928 lines
35 KiB
C
928 lines
35 KiB
C
/*
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* MXF demuxer.
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* Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/*
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* References
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* SMPTE 336M KLV Data Encoding Protocol Using Key-Length-Value
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* SMPTE 377M MXF File Format Specifications
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* SMPTE 378M Operational Pattern 1a
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* SMPTE 379M MXF Generic Container
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* SMPTE 381M Mapping MPEG Streams into the MXF Generic Container
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* SMPTE 382M Mapping AES3 and Broadcast Wave Audio into the MXF Generic Container
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* SMPTE 383M Mapping DV-DIF Data to the MXF Generic Container
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*
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* Principle
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* Search for Track numbers which will identify essence element KLV packets.
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* Search for SourcePackage which define tracks which contains Track numbers.
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* Material Package contains tracks with reference to SourcePackage tracks.
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* Search for Descriptors (Picture, Sound) which contains codec info and parameters.
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* Assign Descriptors to correct Tracks.
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*
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* Metadata reading functions read Local Tags, get InstanceUID(0x3C0A) and then resolve Strong Reference from another object.
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* Returns -1 if Strong Reference could not be resolved.
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*
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* Simple demuxer, only OP1A supported and some files might not work at all.
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* Only tracks with associated descriptors will be decoded. "Highly Desirable" SMPTE 377M D.1
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* Only descriptors with EssenceSoundCompression or PictureEssenceCoding will be taken into account. "D/req" SMPTE 377M
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*/
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//#define DEBUG
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#include "avformat.h"
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#include "dsputil.h"
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typedef DECLARE_ALIGNED_16(uint8_t, UID[16]);
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enum MXFPackageType {
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MaterialPackage,
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SourcePackage,
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};
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enum MXFStructuralComponentType {
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Timecode,
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SourceClip,
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};
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typedef struct MXFStructuralComponent {
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UID uid;
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UID source_package_uid;
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UID data_definition_ul;
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int64_t duration;
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int64_t start_position;
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int source_track_id;
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enum MXFStructuralComponentType type;
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} MXFStructuralComponent;
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typedef struct MXFSequence {
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UID uid;
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UID data_definition_ul;
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MXFStructuralComponent **structural_components;
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UID *structural_components_refs;
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int structural_components_count;
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int64_t duration;
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} MXFSequence;
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typedef struct MXFTrack {
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UID uid;
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MXFSequence *sequence; /* mandatory, and only one */
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UID sequence_ref;
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int track_id;
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int track_number;
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AVRational edit_rate;
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} MXFTrack;
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typedef struct MXFDescriptor {
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UID uid;
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UID essence_container;
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UID essence_compression;
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enum CodecType codec_type;
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AVRational sample_rate;
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AVRational aspect_ratio;
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int width;
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int height;
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int channels;
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int bits_per_sample;
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struct MXFDescriptor **sub_descriptors;
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UID *sub_descriptors_refs;
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int sub_descriptors_count;
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int block_align;
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int linked_track_id;
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} MXFDescriptor;
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typedef struct MXFPackage {
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UID uid;
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UID package_uid;
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MXFTrack **tracks;
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UID *tracks_refs;
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int tracks_count;
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MXFDescriptor *descriptor; /* only one */
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UID descriptor_ref;
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enum MXFPackageType type;
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} MXFPackage;
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typedef struct MXFEssenceContainerData {
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UID uid;
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UID linked_package_uid;
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} MXFEssenceContainerData;
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typedef struct MXFContext {
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MXFPackage **packages;
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UID *packages_refs;
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int packages_count;
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MXFEssenceContainerData **essence_container_data_sets;
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UID *essence_container_data_sets_refs;
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int essence_container_data_sets_count;
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UID *essence_containers_uls; /* Universal Labels SMPTE RP224 */
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int essence_containers_uls_count;
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UID operational_pattern_ul;
