uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
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
enum AVMediaType codec_type
General type of the encoded data.
@ AV_CODEC_ID_INTERPLAY_ACM
AVStream * avformat_new_stream(AVFormatContext *s, const struct AVCodec *c)
Add a new stream to a media file.
int nb_channels
Number of channels in this layout.
int ff_get_extradata(void *logctx, AVCodecParameters *par, AVIOContext *pb, int size)
Allocate extradata with additional AV_INPUT_BUFFER_PADDING_SIZE at end which is always set to 0 and f...
int64_t duration
Decoding: duration of the stream, in stream time base.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
static int acm_probe(const AVProbeData *p)
enum AVStreamParseType need_parsing
AVCodecParameters * codecpar
Codec parameters associated with this stream.
const AVInputFormat ff_acm_demuxer
This structure contains the data a format has to probe a file.
AVChannelLayout ch_layout
Audio only.
int sample_rate
Audio only.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_WL16 uint64_t_TMPL AV_WB64 unsigned int_TMPL AV_RB32
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
static int acm_read_header(AVFormatContext *s)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base.