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 RP210: SMPTE Metadata Dictionary
  30  * SMPTE RP224: Registry of SMPTE Universal Labels
  31  */
  32
  33 #include <inttypes.h>
  34 #include <math.h>
  35 #include <time.h>
  36
  37 #include "libavutil/opt.h"
  38 #include "libavutil/random_seed.h"
  39 #include "libavutil/timecode.h"
  40 #include "libavutil/avassert.h"
  41 #include "libavcodec/bytestream.h"
  42 #include "libavcodec/dnxhddata.h"
  43 #include "audiointerleave.h"
  44 #include "avformat.h"
  45 #include "avio_internal.h"
  46 #include "internal.h"
  47 #include "mxf.h"
  48 #include "config.h"
  49
  50 extern AVOutputFormat ff_mxf_d10_muxer;
  51
  52 #define EDIT_UNITS_PER_BODY 250
  53 #define KAG_SIZE 512
  54
  55 typedef struct {
  56     int local_tag;
  57     UID uid;
  58 } MXFLocalTagPair;
  59
  60 typedef struct {
  61     uint8_t flags;
  62     uint64_t offset;
  63     unsigned slice_offset; ///< offset of audio slice
  64     uint16_t temporal_ref;
  65 } MXFIndexEntry;
  66
  67 typedef struct {
  68     AudioInterleaveContext aic;
  69     UID track_essence_element_key;
  70     int index;               ///< index in mxf_essence_container_uls table
  71     const UID *codec_ul;
  72     int order;               ///< interleaving order if dts are equal
  73     int interlaced;          ///< whether picture is interlaced
  74     int field_dominance;     ///< tff=1, bff=2
  75     int component_depth;
  76     int temporal_reordering;
  77     AVRational aspect_ratio; ///< display aspect ratio
  78     int closed_gop;          ///< gop is closed, used in mpeg-2 frame parsing
  79     int video_bit_rate;
  80 } MXFStreamContext;
  81
  82 typedef struct {
  83     UID container_ul;
  84     UID element_ul;
  85     UID codec_ul;
  86     void (*write_desc)(AVFormatContext *, AVStream *);
  87 } MXFContainerEssenceEntry;
  88
  89 static const struct {
  90     enum AVCodecID id;
  91     int index;
  92 } mxf_essence_mappings[] = {
  93     { AV_CODEC_ID_MPEG2VIDEO, 0 },
  94     { AV_CODEC_ID_PCM_S24LE,  1 },
  95     { AV_CODEC_ID_PCM_S16LE,  1 },
  96     { AV_CODEC_ID_DVVIDEO,   15 },
  97     { AV_CODEC_ID_DNXHD,     24 },
  98     { AV_CODEC_ID_NONE }
  99 };
 100
 101 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
 102 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
 103 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
 104 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
 105 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
 106
 107 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
 108     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 109       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 110       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 111       mxf_write_mpegvideo_desc },
 112     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 113       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 114       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 115       mxf_write_aes3_desc },
 116     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 117       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 118       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 119       mxf_write_wav_desc },
 120     // D-10 625/50 PAL 50mb/s
 121     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 122       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 123       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 124       mxf_write_cdci_desc },
 125     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 126       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 127       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 128       mxf_write_generic_sound_desc },
 129     // D-10 525/60 NTSC 50mb/s
 130     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 131       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 132       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 133       mxf_write_cdci_desc },
 134     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 135       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 136       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 137       mxf_write_generic_sound_desc },
 138     // D-10 625/50 PAL 40mb/s
 139     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 140       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 141       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 142       mxf_write_cdci_desc },
 143     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 144       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 145       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 146       mxf_write_generic_sound_desc },
 147     // D-10 525/60 NTSC 40mb/s
 148     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 149       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 150       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 151       mxf_write_cdci_desc },
 152     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 153       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 154       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 155       mxf_write_generic_sound_desc },
 156     // D-10 625/50 PAL 30mb/s
 157     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 158       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 159       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 160       mxf_write_cdci_desc },
 161     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 162       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 163       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 164       mxf_write_generic_sound_desc },
 165     // D-10 525/60 NTSC 30mb/s
 166     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 167       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 168       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 169       mxf_write_cdci_desc },
 170     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 171       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 172       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 173       mxf_write_generic_sound_desc },
 174     // DV Unknown
 175     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x7F,0x01 },
 176       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 177       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x00,0x00,0x00 },
 178       mxf_write_cdci_desc },
 179     // DV25 525/60
 180     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x40,0x01 },
 181       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 182       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x01,0x00 },
 183       mxf_write_cdci_desc },
 184     // DV25 625/50
 185     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x41,0x01 },
 186       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 187       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 },
 188       mxf_write_cdci_desc },
 189     // DV50 525/60
 190     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x50,0x01 },
 191       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 192       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x03,0x00 },
 193       mxf_write_cdci_desc },
 194     // DV50 625/50
 195     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x51,0x01 },
 196       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 197       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 },
 198       mxf_write_cdci_desc },
 199     // DV100 1080/60
 200     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x60,0x01 },
 201       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 202       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x05,0x00 },
 203       mxf_write_cdci_desc },
 204     // DV100 1080/50
 205     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x61,0x01 },
 206       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 207       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x06,0x00 },
 208       mxf_write_cdci_desc },
 209     // DV100 720/60
 210     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x62,0x01 },
 211       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 212       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x07,0x00 },
 213       mxf_write_cdci_desc },
 214     // DV100 720/50
 215     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x02,0x63,0x01 },
 216       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x18,0x01,0x01,0x00 },
 217       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x08,0x00 },
 218       mxf_write_cdci_desc },
 219     // DNxHD 1080p 10bit high
 220     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 221       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 222       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x01,0x00,0x00 },
 223       mxf_write_cdci_desc },
 224     // DNxHD 1080p 8bit medium
 225     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x11,0x01,0x00 },
 226       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 227       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x71,0x03,0x00,0x00 },
 228       mxf_write_cdci_desc },
 229     // DNxHD 1080p 8bit 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,0x04,0x01,0x02,0x02,0x71,0x04,0x00,0x00 },
 233       mxf_write_cdci_desc },
 234     // DNxHD 1080i 10bit high
 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,0x04,0x01,0x02,0x02,0x71,0x07,0x00,0x00 },
 238       mxf_write_cdci_desc },
 239     // DNxHD 1080i 8bit medium
 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,0x04,0x01,0x02,0x02,0x71,0x08,0x00,0x00 },
 243       mxf_write_cdci_desc },
 244     // DNxHD 1080i 8bit 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,0x04,0x01,0x02,0x02,0x71,0x09,0x00,0x00 },
 248       mxf_write_cdci_desc },
 249     // DNxHD 720p 10bit
 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,0x04,0x01,0x02,0x02,0x71,0x10,0x00,0x00 },
 253       mxf_write_cdci_desc },
 254     // DNxHD 720p 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,0x04,0x01,0x02,0x02,0x71,0x11,0x00,0x00 },
 258       mxf_write_cdci_desc },
 259     // DNxHD 720p 8bit medium
 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,0x04,0x01,0x02,0x02,0x71,0x12,0x00,0x00 },
 263       mxf_write_cdci_desc },
 264     // DNxHD 720p 8bit low
 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,0x04,0x01,0x02,0x02,0x71,0x13,0x00,0x00 },
 268       mxf_write_cdci_desc },
 269     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 270       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 271       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 272       NULL },
 273 };
 274
 275 typedef struct MXFContext {
 276     AVClass *av_class;
 277     int64_t footer_partition_offset;
 278     int essence_container_count;
 279     AVRational time_base;
 280     int header_written;
 281     MXFIndexEntry *index_entries;
 282     unsigned edit_units_count;
 283     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 284     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 285     int last_indexed_edit_unit;
 286     uint64_t *body_partition_offset;
 287     unsigned body_partitions_count;
 288     int last_key_index;  ///< index of last key frame
 289     uint64_t duration;
 290     AVTimecode tc;       ///< timecode context
 291     AVStream *timecode_track;
 292     int timecode_base;       ///< rounded time code base (25 or 30)
 293     int edit_unit_byte_count; ///< fixed edit unit byte count
 294     uint64_t body_offset;
 295     uint32_t instance_number;
 296     uint8_t umid[16];        ///< unique material identifier
 297     int channel_count;
 298 } MXFContext;
 299
 300 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 301 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 302
 303 /**
 304  * complete key for operation pattern, partitions, and primer pack
 305  */
