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 "libavutil/random_seed.h"
  40 #include "libavcodec/bytestream.h"
  41 #include "audiointerleave.h"
  42 #include "avformat.h"
  43 #include "mxf.h"
  44
  45 static const int NTSC_samples_per_frame[] = { 1602, 1601, 1602, 1601, 1602, 0 };
  46 static const int PAL_samples_per_frame[]  = { 1920, 0 };
  47
  48 AVOutputFormat mxf_d10_muxer;
  49
  50 #define EDIT_UNITS_PER_BODY 250
  51 #define KAG_SIZE 512
  52
  53 typedef struct {
  54     int local_tag;
  55     UID uid;
  56 } MXFLocalTagPair;
  57
  58 typedef struct {
  59     uint8_t flags;
  60     uint64_t offset;
  61     unsigned slice_offset; ///< offset of audio slice
  62 } MXFIndexEntry;
  63
  64 typedef struct {
  65     AudioInterleaveContext aic;
  66     UID track_essence_element_key;
  67     int index;            ///< index in mxf_essence_container_uls table
  68     const UID *codec_ul;
  69     int order;            ///< interleaving order if dts are equal
  70     int interlaced;       ///< wether picture is interlaced
  71     int temporal_reordering;
  72     AVRational aspect_ratio; ///< display aspect ratio
  73 } MXFStreamContext;
  74
  75 typedef struct {
  76     UID container_ul;
  77     UID element_ul;
  78     UID codec_ul;
  79     void (*write_desc)();
  80 } MXFContainerEssenceEntry;
  81
  82 static const struct {
  83     enum CodecID id;
  84     int index;
  85 } mxf_essence_mappings[] = {
  86     { CODEC_ID_MPEG2VIDEO, 0 },
  87     { CODEC_ID_PCM_S24LE,  1 },
  88     { CODEC_ID_PCM_S16LE,  1 },
  89     { 0 }
  90 };
  91
  92 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
  93 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
  94 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
  95 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
  96 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
  97
  98 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
  99     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
 100       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
 101       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 102       mxf_write_mpegvideo_desc },
 103     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 104       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 105       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 106       mxf_write_aes3_desc },
 107     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 108       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 109       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 110       mxf_write_wav_desc },
 111     // D-10 625/50 PAL 50mb/s
 112     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 113       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 114       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 115       mxf_write_cdci_desc },
 116     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 117       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 118       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 119       mxf_write_generic_sound_desc },
 120     // D-10 525/60 NTSC 50mb/s
 121     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 122       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 123       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 124       mxf_write_cdci_desc },
 125     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 126       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 127       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 128       mxf_write_generic_sound_desc },
 129     // D-10 625/50 PAL 40mb/s
 130     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 131       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 132       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 133       mxf_write_cdci_desc },
 134     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 135       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 136       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 137       mxf_write_generic_sound_desc },
 138     // D-10 525/60 NTSC 40mb/s
 139     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 140       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 141       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 142       mxf_write_cdci_desc },
 143     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 144       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 145       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 146       mxf_write_generic_sound_desc },
 147     // D-10 625/50 PAL 30mb/s
 148     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 149       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 150       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 151       mxf_write_cdci_desc },
 152     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 153       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 154       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 155       mxf_write_generic_sound_desc },
 156     // D-10 525/60 NTSC 30mb/s
 157     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 158       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 159       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 160       mxf_write_cdci_desc },
 161     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 162       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 163       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 164       mxf_write_generic_sound_desc },
 165     { { 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       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 168       NULL },
 169 };
 170
 171 typedef struct MXFContext {
 172     int64_t footer_partition_offset;
 173     int essence_container_count;
 174     AVRational time_base;
 175     int header_written;
 176     MXFIndexEntry *index_entries;
 177     unsigned edit_units_count;
 178     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 179     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 180     int last_indexed_edit_unit;
 181     uint64_t *body_partition_offset;
 182     unsigned body_partitions_count;
 183     int last_key_index;  ///< index of last key frame
 184     uint64_t duration;
 185     AVStream *timecode_track;
 186     int timecode_base;       ///< rounded time code base (25 or 30)
 187     int timecode_start;      ///< frame number computed from mpeg-2 gop header timecode
 188     int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
 189     int edit_unit_byte_count; ///< fixed edit unit byte count
 190     uint64_t body_offset;
 191     uint32_t instance_number;
 192     uint8_t umid[16];        ///< unique material identifier
 193 } MXFContext;
 194
 195 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 196 static const uint8_t umid_ul[]              = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13 };
 197
 198 /**
 199  * complete key for operation pattern, partitions, and primer pack
 200  */
 201 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x09,0x00 };
