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

   1 /*
   2  * MXF muxer
   3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
   4  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /*
  24  * References
  25  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
  26  * SMPTE 377M MXF File Format Specifications
  27  * SMPTE 379M MXF Generic Container
  28  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
  29  * SMPTE 422M Mapping JPEG 2000 Codestreams into the MXF Generic Container
  30  * SMPTE RP210: SMPTE Metadata Dictionary
  31  * SMPTE RP224: Registry of SMPTE Universal Labels
  32  */
  33
  34 #include <inttypes.h>
  35 #include <math.h>
  36 #include <time.h>
  37
  38 #include "libavutil/opt.h"
  39 #include "libavutil/random_seed.h"
  40 #include "libavutil/timecode.h"
  41 #include "libavutil/avassert.h"
  42 #include "libavutil/pixdesc.h"
  43 #include "libavutil/time_internal.h"
  44 #include "libavcodec/bytestream.h"
  45 #include "libavcodec/dnxhddata.h"
  46 #include "libavcodec/h264.h"
  47 #include "libavcodec/internal.h"
  48 #include "audiointerleave.h"
  49 #include "avformat.h"
  50 #include "avio_internal.h"
  51 #include "internal.h"
  52 #include "mxf.h"
  53 #include "config.h"
  54
  55 extern AVOutputFormat ff_mxf_d10_muxer;
  56 extern AVOutputFormat ff_mxf_opatom_muxer;
  57
  58 #define EDIT_UNITS_PER_BODY 250
  59 #define KAG_SIZE 512
  60
  61 typedef struct MXFLocalTagPair {
  62     int local_tag;
  63     UID uid;
  64 } MXFLocalTagPair;
  65
  66 typedef struct MXFIndexEntry {
  67     uint8_t flags;
  68     uint64_t offset;
  69     unsigned slice_offset; ///< offset of audio slice
  70     uint16_t temporal_ref;
  71 } MXFIndexEntry;
  72
  73 typedef struct MXFStreamContext {
  74     AudioInterleaveContext aic;
  75     UID track_essence_element_key;
  76     int index;               ///< index in mxf_essence_container_uls table
  77     const UID *codec_ul;
  78     int order;               ///< interleaving order if dts are equal
  79     int interlaced;          ///< whether picture is interlaced
  80     int field_dominance;     ///< tff=1, bff=2
  81     int component_depth;
  82     int color_siting;
  83     int signal_standard;
  84     int h_chroma_sub_sample;
  85     int temporal_reordering;
  86     AVRational aspect_ratio; ///< display aspect ratio
  87     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
  88     int video_bit_rate;
  89 } MXFStreamContext;
  90
  91 typedef struct MXFContainerEssenceEntry {
  92     UID container_ul;
  93     UID element_ul;
  94     UID codec_ul;
  95     void (*write_desc)(AVFormatContext *, AVStream *);
  96 } MXFContainerEssenceEntry;
  97
  98 static const struct {
  99     enum AVCodecID id;
 100     int index;
 101 } mxf_essence_mappings[] = {
 102     { AV_CODEC_ID_MPEG2VIDEO, 0 },
 103     { AV_CODEC_ID_PCM_S24LE,  1 },
 104     { AV_CODEC_ID_PCM_S16LE,  1 },
 105     { AV_CODEC_ID_DVVIDEO,   15 },
 106     { AV_CODEC_ID_DNXHD,     24 },
 107     { AV_CODEC_ID_JPEG2000,  34 },
 108     { AV_CODEC_ID_H264,      35 },
 109     { AV_CODEC_ID_NONE }
 110 };
 111
 112 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
 113 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
 114 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
 115 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
 116 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
 117
 118 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
 119     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 120       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 121       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 122       mxf_write_mpegvideo_desc },
 123     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 124       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 125       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 126       mxf_write_aes3_desc },
 127     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 128       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 129       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 130       mxf_write_wav_desc },
 131     // D-10 625/50 PAL 50mb/s
 132     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 133       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 134       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 135       mxf_write_cdci_desc },
 136     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 137       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 138       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 139       mxf_write_generic_sound_desc },
 140     // D-10 525/60 NTSC 50mb/s
 141     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 142       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 143       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 144       mxf_write_cdci_desc },
 145     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 146       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 147       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 148       mxf_write_generic_sound_desc },
 149     // D-10 625/50 PAL 40mb/s
 150     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 151       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 152       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 153       mxf_write_cdci_desc },
 154     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 155       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 156       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 157       mxf_write_generic_sound_desc },
 158     // D-10 525/60 NTSC 40mb/s
 159     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 160       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 161       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 162       mxf_write_cdci_desc },
 163     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 164       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 165       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 166       mxf_write_generic_sound_desc },
 167     // D-10 625/50 PAL 30mb/s
 168     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 169       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 170       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 171       mxf_write_cdci_desc },
 172     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 173       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 174       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 175       mxf_write_generic_sound_desc },
 176     // D-10 525/60 NTSC 30mb/s
 177     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 178       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 179       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 180       mxf_write_cdci_desc },
 181     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 182       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 183       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 184       mxf_write_generic_sound_desc },
 185     // DV Unknown
 186     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
 187       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 188       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
 189       mxf_write_cdci_desc },
 190     // DV25 525/60
 191     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },
 192       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 193       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 194       mxf_write_cdci_desc },
 195     // DV25 625/50
 196     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },
 197       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 198       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },
 199       mxf_write_cdci_desc },
 200     // DV50 525/60
 201     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },
 202       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 203       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },
 204       mxf_write_cdci_desc },
 205     // DV50 625/50
 206     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },
 207       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 208       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },
 209       mxf_write_cdci_desc },
 210     // DV100 1080/60
 211     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },
 212       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 213       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },
 214       mxf_write_cdci_desc },
 215     // DV100 1080/50
 216     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },
 217       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 218       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },
 219       mxf_write_cdci_desc },
 220     // DV100 720/60
 221     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },
 222       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 223       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },
 224       mxf_write_cdci_desc },
 225     // DV100 720/50
 226     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },
 227       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 228       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },
 229       mxf_write_cdci_desc },
 230     // DNxHD 1080p 10bit high
 231     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 232       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 233       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
 234       mxf_write_cdci_desc },
 235     // DNxHD 1080p 8bit medium
 236     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 237       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 238       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },
 239       mxf_write_cdci_desc },
 240     // DNxHD 1080p 8bit high
 241     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 242       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 243       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },
 244       mxf_write_cdci_desc },
 245     // DNxHD 1080i 10bit high
 246     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 247       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 248       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },
 249       mxf_write_cdci_desc },
 250     // DNxHD 1080i 8bit medium
 251     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 252       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 253       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },
 254       mxf_write_cdci_desc },
 255     // DNxHD 1080i 8bit high
 256     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 257       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 258       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },
 259       mxf_write_cdci_desc },
 260     // DNxHD 720p 10bit
 261     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 262       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 263       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },
 264       mxf_write_cdci_desc },
 265     // DNxHD 720p 8bit high
 266     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 267       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 268       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },
 269       mxf_write_cdci_desc },
 270     // DNxHD 720p 8bit medium
 271     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 272       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 273       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },
 274       mxf_write_cdci_desc },
 275     // DNxHD 720p 8bit low
 276     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 277       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 278       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },
 279       mxf_write_cdci_desc },
 280     // JPEG2000
 281     { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 },
 282       { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01,0x15,0x01,0x08,0x00 },
 283       { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 },
 284       mxf_write_cdci_desc },
 285     // H.264
 286     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x0D,0x01,0x03,0x01,0x02,0x10,0x60,0x01 },
 287       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 288       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 289       mxf_write_mpegvideo_desc },
 290     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 291       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 292       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 293       NULL },
 294 };
 295
 296 typedef struct MXFContext {
 297     AVClass *av_class;
 298     int64_t footer_partition_offset;
 299     int essence_container_count;
 300     AVRational time_base;
 301     int header_written;
 302     MXFIndexEntry *index_entries;
 303     unsigned edit_units_count;
 304     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 305     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 306     int last_indexed_edit_unit;
 307     uint64_t *body_partition_offset;
 308     unsigned body_partitions_count;
 309     int last_key_index;  ///< index of last key frame
 310     uint64_t duration;
 311     AVTimecode tc;       ///< timecode context
 312     AVStream *timecode_track;
 313     int timecode_base;       ///< rounded time code base (25 or 30)
 314     int edit_unit_byte_count; ///< fixed edit unit byte count
 315     uint64_t body_offset;
 316     uint32_t instance_number;
 317     uint8_t umid[16];        ///< unique material identifier
 318     int channel_count;
 319     int signal_standard;
 320     uint32_t tagged_value_count;
 321     AVRational audio_edit_rate;
 322 } MXFContext;
 323
 324 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 325 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 326
 327 /**
 328  * complete key for operation pattern, partitions, and primer pack
 329  */
 330 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 331 static const uint8_t opatom_ul[]                   = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x02,0x01,0x10,0x03,0x00,0x00 };
