51 uint32_t magic, nframes,
size, subversion,
i;
52 uint32_t
width = 0,
height = 0, got_audio = 0, read = 0;
59 if (magic ==
MKBETAG(
'A',
'N',
'I',
'M')) {
64 if (
size < 3 * 256 + 6)
75 for (
i = 0;
i < 256;
i++)
79 }
else if (magic ==
MKBETAG(
'S',
'A',
'N',
'M')) {
103 while (!got_audio && ((read + 8) <
size)) {
104 uint32_t sig, chunk_size;
113 case MKBETAG(
'W',
'a',
'v',
'e'):
126 case MKBETAG(
'B',
'l',
'1',
'6'):
127 case MKBETAG(
'A',
'N',
'N',
'O'):
165 for (
i = 0;
i < 256;
i++)
206 case MKBETAG(
'F',
'R',
'M',
'E'):
215 case MKBETAG(
'B',
'l',
'1',
'6'):
223 case MKBETAG(
'W',
'a',
'v',
'e'):
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
unsigned int avio_rl16(AVIOContext *s)
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
unsigned int avio_rl32(AVIOContext *s)
unsigned int avio_rb24(AVIOContext *s)
unsigned int avio_rb32(AVIOContext *s)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
#define MKTAG(a, b, c, d)
#define MKBETAG(a, b, c, d)
static int read_header(FFV1Context *f)
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AVERROR_EOF
End of file.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
AVInputFormat ff_smush_demuxer
static int smush_read_probe(const AVProbeData *p)
static int smush_read_header(AVFormatContext *ctx)
static int smush_read_packet(AVFormatContext *ctx, AVPacket *pkt)
enum AVMediaType codec_type
General type of the encoded data.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int sample_rate
Audio only.
AVIOContext * pb
I/O context.
void * priv_data
Format private data.
This structure stores compressed data.
int flags
A combination of AV_PKT_FLAG values.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
This structure contains the data a format has to probe a file.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int64_t nb_frames
number of frames in this stream if known or 0
int64_t duration
Decoding: duration of the stream, in stream time base.
int index
stream index in AVFormatContext
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base.
AVRational avg_frame_rate
Average framerate.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented.