RepoMirrors
/
ffmpeg
mirror of https://git.ffmpeg.org/ffmpeg.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Split some SIPR structs to a header file for the upcoming SIPR16k commit 

Originally committed as revision 21232 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2010-01-16 03:40:25 +00:00
parent 06cb7a1c8f
commit 65323ed279
2 changed files with 84 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

54
libavcodec/sipr.c
View File

@ -37,28 +37,11 @@
#include "acelp_filters.h"
#include "celp_filters.h"
#define LSFQ_DIFF_MIN (0.0125 * M_PI)
#define LP_FILTER_ORDER 10
/** Number of past samples needed for excitation interpolation */
#define L_INTERPOL (LP_FILTER_ORDER + 1)
/** Subframe size for all modes except 16k */
#define SUBFR_SIZE 48
#define MAX_SUBFRAME_COUNT 5
#include "sipr.h"
#include "siprdata.h"
typedef enum {
MODE_16k,
MODE_8k5,
MODE_6k5,
MODE_5k0,
MODE_COUNT
} SiprMode;
typedef struct {
const char *mode_name;
uint16_t bits_per_frame;
@ -127,41 +110,6 @@ static const SiprModeParam modes[MODE_COUNT] = {
}
};
typedef struct {
AVCodecContext *avctx;
DSPContext dsp;
SiprMode mode;
float past_pitch_gain;
float lsf_history[LP_FILTER_ORDER];
float excitation[L_INTERPOL + PITCH_DELAY_MAX + 5*SUBFR_SIZE];
DECLARE_ALIGNED_16(float, synth_buf[LP_FILTER_ORDER + 5*SUBFR_SIZE + 6]);
float lsp_history[LP_FILTER_ORDER];
float gain_mem;
float energy_history[4];
float highpass_filt_mem[2];
float postfilter_mem[PITCH_DELAY_MAX + LP_FILTER_ORDER];
/* 5k0 */
float tilt_mem;
float postfilter_agc;
float postfilter_mem5k0[PITCH_DELAY_MAX + LP_FILTER_ORDER];
float postfilter_syn5k0[LP_FILTER_ORDER + SUBFR_SIZE*5];
} SiprContext;
typedef struct {
int vq_indexes[5];
int pitch_delay[5]; ///< pitch delay
int gp_index[5]; ///< adaptive-codebook gain indexes
int16_t fc_indexes[5][10]; ///< fixed-codebook indexes
int gc_index[5]; ///< fixed-codebook gain indexes
} SiprParameters;
static void dequant(float *out, const int *idx, const float *cbs[])
{
int i;

83
libavcodec/sipr.h Normal file
View File

@ -0,0 +1,83 @@
/*
* SIPR / ACELP.NET decoder
*
* Copyright (c) 2008 Vladimir Voroshilov
* Copyright (c) 2009 Vitor Sessak
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef AVCODEC_SIPR_H
#define AVCODEC_SIPR_H
#include "avcodec.h"
#include "dsputil.h"
#include "acelp_pitch_delay.h"
#define LSFQ_DIFF_MIN (0.0125 * M_PI)
#define LP_FILTER_ORDER 10
/** Number of past samples needed for excitation interpolation */
#define L_INTERPOL (LP_FILTER_ORDER + 1)
/** Subframe size for all modes except 16k */
#define SUBFR_SIZE 48
typedef enum {
MODE_16k,
MODE_8k5,
MODE_6k5,
MODE_5k0,
MODE_COUNT
} SiprMode;
typedef struct {
AVCodecContext *avctx;
DSPContext dsp;
SiprMode mode;
float past_pitch_gain;
float lsf_history[LP_FILTER_ORDER];
float excitation[L_INTERPOL + PITCH_DELAY_MAX + 5*SUBFR_SIZE];
DECLARE_ALIGNED_16(float, synth_buf[LP_FILTER_ORDER + 5*SUBFR_SIZE + 6]);
float lsp_history[LP_FILTER_ORDER];
float gain_mem;
float energy_history[4];
float highpass_filt_mem[2];
float postfilter_mem[PITCH_DELAY_MAX + LP_FILTER_ORDER];
/* 5k0 */
float tilt_mem;
float postfilter_agc;
float postfilter_mem5k0[PITCH_DELAY_MAX + LP_FILTER_ORDER];
float postfilter_syn5k0[LP_FILTER_ORDER + SUBFR_SIZE*5];
} SiprContext;
typedef struct {
int vq_indexes[5];
int pitch_delay[5]; ///< pitch delay
int gp_index[5]; ///< adaptive-codebook gain indexes
int16_t fc_indexes[5][10]; ///< fixed-codebook indexes
int gc_index[5]; ///< fixed-codebook gain indexes
} SiprParameters;
#endif /* AVCODEC_SIPR_H */