mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-07 11:13:41 +02:00
be449fca79
Neither the asm() nor the __asm__() keyword is part of the C99 standard, but while GCC accepts the former in C89 syntax, it is not accepted in C99 unless GNU extensions are turned on (with -fasm). The latter form is accepted in any syntax as an extension (without requiring further command-line options). Sun Studio C99 compiler also does not accept asm() while accepting __asm__(), albeit reporting warnings that it's not valid C99 syntax. Originally committed as revision 15627 to svn://svn.ffmpeg.org/ffmpeg/trunk
121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/*
|
|
* sh4 dsputil
|
|
*
|
|
* Copyright (c) 2003 BERO <bero@geocities.co.jp>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; 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"
|
|
|
|
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 = ff_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 = ff_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;
|
|
}
|
|
}
|