame(s, tbc);
2091             if (!spf) {
2092                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
2093                        tbc.den, tbc.num);
2094                 return AVERROR(EINVAL);
2095             }
2096             mxf->time_base = spf->time_base;
2097             rate = av_inv_q(mxf->time_base);
2098             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
2099             if((ret = mxf_init_timecode(s, st, rate)) < 0)
2100                 return ret;
2101
2102             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;
2103             if (s->oformat == &ff_mxf_d10_muxer) {
2104                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {
2105                     sc->index = 3;
2106                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && (mxf->time_base.den != 25)) {
2107                     sc->index = 5;
2108                 } else if (sc->video_bit_rate == 40000000) {
2109                     if (mxf->time_base.den == 25) sc->index = 7;
2110                     else                          sc->index = 9;
2111                 } else if (sc->video_bit_rate == 30000000) {
2112                     if (mxf->time_base.den == 25) sc->index = 11;
2113                     else                          sc->index = 13;
2114                 } else {
2115                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
2116                     return -1;
2117                 }
2118
2119                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
2120                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *
2121                     mxf->time_base.num / (8*mxf->time_base.den);
2122                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2123                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;
2124                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2125
2126                 sc->signal_standard = 1;
2127             }
2128             if (mxf->signal_standard >= 0)
2129                 sc->signal_standard = mxf->signal_standard;
2130         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2131             if (st->codec->sample_rate != 48000) {
2132                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
2133                 return -1;
2134             }
2135             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
2136             if (s->oformat == &ff_mxf_d10_muxer) {
2137                 if (st->index != 1) {
2138                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
2139                     return -1;
2140                 }
2141                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
2142                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
2143                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
2144                 }
2145                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
2146             } else if (s->oformat == &ff_mxf_opatom_muxer) {
2147                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
2148
2149                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
2150                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
2151                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
2152                     return AVERROR_PATCHWELCOME;
2153                 }
2154                 if (st->codec->channels != 1) {
2155                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
2156                     return AVERROR(EINVAL);
2157                 }
2158
2159                 spf = ff_mxf_get_samples_per_frame(s, tbc);
2160                 if (!spf){
2161                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);
2162                     return AVERROR(EINVAL);
2163                 }
2164
2165                 mxf->time_base = st->time_base;
2166                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)
2167                     return ret;
2168
2169                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2170                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
2171                 sc->index = 2;
2172             } else {
2173                 mxf->slice_count = 1;
2174             }
2175         }
2176
2177         if (!sc->index) {
2178             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
2179             if (sc->index == -1) {
2180                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
2181                        "codec not currently supported in container\n", i);
2182                 return -1;
2183             }
2184         }
2185
2186         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
2187
2188         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
2189         sc->track_essence_element_key[15] = present[sc->index];
2190         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
2191
2192         if (!present[sc->index])
2193             mxf->essence_container_count++;
2194         present[sc->index]++;
2195     }
2196
2197     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
2198         mxf->essence_container_count = 1;
2199     }
2200
2201     if (!(s->flags & AVFMT_FLAG_BITEXACT))
