/* * MXF muxer * Copyright (c) 2008 GUCAS, Zhentan Feng * * This file is part of FFmpeg. * * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /* * References * SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value * SMPTE 377M MXF File Format Specifications * SMPTE 379M MXF Generic Container * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container * SMPTE RP210: SMPTE Metadata Dictionary * SMPTE RP224: Registry of SMPTE Universal Labels */ //#define DEBUG #include "mxf.h" typedef struct { int local_tag; UID uid; } MXFLocalTagPair; typedef struct { UID track_essence_element_key; const UID *essence_container_ul; } MXFStreamContext; typedef struct { UID container_ul; UID element_ul; enum CodecID id; } MXFContainerEssencePair; static const MXFContainerEssencePair mxf_essence_container_uls[] = { { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x02,0x0D,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, CODEC_ID_MPEG2VIDEO }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 }, CODEC_ID_PCM_S16LE }, { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, CODEC_ID_NONE }, }; typedef struct MXFContext { int64_t header_byte_count; int64_t header_byte_count_offset; int64_t header_footer_partition_offset; int essence_container_count; uint8_t essence_containers_indices[sizeof(mxf_essence_container_uls)/ sizeof(*mxf_essence_container_uls)]; } MXFContext; typedef struct { const UID key; void (*write)(); enum CodecType type; } MXFDescriptorWriteTableEntry; static const uint8_t uuid_base[] = { 0xAD,0xAB,0x44,0x24,0x2f,0x25,0x4d,0xc7,0x92,0xff,0x29,0xbd }; static const uint8_t umid_base[] = { 0x06,0x0A,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x0F,0x00,0x13,0x00,0x00,0x00 }; /** * complete key for operation pattern, partitions, and primer pack */ static const uint8_t op1a_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x01,0x01,0x00 }; static const uint8_t header_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x02,0x04,0x00 }; // ClosedComplete static const uint8_t footer_partition_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x04,0x04,0x00 }; // ClosedComplete static const uint8_t primer_pack_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x02,0x01,0x01,0x05,0x01,0x00 }; /** * partial key for header metadata */ static const uint8_t header_metadata_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0D,0x01,0x01,0x01,0x01 }; static const MXFCodecUL mxf_essence_element_key[] = { { { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x15,0x01,0x05,0x00 }, 14, CODEC_ID_MPEG2VIDEO}, { { 0x06,0x0E,0x2B,0x34,0x01,0x02,0x01,0x01,0x0D,0x01,0x03,0x01,0x16,0x01,0x01,0x00 }, 14, CODEC_ID_PCM_S16LE}, { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, CODEC_ID_NONE}, }; static const uint8_t multiple_desc_ul[] = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x0D,0x01,0x03,0x01,0x02,0x7F,0x01,0x00 }; /** * SMPTE RP210 http://www.smpte-ra.org/mdd/index.html */ static const MXFLocalTagPair mxf_local_tag_batch[] = { // preface set { 0x3C0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x02,0x00,0x00,0x00,0x00}}, /* Instance UID */ { 0x3B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x04,0x00,0x00}}, /* Last Modified Date */ { 0x3B05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x03,0x01,0x02,0x01,0x05,0x00,0x00,0x00}}, /* Version */ { 0x3B06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x04,0x00,0x00}}, /* Identifications reference */ { 0x3B03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x01,0x00,0x00}}, /* Content Storage reference */ { 0x3B09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x03,0x00,0x00,0x00,0x00}}, /* Operational Pattern UL */ { 0x3B0A, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x01,0x00,0x00}}, /* Essence Containers UL batch */ { 