74 int16_t *samples = (int16_t*)
frame->
data[0];
83 energy += samples[
i] * samples[
i];
87 double dbov = 10 * log10(energy / 1081109975);
93 avpkt->
data[0] = qdbov;
104 .
name =
"comfortnoise",
static enum AVSampleFormat sample_fmts[]
#define av_assert1(cond)
assert() equivalent, that does not lie in speed critical code.
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
AVCodec ff_comfortnoise_encoder
static av_cold int cng_encode_init(AVCodecContext *avctx)
static int cng_encode_frame(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
static av_cold int cng_encode_close(AVCodecContext *avctx)
common internal and external API header
static __device__ float floor(float a)
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
@ AV_CODEC_ID_COMFORT_NOISE
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVSampleFormat
Audio sample formats.
@ AV_SAMPLE_FMT_S16
signed 16 bits
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
av_cold void ff_lpc_end(LPCContext *s)
Uninitialize LPCContext.
int ff_lpc_calc_ref_coefs(LPCContext *s, const int32_t *samples, int order, double *ref)
av_cold int ff_lpc_init(LPCContext *s, int blocksize, int max_order, enum FFLPCType lpc_type)
Initialize LPCContext.
@ FF_LPC_TYPE_LEVINSON
Levinson-Durbin recursion.
main external API structure.
int channels
number of audio channels
int frame_size
Number of samples per channel in an audio frame.
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.
#define av_malloc_array(a, b)