mxfdec.c File Reference

#include <inttypes.h>
#include "libavutil/aes.h"
#include "libavutil/avassert.h"
#include "libavutil/mathematics.h"
#include "libavcodec/bytestream.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/parseutils.h"
#include "libavutil/timecode.h"
#include "avformat.h"
#include "internal.h"
#include "mxf.h"

Go to the source code of this file.

Data Structures
struct	MXFPartition
struct	MXFCryptoContext
struct	MXFStructuralComponent
struct	MXFSequence
struct	MXFTimecodeComponent
struct	MXFPulldownComponent
struct	MXFEssenceGroup
struct	MXFTaggedValue
struct	MXFTrack
struct	MXFDescriptor
struct	MXFIndexTableSegment
struct	MXFPackage
struct	MXFMetadataSet
struct	MXFIndexTable
struct	MXFContext
struct	MXFMetadataReadTableEntry

Macros
#define	MXF_FIELD_DOMINANCE_DEFAULT   0
#define	MXF_FIELD_DOMINANCE_FF   1 /* coded first, displayed first */
#define	MXF_FIELD_DOMINANCE_FL   2 /* coded first, displayed last */
#define	IS_KLV_KEY(x, y)   (!memcmp(x, y, sizeof(y)))
#define	READ_STR16(type, big_endian)
#define	SET_STR_METADATA(pb, name, str)
#define	SET_UID_METADATA(pb, name, var, str)
#define	SET_TS_METADATA(pb, name, var, str)

Typedefs
typedef int	MXFMetadataReadFunc (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)

Enumerations
enum	MXFPartitionType { Header, BodyPartition, Footer }
enum	MXFOP {   OP1a = 1, OP1b, OP1c, OP2a,   OP2b, OP2c, OP3a, OP3b,   OP3c, OPAtom, OPSONYOpt }
enum	MXFWrappingScheme { Frame, Clip }