 306 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 307 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 308 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 309 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 310 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 311 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
 312 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
 313 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 314 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 315
 316 /**
 317  * partial key for header metadata
 318  */
 319 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 320 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 321
 322 /**
 323  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 324  */
 325 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 326     // preface set
 327     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 328     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 329     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 330     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 331     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 332     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 333     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 334     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 335     // Identification
 336     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 337     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 338     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 339     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 340     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 341     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 342     // Content Storage
 343     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 344     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 345     // Essence Container Data
 346     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 347     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 348     // Package
 349     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 350     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 351     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 352     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 353     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 354     // Track
 355     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 356     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 357     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 358     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 359     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 360     // Sequence
 361     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 362     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 363     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 364     // Source Clip
 365     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 366     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 367     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 368     // Timecode Component
 369     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 370     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 371     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 372     // File Descriptor
 373     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 374     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 375     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 376     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 377     // Generic Picture Essence Descriptor
 378     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 379     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 380     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 381     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 382     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 383     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 384     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 385     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 386     { 0x3212, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x01,0x06,0x00,0x00,0x00}}, /* Field Dominance (Opt) */
 387     // CDCI Picture Essence Descriptor
 388     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 389     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 390     // Generic Sound Essence Descriptor
 391     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 392     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 393     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 394     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 395     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 396     // Index Table Segment
 397     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 398     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 399     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 400     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 401     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 402     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 403     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 404     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 405     // MPEG video Descriptor
 406     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 407     { 0x8007, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0A,0x00,0x00}}, /* ProfileAndLevel */
 408     // Wave Audio Essence Descriptor
 409     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 410     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 411 };
 412
 413 static void mxf_write_uuid(AVIOContext *pb, enum MXFMetadataSetType type, int value)
 414 {
 415     avio_write(pb, uuid_base, 12);
 416     avio_wb16(pb, type);
 417     avio_wb16(pb, value);
 418 }
 419
 420 static void mxf_write_umid(AVFormatContext *s, int type)
 421 {
 422     MXFContext *mxf = s->priv_data;
 423     avio_write(s->pb, umid_ul, 13);
 424     avio_wb24(s->pb, mxf->instance_number);
 425     avio_write(s->pb, mxf->umid, 15);
 426     avio_w8(s->pb, type);
 427 }
 428
 429 static void mxf_write_refs_count(AVIOContext *pb, int ref_count)
 430 {
 431     avio_wb32(pb, ref_count);
 432     avio_wb32(pb, 16);
 433 }
 434
 435 static int klv_ber_length(uint64_t len)
 436 {
 437     if (len < 128)
 438         return 1;
 439     else
 440         return (av_log2(len) >> 3) + 2;
 441 }
 442
 443 static int klv_encode_ber_length(AVIOContext *pb, uint64_t len)
 444 {
 445     // Determine the best BER size
 446     int size;
 447     if (len < 128) {
 448         //short form
 449         avio_w8(pb, len);
 450         return 1;
 451     }
 452
 453     size = (av_log2(len) >> 3) + 1;
 454
 455     // long form
 456     avio_w8(pb, 0x80 + size);
 457     while(size) {
 458         size--;
 459         avio_w8(pb, len >> 8 * size & 0xff);
 460     }
 461     return 0;
 462 }
 463
 464 static void klv_encode_ber4_length(AVIOContext *pb, int len)
 465 {
 466     avio_w8(pb, 0x80 + 3);
 467     avio_wb24(pb, len);
 468 }
 469
 470 /*
 471  * Get essence container ul index
 472  */
 473 static int mxf_get_essence_container_ul_index(enum AVCodecID id)
 474 {
 475     int i;
 476     for (i = 0; mxf_essence_mappings[i].id; i++)
 477         if (mxf_essence_mappings[i].id == id)
 478             return mxf_essence_mappings[i].index;
 479     return -1;
 480 }
 481
 482 static void mxf_write_primer_pack(AVFormatContext *s)
 483 {
 484     AVIOContext *pb = s->pb;
 485     int local_tag_number, i = 0;
 486
 487     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 488
 489     avio_write(pb, primer_pack_key, 16);
 490     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 491
 492     avio_wb32(pb, local_tag_number); // local_tag num
 493     avio_wb32(pb, 18); // item size, always 18 according to the specs
 494
 495     for (i = 0; i < local_tag_number; i++) {
 496         avio_wb16(pb, mxf_local_tag_batch[i].local_tag);
 497         avio_write(pb, mxf_local_tag_batch[i].uid, 16);
 498     }
 499 }
 500
 501 static void mxf_write_local_tag(AVIOContext *pb, int size, int tag)
 502 {
 503     avio_wb16(pb, tag);
 504     avio_wb16(pb, size);
 505 }
 506
 507 static void mxf_write_metadata_key(AVIOContext *pb, unsigned int value)
 508 {
 509     avio_write(pb, header_metadata_key, 13);
 510     avio_wb24(pb, value);
 511 }
 512
 513 static void mxf_free(AVFormatContext *s)
 514 {
 515     int i;
 516
 517     for (i = 0; i < s->nb_streams; i++) {
 518         AVStream *st = s->streams[i];
 519         av_freep(&st->priv_data);
 520     }
 521 }
 522
 523 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 524 {
 525     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 526     while (uls->uid[0]) {
 527         if (type == uls->id)
 528             break;
 529         uls++;
 530     }
 531     return uls;
 532 }
 533
 534 //one EC -> one descriptor. N ECs -> MultipleDescriptor + N descriptors
 535 #define DESCRIPTOR_COUNT(essence_container_count) \
 536     (essence_container_count > 1 ? essence_container_count + 1 : essence_container_count)
 537
 538 static void mxf_write_essence_container_refs(AVFormatContext *s)
 539 {
 540     MXFContext *c = s->priv_data;
 541     AVIOContext *pb = s->pb;
 542     int i;
 543
 544     mxf_write_refs_count(pb, DESCRIPTOR_COUNT(c->essence_container_count));
 545     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 546     for (i = 0; i < c->essence_container_count; i++) {
 547         MXFStreamContext *sc = s->streams[i]->priv_data;
 548         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 549     }
 550
 551     if (c->essence_container_count > 1)
 552         avio_write(pb, multiple_desc_ul, 16);
 553 }
 554
 555 static void mxf_write_preface(AVFormatContext *s)
 556 {
 557     MXFContext *mxf = s->priv_data;
 558     AVIOContext *pb = s->pb;
 559
 560     mxf_write_metadata_key(pb, 0x012f00);
 561     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 562     klv_encode_ber_length(pb, 130 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
 563
 564     // write preface set uid
 565     mxf_write_local_tag(pb, 16, 0x3C0A);
 566     mxf_write_uuid(pb, Preface, 0);
 567     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 568
 569     // last modified date
 570     mxf_write_local_tag(pb, 8, 0x3B02);
 571     avio_wb64(pb, mxf->timestamp);
 572
 573     // write version
 574     mxf_write_local_tag(pb, 2, 0x3B05);
 575     avio_wb16(pb, 258); // v1.2
 576
 577     // write identification_refs
 578     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 579     mxf_write_refs_count(pb, 1);
 580     mxf_write_uuid(pb, Identification, 0);
 581
 582     // write content_storage_refs
 583     mxf_write_local_tag(pb, 16, 0x3B03);
 584     mxf_write_uuid(pb, ContentStorage, 0);
 585
 586     // operational pattern
 587     mxf_write_local_tag(pb, 16, 0x3B09);
 588     avio_write(pb, op1a_ul, 16);
 589
 590     // write essence_container_refs
 591     mxf_write_local_tag(pb, 8 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count), 0x3B0A);
 592     mxf_write_essence_container_refs(s);
 593
 594     // write dm_scheme_refs
 595     mxf_write_local_tag(pb, 8, 0x3B0B);
 596     avio_wb64(pb, 0);
 597 }
 598
 599 /*
 600  * Write a local tag containing an ascii string as utf-16
 601  */
 602 static void mxf_write_local_tag_utf16(AVIOContext *pb, int tag, const char *value)
 603 {
 604     int i, size = strlen(value);
 605     mxf_write_local_tag(pb, size*2, tag);
 606     for (i = 0; i < size; i++)
 607         avio_wb16(pb, value[i]);
 608 }
 609
 610 static void mxf_write_identification(AVFormatContext *s)
 611 {
 612     MXFContext *mxf = s->priv_data;
 613     AVIOContext *pb = s->pb;
 614     const char *company = "FFmpeg";
 615     const char *product = "OP1a Muxer";
 616     const char *version;
 617     int length;
 618
 619     mxf_write_metadata_key(pb, 0x013000);
 620     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 621
 622     version = s->flags & AVFMT_FLAG_BITEXACT ?
