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  *             https://smpte-ra.org/sites/default/files/Labels.xml
 356  */
 357 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 358     // preface set
 359     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 360     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 361     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 362     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 363     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 364     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 365     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 366     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 367     // Identification
 368     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 369     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 370     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 371     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 372     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 373     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 374     // Content Storage
 375     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 376     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 377     // Essence Container Data
 378     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 379     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 380     // Package
 381     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 382     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 383     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 384     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */
 385     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 386     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 387     // Track
 388     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 389     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 390     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 391     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 392     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 393     // Sequence
 394     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 395     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 396     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 397     // Source Clip
 398     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 399     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 400     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 401     // Timecode Component
 402     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 403     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 404     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 405     // File Descriptor
 406     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 407     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 408     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 409     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */
 410     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 411     // Generic Picture Essence Descriptor
 412     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 413     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 414     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 415     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 416     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 417     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 418     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */
 419     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 420     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 421     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 422     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */
 423     // CDCI Picture Essence Descriptor
 424     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 425     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 426     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */
 427     // Generic Sound Essence Descriptor
 428     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 429     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 430     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 431     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 432     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 433     // Index Table Segment
 434     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 435     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 436     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 437     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 438     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 439     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 440     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 441     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 442     // MPEG video Descriptor
 443     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 444     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 445     // Wave Audio Essence Descriptor
 446     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 447     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 448 };
 449
 450 static const MXFLocalTagPair mxf_user_comments_local_tag[] = {
 451     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */
 452     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */
 453     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */
 454 };
 455
 456 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 457 {
 458     avio_write(pb, uuid_base, 12);
 459     avio_wb16(pb, type);
 460     avio_wb16(pb, value);
 461 }
 462
 463 static void mxf_write_umid(AVFormatContext *s, int type)
 464 {
 465     MXFContext *mxf = s->priv_data;
 466     avio_write(s->pb, umid_ul, 13);
 467     avio_wb24(s->pb, mxf->instance_number);
 468     avio_write(s->pb, mxf->umid, 15);
 469     avio_w8(s->pb, type);
 470 }
 471
 472 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 473 {
 474     avio_wb32(pb, ref_count);
 475     avio_wb32(pb, 16);
 476 }
 477
 478 static int klv_ber_length(uint64_t len)
 479 {
 480     if (len < 128)
 481         return 1;
 482     else
 483         return (av_log2(len) >> 3) + 2;
 484 }
 485
 486 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 487 {
 488     // Determine the best BER size
 489     int size;
 490     if (len < 128) {
 491         //short form
 492         avio_w8(pb, len);
 493         return 1;
 494     }
 495
 496     size = (av_log2(len) >> 3) + 1;
 497
 498     // long form
 499     avio_w8(pb, 0x80 + size);
 500     while(size) {
 501         size--;
 502         avio_w8(pb, len >> 8 * size & 0xff);
 503     }
 504     return 0;
 505 }
 506
 507 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 508 {
 509     avio_w8(pb, 0x80 + 3);
 510     avio_wb24(pb, len);
 511 }
 512
 513 static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len)
 514 {
 515     avio_w8(pb, 0x80 + 8);
 516     avio_wb64(pb, len);
 517 }
 518
 519 /*
 520  * Get essence container ul index
 521  */
 522 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 523 {
 524     int i;
 525     for (i = 0; mxf_essence_mappings[i].id; i++)
 526         if (mxf_essence_mappings[i].id == id)
 527             return mxf_essence_mappings[i].index;
 528     return -1;
 529 }
 530
 531 static void mxf_write_primer_pack(AVFormatContext *s)
 532 {
 533     MXFContext *mxf = s->priv_data;
 534     AVIOContext *pb = s->pb;
 535     int local_tag_number, i = 0;
 536
 537     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 538     local_tag_number += mxf->store_user_comments * FF_ARRAY_ELEMS(mxf_user_comments_local_tag);
 539
 540     avio_write(pb, primer_pack_key, 16);
 541     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 542
 543     avio_wb32(pb, local_tag_number); // local_tag num
 544     avio_wb32(pb, 18); // item size, always 18 according to the specs
 545
 546     for (i = 0; i < FF_ARRAY_ELEMS(mxf_local_tag_batch); i++) {
 547         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 548         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 549     }
 550     if (mxf->store_user_comments)
 551         for (i = 0; i < FF_ARRAY_ELEMS(mxf_user_comments_local_tag); i++) {
 552             avio_wb16(pb, mxf_user_comments_local_tag[i].local_tag);
 553             avio_write(pb, mxf_user_comments_local_tag[i].uid, 16);
 554         }
 555 }
 556
 557 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
 558 {
 559     avio_wb16(pb, tag);
 560     avio_wb16(pb, size);
 561 }
 562
 563 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 564 {
 565     avio_write(pb, header_metadata_key, 13);
 566     avio_wb24(pb, value);
 567 }
 568
 569 static void mxf_free(AVFormatContext *s)
 570 {
 571     int i;
 572
 573     for (i = 0; i < s->nb_streams; i++) {
 574         AVStream *st = s->streams[i];
 575         av_freep(&st->priv_data);
 576     }
 577 }
 578
 579 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 580 {
 581     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 582     while (uls->uid[0]) {
 583         if (type == uls->id)
 584             break;
 585         uls++;
 586     }
 587     return uls;
 588 }
 589
 590 //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors
 591 #define DESCRIPTOR_COUNT(essence_container_count) \
 592     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)
 593
 594 static void mxf_write_essence_container_refs(AVFormatContext *s)
 595 {
 596     MXFContext *c = s->priv_data;
 597     AVIOContext *pb = s->pb;
 598     int i;
 599
 600     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));
 601     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 602     for (i = 0; i < c->essence_container_count; i++) {
 603         MXFStreamContext *sc = s->streams[i]->priv_data;
 604         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 605     }
 606
 607     if (c->essence_container_count > 1)
 608         avio_write(pb, multiple_desc_ul, 16);
 609 }
 610
 611 static void mxf_write_preface(AVFormatContext *s)
 612 {
 613     MXFContext *mxf = s->priv_data;
 614     AVIOContext *pb = s->pb;
 615
 616     mxf_write_metadata_key(pb, 0x012f00);
 617     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 618     klv_encode_ber_length(pb, 130 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 619
 620     // write preface set uid
 621     mxf_write_local_tag(pb, 16, 0x3C0A);
 622     mxf_write_uuid(pb, Preface, 0);
 623     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 624
 625     // last modified date
 626     mxf_write_local_tag(pb, 8, 0x3B02);
 627     avio_wb64(pb, mxf->timestamp);
 628
 629     // write version
 630     mxf_write_local_tag(pb, 2, 0x3B05);
 631     avio_wb16(pb, 258); // v1.2
 632
 633     // write identification_refs
 634     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 635     mxf_write_refs_count(pb, 1);
 636     mxf_write_uuid(pb, Identification, 0);
 637
 638     // write content_storage_refs
 639     mxf_write_local_tag(pb, 16, 0x3B03);
 640     mxf_write_uuid(pb, ContentStorage, 0);
 641
 642     // operational pattern
 643     mxf_write_local_tag(pb, 16, 0x3B09);
 644     if (s->oformat == &ff_mxf_opatom_muxer)
 645         avio_write(pb, opatom_ul, 16);
 646     else
 647         avio_write(pb, op1a_ul, 16);
 648
 649     // write essence_container_refs
 650     mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);
 651     mxf_write_essence_container_refs(s);
 652
 653     // write dm_scheme_refs
 654     mxf_write_local_tag(pb, 8, 0x3B0B);
 655     avio_wb64(pb, 0);
 656 }
 657
 658 /*
 659  * Returns the length of the UTF-16 string, in 16-bit characters, that would result
 660  * from decoding the utf-8 string.
 661  */
 662 static uint64_t mxf_utf16len(const char *utf8_str)
 663 {
 664     const uint8_t *q = utf8_str;
 665     uint64_t size = 0;
 666     while (*q) {
 667         uint32_t ch;
 668         GET_UTF8(ch, *q++, goto invalid;)
 669         if (ch < 0x10000)
 670             size++;
 671         else
 672             size += 2;
 673         continue;
 674 invalid:
 675         av_log(NULL, AV_LOG_ERROR, "Invalid UTF8 sequence in mxf_utf16len\n\n");
 676     }
 677     size += 1;
 678     return size;
 679 }
 680
 681 /*
 682  * Returns the calculated length a local tag containing an utf-8 string as utf-16
 683  */
 684 static int mxf_utf16_local_tag_length(const char *utf8_str)
 685 {
 686     uint64_t size;
 687
 688     if (!utf8_str)
 689         return 0;
 690
 691     size = mxf_utf16len(utf8_str);
 692     if (size >= UINT16_MAX/2) {
 693         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 694         return 0;
 695     }
 696
 697     return 4 + size * 2;
 698 }
 699
 700 /*
 701  * Write a local tag containing an utf-8 string as utf-16
 702  */
 703 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
 704 {
 705     uint64_t size = mxf_utf16len(value);
 706
 707     if (size >= UINT16_MAX/2) {
 708         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 709         return;
 710     }
 711
 712     mxf_write_local_tag(pb, size*2, tag);
 713     avio_put_str16be(pb, value);
 714 }
 715
 716 static void mxf_write_identification(AVFormatContext *s)
 717 {
 718     MXFContext *mxf = s->priv_data;
 719     AVIOContext *pb = s->pb;
 720     const char *company = "FFmpeg";
 721     const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
 722     const char *version;
 723     int length;
 724
 725     mxf_write_metadata_key(pb, 0x013000);
 726     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 727
 728     version = s->flags & AVFMT_FLAG_BITEXACT ?