 202 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 203 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 204 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 205 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 206 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
 207 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
 208 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 209 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 210
 211 /**
 212  * partial key for header metadata
 213  */
 214 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 215 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 216
 217 /**
 218  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 219  */
 220 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 221     // preface set
 222     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 223     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 224     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 225     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 226     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 227     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 228     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 229     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 230     // Identification
 231     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 232     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 233     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 234     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 235     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 236     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 237     // Content Storage
 238     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 239     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 240     // Essence Container Data
 241     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 242     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 243     // Package
 244     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 245     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 246     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 247     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 248     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 249     // Track
 250     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 251     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 252     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 253     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 254     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 255     // Sequence
 256     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 257     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 258     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 259     // Source Clip
 260     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 261     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 262     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 263     // Timecode Component
 264     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 265     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 266     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 267     // File Descriptor
 268     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 269     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 270     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 271     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 272     // Generic Picture Essence Descriptor
 273     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 274     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 275     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 276     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 277     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 278     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 279     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 280     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 281     // CDCI Picture Essence Descriptor
 282     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 283     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 284     // Generic Sound Essence Descriptor
 285     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 286     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 287     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 288     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 289     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 290     // Index Table Segment
 291     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 292     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 293     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 294     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 295     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 296     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 297     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 298     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 299     // MPEG video Descriptor
 300     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 301     // Wave Audio Essence Descriptor
 302     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 303     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 304 };
 305
 306 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
 307 {
 308     put_buffer(pb, uuid_base, 12);
 309     put_be16(pb, type);
 310     put_be16(pb, value);
 311 }
 312
 313 static void mxf_write_umid(AVFormatContext *s, int type)
 314 {
 315     MXFContext *mxf = s->priv_data;
 316     put_buffer(s->pb, umid_ul, 13);
 317     put_be24(s->pb, mxf->instance_number);
 318     put_buffer(s->pb, mxf->umid, 15);
 319     put_byte(s->pb, type);
 320 }
 321
 322 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
 323 {
 324     put_be32(pb, ref_count);
 325     put_be32(pb, 16);
 326 }
 327
 328 static int klv_ber_length(uint64_t len)
 329 {
 330     if (len < 128)
 331         return 1;
 332     else
 333         return (av_log2(len) >> 3) + 2;
 334 }
 335
 336 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
 337 {
 338     // Determine the best BER size
 339     int size;
 340     if (len < 128) {
 341         //short form
 342         put_byte(pb, len);
 343         return 1;
 344     }
 345
 346     size = (av_log2(len) >> 3) + 1;
 347
 348     // long form
 349     put_byte(pb, 0x80 + size);
 350     while(size) {
 351         size--;
 352         put_byte(pb, len >> 8 * size & 0xff);
 353     }
 354     return 0;
 355 }
 356
 357 static void klv_encode_ber4_length(ByteIOContext *pb, int len)
 358 {
 359     put_byte(pb, 0x80 + 3);
 360     put_be24(pb, len);
 361 }
 362
 363 /*
 364  * Get essence container ul index
 365  */
 366 static int mxf_get_essence_container_ul_index(enum CodecID id)
 367 {
 368     int i;
 369     for (i = 0; mxf_essence_mappings[i].id; i++)
 370         if (mxf_essence_mappings[i].id == id)
 371             return mxf_essence_mappings[i].index;
