Convert asm keyword into __asm__.
[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         (char*)dst+=size;
30         size/=8*4;
31         __asm__(
32 #if defined(__SH4__)
33         " fschg\n"  //single float mode
34 #endif
35         " fldi0 fr0\n"
36         " fldi0 fr1\n"
37         " fschg\n"  // double
38         "1: \n" \
39         " dt %1\n"
40         " fmov  dr0,@-%0\n"
41         " fmov  dr0,@-%0\n"
42         " fmov  dr0,@-%0\n"
43         " bf.s 1b\n"
44         " fmov  dr0,@-%0\n"
45 #if defined(__SH4_SINGLE__) || defined(__SH4_SINGLE_ONLY__)
46         " fschg" //back to single
47 #endif
48         : : "r"(dst),"r"(size): "memory" );
49 #else
50         double *d = dst;
51         size/=8*4;
52         do {
53                 d[0] = 0.0;
54                 d[1] = 0.0;
55                 d[2] = 0.0;
56                 d[3] = 0.0;
57                 d+=4;
58         } while(--size);
59 #endif
60 }
61
62 static void clear_blocks_sh4(DCTELEM *blocks)
63 {
64 //        if (((int)blocks&7)==0)
65         memzero_align8(blocks,sizeof(DCTELEM)*6*64);
66 }
67
68 extern void idct_sh4(DCTELEM *block);
69 static void idct_put(uint8_t *dest, int line_size, DCTELEM *block)
70 {
71         idct_sh4(block);
72         int i;
73         uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
74         for(i=0;i<8;i++) {
75                 dest[0] = cm[block[0]];
76                 dest[1] = cm[block[1]];
77                 dest[2] = cm[block[2]];
78                 dest[3] = cm[block[3]];
79                 dest[4] = cm[block[4]];
80                 dest[5] = cm[block[5]];
81                 dest[6] = cm[block[6]];
82                 dest[7] = cm[block[7]];
83                 dest+=line_size;
84                 block+=8;
85         }
86 }
87 static void idct_add(uint8_t *dest, int line_size, DCTELEM *block)
88 {
89         idct_sh4(block);
90         int i;
91         uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
92         for(i=0;i<8;i++) {
93                 dest[0] = cm[dest[0]+block[0]];
94                 dest[1] = cm[dest[1]+block[1]];
95                 dest[2] = cm[dest[2]+block[2]];
96                 dest[3] = cm[dest[3]+block[3]];
97                 dest[4] = cm[dest[4]+block[4]];
98                 dest[5] = cm[dest[5]+block[5]];
99                 dest[6] = cm[dest[6]+block[6]];
100                 dest[7] = cm[dest[7]+block[7]];
101                 dest+=line_size;
102                 block+=8;
103         }
104 }
105
106 extern void dsputil_init_align(DSPContext* c, AVCodecContext *avctx);
107
108 void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx)
109 {
110         const int idct_algo= avctx->idct_algo;
111         dsputil_init_align(c,avctx);
112
113         c->clear_blocks = clear_blocks_sh4;
114         if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_SH4){
115                 c->idct_put = idct_put;
116                 c->idct_add = idct_add;
117                c->idct     = idct_sh4;
118                 c->idct_permutation_type= FF_NO_IDCT_PERM; //FF_SIMPLE_IDCT_PERM; //FF_LIBMPEG2_IDCT_PERM;
119         }
120 }