 729         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 730     length = 72 + mxf_utf16_local_tag_length(company) +
 731                   mxf_utf16_local_tag_length(product) +
 732                   mxf_utf16_local_tag_length(version);
 733     klv_encode_ber_length(pb, length);
 734
 735     // write uid
 736     mxf_write_local_tag(pb, 16, 0x3C0A);
 737     mxf_write_uuid(pb, Identification, 0);
 738     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 739
 740     // write generation uid
 741     mxf_write_local_tag(pb, 16, 0x3C09);
 742     mxf_write_uuid(pb, Identification, 1);
 743     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 744     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 745     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 746
 747     // write product uid
 748     mxf_write_local_tag(pb, 16, 0x3C05);
 749     mxf_write_uuid(pb, Identification, 2);
 750
 751     // modification date
 752     mxf_write_local_tag(pb, 8, 0x3C06);
 753     avio_wb64(pb, mxf->timestamp);
 754 }
 755
 756 static void mxf_write_content_storage(AVFormatContext *s)
 757 {
 758     AVIOContext *pb = s->pb;
 759
 760     mxf_write_metadata_key(pb, 0x011800);
 761     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 762     klv_encode_ber_length(pb, 92);
 763
 764     // write uid
 765     mxf_write_local_tag(pb, 16, 0x3C0A);
 766     mxf_write_uuid(pb, ContentStorage, 0);
 767     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 768
 769     // write package reference
 770     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 771     mxf_write_refs_count(pb, 2);
 772     mxf_write_uuid(pb, MaterialPackage, 0);
 773     mxf_write_uuid(pb, SourcePackage, 0);
 774
 775     // write essence container data
 776     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 777     mxf_write_refs_count(pb, 1);
 778     mxf_write_uuid(pb, EssenceContainerData, 0);
 779 }
 780
 781 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 782 {
 783     MXFContext *mxf = s->priv_data;
 784     AVIOContext *pb = s->pb;
 785     MXFStreamContext *sc = st->priv_data;
 786
 787     mxf_write_metadata_key(pb, 0x013b00);
 788     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 789     klv_encode_ber_length(pb, 80);
 790
 791     // write track uid
 792     mxf_write_local_tag(pb, 16, 0x3C0A);
 793     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 794     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 795
 796     // write track id
 797     mxf_write_local_tag(pb, 4, 0x4801);
 798     avio_wb32(pb, st->index+2);
 799
 800     // write track number
 801     mxf_write_local_tag(pb, 4, 0x4804);
 802     if (type == MaterialPackage)
 803         avio_wb32(pb, 0); // track number of material package is 0
 804     else
 805         avio_write(pb, sc->track_essence_element_key + 12, 4);
 806
 807     mxf_write_local_tag(pb, 8, 0x4B01);
 808
 809     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer){
 810         avio_wb32(pb, mxf->tc.rate.num);
 811         avio_wb32(pb, mxf->tc.rate.den);
 812     } else {
 813         avio_wb32(pb, mxf->time_base.den);
 814         avio_wb32(pb, mxf->time_base.num);
 815     }
 816
 817     // write origin
 818     mxf_write_local_tag(pb, 8, 0x4B02);
 819     avio_wb64(pb, 0);
 820
 821     // write sequence refs
 822     mxf_write_local_tag(pb, 16, 0x4803);
 823     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 824 }
 825
 826 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 };
 827
 828 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 829 {
 830     MXFContext *mxf = s->priv_data;
 831     AVIOContext *pb = s->pb;
 832
 833     // find data define uls
 834     mxf_write_local_tag(pb, 16, 0x0201);
 835     if (st == mxf->timecode_track)
 836         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 837     else {
 838         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codecpar->codec_type);
 839         avio_write(pb, data_def_ul->uid, 16);
 840     }
 841
 842     // write duration
 843     mxf_write_local_tag(pb, 8, 0x0202);
 844
 845     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO){
 846         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
 847     } else {
 848         avio_wb64(pb, mxf->duration);
 849     }
 850 }
 851
 852 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 853 {
 854     MXFContext *mxf = s->priv_data;
 855     AVIOContext *pb = s->pb;
 856     enum MXFMetadataSetType component;
 857
 858     mxf_write_metadata_key(pb, 0x010f00);
 859     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 860     klv_encode_ber_length(pb, 80);
 861
 862     mxf_write_local_tag(pb, 16, 0x3C0A);
 863     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 864
 865     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 866     mxf_write_common_fields(s, st);
 867
 868     // write structural component
 869     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 870     mxf_write_refs_count(pb, 1);
 871     if (st == mxf->timecode_track)
 872         component = TimecodeComponent;
 873     else
 874         component = SourceClip;
 875     if (type == SourcePackage)
 876         component += TypeBottom;
 877     mxf_write_uuid(pb, component, st->index);
 878 }
 879
 880 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 881 {
 882     MXFContext *mxf = s->priv_data;
 883     AVIOContext *pb = s->pb;
 884
 885     mxf_write_metadata_key(pb, 0x011400);
 886     klv_encode_ber_length(pb, 75);
 887
 888     // UID
 889     mxf_write_local_tag(pb, 16, 0x3C0A);
 890     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
 891                    TimecodeComponent + TypeBottom, st->index);
 892
 893     mxf_write_common_fields(s, st);
 894
 895     // Start Time Code
 896     mxf_write_local_tag(pb, 8, 0x1501);
 897     avio_wb64(pb, mxf->tc.start);
 898
 899     // Rounded Time Code Base
 900     mxf_write_local_tag(pb, 2, 0x1502);
 901     avio_wb16(pb, mxf->timecode_base);
 902
 903     // Drop Frame
 904     mxf_write_local_tag(pb, 1, 0x1503);
 905     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 906 }
 907
 908 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 909 {
 910     AVIOContext *pb = s->pb;
 911     int i;
 912
 913     mxf_write_metadata_key(pb, 0x011100);
 914     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 915     klv_encode_ber_length(pb, 108);
 916
 917     // write uid
 918     mxf_write_local_tag(pb, 16, 0x3C0A);
 919     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 920
 921     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 922     mxf_write_common_fields(s, st);
 923
 924     // write start_position
 925     mxf_write_local_tag(pb, 8, 0x1201);
 926     avio_wb64(pb, 0);
 927
 928     // write source package uid, end of the reference
 929     mxf_write_local_tag(pb, 32, 0x1101);
 930     if (type == SourcePackage) {
 931         for (i = 0; i < 4; i++)
 932             avio_wb64(pb, 0);
 933     } else
 934         mxf_write_umid(s, 1);
 935
 936     // write source track id
 937     mxf_write_local_tag(pb, 4, 0x1102);
 938     if (type == SourcePackage)
 939         avio_wb32(pb, 0);
 940     else
 941         avio_wb32(pb, st->index+2);
 942 }
 943
 944 static void mxf_write_multi_descriptor(AVFormatContext *s)
 945 {
 946     MXFContext *mxf = s->priv_data;
 947     AVIOContext *pb = s->pb;
 948     const uint8_t *ul;
 949     int i;
 950
 951     mxf_write_metadata_key(pb, 0x014400);
 952     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 953     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
 954
 955     mxf_write_local_tag(pb, 16, 0x3C0A);
 956     mxf_write_uuid(pb, MultipleDescriptor, 0);
 957     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 958
 959     // write sample rate
 960     mxf_write_local_tag(pb, 8, 0x3001);
 961     avio_wb32(pb, mxf->time_base.den);
 962     avio_wb32(pb, mxf->time_base.num);
 963
 964     // write essence container ul
 965     mxf_write_local_tag(pb, 16, 0x3004);
 966     if (mxf->essence_container_count > 1)
 967         ul = multiple_desc_ul;
 968     else {
 969         MXFStreamContext *sc = s->streams[0]->priv_data;
 970         ul = mxf_essence_container_uls[sc->index].container_ul;
 971     }
 972     avio_write(pb, ul, 16);
 973
 974     // write sub descriptor refs
 975     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 976     mxf_write_refs_count(pb, s->nb_streams);
 977     for (i = 0; i < s->nb_streams; i++)
 978         mxf_write_uuid(pb, SubDescriptor, i);
 979 }
 980
 981 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 982 {
 983     MXFContext *mxf = s->priv_data;
 984     MXFStreamContext *sc = st->priv_data;
 985     AVIOContext *pb = s->pb;
 986
 987     avio_write(pb, key, 16);
 988     klv_encode_ber4_length(pb, size+20+8+12+20);
 989
 990     mxf_write_local_tag(pb, 16, 0x3C0A);
 991     mxf_write_uuid(pb, SubDescriptor, st->index);
 992
 993     mxf_write_local_tag(pb, 4, 0x3006);
 994     avio_wb32(pb, st->index+2);
 995
 996     mxf_write_local_tag(pb, 8, 0x3001);
 997     avio_wb32(pb, mxf->time_base.den);
 998     avio_wb32(pb, mxf->time_base.num);
 999
1000     mxf_write_local_tag(pb, 16, 0x3004);
1001     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1002 }
1003
1004 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
1005 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
1006 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
1007 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
1008 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
1009
1010 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1011 {
1012     MXFStreamContext *sc = st->priv_data;
1013     AVIOContext *pb = s->pb;
1014     int stored_height = (st->codecpar->height+15)/16*16;
1015     int display_height;
1016     int f1, f2;
1017     unsigned desc_size = size+8+8+8+8+8+8+8+5+16+4+12+20+5;
1018     if (sc->interlaced && sc->field_dominance)
1019         desc_size += 5;
1020     if (sc->signal_standard)
1021         desc_size += 5;
1022
1023     mxf_write_generic_desc(s, st, key, desc_size);
1024
1025     mxf_write_local_tag(pb, 4, 0x3203);
1026     avio_wb32(pb, st->codecpar->width);
1027
1028     mxf_write_local_tag(pb, 4, 0x3202);
1029     avio_wb32(pb, stored_height>>sc->interlaced);
1030
1031     mxf_write_local_tag(pb, 4, 0x3209);
1032     avio_wb32(pb, st->codecpar->width);
1033
1034     if (st->codecpar->height == 608) // PAL + VBI
1035         display_height = 576;
1036     else if (st->codecpar->height == 512)  // NTSC + VBI
1037         display_height = 486;
1038     else
1039         display_height = st->codecpar->height;
1040
1041     mxf_write_local_tag(pb, 4, 0x3208);
1042     avio_wb32(pb, display_height>>sc->interlaced);
1043
1044     // presentation Y offset
1045     mxf_write_local_tag(pb, 4, 0x320B);
