sbcdec.c File Reference

#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"
#include "libavutil/channel_layout.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/mem_internal.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, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt)

Variables
const FFCodec	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 64 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 214 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 257 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 304 of file sbcdec.c.

Referenced by sbc_decode_frame().

sbc_decode_init()

static int sbc_decode_init ( AVCodecContext *  avctx )

static

Definition at line 324 of file sbcdec.c.

sbc_decode_frame()

static int sbc_decode_frame ( AVCodecContext *  avctx, AVFrame *  frame, int *  got_frame_ptr, AVPacket *  avpkt  )

static

Definition at line 340 of file sbcdec.c.

Variable Documentation

ff_sbc_decoder

const FFCodec ff_sbc_decoder

Initial value:

= {
    .p.name                = "sbc",
    CODEC_LONG_NAME("SBC (low-complexity subband codec)"),
    .p.type                = AVMEDIA_TYPE_AUDIO,
    .p.id                  = AV_CODEC_ID_SBC,
    .priv_data_size        = sizeof(SBCDecContext),
    .init                  = sbc_decode_init,
    FF_CODEC_DECODE_CB(sbc_decode_frame),
    .p.capabilities        = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,
    .p.ch_layouts          = (const AVChannelLayout[]) { AV_CHANNEL_LAYOUT_MONO,
                                                         AV_CHANNEL_LAYOUT_STEREO,
                                                         { 0 } },
    .p.sample_fmts         = (const enum AVSampleFormat[]) { AV_SAMPLE_FMT_S16P,
                                                             AV_SAMPLE_FMT_NONE },
    .p.supported_samplerates = (const int[]) { 16000, 32000, 44100, 48000, 0 },
}

Definition at line 365 of file sbcdec.c.