35 #define FORM_TAG MKBETAG('F', 'O', 'R', 'M') 36 #define WVQA_TAG MKBETAG('W', 'V', 'Q', 'A') 37 #define VQHD_TAG MKBETAG('V', 'Q', 'H', 'D') 38 #define FINF_TAG MKBETAG('F', 'I', 'N', 'F') 39 #define SND0_TAG MKBETAG('S', 'N', 'D', '0') 40 #define SND1_TAG MKBETAG('S', 'N', 'D', '1') 41 #define SND2_TAG MKBETAG('S', 'N', 'D', '2') 42 #define VQFR_TAG MKBETAG('V', 'Q', 'F', 'R') 45 #define CINF_TAG MKBETAG('C', 'I', 'N', 'F') 46 #define CINH_TAG MKBETAG('C', 'I', 'N', 'H') 47 #define CIND_TAG MKBETAG('C', 'I', 'N', 'D') 48 #define PINF_TAG MKBETAG('P', 'I', 'N', 'F') 49 #define PINH_TAG MKBETAG('P', 'I', 'N', 'H') 50 #define PIND_TAG MKBETAG('P', 'I', 'N', 'D') 51 #define CMDS_TAG MKBETAG('C', 'M', 'D', 'S') 53 #define VQA_HEADER_SIZE 0x2A 54 #define VQA_PREAMBLE_SIZE 8 112 if (fps < 1 || fps > 30) {
121 wsvqa->
bps = header[27];
131 chunk_tag =
AV_RB32(&scratch[0]);
132 chunk_size =
AV_RB32(&scratch[4]);
170 chunk_type =
AV_RB32(&preamble[0]);
171 chunk_size =
AV_RB32(&preamble[4]);
173 skip_byte = chunk_size & 0x01;
182 switch (chunk_type) {
205 switch (chunk_type) {
207 if (wsvqa->
bps == 16)
225 switch (chunk_type) {
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int index
stream index in AVFormatContext
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
static int wsvqa_read_packet(AVFormatContext *s, AVPacket *pkt)
int ctx_flags
Flags signalling stream properties.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
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_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
#define av_fourcc2str(fourcc)
enum AVMediaType codec_type
General type of the encoded data.
int buf_size
Size of buf except extra allocated bytes.
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
static int read_header(FFV1Context *f)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
#define VQA_PREAMBLE_SIZE
#define AV_LOG_INFO
Standard information.
AVIOContext * pb
I/O context.
static int wsvqa_probe(AVProbeData *p)
AVInputFormat ff_wsvqa_demuxer
This structure contains the data a format has to probe a file.
static int wsvqa_read_header(AVFormatContext *s)
int64_t duration
Decoding: duration of the stream, in stream time base.
int sample_rate
Audio only.
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
int64_t nb_frames
number of frames in this stream if known or 0
void * priv_data
Format private data.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
This structure stores compressed data.