1046     avio_wb32(pb, (st->codecpar->height - display_height)>>sc->interlaced);
1047
1048     // component depth
1049     mxf_write_local_tag(pb, 4, 0x3301);
1050     avio_wb32(pb, sc->component_depth);
1051
1052     // horizontal subsampling
1053     mxf_write_local_tag(pb, 4, 0x3302);
1054     avio_wb32(pb, sc->h_chroma_sub_sample);
1055
1056     // color siting
1057     mxf_write_local_tag(pb, 1, 0x3303);
1058     avio_w8(pb, sc->color_siting);
1059
1060     if (sc->signal_standard) {
1061         mxf_write_local_tag(pb, 1, 0x3215);
1062         avio_w8(pb, sc->signal_standard);
1063     }
1064
1065     // frame layout
1066     mxf_write_local_tag(pb, 1, 0x320C);
1067     avio_w8(pb, sc->interlaced);
1068
1069     // video line map
1070     switch (st->codecpar->height) {
1071     case  576: f1 = 23; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
1072     case  608: f1 =  7; f2 = 320; break;
1073     case  480: f1 = 20; f2 = st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
1074     case  512: f1 =  7; f2 = 270; break;
1075     case  720: f1 = 26; f2 =   0; break; // progressive
1076     case 1080: f1 = 21; f2 = 584; break;
1077     default:   f1 =  0; f2 =   0; break;
1078     }
1079
1080     if (!sc->interlaced) {
1081         f2  = 0;
1082         f1 *= 2;
1083     }
1084
1085
1086     mxf_write_local_tag(pb, 16, 0x320D);
1087     avio_wb32(pb, 2);
1088     avio_wb32(pb, 4);
1089     avio_wb32(pb, f1);
1090     avio_wb32(pb, f2);
1091
1092     mxf_write_local_tag(pb, 8, 0x320E);
1093     avio_wb32(pb, sc->aspect_ratio.num);
1094     avio_wb32(pb, sc->aspect_ratio.den);
1095
1096     mxf_write_local_tag(pb, 16, 0x3201);
1097     avio_write(pb, *sc->codec_ul, 16);
1098
1099     if (sc->interlaced && sc->field_dominance) {
1100         mxf_write_local_tag(pb, 1, 0x3212);
1101         avio_w8(pb, sc->field_dominance);
1102     }
1103
1104 }
1105
1106 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
1107 {
1108     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
1109 }
1110
1111 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1112 {
1113     AVIOContext *pb = s->pb;
1114     MXFStreamContext *sc = st->priv_data;
1115     int profile_and_level = (st->codecpar->profile<<4) | st->codecpar->level;
1116
1117     if (st->codecpar->codec_id != AV_CODEC_ID_H264) {
1118         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
1119
1120         // bit rate
1121         mxf_write_local_tag(pb, 4, 0x8000);
1122         avio_wb32(pb, sc->video_bit_rate);
1123
1124         // profile and level
1125         mxf_write_local_tag(pb, 1, 0x8007);
1126         if (!st->codecpar->profile)
1127             profile_and_level |= 0x80; // escape bit
1128         avio_w8(pb, profile_and_level);
1129     } else {
1130         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);
1131     }
1132 }
1133
1134 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1135 {
1136     AVIOContext *pb = s->pb;
1137     MXFContext *mxf = s->priv_data;
1138     int show_warnings = !mxf->footer_partition_offset;
1139     int duration_size = 0;
1140
1141     if (s->oformat == &ff_mxf_opatom_muxer)
1142         duration_size = 12;
1143
1144     mxf_write_generic_desc(s, st, key, size+duration_size+5+12+8+8);
1145
1146     if (duration_size > 0){
1147         mxf_write_local_tag(pb, 8, 0x3002);
1148         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
1149     }
1150
1151     // audio locked
1152     mxf_write_local_tag(pb, 1, 0x3D02);
1153     avio_w8(pb, 1);
1154
1155     // write audio sampling rate
1156     mxf_write_local_tag(pb, 8, 0x3D03);
1157     avio_wb32(pb, st->codecpar->sample_rate);
1158     avio_wb32(pb, 1);
1159
1160     mxf_write_local_tag(pb, 4, 0x3D07);
1161     if (mxf->channel_count == -1) {
1162         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codecpar->channels != 4) && (st->codecpar->channels != 8))
1163             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");
1164         avio_wb32(pb, st->codecpar->channels);
1165     } else if (s->oformat == &ff_mxf_d10_muxer) {
1166         if (show_warnings && (mxf->channel_count < st->codecpar->channels))
1167             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1168         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1169             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");
1170         avio_wb32(pb, mxf->channel_count);
1171     } else {
1172         if (show_warnings && mxf->channel_count != -1 && s->oformat != &ff_mxf_opatom_muxer)
1173             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");
1174         avio_wb32(pb, st->codecpar->channels);
1175     }
1176
1177     mxf_write_local_tag(pb, 4, 0x3D01);
1178     avio_wb32(pb, av_get_bits_per_sample(st->codecpar->codec_id));
1179 }
1180
1181 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1182 {
1183     AVIOContext *pb = s->pb;
1184
1185     mxf_write_generic_sound_common(s, st, key, size+6+8);
1186
1187     mxf_write_local_tag(pb, 2, 0x3D0A);
1188     avio_wb16(pb, st->codecpar->block_align);
1189
1190     // avg bytes per sec
1191     mxf_write_local_tag(pb, 4, 0x3D09);
1192     avio_wb32(pb, st->codecpar->block_align*st->codecpar->sample_rate);
1193 }
1194
1195 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1196 {
1197     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
1198 }
1199
1200 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1201 {
1202     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
1203 }
1204
1205 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1206 {
1207     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
1208 }
1209
1210 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 };
1211
1212 static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)
1213 {
1214     MXFContext *mxf = s->priv_data;
1215     AVIOContext *pb = s->pb;
1216     int name_size = mxf_utf16_local_tag_length(name);
1217     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);
1218
1219     if (!name_size || indirect_value_size == 13)
1220         return 1;
1221
1222     mxf_write_metadata_key(pb, 0x013f00);
1223     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);
1224
1225     // write instance UID
1226     mxf_write_local_tag(pb, 16, 0x3C0A);
1227     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);
1228
1229     // write name
1230     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name
1231
1232     // write indirect value
1233     mxf_write_local_tag(pb, indirect_value_size, 0x5003);
1234     avio_write(pb, mxf_indirect_value_utf16le, 17);
1235     avio_put_str16le(pb, value);
1236
1237     mxf->tagged_value_count++;
1238     return 0;
1239 }
1240
1241 static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)
1242 {
1243     MXFContext *mxf = s->priv_data;
1244     AVDictionaryEntry *t = NULL;
1245     int count = 0;
1246
1247     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {
1248         if (mxf->tagged_value_count >= UINT16_MAX) {
1249             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");
1250             return count;
1251         }
1252
1253         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)
1254             count++;
1255     }
1256     return count;
1257 }
1258
1259 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type, const char *package_name)
1260 {
1261     MXFContext *mxf = s->priv_data;
1262     AVIOContext *pb = s->pb;
1263     int i, track_count = s->nb_streams+1;
1264     int name_size = mxf_utf16_local_tag_length(package_name);
1265     int user_comment_count = 0;
1266
1267     if (type == MaterialPackage) {
1268         if (mxf->store_user_comments)
1269             user_comment_count = mxf_write_user_comments(s, s->metadata);
1270         mxf_write_metadata_key(pb, 0x013600);
1271         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1272         klv_encode_ber_length(pb, 92 + name_size + (16*track_count) + (16*user_comment_count) + 12LL*mxf->store_user_comments);
1273     } else {
1274         mxf_write_metadata_key(pb, 0x013700);
1275         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1276         klv_encode_ber_length(pb, 112 + name_size + (16*track_count) + 12LL*mxf->store_user_comments); // 20 bytes length for descriptor reference
1277     }
1278
1279     // write uid
1280     mxf_write_local_tag(pb, 16, 0x3C0A);
1281     mxf_write_uuid(pb, type, 0);
1282     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
1283     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1284
1285     // write package umid
1286     mxf_write_local_tag(pb, 32, 0x4401);
1287     mxf_write_umid(s, type == SourcePackage);
1288     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1289
1290     // package name
1291     if (name_size)
1292         mxf_write_local_tag_utf16(pb, 0x4402, package_name);
1293
1294     // package creation date
1295     mxf_write_local_tag(pb, 8, 0x4405);
1296     avio_wb64(pb, mxf->timestamp);
1297
1298     // package modified date
1299     mxf_write_local_tag(pb, 8, 0x4404);
1300     avio_wb64(pb, mxf->timestamp);
1301
1302     // write track refs
1303     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
1304     mxf_write_refs_count(pb, track_count);
1305     mxf_write_uuid(pb, type == MaterialPackage ? Track :
1306                    Track + TypeBottom, -1); // timecode track
1307     for (i = 0; i < s->nb_streams; i++)
1308         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
1309
1310     // write user comment refs
1311     if (mxf->store_user_comments) {
1312         mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);
1313         mxf_write_refs_count(pb, user_comment_count);
1314         for (i = 0; i < user_comment_count; i++)
1315             mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);
1316     }
1317
1318     // write multiple descriptor reference
1319     if (type == SourcePackage) {
1320         mxf_write_local_tag(pb, 16, 0x4701);
1321         if (s->nb_streams > 1) {
1322             mxf_write_uuid(pb, MultipleDescriptor, 0);
1323             mxf_write_multi_descriptor(s);
1324         } else
1325             mxf_write_uuid(pb, SubDescriptor, 0);
1326     }
1327
1328     // write timecode track
1329     mxf_write_track(s, mxf->timecode_track, type);
1330     mxf_write_sequence(s, mxf->timecode_track, type);
1331     mxf_write_timecode_component(s, mxf->timecode_track, type);
1332
1333     for (i = 0; i < s->nb_streams; i++) {
1334         AVStream *st = s->streams[i];
1335         mxf_write_track(s, st, type);
1336         mxf_write_sequence(s, st, type);
1337         mxf_write_structural_component(s, st, type);
1338
1339         if (type == SourcePackage) {
1340             MXFStreamContext *sc = st->priv_data;
1341             mxf_essence_container_uls[sc->index].write_desc(s, st);
1342         }
1343     }
1344 }
1345