 623         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 624     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
 625     klv_encode_ber_length(pb, length);
 626
 627     // write uid
 628     mxf_write_local_tag(pb, 16, 0x3C0A);
 629     mxf_write_uuid(pb, Identification, 0);
 630     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 631
 632     // write generation uid
 633     mxf_write_local_tag(pb, 16, 0x3C09);
 634     mxf_write_uuid(pb, Identification, 1);
 635
 636     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 637     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 638     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 639
 640     // write product uid
 641     mxf_write_local_tag(pb, 16, 0x3C05);
 642     mxf_write_uuid(pb, Identification, 2);
 643
 644     // modification date
 645     mxf_write_local_tag(pb, 8, 0x3C06);
 646     avio_wb64(pb, mxf->timestamp);
 647 }
 648
 649 static void mxf_write_content_storage(AVFormatContext *s)
 650 {
 651     AVIOContext *pb = s->pb;
 652
 653     mxf_write_metadata_key(pb, 0x011800);
 654     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 655     klv_encode_ber_length(pb, 92);
 656
 657     // write uid
 658     mxf_write_local_tag(pb, 16, 0x3C0A);
 659     mxf_write_uuid(pb, ContentStorage, 0);
 660     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 661
 662     // write package reference
 663     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 664     mxf_write_refs_count(pb, 2);
 665     mxf_write_uuid(pb, MaterialPackage, 0);
 666     mxf_write_uuid(pb, SourcePackage, 0);
 667
 668     // write essence container data
 669     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 670     mxf_write_refs_count(pb, 1);
 671     mxf_write_uuid(pb, EssenceContainerData, 0);
 672 }
 673
 674 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 675 {
 676     MXFContext *mxf = s->priv_data;
 677     AVIOContext *pb = s->pb;
 678     MXFStreamContext *sc = st->priv_data;
 679
 680     mxf_write_metadata_key(pb, 0x013b00);
 681     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 682     klv_encode_ber_length(pb, 80);
 683
 684     // write track uid
 685     mxf_write_local_tag(pb, 16, 0x3C0A);
 686     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 687     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 688
 689     // write track id
 690     mxf_write_local_tag(pb, 4, 0x4801);
 691     avio_wb32(pb, st->index+2);
 692
 693     // write track number
 694     mxf_write_local_tag(pb, 4, 0x4804);
 695     if (type == MaterialPackage)
 696         avio_wb32(pb, 0); // track number of material package is 0
 697     else
 698         avio_write(pb, sc->track_essence_element_key + 12, 4);
 699
 700     mxf_write_local_tag(pb, 8, 0x4B01);
 701     avio_wb32(pb, mxf->time_base.den);
 702     avio_wb32(pb, mxf->time_base.num);
 703
 704     // write origin
 705     mxf_write_local_tag(pb, 8, 0x4B02);
 706     avio_wb64(pb, 0);
 707
 708     // write sequence refs
 709     mxf_write_local_tag(pb, 16, 0x4803);
 710     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 711 }
 712
 713 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 };
 714
 715 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 716 {
 717     MXFContext *mxf = s->priv_data;
 718     AVIOContext *pb = s->pb;
 719
 720     // find data define uls
 721     mxf_write_local_tag(pb, 16, 0x0201);
 722     if (st == mxf->timecode_track)
 723         avio_write(pb, smpte_12m_timecode_track_data_ul, 16);
 724     else {
 725         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 726         avio_write(pb, data_def_ul->uid, 16);
 727     }
 728
 729     // write duration
 730     mxf_write_local_tag(pb, 8, 0x0202);
 731     avio_wb64(pb, mxf->duration);
 732 }
 733
 734 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 735 {
 736     MXFContext *mxf = s->priv_data;
 737     AVIOContext *pb = s->pb;
 738     enum MXFMetadataSetType component;
 739
 740     mxf_write_metadata_key(pb, 0x010f00);
 741     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 742     klv_encode_ber_length(pb, 80);
 743
 744     mxf_write_local_tag(pb, 16, 0x3C0A);
 745     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 746
 747     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 748     mxf_write_common_fields(s, st);
 749
 750     // write structural component
 751     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 752     mxf_write_refs_count(pb, 1);
 753     if (st == mxf->timecode_track)
 754         component = TimecodeComponent;
 755     else
 756         component = SourceClip;
 757     if (type == SourcePackage)
 758         component += TypeBottom;
 759     mxf_write_uuid(pb, component, st->index);
 760 }
 761
 762 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 763 {
 764     MXFContext *mxf = s->priv_data;
 765     AVIOContext *pb = s->pb;
 766
 767     mxf_write_metadata_key(pb, 0x011400);
 768     klv_encode_ber_length(pb, 75);
 769
 770     // UID
 771     mxf_write_local_tag(pb, 16, 0x3C0A);
 772     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
 773                    TimecodeComponent + TypeBottom, st->index);
 774
 775     mxf_write_common_fields(s, st);
 776
 777     // Start Time Code
 778     mxf_write_local_tag(pb, 8, 0x1501);
 779     avio_wb64(pb, mxf->tc.start);
 780
 781     // Rounded Time Code Base
 782     mxf_write_local_tag(pb, 2, 0x1502);
 783     avio_wb16(pb, mxf->timecode_base);
 784
 785     // Drop Frame
 786     mxf_write_local_tag(pb, 1, 0x1503);
 787     avio_w8(pb, !!(mxf->tc.flags & AV_TIMECODE_FLAG_DROPFRAME));
 788 }
 789
 790 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 791 {
 792     AVIOContext *pb = s->pb;
 793     int i;
 794
 795     mxf_write_metadata_key(pb, 0x011100);
 796     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 797     klv_encode_ber_length(pb, 108);
 798
 799     // write uid
 800     mxf_write_local_tag(pb, 16, 0x3C0A);
 801     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 802
 803     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 804     mxf_write_common_fields(s, st);
 805
 806     // write start_position
 807     mxf_write_local_tag(pb, 8, 0x1201);
 808     avio_wb64(pb, 0);
 809
 810     // write source package uid, end of the reference
 811     mxf_write_local_tag(pb, 32, 0x1101);
 812     if (type == SourcePackage) {
 813         for (i = 0; i < 4; i++)
 814             avio_wb64(pb, 0);
 815     } else
 816         mxf_write_umid(s, 1);
 817
 818     // write source track id
 819     mxf_write_local_tag(pb, 4, 0x1102);
 820     if (type == SourcePackage)
 821         avio_wb32(pb, 0);
 822     else
 823         avio_wb32(pb, st->index+2);
 824 }
 825
 826 static void mxf_write_multi_descriptor(AVFormatContext *s)
 827 {
 828     MXFContext *mxf = s->priv_data;
 829     AVIOContext *pb = s->pb;
 830     const uint8_t *ul;
 831     int i;
 832
 833     mxf_write_metadata_key(pb, 0x014400);
 834     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 835     klv_encode_ber_length(pb, 64 + 16LL * s->nb_streams);
 836
 837     mxf_write_local_tag(pb, 16, 0x3C0A);
 838     mxf_write_uuid(pb, MultipleDescriptor, 0);
 839     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 840
 841     // write sample rate
 842     mxf_write_local_tag(pb, 8, 0x3001);
 843     avio_wb32(pb, mxf->time_base.den);
 844     avio_wb32(pb, mxf->time_base.num);
 845
 846     // write essence container ul
 847     mxf_write_local_tag(pb, 16, 0x3004);
 848     if (mxf->essence_container_count > 1)
 849         ul = multiple_desc_ul;
 850     else {
 851         MXFStreamContext *sc = s->streams[0]->priv_data;
 852         ul = mxf_essence_container_uls[sc->index].container_ul;
 853     }
 854     avio_write(pb, ul, 16);
 855
 856     // write sub descriptor refs
 857     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 858     mxf_write_refs_count(pb, s->nb_streams);
 859     for (i = 0; i < s->nb_streams; i++)
 860         mxf_write_uuid(pb, SubDescriptor, i);
 861 }
 862
 863 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 864 {
 865     MXFContext *mxf = s->priv_data;
 866     MXFStreamContext *sc = st->priv_data;
 867     AVIOContext *pb = s->pb;
 868
 869     avio_write(pb, key, 16);
 870     klv_encode_ber4_length(pb, size+20+8+12+20);
 871
 872     mxf_write_local_tag(pb, 16, 0x3C0A);
 873     mxf_write_uuid(pb, SubDescriptor, st->index);
 874
 875     mxf_write_local_tag(pb, 4, 0x3006);
 876     avio_wb32(pb, st->index+2);
 877
 878     mxf_write_local_tag(pb, 8, 0x3001);
 879     avio_wb32(pb, mxf->time_base.den);
 880     avio_wb32(pb, mxf->time_base.num);
 881
 882     mxf_write_local_tag(pb, 16, 0x3004);
 883     avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 884 }
 885
 886 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
 887 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
 888 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
 889 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
 890 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
 891
 892 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 893 {
 894     MXFStreamContext *sc = st->priv_data;
 895     AVIOContext *pb = s->pb;
 896     int stored_height = (st->codec->height+15)/16*16;
 897     int display_height;
 898     int f1, f2;
 899     unsigned desc_size = size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20;
 900     if (sc->interlaced && sc->field_dominance)
 901         desc_size += 5;
 902
 903     mxf_write_generic_desc(s, st, key, desc_size);
 904
 905     mxf_write_local_tag(pb, 4, 0x3203);
 906     avio_wb32(pb, st->codec->width);
 907
 908     mxf_write_local_tag(pb, 4, 0x3202);
 909     avio_wb32(pb, stored_height>>sc->interlaced);
 910
 911     mxf_write_local_tag(pb, 4, 0x3209);
 912     avio_wb32(pb, st->codec->width);
 913
 914     if (st->codec->height == 608) // PAL + VBI
 915         display_height = 576;