 332 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 333 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 334 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 335 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 336 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
 337 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
 338 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 339 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 340
 341 /**
 342  * partial key for header metadata
 343  */
 344 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 345 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 346
 347 /**
 348  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 349  */
 350 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 351     // preface set
 352     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 353     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 354     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 355     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 356     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 357     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 358     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 359     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 360     // Identification
 361     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 362     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 363     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 364     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 365     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 366     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 367     // Content Storage
 368     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 369     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 370     // Essence Container Data
 371     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 372     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 373     // Package
 374     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 375     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 376     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 377     { 0x4402, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x03,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Package Name */
 378     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 379     { 0x4406, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0C,0x00,0x00,0x00}}, /* User Comments */
 380     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 381     // Track
 382     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 383     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 384     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 385     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 386     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 387     // Sequence
 388     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 389     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 390     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 391     // Source Clip
 392     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 393     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 394     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 395     // Timecode Component
 396     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 397     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 398     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 399     // Tagged Value
 400     { 0x5001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x09,0x01,0x00,0x00}}, /* Name */
 401     { 0x5003, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x02,0x01,0x02,0x0A,0x01,0x00,0x00}}, /* Value */
 402     // File Descriptor
 403     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 404     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 405     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 406     { 0x3002, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x02,0x00,0x00,0x00,0x00}}, /* ContainerDuration */
 407     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 408     // Generic Picture Essence Descriptor
 409     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 410     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 411     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 412     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 413     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 414     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 415     { 0x320B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0E,0x00,0x00,0x00}}, /* Presentation Y offset */
 416     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 417     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 418     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 419     { 0x3215, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x05,0x01,0x13,0x00,0x00,0x00,0x00}}, /* Signal Standard */
 420     // CDCI Picture Essence Descriptor
 421     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 422     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 423     { 0x3303, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x06,0x00,0x00,0x00}}, /* Color Siting */
 424     // Generic Sound Essence Descriptor
 425     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 426     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 427     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 428     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 429     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 430     // Index Table Segment
 431     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 432     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 433     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 434     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 435     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 436     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 437     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 438     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 439     // MPEG video Descriptor
 440     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 441     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 442     // Wave Audio Essence Descriptor
 443     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 444     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 445 };
 446
 447 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 448 {
 449     avio_write(pb, uuid_base, 12);
 450     avio_wb16(pb, type);
 451     avio_wb16(pb, value);
 452 }
 453
 454 static void mxf_write_umid(AVFormatContext *s, int type)
 455 {
 456     MXFContext *mxf = s->priv_data;
 457     avio_write(s->pb, umid_ul, 13);
 458     avio_wb24(s->pb, mxf->instance_number);
 459     avio_write(s->pb, mxf->umid, 15);
 460     avio_w8(s->pb, type);
 461 }
 462
 463 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 464 {
 465     avio_wb32(pb, ref_count);
 466     avio_wb32(pb, 16);
 467 }
 468
 469 static int klv_ber_length(uint64_t len)
 470 {
 471     if (len < 128)
 472         return 1;
 473     else
 474         return (av_log2(len) >> 3) + 2;
 475 }
 476
 477 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 478 {
 479     // Determine the best BER size
 480     int size;
 481     if (len < 128) {
 482         //short form
 483         avio_w8(pb, len);
 484         return 1;
 485     }
 486
 487     size = (av_log2(len) >> 3) + 1;
 488
 489     // long form
 490     avio_w8(pb, 0x80 + size);
 491     while(size) {
 492         size--;
 493         avio_w8(pb, len >> 8 * size & 0xff);
 494     }
 495     return 0;
 496 }
 497
 498 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 499 {
 500     avio_w8(pb, 0x80 + 3);
 501     avio_wb24(pb, len);
 502 }
 503
 504 static void klv_encode_ber9_length(AVIOContext *pb, uint64_t len)
 505 {
 506     avio_w8(pb, 0x80 + 8);
 507     avio_wb64(pb, len);
 508 }
 509
 510 /*
 511  * Get essence container ul index
 512  */
 513 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 514 {
 515     int i;
 516     for (i = 0; mxf_essence_mappings[i].id; i++)
 517         if (mxf_essence_mappings[i].id == id)
 518             return mxf_essence_mappings[i].index;
 519     return -1;
 520 }
 521
 522 static void mxf_write_primer_pack(AVFormatContext *s)
 523 {
 524     AVIOContext *pb = s->pb;
 525     int local_tag_number, i = 0;
 526
 527     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 528
 529     avio_write(pb, primer_pack_key, 16);
 530     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 531
 532     avio_wb32(pb, local_tag_number); // local_tag num
 533     avio_wb32(pb, 18); // item size, always 18 according to the specs
 534
 535     for (i = 0; i < local_tag_number; i++) {
 536         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 537         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 538     }
 539 }
 540
 541 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
 542 {
 543     avio_wb16(pb, tag);
 544     avio_wb16(pb, size);
 545 }
 546
 547 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 548 {
 549     avio_write(pb, header_metadata_key, 13);
 550     avio_wb24(pb, value);
 551 }
 552
 553 static void mxf_free(AVFormatContext *s)
 554 {
 555     int i;
 556
 557     for (i = 0; i < s->nb_streams; i++) {
 558         AVStream *st = s->streams[i];
 559         av_freep(&st->priv_data);
 560     }
 561 }
 562
 563 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 564 {
 565     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 566     while (uls->uid[0]) {
 567         if (type == uls->id)
 568             break;
 569         uls++;
 570     }
 571     return uls;
 572 }
 573
 574 //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors
 575 #define DESCRIPTOR_COUNT(essence_container_count) \
 576     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)
 577
 578 static void mxf_write_essence_container_refs(AVFormatContext *s)
 579 {
 580     MXFContext *c = s->priv_data;
 581     AVIOContext *pb = s->pb;
 582     int i;
 583
 584     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));
 585     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 586     for (i = 0; i < c->essence_container_count; i++) {
 587         MXFStreamContext *sc = s->streams[i]->priv_data;
 588         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 589     }
 590
 591     if (c->essence_container_count > 1)
 592         avio_write(pb, multiple_desc_ul, 16);
 593 }
 594
 595 static void mxf_write_preface(AVFormatContext *s)
 596 {
 597     MXFContext *mxf = s->priv_data;
 598     AVIOContext *pb = s->pb;
 599
 600     mxf_write_metadata_key(pb, 0x012f00);
 601     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 602     klv_encode_ber_length(pb, 130 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 603
 604     // write preface set uid
 605     mxf_write_local_tag(pb, 16, 0x3C0A);
 606     mxf_write_uuid(pb, Preface, 0);
 607     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 608
 609     // last modified date
 610     mxf_write_local_tag(pb, 8, 0x3B02);
 611     avio_wb64(pb, mxf->timestamp);
 612
 613     // write version
 614     mxf_write_local_tag(pb, 2, 0x3B05);
 615     avio_wb16(pb, 258); // v1.2
 616
 617     // write identification_refs
 618     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 619     mxf_write_refs_count(pb, 1);
 620     mxf_write_uuid(pb, Identification, 0);
 621
 622     // write content_storage_refs
 623     mxf_write_local_tag(pb, 16, 0x3B03);
 624     mxf_write_uuid(pb, ContentStorage, 0);
 625
 626     // operational pattern
 627     mxf_write_local_tag(pb, 16, 0x3B09);
 628     if (s->oformat == &ff_mxf_opatom_muxer)
 629         avio_write(pb, opatom_ul, 16);
 630     else
 631         avio_write(pb, op1a_ul, 16);
 632
 633     // write essence_container_refs
 634     mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);
 635     mxf_write_essence_container_refs(s);
 636
 637     // write dm_scheme_refs
 638     mxf_write_local_tag(pb, 8, 0x3B0B);
 639     avio_wb64(pb, 0);
 640 }
 641
 642 /*
 643  * Returns the length of the UTF-16 string, in 16-bit characters, that would result
 644  * from decoding the utf-8 string.
 645  */
 646 static uint64_t mxf_utf16len(const char *utf8_str)
 647 {
 648     const uint8_t *q = utf8_str;
 649     uint64_t size = 0;
 650     while (*q) {
 651         uint32_t ch;
 652         GET_UTF8(ch, *q++, goto invalid;)
 653         if (ch < 0x10000)
 654             size++;
 655         else
 656             size += 2;
 657         continue;
 658 invalid:
 659         av_log(NULL, AV_LOG_ERROR, "Invaid UTF8 sequence in mxf_utf16len\n\n");
 660     }
 661     size += 1;
 662     return size;
 663 }
 664
 665 /*
 666  * Returns the calculated length a local tag containing an utf-8 string as utf-16
 667  */
 668 static int mxf_utf16_local_tag_length(const char *utf8_str)
 669 {
 670     uint64_t size;
 671
 672     if (!utf8_str)
 673         return 0;
 674
 675     size = mxf_utf16len(utf8_str);
 676     if (size >= UINT16_MAX/2) {
 677         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 678         return 0;
 679     }
 680
 681     return 4 + size * 2;
 682 }
 683
 684 /*
 685  * Write a local tag containing an utf-8 string as utf-16
 686  */
 687 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
 688 {
 689     uint64_t size = mxf_utf16len(value);
 690
 691     if (size >= UINT16_MAX/2) {
 692         av_log(NULL, AV_LOG_ERROR, "utf16 local tag size %"PRIx64" invalid (too large), ignoring\n", size);
 693         return;
 694     }
 695
 696     mxf_write_local_tag(pb, size*2, tag);
 697     avio_put_str16be(pb, value);
 698 }
 699
 700 static void mxf_write_identification(AVFormatContext *s)
 701 {
 702     MXFContext *mxf = s->priv_data;
 703     AVIOContext *pb = s->pb;
 704     const char *company = "FFmpeg";
 705     const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
 706     const char *version;
 707     int length;
 708
 709     mxf_write_metadata_key(pb, 0x013000);
 710     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 711
 712     version = s->flags & AVFMT_FLAG_BITEXACT ?