1346 static int mxf_write_essence_container_data(AVFormatContext *s)
1347 {
1348     AVIOContext *pb = s->pb;
1349
1350     mxf_write_metadata_key(pb, 0x012300);
1351     klv_encode_ber_length(pb, 72);
1352
1353     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1354     mxf_write_uuid(pb, EssenceContainerData, 0);
1355
1356     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1357     mxf_write_umid(s, 1);
1358
1359     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1360     avio_wb32(pb, 1);
1361
1362     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1363     avio_wb32(pb, 2);
1364
1365     return 0;
1366 }
1367
1368 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1369 {
1370     const char *material_package_name = NULL;
1371     const char *file_package_name = NULL;
1372     AVDictionaryEntry *entry = NULL;
1373     AVStream *st = NULL;
1374     int i;
1375
1376     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
1377        material_package_name = entry->value;
1378
1379     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
1380         file_package_name = entry->value;
1381     } else {
1382         /* check if any of the streams contain a file_package_name */
1383         for (i = 0; i < s->nb_streams; i++) {
1384             st = s->streams[i];
1385             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
1386                 file_package_name = entry->value;
1387                 break;
1388             }
1389         }
1390     }
1391
1392     mxf_write_preface(s);
1393     mxf_write_identification(s);
1394     mxf_write_content_storage(s);
1395     mxf_write_package(s, MaterialPackage, material_package_name);
1396     mxf_write_package(s, SourcePackage, file_package_name);
1397     mxf_write_essence_container_data(s);
1398     return 0;
1399 }
1400
1401 static unsigned klv_fill_size(uint64_t size)
1402 {
1403     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1404     if (pad < 20) // smallest fill item possible
1405         return pad + KAG_SIZE;
1406     else
1407         return pad & (KAG_SIZE-1);
1408 }
1409
1410 static void mxf_write_index_table_segment(AVFormatContext *s)
1411 {
1412     MXFContext *mxf = s->priv_data;
1413     AVIOContext *pb = s->pb;
1414     int i, j, temporal_reordering = 0;
1415     int key_index = mxf->last_key_index;
1416
1417     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1418
1419     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1420         return;
1421
1422     avio_write(pb, index_table_segment_key, 16);
1423
1424     if (mxf->edit_unit_byte_count) {
1425         klv_encode_ber_length(pb, 80);
1426     } else {
1427         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +
1428                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));
1429     }
1430
1431     // instance id
1432     mxf_write_local_tag(pb, 16, 0x3C0A);
1433     mxf_write_uuid(pb, IndexTableSegment, 0);
1434
1435     // index edit rate
1436     mxf_write_local_tag(pb, 8, 0x3F0B);
1437     avio_wb32(pb, mxf->time_base.den);
1438     avio_wb32(pb, mxf->time_base.num);
1439
1440     // index start position
1441     mxf_write_local_tag(pb, 8, 0x3F0C);
1442     avio_wb64(pb, mxf->last_indexed_edit_unit);
1443
1444     // index duration
1445     mxf_write_local_tag(pb, 8, 0x3F0D);
1446     if (mxf->edit_unit_byte_count)
1447         avio_wb64(pb, 0); // index table covers whole container
1448     else
1449         avio_wb64(pb, mxf->edit_units_count);
1450
1451     // edit unit byte count
1452     mxf_write_local_tag(pb, 4, 0x3F05);
1453     avio_wb32(pb, mxf->edit_unit_byte_count);
1454
1455     // index sid
1456     mxf_write_local_tag(pb, 4, 0x3F06);
1457     avio_wb32(pb, 2);
1458
1459     // body sid
1460     mxf_write_local_tag(pb, 4, 0x3F07);
1461     avio_wb32(pb, 1);
1462
1463     if (!mxf->edit_unit_byte_count) {
1464         // real slice count - 1
1465         mxf_write_local_tag(pb, 1, 0x3F08);
1466         avio_w8(pb, mxf->slice_count);
1467
1468         // delta entry array
1469         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1470         avio_wb32(pb, s->nb_streams+1); // num of entries
1471         avio_wb32(pb, 6);               // size of one entry
1472         // write system item delta entry
1473         avio_w8(pb, 0);
1474         avio_w8(pb, 0); // slice entry
1475         avio_wb32(pb, 0); // element delta
1476         for (i = 0; i < s->nb_streams; i++) {
1477             AVStream *st = s->streams[i];
1478             MXFStreamContext *sc = st->priv_data;
1479             avio_w8(pb, sc->temporal_reordering);
1480             if (sc->temporal_reordering)
1481                 temporal_reordering = 1;
1482             if (i == 0) { // video track
1483                 avio_w8(pb, 0); // slice number
1484                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1485             } else { // audio track
1486                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1487                 audio_frame_size += klv_fill_size(audio_frame_size);
1488                 avio_w8(pb, 1);
1489                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1490             }
1491         }
1492
1493         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1494         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1495         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
1496
1497         for (i = 0; i < mxf->edit_units_count; i++) {
1498             int temporal_offset = 0;
1499
1500             if (!(mxf->index_entries[i].flags & 0x33)) { // I-frame
1501                 mxf->last_key_index = key_index;
1502                 key_index = i;
1503             }
1504
1505             if (temporal_reordering) {
1506                 int pic_num_in_gop = i - key_index;
1507                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1508                     for (j = key_index; j < mxf->edit_units_count; j++) {
1509                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1510                             break;
1511                     }
1512                     if (j == mxf->edit_units_count)
1513                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1514                     temporal_offset = j - key_index - pic_num_in_gop;
1515                 }
1516             }
1517             avio_w8(pb, temporal_offset);
1518
1519             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1520                 avio_w8(pb, mxf->last_key_index - i);
1521             } else {
1522                 avio_w8(pb, key_index - i); // key frame offset
1523                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1524                     mxf->last_key_index = key_index;
1525             }
1526
1527             if (!(mxf->index_entries[i].flags & 0x33) && // I-frame
1528                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1529                 mxf->index_entries[i].flags |= 0x80; // random access
1530             avio_w8(pb, mxf->index_entries[i].flags);
1531             // stream offset
1532             avio_wb64(pb, mxf->index_entries[i].offset);
1533             if (s->nb_streams > 1)
1534                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1535         }
1536
1537         mxf->last_key_index = key_index - mxf->edit_units_count;
1538         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1539         mxf->edit_units_count = 0;
1540     }
1541 }
1542
1543 static void mxf_write_klv_fill(AVFormatContext *s)
1544 {
1545     unsigned pad = klv_fill_size(avio_tell(s->pb));
1546     if (pad) {
1547         avio_write(s->pb, klv_fill_key, 16);
1548         pad -= 16 + 4;
1549         klv_encode_ber4_length(s->pb, pad);
1550         ffio_fill(s->pb, 0, pad);
1551         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1552     }
1553 }
1554
1555 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1556                                 int indexsid,
1557                                 const uint8_t *key, int write_metadata)
1558 {
1559     MXFContext *mxf = s->priv_data;
1560     AVIOContext *pb = s->pb;
1561     int64_t header_byte_count_offset;
1562     unsigned index_byte_count = 0;
1563     uint64_t partition_offset = avio_tell(pb);
1564     int err;
1565
1566     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1567         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1568             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1569     else if (mxf->edit_unit_byte_count && indexsid)
1570         index_byte_count = 80;
1571
1572     if (index_byte_count) {
1573         // add encoded ber length
1574         index_byte_count += 16 + klv_ber_length(index_byte_count);
1575         index_byte_count += klv_fill_size(index_byte_count);
1576     }
1577
1578     if (key && !memcmp(key, body_partition_key, 16)) {
1579         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1580                                      sizeof(*mxf->body_partition_offset))) < 0) {
1581             mxf->body_partitions_count = 0;
1582             return err;
1583         }
1584         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1585     }
1586
1587     // write klv
1588     if (key)
1589         avio_write(pb, key, 16);
1590     else
1591         avio_write(pb, body_partition_key, 16);
1592
1593     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1594
1595     // write partition value
1596     avio_wb16(pb, 1); // majorVersion
1597     avio_wb16(pb, 2); // minorVersion
1598     avio_wb32(pb, KAG_SIZE); // KAGSize
1599
1600     avio_wb64(pb, partition_offset); // ThisPartition
1601
1602     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1603         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1604     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1605         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1606     else
1607         avio_wb64(pb, 0);
1608
1609     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1610
1611     // set offset
1612     header_byte_count_offset = avio_tell(pb);
1613     avio_wb64(pb, 0); // headerByteCount, update later
1614
1615     // indexTable
1616     avio_wb64(pb, index_byte_count); // indexByteCount
1617     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1618
1619     // BodyOffset
1620     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
1621         avio_wb64(pb, mxf->body_offset);
1622     else
1623         avio_wb64(pb, 0);
1624
1625     avio_wb32(pb, bodysid); // bodySID
1626
1627     // operational pattern
1628     if (s->oformat == &ff_mxf_opatom_muxer)
1629         avio_write(pb, opatom_ul, 16);
1630     else
1631         avio_write(pb, op1a_ul, 16);
1632
1633     // essence container
1634     mxf_write_essence_container_refs(s);
1635
1636     if (write_metadata) {
1637         // mark the start of the headermetadata and calculate metadata size