 372     return -1;
 373 }
 374
 375 static void mxf_write_primer_pack(AVFormatContext *s)
 376 {
 377     ByteIOContext *pb = s->pb;
 378     int local_tag_number, i = 0;
 379
 380     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 381
 382     put_buffer(pb, primer_pack_key, 16);
 383     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 384
 385     put_be32(pb, local_tag_number); // local_tag num
 386     put_be32(pb, 18); // item size, always 18 according to the specs
 387
 388     for (i = 0; i < local_tag_number; i++) {
 389         put_be16(pb, mxf_local_tag_batch[i].local_tag);
 390         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
 391     }
 392 }
 393
 394 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
 395 {
 396     put_be16(pb, tag);
 397     put_be16(pb, size);
 398 }
 399
 400 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
 401 {
 402     put_buffer(pb, header_metadata_key, 13);
 403     put_be24(pb, value);
 404 }
 405
 406 static void mxf_free(AVFormatContext *s)
 407 {
 408     int i;
 409
 410     for (i = 0; i < s->nb_streams; i++) {
 411         AVStream *st = s->streams[i];
 412         av_freep(&st->priv_data);
 413     }
 414 }
 415
 416 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 417 {
 418     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 419     while (uls->uid[0]) {
 420         if (type == uls->id)
 421             break;
 422         uls++;
 423     }
 424     return uls;
 425 }
 426
 427 static void mxf_write_essence_container_refs(AVFormatContext *s)
 428 {
 429     MXFContext *c = s->priv_data;
 430     ByteIOContext *pb = s->pb;
 431     int i;
 432
 433     mxf_write_refs_count(pb, c->essence_container_count);
 434     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 435     for (i = 0; i < c->essence_container_count; i++) {
 436         MXFStreamContext *sc = s->streams[i]->priv_data;
 437         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 438     }
 439 }
 440
 441 static void mxf_write_preface(AVFormatContext *s)
 442 {
 443     MXFContext *mxf = s->priv_data;
 444     ByteIOContext *pb = s->pb;
 445
 446     mxf_write_metadata_key(pb, 0x012f00);
 447     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 448     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
 449
 450     // write preface set uid
 451     mxf_write_local_tag(pb, 16, 0x3C0A);
 452     mxf_write_uuid(pb, Preface, 0);
 453     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 454
 455     // last modified date
 456     mxf_write_local_tag(pb, 8, 0x3B02);
 457     put_be64(pb, mxf->timestamp);
 458
 459     // write version
 460     mxf_write_local_tag(pb, 2, 0x3B05);
 461     put_be16(pb, 258); // v1.2
 462
 463     // write identification_refs
 464     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 465     mxf_write_refs_count(pb, 1);
 466     mxf_write_uuid(pb, Identification, 0);
 467
 468     // write content_storage_refs
 469     mxf_write_local_tag(pb, 16, 0x3B03);
 470     mxf_write_uuid(pb, ContentStorage, 0);
 471
 472     // operational pattern
 473     mxf_write_local_tag(pb, 16, 0x3B09);
 474     put_buffer(pb, op1a_ul, 16);
 475
 476     // write essence_container_refs
 477     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
 478     mxf_write_essence_container_refs(s);
 479
 480     // write dm_scheme_refs
 481     mxf_write_local_tag(pb, 8, 0x3B0B);
 482     put_be64(pb, 0);
 483 }
 484
 485 /*
 486  * Write a local tag containing an ascii string as utf-16
 487  */
 488 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
 489 {
 490     int i, size = strlen(value);
 491     mxf_write_local_tag(pb, size*2, tag);
 492     for (i = 0; i < size; i++)
 493         put_be16(pb, value[i]);
 494 }
 495
 496 static void mxf_write_identification(AVFormatContext *s)
 497 {
 498     MXFContext *mxf = s->priv_data;
 499     ByteIOContext *pb = s->pb;
 500     const char *company = "FFmpeg";
 501     const char *product = "OP1a Muxer";
 502     const char *version;
 503     int length;
 504
 505     mxf_write_metadata_key(pb, 0x013000);
 506     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 507
 508     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
 509         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 510     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
 511     klv_encode_ber_length(pb, length);
 512
 513     // write uid
 514     mxf_write_local_tag(pb, 16, 0x3C0A);
 515     mxf_write_uuid(pb, Identification, 0);
 516     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 517
 518     // write generation uid
 519     mxf_write_local_tag(pb, 16, 0x3C09);
 520     mxf_write_uuid(pb, Identification, 1);
 521
 522     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 523     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 524     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 525
 526     // write product uid
 527     mxf_write_local_tag(pb, 16, 0x3C05);
 528     mxf_write_uuid(pb, Identification, 2);
 529
 530     // modification date
 531     mxf_write_local_tag(pb, 8, 0x3C06);
 532     put_be64(pb, mxf->timestamp);
 533 }
 534
 535 static void mxf_write_content_storage(AVFormatContext *s)
 536 {
 537     ByteIOContext *pb = s->pb;
 538
 539     mxf_write_metadata_key(pb, 0x011800);
 540     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 541     klv_encode_ber_length(pb, 92);
 542
 543     // write uid
 544     mxf_write_local_tag(pb, 16, 0x3C0A);
 545     mxf_write_uuid(pb, ContentStorage, 0);
 546     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 547
 548     // write package reference
 549     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 550     mxf_write_refs_count(pb, 2);
 551     mxf_write_uuid(pb, MaterialPackage, 0);
 552     mxf_write_uuid(pb, SourcePackage, 0);
 553
 554     // write essence container data
 555     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 556     mxf_write_refs_count(pb, 1);
 557     mxf_write_uuid(pb, EssenceContainerData, 0);
 558 }
 559
 560 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 561 {
 562     MXFContext *mxf = s->priv_data;
 563     ByteIOContext *pb = s->pb;
 564     MXFStreamContext *sc = st->priv_data;
 565
 566     mxf_write_metadata_key(pb, 0x013b00);
 567     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 568     klv_encode_ber_length(pb, 80);
 569
 570     // write track uid
 571     mxf_write_local_tag(pb, 16, 0x3C0A);
 572     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 573     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 574
 575     // write track id
 576     mxf_write_local_tag(pb, 4, 0x4801);
 577     put_be32(pb, st->index+2);
 578
 579     // write track number
 580     mxf_write_local_tag(pb, 4, 0x4804);
 581     if (type == MaterialPackage)
 582         put_be32(pb, 0); // track number of material package is 0
 583     else
 584         put_buffer(pb, sc->track_essence_element_key + 12, 4);
 585
 586     mxf_write_local_tag(pb, 8, 0x4B01);
 587     put_be32(pb, mxf->time_base.den);
 588     put_be32(pb, mxf->time_base.num);
 589
 590     // write origin
