mpc7.c File Reference

MPEG Audio Layer 1/2 -like codec with frames of 1152 samples divided into 32 subbands. More...

#include "libavutil/attributes.h"
#include "libavutil/channel_layout.h"
#include "libavutil/internal.h"
#include "libavutil/lfg.h"
#include "libavutil/mem.h"
#include "libavutil/mem_internal.h"
#include "libavutil/thread.h"
#include "avcodec.h"
#include "codec_internal.h"
#include "decode.h"
#include "get_bits.h"
#include "mpegaudiodsp.h"
#include "mpc.h"
#include "mpc7data.h"

Go to the source code of this file.

Functions
static av_cold void	mpc7_init_static (void)
static av_cold int	mpc7_decode_init (AVCodecContext *avctx)
static void	idx_to_quant (MPCContext *c, GetBitContext *gb, int idx, int *dst)
	Fill samples for given subband.
static int	get_scale_idx (GetBitContext *gb, int ref)
static int	mpc7_decode_frame (AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, AVPacket *avpkt)
static av_cold void	mpc7_decode_flush (AVCodecContext *avctx)
static av_cold int	mpc7_decode_close (AVCodecContext *avctx)

Variables
static VLCElem	scfi_vlc [1<< MPC7_SCFI_BITS]
static VLCElem	dscf_vlc [1<< MPC7_DSCF_BITS]
static VLCElem	hdr_vlc [1<< MPC7_HDR_BITS]
static const VLCElem *	quant_vlc [MPC7_QUANT_VLC_TABLES][2]
const FFCodec	ff_mpc7_decoder

Detailed Description

MPEG Audio Layer 1/2 -like codec with frames of 1152 samples divided into 32 subbands.

Definition in file mpc7.c.

Function Documentation

mpc7_init_static()

static av_cold void mpc7_init_static ( void )

static

Definition at line 50 of file mpc7.c.

Referenced by mpc7_decode_init().

mpc7_decode_init()

static av_cold int mpc7_decode_init ( AVCodecContext * avctx )

static

Definition at line 78 of file mpc7.c.

idx_to_quant()

static void idx_to_quant ( MPCContext * c, GetBitContext * gb, int idx, int * dst )

inlinestatic

Fill samples for given subband.

Definition at line 128 of file mpc7.c.

Referenced by mpc7_decode_frame().

get_scale_idx()

static int get_scale_idx ( GetBitContext * gb, int ref )

static

Definition at line 170 of file mpc7.c.

Referenced by mpc7_decode_frame().

mpc7_decode_frame()

static int mpc7_decode_frame ( AVCodecContext * avctx, AVFrame * frame, int * got_frame_ptr, AVPacket * avpkt )

static

Definition at line 178 of file mpc7.c.

mpc7_decode_flush()

static av_cold void mpc7_decode_flush ( AVCodecContext * avctx )

static

Definition at line 300 of file mpc7.c.

mpc7_decode_close()

static av_cold int mpc7_decode_close ( AVCodecContext * avctx )

static

Definition at line 308 of file mpc7.c.

Variable Documentation

scfi_vlc

VLCElem scfi_vlc[1<< MPC7_SCFI_BITS]

static

Definition at line 45 of file mpc7.c.

Referenced by mpc7_decode_frame(), mpc7_init_static(), mpc8_decode_frame(), and mpc8_init_static().

dscf_vlc

VLCElem dscf_vlc[1<< MPC7_DSCF_BITS]

static

Definition at line 46 of file mpc7.c.

Referenced by get_scale_idx(), mpc7_init_static(), mpc8_decode_frame(), and mpc8_init_static().

hdr_vlc

VLCElem hdr_vlc[1<< MPC7_HDR_BITS]

static

Definition at line 47 of file mpc7.c.

Referenced by mpc7_decode_frame(), and mpc7_init_static().

quant_vlc

const VLCElem* quant_vlc[MPC7_QUANT_VLC_TABLES][2]

static

Definition at line 48 of file mpc7.c.

Referenced by idx_to_quant(), mpc7_init_static(), mpc8_decode_frame(), and mpc8_init_static().

ff_mpc7_decoder

const FFCodec ff_mpc7_decoder

Initial value:

= {
    .p.name         = "mpc7",
    CODEC_LONG_NAME("Musepack SV7"),
    .p.type         = AVMEDIA_TYPE_AUDIO,
    .p.id           = AV_CODEC_ID_MUSEPACK7,
    .priv_data_size = sizeof(MPCContext),
    .init           = mpc7_decode_init,
    .close          = mpc7_decode_close,
    FF_CODEC_DECODE_CB(mpc7_decode_frame),
    .flush          = mpc7_decode_flush,
    .p.capabilities = AV_CODEC_CAP_DR1,
}

Definition at line 316 of file mpc7.c.