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mlpdec: Move MLP's filter_channel() to dsputils.

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Originally committed as revision 18721 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ramiro Polla 2009-04-30 12:30:05 +00:00
parent 52bcc8e13c
commit bf4f19dc65
5 changed files with 82 additions and 26 deletions
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4
libavcodec/Makefile
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@ -125,7 +125,7 @@ OBJS-$(CONFIG_MIMIC_DECODER) += mimic.o
OBJS-$(CONFIG_MJPEG_DECODER) += mjpegdec.o mjpeg.o
OBJS-$(CONFIG_MJPEG_ENCODER) += mjpegenc.o mjpeg.o mpegvideo_enc.o motion_est.o ratecontrol.o mpeg12data.o mpegvideo.o
OBJS-$(CONFIG_MJPEGB_DECODER) += mjpegbdec.o mjpegdec.o mjpeg.o
OBJS-$(CONFIG_MLP_DECODER) += mlpdec.o mlp_parser.o mlp.o
OBJS-$(CONFIG_MLP_DECODER) += mlpdec.o mlp_parser.o mlp.o mlpdsp.o
OBJS-$(CONFIG_MMVIDEO_DECODER) += mmvideo.o
OBJS-$(CONFIG_MOTIONPIXELS_DECODER) += motionpixels.o
OBJS-$(CONFIG_MP1_DECODER) += mpegaudiodec.o mpegaudiodecheader.o mpegaudio.o mpegaudiodata.o
@ -221,7 +221,7 @@ OBJS-$(CONFIG_THP_DECODER) += mjpegdec.o mjpeg.o
OBJS-$(CONFIG_TIERTEXSEQVIDEO_DECODER) += tiertexseqv.o
OBJS-$(CONFIG_TIFF_DECODER) += tiff.o lzw.o faxcompr.o
OBJS-$(CONFIG_TIFF_ENCODER) += tiffenc.o rle.o lzwenc.o
OBJS-$(CONFIG_TRUEHD_DECODER) += mlpdec.o mlp_parser.o mlp.o
OBJS-$(CONFIG_TRUEHD_DECODER) += mlpdec.o mlp_parser.o mlp.o mlpdsp.o
OBJS-$(CONFIG_TRUEMOTION1_DECODER) += truemotion1.o
OBJS-$(CONFIG_TRUEMOTION2_DECODER) += truemotion2.o
OBJS-$(CONFIG_TRUESPEECH_DECODER) += truespeech.o

8
libavcodec/dsputil.c
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@ -2754,6 +2754,10 @@ void ff_avg_cavs_qpel16_mc00_c(uint8_t *dst, uint8_t *src, int stride) {
}
#endif /* CONFIG_CAVS_DECODER */
#if CONFIG_MLP_DECODER || CONFIG_TRUEHD_DECODER
void ff_mlp_init(DSPContext* c, AVCodecContext *avctx);
#endif
#if CONFIG_VC1_DECODER || CONFIG_WMV3_DECODER
/* VC-1 specific */
void ff_vc1dsp_init(DSPContext* c, AVCodecContext *avctx);
@ -4542,6 +4546,10 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
#if CONFIG_CAVS_DECODER
ff_cavsdsp_init(c,avctx);
#endif
#if CONFIG_MLP_DECODER || CONFIG_TRUEHD_DECODER
ff_mlp_init(c, avctx);
#endif
#if CONFIG_VC1_DECODER || CONFIG_WMV3_DECODER
ff_vc1dsp_init(c,avctx);
#endif

6
libavcodec/dsputil.h
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@ -475,6 +475,12 @@ typedef struct DSPContext {
void (*shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height);
/* mlp/truehd functions */
void (*mlp_filter_channel)(int32_t *firbuf, const int32_t *fircoeff, int firorder,
int32_t *iirbuf, const int32_t *iircoeff, int iirorder,
unsigned int filter_shift, int32_t mask, int blocksize,
int32_t *sample_buffer);
/* vc1 functions */
void (*vc1_inv_trans_8x8)(DCTELEM *b);
void (*vc1_inv_trans_8x4)(uint8_t *dest, int line_size, DCTELEM *block);

34
libavcodec/mlpdec.c
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@ -27,6 +27,7 @@
#include <stdint.h>
#include "avcodec.h"
#include "dsputil.h"
#include "libavutil/intreadwrite.h"
#include "get_bits.h"
#include "libavutil/crc.h"
@ -144,6 +145,8 @@ typedef struct MLPDecodeContext {
int8_t noise_buffer[MAX_BLOCKSIZE_POW2];
int8_t bypassed_lsbs[MAX_BLOCKSIZE][MAX_CHANNELS];
int32_t sample_buffer[MAX_BLOCKSIZE][MAX_CHANNELS];
DSPContext dsp;
} MLPDecodeContext;
static VLC huff_vlc[3];
@ -231,6 +234,7 @@ static av_cold int mlp_decode_init(AVCodecContext *avctx)
m->avctx = avctx;
for (substr = 0; substr < MAX_SUBSTREAMS; substr++)
m->substream[substr].lossless_check_data = 0xffffffff;
dsputil_init(&m->dsp, avctx);
return 0;
}
@ -708,35 +712,17 @@ static void filter_channel(MLPDecodeContext *m, unsigned int substr,
FilterParams *iir = &m->channel_params[channel].filter_params[IIR];
unsigned int filter_shift = fir->shift;
int32_t mask = MSB_MASK(s->quant_step_size[channel]);
int i;
memcpy(firbuf, fir->state, MAX_FIR_ORDER * sizeof(int32_t));
memcpy(iirbuf, iir->state, MAX_IIR_ORDER * sizeof(int32_t));
for (i = 0; i < s->blocksize; i++) {
int32_t residual = m->sample_buffer[i + s->blockpos][channel];
unsigned int order;
int64_t accum = 0;
int32_t result;
m->dsp.mlp_filter_channel(firbuf, fir->coeff, fir->order,
iirbuf, iir->coeff, iir->order,
filter_shift, mask, s->blocksize,
&m->sample_buffer[s->blockpos][channel]);
/* TODO: Move this code to DSPContext? */
for (order = 0; order < fir->order; order++)
accum += (int64_t) firbuf[order] * fir->coeff[order];
for (order = 0; order < iir->order; order++)
accum += (int64_t) iirbuf[order] * iir->coeff[order];
accum = accum >> filter_shift;
result = (accum + residual) & mask;
*--firbuf = result;
*--iirbuf = result - accum;
m->sample_buffer[i + s->blockpos][channel] = result;
}
memcpy(fir->state, firbuf, MAX_FIR_ORDER * sizeof(int32_t));
memcpy(iir->state, iirbuf, MAX_IIR_ORDER * sizeof(int32_t));
memcpy(fir->state, firbuf - s->blocksize, MAX_FIR_ORDER * sizeof(int32_t));
memcpy(iir->state, iirbuf - s->blocksize, MAX_IIR_ORDER * sizeof(int32_t));
}
/** Read a block of PCM residual data (or actual if no filtering active). */

56
libavcodec/mlpdsp.c Normal file
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@ -0,0 +1,56 @@
/*
* 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"
static void ff_mlp_filter_channel(int32_t *firbuf, const int32_t *fircoeff, int firorder,
int32_t *iirbuf, const int32_t *iircoeff, int iirorder,
unsigned int filter_shift, int32_t mask, int blocksize,
int32_t *sample_buffer)
{
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 += 8;
}
}
void ff_mlp_init(DSPContext* c, AVCodecContext *avctx)
{
c->mlp_filter_channel = ff_mlp_filter_channel;
}