libavformat/mxfenc.c

   1 /*
   2  * MXF muxer
   3  * Copyright (c) 2008 GUCAS, Zhentan Feng <spyfeng at gmail dot com>
   4  *
   5  * This file is part of FFmpeg.
   6  *
   7  * FFmpeg is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * FFmpeg is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with FFmpeg; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /*
  23  * References
  24  * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
  25  * SMPTE 377M MXF File Format Specifications
  26  * SMPTE 379M MXF Generic Container
  27  * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
  28  * SMPTE RP210: SMPTE Metadata Dictionary
  29  * SMPTE RP224: Registry of SMPTE Universal Labels
  30  */
  31
  32 //#define DEBUG
  33
  34 #include "mxf.h"
  35
  36 typedef struct {
  37     int local_tag;
  38     UID uid;
  39 } MXFLocalTagPair;
  40
  41 typedef struct {
  42     UID track_essence_element_key;
  43     int index; //<<< index in mxf_essence_container_uls table
  44     const UID *codec_ul;
  45     int64_t duration;
  46 } MXFStreamContext;
  47
  48 typedef struct {
  49     UID container_ul;
  50     UID element_ul;
  51     UID codec_ul;
  52     enum CodecID id;
  53     void (*write_desc)();
  54 } MXFContainerEssenceEntry;
  55
  56 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st);
  57 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st);
  58
  59 static const MXFContainerEssenceEntry mxf_essence_container_uls[] = {
  60     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 },
  61       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 },
  62       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x00,0x00,0x00 },
  63       CODEC_ID_MPEG2VIDEO, mxf_write_mpegvideo_desc },
  64     { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 },
  65       { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 },
  66       { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x00,0x00,0x00,0x00 },
  67       CODEC_ID_PCM_S16LE, mxf_write_wav_desc },
  68     { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
  69       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
  70       { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },
  71       CODEC_ID_NONE, NULL },
  72 };
  73
  74 typedef struct MXFContext {
  75     int64_t footer_partition_offset;
  76     int essence_container_count;
  77     uint8_t essence_containers_indices[sizeof(mxf_essence_container_uls)/
  78                                        sizeof(*mxf_essence_container_uls)];
  79 } MXFContext;
  80
  81 static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };
  82 static const uint8_t umid_base[]            = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x0F,0x00,0x13,0x00,0x00,0x00 };
  83
  84 /**
  85  * complete key for operation pattern, partitions, and primer pack
  86  */
  87 static const uint8_t op1a_ul[]              = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };
  88 static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete
  89 static const uint8_t primer_pack_key[]      = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };
  90
  91
  92 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
  93 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
  94
  95 /**
  96  * partial key for header metadata
  97  */
  98 static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };
  99
 100 static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };
 101
 102 /**
 103  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html
 104  */
 105 static const MXFLocalTagPair mxf_local_tag_batch[] = {
 106     // preface set
 107     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */
 108     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */
 109     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */
 110     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */
 111     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */
 112     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */
 113     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */
 114     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */
 115     // Identification
 116     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */
 117     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */
 118     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */
