77 #define HUFFMAN_TABLE_SIZE (64 * 1024)
118 if ((
w == 0) || (
w > 1024))
123 if ((
h == 0) || (
h > 1024))
128 if (
sample_rate && (sample_rate < 8000 || sample_rate > 48000))
168 if (
s->pb->eof_reached) {
176 if (sample_rate < 14 || sample_rate > INT_MAX) {
180 if (bytes_per_sample < 1 || bytes_per_sample > 2) {
228 if (bytes_per_sample == 1)
256 unsigned int chunk_size;
261 unsigned char r,
g,
b;
262 unsigned char palette_buffer[768];
263 uint32_t palette[256];
274 ret =
avio_read(pb, palette_buffer, 768);
277 }
else if (ret != 768) {
283 for (
i = 0;
i < 768;
i++)
284 if (palette_buffer[
i] > 63) {
289 for (
i = 0;
i < 256;
i++) {
290 r = palette_buffer[
i * 3 ] << palette_scale;
291 g = palette_buffer[
i * 3 + 1] << palette_scale;
292 b = palette_buffer[
i * 3 + 2] << palette_scale;
293 palette[
i] = (0xFFU << 24) | (
r << 16) | (
g << 8) | (
b);
294 if (palette_scale == 2)
295 palette[
i] |= palette[
i] >> 6 & 0x30303;
299 if (
s->pb->eof_reached) {
304 if (chunk_size < 4 || chunk_size > INT_MAX - 4) {
314 else if (ret != chunk_size) {
353 int64_t timestamp,
int flags)
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.
unsigned int avio_rl32(AVIOContext *s)
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
uint8_t * av_packet_new_side_data(AVPacket *pkt, enum AVPacketSideDataType type, buffer_size_t size)
#define flags(name, subs,...)
audio channel layout utility functions
static int read_header(FFV1Context *f)
#define AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_STEREO
#define AV_PKT_FLAG_KEY
The packet contains a keyframe.
@ AV_PKT_DATA_PALETTE
An AV_PKT_DATA_PALETTE side data packet contains exactly AVPALETTE_SIZE bytes worth of palette.
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 AVERROR_EOF
End of file.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
int av_image_check_size(unsigned int w, unsigned int h, int log_offset, void *log_ctx)
Check if the given dimension of an image is valid, meaning that all bytes of the image can be address...
#define HUFFMAN_TABLE_SIZE
static int idcin_read_seek(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
AVInputFormat ff_idcin_demuxer
static int idcin_read_header(AVFormatContext *s)
static int idcin_read_packet(AVFormatContext *s, AVPacket *pkt)
static int idcin_probe(const AVProbeData *p)
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static int read_seek(AVFormatContext *ctx, int stream_index, int64_t timestamp, int flags)
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.
int flags
A combination of AV_PKT_FLAG values.
int64_t duration
Duration of this packet in AVStream->time_base units, 0 if unknown.
This structure contains the data a format has to probe a file.
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.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int index
stream index in AVFormatContext
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base.
static int command(AVFilterContext *ctx, const char *cmd, const char *arg, char *res, int res_len, int flags)