 713         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 714     length = 72 + mxf_utf16_local_tag_length(company) +
 715                   mxf_utf16_local_tag_length(product) +
 716                   mxf_utf16_local_tag_length(version);
 717     klv_encode_ber_length(pb, length);
 718
 719     // write uid
 720     mxf_write_local_tag(pb, 16, 0x3C0A);
 721     mxf_write_uuid(pb, Identification, 0);
 722     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 723
 724     // write generation uid
 725     mxf_write_local_tag(pb, 16, 0x3C09);
 726     mxf_write_uuid(pb, Identification, 1);
 727     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 728     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 729     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 730
 731     // write product uid
 732     mxf_write_local_tag(pb, 16, 0x3C05);
 733     mxf_write_uuid(pb, Identification, 2);
 734
 735     // modification date
 736     mxf_write_local_tag(pb, 8, 0x3C06);
 737     avio_wb64(pb, mxf->timestamp);
 738 }
 739
 740 static void mxf_write_content_storage(AVFormatContext *s)
 741 {
 742     AVIOContext *pb = s->pb;
 743
 744     mxf_write_metadata_key(pb, 0x011800);
 745     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 746     klv_encode_ber_length(pb, 92);
 747
 748     // write uid
 749     mxf_write_local_tag(pb, 16, 0x3C0A);
 750     mxf_write_uuid(pb, ContentStorage, 0);
 751     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 752
 753     // write package reference
 754     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 755     mxf_write_refs_count(pb, 2);
 756     mxf_write_uuid(pb, MaterialPackage, 0);
 757     mxf_write_uuid(pb, SourcePackage, 0);
 758
 759     // write essence container data
 760     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 761     mxf_write_refs_count(pb, 1);
 762     mxf_write_uuid(pb, EssenceContainerData, 0);
 763 }
 764
 765 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 766 {
 767     MXFContext *mxf = s->priv_data;
 768     AVIOContext *pb = s->pb;
 769     MXFStreamContext *sc = st->priv_data;
 770
 771     mxf_write_metadata_key(pb, 0x013b00);
 772     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 773     klv_encode_ber_length(pb, 80);
 774
 775     // write track uid
 776     mxf_write_local_tag(pb, 16, 0x3C0A);
 777     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 778     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 779
 780     // write track id
 781     mxf_write_local_tag(pb, 4, 0x4801);
 782     avio_wb32(pb, st->index+2);
 783
 784     // write track number
 785     mxf_write_local_tag(pb, 4, 0x4804);
 786     if (type == MaterialPackage)
 787         avio_wb32(pb, 0); // track number of material package is 0
 788     else
 789         avio_write(pb, sc->track_essence_element_key + 12, 4);
 790
 791     mxf_write_local_tag(pb, 8, 0x4B01);
 792
 793     if (st == mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer){
 794         avio_wb32(pb, mxf->tc.rate.num);
 795         avio_wb32(pb, mxf->tc.rate.den);
 796     } else {
 797         avio_wb32(pb, mxf->time_base.den);
 798         avio_wb32(pb, mxf->time_base.num);
 799     }
 800
 801     // write origin
 802     mxf_write_local_tag(pb, 8, 0x4B02);
 803     avio_wb64(pb, 0);
 804
 805     // write sequence refs
 806     mxf_write_local_tag(pb, 16, 0x4803);
 807     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 808 }
 809
 810 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 };
 811
 812 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 813 {
 814     MXFContext *mxf = s->priv_data;
 815     AVIOContext *pb = s->pb;
 816
 817     // find data define uls
 818     mxf_write_local_tag(pb, 16, 0x0201);
 819     if (st == mxf->timecode_track)
 820         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 821     else {
 822         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 823         avio_write(pb, data_def_ul->uid, 16);
 824     }
 825
 826     // write duration
 827     mxf_write_local_tag(pb, 8, 0x0202);
 828
 829     if (st != mxf->timecode_track && s->oformat == &ff_mxf_opatom_muxer && st->codec->codec_type == AVMEDIA_TYPE_AUDIO){
 830         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
 831     } else {
 832         avio_wb64(pb, mxf->duration);
 833     }
 834 }
 835
 836 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 837 {
 838     MXFContext *mxf = s->priv_data;
 839     AVIOContext *pb = s->pb;
 840     enum MXFMetadataSetType component;
 841
 842     mxf_write_metadata_key(pb, 0x010f00);
 843     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 844     klv_encode_ber_length(pb, 80);
 845
 846     mxf_write_local_tag(pb, 16, 0x3C0A);
 847     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 848
 849     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 850     mxf_write_common_fields(s, st);
 851
 852     // write structural component
 853     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 854     mxf_write_refs_count(pb, 1);
 855     if (st == mxf->timecode_track)
 856         component = TimecodeComponent;
 857     else
 858         component = SourceClip;
 859     if (type == SourcePackage)
 860         component += TypeBottom;
 861     mxf_write_uuid(pb, component, st->index);
 862 }
 863
 864 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 865 {
 866     MXFContext *mxf = s->priv_data;
 867     AVIOContext *pb = s->pb;
 868
 869     mxf_write_metadata_key(pb, 0x011400);
 870     klv_encode_ber_length(pb, 75);
 871
 872     // UID
 873     mxf_write_local_tag(pb, 16, 0x3C0A);
 874     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
 875                    TimecodeComponent + TypeBottom, st->index);
 876
 877     mxf_write_common_fields(s, st);
 878
 879     // Start Time Code
 880     mxf_write_local_tag(pb, 8, 0x1501);
 881     avio_wb64(pb, mxf->tc.start);
 882
 883     // Rounded Time Code Base
 884     mxf_write_local_tag(pb, 2, 0x1502);
 885     avio_wb16(pb, mxf->timecode_base);
 886
 887     // Drop Frame
 888     mxf_write_local_tag(pb, 1, 0x1503);
 889     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 890 }
 891
 892 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 893 {
 894     AVIOContext *pb = s->pb;
 895     int i;
 896
 897     mxf_write_metadata_key(pb, 0x011100);
 898     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 899     klv_encode_ber_length(pb, 108);
 900
 901     // write uid
 902     mxf_write_local_tag(pb, 16, 0x3C0A);
 903     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 904
 905     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 906     mxf_write_common_fields(s, st);
 907
 908     // write start_position
 909     mxf_write_local_tag(pb, 8, 0x1201);
 910     avio_wb64(pb, 0);
 911
 912     // write source package uid, end of the reference
 913     mxf_write_local_tag(pb, 32, 0x1101);
 914     if (type == SourcePackage) {
 915         for (i = 0; i < 4; i++)
 916             avio_wb64(pb, 0);
 917     } else
 918         mxf_write_umid(s, 1);
 919
 920     // write source track id
 921     mxf_write_local_tag(pb, 4, 0x1102);
 922     if (type == SourcePackage)
 923         avio_wb32(pb, 0);
 924     else
 925         avio_wb32(pb, st->index+2);
 926 }
 927
 928 static void mxf_write_multi_descriptor(AVFormatContext *s)
 929 {
 930     MXFContext *mxf = s->priv_data;
 931     AVIOContext *pb = s->pb;
 932     const uint8_t *ul;
 933     int i;
 934
 935     mxf_write_metadata_key(pb, 0x014400);
 936     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 937     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
 938
 939     mxf_write_local_tag(pb, 16, 0x3C0A);
 940     mxf_write_uuid(pb, MultipleDescriptor, 0);
 941     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 942
 943     // write sample rate
 944     mxf_write_local_tag(pb, 8, 0x3001);
 945     avio_wb32(pb, mxf->time_base.den);
 946     avio_wb32(pb, mxf->time_base.num);
 947
 948     // write essence container ul
 949     mxf_write_local_tag(pb, 16, 0x3004);
 950     if (mxf->essence_container_count > 1)
 951         ul = multiple_desc_ul;
 952     else {
 953         MXFStreamContext *sc = s->streams[0]->priv_data;
 954         ul = mxf_essence_container_uls[sc->index].container_ul;
 955     }
 956     avio_write(pb, ul, 16);
 957
 958     // write sub descriptor refs
 959     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 960     mxf_write_refs_count(pb, s->nb_streams);
 961     for (i = 0; i < s->nb_streams; i++)
 962         mxf_write_uuid(pb, SubDescriptor, i);
 963 }
 964
 965 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 966 {
 967     MXFContext *mxf = s->priv_data;
 968     MXFStreamContext *sc = st->priv_data;
 969     AVIOContext *pb = s->pb;
 970
 971     avio_write(pb, key, 16);
 972     klv_encode_ber4_length(pb, size+20+8+12+20);
 973
 974     mxf_write_local_tag(pb, 16, 0x3C0A);
 975     mxf_write_uuid(pb, SubDescriptor, st->index);
 976
 977     mxf_write_local_tag(pb, 4, 0x3006);
 978     avio_wb32(pb, st->index+2);
 979
 980     mxf_write_local_tag(pb, 8, 0x3001);
 981     avio_wb32(pb, mxf->time_base.den);
 982     avio_wb32(pb, mxf->time_base.num);
 983
 984     mxf_write_local_tag(pb, 16, 0x3004);
 985     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 986 }
 987
 988 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
 989 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
 990 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
 991 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
 992 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
 993
 994 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 995 {
 996     MXFStreamContext *sc = st->priv_data;
 997     AVIOContext *pb = s->pb;
 998     int stored_height = (st->codec->height+15)/16*16;
 999     int display_height;
1000     int f1, f2;
1001     unsigned desc_size = size+8+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20+5;
1002     if (sc->interlaced && sc->field_dominance)
1003         desc_size += 5;
1004     if (sc->signal_standard)
1005         desc_size += 5;
1006
1007     mxf_write_generic_desc(s, st, key, desc_size);
1008
1009     mxf_write_local_tag(pb, 4, 0x3203);
1010     avio_wb32(pb, st->codec->width);
1011
1012     mxf_write_local_tag(pb, 4, 0x3202);
1013     avio_wb32(pb, stored_height>>sc->interlaced);
1014
1015     mxf_write_local_tag(pb, 4, 0x3209);
1016     avio_wb32(pb, st->codec->width);
1017
1018     if (st->codec->height == 608) // PAL + VBI
1019         display_height = 576;
1020     else if (st->codec->height == 512)  // NTSC + VBI
1021         display_height = 486;
1022     else
1023         display_height = st->codec->height;
1024
1025     mxf_write_local_tag(pb, 4, 0x3208);
1026     avio_wb32(pb, display_height>>sc->interlaced);
1027
1028     // presentation Y offset
1029     mxf_write_local_tag(pb, 4, 0x320B);
1030     avio_wb32(pb, (st->codec->height - display_height)>>sc->interlaced);
1031
1032     // component depth
1033     mxf_write_local_tag(pb, 4, 0x3301);
1034     avio_wb32(pb, sc->component_depth);
1035
1036     // horizontal subsampling
1037     mxf_write_local_tag(pb, 4, 0x3302);
1038     avio_wb32(pb, sc->h_chroma_sub_sample);
1039
1040     // color siting
1041     mxf_write_local_tag(pb, 1, 0x3303);
1042     avio_w8(pb, sc->color_siting);
1043
1044     if (sc->signal_standard) {
1045         mxf_write_local_tag(pb, 1, 0x3215);
1046         avio_w8(pb, sc->signal_standard);
1047     }
1048
1049     // frame layout
1050     mxf_write_local_tag(pb, 1, 0x320C);
1051     avio_w8(pb, sc->interlaced);
1052
1053     // video line map
1054     switch (st->codec->height) {
1055     case  576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
1056     case  608: f1 =  7; f2 = 320; break;
1057     case  480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
1058     case  512: f1 =  7; f2 = 270; break;
1059     case  720: f1 = 26; f2 =   0; break; // progressive
1060     case 1080: f1 = 21; f2 = 584; break;
1061     default:   f1 =  0; f2 =   0; break;
1062     }
1063
1064     if (!sc->interlaced) {
1065         f2  = 0;
1066         f1 *= 2;
1067     }
1068
1069     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
1070     avio_wb32(pb, sc->interlaced ? 2 : 1);
1071     avio_wb32(pb, 4);
1072     avio_wb32(pb, f1);
1073     if (sc->interlaced)
1074         avio_wb32(pb, f2);
1075
1076     mxf_write_local_tag(pb, 8, 0x320E);
1077     avio_wb32(pb, sc->aspect_ratio.num);
1078     avio_wb32(pb, sc->aspect_ratio.den);
1079
1080     mxf_write_local_tag(pb, 16, 0x3201);
1081     avio_write(pb, *sc->codec_ul, 16);
1082
1083     if (sc->interlaced && sc->field_dominance) {
1084         mxf_write_local_tag(pb, 1, 0x3212);
1085         avio_w8(pb, sc->field_dominance);
1086     }
1087
1088 }
1089