 119     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */
 120     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */
 121     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */
 122     // Content Storage
 123     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */
 124     // Essence Container Data
 125     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */
 126     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */
 127     // Package
 128     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */
 129     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */
 130     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */
 131     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */
 132     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */
 133     // Track
 134     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */
 135     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */
 136     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */
 137     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */
 138     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */
 139     // Sequence
 140     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */
 141     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */
 142     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */
 143     // Source Clip
 144     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Start position */
 145     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */
 146     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */
 147     // File Descriptor
 148     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */
 149     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */
 150     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */
 151     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */
 152     // Generic Picture Essence Descriptor
 153     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */
 154     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */
 155     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */
 156     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */
 157     // Generic Sound Essence Descriptor
 158     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */
 159     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */
 160     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */
 161     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */
 162 };
 163
 164 static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
 165 {
 166     put_buffer(pb, uuid_base, 12);
 167     put_be16(pb, type);
 168     put_be16(pb, value);
 169 }
 170
 171 static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)
 172 {
 173     put_buffer(pb, umid_base, 16);
 174     mxf_write_uuid(pb, type, value);
 175 }
 176
 177 static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)
 178 {
 179     put_be32(pb, ref_count);
 180     put_be32(pb, 16);
 181 }
 182
 183 static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)
 184 {
 185     // Determine the best BER size
 186     int size;
 187     if (len < 128) {
 188         //short form
 189         put_byte(pb, len);
 190         return 1;
 191     }
 192
 193     size = (av_log2(len) >> 3) + 1;
 194
 195     // long form
 196     put_byte(pb, 0x80 + size);
 197     while(size) {
 198         size --;
 199         put_byte(pb, len >> 8 * size & 0xff);
 200     }
 201     return 0;
 202 }
 203
 204 /*
 205  * Get essence container ul index
 206  */
 207 static int mxf_get_essence_container_ul_index(enum CodecID id)
 208 {
 209     int i;
 210     for (i = 0; i < sizeof(mxf_essence_container_uls)/
 211                     sizeof(*mxf_essence_container_uls); i++)
 212         if (mxf_essence_container_uls[i].id == id)
 213             return i;
 214     return -1;
 215 }
 216
 217 static void mxf_write_primer_pack(AVFormatContext *s)
 218 {
 219     ByteIOContext *pb = s->pb;
 220     int local_tag_number, i = 0;
 221
 222     local_tag_number = sizeof(mxf_local_tag_batch)/sizeof(*mxf_local_tag_batch);
 223
 224     put_buffer(pb, primer_pack_key, 16);
 225     klv_encode_ber_length(pb, local_tag_number * 18 + 8);
 226
 227     put_be32(pb, local_tag_number); // local_tag num
 228     put_be32(pb, 18); // item size, always 18 according to the specs
 229
 230     for (i = 0; i < local_tag_number; i++) {
 231         put_be16(pb, mxf_local_tag_batch[i].local_tag);
