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

   1 /*
   2  * MXF muxer
   3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
   4  * Copyright (c) 2008 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
   5  *
   6  * This file is part of FFmpeg.
   7  *
   8  * FFmpeg is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * FFmpeg is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with FFmpeg; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 /*
  24  * References
  25  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
  26  * SMPTE 377M MXF File Format Specifications
  27  * SMPTE 379M MXF Generic Container
  28  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
  29  * SMPTE RP210: SMPTE Metadata Dictionary
  30  * SMPTE RP224: Registry of SMPTE Universal Labels
  31  */
  32
  33 //#define DEBUG
  34
  35 #include <math.h>
  36 #include <time.h>
  37
  38 #include "libavutil/fifo.h"
  39 #include "libavcodec/bytestream.h"
  40 #include "audiointerleave.h"
  41 #include "avformat.h"
  42 #include "mxf.h"
  43
  44 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
  45 static const int PAL_samples_per_frame[]  = { 1920, 0 };
  46
  47 AVOutputFormat mxf_d10_muxer;
  48
  49 #define EDIT_UNITS_PER_BODY 250
  50 #define KAG_SIZE 512
  51
  52 typedef struct {
  53     int local_tag;
  54     UID uid;
  55 } MXFLocalTagPair;
  56
  57 typedef struct {
  58     uint8_t flags;
  59     uint64_t offset;
  60     unsigned slice_offset; ///< offset of audio slice
  61 } MXFIndexEntry;
  62
  63 typedef struct {
  64     AudioInterleaveContext aic;
  65     UID track_essence_element_key;
  66     int index;            ///< index in mxf_essence_container_uls table
  67     const UID *codec_ul;
  68     int order;            ///< interleaving order if dts are equal
  69     int interlaced;       ///< wether picture is interlaced
  70     int temporal_reordering;
  71     AVRational aspect_ratio; ///< display aspect ratio
  72 } MXFStreamContext;
  73
  74 typedef struct {
  75     UID container_ul;
  76     UID element_ul;
  77     UID codec_ul;
  78     void (*write_desc)();
  79 } MXFContainerEssenceEntry;
  80
  81 static const struct {
  82     enum CodecID id;
  83     int index;
  84 } mxf_essence_mappings[] = {
  85     { CODEC_ID_MPEG2VIDEO, 0 },
  86     { CODEC_ID_PCM_S24LE,  1 },
  87     { CODEC_ID_PCM_S16LE,  1 },
  88     { 0 }
  89 };
  90
  91 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
  92 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
  93 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
  94 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
  95 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
  96
  97 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
  98     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
  99       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 100       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 101       mxf_write_mpegvideo_desc },
 102     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 103       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 104       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 105       mxf_write_aes3_desc },
 106     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 107       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 108       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 109       mxf_write_wav_desc },
 110     // D-10 625/50 PAL 50mb/s
 111     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 112       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 113       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 114       mxf_write_cdci_desc },
 115     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 116       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 117       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 118       mxf_write_generic_sound_desc },
 119     // D-10 525/60 NTSC 50mb/s
 120     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 121       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 122       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 123       mxf_write_cdci_desc },
 124     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 125       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 126       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 127       mxf_write_generic_sound_desc },
 128     // D-10 625/50 PAL 40mb/s
 129     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 130       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 131       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 132       mxf_write_cdci_desc },
 133     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 134       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 135       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 136       mxf_write_generic_sound_desc },
 137     // D-10 525/60 NTSC 40mb/s
 138     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 139       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 140       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 141       mxf_write_cdci_desc },
 142     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 143       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 144       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 145       mxf_write_generic_sound_desc },
 146     // D-10 625/50 PAL 30mb/s
 147     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 148       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 149       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 150       mxf_write_cdci_desc },
 151     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 152       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 153       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 154       mxf_write_generic_sound_desc },
 155     // D-10 525/60 NTSC 30mb/s
 156     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 157       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 158       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 159       mxf_write_cdci_desc },
 160     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 161       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 162       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 163       mxf_write_generic_sound_desc },
 164     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 165       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 166       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 167       NULL },
 168 };
 169
 170 typedef struct MXFContext {
 171     int64_t footer_partition_offset;
 172     int essence_container_count;
 173     AVRational time_base;
 174     int header_written;
 175     MXFIndexEntry *index_entries;
 176     unsigned edit_units_count;
 177     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 178     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 179     int last_indexed_edit_unit;
 180     uint64_t *body_partition_offset;
 181     unsigned body_partitions_count;
 182     int last_key_index;  ///< index of last key frame
 183     uint64_t duration;
 184     AVStream *timecode_track;
 185     int timecode_base;       ///< rounded time code base (25 or 30)
 186     int timecode_start;      ///< frame number computed from mpeg-2 gop header timecode
 187     int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
 188     int edit_unit_byte_count; ///< fixed edit unit byte count
 189     uint64_t body_offset;
 190 } MXFContext;
 191
 192 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 193 static const uint8_t umid_base[]            = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
 194
 195 /**
 196  * complete key for operation pattern, partitions, and primer pack
 197  */
 198 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
 199 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 200 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 201 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 202 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 203 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
 204 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
 205 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 206 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 207
 208 /**
 209  * partial key for header metadata
 210  */
 211 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 212 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 213
 214 /**
 215  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 216  */
 217 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 218     // preface set
 219     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 220     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 221     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 222     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 223     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 224     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 225     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 226     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 227     // Identification
 228     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 229     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 230     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 231     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 232     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 233     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 234     // Content Storage
 235     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 236     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 237     // Essence Container Data
 238     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 239     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 240     // Package
 241     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 242     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 243     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 244     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 245     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 246     // Track
 247     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 248     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 249     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 250     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 251     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 252     // Sequence
 253     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 254     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 255     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 256     // Source Clip
 257     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 258     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 259     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 260     // Timecode Component
 261     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 262     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 263     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 264     // File Descriptor
 265     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 266     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 267     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 268     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 269     // Generic Picture Essence Descriptor
 270     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 271     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 272     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 273     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 274     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 275     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 276     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 277     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 278     // CDCI Picture Essence Descriptor
 279     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 280     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 281     // Generic Sound Essence Descriptor
 282     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 283     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 284     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 285     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 286     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 287     // Index Table Segment
 288     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 289     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 290     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 291     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 292     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 293     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 294     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 295     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 296     // MPEG video Descriptor
 297     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 298     // Wave Audio Essence Descriptor
 299     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 300     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 301 };
 302
 303 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
 304 {
 305     put_buffer(pb, uuid_base, 12);
 306     put_be16(pb, type);
 307     put_be16(pb, value);
 308 }
 309
 310 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
 311 {
 312     put_buffer(pb, umid_base, 16);
 313     mxf_write_uuid(pb, type, value);
 314 }
 315
 316 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
 317 {
 318     put_be32(pb, ref_count);
 319     put_be32(pb, 16);
 320 }
 321
 322 static int klv_ber_length(uint64_t len)
 323 {
 324     if (len < 128)
 325         return 1;
 326     else
 327         return (av_log2(len) >> 3) + 2;
 328 }
 329
 330 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
 331 {
 332     // Determine the best BER size
 333     int size;
 334     if (len < 128) {
 335         //short form
 336         put_byte(pb, len);
 337         return 1;
 338     }
 339
 340     size = (av_log2(len) >> 3) + 1;
 341
 342     // long form
 343     put_byte(pb, 0x80 + size);
 344     while(size) {
 345         size--;
 346         put_byte(pb, len >> 8 * size & 0xff);
 347     }
 348     return 0;
 349 }
 350
 351 static void klv_encode_ber4_length(ByteIOContext *pb, int len)
 352 {
 353     put_byte(pb, 0x80 + 3);
 354     put_be24(pb, len);
 355 }
 356
 357 /*
 358  * Get essence container ul index
 359  */
 360 static int mxf_get_essence_container_ul_index(enum CodecID id)
 361 {
 362     int i;
 363     for (i = 0; mxf_essence_mappings[i].id; i++)
 364         if (mxf_essence_mappings[i].id == id)
 365             return mxf_essence_mappings[i].index;
 366     return -1;
 367 }
 368
 369 static void mxf_write_primer_pack(AVFormatContext *s)
 370 {
 371     ByteIOContext *pb = s->pb;
 372     int local_tag_number, i = 0;
 373
 374     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 375
 376     put_buffer(pb, primer_pack_key, 16);
 377     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 378
 379     put_be32(pb, local_tag_number); // local_tag num
 380     put_be32(pb, 18); // item size, always 18 according to the specs
 381
 382     for (i = 0; i < local_tag_number; i++) {
 383         put_be16(pb, mxf_local_tag_batch[i].local_tag);
 384         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
 385     }
 386 }
 387
 388 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
 389 {
 390     put_be16(pb, tag);
 391     put_be16(pb, size);
 392 }
 393
 394 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
 395 {
 396     put_buffer(pb, header_metadata_key, 13);
 397     put_be24(pb, value);
 398 }
 399
 400 static void mxf_free(AVFormatContext *s)
 401 {
 402     int i;
 403
 404     for (i = 0; i < s->nb_streams; i++) {
 405         AVStream *st = s->streams[i];
 406         av_freep(&st->priv_data);
 407     }
 408 }
 409
 410 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 411 {
 412     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 413     while (uls->uid[0]) {
 414         if (type == uls->id)
 415             break;
 416         uls++;
 417     }
 418     return uls;
 419 }
 420
 421 static void mxf_write_essence_container_refs(AVFormatContext *s)
 422 {
 423     MXFContext *c = s->priv_data;
 424     ByteIOContext *pb = s->pb;
 425     int i;
 426
 427     mxf_write_refs_count(pb, c->essence_container_count);
 428     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 429     for (i = 0; i < c->essence_container_count; i++) {
 430         MXFStreamContext *sc = s->streams[i]->priv_data;
 431         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 432     }
 433 }
 434
 435 static void mxf_write_preface(AVFormatContext *s)
 436 {
 437     MXFContext *mxf = s->priv_data;
 438     ByteIOContext *pb = s->pb;
 439
 440     mxf_write_metadata_key(pb, 0x012f00);
 441     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 442     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
 443
 444     // write preface set uid
 445     mxf_write_local_tag(pb, 16, 0x3C0A);
 446     mxf_write_uuid(pb, Preface, 0);
 447     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 448
 449     // last modified date
 450     mxf_write_local_tag(pb, 8, 0x3B02);
 451     put_be64(pb, mxf->timestamp);
 452
 453     // write version
 454     mxf_write_local_tag(pb, 2, 0x3B05);