Functions
static int	mxf_read_close (AVFormatContext *s)
static void	mxf_free_metadataset (MXFMetadataSet **ctx, int freectx)
static int64_t	klv_decode_ber_length (AVIOContext *pb)
static int	mxf_read_sync (AVIOContext *pb, const uint8_t *key, unsigned size)
static int	klv_read_packet (KLVPacket *klv, AVIOContext *pb)
static int	mxf_get_stream_index (AVFormatContext *s, KLVPacket *klv)
static int	mxf_get_d10_aes3_packet (AVIOContext *pb, AVStream *st, AVPacket *pkt, int64_t length)
static int	mxf_decrypt_triplet (AVFormatContext *s, AVPacket *pkt, KLVPacket *klv)
static int	mxf_read_primer_pack (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_partition_pack (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_add_metadata_set (MXFContext *mxf, void *metadata_set)
static int	mxf_read_cryptographic_context (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_strong_ref_array (AVIOContext *pb, UID **refs, int *count)
static int	mxf_read_utf16_string (AVIOContext *pb, int size, char **str, int be)
static int	mxf_read_content_storage (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_source_clip (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_timecode_component (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_pulldown_component (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_track (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_sequence (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_essence_group (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_package (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_index_entry_array (AVIOContext *pb, MXFIndexTableSegment *segment)
static int	mxf_read_index_table_segment (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static void	mxf_read_pixel_layout (AVIOContext *pb, MXFDescriptor *descriptor)
static int	mxf_read_generic_descriptor (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_read_indirect_value (void *arg, AVIOContext *pb, int size)
static int	mxf_read_tagged_value (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_match_uid (const UID key, const UID uid, int len)
static const MXFCodecUL *	mxf_get_codec_ul (const MXFCodecUL *uls, UID *uid)
static void *	mxf_resolve_strong_ref (MXFContext *mxf, UID *strong_ref, enum MXFMetadataSetType type)
static int	mxf_get_sorted_table_segments (MXFContext *mxf, int *nb_sorted_segments, MXFIndexTableSegment ***sorted_segments)
static int	mxf_absolute_bodysid_offset (MXFContext *mxf, int body_sid, int64_t offset, int64_t *offset_out)
	Computes the absolute file offset of the given essence container offset. More...
static int64_t	mxf_essence_container_end (MXFContext *mxf, int body_sid)
	Returns the end position of the essence container with given BodySID, or zero if unknown. More...
static int	mxf_edit_unit_absolute_offset (MXFContext *mxf, MXFIndexTable *index_table, int64_t edit_unit, int64_t *edit_unit_out, int64_t *offset_out, int nag)
static int	mxf_compute_ptses_fake_index (MXFContext *mxf, MXFIndexTable *index_table)
static int	mxf_compute_index_tables (MXFContext *mxf)
	Sorts and collects index table segments into index tables. More...
static int	mxf_is_intra_only (MXFDescriptor *descriptor)
static int	mxf_uid_to_str (UID uid, char **str)
static int	mxf_umid_to_str (UID ul, UID uid, char **str)
static int	mxf_add_umid_metadata (AVDictionary **pm, const char *key, MXFPackage *package)
static int	mxf_add_timecode_metadata (AVDictionary **pm, const char *key, AVTimecode *tc)
static MXFTimecodeComponent *	mxf_resolve_timecode_component (MXFContext *mxf, UID *strong_ref)
static MXFPackage *	mxf_resolve_source_package (MXFContext *mxf, UID package_uid)
static MXFDescriptor *	mxf_resolve_multidescriptor (MXFContext *mxf, MXFDescriptor *descriptor, int track_id)
static MXFStructuralComponent *	mxf_resolve_essence_group_choice (MXFContext *mxf, MXFEssenceGroup *essence_group)
static MXFStructuralComponent *	mxf_resolve_sourceclip (MXFContext *mxf, UID *strong_ref)
static int	mxf_parse_package_comments (MXFContext *mxf, AVDictionary **pm, MXFPackage *package)
static int	mxf_parse_physical_source_package (MXFContext *mxf, MXFTrack *source_track, AVStream *st)
static int	mxf_add_metadata_stream (MXFContext *mxf, MXFTrack *track)
static int	mxf_parse_structural_metadata (MXFContext *mxf)
static int64_t	mxf_timestamp_to_int64 (uint64_t timestamp)
static int	mxf_read_identification_metadata (void *arg, AVIOContext *pb, int tag, int size, UID _uid, int64_t klv_offset)
static int	mxf_read_preface_metadata (void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)
static int	mxf_metadataset_init (MXFMetadataSet *ctx, enum MXFMetadataSetType type)
static int	mxf_read_local_tags (MXFContext *mxf, KLVPacket *klv, MXFMetadataReadFunc *read_child, int ctx_size, enum MXFMetadataSetType type)
static int	mxf_is_partition_pack_key (UID key)
	Matches any partition pack key, in other words: More...
static int	mxf_parse_klv (MXFContext *mxf, KLVPacket klv, MXFMetadataReadFunc *read, int ctx_size, enum MXFMetadataSetType type)
	Parses a metadata KLV. More...
static int	mxf_seek_to_previous_partition (MXFContext *mxf)
	Seeks to the previous partition and parses it, if possible. More...
static int	mxf_parse_handle_essence (MXFContext *mxf)
	Called when essence is encountered. More...
static int	mxf_parse_handle_partition_or_eof (MXFContext *mxf)
	Called when the next partition or EOF is encountered. More...
static void	mxf_compute_essence_containers (MXFContext *mxf)
	Figures out the proper offset and length of the essence container in each partition. More...
static int64_t	round_to_kag (int64_t position, int kag_size)
static int	is_pcm (enum AVCodecID codec_id)
static AVStream *	mxf_get_opatom_stream (MXFContext *mxf)
static void	mxf_handle_small_eubc (AVFormatContext *s)
	Deal with the case where for some audio atoms EditUnitByteCount is very small (2, 4..). More...
static int	mxf_handle_missing_index_segment (MXFContext *mxf)
	Deal with the case where OPAtom files does not have any IndexTableSegments. More...
static void	mxf_read_random_index_pack (AVFormatContext *s)
static int	mxf_read_header (AVFormatContext *s)
static int64_t	mxf_set_current_edit_unit (MXFContext *mxf, int64_t current_offset)
	Sets mxf->current_edit_unit based on what offset we're currently at. More...
static int	mxf_compute_sample_count (MXFContext *mxf, int stream_index, uint64_t *sample_count)
static int	mxf_set_audio_pts (MXFContext *mxf, AVCodecParameters *par, AVPacket *pkt)
static int	mxf_read_packet_old (AVFormatContext *s, AVPacket *pkt)
static int	mxf_read_packet (AVFormatContext *s, AVPacket *pkt)
static int	mxf_probe (AVProbeData *p)
static int	mxf_read_seek (AVFormatContext *s, int stream_index, int64_t sample_time, int flags)