 232         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);
 233     }
 234 }
 235
 236 static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)
 237 {
 238     put_be16(pb, tag);
 239     put_be16(pb, size);
 240 }
 241
 242 static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)
 243 {
 244     put_buffer(pb, header_metadata_key, 13);
 245     put_be24(pb, value);
 246 }
 247
 248 static void mxf_free(AVFormatContext *s)
 249 {
 250     int i;
 251
 252     for (i = 0; i < s->nb_streams; i++) {
 253         AVStream *st = s->streams[i];
 254         av_freep(&st->priv_data);
 255     }
 256 }
 257
 258 static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)
 259 {
 260     const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;
 261     while (uls->type != CODEC_TYPE_DATA) {
 262         if (type == uls->type)
 263             break;
 264         uls++;
 265     }
 266     return uls;
 267 }
 268
 269 static void mxf_write_essence_container_refs(AVFormatContext *s)
 270 {
 271     MXFContext *c = s->priv_data;
 272     ByteIOContext *pb = s->pb;
 273     int i;
 274
 275     mxf_write_refs_count(pb, c->essence_container_count);
 276     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);
 277     for (i = 0; i < c->essence_container_count; i++) {
 278         put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);
 279         PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);
 280     }
 281 }
 282
 283 static void mxf_write_preface(AVFormatContext *s)
 284 {
 285     MXFContext *mxf = s->priv_data;
 286     ByteIOContext *pb = s->pb;
 287
 288     mxf_write_metadata_key(pb, 0x012f00);
 289     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);
 290     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);
 291
 292     // write preface set uid
 293     mxf_write_local_tag(pb, 16, 0x3C0A);
 294     mxf_write_uuid(pb, Preface, 0);
 295     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);
 296
 297     // write create date as unknown
 298     mxf_write_local_tag(pb, 8, 0x3B02);
 299     put_be64(pb, 0);
 300
 301     // write version
 302     mxf_write_local_tag(pb, 2, 0x3B05);
 303     put_be16(pb, 1);
 304
 305     // write identification_refs
 306     mxf_write_local_tag(pb, 16 + 8, 0x3B06);
 307     mxf_write_refs_count(pb, 1);
 308     mxf_write_uuid(pb, Identification, 0);
 309
 310     // write content_storage_refs
 311     mxf_write_local_tag(pb, 16, 0x3B03);
 312     mxf_write_uuid(pb, ContentStorage, 0);
 313
 314     mxf_write_local_tag(pb, 16, 0x3B09);
 315     put_buffer(pb, op1a_ul, 16);
 316
 317     // write essence_container_refs
 318     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);
 319     mxf_write_essence_container_refs(s);
 320
 321     // write dm_scheme_refs
 322     mxf_write_local_tag(pb, 8, 0x3B0B);
 323     put_be64(pb, 0);
 324 }
 325
 326 /*
 327  * Write a local tag containing an ascii string as utf-16
 328  */
 329 static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)
 330 {
 331     int i, size = strlen(value);
 332     mxf_write_local_tag(pb, size*2, tag);
 333     for (i = 0; i < size; i++)
 334         put_be16(pb, value[i]);
 335 }
 336
 337 static void mxf_write_identification(AVFormatContext *s)
 338 {
 339     ByteIOContext *pb = s->pb;
 340     const char *company = "FFmpeg";
 341     const char *product = "OP1a Muxer";
 342     const char *version;
 343     int length;
 344
 345     mxf_write_metadata_key(pb, 0x013000);
 346     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
 347
 348     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?
 349         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
 350     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16
 351     klv_encode_ber_length(pb, length);
 352
 353     // write uid
 354     mxf_write_local_tag(pb, 16, 0x3C0A);
 355     mxf_write_uuid(pb, Identification, 0);
 356     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);
 357
 358     // write generation uid
 359     mxf_write_local_tag(pb, 16, 0x3C09);
 360     mxf_write_uuid(pb, Identification, 1);
 361
 362     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name
 363     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name
 364     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String
 365
 366     // write product uid
 367     mxf_write_local_tag(pb, 16, 0x3C05);