 916     else if (st->codec->height == 512)  // NTSC + VBI
 917         display_height = 486;
 918     else
 919         display_height = st->codec->height;
 920
 921     mxf_write_local_tag(pb, 4, 0x3208);
 922     avio_wb32(pb, display_height>>sc->interlaced);
 923
 924     // component depth
 925     mxf_write_local_tag(pb, 4, 0x3301);
 926     avio_wb32(pb, sc->component_depth);
 927
 928     // horizontal subsampling
 929     mxf_write_local_tag(pb, 4, 0x3302);
 930     avio_wb32(pb, 2);
 931
 932     // frame layout
 933     mxf_write_local_tag(pb, 1, 0x320C);
 934     avio_w8(pb, sc->interlaced);
 935
 936     // video line map
 937     switch (st->codec->height) {
 938     case  576: f1 = 23; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 335 : 336; break;
 939     case  608: f1 =  7; f2 = 320; break;
 940     case  480: f1 = 20; f2 = st->codec->codec_id == AV_CODEC_ID_DVVIDEO ? 285 : 283; break;
 941     case  512: f1 =  7; f2 = 270; break;
 942     case  720: f1 = 26; f2 =   0; break; // progressive
 943     case 1080: f1 = 21; f2 = 584; break;
 944     default:   f1 =  0; f2 =   0; break;
 945     }
 946
 947     if (!sc->interlaced) {
 948         f2  = 0;
 949         f1 *= 2;
 950     }
 951
 952     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
 953     avio_wb32(pb, sc->interlaced ? 2 : 1);
 954     avio_wb32(pb, 4);
 955     avio_wb32(pb, f1);
 956     if (sc->interlaced)
 957         avio_wb32(pb, f2);
 958
 959     mxf_write_local_tag(pb, 8, 0x320E);
 960     avio_wb32(pb, sc->aspect_ratio.num);
 961     avio_wb32(pb, sc->aspect_ratio.den);
 962
 963     mxf_write_local_tag(pb, 16, 0x3201);
 964     avio_write(pb, *sc->codec_ul, 16);
 965
 966     if (sc->interlaced && sc->field_dominance) {
 967         mxf_write_local_tag(pb, 1, 0x3212);
 968         avio_w8(pb, sc->field_dominance);
 969     }
 970
 971 }
 972
 973 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
 974 {
 975     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
 976 }
 977
 978 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
 979 {
 980     AVIOContext *pb = s->pb;
 981     MXFStreamContext *sc = st->priv_data;
 982     int profile_and_level = (st->codec->profile<<4) | st->codec->level;
 983
 984     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8+5);
 985
 986     // bit rate
 987     mxf_write_local_tag(pb, 4, 0x8000);
 988     avio_wb32(pb, sc->video_bit_rate);
 989
 990     // profile and level
 991     mxf_write_local_tag(pb, 1, 0x8007);
 992     if (!st->codec->profile)
 993         profile_and_level |= 0x80; // escape bit
 994     avio_w8(pb, profile_and_level);
 995 }
 996
 997 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 998 {
 999     AVIOContext *pb = s->pb;
1000     MXFContext *mxf = s->priv_data;
1001     int show_warnings = !mxf->footer_partition_offset;
1002
1003     mxf_write_generic_desc(s, st, key, size+5+12+8+8);
1004
1005     // audio locked
1006     mxf_write_local_tag(pb, 1, 0x3D02);
1007     avio_w8(pb, 1);
1008
1009     // write audio sampling rate
1010     mxf_write_local_tag(pb, 8, 0x3D03);
1011     avio_wb32(pb, st->codec->sample_rate);
1012     avio_wb32(pb, 1);
1013
1014     mxf_write_local_tag(pb, 4, 0x3D07);
1015     if (mxf->channel_count == -1) {
1016         if (show_warnings && (s->oformat == &ff_mxf_d10_muxer) && (st->codec->channels != 4) && (st->codec->channels != 8))
1017             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");
1018         avio_wb32(pb, st->codec->channels);
1019     } else if (s->oformat == &ff_mxf_d10_muxer) {
1020         if (show_warnings && (mxf->channel_count < st->codec->channels))
1021             av_log(s, AV_LOG_WARNING, "d10_channelcount < actual number of audio channels : some channels will be discarded\n");
1022         if (show_warnings && (mxf->channel_count != 4) && (mxf->channel_count != 8))
1023             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");
1024         avio_wb32(pb, mxf->channel_count);
1025     } else {
1026         if (show_warnings)
1027             av_log(s, AV_LOG_ERROR, "-d10_channelcount requires MXF D-10 and will be ignored\n");
1028         avio_wb32(pb, st->codec->channels);
1029     }
1030
1031     mxf_write_local_tag(pb, 4, 0x3D01);
1032     avio_wb32(pb, av_get_bits_per_sample(st->codec->codec_id));
1033 }
1034
1035 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
1036 {
1037     AVIOContext *pb = s->pb;
1038
1039     mxf_write_generic_sound_common(s, st, key, size+6+8);
1040
1041     mxf_write_local_tag(pb, 2, 0x3D0A);
1042     avio_wb16(pb, st->codec->block_align);
1043
1044     // avg bytes per sec
1045     mxf_write_local_tag(pb, 4, 0x3D09);
1046     avio_wb32(pb, st->codec->block_align*st->codec->sample_rate);
1047 }
1048
1049 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
1050 {
1051     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
1052 }
1053
1054 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
1055 {
1056     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
1057 }
1058
1059 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
1060 {
1061     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
1062 }
1063
1064 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
1065 {
1066     MXFContext *mxf = s->priv_data;
1067     AVIOContext *pb = s->pb;
1068     int i, track_count = s->nb_streams+1;
1069
1070     if (type == MaterialPackage) {
1071         mxf_write_metadata_key(pb, 0x013600);
1072         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
1073         klv_encode_ber_length(pb, 92 + 16*track_count);
1074     } else {
1075         mxf_write_metadata_key(pb, 0x013700);
1076         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
1077         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
1078     }
1079
1080     // write uid
1081     mxf_write_local_tag(pb, 16, 0x3C0A);
1082     mxf_write_uuid(pb, type, 0);
1083     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
1084     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
1085
1086     // write package umid
1087     mxf_write_local_tag(pb, 32, 0x4401);
1088     mxf_write_umid(s, type == SourcePackage);
1089     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
1090
1091     // package creation date
1092     mxf_write_local_tag(pb, 8, 0x4405);
1093     avio_wb64(pb, mxf->timestamp);
1094
1095     // package modified date
1096     mxf_write_local_tag(pb, 8, 0x4404);
1097     avio_wb64(pb, mxf->timestamp);
1098
1099     // write track refs
1100     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
1101     mxf_write_refs_count(pb, track_count);
1102     mxf_write_uuid(pb, type == MaterialPackage ? Track :
1103                    Track + TypeBottom, -1); // timecode track
1104     for (i = 0; i < s->nb_streams; i++)
1105         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
1106
1107     // write multiple descriptor reference
1108     if (type == SourcePackage) {
1109         mxf_write_local_tag(pb, 16, 0x4701);
1110         if (s->nb_streams > 1) {
1111             mxf_write_uuid(pb, MultipleDescriptor, 0);
1112             mxf_write_multi_descriptor(s);
1113         } else
1114             mxf_write_uuid(pb, SubDescriptor, 0);
1115     }
1116
1117     // write timecode track
1118     mxf_write_track(s, mxf->timecode_track, type);
1119     mxf_write_sequence(s, mxf->timecode_track, type);
1120     mxf_write_timecode_component(s, mxf->timecode_track, type);
1121
1122     for (i = 0; i < s->nb_streams; i++) {
1123         AVStream *st = s->streams[i];
1124         mxf_write_track(s, st, type);
1125         mxf_write_sequence(s, st, type);
1126         mxf_write_structural_component(s, st, type);
1127
1128         if (type == SourcePackage) {
1129             MXFStreamContext *sc = st->priv_data;
1130             mxf_essence_container_uls[sc->index].write_desc(s, st);
1131         }
1132     }
1133 }
1134
1135 static int mxf_write_essence_container_data(AVFormatContext *s)
1136 {
1137     AVIOContext *pb = s->pb;
1138
1139     mxf_write_metadata_key(pb, 0x012300);
1140     klv_encode_ber_length(pb, 72);
1141
1142     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1143     mxf_write_uuid(pb, EssenceContainerData, 0);
1144
1145     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1146     mxf_write_umid(s, 1);
1147
1148     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1149     avio_wb32(pb, 1);
1150
1151     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1152     avio_wb32(pb, 2);
1153
1154     return 0;
1155 }
1156
1157 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1158 {
1159     mxf_write_preface(s);
1160     mxf_write_identification(s);
1161     mxf_write_content_storage(s);
1162     mxf_write_package(s, MaterialPackage);
1163     mxf_write_package(s, SourcePackage);
1164     mxf_write_essence_container_data(s);
1165     return 0;
1166 }
1167
1168 static unsigned klv_fill_size(uint64_t size)
1169 {
1170     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1171     if (pad < 20) // smallest fill item possible
1172         return pad + KAG_SIZE;
1173     else
1174         return pad & (KAG_SIZE-1);
1175 }
1176
1177 static void mxf_write_index_table_segment(AVFormatContext *s)
1178 {
1179     MXFContext *mxf = s->priv_data;
1180     AVIOContext *pb = s->pb;
1181     int i, j, temporal_reordering = 0;
1182     int key_index = mxf->last_key_index;
1183
1184     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1185
1186     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1187         return;
1188
1189     avio_write(pb, index_table_segment_key, 16);
1190
1191     if (mxf->edit_unit_byte_count) {
1192         klv_encode_ber_length(pb, 80);
1193     } else {
1194         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1LL)*6 +
1195                               12+mxf->edit_units_count*(11+mxf->slice_count*4LL));
1196     }
1197
1198     // instance id
1199     mxf_write_local_tag(pb, 16, 0x3C0A);
