23 #define SUP_PGS_MAGIC 0x5047 73 unsigned char *buf = p->
buf;
77 for (nb_packets = 0; nb_packets < 10; nb_packets++) {
78 size_t full_packet_size;
79 if (buf_size < 10 + 3)
83 full_packet_size =
AV_RB16(buf + 10 + 1) + 10 + 3;
84 if (buf_size < full_packet_size)
86 buf += full_packet_size;
87 buf_size -= full_packet_size;
104 .mime_type =
"application/x-pgs",
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static int sup_probe(const AVProbeData *p)
int64_t pos
byte position in stream, -1 if unknown
AVInputFormat ff_sup_demuxer
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
unsigned int avio_rb16(AVIOContext *s)
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_WB24 unsigned int_TMPL AV_RB16
static int sup_read_header(AVFormatContext *s)
unsigned int avio_rb32(AVIOContext *s)
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AVERROR_EOF
End of file.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#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.
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.
AVIOContext * pb
I/O context.
This structure contains the data a format has to probe a file.
static int sup_read_packet(AVFormatContext *s, AVPacket *pkt)
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
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.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
#define AV_NOPTS_VALUE
Undefined timestamp value.