 455     put_be16(pb, 1);
 456
 457     // write identification_refs
 458     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 459     mxf_write_refs_count(pb, 1);
 460     mxf_write_uuid(pb, Identification, 0);
 461
 462     // write content_storage_refs
 463     mxf_write_local_tag(pb, 16, 0x3B03);
 464     mxf_write_uuid(pb, ContentStorage, 0);
 465
 466     // operational pattern
 467     mxf_write_local_tag(pb, 16, 0x3B09);
 468     if (s->nb_streams > 1) {
 469         put_buffer(pb, op1a_ul, 14);
 470         put_be16(pb, 0x0900); // multi track
 471     } else {
 472         put_buffer(pb, op1a_ul, 16);
 473     }
 474
 475     // write essence_container_refs
 476     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
 477     mxf_write_essence_container_refs(s);
 478
 479     // write dm_scheme_refs
 480     mxf_write_local_tag(pb, 8, 0x3B0B);
 481     put_be64(pb, 0);
 482 }
 483
 484 /*
 485  * Write a local tag containing an ascii string as utf-16
 486  */
 487 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
 488 {
 489     int i, size = strlen(value);
 490     mxf_write_local_tag(pb, size*2, tag);
 491     for (i = 0; i < size; i++)
 492         put_be16(pb, value[i]);
 493 }
 494
 495 static void mxf_write_identification(AVFormatContext *s)
 496 {
 497     MXFContext *mxf = s->priv_data;
 498     ByteIOContext *pb = s->pb;
 499     const char *company = "FFmpeg";
 500     const char *product = "OP1a Muxer";
 501     const char *version;
 502     int length;
 503
 504     mxf_write_metadata_key(pb, 0x013000);
 505     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 506
 507     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
 508         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 509     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
 510     klv_encode_ber_length(pb, length);
 511
 512     // write uid
 513     mxf_write_local_tag(pb, 16, 0x3C0A);
 514     mxf_write_uuid(pb, Identification, 0);
 515     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 516
 517     // write generation uid
 518     mxf_write_local_tag(pb, 16, 0x3C09);
 519     mxf_write_uuid(pb, Identification, 1);
 520
 521     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 522     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 523     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 524
 525     // write product uid
 526     mxf_write_local_tag(pb, 16, 0x3C05);
 527     mxf_write_uuid(pb, Identification, 2);
 528
 529     // modification date
 530     mxf_write_local_tag(pb, 8, 0x3C06);
 531     put_be64(pb, mxf->timestamp);
 532 }
 533
 534 static void mxf_write_content_storage(AVFormatContext *s)
 535 {
 536     ByteIOContext *pb = s->pb;
 537
 538     mxf_write_metadata_key(pb, 0x011800);
 539     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 540     klv_encode_ber_length(pb, 92);
 541
 542     // write uid
 543     mxf_write_local_tag(pb, 16, 0x3C0A);
 544     mxf_write_uuid(pb, ContentStorage, 0);
 545     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 546
 547     // write package reference
 548     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 549     mxf_write_refs_count(pb, 2);
 550     mxf_write_uuid(pb, MaterialPackage, 0);
 551     mxf_write_uuid(pb, SourcePackage, 0);
 552
 553     // write essence container data
 554     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 555     mxf_write_refs_count(pb, 1);
 556     mxf_write_uuid(pb, EssenceContainerData, 0);
 557 }
 558
 559 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 560 {
 561     MXFContext *mxf = s->priv_data;
 562     ByteIOContext *pb = s->pb;
 563     MXFStreamContext *sc = st->priv_data;
 564
 565     mxf_write_metadata_key(pb, 0x013b00);
 566     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 567     klv_encode_ber_length(pb, 80);
 568
 569     // write track uid
 570     mxf_write_local_tag(pb, 16, 0x3C0A);
 571     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 572     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 573
 574     // write track id
 575     mxf_write_local_tag(pb, 4, 0x4801);
 576     put_be32(pb, st->index);
 577
 578     // write track number
 579     mxf_write_local_tag(pb, 4, 0x4804);
 580     if (type == MaterialPackage)
 581         put_be32(pb, 0); // track number of material package is 0
 582     else
 583         put_buffer(pb, sc->track_essence_element_key + 12, 4);
 584
 585     mxf_write_local_tag(pb, 8, 0x4B01);
 586     put_be32(pb, mxf->time_base.den);
 587     put_be32(pb, mxf->time_base.num);
 588
 589     // write origin
 590     mxf_write_local_tag(pb, 8, 0x4B02);
 591     put_be64(pb, 0);
 592
 593     // write sequence refs
 594     mxf_write_local_tag(pb, 16, 0x4803);
 595     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 596 }
 597
 598 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 };
 599
 600 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 601 {
 602     MXFContext *mxf = s->priv_data;
 603     ByteIOContext *pb = s->pb;
 604
 605     // find data define uls
 606     mxf_write_local_tag(pb, 16, 0x0201);
 607     if (st == mxf->timecode_track)
 608         put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
 609     else {
 610         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 611         put_buffer(pb, data_def_ul->uid, 16);
 612     }
 613
 614     // write duration
 615     mxf_write_local_tag(pb, 8, 0x0202);
 616     put_be64(pb, mxf->duration);
 617 }
 618
 619 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 620 {
 621     MXFContext *mxf = s->priv_data;
 622     ByteIOContext *pb = s->pb;
 623     enum MXFMetadataSetType component;
 624
 625     mxf_write_metadata_key(pb, 0x010f00);
 626     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 627     klv_encode_ber_length(pb, 80);
 628
 629     mxf_write_local_tag(pb, 16, 0x3C0A);
 630     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 631
 632     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 633     mxf_write_common_fields(s, st);
 634
 635     // write structural component
 636     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 637     mxf_write_refs_count(pb, 1);
 638     if (st == mxf->timecode_track)
 639         component = TimecodeComponent;
 640     else if (type == MaterialPackage)
 641         component = SourceClip;
 642     else
 643         component = SourceClip+TypeBottom;
 644     mxf_write_uuid(pb, component, st->index);
 645 }
 646
 647 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st)
 648 {
 649     MXFContext *mxf = s->priv_data;
 650     ByteIOContext *pb = s->pb;
 651
 652     mxf_write_metadata_key(pb, 0x011400);
 653     klv_encode_ber_length(pb, 75);
 654
 655     // UID
 656     mxf_write_local_tag(pb, 16, 0x3C0A);
 657     mxf_write_uuid(pb, TimecodeComponent, st->index);
 658
 659     mxf_write_common_fields(s, st);
 660
 661     // Start Time Code
 662     mxf_write_local_tag(pb, 8, 0x1501);
 663     put_be64(pb, mxf->timecode_start);
 664
 665     // Rounded Time Code Base
 666     mxf_write_local_tag(pb, 2, 0x1502);
 667     put_be16(pb, mxf->timecode_base);
 668
 669     // Drop Frame
 670     mxf_write_local_tag(pb, 1, 0x1503);
 671     put_byte(pb, mxf->timecode_drop_frame);
 672 }
 673
 674 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 675 {
 676     ByteIOContext *pb = s->pb;
 677     int i;
 678
 679     mxf_write_metadata_key(pb, 0x011100);
 680     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 681     klv_encode_ber_length(pb, 108);
 682
 683     // write uid
 684     mxf_write_local_tag(pb, 16, 0x3C0A);
 685     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 686
 687     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 688     mxf_write_common_fields(s, st);
 689
 690     // write start_position
 691     mxf_write_local_tag(pb, 8, 0x1201);
 692     put_be64(pb, 0);
 693
 694     // write source package uid, end of the reference
 695     mxf_write_local_tag(pb, 32, 0x1101);
 696     if (type == SourcePackage) {
 697         for (i = 0; i < 4; i++)
 698             put_be64(pb, 0);
 699     } else
 700         mxf_write_umid(pb, SourcePackage, 0);
 701
 702     // write source track id
 703     mxf_write_local_tag(pb, 4, 0x1102);
 704     if (type == SourcePackage)
 705         put_be32(pb, 0);
 706     else
 707         put_be32(pb, st->index);
 708 }
 709
 710 static void mxf_write_multi_descriptor(AVFormatContext *s)
 711 {
 712     MXFContext *mxf = s->priv_data;
 713     ByteIOContext *pb = s->pb;
 714     const uint8_t *ul;
 715     int i;
 716
 717     mxf_write_metadata_key(pb, 0x014400);
 718     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 719     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
 720
