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

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