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-rw-r--r--libavcodec/diracdsp.c201
1 files changed, 201 insertions, 0 deletions
diff --git a/libavcodec/diracdsp.c b/libavcodec/diracdsp.c
new file mode 100644
index 0000000000..3b8c39dfea
--- /dev/null
+++ b/libavcodec/diracdsp.c
@@ -0,0 +1,201 @@
+/*
+ * Copyright (C) 2009 David Conrad
+ *
+ * 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 "avcodec.h"
+#include "diracdsp.h"
+#include "libavcodec/x86/diracdsp_mmx.h"
+
+#define FILTER(src, stride) \
+ ((21*((src)[ 0*stride] + (src)[1*stride]) \
+ -7*((src)[-1*stride] + (src)[2*stride]) \
+ +3*((src)[-2*stride] + (src)[3*stride]) \
+ -1*((src)[-3*stride] + (src)[4*stride]) + 16) >> 5)
+
+static void dirac_hpel_filter(uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, const uint8_t *src,
+ int stride, int width, int height)
+{
+ int x, y;
+
+ for (y = 0; y < height; y++) {
+ for (x = -3; x < width+5; x++)
+ dstv[x] = av_clip_uint8(FILTER(src+x, stride));
+
+ for (x = 0; x < width; x++)
+ dstc[x] = av_clip_uint8(FILTER(dstv+x, 1));
+
+ for (x = 0; x < width; x++)
+ dsth[x] = av_clip_uint8(FILTER(src+x, 1));
+
+ src += stride;
+ dsth += stride;
+ dstv += stride;
+ dstc += stride;
+ }
+}
+
+#define PIXOP_BILINEAR(PFX, OP, WIDTH) \
+ static void ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c(uint8_t *dst, const uint8_t *src[5], int stride, int h) \
+ { \
+ int x; \
+ const uint8_t *s0 = src[0]; \
+ const uint8_t *s1 = src[1]; \
+ const uint8_t *s2 = src[2]; \
+ const uint8_t *s3 = src[3]; \
+ const uint8_t *w = src[4]; \
+ \
+ while (h--) { \
+ for (x = 0; x < WIDTH; x++) { \
+ OP(dst[x], (s0[x]*w[0] + s1[x]*w[1] + s2[x]*w[2] + s3[x]*w[3] + 8) >> 4); \
+ } \
+ \
+ dst += stride; \
+ s0 += stride; \
+ s1 += stride; \
+ s2 += stride; \
+ s3 += stride; \
+ } \
+ }
+
+#define OP_PUT(dst, val) (dst) = (val)
+#define OP_AVG(dst, val) (dst) = (((dst) + (val) + 1)>>1)
+
+PIXOP_BILINEAR(put, OP_PUT, 8)
+PIXOP_BILINEAR(put, OP_PUT, 16)
+PIXOP_BILINEAR(put, OP_PUT, 32)
+PIXOP_BILINEAR(avg, OP_AVG, 8)
+PIXOP_BILINEAR(avg, OP_AVG, 16)
+PIXOP_BILINEAR(avg, OP_AVG, 32)
+
+#define op_scale1(x) block[x] = av_clip_uint8( (block[x]*weight + (1<<(log2_denom-1))) >> log2_denom)
+#define op_scale2(x) dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + (1<<(log2_denom-1))) >> log2_denom)
+
+#define DIRAC_WEIGHT(W) \
+ static void weight_dirac_pixels ## W ## _c(uint8_t *block, int stride, int log2_denom, \
+ int weight, int h) { \
+ int x; \
+ while (h--) { \
+ for (x = 0; x < W; x++) { \
+ op_scale1(x); \
+ op_scale1(x+1); \
+ } \
+ block += stride; \
+ } \
+ } \
+ static void biweight_dirac_pixels ## W ## _c(uint8_t *dst, const uint8_t *src, int stride, int log2_denom, \
+ int weightd, int weights, int h) { \