 721     mxf_write_local_tag(pb, 16, 0x3C0A);
 722     mxf_write_uuid(pb, MultipleDescriptor, 0);
 723     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 724
 725     // write sample rate
 726     mxf_write_local_tag(pb, 8, 0x3001);
 727     put_be32(pb, mxf->time_base.den);
 728     put_be32(pb, mxf->time_base.num);
 729
 730     // write essence container ul
 731     mxf_write_local_tag(pb, 16, 0x3004);
 732     if (mxf->essence_container_count > 1)
 733         ul = multiple_desc_ul;
 734     else {
 735         MXFStreamContext *sc = s->streams[0]->priv_data;
 736         ul = mxf_essence_container_uls[sc->index].container_ul;
 737     }
 738     put_buffer(pb, ul, 16);
 739
 740     // write sub descriptor refs
 741     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 742     mxf_write_refs_count(pb, s->nb_streams);
 743     for (i = 0; i < s->nb_streams; i++)
 744         mxf_write_uuid(pb, SubDescriptor, i);
 745 }
 746
 747 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 748 {
 749     MXFContext *mxf = s->priv_data;
 750     MXFStreamContext *sc = st->priv_data;
 751     ByteIOContext *pb = s->pb;
 752
 753     put_buffer(pb, key, 16);
 754     klv_encode_ber_length(pb, size+20+8+12+20);
 755
 756     mxf_write_local_tag(pb, 16, 0x3C0A);
 757     mxf_write_uuid(pb, SubDescriptor, st->index);
 758
 759     mxf_write_local_tag(pb, 4, 0x3006);
 760     put_be32(pb, st->index);
 761
 762     mxf_write_local_tag(pb, 8, 0x3001);
 763     put_be32(pb, mxf->time_base.den);
 764     put_be32(pb, mxf->time_base.num);
 765
 766     mxf_write_local_tag(pb, 16, 0x3004);
 767     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 768 }
 769
 770 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
 771 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
 772 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
 773 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
 774 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
 775
 776 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 777 {
 778     MXFStreamContext *sc = st->priv_data;
 779     ByteIOContext *pb = s->pb;
 780     int stored_height = (st->codec->height+15)/16*16;
 781     int display_height;
 782     int f1, f2;
 783
 784     mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
 785
 786     mxf_write_local_tag(pb, 4, 0x3203);
 787     put_be32(pb, st->codec->width);
 788
 789     mxf_write_local_tag(pb, 4, 0x3202);
 790     put_be32(pb, stored_height>>sc->interlaced);
 791
 792     mxf_write_local_tag(pb, 4, 0x3209);
 793     put_be32(pb, st->codec->width);
 794
 795     if (st->codec->height == 608) // PAL + VBI
 796         display_height = 576;
 797     else if (st->codec->height == 512)  // NTSC + VBI
 798         display_height = 486;
 799     else
 800         display_height = st->codec->height;
 801
 802     mxf_write_local_tag(pb, 4, 0x3208);
 803     put_be32(pb, display_height>>sc->interlaced);
 804
 805     // component depth
 806     mxf_write_local_tag(pb, 4, 0x3301);
 807     put_be32(pb, 8);
 808
 809     // horizontal subsampling
 810     mxf_write_local_tag(pb, 4, 0x3302);
 811     put_be32(pb, 2);
 812
 813     // frame layout
 814     mxf_write_local_tag(pb, 1, 0x320C);
 815     put_byte(pb, sc->interlaced);
 816
 817     // video line map
 818     switch (st->codec->height) {
 819     case  576: f1 = 23; f2 = 336; break;
 820     case  608: f1 =  7; f2 = 320; break;
 821     case  480: f1 = 20; f2 = 283; break;
 822     case  512: f1 =  7; f2 = 270; break;
 823     case  720: f1 = 26; f2 =   0; break; // progressive
 824     case 1080: f1 = 21; f2 = 584; break;
 825     default:   f1 =  0; f2 =   0; break;
 826     }
 827
 828     if (!sc->interlaced) {
 829         f2  = 0;
 830         f1 *= 2;
 831     }
 832
 833     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
 834     put_be32(pb, sc->interlaced ? 2 : 1);
 835     put_be32(pb, 4);
 836     put_be32(pb, f1);
 837     if (sc->interlaced)
 838         put_be32(pb, f2);
 839
 840     mxf_write_local_tag(pb, 8, 0x320E);
 841     put_be32(pb, sc->aspect_ratio.num);
 842     put_be32(pb, sc->aspect_ratio.den);
 843
 844     mxf_write_local_tag(pb, 16, 0x3201);
 845     put_buffer(pb, *sc->codec_ul, 16);
 846 }
 847
 848 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
 849 {
 850     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
 851 }
 852
 853 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
 854 {
 855     ByteIOContext *pb = s->pb;
 856
 857     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8);
 858
 859     // bit rate
 860     mxf_write_local_tag(pb, 4, 0x8000);
 861     put_be32(pb, st->codec->bit_rate);
 862 }
 863
 864 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 865 {
 866     ByteIOContext *pb = s->pb;
 867
 868     mxf_write_generic_desc(s, st, key, size+5+12+8+8);
 869
 870     // audio locked
 871     mxf_write_local_tag(pb, 1, 0x3D02);
 872     put_byte(pb, 1);
 873
 874     // write audio sampling rate
 875     mxf_write_local_tag(pb, 8, 0x3D03);
 876     put_be32(pb, st->codec->sample_rate);
 877     put_be32(pb, 1);
 878
 879     mxf_write_local_tag(pb, 4, 0x3D07);
 880     put_be32(pb, st->codec->channels);
 881
 882     mxf_write_local_tag(pb, 4, 0x3D01);
 883     put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
 884 }
 885
 886 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 887 {
 888     ByteIOContext *pb = s->pb;
 889
 890     mxf_write_generic_sound_common(s, st, key, size+6+8);
 891
 892     mxf_write_local_tag(pb, 2, 0x3D0A);
 893     put_be16(pb, st->codec->block_align);
 894
 895     // avg bytes per sec
 896     mxf_write_local_tag(pb, 4, 0x3D09);
 897     put_be32(pb, st->codec->block_align*st->codec->sample_rate);
 898 }
 899
 900 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
 901 {
 902     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
 903 }
 904
 905 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
 906 {
 907     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
 908 }
 909
 910 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
 911 {
 912     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
 913 }
 914
 915 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
 916 {
 917     MXFContext *mxf = s->priv_data;
 918     ByteIOContext *pb = s->pb;
 919     int i, track_count;
 920
 921     if (type == MaterialPackage) {
 922         track_count = s->nb_streams + 1; // add timecode track
 923         mxf_write_metadata_key(pb, 0x013600);
 924         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
 925         klv_encode_ber_length(pb, 92 + 16*track_count);
 926     } else {
 927         track_count = s->nb_streams;
 928         mxf_write_metadata_key(pb, 0x013700);
 929         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
 930         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
 931     }
 932
 933     // write uid
 934     mxf_write_local_tag(pb, 16, 0x3C0A);
 935     mxf_write_uuid(pb, type, 0);
 936     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
 937     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
 938
 939     // write package umid
 940     mxf_write_local_tag(pb, 32, 0x4401);
 941     mxf_write_umid(pb, type, 0);
 942     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
 943
 944     // package creation date
 945     mxf_write_local_tag(pb, 8, 0x4405);
 946     put_be64(pb, mxf->timestamp);
 947
 948     // package modified date
 949     mxf_write_local_tag(pb, 8, 0x4404);
 950     put_be64(pb, mxf->timestamp);
 951
 952     // write track refs
 953     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
 954     mxf_write_refs_count(pb, track_count);
 955     for (i = 0; i < s->nb_streams; i++)
 956         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
 957     if (type == MaterialPackage)
 958         mxf_write_uuid(pb, Track, s->nb_streams); // timecode track
 959
 960     // write multiple descriptor reference
 961     if (type == SourcePackage) {
 962         mxf_write_local_tag(pb, 16, 0x4701);
 963         if (s->nb_streams > 1) {
 964             mxf_write_uuid(pb, MultipleDescriptor, 0);
 965             mxf_write_multi_descriptor(s);
 966         } else
 967             mxf_write_uuid(pb, SubDescriptor, 0);
 968     } else {
 969         // write timecode track
 970         mxf_write_track(s, mxf->timecode_track, type);
 971         mxf_write_sequence(s, mxf->timecode_track, type);
 972         mxf_write_timecode_component(s, mxf->timecode_track);
 973     }
 974
 975     for (i = 0; i < s->nb_streams; i++) {
 976         AVStream *st = s->streams[i];
 977         mxf_write_track(s, st, type);
 978         mxf_write_sequence(s, st, type);
 979         mxf_write_structural_component(s, st, type);