1090 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
1091 {
1092     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
1093 }
1094
1095 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
1096 {
1097     AVIOContext *pb = s->pb;
1098     MXFStreamContext *sc = st->priv_data;
1099     int profile_and_level = (st->codec->profile<<4) | st->codec->level;
1100
1101     if (st->codec->codec_id != AV_CODEC_ID_H264) {
1102         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
1103
1104         // bit rate
1105         mxf_write_local_tag(pb, 4, 0x8000);
1106         avio_wb32(pb, sc->video_bit_rate);
1107
1108         // profile and level
1109         mxf_write_local_tag(pb, 1, 0x8007);
1110         if (!st->codec->profile)
1111             profile_and_level |= 0x80; // escape bit
1112         avio_w8(pb, profile_and_level);
1113     } else {
1114         mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 0);
1115     }
1116 }
1117
1118 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1119 {
1120     AVIOContext *pb = s->pb;
1121     MXFContext *mxf = s->priv_data;
1122     int show_warnings = !mxf->footer_partition_offset;
1123     int duration_size = 0;
1124
1125     if (s->oformat == &ff_mxf_opatom_muxer)
1126         duration_size = 12;
1127
1128     mxf_write_generic_desc(s, st, key, size+duration_size+5+12+8+8);
1129
1130     if (duration_size > 0){
1131         mxf_write_local_tag(pb, 8, 0x3002);
1132         avio_wb64(pb, mxf->body_offset / mxf->edit_unit_byte_count);
1133     }
1134
1135     // audio locked
1136     mxf_write_local_tag(pb, 1, 0x3D02);
1137     avio_w8(pb, 1);
1138
1139     // write audio sampling rate
1140     mxf_write_local_tag(pb, 8, 0x3D03);
1141     avio_wb32(pb, st->codec->sample_rate);
1142     avio_wb32(pb, 1);
1143
1144     mxf_write_local_tag(pb, 4, 0x3D07);
1145     if (mxf->channel_count == -1) {
1146         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))
1147             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");
1148         avio_wb32(pb, st->codec->channels);
1149     } else if (s->oformat == &ff_mxf_d10_muxer) {
1150         if (show_warnings && (mxf->channel_count < st->codec->channels))
1151             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1152         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1153             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");
1154         avio_wb32(pb, mxf->channel_count);
1155     } else {
1156         if (show_warnings && mxf->channel_count != -1 && s->oformat != &ff_mxf_opatom_muxer)
1157             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");
1158         avio_wb32(pb, st->codec->channels);
1159     }
1160
1161     mxf_write_local_tag(pb, 4, 0x3D01);
1162     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));
1163 }
1164
1165 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1166 {
1167     AVIOContext *pb = s->pb;
1168
1169     mxf_write_generic_sound_common(s, st, key, size+6+8);
1170
1171     mxf_write_local_tag(pb, 2, 0x3D0A);
1172     avio_wb16(pb, st->codec->block_align);
1173
1174     // avg bytes per sec
1175     mxf_write_local_tag(pb, 4, 0x3D09);
1176     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);
1177 }
1178
1179 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1180 {
1181     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
1182 }
1183
1184 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1185 {
1186     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
1187 }
1188
1189 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1190 {
1191     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
1192 }
1193
1194 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 };
1195
1196 static int mxf_write_tagged_value(AVFormatContext *s, const char* name, const char* value)
1197 {
1198     MXFContext *mxf = s->priv_data;
1199     AVIOContext *pb = s->pb;
1200     int name_size = mxf_utf16_local_tag_length(name);
1201     int indirect_value_size = 13 + mxf_utf16_local_tag_length(value);
1202
1203     if (!name_size || indirect_value_size == 13)
1204         return 1;
1205
1206     mxf_write_metadata_key(pb, 0x013f00);
1207     klv_encode_ber_length(pb, 24 + name_size + indirect_value_size);
1208
1209     // write instance UID
1210     mxf_write_local_tag(pb, 16, 0x3C0A);
1211     mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count);
1212
1213     // write name
1214     mxf_write_local_tag_utf16(pb, 0x5001, name); // Name
1215
1216     // write indirect value
1217     mxf_write_local_tag(pb, indirect_value_size, 0x5003);
1218     avio_write(pb, mxf_indirect_value_utf16le, 17);
1219     avio_put_str16le(pb, value);
1220
1221     mxf->tagged_value_count++;
1222     return 0;
1223 }
1224
1225 static int mxf_write_user_comments(AVFormatContext *s, const AVDictionary *m)
1226 {
1227     MXFContext *mxf = s->priv_data;
1228     AVDictionaryEntry *t = NULL;
1229     int count = 0;
1230
1231     while ((t = av_dict_get(m, "comment_", t, AV_DICT_IGNORE_SUFFIX))) {
1232         if (mxf->tagged_value_count >= UINT16_MAX) {
1233             av_log(s, AV_LOG_ERROR, "too many tagged values, ignoring remaining\n");
1234             return count;
1235         }
1236
1237         if (mxf_write_tagged_value(s, t->key + 8, t->value) == 0)
1238             count++;
1239     }
1240     return count;
1241 }
1242
1243 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type, const char *package_name)
1244 {
1245     MXFContext *mxf = s->priv_data;
1246     AVIOContext *pb = s->pb;
1247     int i, track_count = s->nb_streams+1;
1248     int name_size = mxf_utf16_local_tag_length(package_name);
1249     int user_comment_count = 0;
1250
1251     if (type == MaterialPackage) {
1252         user_comment_count = mxf_write_user_comments(s, s->metadata);
1253         mxf_write_metadata_key(pb, 0x013600);
1254         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1255         klv_encode_ber_length(pb, 104 + name_size + (16*track_count) + (16*user_comment_count));
1256     } else {
1257         mxf_write_metadata_key(pb, 0x013700);
1258         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1259         klv_encode_ber_length(pb, 124 + name_size + (16*track_count)); // 20 bytes length for descriptor reference
1260     }
1261
1262     // write uid
1263     mxf_write_local_tag(pb, 16, 0x3C0A);
1264     mxf_write_uuid(pb, type, 0);
1265     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
1266     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1267
1268     // write package umid
1269     mxf_write_local_tag(pb, 32, 0x4401);
1270     mxf_write_umid(s, type == SourcePackage);
1271     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1272
1273     // package name
1274     if (name_size)
1275         mxf_write_local_tag_utf16(pb, 0x4402, package_name);
1276
1277     // package creation date
1278     mxf_write_local_tag(pb, 8, 0x4405);
1279     avio_wb64(pb, mxf->timestamp);
1280
1281     // package modified date
1282     mxf_write_local_tag(pb, 8, 0x4404);
1283     avio_wb64(pb, mxf->timestamp);
1284
1285     // write track refs
1286     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
1287     mxf_write_refs_count(pb, track_count);
1288     mxf_write_uuid(pb, type == MaterialPackage ? Track :
1289                    Track + TypeBottom, -1); // timecode track
1290     for (i = 0; i < s->nb_streams; i++)
1291         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
1292
1293     // write user comment refs
1294     mxf_write_local_tag(pb, user_comment_count*16 + 8, 0x4406);
1295     mxf_write_refs_count(pb, user_comment_count);
1296     for (i = 0; i < user_comment_count; i++)
1297          mxf_write_uuid(pb, TaggedValue, mxf->tagged_value_count - user_comment_count + i);
1298
1299     // write multiple descriptor reference
1300     if (type == SourcePackage) {
1301         mxf_write_local_tag(pb, 16, 0x4701);
1302         if (s->nb_streams > 1) {
1303             mxf_write_uuid(pb, MultipleDescriptor, 0);
1304             mxf_write_multi_descriptor(s);
1305         } else
1306             mxf_write_uuid(pb, SubDescriptor, 0);
1307     }
1308
1309     // write timecode track
1310     mxf_write_track(s, mxf->timecode_track, type);
1311     mxf_write_sequence(s, mxf->timecode_track, type);
1312     mxf_write_timecode_component(s, mxf->timecode_track, type);
1313
1314     for (i = 0; i < s->nb_streams; i++) {
1315         AVStream *st = s->streams[i];
1316         mxf_write_track(s, st, type);
1317         mxf_write_sequence(s, st, type);
1318         mxf_write_structural_component(s, st, type);
1319
1320         if (type == SourcePackage) {
1321             MXFStreamContext *sc = st->priv_data;
1322             mxf_essence_container_uls[sc->index].write_desc(s, st);
1323         }
1324     }
1325 }
1326
1327 static int mxf_write_essence_container_data(AVFormatContext *s)
1328 {
1329     AVIOContext *pb = s->pb;
1330
1331     mxf_write_metadata_key(pb, 0x012300);
1332     klv_encode_ber_length(pb, 72);
1333
1334     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1335     mxf_write_uuid(pb, EssenceContainerData, 0);
1336
1337     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1338     mxf_write_umid(s, 1);
1339
1340     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1341     avio_wb32(pb, 1);
1342
1343     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1344     avio_wb32(pb, 2);
1345
1346     return 0;
1347 }
1348
1349 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1350 {
1351     const char *material_package_name = NULL;
1352     const char *file_package_name = NULL;
1353     AVDictionaryEntry *entry = NULL;
1354     AVStream *st = NULL;
1355     int i;
1356
1357     if (entry = av_dict_get(s->metadata, "material_package_name", NULL, 0))
1358        material_package_name = entry->value;
1359
1360     if (entry = av_dict_get(s->metadata, "file_package_name", NULL, 0)) {
1361         file_package_name = entry->value;
1362     } else {
1363         /* check if any of the streams contain a file_package_name */
1364         for (i = 0; i < s->nb_streams; i++) {
1365             st = s->streams[i];
1366             if (entry = av_dict_get(st->metadata, "file_package_name", NULL, 0)) {
1367                 file_package_name = entry->value;
1368                 break;
1369             }
1370         }
1371     }
1372
1373     mxf_write_preface(s);
1374     mxf_write_identification(s);
1375     mxf_write_content_storage(s);
1376     mxf_write_package(s, MaterialPackage, material_package_name);
1377     mxf_write_package(s, SourcePackage, file_package_name);
1378     mxf_write_essence_container_data(s);
1379     return 0;
1380 }
1381
1382 static unsigned klv_fill_size(uint64_t size)
1383 {
1384     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1385     if (pad < 20) // smallest fill item possible
1386         return pad + KAG_SIZE;
1387     else
1388         return pad & (KAG_SIZE-1);
1389 }
1390
1391 static void mxf_write_index_table_segment(AVFormatContext *s)
1392 {
1393     MXFContext *mxf = s->priv_data;
1394     AVIOContext *pb = s->pb;
1395     int i, j, temporal_reordering = 0;
1396     int key_index = mxf->last_key_index;
1397
1398     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1399
1400     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1401         return;
1402
1403     avio_write(pb, index_table_segment_key, 16);
1404
1405     if (mxf->edit_unit_byte_count) {
1406         klv_encode_ber_length(pb, 80);
1407     } else {
1408         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +
1409                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));
1410     }
1411
1412     // instance id
1413     mxf_write_local_tag(pb, 16, 0x3C0A);
1414     mxf_write_uuid(pb, IndexTableSegment, 0);
1415
1416     // index edit rate
1417     mxf_write_local_tag(pb, 8, 0x3F0B);
1418     avio_wb32(pb, mxf->time_base.den);
1419     avio_wb32(pb, mxf->time_base.num);
1420
1421     // index start position
1422     mxf_write_local_tag(pb, 8, 0x3F0C);
1423     avio_wb64(pb, mxf->last_indexed_edit_unit);
1424
1425     // index duration
1426     mxf_write_local_tag(pb, 8, 0x3F0D);
1427     if (mxf->edit_unit_byte_count)
1428         avio_wb64(pb, 0); // index table covers whole container
1429     else
1430         avio_wb64(pb, mxf->edit_units_count);
1431
1432     // edit unit byte count
1433     mxf_write_local_tag(pb, 4, 0x3F05);
1434     avio_wb32(pb, mxf->edit_unit_byte_count);
1435
1436     // index sid
1437     mxf_write_local_tag(pb, 4, 0x3F06);
1438     avio_wb32(pb, 2);
1439
1440     // body sid
1441     mxf_write_local_tag(pb, 4, 0x3F07);
1442     avio_wb32(pb, 1);
1443
1444     if (!mxf->edit_unit_byte_count) {
1445         // real slice count - 1
1446         mxf_write_local_tag(pb, 1, 0x3F08);