 591     mxf_write_local_tag(pb, 8, 0x4B02);
 592     put_be64(pb, 0);
 593
 594     // write sequence refs
 595     mxf_write_local_tag(pb, 16, 0x4803);
 596     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 597 }
 598
 599 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 };
 600
 601 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 602 {
 603     MXFContext *mxf = s->priv_data;
 604     ByteIOContext *pb = s->pb;
 605
 606     // find data define uls
 607     mxf_write_local_tag(pb, 16, 0x0201);
 608     if (st == mxf->timecode_track)
 609         put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
 610     else {
 611         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 612         put_buffer(pb, data_def_ul->uid, 16);
 613     }
 614
 615     // write duration
 616     mxf_write_local_tag(pb, 8, 0x0202);
 617     put_be64(pb, mxf->duration);
 618 }
 619
 620 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 621 {
 622     MXFContext *mxf = s->priv_data;
 623     ByteIOContext *pb = s->pb;
 624     enum MXFMetadataSetType component;
 625
 626     mxf_write_metadata_key(pb, 0x010f00);
 627     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 628     klv_encode_ber_length(pb, 80);
 629
 630     mxf_write_local_tag(pb, 16, 0x3C0A);
 631     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 632
 633     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 634     mxf_write_common_fields(s, st);
 635
 636     // write structural component
 637     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 638     mxf_write_refs_count(pb, 1);
 639     if (st == mxf->timecode_track)
 640         component = TimecodeComponent;
 641     else
 642         component = SourceClip;
 643     if (type == SourcePackage)
 644         component += TypeBottom;
 645     mxf_write_uuid(pb, component, st->index);
 646 }
 647
 648 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 649 {
 650     MXFContext *mxf = s->priv_data;
 651     ByteIOContext *pb = s->pb;
 652
 653     mxf_write_metadata_key(pb, 0x011400);
 654     klv_encode_ber_length(pb, 75);
 655
 656     // UID
 657     mxf_write_local_tag(pb, 16, 0x3C0A);
 658     mxf_write_uuid(pb, type == MaterialPackage ? TimecodeComponent :
 659                    TimecodeComponent + TypeBottom, st->index);
 660
 661     mxf_write_common_fields(s, st);
 662
 663     // Start Time Code
 664     mxf_write_local_tag(pb, 8, 0x1501);
 665     put_be64(pb, mxf->timecode_start);
 666
 667     // Rounded Time Code Base
 668     mxf_write_local_tag(pb, 2, 0x1502);
 669     put_be16(pb, mxf->timecode_base);
 670
 671     // Drop Frame
 672     mxf_write_local_tag(pb, 1, 0x1503);
 673     put_byte(pb, mxf->timecode_drop_frame);
 674 }
 675
 676 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 677 {
 678     ByteIOContext *pb = s->pb;
 679     int i;
 680
 681     mxf_write_metadata_key(pb, 0x011100);
 682     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 683     klv_encode_ber_length(pb, 108);
 684
 685     // write uid
 686     mxf_write_local_tag(pb, 16, 0x3C0A);
 687     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 688
 689     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 690     mxf_write_common_fields(s, st);
 691
 692     // write start_position
 693     mxf_write_local_tag(pb, 8, 0x1201);
 694     put_be64(pb, 0);
 695
 696     // write source package uid, end of the reference
 697     mxf_write_local_tag(pb, 32, 0x1101);
 698     if (type == SourcePackage) {
 699         for (i = 0; i < 4; i++)
 700             put_be64(pb, 0);
 701     } else
 702         mxf_write_umid(s, 1);
 703
 704     // write source track id
 705     mxf_write_local_tag(pb, 4, 0x1102);
 706     if (type == SourcePackage)
 707         put_be32(pb, 0);
 708     else
 709         put_be32(pb, st->index+2);
 710 }
 711
 712 static void mxf_write_multi_descriptor(AVFormatContext *s)
 713 {
 714     MXFContext *mxf = s->priv_data;
 715     ByteIOContext *pb = s->pb;
 716     const uint8_t *ul;
 717     int i;
 718
 719     mxf_write_metadata_key(pb, 0x014400);
 720     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 721     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
 722
 723     mxf_write_local_tag(pb, 16, 0x3C0A);
 724     mxf_write_uuid(pb, MultipleDescriptor, 0);
 725     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 726
 727     // write sample rate
 728     mxf_write_local_tag(pb, 8, 0x3001);
 729     put_be32(pb, mxf->time_base.den);
 730     put_be32(pb, mxf->time_base.num);
 731
 732     // write essence container ul
 733     mxf_write_local_tag(pb, 16, 0x3004);
 734     if (mxf->essence_container_count > 1)
 735         ul = multiple_desc_ul;
 736     else {
 737         MXFStreamContext *sc = s->streams[0]->priv_data;
 738         ul = mxf_essence_container_uls[sc->index].container_ul;
 739     }
 740     put_buffer(pb, ul, 16);
 741
 742     // write sub descriptor refs
 743     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 744     mxf_write_refs_count(pb, s->nb_streams);
 745     for (i = 0; i < s->nb_streams; i++)
 746         mxf_write_uuid(pb, SubDescriptor, i);
 747 }
 748
 749 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 750 {
 751     MXFContext *mxf = s->priv_data;
 752     MXFStreamContext *sc = st->priv_data;
 753     ByteIOContext *pb = s->pb;
 754
 755     put_buffer(pb, key, 16);
 756     klv_encode_ber_length(pb, size+20+8+12+20);
 757
 758     mxf_write_local_tag(pb, 16, 0x3C0A);
 759     mxf_write_uuid(pb, SubDescriptor, st->index);
 760
 761     mxf_write_local_tag(pb, 4, 0x3006);
 762     put_be32(pb, st->index+2);
 763
 764     mxf_write_local_tag(pb, 8, 0x3001);
 765     put_be32(pb, mxf->time_base.den);
 766     put_be32(pb, mxf->time_base.num);
 767
 768     mxf_write_local_tag(pb, 16, 0x3004);
 769     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 770 }
 771
 772 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
 773 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
 774 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
 775 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
 776 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
 777
 778 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 779 {
 780     MXFStreamContext *sc = st->priv_data;
 781     ByteIOContext *pb = s->pb;
 782     int stored_height = (st->codec->height+15)/16*16;
 783     int display_height;
 784     int f1, f2;
 785
 786     mxf_write_generic_desc(s, st, key, size+8+8+8+8+8+8+5+16+sc->interlaced*4+12+20);
 787
 788     mxf_write_local_tag(pb, 4, 0x3203);
 789     put_be32(pb, st->codec->width);
 790
 791     mxf_write_local_tag(pb, 4, 0x3202);
 792     put_be32(pb, stored_height>>sc->interlaced);
 793
 794     mxf_write_local_tag(pb, 4, 0x3209);
 795     put_be32(pb, st->codec->width);
 796
 797     if (st->codec->height == 608) // PAL + VBI
 798         display_height = 576;
 799     else if (st->codec->height == 512)  // NTSC + VBI
 800         display_height = 486;
 801     else
 802         display_height = st->codec->height;
 803
 804     mxf_write_local_tag(pb, 4, 0x3208);