Variables
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 }
static const uint8_t	mxf_avid_essence_element_key [] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 }
static const uint8_t	mxf_canopus_essence_element_key [] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x0a,0x0e,0x0f,0x03,0x01 }
static const uint8_t	mxf_system_item_key [] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x03,0x01,0x04 }
static const uint8_t	mxf_klv_key [] = { 0x06,0x0e,0x2b,0x34 }
static const uint8_t	mxf_crypto_source_container_ul [] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x02,0x02,0x00,0x00,0x00 }
static const uint8_t	mxf_encrypted_triplet_key [] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 }
static const uint8_t	mxf_encrypted_essence_container [] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 }
static const uint8_t	mxf_random_index_pack_key [] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x11,0x01,0x00 }
static const uint8_t	mxf_sony_mpeg4_extradata [] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 }
static const uint8_t	mxf_avid_project_name [] = { 0xa5,0xfb,0x7b,0x25,0xf6,0x15,0x94,0xb9,0x62,0xfc,0x37,0x17,0x49,0x2d,0x42,0xbf }
static const uint8_t	mxf_jp2k_rsiz [] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }
static const uint8_t	mxf_indirect_value_utf16le [] = { 0x4c,0x00,0x02,0x10,0x01,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 }
static const uint8_t	mxf_indirect_value_utf16be [] = { 0x42,0x01,0x10,0x02,0x00,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 }
static const MXFCodecUL	mxf_picture_essence_container_uls []
static const MXFCodecUL	mxf_intra_only_essence_container_uls []
static const MXFCodecUL	mxf_intra_only_picture_essence_coding_uls []
static const MXFCodecUL	mxf_intra_only_picture_coded_width []
static const MXFCodecUL	mxf_sound_essence_container_uls []
static const MXFCodecUL	mxf_data_essence_container_uls []
static const char *const	mxf_data_essence_descriptor []
static const MXFMetadataReadTableEntry	mxf_metadata_read_table []
AVInputFormat	ff_mxf_demuxer

Macro Definition Documentation

#define MXF_FIELD_DOMINANCE_DEFAULT   0

Definition at line 179 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

#define MXF_FIELD_DOMINANCE_FF   1 /* coded first, displayed first */

Definition at line 180 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

#define MXF_FIELD_DOMINANCE_FL   2 /* coded first, displayed last */

Definition at line 181 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

#define IS_KLV_KEY	(		x,
			y
	)		(!memcmp(x, y, sizeof(y)))

Definition at line 305 of file mxfdec.c.

Referenced by mxf_decrypt_triplet(), mxf_parse_structural_metadata(), mxf_read_cryptographic_context(), mxf_read_generic_descriptor(), mxf_read_header(), mxf_read_packet_old(), mxf_read_preface_metadata(), and mxf_read_random_index_pack().

#define READ_STR16	(		type,
			big_endian
	)

Value:

static int mxf_read_utf16 ## type ##_string(AVIOContext *pb, int size, char** str) \
{                                                                                  \
return mxf_read_utf16_string(pb, size, str, big_endian);                           \
}

Definition at line 741 of file mxfdec.c.

#define SET_STR_METADATA	(		pb,
			name,
			str
	)

Value:

do { \
    if ((ret = mxf_read_utf16be_string(pb, size, &str)) < 0) \
        return ret; \
    av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
} while (0)

Definition at line 2299 of file mxfdec.c.

Referenced by mxf_read_identification_metadata(), and mxf_read_preface_metadata().

#define SET_UID_METADATA	(		pb,
			name,
			var,
			str
	)

Value:

do { \
    avio_read(pb, var, 16); \
    if ((ret = mxf_uid_to_str(var, &str)) < 0) \
        return ret; \
    av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
} while (0)

Definition at line 2305 of file mxfdec.c.

Referenced by mxf_read_identification_metadata().

#define SET_TS_METADATA	(		pb,
			name,
			var,
			str
	)

Value:

do { \
    var = avio_rb64(pb); \
    if ((ret = avpriv_dict_set_timestamp(&s->metadata, name, mxf_timestamp_to_int64(var)) < 0)) \
        return ret; \
} while (0)

Definition at line 2312 of file mxfdec.c.

Referenced by mxf_read_identification_metadata().

Typedef Documentation

typedef int MXFMetadataReadFunc(void *arg, AVIOContext *pb, int tag, int size, UID uid, int64_t klv_offset)

Definition at line 276 of file mxfdec.c.

Enumeration Type Documentation

enum MXFPartitionType

Enumerator
Header
BodyPartition
Footer

Definition at line 59 of file mxfdec.c.

enum MXFOP

Enumerator
OP1a
OP1b
OP1c
OP2a
OP2b
OP2c
OP3a
OP3b
OP3c
OPAtom
OPSONYOpt

Definition at line 65 of file mxfdec.c.

enum MXFWrappingScheme

Enumerator
Frame
Clip

Definition at line 270 of file mxfdec.c.

Function Documentation

static int mxf_read_close ( AVFormatContext *  s )

static

Definition at line 3229 of file mxfdec.c.

