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 } MXFStreamContext;
  72
  73 typedef struct {
  74     UID container_ul;
  75     UID element_ul;
  76     UID codec_ul;
  77     void (*write_desc)();
  78 } MXFContainerEssenceEntry;
  79
  80 static const struct {
  81     enum CodecID id;
  82     int index;
  83 } mxf_essence_mappings[] = {
  84     { CODEC_ID_MPEG2VIDEO, 0 },
  85     { CODEC_ID_PCM_S24LE,  1 },
  86     { CODEC_ID_PCM_S16LE,  1 },
  87     { 0 }
  88 };
  89
  90 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
  91 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st);
  92 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
  93 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st);
  94 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st);
  95
  96 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
  97     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
  98       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
  99       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
 100       mxf_write_mpegvideo_desc },
 101     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x03,0x00 },
 102       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x03,0x00 },
 103       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 104       mxf_write_aes3_desc },
 105     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
 106       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
 107       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 108       mxf_write_wav_desc },
 109     // D-10 625/50 PAL 50mb/s
 110     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 111       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 112       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 },
 113       mxf_write_cdci_desc },
 114     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x01,0x01 },
 115       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 116       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 117       mxf_write_generic_sound_desc },
 118     // D-10 525/60 NTSC 50mb/s
 119     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 120       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 121       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x02 },
 122       mxf_write_cdci_desc },
 123     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x02,0x01 },
 124       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 125       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 126       mxf_write_generic_sound_desc },
 127     // D-10 625/50 PAL 40mb/s
 128     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 129       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 130       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x03 },
 131       mxf_write_cdci_desc },
 132     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x03,0x01 },
 133       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 134       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 135       mxf_write_generic_sound_desc },
 136     // D-10 525/60 NTSC 40mb/s
 137     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 138       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 139       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x04 },
 140       mxf_write_cdci_desc },
 141     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x04,0x01 },
 142       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 143       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 144       mxf_write_generic_sound_desc },
 145     // D-10 625/50 PAL 30mb/s
 146     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 147       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 148       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 },
 149       mxf_write_cdci_desc },
 150     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x05,0x01 },
 151       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 152       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 153       mxf_write_generic_sound_desc },
 154     // D-10 525/60 NTSC 30mb/s
 155     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 156       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x05,0x01,0x01,0x00 },
 157       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x06 },
 158       mxf_write_cdci_desc },
 159     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x01,0x06,0x01 },
 160       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x06,0x01,0x10,0x00 },
 161       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
 162       mxf_write_generic_sound_desc },
 163     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
 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       NULL },
 167 };
 168
 169 typedef struct MXFContext {
 170     int64_t footer_partition_offset;
 171     int essence_container_count;
 172     AVRational time_base;
 173     int header_written;
 174     MXFIndexEntry *index_entries;
 175     unsigned edit_units_count;
 176     uint64_t timestamp;   ///< timestamp, as year(16),month(8),day(8),hour(8),minutes(8),msec/4(8)
 177     uint8_t slice_count;  ///< index slice count minus 1 (1 if no audio, 0 otherwise)
 178     int last_indexed_edit_unit;
 179     uint64_t *body_partition_offset;
 180     unsigned body_partitions_count;
 181     int last_key_index;  ///< index of last key frame
 182     uint64_t duration;
 183     AVStream *timecode_track;
 184     int timecode_base;       ///< rounded time code base (25 or 30)
 185     int timecode_start;      ///< frame number computed from mpeg-2 gop header timecode
 186     int timecode_drop_frame; ///< time code use drop frame method frop mpeg-2 essence gop header
 187     int edit_unit_byte_count; ///< fixed edit unit byte count
 188     uint64_t body_offset;
 189 } MXFContext;
 190
 191 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
 192 static const uint8_t umid_base[]            = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };
 193
 194 /**
 195  * complete key for operation pattern, partitions, and primer pack
 196  */
 197 static const uint8_t op1a_ul[]                     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
 198 static const uint8_t footer_partition_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
 199 static const uint8_t primer_pack_key[]             = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
 200 static const uint8_t index_table_segment_key[]     = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x10,0x01,0x00 };
 201 static const uint8_t random_index_pack_key[]       = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x11,0x01,0x00 };
 202 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
 203 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
 204 static const uint8_t klv_fill_key[]                = { 0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x03,0x01,0x02,0x10,0x01,0x00,0x00,0x00 };
 205 static const uint8_t body_partition_key[]          = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x03,0x04,0x00 }; // ClosedComplete
 206
 207 /**
 208  * partial key for header metadata
 209  */
 210 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
 211 static const uint8_t multiple_desc_ul[]     = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 212
 213 /**
 214  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 215  */
 216 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 217     // preface set
 218     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 219     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 220     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 221     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 222     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 223     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 224     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 225     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 226     // Identification
 227     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 228     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 229     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 230     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 231     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 232     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 233     // Content Storage
 234     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 235     { 0x1902, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x02,0x00,0x00}}, /* Package strong reference batch */
 236     // Essence Container Data
 237     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 238     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 239     // Package
 240     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 241     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 242     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 243     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 244     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 245     // Track
 246     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 247     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 248     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 249     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 250     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 251     // Sequence
