30 #include "libavutil/channel_layout.h"
31 #include "libavutil/intreadwrite.h"
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;
161 avio_seek(pb, codebook_offset, SEEK_SET);
165 if (ret != chunk_size)
222 if (ret != chunk_size)
unsigned int audio_frame_count
int64_t pos
byte position in stream, -1 if unknown
AVCodecContext * codec
Codec context associated with this stream.
int index
stream index in AVFormatContext
static int roq_probe(AVProbeData *p)
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...
#define AV_CH_LAYOUT_STEREO
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...
int ffio_limit(AVIOContext *s, int size)
unsigned char * buf
Buffer must have AVPROBE_PADDING_SIZE of extra allocated bytes filled with zero.
static int roq_read_packet(AVFormatContext *s, AVPacket *pkt)
int bits_per_coded_sample
bits per sample/pixel from the demuxer (needed for huffyuv).
AVStream * avformat_new_stream(AVFormatContext *s, const AVCodec *c)
Add a new stream to a media file.
int av_new_packet(AVPacket *pkt, int size)
Allocate the payload of a packet and initialize its fields with default values.
#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. ...
uint64_t channel_layout
Audio channel layout.
int bit_rate
the average bitrate
int width
picture width / height.
static int read_header(FFV1Context *f)
enum AVMediaType codec_type
int sample_rate
samples per second
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)
#define RoQ_CHUNK_PREAMBLE_SIZE
#define RoQ_AUDIO_SAMPLE_RATE
This structure contains the data a format has to probe a file.
#define AVERROR_INVALIDDATA
int channels
number of audio channels
#define RoQ_QUAD_CODEBOOK
#define AV_CH_LAYOUT_MONO
AVInputFormat ff_roq_demuxer
This structure stores compressed data.
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...
static int roq_read_header(AVFormatContext *s)