SH4: fix compilation of memzero_align8()
[ffmpeg.git] / libavcodec / sh4 / dsputil_sh4.c
1 /*
2  *  sh4 dsputil
3  *
4  * Copyright (c) 2003 BERO <bero@geocities.co.jp>
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22
23 #include "libavcodec/avcodec.h"
24 #include "libavcodec/dsputil.h"
25
26 static void memzero_align8(void *dst,size_t size)
27 {
28 #if defined(__SH4__) || defined(__SH4_SINGLE__) || defined(__SH4_SINGLE_ONLY__)
29         __asm__(
30 #if defined(__SH4__)
31         " fschg\n"  //single float mode
32 #endif
33         " fldi0 fr0\n"
34         " fldi0 fr1\n"
35         " fschg\n"  // double
36         "1: \n" \
37         " dt %1\n"
38         " fmov  dr0,@-%0\n"
39         " fmov  dr0,@-%0\n"
40         " fmov  dr0,@-%0\n"
41         " bf.s 1b\n"
42         " fmov  dr0,@-%0\n"
43 #if defined(__SH4_SINGLE__) || defined(__SH4_SINGLE_ONLY__)
44         " fschg" //back to single
45 #endif
46         : : "r"((char*)dst+size),"r"(size/32): "memory" );
47 #else
48         double *d = dst;
49         size/=8*4;
50         do {
51                 d[0] = 0.0;
52                 d[1] = 0.0;
53                 d[2] = 0.0;
54                 d[3] = 0.0;
55                 d+=4;
56         } while(--size);
57 #endif
58 }
59
60 static void clear_blocks_sh4(DCTELEM *blocks)
61 {
62 //        if (((int)blocks&7)==0)
63         memzero_align8(blocks,sizeof(DCTELEM)*6*64);
64 }
65
66 extern void idct_sh4(DCTELEM *block);
67 static void idct_put(uint8_t *dest, int line_size, DCTELEM *block)
68 {
69         idct_sh4(block);
70         int i;
71         uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
72         for(i=0;i<8;i++) {
73                 dest[0] = cm[block[0]];
74                 dest[1] = cm[block[1]];
75                 dest[2] = cm[block[2]];
76                 dest[3] = cm[block[3]];
77                 dest[4] = cm[block[4]];
78                 dest[5] = cm[block[5]];
79                 dest[6] = cm[block[6]];
80                 dest[7] = cm[block[7]];
81                 dest+=line_size;
82                 block+=8;
83         }
84 }
85 static void idct_add(uint8_t *dest, int line_size, DCTELEM *block)
86 {
87         idct_sh4(block);
88         int i;
89         uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
90         for(i=0;i<8;i++) {
91                 dest[0] = cm[dest[0]+block[0]];
92                 dest[1] = cm[dest[1]+block[1]];
93                 dest[2] = cm[dest[2]+block[2]];
94                 dest[3] = cm[dest[3]+block[3]];
95                 dest[4] = cm[dest[4]+block[4]];
96                 dest[5] = cm[dest[5]+block[5]];
97                 dest[6] = cm[dest[6]+block[6]];
98                 dest[7] = cm[dest[7]+block[7]];
99                 dest+=line_size;
100                 block+=8;
101         }
102 }
103
104 extern void dsputil_init_align(DSPContext* c, AVCodecContext *avctx);
105
106 void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx)
107 {
108         const int idct_algo= avctx->idct_algo;
109         dsputil_init_align(c,avctx);
110
111         c->clear_blocks = clear_blocks_sh4;
112         if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_SH4){
113                 c->idct_put = idct_put;
114                 c->idct_add = idct_add;
115                c->idct     = idct_sh4;
116                 c->idct_permutation_type= FF_NO_IDCT_PERM; //FF_SIMPLE_IDCT_PERM; //FF_LIBMPEG2_IDCT_PERM;
117         }
118 }