*
* Copyright (c) 2001-2003 BERO <bero@geocities.co.jp>
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * 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.
*
- * FFmpeg is distributed in the hope that it will be useful,
+ * 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 FFmpeg; if not, write to the Free Software
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include "../dsputil.h"
+#include "dsputil_sh4.h"
+#include "sh4.h"
+
#define c1 1.38703984532214752434 /* sqrt(2)*cos(1*pi/16) */
#define c2 1.30656296487637657577 /* sqrt(2)*cos(2*pi/16) */
#define c3 1.17587560241935884520 /* sqrt(2)*cos(3*pi/16) */
#undef c6
#undef c7
-#if defined(__SH4_SINGLE__) || defined(__SH4_SINGLE_ONLY__)
-
#define load_matrix(table) \
+ do { \
+ const float *t = table; \
__asm__ volatile( \
" fschg\n" \
" fmov @%0+,xd0\n" \
" fmov @%0+,xd12\n" \
" fmov @%0+,xd14\n" \
" fschg\n" \
- :\
- : "r"(table)\
- : "0" \
- )
+ : "+r"(t) \
+ ); \
+ } while (0)
#define ftrv() \
__asm__ volatile("ftrv xmtrx,fv0" \
- : "=f"(fr0),"=f"(fr1),"=f"(fr2),"=f"(fr3) \
- : "0"(fr0), "1"(fr1), "2"(fr2), "3"(fr3) );
+ : "+f"(fr0),"+f"(fr1),"+f"(fr2),"+f"(fr3));
#define DEFREG \
register float fr0 __asm__("fr0"); \
register float fr2 __asm__("fr2"); \
register float fr3 __asm__("fr3")
-#else
-
-/* generic C code for check */
-
-static void ftrv_(const float xf[],float fv[])
-{
- float f0,f1,f2,f3;
- f0 = fv[0];
- f1 = fv[1];
- f2 = fv[2];
- f3 = fv[3];
- fv[0] = xf[0]*f0 + xf[4]*f1 + xf[ 8]*f2 + xf[12]*f3;
- fv[1] = xf[1]*f0 + xf[5]*f1 + xf[ 9]*f2 + xf[13]*f3;
- fv[2] = xf[2]*f0 + xf[6]*f1 + xf[10]*f2 + xf[14]*f3;
- fv[3] = xf[3]*f0 + xf[7]*f1 + xf[11]*f2 + xf[15]*f3;
-}
-
-static void load_matrix_(float xf[],const float table[])
-{
- int i;
- for(i=0;i<16;i++) xf[i]=table[i];
-}
-
-#define ftrv() ftrv_(xf,fv)
-#define load_matrix(table) load_matrix_(xf,table)
-
-#define DEFREG \
- float fv[4],xf[16]
-
-#define fr0 fv[0]
-#define fr1 fv[1]
-#define fr2 fv[2]
-#define fr3 fv[3]
-
-#endif
-
-#if 1
#define DESCALE(x,n) (x)*(1.0f/(1<<(n)))
-#else
-#define DESCALE(x,n) (((int)(x)+(1<<(n-1)))>>(n))
-#endif
/* this code work worse on gcc cvs. 3.2.3 work fine */
-#if 1
//optimized
-void idct_sh4(DCTELEM *block)
+void ff_idct_sh4(int16_t *block)
{
DEFREG;
int i;
float tblock[8*8],*fblock;
int ofs1,ofs2,ofs3;
+ int fpscr;
-#if defined(__SH4__)
-#error "FIXME!! change to single float"
-#endif
+ fp_single_enter(fpscr);
/* row */
i = 8;
-// ofs1 = sizeof(float)*1;
-// ofs2 = sizeof(float)*2;
-// ofs3 = sizeof(float)*3;
-
do {
float t0,t1,t2,t3;
fr0 = block[1];
block++;
} while(--i);
-#if defined(__SH4__)
-#error "FIXME!! change to double"
-#endif
-}
-#else
-void idct_sh4(DCTELEM *block)
-{
- DEFREG;
-
- int i;
- float tblock[8*8],*fblock;
-
- /* row */
-
- /* even part */
- load_matrix(even_table);
-
- fblock = tblock;
- i = 8;
- do {
- fr0 = block[0];
- fr1 = block[2];
- fr2 = block[4];
- fr3 = block[6];
- block+=8;
- ftrv();
- fblock[0] = fr0;
- fblock[2] = fr1;
- fblock[4] = fr2;
- fblock[6] = fr3;
- fblock+=8;
- } while(--i);
- block-=8*8;
- fblock-=8*8;
-
- load_matrix(odd_table);
-
- i = 8;
-
- do {
- float t0,t1,t2,t3;
- fr0 = block[1];
- fr1 = block[3];
- fr2 = block[5];
- fr3 = block[7];
- block+=8;
- ftrv();
- t0 = fblock[0];
- t1 = fblock[2];
- t2 = fblock[4];
- t3 = fblock[6];
- fblock[0] = t0 + fr0;
- fblock[7] = t0 - fr0;
- fblock[1] = t1 + fr1;
- fblock[6] = t1 - fr1;
- fblock[2] = t2 + fr2;
- fblock[5] = t2 - fr2;
- fblock[3] = t3 + fr3;
- fblock[4] = t3 - fr3;
- fblock+=8;
- } while(--i);
- block-=8*8;
- fblock-=8*8;
-
- /* col */
-
- /* even part */
- load_matrix(even_table);
-
- i = 8;
-
- do {
- fr0 = fblock[8*0];
- fr1 = fblock[8*2];
- fr2 = fblock[8*4];
- fr3 = fblock[8*6];
- ftrv();
- fblock[8*0] = fr0;
- fblock[8*2] = fr1;
- fblock[8*4] = fr2;
- fblock[8*6] = fr3;
- fblock++;
- } while(--i);
- fblock-=8;
-
- load_matrix(odd_table);
-
- i=8;
- do {
- float t0,t1,t2,t3;
- fr0 = fblock[8*1];
- fr1 = fblock[8*3];
- fr2 = fblock[8*5];
- fr3 = fblock[8*7];
- ftrv();
- t0 = fblock[8*0];
- t1 = fblock[8*2];
- t2 = fblock[8*4];
- t3 = fblock[8*6];
- fblock++;
- block[8*0] = DESCALE(t0 + fr0,3);
- block[8*7] = DESCALE(t0 - fr0,3);
- block[8*1] = DESCALE(t1 + fr1,3);
- block[8*6] = DESCALE(t1 - fr1,3);
- block[8*2] = DESCALE(t2 + fr2,3);
- block[8*5] = DESCALE(t2 - fr2,3);
- block[8*3] = DESCALE(t3 + fr3,3);
- block[8*4] = DESCALE(t3 - fr3,3);
- block++;
- } while(--i);
+ fp_single_leave(fpscr);
}
-#endif
projects / ffmpeg / blobdiff