 252     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 253     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 254     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 255     // Source Clip
 256     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */
 257     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 258     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 259     // Timecode Component
 260     { 0x1501, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x05,0x00,0x00}}, /* Start Time Code */
 261     { 0x1502, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x04,0x01,0x01,0x02,0x06,0x00,0x00}}, /* Rounded Time Code Base */
 262     { 0x1503, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x04,0x01,0x01,0x05,0x00,0x00,0x00}}, /* Drop Frame */
 263     // File Descriptor
 264     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 265     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 266     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 267     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 268     // Generic Picture Essence Descriptor
 269     { 0x320C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Frame Layout */
 270     { 0x320D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x03,0x02,0x05,0x00,0x00,0x00}}, /* Video Line Map */
 271     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 272     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 273     { 0x3209, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0C,0x00,0x00,0x00}}, /* Display Width */
 274     { 0x3208, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x0B,0x00,0x00,0x00}}, /* Display Height */
 275     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 276     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 277     // CDCI Picture Essence Descriptor
 278     { 0x3301, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x05,0x03,0x0A,0x00,0x00,0x00}}, /* Component Depth */
 279     { 0x3302, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x01,0x05,0x00,0x00,0x00}}, /* Horizontal Subsampling */
 280     // Generic Sound Essence Descriptor
 281     { 0x3D02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x01,0x04,0x00,0x00,0x00}}, /* Locked/Unlocked */
 282     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 283     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 284     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 285     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 286     // Index Table Segment
 287     { 0x3F0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x05,0x30,0x04,0x06,0x00,0x00,0x00,0x00}}, /* Index Edit Rate */
 288     { 0x3F0C, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Index Start Position */
 289     { 0x3F0D, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x02,0x01,0x01,0x02,0x00,0x00}}, /* Index Duration */
 290     { 0x3F05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x06,0x02,0x01,0x00,0x00,0x00,0x00}}, /* Edit Unit Byte Count */
 291     { 0x3F06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x05,0x00,0x00,0x00,0x00}}, /* IndexSID */
 292     { 0x3F08, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x04,0x04,0x01,0x01,0x00,0x00,0x00}}, /* Slice Count */
 293     { 0x3F09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x01,0x06,0x00,0x00,0x00}}, /* Delta Entry Array */
 294     { 0x3F0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x04,0x04,0x02,0x05,0x00,0x00,0x00}}, /* Index Entry Array */
 295     // MPEG video Descriptor
 296     { 0x8000, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x01,0x06,0x02,0x01,0x0B,0x00,0x00}}, /* BitRate */
 297     // Wave Audio Essence Descriptor
 298     { 0x3D09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x03,0x05,0x00,0x00,0x00}}, /* Average Bytes Per Second */
 299     { 0x3D0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x02,0x01,0x00,0x00,0x00}}, /* Block Align */
 300 };
 301
 302 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
 303 {
 304     put_buffer(pb, uuid_base, 12);
 305     put_be16(pb, type);
 306     put_be16(pb, value);
 307 }
 308
 309 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
 310 {
 311     put_buffer(pb, umid_base, 16);
 312     mxf_write_uuid(pb, type, value);
 313 }
 314
 315 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
 316 {
 317     put_be32(pb, ref_count);
 318     put_be32(pb, 16);
 319 }
 320
 321 static int klv_ber_length(uint64_t len)
 322 {
 323     if (len < 128)
 324         return 1;
 325     else
 326         return (av_log2(len) >> 3) + 2;
 327 }
 328
 329 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
 330 {
 331     // Determine the best BER size
 332     int size;
 333     if (len < 128) {
 334         //short form
 335         put_byte(pb, len);
 336         return 1;
 337     }
 338
 339     size = (av_log2(len) >> 3) + 1;
 340
 341     // long form
 342     put_byte(pb, 0x80 + size);
 343     while(size) {
 344         size--;
 345         put_byte(pb, len >> 8 * size & 0xff);
 346     }
 347     return 0;
 348 }
 349
 350 static void klv_encode_ber4_length(ByteIOContext *pb, int len)
 351 {
 352     put_byte(pb, 0x80 + 3);
 353     put_be24(pb, len);
 354 }
 355
 356 /*
 357  * Get essence container ul index
 358  */
 359 static int mxf_get_essence_container_ul_index(enum CodecID id)
 360 {
 361     int i;
 362     for (i = 0; mxf_essence_mappings[i].id; i++)
 363         if (mxf_essence_mappings[i].id == id)
 364             return mxf_essence_mappings[i].index;
 365     return -1;
 366 }
 367
 368 static void mxf_write_primer_pack(AVFormatContext *s)
 369 {
 370     ByteIOContext *pb = s->pb;
 371     int local_tag_number, i = 0;
 372
 373     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);
 374
 375     put_buffer(pb, primer_pack_key, 16);
 376     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 377
 378     put_be32(pb, local_tag_number); // local_tag num
 379     put_be32(pb, 18); // item size, always 18 according to the specs
 380
 381     for (i = 0; i < local_tag_number; i++) {
 382         put_be16(pb, mxf_local_tag_batch[i].local_tag);
 383         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
 384     }
 385 }
 386
 387 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
 388 {
 389     put_be16(pb, tag);
 390     put_be16(pb, size);
 391 }
 392
 393 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
 394 {
 395     put_buffer(pb, header_metadata_key, 13);
 396     put_be24(pb, value);
 397 }
 398
 399 static void mxf_free(AVFormatContext *s)
 400 {
 401     int i;
 402
 403     for (i = 0; i < s->nb_streams; i++) {
 404         AVStream *st = s->streams[i];
 405         av_freep(&st->priv_data);
 406     }
 407 }
 408
 409 static const MXFCodecUL *mxf_get_data_definition_ul(int type)
 410 {
 411     const MXFCodecUL *uls = ff_mxf_data_definition_uls;
 412     while (uls->uid[0]) {
 413         if (type == uls->id)
 414             break;
 415         uls++;
 416     }
 417     return uls;
 418 }
 419
 420 static void mxf_write_essence_container_refs(AVFormatContext *s)
 421 {
 422     MXFContext *c = s->priv_data;
 423     ByteIOContext *pb = s->pb;
 424     int i;
 425
 426     mxf_write_refs_count(pb, c->essence_container_count);
 427     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 428     for (i = 0; i < c->essence_container_count; i++) {
 429         MXFStreamContext *sc = s->streams[i]->priv_data;
 430         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 431     }
 432 }
 433
 434 static void mxf_write_preface(AVFormatContext *s)
 435 {
 436     MXFContext *mxf = s->priv_data;
 437     ByteIOContext *pb = s->pb;
 438
 439     mxf_write_metadata_key(pb, 0x012f00);
 440     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 441     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
 442
 443     // write preface set uid
 444     mxf_write_local_tag(pb, 16, 0x3C0A);
 445     mxf_write_uuid(pb, Preface, 0);
 446     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 447
 448     // last modified date
 449     mxf_write_local_tag(pb, 8, 0x3B02);
 450     put_be64(pb, mxf->timestamp);
 451
 452     // write version
 453     mxf_write_local_tag(pb, 2, 0x3B05);
 454     put_be16(pb, 1);
 455
 456     // write identification_refs
 457     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 458     mxf_write_refs_count(pb, 1);
 459     mxf_write_uuid(pb, Identification, 0);
 460
 461     // write content_storage_refs
 462     mxf_write_local_tag(pb, 16, 0x3B03);
 463     mxf_write_uuid(pb, ContentStorage, 0);
 464
 465     // operational pattern
 466     mxf_write_local_tag(pb, 16, 0x3B09);
 467     if (s->nb_streams > 1) {
 468         put_buffer(pb, op1a_ul, 14);
 469         put_be16(pb, 0x0900); // multi track
 470     } else {
 471         put_buffer(pb, op1a_ul, 16);
 472     }
 473
 474     // write essence_container_refs
 475     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
 476     mxf_write_essence_container_refs(s);
 477
 478     // write dm_scheme_refs
 479     mxf_write_local_tag(pb, 8, 0x3B0B);
 480     put_be64(pb, 0);
 481 }
 482
 483 /*
 484  * Write a local tag containing an ascii string as utf-16
 485  */
