4 * Copyright (c) 2003 BERO <bero@geocities.co.jp>
6 * This library 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 of the License, or (at your option) any later version.
11 * This library 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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 #include "../avcodec.h"
22 #include "../dsputil.h"
24 static void memzero_align8(void *dst,size_t size)
26 #if defined(__SH4__) || defined(__SH4_SINGLE__) || defined(__SH4_SINGLE_ONLY__)
31 " fschg\n" //single float mode
43 #if defined(__SH4_SINGLE__) || defined(__SH4_SINGLE_ONLY__)
44 " fschg" //back to single
46 : : "r"(dst),"r"(size): "memory" );
60 static void clear_blocks_sh4(DCTELEM *blocks)
62 // if (((int)blocks&7)==0)
63 memzero_align8(blocks,sizeof(DCTELEM)*6*64);
66 extern void idct_sh4(DCTELEM *block);
67 static void idct_put(uint8_t *dest, int line_size, DCTELEM *block)
71 uint8_t *cm = cropTbl + MAX_NEG_CROP;
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]];
85 static void idct_add(uint8_t *dest, int line_size, DCTELEM *block)
89 uint8_t *cm = cropTbl + MAX_NEG_CROP;
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]];
104 extern void dsputil_init_align(DSPContext* c, AVCodecContext *avctx);
106 void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx)
108 const int idct_algo= avctx->idct_algo;
109 dsputil_init_align(c,avctx);
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;
116 c->idct_permutation_type= FF_NO_IDCT_PERM; //FF_SIMPLE_IDCT_PERM; //FF_LIBMPEG2_IDCT_PERM;