21 #include <speex/speex.h>
22 #include <speex/speex_header.h>
23 #include <speex/speex_stereo.h>
24 #include <speex/speex_callbacks.h>
42 const SpeexMode *mode;
43 SpeexHeader *header =
NULL;
48 header = speex_packet_to_header(avctx->
extradata,
54 avctx->
channels = header->nb_channels;
55 spx_mode = header->mode;
56 speex_header_free(header);
59 case 8000: spx_mode = 0;
break;
60 case 16000: spx_mode = 1;
break;
61 case 32000: spx_mode = 2;
break;
65 "Decoding as 32kHz ultra-wideband\n",
71 mode = speex_lib_get_mode(spx_mode);
82 "Decoding as stereo.\n", avctx->
channels);
88 speex_bits_init(&s->
bits);
96 SpeexCallback callback;
97 callback.callback_id = SPEEX_INBAND_STEREO;
98 callback.func = speex_std_stereo_request_handler;
99 callback.data = &s->
stereo;
100 s->
stereo = (SpeexStereoState)SPEEX_STEREO_STATE_INIT;
101 speex_decoder_ctl(s->
dec_state, SPEEX_SET_HANDLER, &callback);
108 int *got_frame_ptr,
AVPacket *avpkt)
111 int buf_size = avpkt->
size;
115 int ret, consumed = 0;
123 output = (int16_t *)frame->
data[0];
129 if (speex_bits_remaining(&s->
bits) < 5 ||
130 speex_bits_peek_unsigned(&s->
bits, 5) == 0xF) {
132 if (!buf || !buf_size) {
137 speex_bits_read_from(&s->
bits, buf, buf_size);
159 speex_bits_destroy(&s->
bits);
168 speex_bits_reset(&s->
bits);
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
AVCodec ff_libspeex_decoder
#define AV_LOG_WARNING
Something somehow does not look correct.
#define AV_CH_LAYOUT_STEREO
static int decode(MimicContext *ctx, int quality, int num_coeffs, int is_iframe)
enum AVSampleFormat sample_fmt
audio sample format
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static av_cold void libspeex_decode_flush(AVCodecContext *avctx)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_log(void *avcl, int level, const char *fmt,...)
const char * name
Name of the codec implementation.
uint64_t channel_layout
Audio channel layout.
audio channel layout utility functions
static av_cold int libspeex_decode_init(AVCodecContext *avctx)
if(ac->has_optimized_func)
Libavcodec external API header.
int sample_rate
samples per second
main external API structure.
static void close(AVCodecParserContext *s)
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static av_cold int libspeex_decode_close(AVCodecContext *avctx)
static int libspeex_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
#define CODEC_CAP_SUBFRAMES
Codec can output multiple frames per AVPacket Normally demuxers return one frame at a time...
common internal api header.
common internal and external API header
static av_cold void flush(AVCodecContext *avctx)
Flush (reset) the frame ID after seeking.
static av_cold int init(AVCodecParserContext *s)
int channels
number of audio channels
#define AV_CH_LAYOUT_MONO
This structure stores compressed data.
int nb_samples
number of audio samples (per channel) described by this frame