From 07bf2af864790e8d0930f66361ec91d95ff12800 Mon Sep 17 00:00:00 2001 From: Baptiste Coudurier Date: Tue, 25 Jul 2006 14:30:14 +0000 Subject: [PATCH] MXF demuxer Originally committed as revision 5826 to svn://svn.ffmpeg.org/ffmpeg/trunk --- Changelog | 1 + MAINTAINERS | 1 + libavformat/Makefile | 1 + libavformat/allformats.c | 3 + libavformat/allformats.h | 1 + libavformat/mxf.c | 508 +++++++++++++++++++++++++++++++++++++++++++++++ 6 files changed, 515 insertions(+) create mode 100644 libavformat/mxf.c diff --git a/Changelog b/Changelog index e32b11c..f9708f9 100644 --- a/Changelog +++ b/Changelog @@ -51,6 +51,7 @@ version - GXF demuxer - Chinese AVS decoder - GXF muxer +- MXF demuxer version 0.4.9-pre1: diff --git a/MAINTAINERS b/MAINTAINERS index d811548..b0c7cc6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -198,6 +198,7 @@ Muxers/Demuxers: img2.c Michael Niedermayer mov.c Francois Revol, Michael Niedermayer mpegts* Mans Rullgard + mxf.c Baptiste Coudurier nsvdec.c Francois Revol nut.c Alex Beregszaszi nuv.c Reimar Doeffinger diff --git a/libavformat/Makefile b/libavformat/Makefile index fb660fd..38d15be 100644 --- a/libavformat/Makefile +++ b/libavformat/Makefile @@ -75,6 +75,7 @@ OBJS-$(CONFIG_MPEGPS_DEMUXER) += mpeg.o OBJS-$(CONFIG_MPEGTS_DEMUXER) += mpegts.o OBJS-$(CONFIG_MPEGTS_MUXER) += mpegtsenc.o OBJS-$(CONFIG_MPJPEG_MUXER) += mpjpeg.o +OBJS-$(CONFIG_MXF_DEMUXER) += mxf.o OBJS-$(CONFIG_NSV_DEMUXER) += nsvdec.o riff.o OBJS-$(CONFIG_NUT_DEMUXER) += nut.o riff.o OBJS-$(CONFIG_NUT_MUXER) += nut.o riff.o diff --git a/libavformat/allformats.c b/libavformat/allformats.c index 3ff29fe..74d97cb 100644 --- a/libavformat/allformats.c +++ b/libavformat/allformats.c @@ -240,6 +240,9 @@ void av_register_all(void) #ifdef CONFIG_MPJPEG_MUXER av_register_output_format(&mpjpeg_muxer); #endif +#ifdef CONFIG_MXF_DEMUXER + av_register_input_format(&mxf_demuxer); +#endif #ifdef CONFIG_NSV_DEMUXER av_register_input_format(&nsv_demuxer); #endif diff --git a/libavformat/allformats.h b/libavformat/allformats.h index f263754..89e1ae7 100644 --- a/libavformat/allformats.h +++ b/libavformat/allformats.h @@ -69,6 +69,7 @@ extern AVInputFormat mpegps_demuxer; extern AVInputFormat mpegts_demuxer; extern AVOutputFormat mpegts_muxer; extern AVOutputFormat mpjpeg_muxer; +extern AVInputFormat mxf_demuxer; extern AVInputFormat nsv_demuxer; extern AVInputFormat nut_demuxer; extern AVOutputFormat nut_muxer; diff --git a/libavformat/mxf.c b/libavformat/mxf.c new file mode 100644 index 0000000..2515e84 --- /dev/null +++ b/libavformat/mxf.c @@ -0,0 +1,508 @@ +/* + * 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 tracks does not contain Tracks numbers. + * Search for Descriptors (Picture, Sound) which contains codec info and parameters. + * Assign Descriptors to correct Tracks. + * + * Preliminary demuxer, only OP1A supported and some files might not work at all. + */ + +//#define DEBUG + +#include "avformat.h" +#include "dsputil.h" +#include "riff.h" + +typedef struct { + AVStream *stream; + uint8_t track_uid[16]; + uint8_t sequence_uid[16]; + int