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FFmpeg/libavformat/mxfenc.c

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  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[FF_ARRAY_ELEMS(mxf_essence_container_uls)];

  78. } MXFContext;

  79. 

  80. static const uint8_t uuid_base[]            = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd };

  81. static const uint8_t umid_base[]            = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x01,0x0D,0x00,0x13,0x00,0x00,0x00 };

  82. 

  83. /**

  84.  * complete key for operation pattern, partitions, and primer pack

  85.  */

  86. static const uint8_t op1a_ul[]              = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 };

  87. static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete

  88. static const uint8_t primer_pack_key[]      = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 };

  89. 

  90. 

  91. 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

  92. 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

  93. 

  94. /**

  95.  * partial key for header metadata

  96.  */

  97. static const uint8_t header_metadata_key[]  = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 };

  98. 

  99. static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 };

  100. 

  101. /**

  102.  * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html

  103.  */

  104. static const MXFLocalTagPair mxf_local_tag_batch[] = {

  105.     // preface set

  106.     { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */

  107.     { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */

  108.     { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */

  109.     { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */

  110.     { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */

  111.     { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */

  112.     { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */

  113.     { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */

  114.     // Identification

  115.     { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */

  116.     { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */

  117.     { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */

  118.     { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */

  119.     { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */

  120.     { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */

  121.     // Content Storage

  122.     { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */

  123.     // Essence Container Data

  124.     { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */

  125.     { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */

  126.     // Package

  127.     { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */

  128.     { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */

  129.     { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */

  130.     { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */

  131.     { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */

  132.     // Track

  133.     { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */

  134.     { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */

  135.     { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */

  136.     { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */

  137.     { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */

  138.     // Sequence

  139.     { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */

  140.     { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */

  141.     { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */

  142.     // Source Clip

  143.     { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x04,0x00,0x00}}, /* Start position */

  144.     { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */

  145.     { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */

  146.     // File Descriptor

  147.     { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */

  148.     { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */

  149.     { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */

  150.     { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */

  151.     // Generic Picture Essence Descriptor

  152.     { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */

  153.     { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */

  154.     { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */

  155.     { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */

  156.     // Generic Sound Essence Descriptor

  157.     { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */

  158.     { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */

  159.     { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */

  160.     { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x02,0x04,0x02,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */

  161. };

  162. 

  163. static void mxf_write_uuid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)

  164. {

  165.     put_buffer(pb, uuid_base, 12);

  166.     put_be16(pb, type);

  167.     put_be16(pb, value);

  168. }

  169. 

  170. static void mxf_write_umid(ByteIOContext *pb, enum MXFMetadataSetType type, int value)

  171. {

  172.     put_buffer(pb, umid_base, 16);

  173.     mxf_write_uuid(pb, type, value);

  174. }

  175. 

  176. static void mxf_write_refs_count(ByteIOContext *pb, int ref_count)

  177. {

  178.     put_be32(pb, ref_count);

  179.     put_be32(pb, 16);

  180. }

  181. 

  182. static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len)

  183. {

  184.     // Determine the best BER size

  185.     int size;

  186.     if (len < 128) {

  187.         //short form

  188.         put_byte(pb, len);

  189.         return 1;

  190.     }

  191. 

  192.     size = (av_log2(len) >> 3) + 1;

  193. 

  194.     // long form

  195.     put_byte(pb, 0x80 + size);

  196.     while(size) {

  197.         size --;

  198.         put_byte(pb, len >> 8 * size & 0xff);

  199.     }

  200.     return 0;

  201. }

  202. 

  203. /*

  204.  * Get essence container ul index

  205.  */

  206. static int mxf_get_essence_container_ul_index(enum CodecID id)

  207. {

  208.     int i;

  209.     for (i = 0; i < FF_ARRAY_ELEMS(mxf_essence_container_uls); i++)

  210.         if (mxf_essence_container_uls[i].id == id)

  211.             return i;

  212.     return -1;

  213. }

  214. 

  215. static void mxf_write_primer_pack(AVFormatContext *s)

  216. {

  217.     ByteIOContext *pb = s->pb;

  218.     int local_tag_number, i = 0;

  219. 

  220.     local_tag_number = FF_ARRAY_ELEMS(mxf_local_tag_batch);

  221. 