1638         int64_t pos, start;
1639         unsigned header_byte_count;
1640
1641         mxf_write_klv_fill(s);
1642         start = avio_tell(s->pb);
1643         mxf_write_primer_pack(s);
1644         mxf_write_header_metadata_sets(s);
1645         pos = avio_tell(s->pb);
1646         header_byte_count = pos - start + klv_fill_size(pos);
1647
1648         // update header_byte_count
1649         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1650         avio_wb64(pb, header_byte_count);
1651         avio_seek(pb, pos, SEEK_SET);
1652     }
1653
1654     if(key)
1655         avio_flush(pb);
1656
1657     return 0;
1658 }
1659
1660 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,
1661 AVPacket *pkt)
1662 {
1663     MXFContext *mxf = s->priv_data;
1664     MXFStreamContext *sc = st->priv_data;
1665     int i, cid;
1666     uint8_t* header_cid;
1667     int frame_size = 0;
1668
1669     if (mxf->header_written)
1670         return 1;
1671
1672     if (pkt->size < 43)
1673         return -1;
1674
1675     header_cid = pkt->data + 0x28;
1676     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];
1677
1678     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)
1679         return -1;
1680     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)
1681         return AVERROR_INVALIDDATA;
1682
1683     switch (cid) {
1684     case 1235:
1685         sc->index = 24;
1686         sc->component_depth = 10;
1687         break;
1688     case 1237:
1689         sc->index = 25;
1690         break;
1691     case 1238:
1692         sc->index = 26;
1693         break;
1694     case 1241:
1695         sc->index = 27;
1696         sc->component_depth = 10;
1697         break;
1698     case 1242:
1699         sc->index = 28;
1700         break;
1701     case 1243:
1702         sc->index = 29;
1703         break;
1704     case 1250:
1705         sc->index = 30;
1706         sc->component_depth = 10;
1707         break;
1708     case 1251:
1709         sc->index = 31;
1710         break;
1711     case 1252:
1712         sc->index = 32;
1713         break;
1714     case 1253:
1715         sc->index = 33;
1716         break;
1717     default:
1718         return -1;
1719     }
1720
1721     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1722     sc->aspect_ratio = (AVRational){ 16, 9 };
1723
1724     if(s->oformat == &ff_mxf_opatom_muxer){
1725         mxf->edit_unit_byte_count = frame_size;
1726         return 1;
1727     }
1728
1729     mxf->edit_unit_byte_count = KAG_SIZE;
1730     for (i = 0; i < s->nb_streams; i++) {
1731         AVStream *st = s->streams[i];
1732         MXFStreamContext *sc = st->priv_data;
1733         if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1734             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1735             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1736         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1737             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1738             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1739         }
1740     }
1741
1742     return 1;
1743 }
1744
1745 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1746 {
1747     MXFContext *mxf = s->priv_data;
1748     MXFStreamContext *sc = st->priv_data;
1749     uint8_t *vs_pack, *vsc_pack;
1750     int i, ul_index, frame_size, stype, pal;
1751
1752     if (mxf->header_written)
1753         return 1;
1754
1755     // Check for minimal frame size
1756     if (pkt->size < 120000)
1757         return -1;
1758
1759     vs_pack  = pkt->data + 80*5 + 48;
1760     vsc_pack = pkt->data + 80*5 + 53;
1761     stype    = vs_pack[3] & 0x1f;
1762     pal      = (vs_pack[3] >> 5) & 0x1;
1763
1764     if ((vs_pack[2] & 0x07) == 0x02)
1765         sc->aspect_ratio = (AVRational){ 16, 9 };
1766     else
1767         sc->aspect_ratio = (AVRational){ 4, 3 };
1768
1769     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
1770     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
1771     // and set field dominance accordingly
1772     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
1773
1774     switch (stype) {
1775     case 0x18: // DV100 720p
1776         ul_index = 6 + pal;
1777         frame_size = pal ? 288000 : 240000;
1778         if (sc->interlaced) {
1779             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
1780             sc->interlaced = 0;
1781         }
1782         break;
1783     case 0x14: // DV100 1080i
1784         ul_index = 4 + pal;
1785         frame_size = pal ? 576000 : 480000;
1786         break;
1787     case 0x04: // DV50
1788         ul_index = 2 + pal;
1789         frame_size = pal ? 288000 : 240000;
1790         break;
1791     default: // DV25
1792         ul_index = 0 + pal;
1793         frame_size = pal ? 144000 : 120000;
1794     }
1795
1796     sc->index = ul_index + 16;
1797     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
1798
1799     if(s->oformat == &ff_mxf_opatom_muxer) {
1800         mxf->edit_unit_byte_count = frame_size;
1801         return 1;
1802     }
1803
1804     mxf->edit_unit_byte_count = KAG_SIZE;
1805     for (i = 0; i < s->nb_streams; i++) {
1806         AVStream *st = s->streams[i];
1807         MXFStreamContext *sc = st->priv_data;
1808         if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
1809             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1810             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1811         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
1812             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1813             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1814         }
1815     }
1816
1817     return 1;
1818 }
1819
1820 static const struct {
1821     UID uid;
1822     int frame_size;
1823     int profile;
1824     uint8_t interlaced;
1825 } mxf_h264_codec_uls[] = {
1826     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x31,0x11,0x01 },      0,  66, 0 }, // AVC Baseline, Unconstrained Coding
1827     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra
1828     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60
1829     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50
1830     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30
1831     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25
1832     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60
1833     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50
1834     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra
1835     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60
1836     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50
1837     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30
1838     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25
1839     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60
1840     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50
1841 };
1842
1843 static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
1844                                 AVPacket *pkt, MXFIndexEntry *e)
1845 {
1846     MXFContext *mxf = s->priv_data;
1847     MXFStreamContext *sc = st->priv_data;
1848     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);
1849     const uint8_t *buf = pkt->data;
1850     const uint8_t *buf_end = pkt->data + pkt->size;
1851     uint32_t state = -1;
1852     int extra_size = 512; // support AVC Intra files without SPS/PPS header
1853     int i, frame_size;
1854     uint8_t uid_found;
1855
1856     if (pkt->size > extra_size)
1857         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header
1858
1859     for (;;) {
1860         buf = avpriv_find_start_code(buf, buf_end, &state);
1861         if (buf >= buf_end)
1862             break;
1863         --buf;
1864         switch (state & 0x1f) {
1865         case H264_NAL_SPS:
1866             st->codecpar->profile = buf[1];
1867             e->flags |= 0x40;
1868             break;
1869         case H264_NAL_PPS:
1870             if (e->flags & 0x40) { // sequence header present
1871                 e->flags |= 0x80; // random access
1872                 extra_size = 0;
1873                 buf = buf_end;
1874             }
1875             break;
1876         default:
1877             break;
1878         }
1879     }
1880
1881     if (mxf->header_written)
1882         return 1;
1883
1884     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD
1885     sc->component_depth = 10; // AVC Intra is always 10 Bit
1886     sc->interlaced = st->codecpar->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;
1887     if (sc->interlaced)
1888         sc->field_dominance = 1; // top field first is mandatory for AVC Intra
1889
1890     uid_found = 0;
1891     frame_size = pkt->size + extra_size;
1892     for (i = 0; i < mxf_h264_num_codec_uls; i++) {
1893         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {
1894             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1895             return 1;
1896         } else if (st->codecpar->profile == mxf_h264_codec_uls[i].profile) {
1897             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1898             uid_found = 1;
1899         }
1900     }
1901
1902     if (!uid_found) {
1903         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");
1904         return 0;
1905     }
1906
1907     return 1;
1908 }
1909
1910 static const UID mxf_mpeg2_codec_uls[] = {
1911     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1912     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1913     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1914     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1915     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1916     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1917     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1918     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1919     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
1920     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
1921 };
1922
1923 static const UID *mxf_get_mpeg2_codec_ul(AVCodecParameters *par)
1924 {
1925     int long_gop = 1;
1926
1927     if (par->profile == 4) { // Main
1928         if (par->level == 8) // Main
1929             return &mxf_mpeg2_codec_uls[0+long_gop];
1930         else if (par->level == 4) // High
1931             return &mxf_mpeg2_codec_uls[4+long_gop];
1932         else if (par->level == 6) // High 14
1933             return &mxf_mpeg2_codec_uls[8+long_gop];
1934     } else if (par->profile == 0) { // 422
1935         if (par->level == 5) // Main
1936             return &mxf_mpeg2_codec_uls[2+long_gop];
1937         else if (par->level == 2) // High
1938             return &mxf_mpeg2_codec_uls[6+long_gop];
1939     }
1940     return NULL;
1941 }
1942