 980
 981         if (type == SourcePackage) {
 982             MXFStreamContext *sc = st->priv_data;
 983             mxf_essence_container_uls[sc->index].write_desc(s, st);
 984         }
 985     }
 986 }
 987
 988 static int mxf_write_essence_container_data(AVFormatContext *s)
 989 {
 990     ByteIOContext *pb = s->pb;
 991
 992     mxf_write_metadata_key(pb, 0x012300);
 993     klv_encode_ber_length(pb, 72);
 994
 995     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
 996     mxf_write_uuid(pb, EssenceContainerData, 0);
 997
 998     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
 999     mxf_write_umid(pb, SourcePackage, 0);
1000
1001     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1002     put_be32(pb, 1);
1003
1004     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1005     put_be32(pb, 2);
1006
1007     return 0;
1008 }
1009
1010 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1011 {
1012     mxf_write_preface(s);
1013     mxf_write_identification(s);
1014     mxf_write_content_storage(s);
1015     mxf_write_package(s, MaterialPackage);
1016     mxf_write_package(s, SourcePackage);
1017     mxf_write_essence_container_data(s);
1018     return 0;
1019 }
1020
1021 static unsigned klv_fill_size(uint64_t size)
1022 {
1023     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1024     if (pad < 20) // smallest fill item possible
1025         return pad + KAG_SIZE;
1026     else
1027         return pad & (KAG_SIZE-1);
1028 }
1029
1030 static void mxf_write_index_table_segment(AVFormatContext *s)
1031 {
1032     MXFContext *mxf = s->priv_data;
1033     ByteIOContext *pb = s->pb;
1034     int i, j;
1035     int temporal_reordering = 0;
1036     int key_index = mxf->last_key_index;
1037
1038     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1039
1040     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1041         return;
1042
1043     put_buffer(pb, index_table_segment_key, 16);
1044
1045     if (mxf->edit_unit_byte_count) {
1046         klv_encode_ber_length(pb, 85);
1047     } else {
1048         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1049                               12+mxf->edit_units_count*(11+mxf->slice_count*4));
1050     }
1051
1052     // instance id
1053     mxf_write_local_tag(pb, 16, 0x3C0A);
1054     mxf_write_uuid(pb, IndexTableSegment, 0);
1055
1056     // index edit rate
1057     mxf_write_local_tag(pb, 8, 0x3F0B);
1058     put_be32(pb, mxf->time_base.num);
1059     put_be32(pb, mxf->time_base.den);
1060
1061     // index start position
1062     mxf_write_local_tag(pb, 8, 0x3F0C);
1063     put_be64(pb, mxf->last_indexed_edit_unit);
1064
1065     // index duration
1066     mxf_write_local_tag(pb, 8, 0x3F0D);
1067     put_be64(pb, mxf->edit_units_count);
1068
1069     // edit unit byte count
1070     mxf_write_local_tag(pb, 4, 0x3F05);
1071     put_be32(pb, mxf->edit_unit_byte_count);
1072
1073     // index sid
1074     mxf_write_local_tag(pb, 4, 0x3F06);
1075     put_be32(pb, 2);
1076
1077     // body sid
1078     mxf_write_local_tag(pb, 4, 0x3F07);
1079     put_be32(pb, 1);
1080
1081     // real slice count - 1
1082     mxf_write_local_tag(pb, 1, 0x3F08);
1083     put_byte(pb, mxf->slice_count);
1084
1085     if (!mxf->edit_unit_byte_count) {
1086         // delta entry array
1087         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1088         put_be32(pb, s->nb_streams+1); // num of entries
1089         put_be32(pb, 6);               // size of one entry
1090         // write system item delta entry
1091         put_byte(pb, 0);
1092         put_byte(pb, 0); // slice entry
1093         put_be32(pb, 0); // element delta
1094         for (i = 0; i < s->nb_streams; i++) {
1095             AVStream *st = s->streams[i];
1096             MXFStreamContext *sc = st->priv_data;
1097             put_byte(pb, sc->temporal_reordering);
1098             if (sc->temporal_reordering)
1099                 temporal_reordering = 1;
1100             if (i == 0) { // video track
1101                 put_byte(pb, 0); // slice number
1102                 put_be32(pb, KAG_SIZE); // system item size including klv fill
1103             } else { // audio track
1104                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1105                 audio_frame_size += klv_fill_size(audio_frame_size);
1106                 put_byte(pb, 1);
1107                 put_be32(pb, (i-1)*audio_frame_size); // element delta
1108             }
1109         }
1110
1111         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1112         put_be32(pb, mxf->edit_units_count);  // num of entries
1113         put_be32(pb, 11+mxf->slice_count*4);  // size of one entry
1114         for (i = 0; i < mxf->edit_units_count; i++) {
1115             if (temporal_reordering) {
1116                 int temporal_offset = 0;
1117                 for (j = i+1; j < mxf->edit_units_count; j++) {
1118                     temporal_offset++;
1119                     if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1120                         // next is not b, so is reordered
1121                         if (!(mxf->index_entries[i+1].flags & 0x10)) {
1122                             if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
1123                                 temporal_offset = 0;
1124                             else
1125                                 temporal_offset = -temporal_offset;
1126                         }
1127                         break;
1128                     }
1129                 }
1130                 put_byte(pb, temporal_offset);
1131             } else
1132                 put_byte(pb, 0);
1133             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1134                 mxf->last_key_index = key_index;
1135                 key_index = i;
1136             }
1137             if (mxf->index_entries[i].flags & 0x10 && // backward prediction
1138                 !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
1139                 put_byte(pb, mxf->last_key_index - i);
1140             } else {
1141                 put_byte(pb, key_index - i); // key frame offset
1142                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1143                     mxf->last_key_index = key_index;
1144             }
1145             put_byte(pb, mxf->index_entries[i].flags);
1146             // stream offset
1147             put_be64(pb, mxf->index_entries[i].offset);
1148             if (s->nb_streams > 1)
1149                 put_be32(pb, mxf->index_entries[i].slice_offset);
1150         }
1151
1152         mxf->last_key_index = key_index - mxf->edit_units_count;
1153         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1154         mxf->edit_units_count = 0;
1155     }
1156 }
1157
1158 static void mxf_write_klv_fill(AVFormatContext *s)
1159 {
1160     unsigned pad = klv_fill_size(url_ftell(s->pb));
1161     if (pad) {
1162         put_buffer(s->pb, klv_fill_key, 16);
1163         pad -= 16 + 4;
1164         klv_encode_ber4_length(s->pb, pad);
1165         for (; pad; pad--)
1166             put_byte(s->pb, 0);
1167         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1168     }
1169 }
1170
1171 static void mxf_write_partition(AVFormatContext *s, int bodysid,
1172                                 int indexsid,
1173                                 const uint8_t *key, int write_metadata)
1174 {
1175     MXFContext *mxf = s->priv_data;
1176     ByteIOContext *pb = s->pb;
1177     int64_t header_byte_count_offset;
1178     unsigned index_byte_count = 0;
1179     uint64_t partition_offset = url_ftell(pb);
1180
1181     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1182         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1183             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1184     else if (mxf->edit_unit_byte_count && indexsid)
1185         index_byte_count = 85;
1186
1187     if (index_byte_count) {
1188         // add encoded ber length
1189         index_byte_count += 16 + klv_ber_length(index_byte_count);
1190         index_byte_count += klv_fill_size(index_byte_count);
1191     }
1192
1193     if (!memcmp(key, body_partition_key, 16)) {
1194         mxf->body_partition_offset =
1195             av_realloc(mxf->body_partition_offset,
1196                        (mxf->body_partitions_count+1)*
1197                        sizeof(*mxf->body_partition_offset));
1198         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1199     }
1200
1201     // write klv
1202     put_buffer(pb, key, 16);
1203     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1204
1205     // write partition value
1206     put_be16(pb, 1); // majorVersion
1207     put_be16(pb, 2); // minorVersion
1208     put_be32(pb, KAG_SIZE); // KAGSize
1209
