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Data Structures | Macros | Typedefs | Enumerations | Functions | Variables
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/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  MXFTrack
 
struct  MXFDescriptor
 
struct  MXFIndexTableSegment
 
struct  MXFPackage
 
struct  MXFMetadataSet
 
struct  MXFIndexTable
 
struct  MXFContext
 
struct  MXFMetadataReadTableEntry
 

Macros

#define MXF_TFF   1
 
#define MXF_BFF   2
 
#define IS_KLV_KEY(x, y)   (!memcmp(x, y, sizeof(y)))
 
#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 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_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_utf16_string (AVIOContext *pb, int size, char **str)
 
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_match_uid (const UID key, const UID uid, int len)
 
static const MXFCodecULmxf_get_codec_ul (const MXFCodecUL *uls, UID *uid)
 
static voidmxf_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.
 
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.
 
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.
 
static int mxf_is_intra_only (MXFDescriptor *descriptor)
 
static int mxf_uid_to_str (UID uid, char **str)
 
static int mxf_add_uid_metadata (AVDictionary **pm, const char *key, UID uid)
 
static int mxf_add_timecode_metadata (AVDictionary **pm, const char *key, AVTimecode *tc)
 
static MXFTimecodeComponentmxf_resolve_timecode_component (MXFContext *mxf, UID *strong_ref)
 
static int mxf_parse_physical_source_package (MXFContext *mxf, MXFTrack *source_track, AVStream *st)
 
static int mxf_parse_structural_metadata (MXFContext *mxf)
 
static int mxf_timestamp_to_str (uint64_t timestamp, char **str)
 
static int mxf_read_identification_metadata (void *arg, AVIOContext *pb, int tag, int size, UID _uid, int64_t klv_offset)
 
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:
 
static int mxf_parse_klv (MXFContext *mxf, KLVPacket klv, MXFMetadataReadFunc *read, int ctx_size, enum MXFMetadataSetType type)
 Parses a metadata KLV.
 
static int mxf_seek_to_previous_partition (MXFContext *mxf)
 Seeks to the previous partition and parses it, if possible.
 
static int mxf_parse_handle_essence (MXFContext *mxf)
 Called when essence is encountered.
 
static int mxf_parse_handle_partition_or_eof (MXFContext *mxf)
 Called when the next partition or EOF is encountered.
 
static void mxf_compute_essence_containers (MXFContext *mxf)
 Figures out the proper offset and length of the essence container in each partition.
 
static int64_t round_to_kag (int64_t position, int kag_size)
 
static int is_pcm (enum AVCodecID codec_id)
 
static void mxf_handle_small_eubc (AVFormatContext *s)
 Deal with the case where for some audio atoms EditUnitByteCount is very small (2, 4..).
 
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.
 
static int mxf_compute_sample_count (MXFContext *mxf, int stream_index, uint64_t *sample_count)
 
static int mxf_set_audio_pts (MXFContext *mxf, AVCodecContext *codec, 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_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 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_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_TFF   1

Definition at line 159 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

#define MXF_BFF   2

Definition at line 160 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

#define IS_KLV_KEY (   x,
  y 
)    (!memcmp(x, y, sizeof(y)))
#define SET_STR_METADATA (   pb,
  name,
  str 
)
Value:
do { \
if ((ret = mxf_read_utf16_string(pb, size, &str)) < 0) \
return ret; \
av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
} while (0)

Definition at line 1904 of file mxfdec.c.

Referenced by mxf_read_identification_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 1910 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 = mxf_timestamp_to_str(var, &str)) < 0) \
return ret; \
av_dict_set(&s->metadata, name, str, AV_DICT_DONT_STRDUP_VAL); \
} while (0)

Definition at line 1917 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 250 of file mxfdec.c.

Enumeration Type Documentation

Enumerator:
Header 
BodyPartition 
Footer 

Definition at line 58 of file mxfdec.c.

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

Definition at line 64 of file mxfdec.c.

Enumerator:
Frame 
Clip 

Definition at line 244 of file mxfdec.c.

Function Documentation

static int mxf_read_close ( AVFormatContext s)
static

Definition at line 2721 of file mxfdec.c.

Referenced by mxf_read_header().

static int64_t klv_decode_ber_length ( AVIOContext pb)
static

Definition at line 276 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 291 of file mxfdec.c.

Referenced by klv_read_packet(), and mxf_read_header().

static int klv_read_packet ( KLVPacket klv,
AVIOContext pb 
)
static
static int mxf_get_stream_index ( AVFormatContext s,
KLVPacket klv 
)
static

Definition at line 315 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 330 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 358 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 421 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 447 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 607 of file mxfdec.c.

