42 #define ID_8SVX MKTAG('8','S','V','X') 43 #define ID_16SV MKTAG('1','6','S','V') 44 #define ID_MAUD MKTAG('M','A','U','D') 45 #define ID_MHDR MKTAG('M','H','D','R') 46 #define ID_MDAT MKTAG('M','D','A','T') 47 #define ID_VHDR MKTAG('V','H','D','R') 48 #define ID_ATAK MKTAG('A','T','A','K') 49 #define ID_RLSE MKTAG('R','L','S','E') 50 #define ID_CHAN MKTAG('C','H','A','N') 51 #define ID_PBM MKTAG('P','B','M',' ') 52 #define ID_ILBM MKTAG('I','L','B','M') 53 #define ID_BMHD MKTAG('B','M','H','D') 54 #define ID_DGBL MKTAG('D','G','B','L') 55 #define ID_CAMG MKTAG('C','A','M','G') 56 #define ID_CMAP MKTAG('C','M','A','P') 57 #define ID_ACBM MKTAG('A','C','B','M') 58 #define ID_DEEP MKTAG('D','E','E','P') 59 #define ID_RGB8 MKTAG('R','G','B','8') 60 #define ID_RGBN MKTAG('R','G','B','N') 61 #define ID_DSD MKTAG('D','S','D',' ') 62 #define ID_DST MKTAG('D','S','T',' ') 63 #define ID_DSTC MKTAG('D','S','T','C') 64 #define ID_DSTF MKTAG('D','S','T','F') 65 #define ID_FRTE MKTAG('F','R','T','E') 66 #define ID_ANIM MKTAG('A','N','I','M') 67 #define ID_ANHD MKTAG('A','N','H','D') 68 #define ID_DLTA MKTAG('D','L','T','A') 69 #define ID_DPAN MKTAG('D','P','A','N') 71 #define ID_FORM MKTAG('F','O','R','M') 72 #define ID_FRM8 MKTAG('F','R','M','8') 73 #define ID_ANNO MKTAG('A','N','N','O') 74 #define ID_AUTH MKTAG('A','U','T','H') 75 #define ID_CHRS MKTAG('C','H','R','S') 76 #define ID_COPYRIGHT MKTAG('(','c',')',' ') 77 #define ID_CSET MKTAG('C','S','E','T') 78 #define ID_FVER MKTAG('F','V','E','R') 79 #define ID_NAME MKTAG('N','A','M','E') 80 #define ID_TEXT MKTAG('T','E','X','T') 81 #define ID_ABIT MKTAG('A','B','I','T') 82 #define ID_BODY MKTAG('B','O','D','Y') 83 #define ID_DBOD MKTAG('D','B','O','D') 84 #define ID_DPEL MKTAG('D','P','E','L') 85 #define ID_DLOC MKTAG('D','L','O','C') 86 #define ID_TVDC MKTAG('T','V','D','C') 100 #define IFF_EXTRA_VIDEO_SIZE 41 128 const char *
const tag,
129 const unsigned data_size)
136 if (
avio_read(s->
pb, buf, data_size) != data_size) {
172 #define DSD_SLFT MKTAG('S','L','F','T') 173 #define DSD_SRGT MKTAG('S','R','G','T') 174 #define DSD_MLFT MKTAG('M','L','F','T') 175 #define DSD_MRGT MKTAG('M','R','G','T') 176 #define DSD_C MKTAG('C',' ',' ',' ') 177 #define DSD_LS MKTAG('L','S',' ',' ') 178 #define DSD_RS MKTAG('R','S',' ',' ') 179 #define DSD_LFE MKTAG('L','F','E',' ') 203 "dsd_source_comment",
204 "analogue_source_comment",
205 "pcm_source_comment",
224 const char * metadata_tag =
NULL;
226 if (size >= INT64_MAX)
230 case MKTAG(
'D',
'I',
'A',
'R'): metadata_tag =
"artist";
break;
231 case MKTAG(
'D',
'I',
'T',
'I'): metadata_tag =
"title";
break;
234 if (metadata_tag && size > 4) {
253 int hour,
min, sec,
i,
ret, config;
262 if (size >= INT64_MAX)
266 case MKTAG(
'A',
'B',
'S',
'S'):
272 snprintf(abss,
sizeof(abss),
