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