Referenced by mxf_read_header().

static void mxf_free_metadataset ( MXFMetadataSet **  ctx, int  freectx  )

static

Definition at line 307 of file mxfdec.c.

Referenced by mxf_handle_missing_index_segment(), mxf_read_close(), and mxf_read_local_tags().

static int64_t klv_decode_ber_length ( AVIOContext *  pb )

static

Definition at line 348 of file mxfdec.c.

Referenced by klv_read_packet(), and mxf_decrypt_triplet().

static int mxf_read_sync ( AVIOContext *  pb, const uint8_t *  key, unsigned  size  )

static

Definition at line 363 of file mxfdec.c.

Referenced by klv_read_packet(), and mxf_read_header().

static int klv_read_packet ( KLVPacket *  klv, AVIOContext *  pb  )

static

Definition at line 376 of file mxfdec.c.

Referenced by mxf_read_header(), mxf_read_packet_old(), mxf_read_random_index_pack(), and mxf_seek_to_previous_partition().

static int mxf_get_stream_index ( AVFormatContext *  s, KLVPacket *  klv  )

static

Definition at line 387 of file mxfdec.c.

Referenced by mxf_decrypt_triplet(), and mxf_read_packet_old().

static int mxf_get_d10_aes3_packet ( AVIOContext *  pb, AVStream *  st, AVPacket *  pkt, int64_t  length  )

static

Definition at line 402 of file mxfdec.c.

Referenced by mxf_read_packet_old().

static int mxf_decrypt_triplet ( AVFormatContext *  s, AVPacket *  pkt, KLVPacket *  klv  )

static

Definition at line 430 of file mxfdec.c.

Referenced by mxf_read_packet_old().

static int mxf_read_primer_pack ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 493 of file mxfdec.c.

static int mxf_read_partition_pack ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 519 of file mxfdec.c.

Referenced by mxf_seek_to_previous_partition().

static int mxf_add_metadata_set ( MXFContext *  mxf, void *  metadata_set  )

static

Definition at line 679 of file mxfdec.c.

Referenced by mxf_handle_missing_index_segment(), and mxf_read_local_tags().

static int mxf_read_cryptographic_context ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 692 of file mxfdec.c.

static int mxf_read_strong_ref_array ( AVIOContext *  pb, UID **  refs, int *  count  )

static

Definition at line 702 of file mxfdec.c.

Referenced by mxf_read_content_storage(), mxf_read_essence_group(), mxf_read_generic_descriptor(), mxf_read_package(), and mxf_read_sequence().

static int mxf_read_utf16_string ( AVIOContext *  pb, int  size, char **  str, int  be  )

inlinestatic

Definition at line 715 of file mxfdec.c.

static int mxf_read_content_storage ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 750 of file mxfdec.c.

static int mxf_read_source_clip ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 763 of file mxfdec.c.

static int mxf_read_timecode_component ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 785 of file mxfdec.c.

static int mxf_read_pulldown_component ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 802 of file mxfdec.c.

static int mxf_read_track ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 813 of file mxfdec.c.

static int mxf_read_sequence ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 837 of file mxfdec.c.

static int mxf_read_essence_group ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 857 of file mxfdec.c.

static int mxf_read_package ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 871 of file mxfdec.c.

static int mxf_read_index_entry_array ( AVIOContext *  pb, MXFIndexTableSegment *  segment  )

static

Definition at line 895 of file mxfdec.c.

Referenced by mxf_read_index_table_segment().

static int mxf_read_index_table_segment ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 925 of file mxfdec.c.

static void mxf_read_pixel_layout ( AVIOContext *  pb, MXFDescriptor *  descriptor  )

static

Definition at line 962 of file mxfdec.c.

Referenced by mxf_read_generic_descriptor().

static int mxf_read_generic_descriptor ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 982 of file mxfdec.c.

static int mxf_read_indirect_value ( void *  arg, AVIOContext *  pb, int  size  )

static

Definition at line 1086 of file mxfdec.c.

Referenced by mxf_read_tagged_value().

static int mxf_read_tagged_value ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 1104 of file mxfdec.c.

static int mxf_match_uid ( const UID  key, const UID  uid, int  len  )

static

Definition at line 1120 of file mxfdec.c.

Referenced by mxf_get_codec_ul().

static const MXFCodecUL* mxf_get_codec_ul ( const MXFCodecUL *  uls, UID *  uid  )

static

Definition at line 1130 of file mxfdec.c.

Referenced by mxf_add_metadata_stream(), mxf_is_intra_only(), and mxf_parse_structural_metadata().

static void* mxf_resolve_strong_ref ( MXFContext *  mxf, UID *  strong_ref, enum MXFMetadataSetType  type  )

static

Definition at line 1140 of file mxfdec.c.