1447         avio_w8(pb, mxf->slice_count);
1448
1449         // delta entry array
1450         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1451         avio_wb32(pb, s->nb_streams+1); // num of entries
1452         avio_wb32(pb, 6);               // size of one entry
1453         // write system item delta entry
1454         avio_w8(pb, 0);
1455         avio_w8(pb, 0); // slice entry
1456         avio_wb32(pb, 0); // element delta
1457         for (i = 0; i < s->nb_streams; i++) {
1458             AVStream *st = s->streams[i];
1459             MXFStreamContext *sc = st->priv_data;
1460             avio_w8(pb, sc->temporal_reordering);
1461             if (sc->temporal_reordering)
1462                 temporal_reordering = 1;
1463             if (i == 0) { // video track
1464                 avio_w8(pb, 0); // slice number
1465                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1466             } else { // audio track
1467                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1468                 audio_frame_size += klv_fill_size(audio_frame_size);
1469                 avio_w8(pb, 1);
1470                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1471             }
1472         }
1473
1474         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1475         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1476         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
1477
1478         for (i = 0; i < mxf->edit_units_count; i++) {
1479             int temporal_offset = 0;
1480
1481             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1482                 mxf->last_key_index = key_index;
1483                 key_index = i;
1484             }
1485
1486             if (temporal_reordering) {
1487                 int pic_num_in_gop = i - key_index;
1488                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1489                     for (j = key_index; j < mxf->edit_units_count; j++) {
1490                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1491                             break;
1492                     }
1493                     if (j == mxf->edit_units_count)
1494                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1495                     temporal_offset = j - key_index - pic_num_in_gop;
1496                 }
1497             }
1498             avio_w8(pb, temporal_offset);
1499
1500             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1501                 avio_w8(pb, mxf->last_key_index - i);
1502             } else {
1503                 avio_w8(pb, key_index - i); // key frame offset
1504                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1505                     mxf->last_key_index = key_index;
1506             }
1507
1508             if (!(mxf->index_entries[i].flags & 0x33) && // I frame
1509                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1510                 mxf->index_entries[i].flags |= 0x80; // random access
1511             avio_w8(pb, mxf->index_entries[i].flags);
1512             // stream offset
1513             avio_wb64(pb, mxf->index_entries[i].offset);
1514             if (s->nb_streams > 1)
1515                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1516         }
1517
1518         mxf->last_key_index = key_index - mxf->edit_units_count;
1519         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1520         mxf->edit_units_count = 0;
1521     }
1522 }
1523
1524 static void mxf_write_klv_fill(AVFormatContext *s)
1525 {
1526     unsigned pad = klv_fill_size(avio_tell(s->pb));
1527     if (pad) {
1528         avio_write(s->pb, klv_fill_key, 16);
1529         pad -= 16 + 4;
1530         klv_encode_ber4_length(s->pb, pad);
1531         ffio_fill(s->pb, 0, pad);
1532         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1533     }
1534 }
1535
1536 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1537                                 int indexsid,
1538                                 const uint8_t *key, int write_metadata)
1539 {
1540     MXFContext *mxf = s->priv_data;
1541     AVIOContext *pb = s->pb;
1542     int64_t header_byte_count_offset;
1543     unsigned index_byte_count = 0;
1544     uint64_t partition_offset = avio_tell(pb);
1545     int err;
1546
1547     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1548         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1549             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1550     else if (mxf->edit_unit_byte_count && indexsid)
1551         index_byte_count = 80;
1552
1553     if (index_byte_count) {
1554         // add encoded ber length
1555         index_byte_count += 16 + klv_ber_length(index_byte_count);
1556         index_byte_count += klv_fill_size(index_byte_count);
1557     }
1558
1559     if (key && !memcmp(key, body_partition_key, 16)) {
1560         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1561                                      sizeof(*mxf->body_partition_offset))) < 0) {
1562             mxf->body_partitions_count = 0;
1563             return err;
1564         }
1565         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1566     }
1567
1568     // write klv
1569     if (key)
1570         avio_write(pb, key, 16);
1571     else
1572         avio_write(pb, body_partition_key, 16);
1573
1574     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1575
1576     // write partition value
1577     avio_wb16(pb, 1); // majorVersion
1578     avio_wb16(pb, 2); // minorVersion
1579     avio_wb32(pb, KAG_SIZE); // KAGSize
1580
1581     avio_wb64(pb, partition_offset); // ThisPartition
1582
1583     if (key && !memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1584         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1585     else if (key && !memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1586         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1587     else
1588         avio_wb64(pb, 0);
1589
1590     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1591
1592     // set offset
1593     header_byte_count_offset = avio_tell(pb);
1594     avio_wb64(pb, 0); // headerByteCount, update later
1595
1596     // indexTable
1597     avio_wb64(pb, index_byte_count); // indexByteCount
1598     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1599
1600     // BodyOffset
1601     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count && s->oformat != &ff_mxf_opatom_muxer)
1602         avio_wb64(pb, mxf->body_offset);
1603     else
1604         avio_wb64(pb, 0);
1605
1606     avio_wb32(pb, bodysid); // bodySID
1607
1608     // operational pattern
1609     if (s->oformat == &ff_mxf_opatom_muxer)
1610         avio_write(pb, opatom_ul, 16);
1611     else
1612         avio_write(pb, op1a_ul, 16);
1613
1614     // essence container
1615     mxf_write_essence_container_refs(s);
1616
1617     if (write_metadata) {
1618         // mark the start of the headermetadata and calculate metadata size
1619         int64_t pos, start;
1620         unsigned header_byte_count;
1621
1622         mxf_write_klv_fill(s);
1623         start = avio_tell(s->pb);
1624         mxf_write_primer_pack(s);
1625         mxf_write_header_metadata_sets(s);
1626         pos = avio_tell(s->pb);
1627         header_byte_count = pos - start + klv_fill_size(pos);
1628
1629         // update header_byte_count
1630         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1631         avio_wb64(pb, header_byte_count);
1632         avio_seek(pb, pos, SEEK_SET);
1633     }
1634
1635     if(key)
1636         avio_flush(pb);
1637
1638     return 0;
1639 }
1640
1641 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,
1642 AVPacket *pkt)
1643 {
1644     MXFContext *mxf = s->priv_data;
1645     MXFStreamContext *sc = st->priv_data;
1646     int i, cid;
1647     uint8_t* header_cid;
1648     int frame_size = 0;
1649
1650     if (mxf->header_written)
1651         return 1;
1652
1653     if (pkt->size < 43)
1654         return -1;
1655
1656     header_cid = pkt->data + 0x28;
1657     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];
1658
1659     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)
1660         return -1;
1661     if ((sc->interlaced = avpriv_dnxhd_get_interlaced(cid)) < 0)
1662         return AVERROR_INVALIDDATA;
1663
1664     switch (cid) {
1665     case 1235:
1666         sc->index = 24;
1667         sc->component_depth = 10;
1668         break;
1669     case 1237:
1670         sc->index = 25;
1671         break;
1672     case 1238:
1673         sc->index = 26;
1674         break;
1675     case 1241:
1676         sc->index = 27;
1677         sc->component_depth = 10;
1678         break;
1679     case 1242:
1680         sc->index = 28;
1681         break;
1682     case 1243:
1683         sc->index = 29;
1684         break;
1685     case 1250:
1686         sc->index = 30;
1687         sc->component_depth = 10;
1688         break;
1689     case 1251:
1690         sc->index = 31;
1691         break;
1692     case 1252:
1693         sc->index = 32;
1694         break;
1695     case 1253:
1696         sc->index = 33;
1697         break;
1698     default:
1699         return -1;
1700     }
1701
1702     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1703     sc->aspect_ratio = (AVRational){ 16, 9 };
1704
1705     if(s->oformat == &ff_mxf_opatom_muxer){
1706         mxf->edit_unit_byte_count = frame_size;
1707         return 1;
1708     }
1709
1710     mxf->edit_unit_byte_count = KAG_SIZE;
1711     for (i = 0; i < s->nb_streams; i++) {
1712         AVStream *st = s->streams[i];
1713         MXFStreamContext *sc = st->priv_data;
1714         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1715             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1716             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1717         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1718             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1719             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1720         }
1721     }
1722
1723     return 1;
1724 }
1725
1726 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1727 {
1728     MXFContext *mxf = s->priv_data;
1729     MXFStreamContext *sc = st->priv_data;
1730     uint8_t *vs_pack, *vsc_pack;
1731     int i, ul_index, frame_size, stype, pal;
1732
1733     if (mxf->header_written)
1734         return 1;
1735
1736     // Check for minimal frame size
1737     if (pkt->size < 120000)
1738         return -1;
1739
1740     vs_pack  = pkt->data + 80*5 + 48;
1741     vsc_pack = pkt->data + 80*5 + 53;
1742     stype    = vs_pack[3] & 0x1f;
1743     pal      = (vs_pack[3] >> 5) & 0x1;
1744
1745     if ((vs_pack[2] & 0x07) == 0x02)
1746         sc->aspect_ratio = (AVRational){ 16, 9 };
1747     else
1748         sc->aspect_ratio = (AVRational){ 4, 3 };
1749
1750     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
1751     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
1752     // and set field dominance accordingly
1753     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
1754
1755     switch (stype) {
1756     case 0x18: // DV100 720p
1757         ul_index = 6 + pal;
1758         frame_size = pal ? 288000 : 240000;
1759         if (sc->interlaced) {
1760             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
1761             sc->interlaced = 0;
1762         }
1763         break;
1764     case 0x14: // DV100 1080i
1765         ul_index = 4 + pal;
1766         frame_size = pal ? 576000 : 480000;
1767         break;
1768     case 0x04: // DV50
1769         ul_index = 2 + pal;
1770         frame_size = pal ? 288000 : 240000;
1771         break;
1772     default: // DV25
1773         ul_index = 0 + pal;
1774         frame_size = pal ? 144000 : 120000;
1775     }
1776
1777     sc->index = ul_index + 16;
1778     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
1779
1780     if(s->oformat == &ff_mxf_opatom_muxer) {
1781         mxf->edit_unit_byte_count = frame_size;
1782         return 1;
1783     }
1784
1785     mxf->edit_unit_byte_count = KAG_SIZE;
1786     for (i = 0; i < s->nb_streams; i++) {
1787         AVStream *st = s->streams[i];
1788         MXFStreamContext *sc = st->priv_data;
1789         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1790             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1791             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1792         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1793             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1794             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1795         }
1796     }
1797
1798     return 1;
1799 }
1800
1801 static const struct {
1802     UID uid;
1803     int frame_size;
1804     int profile;
1805     uint8_t interlaced;
