2 * Copyright (C) 2009 David Conrad
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "libavcodec/x86/diracdsp_mmx.h"
25 #define FILTER(src, stride) \
26 ((21*((src)[ 0*stride] + (src)[1*stride]) \
27 -7*((src)[-1*stride] + (src)[2*stride]) \
28 +3*((src)[-2*stride] + (src)[3*stride]) \
29 -1*((src)[-3*stride] + (src)[4*stride]) + 16) >> 5)
31 static void dirac_hpel_filter(uint8_t *dsth
, uint8_t *dstv
, uint8_t *dstc
, const uint8_t *src
,
32 int stride
, int width
, int height
)
36 for (y
= 0; y
< height
; y
++) {
37 for (x
= -3; x
< width
+5; x
++)
38 dstv
[x
] = av_clip_uint8(FILTER(src
+x
, stride
));
40 for (x
= 0; x
< width
; x
++)
41 dstc
[x
] = av_clip_uint8(FILTER(dstv
+x
, 1));
43 for (x
= 0; x
< width
; x
++)
44 dsth
[x
] = av_clip_uint8(FILTER(src
+x
, 1));
53 #define PIXOP_BILINEAR(PFX, OP, WIDTH) \
54 static void ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c(uint8_t *dst, const uint8_t *src[5], int stride, int h) \
57 const uint8_t *s0 = src[0]; \
58 const uint8_t *s1 = src[1]; \
59 const uint8_t *s2 = src[2]; \
60 const uint8_t *s3 = src[3]; \
61 const uint8_t *w = src[4]; \
64 for (x = 0; x < WIDTH; x++) { \
65 OP(dst[x], (s0[x]*w[0] + s1[x]*w[1] + s2[x]*w[2] + s3[x]*w[3] + 8) >> 4); \
76 #define OP_PUT(dst, val) (dst) = (val)
77 #define OP_AVG(dst, val) (dst) = (((dst) + (val) + 1)>>1)
79 PIXOP_BILINEAR(put
, OP_PUT
, 8)
80 PIXOP_BILINEAR(put
, OP_PUT
, 16)
81 PIXOP_BILINEAR(put
, OP_PUT
, 32)
82 PIXOP_BILINEAR(avg
, OP_AVG
, 8)
83 PIXOP_BILINEAR(avg
, OP_AVG
, 16)
84 PIXOP_BILINEAR(avg
, OP_AVG
, 32)
86 #define op_scale1(x) block[x] = av_clip_uint8( (block[x]*weight + (1<<(log2_denom-1))) >> log2_denom)
87 #define op_scale2(x) dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + (1<<(log2_denom-1))) >> log2_denom)
89 #define DIRAC_WEIGHT(W) \
90 static void weight_dirac_pixels ## W ## _c(uint8_t *block, int stride, int log2_denom, \
91 int weight, int h) { \
94 for (x = 0; x < W; x++) { \
101 static void biweight_dirac_pixels ## W ## _c(uint8_t *dst, const uint8_t *src, int stride, int log2_denom, \
102 int weightd, int weights, int h) { \
105 for (x = 0; x < W; x++) { \
118 #define ADD_OBMC(xblen) \
119 static void add_obmc ## xblen ## _c(uint16_t *dst, const uint8_t *src, int stride, \
120 const uint8_t *obmc_weight, int yblen) \
124 for (x = 0; x < xblen; x += 2) { \
125 dst[x ] += src[x ] * obmc_weight[x ]; \
126 dst[x+1] += src[x+1] * obmc_weight[x+1]; \
138 static void put_signed_rect_clamped_c(uint8_t *dst
, int dst_stride
, const int16_t *src
, int src_stride
, int width
, int height
)
141 for (y
= 0; y
< height
; y
++) {
142 for (x
= 0; x
< width
; x
+=4) {
143 dst
[x
] = av_clip_uint8(src
[x
] + 128);
144 dst
[x
+1] = av_clip_uint8(src
[x
+1] + 128);
145 dst
[x
+2] = av_clip_uint8(src
[x
+2] + 128);
146 dst
[x
+3] = av_clip_uint8(src
[x
+3] + 128);
153 static void add_rect_clamped_c(uint8_t *dst
, const uint16_t *src
, int stride
,
154 const int16_t *idwt
, int idwt_stride
,
155 int width
, int height
)
159 for (y
= 0; y
< height
; y
++) {
160 for (x
= 0; x
< width
; x
+=2) {
161 dst
[x
] = av_clip_uint8(((src
[x
]+32)>>6) + idwt
[x
]);
162 dst
[x
+1] = av_clip_uint8(((src
[x
+1]+32)>>6) + idwt
[x
+1]);
170 #define PIXFUNC(PFX, WIDTH) \
171 c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \
172 c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \
173 c->PFX ## _dirac_pixels_tab[WIDTH>>4][2] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l4_c; \
174 c->PFX ## _dirac_pixels_tab[WIDTH>>4][3] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c
176 void ff_diracdsp_init(DiracDSPContext
*c
)
178 c
->dirac_hpel_filter
= dirac_hpel_filter
;
179 c
->add_rect_clamped
= add_rect_clamped_c
;
180 c
->put_signed_rect_clamped
= put_signed_rect_clamped_c
;
182 c
->add_dirac_obmc
[0] = add_obmc8_c
;
183 c
->add_dirac_obmc
[1] = add_obmc16_c
;
184 c
->add_dirac_obmc
[2] = add_obmc32_c
;
186 c
->weight_dirac_pixels_tab
[0] = weight_dirac_pixels8_c
;
187 c
->weight_dirac_pixels_tab
[1] = weight_dirac_pixels16_c
;
188 c
->weight_dirac_pixels_tab
[2] = weight_dirac_pixels32_c
;
189 c
->biweight_dirac_pixels_tab
[0] = biweight_dirac_pixels8_c
;
190 c
->biweight_dirac_pixels_tab
[1] = biweight_dirac_pixels16_c
;
191 c
->biweight_dirac_pixels_tab
[2] = biweight_dirac_pixels32_c
;
200 if (HAVE_MMX
&& HAVE_YASM
) ff_diracdsp_init_mmx(c
);