  222.     put_buffer(pb, primer_pack_key, 16);

  223.     klv_encode_ber_length(pb, local_tag_number * 18 + 8);

  224. 

  225.     put_be32(pb, local_tag_number); // local_tag num

  226.     put_be32(pb, 18); // item size, always 18 according to the specs

  227. 

  228.     for (i = 0; i < local_tag_number; i++) {

  229.         put_be16(pb, mxf_local_tag_batch[i].local_tag);

  230.         put_buffer(pb, mxf_local_tag_batch[i].uid, 16);

  231.     }

  232. }

  233. 

  234. static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag)

  235. {

  236.     put_be16(pb, tag);

  237.     put_be16(pb, size);

  238. }

  239. 

  240. static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value)

  241. {

  242.     put_buffer(pb, header_metadata_key, 13);

  243.     put_be24(pb, value);

  244. }

  245. 

  246. static void mxf_free(AVFormatContext *s)

  247. {

  248.     int i;

  249. 

  250.     for (i = 0; i < s->nb_streams; i++) {

  251.         AVStream *st = s->streams[i];

  252.         av_freep(&st->priv_data);

  253.     }

  254. }

  255. 

  256. static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type)

  257. {

  258.     const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls;

  259.     while (uls->type != CODEC_TYPE_DATA) {

  260.         if (type == uls->type)

  261.             break;

  262.         uls++;

  263.     }

  264.     return uls;

  265. }

  266. 

  267. static void mxf_write_essence_container_refs(AVFormatContext *s)

  268. {

  269.     MXFContext *c = s->priv_data;

  270.     ByteIOContext *pb = s->pb;

  271.     int i;

  272. 

  273.     mxf_write_refs_count(pb, c->essence_container_count);

  274.     av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count);

  275.     for (i = 0; i < c->essence_container_count; i++) {

  276.         put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16);

  277.         PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul);

  278.     }

  279. }

  280. 

  281. static void mxf_write_preface(AVFormatContext *s)

  282. {

  283.     MXFContext *mxf = s->priv_data;

  284.     ByteIOContext *pb = s->pb;

  285. 

  286.     mxf_write_metadata_key(pb, 0x012f00);

  287.     PRINT_KEY(s, "preface key", pb->buf_ptr - 16);

  288.     klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count);

  289. 

  290.     // write preface set uid

  291.     mxf_write_local_tag(pb, 16, 0x3C0A);

  292.     mxf_write_uuid(pb, Preface, 0);

  293.     PRINT_KEY(s, "preface uid", pb->buf_ptr - 16);

  294. 

  295.     // write create date as unknown

  296.     mxf_write_local_tag(pb, 8, 0x3B02);

  297.     put_be64(pb, 0);

  298. 

  299.     // write version

  300.     mxf_write_local_tag(pb, 2, 0x3B05);

  301.     put_be16(pb, 1);

  302. 

  303.     // write identification_refs

  304.     mxf_write_local_tag(pb, 16 + 8, 0x3B06);

  305.     mxf_write_refs_count(pb, 1);

  306.     mxf_write_uuid(pb, Identification, 0);

  307. 

  308.     // write content_storage_refs

  309.     mxf_write_local_tag(pb, 16, 0x3B03);

  310.     mxf_write_uuid(pb, ContentStorage, 0);

  311. 

  312.     mxf_write_local_tag(pb, 16, 0x3B09);

  313.     put_buffer(pb, op1a_ul, 16);

  314. 

  315.     // write essence_container_refs

  316.     mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A);

  317.     mxf_write_essence_container_refs(s);

  318. 

  319.     // write dm_scheme_refs

  320.     mxf_write_local_tag(pb, 8, 0x3B0B);

  321.     put_be64(pb, 0);

  322. }

  323. 

  324. /*

  325.  * Write a local tag containing an ascii string as utf-16

  326.  */

  327. static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value)

  328. {

  329.     int i, size = strlen(value);

  330.     mxf_write_local_tag(pb, size*2, tag);

  331.     for (i = 0; i < size; i++)

  332.         put_be16(pb, value[i]);

  333. }

  334. 

  335. static void mxf_write_identification(AVFormatContext *s)

  336. {

  337.     ByteIOContext *pb = s->pb;

  338.     const char *company = "FFmpeg";

  339.     const char *product = "OP1a Muxer";

  340.     const char *version;

  341.     int length;

  342. 

