38 #define CHECK_LOOP(type) \ 39 if (ast->loop ## type > 0) { \ 40 ast->loop ## type = av_rescale_rnd(ast->loop ## type, par->sample_rate, 1000, AV_ROUND_DOWN); \ 41 if (ast->loop ## type < 0 || ast->loop ## type > UINT_MAX) { \ 42 av_log(s, AV_LOG_ERROR, "Invalid loop" #type " value\n"); \ 43 return AVERROR(EINVAL); \ 52 unsigned int codec_tag;
185 #define OFFSET(obj) offsetof(ASTMuxContext, obj) 209 .priv_class = &ast_muxer_class,
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
static int ast_write_packet(AVFormatContext *s, AVPacket *pkt)
void avio_wb64(AVIOContext *s, uint64_t val)
static const AVOption options[]
#define AV_LOG_WARNING
Something somehow does not look correct.
#define LIBAVUTIL_VERSION_INT
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
const char * av_default_item_name(void *ptr)
Return the context name.
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
This struct describes the properties of an encoded stream.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
void avio_wl32(AVIOContext *s, unsigned int val)
static av_cold int end(AVCodecContext *avctx)
AVOutputFormat ff_ast_muxer
AVStream ** streams
A list of all streams in the file.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static int ast_write_trailer(AVFormatContext *s)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
int block_align
Audio only.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
static int write_trailer(AVFormatContext *s1)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
AVIOContext * pb
I/O context.
Describe the class of an AVClass context structure.
void avio_wb16(AVIOContext *s, unsigned int val)
int sample_rate
Audio only.
static int ast_write_header(AVFormatContext *s)
int64_t nb_frames
number of frames in this stream if known or 0
const AVCodecTag ff_codec_ast_tags[]
void * priv_data
Format private data.
static void write_header(FFV1Context *f)
void avio_wb32(AVIOContext *s, unsigned int val)
AVCodecParameters * codecpar
Codec parameters associated with this stream.
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
This structure stores compressed data.
static const AVClass ast_muxer_class