2202         mxf_gen_umid(s);
2203
2204     for (i = 0; i < s->nb_streams; i++) {
2205         MXFStreamContext *sc = s->streams[i]->priv_data;
2206         // update element count
2207         sc->track_essence_element_key[13] = present[sc->index];
2208         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
2209             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
2210         else
2211             sc->order = AV_RB32(sc->track_essence_element_key+12);
2212     }
2213
2214     if (ff_parse_creation_time_metadata(s, &timestamp, 1) > 0)
2215         mxf->timestamp = mxf_parse_timestamp(timestamp);
2216     mxf->duration = -1;
2217
2218     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
2219     if (!mxf->timecode_track)
2220         return AVERROR(ENOMEM);
2221     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
2222     if (!mxf->timecode_track->priv_data)
2223         return AVERROR(ENOMEM);
2224     mxf->timecode_track->index = -1;
2225
2226     if (!spf)
2227         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
2228
2229     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
2230         return -1;
2231
2232     return 0;
2233 }
2234
2235 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
2236 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 };
2237
2238 static void mxf_write_system_item(AVFormatContext *s)
2239 {
2240     MXFContext *mxf = s->priv_data;
2241     AVIOContext *pb = s->pb;
2242     unsigned frame;
2243     uint32_t time_code;
2244
2245     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2246
2247     // write system metadata pack
2248     avio_write(pb, system_metadata_pack_key, 16);
2249     klv_encode_ber4_length(pb, 57);
2250     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
2251     avio_w8(pb, 0x04); // content package rate
2252     avio_w8(pb, 0x00); // content package type
2253     avio_wb16(pb, 0x00); // channel handle
2254     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow
2255     if (mxf->essence_container_count > 1)
2256         avio_write(pb, multiple_desc_ul, 16);
2257     else {
2258         MXFStreamContext *sc = s->streams[0]->priv_data;
2259         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
2260     }
2261     avio_w8(pb, 0);
2262     avio_wb64(pb, 0);
2263     avio_wb64(pb, 0); // creation date/time stamp
2264
2265     avio_w8(pb, 0x81); // SMPTE 12M time code
2266     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
2267     avio_wb32(pb, time_code);
2268     avio_wb32(pb, 0); // binary group data
2269     avio_wb64(pb, 0);
2270
2271     // write system metadata package set
2272     avio_write(pb, system_metadata_package_set_key, 16);
2273     klv_encode_ber4_length(pb, 35);
2274     avio_w8(pb, 0x83); // UMID
2275     avio_wb16(pb, 0x20);
2276     mxf_write_umid(s, 1);
2277 }
2278
2279 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2280 {
2281     MXFContext *mxf = s->priv_data;
2282     AVIOContext *pb = s->pb;
2283     MXFStreamContext *sc = st->priv_data;
2284     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /
2285         (8*mxf->time_base.den); // frame size
2286     int pad;
2287
2288     packet_size += 16 + 4;
2289     packet_size += klv_fill_size(packet_size);
2290
2291     klv_encode_ber4_length(pb, pkt->size);
2292     avio_write(pb, pkt->data, pkt->size);
2293
2294     // ensure CBR muxing by padding to correct video frame size
2295     pad = packet_size - pkt->size - 16 - 4;
2296     if (pad > 20) {
2297         avio_write(s->pb, klv_fill_key, 16);
2298         pad -= 16 + 4;
2299         klv_encode_ber4_length(s->pb, pad);
2300         ffio_fill(s->pb, 0, pad);
2301         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
2302     } else {
2303         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
2304         ffio_fill(s->pb, 0, pad);
2305     }
2306 }
2307
2308 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2309 {
2310     MXFContext *mxf = s->priv_data;
2311     AVIOContext *pb = s->pb;
2312     int frame_size = pkt->size / st->codec->block_align;
2313     uint8_t *samples = pkt->data;
2314     uint8_t *end = pkt->data + pkt->size;
2315     int i;
2316
2317     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
2318
2319     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
2320     avio_wl16(pb, frame_size);
2321     avio_w8(pb, (1<<st->codec->channels)-1);
2322
2323     while (samples < end) {
2324         for (i = 0; i < st->codec->channels; i++) {
2325             uint32_t sample;
2326             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {
2327                 sample = AV_RL24(samples)<< 4;
2328                 samples += 3;
2329             } else {
2330                 sample = AV_RL16(samples)<<12;
2331                 samples += 2;
2332             }
2333             avio_wl32(pb, sample | i);
2334         }
2335         for (; i < 8; i++)
2336             avio_wl32(pb, i);
2337     }
2338 }
2339
2340 static int mxf_write_opatom_body_partition(AVFormatContext *s)
2341 {
2342     MXFContext *mxf = s->priv_data;
2343     AVIOContext *pb = s->pb;
2344     AVStream *st = s->streams[0];
2345     MXFStreamContext *sc = st->priv_data;
2346     const uint8_t *key = NULL;