 486 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
 487 {
 488     int i, size = strlen(value);
 489     mxf_write_local_tag(pb, size*2, tag);
 490     for (i = 0; i < size; i++)
 491         put_be16(pb, value[i]);
 492 }
 493
 494 static void mxf_write_identification(AVFormatContext *s)
 495 {
 496     MXFContext *mxf = s->priv_data;
 497     ByteIOContext *pb = s->pb;
 498     const char *company = "FFmpeg";
 499     const char *product = "OP1a Muxer";
 500     const char *version;
 501     int length;
 502
 503     mxf_write_metadata_key(pb, 0x013000);
 504     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 505
 506     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
 507         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 508     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
 509     klv_encode_ber_length(pb, length);
 510
 511     // write uid
 512     mxf_write_local_tag(pb, 16, 0x3C0A);
 513     mxf_write_uuid(pb, Identification, 0);
 514     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 515
 516     // write generation uid
 517     mxf_write_local_tag(pb, 16, 0x3C09);
 518     mxf_write_uuid(pb, Identification, 1);
 519
 520     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 521     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 522     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 523
 524     // write product uid
 525     mxf_write_local_tag(pb, 16, 0x3C05);
 526     mxf_write_uuid(pb, Identification, 2);
 527
 528     // modification date
 529     mxf_write_local_tag(pb, 8, 0x3C06);
 530     put_be64(pb, mxf->timestamp);
 531 }
 532
 533 static void mxf_write_content_storage(AVFormatContext *s)
 534 {
 535     ByteIOContext *pb = s->pb;
 536
 537     mxf_write_metadata_key(pb, 0x011800);
 538     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 539     klv_encode_ber_length(pb, 92);
 540
 541     // write uid
 542     mxf_write_local_tag(pb, 16, 0x3C0A);
 543     mxf_write_uuid(pb, ContentStorage, 0);
 544     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 545
 546     // write package reference
 547     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 548     mxf_write_refs_count(pb, 2);
 549     mxf_write_uuid(pb, MaterialPackage, 0);
 550     mxf_write_uuid(pb, SourcePackage, 0);
 551
 552     // write essence container data
 553     mxf_write_local_tag(pb, 8 + 16, 0x1902);
 554     mxf_write_refs_count(pb, 1);
 555     mxf_write_uuid(pb, EssenceContainerData, 0);
 556 }
 557
 558 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 559 {
 560     MXFContext *mxf = s->priv_data;
 561     ByteIOContext *pb = s->pb;
 562     MXFStreamContext *sc = st->priv_data;
 563
 564     mxf_write_metadata_key(pb, 0x013b00);
 565     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 566     klv_encode_ber_length(pb, 80);
 567
 568     // write track uid
 569     mxf_write_local_tag(pb, 16, 0x3C0A);
 570     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 571     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 572
 573     // write track id
 574     mxf_write_local_tag(pb, 4, 0x4801);
 575     put_be32(pb, st->index);
 576
 577     // write track number
 578     mxf_write_local_tag(pb, 4, 0x4804);
 579     if (type == MaterialPackage)
 580         put_be32(pb, 0); // track number of material package is 0
 581     else
 582         put_buffer(pb, sc->track_essence_element_key + 12, 4);
 583
 584     mxf_write_local_tag(pb, 8, 0x4B01);
 585     put_be32(pb, mxf->time_base.den);
 586     put_be32(pb, mxf->time_base.num);
 587
 588     // write origin
 589     mxf_write_local_tag(pb, 8, 0x4B02);
 590     put_be64(pb, 0);
 591
 592     // write sequence refs
 593     mxf_write_local_tag(pb, 16, 0x4803);
 594     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 595 }
 596
 597 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 };
 598
 599 static void mxf_write_common_fields(AVFormatContext *s, AVStream *st)
 600 {
 601     MXFContext *mxf = s->priv_data;
 602     ByteIOContext *pb = s->pb;
 603
 604     // find data define uls
 605     mxf_write_local_tag(pb, 16, 0x0201);
 606     if (st == mxf->timecode_track)
 607         put_buffer(pb, smpte_12m_timecode_track_data_ul, 16);
 608     else {
 609         const MXFCodecUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 610         put_buffer(pb, data_def_ul->uid, 16);
 611     }
 612
 613     // write duration
 614     mxf_write_local_tag(pb, 8, 0x0202);
 615     put_be64(pb, mxf->duration);
 616 }
 617
 618 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 619 {
 620     MXFContext *mxf = s->priv_data;
 621     ByteIOContext *pb = s->pb;
 622     enum MXFMetadataSetType component;
 623
 624     mxf_write_metadata_key(pb, 0x010f00);
 625     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 626     klv_encode_ber_length(pb, 80);
 627
 628     mxf_write_local_tag(pb, 16, 0x3C0A);
 629     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 630
 631     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 632     mxf_write_common_fields(s, st);
 633
 634     // write structural component
 635     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 636     mxf_write_refs_count(pb, 1);
 637     if (st == mxf->timecode_track)
 638         component = TimecodeComponent;
 639     else if (type == MaterialPackage)
 640         component = SourceClip;
 641     else
 642         component = SourceClip+TypeBottom;
 643     mxf_write_uuid(pb, component, st->index);
 644 }
 645
 646 static void mxf_write_timecode_component(AVFormatContext *s, AVStream *st)
 647 {
 648     MXFContext *mxf = s->priv_data;
 649     ByteIOContext *pb = s->pb;
 650
 651     mxf_write_metadata_key(pb, 0x011400);
 652     klv_encode_ber_length(pb, 75);
 653
 654     // UID
 655     mxf_write_local_tag(pb, 16, 0x3C0A);
 656     mxf_write_uuid(pb, TimecodeComponent, st->index);
 657
 658     mxf_write_common_fields(s, st);
 659
 660     // Start Time Code
 661     mxf_write_local_tag(pb, 8, 0x1501);
 662     put_be64(pb, mxf->timecode_start);
 663
 664     // Rounded Time Code Base
 665     mxf_write_local_tag(pb, 2, 0x1502);
 666     put_be16(pb, mxf->timecode_base);
 667
 668     // Drop Frame
 669     mxf_write_local_tag(pb, 1, 0x1503);
 670     put_byte(pb, mxf->timecode_drop_frame);
 671 }
 672
 673 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 674 {
 675     ByteIOContext *pb = s->pb;
 676     int i;
 677
 678     mxf_write_metadata_key(pb, 0x011100);
 679     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 680     klv_encode_ber_length(pb, 108);
 681
 682     // write uid
 683     mxf_write_local_tag(pb, 16, 0x3C0A);
 684     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 685
 686     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 687     mxf_write_common_fields(s, st);
 688
 689     // write start_position
 690     mxf_write_local_tag(pb, 8, 0x1201);
 691     put_be64(pb, 0);
 692
 693     // write source package uid, end of the reference
 694     mxf_write_local_tag(pb, 32, 0x1101);
 695     if (type == SourcePackage) {
 696         for (i = 0; i < 4; i++)
 697             put_be64(pb, 0);
 698     } else
 699         mxf_write_umid(pb, SourcePackage, 0);
 700
 701     // write source track id
 702     mxf_write_local_tag(pb, 4, 0x1102);
 703     if (type == SourcePackage)
 704         put_be32(pb, 0);
 705     else
 706         put_be32(pb, st->index);
 707 }
 708
 709 static void mxf_write_multi_descriptor(AVFormatContext *s)
 710 {
 711     MXFContext *mxf = s->priv_data;
 712     ByteIOContext *pb = s->pb;
 713     const uint8_t *ul;
 714     int i;
 715
 716     mxf_write_metadata_key(pb, 0x014400);
 717     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 718     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
 719
 720     mxf_write_local_tag(pb, 16, 0x3C0A);
 721     mxf_write_uuid(pb, MultipleDescriptor, 0);
 722     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 723
 724     // write sample rate
 725     mxf_write_local_tag(pb, 8, 0x3001);
 726     put_be32(pb, mxf->time_base.den);
 727     put_be32(pb, mxf->time_base.num);
 728
 729     // write essence container ul
 730     mxf_write_local_tag(pb, 16, 0x3004);
 731     if (mxf->essence_container_count > 1)
 732         ul = multiple_desc_ul;
 733     else {
 734         MXFStreamContext *sc = s->streams[0]->priv_data;
 735         ul = mxf_essence_container_uls[sc->index].container_ul;
 736     }
 737     put_buffer(pb, ul, 16);
 738
 739     // write sub descriptor refs
 740     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 741     mxf_write_refs_count(pb, s->nb_streams);
 742     for (i = 0; i < s->nb_streams; i++)
 743         mxf_write_uuid(pb, SubDescriptor, i);
 744 }
 745
 746 static void mxf_write_generic_desc(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 747 {
 748     MXFContext *mxf = s->priv_data;
 749     MXFStreamContext *sc = st->priv_data;
 750     ByteIOContext *pb = s->pb;
 751
 752     put_buffer(pb, key, 16);
 753     klv_encode_ber_length(pb, size);
 754
 755     mxf_write_local_tag(pb, 16, 0x3C0A);
 756     mxf_write_uuid(pb, SubDescriptor, st->index);
 757
 758     mxf_write_local_tag(pb, 4, 0x3006);
 759     put_be32(pb, st->index);
 760
 761     mxf_write_local_tag(pb, 8, 0x3001);
 762     put_be32(pb, mxf->time_base.den);
