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diracdsp.c
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1/*
2 * Copyright (C) 2009 David Conrad
3 *
4 * This file is part of FFmpeg.
5 *
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.
10 *
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.
15 *
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
19 */
20
21#include "config.h"
22#include "libavutil/attributes.h"
23#include "libavutil/common.h"
24#include "diracdsp.h"
25
26#define FILTER(src, stride) \
27 ((21*((src)[ 0*stride] + (src)[1*stride]) \
28 -7*((src)[-1*stride] + (src)[2*stride]) \
29 +3*((src)[-2*stride] + (src)[3*stride]) \
30 -1*((src)[-3*stride] + (src)[4*stride]) + 16) >> 5)
31
32static void dirac_hpel_filter(uint8_t *dsth, uint8_t *dstv, uint8_t *dstc,
33 const uint8_t *src, ptrdiff_t stride, int width, int height)
34{
35 int x, y;
36
37 for (y = 0; y < height; y++) {
38 for (x = -3; x < width+5; x++)
39 dstv[x] = av_clip_uint8(FILTER(src+x, stride));
40
41 for (x = 0; x < width; x++)
42 dstc[x] = av_clip_uint8(FILTER(dstv+x, 1));
43
44 for (x = 0; x < width; x++)
45 dsth[x] = av_clip_uint8(FILTER(src+x, 1));
46
47 src += stride;
48 dsth += stride;
49 dstv += stride;
50 dstc += stride;
51 }
52}
53
54#define PIXOP_BILINEAR(PFX, OP, WIDTH) \
55 static void ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c(uint8_t *dst, const uint8_t *src[5], ptrdiff_t stride, int h) \
56 { \
57 int x; \
58 const uint8_t *s0 = src[0]; \
59 const uint8_t *s1 = src[1]; \
60 const uint8_t *s2 = src[2]; \
61 const uint8_t *s3 = src[3]; \
62 const uint8_t *w = src[4]; \
63 \
64 while (h--) { \
65 for (x = 0; x < WIDTH; x++) { \
66 OP(dst[x], (s0[x]*w[0] + s1[x]*w[1] + s2[x]*w[2] + s3[x]*w[3] + 8) >> 4); \
67 } \
68 \
69 dst += stride; \
70 s0 += stride; \
71 s1 += stride; \
72 s2 += stride; \
73 s3 += stride; \
74 } \
75 }
76
77#define OP_PUT(dst, val) (dst) = (val)
78#define OP_AVG(dst, val) (dst) = (((dst) + (val) + 1)>>1)
79
80PIXOP_BILINEAR(put, OP_PUT, 8)
81PIXOP_BILINEAR(put, OP_PUT, 16)
82PIXOP_BILINEAR(put, OP_PUT, 32)
83PIXOP_BILINEAR(avg, OP_AVG, 8)
84PIXOP_BILINEAR(avg, OP_AVG, 16)
85PIXOP_BILINEAR(avg, OP_AVG, 32)
86
87#define op_scale1(x) block[x] = av_clip_uint8( (block[x]*weight + (1<<(log2_denom-1))) >> log2_denom)
88#define op_scale2(x) dst[x] = av_clip_uint8( (src[x]*weights + dst[x]*weightd + (1<<(log2_denom-1))) >> log2_denom)
89
90#define DIRAC_WEIGHT(W) \
91 static void weight_dirac_pixels ## W ## _c(uint8_t *block, ptrdiff_t stride, \
92 int log2_denom, int weight, int h) \
93 { \
94 int x; \
95 while (h--) { \
96 for (x = 0; x < W; x++) { \
97 op_scale1(x); \
98 op_scale1(x+1); \
99 } \
100 block += stride; \
101 } \
102 } \
103 static void biweight_dirac_pixels ## W ## _c(uint8_t *dst, const uint8_t *src, \
104 ptrdiff_t stride, int log2_denom, \
105 int weightd, int weights, int h) { \
106 int x; \
107 while (h--) { \
108 for (x = 0; x < W; x++) { \
109 op_scale2(x); \
110 op_scale2(x+1); \
111 } \
112 dst += stride; \
113 src += stride; \
114 } \
115 }
116
117DIRAC_WEIGHT(8)
118DIRAC_WEIGHT(16)
119DIRAC_WEIGHT(32)
120
121#define ADD_OBMC(xblen) \
122 static void add_obmc ## xblen ## _c(uint16_t *dst, const uint8_t *src, ptrdiff_t stride, \
123 const uint8_t *obmc_weight, int yblen) \
124 { \
125 int x; \
126 while (yblen--) { \
