/* * MXF demuxer. * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier . * * This library 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 of the License, or (at your option) any later version. * * This library 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 this library; 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 378M Operational Pattern 1a * SMPTE 379M MXF Generic Container * SMPTE 381M Mapping MPEG Streams into the MXF Generic Container * SMPTE 382M Mapping AES3 and Broadcast Wave Audio into the MXF Generic Container * SMPTE 383M Mapping DV-DIF Data to the MXF Generic Container * * Principle * Search for Track numbers which will identify essence element KLV packets. * Search for SourcePackage which define tracks which contains Track numbers. * Material Package contains tracks with reference to SourcePackage tracks. * Search for Descriptors (Picture, Sound) which contains codec info and parameters. * Assign Descriptors to correct Tracks. * * Metadata reading functions read Local Tags, get InstanceUID(0x3C0A) and then resolve Strong Reference from another object. * Returns -1 if Strong Reference could not be resolved. * * Simple demuxer, only OP1A supported and some files might not work at all. * Only tracks with associated descriptors will be decoded. "Highly Desirable" SMPTE 377M D.1 * Only descriptors with EssenceSoundCompression or PictureEssenceCoding will be taken into account. "D/req" SMPTE 377M */ //#define DEBUG #include "avformat.h" typedef uint8_t UID[16]; enum MXFPackageType { MaterialPackage, SourcePackage, }; enum MXFStructuralComponentType { Timecode, SourceClip, }; typedef struct MXFStructuralComponent { UID uid; UID source_package_uid; UID data_definition_ul; int64_t duration; int64_t start_position; int source_track_id; enum MXFStructuralComponentType type; } MXFStructuralComponent; typedef struct MXFSequence { UID uid; UID data_definition_ul; MXFStructuralComponent **structural_components; UID *structural_components_refs; int structural_components_count; int64_t duration; } MXFSequence; typedef struct MXFTrack { UID uid; MXFSequence *sequence; /* mandatory, and only one */ UID sequence_ref; int track_id; uint8_t track_number[4]; AVRational edit_rate; } MXFTrack; typedef struct MXFDescriptor { UID uid; UID essence_container_ul; UID essence_codec_ul; AVRational sample_rate; AVRational aspect_ratio; int width; int height; int channels; int bits_per_sample; struct MXFDescriptor **sub_descriptors; UID *sub_descriptors_refs; int sub_descriptors_count; int linked_track_id; } MXFDescriptor; typedef struct MXFPackage { UID uid; UID package_uid; MXFTrack **tracks; UID *tracks_refs; int tracks_count; MXFDescriptor *descriptor; /* only one */ UID descriptor_ref; enum MXFPackageType type; } MXFPackage; typedef struct MXFEssenceContainerData { UID uid; UID linked_package_uid; } MXFEssenceContainerData; typedef struct MXFContext { MXFPackage **packages; UID *packages_refs; int packages_count; MXFEssenceContainerData **essence_container_data_sets; UID *essence_container_data_sets_refs; int essence_container_data_sets_count; UID *essence_containers_uls; /* Universal Labels SMPTE RP224 */ int essence_containers_uls_count; UID operational_pattern_ul; UID content_storage_uid; AVFormatContext *fc; } MXFContext; typedef struct KLVPacket { UID key; offset_t offset; uint64_t length; } KLVPacket; typedef struct MXFCodecUL { UID uid; enum CodecID id; } MXFCodecUL; typedef struct MXFMetadataReadTableEntry { const UID key; int (*read)(MXFContext *mxf, KLVPacket *klv); } MXFMetadataReadTableEntry; /* partial keys to match */ static const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 }; static const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 }; #define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y))) #define PRINT_KEY(x) dprintf("%02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X %02X\n", \ (x)[0], (x)[1], (x)[2], (x)[3], (x)[4], (x)[5], (x)[6], (x)[7], (x)[8], (x)[9], (x)[10], (x)[11], (x)[12], (x)[13], (x)[14], (x)[15]) static int64_t klv_decode_ber_length(ByteIOContext *pb) { int64_t size = 0; uint8_t length = get_byte(pb); int type = length >> 7; if (type) { /* long form */ int bytes_num = length & 0x7f; /* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */ if (bytes_num > 8) return -1; while (bytes_num--) size = size << 8 | get_byte(pb); } else { size = length & 0x7f; } return size; } static int klv_read_packet(KLVPacket *klv, ByteIOContext *pb) { klv->offset = url_ftell(pb); get_buffer(pb, klv->key, 16); klv->length = klv_decode_ber_length(pb); return klv->length == -1 ? -1 : 0; } static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv) { int i; for (i = 0; i < s->nb_streams; i++) { MXFTrack *track = s->streams[i]->priv_data; /* SMPTE 379M 7.3 */ if (!memcmp(klv->key + sizeof(mxf_essence_element_key), track->track_number, sizeof(track->track_number))) return i; } return -1; } static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt) { KLVPacket klv; while (!url_feof(&s->pb)) { if (klv_read_packet(&klv, &s->pb) < 0) { av_log(s, AV_LOG_ERROR, "error reading KLV packet\n"); return -1; } #ifdef DEBUG PRINT_KEY(klv.key); #endif if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) { av_get_packet(&s->pb, pkt, klv.length); pkt->stream_index = mxf_get_stream_index(s, &klv); return pkt->stream_index == -1 ? -1 : 0; } else url_fskip(&s->pb, klv.length); } return AVERROR_IO; } static int mxf_read_metadata_preface(MXFContext *mxf, KLVPacket *klv) { ByteIOContext *pb = &mxf->fc->pb; int bytes_read = 0; while (bytes_read < klv->length) { int tag = get_be16(pb); int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */ switch (tag) { case 0x3B03: get_buffer(pb, mxf->content_storage_uid, 16); break; case 0x3B09: get_buffer(pb, mxf->operational_pattern_ul, 16); break; case 0x3B0A: mxf->essence_containers_uls_count = get_be32(pb); if (mxf->essence_containers_uls_count >= UINT_MAX / sizeof(UID)) return -1; mxf->essence_containers_uls = av_malloc(mxf->essence_containers_uls_count * sizeof(UID)); url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ get_buffer(pb, mxf->essence_containers_uls, mxf->essence_containers_uls_count * sizeof(UID)); break; default: url_fskip(pb, size); } bytes_read += size + 4; } return 0; } static int mxf_read_metadata_content_storage(MXFContext *mxf, KLVPacket *klv) { ByteIOContext *pb = &mxf->fc->pb; int bytes_read = 0; while (bytes_read < klv->length) { int tag = get_be16(pb); int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */ dprintf("tag 0x%04X, size %d\n", tag, size); switch (tag) { case 0x1901: mxf->packages_count = get_be32(pb); if (mxf->packages_count >= UINT_MAX / sizeof(UID) || mxf->packages_count >= UINT_MAX / sizeof(*mxf->packages)) return -1; mxf->packages_refs = av_malloc(mxf->packages_count * sizeof(UID)); mxf->packages = av_mallocz(mxf->packages_count * sizeof(*mxf->packages)); url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ get_buffer(pb, mxf->packages_refs, mxf->packages_count * sizeof(UID)); break; case 0x1902: mxf->essence_container_data_sets_count = get_be32(pb); if (mxf->essence_container_data_sets_count >= UINT_MAX / sizeof(UID) || mxf->essence_container_data_sets_count >= UINT_MAX / sizeof(*mxf->essence_container_data_sets)) return -1; mxf->essence_container_data_sets_refs = av_malloc(mxf->essence_container_data_sets_count * sizeof(UID)); mxf->essence_container_data_sets = av_mallocz(mxf->essence_container_data_sets_count * sizeof(*mxf->essence_container_data_sets)); url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ get_buffer(pb, mxf->essence_container_data_sets_refs, mxf->essence_container_data_sets_count * sizeof(UID)); break; default: url_fskip(pb, size); } bytes_read += size + 4; } return 0; } static int mxf_read_metadata_source_clip(MXFContext *mxf, KLVPacket *klv) { ByteIOContext *pb = &mxf->fc->pb; MXFStructuralComponent *source_clip = av_mallocz(sizeof(*source_clip)); int bytes_read = 0; int i, j, k; source_clip->type = SourceClip; while (bytes_read < klv->length) { int tag = get_be16(pb); int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */ dprintf("tag 0x%04X, size %d\n", tag, size); switch (tag) { case 0x3C0A: get_buffer(pb, source_clip->uid, 16); break; case 0x0202: source_clip->duration = get_be64(pb); break; case 0x1201: source_clip->start_position = get_be64(pb); break; case 0x1101: /* UMID, only get last 16 bytes */ url_fskip(pb, 16); get_buffer(pb, source_clip->source_package_uid, 16); break; case 0x1102: source_clip->source_track_id = get_be32(pb); break; default: url_fskip(pb, size); } bytes_read += size + 4; } for (i = 0; i < mxf->packages_count; i++) { if (mxf->packages[i]) { for (j = 0; j < mxf->packages[i]->tracks_count; j++) { if (mxf->packages[i]->tracks[j] && mxf->packages[i]->tracks[j]->sequence) { for (k = 0; k < mxf->packages[i]->tracks[j]->sequence->structural_components_count; k++) { if (!memcmp(mxf->packages[i]->tracks[j]->sequence->structural_components_refs[k], source_clip->uid, 16)) { mxf->packages[i]->tracks[j]->sequence->structural_components[k] = source_clip; return 0; } } } } } } return -1; } static int mxf_read_metadata_material_package(MXFContext *mxf, KLVPacket *klv) { ByteIOContext *pb = &mxf->fc->pb; MXFPackage *package = av_mallocz(sizeof(*package)); int bytes_read = 0; int i; package->type = MaterialPackage; while (bytes_read < klv->length) { int tag = get_be16(pb); int size = get_be16(pb); /* KLV specified by 0x53 */ switch (tag) { case 0x3C0A: get_buffer(pb, package->uid, 16); break; case 0x4403: package->tracks_count = get_be32(pb); if (package->tracks_count >= UINT_MAX / sizeof(UID) || package->tracks_count >= UINT_MAX / sizeof(*package->tracks)) return -1; package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID)); package->tracks = av_mallocz(package->tracks_count * sizeof(*package->tracks)); url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ get_buffer(pb, package->tracks_refs, package->tracks_count * sizeof(UID)); break; default: url_fskip(pb, size); } bytes_read += size + 4; } for (i = 0; i < mxf->packages_count; i++) { if (!memcmp(mxf->packages_refs[i], package->uid, 16)) { mxf->packages[i] = package; return 0; } } return -1; } static int mxf_read_metadata_track(MXFContext *mxf, KLVPacket *klv) { ByteIOContext *pb = &mxf->fc->pb; MXFTrack *track = av_mallocz(sizeof(*track)); int bytes_read = 0; int i, j; while (bytes_read < klv->length) { int tag = get_be16(pb); int size = get_be16(pb); /* KLV specified by 0x53 */ dprintf("tag 0x%04X, size %d\n", tag, size); switch (tag) { case 0x3C0A: get_buffer(pb, track->uid, 16); break; case 0x4801: track->track_id = get_be32(pb); break; case 0x4804: get_buffer(pb, track->track_number, 4); break; case 0x4B01: track->edit_rate.den = get_be32(pb); track->edit_rate.num = get_be32(pb); break; case 