 763     put_be32(pb, mxf->time_base.num);
 764
 765     mxf_write_local_tag(pb, 16, 0x3004);
 766     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 767 }
 768
 769 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
 770 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
 771 static const UID mxf_aes3_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 };
 772 static const UID mxf_cdci_descriptor_key      = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x28,0x00 };
 773 static const UID mxf_generic_sound_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01,0x01,0x42,0x00 };
 774
 775 static void mxf_write_cdci_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 776 {
 777     MXFStreamContext *sc = st->priv_data;
 778     ByteIOContext *pb = s->pb;
 779     int stored_height = (st->codec->height+15)/16*16;
 780     int display_height;
 781     AVRational dar;
 782     int f1, f2;
 783
 784     mxf_write_generic_desc(s, st, key, size);
 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     av_reduce(&dar.num, &dar.den,
 841               st->codec->width*st->codec->sample_aspect_ratio.num,
 842               st->codec->height*st->codec->sample_aspect_ratio.den,
 843               1024*1024);
 844
 845     mxf_write_local_tag(pb, 8, 0x320E);
 846     put_be32(pb, dar.num);
 847     put_be32(pb, dar.den);
 848
 849     mxf_write_local_tag(pb, 16, 0x3201);
 850     put_buffer(pb, *sc->codec_ul, 16);
 851 }
 852
 853 static void mxf_write_cdci_desc(AVFormatContext *s, AVStream *st)
 854 {
 855     MXFStreamContext *sc = st->priv_data;
 856     mxf_write_cdci_common(s, st, mxf_cdci_descriptor_key, 161+sc->interlaced*4);
 857 }
 858
 859 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
 860 {
 861     MXFStreamContext *sc = st->priv_data;
 862     ByteIOContext *pb = s->pb;
 863
 864     mxf_write_cdci_common(s, st, mxf_mpegvideo_descriptor_key, 169+sc->interlaced*4);
 865
 866     // bit rate
 867     mxf_write_local_tag(pb, 4, 0x8000);
 868     put_be32(pb, st->codec->bit_rate);
 869 }
 870
 871 static void mxf_write_generic_sound_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 872 {
 873     ByteIOContext *pb = s->pb;
 874
 875     mxf_write_generic_desc(s, st, key, size);
 876
 877     // audio locked
 878     mxf_write_local_tag(pb, 1, 0x3D02);
 879     put_byte(pb, 1);
 880
 881     // write audio sampling rate
 882     mxf_write_local_tag(pb, 8, 0x3D03);
 883     put_be32(pb, st->codec->sample_rate);
 884     put_be32(pb, 1);
 885
 886     mxf_write_local_tag(pb, 4, 0x3D07);
 887     put_be32(pb, st->codec->channels);
 888
 889     mxf_write_local_tag(pb, 4, 0x3D01);
 890     put_be32(pb, av_get_bits_per_sample(st->codec->codec_id));
 891 }
 892
 893 static void mxf_write_wav_common(AVFormatContext *s, AVStream *st, const UID key, unsigned size)
 894 {
 895     ByteIOContext *pb = s->pb;
 896
 897     mxf_write_generic_sound_common(s, st, key, size);
 898
 899     mxf_write_local_tag(pb, 2, 0x3D0A);
 900     put_be16(pb, st->codec->block_align);
 901
 902     // avg bytes per sec
 903     mxf_write_local_tag(pb, 4, 0x3D09);
 904     put_be32(pb, st->codec->block_align*st->codec->sample_rate);
 905 }
 906
 907 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
 908 {
 909     mxf_write_wav_common(s, st, mxf_wav_descriptor_key, 107);
 910 }
 911
 912 static void mxf_write_aes3_desc(AVFormatContext *s, AVStream *st)
 913 {
 914     mxf_write_wav_common(s, st, mxf_aes3_descriptor_key, 107);
 915 }
 916
 917 static void mxf_write_generic_sound_desc(AVFormatContext *s, AVStream *st)
 918 {
 919     mxf_write_generic_sound_common(s, st, mxf_generic_sound_descriptor_key, 93);
 920 }
 921
 922 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
 923 {
 924     MXFContext *mxf = s->priv_data;
 925     ByteIOContext *pb = s->pb;
 926     int i, track_count;
 927
 928     if (type == MaterialPackage) {
 929         track_count = s->nb_streams + 1; // add timecode track
 930         mxf_write_metadata_key(pb, 0x013600);
 931         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
 932         klv_encode_ber_length(pb, 92 + 16*track_count);
 933     } else {
 934         track_count = s->nb_streams;
 935         mxf_write_metadata_key(pb, 0x013700);
 936         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
 937         klv_encode_ber_length(pb, 112 + 16*track_count); // 20 bytes length for descriptor reference
 938     }
 939
 940     // write uid
 941     mxf_write_local_tag(pb, 16, 0x3C0A);
 942     mxf_write_uuid(pb, type, 0);
 943     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
 944     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
 945
 946     // write package umid
 947     mxf_write_local_tag(pb, 32, 0x4401);
 948     mxf_write_umid(pb, type, 0);
 949     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
 950
 951     // package creation date
 952     mxf_write_local_tag(pb, 8, 0x4405);
 953     put_be64(pb, mxf->timestamp);
 954
 955     // package modified date
 956     mxf_write_local_tag(pb, 8, 0x4404);
 957     put_be64(pb, mxf->timestamp);
 958
 959     // write track refs
 960     mxf_write_local_tag(pb, track_count*16 + 8, 0x4403);
 961     mxf_write_refs_count(pb, track_count);
 962     for (i = 0; i < s->nb_streams; i++)
 963         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
 964     if (type == MaterialPackage)
 965         mxf_write_uuid(pb, Track, s->nb_streams); // timecode track
 966
 967     // write multiple descriptor reference
 968     if (type == SourcePackage) {
 969         mxf_write_local_tag(pb, 16, 0x4701);
 970         if (s->nb_streams > 1) {
 971             mxf_write_uuid(pb, MultipleDescriptor, 0);
 972             mxf_write_multi_descriptor(s);
 973         } else
 974             mxf_write_uuid(pb, SubDescriptor, 0);
 975     } else {
 976         // write timecode track
 977         mxf_write_track(s, mxf->timecode_track, type);
 978         mxf_write_sequence(s, mxf->timecode_track, type);
 979         mxf_write_timecode_component(s, mxf->timecode_track);
 980     }
 981
 982     for (i = 0; i < s->nb_streams; i++) {
 983         AVStream *st = s->streams[i];
 984         mxf_write_track(s, st, type);
 985         mxf_write_sequence(s, st, type);
 986         mxf_write_structural_component(s, st, type);
 987
 988         if (type == SourcePackage) {
 989             MXFStreamContext *sc = st->priv_data;
 990             mxf_essence_container_uls[sc->index].write_desc(s, st);
 991         }
 992     }
 993 }
 994
 995 static int mxf_write_essence_container_data(AVFormatContext *s)
 996 {
 997     ByteIOContext *pb = s->pb;
 998
 999     mxf_write_metadata_key(pb, 0x012300);
1000     klv_encode_ber_length(pb, 72);
1001
1002     mxf_write_local_tag(pb, 16, 0x3C0A); // Instance UID
1003     mxf_write_uuid(pb, EssenceContainerData, 0);
1004
1005     mxf_write_local_tag(pb, 32, 0x2701); // Linked Package UID
1006     mxf_write_umid(pb, SourcePackage, 0);
1007
1008     mxf_write_local_tag(pb, 4, 0x3F07); // BodySID
1009     put_be32(pb, 1);
1010
1011     mxf_write_local_tag(pb, 4, 0x3F06); // IndexSID
1012     put_be32(pb, 2);
1013
1014     return 0;
1015 }
1016
1017 static int mxf_write_header_metadata_sets(AVFormatContext *s)
1018 {
1019     mxf_write_preface(s);
1020     mxf_write_identification(s);
1021     mxf_write_content_storage(s);
1022     mxf_write_package(s, MaterialPackage);
1023     mxf_write_package(s, SourcePackage);
1024     mxf_write_essence_container_data(s);
1025     return 0;
1026 }
1027
1028 static unsigned klv_fill_size(uint64_t size)
1029 {
1030     unsigned pad = KAG_SIZE - (size & (KAG_SIZE-1));
1031     if (pad < 20) // smallest fill item possible
1032         return pad + KAG_SIZE;
1033     else
1034         return pad & (KAG_SIZE-1);
1035 }
1036
1037 static void mxf_write_index_table_segment(AVFormatContext *s)
1038 {
1039     MXFContext *mxf = s->priv_data;
1040     ByteIOContext *pb = s->pb;
1041     int i, j;
1042     int temporal_reordering = 0;
1043     int key_index = mxf->last_key_index;
1044
1045     av_log(s, AV_LOG_DEBUG, "edit units count %d\n", mxf->edit_units_count);
1046
1047     if (!mxf->edit_units_count && !mxf->edit_unit_byte_count)
1048         return;
1049
1050     put_buffer(pb, index_table_segment_key, 16);
1051
1052     if (mxf->edit_unit_byte_count) {
1053         klv_encode_ber_length(pb, 85);
1054     } else {
1055         klv_encode_ber_length(pb, 85 + 12+(s->nb_streams+1)*6 +
1056                               12+mxf->edit_units_count*(11+mxf->slice_count*4));
1057     }
1058
1059     // instance id
1060     mxf_write_local_tag(pb, 16, 0x3C0A);
1061     mxf_write_uuid(pb, IndexTableSegment, 0);
1062
1063     // index edit rate
1064     mxf_write_local_tag(pb, 8, 0x3F0B);
1065     put_be32(pb, mxf->time_base.num);
1066     put_be32(pb, mxf->time_base.den);
1067
1068     // index start position
1069     mxf_write_local_tag(pb, 8, 0x3F0C);
1070     put_be64(pb, mxf->last_indexed_edit_unit);
1071
1072     // index duration
1073     mxf_write_local_tag(pb, 8, 0x3F0D);
1074     put_be64(pb, mxf->edit_units_count);
1075
1076     // edit unit byte count
1077     mxf_write_local_tag(pb, 4, 0x3F05);
1078     put_be32(pb, mxf->edit_unit_byte_count);
1079
1080     // index sid
1081     mxf_write_local_tag(pb, 4, 0x3F06);
1082     put_be32(pb, 2);
1083
1084     // body sid
