mirror of
https://git.videolan.org/git/ffmpeg.git
synced 2024-07-16 01:11:38 +02:00
d552f616a2
* qatar/master: (28 commits) Remove some non-compiling debug messages. ffplay: Fix non-compiling debug printf and replace it by av_dlog. H264: x86 predict init cosmetics. ac3enc: Fix linking of AC-3 encoder without the E-AC-3 encoder. Move E-AC-3 encoder functions to a separate eac3enc.c file. ac3enc: remove convenience macro, #define DEBUG ac3enc: remove unused #define vc1: re-initialize tables after width/height change. APIchanges: fill-in git commit hash for av_get_bytes_per_sample() addition samplefmt: add av_get_bytes_per_sample() iirfilter: fix biquad filter coefficients. swscale: remove duplicate conversion routine in swScale(). swscale: add yuv2planar/packed function typedefs. swscale: integrate yuv2nv12X_C into yuv2yuvX() function pointers. swscale: reindent x86 init code. swscale: extract SWS_FULL_CHR_H_INT conditional into init code. swscale: cosmetics. swscale: remove alp/chr/lumSrcOffset. swscale: un-special-case yuv2yuvX16_c(). shorten: Remove stray DEBUG #define and corresponding av_dlog statement. ... Conflicts: doc/APIchanges libavcodec/ac3enc.c libavutil/avutil.h libavutil/samplefmt.c libswscale/swscale.c libswscale/swscale_internal.h libswscale/x86/swscale_template.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
|
|
* 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 "dsputil.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_mlp_init(DSPContext* c, AVCodecContext *avctx)
|
|
{
|
|
c->mlp_filter_channel = ff_mlp_filter_channel;
|
|
if (ARCH_X86)
|
|
ff_mlp_init_x86(c, avctx);
|
|
}
|