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UID content_storage_uid;
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AVFormatContext *fc;
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} MXFContext;
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typedef struct KLVPacket {
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UID key;
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offset_t offset;
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uint64_t length;
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} KLVPacket;
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typedef struct MXFCodecUL {
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UID uid;
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enum CodecID id;
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} MXFCodecUL;
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static const UID mxf_metadata_preface_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x2F, 0x00 };
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static const UID mxf_metadata_content_storage_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x18, 0x00 };
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static const UID mxf_metadata_source_package_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x37, 0x00 };
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static const UID mxf_metadata_material_package_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x36, 0x00 };
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static const UID mxf_metadata_sequence_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x0F, 0x00 };
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static const UID mxf_metadata_source_clip_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x11, 0x00 };
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static const UID mxf_metadata_multiple_descriptor_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x44, 0x00 };
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static const UID mxf_metadata_generic_sound_descriptor_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x42, 0x00 };
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static const UID mxf_metadata_cdci_descriptor_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x28, 0x00 };
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static const UID mxf_metadata_mpegvideo_descriptor_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x51, 0x00 };
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static const UID mxf_metadata_wave_descriptor_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x48, 0x00 };
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static const UID mxf_metadata_static_track_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x3A, 0x00 };
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static const UID mxf_metadata_track_key = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x53, 0x01, 0x01, 0x0d, 0x01, 0x01, 0x01, 0x01, 0x01, 0x3b, 0x00 };
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/* partial keys to match */
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static const uint8_t mxf_header_partition_pack_key[] = { 0x06, 0x0e, 0x2b, 0x34, 0x02, 0x05, 0x01, 0x01, 0x0d, 0x01, 0x02, 0x01, 0x01, 0x02 };
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static const uint8_t mxf_essence_element_key[] = { 0x06, 0x0e, 0x2b, 0x34, 0x01, 0x02, 0x01 };
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#define IS_KLV_KEY(x, y) (!memcmp(x, y, sizeof(y)))
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#define PRINT_KEY(x) \
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do { \
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int iterpk; \
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for (iterpk = 0; iterpk < 16; iterpk++) { \
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av_log(NULL, AV_LOG_DEBUG, "%02X ", x[iterpk]); \
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} \
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av_log(NULL, AV_LOG_DEBUG, "\n"); \
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} while (0); \
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static int64_t klv_decode_ber_length(ByteIOContext *pb)
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{
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int64_t size = 0;
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uint8_t length = get_byte(pb);
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int type = length >> 7;
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if (type) { /* long form */
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int bytes_num = length & 0x7f;
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/* SMPTE 379M 5.3.4 guarantee that bytes_num must not exceed 8 bytes */
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if (bytes_num > 8)
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return -1;
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while (bytes_num--)
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size = size << 8 | get_byte(pb);
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} else {
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size = length & 0x7f;
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}
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return size;
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}
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static int klv_read_packet(KLVPacket *klv, ByteIOContext *pb)
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{
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klv->offset = url_ftell(pb);
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get_buffer(pb, klv->key, 16);
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klv->length = klv_decode_ber_length(pb);
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if (klv->length == -1)
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return -1;
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else
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return 0;
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}
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static int mxf_get_stream_index(AVFormatContext *s, KLVPacket *klv)
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{
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int id = BE_32(klv->key + 12); /* SMPTE 379M 7.3 */
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int i;
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for (i = 0; i < s->nb_streams; i++) {
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if (s->streams[i]->id == id)
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return i;
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}
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return -1;
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}
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static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
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{
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KLVPacket klv;
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while (!url_feof(&s->pb)) {
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if (klv_read_packet(&klv, &s->pb) < 0) {
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av_log(s, AV_LOG_ERROR, "error reading KLV packet\n");
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return -1;
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}
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if (IS_KLV_KEY(klv.key, mxf_essence_element_key)) {
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av_get_packet(&s->pb, pkt, klv.length);
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pkt->stream_index = mxf_get_stream_index(s, &klv);
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if (pkt->stream_index == -1)
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return -1;
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return 0;
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} else
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url_fskip(&s->pb, klv.length);
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}
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return AVERROR_IO;
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}
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static int mxf_read_metadata_preface(MXFContext *mxf, KLVPacket *klv)
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{
