22 #include "libavutil/intreadwrite.h"
51 uint32_t magic, nframes,
size, subversion, i;
52 uint32_t
width = 0,
height = 0, got_audio = 0, read = 0;
53 uint32_t sample_rate, channels, palette[256];
58 if (magic ==
MKBETAG(
'A',
'N',
'I',
'M')) {
63 if (size < 3 * 256 + 6)
74 for (i = 0; i < 256; i++)
78 }
else if (magic ==
MKBETAG(
'S',
'A',
'N',
'M')) {
102 while (!got_audio && ((read + 8) < size)) {
103 uint32_t sig, chunk_size;
112 case MKBETAG(
'W',
'a',
'v',
'e'):
125 case MKBETAG(
'B',
'l',
'1',
'6'):
126 case MKBETAG(
'A',
'N',
'N',
'O'):
169 for (i = 0; i < 256; i++)
210 case MKBETAG(
'F',
'R',
'M',
'E'):
219 case MKBETAG(
'B',
'l',
'1',
'6'):
227 case MKBETAG(
'W',
'a',
'v',
'e'):
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
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
#define MKBETAG(a, b, c, d)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
#define AVERROR_EOF
End of file.
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 av_free(void *ptr)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc(). ...
void * priv_data
Format private data.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
AVRational avg_frame_rate
Average framerate.
int flags
A combination of AV_PKT_FLAG values.
#define FF_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
int width
picture width / height.
void * av_malloc(size_t size) av_malloc_attrib 1(1)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
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)
This structure contains the data a format has to probe a file.
static av_always_inline AVRational av_inv_q(AVRational q)
Invert a rational.
#define MKTAG(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 stream time base.
static int smush_read_probe(AVProbeData *p)
int64_t nb_frames
number of frames in this stream if known or 0
int eof_reached
true if eof reached
int channels
number of audio channels
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
This structure stores compressed data.