Data Structures | Macros | Typedefs | Enumerations | Functions | Variables
mxfdec.c File Reference
#include "libavutil/aes.h"
#include "libavutil/avassert.h"
#include "libavutil/mathematics.h"
#include "libavcodec/bytestream.h"
#include "libavutil/timecode.h"
#include "avformat.h"
#include "internal.h"
#include "mxf.h"
Include dependency graph for mxfdec.c:

Go to the source code of this file.

Data Structures

struct  MXFPartition
 
struct  MXFCryptoContext
 
struct  MXFStructuralComponent
 
struct  MXFSequence
 
struct  MXFTimecodeComponent
 
struct  MXFTrack
 
struct  MXFDescriptor
 
struct  MXFIndexTableSegment
 
struct  MXFPackage
 
struct  MXFMetadataSet
 
struct  MXFIndexTable
 
struct  MXFContext
 
struct  MXFMetadataReadTableEntry
 

Macros

#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_material_package (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_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_source_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 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_add_timecode_metadata (AVDictionary **pm, const char *key, AVTimecode *tc)
 
static int mxf_parse_structural_metadata (MXFContext *mxf)
 
static int mxf_read_utf16_string (AVIOContext *pb, int size, char **str)
 
static int mxf_uid_to_str (UID uid, char **str)
 
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_seek_to_previous_partition (MXFContext *mxf)
 Seeks to the previous partition, 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 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_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, 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_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 MXFMetadataReadTableEntry mxf_metadata_read_table []
 
AVInputFormat ff_mxf_demuxer
 

Macro Definition Documentation

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

Definition at line 261 of file mxfdec.c.

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

#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)
name
const char * name
Definition: avisynth_c.h:675
s
const char * s
Definition: avisynth_c.h:668
if
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
size
int size
Definition: twinvq_data.h:11127
mxf_read_utf16_string
static int mxf_read_utf16_string(AVIOContext *pb, int size, char **str)
Definition: mxfdec.c:1622
AV_DICT_DONT_STRDUP_VAL
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that&#39;s been allocated with av_malloc() and chilren.
Definition: dict.h:72
ret
ret
Definition: avfilter.c:821
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:62
return
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame This method is called when a frame is wanted on an output For an it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return it should return
Definition: filter_design.txt:216

Definition at line 1683 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)
name
const char * name
Definition: avisynth_c.h:675
s
const char * s
Definition: avisynth_c.h:668
if
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
avio_rb64
uint64_t avio_rb64(AVIOContext *s)
Definition: aviobuf.c:675
mxf_timestamp_to_str
static int mxf_timestamp_to_str(uint64_t timestamp, char **str)
Definition: mxfdec.c:1661
AV_DICT_DONT_STRDUP_VAL
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that&#39;s been allocated with av_malloc() and chilren.
Definition: dict.h:72
ret
ret
Definition: avfilter.c:821
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:62
return
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame This method is called when a frame is wanted on an output For an it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return it should return
Definition: filter_design.txt:216

Definition at line 1696 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)
name
const char * name
Definition: avisynth_c.h:675
s
const char * s
Definition: avisynth_c.h:668
mxf_uid_to_str
static int mxf_uid_to_str(UID uid, char **str)
Definition: mxfdec.c:1643
if
initialize output if(nPeaks >3)%at least 3 peaks in spectrum for trying to find f0 nf0peaks
avio_read
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
Definition: aviobuf.c:478
AV_DICT_DONT_STRDUP_VAL
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that&#39;s been allocated with av_malloc() and chilren.
Definition: dict.h:72
ret
ret
Definition: avfilter.c:821
av_dict_set
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
Definition: dict.c:62
return
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame This method is called when a frame is wanted on an output For an it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return it should return
Definition: filter_design.txt:216

Definition at line 1689 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 238 of file mxfdec.c.

Enumeration Type Documentation

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

Definition at line 63 of file mxfdec.c.

enum MXFPartitionType
Enumerator
Header 
BodyPartition 
Footer 

Definition at line 57 of file mxfdec.c.

enum MXFWrappingScheme
Enumerator
Frame 
Clip 

Definition at line 232 of file mxfdec.c.

