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authorFabrice Bellard <fabrice@bellard.org>2001-07-22 14:18:56 +0000
committerFabrice Bellard <fabrice@bellard.org>2001-07-22 14:18:56 +0000
commitde6d9b6404bfd1c589799142da5a95428f146edd (patch)
tree75ae0cbb74bdfafb6f1a40922db111a103db3bcf /libavcodec/dsputil.c
parent1b58d58ddaf8a8c766a0353885ff504babed0453 (diff)
downloadffmpeg-de6d9b6404bfd1c589799142da5a95428f146edd.tar.gz
Initial revision
Originally committed as revision 5 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/dsputil.c')
-rw-r--r--libavcodec/dsputil.c383
1 files changed, 383 insertions, 0 deletions
diff --git a/libavcodec/dsputil.c b/libavcodec/dsputil.c
new file mode 100644
index 0000000000..7e544a4524
--- /dev/null
+++ b/libavcodec/dsputil.c
@@ -0,0 +1,383 @@
+/*
+ * DSP utils
+ * Copyright (c) 2000, 2001 Gerard Lantau.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+#include <stdlib.h>
+#include <stdio.h>
+#include "avcodec.h"
+#include "dsputil.h"
+
+#ifdef CONFIG_MMX
+int mm_flags; /* multimedia extension flags */
+#endif
+
+void (*get_pixels)(DCTELEM *block, const UINT8 *pixels, int line_size);
+void (*put_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
+void (*add_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
+
+op_pixels_abs_func pix_abs16x16;
+op_pixels_abs_func pix_abs16x16_x2;
+op_pixels_abs_func pix_abs16x16_y2;
+op_pixels_abs_func pix_abs16x16_xy2;
+
+static UINT8 cropTbl[256 + 2 * MAX_NEG_CROP];
+UINT32 squareTbl[512];
+
+void get_pixels_c(DCTELEM *block, const UINT8 *pixels, int line_size)
+{
+ DCTELEM *p;
+ const UINT8 *pix;
+ int i;
+
+ /* read the pixels */
+ p = block;
+ pix = pixels;
+ for(i=0;i<8;i++) {
+ p[0] = pix[0];
+ p[1] = pix[1];
+ p[2] = pix[2];
+ p[3] = pix[3];
+ p[4] = pix[4];
+ p[5] = pix[5];
+ p[6] = pix[6];
+ p[7] = pix[7];
+ pix += line_size;
+ p += 8;
+ }
+}
+
+void put_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size)
+{
+ const DCTELEM *p;
+ UINT8 *pix;
+ int i;
+ UINT8 *cm = cropTbl + MAX_NEG_CROP;
+
+ /* read the pixels */
+ p = block;
+ pix = pixels;
+ for(i=0;i<8;i++) {
+ pix[0] = cm[p[0]];
+ pix[1] = cm[p[1]];
+ pix[2] = cm[p[2]];
+ pix[3] = cm[p[3]];
+ pix[4] = cm[p[4]];
+ pix[5] = cm[p[5]];
+ pix[6] = cm[p[6]];
+ pix[7] = cm[p[7]];
+ pix += line_size;
+ p += 8;
+ }
+}
+
+void add_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size)
+{
+ const DCTELEM *p;
+ UINT8 *pix;
+ int i;
+ UINT8 *cm = cropTbl + MAX_NEG_CROP;
+
+ /* read the pixels */
+ p = block;
+ pix = pixels;
+ for(i=0;i<8;i++) {
+ pix[0] = cm[pix[0] + p[0]];
+ pix[1] = cm[pix[1] + p[1]];
+ pix[2] = cm[pix[2] + p[2]];
+ pix[3] = cm[pix[3] + p[3]];