"%02dh:%02dm:%02ds:%d", hour, min, sec,
avio_rb32(pb));
276 case MKTAG(
'C',
'H',
'N',
'L'):
299 case MKTAG(
'C',
'M',
'P',
'R'):
311 case MKTAG(
'F',
'S',
' ',
' '):
317 case MKTAG(
'I',
'D',
'3',
' '):
318 id3v2_extra_meta =
NULL;
320 if (id3v2_extra_meta) {
335 case MKTAG(
'L',
'S',
'C',
'O'):
339 if (config != 0xFFFF) {
359 uint64_t chunk_pos, data_pos, data_size;
371 if (data_size < 1 || data_size >= INT64_MAX)
389 pkt->
pos = chunk_pos;
411 static const uint8_t deep_rgb24[] = {0, 0, 0, 3, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
412 static const uint8_t deep_rgba[] = {0, 0, 0, 4, 0, 1, 0, 8, 0, 2, 0, 8, 0, 3, 0, 8};
413 static const uint8_t deep_bgra[] = {0, 0, 0, 4, 0, 3, 0, 8, 0, 2, 0, 8, 0, 1, 0, 8};
414 static const uint8_t deep_argb[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 1, 0, 8, 0, 2, 0, 8};
415 static const uint8_t deep_abgr[] = {0, 0, 0, 4, 0,17, 0, 8, 0, 3, 0, 8, 0, 2, 0, 8};
425 uint32_t screenmode = 0, num, den;
452 const char *metadata_tag =
NULL;
458 if (data_size >= INT64_MAX)
469 if (data_size >= 16) {
532 if (data_size < 3 || data_size > 768 || data_size % 3) {
560 if (data_size >= 14) {
564 if (data_size >= 16) {
579 if (data_size < 4 || (data_size & 3))
581 if ((fmt_size =
avio_read(pb, fmt,
sizeof(fmt))) < 0)
619 if (data_size <
sizeof(iff->
tvdc))
627 case ID_TEXT: metadata_tag =
"comment";
break;
628 case ID_AUTH: metadata_tag =
"artist";
break;
630 case ID_NAME: metadata_tag =
"title";
break;
634 case MKTAG(
'F',
'V',
'E',
'R'):
638 av_log(s,
AV_LOG_DEBUG,
"DSIFF v%d.%d.%d.%d\n",version >> 24, (version >> 16) & 0xFF, (version >> 8) & 0xFF, version & 0xFF);
642 case MKTAG(
'D',
'I',
'I',
'N'):
648 case MKTAG(
'P',
'R',
'O',
'P'):
660 case MKTAG(
'C',
'O',
'M',
'T'):
664 for (i = 0; i < nb_comments; i++) {
675 snprintf(tmp,
sizeof(tmp),
"%04d-%02d-%02d %02d:%02d", year, mon, day, hour, min);
683 tag =
"channel_comment";
685 snprintf(tmp,
sizeof(tmp),
"channel%d_comment", ref);
705 if (metadata_size & 1)
712 if ((res =
get_metadata(s, metadata_tag, data_size)) < 0) {
774 if ((screenmode & 0x800 ) && iff->
bpp <= 8) {
775 iff->
ham = iff->
bpp > 6 ? 6 : 4;
778 iff->
flags = (screenmode & 0x80 ) && iff->
bpp <= 8;
791 bytestream_put_byte(&buf, iff->
bpp);
792 bytestream_put_byte(&buf, iff->
ham);
793 bytestream_put_byte(&buf, iff->
flags);
795 bytestream_put_byte(&buf, iff->
masking);
813 unsigned chunk = bytestream2_get_le32(&gb);
814 unsigned size = bytestream2_get_be32(&gb);
820 return bytestream2_get_be32(&gb);
854 uint64_t data_size, orig_pos;
855 uint32_t chunk_id, chunk_id2;
870 }
else if (chunk_id ==
ID_FORM &&
unsigned transparency
transparency color index in palette
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
unsigned ham
0 if non-HAM or number of hold bits (6 for bpp > 6, 4 otherwise)
packed RGB 8:8:8, 24bpp, RGBRGB...