Function Documentation

static int is_pcm ( enum AVCodecID  codec_id)
static

Definition at line 1938 of file mxfdec.c.

Referenced by mxf_handle_small_eubc().

static int64_t klv_decode_ber_length ( AVIOContext *  pb)
static

Definition at line 263 of file mxfdec.c.

Referenced by klv_read_packet(), and mxf_decrypt_triplet().

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

Definition at line 291 of file mxfdec.c.

Referenced by mxf_read_header(), and mxf_read_packet_old().

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 1024 of file mxfdec.c.

Referenced by mxf_edit_unit_absolute_offset().

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

Definition at line 565 of file mxfdec.c.

Referenced by mxf_read_local_tags().

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

Definition at line 1321 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

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 1900 of file mxfdec.c.

Referenced by mxf_read_header().

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 1227 of file mxfdec.c.

Referenced by mxf_read_header().

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 1122 of file mxfdec.c.

Referenced by mxf_compute_index_tables().

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

Definition at line 2161 of file mxfdec.c.

Referenced by mxf_read_seek().

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

Definition at line 345 of file mxfdec.c.

Referenced by mxf_read_packet_old().

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 1074 of file mxfdec.c.

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

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 1053 of file mxfdec.c.

Referenced by mxf_read_packet().

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

Definition at line 902 of file mxfdec.c.

Referenced by mxf_is_intra_only(), and mxf_parse_structural_metadata().

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

Definition at line 317 of file mxfdec.c.

Referenced by mxf_read_packet_old().

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

Definition at line 956 of file mxfdec.c.

Referenced by mxf_compute_index_tables().

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

Definition at line 302 of file mxfdec.c.

Referenced by mxf_decrypt_triplet(), and mxf_read_packet_old().

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 1949 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_is_intra_only ( MXFDescriptor *  descriptor)
static

Definition at line 1313 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

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

Definition at line 892 of file mxfdec.c.

Referenced by mxf_get_codec_ul().

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 1851 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 1892 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_parse_structural_metadata ( MXFContext *  mxf)
static

Definition at line 1329 of file mxfdec.c.

Referenced by mxf_read_header().

static int mxf_probe ( AVProbeData *  p)
static

Definition at line 2419 of file mxfdec.c.

static int mxf_read_close ( AVFormatContext *  s)
static

Definition at line 2365 of file mxfdec.c.

Referenced by mxf_read_header().

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

Definition at line 589 of file mxfdec.c.

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

Definition at line 579 of file mxfdec.c.

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

Definition at line 807 of file mxfdec.c.

static int mxf_read_header ( AVFormatContext *  s)
static

Definition at line 1974 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 1703 of file mxfdec.c.

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

Definition at line 727 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 750 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 1773 of file mxfdec.c.

Referenced by mxf_read_header().

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

Definition at line 627 of file mxfdec.c.

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

Definition at line 2304 of file mxfdec.c.

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

Definition at line 2208 of file mxfdec.c.

Referenced by mxf_read_packet().

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

Definition at line 430 of file mxfdec.c.

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

Definition at line 787 of file mxfdec.c.

Referenced by mxf_read_generic_descriptor().

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

Definition at line 408 of file mxfdec.c.

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

Definition at line 2437 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 681 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 605 of file mxfdec.c.

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

Definition at line 703 of file mxfdec.c.

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

Definition at line 278 of file mxfdec.c.

Referenced by klv_read_packet(), and mxf_read_header().

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

Definition at line 643 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 660 of file mxfdec.c.

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

Definition at line 1622 of file mxfdec.c.

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

Definition at line 912 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

static int mxf_seek_to_previous_partition ( MXFContext *  mxf)
static

Seeks to the previous partition, if possible.

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

Definition at line 1830 of file mxfdec.c.

Referenced by mxf_parse_handle_essence(), and mxf_parse_handle_partition_or_eof().

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

Definition at line 2198 of file mxfdec.c.

Referenced by mxf_read_packet(), and mxf_read_packet_old().

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 2124 of file mxfdec.c.

Referenced by mxf_read_packet_old().

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

Definition at line 1661 of file mxfdec.c.

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

Definition at line 1643 of file mxfdec.c.

static int64_t round_to_kag ( int64_t  position,
int  kag_size 
)
static

Definition at line 1930 of file mxfdec.c.

