*
* Copyright (c) 2001 Michael Niedermayer <michaelni@gmx.at>
*
- * 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
*/
/**
- * @file simple_idct.c
+ * @file
* simpleidct in C.
*/
*/
#include "avcodec.h"
#include "dsputil.h"
+#include "mathops.h"
#include "simple_idct.h"
#if 0
#define COL_SHIFT 20 // 6
#endif
-#if defined(ARCH_POWERPC_405)
-
-/* signed 16x16 -> 32 multiply add accumulate */
-#define MAC16(rt, ra, rb) \
- asm ("maclhw %0, %2, %3" : "=r" (rt) : "0" (rt), "r" (ra), "r" (rb));
-
-/* signed 16x16 -> 32 multiply */
-#define MUL16(rt, ra, rb) \
- asm ("mullhw %0, %1, %2" : "=r" (rt) : "r" (ra), "r" (rb));
-
-#else
-
-/* signed 16x16 -> 32 multiply add accumulate */
-#define MAC16(rt, ra, rb) rt += (ra) * (rb)
-
-/* signed 16x16 -> 32 multiply */
-#define MUL16(rt, ra, rb) rt = (ra) * (rb)
-
-#endif
-
static inline void idctRowCondDC (DCTELEM * row)
{
int a0, a1, a2, a3, b0, b1, b2, b3;
-#ifdef FAST_64BIT
+#if HAVE_FAST_64BIT
uint64_t temp;
#else
uint32_t temp;
#endif
-#ifdef FAST_64BIT
-#ifdef WORDS_BIGENDIAN
+#if HAVE_FAST_64BIT
+#if HAVE_BIGENDIAN
#define ROW0_MASK 0xffff000000000000LL
#else
#define ROW0_MASK 0xffffLL
a2 -= W6 * row[2];
a3 -= W2 * row[2];
- MUL16(b0, W1, row[1]);
+ b0 = MUL16(W1, row[1]);
MAC16(b0, W3, row[3]);
- MUL16(b1, W3, row[1]);
+ b1 = MUL16(W3, row[1]);
MAC16(b1, -W7, row[3]);
- MUL16(b2, W5, row[1]);
+ b2 = MUL16(W5, row[1]);
MAC16(b2, -W1, row[3]);
- MUL16(b3, W7, row[1]);
+ b3 = MUL16(W7, row[1]);
MAC16(b3, -W5, row[3]);
-#ifdef FAST_64BIT
+#if HAVE_FAST_64BIT
temp = ((uint64_t*)row)[1];
#else
temp = ((uint32_t*)row)[2] | ((uint32_t*)row)[3];
a2 += - W6*col[8*2];
a3 += - W2*col[8*2];
- MUL16(b0, W1, col[8*1]);
- MUL16(b1, W3, col[8*1]);
- MUL16(b2, W5, col[8*1]);
- MUL16(b3, W7, col[8*1]);
+ b0 = MUL16(W1, col[8*1]);
+ b1 = MUL16(W3, col[8*1]);
+ b2 = MUL16(W5, col[8*1]);
+ b3 = MUL16(W7, col[8*1]);
MAC16(b0, + W3, col[8*3]);
MAC16(b1, - W7, col[8*3]);
a2 += - W6*col[8*2];
a3 += - W2*col[8*2];
- MUL16(b0, W1, col[8*1]);
- MUL16(b1, W3, col[8*1]);
- MUL16(b2, W5, col[8*1]);
- MUL16(b3, W7, col[8*1]);
+ b0 = MUL16(W1, col[8*1]);
+ b1 = MUL16(W3, col[8*1]);
+ b2 = MUL16(W5, col[8*1]);
+ b3 = MUL16(W7, col[8*1]);
MAC16(b0, + W3, col[8*3]);
MAC16(b1, - W7, col[8*3]);
a2 += - W6*col[8*2];
a3 += - W2*col[8*2];
- MUL16(b0, W1, col[8*1]);
- MUL16(b1, W3, col[8*1]);
- MUL16(b2, W5, col[8*1]);
- MUL16(b3, W7, col[8*1]);
+ b0 = MUL16(W1, col[8*1]);
+ b1 = MUL16(W3, col[8*1]);
+ b2 = MUL16(W5, col[8*1]);
+ b3 = MUL16(W7, col[8*1]);
MAC16(b0, + W3, col[8*3]);
MAC16(b1, - W7, col[8*3]);
col[56] = ((a0 - b0) >> COL_SHIFT);
}
-void simple_idct_put(uint8_t *dest, int line_size, DCTELEM *block)
+void ff_simple_idct_put(uint8_t *dest, int line_size, DCTELEM *block)
{
int i;
for(i=0; i<8; i++)
idctSparseColPut(dest + i, line_size, block + i);
}
-void simple_idct_add(uint8_t *dest, int line_size, DCTELEM *block)
+void ff_simple_idct_add(uint8_t *dest, int line_size, DCTELEM *block)
{
int i;
for(i=0; i<8; i++)
idctSparseColAdd(dest + i, line_size, block + i);
}
-void simple_idct(DCTELEM *block)
+void ff_simple_idct(DCTELEM *block)
{
int i;
for(i=0; i<8; i++)
and the butterfly must be multiplied by 0.5 * sqrt(2.0) */
#define C_SHIFT (4+1+12)
-static inline void idct4col(uint8_t *dest, int line_size, const DCTELEM *col)
+static inline void idct4col_put(uint8_t *dest, int line_size, const DCTELEM *col)
{
int c0, c1, c2, c3, a0, a1, a2, a3;
const uint8_t *cm = ff_cropTbl + MAX_NEG_CROP;
/* XXX: I think a 1.0/sqrt(2) normalization should be needed to
compensate the extra butterfly stage - I don't have the full DV
specification */
-void simple_idct248_put(uint8_t *dest, int line_size, DCTELEM *block)
+void ff_simple_idct248_put(uint8_t *dest, int line_size, DCTELEM *block)
{
int i;
DCTELEM *ptr;
/* IDCT4 and store */
for(i=0;i<8;i++) {
- idct4col(dest + i, 2 * line_size, block + i);
- idct4col(dest + line_size + i, 2 * line_size, block + 8 + i);
+ idct4col_put(dest + i, 2 * line_size, block + i);
+ idct4col_put(dest + line_size + i, 2 * line_size, block + 8 + i);
}
}
row[3]= (c0 - c1) >> R_SHIFT;
}
-void simple_idct84_add(uint8_t *dest, int line_size, DCTELEM *block)
+void ff_simple_idct84_add(uint8_t *dest, int line_size, DCTELEM *block)
{
int i;
}
}
-void simple_idct48_add(uint8_t *dest, int line_size, DCTELEM *block)
+void ff_simple_idct48_add(uint8_t *dest, int line_size, DCTELEM *block)
{
int i;
}
}
+void ff_simple_idct44_add(uint8_t *dest, int line_size, DCTELEM *block)
+{
+ int i;
+
+ /* IDCT4 on each line */
+ for(i=0; i<4; i++) {
+ idct4row(block + i*8);
+ }
+
+ /* IDCT4 and store */
+ for(i=0; i<4; i++){
+ idct4col_add(dest + i, line_size, block + i);
+ }
+}
projects / ffmpeg / blobdiff