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ByteIOContext *pb = &mxf->fc->pb;
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int bytes_read = 0;
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while (bytes_read < klv->length) {
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int tag = get_be16(pb);
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int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */
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switch (tag) {
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case 0x3B03:
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get_buffer(pb, mxf->content_storage_uid, 16);
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break;
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case 0x3B09:
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get_buffer(pb, mxf->operational_pattern_ul, 16);
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break;
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case 0x3B0A:
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mxf->essence_containers_uls_count = get_be32(pb);
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if (mxf->essence_containers_uls_count >= UINT_MAX / sizeof(UID))
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return -1;
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mxf->essence_containers_uls = av_malloc(mxf->essence_containers_uls_count * sizeof(UID));
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
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get_buffer(pb, mxf->essence_containers_uls, mxf->essence_containers_uls_count * sizeof(UID));
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break;
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default:
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url_fskip(pb, size);
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}
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bytes_read += size + 4;
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}
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return 0;
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}
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static int mxf_read_metadata_content_storage(MXFContext *mxf, KLVPacket *klv)
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{
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ByteIOContext *pb = &mxf->fc->pb;
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int bytes_read = 0;
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while (bytes_read < klv->length) {
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int tag = get_be16(pb);
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int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */
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dprintf("tag 0x%04X, size %d\n", tag, size);
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switch (tag) {
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case 0x1901:
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mxf->packages_count = get_be32(pb);
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if (mxf->packages_count >= UINT_MAX / sizeof(UID) ||
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mxf->packages_count >= UINT_MAX / sizeof(*mxf->packages))
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return -1;
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mxf->packages_refs = av_malloc(mxf->packages_count * sizeof(UID));
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mxf->packages = av_mallocz(mxf->packages_count * sizeof(*mxf->packages));
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
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get_buffer(pb, mxf->packages_refs, mxf->packages_count * sizeof(UID));
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break;
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case 0x1902:
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mxf->essence_container_data_sets_count = get_be32(pb);
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if (mxf->essence_container_data_sets_count >= UINT_MAX / sizeof(UID) ||
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mxf->essence_container_data_sets_count >= UINT_MAX / sizeof(*mxf->essence_container_data_sets))
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return -1;
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mxf->essence_container_data_sets_refs = av_malloc(mxf->essence_container_data_sets_count * sizeof(UID));
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mxf->essence_container_data_sets = av_mallocz(mxf->essence_container_data_sets_count * sizeof(*mxf->essence_container_data_sets));
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
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get_buffer(pb, mxf->essence_container_data_sets_refs, mxf->essence_container_data_sets_count * sizeof(UID));
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break;
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default:
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url_fskip(pb, size);
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}
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bytes_read += size + 4;
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}
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return 0;
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}
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static int mxf_read_metadata_source_clip(MXFContext *mxf, KLVPacket *klv)
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{
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ByteIOContext *pb = &mxf->fc->pb;
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MXFStructuralComponent *source_clip = av_mallocz(sizeof(*source_clip));
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int bytes_read = 0;
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int i, j, k;
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source_clip->type = SourceClip;
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while (bytes_read < klv->length) {
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int tag = get_be16(pb);
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int size = get_be16(pb); /* SMPTE 336M Table 8 KLV specified length, 0x53 */
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dprintf("tag 0x%04X, size %d\n", tag, size);
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switch (tag) {
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case 0x3C0A:
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get_buffer(pb, source_clip->uid, 16);
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break;
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case 0x0202:
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source_clip->duration = get_be64(pb);
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break;
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case 0x1201:
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source_clip->start_position = get_be64(pb);
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break;
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case 0x1101:
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/* UMID, only get last 16 bytes */
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url_fskip(pb, 16);
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get_buffer(pb, source_clip->source_package_uid, 16);
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break;
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case 0x1102:
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source_clip->source_track_id = get_be32(pb);
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break;
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default:
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url_fskip(pb, size);
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}
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bytes_read += size + 4;
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}
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for (i = 0; i < mxf->packages_count; i++) {
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if (mxf->packages[i]) {
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for (j = 0; j < mxf->packages[i]->tracks_count; j++) {
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if (mxf->packages[i]->tracks[j] && mxf->packages[i]->tracks[j]->sequence) {
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for (k = 0; k < mxf->packages[i]->tracks[j]->sequence->structural_components_count; k++) {