2347
2348     int err;
2349
2350     if (!mxf->header_written)
2351         key = body_partition_key;
2352
2353     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)
2354         return err;
2355     mxf_write_klv_fill(s);
2356     avio_write(pb, sc->track_essence_element_key, 16);
2357     klv_encode_ber9_length(pb, mxf->body_offset);
2358     return 0;
2359 }
2360
2361 static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)
2362 {
2363     MXFContext *mxf = s->priv_data;
2364     AVIOContext *pb = s->pb;
2365
2366     int err;
2367
2368     if (!mxf->header_written) {
2369         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2370             return err;
2371         mxf_write_klv_fill(s);
2372
2373         if ((err = mxf_write_opatom_body_partition(s)) < 0)
2374             return err;
2375         mxf->header_written = 1;
2376     }
2377
2378     if (!mxf->edit_unit_byte_count) {
2379         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2380         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;
2381         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;
2382     }
2383     mxf->edit_units_count++;
2384     avio_write(pb, pkt->data, pkt->size);
2385     mxf->body_offset += pkt->size;
2386     avio_flush(pb);
2387
2388     return 0;
2389 }
2390
2391 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
2392 {
2393     MXFContext *mxf = s->priv_data;
2394     AVIOContext *pb = s->pb;
2395     AVStream *st = s->streams[pkt->stream_index];
2396     MXFStreamContext *sc = st->priv_data;
2397     MXFIndexEntry ie = {0};
2398     int err;
2399
2400     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
2401         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
2402                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
2403             mxf->edit_units_count = 0;
2404             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
2405             return err;
2406         }
2407     }
2408
2409     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2410         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
2411             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
2412             return -1;
2413         }
2414     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {
2415         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
2416             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
2417             return -1;
2418         }
2419     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {
2420         if (!mxf_parse_dv_frame(s, st, pkt)) {
2421             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
2422             return -1;
2423         }
2424     } else if (st->codec->codec_id == AV_CODEC_ID_H264) {
2425         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {
2426             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");
2427             return -1;
2428         }
2429     }
2430
2431     if (s->oformat == &ff_mxf_opatom_muxer)
2432         return mxf_write_opatom_packet(s, pkt, &ie);
2433
2434     if (!mxf->header_written) {
2435         if (mxf->edit_unit_byte_count) {
2436             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
2437                 return err;
2438             mxf_write_klv_fill(s);
2439             mxf_write_index_table_segment(s);
2440         } else {
2441             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2442                 return err;
2443         }
2444         mxf->header_written = 1;
2445     }
2446
2447     if (st->index == 0) {
2448         if (!mxf->edit_unit_byte_count &&
2449             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
2450             !(ie.flags & 0x33)) { // I frame, Gop start
2451             mxf_write_klv_fill(s);
2452             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
2453                 return err;
2454             mxf_write_klv_fill(s);
2455             mxf_write_index_table_segment(s);
2456         }
2457
2458         mxf_write_klv_fill(s);
2459         mxf_write_system_item(s);
2460
2461         if (!mxf->edit_unit_byte_count) {
2462             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2463             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2464             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2465             mxf->body_offset += KAG_SIZE; // size of system element
2466         }
2467         mxf->edit_units_count++;
2468     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2469         if (!mxf->edit_units_count) {
2470             av_log(s, AV_LOG_ERROR, "No packets in first stream\n");
2471             return AVERROR_PATCHWELCOME;
2472         }
2473         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2474             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2475     }
2476
2477     mxf_write_klv_fill(s);
2478     avio_write(pb, sc->track_essence_element_key, 16); // write key
2479     if (s->oformat == &ff_mxf_d10_muxer) {
2480         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2481             mxf_write_d10_video_packet(s, st, pkt);
2482         else
2483             mxf_write_d10_audio_packet(s, st, pkt);
2484     } else {