 805     put_be32(pb, display_height>>sc->interlaced);
 806
 807     // component depth
 808     mxf_write_local_tag(pb, 4, 0x3301);
 809     put_be32(pb, 8);
 810
 811     // horizontal subsampling
 812     mxf_write_local_tag(pb, 4, 0x3302);
 813     put_be32(pb, 2);
 814
 815     // frame layout
 816     mxf_write_local_tag(pb, 1, 0x320C);
 817     put_byte(pb, sc->interlaced);
 818
 819     // video line map
 820     switch (st->codec->height) {
 821     case  576: f1 = 23; f2 = 336; break;
 822     case  608: f1 =  7; f2 = 320; break;
 823     case  480: f1 = 20; f2 = 283; break;
 824     case  512: f1 =  7; f2 = 270; break;
 825     case  720: f1 = 26; f2 =   0; break; // progressive
 826     case 1080: f1 = 21; f2 = 584; break;
 827     default:   f1 =  0; f2 =   0; break;
 828     }
 829
 830     if (!sc->interlaced) {
 831         f2  = 0;
 832         f1 *= 2;
 833     }
 834
 835     mxf_write_local_tag(pb, 12+sc->interlaced*4, 0x320D);
 836     put_be32(pb, sc->interlaced ? 2 : 1);
 837     put_be32(pb, 4);
 838     put_be32(pb, f1);
 839     if (sc->interlaced)
 840         put_be32(pb, f2);
 841
 842     mxf_write_local_tag(pb, 8, 0x320E);
 843     put_be32(pb, sc->aspect_ratio.num);
 844     put_be32(pb, sc->aspect_ratio.den);
 845
 846     mxf_write_local_tag(pb, 16, 0x3201);
 847     put_buffer(pb, *sc->codec_ul, 16);
 848 }
 849
 850 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
 851 {
 852     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 0);
 853 }
 854
 855 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
 856 {
 857     ByteIOContext *pb = s->pb;
 858
 859     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 8);
 860
 861     // bit rate
 862     mxf_write_local_tag(pb, 4, 0x8000);
 863     put_be32(pb, st->codec->bit_rate);
 864 }
 865
 866 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 867 {
 868     ByteIOContext *pb = s->pb;
 869
 870     mxf_write_generic_desc(s, st, key, size+5+12+8+8);
 871
 872     // audio locked
 873     mxf_write_local_tag(pb, 1, 0x3D02);
 874     put_byte(pb, 1);
 875
 876     // write audio sampling rate
 877     mxf_write_local_tag(pb, 8, 0x3D03);
 878     put_be32(pb, st->codec->sample_rate);
 879     put_be32(pb, 1);
 880
 881     mxf_write_local_tag(pb, 4, 0x3D07);
 882     put_be32(pb, st->codec->channels);
 883
 884     mxf_write_local_tag(pb, 4, 0x3D01);
 885     put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
 886 }
 887
 888 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 889 {
 890     ByteIOContext *pb = s->pb;
 891
 892     mxf_write_generic_sound_common(s, st, key, size+6+8);
 893
 894     mxf_write_local_tag(pb, 2, 0x3D0A);
 895     put_be16(pb, st->codec->block_align);
 896
 897     // avg bytes per sec
 898     mxf_write_local_tag(pb, 4, 0x3D09);
 899     put_be32(pb, st->codec->block_align*st->codec->sample_rate);
 900 }
 901
 902 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
 903 {
 904     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 0);
 905 }
 906
 907 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
 908 {
 909     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 0);
 910 }
 911
 912 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
 913 {
 914     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 0);
 915 }
 916
 917 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
 918 {
 919     MXFContext *mxf = s->priv_data;
 920     ByteIOContext *pb = s->pb;
 921     int i, track_count = s->nb_streams+1;
 922
 923     if (type == MaterialPackage) {
 924         mxf_write_metadata_key(pb, 0x013600);
 925         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
 926         klv_encode_ber_length(pb, 92 + 16*track_count);
 927     } else {
 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(s, type == SourcePackage);
 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     mxf_write_uuid(pb, type == MaterialPackage ? Track :
 956                    Track + TypeBottom, -1); // timecode track
 957     for (i = 0; i < s->nb_streams; i++)
 958         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
 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     }
 969
 970     // write timecode track
 971     mxf_write_track(s, mxf->timecode_track, type);
 972     mxf_write_sequence(s, mxf->timecode_track, type);
 973     mxf_write_timecode_component(s, mxf->timecode_track, type);
 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(s, 1);
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, 80);
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.den);
1059     put_be32(pb, mxf->time_base.num);
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     if (!mxf->edit_unit_byte_count) {
1082         // real slice count - 1
1083         mxf_write_local_tag(pb, 1, 0x3F08);
1084         put_byte(pb, mxf->slice_count);
1085
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 = 80;
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     put_buffer(pb, op1a_ul, 16);
1239
1240     // essence container
1241     mxf_write_essence_container_refs(s);
1242
1243     if (write_metadata) {
1244         // mark the start of the headermetadata and calculate metadata size
1245         int64_t pos, start;
1246         unsigned header_byte_count;
1247
1248         mxf_write_klv_fill(s);
1249         start = url_ftell(s->pb);
1250         mxf_write_primer_pack(s);
1251         mxf_write_header_metadata_sets(s);
1252         pos = url_ftell(s->pb);
1253         header_byte_count = pos - start + klv_fill_size(pos);
1254
1255         // update header_byte_count
1256         url_fseek(pb, header_byte_count_offset, SEEK_SET);
1257         put_be64(pb, header_byte_count);
1258         url_fseek(pb, pos, SEEK_SET);
1259     }
1260
1261     put_flush_packet(pb);
1262 }
1263
1264 static const UID mxf_mpeg2_codec_uls[] = {
1265     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1266     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1267     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1268     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1269     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1270     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1271     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1272     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1273 };
1274
1275 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1276 {
1277     if (avctx->profile == 4) { // Main
1278         if (avctx->level == 8) // Main
1279             return avctx->gop_size ?
1280                 &mxf_mpeg2_codec_uls[1] :
1281                 &mxf_mpeg2_codec_uls[0];
1282         else if (avctx->level == 4) // High
1283             return avctx->gop_size ?
1284                 &mxf_mpeg2_codec_uls[5] :
1285                 &mxf_mpeg2_codec_uls[4];
1286     } else if (avctx->profile == 0) { // 422
1287         if (avctx->level == 5) // Main
1288             return avctx->gop_size ?
1289                 &mxf_mpeg2_codec_uls[3] :
1290                 &mxf_mpeg2_codec_uls[2];
1291         else if (avctx->level == 2) // High
1292             return avctx->gop_size ?