int64_t pos
byte position in stream, -1 if unknown
#define avpriv_request_sample(...)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
AVRational sample_aspect_ratio
sample aspect ratio (0 if unknown)
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
unsigned maud_compression
static av_always_inline void bytestream2_init(GetByteContext *g, const uint8_t *buf, int buf_size)
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
#define AV_CH_LAYOUT_STEREO
unsigned int avio_rb16(AVIOContext *s)
svx8_compression_type svx8_compression
#define AV_CH_LAYOUT_5POINT0
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
uint8_t tvdc[32]
TVDC lookup table.
#define av_assert0(cond)
assert() equivalent, that is always enabled.
unsigned int avio_rb32(AVIOContext *s)
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
AVStream ** streams
A list of all streams in the file.
packed ABGR 8:8:8:8, 32bpp, ABGRABGR...
int ff_id3v2_parse_chapters(AVFormatContext *s, ID3v2ExtraMeta *extra_meta)
Create chapters for all CHAP tags found in the ID3v2 header.
#define AVERROR_EOF
End of file.
uint64_t avio_rb64(AVIOContext *s)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
uint64_t channel_layout
Audio only.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
static av_always_inline int bytestream2_get_bytes_left(GetByteContext *g)
#define AV_CH_LAYOUT_5POINT1
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
AVDictionary * metadata
Metadata that applies to the whole file.
unsigned int avio_rl32(AVIOContext *s)
static av_always_inline void bytestream2_skip(GetByteContext *g, unsigned int size)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
packed BGRA 8:8:8:8, 32bpp, BGRABGRA...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
#define av_fourcc2str(fourcc)
enum AVMediaType codec_type
General type of the encoded data.
void ff_id3v2_free_extra_meta(ID3v2ExtraMeta **extra_meta)
Free memory allocated parsing special (non-text) metadata.
simple assert() macros that are a bit more flexible than ISO C assert().
packed ARGB 8:8:8:8, 32bpp, ARGBARGB...
packed RGBA 8:8:8:8, 32bpp, RGBARGBA...
int flags
A combination of AV_PKT_FLAG values.
int extradata_size
Size of the extradata content in bytes.
int avio_r8(AVIOContext *s)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
unsigned flags
1 for EHB, 0 is no extra half darkening
int block_align
Audio only.
audio channel layout utility functions
#define AV_DICT_DONT_STRDUP_VAL
Take ownership of a value that's been allocated with av_malloc() or another memory allocation functio...
#define FF_ARRAY_ELEMS(a)
static int read_header(FFV1Context *f)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
unsigned bpp
bits per plane to decode (differs from bits_per_coded_sample if HAM)
AVIOContext * pb
I/O context.
int ff_id3v2_parse_apic(AVFormatContext *s, ID3v2ExtraMeta *extra_meta)
Create a stream for each APIC (attached picture) extracted from the ID3v2 header. ...
int av_dict_set(AVDictionary **pm, const char *key, const char *value, int flags)
Set the given entry in *pm, overwriting an existing entry.
This structure contains the data a format has to probe a file.
const uint32_t * dsd_layout
int64_t duration
Decoding: duration of the stream, in stream time base.
int sample_rate
Audio only.
unsigned bitmap_compression
delta compression method used
static int ref[MAX_W *MAX_W]
int is_64bit
chunk size is 64-bit
void ff_id3v2_read(AVFormatContext *s, const char *magic, ID3v2ExtraMeta **extra_meta, unsigned int max_search_size)
Read an ID3v2 tag, including supported extra metadata.
static av_always_inline void bytestream_put_buffer(uint8_t **b, const uint8_t *src, unsigned int size)
void * priv_data
Format private data.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.
unsigned masking
masking method used