2485         klv_encode_ber4_length(pb, pkt->size); // write length
2486         avio_write(pb, pkt->data, pkt->size);
2487         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2488     }
2489
2490     avio_flush(pb);
2491
2492     return 0;
2493 }
2494
2495 static void mxf_write_random_index_pack(AVFormatContext *s)
2496 {
2497     MXFContext *mxf = s->priv_data;
2498     AVIOContext *pb = s->pb;
2499     uint64_t pos = avio_tell(pb);
2500     int i;
2501
2502     avio_write(pb, random_index_pack_key, 16);
2503     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
2504
2505     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
2506         avio_wb32(pb, 1); // BodySID of header partition
2507     else
2508         avio_wb32(pb, 0);
2509     avio_wb64(pb, 0); // offset of header partition
2510
2511     for (i = 0; i < mxf->body_partitions_count; i++) {
2512         avio_wb32(pb, 1); // BodySID
2513         avio_wb64(pb, mxf->body_partition_offset[i]);
2514     }
2515
2516     avio_wb32(pb, 0); // BodySID of footer partition
2517     avio_wb64(pb, mxf->footer_partition_offset);
2518
2519     avio_wb32(pb, avio_tell(pb) - pos + 4);
2520 }
2521
2522 static int mxf_write_footer(AVFormatContext *s)
2523 {
2524     MXFContext *mxf = s->priv_data;
2525     AVIOContext *pb = s->pb;
2526     int err = 0;
2527
2528     if (!mxf->header_written ||
2529         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
2530         /* reason could be invalid options/not supported codec/out of memory */
2531         err = AVERROR_UNKNOWN;
2532         goto end;
2533     }
2534
2535     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2536
2537     mxf_write_klv_fill(s);
2538     mxf->footer_partition_offset = avio_tell(pb);
2539     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
2540         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
2541             goto end;
2542     } else {
2543         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
2544             goto end;
2545         mxf_write_klv_fill(s);
2546         mxf_write_index_table_segment(s);
2547     }
2548
2549     mxf_write_klv_fill(s);
2550     mxf_write_random_index_pack(s);
2551
2552     if (s->pb->seekable) {
2553         if (s->oformat == &ff_mxf_opatom_muxer){
2554             /* rewrite body partition to update lengths */
2555             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
2556             if ((err = mxf_write_opatom_body_partition(s)) < 0)
2557                 goto end;
2558         }
2559
2560         avio_seek(pb, 0, SEEK_SET);
2561         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
2562             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
2563                 goto end;
2564             mxf_write_klv_fill(s);
2565             mxf_write_index_table_segment(s);
2566         } else {
2567             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
2568                 goto end;
2569         }
2570     }
2571
2572 end:
2573     ff_audio_interleave_close(s);
2574
2575     av_freep(&mxf->index_entries);
2576     av_freep(&mxf->body_partition_offset);
2577     av_freep(&mxf->timecode_track->priv_data);
2578     av_freep(&mxf->timecode_track);
2579
2580     mxf_free(s);
2581
2582     return err < 0 ? err : 0;
2583 }
2584
2585 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2586 {
2587     int i, stream_count = 0;
2588
2589     for (i = 0; i < s->nb_streams; i++)
2590         stream_count += !!s->streams[i]->last_in_packet_buffer;
2591
2592     if (stream_count && (s->nb_streams == stream_count || flush)) {
2593         AVPacketList *pktl = s->internal->packet_buffer;
2594         if (s->nb_streams != stream_count) {
2595             AVPacketList *last = NULL;
2596             // find last packet in edit unit
2597             while (pktl) {
2598                 if (!stream_count || pktl->pkt.stream_index == 0)
2599                     break;
2600                 last = pktl;
2601                 pktl = pktl->next;
2602                 stream_count--;
2603             }
2604             // purge packet queue
2605             while (pktl) {
2606                 AVPacketList *next = pktl->next;
2607
2608                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2609                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2610                 av_packet_unref(&pktl->pkt);
2611                 av_freep(&pktl);
2612                 pktl = next;
2613             }
2614             if (last)
2615                 last->next = NULL;
2616             else {
2617                 s->internal->packet_buffer = NULL;
2618                 s->internal->packet_buffer_end= NULL;
2619                 goto out;
2620             }
2621             pktl = s->internal->packet_buffer;
2622         }
2623
2624         *out = pktl->pkt;
2625         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
2626         s->internal->packet_buffer = pktl->next;
2627         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2628             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2629         if(!s->internal->packet_buffer)
2630             s->internal->packet_buffer_end= NULL;
2631         av_freep(&pktl);
2632         return 1;
2633     } else {