1293                 &mxf_mpeg2_codec_uls[7] :
1294                 &mxf_mpeg2_codec_uls[6];
1295     }
1296     return NULL;
1297 }
1298
1299 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1300 {
1301     MXFStreamContext *sc = st->priv_data;
1302     MXFContext *mxf = s->priv_data;
1303     uint32_t c = -1;
1304     int i;
1305
1306     *flags = 0;
1307
1308     for(i = 0; i < pkt->size - 4; i++) {
1309         c = (c<<8) + pkt->data[i];
1310         if (c == 0x1B5) {
1311             if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1312                 st->codec->profile = pkt->data[i+1] & 0x07;
1313                 st->codec->level   = pkt->data[i+2] >> 4;
1314             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1315                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1316                 break;
1317             }
1318         } else if (c == 0x1b8) { // gop
1319             if (i + 4 < pkt->size) {
1320                 if (pkt->data[i+4]>>6 & 0x01) // closed
1321                     *flags |= 0x80; // random access
1322                 if (!mxf->header_written) {
1323                     unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1324                     unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1325                     unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1326                     unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1327                     mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1328                     mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1329                         mxf->timecode_base + frames;
1330                     if (mxf->timecode_drop_frame) {
1331                         unsigned tminutes = 60 * hours + minutes;
1332                         mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1333                     }
1334                     av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1335                            hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1336                 }
1337             }
1338         } else if (c == 0x1b3) { // seq
1339             *flags |= 0x40;
1340             if (i + 4 < pkt->size) {
1341                 switch ((pkt->data[i+4]>>4) & 0xf) {
1342                 case 2:  sc->aspect_ratio = (AVRational){  4,  3}; break;
1343                 case 3:  sc->aspect_ratio = (AVRational){ 16,  9}; break;
1344                 case 4:  sc->aspect_ratio = (AVRational){221,100}; break;
1345                 default:
1346                     av_reduce(&sc->aspect_ratio.num, &sc->aspect_ratio.den,
1347                               st->codec->width, st->codec->height, 1024*1024);
1348                 }
1349             }
1350         } else if (c == 0x100) { // pic
1351             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1352             if (pict_type == 2) { // P frame
1353                 *flags |= 0x22;
1354                 st->codec->gop_size = 1;
1355             } else if (pict_type == 3) { // B frame
1356                 *flags |= 0x33;
1357                 sc->temporal_reordering = -1;
1358             } else if (!pict_type) {
1359                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1360                 return 0;
1361             }
1362         }
1363     }
1364     if (s->oformat != &mxf_d10_muxer)
1365         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1366     return !!sc->codec_ul;
1367 }
1368
1369 static uint64_t mxf_parse_timestamp(time_t timestamp)
1370 {
1371     struct tm *time = gmtime(&timestamp);
1372     return (uint64_t)(time->tm_year+1900) << 48 |
1373            (uint64_t)(time->tm_mon+1)     << 40 |
1374            (uint64_t) time->tm_mday       << 32 |
1375                       time->tm_hour       << 24 |
1376                       time->tm_min        << 16 |
1377                       time->tm_sec        << 8;
1378 }
1379
1380 static void mxf_gen_umid(AVFormatContext *s)
1381 {
1382     MXFContext *mxf = s->priv_data;
1383     uint32_t seed = ff_random_get_seed();
1384     uint64_t umid = seed + 0x5294713400000000LL;
1385
1386     AV_WB64(mxf->umid  , umid);
1387     AV_WB64(mxf->umid+8, umid>>8);
1388
1389     mxf->instance_number = seed;
1390 }
1391
1392 static int mxf_write_header(AVFormatContext *s)
1393 {
1394     MXFContext *mxf = s->priv_data;
1395     int i;
1396     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1397     const int *samples_per_frame = NULL;
1398
1399     if (!s->nb_streams)
1400         return -1;
1401
1402     for (i = 0; i < s->nb_streams; i++) {
1403         AVStream *st = s->streams[i];
1404         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1405         if (!sc)
1406             return AVERROR(ENOMEM);
1407         st->priv_data = sc;
1408
1409         if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1410             if (i != 0) {
1411                 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1412                 return -1;
1413             }
1414             if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1415                 samples_per_frame = PAL_samples_per_frame;
1416                 mxf->time_base = (AVRational){ 1, 25 };
1417                 mxf->timecode_base = 25;
1418             } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1419                 samples_per_frame = NTSC_samples_per_frame;
1420                 mxf->time_base = (AVRational){ 1001, 30000 };
1421                 mxf->timecode_base = 30;
1422             } else {
1423                 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1424                 return -1;
1425             }
1426             av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1427             if (s->oformat == &mxf_d10_muxer) {
1428                 if (st->codec->bit_rate == 50000000)
1429                     if (mxf->time_base.den == 25) sc->index = 3;
1430                     else                          sc->index = 5;
1431                 else if (st->codec->bit_rate == 40000000)
1432                     if (mxf->time_base.den == 25) sc->index = 7;
1433                     else                          sc->index = 9;
1434                 else if (st->codec->bit_rate == 30000000)
1435                     if (mxf->time_base.den == 25) sc->index = 11;
1436                     else                          sc->index = 13;
1437                 else {
1438                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1439                     return -1;
1440                 }
1441
1442                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1443                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1444                     mxf->time_base.num / (8*mxf->time_base.den);
1445                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1446                 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1447                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1448             }
1449         } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1450             if (st->codec->sample_rate != 48000) {
1451                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1452                 return -1;
1453             }
1454             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1455             if (s->oformat == &mxf_d10_muxer) {
1456                 if (st->index != 1) {
1457                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1458                     return -1;
1459                 }
1460                 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1461                     st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1462                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1463                 }