 368     mxf_write_uuid(pb, Identification, 2);
 369
 370     // write modified date
 371     mxf_write_local_tag(pb, 8, 0x3C06);
 372     put_be64(pb, 0);
 373 }
 374
 375 static void mxf_write_content_storage(AVFormatContext *s)
 376 {
 377     ByteIOContext *pb = s->pb;
 378
 379     mxf_write_metadata_key(pb, 0x011800);
 380     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);
 381     klv_encode_ber_length(pb, 64);
 382
 383     // write uid
 384     mxf_write_local_tag(pb, 16, 0x3C0A);
 385     mxf_write_uuid(pb, ContentStorage, 0);
 386     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);
 387
 388     // write package reference
 389     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);
 390     mxf_write_refs_count(pb, 2);
 391     mxf_write_uuid(pb, MaterialPackage, 0);
 392     mxf_write_uuid(pb, SourcePackage, 0);
 393 }
 394
 395 static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 396 {
 397     ByteIOContext *pb = s->pb;
 398     MXFStreamContext *sc = st->priv_data;
 399
 400     mxf_write_metadata_key(pb, 0x013b00);
 401     PRINT_KEY(s, "track key", pb->buf_ptr - 16);
 402     klv_encode_ber_length(pb, 80);
 403
 404     // write track uid
 405     mxf_write_local_tag(pb, 16, 0x3C0A);
 406     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);
 407     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);
 408
 409     // write track id
 410     mxf_write_local_tag(pb, 4, 0x4801);
 411     put_be32(pb, st->index);
 412
 413     // write track number
 414     mxf_write_local_tag(pb, 4, 0x4804);
 415     if (type == MaterialPackage)
 416         put_be32(pb, 0); // track number of material package is 0
 417     else
 418         put_buffer(pb, sc->track_essence_element_key + 12, 4);
 419
 420     mxf_write_local_tag(pb, 8, 0x4B01);
 421     put_be32(pb, st->time_base.den);
 422     put_be32(pb, st->time_base.num);
 423
 424     // write origin
 425     mxf_write_local_tag(pb, 8, 0x4B02);
 426     put_be64(pb, 0);
 427
 428     // write sequence refs
 429     mxf_write_local_tag(pb, 16, 0x4803);
 430     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 431 }
 432
 433 static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)
 434 {
 435     const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);
 436     MXFStreamContext *sc = st->priv_data;
 437
 438     // find data define uls
 439     mxf_write_local_tag(pb, 16, 0x0201);
 440     put_buffer(pb, data_def_ul->uid, 16);
 441
 442     // write duration
 443     mxf_write_local_tag(pb, 8, 0x0202);
 444     put_be64(pb, sc->duration);
 445 }
 446
 447 static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 448 {
 449     ByteIOContext *pb = s->pb;
 450
 451     mxf_write_metadata_key(pb, 0x010f00);
 452     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);
 453     klv_encode_ber_length(pb, 80);
 454
 455     mxf_write_local_tag(pb, 16, 0x3C0A);
 456     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);
 457
 458     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);
 459     mxf_write_common_fields(pb, st);
 460
 461     // write structural component
 462     mxf_write_local_tag(pb, 16 + 8, 0x1001);
 463     mxf_write_refs_count(pb, 1);
 464     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 465 }
 466
 467 static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)
 468 {
 469     ByteIOContext *pb = s->pb;
 470     int i;
 471
 472     mxf_write_metadata_key(pb, 0x011100);
 473     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);
 474     klv_encode_ber_length(pb, 108);
 475
 476     // write uid
 477     mxf_write_local_tag(pb, 16, 0x3C0A);
 478     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);
 479
 480     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);
 481     mxf_write_common_fields(pb, st);
 482
 483     // write start_position
 484     mxf_write_local_tag(pb, 8, 0x1201);
 485     put_be64(pb, 0);
 486
 487     // write source package uid, end of the reference
 488     mxf_write_local_tag(pb, 32, 0x1101);
 489     if (type == SourcePackage) {
 490         for (i = 0; i < 4; i++)
 491             put_be64(pb, 0);
 492     } else
 493         mxf_write_umid(pb, SourcePackage, 0);
 494
 495     // write source track id
 496     mxf_write_local_tag(pb, 4, 0x1102);
 497     if (type == SourcePackage)
 498         put_be32(pb, 0);
 499     else
 500         put_be32(pb, st->index);