2634     out:
2635         av_init_packet(out);
2636         return 0;
2637     }
2638 }
2639
2640 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2641 {
2642     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
2643     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
2644
2645     return next->dts > pkt->dts ||
2646         (next->dts == pkt->dts && sc->order < sc2->order);
2647 }
2648
2649 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2650 {
2651     return ff_audio_rechunk_interleave(s, out, pkt, flush,
2652                                mxf_interleave_get_packet, mxf_compare_timestamps);
2653 }
2654
2655 #define MXF_COMMON_OPTIONS \
2656     { "signal_standard", "Force/set Sigal Standard",\
2657       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2658     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\
2659       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2660     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\
2661       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2662     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\
2663       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2664     { "smpte274m", "SMPTE 274M (1125 line)",\
2665       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2666     { "smpte296m", "SMPTE 296M (750 line progressive)",\
2667       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2668     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\
2669       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2670     { "smpte428", "SMPTE 428-1 DCDM",\
2671       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},
2672
2673
2674
2675 static const AVOption mxf_options[] = {
2676     MXF_COMMON_OPTIONS
2677     { "store_user_comments", "",
2678       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
2679     { NULL },
2680 };
2681
2682 static const AVClass mxf_muxer_class = {
2683     .class_name     = "MXF muxer",
2684     .item_name      = av_default_item_name,
2685     .option         = mxf_options,
2686     .version        = LIBAVUTIL_VERSION_INT,
2687 };
2688
2689 static const AVOption d10_options[] = {
2690     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
2691       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
2692     MXF_COMMON_OPTIONS
2693     { "store_user_comments", "",
2694       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
2695     { NULL },
2696 };
2697
2698 static const AVClass mxf_d10_muxer_class = {
2699     .class_name     = "MXF-D10 muxer",
2700     .item_name      = av_default_item_name,
2701     .option         = d10_options,
2702     .version        = LIBAVUTIL_VERSION_INT,
2703 };
2704
2705 static const AVOption opatom_options[] = {
2706     { "mxf_audio_edit_rate", "Audio edit rate for timecode",
2707         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2708     MXF_COMMON_OPTIONS
2709     { NULL },
2710 };
2711
2712 static const AVClass mxf_opatom_muxer_class = {
2713     .class_name     = "MXF-OPAtom muxer",
2714     .item_name      = av_default_item_name,
2715     .option         = opatom_options,
2716     .version        = LIBAVUTIL_VERSION_INT,
2717 };
2718
2719 AVOutputFormat ff_mxf_muxer = {
2720     .name              = "mxf",
2721     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
2722     .mime_type         = "application/mxf",
2723     .extensions        = "mxf",
2724     .priv_data_size    = sizeof(MXFContext),
2725     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2726     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2727     .write_header      = mxf_write_header,
2728     .write_packet      = mxf_write_packet,
2729     .write_trailer     = mxf_write_footer,
2730     .flags             = AVFMT_NOTIMESTAMPS,
2731     .interleave_packet = mxf_interleave,
2732     .priv_class        = &mxf_muxer_class,
2733 };
2734
2735 AVOutputFormat ff_mxf_d10_muxer = {
2736     .name              = "mxf_d10",
2737     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
2738     .mime_type         = "application/mxf",
2739     .priv_data_size    = sizeof(MXFContext),
2740     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2741     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2742     .write_header      = mxf_write_header,
2743     .write_packet      = mxf_write_packet,
2744     .write_trailer     = mxf_write_footer,
2745     .flags             = AVFMT_NOTIMESTAMPS,
2746     .interleave_packet = mxf_interleave,
2747     .priv_class        = &mxf_d10_muxer_class,
2748 };
2749
2750 AVOutputFormat ff_mxf_opatom_muxer = {
2751     .name              = "mxf_opatom",
2752     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
2753     .mime_type         = "application/mxf",
2754     .extensions        = "mxf",
2755     .priv_data_size    = sizeof(MXFContext),
2756     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2757     .video_codec       = AV_CODEC_ID_DNXHD,
2758     .write_header      = mxf_write_header,
2759     .write_packet      = mxf_write_packet,
2760     .write_trailer     = mxf_write_footer,
2761     .flags             = AVFMT_NOTIMESTAMPS,
2762     .interleave_packet = mxf_interleave,
2763     .priv_class        = &mxf_opatom_muxer_class,
2764 };