Referenced by 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 620 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 630 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 649 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 671 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 688 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 699 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 720 of file mxfdec.c.

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

Definition at line 745 of file mxfdec.c.

Referenced by mxf_read_package().

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

Definition at line 766 of file mxfdec.c.

static int mxf_read_index_entry_array ( AVIOContext pb,
MXFIndexTableSegment segment 
)
static

Definition at line 792 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 815 of file mxfdec.c.

static void mxf_read_pixel_layout ( AVIOContext pb,
MXFDescriptor descriptor 
)
static

Definition at line 852 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 872 of file mxfdec.c.

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

Definition at line 957 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 967 of file mxfdec.c.

Referenced by mxf_is_intra_only(), and mxf_parse_structural_metadata().

static void* mxf_resolve_strong_ref ( MXFContext mxf,
UID strong_ref,
enum MXFMetadataSetType  type 
)
static
static int mxf_get_sorted_table_segments ( MXFContext mxf,
int *  nb_sorted_segments,
MXFIndexTableSegment ***  sorted_segments 
)
static

Definition at line 1032 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 1100 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 1129 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 1150 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 1198 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 1303 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_is_intra_only ( MXFDescriptor descriptor)
static

Definition at line 1395 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

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

Definition at line 1403 of file mxfdec.c.

Referenced by mxf_add_uid_metadata().

static int mxf_add_uid_metadata ( AVDictionary **  pm,
const char *  key,
UID  uid 
)
static

Definition at line 1421 of file mxfdec.c.

Referenced by 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 1431 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 1439 of file mxfdec.c.

Referenced by mxf_parse_physical_source_package().

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

Definition at line 1460 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

static int mxf_parse_structural_metadata ( MXFContext mxf)
static

Definition at line 1532 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_timestamp_to_str ( uint64_t  timestamp,
char **  str 
)
static

Definition at line 1876 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 1924 of file mxfdec.c.

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

Definition at line 1998 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 2058 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 2069 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 2100 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 2151 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 2194 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 2202 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 2232 of file mxfdec.c.

Referenced by mxf_read_header().

static int is_pcm ( enum AVCodecID  codec_id)
static

Definition at line 2240 of file mxfdec.c.

Referenced by mxf_handle_small_eubc().

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 2251 of file mxfdec.c.

Referenced by mxf_read_header().

static void mxf_read_random_index_pack ( AVFormatContext s)
static

Definition at line 2276 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_read_header ( AVFormatContext s)
static

Definition at line 2327 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 2463 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 2500 of file mxfdec.c.

Referenced by mxf_read_seek().

static int mxf_set_audio_pts ( MXFContext mxf,
AVCodecContext codec,
AVPacket pkt 
)
static

Definition at line 2541 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 2560 of file mxfdec.c.

Referenced by mxf_read_packet().

static int mxf_read_packet ( AVFormatContext s,
AVPacket pkt 
)
static

Definition at line 2660 of file mxfdec.c.

static int mxf_probe ( AVProbeData p)
static

Definition at line 2776 of file mxfdec.c.

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

Definition at line 2803 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 262 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
const uint8_t mxf_avid_essence_element_key[] = { 0x06,0x0e,0x2b,0x34,0x01,0x02,0x01,0x01,0x0e,0x04,0x03,0x01 }
static

Definition at line 264 of file mxfdec.c.

Referenced by mxf_read_header(), and 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 265 of file mxfdec.c.

Referenced by mxf_read_header().

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

Definition at line 266 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 268 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 269 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 270 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 271 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 272 of file mxfdec.c.

Referenced by mxf_read_generic_descriptor().

const MXFCodecUL mxf_picture_essence_container_uls[]
static
Initial value:
= {
{ { 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,0x01,0x03,0x01,0x02,0x02,0x41,0x01 }, 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 },
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
}

Definition at line 992 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 1001 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 1007 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 1013 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 1023 of file mxfdec.c.

const char* const mxf_data_essence_descriptor[]
static
Initial value:
= {
"vbi_vanc_smpte_436M",
}

Definition at line 1028 of file mxfdec.c.

const MXFMetadataReadTableEntry mxf_metadata_read_table[]
static

Definition at line 1961 of file mxfdec.c.

AVInputFormat ff_mxf_demuxer
Initial value:
= {
.name = "mxf",
.long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
.priv_data_size = sizeof(MXFContext),
}

Definition at line 2872 of file mxfdec.c.