  343.     mxf_write_metadata_key(pb, 0x013000);

  344.     PRINT_KEY(s, "identification key", pb->buf_ptr - 16);

  345. 

  346.     version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ?

  347.         "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);

  348.     length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16

  349.     klv_encode_ber_length(pb, length);

  350. 

  351.     // write uid

  352.     mxf_write_local_tag(pb, 16, 0x3C0A);

  353.     mxf_write_uuid(pb, Identification, 0);

  354.     PRINT_KEY(s, "identification uid", pb->buf_ptr - 16);

  355. 

  356.     // write generation uid

  357.     mxf_write_local_tag(pb, 16, 0x3C09);

  358.     mxf_write_uuid(pb, Identification, 1);

  359. 

  360.     mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name

  361.     mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name

  362.     mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String

  363. 

  364.     // write product uid

  365.     mxf_write_local_tag(pb, 16, 0x3C05);

  366.     mxf_write_uuid(pb, Identification, 2);

  367. 

  368.     // write modified date

  369.     mxf_write_local_tag(pb, 8, 0x3C06);

  370.     put_be64(pb, 0);

  371. }

  372. 

  373. static void mxf_write_content_storage(AVFormatContext *s)

  374. {

  375.     ByteIOContext *pb = s->pb;

  376. 

  377.     mxf_write_metadata_key(pb, 0x011800);

  378.     PRINT_KEY(s, "content storage key", pb->buf_ptr - 16);

  379.     klv_encode_ber_length(pb, 64);

  380. 

  381.     // write uid

  382.     mxf_write_local_tag(pb, 16, 0x3C0A);

  383.     mxf_write_uuid(pb, ContentStorage, 0);

  384.     PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16);

  385. 

  386.     // write package reference

  387.     mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901);

  388.     mxf_write_refs_count(pb, 2);

  389.     mxf_write_uuid(pb, MaterialPackage, 0);

  390.     mxf_write_uuid(pb, SourcePackage, 0);

  391. }

  392. 

  393. static void mxf_write_track(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)

  394. {

  395.     ByteIOContext *pb = s->pb;

  396.     MXFStreamContext *sc = st->priv_data;

  397. 

  398.     mxf_write_metadata_key(pb, 0x013b00);

  399.     PRINT_KEY(s, "track key", pb->buf_ptr - 16);

  400.     klv_encode_ber_length(pb, 80);

  401. 

  402.     // write track uid

  403.     mxf_write_local_tag(pb, 16, 0x3C0A);

  404.     mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, st->index);

  405.     PRINT_KEY(s, "track uid", pb->buf_ptr - 16);

  406. 

  407.     // write track id

  408.     mxf_write_local_tag(pb, 4, 0x4801);

  409.     put_be32(pb, st->index);

  410. 

  411.     // write track number

  412.     mxf_write_local_tag(pb, 4, 0x4804);

  413.     if (type == MaterialPackage)

  414.         put_be32(pb, 0); // track number of material package is 0

  415.     else

  416.         put_buffer(pb, sc->track_essence_element_key + 12, 4);

  417. 

  418.     mxf_write_local_tag(pb, 8, 0x4B01);

  419.     put_be32(pb, st->time_base.den);

  420.     put_be32(pb, st->time_base.num);

  421. 

  422.     // write origin

  423.     mxf_write_local_tag(pb, 8, 0x4B02);

  424.     put_be64(pb, 0);

  425. 

  426.     // write sequence refs

  427.     mxf_write_local_tag(pb, 16, 0x4803);

  428.     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);

  429. }

  430. 

  431. static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st)

  432. {

  433.     const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type);

  434.     MXFStreamContext *sc = st->priv_data;

  435. 

  436.     // find data define uls

  437.     mxf_write_local_tag(pb, 16, 0x0201);

  438.     put_buffer(pb, data_def_ul->uid, 16);

  439. 

  440.     // write duration

  441.     mxf_write_local_tag(pb, 8, 0x0202);

  442.     put_be64(pb, sc->duration);

  443. }

  444. 

  445. static void mxf_write_sequence(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)

  446. {

  447.     ByteIOContext *pb = s->pb;

  448. 