 501 }
 502
 503 static void mxf_write_multi_descriptor(AVFormatContext *s)
 504 {
 505     ByteIOContext *pb = s->pb;
 506     int i;
 507
 508     mxf_write_metadata_key(pb, 0x014400);
 509     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);
 510     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);
 511
 512     mxf_write_local_tag(pb, 16, 0x3C0A);
 513     mxf_write_uuid(pb, MultipleDescriptor, 0);
 514     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);
 515
 516     // write sample rate
 517     mxf_write_local_tag(pb, 8, 0x3001);
 518     put_be32(pb, s->streams[0]->time_base.den);
 519     put_be32(pb, s->streams[0]->time_base.num);
 520
 521     // write essence container ul
 522     mxf_write_local_tag(pb, 16, 0x3004);
 523     put_buffer(pb, multiple_desc_ul, 16);
 524
 525     // write sub descriptor refs
 526     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);
 527     mxf_write_refs_count(pb, s->nb_streams);
 528     for (i = 0; i < s->nb_streams; i++)
 529         mxf_write_uuid(pb, SubDescriptor, i);
 530 }
 531
 532 static void mxf_write_generic_desc(ByteIOContext *pb, AVStream *st, const UID key)
 533 {
 534     MXFStreamContext *sc = st->priv_data;
 535
 536     put_buffer(pb, key, 16);
 537     klv_encode_ber_length(pb, 108);
 538
 539     mxf_write_local_tag(pb, 16, 0x3C0A);
 540     mxf_write_uuid(pb, SubDescriptor, st->index);
 541
 542     mxf_write_local_tag(pb, 4, 0x3006);
 543     put_be32(pb, st->index);
 544
 545     mxf_write_local_tag(pb, 8, 0x3001);
 546     put_be32(pb, st->time_base.den);
 547     put_be32(pb, st->time_base.num);
 548
 549     mxf_write_local_tag(pb, 16, 0x3004);
 550     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);
 551
 552     mxf_write_local_tag(pb, 16, 0x3201);
 553     put_buffer(pb, *sc->codec_ul, 16);
 554 }
 555
 556 static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };
 557 static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };
 558
 559 static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)
 560 {
 561     ByteIOContext *pb = s->pb;
 562
 563     mxf_write_generic_desc(pb, st, mxf_mpegvideo_descriptor_key);
 564
 565     mxf_write_local_tag(pb, 4, 0x3203);
 566     put_be32(pb, st->codec->width);
 567
 568     mxf_write_local_tag(pb, 4, 0x3202);
 569     put_be32(pb, st->codec->height);
 570
 571     mxf_write_local_tag(pb, 8, 0x320E);
 572     put_be32(pb, st->codec->height * st->sample_aspect_ratio.den);
 573     put_be32(pb, st->codec->width  * st->sample_aspect_ratio.num);
 574 }
 575
 576 static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)
 577 {
 578     ByteIOContext *pb = s->pb;
 579
 580     mxf_write_generic_desc(pb, st, mxf_wav_descriptor_key);
 581
 582     // write audio sampling rate
 583     mxf_write_local_tag(pb, 8, 0x3D03);
 584     put_be32(pb, st->codec->sample_rate);
 585     put_be32(pb, 1);
 586
 587     mxf_write_local_tag(pb, 4, 0x3D07);
 588     put_be32(pb, st->codec->channels);
 589
 590     mxf_write_local_tag(pb, 4, 0x3D01);
 591     put_be32(pb, st->codec->bits_per_sample);
 592 }
 593
 594 static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)
 595 {
 596     ByteIOContext *pb = s->pb;
 597     int i;
 598
 599     if (type == MaterialPackage) {
 600         mxf_write_metadata_key(pb, 0x013600);
 601         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);
 602         klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);
 603     } else {
 604         mxf_write_metadata_key(pb, 0x013700);
 605         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);
 606         klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference
 607     }
 608
 609     // write uid
 610     mxf_write_local_tag(pb, 16, 0x3C0A);
 611     mxf_write_uuid(pb, type, 0);
 612     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);
 613     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);
 614
 615     // write package umid
 616     mxf_write_local_tag(pb, 32, 0x4401);
 617     mxf_write_umid(pb, type, 0);
 618     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);
 619
 620     // write create date
 621     mxf_write_local_tag(pb, 8, 0x4405);
 622     put_be64(pb, 0);
 623
 624     // write modified date
 625     mxf_write_local_tag(pb, 8, 0x4404);
 626     put_be64(pb, 0);
 627
 628     // write track refs
 629     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);