1464                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1465             } else
1466             mxf->slice_count = 1;
1467         }
1468
1469         if (!sc->index) {
1470             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1471             if (sc->index == -1) {
1472                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1473                        "codec not currently supported in container\n", i);
1474                 return -1;
1475             }
1476         }
1477
1478         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1479
1480         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1481         sc->track_essence_element_key[15] = present[sc->index];
1482         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1483
1484         if (!present[sc->index])
1485             mxf->essence_container_count++;
1486         present[sc->index]++;
1487     }
1488
1489     if (s->oformat == &mxf_d10_muxer) {
1490         mxf->essence_container_count = 1;
1491     }
1492
1493     if (!(s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT))
1494         mxf_gen_umid(s);
1495
1496     for (i = 0; i < s->nb_streams; i++) {
1497         MXFStreamContext *sc = s->streams[i]->priv_data;
1498         // update element count
1499         sc->track_essence_element_key[13] = present[sc->index];
1500         sc->order = AV_RB32(sc->track_essence_element_key+12);
1501     }
1502
1503     if (s->timestamp)
1504         mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1505     mxf->duration = -1;
1506
1507     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1508     if (!mxf->timecode_track)
1509         return AVERROR(ENOMEM);
1510     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1511     if (!mxf->timecode_track->priv_data)
1512         return AVERROR(ENOMEM);
1513     mxf->timecode_track->index = -1;
1514
1515     if (!samples_per_frame)
1516         samples_per_frame = PAL_samples_per_frame;
1517
1518     if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1519         return -1;
1520
1521     return 0;
1522 }
1523
1524 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1525 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 };
1526
1527 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1528 {
1529     return (0                                    << 31) | // color frame flag
1530            (0                                    << 30) | // drop  frame flag
1531            ( ((frame % fps) / 10)                << 28) | // tens  of frames
1532            ( ((frame % fps) % 10)                << 24) | // units of frames
1533            (0                                    << 23) | // field phase (NTSC), b0 (PAL)
1534            ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
1535            ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
1536            (0                                    << 15) | // b0 (NTSC), b2 (PAL)
1537            ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
1538            ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
1539            (0                                    <<  7) | // b1
1540            (0                                    <<  6) | // b2 (NSC), field phase (PAL)
1541            ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
1542            (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
1543 }
1544
1545 static void mxf_write_system_item(AVFormatContext *s)
1546 {
1547     MXFContext *mxf = s->priv_data;
1548     ByteIOContext *pb = s->pb;
1549     unsigned frame;
1550     uint32_t time_code;
1551
1552     frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1553
1554     // write system metadata pack
1555     put_buffer(pb, system_metadata_pack_key, 16);
1556     klv_encode_ber4_length(pb, 57);
1557     put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1558     put_byte(pb, 0x04); // content package rate
1559     put_byte(pb, 0x00); // content package type
1560     put_be16(pb, 0x00); // channel handle
1561     put_be16(pb, frame); // continuity count
1562     if (mxf->essence_container_count > 1)
1563         put_buffer(pb, multiple_desc_ul, 16);
1564     else {
1565         MXFStreamContext *sc = s->streams[0]->priv_data;
1566         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1567     }
1568     put_byte(pb, 0);
1569     put_be64(pb, 0);
1570     put_be64(pb, 0); // creation date/time stamp
1571
1572     put_byte(pb, 0x81); // SMPTE 12M time code
1573     time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1574     put_be32(pb, time_code);
1575     put_be32(pb, 0); // binary group data
1576     put_be64(pb, 0);
1577
1578     // write system metadata package set
1579     put_buffer(pb, system_metadata_package_set_key, 16);
1580     klv_encode_ber4_length(pb, 35);
1581     put_byte(pb, 0x83); // UMID
1582     put_be16(pb, 0x20);
1583     mxf_write_umid(s, 1);
1584 }
1585
1586 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1587 {
1588     MXFContext *mxf = s->priv_data;
1589     ByteIOContext *pb = s->pb;
1590     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1591         (8*mxf->time_base.den); // frame size
1592     int pad;
1593
1594     packet_size += 16 + 4;
1595     packet_size += klv_fill_size(packet_size);
1596
1597     klv_encode_ber4_length(pb, pkt->size);
1598     put_buffer(pb, pkt->data, pkt->size);
1599
1600     // ensure CBR muxing by padding to correct video frame size
1601     pad = packet_size - pkt->size - 16 - 4;
1602     if (pad > 20) {
1603         put_buffer(s->pb, klv_fill_key, 16);
1604         pad -= 16 + 4;
1605         klv_encode_ber4_length(s->pb, pad);
1606         for (; pad; pad--)
1607             put_byte(s->pb, 0);
1608         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1609     } else {
1610         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1611         for (; pad > 0; pad--)
1612             put_byte(s->pb, 0);
1613     }
1614 }
1615
1616 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1617 {
1618     MXFContext *mxf = s->priv_data;
1619     ByteIOContext *pb = s->pb;
1620     int frame_size = pkt->size / st->codec->block_align;
1621     uint8_t *samples = pkt->data;
1622     uint8_t *end = pkt->data + pkt->size;
1623     int i;
1624
1625     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1626
1627     put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1628     put_le16(pb, frame_size);
1629     put_byte(pb, (1<<st->codec->channels)-1);
1630
1631     while (samples < end) {
1632         for (i = 0; i < st->codec->channels; i++) {
1633             uint32_t sample;
1634             if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1635                 sample = AV_RL24(samples)<< 4;
1636                 samples += 3;
1637             } else {
1638                 sample = AV_RL16(samples)<<12;
1639                 samples += 2;
1640             }
1641             put_le32(pb, sample | i);
1642         }
1643         for (; i < 8; i++)
1644             put_le32(pb, i);
1645     }
1646 }
1647
1648 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1649 {
1650     MXFContext *mxf = s->priv_data;
1651     ByteIOContext *pb = s->pb;
1652     AVStream *st = s->streams[pkt->stream_index];
1653     MXFStreamContext *sc = st->priv_data;
1654     int flags = 0;
1655
1656     if (!mxf->edit_unit_byte_count && !(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1657         mxf->index_entries = av_realloc(mxf->index_entries,
1658             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1659         if (!mxf->index_entries) {
1660             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1661             return -1;
1662         }
1663     }
1664