1806 } mxf_h264_codec_uls[] = {
1807     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x20,0x01 },      0, 110, 0 }, // AVC High 10 Intra
1808     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 232960,   0, 1 }, // AVC Intra 50 1080i60
1809     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 281088,   0, 1 }, // AVC Intra 50 1080i50
1810     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 232960,   0, 0 }, // AVC Intra 50 1080p30
1811     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 281088,   0, 0 }, // AVC Intra 50 1080p25
1812     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x08 }, 116736,   0, 0 }, // AVC Intra 50 720p60
1813     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x09 }, 140800,   0, 0 }, // AVC Intra 50 720p50
1814     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x30,0x01 },      0, 122, 0 }, // AVC High 422 Intra
1815     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x01 }, 472576,   0, 1 }, // AVC Intra 100 1080i60
1816     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x02 }, 568832,   0, 1 }, // AVC Intra 100 1080i50
1817     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x03 }, 472576,   0, 0 }, // AVC Intra 100 1080p30
1818     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x04 }, 568832,   0, 0 }, // AVC Intra 100 1080p25
1819     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x08 }, 236544,   0, 0 }, // AVC Intra 100 720p60
1820     {{ 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0a,0x04,0x01,0x02,0x02,0x01,0x32,0x31,0x09 }, 284672,   0, 0 }, // AVC Intra 100 720p50
1821 };
1822
1823 static int mxf_parse_h264_frame(AVFormatContext *s, AVStream *st,
1824                                 AVPacket *pkt, MXFIndexEntry *e)
1825 {
1826     MXFContext *mxf = s->priv_data;
1827     MXFStreamContext *sc = st->priv_data;
1828     static const int mxf_h264_num_codec_uls = sizeof(mxf_h264_codec_uls) / sizeof(mxf_h264_codec_uls[0]);
1829     const uint8_t *buf = pkt->data;
1830     const uint8_t *buf_end = pkt->data + pkt->size;
1831     uint32_t state = -1;
1832     int extra_size = 512; // support AVC Intra files without SPS/PPS header
1833     int i, frame_size;
1834     uint8_t uid_found;
1835
1836     if (pkt->size > extra_size)
1837         buf_end -= pkt->size - extra_size; // no need to parse beyond SPS/PPS header
1838
1839     for (;;) {
1840         buf = avpriv_find_start_code(buf, buf_end, &state);
1841         if (buf >= buf_end)
1842             break;
1843         --buf;
1844         switch (state & 0x1f) {
1845         case NAL_SPS:
1846             st->codec->profile = buf[1];
1847             e->flags |= 0x40;
1848             break;
1849         case NAL_PPS:
1850             if (e->flags & 0x40) { // sequence header present
1851                 e->flags |= 0x80; // random access
1852                 extra_size = 0;
1853                 buf = buf_end;
1854             }
1855             break;
1856         default:
1857             break;
1858         }
1859     }
1860
1861     if (mxf->header_written)
1862         return 1;
1863
1864     sc->aspect_ratio = (AVRational){ 16, 9 }; // 16:9 is mandatory for broadcast HD
1865     sc->component_depth = 10; // AVC Intra is always 10 Bit
1866     sc->interlaced = st->codec->field_order != AV_FIELD_PROGRESSIVE ? 1 : 0;
1867     if (sc->interlaced)
1868         sc->field_dominance = 1; // top field first is mandatory for AVC Intra
1869
1870     uid_found = 0;
1871     frame_size = pkt->size + extra_size;
1872     for (i = 0; i < mxf_h264_num_codec_uls; i++) {
1873         if (frame_size == mxf_h264_codec_uls[i].frame_size && sc->interlaced == mxf_h264_codec_uls[i].interlaced) {
1874             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1875             return 1;
1876         } else if (st->codec->profile == mxf_h264_codec_uls[i].profile) {
1877             sc->codec_ul = &mxf_h264_codec_uls[i].uid;
1878             uid_found = 1;
1879         }
1880     }
1881
1882     if (!uid_found) {
1883         av_log(s, AV_LOG_ERROR, "AVC Intra 50/100 supported only\n");
1884         return 0;
1885     }
1886
1887     return 1;
1888 }
1889
1890 static const UID mxf_mpeg2_codec_uls[] = {
1891     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1892     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1893     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1894     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1895     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1896     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1897     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1898     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1899     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
1900     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
1901 };
1902
1903 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1904 {
1905     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
1906
1907     if (avctx->profile == 4) { // Main
1908         if (avctx->level == 8) // Main
1909             return &mxf_mpeg2_codec_uls[0+long_gop];
1910         else if (avctx->level == 4) // High
1911             return &mxf_mpeg2_codec_uls[4+long_gop];
1912         else if (avctx->level == 6) // High 14
1913             return &mxf_mpeg2_codec_uls[8+long_gop];
1914     } else if (avctx->profile == 0) { // 422
1915         if (avctx->level == 5) // Main
1916             return &mxf_mpeg2_codec_uls[2+long_gop];
1917         else if (avctx->level == 2) // High
1918             return &mxf_mpeg2_codec_uls[6+long_gop];
1919     }
1920     return NULL;
1921 }
1922
1923 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
1924                                  AVPacket *pkt, MXFIndexEntry *e)
1925 {
1926     MXFStreamContext *sc = st->priv_data;
1927     uint32_t c = -1;
1928     int i;
1929
1930     for(i = 0; i < pkt->size - 4; i++) {
1931         c = (c<<8) + pkt->data[i];
1932         if (c == 0x1b5) {
1933             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1934                 st->codec->profile = pkt->data[i+1] & 0x07;
1935                 st->codec->level   = pkt->data[i+2] >> 4;
1936             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1937                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1938                 if (sc->interlaced)
1939                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
1940                 break;
1941             }
1942         } else if (c == 0x1b8) { // gop
1943             if (pkt->data[i+4]>>6 & 0x01) { // closed
1944                 sc->closed_gop = 1;
1945                 if (e->flags & 0x40) // sequence header present
1946                     e->flags |= 0x80; // random access
1947             }
1948         } else if (c == 0x1b3) { // seq
1949             e->flags |= 0x40;
1950             switch ((pkt->data[i+4]>>4) & 0xf) {
1951             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1952             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1953             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1954             default:
1955                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1956                           st->codec->width, st->codec->height, 1024*1024);
1957             }
1958         } else if (c == 0x100) { // pic
1959             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1960             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
1961             if (pict_type == 2) { // P frame
1962                 e->flags |= 0x22;
1963                 sc->closed_gop = 0; // reset closed gop, don't matter anymore
1964             } else if (pict_type == 3) { // B frame
1965                 if (sc->closed_gop)
1966                     e->flags |= 0x13; // only backward prediction
1967                 else
1968                     e->flags |= 0x33;
1969                 sc->temporal_reordering = -1;
1970             } else if (!pict_type) {
1971                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1972                 return 0;
1973             }
1974         }
1975     }
1976     if (s->oformat != &ff_mxf_d10_muxer)
1977         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1978     return !!sc->codec_ul;
1979 }
1980
1981 static uint64_t mxf_parse_timestamp(time_t timestamp)
1982 {
1983     struct tm tmbuf;
1984     struct tm *time = gmtime_r(&timestamp, &tmbuf);
1985     if (!time)
1986         return 0;
1987     return (uint64_t)(time->tm_year+1900) << 48 |
1988            (uint64_t)(time->tm_mon+1)     << 40 |
1989            (uint64_t) time->tm_mday       << 32 |
1990                       time->tm_hour       << 24 |
1991                       time->tm_min        << 16 |
1992                       time->tm_sec        << 8;
1993 }
1994
1995 static void mxf_gen_umid(AVFormatContext *s)
1996 {
1997     MXFContext *mxf = s->priv_data;
1998     uint32_t seed = av_get_random_seed();
1999     uint64_t umid = seed + 0x5294713400000000LL;
2000
2001     AV_WB64(mxf->umid  , umid);
2002     AV_WB64(mxf->umid+8, umid>>8);
2003
2004     mxf->instance_number = seed & 0xFFFFFF;
2005 }
2006
2007 static int mxf_init_timecode(AVFormatContext *s, AVStream *st, AVRational rate)
2008 {
2009     MXFContext *mxf = s->priv_data;
2010     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
2011     if (!tcr)
2012         tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
2013
2014     if (tcr)
2015         return av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
2016     else
2017         return av_timecode_init(&mxf->tc, rate, 0, 0, s);
2018 }
2019
2020 static int mxf_write_header(AVFormatContext *s)
2021 {
2022     MXFContext *mxf = s->priv_data;
2023     int i, ret;
2024     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
2025     const MXFSamplesPerFrame *spf = NULL;
2026     AVDictionaryEntry *t;
2027     int64_t timestamp = 0;
2028
2029     if (!s->nb_streams)
2030         return -1;
2031
2032     if (s->oformat == &ff_mxf_opatom_muxer && s->nb_streams !=1){
2033         av_log(s, AV_LOG_ERROR, "there must be exactly one stream for mxf opatom\n");
2034         return -1;
2035     }
2036
2037     for (i = 0; i < s->nb_streams; i++) {
2038         AVStream *st = s->streams[i];
2039         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
2040         if (!sc)
2041             return AVERROR(ENOMEM);
2042         st->priv_data = sc;
2043
2044         if (((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) && s->oformat != &ff_mxf_opatom_muxer) {
2045             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
2046             return -1;
2047         }
2048
2049         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2050             const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(st->codec->pix_fmt);
2051             // TODO: should be avg_frame_rate
2052             AVRational rate, tbc = st->time_base;
2053             // Default component depth to 8
2054             sc->component_depth = 8;
2055             sc->h_chroma_sub_sample = 2;
2056             sc->color_siting = 0xFF;
2057
2058             if (pix_desc) {
2059                 sc->component_depth     = pix_desc->comp[0].depth_minus1 + 1;
2060                 sc->h_chroma_sub_sample = 1 << pix_desc->log2_chroma_w;
2061             }
2062             switch (ff_choose_chroma_location(s, st)) {
2063             case AVCHROMA_LOC_TOPLEFT: sc->color_siting = 0; break;
2064             case AVCHROMA_LOC_LEFT:    sc->color_siting = 6; break;
2065             case AVCHROMA_LOC_TOP:     sc->color_siting = 1; break;
2066             case AVCHROMA_LOC_CENTER:  sc->color_siting = 3; break;
2067             }
2068
2069             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2070             spf = ff_mxf_get_samples_per_frame(s, tbc);
2071             if (!spf) {
2072                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
2073                        tbc.den, tbc.num);
2074                 return AVERROR(EINVAL);
2075             }
2076             mxf->time_base = spf->time_base;
2077             rate = av_inv_q(mxf->time_base);
2078             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
2079             if((ret = mxf_init_timecode(s, st, rate)) < 0)
2080                 return ret;
2081
2082             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;
2083             if (s->oformat == &ff_mxf_d10_muxer) {
2084                 if ((sc->video_bit_rate == 50000000) && (mxf->time_base.den == 25)) {
2085                     sc->index = 3;
2086                 } else if ((sc->video_bit_rate == 49999840 || sc->video_bit_rate == 50000000) && (mxf->time_base.den != 25)) {
2087                     sc->index = 5;
2088                 } else if (sc->video_bit_rate == 40000000) {