0x3B0B, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x01,0x02,0x02,0x10,0x02,0x02,0x00,0x00}}, /* DM Schemes UL batch */ // Identification { 0x3C09, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x01,0x00,0x00,0x00}}, /* This Generation UID */ { 0x3C01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x02,0x01,0x00,0x00}}, /* Company Name */ { 0x3C02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x03,0x01,0x00,0x00}}, /* Product Name */ { 0x3C04, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x05,0x01,0x00,0x00}}, /* Version String */ { 0x3C05, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x20,0x07,0x01,0x07,0x00,0x00,0x00}}, /* Product ID */ { 0x3C06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x03,0x00,0x00}}, /* Modification Date */ // Content Storage { 0x1901, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x05,0x01,0x00,0x00}}, /* Package strong reference batch */ // Essence Container Data { 0x2701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x06,0x01,0x00,0x00,0x00}}, /* Linked Package UID */ { 0x3F07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x01,0x03,0x04,0x04,0x00,0x00,0x00,0x00}}, /* BodySID */ // Package { 0x4401, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x01,0x01,0x15,0x10,0x00,0x00,0x00,0x00}}, /* Package UID */ { 0x4405, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x01,0x03,0x00,0x00}}, /* Package Creation Date */ { 0x4404, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x10,0x02,0x05,0x00,0x00}}, /* Package Modified Date */ { 0x4403, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x05,0x00,0x00}}, /* Tracks Strong reference array */ { 0x4701, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x03,0x00,0x00}}, /* Descriptor */ // Track { 0x4801, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x07,0x01,0x01,0x00,0x00,0x00,0x00}}, /* Track ID */ { 0x4804, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x01,0x04,0x01,0x03,0x00,0x00,0x00,0x00}}, /* Track Number */ { 0x4B01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x05,0x30,0x04,0x05,0x00,0x00,0x00,0x00}}, /* Edit Rate */ { 0x4B02, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x01,0x03,0x01,0x03,0x00,0x00}}, /* Origin */ { 0x4803, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x02,0x04,0x00,0x00}}, /* Sequence reference */ // Sequence { 0x0201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x07,0x01,0x00,0x00,0x00,0x00,0x00}}, /* Data Definition UL */ { 0x0202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x07,0x02,0x02,0x01,0x01,0x03,0x00,0x00}}, /* Duration */ { 0x1001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x06,0x09,0x00,0x00}}, /* Structural Components reference array */ // Source Clip { 0x1201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x07,0x02,0x01,0x03,0x01,0x0A,0x00,0x00}}, /* Start position */ { 0x1101, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x01,0x00,0x00,0x00}}, /* SourcePackageID */ { 0x1102, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x03,0x02,0x00,0x00,0x00}}, /* SourceTrackID */ // File Descriptor { 0x3F01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x04,0x06,0x0B,0x00,0x00}}, /* Sub Descriptors reference array */ { 0x3006, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x06,0x01,0x01,0x03,0x05,0x00,0x00,0x00}}, /* Linked Track ID */ { 0x3001, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x06,0x01,0x01,0x00,0x00,0x00,0x00}}, /* SampleRate */ { 0x3004, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x06,0x01,0x01,0x04,0x01,0x02,0x00,0x00}}, /* Essence Container */ // Generic Picture Essence Descriptor { 0x3203, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x02,0x00,0x00,0x00}}, /* Stored Width */ { 0x3202, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x05,0x02,0x01,0x00,0x00,0x00}}, /* Stored