1085     mxf_write_local_tag(pb, 4, 0x3F07);
1086     put_be32(pb, 1);
1087
1088     // real slice count - 1
1089     mxf_write_local_tag(pb, 1, 0x3F08);
1090     put_byte(pb, mxf->slice_count);
1091
1092     if (!mxf->edit_unit_byte_count) {
1093         // delta entry array
1094         mxf_write_local_tag(pb, 8 + (s->nb_streams+1)*6, 0x3F09);
1095         put_be32(pb, s->nb_streams+1); // num of entries
1096         put_be32(pb, 6);               // size of one entry
1097         // write system item delta entry
1098         put_byte(pb, 0);
1099         put_byte(pb, 0); // slice entry
1100         put_be32(pb, 0); // element delta
1101         for (i = 0; i < s->nb_streams; i++) {
1102             AVStream *st = s->streams[i];
1103             MXFStreamContext *sc = st->priv_data;
1104             put_byte(pb, sc->temporal_reordering);
1105             if (sc->temporal_reordering)
1106                 temporal_reordering = 1;
1107             if (i == 0) { // video track
1108                 put_byte(pb, 0); // slice number
1109                 put_be32(pb, KAG_SIZE); // system item size including klv fill
1110             } else { // audio track
1111                 unsigned audio_frame_size = sc->aic.samples[0]*sc->aic.sample_size;
1112                 audio_frame_size += klv_fill_size(audio_frame_size);
1113                 put_byte(pb, 1);
1114                 put_be32(pb, (i-1)*audio_frame_size); // element delta
1115             }
1116         }
1117
1118         mxf_write_local_tag(pb, 8 + mxf->edit_units_count*(11+mxf->slice_count*4), 0x3F0A);
1119         put_be32(pb, mxf->edit_units_count);  // num of entries
1120         put_be32(pb, 11+mxf->slice_count*4);  // size of one entry
1121         for (i = 0; i < mxf->edit_units_count; i++) {
1122             if (temporal_reordering) {
1123                 int temporal_offset = 0;
1124                 for (j = i+1; j < mxf->edit_units_count; j++) {
1125                     temporal_offset++;
1126                     if (mxf->index_entries[j].flags & 0x10) { // backward prediction
1127                         // next is not b, so is reordered
1128                         if (!(mxf->index_entries[i+1].flags & 0x10)) {
1129                             if ((mxf->index_entries[i].flags & 0x11) == 0) // i frame
1130                                 temporal_offset = 0;
1131                             else
1132                                 temporal_offset = -temporal_offset;
1133                         }
1134                         break;
1135                     }
1136                 }
1137                 put_byte(pb, temporal_offset);
1138             } else
1139                 put_byte(pb, 0);
1140             if (!(mxf->index_entries[i].flags & 0x33)) { // I frame
1141                 mxf->last_key_index = key_index;
1142                 key_index = i;
1143             }
1144             if (mxf->index_entries[i].flags & 0x10 && // backward prediction
1145                 !(mxf->index_entries[key_index].flags & 0x80)) { // open gop
1146                 put_byte(pb, mxf->last_key_index - i);
1147             } else {
1148                 put_byte(pb, key_index - i); // key frame offset
1149                 if ((mxf->index_entries[i].flags & 0x20) == 0x20) // only forward
1150                     mxf->last_key_index = key_index;
1151             }
1152             put_byte(pb, mxf->index_entries[i].flags);
1153             // stream offset
1154             put_be64(pb, mxf->index_entries[i].offset);
1155             if (s->nb_streams > 1)
1156                 put_be32(pb, mxf->index_entries[i].slice_offset);
1157         }
1158
1159         mxf->last_key_index = key_index - mxf->edit_units_count;
1160         mxf->last_indexed_edit_unit += mxf->edit_units_count;
1161         mxf->edit_units_count = 0;
1162     }
1163 }
1164
1165 static void mxf_write_klv_fill(AVFormatContext *s)
1166 {
1167     unsigned pad = klv_fill_size(url_ftell(s->pb));
1168     if (pad) {
1169         put_buffer(s->pb, klv_fill_key, 16);
1170         pad -= 16 + 4;
1171         klv_encode_ber4_length(s->pb, pad);
1172         for (; pad; pad--)
1173             put_byte(s->pb, 0);
1174         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1175     }
1176 }
1177
1178 static void mxf_write_partition(AVFormatContext *s, int bodysid,
1179                                 int indexsid,
1180                                 const uint8_t *key, int write_metadata)
1181 {
1182     MXFContext *mxf = s->priv_data;
1183     ByteIOContext *pb = s->pb;
1184     int64_t header_byte_count_offset;
1185     unsigned index_byte_count = 0;
1186     uint64_t partition_offset = url_ftell(pb);
1187
1188     if (!mxf->edit_unit_byte_count && mxf->edit_units_count)
1189         index_byte_count = 85 + 12+(s->nb_streams+1)*6 +
1190             12+mxf->edit_units_count*(11+mxf->slice_count*4);
1191     else if (mxf->edit_unit_byte_count && indexsid)
1192         index_byte_count = 85;
1193
1194     if (index_byte_count) {
1195         // add encoded ber length
1196         index_byte_count += 16 + klv_ber_length(index_byte_count);
1197         index_byte_count += klv_fill_size(index_byte_count);
1198     }
1199
1200     if (!memcmp(key, body_partition_key, 16)) {
1201         mxf->body_partition_offset =
1202             av_realloc(mxf->body_partition_offset,
1203                        (mxf->body_partitions_count+1)*
1204                        sizeof(*mxf->body_partition_offset));
1205         mxf->body_partition_offset[mxf->body_partitions_count++] = partition_offset;
1206     }
1207
1208     // write klv
1209     put_buffer(pb, key, 16);
1210     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
1211
1212     // write partition value
1213     put_be16(pb, 1); // majorVersion
1214     put_be16(pb, 2); // minorVersion
1215     put_be32(pb, KAG_SIZE); // KAGSize
1216
1217     put_be64(pb, partition_offset); // ThisPartition
1218
1219     if (!memcmp(key, body_partition_key, 16) && mxf->body_partitions_count > 1)
1220         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-2]); // PreviousPartition
1221     else if (!memcmp(key, footer_partition_key, 16) && mxf->body_partitions_count)
1222         put_be64(pb, mxf->body_partition_offset[mxf->body_partitions_count-1]); // PreviousPartition
1223     else
1224         put_be64(pb, 0);
1225
1226     put_be64(pb, mxf->footer_partition_offset); // footerPartition
1227
1228     // set offset
1229     header_byte_count_offset = url_ftell(pb);
1230     put_be64(pb, 0); // headerByteCount, update later
1231
1232     // indexTable
1233     put_be64(pb, index_byte_count); // indexByteCount
1234     put_be32(pb, index_byte_count ? indexsid : 0); // indexSID
1235
1236     // BodyOffset
1237     if (bodysid && mxf->edit_units_count && mxf->body_partitions_count) {
1238         put_be64(pb, mxf->body_offset);
1239     } else
1240         put_be64(pb, 0);
1241
1242     put_be32(pb, bodysid); // bodySID
1243
1244     // operational pattern
1245     if (s->nb_streams > 1) {
1246         put_buffer(pb, op1a_ul, 14);
1247         put_be16(pb, 0x0900); // multi track
1248     } else {
1249         put_buffer(pb, op1a_ul, 16);
1250     }
1251
1252     // essence container
1253     mxf_write_essence_container_refs(s);
1254
1255     if (write_metadata) {
1256         // mark the start of the headermetadata and calculate metadata size
1257         int64_t pos, start;
1258         unsigned header_byte_count;
1259
1260         mxf_write_klv_fill(s);
1261         start = url_ftell(s->pb);
1262         mxf_write_primer_pack(s);
1263         mxf_write_header_metadata_sets(s);
1264         pos = url_ftell(s->pb);
1265         header_byte_count = pos - start + klv_fill_size(pos);
1266
1267         // update header_byte_count
1268         url_fseek(pb, header_byte_count_offset, SEEK_SET);
1269         put_be64(pb, header_byte_count);
1270         url_fseek(pb, pos, SEEK_SET);
1271     }
1272
1273     put_flush_packet(pb);
1274 }
1275
1276 static const UID mxf_mpeg2_codec_uls[] = {
1277     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
1278     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
1279     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
1280     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
1281     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
1282     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
1283     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
1284     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
1285 };
1286
1287 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
1288 {
1289     if (avctx->profile == 4) { // Main
1290         if (avctx->level == 8) // Main
1291             return avctx->gop_size ?
1292                 &mxf_mpeg2_codec_uls[1] :
1293                 &mxf_mpeg2_codec_uls[0];
1294         else if (avctx->level == 4) // High
1295             return avctx->gop_size ?
1296                 &mxf_mpeg2_codec_uls[5] :
1297                 &mxf_mpeg2_codec_uls[4];
1298     } else if (avctx->profile == 0) { // 422
1299         if (avctx->level == 5) // Main
1300             return avctx->gop_size ?
1301                 &mxf_mpeg2_codec_uls[3] :
1302                 &mxf_mpeg2_codec_uls[2];
1303         else if (avctx->level == 2) // High
1304             return avctx->gop_size ?
