virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

avcodec/ttaenc: split off hybrid filter processing as ttaencdsp

Browse Source 
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2016-08-02 14:46:55 -03:00
parent 35e7fc6030
commit 7a9a8afc82
4 changed files with 94 additions and 33 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/Makefile
View File

@ -552,7 +552,7 @@ OBJS-$(CONFIG_TRUESPEECH_DECODER) += truespeech.o
OBJS-$(CONFIG_TSCC_DECODER) += tscc.o msrledec.o
OBJS-$(CONFIG_TSCC2_DECODER) += tscc2.o
OBJS-$(CONFIG_TTA_DECODER) += tta.o ttadata.o ttadsp.o
OBJS-$(CONFIG_TTA_ENCODER) += ttaenc.o ttadata.o
OBJS-$(CONFIG_TTA_ENCODER) += ttaenc.o ttaencdsp.o ttadata.o
OBJS-$(CONFIG_TWINVQ_DECODER) += twinvqdec.o twinvq.o
OBJS-$(CONFIG_TXD_DECODER) += txd.o
OBJS-$(CONFIG_ULTI_DECODER) += ulti.o

38
libavcodec/ttaenc.c
View File

@ -20,6 +20,7 @@
#define BITSTREAM_WRITER_LE
#include "ttadata.h"
#include "ttaencdsp.h"
#include "avcodec.h"
#include "put_bits.h"
#include "internal.h"
@ -29,6 +30,7 @@ typedef struct TTAEncContext {
const AVCRC *crc_table;
int bps;
TTAChannel *ch_ctx;
TTAEncDSPContext dsp;
} TTAEncContext;
static av_cold int tta_encode_init(AVCodecContext *avctx)
@ -57,40 +59,11 @@ static av_cold int tta_encode_init(AVCodecContext *avctx)
if (!s->ch_ctx)
return AVERROR(ENOMEM);
ff_ttaencdsp_init(&s->dsp);
return 0;
}
static inline void ttafilter_process(TTAFilter *c, int32_t *in)
{
register int32_t *dl = c->dl, *qm = c->qm, *dx = c->dx, sum = c->round;
if (c->error < 0) {
qm[0] -= dx[0]; qm[1] -= dx[1]; qm[2] -= dx[2]; qm[3] -= dx[3];
qm[4] -= dx[4]; qm[5] -= dx[5]; qm[6] -= dx[6]; qm[7] -= dx[7];
} else if (c->error > 0) {
qm[0] += dx[0]; qm[1] += dx[1]; qm[2] += dx[2]; qm[3] += dx[3];
qm[4] += dx[4]; qm[5] += dx[5]; qm[6] += dx[6]; qm[7] += dx[7];
}
sum += dl[0] * qm[0] + dl[1] * qm[1] + dl[2] * qm[2] + dl[3] * qm[3] +
dl[4] * qm[4] + dl[5] * qm[5] + dl[6] * qm[6] + dl[7] * qm[7];
dx[0] = dx[1]; dx[1] = dx[2]; dx[2] = dx[3]; dx[3] = dx[4];
dl[0] = dl[1]; dl[1] = dl[2]; dl[2] = dl[3]; dl[3] = dl[4];
dx[4] = ((dl[4] >> 30) | 1);
dx[5] = ((dl[5] >> 30) | 2) & ~1;
dx[6] = ((dl[6] >> 30) | 2) & ~1;
dx[7] = ((dl[7] >> 30) | 4) & ~3;
dl[4] = -dl[5]; dl[5] = -dl[6];
dl[6] = *in - dl[7]; dl[7] = *in;
dl[5] += dl[6]; dl[4] += dl[5];
*in -= (sum >> c->shift);
c->error = *in;
}
static int32_t get_sample(const AVFrame *frame, int sample,
enum AVSampleFormat format)
{
@ -155,7 +128,8 @@ pkt_alloc:
}
c->predictor = temp;
ttafilter_process(filter, &value);
s->dsp.filter_process(filter->qm, filter->dx, filter->dl, &filter->error, &value,
filter->shift, filter->round);
outval = (value > 0) ? (value << 1) - 1: -value << 1;
k = rice->k0;

55
libavcodec/ttaencdsp.c Normal file
View File

@ -0,0 +1,55 @@
/*
* 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 "libavutil/attributes.h"
#include "ttaencdsp.h"
static void ttaenc_filter_process_c(int32_t *qm, int32_t *dx, int32_t *dl,
int32_t *error, int32_t *in, int32_t shift,
int32_t round) {
if (*error < 0) {
qm[0] -= dx[0]; qm[1] -= dx[1]; qm[2] -= dx[2]; qm[3] -= dx[3];
qm[4] -= dx[4]; qm[5] -= dx[5]; qm[6] -= dx[6]; qm[7] -= dx[7];
} else if (*error > 0) {
qm[0] += dx[0]; qm[1] += dx[1]; qm[2] += dx[2]; qm[3] += dx[3];
qm[4] += dx[4]; qm[5] += dx[5]; qm[6] += dx[6]; qm[7] += dx[7];
}
round += dl[0] * qm[0] + dl[1] * qm[1] + dl[2] * qm[2] + dl[3] * qm[3] +
dl[4] * qm[4] + dl[5] * qm[5] + dl[6] * qm[6] + dl[7] * qm[7];
dx[0] = dx[1]; dx[1] = dx[2]; dx[2] = dx[3]; dx[3] = dx[4];
dl[0] = dl[1]; dl[1] = dl[2]; dl[2] = dl[3]; dl[3] = dl[4];
dx[4] = ((dl[4] >> 30) | 1);
dx[5] = ((dl[5] >> 30) | 2) & ~1;
dx[6] = ((dl[6] >> 30) | 2) & ~1;
dx[7] = ((dl[7] >> 30) | 4) & ~3;
dl[4] = -dl[5]; dl[5] = -dl[6];
dl[6] = *in - dl[7]; dl[7] = *in;
dl[5] += dl[6]; dl[4] += dl[5];
*in -= (round >> shift);
*error = *in;
}
av_cold void ff_ttaencdsp_init(TTAEncDSPContext *c)
{
c->filter_process = ttaenc_filter_process_c;
}

32
libavcodec/ttaencdsp.h Normal file
View File

@ -0,0 +1,32 @@
/*
* 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_TTAENCDSP_H
#define AVCODEC_TTAENCDSP_H
#include <stdint.h>
typedef struct TTAEncDSPContext {
void (*filter_process)(int32_t *qm, int32_t *dx, int32_t *dl,
int32_t *error, int32_t *in, int32_t shift,
int32_t round);
} TTAEncDSPContext;
void ff_ttaencdsp_init(TTAEncDSPContext *c);
#endif /* AVCODEC_TTAENCDSP_H */