/* * sh4 dsputil * * Copyright (c) 2003 BERO <bero@geocities.co.jp> * * This library 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 of the License, or (at your option) any later version. * * This library 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 this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "../avcodec.h" #include "../dsputil.h" static void memzero_align8(void *dst,size_t size) { #if defined(__SH4__) || defined(__SH4_SINGLE__) || defined(__SH4_SINGLE_ONLY__) (char*)dst+=size; size/=8*4; asm( #if defined(__SH4__) " fschg\n" //single float mode #endif " fldi0 fr0\n" " fldi0 fr1\n" " fschg\n" // double "1: \n" \ " dt %1\n" " fmov dr0,@-%0\n" " fmov dr0,@-%0\n" " fmov dr0,@-%0\n" " bf.s 1b\n" " fmov dr0,@-%0\n" #if defined(__SH4_SINGLE__) || defined(__SH4_SINGLE_ONLY__) " fschg" //back to single #endif : : "r"(dst),"r"(size): "memory" ); #else double *d = dst; size/=8*4; do { d[0] = 0.0; d[1] = 0.0; d[2] = 0.0; d[3] = 0.0; d+=4; } while(--size); #endif } static void clear_blocks_sh4(DCTELEM *blocks) { // if (((int)blocks&7)==0) memzero_align8(blocks,sizeof(DCTELEM)*6*64); } extern void idct_sh4(DCTELEM *block); static void idct_put(uint8_t *dest, int line_size, DCTELEM *block) { idct_sh4(block); int i; uint8_t *cm = cropTbl + MAX_NEG_CROP; for(i=0;i<8;i++) { dest[0] = cm[block[0]]; dest[1] = cm[block[1]]; dest[2] = cm[block[2]]; dest[3] = cm[block[3]]; dest[4] = cm[block[4]]; dest[5] = cm[block[5]]; dest[6] = cm[block[6]]; dest[7] = cm[block[7]]; dest+=line_size; block+=8; } } static void idct_add(uint8_t *dest, int line_size, DCTELEM *block) { idct_sh4(block); int i; uint8_t *cm = cropTbl + MAX_NEG_CROP; for(i=0;i<8;i++) { dest[0] = cm[dest[0]+block[0]]; dest[1] = cm[dest[1]+block[1]]; dest[2] = cm[dest[2]+block[2]]; dest[3] = cm[dest[3]+block[3]]; dest[4] = cm[dest[4]+block[4]]; dest[5] = cm[dest[5]+block[5]]; dest[6] = cm[dest[6]+block[6]]; dest[7] = cm[dest[7]+block[7]]; dest+=line_size; block+=8; } } extern void dsputil_init_align(DSPContext* c, AVCodecContext *avctx); void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx) { const int idct_algo= avctx->idct_algo; dsputil_init_align(c,avctx); c->clear_blocks = clear_blocks_sh4; if(idct_algo==FF_IDCT_AUTO || idct_algo==FF_IDCT_SH4){ c->idct_put = idct_put; c->idct_add = idct_add; c->idct = idct_sh4; c->idct_permutation_type= FF_NO_IDCT_PERM; //FF_SIMPLE_IDCT_PERM; //FF_LIBMPEG2_IDCT_PERM; } }