Referenced by mxf_parse_package_comments(), mxf_parse_physical_source_package(), mxf_parse_structural_metadata(), mxf_resolve_essence_group_choice(), mxf_resolve_multidescriptor(), mxf_resolve_sourceclip(), and mxf_resolve_timecode_component().

static int mxf_get_sorted_table_segments ( MXFContext *  mxf, int *  nb_sorted_segments, MXFIndexTableSegment ***  sorted_segments  )

static

Definition at line 1211 of file mxfdec.c.

Referenced by mxf_compute_index_tables().

static int mxf_absolute_bodysid_offset ( MXFContext *  mxf, int  body_sid, int64_t  offset, int64_t *  offset_out  )

static

Computes the absolute file offset of the given essence container offset.

Definition at line 1279 of file mxfdec.c.

Referenced by mxf_edit_unit_absolute_offset().

static int64_t mxf_essence_container_end ( MXFContext *  mxf, int  body_sid  )

static

Returns the end position of the essence container with given BodySID, or zero if unknown.

Definition at line 1308 of file mxfdec.c.

Referenced by mxf_read_packet().

static int mxf_edit_unit_absolute_offset ( MXFContext *  mxf, MXFIndexTable *  index_table, int64_t  edit_unit, int64_t *  edit_unit_out, int64_t *  offset_out, int  nag  )

static

Definition at line 1329 of file mxfdec.c.

Referenced by mxf_read_packet(), mxf_read_seek(), and mxf_set_current_edit_unit().

static int mxf_compute_ptses_fake_index ( MXFContext *  mxf, MXFIndexTable *  index_table  )

static

We have this:

x TemporalOffset 0: 0 1: 1 2: 1 3: -2 4: 1 5: 1 6: -2

We want to transform it into this:

x DTS PTS 0: -1 0 1: 0 3 2: 1 1 3: 2 2 4: 3 6 5: 4 4 6: 5 5

We do this by bucket sorting x by x+TemporalOffset[x] into mxf->ptses, then settings mxf->first_dts = -max(TemporalOffset[x]). The latter makes DTS <= PTS.

Definition at line 1377 of file mxfdec.c.

Referenced by mxf_compute_index_tables().

static int mxf_compute_index_tables ( MXFContext *  mxf )

static

Sorts and collects index table segments into index tables.

Also computes PTSes if possible.

Definition at line 1495 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_is_intra_only ( MXFDescriptor *  descriptor )

static

Definition at line 1595 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

static int mxf_uid_to_str ( UID  uid, char **  str  )

static

Definition at line 1603 of file mxfdec.c.

static int mxf_umid_to_str ( UID  ul, UID  uid, char **  str  )

static

Definition at line 1621 of file mxfdec.c.

Referenced by mxf_add_umid_metadata().

static int mxf_add_umid_metadata ( AVDictionary **  pm, const char *  key, MXFPackage *  package  )

static

Definition at line 1642 of file mxfdec.c.

Referenced by mxf_add_metadata_stream(), mxf_parse_physical_source_package(), and mxf_parse_structural_metadata().

static int mxf_add_timecode_metadata ( AVDictionary **  pm, const char *  key, AVTimecode *  tc  )

static

Definition at line 1654 of file mxfdec.c.

Referenced by mxf_parse_physical_source_package(), and mxf_parse_structural_metadata().

static MXFTimecodeComponent* mxf_resolve_timecode_component ( MXFContext *  mxf, UID *  strong_ref  )

static

Definition at line 1662 of file mxfdec.c.

Referenced by mxf_parse_physical_source_package().

static MXFPackage* mxf_resolve_source_package ( MXFContext *  mxf, UID  package_uid  )

static

Definition at line 1683 of file mxfdec.c.

Referenced by mxf_parse_physical_source_package(), mxf_parse_structural_metadata(), and mxf_resolve_essence_group_choice().

static MXFDescriptor* mxf_resolve_multidescriptor ( MXFContext *  mxf, MXFDescriptor *  descriptor, int  track_id  )

static

Definition at line 1699 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

static MXFStructuralComponent* mxf_resolve_essence_group_choice ( MXFContext *  mxf, MXFEssenceGroup *  essence_group  )

static

Definition at line 1725 of file mxfdec.c.

Referenced by mxf_resolve_sourceclip().

static MXFStructuralComponent* mxf_resolve_sourceclip ( MXFContext *  mxf, UID *  strong_ref  )

static

Definition at line 1752 of file mxfdec.c.