Height */ { 0x320E, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x01,0x04,0x01,0x01,0x01,0x01,0x00,0x00,0x00}}, /* Aspect Ratio */ { 0x3201, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Picture Essence Coding */ // Generic Sound Essence Descriptor { 0x3D03, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x03,0x01,0x01,0x01,0x00,0x00}}, /* Audio sampling rate */ { 0x3D07, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x05,0x04,0x02,0x01,0x01,0x04,0x00,0x00,0x00}}, /* ChannelCount */ { 0x3D01, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x04,0x04,0x02,0x03,0x03,0x04,0x00,0x00,0x00}}, /* Quantization bits */ { 0x3D06, {0x06,0x0E,0x2B,0x34,0x01,0x01,0x01,0x02,0x04,0x01,0x06,0x01,0x00,0x00,0x00,0x00}}, /* Sound Essence Compression */ }; static void mxf_write_uuid(ByteIOContext *pb, enum CodecID type, int value) { put_buffer(pb, uuid_base, 12); put_be16(pb, type); put_be16(pb, value); } static void mxf_write_umid(ByteIOContext *pb, enum CodecID type, int value) { put_buffer(pb, umid_base, 16); mxf_write_uuid(pb, type, value); } static void mxf_write_refs_count(ByteIOContext *pb, int ref_count) { put_be32(pb, ref_count); put_be32(pb, 16); } static int klv_encode_ber_length(ByteIOContext *pb, uint64_t len) { // Determine the best BER size int size; if (len < 128) { //short form put_byte(pb, len); return 1; } size = (av_log2(len) >> 3) + 1; // long form put_byte(pb, 0x80 + size); while(size) { size --; put_byte(pb, len >> 8 * size & 0xff); } return 0; } /* * Get essence container ul and return its index position */ static const UID *mxf_get_essence_container_ul(enum CodecID type, int *index) { const MXFContainerEssencePair *uls = mxf_essence_container_uls; for (*index = 0; *index < sizeof(mxf_essence_container_uls)/ sizeof(*mxf_essence_container_uls); (*index)++) if (mxf_essence_container_uls[*index].id == type) return &uls->container_ul; *index = -1; return NULL; } static void mxf_write_primer_pack(AVFormatContext *s) { ByteIOContext *pb = s->pb; int local_tag_number, i = 0; local_tag_number = sizeof(mxf_local_tag_batch)/sizeof(*mxf_local_tag_batch); put_buffer(pb, primer_pack_key, 16); klv_encode_ber_length(pb, local_tag_number * 18 + 8); put_be32(pb, local_tag_number); // local_tag num put_be32(pb, 18); // item size, always 18 according to the specs for (i = 0; i < local_tag_number; i++) { put_be16(pb, mxf_local_tag_batch[i].local_tag); put_buffer(pb, mxf_local_tag_batch[i].uid, 16); } } static void mxf_write_local_tag(ByteIOContext *pb, int size, int tag) { put_be16(pb, tag); put_be16(pb, size); } static void mxf_write_metadata_key(ByteIOContext *pb, unsigned int value) { put_buffer(pb, header_metadata_key, 13); put_be24(pb, value); } static void mxf_free(AVFormatContext *s) { int i; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; av_freep(&st->priv_data); } } static const MXFDataDefinitionUL *mxf_get_data_definition_ul(enum CodecType type) { const MXFDataDefinitionUL *uls = ff_mxf_data_definition_uls; while (uls->type != CODEC_TYPE_DATA) { if (type == uls->type) break; uls++; } return uls; } static void mxf_write_essence_container_refs(AVFormatContext *s) { MXFContext *c = s->priv_data; ByteIOContext *pb = s->pb; int i; mxf_write_refs_count(pb, c->essence_container_count); av_log(s,AV_LOG_DEBUG, "essence container count:%d\n", c->essence_container_count); for (i = 0; i < c->essence_container_count; i++) { put_buffer(pb, mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul, 16); PRINT_KEY(s, "essence container ul:\n", mxf_essence_container_uls[c->essence_containers_indices[i]].container_ul); } } static void mxf_write_preface(AVFormatContext *s) { MXFContext *mxf = s->priv_data; ByteIOContext *pb = s->pb; mxf_write_metadata_key(pb, 0x012f00); PRINT_KEY(s, "preface