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if (!memcmp(mxf->packages[i]->tracks[j]->sequence->structural_components_refs[k], source_clip->uid, 16)) {
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mxf->packages[i]->tracks[j]->sequence->structural_components[k] = source_clip;
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return 0;
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}
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}
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}
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}
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}
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}
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return -1;
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}
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static int mxf_read_metadata_material_package(MXFContext *mxf, KLVPacket *klv)
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{
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ByteIOContext *pb = &mxf->fc->pb;
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MXFPackage *package = av_mallocz(sizeof(*package));
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int bytes_read = 0;
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int i;
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package->type = MaterialPackage;
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while (bytes_read < klv->length) {
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int tag = get_be16(pb);
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int size = get_be16(pb); /* KLV specified by 0x53 */
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switch (tag) {
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case 0x3C0A:
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get_buffer(pb, package->uid, 16);
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break;
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case 0x4403:
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package->tracks_count = get_be32(pb);
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if (package->tracks_count >= UINT_MAX / sizeof(UID) ||
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package->tracks_count >= UINT_MAX / sizeof(*package->tracks))
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return -1;
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package->tracks_refs = av_malloc(package->tracks_count * sizeof(UID));
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package->tracks = av_mallocz(package->tracks_count * sizeof(*package->tracks));
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url_fskip(pb, 4); /* useless size of objects, always 16 according to specs */
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get_buffer(pb, package->tracks_refs, package->tracks_count * sizeof(UID));
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break;
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default:
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url_fskip(pb, size);
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}
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bytes_read += size + 4;
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}
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for (i = 0; i < mxf->packages_count; i++) {
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if (!memcmp(mxf->packages_refs[i], package->uid, 16)) {
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mxf->packages[i] = package;
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return 0;
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}
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}
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return -1;
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}
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static int mxf_read_metadata_track(MXFContext *mxf, KLVPacket *klv)
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{
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ByteIOContext *pb = &mxf->fc->pb;
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MXFTrack *track = av_mallocz(sizeof(*track));
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int bytes_read = 0;
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int i, j;
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while (bytes_read < klv->length) {
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int tag = get_be16(pb);
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int size = get_be16(pb); /* KLV specified by 0x53 */
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dprintf("tag 0x%04X, size %d\n", tag, size);
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switch (tag) {
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case 0x3C0A:
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get_buffer(pb, track->uid, 16);
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break;
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case 0x4801:
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track->track_id = get_be32(pb);
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break;
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case 0x4804:
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track->track_number = get_be32(pb);
|
|
dprintf("track number 0x%04X\n", track->track_number);
|
|
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 int mxf_read_metadata_generic_descriptor(MXFContext *mxf, KLVPacket *klv)
|
|
{
|
|
ByteIOContext *pb = &mxf->fc->pb;
|
|
MXFDescriptor *desc = av_mallocz(sizeof(*desc));
|
|
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, desc->uid, 16);
|
|
break;
|
|
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;
|
|
}
|
|
for (i = 0; i < mxf->packages_count; i++) {
|
|
if (mxf->packages[i]) {
|
|
if (!memcmp(mxf->packages[i]->descriptor_ref, desc->uid, 16)) {
|
|
mxf->packages[i]->descriptor = desc;
|
|
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], desc->uid, 16)) {
|
|
mxf->packages[i]->descriptor->sub_descriptors[j] = desc;
|
|
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 }, /* I-Frame */
|
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x04,0x03,0x00 }, CODEC_ID_MPEG2VIDEO }, /* Long GoP */
|
|
{ { 0x06,0x0E,0x2B,0x34,0x04,0x01,0x01,0x03,0x04,0x01,0x02,0x02,0x01,0x02,0x03,0x00 }, CODEC_ID_MPEG2VIDEO }, /* 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 */
|
|
/* 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 */
|
|
};
|
|
|
|
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_number);
|
|
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_compression);
|
|
#endif
|
|
st->codec->codec_id = mxf_get_codec_id(mxf_codec_uls, &descriptor->essence_compression);
|
|
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
|
|
st->codec->width = descriptor->width;
|
|
st->codec->height = descriptor->height;
|
|
} 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 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) {
|
|
av_log(s, AV_LOG_ERROR, "error reading KLV packet\n");
|
|
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_static_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_material_package_key))
|
|
ret = mxf_read_metadata_material_package(mxf, &klv);
|
|
else if (IS_KLV_KEY(klv.key, mxf_metadata_source_clip_key))
|
|
ret = mxf_read_metadata_source_clip(mxf, &klv);
|
|
else if (IS_KLV_KEY(klv.key, mxf_metadata_multiple_descriptor_key))
|
|
ret = mxf_read_metadata_multiple_descriptor(mxf, &klv);
|
|
else if (IS_KLV_KEY(klv.key, mxf_metadata_wave_descriptor_key))
|
|
ret = mxf_read_metadata_generic_descriptor(mxf, &klv);
|
|
else if (IS_KLV_KEY(klv.key, mxf_metadata_mpegvideo_descriptor_key))
|
|
ret = mxf_read_metadata_generic_descriptor(mxf, &klv);
|
|
else if (IS_KLV_KEY(klv.key, mxf_metadata_cdci_descriptor_key))
|
|
ret = mxf_read_metadata_generic_descriptor(mxf, &klv);
|
|
else if (IS_KLV_KEY(klv.key, mxf_metadata_generic_sound_descriptor_key))
|
|
ret = mxf_read_metadata_generic_descriptor(mxf, &klv);
|
|
else if (IS_KLV_KEY(klv.key, mxf_metadata_preface_key))
|
|
ret = mxf_read_metadata_preface(mxf, &klv);
|
|
else if (IS_KLV_KEY(klv.key, mxf_metadata_content_storage_key))
|
|
ret = mxf_read_metadata_content_storage(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) {
|
|
av_log(s, AV_LOG_ERROR, "error reading header metadata\n");
|
|
return ret;
|
|
}
|
|
}
|
|
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) {
|
|
/* 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,
|
|
};
|