1210     put_be64(pb, partition_offset); // ThisPartition
1211
1212     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1213         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1214     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1215         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1216     else
1217         put_be64(pb, 0);
1218
1219     put_be64(pb, mxf->footer_partition_offset); // footerPartition
1220
1221     // set offset
1222     header_byte_count_offset = url_ftell(pb);
1223     put_be64(pb, 0); // headerByteCount, update later
1224
1225     // indexTable
1226     put_be64(pb, index_byte_count); // indexByteCount
1227     put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1228
1229     // BodyOffset
1230     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1231         put_be64(pb, mxf->body_offset);
1232     } else
1233         put_be64(pb, 0);
1234
1235     put_be32(pb, bodysid); // bodySID
1236
1237     // operational pattern
1238     if (s->nb_streams > 1) {
1239         put_buffer(pb, op1a_ul, 14);
1240         put_be16(pb, 0x0900); // multi track
1241     } else {
1242         put_buffer(pb, op1a_ul, 16);
1243     }
1244
1245     // essence container
1246     mxf_write_essence_container_refs(s);
1247
1248     if (write_metadata) {
1249         // mark the start of the headermetadata and calculate metadata size
1250         int64_t pos, start;
1251         unsigned header_byte_count;
1252
1253         mxf_write_klv_fill(s);
1254         start = url_ftell(s->pb);
1255         mxf_write_primer_pack(s);
1256         mxf_write_header_metadata_sets(s);
1257         pos = url_ftell(s->pb);
1258         header_byte_count = pos - start + klv_fill_size(pos);
1259
1260         // update header_byte_count
1261         url_fseek(pb, header_byte_count_offset, SEEK_SET);
1262         put_be64(pb, header_byte_count);
1263         url_fseek(pb, pos, SEEK_SET);
1264     }
1265
1266     put_flush_packet(pb);
1267 }
1268
1269 static const UID mxf_mpeg2_codec_uls[] = {
1270     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1271     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1272     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1273     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1274     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1275     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1276     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1277     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1278 };
1279
1280 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1281 {
1282     if (avctx->profile == 4) { // Main
1283         if (avctx->level == 8) // Main
1284             return avctx->gop_size ?
1285                 &mxf_mpeg2_codec_uls[1] :
1286                 &mxf_mpeg2_codec_uls[0];
1287         else if (avctx->level == 4) // High
1288             return avctx->gop_size ?
1289                 &mxf_mpeg2_codec_uls[5] :
1290                 &mxf_mpeg2_codec_uls[4];
1291     } else if (avctx->profile == 0) { // 422
1292         if (avctx->level == 5) // Main
1293             return avctx->gop_size ?
1294                 &mxf_mpeg2_codec_uls[3] :
1295                 &mxf_mpeg2_codec_uls[2];
1296         else if (avctx->level == 2) // High
1297             return avctx->gop_size ?
1298                 &mxf_mpeg2_codec_uls[7] :
1299                 &mxf_mpeg2_codec_uls[6];
1300     }
1301     return NULL;
1302 }
1303
1304 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1305 {
1306     MXFStreamContext *sc = st->priv_data;
1307     MXFContext *mxf = s->priv_data;
1308     uint32_t c = -1;
1309     int i;
1310
1311     *flags = 0;
1312
1313     for(i = 0; i < pkt->size - 4; i++) {
1314         c = (c<<8) + pkt->data[i];
1315         if (c == 0x1B5) {
1316             if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1317                 st->codec->profile = pkt->data[i+1] & 0x07;
1318                 st->codec->level   = pkt->data[i+2] >> 4;
1319             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1320                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1321                 break;
1322             }
1323         } else if (c == 0x1b8) { // gop
1324             if (i + 4 < pkt->size) {
1325                 if (pkt->data[i+4]>>6 & 0x01) // closed
1326                     *flags |= 0x80; // random access
1327                 if (!mxf->header_written) {
1328                     unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1329                     unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1330                     unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1331                     unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1332                     mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1333                     mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1334                         mxf->timecode_base + frames;
1335                     if (mxf->timecode_drop_frame) {
1336                         unsigned tminutes = 60 * hours + minutes;
1337                         mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1338                     }
1339                     av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1340                            hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1341                 }
1342             }
1343         } else if (c == 0x1b3) { // seq
1344             *flags |= 0x40;
1345             if (i + 4 < pkt->size) {
1346                 switch ((pkt->data[i+4]>>4) & 0xf) {
1347                 case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1348                 case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1349                 case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1350                 default:
1351                     av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1352                               st->codec->width, st->codec->height, 1024*1024);
1353                 }
1354             }
1355         } else if (c == 0x100) { // pic
1356             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1357             if (pict_type == 2) { // P frame
1358                 *flags |= 0x22;
1359                 st->codec->gop_size = 1;
1360             } else if (pict_type == 3) { // B frame
1361                 *flags |= 0x33;
1362                 sc->temporal_reordering = -1;
1363             } else if (!pict_type) {
1364                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1365                 return 0;
1366             }
1367         }
1368     }
1369     if (s->oformat != &mxf_d10_muxer)
1370         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1371     return !!sc->codec_ul;
1372 }
1373
1374 static uint64_t mxf_parse_timestamp(time_t timestamp)
1375 {
1376     struct tm *time = localtime(&timestamp);
1377     return (uint64_t)(time->tm_year+1900) << 48 |
1378            (uint64_t)(time->tm_mon+1)     << 40 |
1379            (uint64_t) time->tm_mday       << 32 |
1380                       time->tm_hour       << 24 |
1381                       time->tm_min        << 16 |
1382                       time->tm_sec        << 8;
1383 }
1384
1385 static int mxf_write_header(AVFormatContext *s)
1386 {
1387     MXFContext *mxf = s->priv_data;
1388     int i;
1389     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1390     const int *samples_per_frame = NULL;
1391
1392     for (i = 0; i < s->nb_streams; i++) {
1393         AVStream *st = s->streams[i];
1394         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1395         if (!sc)
1396             return AVERROR(ENOMEM);
1397         st->priv_data = sc;
1398
1399         if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1400             if (i != 0) {
1401                 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1402                 return -1;
1403             }
1404             if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1405                 samples_per_frame = PAL_samples_per_frame;
1406                 mxf->time_base = (AVRational){ 1, 25 };
1407                 mxf->timecode_base = 25;
1408             } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1409                 samples_per_frame = NTSC_samples_per_frame;
1410                 mxf->time_base = (AVRational){ 1001, 30000 };
1411                 mxf->timecode_base = 30;
1412             } else {
1413                 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1414                 return -1;
1415             }
1416             av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1417             if (s->oformat == &mxf_d10_muxer) {
1418                 if (st->codec->bit_rate == 50000000)