  449.     mxf_write_metadata_key(pb, 0x010f00);

  450.     PRINT_KEY(s, "sequence key", pb->buf_ptr - 16);

  451.     klv_encode_ber_length(pb, 80);

  452. 

  453.     mxf_write_local_tag(pb, 16, 0x3C0A);

  454.     mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, st->index);

  455. 

  456.     PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16);

  457.     mxf_write_common_fields(pb, st);

  458. 

  459.     // write structural component

  460.     mxf_write_local_tag(pb, 16 + 8, 0x1001);

  461.     mxf_write_refs_count(pb, 1);

  462.     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);

  463. }

  464. 

  465. static void mxf_write_structural_component(AVFormatContext *s, AVStream *st, enum MXFMetadataSetType type)

  466. {

  467.     ByteIOContext *pb = s->pb;

  468.     int i;

  469. 

  470.     mxf_write_metadata_key(pb, 0x011100);

  471.     PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16);

  472.     klv_encode_ber_length(pb, 108);

  473. 

  474.     // write uid

  475.     mxf_write_local_tag(pb, 16, 0x3C0A);

  476.     mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, st->index);

  477. 

  478.     PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16);

  479.     mxf_write_common_fields(pb, st);

  480. 

  481.     // write start_position

  482.     mxf_write_local_tag(pb, 8, 0x1201);

  483.     put_be64(pb, 0);

  484. 

  485.     // write source package uid, end of the reference

  486.     mxf_write_local_tag(pb, 32, 0x1101);

  487.     if (type == SourcePackage) {

  488.         for (i = 0; i < 4; i++)

  489.             put_be64(pb, 0);

  490.     } else

  491.         mxf_write_umid(pb, SourcePackage, 0);

  492. 

  493.     // write source track id

  494.     mxf_write_local_tag(pb, 4, 0x1102);

  495.     if (type == SourcePackage)

  496.         put_be32(pb, 0);

  497.     else

  498.         put_be32(pb, st->index);

  499. }

  500. 

  501. static void mxf_write_multi_descriptor(AVFormatContext *s)

  502. {

  503.     ByteIOContext *pb = s->pb;

  504.     int i;

  505. 

  506.     mxf_write_metadata_key(pb, 0x014400);

  507.     PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16);

  508.     klv_encode_ber_length(pb, 64 + 16 * s->nb_streams);

  509. 

  510.     mxf_write_local_tag(pb, 16, 0x3C0A);

  511.     mxf_write_uuid(pb, MultipleDescriptor, 0);

  512.     PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16);

  513. 

  514.     // write sample rate

  515.     mxf_write_local_tag(pb, 8, 0x3001);

  516.     put_be32(pb, s->streams[0]->time_base.den);

  517.     put_be32(pb, s->streams[0]->time_base.num);

  518. 

  519.     // write essence container ul

  520.     mxf_write_local_tag(pb, 16, 0x3004);

  521.     put_buffer(pb, multiple_desc_ul, 16);

  522. 

  523.     // write sub descriptor refs

  524.     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01);

  525.     mxf_write_refs_count(pb, s->nb_streams);

  526.     for (i = 0; i < s->nb_streams; i++)

  527.         mxf_write_uuid(pb, SubDescriptor, i);

  528. }

  529. 

  530. static void mxf_write_generic_desc(ByteIOContext *pb, AVStream *st, const UID key)

  531. {

  532.     MXFStreamContext *sc = st->priv_data;

  533. 

  534.     put_buffer(pb, key, 16);

  535.     klv_encode_ber_length(pb, 108);

  536. 

  537.     mxf_write_local_tag(pb, 16, 0x3C0A);

  538.     mxf_write_uuid(pb, SubDescriptor, st->index);

  539. 

  540.     mxf_write_local_tag(pb, 4, 0x3006);

  541.     put_be32(pb, st->index);

  542. 

  543.     mxf_write_local_tag(pb, 8, 0x3001);

  544.     put_be32(pb, st->time_base.den);

  545.     put_be32(pb, st->time_base.num);

  546. 

  547.     mxf_write_local_tag(pb, 16, 0x3004);

  548.     put_buffer(pb, mxf_essence_container_uls[sc->index].container_ul, 16);

  549. 

  550.     mxf_write_local_tag(pb, 16, 0x3201);

  551.     put_buffer(pb, *sc->codec_ul, 16);

  552. }

  553. 

