36 #define RoQ_MAGIC_NUMBER 0x1084
37 #define RoQ_CHUNK_PREAMBLE_SIZE 8
38 #define RoQ_AUDIO_SAMPLE_RATE 22050
39 #define RoQ_CHUNKS_TO_SCAN 30
41 #define RoQ_INFO 0x1001
42 #define RoQ_QUAD_CODEBOOK 0x1002
43 #define RoQ_QUAD_VQ 0x1011
44 #define RoQ_SOUND_MONO 0x1020
45 #define RoQ_SOUND_STEREO 0x1021
100 unsigned int chunk_size;
101 unsigned int chunk_type;
102 unsigned int codebook_size;
105 int64_t codebook_offset;
107 while (!packet_read) {
117 chunk_type =
AV_RL16(&preamble[0]);
118 chunk_size =
AV_RL32(&preamble[2]);
119 if(chunk_size > INT_MAX)
124 switch (chunk_type) {
152 codebook_size = chunk_size;
160 if (chunk_size > INT_MAX)
164 avio_seek(pb, codebook_offset, SEEK_SET);
168 if (ret != chunk_size)
226 if (ret != chunk_size) {
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
int ffio_limit(AVIOContext *s, int size)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
audio channel layout utility functions
static int read_header(FFV1Context *f)
#define AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_STEREO
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
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 AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVInputFormat ff_roq_demuxer
static int roq_read_header(AVFormatContext *s)
#define RoQ_QUAD_CODEBOOK
static int roq_read_packet(AVFormatContext *s, AVPacket *pkt)
#define RoQ_AUDIO_SAMPLE_RATE
static int roq_probe(const AVProbeData *p)
#define RoQ_CHUNK_PREAMBLE_SIZE
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
uint64_t channel_layout
Audio only.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
int64_t bit_rate
The average bitrate of the encoded data (in bits per second).
enum AVMediaType codec_type
General type of the encoded data.
int block_align
Audio only.
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int sample_rate
Audio only.
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
int64_t pos
byte position in stream, -1 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.
int index
stream index in AVFormatContext
unsigned int audio_frame_count