 630     mxf_write_refs_count(pb, s->nb_streams);
 631     for (i = 0; i < s->nb_streams; i++)
 632         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);
 633
 634     // write multiple descriptor reference
 635     if (type == SourcePackage) {
 636         mxf_write_local_tag(pb, 16, 0x4701);
 637         if (s->nb_streams > 1) {
 638             mxf_write_uuid(pb, MultipleDescriptor, 0);
 639             mxf_write_multi_descriptor(s);
 640         } else
 641             mxf_write_uuid(pb, SubDescriptor, 0);
 642     }
 643
 644     for (i = 0; i < s->nb_streams; i++) {
 645         AVStream *st = s->streams[i];
 646         mxf_write_track(s, st, type);
 647         mxf_write_sequence(s, st, type);
 648         mxf_write_structural_component(s, st, type);
 649
 650         if (type == SourcePackage) {
 651             MXFStreamContext *sc = st->priv_data;
 652             mxf_essence_container_uls[sc->index].write_desc(s, st);
 653         }
 654     }
 655 }
 656
 657 static int mxf_write_header_metadata_sets(AVFormatContext *s)
 658 {
 659     mxf_write_preface(s);
 660     mxf_write_identification(s);
 661     mxf_write_content_storage(s);
 662     mxf_write_package(s, MaterialPackage);
 663     mxf_write_package(s, SourcePackage);
 664     return 0;
 665 }
 666
 667 static void mxf_write_partition(AVFormatContext *s, int bodysid, const uint8_t *key, int write_metadata)
 668 {
 669     MXFContext *mxf = s->priv_data;
 670     ByteIOContext *pb = s->pb;
 671     int64_t header_byte_count_offset;
 672
 673     // write klv
 674     put_buffer(pb, key, 16);
 675
 676     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);
 677
 678     // write partition value
 679     put_be16(pb, 1); // majorVersion
 680     put_be16(pb, 2); // minorVersion
 681     put_be32(pb, 1); // kagSize
 682
 683     put_be64(pb, url_ftell(pb) - 25); // thisPartition
 684     put_be64(pb, 0); // previousPartition
 685
 686     put_be64(pb, mxf->footer_partition_offset); // footerPartition
 687
 688     // set offset
 689     header_byte_count_offset = url_ftell(pb);
 690     put_be64(pb, 0); // headerByteCount, update later
 691
 692     // no indexTable
 693     put_be64(pb, 0); // indexByteCount
 694     put_be32(pb, 0); // indexSID
 695     put_be64(pb, 0); // bodyOffset
 696
 697     put_be32(pb, bodysid); // bodySID
 698     put_buffer(pb, op1a_ul, 16); // operational pattern
 699
 700     // essence container
 701     mxf_write_essence_container_refs(s);
 702
 703     if (write_metadata) {
 704         // mark the start of the headermetadata and calculate metadata size
 705         int64_t pos, start = url_ftell(s->pb);
 706         mxf_write_primer_pack(s);
 707         mxf_write_header_metadata_sets(s);
 708         pos = url_ftell(s->pb);
 709         // update header_byte_count
 710         url_fseek(pb, header_byte_count_offset, SEEK_SET);
 711         put_be64(pb, pos - start);
 712         url_fseek(pb, pos, SEEK_SET);
 713     }
 714
 715     put_flush_packet(pb);
 716 }
 717
 718 static const UID mxf_mpeg2_codec_uls[] = {
 719     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame
 720     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP
 721     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame
 722     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP
 723     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame
 724     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP
 725     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame
 726     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP
 727 };
 728
 729 static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)
 730 {
 731     if (avctx->profile == 4) { // Main
 732         if (avctx->level == 8) // Main
 733             return avctx->gop_size ?
 734                 &mxf_mpeg2_codec_uls[1] :
 735                 &mxf_mpeg2_codec_uls[0];
 736         else if (avctx->level == 4) // High
 737             return avctx->gop_size ?
 738                 &mxf_mpeg2_codec_uls[5] :
 739                 &mxf_mpeg2_codec_uls[4];
 740     } else if (avctx->profile == 0) { // 422
 741         if (avctx->level == 5) // Main
 742             return avctx->gop_size ?
 743                 &mxf_mpeg2_codec_uls[3] :
 744                 &mxf_mpeg2_codec_uls[2];
 745         else if (avctx->level == 2) // High
 746             return avctx->gop_size ?