Referenced by mxf_add_metadata_stream(), and mxf_parse_structural_metadata().

static int mxf_parse_package_comments ( MXFContext *  mxf, AVDictionary **  pm, MXFPackage *  package  )

static

Definition at line 1770 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

static int mxf_parse_physical_source_package ( MXFContext *  mxf, MXFTrack *  source_track, AVStream *  st  )

static

Definition at line 1792 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

static int mxf_add_metadata_stream ( MXFContext *  mxf, MXFTrack *  track  )

static

Definition at line 1862 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

static int mxf_parse_structural_metadata ( MXFContext *  mxf )

static

Definition at line 1900 of file mxfdec.c.

Referenced by mxf_read_header().

static int64_t mxf_timestamp_to_int64 ( uint64_t  timestamp )

static

Definition at line 2277 of file mxfdec.c.

static int mxf_read_identification_metadata ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  _uid, int64_t  klv_offset  )

static

Definition at line 2318 of file mxfdec.c.

static int mxf_read_preface_metadata ( void *  arg, AVIOContext *  pb, int  tag, int  size, UID  uid, int64_t  klv_offset  )

static

Definition at line 2355 of file mxfdec.c.

static int mxf_metadataset_init ( MXFMetadataSet *  ctx, enum MXFMetadataSetType  type  )

static

Definition at line 2407 of file mxfdec.c.

Referenced by mxf_read_local_tags().

static int mxf_read_local_tags ( MXFContext *  mxf, KLVPacket *  klv, MXFMetadataReadFunc *  read_child, int  ctx_size, enum MXFMetadataSetType  type  )

static

Definition at line 2421 of file mxfdec.c.

Referenced by mxf_parse_klv().

static int mxf_is_partition_pack_key ( UID  key )

static

Matches any partition pack key, in other words:

• HeaderPartition
• BodyPartition
• FooterPartition

  Returns

  non-zero if the key is a partition pack key, zero otherwise

Definition at line 2486 of file mxfdec.c.

Referenced by mxf_read_header(), and mxf_seek_to_previous_partition().

static int mxf_parse_klv ( MXFContext *  mxf, KLVPacket  klv, MXFMetadataReadFunc *  read, int  ctx_size, enum MXFMetadataSetType  type  )

static

Parses a metadata KLV.

Returns

<0 on error, 0 otherwise

Definition at line 2497 of file mxfdec.c.

Referenced by mxf_read_header(), and mxf_seek_to_previous_partition().

static int mxf_seek_to_previous_partition ( MXFContext *  mxf )

static

Seeks to the previous partition and parses it, if possible.

Returns

<= 0 if we should stop parsing, > 0 if we should keep going

Definition at line 2528 of file mxfdec.c.

Referenced by mxf_parse_handle_essence(), and mxf_parse_handle_partition_or_eof().

static int mxf_parse_handle_essence ( MXFContext *  mxf )

static

Called when essence is encountered.

Returns

<= 0 if we should stop parsing, > 0 if we should keep going

Definition at line 2579 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_parse_handle_partition_or_eof ( MXFContext *  mxf )

static

Called when the next partition or EOF is encountered.

Returns

<= 0 if we should stop parsing, > 0 if we should keep going

Definition at line 2622 of file mxfdec.c.

Referenced by mxf_read_header().

static void mxf_compute_essence_containers ( MXFContext *  mxf )

static

Figures out the proper offset and length of the essence container in each partition.

Definition at line 2630 of file mxfdec.c.

Referenced by mxf_read_header().

static int64_t round_to_kag ( int64_t  position, int  kag_size  )

static

Definition at line 2660 of file mxfdec.c.

Referenced by mxf_read_header().

static int is_pcm ( enum AVCodecID  codec_id )

static

Definition at line 2668 of file mxfdec.c.

Referenced by mxf_handle_missing_index_segment(), and mxf_handle_small_eubc().

static AVStream* mxf_get_opatom_stream ( MXFContext *  mxf )

static

Definition at line 2674 of file mxfdec.c.

Referenced by mxf_handle_missing_index_segment(), mxf_handle_small_eubc(), and mxf_read_packet().

static void mxf_handle_small_eubc ( AVFormatContext *  s )

static

Deal with the case where for some audio atoms EditUnitByteCount is very small (2, 4..).

In those cases we should read more than one sample per call to mxf_read_packet().

Definition at line 2694 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_handle_missing_index_segment ( MXFContext *  mxf )

static

Deal with the case where OPAtom files does not have any IndexTableSegments.

Definition at line 2722 of file mxfdec.c.