track_id; + int track_number; +} MXFTrack; + +typedef struct { + DECLARE_ALIGNED_16(uint8_t, essence_container[16]); + DECLARE_ALIGNED_16(uint8_t, essence_compression[16]); + enum CodecType codec_type; + AVRational sample_rate; + AVRational aspect_ratio; + int width; + int height; + int channels; + int bits_per_sample; + int block_align; + int linked_track_id; + int kind; +} MXFDescriptor; + +typedef struct { + AVFormatContext *fc; + MXFTrack *tracks; + MXFDescriptor *descriptors; + int descriptors_count; + int tracks_count; +} MXFContext; + +typedef struct { + DECLARE_ALIGNED_16(uint8_t, key[16]); + offset_t offset; + uint64_t length; +} KLVPacket; + +static const uint8_t mxf_metadata_source_package_key[] = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x37, 0x00 }; +static const uint8_t mxf_metadata_sequence_key[] = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x0F, 0x00 }; +static const uint8_t mxf_metadata_generic_sound_descriptor_key[] = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x42, 0x00 }; +static const uint8_t mxf_metadata_cdci_descriptor_key[] = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x28, 0x00 }; +static const uint8_t mxf_metadata_mpegvideo_descriptor_key[] = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x51, 0x00 }; +static const uint8_t mxf_metadata_wave_descriptor_key[] = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x48, 0x00 }; +static const uint8_t mxf_metadata_track_key[] = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x3b, 0x00 }; +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 }; + +#define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y))) + +#define PRINT_KEY(x) \ +do { \ + int iterpk; \ + for (iterpk = 0; iterpk < 16; iterpk++) { \ + av_log(NULL, AV_LOG_DEBUG, "%02X ", x[iterpk]); \ + } \ + av_log(NULL, AV_LOG_DEBUG, "\n"); \ +} while (0); \ + +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); + if (klv->length == -1) + return -1; + else + return 0; +} + +static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv) +{ + int id = BE_32(klv->key + 12); /* SMPTE 379M 7.3 */ + int i; + + for (i = 0; i < s->nb_streams; i++) { + if (s->streams[i]->id == id) + 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) + return -1; + 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); + if (pkt->stream_index == -1) + return -1; + return 0; + } else + url_fskip(&s->pb, klv.length); + } + return AVERROR_IO; +} + +static int mxf_read_metadata_track(MXFContext *mxf, KLVPacket *klv) +{ + ByteIOContext *pb = &mxf->fc->pb; + AVRational time_base = (AVRational){0, 0}; + uint8_t sequence_uid[16]; + uint8_t track_uid[16]; + int track_number = 0; + int track_id = 0; + int bytes_read = 0; + int i; + + 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 0x4801: + track_id = get_be32(pb); + break; + case 0x4804: + track_number = get_be32(pb); + break; + case 0x4B01: + time_base.den = get_be32(pb); + time_base.num = get_be32(pb); + break; + case 0x4803: + get_buffer(pb, sequence_uid, 16); + break; + case 0x3C0A: + get_buffer(pb, track_uid, 16); + break; + default: + url_fskip(pb, size); + } + bytes_read += size + 4; + } + for (i = 0; i < mxf->tracks_count; i++) + if (!memcmp(track_uid, mxf->tracks[i].track_uid, 16)) { + mxf->tracks[i].track_id = track_id; + mxf->tracks[i].track_number = track_number; + mxf->tracks[i].stream->time_base = time_base; + mxf->tracks[i].stream->id = track_number; + memcpy(mxf->tracks[i].sequence_uid, sequence_uid, 16); + } + return bytes_read; +} + +static int mxf_read_metadata_sequence(MXFContext *mxf, KLVPacket *klv) +{ + ByteIOContext *pb = &mxf->fc->pb; + uint8_t sequence_uid[16]; + uint8_t data_definition[16]; + uint64_t duration = 0; + 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 */ + + switch (tag) { + case 0x3C0A: + get_buffer(pb, sequence_uid, 16); + break; + case 0x0202: + duration = get_be64(pb); + break; + case 0x0201: + get_buffer(pb, data_definition, 16); + break; + default: + url_fskip(pb, size); + } + bytes_read += size + 4; + } + + for (i = 0; i < mxf->tracks_count; i++) + if (!memcmp(sequence_uid, mxf->tracks[i].sequence_uid, 16)) { + mxf->tracks[i].stream->duration = duration; + if (data_definition[11] == 0x02 && data_definition[12] == 0x01) + mxf->tracks[i].stream->codec->codec_type = CODEC_TYPE_VIDEO; + else if (data_definition[11] == 0x02 && data_definition[12] == 0x02) + mxf->tracks[i].stream->codec->codec_type = CODEC_TYPE_AUDIO; + else if (data_definition[11] == 0x01) /* SMPTE 12M Time Code track */ + mxf->tracks[i].stream->codec->codec_type = CODEC_TYPE_DATA; + } + return bytes_read; +} + +static int mxf_read_metadata_source_package(MXFContext *mxf, KLVPacket *klv) +{ + ByteIOContext *pb = &mxf->fc->pb; + int tracks_count; + 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 */ + + switch (tag) { + case 0x4403: + tracks_count = get_be32(pb); + if(tracks_count >= UINT_MAX / sizeof(*mxf->tracks) || + tracks_count >= UINT_MAX / sizeof(*mxf->descriptors)) + return -1; + mxf->tracks_count += tracks_count; /* op2a contains multiple source packages */ + mxf->tracks = av_realloc(mxf->tracks, mxf->tracks_count * sizeof(*mxf->tracks)); + mxf->descriptors = av_realloc(mxf->descriptors, mxf->tracks_count * sizeof(*mxf->descriptors)); + url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */ + for (i = mxf->tracks_count - tracks_count; i < mxf->tracks_count; i++) { + mxf->tracks[i].stream = av_new_stream(mxf->fc, 0); + get_buffer(pb, mxf->tracks[i].track_uid, 16); + } + break; + default: + url_fskip(pb, size); + } + bytes_read += size + 4; + } + return bytes_read; +} + +static int mxf_read_metadata_descriptor(MXFContext *mxf, KLVPacket *klv) +{ + ByteIOContext *pb = &mxf->fc->pb; + MXFDescriptor *desc; + int bytes_read = 0; + + if (mxf->descriptors_count == mxf->tracks_count) + return -1; + desc = &mxf->descriptors[mxf->descriptors_count++]; + desc->kind = klv->key[14]; + desc->linked_track_id = -1; + + while (bytes_read < klv->length) { + int tag = get_be16(pb); + int size = get_be16(pb); /* KLV specified by 0x53 */ + + switch (tag) { + case 0x3004: + get_buffer(pb, desc->essence_container, 16); + break; + case 0x3006: + desc->linked_track_id = get_be32(pb); + break; + case 0x3201: /* PictureEssenceCoding */ + desc->codec_type = CODEC_TYPE_VIDEO; + get_buffer(pb, desc->essence_compression, 16); + break; + case 0x3203: + desc->width = get_be32(pb); + break; + case 0x3202: + desc->height = get_be32(pb); + break; + case 0x320E: + desc->aspect_ratio.num = get_be32(pb); + desc->aspect_ratio.den = get_be32(pb); + break; + case 0x3D0A: + desc->block_align = get_be16(pb); + break; + case 0x3D03: + desc->sample_rate.num = get_be32(pb); + desc->sample_rate.den = get_be32(pb); + break; + case 0x3D06: /* SoundEssenceCompression */ + desc->codec_type = CODEC_TYPE_AUDIO; + get_buffer(pb, desc->essence_compression, 16); + break; + case 0x3D07: + desc->channels = get_be32(pb); + break; + case 0x3D01: + desc->bits_per_sample = get_be32(pb); + break; + default: + url_fskip(pb, size); + } + bytes_read += size + 4; + } + return bytes_read; +} + +/* SMPTE RP224 http://www.smpte-ra.org/mdd/index.html */ +static const CodecTag mxf_sound_essence_labels[] = { + { CODEC_ID_PCM_S16LE, 0x01000000 },/* Uncompressed Sound Coding */ + { CODEC_ID_PCM_S16LE, 0x017F0000 },/* Uncompressed Sound Coding */ + { CODEC_ID_PCM_S16BE, 0x017E0000 },/* Uncompressed Sound Coding Big Endian*/ + { CODEC_ID_PCM_ALAW, 0x02030101 }, + { CODEC_ID_AC3, 0x02030201 }, + //{ CODEC_ID_MP1, 0x02030104 }, + { CODEC_ID_MP2, 0x02030105 },/* MP2 or MP3 */ + //{ CODEC_ID_MP2, 0x02030106 },/* MPEG-2 Layer 1 */ + //{ CODEC_ID_???, 0x0203010C },/* Dolby E */ + //{ CODEC_ID_???, 0x02030301 },/* MPEG-2 AAC */ + { 0, 0 }, +}; + +static const CodecTag mxf_picture_essence_labels[] = { + { CODEC_ID_RAWVIDEO, 0x0100 }, + { CODEC_ID_MPEG2VIDEO, 0x0201 }, + { CODEC_ID_DVVIDEO, 0x0202 }, + //{ CODEC_ID_???, 0x0207 },/* D-11 HDCAM */ + { 0, 0 }, +}; + +static const CodecTag mxf_container_picture_labels[] = { + { CODEC_ID_MPEG2VIDEO, 0x0201 }, /* D-10 Mapping */ + { CODEC_ID_DVVIDEO, 0x0202 }, /* DV Mapping */ + //{ CODEC_ID_???, 0x0203 }, /* HDCAM D-11 Mapping */ + { CODEC_ID_MPEG2VIDEO, 0x0204 }, /* MPEG ES Mapping */ +}; + +static const CodecTag mxf_container_sound_labels[] = { + //{ CODEC_ID_PCM_S16??, 0x0201 }, /* D-10 Mapping */ + { CODEC_ID_MP2, 0x0204 }, /* MPEG ES Mapping */ + { CODEC_ID_PCM_S16LE, 0x0206 }, /* AES BWF Mapping */ + { CODEC_ID_PCM_ALAW, 0x020A }, + { 0, 0 }, +}; + +static void mxf_resolve_track_descriptor(MXFContext *mxf) +{ + uint32_t container_label; + uint32_t essence_label; + int i, j; + + for (i = 0; i < mxf->descriptors_count; i++) { + for (j = 0; j < mxf->tracks_count; j++) { + AVStream *st = mxf->tracks[j].stream; + MXFDescriptor *desc = &mxf->descriptors[i]; + + if ((desc->linked_track_id == -1 && st->codec->codec_type == desc->codec_type) + || desc->linked_track_id == mxf->tracks[j].track_id) { + if (st->codec->codec_type == CODEC_TYPE_AUDIO) { + st->codec->channels = desc->channels; + st->codec->bits_per_sample = desc->bits_per_sample; + st->codec->block_align = desc->block_align; + st->codec->sample_rate = desc->sample_rate.num / desc->sample_rate.den; + + container_label = BE_16(desc->essence_container + 12); + essence_label = BE_32(desc->essence_compression + 11); + st->codec->codec_id = codec_get_id(mxf_sound_essence_labels, essence_label); + if (st->codec->codec_id == CODEC_ID_PCM_S16LE) { + if (desc->bits_per_sample == 24) + st->codec->codec_id = CODEC_ID_PCM_S24LE; + else if (desc->bits_per_sample == 32) + st->codec->codec_id = CODEC_ID_PCM_S32LE; + } + if (st->codec->codec_id == CODEC_ID_PCM_S16BE) { + if (desc->bits_per_sample == 24) + st->codec->codec_id = CODEC_ID_PCM_S24BE; + else if (desc->bits_per_sample == 32) + st->codec->codec_id = CODEC_ID_PCM_S32BE; + } + if (!st->codec->codec_id) + st->codec->codec_id = codec_get_id(mxf_container_sound_labels, container_label); + + } else if (st->codec->codec_type == CODEC_TYPE_VIDEO) { + st->codec->width = desc->width; + st->codec->height = desc->height; + + container_label = BE_16(desc->essence_container + 12); + essence_label = BE_16(desc->essence_compression + 11); + st->codec->codec_id = codec_get_id(mxf_picture_essence_labels, essence_label); + if (!st->codec->codec_id) + st->codec->codec_id = codec_get_id(mxf_container_picture_labels, container_label); + } + } + } + } +} + +static int mxf_read_header(AVFormatContext *s, AVFormatParameters *ap) +{ + MXFContext *mxf = s->priv_data; + KLVPacket klv; + int ret = 0; + + mxf->fc = s; + while (!url_feof(&s->pb)) { + if (klv_read_packet(&klv, &s->pb) < 0) + return -1; + if (IS_KLV_KEY(klv.key, mxf_metadata_track_key)) + ret = mxf_read_metadata_track(mxf, &klv); + else if (IS_KLV_KEY(klv.key, mxf_metadata_source_package_key)) + ret = mxf_read_metadata_source_package(mxf, &klv); + else if (IS_KLV_KEY(klv.key, mxf_metadata_sequence_key)) + ret = mxf_read_metadata_sequence(mxf, &klv); + else if (IS_KLV_KEY(klv.key, mxf_metadata_wave_descriptor_key)) + ret = mxf_read_metadata_descriptor(mxf, &klv); + else if (IS_KLV_KEY(klv.key, mxf_metadata_mpegvideo_descriptor_key)) + ret = mxf_read_metadata_descriptor(mxf, &klv); + else if (IS_KLV_KEY(klv.key, mxf_metadata_cdci_descriptor_key)) + ret = mxf_read_metadata_descriptor(mxf, &klv); + else if (IS_KLV_KEY(klv.key, mxf_metadata_generic_sound_descriptor_key)) + ret = mxf_read_metadata_descriptor(mxf, &klv); + else if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) { + /* FIXME avoid seek */ + url_fseek(&s->pb, klv.offset, SEEK_SET); + break; + } else + url_fskip(&s->pb, klv.length); + if (ret < 0) + return ret; + } + mxf_resolve_track_descriptor(mxf); + return 0; +} + +static int mxf_read_close(AVFormatContext *s) +{ + MXFContext *mxf = s->priv_data; + + av_freep(&mxf->tracks); + av_freep(&mxf->descriptors); + return 0; +} + +static int mxf_probe(AVProbeData *p) { + /* KLV packet describing MXF header partition pack */ + if (p->buf_size < sizeof(mxf_header_partition_pack_key)) + return 0; + + if (IS_KLV_KEY(p->buf, mxf_header_partition_pack_key)) + return AVPROBE_SCORE_MAX; + else + return 0; +} + + +AVInputFormat mxf_demuxer = { + "mxf", + "MXF format", + sizeof(MXFContext), + mxf_probe, + mxf_read_header, + mxf_read_packet, + mxf_read_close, + NULL, +}; -- 2.7.4