1200     mxf_write_uuid(pb, IndexTableSegment, 0);
1201
1202     // index edit rate
1203     mxf_write_local_tag(pb, 8, 0x3F0B);
1204     avio_wb32(pb, mxf->time_base.den);
1205     avio_wb32(pb, mxf->time_base.num);
1206
1207     // index start position
1208     mxf_write_local_tag(pb, 8, 0x3F0C);
1209     avio_wb64(pb, mxf->last_indexed_edit_unit);
1210
1211     // index duration
1212     mxf_write_local_tag(pb, 8, 0x3F0D);
1213     if (mxf->edit_unit_byte_count)
1214         avio_wb64(pb, 0); // index table covers whole container
1215     else
1216         avio_wb64(pb, mxf->edit_units_count);
1217
1218     // edit unit byte count
1219     mxf_write_local_tag(pb, 4, 0x3F05);
1220     avio_wb32(pb, mxf->edit_unit_byte_count);
1221
1222     // index sid
1223     mxf_write_local_tag(pb, 4, 0x3F06);
1224     avio_wb32(pb, 2);
1225
1226     // body sid
1227     mxf_write_local_tag(pb, 4, 0x3F07);
1228     avio_wb32(pb, 1);
1229
1230     if (!mxf->edit_unit_byte_count) {
1231         // real slice count - 1
1232         mxf_write_local_tag(pb, 1, 0x3F08);
1233         avio_w8(pb, mxf->slice_count);
1234
1235         // delta entry array
1236         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1237         avio_wb32(pb, s->nb_streams+1); // num of entries
1238         avio_wb32(pb, 6);               // size of one entry
1239         // write system item delta entry
1240         avio_w8(pb, 0);
1241         avio_w8(pb, 0); // slice entry
1242         avio_wb32(pb, 0); // element delta
1243         for (i = 0; i < s->nb_streams; i++) {
1244             AVStream *st = s->streams[i];
1245             MXFStreamContext *sc = st->priv_data;
1246             avio_w8(pb, sc->temporal_reordering);
1247             if (sc->temporal_reordering)
1248                 temporal_reordering = 1;
1249             if (i == 0) { // video track
1250                 avio_w8(pb, 0); // slice number
1251                 avio_wb32(pb, KAG_SIZE); // system item size including klv fill
1252             } else { // audio track
1253                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1254                 audio_frame_size += klv_fill_size(audio_frame_size);
1255                 avio_w8(pb, 1);
1256                 avio_wb32(pb, (i-1)*audio_frame_size); // element delta
1257             }
1258         }
1259
1260         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1261         avio_wb32(pb, mxf->edit_units_count);  // num of entries
1262         avio_wb32(pb, 11+mxf->slice_count*4);  // size of one entry
1263
1264         for (i = 0; i < mxf->edit_units_count; i++) {
1265             int temporal_offset = 0;
1266
1267             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1268                 mxf->last_key_index = key_index;
1269                 key_index = i;
1270             }
1271
1272             if (temporal_reordering) {
1273                 int pic_num_in_gop = i - key_index;
1274                 if (pic_num_in_gop != mxf->index_entries[i].temporal_ref) {
1275                     for (j = key_index; j < mxf->edit_units_count; j++) {
1276                         if (pic_num_in_gop == mxf->index_entries[j].temporal_ref)
1277                             break;
1278                     }
1279                     if (j == mxf->edit_units_count)
1280                         av_log(s, AV_LOG_WARNING, "missing frames\n");
1281                     temporal_offset = j - key_index - pic_num_in_gop;
1282                 }
1283             }
1284             avio_w8(pb, temporal_offset);
1285
1286             if ((mxf->index_entries[i].flags & 0x30) == 0x30) { // back and forward prediction
1287                 avio_w8(pb, mxf->last_key_index - i);
1288             } else {
1289                 avio_w8(pb, key_index - i); // key frame offset
1290                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1291                     mxf->last_key_index = key_index;
1292             }
1293
1294             if (!(mxf->index_entries[i].flags & 0x33) && // I frame
1295                 mxf->index_entries[i].flags & 0x40 && !temporal_offset)
1296                 mxf->index_entries[i].flags |= 0x80; // random access
1297             avio_w8(pb, mxf->index_entries[i].flags);
1298             // stream offset
1299             avio_wb64(pb, mxf->index_entries[i].offset);
1300             if (s->nb_streams > 1)
1301                 avio_wb32(pb, mxf->index_entries[i].slice_offset);
1302         }
1303
1304         mxf->last_key_index = key_index - mxf->edit_units_count;
1305         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1306         mxf->edit_units_count = 0;
1307     }
1308 }
1309
1310 static void mxf_write_klv_fill(AVFormatContext *s)
1311 {
1312     unsigned pad = klv_fill_size(avio_tell(s->pb));
1313     if (pad) {
1314         avio_write(s->pb, klv_fill_key, 16);
1315         pad -= 16 + 4;
1316         klv_encode_ber4_length(s->pb, pad);
1317         ffio_fill(s->pb, 0, pad);
1318         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1319     }
1320 }
1321
1322 static int mxf_write_partition(AVFormatContext *s, int bodysid,
1323                                 int indexsid,
1324                                 const uint8_t *key, int write_metadata)
1325 {
1326     MXFContext *mxf = s->priv_data;
1327     AVIOContext *pb = s->pb;
1328     int64_t header_byte_count_offset;
1329     unsigned index_byte_count = 0;
1330     uint64_t partition_offset = avio_tell(pb);
1331     int err;
1332
1333     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1334         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1335             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1336     else if (mxf->edit_unit_byte_count && indexsid)
1337         index_byte_count = 80;
1338
1339     if (index_byte_count) {
1340         // add encoded ber length
1341         index_byte_count += 16 + klv_ber_length(index_byte_count);
1342         index_byte_count += klv_fill_size(index_byte_count);
1343     }
1344
1345     if (!memcmp(key, body_partition_key, 16)) {
1346         if ((err = av_reallocp_array(&mxf->body_partition_offset, mxf->body_partitions_count + 1,
1347                                      sizeof(*mxf->body_partition_offset))) < 0) {
1348             mxf->body_partitions_count = 0;
1349             return err;
1350         }
1351         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1352     }
1353
1354     // write klv
1355     avio_write(pb, key, 16);
1356     klv_encode_ber_length(pb, 88 + 16LL * DESCRIPTOR_COUNT(mxf->essence_container_count));
1357
1358     // write partition value
1359     avio_wb16(pb, 1); // majorVersion
1360     avio_wb16(pb, 2); // minorVersion
1361     avio_wb32(pb, KAG_SIZE); // KAGSize
1362
1363     avio_wb64(pb, partition_offset); // ThisPartition
1364
1365     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1366         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1367     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1368         avio_wb64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1369     else
1370         avio_wb64(pb, 0);
1371
1372     avio_wb64(pb, mxf->footer_partition_offset); // footerPartition
1373
1374     // set offset
1375     header_byte_count_offset = avio_tell(pb);
1376     avio_wb64(pb, 0); // headerByteCount, update later
1377
1378     // indexTable
1379     avio_wb64(pb, index_byte_count); // indexByteCount
1380     avio_wb32(pb, index_byte_count ? indexsid : 0); // indexSID
1381
1382     // BodyOffset
1383     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1384         avio_wb64(pb, mxf->body_offset);
1385     } else
1386         avio_wb64(pb, 0);
1387
1388     avio_wb32(pb, bodysid); // bodySID
1389
1390     // operational pattern
1391     avio_write(pb, op1a_ul, 16);
1392
1393     // essence container
1394     mxf_write_essence_container_refs(s);
1395
1396     if (write_metadata) {
1397         // mark the start of the headermetadata and calculate metadata size
1398         int64_t pos, start;
1399         unsigned header_byte_count;
1400
1401         mxf_write_klv_fill(s);
1402         start = avio_tell(s->pb);
1403         mxf_write_primer_pack(s);
1404         mxf_write_header_metadata_sets(s);
1405         pos = avio_tell(s->pb);
1406         header_byte_count = pos - start + klv_fill_size(pos);
1407
1408         // update header_byte_count
1409         avio_seek(pb, header_byte_count_offset, SEEK_SET);
1410         avio_wb64(pb, header_byte_count);
1411         avio_seek(pb, pos, SEEK_SET);
1412     }
1413
1414     avio_flush(pb);
1415
1416     return 0;
1417 }
1418
1419 static int mxf_parse_dnxhd_frame(AVFormatContext *s, AVStream *st,
1420 AVPacket *pkt)
1421 {
1422     MXFContext *mxf = s->priv_data;
1423     MXFStreamContext *sc = st->priv_data;
1424     int i, cid;
1425     uint8_t* header_cid;
1426     int frame_size = 0;
1427
1428     if (mxf->header_written)
1429         return 1;
1430
1431     if (pkt->size < 43)
1432         return -1;
1433
1434     header_cid = pkt->data + 0x28;
1435     cid = header_cid[0] << 24 | header_cid[1] << 16 | header_cid[2] << 8 | header_cid[3];
1436
1437     if ((frame_size = avpriv_dnxhd_get_frame_size(cid)) < 0)
1438         return -1;
1439
1440     switch (cid) {
1441     case 1235:
1442         sc->index = 24;
1443         sc->component_depth = 10;
1444         break;
1445     case 1237:
1446         sc->index = 25;
1447         break;
1448     case 1238:
1449         sc->index = 26;
1450         break;
1451     case 1241:
1452         sc->index = 27;
1453         sc->component_depth = 10;
1454         break;
1455     case 1242:
1456         sc->index = 28;
1457         break;
1458     case 1243:
1459         sc->index = 29;
1460         break;
1461     case 1250:
1462         sc->index = 30;
1463         sc->component_depth = 10;
1464         break;
1465     case 1251:
1466         sc->index = 31;
1467         break;
1468     case 1252:
1469         sc->index = 32;
1470         break;
