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32 #define FITS_BLOCK_SIZE 2880
42 const uint8_t *
b = p->
buf;
43 if (!memcmp(
b,
"SIMPLE = T", 30))
78 int i,
ret, image = 0;
82 const uint8_t *buf, *buf_end;
93 while(!
ret && buf < buf_end) {
108 }
else if (
header->naxis) {
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
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.
AVStream * avformat_new_stream(AVFormatContext *s, const struct AVCodec *c)
Add a new stream to a media file.
@ AV_OPT_TYPE_VIDEO_RATE
Underlying C type is AVRational.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
int avpriv_fits_header_parse_line(void *avcl, FITSHeader *header, const uint8_t line[80], AVDictionary ***metadata)
Parse a single header line.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
@ AV_CLASS_CATEGORY_DEMUXER
AVCodecParameters * codecpar
Codec parameters associated with this stream.
#define LIBAVUTIL_VERSION_INT
static int read_header(FFV1Context *f)
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
const char * av_default_item_name(void *ptr)
Return the context name.
This structure contains the data a format has to probe a file.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static const uint8_t header[24]
int flags
A combination of AV_PKT_FLAG values.
int avpriv_fits_header_init(FITSHeader *header, FITSHeaderState state)
Initialize a single header line.
#define i(width, name, range_min, range_max)
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define AV_INPUT_BUFFER_PADDING_SIZE
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
#define AV_OPT_FLAG_DECODING_PARAM
A generic parameter which can be set by the user for demuxing or decoding.
static int read_probe(const AVProbeData *p)
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
This structure stores compressed data.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.