Updated FFMPEG to version 1.1.2, using this project: http://sourceforge.net/projects/ffmpeg4android/
This commit is contained in:
64
project/jni/ffmpeg/libavcodec/mlpdsp.c
Normal file
64
project/jni/ffmpeg/libavcodec/mlpdsp.c
Normal file
@@ -0,0 +1,64 @@
|
||||
/*
|
||||
* Copyright (c) 2007-2008 Ian Caulfield
|
||||
* 2009 Ramiro Polla
|
||||
*
|
||||
* 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
|
||||
*/
|
||||
|
||||
#include "config.h"
|
||||
#include "mlpdsp.h"
|
||||
#include "mlp.h"
|
||||
|
||||
static void ff_mlp_filter_channel(int32_t *state, const int32_t *coeff,
|
||||
int firorder, int iirorder,
|
||||
unsigned int filter_shift, int32_t mask, int blocksize,
|
||||
int32_t *sample_buffer)
|
||||
{
|
||||
int32_t *firbuf = state;
|
||||
int32_t *iirbuf = state + MAX_BLOCKSIZE + MAX_FIR_ORDER;
|
||||
const int32_t *fircoeff = coeff;
|
||||
const int32_t *iircoeff = coeff + MAX_FIR_ORDER;
|
||||
int i;
|
||||
|
||||
for (i = 0; i < blocksize; i++) {
|
||||
int32_t residual = *sample_buffer;
|
||||
unsigned int order;
|
||||
int64_t accum = 0;
|
||||
int32_t result;
|
||||
|
||||
for (order = 0; order < firorder; order++)
|
||||
accum += (int64_t) firbuf[order] * fircoeff[order];
|
||||
for (order = 0; order < iirorder; order++)
|
||||
accum += (int64_t) iirbuf[order] * iircoeff[order];
|
||||
|
||||
accum = accum >> filter_shift;
|
||||
result = (accum + residual) & mask;
|
||||
|
||||
*--firbuf = result;
|
||||
*--iirbuf = result - accum;
|
||||
|
||||
*sample_buffer = result;
|
||||
sample_buffer += MAX_CHANNELS;
|
||||
}
|
||||
}
|
||||
|
||||
void ff_mlpdsp_init(MLPDSPContext *c)
|
||||
{
|
||||
c->mlp_filter_channel = ff_mlp_filter_channel;
|
||||
if (ARCH_X86)
|
||||
ff_mlpdsp_init_x86(c);
|
||||
}
|
||||
Reference in New Issue
Block a user