34 #define RoQ_MAGIC_NUMBER 0x1084
35 #define RoQ_CHUNK_PREAMBLE_SIZE 8
36 #define RoQ_AUDIO_SAMPLE_RATE 22050
37 #define RoQ_CHUNKS_TO_SCAN 30
39 #define RoQ_INFO 0x1001
40 #define RoQ_QUAD_CODEBOOK 0x1002
41 #define RoQ_QUAD_VQ 0x1011
42 #define RoQ_SOUND_MONO 0x1020
43 #define RoQ_SOUND_STEREO 0x1021
99 unsigned int chunk_size;
100 unsigned int chunk_type;
101 unsigned int codebook_size;
104 int64_t codebook_offset;
106 while (!packet_read) {
116 chunk_type =
AV_RL16(&preamble[0]);
117 chunk_size =
AV_RL32(&preamble[2]);
118 if(chunk_size > INT_MAX)
121 switch (chunk_type) {
149 codebook_size = chunk_size;
158 avio_seek(pb, codebook_offset, SEEK_SET);
162 if (ret != chunk_size)
212 if (ret != chunk_size)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
unsigned int audio_frame_count
int64_t pos
byte position in stream, -1 if unknown
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
static int roq_read_header(AVFormatContext *s, AVFormatParameters *ap)
int index
stream index in AVFormatContext
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
static int roq_probe(AVProbeData *p)
int ctx_flags
Format-specific flags, see AVFMTCTX_xx.
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
static int roq_read_packet(AVFormatContext *s, AVPacket *pkt)
static int read_header(FFV1Context *f)
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_log(void *avcl, int level, const char *fmt,...)
AVStream * avformat_new_stream(AVFormatContext *s, AVCodec *c)
Add a new stream to a media file.
AVCodecContext * codec
codec context
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
int bit_rate
the average bitrate
int width
picture width / height.
static av_always_inline int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
static int read_probe(AVProbeData *p)
enum AVMediaType codec_type
int sample_rate
samples per second
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
static int read_packet(AVFormatContext *ctx, AVPacket *pkt)
struct RoqDemuxContext RoqDemuxContext
#define RoQ_CHUNK_PREAMBLE_SIZE
#define RoQ_AUDIO_SAMPLE_RATE
This structure contains the data a format has to probe a file.
int eof_reached
true if eof reached
int channels
number of audio channels
void * priv_data
Format private data.
#define RoQ_QUAD_CODEBOOK
AVInputFormat ff_roq_demuxer
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...