1419                     if (mxf->time_base.den == 25) sc->index = 3;
1420                     else                          sc->index = 5;
1421                 else if (st->codec->bit_rate == 40000000)
1422                     if (mxf->time_base.den == 25) sc->index = 7;
1423                     else                          sc->index = 9;
1424                 else if (st->codec->bit_rate == 30000000)
1425                     if (mxf->time_base.den == 25) sc->index = 11;
1426                     else                          sc->index = 13;
1427                 else {
1428                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1429                     return -1;
1430                 }
1431
1432                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1433                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1434                     mxf->time_base.num / (8*mxf->time_base.den);
1435                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1436                 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1437                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1438             }
1439         } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1440             if (st->codec->sample_rate != 48000) {
1441                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1442                 return -1;
1443             }
1444             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1445             if (s->oformat == &mxf_d10_muxer) {
1446                 if (st->index != 1) {
1447                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1448                     return -1;
1449                 }
1450                 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1451                     st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1452                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1453                 }
1454                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1455             } else
1456             mxf->slice_count = 1;
1457         }
1458
1459         if (!sc->index) {
1460             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1461             if (sc->index == -1) {
1462                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1463                        "codec not currently supported in container\n", i);
1464                 return -1;
1465             }
1466         }
1467
1468         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1469
1470         if (!present[sc->index]) {
1471             present[sc->index] = 1;
1472             mxf->essence_container_count++;
1473         } else
1474             present[sc->index]++;
1475
1476         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1477         sc->track_essence_element_key[15] = present[sc->index];
1478         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1479     }
1480
1481     if (s->oformat == &mxf_d10_muxer) {
1482         mxf->essence_container_count = 1;
1483     }
1484
1485     for (i = 0; i < s->nb_streams; i++) {
1486         MXFStreamContext *sc = s->streams[i]->priv_data;
1487         // update element count
1488         sc->track_essence_element_key[13] = present[sc->index];
1489         sc->order = AV_RB32(sc->track_essence_element_key+12);
1490     }
1491
1492     mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1493     mxf->duration = -1;
1494
1495     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1496     if (!mxf->timecode_track)
1497         return AVERROR(ENOMEM);
1498     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1499     if (!mxf->timecode_track->priv_data)
1500         return AVERROR(ENOMEM);
1501     mxf->timecode_track->index = s->nb_streams;
1502
1503     if (!samples_per_frame)
1504         samples_per_frame = PAL_samples_per_frame;
1505
1506     if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1507         return -1;
1508
1509     return 0;
1510 }
1511
1512 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1513 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 };
1514
1515 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1516 {
1517     return (0                                    << 31) | // color frame flag
1518            (0                                    << 30) | // drop  frame flag
1519            ( ((frame % fps) / 10)                << 28) | // tens  of frames
1520            ( ((frame % fps) % 10)                << 24) | // units of frames
1521            (0                                    << 23) | // field phase (NTSC), b0 (PAL)
1522            ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
1523            ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
1524            (0                                    << 15) | // b0 (NTSC), b2 (PAL)
1525            ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
1526            ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
1527            (0                                    <<  7) | // b1
1528            (0                                    <<  6) | // b2 (NSC), field phase (PAL)
1529            ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
1530            (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
1531 }
1532
1533 static void mxf_write_system_item(AVFormatContext *s)
1534 {
1535     MXFContext *mxf = s->priv_data;
1536     ByteIOContext *pb = s->pb;
1537     unsigned frame;
1538     uint32_t time_code;
1539
1540     frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1541
1542     // write system metadata pack
1543     put_buffer(pb, system_metadata_pack_key, 16);
1544     klv_encode_ber4_length(pb, 57);
1545     put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1546     put_byte(pb, 0x04); // content package rate
1547     put_byte(pb, 0x00); // content package type
1548     put_be16(pb, 0x00); // channel handle
1549     put_be16(pb, frame); // continuity count
1550     if (mxf->essence_container_count > 1)
1551         put_buffer(pb, multiple_desc_ul, 16);
1552     else {
1553         MXFStreamContext *sc = s->streams[0]->priv_data;
1554         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1555     }
1556     put_byte(pb, 0);
1557     put_be64(pb, 0);
1558     put_be64(pb, 0); // creation date/time stamp
1559
1560     put_byte(pb, 0x81); // SMPTE 12M time code
1561     time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1562     put_be32(pb, time_code);
1563     put_be32(pb, 0); // binary group data
1564     put_be64(pb, 0);
1565
1566     // write system metadata package set
1567     put_buffer(pb, system_metadata_package_set_key, 16);
1568     klv_encode_ber4_length(pb, 35);
1569     put_byte(pb, 0x83); // UMID
1570     put_be16(pb, 0x20);
1571     mxf_write_umid(pb, SourcePackage, 0);
1572 }
1573
1574 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1575 {
1576     MXFContext *mxf = s->priv_data;
1577     ByteIOContext *pb = s->pb;
1578     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1579         (8*mxf->time_base.den); // frame size
1580     int pad;
1581
1582     packet_size += 16 + 4;
1583     packet_size += klv_fill_size(packet_size);
1584
1585     klv_encode_ber4_length(pb, pkt->size);
1586     put_buffer(pb, pkt->data, pkt->size);
1587
1588     // ensure CBR muxing by padding to correct video frame size
1589     pad = packet_size - pkt->size - 16 - 4;
1590     if (pad > 20) {
1591         put_buffer(s->pb, klv_fill_key, 16);
1592         pad -= 16 + 4;
1593         klv_encode_ber4_length(s->pb, pad);
1594         for (; pad; pad--)
1595             put_byte(s->pb, 0);
1596         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1597     } else {
1598         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1599         for (; pad > 0; pad--)
1600             put_byte(s->pb, 0);
1601     }
1602 }
1603
1604 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1605 {
1606     MXFContext *mxf = s->priv_data;
1607     ByteIOContext *pb = s->pb;
1608     int frame_size = (pkt->size<<3) /
1609         (st->codec->channels*av_get_bits_per_sample(st->codec->codec_id));
1610     uint8_t *samples = pkt->data;
1611     uint8_t *end = pkt->data + pkt->size;
1612     int i;
1613
1614     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1615
1616     put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1617     put_le16(pb, frame_size);
1618     put_byte(pb, (1<<st->codec->channels)-1);
1619
1620     while (samples < end) {
1621         for (i = 0; i < st->codec->channels; i++) {
1622             uint32_t sample;
1623             if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1624                 sample = (AV_RL24(samples)<< 4)|((samples==pkt->data)<<3) | i;
1625                 samples += 3;