key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 130 + 16 * mxf->essence_container_count); // write preface set uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, Preface, 0); PRINT_KEY(s, "preface uid", pb->buf_ptr - 16); // write create date as unknown mxf_write_local_tag(pb, 8, 0x3B02); put_be64(pb, 0); // write version mxf_write_local_tag(pb, 2, 0x3B05); put_be16(pb, 1); // write identification_refs mxf_write_local_tag(pb, 16 + 8, 0x3B06); mxf_write_refs_count(pb, 1); mxf_write_uuid(pb, Identification, 0); // write content_storage_refs mxf_write_local_tag(pb, 16, 0x3B03); mxf_write_uuid(pb, ContentStorage, 0); mxf_write_local_tag(pb, 16, 0x3B09); put_buffer(pb, op1a_ul, 16); // write essence_container_refs mxf_write_local_tag(pb, 8 + 16 * mxf->essence_container_count, 0x3B0A); mxf_write_essence_container_refs(s); // write dm_scheme_refs mxf_write_local_tag(pb, 8, 0x3B0B); put_be64(pb, 0); } /* * Write a local tag containing an ascii string as utf-16 */ static void mxf_write_local_tag_utf16(ByteIOContext *pb, int tag, const char *value) { int i, size = strlen(value); mxf_write_local_tag(pb, size*2, tag); for (i = 0; i < size; i++) put_be16(pb, value[i]); } static void mxf_write_identification(AVFormatContext *s) { ByteIOContext *pb = s->pb; const char *company = "FFmpeg"; const char *product = "OP1a Muxer"; const char *version; int length; mxf_write_metadata_key(pb, 0x013000); PRINT_KEY(s, "identification key", pb->buf_ptr - 16); version = s->streams[0]->codec->flags & CODEC_FLAG_BITEXACT ? "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION); length = 84 + (strlen(company)+strlen(product)+strlen(version))*2; // utf-16 klv_encode_ber_length(pb, length); // write uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, Identification, 0); PRINT_KEY(s, "identification uid", pb->buf_ptr - 16); // write generation uid mxf_write_local_tag(pb, 16, 0x3C09); mxf_write_uuid(pb, Identification, 1); mxf_write_local_tag_utf16(pb, 0x3C01, company); // Company Name mxf_write_local_tag_utf16(pb, 0x3C02, product); // Product Name mxf_write_local_tag_utf16(pb, 0x3C04, version); // Version String // write product uid mxf_write_local_tag(pb, 16, 0x3C05); mxf_write_uuid(pb, Identification, 2); // write modified date mxf_write_local_tag(pb, 8, 0x3C06); put_be64(pb, 0); } static void mxf_write_content_storage(AVFormatContext *s) { ByteIOContext *pb = s->pb; mxf_write_metadata_key(pb, 0x011800); PRINT_KEY(s, "content storage key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 64); // write uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, ContentStorage, 0); PRINT_KEY(s, "content storage uid", pb->buf_ptr - 16); // write package reference mxf_write_local_tag(pb, 16 * 2 + 8, 0x1901); mxf_write_refs_count(pb, 2); mxf_write_uuid(pb, MaterialPackage, 0); mxf_write_uuid(pb, SourcePackage, 0); } static void mxf_write_package(AVFormatContext *s, enum MXFMetadataSetType type) { ByteIOContext *pb = s->pb; int i; if (type == MaterialPackage) { mxf_write_metadata_key(pb, 0x013600); PRINT_KEY(s, "Material Package key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 92 + 16 * s->nb_streams); } else { mxf_write_metadata_key(pb, 0x013700); PRINT_KEY(s, "Source Package key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 112 + 16 * s->nb_streams); // 20 bytes length for descriptor reference } // write uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, type, 0); av_log(s,AV_LOG_DEBUG, "package type:%d\n", type); PRINT_KEY(s, "package uid", pb->buf_ptr - 16); // write package umid mxf_write_local_tag(pb, 32, 0x4401); mxf_write_umid(pb, type, 0); PRINT_KEY(s, "package umid second part", pb->buf_ptr - 16); // write create date mxf_write_local_tag(pb, 8, 0x4405); put_be64(pb, 0); // write modified date mxf_write_local_tag(pb, 8, 0x4404); put_be64(pb, 