+ pix[4] = cm[pix[4] + p[4]];
+ pix[5] = cm[pix[5] + p[5]];
+ pix[6] = cm[pix[6] + p[6]];
+ pix[7] = cm[pix[7] + p[7]];
+ pix += line_size;
+ p += 8;
+ }
+}
+
+#define PIXOP(BTYPE, OPNAME, OP, INCR) \
+ \
+static void OPNAME ## _pixels(BTYPE *block, const UINT8 *pixels, int line_size, int h) \
+{ \
+ BTYPE *p; \
+ const UINT8 *pix; \
+ \
+ p = block; \
+ pix = pixels; \
+ do { \
+ OP(p[0], pix[0]); \
+ OP(p[1], pix[1]); \
+ OP(p[2], pix[2]); \
+ OP(p[3], pix[3]); \
+ OP(p[4], pix[4]); \
+ OP(p[5], pix[5]); \
+ OP(p[6], pix[6]); \
+ OP(p[7], pix[7]); \
+ pix += line_size; \
+ p += INCR; \
+ } while (--h);; \
+} \
+ \
+static void OPNAME ## _pixels_x2(BTYPE *block, const UINT8 *pixels, int line_size, int h) \
+{ \
+ BTYPE *p; \
+ const UINT8 *pix; \
+ \
+ p = block; \
+ pix = pixels; \
+ do { \
+ OP(p[0], avg2(pix[0], pix[1])); \
+ OP(p[1], avg2(pix[1], pix[2])); \
+ OP(p[2], avg2(pix[2], pix[3])); \
+ OP(p[3], avg2(pix[3], pix[4])); \
+ OP(p[4], avg2(pix[4], pix[5])); \
+ OP(p[5], avg2(pix[5], pix[6])); \
+ OP(p[6], avg2(pix[6], pix[7])); \
+ OP(p[7], avg2(pix[7], pix[8])); \
+ pix += line_size; \
+ p += INCR; \
+ } while (--h); \
+} \
+ \
+static void OPNAME ## _pixels_y2(BTYPE *block, const UINT8 *pixels, int line_size, int h) \
+{ \
+ BTYPE *p; \
+ const UINT8 *pix; \
+ const UINT8 *pix1; \
+ \
+ p = block; \
+ pix = pixels; \
+ pix1 = pixels + line_size; \
+ do { \
+ OP(p[0], avg2(pix[0], pix1[0])); \
+ OP(p[1], avg2(pix[1], pix1[1])); \
+ OP(p[2], avg2(pix[2], pix1[2])); \
+ OP(p[3], avg2(pix[3], pix1[3])); \
+ OP(p[4], avg2(pix[4], pix1[4])); \
+ OP(p[5], avg2(pix[5], pix1[5])); \
+ OP(p[6], avg2(pix[6], pix1[6])); \
+ OP(p[7], avg2(pix[7], pix1[7])); \
+ pix += line_size; \
+ pix1 += line_size; \
+ p += INCR; \
+ } while(--h); \
+} \
+ \
+static void OPNAME ## _pixels_xy2(BTYPE *block, const UINT8 *pixels, int line_size, int h) \
+{ \
+ BTYPE *p; \
+ const UINT8 *pix; \
+ const UINT8 *pix1; \
+ \
+ p = block; \
+ pix = pixels; \
+ pix1 = pixels + line_size; \
+ do { \
+ OP(p[0], avg4(pix[0], pix[1], pix1[0], pix1[1])); \
+ OP(p[1], avg4(pix[1], pix[2], pix1[1], pix1[2])); \
+ OP(p[2], avg4(pix[2], pix[3], pix1[2], pix1[3])); \
+ OP(p[3], avg4(pix[3], pix[4], pix1[3], pix1[4])); \
+ OP(p[4], avg4(pix[4], pix[5], pix1[4], pix1[5])); \
+ OP(p[5], avg4(pix[5], pix[6], pix1[5], pix1[6])); \
+ OP(p[6], avg4(pix[6], pix[7], pix1[6], pix1[7])); \
+ OP(p[7], avg4(pix[7], pix[8], pix1[7], pix1[8])); \
+ pix += line_size; \
+ pix1 += line_size; \
+ p += INCR; \
+ } while(--h); \
+} \
+ \
+void (*OPNAME ## _pixels_tab[4])(BTYPE *block, const UINT8 *pixels, int line_size, int h) = { \
+ OPNAME ## _pixels, \
+ OPNAME ## _pixels_x2, \