1626             } else {
1627                 sample = (AV_RL16(samples)<<12)|((samples==pkt->data)<<3) | i;
1628                 samples += 2;
1629             }
1630             put_le32(pb, sample);
1631         }
1632         for (; i < 8; i++)
1633             put_le32(pb, 0);
1634     }
1635 }
1636
1637 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1638 {
1639     MXFContext *mxf = s->priv_data;
1640     ByteIOContext *pb = s->pb;
1641     AVStream *st = s->streams[pkt->stream_index];
1642     MXFStreamContext *sc = st->priv_data;
1643     int flags = 0;
1644
1645     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1646         mxf->index_entries = av_realloc(mxf->index_entries,
1647             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1648         if (!mxf->index_entries) {
1649             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1650             return -1;
1651         }
1652     }
1653
1654     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1655         if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1656             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1657             return -1;
1658         }
1659     }
1660
1661     if (!mxf->header_written) {
1662         if (mxf->edit_unit_byte_count) {
1663             mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1664             mxf_write_klv_fill(s);
1665             mxf_write_index_table_segment(s);
1666         } else {
1667             mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1668         }
1669         mxf->header_written = 1;
1670     }
1671
1672     if (st->index == 0) {
1673         if (!mxf->edit_unit_byte_count &&
1674             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1675             !(flags & 0x33)) { // I frame, Gop start
1676             mxf_write_klv_fill(s);
1677             mxf_write_partition(s, 1, 2, body_partition_key, 0);
1678
1679             mxf_write_klv_fill(s);
1680             mxf_write_index_table_segment(s);
1681         }
1682
1683         mxf_write_klv_fill(s);
1684         mxf_write_system_item(s);
1685
1686         if (!mxf->edit_unit_byte_count) {
1687             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1688             mxf->index_entries[mxf->edit_units_count].flags = flags;
1689             mxf->body_offset += KAG_SIZE; // size of system element
1690         }
1691         mxf->edit_units_count++;
1692     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
1693         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1694             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1695     }
1696
1697     mxf_write_klv_fill(s);
1698     put_buffer(pb, sc->track_essence_element_key, 16); // write key
1699     if (s->oformat == &mxf_d10_muxer) {
1700         if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1701             mxf_write_d10_video_packet(s, st, pkt);
1702         else
1703             mxf_write_d10_audio_packet(s, st, pkt);
1704     } else {
1705         klv_encode_ber4_length(pb, pkt->size); // write length
1706         put_buffer(pb, pkt->data, pkt->size);
1707         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1708     }
1709
1710     put_flush_packet(pb);
1711
1712     return 0;
1713 }
1714
1715 static void mxf_write_random_index_pack(AVFormatContext *s)
1716 {
1717     MXFContext *mxf = s->priv_data;
1718     ByteIOContext *pb = s->pb;
1719     uint64_t pos = url_ftell(pb);
1720     int i;
1721
1722     put_buffer(pb, random_index_pack_key, 16);
1723     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1724
1725     if (mxf->edit_unit_byte_count)
1726         put_be32(pb, 1); // BodySID of header partition
1727     else
1728         put_be32(pb, 0); // BodySID of header partition
1729     put_be64(pb, 0); // offset of header partition
1730
1731     for (i = 0; i < mxf->body_partitions_count; i++) {
1732         put_be32(pb, 1); // BodySID
1733         put_be64(pb, mxf->body_partition_offset[i]);
1734     }
1735
1736     put_be32(pb, 0); // BodySID of footer partition
1737     put_be64(pb, mxf->footer_partition_offset);
1738
1739     put_be32(pb, url_ftell(pb) - pos + 4);
1740 }
1741
1742 static int mxf_write_footer(AVFormatContext *s)
1743 {
1744     MXFContext *mxf = s->priv_data;
1745     ByteIOContext *pb = s->pb;
1746
1747     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1748
1749     mxf_write_klv_fill(s);
1750     mxf->footer_partition_offset = url_ftell(pb);
1751     if (mxf->edit_unit_byte_count) { // no need to repeat index
1752         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1753     } else {
1754         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1755
1756         mxf_write_klv_fill(s);
1757         mxf_write_index_table_segment(s);
1758     }
1759
1760     mxf_write_klv_fill(s);
1761     mxf_write_random_index_pack(s);
1762
1763     if (!url_is_streamed(s->pb)) {
1764         url_fseek(pb, 0, SEEK_SET);
1765         if (mxf->edit_unit_byte_count) {
1766             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1767             mxf_write_klv_fill(s);
1768             mxf_write_index_table_segment(s);
1769         } else {
1770             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1771         }
1772     }
1773
1774     ff_audio_interleave_close(s);
1775
1776     av_freep(&mxf->index_entries);
1777     av_freep(&mxf->body_partition_offset);
1778     av_freep(&mxf->timecode_track->priv_data);
1779     av_freep(&mxf->timecode_track);
1780
1781     mxf_free(s);
1782
1783     return 0;
1784 }
1785
1786 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1787 {
1788     AVPacketList *pktl;
1789     int stream_count = 0;
1790     int streams[MAX_STREAMS];
1791
1792     memset(streams, 0, sizeof(streams));
1793     pktl = s->packet_buffer;
1794     while (pktl) {
1795         //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1796         if (!streams[pktl->pkt.stream_index])
1797             stream_count++;
1798         streams[pktl->pkt.stream_index]++;
1799         pktl = pktl->next;
1800     }
1801
1802     if (stream_count && (s->nb_streams == stream_count || flush)) {
1803         pktl = s->packet_buffer;
1804         if (s->nb_streams != stream_count) {
1805             AVPacketList *last = NULL;
1806             // find last packet in edit unit
1807             while (pktl) {
1808                 if (!stream_count || pktl->pkt.stream_index == 0)
1809                     break;
1810                 last = pktl;
1811                 pktl = pktl->next;
1812                 stream_count--;
1813             }
1814             // purge packet queue
1815             while (pktl) {
1816                 AVPacketList *next = pktl->next;
1817                 av_free_packet(&pktl->pkt);
1818                 av_freep(&pktl);
1819                 pktl = next;
1820             }
1821             if (last)
1822                 last->next = NULL;
1823             else {
1824                 s->packet_buffer = NULL;
1825                 goto out;
1826             }
1827             pktl = s->packet_buffer;
1828         }
1829
1830         *out = pktl->pkt;
1831         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1832         s->packet_buffer = pktl->next;
1833         av_freep(&pktl);
1834         return 1;
1835     } else {
1836     out:
1837         av_init_packet(out);
1838         return 0;
1839     }
1840 }
1841
1842 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1843 {
1844     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1845     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1846
1847     return next->dts > pkt->dts ||
1848         (next->dts == pkt->dts && sc->order < sc2->order);
1849 }
1850
1851 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1852 {
1853     return ff_audio_rechunk_interleave(s, out, pkt, flush,
1854                                mxf_interleave_get_packet, mxf_compare_timestamps);
1855 }
1856
1857 AVOutputFormat mxf_muxer = {
1858     "mxf",
1859     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1860     "application/mxf",
1861     "mxf",
1862     sizeof(MXFContext),
1863     CODEC_ID_PCM_S16LE,
1864     CODEC_ID_MPEG2VIDEO,
1865     mxf_write_header,
1866     mxf_write_packet,
1867     mxf_write_footer,
1868     AVFMT_NOTIMESTAMPS,
1869     NULL,
1870     mxf_interleave,
1871 };
1872
1873 AVOutputFormat mxf_d10_muxer = {
1874     "mxf_d10",
1875     NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1876     "application/mxf",
1877     NULL,
1878     sizeof(MXFContext),
1879     CODEC_ID_PCM_S16LE,
1880     CODEC_ID_MPEG2VIDEO,
1881     mxf_write_header,
1882     mxf_write_packet,
1883     mxf_write_footer,
1884     AVFMT_NOTIMESTAMPS,
1885     NULL,
1886     mxf_interleave,
1887 };