1305                 &mxf_mpeg2_codec_uls[7] :
1306                 &mxf_mpeg2_codec_uls[6];
1307     }
1308     return NULL;
1309 }
1310
1311 static int mxf_parse_mpeg2_frame(AVFormatContext *s, AVStream *st, AVPacket *pkt, int *flags)
1312 {
1313     MXFStreamContext *sc = st->priv_data;
1314     MXFContext *mxf = s->priv_data;
1315     uint32_t c = -1;
1316     int i;
1317
1318     *flags = 0;
1319
1320     for(i = 0; i < pkt->size - 4; i++) {
1321         c = (c<<8) + pkt->data[i];
1322         if (c == 0x1B5) {
1323             if (i + 2 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x10) { // seq ext
1324                 st->codec->profile = pkt->data[i+1] & 0x07;
1325                 st->codec->level   = pkt->data[i+2] >> 4;
1326             } else if (i + 5 < pkt->size && (pkt->data[i+1] & 0xf0) == 0x80) { // pict coding ext
1327                 sc->interlaced = !(pkt->data[i+5] & 0x80); // progressive frame
1328                 break;
1329             }
1330         } else if (c == 0x1b8) { // gop
1331             if (i + 4 < pkt->size) {
1332                 if (pkt->data[i+4]>>6 & 0x01) // closed
1333                     *flags |= 0x80; // random access
1334                 if (!mxf->header_written) {
1335                     unsigned hours   =  (pkt->data[i+1]>>2) & 0x1f;
1336                     unsigned minutes = ((pkt->data[i+1] & 0x03) << 4) | (pkt->data[i+2]>>4);
1337                     unsigned seconds = ((pkt->data[i+2] & 0x07) << 3) | (pkt->data[i+3]>>5);
1338                     unsigned frames  = ((pkt->data[i+3] & 0x1f) << 1) | (pkt->data[i+4]>>7);
1339                     mxf->timecode_drop_frame = !!(pkt->data[i+1] & 0x80);
1340                     mxf->timecode_start = (hours*3600 + minutes*60 + seconds) *
1341                         mxf->timecode_base + frames;
1342                     if (mxf->timecode_drop_frame) {
1343                         unsigned tminutes = 60 * hours + minutes;
1344                         mxf->timecode_start -= 2 * (tminutes - tminutes / 10);
1345                     }
1346                     av_log(s, AV_LOG_DEBUG, "frame %d %d:%d:%d%c%d\n", mxf->timecode_start,
1347                            hours, minutes, seconds, mxf->timecode_drop_frame ? ';':':', frames);
1348                 }
1349             }
1350         } else if (c == 0x1b3) { // seq
1351             *flags |= 0x40;
1352         } else if (c == 0x100) { // pic
1353             int pict_type = (pkt->data[i+2]>>3) & 0x07;
1354             if (pict_type == 2) { // P frame
1355                 *flags |= 0x22;
1356                 st->codec->gop_size = 1;
1357             } else if (pict_type == 3) { // B frame
1358                 *flags |= 0x33;
1359                 sc->temporal_reordering = -1;
1360             } else if (!pict_type) {
1361                 av_log(s, AV_LOG_ERROR, "error parsing mpeg2 frame\n");
1362                 return 0;
1363             }
1364         }
1365     }
1366     if (s->oformat != &mxf_d10_muxer)
1367         sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
1368     return !!sc->codec_ul;
1369 }
1370
1371 static uint64_t mxf_parse_timestamp(time_t timestamp)
1372 {
1373     struct tm *time = localtime(&timestamp);
1374     return (uint64_t)(time->tm_year+1900) << 48 |
1375            (uint64_t)(time->tm_mon+1)     << 40 |
1376            (uint64_t) time->tm_mday       << 32 |
1377                       time->tm_hour       << 24 |
1378                       time->tm_min        << 16 |
1379                       time->tm_sec        << 8;
1380 }
1381
1382 static int mxf_write_header(AVFormatContext *s)
1383 {
1384     MXFContext *mxf = s->priv_data;
1385     int i;
1386     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};
1387     const int *samples_per_frame = NULL;
1388
1389     for (i = 0; i < s->nb_streams; i++) {
1390         AVStream *st = s->streams[i];
1391         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
1392         if (!sc)
1393             return AVERROR(ENOMEM);
1394         st->priv_data = sc;
1395
1396         if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
1397             if (i != 0) {
1398                 av_log(s, AV_LOG_ERROR, "video stream must be first track\n");
1399                 return -1;
1400             }
1401             if (fabs(av_q2d(st->codec->time_base) - 1/25.0) < 0.0001) {
1402                 samples_per_frame = PAL_samples_per_frame;
1403                 mxf->time_base = (AVRational){ 1, 25 };
1404                 mxf->timecode_base = 25;
1405             } else if (fabs(av_q2d(st->codec->time_base) - 1001/30000.0) < 0.0001) {
1406                 samples_per_frame = NTSC_samples_per_frame;
1407                 mxf->time_base = (AVRational){ 1001, 30000 };
1408                 mxf->timecode_base = 30;
1409             } else {
1410                 av_log(s, AV_LOG_ERROR, "unsupported video frame rate\n");
1411                 return -1;
1412             }
1413             av_set_pts_info(st, 64, mxf->time_base.num, mxf->time_base.den);
1414             if (s->oformat == &mxf_d10_muxer) {
1415                 if (st->codec->bit_rate == 50000000)
1416                     if (mxf->time_base.den == 25) sc->index = 3;
1417                     else                          sc->index = 5;
1418                 else if (st->codec->bit_rate == 40000000)
1419                     if (mxf->time_base.den == 25) sc->index = 7;
1420                     else                          sc->index = 9;
1421                 else if (st->codec->bit_rate == 30000000)
1422                     if (mxf->time_base.den == 25) sc->index = 11;
1423                     else                          sc->index = 13;
1424                 else {
1425                     av_log(s, AV_LOG_ERROR, "error MXF D-10 only support 30/40/50 mbit/s\n");
1426                     return -1;
1427                 }
1428
1429                 mxf->edit_unit_byte_count = KAG_SIZE; // system element
1430                 mxf->edit_unit_byte_count += 16 + 4 + (uint64_t)st->codec->bit_rate *
1431                     mxf->time_base.num / (8*mxf->time_base.den);
1432                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1433                 mxf->edit_unit_byte_count += 16 + 4 + 4 + samples_per_frame[0]*8*4;
1434                 mxf->edit_unit_byte_count += klv_fill_size(mxf->edit_unit_byte_count);
1435             }
1436         } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
1437             if (st->codec->sample_rate != 48000) {
1438                 av_log(s, AV_LOG_ERROR, "only 48khz is implemented\n");
1439                 return -1;
1440             }
1441             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
1442             if (s->oformat == &mxf_d10_muxer) {
1443                 if (st->index != 1) {
1444                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support one audio track\n");
1445                     return -1;
1446                 }
1447                 if (st->codec->codec_id != CODEC_ID_PCM_S16LE &&
1448                     st->codec->codec_id != CODEC_ID_PCM_S24LE) {
1449                     av_log(s, AV_LOG_ERROR, "MXF D-10 only support 16 or 24 bits le audio\n");
1450                 }
1451                 sc->index = ((MXFStreamContext*)s->streams[0]->priv_data)->index + 1;
1452             } else
1453             mxf->slice_count = 1;
1454         }
1455
1456         if (!sc->index) {
1457             sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
1458             if (sc->index == -1) {
1459                 av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
1460                        "codec not currently supported in container\n", i);
1461                 return -1;
1462             }
1463         }
1464
1465         sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
1466
1467         if (!present[sc->index]) {
1468             present[sc->index] = 1;
1469             mxf->essence_container_count++;
1470         } else
1471             present[sc->index]++;
1472
1473         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
1474         sc->track_essence_element_key[15] = present[sc->index];
