28 #define RAW_SAMPLES 1024
57 #define PCMDEF(name_, long_name_, ext, codec) \
58 static const AVClass name_ ## _demuxer_class = { \
59 .class_name = #name_ " demuxer", \
60 .item_name = av_default_item_name, \
61 .option = pcm_options, \
62 .version = LIBAVUTIL_VERSION_INT, \
64 AVInputFormat ff_pcm_ ## name_ ## _demuxer = { \
66 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
67 .priv_data_size = sizeof(RawAudioDemuxerContext), \
68 .read_header = ff_raw_read_header, \
69 .read_packet = raw_read_packet, \
70 .read_seek = pcm_read_seek, \
71 .flags = AVFMT_GENERIC_INDEX, \
74 .priv_class = &name_ ## _demuxer_class, \
77 PCMDEF(f64be,
"PCM 64 bit floating-point big-endian format",
80 PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",
83 PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",
86 PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",
89 PCMDEF(s32be, "PCM
signed 32 bit big-endian format",
92 PCMDEF(s32le, "PCM
signed 32 bit little-endian format",
95 PCMDEF(s24be, "PCM
signed 24 bit big-endian format",
98 PCMDEF(s24le, "PCM
signed 24 bit little-endian format",
101 PCMDEF(s16be, "PCM
signed 16 bit big-endian format",
104 PCMDEF(s16le, "PCM
signed 16 bit little-endian format",
107 PCMDEF(s8, "PCM
signed 8 bit format",
110 PCMDEF(u32be, "PCM
unsigned 32 bit big-endian format",
113 PCMDEF(u32le, "PCM
unsigned 32 bit little-endian format",
116 PCMDEF(u24be, "PCM
unsigned 24 bit big-endian format",
119 PCMDEF(u24le, "PCM
unsigned 24 bit little-endian format",
122 PCMDEF(u16be, "PCM
unsigned 16 bit big-endian format",
125 PCMDEF(u16le, "PCM
unsigned 16 bit little-endian format",
128 PCMDEF(u8, "PCM
unsigned 8 bit format",
131 PCMDEF(alaw, "PCM
A-law format",
134 PCMDEF(mulaw, "PCM mu-law format",
#define PCMDEF(name_, long_name_, ext, codec)
int64_t pos
byte position in stream, -1 if unknown
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
int av_get_bits_per_sample(enum CodecID codec_id)
Return codec bits per sample.
AVCodecContext * codec
codec context
static const AVOption pcm_options[]
#define sw(reg, off, base)
int channels
number of audio channels
int64_t dts
Decompression timestamp in AVStream->time_base units; the time at which the packet is decompressed...
int64_t pts
Presentation timestamp in AVStream->time_base units; the time at which the decompressed packet will b...