34 #define FITS_BLOCK_SIZE 2880 46 if (!memcmp(b,
"SIMPLE = T", 30))
80 AVBPrint *avbuf, uint64_t *data_size)
82 int i,
ret, image = 0;
84 int64_t buf_size = 0,
size = 0, t;
110 if (header->
naxis > 1)
112 }
else if (header->
naxis) {
118 for (i = 1; i < header->
naxis; i++) {
160 while ((ret =
is_image(s, fits, &header, &avbuf, &size)) == 0) {
177 av_assert0(avbuf.len <= INT64_MAX && size <= INT64_MAX);
178 if (avbuf.len + size > INT_MAX - 80) {
195 memcpy(pkt->
data, buf + 80, avbuf.len - 80);
196 pkt->
size = avbuf.len - 80;
233 .priv_class = &fits_demuxer_class,
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define LIBAVUTIL_VERSION_INT
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
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.
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
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_assert0(cond)
assert() equivalent, that is always enabled.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
void av_bprint_append_data(AVBPrint *buf, const char *data, unsigned size)
Append data to a print buffer.
static const uint8_t header[24]
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
#define AV_BPRINT_SIZE_UNLIMITED
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
enum AVMediaType codec_type
General type of the encoded data.
simple assert() macros that are a bit more flexible than ISO C assert().
int flags
A combination of AV_PKT_FLAG values.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
int avpriv_fits_header_init(FITSHeader *header, FITSHeaderState state)
Initialize a single header line.
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
static int read_header(FFV1Context *f)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
AVIOContext * pb
I/O context.
int avpriv_fits_header_parse_line(void *avcl, FITSHeader *header, const uint8_t line[80], AVDictionary ***metadata)
Parse a single header line.
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
offset must point to AVRational
This structure contains the data a format has to probe a file.
void * priv_data
Format private data.
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.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...