Referenced by mxf_read_header().

static void mxf_read_random_index_pack ( AVFormatContext *  s )

static

Definition at line 2777 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_read_header ( AVFormatContext *  s )

static

Definition at line 2828 of file mxfdec.c.

static int64_t mxf_set_current_edit_unit ( MXFContext *  mxf, int64_t  current_offset  )

static

Sets mxf->current_edit_unit based on what offset we're currently at.

Returns

next_ofs if OK, <0 on error

Definition at line 2966 of file mxfdec.c.

Referenced by mxf_read_packet_old().

static int mxf_compute_sample_count ( MXFContext *  mxf, int  stream_index, uint64_t *  sample_count  )

static

Definition at line 3003 of file mxfdec.c.

Referenced by mxf_read_seek().

static int mxf_set_audio_pts ( MXFContext *  mxf, AVCodecParameters *  par, AVPacket *  pkt  )

static

Definition at line 3044 of file mxfdec.c.

Referenced by mxf_read_packet(), and mxf_read_packet_old().

static int mxf_read_packet_old ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 3063 of file mxfdec.c.

Referenced by mxf_read_packet().

static int mxf_read_packet ( AVFormatContext *  s, AVPacket *  pkt  )

static

Definition at line 3164 of file mxfdec.c.

static int mxf_probe ( AVProbeData *  p )

static

Definition at line 3260 of file mxfdec.c.

static int mxf_read_seek ( AVFormatContext *  s, int  stream_index, int64_t  sample_time, int  flags  )

static

Definition at line 3287 of file mxfdec.c.

Variable Documentation

const uint8_t mxf_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 }

static

Definition at line 288 of file mxfdec.c.

Referenced by mxf_is_partition_pack_key(), mxf_probe(), and mxf_read_header().

const uint8_t mxf_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0d,0x01,0x03,0x01 }

static

Definition at line 289 of file mxfdec.c.

Referenced by mxf_decrypt_triplet(), mxf_get_stream_index(), mxf_read_header(), and mxf_read_packet_old().

const uint8_t mxf_avid_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 }

static

Definition at line 290 of file mxfdec.c.

Referenced by mxf_read_header(), and mxf_read_packet_old().

const uint8_t mxf_canopus_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x0a,0x0e,0x0f,0x03,0x01 }

static

Definition at line 291 of file mxfdec.c.

Referenced by mxf_read_packet_old().

const uint8_t mxf_system_item_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x03,0x01,0x04 }

static

Definition at line 292 of file mxfdec.c.

Referenced by mxf_read_header().

const uint8_t mxf_klv_key[] = { 0x06,0x0e,0x2b,0x34 }

static

Definition at line 293 of file mxfdec.c.

Referenced by klv_read_packet().

const uint8_t mxf_crypto_source_container_ul[] = { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0x09,0x06,0x01,0x01,0x02,0x02,0x00,0x00,0x00 }

static

Definition at line 295 of file mxfdec.c.

Referenced by mxf_read_cryptographic_context().

const uint8_t mxf_encrypted_triplet_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x04,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x7e,0x01,0x00 }

static

Definition at line 296 of file mxfdec.c.

Referenced by mxf_read_header(), and mxf_read_packet_old().

const uint8_t mxf_encrypted_essence_container[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0b,0x01,0x00 }

static

Definition at line 297 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

const uint8_t mxf_random_index_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x11,0x01,0x00 }

static

Definition at line 298 of file mxfdec.c.

Referenced by mxf_read_random_index_pack().

const uint8_t mxf_sony_mpeg4_extradata[] = { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0e,0x06,0x06,0x02,0x02,0x01,0x00,0x00 }

static

Definition at line 299 of file mxfdec.c.

Referenced by mxf_read_generic_descriptor().

const uint8_t mxf_avid_project_name[] = { 0xa5,0xfb,0x7b,0x25,0xf6,0x15,0x94,0xb9,0x62,0xfc,0x37,0x17,0x49,0x2d,0x42,0xbf }

static

Definition at line 300 of file mxfdec.c.

Referenced by mxf_read_preface_metadata().

const uint8_t mxf_jp2k_rsiz[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02,0x01,0x00 }

static

Definition at line 301 of file mxfdec.c.

Referenced by mxf_read_generic_descriptor().

const uint8_t mxf_indirect_value_utf16le[] = { 0x4c,0x00,0x02,0x10,0x01,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 }

static

Definition at line 302 of file mxfdec.c.

Referenced by mxf_read_indirect_value().

const uint8_t mxf_indirect_value_utf16be[] = { 0x42,0x01,0x10,0x02,0x00,0x00,0x00,0x00,0x00,0x06,0x0e,0x2b,0x34,0x01,0x04,0x01,0x01 }

static

Definition at line 303 of file mxfdec.c.