1665     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1666         if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1667             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1668             return -1;
1669         }
1670     }
1671
1672     if (!mxf->header_written) {
1673         if (mxf->edit_unit_byte_count) {
1674             mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1675             mxf_write_klv_fill(s);
1676             mxf_write_index_table_segment(s);
1677         } else {
1678             mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1679         }
1680         mxf->header_written = 1;
1681     }
1682
1683     if (st->index == 0) {
1684         if (!mxf->edit_unit_byte_count &&
1685             (!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1686             !(flags & 0x33)) { // I frame, Gop start
1687             mxf_write_klv_fill(s);
1688             mxf_write_partition(s, 1, 2, body_partition_key, 0);
1689
1690             mxf_write_klv_fill(s);
1691             mxf_write_index_table_segment(s);
1692         }
1693
1694         mxf_write_klv_fill(s);
1695         mxf_write_system_item(s);
1696
1697         if (!mxf->edit_unit_byte_count) {
1698             mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1699             mxf->index_entries[mxf->edit_units_count].flags = flags;
1700             mxf->body_offset += KAG_SIZE; // size of system element
1701         }
1702         mxf->edit_units_count++;
1703     } else if (!mxf->edit_unit_byte_count && st->index == 1) {
1704         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1705             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1706     }
1707
1708     mxf_write_klv_fill(s);
1709     put_buffer(pb, sc->track_essence_element_key, 16); // write key
1710     if (s->oformat == &mxf_d10_muxer) {
1711         if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1712             mxf_write_d10_video_packet(s, st, pkt);
1713         else
1714             mxf_write_d10_audio_packet(s, st, pkt);
1715     } else {
1716         klv_encode_ber4_length(pb, pkt->size); // write length
1717         put_buffer(pb, pkt->data, pkt->size);
1718         mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1719     }
1720
1721     put_flush_packet(pb);
1722
1723     return 0;
1724 }
1725
1726 static void mxf_write_random_index_pack(AVFormatContext *s)
1727 {
1728     MXFContext *mxf = s->priv_data;
1729     ByteIOContext *pb = s->pb;
1730     uint64_t pos = url_ftell(pb);
1731     int i;
1732
1733     put_buffer(pb, random_index_pack_key, 16);
1734     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1735
1736     if (mxf->edit_unit_byte_count)
1737         put_be32(pb, 1); // BodySID of header partition
1738     else
1739         put_be32(pb, 0);
1740     put_be64(pb, 0); // offset of header partition
1741
1742     for (i = 0; i < mxf->body_partitions_count; i++) {
1743         put_be32(pb, 1); // BodySID
1744         put_be64(pb, mxf->body_partition_offset[i]);
1745     }
1746
1747     put_be32(pb, 0); // BodySID of footer partition
1748     put_be64(pb, mxf->footer_partition_offset);
1749
1750     put_be32(pb, url_ftell(pb) - pos + 4);
1751 }
1752
1753 static int mxf_write_footer(AVFormatContext *s)
1754 {
1755     MXFContext *mxf = s->priv_data;
1756     ByteIOContext *pb = s->pb;
1757
1758     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1759
1760     mxf_write_klv_fill(s);
1761     mxf->footer_partition_offset = url_ftell(pb);
1762     if (mxf->edit_unit_byte_count) { // no need to repeat index
1763         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1764     } else {
1765         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1766
1767         mxf_write_klv_fill(s);
1768         mxf_write_index_table_segment(s);
1769     }
1770
1771     mxf_write_klv_fill(s);
1772     mxf_write_random_index_pack(s);
1773
1774     if (!url_is_streamed(s->pb)) {
1775         url_fseek(pb, 0, SEEK_SET);
1776         if (mxf->edit_unit_byte_count) {
1777             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1778             mxf_write_klv_fill(s);
1779             mxf_write_index_table_segment(s);
1780         } else {
1781             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1782         }
1783     }
1784
1785     put_flush_packet(pb);
1786
1787     ff_audio_interleave_close(s);
1788
1789     av_freep(&mxf->index_entries);
1790     av_freep(&mxf->body_partition_offset);
1791     av_freep(&mxf->timecode_track->priv_data);
1792     av_freep(&mxf->timecode_track);
1793
1794     mxf_free(s);
1795
1796     return 0;
1797 }
1798
1799 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1800 {
1801     AVPacketList *pktl;
1802     int stream_count = 0;
1803     int streams[MAX_STREAMS];
1804
1805     memset(streams, 0, sizeof(streams));
1806     pktl = s->packet_buffer;
1807     while (pktl) {
1808         //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1809         if (!streams[pktl->pkt.stream_index])
1810             stream_count++;
1811         streams[pktl->pkt.stream_index]++;
1812         pktl = pktl->next;
1813     }
1814
1815     if (stream_count && (s->nb_streams == stream_count || flush)) {
1816         pktl = s->packet_buffer;
1817         if (s->nb_streams != stream_count) {
1818             AVPacketList *last = NULL;
1819             // find last packet in edit unit
1820             while (pktl) {
1821                 if (!stream_count || pktl->pkt.stream_index == 0)
1822                     break;
1823                 last = pktl;
1824                 pktl = pktl->next;
1825                 stream_count--;
1826             }
1827             // purge packet queue
1828             while (pktl) {
1829                 AVPacketList *next = pktl->next;
1830                 av_free_packet(&pktl->pkt);
1831                 av_freep(&pktl);
1832                 pktl = next;
1833             }
1834             if (last)
1835                 last->next = NULL;
1836             else {
1837                 s->packet_buffer = NULL;
1838                 goto out;
1839             }
1840             pktl = s->packet_buffer;
1841         }
1842
1843         *out = pktl->pkt;
1844         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1845         s->packet_buffer = pktl->next;
1846         av_freep(&pktl);
1847         return 1;
1848     } else {
1849     out:
1850         av_init_packet(out);
1851         return 0;
1852     }
1853 }
1854
1855 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1856 {
1857     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1858     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1859
1860     return next->dts > pkt->dts ||
1861         (next->dts == pkt->dts && sc->order < sc2->order);
1862 }
1863
1864 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1865 {
1866     return ff_audio_rechunk_interleave(s, out, pkt, flush,
1867                                mxf_interleave_get_packet, mxf_compare_timestamps);
1868 }
1869
1870 AVOutputFormat mxf_muxer = {
1871     "mxf",
1872     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1873     "application/mxf",
1874     "mxf",
1875     sizeof(MXFContext),
1876     CODEC_ID_PCM_S16LE,
1877     CODEC_ID_MPEG2VIDEO,
1878     mxf_write_header,
1879     mxf_write_packet,
1880     mxf_write_footer,
1881     AVFMT_NOTIMESTAMPS,
1882     NULL,
1883     mxf_interleave,
1884 };
1885
1886 AVOutputFormat mxf_d10_muxer = {
1887     "mxf_d10",
1888     NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1889     "application/mxf",
1890     NULL,
1891     sizeof(MXFContext),
1892     CODEC_ID_PCM_S16LE,
1893     CODEC_ID_MPEG2VIDEO,
1894     mxf_write_header,
1895     mxf_write_packet,
1896     mxf_write_footer,
1897     AVFMT_NOTIMESTAMPS,
1898     NULL,
1899     mxf_interleave,
1900 };