 747                 &mxf_mpeg2_codec_uls[7] :
 748                 &mxf_mpeg2_codec_uls[6];
 749     }
 750     return NULL;
 751 }
 752
 753 static int mxf_write_header(AVFormatContext *s)
 754 {
 755     MXFContext *mxf = s->priv_data;
 756     int i;
 757     uint8_t present[sizeof(mxf_essence_container_uls)/
 758                     sizeof(*mxf_essence_container_uls)] = {0};
 759
 760     for (i = 0; i < s->nb_streams; i++) {
 761         AVStream *st = s->streams[i];
 762         MXFStreamContext *sc = av_mallocz(sizeof(*sc));
 763         if (!sc)
 764             return AVERROR(ENOMEM);
 765         st->priv_data = sc;
 766         // set pts information
 767         if (st->codec->codec_type == CODEC_TYPE_VIDEO)
 768             av_set_pts_info(st, 64, 1, st->codec->time_base.den);
 769         else if (st->codec->codec_type == CODEC_TYPE_AUDIO)
 770             av_set_pts_info(st, 64, 1, st->codec->sample_rate);
 771         sc->duration = -1;
 772
 773         sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);
 774         if (sc->index == -1) {
 775             av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "
 776                    "codec not currently supported in container\n", i);
 777             return -1;
 778         }
 779
 780         if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
 781             if (st->codec->profile == FF_PROFILE_UNKNOWN ||
 782                 st->codec->level == FF_LEVEL_UNKNOWN) {
 783                 av_log(s, AV_LOG_ERROR, "track %d: profile and level must be set for mpeg-2\n", i);
 784                 return -1;
 785             }
 786             sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);
 787             if (!sc->codec_ul) {
 788                 av_log(s, AV_LOG_ERROR, "track %d: could not find codec ul for mpeg-2, "
 789                        "unsupported profile/level\n", i);
 790                 return -1;
 791             }
 792         } else
 793             sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;
 794
 795         if (!present[sc->index]) {
 796             mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;
 797             present[sc->index] = 1;
 798         } else
 799             present[sc->index]++;
 800         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);
 801         sc->track_essence_element_key[15] = present[sc->index];
 802         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);
 803     }
 804
 805     mxf_write_partition(s, 1, header_open_partition_key, 1);
 806
 807     return 0;
 808 }
 809
 810 static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)
 811 {
 812     ByteIOContext *pb = s->pb;
 813     AVStream *st = s->streams[pkt->stream_index];
 814     MXFStreamContext *sc = st->priv_data;
 815
 816     put_buffer(pb, sc->track_essence_element_key, 16); // write key
 817     klv_encode_ber_length(pb, pkt->size); // write length
 818     put_buffer(pb, pkt->data, pkt->size); // write value
 819
 820     sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);
 821
 822     put_flush_packet(pb);
 823     return 0;
 824 }
 825
 826 static int mxf_write_footer(AVFormatContext *s)
 827 {
 828     MXFContext *mxf = s->priv_data;
 829     ByteIOContext *pb = s->pb;
 830
 831     mxf->footer_partition_offset = url_ftell(pb);
 832     mxf_write_partition(s, 0, footer_partition_key, 0);
 833     if (!url_is_streamed(s->pb)) {
 834         url_fseek(pb, 0, SEEK_SET);
 835         mxf_write_partition(s, 1, header_closed_partition_key, 1);
 836     }
 837     mxf_free(s);
 838     return 0;
 839 }
 840
 841 AVOutputFormat mxf_muxer = {
 842     "mxf",
 843     NULL_IF_CONFIG_SMALL("Material eXchange Format"),
 844     NULL,
 845     "mxf",
 846     sizeof(MXFContext),
 847     CODEC_ID_PCM_S16LE,
 848     CODEC_ID_MPEG2VIDEO,
 849     mxf_write_header,
 850     mxf_write_packet,
 851     mxf_write_footer,
 852 };
 853
 854