Referenced by mxf_read_header().

Variable Documentation

AVInputFormat ff_mxf_demuxer
Initial value:
= {
.name = "mxf",
.long_name = NULL_IF_CONFIG_SMALL("MXF (Material eXchange Format)"),
.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,
}
MXFContext
struct MXFContext MXFContext
mxf_probe
static int mxf_probe(AVProbeData *p)
Definition: mxfdec.c:2419
read_seek
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
Definition: libcdio.c:153
mxf_read_seek
static int mxf_read_seek(AVFormatContext *s, int stream_index, int64_t sample_time, int flags)
Definition: mxfdec.c:2437
mxf_read_header
static int mxf_read_header(AVFormatContext *s)
Definition: mxfdec.c:1974
mxf_read_packet
static int mxf_read_packet(AVFormatContext *s, AVPacket *pkt)
Definition: mxfdec.c:2304
mxf_read_close
static int mxf_read_close(AVFormatContext *s)
Definition: mxfdec.c:2365
read_close
static av_cold int read_close(AVFormatContext *ctx)
Definition: libcdio.c:145
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: libavutil/internal.h:123
read_probe
static int read_probe(AVProbeData *pd)
Definition: libavformat/jvdec.c:54
read_header
static int read_header(FFV1Context *f)
Definition: ffv1dec.c:517
read_packet
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
Definition: libcdio.c:114

Definition at line 2504 of file mxfdec.c.

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

Definition at line 252 of file mxfdec.c.

Referenced by mxf_read_header(), and mxf_read_packet_old().

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 256 of file mxfdec.c.

Referenced by mxf_read_cryptographic_context().

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 258 of file mxfdec.c.

Referenced by mxf_parse_structural_metadata().

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 257 of file mxfdec.c.

Referenced by mxf_read_header(), and mxf_read_packet_old().

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

Definition at line 251 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_header_partition_pack_key[] = { 0x06,0x0e,0x2b,0x34,0x02,0x05,0x01,0x01,0x0d,0x01,0x02,0x01,0x01,0x02 }
static

Definition at line 250 of file mxfdec.c.

Referenced by mxf_probe(), and mxf_read_header().

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 },
}
AV_CODEC_ID_NONE
Definition: libavcodec/avcodec.h:100
AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: libavcodec/avcodec.h:104

Definition at line 936 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 },
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
}
AV_CODEC_ID_NONE
Definition: libavcodec/avcodec.h:100
AV_CODEC_ID_H264
Definition: libavcodec/avcodec.h:130

Definition at line 942 of file mxfdec.c.

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

Definition at line 254 of file mxfdec.c.

Referenced by klv_read_packet().

const MXFMetadataReadTableEntry mxf_metadata_read_table[]
static

Definition at line 1740 of file mxfdec.c.

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 },
}
AV_CODEC_ID_NONE
Definition: libavcodec/avcodec.h:100
AV_CODEC_ID_DVVIDEO
Definition: libavcodec/avcodec.h:127
AV_CODEC_ID_MPEG2VIDEO
preferred ID for MPEG-1/2 video decoding
Definition: libavcodec/avcodec.h:104
AV_CODEC_ID_RAWVIDEO
Definition: libavcodec/avcodec.h:116

Definition at line 927 of file mxfdec.c.

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 259 of file mxfdec.c.

Referenced by mxf_read_generic_descriptor().

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 },
{ { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 }, 0, AV_CODEC_ID_NONE },
}
AV_CODEC_ID_NONE
Definition: libavcodec/avcodec.h:100
AV_CODEC_ID_MP2
Definition: libavcodec/avcodec.h:381
AV_CODEC_ID_PCM_S16LE
Definition: libavcodec/avcodec.h:299

Definition at line 947 of file mxfdec.c.

const uint8_t mxf_system_item_key[] = { 0x06,0x0E,0x2B,0x34,0x02,0x05,0x01,0x01,0x0D,0x01,0x03,0x01,0x04 }
static

Definition at line 253 of file mxfdec.c.

Referenced by mxf_read_header().

Generated on Mon Nov 18 2024 06:52:08 for FFmpeg by   doxygen 1.8.11