Referenced by mxf_read_indirect_value().

const MXFCodecUL mxf_picture_essence_container_uls[]

static

Initial value:

= {
    
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x0d,0x01,0x03,0x01,0x02,0x0c,0x01,0x00 }, 14,   AV_CODEC_ID_JPEG2000 },
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x10,0x60,0x01 }, 14,       AV_CODEC_ID_H264 }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x12,0x01,0x00 }, 14,        AV_CODEC_ID_VC1 }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x60,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x04,0x01 }, 14, AV_CODEC_ID_MPEG2VIDEO }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 14,    AV_CODEC_ID_DVVIDEO }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x05,0x00,0x00 }, 14,   AV_CODEC_ID_RAWVIDEO }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x0f,0x03,0x01,0x02,0x20,0x01,0x01 }, 15,     AV_CODEC_ID_HQ_HQA },
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0a,0x0e,0x0f,0x03,0x01,0x02,0x20,0x02,0x01 }, 15,        AV_CODEC_ID_HQX },
    { { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4f }, 14,   AV_CODEC_ID_RAWVIDEO }, 
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,      AV_CODEC_ID_NONE },
}

Definition at line 1155 of file mxfdec.c.

const MXFCodecUL mxf_intra_only_essence_container_uls[]

static

Initial value:

= {
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x00,0x00 }, 14, AV_CODEC_ID_MPEG2VIDEO }, 
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,       AV_CODEC_ID_NONE },
}

Definition at line 1171 of file mxfdec.c.

const MXFCodecUL mxf_intra_only_picture_essence_coding_uls[]

static

Initial value:

= {
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x00,0x00 }, 14,       AV_CODEC_ID_H264 }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x07,0x04,0x01,0x02,0x02,0x03,0x01,0x01,0x00 }, 14,   AV_CODEC_ID_JPEG2000 }, 
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,       AV_CODEC_ID_NONE },
}

Definition at line 1177 of file mxfdec.c.

const MXFCodecUL mxf_intra_only_picture_coded_width[]

static

Initial value:

= {
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x01 }, 16, 1440 },
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x02 }, 16, 1440 },
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x03 }, 16, 1440 },
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x0A,0x04,0x01,0x02,0x02,0x01,0x32,0x21,0x04 }, 16, 1440 },
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,    0 },
}

Definition at line 1184 of file mxfdec.c.

const MXFCodecUL mxf_sound_essence_container_uls[]

static

Initial value:

= {
    
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x06,0x01,0x00 }, 14, AV_CODEC_ID_PCM_S16LE }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x02,0x0d,0x01,0x03,0x01,0x02,0x04,0x40,0x01 }, 14,       AV_CODEC_ID_MP2 }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x01,0x0d,0x01,0x03,0x01,0x02,0x01,0x01,0x01 }, 14, AV_CODEC_ID_PCM_S16LE }, 
    { { 0x06,0x0e,0x2b,0x34,0x01,0x01,0x01,0xff,0x4b,0x46,0x41,0x41,0x00,0x0d,0x4d,0x4F }, 14, AV_CODEC_ID_PCM_S16LE }, 
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x03,0x04,0x02,0x02,0x02,0x03,0x03,0x01,0x00 }, 14,       AV_CODEC_ID_AAC }, 
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0,      AV_CODEC_ID_NONE },
}

Definition at line 1192 of file mxfdec.c.

const MXFCodecUL mxf_data_essence_container_uls[]

static

Initial value:

= {
    { { 0x06,0x0e,0x2b,0x34,0x04,0x01,0x01,0x09,0x0d,0x01,0x03,0x01,0x02,0x0e,0x00,0x00 }, 16, 0 },
    { { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 },  0, AV_CODEC_ID_NONE },
}

Definition at line 1202 of file mxfdec.c.

const char* const mxf_data_essence_descriptor[]

static

Initial value:

= {
    "vbi_vanc_smpte_436M",
}

Definition at line 1207 of file mxfdec.c.

const MXFMetadataReadTableEntry mxf_metadata_read_table[]

static

Definition at line 2368 of file mxfdec.c.

AVInputFormat ff_mxf_demuxer

Initial value:

= {
    .name           = "mxf",
    .long_name      = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
    .flags          = AVFMT_SEEK_TO_PTS,
    .priv_data_size = sizeof(MXFContext),
    .read_probe     = mxf_probe,
    .read_header    = mxf_read_header,
    .read_packet    = mxf_read_packet,
    .read_close     = mxf_read_close,
    .read_seek      = mxf_read_seek,
}

Definition at line 3371 of file mxfdec.c.