  554. static const UID mxf_mpegvideo_descriptor_key = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 };

  555. static const UID mxf_wav_descriptor_key       = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 };

  556. 

  557. static void mxf_write_mpegvideo_desc(AVFormatContext *s, AVStream *st)

  558. {

  559.     ByteIOContext *pb = s->pb;

  560. 

  561.     mxf_write_generic_desc(pb, st, mxf_mpegvideo_descriptor_key);

  562. 

  563.     mxf_write_local_tag(pb, 4, 0x3203);

  564.     put_be32(pb, st->codec->width);

  565. 

  566.     mxf_write_local_tag(pb, 4, 0x3202);

  567.     put_be32(pb, st->codec->height);

  568. 

  569.     mxf_write_local_tag(pb, 8, 0x320E);

  570.     put_be32(pb, st->codec->height * st->sample_aspect_ratio.den);

  571.     put_be32(pb, st->codec->width  * st->sample_aspect_ratio.num);

  572. }

  573. 

  574. static void mxf_write_wav_desc(AVFormatContext *s, AVStream *st)

  575. {

  576.     ByteIOContext *pb = s->pb;

  577. 

  578.     mxf_write_generic_desc(pb, st, mxf_wav_descriptor_key);

  579. 

  580.     // write audio sampling rate

  581.     mxf_write_local_tag(pb, 8, 0x3D03);

  582.     put_be32(pb, st->codec->sample_rate);

  583.     put_be32(pb, 1);

  584. 

  585.     mxf_write_local_tag(pb, 4, 0x3D07);

  586.     put_be32(pb, st->codec->channels);

  587. 

  588.     mxf_write_local_tag(pb, 4, 0x3D01);

  589.     put_be32(pb, st->codec->bits_per_coded_sample);

  590. }

  591. 

  592. static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type)

  593. {

  594.     ByteIOContext *pb = s->pb;

  595.     int i;

  596. 

  597.     if (type == MaterialPackage) {

  598.         mxf_write_metadata_key(pb, 0x013600);

  599.         PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16);

  600.         klv_encode_ber_length(pb, 92 + 16 * s->nb_streams);

  601.     } else {

  602.         mxf_write_metadata_key(pb, 0x013700);

  603.         PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16);

  604.         klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference

  605.     }

  606. 

  607.     // write uid

  608.     mxf_write_local_tag(pb, 16, 0x3C0A);

  609.     mxf_write_uuid(pb, type, 0);

  610.     av_log(s,AV_LOG_DEBUG, "package type:%d\n", type);

  611.     PRINT_KEY(s, "package uid", pb->buf_ptr - 16);

  612. 

  613.     // write package umid

  614.     mxf_write_local_tag(pb, 32, 0x4401);

  615.     mxf_write_umid(pb, type, 0);

  616.     PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16);

  617. 

  618.     // write create date

  619.     mxf_write_local_tag(pb, 8, 0x4405);

  620.     put_be64(pb, 0);

  621. 

  622.     // write modified date

  623.     mxf_write_local_tag(pb, 8, 0x4404);

  624.     put_be64(pb, 0);

  625. 

  626.     // write track refs

  627.     mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403);

  628.     mxf_write_refs_count(pb, s->nb_streams);

  629.     for (i = 0; i < s->nb_streams; i++)

  630.         mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i);

  631. 

  632.     // write multiple descriptor reference

  633.     if (type == SourcePackage) {

  634.         mxf_write_local_tag(pb, 16, 0x4701);

  635.         if (s->nb_streams > 1) {

  636.             mxf_write_uuid(pb, MultipleDescriptor, 0);

  637.             mxf_write_multi_descriptor(s);

  638.         } else

  639.             mxf_write_uuid(pb, SubDescriptor, 0);

  640.     }

  641. 

  642.     for (i = 0; i < s->nb_streams; i++) {

  643.         AVStream *st = s->streams[i];

  644.         mxf_write_track(s, st, type);

  645.         mxf_write_sequence(s, st, type);

  646.         mxf_write_structural_component(s, st, type);

  647. 

  648.         if (type == SourcePackage) {

  649.             MXFStreamContext *sc = st->priv_data;

  650.             mxf_essence_container_uls[sc->index].write_desc(s, st);

  651.         }

  652.     }

  653. }

  654. 