1471     case 1253:
1472         sc->index = 33;
1473         break;
1474     default:
1475         return -1;
1476     }
1477
1478     sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1479     sc->aspect_ratio = (AVRational){ 16, 9 };
1480
1481     mxf->edit_unit_byte_count = KAG_SIZE;
1482     for (i = 0; i < s->nb_streams; i++) {
1483         AVStream *st = s->streams[i];
1484         MXFStreamContext *sc = st->priv_data;
1485         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1486             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1487             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1488         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1489             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1490             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1491         }
1492     }
1493
1494     return 1;
1495 }
1496
1497 static int mxf_parse_dv_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1498 {
1499     MXFContext *mxf = s->priv_data;
1500     MXFStreamContext *sc = st->priv_data;
1501     uint8_t *vs_pack, *vsc_pack;
1502     int i, ul_index, frame_size, stype, pal;
1503
1504     if (mxf->header_written)
1505         return 1;
1506
1507     // Check for minimal frame size
1508     if (pkt->size < 120000)
1509         return -1;
1510
1511     vs_pack  = pkt->data + 80*5 + 48;
1512     vsc_pack = pkt->data + 80*5 + 53;
1513     stype    = vs_pack[3] & 0x1f;
1514     pal      = (vs_pack[3] >> 5) & 0x1;
1515
1516     if ((vs_pack[2] & 0x07) == 0x02)
1517         sc->aspect_ratio = (AVRational){ 16, 9 };
1518     else
1519         sc->aspect_ratio = (AVRational){ 4, 3 };
1520
1521     sc->interlaced = (vsc_pack[3] >> 4) & 0x01;
1522     // TODO: fix dv encoder to set proper FF/FS value in VSC pack
1523     // and set field dominance accordingly
1524     // av_log(s, AV_LOG_DEBUG, "DV vsc pack ff/ss = %x\n", vsc_pack[2] >> 6);
1525
1526     switch (stype) {
1527     case 0x18: // DV100 720p
1528         ul_index = 6 + pal;
1529         frame_size = pal ? 288000 : 240000;
1530         if (sc->interlaced) {
1531             av_log(s, AV_LOG_ERROR, "source marked as interlaced but codec profile is progressive\n");
1532             sc->interlaced = 0;
1533         }
1534         break;
1535     case 0x14: // DV100 1080i
1536         ul_index = 4 + pal;
1537         frame_size = pal ? 576000 : 480000;
1538         break;
1539     case 0x04: // DV50
1540         ul_index = 2 + pal;
1541         frame_size = pal ? 288000 : 240000;
1542         break;
1543     default: // DV25
1544         ul_index = 0 + pal;
1545         frame_size = pal ? 144000 : 120000;
1546     }
1547
1548     sc->index = ul_index + 16;
1549     sc->codec_ul =  &mxf_essence_container_uls[sc->index].codec_ul;
1550
1551     mxf->edit_unit_byte_count = KAG_SIZE;
1552     for (i = 0; i < s->nb_streams; i++) {
1553         AVStream *st = s->streams[i];
1554         MXFStreamContext *sc = st->priv_data;
1555         if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1556             mxf->edit_unit_byte_count += 16 + 4 + sc->aic.samples[0]*sc->aic.sample_size;
1557             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1558         } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1559             mxf->edit_unit_byte_count += 16 + 4 + frame_size;
1560             mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1561         }
1562     }
1563
1564     return 1;
1565 }
1566
1567 static const UID mxf_mpeg2_codec_uls[] = {
1568     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1569     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1570     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1571     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1572     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1573     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1574     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1575     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1576     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x02,0x00 }, // MP@H-14 I-Frame
1577     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x05,0x03,0x00 }, // MP@H-14 Long GOP
1578 };
1579
1580 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1581 {
1582     int long_gop = avctx->gop_size > 1 || avctx->has_b_frames;
1583
1584     if (avctx->profile == 4) { // Main
1585         if (avctx->level == 8) // Main
1586             return &mxf_mpeg2_codec_uls[0+long_gop];
1587         else if (avctx->level == 4) // High
1588             return &mxf_mpeg2_codec_uls[4+long_gop];
1589         else if (avctx->level == 6) // High 14
1590             return &mxf_mpeg2_codec_uls[8+long_gop];
1591     } else if (avctx->profile == 0) { // 422
1592         if (avctx->level == 5) // Main
1593             return &mxf_mpeg2_codec_uls[2+long_gop];
1594         else if (avctx->level == 2) // High
1595             return &mxf_mpeg2_codec_uls[6+long_gop];
1596     }
1597     return NULL;
1598 }
1599
1600 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st,
1601                                  AVPacket *pkt, MXFIndexEntry *e)
1602 {
1603     MXFStreamContext *sc = st->priv_data;
1604     uint32_t c = -1;
1605     int i;
1606
1607     for(i = 0; i < pkt->size - 4; i++) {
1608         c = (c<<8) + pkt->data[i];
1609         if (c == 0x1b5) {
1610             if ((pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1611                 st->codec->profile = pkt->data[i+1] & 0x07;
1612                 st->codec->level   = pkt->data[i+2] >> 4;
1613             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1614                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1615                 if (sc->interlaced)
1616                     sc->field_dominance = 1 + !(pkt->data[i+4] & 0x80); // top field first
1617                 break;
1618             }
1619         } else if (c == 0x1b8) { // gop
1620             if (pkt->data[i+4]>>6 & 0x01) { // closed
1621                 sc->closed_gop = 1;
1622                 if (e->flags & 0x40) // sequence header present
1623                     e->flags |= 0x80; // random access
1624             }
1625         } else if (c == 0x1b3) { // seq
1626             e->flags |= 0x40;
1627             switch ((pkt->data[i+4]>>4) & 0xf) {
1628             case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1629             case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1630             case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1631             default:
1632                 av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1633                           st->codec->width, st->codec->height, 1024*1024);
1634             }
1635         } else if (c == 0x100) { // pic
1636             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1637             e->temporal_ref = (pkt->data[i+1]<<2) | (pkt->data[i+2]>>6);
1638             if (pict_type == 2) { // P frame
1639                 e->flags |= 0x22;
1640                 sc->closed_gop = 0; // reset closed gop, don't matter anymore
1641             } else if (pict_type == 3) { // B frame
1642                 if (sc->closed_gop)
1643                     e->flags |= 0x13; // only backward prediction
1644                 else
1645                     e->flags |= 0x33;
1646                 sc->temporal_reordering = -1;
1647             } else if (!pict_type) {
1648                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1649                 return 0;
1650             }
1651         }
1652     }
1653     if (s->oformat != &ff_mxf_d10_muxer)
1654         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1655     return !!sc->codec_ul;
1656 }
1657
1658 static uint64_t mxf_parse_timestamp(time_t timestamp)
1659 {
1660     struct tm *time = gmtime(&timestamp);
1661     if (!time)
1662         return 0;
1663     return (uint64_t)(time->tm_year+1900) << 48 |
1664            (uint64_t)(time->tm_mon+1)     << 40 |
1665            (uint64_t) time->tm_mday       << 32 |
1666                       time->tm_hour       << 24 |
1667                       time->tm_min        << 16 |
1668                       time->tm_sec        << 8;
1669 }
1670
1671 static void mxf_gen_umid(AVFormatContext *s)
1672 {
1673     MXFContext *mxf = s->priv_data;
1674     uint32_t seed = av_get_random_seed();
1675     uint64_t umid = seed + 0x5294713400000000LL;
1676
1677     AV_WB64(mxf->umid  , umid);
1678     AV_WB64(mxf->umid+8, umid>>8);
1679
1680     mxf->instance_number = seed & 0xFFFFFF;
1681 }
1682
1683 static int mxf_write_header(AVFormatContext *s)
1684 {
1685     MXFContext *mxf = s->priv_data;
1686     int i, ret;
1687     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1688     const MXFSamplesPerFrame *spf = NULL;
1689     AVDictionaryEntry *t;
1690     int64_t timestamp = 0;
1691     AVDictionaryEntry *tcr = av_dict_get(s->metadata, "timecode", NULL, 0);
1692
1693     if (!s->nb_streams)
1694         return -1;
1695
1696     for (i = 0; i < s->nb_streams; i++) {
1697         AVStream *st = s->streams[i];
1698         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1699         if (!sc)
1700             return AVERROR(ENOMEM);
1701         st->priv_data = sc;
1702
1703         if ((i == 0) ^ (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)) {
1704             av_log(s, AV_LOG_ERROR, "there must be exactly one video stream and it must be the first one\n");
1705             return -1;
1706         }
1707
1708         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1709             // TODO: should be avg_frame_rate
1710             AVRational rate, tbc = st->time_base;
1711             // Default component depth to 8
1712             sc->component_depth = 8;
1713             mxf->timecode_base = (tbc.den + tbc.num/2) / tbc.num;
1714             spf = ff_mxf_get_samples_per_frame(s, tbc);
1715             if (!spf) {