+ OPNAME ## _pixels_y2, \
+ OPNAME ## _pixels_xy2, \
+};
+
+
+/* rounding primitives */
+#define avg2(a,b) ((a+b+1)>>1)
+#define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
+
+#define op_put(a, b) a = b
+#define op_avg(a, b) a = avg2(a, b)
+#define op_sub(a, b) a -= b
+
+PIXOP(UINT8, put, op_put, line_size)
+PIXOP(UINT8, avg, op_avg, line_size)
+
+PIXOP(DCTELEM, sub, op_sub, 8)
+
+/* not rounding primitives */
+#undef avg2
+#undef avg4
+#define avg2(a,b) ((a+b)>>1)
+#define avg4(a,b,c,d) ((a+b+c+d+1)>>2)
+
+PIXOP(UINT8, put_no_rnd, op_put, line_size)
+PIXOP(UINT8, avg_no_rnd, op_avg, line_size)
+
+/* motion estimation */
+
+#undef avg2
+#undef avg4
+#define avg2(a,b) ((a+b+1)>>1)
+#define avg4(a,b,c,d) ((a+b+c+d+2)>>2)
+
+int pix_abs16x16_c(UINT8 *pix1, UINT8 *pix2, int line_size, int h)
+{
+ int s, i;
+
+ s = 0;
+ for(i=0;i<h;i++) {
+ s += abs(pix1[0] - pix2[0]);
+ s += abs(pix1[1] - pix2[1]);
+ s += abs(pix1[2] - pix2[2]);
+ s += abs(pix1[3] - pix2[3]);
+ s += abs(pix1[4] - pix2[4]);
+ s += abs(pix1[5] - pix2[5]);
+ s += abs(pix1[6] - pix2[6]);
+ s += abs(pix1[7] - pix2[7]);
+ s += abs(pix1[8] - pix2[8]);
+ s += abs(pix1[9] - pix2[9]);
+ s += abs(pix1[10] - pix2[10]);
+ s += abs(pix1[11] - pix2[11]);
+ s += abs(pix1[12] - pix2[12]);
+ s += abs(pix1[13] - pix2[13]);
+ s += abs(pix1[14] - pix2[14]);
+ s += abs(pix1[15] - pix2[15]);
+ pix1 += line_size;
+ pix2 += line_size;
+ }
+ return s;
+}
+
+int pix_abs16x16_x2_c(UINT8 *pix1, UINT8 *pix2, int line_size, int h)
+{
+ int s, i;
+
+ s = 0;
+ for(i=0;i<h;i++) {
+ s += abs(pix1[0] - avg2(pix2[0], pix2[1]));
+ s += abs(pix1[1] - avg2(pix2[1], pix2[2]));
+ s += abs(pix1[2] - avg2(pix2[2], pix2[3]));
+ s += abs(pix1[3] - avg2(pix2[3], pix2[4]));
+ s += abs(pix1[4] - avg2(pix2[4], pix2[5]));
+ s += abs(pix1[5] - avg2(pix2[5], pix2[6]));
+ s += abs(pix1[6] - avg2(pix2[6], pix2[7]));
+ s += abs(pix1[7] - avg2(pix2[7], pix2[8]));
+ s += abs(pix1[8] - avg2(pix2[8], pix2[9]));
+ s += abs(pix1[9] - avg2(pix2[9], pix2[10]));
+ s += abs(pix1[10] - avg2(pix2[10], pix2[11]));
+ s += abs(pix1[11] - avg2(pix2[11], pix2[12]));
+ s += abs(pix1[12] - avg2(pix2[12], pix2[13]));
+ s += abs(pix1[13] - avg2(pix2[13], pix2[14]));
+ s += abs(pix1[14] - avg2(pix2[14], pix2[15]));
+ s += abs(pix1[15] - avg2(pix2[15], pix2[16]));
+ pix1 += line_size;
+ pix2 += line_size;
+ }
+ return s;
+}
+
+int pix_abs16x16_y2_c(UINT8 *pix1, UINT8 *pix2, int line_size, int h)
+{
+ int s, i;
+ UINT8 *pix3 = pix2 + line_size;
+
+ s = 0;
+ for(i=0;i<h;i++) {
+ s += abs(pix1[0] - avg2(pix2[0], pix3[0]));
+ s += abs(pix1[1] - avg2(pix2[1], pix3[1]));
+ s += abs(pix1[2] - avg2(pix2[2], pix3[2]));