1943 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
1944                                  AVPacket *pkt, MXFIndexEntry *e)
1945 {
1946     MXFStreamContext *sc = st->priv_data;
1947     uint32_t c = -1;
1948     int i;
1949
1950     for(i = 0; i < pkt->size - 4; i++) {
1951         c = (c<<8) + pkt->data[i];
1952         if (c == 0x1b5) {
1953             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1954                 st->codecpar->profile = pkt->data[i+1] & 0x07;
1955                 st->codecpar->level   = pkt->data[i+2] >> 4;
1956             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1957                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1958                 if (sc->interlaced)
1959                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
1960                 break;
1961             }
1962         } else if (c == 0x1b8) { // gop
1963             if (pkt->data[i+4]>>6 & 0x01) { // closed
1964                 sc->closed_gop = 1;
1965                 if (e->flags & 0x40) // sequence header present
1966                     e->flags |= 0x80; // random access
1967             }
1968         } else if (c == 0x1b3) { // seq
1969             e->flags |= 0x40;
1970             switch ((pkt->data[i+4]>>4) & 0xf) {
1971             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1972             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1973             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1974             default:
1975                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1976                           st->codecpar->width, st->codecpar->height, 1024*1024);
1977             }
1978         } else if (c == 0x100) { // pic
1979             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1980             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
1981             if (pict_type == 2) { // P-frame
1982                 e->flags |= 0x22;
1983                 sc->closed_gop = 0; // reset closed GOP, don't matter anymore
1984             } else if (pict_type == 3) { // B-frame
1985                 if (sc->closed_gop)
1986                     e->flags |= 0x13; // only backward prediction
1987                 else
1988                     e->flags |= 0x33;
1989                 sc->temporal_reordering = -1;
1990             } else if (!pict_type) {
1991                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1992                 return 0;
1993             }
1994         }
1995     }
1996     if (s->oformat != &ff_mxf_d10_muxer)
1997         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codecpar);
1998     return !!sc->codec_ul;
1999 }
2000
2001 static uint64_t mxf_parse_timestamp(time_t timestamp)
2002 {
2003     struct tm tmbuf;
2004     struct tm *time = gmtime_r(&timestamp, &tmbuf);
2005     if (!time)
2006         return 0;
2007     return (uint64_t)(time->tm_year+1900) << 48 |
2008            (uint64_t)(time->tm_mon+1)     << 40 |
2009            (uint64_t) time->tm_mday       << 32 |
2010                       time->tm_hour       << 24 |
2011                       time->tm_min        << 16 |
2012                       time->tm_sec        << 8;
2013 }
2014
2015 static void mxf_gen_umid(AVFormatContext *s)
2016 {
2017     MXFContext *mxf = s->priv_data;
2018     uint32_t seed = av_get_random_seed();
2019     uint64_t umid = seed + 0x5294713400000000LL;
2020
2021     AV_WB64(mxf->umid  , umid);
2022     AV_WB64(mxf->umid+8, umid>>8);
2023
2024     mxf->instance_number = seed & 0xFFFFFF;
2025 }
2026
2027 static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)
2028 {
2029     MXFContext *mxf = s->priv_data;
2030     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
2031     if (!tcr)
2032         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2033
2034     if (tcr)
2035         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
2036     else
2037         return av_timecode_init(&mxf->tc, rate, 0, 0, s);
2038 }
2039
2040 static int mxf_write_header(AVFormatContext *s)
2041 {
2042     MXFContext *mxf = s->priv_data;
2043     int i, ret;
2044     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
2045     const MXFSamplesPerFrame *spf = NULL;
2046     int64_t timestamp = 0;
2047
2048     if (!s->nb_streams)
2049         return -1;
2050
2051     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1){
2052         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
2053         return -1;
2054     }
2055
2056     if (!av_dict_get(s->metadata, "comment_", NULL, AV_DICT_IGNORE_SUFFIX))
2057         mxf->store_user_comments = 0;
2058
2059     for (i = 0; i < s->nb_streams; i++) {
2060         AVStream *st = s->streams[i];
2061         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
2062         if (!sc)
2063             return AVERROR(ENOMEM);
2064         st->priv_data = sc;
2065
2066         if (((i == 0) ^ (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
2067             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
2068             return -1;
2069         }
2070
2071         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
2072             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codecpar->format);
2073             // TODO: should be avg_frame_rate
2074             AVRational rate, tbc = st->time_base;
2075             // Default component depth to 8
2076             sc->component_depth = 8;
2077             sc->h_chroma_sub_sample = 2;
2078             sc->color_siting = 0xFF;
2079
2080             if (pix_desc) {
2081                 sc->component_depth     = pix_desc->comp[0].depth;
2082                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
2083             }
2084             switch (ff_choose_chroma_location(s, st)) {
2085             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;
2086             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;
2087             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;
2088             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;
2089             }
2090
2091             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2092             spf = ff_mxf_get_samples_per_frame(s, tbc);
2093             if (!spf) {
2094                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
2095                        tbc.den, tbc.num);
2096                 return AVERROR(EINVAL);
2097             }
2098             mxf->time_base = spf->time_base;
2099             rate = av_inv_q(mxf->time_base);
2100             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
2101             if((ret = mxf_init_timecode(s, st, rate)) < 0)
2102                 return ret;
2103
2104             sc->video_bit_rate = st->codecpar->bit_rate;
2105             if (s->oformat == &ff_mxf_d10_muxer) {
2106                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {
2107                     sc->index = 3;
2108                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && (mxf->time_base.den != 25)) {
2109                     sc->index = 5;
2110                 } else if (sc->video_bit_rate == 40000000) {
2111                     if (mxf->time_base.den == 25) sc->index = 7;
2112                     else                          sc->index = 9;
2113                 } else if (sc->video_bit_rate == 30000000) {
2114                     if (mxf->time_base.den == 25) sc->index = 11;
2115                     else                          sc->index = 13;
2116                 } else {
2117                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
2118                     return -1;
2119                 }
2120
2121                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
2122                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *
2123                     mxf->time_base.num / (8*mxf->time_base.den);
2124                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2125                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;
2126                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2127
2128                 sc->signal_standard = 1;
2129             }
2130             if (mxf->signal_standard >= 0)
2131                 sc->signal_standard = mxf->signal_standard;
2132         } else if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
2133             if (st->codecpar->sample_rate != 48000) {
2134                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
2135                 return -1;
2136             }
2137             avpriv_set_pts_info(st, 64, 1, st->codecpar->sample_rate);
2138             if (s->oformat == &ff_mxf_d10_muxer) {
2139                 if (st->index != 1) {
2140                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
2141                     return -1;
2142                 }
2143                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2144                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2145                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
2146                 }
2147                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
2148             } else if (s->oformat == &ff_mxf_opatom_muxer) {
2149                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
2150
2151                 if (st->codecpar->codec_id != AV_CODEC_ID_PCM_S16LE &&
2152                     st->codecpar->codec_id != AV_CODEC_ID_PCM_S24LE) {
2153                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
2154                     return AVERROR_PATCHWELCOME;
2155                 }
2156                 if (st->codecpar->channels != 1) {
2157                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
2158                     return AVERROR(EINVAL);
2159                 }
2160
2161                 spf = ff_mxf_get_samples_per_frame(s, tbc);
2162                 if (!spf){
2163                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);
2164                     return AVERROR(EINVAL);
2165                 }
2166
2167                 mxf->time_base = st->time_base;
2168                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)
2169                     return ret;
2170
2171                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2172                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codecpar->codec_id) * st->codecpar->channels) >> 3;
2173                 sc->index = 2;
2174             } else {
2175                 mxf->slice_count = 1;
2176             }
2177         }
2178
2179         if (!sc->index) {
2180             sc->index = mxf_get_essence_container_ul_index(st->codecpar->codec_id);
2181             if (sc->index == -1) {
2182                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
2183                        "codec not currently supported in container\n", i);