0); // write track refs mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x4403); mxf_write_refs_count(pb, s->nb_streams); for (i = 0; i < s->nb_streams; i++) mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, i); // write multiple descriptor reference if (type == SourcePackage) { mxf_write_local_tag(pb, 16, 0x4701); mxf_write_uuid(pb, MultipleDescriptor, 0); } } static void mxf_write_track(AVFormatContext *s, int stream_index, enum MXFMetadataSetType type, int *track_number_sign) { ByteIOContext *pb = s->pb; AVStream *st = s->streams[stream_index]; MXFStreamContext *sc = st->priv_data; mxf_write_metadata_key(pb, 0x013b00); PRINT_KEY(s, "track key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 80); // write track uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, type == MaterialPackage ? Track : Track + TypeBottom, stream_index); PRINT_KEY(s, "track uid", pb->buf_ptr - 16); // write track id mxf_write_local_tag(pb, 4, 0x4801); put_be32(pb, stream_index); // write track number mxf_write_local_tag(pb, 4, 0x4804); if (type == MaterialPackage) put_be32(pb, 0); // track number of material package is 0 else put_buffer(pb, sc->track_essence_element_key + 12, 4); mxf_write_local_tag(pb, 8, 0x4B01); put_be32(pb, st->time_base.den); put_be32(pb, st->time_base.num); // write origin mxf_write_local_tag(pb, 8, 0x4B02); put_be64(pb, 0); // write sequence refs mxf_write_local_tag(pb, 16, 0x4803); mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, stream_index); } static void mxf_write_common_fields(ByteIOContext *pb, AVStream *st) { const MXFDataDefinitionUL *data_def_ul = mxf_get_data_definition_ul(st->codec->codec_type); // find data define uls mxf_write_local_tag(pb, 16, 0x0201); put_buffer(pb, data_def_ul->uid, 16); // write duration mxf_write_local_tag(pb, 8, 0x0202); put_be64(pb, st->duration); } static void mxf_write_sequence(AVFormatContext *s, int stream_index, enum MXFMetadataSetType type) { ByteIOContext *pb = s->pb; AVStream *st = s->streams[stream_index]; mxf_write_metadata_key(pb, 0x010f00); PRINT_KEY(s, "sequence key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 80); mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, type == MaterialPackage ? Sequence: Sequence + TypeBottom, stream_index); PRINT_KEY(s, "sequence uid", pb->buf_ptr - 16); mxf_write_common_fields(pb, st); // write structural component mxf_write_local_tag(pb, 16 + 8, 0x1001); mxf_write_refs_count(pb, 1); mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, stream_index); } static void mxf_write_structural_component(AVFormatContext *s, int stream_index, enum MXFMetadataSetType type) { ByteIOContext *pb = s->pb; AVStream *st = s->streams[stream_index]; int i; mxf_write_metadata_key(pb, 0x011100); PRINT_KEY(s, "sturctural component key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 108); // write uid mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, type == MaterialPackage ? SourceClip: SourceClip + TypeBottom, stream_index); PRINT_KEY(s, "structural component uid", pb->buf_ptr - 16); mxf_write_common_fields(pb, st); // write start_position mxf_write_local_tag(pb, 8, 0x1201); put_be64(pb, 0); // write source package uid, end of the reference mxf_write_local_tag(pb, 32, 0x1101); if (type == SourcePackage) { for (i = 0; i < 4; i++) put_be64(pb, 0); } else mxf_write_umid(pb, SourcePackage, 0); // write source track id mxf_write_local_tag(pb, 4, 0x1102); if (type == SourcePackage) put_be32(pb, 0); else put_be32(pb, stream_index); } static void mxf_write_multi_descriptor(AVFormatContext *s) { ByteIOContext *pb = s->pb; int i; mxf_write_metadata_key(pb, 0x014400); PRINT_KEY(s, "multiple descriptor key", pb->buf_ptr - 16); klv_encode_ber_length(pb, 64 + 16 * s->nb_streams); mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, MultipleDescriptor, 