+ s += abs(pix1[3] - avg2(pix2[3], pix3[3]));
+ s += abs(pix1[4] - avg2(pix2[4], pix3[4]));
+ s += abs(pix1[5] - avg2(pix2[5], pix3[5]));
+ s += abs(pix1[6] - avg2(pix2[6], pix3[6]));
+ s += abs(pix1[7] - avg2(pix2[7], pix3[7]));
+ s += abs(pix1[8] - avg2(pix2[8], pix3[8]));
+ s += abs(pix1[9] - avg2(pix2[9], pix3[9]));
+ s += abs(pix1[10] - avg2(pix2[10], pix3[10]));
+ s += abs(pix1[11] - avg2(pix2[11], pix3[11]));
+ s += abs(pix1[12] - avg2(pix2[12], pix3[12]));
+ s += abs(pix1[13] - avg2(pix2[13], pix3[13]));
+ s += abs(pix1[14] - avg2(pix2[14], pix3[14]));
+ s += abs(pix1[15] - avg2(pix2[15], pix3[15]));
+ pix1 += line_size;
+ pix2 += line_size;
+ pix3 += line_size;
+ }
+ return s;
+}
+
+int pix_abs16x16_xy2_c(UINT8 *pix1, UINT8 *pix2, int line_size, int h)
+{
+ int s, i;
+ UINT8 *pix3 = pix2 + line_size;
+
+ s = 0;
+ for(i=0;i<h;i++) {
+ s += abs(pix1[0] - avg4(pix2[0], pix2[1], pix3[0], pix3[1]));
+ s += abs(pix1[1] - avg4(pix2[1], pix2[2], pix3[1], pix3[2]));
+ s += abs(pix1[2] - avg4(pix2[2], pix2[3], pix3[2], pix3[3]));
+ s += abs(pix1[3] - avg4(pix2[3], pix2[4], pix3[3], pix3[4]));
+ s += abs(pix1[4] - avg4(pix2[4], pix2[5], pix3[4], pix3[5]));
+ s += abs(pix1[5] - avg4(pix2[5], pix2[6], pix3[5], pix3[6]));
+ s += abs(pix1[6] - avg4(pix2[6], pix2[7], pix3[6], pix3[7]));
+ s += abs(pix1[7] - avg4(pix2[7], pix2[8], pix3[7], pix3[8]));
+ s += abs(pix1[8] - avg4(pix2[8], pix2[9], pix3[8], pix3[9]));
+ s += abs(pix1[9] - avg4(pix2[9], pix2[10], pix3[9], pix3[10]));
+ s += abs(pix1[10] - avg4(pix2[10], pix2[11], pix3[10], pix3[11]));
+ s += abs(pix1[11] - avg4(pix2[11], pix2[12], pix3[11], pix3[12]));
+ s += abs(pix1[12] - avg4(pix2[12], pix2[13], pix3[12], pix3[13]));
+ s += abs(pix1[13] - avg4(pix2[13], pix2[14], pix3[13], pix3[14]));
+ s += abs(pix1[14] - avg4(pix2[14], pix2[15], pix3[14], pix3[15]));
+ s += abs(pix1[15] - avg4(pix2[15], pix2[16], pix3[15], pix3[16]));
+ pix1 += line_size;
+ pix2 += line_size;
+ pix3 += line_size;
+ }
+ return s;
+}
+
+void dsputil_init(void)
+{
+ int i;
+
+ for(i=0;i<256;i++) cropTbl[i + MAX_NEG_CROP] = i;
+ for(i=0;i<MAX_NEG_CROP;i++) {
+ cropTbl[i] = 0;
+ cropTbl[i + MAX_NEG_CROP + 256] = 255;
+ }
+
+ for(i=0;i<512;i++) {
+ squareTbl[i] = (i - 256) * (i - 256);
+ }
+
+ get_pixels = get_pixels_c;
+ put_pixels_clamped = put_pixels_clamped_c;
+ add_pixels_clamped = add_pixels_clamped_c;
+
+ pix_abs16x16 = pix_abs16x16_c;
+ pix_abs16x16_x2 = pix_abs16x16_x2_c;
+ pix_abs16x16_y2 = pix_abs16x16_y2_c;
+ pix_abs16x16_xy2 = pix_abs16x16_xy2_c;
+ av_fdct = jpeg_fdct_ifast;
+
+#ifdef CONFIG_MMX
+ dsputil_init_mmx();
+#endif
+}
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