28 #define LOAS_SYNC_WORD 0x2b7 32 int max_frames = 0, first_frames = 0;
40 for (; buf <
end; buf = buf2 + 1) {
43 for (frames = 0; buf2 <
end; frames++) {
47 fsize = (header & 0x1FFF) + 3;
50 fsize =
FFMIN(fsize, end - buf2);
53 max_frames =
FFMAX(max_frames, frames);
58 if (first_frames >= 3)
60 else if (max_frames > 100)
62 else if (max_frames >= 3)
96 .priv_class = &loas_demuxer_class,
static int loas_read_header(AVFormatContext *s)
static int loas_probe(const AVProbeData *p)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
if it could not because there are no more frames
static av_cold int end(AVCodecContext *avctx)
enum AVStreamParseType need_parsing
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
static const uint8_t header[24]
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
ff_const59 struct AVInputFormat * iformat
The input container format.
enum AVMediaType codec_type
General type of the encoded data.
#define FF_RAW_DEMUXER_CLASS(name)
int buf_size
Size of buf except extra allocated bytes.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
common internal API header
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_WB32 unsigned int_TMPL AV_RB24
This structure contains the data a format has to probe a file.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
static int64_t fsize(FILE *f)
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
AVInputFormat ff_loas_demuxer