0); PRINT_KEY(s, "multi_desc uid", pb->buf_ptr - 16); // write sample rate mxf_write_local_tag(pb, 8, 0x3001); put_be32(pb, s->streams[0]->time_base.den); put_be32(pb, s->streams[0]->time_base.num); // write essence container ul mxf_write_local_tag(pb, 16, 0x3004); put_buffer(pb, multiple_desc_ul, 16); // write sub descriptor refs mxf_write_local_tag(pb, s->nb_streams * 16 + 8, 0x3F01); mxf_write_refs_count(pb, s->nb_streams); for (i = 0; i < s->nb_streams; i++) mxf_write_uuid(pb, SubDescriptor, i); } static void mxf_write_generic_desc(ByteIOContext *pb, const MXFDescriptorWriteTableEntry *desc_tbl, AVStream *st) { MXFStreamContext *sc = st->priv_data; put_buffer(pb, desc_tbl->key, 16); klv_encode_ber_length(pb, 108); mxf_write_local_tag(pb, 16, 0x3C0A); mxf_write_uuid(pb, SubDescriptor, st->index); mxf_write_local_tag(pb, 4, 0x3006); put_be32(pb, st->index); mxf_write_local_tag(pb, 8, 0x3001); put_be32(pb, st->time_base.den); put_be32(pb, st->time_base.num); mxf_write_local_tag(pb, 16, 0x3004); put_buffer(pb, *sc->essence_container_ul, 16); } static void mxf_write_mpegvideo_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index) { ByteIOContext *pb = s->pb; AVStream *st = s->streams[stream_index]; mxf_write_generic_desc(pb, desc_tbl, st); mxf_write_local_tag(pb, 4, 0x3203); put_be32(pb, st->codec->width); mxf_write_local_tag(pb, 4, 0x3202); put_be32(pb, st->codec->height); mxf_write_local_tag(pb, 8, 0x320E); put_be32(pb, st->codec->height * st->sample_aspect_ratio.den); put_be32(pb, st->codec->width * st->sample_aspect_ratio.num); // tmp write, will modified later mxf_write_local_tag(pb, 16, 0x3201); put_buffer(pb, ff_mxf_codec_uls->uid, 16); } static void mxf_write_wav_desc(AVFormatContext *s, const MXFDescriptorWriteTableEntry *desc_tbl, int stream_index) { ByteIOContext *pb = s->pb; AVStream *st; st = s->streams[stream_index]; mxf_write_generic_desc(pb, desc_tbl, st); // write audio sampling rate mxf_write_local_tag(pb, 8, 0x3D03); put_be32(pb, st->codec->sample_rate); put_be32(pb, 1); mxf_write_local_tag(pb, 4, 0x3D07); put_be32(pb, st->codec->channels); mxf_write_local_tag(pb, 4, 0x3D01); put_be32(pb, st->codec->bits_per_sample); // tmp write, will modified later mxf_write_local_tag(pb, 16, 0x3201); put_buffer(pb, (ff_mxf_codec_uls + 8)->uid, 16); } static const MXFDescriptorWriteTableEntry mxf_descriptor_write_table[] = { { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_write_mpegvideo_desc, CODEC_ID_MPEG2VIDEO}, { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_write_wav_desc, CODEC_ID_PCM_S16LE}, { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL, CODEC_ID_NONE}, }; static void mxf_build_structural_metadata(AVFormatContext *s, enum MXFMetadataSetType type) { int i; const MXFDescriptorWriteTableEntry *desc = NULL; int track_number_sign[sizeof(mxf_essence_element_key)/ sizeof(*mxf_essence_element_key)] = {0}; mxf_write_package(s, type); if (type == SourcePackage) mxf_write_multi_descriptor(s); for (i = 0;i < s->nb_streams; i++) { mxf_write_track(s, i, type, track_number_sign); mxf_write_sequence(s, i, type); mxf_write_structural_component(s, i, type); if (type == SourcePackage) { for (desc = mxf_descriptor_write_table; desc->write; desc++) { if (s->streams[i]->codec->codec_id == desc->type) { desc->write(s, desc, i); break; } } } } } static int mxf_write_header_metadata_sets(AVFormatContext *s) { mxf_write_preface(s); mxf_write_identification(s); mxf_write_content_storage(s); mxf_build_structural_metadata(s, MaterialPackage); mxf_build_structural_metadata(s, SourcePackage); return 0; } static void mxf_write_partition(AVFormatContext *s, int64_t byte_position, int bodysid, const uint8_t *key) { MXFContext *mxf = s->priv_data; ByteIOContext *pb = s->pb; // write klv put_buffer(pb, key, 