47 6000, 8000, 9600, 11025, 12000, 16000, 22050, 24000,
48 32000, 44100, 48000, 64000, 88200, 96000, 192000, -1
114 rate_x = (flags &
WV_DSD) ? 4 : 1;
115 bpp = (flags &
WV_DSD) ? 0 : ((flags & 3) + 1) << 3;
118 rate =
wv_rates[(flags >> 23) & 0xF];
128 "Cannot determine additional parameters\n");
142 "Insufficient channel information\n");
161 chan |= (
avio_r8(pb) & 0xF) << 8;
167 chan |= (
avio_r8(pb) & 0xF) << 8;
173 "Invalid channel info size %d\n", size);
180 "Invalid DSD block\n");
183 rate_x = 1
U << (
avio_r8(pb) & 0x1f);
196 if (rate == -1 || rate * (uint64_t)rate_x >= INT_MAX) {
198 "Cannot determine custom sampling rate\n");
210 wc->
rate = rate * rate_x;
212 if (flags && bpp != wc->
bpp) {
214 "Bits per sample differ, this block: %i, header block: %i\n",
220 "Channels differ, this block: %i, header block: %i\n",
224 if (flags && rate != -1 && !(flags & WV_DSD) && rate * rate_x != wc->
rate) {
226 "Sampling rate differ, this block: %i, header block: %i\n",
227 rate * rate_x, wc->
rate);
285 uint32_t block_samples;
323 if (block_samples > INT32_MAX)
325 "Too many samples in block: %"PRIu32
"\n", block_samples);
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
uint8_t block_header[WV_HEADER_SIZE]
#define AV_LOG_WARNING
Something somehow does not look correct.
int64_t pos
byte position in stream, -1 if unknown
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
void ff_id3v1_read(AVFormatContext *s)
Read an ID3v1 tag.
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
static int wv_read_packet(AVFormatContext *s, AVPacket *pkt)
int64_t avio_skip(AVIOContext *s, int64_t offset)
Skip given number of bytes forward.
#define AV_CH_LAYOUT_STEREO
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_WL32 unsigned int_TMPL AV_WL24 unsigned int_TMPL AV_RL16
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.
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
#define AVERROR_EOF
End of file.
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
uint64_t channel_layout
Audio only.
int avio_read(AVIOContext *s, unsigned char *buf, int size)
Read size bytes from AVIOContext into buf.
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.
AVDictionary * metadata
Metadata that applies to the whole file.
AVInputFormat ff_wv_demuxer
unsigned int avio_rl32(AVIOContext *s)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
enum AVMediaType codec_type
General type of the encoded data.
int64_t ff_ape_parse_tag(AVFormatContext *s)
Read and parse an APE tag.
int avio_r8(AVIOContext *s)
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.
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
audio channel layout utility functions
static const int wv_rates[16]
int ff_wv_parse_header(WvHeader *wv, const uint8_t *data)
Parse a WavPack block header.
static int read_header(FFV1Context *f)
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
static int wv_probe(const AVProbeData *p)
AVIOContext * pb
I/O context.
This structure contains the data a format has to probe a file.
void avpriv_report_missing_feature(void *avc, const char *msg,...) av_printf_format(2
Log a generic warning message about a missing feature.
#define flags(name, subs,...)
int64_t duration
Decoding: duration of the stream, in stream time base.
int sample_rate
Audio only.
unsigned int avio_rl16(AVIOContext *s)
int64_t start_time
Decoding: pts of the first frame of the stream in presentation order, in stream time base...
static int wv_read_header(AVFormatContext *s)
int av_grow_packet(AVPacket *pkt, int grow_by)
Increase packet size, correctly zeroing padding.
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.
#define AV_DICT_IGNORE_SUFFIX
Return first entry in a dictionary whose first part corresponds to the search key, ignoring the suffix of the found key string.
AVCodecParameters * codecpar
Codec parameters associated with this stream.
int avio_feof(AVIOContext *s)
Similar to feof() but also returns nonzero on read errors.
unsigned int avio_rl24(AVIOContext *s)
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
static int wv_read_block_header(AVFormatContext *ctx, AVIOContext *pb)
#define AV_CH_LAYOUT_MONO
#define MKTAG(a, b, c, d)
uint64_t_TMPL AV_WL64 unsigned int_TMPL AV_RL32
This structure stores compressed data.
#define WV_FLAG_FINAL_BLOCK
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...