2089                     if (mxf->time_base.den == 25) sc->index = 7;
2090                     else                          sc->index = 9;
2091                 } else if (sc->video_bit_rate == 30000000) {
2092                     if (mxf->time_base.den == 25) sc->index = 11;
2093                     else                          sc->index = 13;
2094                 } else {
2095                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
2096                     return -1;
2097                 }
2098
2099                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
2100                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *
2101                     mxf->time_base.num / (8*mxf->time_base.den);
2102                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2103                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;
2104                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
2105
2106                 sc->signal_standard = 1;
2107             }
2108             if (mxf->signal_standard >= 0)
2109                 sc->signal_standard = mxf->signal_standard;
2110         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
2111             if (st->codec->sample_rate != 48000) {
2112                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
2113                 return -1;
2114             }
2115             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
2116             if (s->oformat == &ff_mxf_d10_muxer) {
2117                 if (st->index != 1) {
2118                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
2119                     return -1;
2120                 }
2121                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
2122                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
2123                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
2124                 }
2125                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
2126             } else if (s->oformat == &ff_mxf_opatom_muxer) {
2127                 AVRational tbc = av_inv_q(mxf->audio_edit_rate);
2128
2129                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
2130                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
2131                     av_log(s, AV_LOG_ERROR, "Only pcm_s16le and pcm_s24le audio codecs are implemented\n");
2132                     return AVERROR_PATCHWELCOME;
2133                 }
2134                 if (st->codec->channels != 1) {
2135                     av_log(s, AV_LOG_ERROR, "MXF OPAtom only supports single channel audio\n");
2136                     return AVERROR(EINVAL);
2137                 }
2138
2139                 spf = ff_mxf_get_samples_per_frame(s, tbc);
2140                 if (!spf){
2141                     av_log(s, AV_LOG_ERROR, "Unsupported timecode frame rate %d/%d\n", tbc.den, tbc.num);
2142                     return AVERROR(EINVAL);
2143                 }
2144
2145                 mxf->time_base = st->time_base;
2146                 if((ret = mxf_init_timecode(s, st, av_inv_q(spf->time_base))) < 0)
2147                     return ret;
2148
2149                 mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
2150                 mxf->edit_unit_byte_count = (av_get_bits_per_sample(st->codec->codec_id) * st->codec->channels) >> 3;
2151                 sc->index = 2;
2152             } else {
2153                 mxf->slice_count = 1;
2154             }
2155         }
2156
2157         if (!sc->index) {
2158             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
2159             if (sc->index == -1) {
2160                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
2161                        "codec not currently supported in container\n", i);
2162                 return -1;
2163             }
2164         }
2165
2166         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
2167
2168         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
2169         sc->track_essence_element_key[15] = present[sc->index];
2170         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
2171
2172         if (!present[sc->index])
2173             mxf->essence_container_count++;
2174         present[sc->index]++;
2175     }
2176
2177     if (s->oformat == &ff_mxf_d10_muxer || s->oformat == &ff_mxf_opatom_muxer) {
2178         mxf->essence_container_count = 1;
2179     }
2180
2181     if (!(s->flags & AVFMT_FLAG_BITEXACT))
2182         mxf_gen_umid(s);
2183
2184     for (i = 0; i < s->nb_streams; i++) {
2185         MXFStreamContext *sc = s->streams[i]->priv_data;
2186         // update element count
2187         sc->track_essence_element_key[13] = present[sc->index];
2188         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
2189             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
2190         else
2191             sc->order = AV_RB32(sc->track_essence_element_key+12);
2192     }
2193
2194     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
2195         timestamp = ff_iso8601_to_unix_time(t->value);
2196     if (timestamp)
2197         mxf->timestamp = mxf_parse_timestamp(timestamp);
2198     mxf->duration = -1;
2199
2200     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
2201     if (!mxf->timecode_track)
2202         return AVERROR(ENOMEM);
2203     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
2204     if (!mxf->timecode_track->priv_data)
2205         return AVERROR(ENOMEM);
2206     mxf->timecode_track->index = -1;
2207
2208     if (!spf)
2209         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
2210
2211     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
2212         return -1;
2213
2214     return 0;
2215 }
2216
2217 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
2218 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 };
2219
2220 static void mxf_write_system_item(AVFormatContext *s)
2221 {
2222     MXFContext *mxf = s->priv_data;
2223     AVIOContext *pb = s->pb;
2224     unsigned frame;
2225     uint32_t time_code;
2226
2227     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2228
2229     // write system metadata pack
2230     avio_write(pb, system_metadata_pack_key, 16);
2231     klv_encode_ber4_length(pb, 57);
2232     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
2233     avio_w8(pb, 0x04); // content package rate
2234     avio_w8(pb, 0x00); // content package type
2235     avio_wb16(pb, 0x00); // channel handle
2236     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow
2237     if (mxf->essence_container_count > 1)
2238         avio_write(pb, multiple_desc_ul, 16);
2239     else {
2240         MXFStreamContext *sc = s->streams[0]->priv_data;
2241         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
2242     }
2243     avio_w8(pb, 0);
2244     avio_wb64(pb, 0);
2245     avio_wb64(pb, 0); // creation date/time stamp
2246
2247     avio_w8(pb, 0x81); // SMPTE 12M time code
2248     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
2249     avio_wb32(pb, time_code);
2250     avio_wb32(pb, 0); // binary group data
2251     avio_wb64(pb, 0);
2252
2253     // write system metadata package set
2254     avio_write(pb, system_metadata_package_set_key, 16);
2255     klv_encode_ber4_length(pb, 35);
2256     avio_w8(pb, 0x83); // UMID
2257     avio_wb16(pb, 0x20);
2258     mxf_write_umid(s, 1);
2259 }
2260
2261 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2262 {
2263     MXFContext *mxf = s->priv_data;
2264     AVIOContext *pb = s->pb;
2265     MXFStreamContext *sc = st->priv_data;
2266     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /
2267         (8*mxf->time_base.den); // frame size
2268     int pad;
2269
2270     packet_size += 16 + 4;
2271     packet_size += klv_fill_size(packet_size);
2272
2273     klv_encode_ber4_length(pb, pkt->size);
2274     avio_write(pb, pkt->data, pkt->size);
2275
2276     // ensure CBR muxing by padding to correct video frame size
2277     pad = packet_size - pkt->size - 16 - 4;
2278     if (pad > 20) {
2279         avio_write(s->pb, klv_fill_key, 16);
2280         pad -= 16 + 4;
2281         klv_encode_ber4_length(s->pb, pad);
2282         ffio_fill(s->pb, 0, pad);
2283         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
2284     } else {
2285         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
2286         ffio_fill(s->pb, 0, pad);
2287     }
2288 }
2289
2290 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
2291 {
2292     MXFContext *mxf = s->priv_data;
2293     AVIOContext *pb = s->pb;
2294     int frame_size = pkt->size / st->codec->block_align;
2295     uint8_t *samples = pkt->data;
2296     uint8_t *end = pkt->data + pkt->size;
2297     int i;
2298
2299     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
2300
2301     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
2302     avio_wl16(pb, frame_size);
2303     avio_w8(pb, (1<<st->codec->channels)-1);
2304
2305     while (samples < end) {
2306         for (i = 0; i < st->codec->channels; i++) {
2307             uint32_t sample;
2308             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {
2309                 sample = AV_RL24(samples)<< 4;
2310                 samples += 3;
2311             } else {
2312                 sample = AV_RL16(samples)<<12;
2313                 samples += 2;
2314             }
2315             avio_wl32(pb, sample | i);
2316         }
2317         for (; i < 8; i++)
2318             avio_wl32(pb, i);
2319     }
2320 }
2321
2322 static int mxf_write_opatom_body_partition(AVFormatContext *s)
2323 {
2324     MXFContext *mxf = s->priv_data;
2325     AVIOContext *pb = s->pb;
2326     AVStream *st = s->streams[0];
2327     MXFStreamContext *sc = st->priv_data;
2328     const uint8_t *key = NULL;
2329
2330     int err;
2331
2332     if (!mxf->header_written)
2333         key = body_partition_key;
2334
2335     if ((err = mxf_write_partition(s, 1, 0, key, 0)) < 0)
2336         return err;
2337     mxf_write_klv_fill(s);
2338     avio_write(pb, sc->track_essence_element_key, 16);
2339     klv_encode_ber9_length(pb, mxf->body_offset);
2340     return 0;
2341 }
2342
2343 static int mxf_write_opatom_packet(AVFormatContext *s, AVPacket *pkt, MXFIndexEntry *ie)
2344 {
2345     MXFContext *mxf = s->priv_data;
2346     AVIOContext *pb = s->pb;
2347
2348     int err;
2349
2350     if (!mxf->header_written) {
2351         if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2352             return err;
2353         mxf_write_klv_fill(s);
2354
2355         if ((err = mxf_write_opatom_body_partition(s)) < 0)
2356             return err;
2357         mxf->header_written = 1;
2358     }
2359
2360     if (!mxf->edit_unit_byte_count) {
2361         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2362         mxf->index_entries[mxf->edit_units_count].flags = ie->flags;
2363         mxf->index_entries[mxf->edit_units_count].temporal_ref = ie->temporal_ref;
2364     }
2365     mxf->edit_units_count++;
2366     avio_write(pb, pkt->data, pkt->size);
2367     mxf->body_offset += pkt->size;
2368     avio_flush(pb);
2369
2370     return 0;
2371 }
2372
2373 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
2374 {
2375     MXFContext *mxf = s->priv_data;
2376     AVIOContext *pb = s->pb;
2377     AVStream *st = s->streams[pkt->stream_index];
2378     MXFStreamContext *sc = st->priv_data;
2379     MXFIndexEntry ie = {0};
2380     int err;
2381
2382     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
2383         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
2384                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
2385             mxf->edit_units_count = 0;
2386             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
2387             return err;
2388         }
2389     }
2390
2391     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
2392         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
2393             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
2394             return -1;
2395         }
2396     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {
2397         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
2398             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
2399             return -1;
2400         }
2401     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {
2402         if (!mxf_parse_dv_frame(s, st, pkt)) {
2403             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
2404             return -1;
2405         }
2406     } else if (st->codec->codec_id == AV_CODEC_ID_H264) {
2407         if (!mxf_parse_h264_frame(s, st, pkt, &ie)) {
2408             av_log(s, AV_LOG_ERROR, "could not get h264 profile\n");
2409             return -1;
2410         }
2411     }
2412
2413     if (s->oformat == &ff_mxf_opatom_muxer)
