22 #include "libavutil/intreadwrite.h"
50 uint32_t magic, nframes,
size, subversion, i;
51 uint32_t
width = 0,
height = 0, got_audio = 0, read = 0;
57 if (magic ==
MKBETAG(
'A',
'N',
'I',
'M')) {
62 if (size < 3 * 256 + 6)
71 for (i = 0; i < 256; i++)
75 }
else if (magic ==
MKBETAG(
'S',
'A',
'N',
'M') ) {
96 while (!got_audio && ((read + 8) < size)) {
97 uint32_t sig, chunk_size;
106 case MKBETAG(
'W',
'a',
'v',
'e'):
113 case MKBETAG(
'B',
'l',
'1',
'6'):
114 case MKBETAG(
'A',
'N',
'N',
'O'):
152 for (i = 0; i < 256; i++)
192 case MKBETAG(
'F',
'R',
'M',
'E'):
201 case MKBETAG(
'B',
'l',
'1',
'6'):
209 case MKBETAG(
'W',
'a',
'v',
'e'):
static int smush_read_packet(AVFormatContext *ctx, AVPacket *pkt)
AVCodecContext * codec
Codec context associated with this stream.
int index
stream index in AVFormatContext
void av_log(void *avcl, int level, const char *fmt,...) av_printf_format(3
Send the specified message to the log if the level is less than or equal to the current av_log_level...
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
AVInputFormat ff_smush_demuxer
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
int duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
void * priv_data
Format private data.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
int flags
A combination of AV_PKT_FLAG values.
int width
picture width / height.
static int read_header(FFV1Context *f)
enum AVMediaType codec_type
int sample_rate
samples per second
static int smush_read_header(AVFormatContext *ctx)
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
AVIOContext * pb
I/O context.
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
BYTE int const BYTE int int int height
#define MKTAG(a, b, c, d)
This structure contains the data a format has to probe a file.
#define MKBETAG(a, b, c, d)
int64_t duration
Decoding: duration of the stream, in stream time base.
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
static int smush_read_probe(AVProbeData *p)
int64_t nb_frames
number of frames in this stream if known or 0
#define AVERROR_INVALIDDATA
int channels
number of audio channels
This structure stores compressed data.