0x4803: get_buffer(pb, track->sequence_ref, 16); break; default: url_fskip(pb, size); } bytes_read += size + 4; } for (i = 0; i < mxf->packages_count; i++) { if (mxf->packages[i]) { for (j = 0; j < mxf->packages[i]->tracks_count; j++) { if (!memcmp(mxf->packages[i]->tracks_refs[j], track->uid, 16)) { mxf->packages[i]->tracks[j] = track; return 0; } } } } return -1; } static int mxf_read_metadata_sequence(MXFContext *mxf, KLVPacket *klv) { ByteIOContext *pb = &mxf->fc->pb; MXFSequence *sequence = av_mallocz(sizeof(*sequence)); int bytes_read = 0; int i, j; while (bytes_read < klv->length) { int tag = get_be16(pb); int size = get_be16(pb); /* KLV specified by 0x53 */ dprintf("tag 0x%04X, size %d\n", tag, size); switch (tag) { case 0x3C0A: get_buffer(pb, sequence->uid, 16); break; case 0x0202: sequence->duration = get_be64(pb); break; case 0x0201: get_buffer(pb, sequence->data_definition_ul, 16); break; case 0x1001: sequence->structural_components_count = get_be32(pb); if (sequence->structural_components_count >= UINT_MAX / sizeof(UID) || sequence->structural_components_count >= UINT_MAX / sizeof(*sequence->structural_components)) return -1; sequence->structural_components_refs = av_malloc(sequence->structural_components_count * sizeof(UID)); sequence->structural_components = av_mallocz(sequence->structural_components_count * sizeof(*sequence->structural_components)); url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ get_buffer(pb, sequence->structural_components_refs, sequence->structural_components_count * sizeof(UID)); break; default: url_fskip(pb, size); } bytes_read += size + 4; } for (i = 0; i < mxf->packages_count; i++) { if (mxf->packages[i]) { for (j = 0; j < mxf->packages[i]->tracks_count; j++) { if (mxf->packages[i]->tracks[j]) { if (!memcmp(mxf->packages[i]->tracks[j]->sequence_ref, sequence->uid, 16)) { mxf->packages[i]->tracks[j]->sequence = sequence; return 0; } } } } } return -1; } static int mxf_read_metadata_source_package(MXFContext *mxf, KLVPacket *klv) { ByteIOContext *pb = &mxf->fc->pb; MXFPackage *package = av_mallocz(sizeof(*package)); int bytes_read = 0; int i; package->type = SourcePackage; while (bytes_read < klv->length) { int tag = get_be16(pb); int size = get_be16(pb); /* KLV specified by 0x53 */ dprintf("tag 0x%04X, size %d\n", tag, size); switch (tag) { case 0x3C0A: get_buffer(pb, package->uid, 16); break; case 0x4403: package->tracks_count = get_be32(pb); if (package->tracks_count >= UINT_MAX / sizeof(UID) || package->tracks_count >= UINT_MAX / sizeof(*package->tracks)) return -1; package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID)); package->tracks = av_mallocz(package->tracks_count * sizeof(*package->tracks)); url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ get_buffer(pb, package->tracks_refs, package->tracks_count * sizeof(UID)); break; case 0x4401: /* UMID, only get last 16 bytes */ url_fskip(pb, 16); get_buffer(pb, package->package_uid, 16); break; case 0x4701: get_buffer(pb, package->descriptor_ref, 16); break; default: url_fskip(pb, size); } bytes_read += size + 4; } for (i = 0; i < mxf->packages_count; i++) { if (!memcmp(mxf->packages_refs[i], package->uid, 16)) { mxf->packages[i] = package; return 0; } } return -1; } static int mxf_read_metadata_multiple_descriptor(MXFContext *mxf, KLVPacket *klv) { ByteIOContext *pb = &mxf->fc->pb; MXFDescriptor *descriptor = av_mallocz(sizeof(*descriptor)); int bytes_read = 0; int i; while (bytes_read < klv->length) { int tag = get_be16(pb); int size = get_be16(pb); /* KLV specified by 0x53 */ dprintf("tag 0x%04X, size %d\n", tag, size); switch (tag) { case 0x3C0A: get_buffer(pb, descriptor->uid, 16); break; case 0x3F01: descriptor->sub_descriptors_count = get_be32(pb); if (descriptor->sub_descriptors_count >= UINT_MAX / sizeof(UID) || descriptor->sub_descriptors_count >= UINT_MAX / sizeof(*descriptor->sub_descriptors)) return -1; descriptor->sub_descriptors_refs = av_malloc(descriptor->sub_descriptors_count * sizeof(UID)); descriptor->sub_descriptors = av_mallocz(descriptor->sub_descriptors_count * sizeof(*descriptor->sub_descriptors)); url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ get_buffer(pb, descriptor->sub_descriptors_refs, descriptor->sub_descriptors_count * sizeof(UID)); break; default: url_fskip(pb, size); } bytes_read += size + 4; } for (i = 0; i < mxf->packages_count; i++) { if (mxf->packages[i]) { if (!memcmp(mxf->packages[i]->descriptor_ref, descriptor->uid, 16)) { mxf->packages[i]->descriptor = descriptor; return 0; } } } return -1; } static void mxf_read_metadata_pixel_layout(ByteIOContext *pb, MXFDescriptor *descriptor) { int code; do { code = get_byte(pb); dprintf("pixel layout: code 0x%x\n", code); switch (code) { case 0x52: /* R */ descriptor->bits_per_sample += get_byte(pb); break; case 0x47: /* G */ descriptor->bits_per_sample += get_byte(pb); break; case 0x42: /* B */ descriptor->bits_per_sample += get_byte(pb); break; default: get_byte(pb); } } while (code != 0); /* SMPTE 377M E.2.46 */ } static int mxf_read_metadata_generic_descriptor(MXFContext *mxf, KLVPacket *klv) { ByteIOContext *pb = &mxf->fc->pb; MXFDescriptor *descriptor = av_mallocz(sizeof(*descriptor)); int bytes_read = 0; int i, j; while (bytes_read < klv->length) { int tag = get_be16(pb); int size = get_be16(pb); /* KLV specified by 0x53 */ dprintf("tag 0x%04X, size %d\n", tag, size); switch (tag) { case 0x3C0A: get_buffer(pb, descriptor->uid, 16); break; case 0x3004: get_buffer(pb, descriptor->essence_container_ul, 16); break; case 0x3006: descriptor->linked_track_id = get_be32(pb); break; case 0x3201: /* PictureEssenceCoding */ get_buffer(pb, descriptor->essence_codec_ul, 16); break; case 0x3203: descriptor->width = get_be32(pb); break; case 0x3202: descriptor->height = get_be32(pb); break; case 0x320E: descriptor->aspect_ratio.num = get_be32(pb); descriptor->aspect_ratio.den = get_be32(pb); break; case 0x3D03: descriptor->sample_rate.num = get_be32(pb); descriptor->sample_rate.den = get_be32(pb); break; case 0x3D06: /* SoundEssenceCompression */ get_buffer(pb, descriptor->essence_codec_ul, 16); break; case 0x3D07: descriptor->channels = get_be32(pb); break; case 0x3D01: descriptor->bits_per_sample = get_be32(pb); break; case 0x3401: mxf_read_metadata_pixel_layout(pb, descriptor); break; default: url_fskip(pb, size); } bytes_read += size + 4; } for (i = 0; i < mxf->packages_count; i++) { if (mxf->packages[i]) { if (!memcmp(mxf->packages[i]->descriptor_ref, descriptor->uid, 16)) { mxf->packages[i]->descriptor = descriptor; return 0; } else if (mxf->packages[i]->descriptor) { /* MultipleDescriptor */ for (j = 0; j < mxf->packages[i]->descriptor->sub_descriptors_count; j++) { if (!memcmp(mxf->packages[i]->descriptor->sub_descriptors_refs[j], descriptor->uid, 16)) { mxf->packages[i]->descriptor->sub_descriptors[j] = descriptor; return 0; } } } } } return -1; } /* SMPTE RP224 http://www.smpte-ra.org/mdd/index.html */ static const UID picture_essence_track_ul = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x02,0x01,0x00,0x00,0x00 }; static const UID sound_essence_track_ul = { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x01,0x03,0x02,0x02,0x02,0x00,0x00,0x00 }; static