1716                 av_log(s, AV_LOG_ERROR, "Unsupported video frame rate %d/%d\n",
1717                        tbc.den, tbc.num);
1718                 return AVERROR(EINVAL);
1719             }
1720             mxf->time_base = spf->time_base;
1721             rate = av_inv_q(mxf->time_base);
1722             avpriv_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1723             if (!tcr)
1724                 tcr = av_dict_get(st->metadata, "timecode", NULL, 0);
1725             if (tcr)
1726                 ret = av_timecode_init_from_string(&mxf->tc, rate, tcr->value, s);
1727             else
1728                 ret = av_timecode_init(&mxf->tc, rate, 0, 0, s);
1729             if (ret < 0)
1730                 return ret;
1731             sc->video_bit_rate = st->codec->bit_rate ? st->codec->bit_rate : st->codec->rc_max_rate;
1732             if (s->oformat == &ff_mxf_d10_muxer) {
1733                 if (sc->video_bit_rate == 50000000) {
1734                     if (mxf->time_base.den == 25) sc->index = 3;
1735                     else                          sc->index = 5;
1736                 } else if (sc->video_bit_rate == 40000000) {
1737                     if (mxf->time_base.den == 25) sc->index = 7;
1738                     else                          sc->index = 9;
1739                 } else if (sc->video_bit_rate == 30000000) {
1740                     if (mxf->time_base.den == 25) sc->index = 11;
1741                     else                          sc->index = 13;
1742                 } else {
1743                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1744                     return -1;
1745                 }
1746
1747                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1748                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)sc->video_bit_rate *
1749                     mxf->time_base.num / (8*mxf->time_base.den);
1750                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1751                 mxf->edit_unit_byte_count += 16 + 4 + 4 + spf->samples_per_frame[0]*8*4;
1752                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1753             }
1754         } else if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1755             if (st->codec->sample_rate != 48000) {
1756                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1757                 return -1;
1758             }
1759             avpriv_set_pts_info(st, 64, 1, st->codec->sample_rate);
1760             if (s->oformat == &ff_mxf_d10_muxer) {
1761                 if (st->index != 1) {
1762                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1763                     return -1;
1764                 }
1765                 if (st->codec->codec_id != AV_CODEC_ID_PCM_S16LE &&
1766                     st->codec->codec_id != AV_CODEC_ID_PCM_S24LE) {
1767                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1768                 }
1769                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1770             } else
1771             mxf->slice_count = 1;
1772         }
1773
1774         if (!sc->index) {
1775             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1776             if (sc->index == -1) {
1777                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1778                        "codec not currently supported in container\n", i);
1779                 return -1;
1780             }
1781         }
1782
1783         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1784
1785         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1786         sc->track_essence_element_key[15] = present[sc->index];
1787         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1788
1789         if (!present[sc->index])
1790             mxf->essence_container_count++;
1791         present[sc->index]++;
1792     }
1793
1794     if (s->oformat == &ff_mxf_d10_muxer) {
1795         mxf->essence_container_count = 1;
1796     }
1797
1798     if (!(s->flags & AVFMT_FLAG_BITEXACT))
1799         mxf_gen_umid(s);
1800
1801     for (i = 0; i < s->nb_streams; i++) {
1802         MXFStreamContext *sc = s->streams[i]->priv_data;
1803         // update element count
1804         sc->track_essence_element_key[13] = present[sc->index];
1805         if (!memcmp(sc->track_essence_element_key, mxf_essence_container_uls[15].element_ul, 13)) // DV
1806             sc->order = (0x15 << 24) | AV_RB32(sc->track_essence_element_key+13);
1807         else
1808             sc->order = AV_RB32(sc->track_essence_element_key+12);
1809     }
1810
1811     if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
1812         timestamp = ff_iso8601_to_unix_time(t->value);
1813     if (timestamp)
1814         mxf->timestamp = mxf_parse_timestamp(timestamp);
1815     mxf->duration = -1;
1816
1817     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1818     if (!mxf->timecode_track)
1819         return AVERROR(ENOMEM);
1820     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1821     if (!mxf->timecode_track->priv_data)
1822         return AVERROR(ENOMEM);
1823     mxf->timecode_track->index = -1;
1824
1825     if (!spf)
1826         spf = ff_mxf_get_samples_per_frame(s, (AVRational){ 1, 25 });
1827
1828     if (ff_audio_interleave_init(s, spf->samples_per_frame, mxf->time_base) < 0)
1829         return -1;
1830
1831     return 0;
1832 }
1833
1834 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1835 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 };
1836
1837 static void mxf_write_system_item(AVFormatContext *s)
1838 {
1839     MXFContext *mxf = s->priv_data;
1840     AVIOContext *pb = s->pb;
1841     unsigned frame;
1842     uint32_t time_code;
1843
1844     frame = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1845
1846     // write system metadata pack
1847     avio_write(pb, system_metadata_pack_key, 16);
1848     klv_encode_ber4_length(pb, 57);
1849     avio_w8(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1850     avio_w8(pb, 0x04); // content package rate
1851     avio_w8(pb, 0x00); // content package type
1852     avio_wb16(pb, 0x00); // channel handle
1853     avio_wb16(pb, (mxf->tc.start + frame) & 0xFFFF); // continuity count, supposed to overflow
1854     if (mxf->essence_container_count > 1)
1855         avio_write(pb, multiple_desc_ul, 16);
1856     else {
1857         MXFStreamContext *sc = s->streams[0]->priv_data;
1858         avio_write(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1859     }
1860     avio_w8(pb, 0);
1861     avio_wb64(pb, 0);
1862     avio_wb64(pb, 0); // creation date/time stamp
1863
1864     avio_w8(pb, 0x81); // SMPTE 12M time code
1865     time_code = av_timecode_get_smpte_from_framenum(&mxf->tc, frame);
1866     avio_wb32(pb, time_code);
1867     avio_wb32(pb, 0); // binary group data
1868     avio_wb64(pb, 0);
1869
1870     // write system metadata package set
1871     avio_write(pb, system_metadata_package_set_key, 16);
1872     klv_encode_ber4_length(pb, 35);
1873     avio_w8(pb, 0x83); // UMID
1874     avio_wb16(pb, 0x20);
1875     mxf_write_umid(s, 1);
1876 }
1877
1878 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1879 {
1880     MXFContext *mxf = s->priv_data;
1881     AVIOContext *pb = s->pb;
1882     MXFStreamContext *sc = st->priv_data;
1883     int packet_size = (uint64_t)sc->video_bit_rate*mxf->time_base.num /
1884         (8*mxf->time_base.den); // frame size
1885     int pad;
1886
1887     packet_size += 16 + 4;
1888     packet_size += klv_fill_size(packet_size);
1889
1890     klv_encode_ber4_length(pb, pkt->size);
1891     avio_write(pb, pkt->data, pkt->size);
1892
1893     // ensure CBR muxing by padding to correct video frame size
1894     pad = packet_size - pkt->size - 16 - 4;
1895     if (pad > 20) {
1896         avio_write(s->pb, klv_fill_key, 16);
1897         pad -= 16 + 4;
1898         klv_encode_ber4_length(s->pb, pad);
1899         ffio_fill(s->pb, 0, pad);
1900         av_assert1(!(avio_tell(s->pb) & (KAG_SIZE-1)));
1901     } else {
1902         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1903         ffio_fill(s->pb, 0, pad);
1904     }
1905 }
1906
1907 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1908 {
1909     MXFContext *mxf = s->priv_data;
1910     AVIOContext *pb = s->pb;
1911     int frame_size = pkt->size / st->codec->block_align;
1912     uint8_t *samples = pkt->data;
1913     uint8_t *end = pkt->data + pkt->size;
1914     int i;
1915
1916     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1917
1918     avio_w8(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1919     avio_wl16(pb, frame_size);
1920     avio_w8(pb, (1<<st->codec->channels)-1);
1921
1922     while (samples < end) {
1923         for (i = 0; i < st->codec->channels; i++) {
1924             uint32_t sample;
1925             if (st->codec->codec_id == AV_CODEC_ID_PCM_S24LE) {
1926                 sample = AV_RL24(samples)<< 4;
1927                 samples += 3;
1928             } else {
1929                 sample = AV_RL16(samples)<<12;
1930                 samples += 2;
1931             }
1932             avio_wl32(pb, sample | i);
1933         }
1934         for (; i < 8; i++)
1935             avio_wl32(pb, i);
1936     }
1937 }
1938
1939 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1940 {
1941     MXFContext *mxf = s->priv_data;
1942     AVIOContext *pb = s->pb;
1943     AVStream *st = s->streams[pkt->stream_index];
1944     MXFStreamContext *sc = st->priv_data;
1945     MXFIndexEntry ie = {0};
1946     int err;
1947
1948     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1949         if ((err = av_reallocp_array(&mxf->index_entries, mxf->edit_units_count
1950                                      + EDIT_UNITS_PER_BODY, sizeof(*mxf->index_entries))) < 0) {
1951             mxf->edit_units_count = 0;
1952             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1953             return err;
1954         }
1955     }
1956