2184                 return -1;
2185             }
2186         }
2187
2188         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
2189
2190         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
2191         sc->track_essence_element_key[15] = present[sc->index];
2192         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
2193
2194         if (!present[sc->index])
2195             mxf->essence_container_count++;
2196         present[sc->index]++;
2197     }
2198
2199     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
2200         mxf->essence_container_count = 1;
2201     }
2202
2203     if (!(s->flags & AVFMT_FLAG_BITEXACT))
2204         mxf_gen_umid(s);
2205
2206     for (i = 0; i < s->nb_streams; i++) {
2207         MXFStreamContext *sc = s->streams[i]->priv_data;
2208         // update element count
2209         sc->track_essence_element_key[13] = present[sc->index];
2210         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
2211             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
2212         else
2213             sc->order = AV_RB32(sc->track_essence_element_key+12);
2214     }
2215
2216     if (ff_parse_creation_time_metadata(s, &timestamp, 1) > 0)
2217         mxf->timestamp = mxf_parse_timestamp(timestamp);
2218     mxf->duration = -1;
2219
2220     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
2221     if (!mxf->timecode_track)
2222         return AVERROR(ENOMEM);
2223     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
2224     if (!mxf->timecode_track->priv_data)
2225         return AVERROR(ENOMEM);
2226     mxf->timecode_track->index = -1;
2227
2228     if (!spf)
2229         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
2230
2231     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
2232         return -1;
2233
2234     return 0;
2235 }
2236
2237 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
2238 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 };
2239
2240 static void mxf_write_system_item(AVFormatContext *s)
2241 {
2242     MXFContext *mxf = s->priv_data;
2243     AVIOContext *pb = s->pb;
2244     unsigned frame;
2245     uint32_t time_code;
2246
2247     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2248
2249     // write system metadata pack
2250     avio_write(pb, system_metadata_pack_key, 16);
2251     klv_encode_ber4_length(pb, 57);
2252     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
2253     avio_w8(pb, 0x04); // content package rate
2254     avio_w8(pb, 0x00); // content package type
2255     avio_wb16(pb, 0x00); // channel handle
2256     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow
2257     if (mxf->essence_container_count > 1)
2258         avio_write(pb, multiple_desc_ul, 16);
2259     else {
2260         MXFStreamContext *sc = s->streams[0]->priv_data;
2261         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
2262     }
2263     avio_w8(pb, 0);
2264     avio_wb64(pb, 0);
2265     avio_wb64(pb, 0); // creation date/time stamp
2266
2267     avio_w8(pb, 0x81); // SMPTE 12M time code
2268     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
2269     avio_wb32(pb, time_code);
2270     avio_wb32(pb, 0); // binary group data
2271     avio_wb64(pb, 0);
2272
2273     // write system metadata package set
2274     avio_write(pb, system_metadata_package_set_key, 16);
2275     klv_encode_ber4_length(pb, 35);
2276     avio_w8(pb, 0x83); // UMID
2277     avio_wb16(pb, 0x20);
2278     mxf_write_umid(s, 1);
2279 }
2280
2281 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2282 {
2283     MXFContext *mxf = s->priv_data;
2284     AVIOContext *pb = s->pb;
2285     MXFStreamContext *sc = st->priv_data;
2286     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /
2287         (8*mxf->time_base.den); // frame size
2288     int pad;
2289
2290     packet_size += 16 + 4;
2291     packet_size += klv_fill_size(packet_size);
2292
2293     klv_encode_ber4_length(pb, pkt->size);
2294     avio_write(pb, pkt->data, pkt->size);
2295
2296     // ensure CBR muxing by padding to correct video frame size
2297     pad = packet_size - pkt->size - 16 - 4;
2298     if (pad > 20) {
2299         avio_write(s->pb, klv_fill_key, 16);
2300         pad -= 16 + 4;
2301         klv_encode_ber4_length(s->pb, pad);
2302         ffio_fill(s->pb, 0, pad);
2303         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
2304     } else {
2305         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
2306         ffio_fill(s->pb, 0, pad);
2307     }
2308 }
2309
2310 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2311 {
2312     MXFContext *mxf = s->priv_data;
2313     AVIOContext *pb = s->pb;
2314     int frame_size = pkt->size / st->codecpar->block_align;
2315     uint8_t *samples = pkt->data;
2316     uint8_t *end = pkt->data + pkt->size;
2317     int i;
2318
2319     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
2320
2321     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
2322     avio_wl16(pb, frame_size);
2323     avio_w8(pb, (1<<st->codecpar->channels)-1);
2324
2325     while (samples < end) {
2326         for (i = 0; i < st->codecpar->channels; i++) {
2327             uint32_t sample;
2328             if (st->codecpar->codec_id == AV_CODEC_ID_PCM_S24LE) {
2329                 sample = AV_RL24(samples)<< 4;
2330                 samples += 3;
2331             } else {
2332                 sample = AV_RL16(samples)<<12;
2333                 samples += 2;
2334             }
2335             avio_wl32(pb, sample | i);
2336         }
2337         for (; i < 8; i++)
2338             avio_wl32(pb, i);
2339     }
2340 }
2341
2342 static int mxf_write_opatom_body_partition(AVFormatContext *s)
2343 {
2344     MXFContext *mxf = s->priv_data;
2345     AVIOContext *pb = s->pb;
2346     AVStream *st = s->streams[0];
2347     MXFStreamContext *sc = st->priv_data;
2348     const uint8_t *key = NULL;
2349
2350     int err;
2351
2352     if (!mxf->header_written)
2353         key = body_partition_key;
2354
2355     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)
2356         return err;
2357     mxf_write_klv_fill(s);
2358     avio_write(pb, sc->track_essence_element_key, 16);
2359     klv_encode_ber9_length(pb, mxf->body_offset);
2360     return 0;
2361 }
2362
2363 static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)
2364 {
2365     MXFContext *mxf = s->priv_data;
2366     AVIOContext *pb = s->pb;
2367
2368     int err;
2369
2370     if (!mxf->header_written) {
2371         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2372             return err;
2373         mxf_write_klv_fill(s);
2374
2375         if ((err = mxf_write_opatom_body_partition(s)) < 0)
2376             return err;
2377         mxf->header_written = 1;
2378     }
2379
2380     if (!mxf->edit_unit_byte_count) {
2381         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2382         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;
2383         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;
2384     }
2385     mxf->edit_units_count++;
2386     avio_write(pb, pkt->data, pkt->size);
2387     mxf->body_offset += pkt->size;
2388     avio_flush(pb);
2389
2390     return 0;
2391 }
2392
2393 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
2394 {
2395     MXFContext *mxf = s->priv_data;
2396     AVIOContext *pb = s->pb;
2397     AVStream *st = s->streams[pkt->stream_index];
2398     MXFStreamContext *sc = st->priv_data;
2399     MXFIndexEntry ie = {0};
2400     int err;
2401
2402     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
2403         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
2404                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
2405             mxf->edit_units_count = 0;
2406             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
2407             return err;
2408         }
2409     }
2410
2411     if (st->codecpar->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2412         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
2413             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
2414             return -1;
2415         }
2416     } else if (st->codecpar->codec_id == AV_CODEC_ID_DNXHD) {
2417         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
2418             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
2419             return -1;
2420         }
2421     } else if (st->codecpar->codec_id == AV_CODEC_ID_DVVIDEO) {
2422         if (!mxf_parse_dv_frame(s, st, pkt)) {
2423             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
2424             return -1;
2425         }
2426     } else if (st->codecpar->codec_id == AV_CODEC_ID_H264) {
2427         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {
2428             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");
2429             return -1;
2430         }
2431     }
2432
2433     if (s->oformat == &ff_mxf_opatom_muxer)
2434         return mxf_write_opatom_packet(s, pkt, &ie);
2435
2436     if (!mxf->header_written) {
2437         if (mxf->edit_unit_byte_count) {
2438             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
2439                 return err;
2440             mxf_write_klv_fill(s);
2441             mxf_write_index_table_segment(s);
2442         } else {
2443             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2444                 return err;
2445         }
2446         mxf->header_written = 1;
2447     }
2448
2449     if (st->index == 0) {
2450         if (!mxf->edit_unit_byte_count &&
2451             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
2452             !(ie.flags & 0x33)) { // I-frame, GOP start
2453             mxf_write_klv_fill(s);
2454             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
2455                 return err;
2456             mxf_write_klv_fill(s);
2457             mxf_write_index_table_segment(s);
2458         }
2459
2460         mxf_write_klv_fill(s);
2461         mxf_write_system_item(s);
2462
2463         if (!mxf->edit_unit_byte_count) {
2464             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2465             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2466             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2467             mxf->body_offset += KAG_SIZE; // size of system element
2468         }
2469         mxf->edit_units_count++;
2470     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2471         if (!mxf->edit_units_count) {
2472             av_log(s, AV_LOG_ERROR, "No packets in first stream\n");
2473             return AVERROR_PATCHWELCOME;
2474         }
2475         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2476             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2477     }
2478
2479     mxf_write_klv_fill(s);
2480     avio_write(pb, sc->track_essence_element_key, 16); // write key
