vp3_bfin.c
Go to the documentation of this file.
1 /*
2  * Copyright (C) 2007 Marc Hoffman <marc.hoffman@analog.com>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <string.h>
22 
23 #include "libavutil/attributes.h"
24 #include "libavcodec/avcodec.h"
25 #include "libavcodec/vp3dsp.h"
26 #include "libavcodec/dsputil.h"
27 #include "dsputil_bfin.h"
28 #include "vp3_bfin.h"
29 
30 /* Intra iDCT offset 128 */
31 static void bfin_vp3_idct_put(uint8_t *dest, int line_size, int16_t *block)
32 {
33  const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP + 128;
34  int i,j;
35 
36  ff_bfin_vp3_idct (block);
37 
38  for (i=0;i<8;i++)
39  for (j=0;j<8;j++)
40  dest[line_size*i + j] = cm[block[j*8 + i]];
41 
42  memset(block, 0, 128);
43 }
44 
45 /* Inter iDCT */
46 static void bfin_vp3_idct_add(uint8_t *dest, int line_size, int16_t *block)
47 {
48  const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
49  int i, j;
50 
51  ff_bfin_vp3_idct (block);
52  for (i = 0; i < 8; i++)
53  for (j = 0; j < 8; j++)
54  dest[line_size*i + j] = cm[dest[line_size*i + j] + block[j*8 + i]];
55 
56  memset(block, 0, 128);
57 }
58 
60 {
61  if (!(flags & CODEC_FLAG_BITEXACT)) {
64  }
65 }
#define ff_cropTbl
void ff_bfin_vp3_idct(int16_t *block)
#define MAX_NEG_CROP
Definition: dsputil.h:47
Macro definitions for various function/variable attributes.
void(* idct_add)(uint8_t *dest, int line_size, int16_t *block)
Definition: vp3dsp.h:42
av_cold void ff_vp3dsp_init_bfin(VP3DSPContext *c, int flags)
Definition: vp3_bfin.c:59
uint8_t
#define av_cold
Definition: attributes.h:78
#define CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
#define cm
Definition: dvbsubdec.c:34
external API header
static void bfin_vp3_idct_put(uint8_t *dest, int line_size, int16_t *block)
Definition: vp3_bfin.c:31
void(* idct_put)(uint8_t *dest, int line_size, int16_t *block)
Definition: vp3dsp.h:41
static void bfin_vp3_idct_add(uint8_t *dest, int line_size, int16_t *block)
Definition: vp3_bfin.c:46
dest
Definition: start.py:60
synthesis window for stochastic i
static int flags
Definition: cpu.c:23
static double c[64]
DSP utils.