sbcdec.c File Reference

SBC decoder implementation. More...

#include <stdbool.h>
#include "avcodec.h"
#include "internal.h"
#include "libavutil/intreadwrite.h"
#include "sbc.h"
#include "sbcdec_data.h"

Go to the source code of this file.

Data Structures
struct	sbc_decoder_state
struct	SBCDecContext

Functions
static int	sbc_unpack_frame (const uint8_t *data, struct sbc_frame *frame, size_t len)
static void	sbc_synthesize_four (struct sbc_decoder_state *state, struct sbc_frame *frame, int ch, int blk, AVFrame *output_frame)
static void	sbc_synthesize_eight (struct sbc_decoder_state *state, struct sbc_frame *frame, int ch, int blk, AVFrame *output_frame)
static void	sbc_synthesize_audio (struct sbc_decoder_state *state, struct sbc_frame *frame, AVFrame *output_frame)
static int	sbc_decode_init (AVCodecContext *avctx)
static int	sbc_decode_frame (AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)

Variables
AVCodec	ff_sbc_decoder

Detailed Description

SBC decoder implementation.

Definition in file sbcdec.c.

Function Documentation

sbc_unpack_frame()

static int sbc_unpack_frame ( const uint8_t *  data, struct sbc_frame *  frame, size_t  len  )

static

Definition at line 62 of file sbcdec.c.

Referenced by sbc_decode_frame().

sbc_synthesize_four()

static void sbc_synthesize_four ( struct sbc_decoder_state *  state, struct sbc_frame *  frame, int  ch, int  blk, AVFrame *  output_frame  )

inlinestatic

Definition at line 212 of file sbcdec.c.

Referenced by sbc_synthesize_audio().

sbc_synthesize_eight()

static void sbc_synthesize_eight ( struct sbc_decoder_state *  state, struct sbc_frame *  frame, int  ch, int  blk, AVFrame *  output_frame  )

inlinestatic

Definition at line 255 of file sbcdec.c.

Referenced by sbc_synthesize_audio().

sbc_synthesize_audio()

static void sbc_synthesize_audio ( struct sbc_decoder_state *  state, struct sbc_frame *  frame, AVFrame *  output_frame  )

static

Definition at line 302 of file sbcdec.c.

Referenced by sbc_decode_frame().

sbc_decode_init()

static int sbc_decode_init ( AVCodecContext *  avctx )

static

Definition at line 322 of file sbcdec.c.

sbc_decode_frame()

static int sbc_decode_frame ( AVCodecContext *  avctx, void *  data, int *  got_frame_ptr, AVPacket *  avpkt  )

static

Definition at line 336 of file sbcdec.c.

Variable Documentation

ff_sbc_decoder

AVCodec ff_sbc_decoder

Initial value:

= {
    .name                  = "sbc",
    .long_name             = NULL_IF_CONFIG_SMALL("SBC (low-complexity subband codec)"),
    .type                  = AVMEDIA_TYPE_AUDIO,
    .id                    = AV_CODEC_ID_SBC,
    .priv_data_size        = sizeof(SBCDecContext),
    .init                  = sbc_decode_init,
    .decode                = sbc_decode_frame,
    .capabilities          = AV_CODEC_CAP_DR1,
    .caps_internal         = FF_CODEC_CAP_INIT_THREADSAFE,
    .channel_layouts       = (const uint64_t[]) { AV_CH_LAYOUT_MONO,
                                                  AV_CH_LAYOUT_STEREO, 0},
    .sample_fmts           = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                             AV_SAMPLE_FMT_NONE },
    .supported_samplerates = (const int[]) { 16000, 32000, 44100, 48000, 0 },
}

Definition at line 364 of file sbcdec.c.