  655. static int mxf_write_header_metadata_sets(AVFormatContext *s)

  656. {

  657.     mxf_write_preface(s);

  658.     mxf_write_identification(s);

  659.     mxf_write_content_storage(s);

  660.     mxf_write_package(s, MaterialPackage);

  661.     mxf_write_package(s, SourcePackage);

  662.     return 0;

  663. }

  664. 

  665. static void mxf_write_partition(AVFormatContext *s, int bodysid, const uint8_t *key, int write_metadata)

  666. {

  667.     MXFContext *mxf = s->priv_data;

  668.     ByteIOContext *pb = s->pb;

  669.     int64_t header_byte_count_offset;

  670. 

  671.     // write klv

  672.     put_buffer(pb, key, 16);

  673. 

  674.     klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count);

  675. 

  676.     // write partition value

  677.     put_be16(pb, 1); // majorVersion

  678.     put_be16(pb, 2); // minorVersion

  679.     put_be32(pb, 1); // kagSize

  680. 

  681.     put_be64(pb, url_ftell(pb) - 25); // thisPartition

  682.     put_be64(pb, 0); // previousPartition

  683. 

  684.     put_be64(pb, mxf->footer_partition_offset); // footerPartition

  685. 

  686.     // set offset

  687.     header_byte_count_offset = url_ftell(pb);

  688.     put_be64(pb, 0); // headerByteCount, update later

  689. 

  690.     // no indexTable

  691.     put_be64(pb, 0); // indexByteCount

  692.     put_be32(pb, 0); // indexSID

  693.     put_be64(pb, 0); // bodyOffset

  694. 

  695.     put_be32(pb, bodysid); // bodySID

  696.     put_buffer(pb, op1a_ul, 16); // operational pattern

  697. 

  698.     // essence container

  699.     mxf_write_essence_container_refs(s);

  700. 

  701.     if (write_metadata) {

  702.         // mark the start of the headermetadata and calculate metadata size

  703.         int64_t pos, start = url_ftell(s->pb);

  704.         mxf_write_primer_pack(s);

  705.         mxf_write_header_metadata_sets(s);

  706.         pos = url_ftell(s->pb);

  707.         // update header_byte_count

  708.         url_fseek(pb, header_byte_count_offset, SEEK_SET);

  709.         put_be64(pb, pos - start);

  710.         url_fseek(pb, pos, SEEK_SET);

  711.     }

  712. 

  713.     put_flush_packet(pb);

  714. }

  715. 

  716. static const UID mxf_mpeg2_codec_uls[] = {

  717.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x10,0x00 }, // MP-ML I-Frame

  718.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, // MP-ML Long GOP

  719.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, // 422P-ML I-Frame

  720.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, // 422P-ML Long GOP

  721.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x02,0x00 }, // MP-HL I-Frame

  722.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, // MP-HL Long GOP

  723.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x02,0x00 }, // 422P-HL I-Frame

  724.     { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, // 422P-HL Long GOP

  725. };

  726. 

  727. static const UID *mxf_get_mpeg2_codec_ul(AVCodecContext *avctx)

  728. {

  729.     if (avctx->profile == 4) { // Main

  730.         if (avctx->level == 8) // Main

  731.             return avctx->gop_size ?

  732.                 &mxf_mpeg2_codec_uls[1] :

  733.                 &mxf_mpeg2_codec_uls[0];

  734.         else if (avctx->level == 4) // High

  735.             return avctx->gop_size ?

  736.                 &mxf_mpeg2_codec_uls[5] :

  737.                 &mxf_mpeg2_codec_uls[4];

  738.     } else if (avctx->profile == 0) { // 422

  739.         if (avctx->level == 5) // Main

  740.             return avctx->gop_size ?

  741.                 &mxf_mpeg2_codec_uls[3] :

  742.                 &mxf_mpeg2_codec_uls[2];

  743.         else if (avctx->level == 2) // High

  744.             return avctx->gop_size ?

  745.                 &mxf_mpeg2_codec_uls[7] :

  746.                 &mxf_mpeg2_codec_uls[6];

  747.     }

  748.     return NULL;

  749. }

  750. 

  751. static int mxf_write_header(AVFormatContext *s)

  752. {

  753.     MXFContext *mxf = s->priv_data;

  754.     int i;

  755.     uint8_t present[FF_ARRAY_ELEMS(mxf_essence_container_uls)] = {0};

  756. 