1475         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
1476     }
1477
1478     if (s->oformat == &mxf_d10_muxer) {
1479         mxf->essence_container_count = 1;
1480     }
1481
1482     for (i = 0; i < s->nb_streams; i++) {
1483         MXFStreamContext *sc = s->streams[i]->priv_data;
1484         // update element count
1485         sc->track_essence_element_key[13] = present[sc->index];
1486         sc->order = AV_RB32(sc->track_essence_element_key+12);
1487     }
1488
1489     mxf->timestamp = mxf_parse_timestamp(s->timestamp);
1490     mxf->duration = -1;
1491
1492     mxf->timecode_track = av_mallocz(sizeof(*mxf->timecode_track));
1493     if (!mxf->timecode_track)
1494         return AVERROR(ENOMEM);
1495     mxf->timecode_track->priv_data = av_mallocz(sizeof(MXFStreamContext));
1496     if (!mxf->timecode_track->priv_data)
1497         return AVERROR(ENOMEM);
1498     mxf->timecode_track->index = s->nb_streams;
1499
1500     if (!samples_per_frame)
1501         samples_per_frame = PAL_samples_per_frame;
1502
1503     if (ff_audio_interleave_init(s, samples_per_frame, mxf->time_base) < 0)
1504         return -1;
1505
1506     return 0;
1507 }
1508
1509 static const uint8_t system_metadata_pack_key[]        = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04,0x01,0x01,0x00 };
1510 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 };
1511
1512 static uint32_t ff_framenum_to_12m_time_code(unsigned frame, int drop, int fps)
1513 {
1514     return (0                                    << 31) | // color frame flag
1515            (0                                    << 30) | // drop  frame flag
1516            ( ((frame % fps) / 10)                << 28) | // tens  of frames
1517            ( ((frame % fps) % 10)                << 24) | // units of frames
1518            (0                                    << 23) | // field phase (NTSC), b0 (PAL)
1519            ((((frame / fps) % 60) / 10)          << 20) | // tens  of seconds
1520            ((((frame / fps) % 60) % 10)          << 16) | // units of seconds
1521            (0                                    << 15) | // b0 (NTSC), b2 (PAL)
1522            ((((frame / (fps * 60)) % 60) / 10)   << 12) | // tens  of minutes
1523            ((((frame / (fps * 60)) % 60) % 10)   <<  8) | // units of minutes
1524            (0                                    <<  7) | // b1
1525            (0                                    <<  6) | // b2 (NSC), field phase (PAL)
1526            ((((frame / (fps * 3600) % 24)) / 10) <<  4) | // tens  of hours
1527            (  (frame / (fps * 3600) % 24)) % 10;          // units of hours
1528 }
1529
1530 static void mxf_write_system_item(AVFormatContext *s)
1531 {
1532     MXFContext *mxf = s->priv_data;
1533     ByteIOContext *pb = s->pb;
1534     unsigned frame;
1535     uint32_t time_code;
1536
1537     frame = mxf->timecode_start + mxf->last_indexed_edit_unit + mxf->edit_units_count;
1538
1539     // write system metadata pack
1540     put_buffer(pb, system_metadata_pack_key, 16);
1541     klv_encode_ber4_length(pb, 57);
1542     put_byte(pb, 0x5c); // UL, user date/time stamp, picture and sound item present
1543     put_byte(pb, 0x04); // content package rate
1544     put_byte(pb, 0x00); // content package type
1545     put_be16(pb, 0x00); // channel handle
1546     put_be16(pb, frame); // continuity count
1547     if (mxf->essence_container_count > 1)
1548         put_buffer(pb, multiple_desc_ul, 16);
1549     else {
1550         MXFStreamContext *sc = s->streams[0]->priv_data;
1551         put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
1552     }
1553     put_byte(pb, 0);
1554     put_be64(pb, 0);
1555     put_be64(pb, 0); // creation date/time stamp
1556
1557     put_byte(pb, 0x81); // SMPTE 12M time code
1558     time_code = ff_framenum_to_12m_time_code(frame, mxf->timecode_drop_frame, mxf->timecode_base);
1559     put_be32(pb, time_code);
1560     put_be32(pb, 0); // binary group data
1561     put_be64(pb, 0);
1562
1563     // write system metadata package set
1564     put_buffer(pb, system_metadata_package_set_key, 16);
1565     klv_encode_ber4_length(pb, 35);
1566     put_byte(pb, 0x83); // UMID
1567     put_be16(pb, 0x20);
1568     mxf_write_umid(pb, SourcePackage, 0);
1569 }
1570
1571 static void mxf_write_d10_video_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1572 {
1573     MXFContext *mxf = s->priv_data;
1574     ByteIOContext *pb = s->pb;
1575     int packet_size = (uint64_t)st->codec->bit_rate*mxf->time_base.num /
1576         (8*mxf->time_base.den); // frame size
1577     int pad;
1578
1579     packet_size += 16 + 4;
1580     packet_size += klv_fill_size(packet_size);
1581
1582     klv_encode_ber4_length(pb, pkt->size);
1583     put_buffer(pb, pkt->data, pkt->size);
1584
1585     // ensure CBR muxing by padding to correct video frame size
1586     pad = packet_size - pkt->size - 16 - 4;
1587     if (pad > 20) {
1588         put_buffer(s->pb, klv_fill_key, 16);
1589         pad -= 16 + 4;
1590         klv_encode_ber4_length(s->pb, pad);
1591         for (; pad; pad--)
1592             put_byte(s->pb, 0);
1593         assert(!(url_ftell(s->pb) & (KAG_SIZE-1)));
1594     } else {
1595         av_log(s, AV_LOG_WARNING, "cannot fill d-10 video packet\n");
1596         for (; pad > 0; pad--)
1597             put_byte(s->pb, 0);
1598     }
1599 }
1600
1601 static void mxf_write_d10_audio_packet(AVFormatContext *s, AVStream *st, AVPacket *pkt)
1602 {
1603     MXFContext *mxf = s->priv_data;
1604     ByteIOContext *pb = s->pb;
1605     int frame_size = (pkt->size<<3) /
1606         (st->codec->channels*av_get_bits_per_sample(st->codec->codec_id));
1607     uint8_t *samples = pkt->data;
1608     uint8_t *end = pkt->data + pkt->size;
1609     int i;
1610
1611     klv_encode_ber4_length(pb, 4 + frame_size*4*8);
1612
1613     put_byte(pb, (frame_size == 1920 ? 0 : (mxf->edit_units_count-1) % 5 + 1));
1614     put_le16(pb, frame_size);
1615     put_byte(pb, (1<<st->codec->channels)-1);
1616
1617     while (samples < end) {
1618         for (i = 0; i < st->codec->channels; i++) {
1619             uint32_t sample;
1620             if (st->codec->codec_id == CODEC_ID_PCM_S24LE) {
1621                 sample = (AV_RL24(samples)<< 4)|((samples==pkt->data)<<3) | i;
1622                 samples += 3;
1623             } else {
1624                 sample = (AV_RL16(samples)<<12)|((samples==pkt->data)<<3) | i;
1625                 samples += 2;
1626             }
1627             put_le32(pb, sample);
1628         }
1629         for (; i < 8; i++)
1630             put_le32(pb, 0);
1631     }
1632 }
1633
1634 static int mxf_write_d10_packet(AVFormatContext *s, AVPacket *pkt)
1635 {
1636     MXFContext *mxf = s->priv_data;
1637     ByteIOContext *pb = s->pb;
1638     AVStream *st = s->streams[pkt->stream_index];
1639     MXFStreamContext *sc = st->priv_data;
1640     int flags = 0;
1641
1642     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1643         if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1644             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1645             return -1;
1646         }
1647     }
1648
1649     if (!mxf->header_written) {
1650         mxf_write_partition(s, 1, 2, header_open_partition_key, 1);
1651         mxf->header_written = 1;
1652         mxf_write_klv_fill(s);
1653         mxf_write_index_table_segment(s);
1654     }
1655
1656     if (st->index == 0) {
1657         mxf_write_klv_fill(s);
1658         mxf_write_system_item(s);
1659
1660         mxf->edit_units_count++;
1661     }
1662
1663     mxf_write_klv_fill(s);
1664     put_buffer(pb, sc->track_essence_element_key, 16); // write key
1665     if (st->codec->codec_type == CODEC_TYPE_VIDEO)
1666         mxf_write_d10_video_packet(s, st, pkt);
1667     else
1668         mxf_write_d10_audio_packet(s, st, pkt);
1669
1670     put_flush_packet(pb);
1671
1672     return 0;
1673 }
1674
1675 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
1676 {
1677     MXFContext *mxf = s->priv_data;
1678     ByteIOContext *pb = s->pb;
1679     AVStream *st = s->streams[pkt->stream_index];
1680     MXFStreamContext *sc = st->priv_data;
