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

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