54 if (mime_type &&
s->iformat->mime_type) {
55 int rate = 0,
channels = 0, little_endian = 0;
61 sscanf(
options,
" rate=%d", &rate);
65 char val[
sizeof(
"little-endian")];
66 if (sscanf(
options,
" endianness=%13s",
val) == 1) {
67 little_endian = strcmp(
val,
"little-endian") == 0;
73 "Invalid sample_rate found in mime_type \"%s\"\n",
103 #define PCMDEF_0(name_, long_name_, ext, codec, ...)
104 #define PCMDEF_1(name_, long_name_, ext, codec, ...) \
105 static const AVClass name_ ## _demuxer_class = { \
106 .class_name = #name_ " demuxer", \
107 .item_name = av_default_item_name, \
108 .option = pcm_options, \
109 .version = LIBAVUTIL_VERSION_INT, \
111 AVInputFormat ff_pcm_ ## name_ ## _demuxer = { \
113 .long_name = NULL_IF_CONFIG_SMALL(long_name_), \
114 .priv_data_size = sizeof(PCMAudioDemuxerContext), \
115 .read_header = pcm_read_header, \
116 .read_packet = ff_pcm_read_packet, \
117 .read_seek = ff_pcm_read_seek, \
118 .flags = AVFMT_GENERIC_INDEX, \
120 .raw_codec_id = codec, \
121 .priv_class = &name_ ## _demuxer_class, \
124 #define PCMDEF_2(name, long_name, ext, codec, enabled, ...) \
125 PCMDEF_ ## enabled(name, long_name, ext, codec, __VA_ARGS__)
126 #define PCMDEF_3(name, long_name, ext, codec, config, ...) \
127 PCMDEF_2(name, long_name, ext, codec, config, __VA_ARGS__)
128 #define PCMDEF_EXT(name, long_name, ext, uppercase, ...) \
129 PCMDEF_3(name, long_name, ext, AV_CODEC_ID_PCM_ ## uppercase, \
130 CONFIG_PCM_ ## uppercase ## _DEMUXER, __VA_ARGS__)
131 #define PCMDEF(name, long_name, ext, uppercase) \
132 PCMDEF_EXT(name, long_name, ext, uppercase, )
134 PCMDEF(f64be,
"PCM 64-bit floating-point big-endian",
NULL, F64BE)
135 PCMDEF(f64le,
"PCM 64-bit floating-point little-endian",
NULL, F64LE)
136 PCMDEF(f32be,
"PCM 32-bit floating-point big-endian",
NULL, F32BE)
137 PCMDEF(f32le,
"PCM 32-bit floating-point little-endian",
NULL, F32LE)
138 PCMDEF(s32be,
"PCM signed 32-bit big-endian",
NULL, S32BE)
139 PCMDEF(s32le,
"PCM signed 32-bit little-endian",
NULL, S32LE)
140 PCMDEF(s24be,
"PCM signed 24-bit big-endian",
NULL, S24BE)
141 PCMDEF(s24le,
"PCM signed 24-bit little-endian",
NULL, S24LE)
142 PCMDEF_EXT(s16be,
"PCM signed 16-bit big-endian",
143 AV_NE(
"sw",
NULL), S16BE, .mime_type =
"audio/L16")
157 #if CONFIG_SLN_DEMUXER
158 static const AVOption sln_options[] = {
164 static const AVClass sln_demuxer_class = {
167 .option = sln_options,
181 .priv_class = &sln_demuxer_class,
static double val(void *priv, double ch)
simple assert() macros that are a bit more flexible than ISO C assert().
#define av_assert0(cond)
assert() equivalent, that is always enabled.
static int read_packet(void *opaque, uint8_t *buf, int buf_size)
static const uint32_t S8[256]
#define flags(name, subs,...)
#define bit(string, value)
const OptionDef options[]
static int read_header(FFV1Context *f)
#define AV_OPT_SEARCH_CHILDREN
Search in possible children of the given object first.
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
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.
const char * av_default_item_name(void *ptr)
Return the context name.
int av_stristart(const char *str, const char *pfx, const char **ptr)
Return non-zero if pfx is a prefix of str independent of case.
#define LIBAVUTIL_VERSION_INT
int av_opt_get(void *obj, const char *name, int search_flags, uint8_t **out_val)
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)
#define AV_OPT_FLAG_DECODING_PARAM
a generic parameter which can be set by the user for demuxing or decoding
#define PCMDEF(name, long_name, ext, uppercase)
static int pcm_read_header(AVFormatContext *s)
static const AVOption pcm_options[]
#define PCMDEF_EXT(name, long_name, ext, uppercase,...)
Describe the class of an AVClass context structure.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
This struct describes the properties of an encoded stream.
int bits_per_coded_sample
The number of bits per sample in the codedwords.
enum AVMediaType codec_type
General type of the encoded data.
int block_align
Audio only.
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
int sample_rate
Audio only.
AVCodecParameters * codecpar
Codec parameters associated with this stream.