  757.     for (i = 0; i < s->nb_streams; i++) {

  758.         AVStream *st = s->streams[i];

  759.         MXFStreamContext *sc = av_mallocz(sizeof(*sc));

  760.         if (!sc)

  761.             return AVERROR(ENOMEM);

  762.         st->priv_data = sc;

  763.         // set pts information

  764.         if (st->codec->codec_type == CODEC_TYPE_VIDEO)

  765.             av_set_pts_info(st, 64, 1, st->codec->time_base.den);

  766.         else if (st->codec->codec_type == CODEC_TYPE_AUDIO)

  767.             av_set_pts_info(st, 64, 1, st->codec->sample_rate);

  768.         sc->duration = -1;

  769. 

  770.         sc->index = mxf_get_essence_container_ul_index(st->codec->codec_id);

  771.         if (sc->index == -1) {

  772.             av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, "

  773.                    "codec not currently supported in container\n", i);

  774.             return -1;

  775.         }

  776. 

  777.         if (st->codec->codec_id == CODEC_ID_MPEG2VIDEO) {

  778.             if (st->codec->profile == FF_PROFILE_UNKNOWN ||

  779.                 st->codec->level == FF_LEVEL_UNKNOWN) {

  780.                 av_log(s, AV_LOG_ERROR, "track %d: profile and level must be set for mpeg-2\n", i);

  781.                 return -1;

  782.             }

  783.             sc->codec_ul = mxf_get_mpeg2_codec_ul(st->codec);

  784.             if (!sc->codec_ul) {

  785.                 av_log(s, AV_LOG_ERROR, "track %d: could not find codec ul for mpeg-2, "

  786.                        "unsupported profile/level\n", i);

  787.                 return -1;

  788.             }

  789.         } else

  790.             sc->codec_ul = &mxf_essence_container_uls[sc->index].codec_ul;

  791. 

  792.         if (!present[sc->index]) {

  793.             mxf->essence_containers_indices[mxf->essence_container_count++] = sc->index;

  794.             present[sc->index] = 1;

  795.         } else

  796.             present[sc->index]++;

  797.         memcpy(sc->track_essence_element_key, mxf_essence_container_uls[sc->index].element_ul, 15);

  798.         sc->track_essence_element_key[15] = present[sc->index];

  799.         PRINT_KEY(s, "track essence element key", sc->track_essence_element_key);

  800.     }

  801. 

  802.     mxf_write_partition(s, 1, header_open_partition_key, 1);

  803. 

  804.     return 0;

  805. }

  806. 

  807. static int mxf_write_packet(AVFormatContext *s, AVPacket *pkt)

  808. {

  809.     ByteIOContext *pb = s->pb;

  810.     AVStream *st = s->streams[pkt->stream_index];

  811.     MXFStreamContext *sc = st->priv_data;

  812. 

  813.     put_buffer(pb, sc->track_essence_element_key, 16); // write key

  814.     klv_encode_ber_length(pb, pkt->size); // write length

  815.     put_buffer(pb, pkt->data, pkt->size); // write value

  816. 

  817.     sc->duration = FFMAX(pkt->pts + pkt->duration, sc->duration);

  818. 

  819.     put_flush_packet(pb);

  820.     return 0;

  821. }

  822. 

  823. static int mxf_write_footer(AVFormatContext *s)

  824. {

  825.     MXFContext *mxf = s->priv_data;

  826.     ByteIOContext *pb = s->pb;

  827. 

  828.     mxf->footer_partition_offset = url_ftell(pb);

  829.     mxf_write_partition(s, 0, footer_partition_key, 0);

  830.     if (!url_is_streamed(s->pb)) {

  831.         url_fseek(pb, 0, SEEK_SET);

  832.         mxf_write_partition(s, 1, header_closed_partition_key, 1);

  833.     }

  834.     mxf_free(s);

  835.     return 0;

  836. }

  837. 

  838. AVOutputFormat mxf_muxer = {

  839.     "mxf",

  840.     NULL_IF_CONFIG_SMALL("Material eXchange Format"),

  841.     NULL,

  842.     "mxf",

  843.     sizeof(MXFContext),

  844.     CODEC_ID_PCM_S16LE,

  845.     CODEC_ID_MPEG2VIDEO,

  846.     mxf_write_header,

  847.     mxf_write_packet,

  848.     mxf_write_footer,

  849. };

  850.