16); klv_encode_ber_length(pb, 88 + 16 * mxf->essence_container_count); // write partition value put_be16(pb, 1); // majorVersion put_be16(pb, 2); // minorVersion put_be32(pb, 1); // kagSize put_be64(pb, byte_position); // thisPartition put_be64(pb, 0); // previousPartition // set offset if (!byte_position) mxf->header_footer_partition_offset = url_ftell(pb); put_be64(pb, byte_position); // footerPartition,update later // set offset if (!byte_position) mxf->header_byte_count_offset = url_ftell(pb); put_be64(pb, 0); // headerByteCount, update later // no indexTable put_be64(pb, 0); // indexByteCount put_be32(pb, 0); // indexSID put_be64(pb, 0); // bodyOffset put_be32(pb, bodysid); // bodySID put_buffer(pb, op1a_ul, 16); // operational pattern // essence container mxf_write_essence_container_refs(s); } static int mux_write_header(AVFormatContext *s) { MXFContext *mxf = s->priv_data; ByteIOContext *pb = s->pb; int64_t header_metadata_start, offset_now; int i, index; uint8_t present[sizeof(mxf_essence_container_uls)/ sizeof(*mxf_essence_container_uls)] = {0}; for (i = 0; i < s->nb_streams; i++) { AVStream *st = s->streams[i]; MXFStreamContext *sc = av_mallocz(sizeof(*sc)); if (!sc) return AVERROR(ENOMEM); st->priv_data = sc; // set pts information if (st->codec->codec_type == CODEC_TYPE_VIDEO) av_set_pts_info(st, 64, 1, st->codec->time_base.den); else if (st->codec->codec_type == CODEC_TYPE_AUDIO) av_set_pts_info(st, 64, 1, st->codec->sample_rate); sc->essence_container_ul = mxf_get_essence_container_ul(st->codec->codec_id, &index); if (!sc->essence_container_ul) { av_log(s, AV_LOG_ERROR, "track %d: could not find essence container ul, " "codec not currently supported in container\n", i); return -1; } if (!present[index]) { mxf->essence_containers_indices[mxf->essence_container_count++] = index; present[index] = 1; } else present[index]++; memcpy(sc->track_essence_element_key, mxf_essence_element_key[index].uid, 15); sc->track_essence_element_key[15] = present[index]; PRINT_KEY(s, "track essence element key", sc->track_essence_element_key); } mxf_write_partition(s, 0, 1, header_partition_key); // mark the start of the headermetadata and calculate metadata size header_metadata_start = url_ftell(s->pb); mxf_write_primer_pack(s); if (mxf_write_header_metadata_sets(s) < 0) goto fail; offset_now = url_ftell(s->pb); mxf->header_byte_count = offset_now - header_metadata_start; // update header_byte_count url_fseek(pb, mxf->header_byte_count_offset, SEEK_SET); put_be64(pb, mxf->header_byte_count); url_fseek(pb, offset_now, SEEK_SET); put_flush_packet(pb); return 0; fail: mxf_free(s); return -1; } static int mux_write_packet(AVFormatContext *s, AVPacket *pkt) { ByteIOContext *pb = s->pb; AVStream *st = s->streams[pkt->stream_index]; MXFStreamContext *sc = st->priv_data; put_buffer(pb, sc->track_essence_element_key, 16); // write key klv_encode_ber_length(pb, pkt->size); // write length put_buffer(pb, pkt->data, pkt->size); // write value put_flush_packet(pb); return 0; } static void mxf_update_header_partition(AVFormatContext *s, int64_t footer_partition_offset) { MXFContext *mxf = s->priv_data; ByteIOContext *pb = s->pb; url_fseek(pb, mxf->header_footer_partition_offset, SEEK_SET); put_be64(pb, footer_partition_offset); put_flush_packet(pb); } static int mux_write_footer(AVFormatContext *s) { ByteIOContext *pb = s->pb; int64_t byte_position= url_ftell(pb); if (!url_is_streamed(s->pb)) { mxf_write_partition(s, byte_position, 0, footer_partition_key); put_flush_packet(pb); mxf_update_header_partition(s, byte_position); } mxf_free(s); return 0; } AVOutputFormat mxf_muxer = { "mxf", NULL_IF_CONFIG_SMALL("Material eXchange Format"), NULL, "mxf", sizeof(MXFContext), CODEC_ID_PCM_S16LE, CODEC_ID_MPEG2VIDEO, mux_write_header, mux_write_packet, mux_write_footer, };