1681     int flags = 0;
1682
1683     if (!(mxf->edit_units_count % EDIT_UNITS_PER_BODY)) {
1684         mxf->index_entries = av_realloc(mxf->index_entries,
1685             (mxf->edit_units_count + EDIT_UNITS_PER_BODY)*sizeof(*mxf->index_entries));
1686         if (!mxf->index_entries) {
1687             av_log(s, AV_LOG_ERROR, "could not allocate index entries\n");
1688             return -1;
1689         }
1690     }
1691
1692     if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
1693         if (!mxf_parse_mpeg2_frame(s, st, pkt, &flags)) {
1694             av_log(s, AV_LOG_ERROR, "could not get mpeg2 profile and level\n");
1695             return -1;
1696         }
1697     }
1698
1699     if (!mxf->header_written) {
1700         mxf_write_partition(s, 0, 0, header_open_partition_key, 1);
1701         mxf->header_written = 1;
1702     }
1703
1704     if (st->index == 0) {
1705         if ((!mxf->edit_units_count || mxf->edit_units_count > EDIT_UNITS_PER_BODY) &&
1706             !(flags & 0x33)) { // I frame, Gop start
1707             mxf_write_klv_fill(s);
1708             mxf_write_partition(s, 1, 2, body_partition_key, 0);
1709
1710             mxf_write_klv_fill(s);
1711             mxf_write_index_table_segment(s);
1712         }
1713
1714         mxf_write_klv_fill(s);
1715         mxf->index_entries[mxf->edit_units_count].offset = mxf->body_offset;
1716         mxf->index_entries[mxf->edit_units_count].flags = flags;
1717         mxf_write_system_item(s);
1718
1719         mxf->body_offset += KAG_SIZE; // size of system element
1720
1721         mxf->edit_units_count++;
1722     } else if (st->index == 1) {
1723         mxf->index_entries[mxf->edit_units_count-1].slice_offset =
1724             mxf->body_offset - mxf->index_entries[mxf->edit_units_count-1].offset;
1725     }
1726
1727     mxf_write_klv_fill(s);
1728     put_buffer(pb, sc->track_essence_element_key, 16); // write key
1729     klv_encode_ber4_length(pb, pkt->size); // write length
1730     put_buffer(pb, pkt->data, pkt->size); // write value
1731
1732     put_flush_packet(pb);
1733
1734     mxf->body_offset += 16+4+pkt->size + klv_fill_size(16+4+pkt->size);
1735
1736     return 0;
1737 }
1738
1739 static void mxf_write_random_index_pack(AVFormatContext *s)
1740 {
1741     MXFContext *mxf = s->priv_data;
1742     ByteIOContext *pb = s->pb;
1743     uint64_t pos = url_ftell(pb);
1744     int i;
1745
1746     put_buffer(pb, random_index_pack_key, 16);
1747     klv_encode_ber_length(pb, 28 + 12*mxf->body_partitions_count);
1748
1749     put_be32(pb, 0); // BodySID of header partition
1750     put_be64(pb, 0); // offset of header partition
1751
1752     for (i = 0; i < mxf->body_partitions_count; i++) {
1753         put_be32(pb, 1); // BodySID
1754         put_be64(pb, mxf->body_partition_offset[i]);
1755     }
1756
1757     put_be32(pb, 0); // BodySID of footer partition
1758     put_be64(pb, mxf->footer_partition_offset);
1759
1760     put_be32(pb, url_ftell(pb) - pos + 4);
1761 }
1762
1763 static int mxf_write_footer(AVFormatContext *s)
1764 {
1765     MXFContext *mxf = s->priv_data;
1766     ByteIOContext *pb = s->pb;
1767
1768     mxf->duration = mxf->last_indexed_edit_unit + mxf->edit_units_count;
1769
1770     mxf_write_klv_fill(s);
1771     mxf->footer_partition_offset = url_ftell(pb);
1772     if (mxf->edit_unit_byte_count) { // no need to repeat index
1773         mxf_write_partition(s, 0, 0, footer_partition_key, 0);
1774     } else {
1775         mxf_write_partition(s, 0, 2, footer_partition_key, 0);
1776
1777         mxf_write_klv_fill(s);
1778         mxf_write_index_table_segment(s);
1779     }
1780
1781     mxf_write_klv_fill(s);
1782     mxf_write_random_index_pack(s);
1783
1784     if (!url_is_streamed(s->pb)) {
1785         int index;
1786         url_fseek(pb, 0, SEEK_SET);
1787         if (s->oformat == &mxf_d10_muxer) {
1788             mxf_write_partition(s, 1, 2, header_closed_partition_key, 1);
1789             index = 1;
1790         } else if (mxf->edit_unit_byte_count) {
1791             mxf_write_partition(s, 0, 2, header_closed_partition_key, 1);
1792             index = 1;
1793         } else {
1794             mxf_write_partition(s, 0, 0, header_closed_partition_key, 1);
1795             index = 0;
1796         }
1797         if (index) {
1798             mxf_write_klv_fill(s);
1799             mxf_write_index_table_segment(s);
1800         }
1801     }
1802
1803     ff_audio_interleave_close(s);
1804
1805     av_freep(&mxf->index_entries);
1806     av_freep(&mxf->body_partition_offset);
1807     av_freep(&mxf->timecode_track->priv_data);
1808     av_freep(&mxf->timecode_track);
1809
1810     mxf_free(s);
1811
1812     return 0;
1813 }
1814
1815 static int mxf_interleave_get_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1816 {
1817     AVPacketList *pktl;
1818     int stream_count = 0;
1819     int streams[MAX_STREAMS];
1820
1821     memset(streams, 0, sizeof(streams));
1822     pktl = s->packet_buffer;
1823     while (pktl) {
1824         //av_log(s, AV_LOG_DEBUG, "show st:%d dts:%lld\n", pktl->pkt.stream_index, pktl->pkt.dts);
1825         if (!streams[pktl->pkt.stream_index])
1826             stream_count++;
1827         streams[pktl->pkt.stream_index]++;
1828         pktl = pktl->next;
1829     }
1830
1831     if (stream_count && (s->nb_streams == stream_count || flush)) {
1832         pktl = s->packet_buffer;
1833         if (s->nb_streams != stream_count) {
1834             AVPacketList *first = NULL;
1835             AVPacketList *last = NULL;
1836             // find first packet in edit unit
1837             while (pktl) {
1838                 AVStream *st = s->streams[pktl->pkt.stream_index];
1839                 if (st->index == 0)
1840                     break;
1841                 else if (!first)
1842                     first = pktl;
1843                 last = pktl;
1844                 pktl = pktl->next;
1845             }
1846             if (last)
1847                 last->next = NULL;
1848             // purge packet queue
1849             while (pktl) {
1850                 AVPacketList *next = pktl->next;
1851                 av_free_packet(&pktl->pkt);
1852                 av_freep(&pktl);
1853                 pktl = next;
1854             }
1855             if (!first)
1856                 goto out;
1857             pktl = first;
1858         }
1859
1860         *out = pktl->pkt;
1861         //av_log(s, AV_LOG_DEBUG, "out st:%d dts:%lld\n", (*out).stream_index, (*out).dts);
1862         s->packet_buffer = pktl->next;
1863         av_freep(&pktl);
1864         return 1;
1865     } else {
1866     out:
1867         av_init_packet(out);
1868         return 0;
1869     }
1870 }
1871
1872 static int mxf_compare_timestamps(AVFormatContext *s, AVPacket *next, AVPacket *pkt)
1873 {
1874     MXFStreamContext *sc  = s->streams[pkt ->stream_index]->priv_data;
1875     MXFStreamContext *sc2 = s->streams[next->stream_index]->priv_data;
1876
1877     return next->dts > pkt->dts ||
1878         (next->dts == pkt->dts && sc->order < sc2->order);
1879 }
1880
1881 static int mxf_interleave(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
1882 {
1883     return ff_audio_rechunk_interleave(s, out, pkt, flush,
1884                                mxf_interleave_get_packet, mxf_compare_timestamps);
1885 }
1886
1887 AVOutputFormat mxf_muxer = {
1888     "mxf",
1889     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
1890     "application/mxf",
1891     "mxf",
1892     sizeof(MXFContext),
1893     CODEC_ID_PCM_S16LE,
1894     CODEC_ID_MPEG2VIDEO,
1895     mxf_write_header,
1896     mxf_write_packet,
1897     mxf_write_footer,
1898     AVFMT_NOTIMESTAMPS,
1899     NULL,
1900     mxf_interleave,
1901 };
1902
1903 AVOutputFormat mxf_d10_muxer = {
1904     "mxf_d10",
1905     NULL_IF_CONFIG_SMALL("Material eXchange Format, D-10 Mapping"),
1906     "application/mxf",
1907     NULL,
1908     sizeof(MXFContext),
1909     CODEC_ID_PCM_S16LE,
1910     CODEC_ID_MPEG2VIDEO,
1911     mxf_write_header,
1912     mxf_write_d10_packet,
1913     mxf_write_footer,
1914     AVFMT_NOTIMESTAMPS,
1915     NULL,
1916     mxf_interleave,
1917 };