/* * sh4 dsputil * * Copyright (c) 2003 BERO <bero@geocities.co.jp> * * This file is part of Libav. * * Libav 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 2.1 of the License, or (at your option) any later version. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "libavcodec/avcodec.h" #include "libavcodec/dsputil.h" #include "dsputil_sh4.h" #include "sh4.h" static void memzero_align8(void *dst,size_t size) { int fpscr; fp_single_enter(fpscr); dst = (char *)dst + size; size /= 32; __asm__ volatile ( " 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" " fschg" //back to single : "+r"(dst),"+r"(size) :: "memory" ); fp_single_leave(fpscr); } static void clear_blocks_sh4(DCTELEM *blocks) { memzero_align8(blocks,sizeof(DCTELEM)*6*64); } static void idct_put(uint8_t *dest, int line_size, DCTELEM *block) { int i; uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; idct_sh4(block); 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) { int i; uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; idct_sh4(block); 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; } } void dsputil_init_sh4(DSPContext* c, AVCodecContext *avctx) { const int idct_algo= avctx->idct_algo; const int high_bit_depth = avctx->codec_id == CODEC_ID_H264 && avctx->bits_per_raw_sample > 8; dsputil_init_align(c,avctx); if (!high_bit_depth) 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; } }