2481     if (s->oformat == &ff_mxf_d10_muxer) {
2482         if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
2483             mxf_write_d10_video_packet(s, st, pkt);
2484         else
2485             mxf_write_d10_audio_packet(s, st, pkt);
2486     } else {
2487         klv_encode_ber4_length(pb, pkt->size); // write length
2488         avio_write(pb, pkt->data, pkt->size);
2489         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2490     }
2491
2492     avio_flush(pb);
2493
2494     return 0;
2495 }
2496
2497 static void mxf_write_random_index_pack(AVFormatContext *s)
2498 {
2499     MXFContext *mxf = s->priv_data;
2500     AVIOContext *pb = s->pb;
2501     uint64_t pos = avio_tell(pb);
2502     int i;
2503
2504     avio_write(pb, random_index_pack_key, 16);
2505     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
2506
2507     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
2508         avio_wb32(pb, 1); // BodySID of header partition
2509     else
2510         avio_wb32(pb, 0);
2511     avio_wb64(pb, 0); // offset of header partition
2512
2513     for (i = 0; i < mxf->body_partitions_count; i++) {
2514         avio_wb32(pb, 1); // BodySID
2515         avio_wb64(pb, mxf->body_partition_offset[i]);
2516     }
2517
2518     avio_wb32(pb, 0); // BodySID of footer partition
2519     avio_wb64(pb, mxf->footer_partition_offset);
2520
2521     avio_wb32(pb, avio_tell(pb) - pos + 4);
2522 }
2523
2524 static int mxf_write_footer(AVFormatContext *s)
2525 {
2526     MXFContext *mxf = s->priv_data;
2527     AVIOContext *pb = s->pb;
2528     int err = 0;
2529
2530     if (!mxf->header_written ||
2531         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
2532         /* reason could be invalid options/not supported codec/out of memory */
2533         err = AVERROR_UNKNOWN;
2534         goto end;
2535     }
2536
2537     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2538
2539     mxf_write_klv_fill(s);
2540     mxf->footer_partition_offset = avio_tell(pb);
2541     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
2542         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
2543             goto end;
2544     } else {
2545         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
2546             goto end;
2547         mxf_write_klv_fill(s);
2548         mxf_write_index_table_segment(s);
2549     }
2550
2551     mxf_write_klv_fill(s);
2552     mxf_write_random_index_pack(s);
2553
2554     if (s->pb->seekable) {
2555         if (s->oformat == &ff_mxf_opatom_muxer){
2556             /* rewrite body partition to update lengths */
2557             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
2558             if ((err = mxf_write_opatom_body_partition(s)) < 0)
2559                 goto end;
2560         }
2561
2562         avio_seek(pb, 0, SEEK_SET);
2563         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
2564             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
2565                 goto end;
2566             mxf_write_klv_fill(s);
2567             mxf_write_index_table_segment(s);
2568         } else {
2569             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
2570                 goto end;
2571         }
2572     }
2573
2574 end:
2575     ff_audio_interleave_close(s);
2576
2577     av_freep(&mxf->index_entries);
2578     av_freep(&mxf->body_partition_offset);
2579     av_freep(&mxf->timecode_track->priv_data);
2580     av_freep(&mxf->timecode_track);
2581
2582     mxf_free(s);
2583
2584     return err < 0 ? err : 0;
2585 }
2586
2587 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2588 {
2589     int i, stream_count = 0;
2590
2591     for (i = 0; i < s->nb_streams; i++)
2592         stream_count += !!s->streams[i]->last_in_packet_buffer;
2593
2594     if (stream_count && (s->nb_streams == stream_count || flush)) {
2595         AVPacketList *pktl = s->internal->packet_buffer;
2596         if (s->nb_streams != stream_count) {
2597             AVPacketList *last = NULL;
2598             // find last packet in edit unit
2599             while (pktl) {
2600                 if (!stream_count || pktl->pkt.stream_index == 0)
2601                     break;
2602                 last = pktl;
2603                 pktl = pktl->next;
2604                 stream_count--;
2605             }
2606             // purge packet queue
2607             while (pktl) {
2608                 AVPacketList *next = pktl->next;
2609
2610                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2611                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2612                 av_packet_unref(&pktl->pkt);
2613                 av_freep(&pktl);
2614                 pktl = next;
2615             }
2616             if (last)
2617                 last->next = NULL;
2618             else {
2619                 s->internal->packet_buffer = NULL;
2620                 s->internal->packet_buffer_end= NULL;
2621                 goto out;
2622             }
2623             pktl = s->internal->packet_buffer;
2624         }
2625
2626         *out = pktl->pkt;
2627         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
2628         s->internal->packet_buffer = pktl->next;
2629         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2630             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2631         if(!s->internal->packet_buffer)
2632             s->internal->packet_buffer_end= NULL;
2633         av_freep(&pktl);
2634         return 1;
2635     } else {
2636     out:
2637         av_init_packet(out);
2638         return 0;
2639     }
2640 }
2641
2642 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2643 {
2644     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
2645     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
2646
2647     return next->dts > pkt->dts ||
2648         (next->dts == pkt->dts && sc->order < sc2->order);
2649 }
2650
2651 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2652 {
2653     return ff_audio_rechunk_interleave(s, out, pkt, flush,
2654                                mxf_interleave_get_packet, mxf_compare_timestamps);
2655 }
2656
2657 #define MXF_COMMON_OPTIONS \
2658     { "signal_standard", "Force/set Sigal Standard",\
2659       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2660     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\
2661       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2662     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\
2663       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2664     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\
2665       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2666     { "smpte274m", "SMPTE 274M (1125 line)",\
2667       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2668     { "smpte296m", "SMPTE 296M (750 line progressive)",\
2669       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2670     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\
2671       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2672     { "smpte428", "SMPTE 428-1 DCDM",\
2673       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},
2674
2675
2676
2677 static const AVOption mxf_options[] = {
2678     MXF_COMMON_OPTIONS
2679     { "store_user_comments", "",
2680       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
2681     { NULL },
2682 };
2683
2684 static const AVClass mxf_muxer_class = {
2685     .class_name     = "MXF muxer",
2686     .item_name      = av_default_item_name,
2687     .option         = mxf_options,
2688     .version        = LIBAVUTIL_VERSION_INT,
2689 };
2690
2691 static const AVOption d10_options[] = {
2692     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
2693       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
2694     MXF_COMMON_OPTIONS
2695     { "store_user_comments", "",
2696       offsetof(MXFContext, store_user_comments), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, AV_OPT_FLAG_ENCODING_PARAM},
2697     { NULL },
2698 };
2699
2700 static const AVClass mxf_d10_muxer_class = {
2701     .class_name     = "MXF-D10 muxer",
2702     .item_name      = av_default_item_name,
2703     .option         = d10_options,
2704     .version        = LIBAVUTIL_VERSION_INT,
2705 };
2706
2707 static const AVOption opatom_options[] = {
2708     { "mxf_audio_edit_rate", "Audio edit rate for timecode",
2709         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2710     MXF_COMMON_OPTIONS
2711     { NULL },
2712 };
2713
2714 static const AVClass mxf_opatom_muxer_class = {
2715     .class_name     = "MXF-OPAtom muxer",
2716     .item_name      = av_default_item_name,
2717     .option         = opatom_options,
2718     .version        = LIBAVUTIL_VERSION_INT,
2719 };
2720
2721 AVOutputFormat ff_mxf_muxer = {
2722     .name              = "mxf",
2723     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
2724     .mime_type         = "application/mxf",
2725     .extensions        = "mxf",
2726     .priv_data_size    = sizeof(MXFContext),
2727     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2728     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2729     .write_header      = mxf_write_header,
2730     .write_packet      = mxf_write_packet,
2731     .write_trailer     = mxf_write_footer,
2732     .flags             = AVFMT_NOTIMESTAMPS,
2733     .interleave_packet = mxf_interleave,
2734     .priv_class        = &mxf_muxer_class,
2735 };
2736
2737 AVOutputFormat ff_mxf_d10_muxer = {
2738     .name              = "mxf_d10",
2739     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
2740     .mime_type         = "application/mxf",
2741     .priv_data_size    = sizeof(MXFContext),
2742     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2743     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2744     .write_header      = mxf_write_header,
2745     .write_packet      = mxf_write_packet,
2746     .write_trailer     = mxf_write_footer,
2747     .flags             = AVFMT_NOTIMESTAMPS,
2748     .interleave_packet = mxf_interleave,
2749     .priv_class        = &mxf_d10_muxer_class,
2750 };
2751
2752 AVOutputFormat ff_mxf_opatom_muxer = {
2753     .name              = "mxf_opatom",
2754     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
2755     .mime_type         = "application/mxf",
2756     .extensions        = "mxf",
2757     .priv_data_size    = sizeof(MXFContext),
2758     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2759     .video_codec       = AV_CODEC_ID_DNXHD,
2760     .write_header      = mxf_write_header,
2761     .write_packet      = mxf_write_packet,
2762     .write_trailer     = mxf_write_footer,
2763     .flags             = AVFMT_NOTIMESTAMPS,
2764     .interleave_packet = mxf_interleave,
2765     .priv_class        = &mxf_opatom_muxer_class,
2766 };