+ int x; \
+ while (h--) { \
+ for (x = 0; x < W; x++) { \
+ op_scale2(x); \
+ op_scale2(x+1); \
+ } \
+ dst += stride; \
+ src += stride; \
+ } \
+ }
+
+DIRAC_WEIGHT(8)
+DIRAC_WEIGHT(16)
+DIRAC_WEIGHT(32)
+
+#define ADD_OBMC(xblen) \
+ static void add_obmc ## xblen ## _c(uint16_t *dst, const uint8_t *src, int stride, \
+ const uint8_t *obmc_weight, int yblen) \
+ { \
+ int x; \
+ while (yblen--) { \
+ for (x = 0; x < xblen; x += 2) { \
+ dst[x ] += src[x ] * obmc_weight[x ]; \
+ dst[x+1] += src[x+1] * obmc_weight[x+1]; \
+ } \
+ dst += stride; \
+ src += stride; \
+ obmc_weight += 32; \
+ } \
+ }
+
+ADD_OBMC(8)
+ADD_OBMC(16)
+ADD_OBMC(32)
+
+static void put_signed_rect_clamped_c(uint8_t *dst, int dst_stride, const int16_t *src, int src_stride, int width, int height)
+{
+ int x, y;
+ for (y = 0; y < height; y++) {
+ for (x = 0; x < width; x+=4) {
+ dst[x ] = av_clip_uint8(src[x ] + 128);
+ dst[x+1] = av_clip_uint8(src[x+1] + 128);
+ dst[x+2] = av_clip_uint8(src[x+2] + 128);
+ dst[x+3] = av_clip_uint8(src[x+3] + 128);
+ }
+ dst += dst_stride;
+ src += src_stride;
+ }
+}
+
+static void add_rect_clamped_c(uint8_t *dst, const uint16_t *src, int stride,
+ const int16_t *idwt, int idwt_stride,
+ int width, int height)
+{
+ int x, y;
+
+ for (y = 0; y < height; y++) {
+ for (x = 0; x < width; x+=2) {
+ dst[x ] = av_clip_uint8(((src[x ]+32)>>6) + idwt[x ]);
+ dst[x+1] = av_clip_uint8(((src[x+1]+32)>>6) + idwt[x+1]);
+ }
+ dst += stride;
+ src += stride;
+ idwt += idwt_stride;
+ }
+}
+
+#define PIXFUNC(PFX, WIDTH) \
+ c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \
+ c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \
+ c->PFX ## _dirac_pixels_tab[WIDTH>>4][2] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l4_c; \
+ c->PFX ## _dirac_pixels_tab[WIDTH>>4][3] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c
+
+void ff_diracdsp_init(DiracDSPContext *c)
+{
+ c->dirac_hpel_filter = dirac_hpel_filter;
+ c->add_rect_clamped = add_rect_clamped_c;
+ c->put_signed_rect_clamped = put_signed_rect_clamped_c;
+
+ c->add_dirac_obmc[0] = add_obmc8_c;
+ c->add_dirac_obmc[1] = add_obmc16_c;
+ c->add_dirac_obmc[2] = add_obmc32_c;
+
+ c->weight_dirac_pixels_tab[0] = weight_dirac_pixels8_c;
+ c->weight_dirac_pixels_tab[1] = weight_dirac_pixels16_c;
+ c->weight_dirac_pixels_tab[2] = weight_dirac_pixels32_c;
+ c->biweight_dirac_pixels_tab[0] = biweight_dirac_pixels8_c;
+ c->biweight_dirac_pixels_tab[1] = biweight_dirac_pixels16_c;
+ c->biweight_dirac_pixels_tab[2] = biweight_dirac_pixels32_c;
+
+ PIXFUNC(put, 8);
+ PIXFUNC(put, 16);
+ PIXFUNC(put, 32);
+ PIXFUNC(avg, 8);
+ PIXFUNC(avg, 16);
+ PIXFUNC(avg, 32);
+
+ if (HAVE_MMX && HAVE_YASM) ff_diracdsp_init_mmx(c);
+}
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