2414         return mxf_write_opatom_packet(s, pkt, &ie);
2415
2416     if (!mxf->header_written) {
2417         if (mxf->edit_unit_byte_count) {
2418             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
2419                 return err;
2420             mxf_write_klv_fill(s);
2421             mxf_write_index_table_segment(s);
2422         } else {
2423             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
2424                 return err;
2425         }
2426         mxf->header_written = 1;
2427     }
2428
2429     if (st->index == 0) {
2430         if (!mxf->edit_unit_byte_count &&
2431             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
2432             !(ie.flags & 0x33)) { // I frame, Gop start
2433             mxf_write_klv_fill(s);
2434             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
2435                 return err;
2436             mxf_write_klv_fill(s);
2437             mxf_write_index_table_segment(s);
2438         }
2439
2440         mxf_write_klv_fill(s);
2441         mxf_write_system_item(s);
2442
2443         if (!mxf->edit_unit_byte_count) {
2444             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2445             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2446             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2447             mxf->body_offset += KAG_SIZE; // size of system element
2448         }
2449         mxf->edit_units_count++;
2450     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2451         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2452             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2453     }
2454
2455     mxf_write_klv_fill(s);
2456     avio_write(pb, sc->track_essence_element_key, 16); // write key
2457     if (s->oformat == &ff_mxf_d10_muxer) {
2458         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2459             mxf_write_d10_video_packet(s, st, pkt);
2460         else
2461             mxf_write_d10_audio_packet(s, st, pkt);
2462     } else {
2463         klv_encode_ber4_length(pb, pkt->size); // write length
2464         avio_write(pb, pkt->data, pkt->size);
2465         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2466     }
2467
2468     avio_flush(pb);
2469
2470     return 0;
2471 }
2472
2473 static void mxf_write_random_index_pack(AVFormatContext *s)
2474 {
2475     MXFContext *mxf = s->priv_data;
2476     AVIOContext *pb = s->pb;
2477     uint64_t pos = avio_tell(pb);
2478     int i;
2479
2480     avio_write(pb, random_index_pack_key, 16);
2481     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
2482
2483     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer)
2484         avio_wb32(pb, 1); // BodySID of header partition
2485     else
2486         avio_wb32(pb, 0);
2487     avio_wb64(pb, 0); // offset of header partition
2488
2489     for (i = 0; i < mxf->body_partitions_count; i++) {
2490         avio_wb32(pb, 1); // BodySID
2491         avio_wb64(pb, mxf->body_partition_offset[i]);
2492     }
2493
2494     avio_wb32(pb, 0); // BodySID of footer partition
2495     avio_wb64(pb, mxf->footer_partition_offset);
2496
2497     avio_wb32(pb, avio_tell(pb) - pos + 4);
2498 }
2499
2500 static int mxf_write_footer(AVFormatContext *s)
2501 {
2502     MXFContext *mxf = s->priv_data;
2503     AVIOContext *pb = s->pb;
2504     int err = 0;
2505
2506     if (!mxf->header_written ||
2507         (s->oformat == &ff_mxf_opatom_muxer && !mxf->body_partition_offset)) {
2508         /* reason could be invalid options/not supported codec/out of memory */
2509         err = AVERROR_UNKNOWN;
2510         goto end;
2511     }
2512
2513     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2514
2515     mxf_write_klv_fill(s);
2516     mxf->footer_partition_offset = avio_tell(pb);
2517     if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) { // no need to repeat index
2518         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
2519             goto end;
2520     } else {
2521         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
2522             goto end;
2523         mxf_write_klv_fill(s);
2524         mxf_write_index_table_segment(s);
2525     }
2526
2527     mxf_write_klv_fill(s);
2528     mxf_write_random_index_pack(s);
2529
2530     if (s->pb->seekable) {
2531         if (s->oformat == &ff_mxf_opatom_muxer){
2532             /* rewrite body partition to update lengths */
2533             avio_seek(pb, mxf->body_partition_offset[0], SEEK_SET);
2534             if ((err = mxf_write_opatom_body_partition(s)) < 0)
2535                 goto end;
2536         }
2537
2538         avio_seek(pb, 0, SEEK_SET);
2539         if (mxf->edit_unit_byte_count && s->oformat != &ff_mxf_opatom_muxer) {
2540             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
2541                 goto end;
2542             mxf_write_klv_fill(s);
2543             mxf_write_index_table_segment(s);
2544         } else {
2545             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
2546                 goto end;
2547         }
2548     }
2549
2550 end:
2551     ff_audio_interleave_close(s);
2552
2553     av_freep(&mxf->index_entries);
2554     av_freep(&mxf->body_partition_offset);
2555     av_freep(&mxf->timecode_track->priv_data);
2556     av_freep(&mxf->timecode_track);
2557
2558     mxf_free(s);
2559
2560     return err < 0 ? err : 0;
2561 }
2562
2563 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2564 {
2565     int i, stream_count = 0;
2566
2567     for (i = 0; i < s->nb_streams; i++)
2568         stream_count += !!s->streams[i]->last_in_packet_buffer;
2569
2570     if (stream_count && (s->nb_streams == stream_count || flush)) {
2571         AVPacketList *pktl = s->internal->packet_buffer;
2572         if (s->nb_streams != stream_count) {
2573             AVPacketList *last = NULL;
2574             // find last packet in edit unit
2575             while (pktl) {
2576                 if (!stream_count || pktl->pkt.stream_index == 0)
2577                     break;
2578                 last = pktl;
2579                 pktl = pktl->next;
2580                 stream_count--;
2581             }
2582             // purge packet queue
2583             while (pktl) {
2584                 AVPacketList *next = pktl->next;
2585
2586                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2587                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2588                 av_free_packet(&pktl->pkt);
2589                 av_freep(&pktl);
2590                 pktl = next;
2591             }
2592             if (last)
2593                 last->next = NULL;
2594             else {
2595                 s->internal->packet_buffer = NULL;
2596                 s->internal->packet_buffer_end= NULL;
2597                 goto out;
2598             }
2599             pktl = s->internal->packet_buffer;
2600         }
2601
2602         *out = pktl->pkt;
2603         av_log(s, AV_LOG_TRACE, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
2604         s->internal->packet_buffer = pktl->next;
2605         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2606             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2607         if(!s->internal->packet_buffer)
2608             s->internal->packet_buffer_end= NULL;
2609         av_freep(&pktl);
2610         return 1;
2611     } else {
2612     out:
2613         av_init_packet(out);
2614         return 0;
2615     }
2616 }
2617
2618 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2619 {
2620     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
2621     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
2622
2623     return next->dts > pkt->dts ||
2624         (next->dts == pkt->dts && sc->order < sc2->order);
2625 }
2626
2627 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2628 {
2629     return ff_audio_rechunk_interleave(s, out, pkt, flush,
2630                                mxf_interleave_get_packet, mxf_compare_timestamps);
2631 }
2632
2633 #define MXF_COMMON_OPTIONS \
2634     { "signal_standard", "Force/set Sigal Standard",\
2635       offsetof(MXFContext, signal_standard), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2636     { "bt601", "ITU-R BT.601 and BT.656, also SMPTE 125M (525 and 625 line interlaced)",\
2637       0, AV_OPT_TYPE_CONST, {.i64 = 1}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2638     { "bt1358", "ITU-R BT.1358 and ITU-R BT.799-3, also SMPTE 293M (525 and 625 line progressive)",\
2639       0, AV_OPT_TYPE_CONST, {.i64 = 2}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2640     { "smpte347m", "SMPTE 347M (540 Mbps mappings)",\
2641       0, AV_OPT_TYPE_CONST, {.i64 = 3}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2642     { "smpte274m", "SMPTE 274M (1125 line)",\
2643       0, AV_OPT_TYPE_CONST, {.i64 = 4}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2644     { "smpte296m", "SMPTE 296M (750 line progressive)",\
2645       0, AV_OPT_TYPE_CONST, {.i64 = 5}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2646     { "smpte349m", "SMPTE 349M (1485 Mbps mappings)",\
2647       0, AV_OPT_TYPE_CONST, {.i64 = 6}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},\
2648     { "smpte428", "SMPTE 428-1 DCDM",\
2649       0, AV_OPT_TYPE_CONST, {.i64 = 7}, -1, 7, AV_OPT_FLAG_ENCODING_PARAM, "signal_standard"},
2650
2651
2652
2653 static const AVOption mxf_options[] = {
2654     MXF_COMMON_OPTIONS
2655     { NULL },
2656 };
2657
2658 static const AVClass mxf_muxer_class = {
2659     .class_name     = "MXF muxer",
2660     .item_name      = av_default_item_name,
2661     .option         = mxf_options,
2662     .version        = LIBAVUTIL_VERSION_INT,
2663 };
2664
2665 static const AVOption d10_options[] = {
2666     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
2667       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
2668     MXF_COMMON_OPTIONS
2669     { NULL },
2670 };
2671
2672 static const AVClass mxf_d10_muxer_class = {
2673     .class_name     = "MXF-D10 muxer",
2674     .item_name      = av_default_item_name,
2675     .option         = d10_options,
2676     .version        = LIBAVUTIL_VERSION_INT,
2677 };
2678
2679 static const AVOption opatom_options[] = {
2680     { "mxf_audio_edit_rate", "Audio edit rate for timecode",
2681         offsetof(MXFContext, audio_edit_rate), AV_OPT_TYPE_RATIONAL, {.dbl=25}, 0, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
2682     MXF_COMMON_OPTIONS
2683     { NULL },
2684 };
2685
2686 static const AVClass mxf_opatom_muxer_class = {
2687     .class_name     = "MXF-OPAtom muxer",
2688     .item_name      = av_default_item_name,
2689     .option         = opatom_options,
2690     .version        = LIBAVUTIL_VERSION_INT,
2691 };
2692
2693 AVOutputFormat ff_mxf_muxer = {
2694     .name              = "mxf",
2695     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
2696     .mime_type         = "application/mxf",
2697     .extensions        = "mxf",
2698     .priv_data_size    = sizeof(MXFContext),
2699     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2700     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2701     .write_header      = mxf_write_header,
2702     .write_packet      = mxf_write_packet,
2703     .write_trailer     = mxf_write_footer,
2704     .flags             = AVFMT_NOTIMESTAMPS,
2705     .interleave_packet = mxf_interleave,
2706     .priv_class        = &mxf_muxer_class,
2707 };
2708
2709 AVOutputFormat ff_mxf_d10_muxer = {
2710     .name              = "mxf_d10",
2711     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
2712     .mime_type         = "application/mxf",
2713     .priv_data_size    = sizeof(MXFContext),
2714     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2715     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2716     .write_header      = mxf_write_header,
2717     .write_packet      = mxf_write_packet,
2718     .write_trailer     = mxf_write_footer,
2719     .flags             = AVFMT_NOTIMESTAMPS,
2720     .interleave_packet = mxf_interleave,
2721     .priv_class        = &mxf_d10_muxer_class,
2722 };
2723
2724 AVOutputFormat ff_mxf_opatom_muxer = {
2725     .name              = "mxf_opatom",
2726     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) Operational Pattern Atom"),
2727     .mime_type         = "application/mxf",
2728     .extensions        = "mxf",
2729     .priv_data_size    = sizeof(MXFContext),
2730     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2731     .video_codec       = AV_CODEC_ID_DNXHD,
2732     .write_header      = mxf_write_header,
2733     .write_packet      = mxf_write_packet,
2734     .write_trailer     = mxf_write_footer,
2735     .flags             = AVFMT_NOTIMESTAMPS,
2736     .interleave_packet = mxf_interleave,
2737     .priv_class        = &mxf_opatom_muxer_class,
2738 };