259 .extensions =
"vb,son",
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
int ffio_limit(AVIOContext *s, int size)
static int create_audio_stream(AVFormatContext *s, SIFFContext *c)
8 bits with AV_PIX_FMT_RGB32 palette
unsigned int avio_rb32(AVIOContext *s)
AVInputFormat ff_siff_demuxer
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AVERROR_EOF
End of file.
uint64_t channel_layout
Audio only.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
unsigned int avio_rl32(AVIOContext *s)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
enum AVMediaType codec_type
General type of the encoded data.
int flags
A combination of AV_PKT_FLAG values.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
static int siff_parse_soun(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
audio channel layout utility functions
static int siff_probe(const AVProbeData *p)
static int read_header(FFV1Context *f)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
static int siff_read_packet(AVFormatContext *s, AVPacket *pkt)
AVIOContext * pb
I/O context.
This structure contains the data a format has to probe a file.
int64_t duration
Decoding: duration of the stream, in stream time base.
static int siff_parse_vbv1(AVFormatContext *s, SIFFContext *c, AVIOContext *pb)
int sample_rate
Audio only.
unsigned int avio_rl16(AVIOContext *s)
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
int64_t nb_frames
number of frames in this stream if known or 0
void * priv_data
Format private data.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
static int siff_read_header(AVFormatContext *s)
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.