26 #include "libavutil/dict.h"
38 if (d[0] ==
'T' && d[1] ==
'T' && d[2] ==
'A' && d[3] ==
'1')
47 int i, channels,
bps, samplerate, datalen;
48 uint64_t framepos, start_offset;
61 if(samplerate <= 0 || samplerate > 1000000){
int av_add_index_entry(AVStream *st, int64_t pos, int64_t timestamp, int size, int distance, int flags)
Add an index entry into a sorted list.
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
AVCodecContext * codec
Codec context associated with this stream.
void ff_id3v1_read(AVFormatContext *s)
Read an ID3v1 tag.
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
AVIndexEntry * index_entries
Only used if the format does not support seeking natively.
#define AVERROR_EOF
End of file.
bitstream reader API header.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_index_search_timestamp(AVStream *st, int64_t timestamp, int flags)
Get the index for a specific timestamp.
void * priv_data
Format private data.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
AVStream ** streams
A list of all streams in the file.
static int read_header(FFV1Context *f)
enum AVMediaType codec_type
int sample_rate
samples per second
AVIOContext * pb
I/O context.
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
AVDictionary * metadata
Metadata that applies to the whole file.
This structure contains the data a format has to probe a file.
int64_t duration
Decoding: duration of the stream, in stream time base.
int64_t start_time
Decoding: pts of the first frame of the stream, in stream time base.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
int channels
number of audio channels
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
#define AV_DICT_IGNORE_SUFFIX
This structure stores compressed data.
void * av_mallocz(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...