1957     if (st->codec->codec_id == AV_CODEC_ID_MPEG2VIDEO) {
1958         if (!mxf_parse_mpeg2_frame(s, st, pkt, &ie)) {
1959             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1960             return -1;
1961         }
1962     } else if (st->codec->codec_id == AV_CODEC_ID_DNXHD) {
1963         if (!mxf_parse_dnxhd_frame(s, st, pkt)) {
1964             av_log(s, AV_LOG_ERROR, "could not get dnxhd profile\n");
1965             return -1;
1966         }
1967     } else if (st->codec->codec_id == AV_CODEC_ID_DVVIDEO) {
1968         if (!mxf_parse_dv_frame(s, st, pkt)) {
1969             av_log(s, AV_LOG_ERROR, "could not get dv profile\n");
1970             return -1;
1971         }
1972     }
1973
1974     if (!mxf->header_written) {
1975         if (mxf->edit_unit_byte_count) {
1976             if ((err = mxf_write_partition(s, 1, 2, header_open_partition_key, 1)) < 0)
1977                 return err;
1978             mxf_write_klv_fill(s);
1979             mxf_write_index_table_segment(s);
1980         } else {
1981             if ((err = mxf_write_partition(s, 0, 0, header_open_partition_key, 1)) < 0)
1982                 return err;
1983         }
1984         mxf->header_written = 1;
1985     }
1986
1987     if (st->index == 0) {
1988         if (!mxf->edit_unit_byte_count &&
1989             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1990             !(ie.flags & 0x33)) { // I frame, Gop start
1991             mxf_write_klv_fill(s);
1992             if ((err = mxf_write_partition(s, 1, 2, body_partition_key, 0)) < 0)
1993                 return err;
1994             mxf_write_klv_fill(s);
1995             mxf_write_index_table_segment(s);
1996         }
1997
1998         mxf_write_klv_fill(s);
1999         mxf_write_system_item(s);
2000
2001         if (!mxf->edit_unit_byte_count) {
2002             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
2003             mxf->index_entries[mxf->edit_units_count].flags = ie.flags;
2004             mxf->index_entries[mxf->edit_units_count].temporal_ref = ie.temporal_ref;
2005             mxf->body_offset += KAG_SIZE; // size of system element
2006         }
2007         mxf->edit_units_count++;
2008     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
2009         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
2010             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
2011     }
2012
2013     mxf_write_klv_fill(s);
2014     avio_write(pb, sc->track_essence_element_key, 16); // write key
2015     if (s->oformat == &ff_mxf_d10_muxer) {
2016         if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2017             mxf_write_d10_video_packet(s, st, pkt);
2018         else
2019             mxf_write_d10_audio_packet(s, st, pkt);
2020     } else {
2021         klv_encode_ber4_length(pb, pkt->size); // write length
2022         avio_write(pb, pkt->data, pkt->size);
2023         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
2024     }
2025
2026     avio_flush(pb);
2027
2028     return 0;
2029 }
2030
2031 static void mxf_write_random_index_pack(AVFormatContext *s)
2032 {
2033     MXFContext *mxf = s->priv_data;
2034     AVIOContext *pb = s->pb;
2035     uint64_t pos = avio_tell(pb);
2036     int i;
2037
2038     avio_write(pb, random_index_pack_key, 16);
2039     klv_encode_ber_length(pb, 28 + 12LL*mxf->body_partitions_count);
2040
2041     if (mxf->edit_unit_byte_count)
2042         avio_wb32(pb, 1); // BodySID of header partition
2043     else
2044         avio_wb32(pb, 0);
2045     avio_wb64(pb, 0); // offset of header partition
2046
2047     for (i = 0; i < mxf->body_partitions_count; i++) {
2048         avio_wb32(pb, 1); // BodySID
2049         avio_wb64(pb, mxf->body_partition_offset[i]);
2050     }
2051
2052     avio_wb32(pb, 0); // BodySID of footer partition
2053     avio_wb64(pb, mxf->footer_partition_offset);
2054
2055     avio_wb32(pb, avio_tell(pb) - pos + 4);
2056 }
2057
2058 static int mxf_write_footer(AVFormatContext *s)
2059 {
2060     MXFContext *mxf = s->priv_data;
2061     AVIOContext *pb = s->pb;
2062     int err;
2063
2064     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
2065
2066     mxf_write_klv_fill(s);
2067     mxf->footer_partition_offset = avio_tell(pb);
2068     if (mxf->edit_unit_byte_count) { // no need to repeat index
2069         if ((err = mxf_write_partition(s, 0, 0, footer_partition_key, 0)) < 0)
2070             return err;
2071     } else {
2072         if ((err = mxf_write_partition(s, 0, 2, footer_partition_key, 0)) < 0)
2073             return err;
2074         mxf_write_klv_fill(s);
2075         mxf_write_index_table_segment(s);
2076     }
2077
2078     mxf_write_klv_fill(s);
2079     mxf_write_random_index_pack(s);
2080
2081     if (s->pb->seekable) {
2082         avio_seek(pb, 0, SEEK_SET);
2083         if (mxf->edit_unit_byte_count) {
2084             if ((err = mxf_write_partition(s, 1, 2, header_closed_partition_key, 1)) < 0)
2085                 return err;
2086             mxf_write_klv_fill(s);
2087             mxf_write_index_table_segment(s);
2088         } else {
2089             if ((err = mxf_write_partition(s, 0, 0, header_closed_partition_key, 1)) < 0)
2090                 return err;
2091         }
2092     }
2093
2094     ff_audio_interleave_close(s);
2095
2096     av_freep(&mxf->index_entries);
2097     av_freep(&mxf->body_partition_offset);
2098     av_freep(&mxf->timecode_track->priv_data);
2099     av_freep(&mxf->timecode_track);
2100
2101     mxf_free(s);
2102
2103     return 0;
2104 }
2105
2106 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2107 {
2108     int i, stream_count = 0;
2109
2110     for (i = 0; i < s->nb_streams; i++)
2111         stream_count += !!s->streams[i]->last_in_packet_buffer;
2112
2113     if (stream_count && (s->nb_streams == stream_count || flush)) {
2114         AVPacketList *pktl = s->packet_buffer;
2115         if (s->nb_streams != stream_count) {
2116             AVPacketList *last = NULL;
2117             // find last packet in edit unit
2118             while (pktl) {
2119                 if (!stream_count || pktl->pkt.stream_index == 0)
2120                     break;
2121                 last = pktl;
2122                 pktl = pktl->next;
2123                 stream_count--;
2124             }
2125             // purge packet queue
2126             while (pktl) {
2127                 AVPacketList *next = pktl->next;
2128
2129                 if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2130                     s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2131                 av_free_packet(&pktl->pkt);
2132                 av_freep(&pktl);
2133                 pktl = next;
2134             }
2135             if (last)
2136                 last->next = NULL;
2137             else {
2138                 s->packet_buffer = NULL;
2139                 s->packet_buffer_end= NULL;
2140                 goto out;
2141             }
2142             pktl = s->packet_buffer;
2143         }
2144
2145         *out = pktl->pkt;
2146         av_dlog(s, "out st:%d dts:%"PRId64"\n", (*out).stream_index, (*out).dts);
2147         s->packet_buffer = pktl->next;
2148         if(s->streams[pktl->pkt.stream_index]->last_in_packet_buffer == pktl)
2149             s->streams[pktl->pkt.stream_index]->last_in_packet_buffer= NULL;
2150         if(!s->packet_buffer)
2151             s->packet_buffer_end= NULL;
2152         av_freep(&pktl);
2153         return 1;
2154     } else {
2155     out:
2156         av_init_packet(out);
2157         return 0;
2158     }
2159 }
2160
2161 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
2162 {
2163     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
2164     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
2165
2166     return next->dts > pkt->dts ||
2167         (next->dts == pkt->dts && sc->order < sc2->order);
2168 }
2169
2170 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
2171 {
2172     return ff_audio_rechunk_interleave(s, out, pkt, flush,
2173                                mxf_interleave_get_packet, mxf_compare_timestamps);
2174 }
2175
2176 static const AVOption d10_options[] = {
2177     { "d10_channelcount", "Force/set channelcount in generic sound essence descriptor",
2178       offsetof(MXFContext, channel_count), AV_OPT_TYPE_INT, {.i64 = -1}, -1, 8, AV_OPT_FLAG_ENCODING_PARAM},
2179     { NULL },
2180 };
2181
2182 static const AVClass mxf_d10_muxer_class = {
2183     .class_name     = "MXF-D10 muxer",
2184     .item_name      = av_default_item_name,
2185     .option         = d10_options,
2186     .version        = LIBAVUTIL_VERSION_INT,
2187 };
2188
2189 AVOutputFormat ff_mxf_muxer = {
2190     .name              = "mxf",
2191     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
2192     .mime_type         = "application/mxf",
2193     .extensions        = "mxf",
2194     .priv_data_size    = sizeof(MXFContext),
2195     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2196     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2197     .write_header      = mxf_write_header,
2198     .write_packet      = mxf_write_packet,
2199     .write_trailer     = mxf_write_footer,
2200     .flags             = AVFMT_NOTIMESTAMPS,
2201     .interleave_packet = mxf_interleave,
2202 };
2203
2204 AVOutputFormat ff_mxf_d10_muxer = {
2205     .name              = "mxf_d10",
2206     .long_name         = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format) D-10 Mapping"),
2207     .mime_type         = "application/mxf",
2208     .priv_data_size    = sizeof(MXFContext),
2209     .audio_codec       = AV_CODEC_ID_PCM_S16LE,
2210     .video_codec       = AV_CODEC_ID_MPEG2VIDEO,
2211     .write_header      = mxf_write_header,
2212     .write_packet      = mxf_write_packet,
2213     .write_trailer     = mxf_write_footer,
2214     .flags             = AVFMT_NOTIMESTAMPS,
2215     .interleave_packet = mxf_interleave,
2216     .priv_class        = &mxf_d10_muxer_class,
2217 };