const MXFCodecUL mxf_codec_uls[] = { /* PictureEssenceCoding */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x02,0x00 }, CODEC_ID_MPEG2VIDEO }, /* 422P@ML I-Frame */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, CODEC_ID_MPEG2VIDEO }, /* 422P@HL Long GoP */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x01,0x11,0x00 }, CODEC_ID_MPEG2VIDEO }, /* MP@ML Long GoP */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, CODEC_ID_MPEG2VIDEO }, /* 422P@ML Long GoP */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x03,0x03,0x00 }, CODEC_ID_MPEG2VIDEO }, /* MP@HL Long GoP */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x05 }, CODEC_ID_MPEG2VIDEO }, /* D-10 30Mbps PAL */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x01,0x02,0x01,0x01 }, CODEC_ID_MPEG2VIDEO }, /* D-10 50Mbps PAL */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x04,0x00 }, CODEC_ID_DVVIDEO }, /* DVCPRO50 PAL */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x02,0x02,0x00 }, CODEC_ID_DVVIDEO }, /* DVCPRO25 PAL */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x02,0x01,0x02,0x00 }, CODEC_ID_DVVIDEO }, /* DV25 IEC PAL */ //{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, CODEC_ID_JPEG2K }, /* JPEG2000 Codestream */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x01,0x02,0x01,0x7F,0x00,0x00,0x00 }, CODEC_ID_RAWVIDEO }, /* Uncompressed */ /* SoundEssenceCompression */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x01,0x7F,0x00,0x00,0x00 }, CODEC_ID_PCM_S16LE }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x07,0x04,0x02,0x02,0x01,0x7E,0x00,0x00,0x00 }, CODEC_ID_PCM_S16BE }, /* From Omneon MXF file */ { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x01,0x01,0x00 }, CODEC_ID_PCM_ALAW }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x01,0x00 }, CODEC_ID_AC3 }, { { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x05,0x00 }, CODEC_ID_MP2 }, /* MP2 or MP3 */ //{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x01,0x04,0x02,0x02,0x02,0x03,0x02,0x1C,0x00 }, CODEC_ID_DOLBY_E }, /* Dolby-E */ }; static enum CodecID mxf_get_codec_id(const MXFCodecUL *uls, UID *uid) { while (uls->id != CODEC_ID_NONE) { if(!memcmp(uls->uid, *uid, 16)) return uls->id; uls++; } return CODEC_ID_NONE; } static int mxf_parse_structural_metadata(MXFContext *mxf) { MXFPackage *material_package = NULL; MXFPackage *source_package = NULL; int i, j, k; /* TODO: handle multiple material packages (OP3x) */ for (i = 0; i < mxf->packages_count; i++) { if (mxf->packages[i]->type == MaterialPackage) { material_package = mxf->packages[i]; break; } } if (!material_package) { av_log(mxf->fc, AV_LOG_ERROR, "no material package found\n"); return -1; } for (i = 0; i < material_package->tracks_count; i++) { MXFTrack *material_track = material_package->tracks[i]; MXFTrack *source_track = NULL; MXFDescriptor *descriptor = NULL; MXFStructuralComponent *component = NULL; AVStream *st; /* TODO: handle multiple source clips */ for (j = 0; j < material_track->sequence->structural_components_count; j++) { component = material_track->sequence->structural_components[j]; /* TODO: handle timecode component */ if (!component || component->type != SourceClip) continue; for (k = 0; k < mxf->packages_count; k++) { if (!memcmp(mxf->packages[k]->package_uid, component->source_package_uid, 16)) { source_package = mxf->packages[k]; break; } } if (!source_package) { av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source package found\n", material_track->track_id); break; } for (k = 0; k < source_package->tracks_count; k++) { if (source_package->tracks[k]->track_id == component->source_track_id) { source_track = source_package->tracks[k]; break; } } if (!source_track) { av_log(mxf->fc, AV_LOG_ERROR, "material track %d: no corresponding source track found\n", material_track->track_id); break; } } if (!source_track) continue; st = av_new_stream(mxf->fc, source_track->track_id); st->priv_data = source_track; st->duration = component->duration; if (st->duration == -1) st->duration = AV_NOPTS_VALUE; st->start_time = component->start_position; av_set_pts_info(st, 64, material_track->edit_rate.num, material_track->edit_rate.den); #ifdef DEBUG PRINT_KEY(source_track->sequence->data_definition_ul); #endif if (!memcmp(source_track->sequence->data_definition_ul, picture_essence_track_ul, 16)) st->codec->codec_type = CODEC_TYPE_VIDEO; else if (!memcmp(source_track->sequence->data_definition_ul, sound_essence_track_ul, 16)) st->codec->codec_type = CODEC_TYPE_AUDIO; else st->codec->codec_type = CODEC_TYPE_DATA; if (source_package->descriptor) { if (source_package->descriptor->sub_descriptors_count > 0) { /* SourcePackage has MultipleDescriptor */ for (j = 0; j < source_package->descriptor->sub_descriptors_count; j++) { if (source_package->descriptor->sub_descriptors[j]) { if (source_package->descriptor->sub_descriptors[j]->linked_track_id == source_track->track_id) { descriptor = source_package->descriptor->sub_descriptors[j]; break; } } } } else { descriptor = source_package->descriptor; } } if (!descriptor) { av_log(mxf->fc, AV_LOG_INFO, "source track %d: stream %d, no descriptor found\n", source_track->track_id, st->index); continue; } #ifdef DEBUG PRINT_KEY(descriptor->essence_codec_ul); #endif st->codec->codec_id = mxf_get_codec_id(mxf_codec_uls, &descriptor->essence_codec_ul); if (st->codec->codec_type == CODEC_TYPE_VIDEO) { st->codec->width = descriptor->width; st->codec->height = descriptor->height; st->codec->bits_per_sample = descriptor->bits_per_sample; /* Uncompressed */ } else if (st->codec->codec_type == CODEC_TYPE_AUDIO) { st->codec->channels = descriptor->channels; st->codec->bits_per_sample = descriptor->bits_per_sample; st->codec->sample_rate = descriptor->sample_rate.num / descriptor->sample_rate.den; /* TODO: implement CODEC_ID_RAWAUDIO */ if (st->codec->codec_id == CODEC_ID_PCM_S16LE) { if (descriptor->bits_per_sample == 24) st->codec->codec_id = CODEC_ID_PCM_S24LE; else if (descriptor->bits_per_sample == 32) st->codec->codec_id = CODEC_ID_PCM_S32LE; } else if (st->codec->codec_id == CODEC_ID_PCM_S16BE) { if (descriptor->bits_per_sample == 24) st->codec->codec_id = CODEC_ID_PCM_S24BE; else if (descriptor->bits_per_sample == 32) st->codec->codec_id = CODEC_ID_PCM_S32BE; } } } return 0; } static const MXFMetadataReadTableEntry mxf_metadata_read_table[] = { { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x2F,0x00 }, mxf_read_metadata_preface }, { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x18,0x00 }, mxf_read_metadata_content_storage }, { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x37,0x00 }, mxf_read_metadata_source_package }, { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x36,0x00 }, mxf_read_metadata_material_package }, { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x0F,0x00 }, mxf_read_metadata_sequence }, { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x11,0x00 }, mxf_read_metadata_source_clip }, { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x44,0x00 }, mxf_read_metadata_multiple_descriptor }, { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x42,0x00 }, mxf_read_metadata_generic_descriptor }, /* Generic Sound */ { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x28,0x00 }, mxf_read_metadata_generic_descriptor }, /* CDCI */ { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x29,0x00 }, mxf_read_metadata_generic_descriptor }, /* RGBA */ { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x51,0x00 }, mxf_read_metadata_generic_descriptor }, /* MPEG 2 Video */ { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x48,0x00 }, mxf_read_metadata_generic_descriptor }, /* Wave */ { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x47,0x00 }, mxf_read_metadata_generic_descriptor }, /* AES3 */ { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3A,0x00 }, mxf_read_metadata_track }, /* Static Track */ { { 0x06,0x0E,0x2B,0x34,0x02,0x53,0x01,0x01,0x0d,0x01,0x01,0x01,0x01,0x01,0x3B,0x00 }, mxf_read_metadata_track }, /* Generic Track */ { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, NULL }, }; static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap) { MXFContext *mxf = s->priv_data; KLVPacket klv; mxf->fc = s; while (!url_feof(&s->pb)) { const MXFMetadataReadTableEntry *function; if (klv_read_packet(&klv, &s->pb) < 0) { av_log(s, AV_LOG_ERROR, "error reading KLV packet\n"); return -1; } #ifdef DEBUG PRINT_KEY(klv.key); #endif if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) { /* FIXME avoid seek */ url_fseek(&s->pb, klv.offset, SEEK_SET); break; } for (function = mxf_metadata_read_table; function->read; function++) { if (IS_KLV_KEY(klv.key, function->key)) { if (function->read(mxf, &klv) < 0) { av_log(s, AV_LOG_ERROR, "error reading header metadata\n"); return -1; } break; } } if (!function->read) url_fskip(&s->pb, klv.length); } return mxf_parse_structural_metadata(mxf); } static int mxf_read_close(AVFormatContext *s) { MXFContext *mxf = s->priv_data; int i, j, k; for (i = 0; i < mxf->packages_count; i++) { for (j = 0; j < mxf->packages[i]->tracks_count; j++) { for (k = 0; k < mxf->packages[i]->tracks[j]->sequence->structural_components_count; k++) av_freep(&mxf->packages[i]->tracks[j]->sequence->structural_components[k]); av_freep(&mxf->packages[i]->tracks[j]->sequence->structural_components_refs); av_freep(&mxf->packages[i]->tracks[j]->sequence->structural_components); av_freep(&mxf->packages[i]->tracks[j]->sequence); av_freep(&mxf->packages[i]->tracks[j]); } av_freep(&mxf->packages[i]->tracks_refs); av_freep(&mxf->packages[i]->tracks); if (mxf->packages[i]->descriptor) { for (k = 0; k < mxf->packages[i]->descriptor->sub_descriptors_count; k++) av_freep(&mxf->packages[i]->descriptor->sub_descriptors[k]); av_freep(&mxf->packages[i]->descriptor->sub_descriptors_refs); av_freep(&mxf->packages[i]->descriptor->sub_descriptors); } av_freep(&mxf->packages[i]->descriptor); av_freep(&mxf->packages[i]); } av_freep(&mxf->packages_refs); av_freep(&mxf->packages); for (i = 0; i < mxf->essence_container_data_sets_count; i++) av_freep(&mxf->essence_container_data_sets[i]); av_freep(&mxf->essence_container_data_sets_refs); av_freep(&mxf->essence_container_data_sets); av_freep(&mxf->essence_containers_uls); return 0; } static int mxf_probe(AVProbeData *p) { uint8_t *bufp = p->buf; uint8_t *end = p->buf + p->buf_size; if (p->buf_size < sizeof(mxf_header_partition_pack_key)) return 0; /* Must skip Run-In Sequence and search for MXF header partition pack key SMPTE 377M 5.5 */ end -= sizeof(mxf_header_partition_pack_key); for (; bufp < end; bufp++) { if (IS_KLV_KEY(bufp, mxf_header_partition_pack_key)) return AVPROBE_SCORE_MAX; } return 0; } AVInputFormat mxf_demuxer = { "mxf", "MXF format", sizeof(MXFContext), mxf_probe, mxf_read_header, mxf_read_packet, mxf_read_close, NULL, };