21 #include <speex/speex.h>
22 #include <speex/speex_header.h>
23 #include <speex/speex_stereo.h>
24 #include <speex/speex_callbacks.h>
43 const SpeexMode *
mode;
66 s->pktsize = ((
const int[]){5,10,15,20,20,28,28,38,38,46,62})[quality];
76 case 8000: spx_mode = 0;
break;
77 case 16000: spx_mode = 1;
break;
78 case 32000: spx_mode = 2;
break;
82 "Decoding as 32kHz ultra-wideband\n",
88 mode = speex_lib_get_mode(spx_mode);
93 s->frame_size = 160 << spx_mode;
100 "Decoding as stereo.\n", avctx->
channels);
106 speex_bits_init(&
s->bits);
107 s->dec_state = speex_decoder_init(
mode);
115 callback.callback_id = SPEEX_INBAND_STEREO;
116 callback.func = speex_std_stereo_request_handler;
118 s->stereo = (SpeexStereoState)SPEEX_STEREO_STATE_INIT;
119 speex_decoder_ctl(
s->dec_state, SPEEX_SET_HANDLER, &
callback);
126 int *got_frame_ptr,
AVPacket *avpkt)
129 int buf_size = avpkt->
size;
133 int ret, consumed = 0;
146 if (speex_bits_remaining(&
s->bits) < 5 ||
147 speex_bits_peek_unsigned(&
s->bits, 5) == 0xF) {
149 if (!buf || !buf_size) {
153 if (
s->pktsize && buf_size == 62)
154 buf_size =
s->pktsize;
156 speex_bits_read_from(&
s->bits, buf, buf_size);
157 consumed = avpkt->
size;
161 ret = speex_decode_int(
s->dec_state, &
s->bits, output);
167 speex_decode_stereo_int(output,
s->frame_size, &
s->stereo);
172 speex_decoder_ctl(
s->dec_state, SPEEX_GET_BITRATE, &avctx->
bit_rate);
180 speex_bits_destroy(&
s->bits);
181 speex_decoder_destroy(
s->dec_state);
189 speex_bits_reset(&
s->bits);
203 .wrapper_name =
"libspeex",
static void flush(AVCodecContext *avctx)
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
audio channel layout utility functions
common internal and external API header
#define MKTAG(a, b, c, d)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
static void callback(void *priv_data, int index, uint8_t *buf, int buf_size, int64_t time, enum dshowDeviceType devtype)
mode
Use these values in ebur128_init (or'ed).
#define AV_CH_LAYOUT_MONO
#define AV_CH_LAYOUT_STEREO
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#define AV_CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time,...
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
@ AV_SAMPLE_FMT_S16
signed 16 bits
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
static av_cold int libspeex_decode_close(AVCodecContext *avctx)
static int libspeex_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
static av_cold void libspeex_decode_flush(AVCodecContext *avctx)
AVCodec ff_libspeex_decoder
static av_cold int libspeex_decode_init(AVCodecContext *avctx)
static const uint8_t header[24]
main external API structure.
enum AVSampleFormat sample_fmt
audio sample format
unsigned int codec_tag
fourcc (LSB first, so "ABCD" -> ('D'<<24) + ('C'<<16) + ('B'<<8) + 'A').
int64_t bit_rate
the average bitrate
int sample_rate
samples per second
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
int channels
number of audio channels
uint64_t channel_layout
Audio channel layout.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
int nb_samples
number of audio samples (per channel) described by this frame
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
This structure stores compressed data.