127 for (x = 0; x < xblen; x += 2) { \
128 dst[x ] += src[x ] * obmc_weight[x ]; \
129 dst[x+1] += src[x+1] * obmc_weight[x+1]; \
130 } \
131 dst += stride; \
132 src += stride; \
133 obmc_weight += 32; \
134 } \
135 }
136
137ADD_OBMC(8)
138ADD_OBMC(16)
139ADD_OBMC(32)
140
141static void put_signed_rect_clamped_8bit_c(uint8_t *dst, ptrdiff_t dst_stride,
142 const uint8_t *_src, ptrdiff_t src_stride,
143 int width, int height)
144{
145 int x, y;
146 const int16_t *src = (const int16_t *)_src;
147 for (y = 0; y < height; y++) {
148 for (x = 0; x < width; x+=4) {
149 dst[x ] = av_clip_uint8(src[x ] + 128);
150 dst[x+1] = av_clip_uint8(src[x+1] + 128);
151 dst[x+2] = av_clip_uint8(src[x+2] + 128);
152 dst[x+3] = av_clip_uint8(src[x+3] + 128);
153 }
154 dst += dst_stride;
155 src += src_stride >> 1;
156 }
157}
158
159#define PUT_SIGNED_RECT_CLAMPED(PX) \
160static void put_signed_rect_clamped_ ## PX ## bit_c(uint8_t *_dst, ptrdiff_t dst_stride, \
161 const uint8_t *_src, ptrdiff_t src_stride, \
162 int width, int height) \
163{ \
164 int x, y; \
165 uint16_t *dst = (uint16_t *)_dst; \
166 const int32_t *src = (const int32_t *)_src; \
167 for (y = 0; y < height; y++) { \
168 for (x = 0; x < width; x+=4) { \
169 dst[x ] = av_clip_uintp2(src[x ] + (1U << (PX - 1)), PX); \
170 dst[x+1] = av_clip_uintp2(src[x+1] + (1U << (PX - 1)), PX); \
171 dst[x+2] = av_clip_uintp2(src[x+2] + (1U << (PX - 1)), PX); \
172 dst[x+3] = av_clip_uintp2(src[x+3] + (1U << (PX - 1)), PX); \
173 } \
174 dst += dst_stride >> 1; \
175 src += src_stride >> 2; \
176 } \
177}
178
179PUT_SIGNED_RECT_CLAMPED(10)
180PUT_SIGNED_RECT_CLAMPED(12)
181
182static void add_rect_clamped_c(uint8_t *dst, const uint16_t *src, ptrdiff_t stride,
183 const int16_t *idwt, ptrdiff_t idwt_stride,
184 int width, int height)
185{
186 int x, y;
187
188 for (y = 0; y < height; y++) {
189 for (x = 0; x < width; x+=2) {
190 dst[x ] = av_clip_uint8(((src[x ]+32)>>6) + idwt[x ]);
191 dst[x+1] = av_clip_uint8(((src[x+1]+32)>>6) + idwt[x+1]);
192 }
193 dst += stride;
194 src += stride;
195 idwt += idwt_stride;
196 }
197}
198
199#define DEQUANT_SUBBAND(PX) \
200static void dequant_subband_ ## PX ## _c(uint8_t *src, uint8_t *dst, ptrdiff_t stride, \
201 const int qf, const int qs, int tot_v, int tot_h) \
202{ \
203 int i, y; \
204 for (y = 0; y < tot_v; y++) { \
205 PX c, *src_r = (PX *)src, *dst_r = (PX *)dst; \
206 for (i = 0; i < tot_h; i++) { \
207 c = *src_r++; \
208 if (c < 0) c = -((-(unsigned)c*qf + qs) >> 2); \
209 else if(c > 0) c = (( (unsigned)c*qf + qs) >> 2); \
210 *dst_r++ = c; \
211 } \
212 src += tot_h << (sizeof(PX) >> 1); \
213 dst += stride; \
214 } \
215}
216
217DEQUANT_SUBBAND(int16_t)
218DEQUANT_SUBBAND(int32_t)
219
220#define PIXFUNC(PFX, WIDTH) \
221 c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \
222 c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \
223 c->PFX ## _dirac_pixels_tab[WIDTH>>4][2] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l4_c; \
224 c->PFX ## _dirac_pixels_tab[WIDTH>>4][3] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c
225
226av_cold void ff_diracdsp_init(DiracDSPContext *c)
227{
228 c->dirac_hpel_filter = dirac_hpel_filter;
229 c->add_rect_clamped = add_rect_clamped_c;
230 c->put_signed_rect_clamped[0] = put_signed_rect_clamped_8bit_c;
231 c->put_signed_rect_clamped[1] = put_signed_rect_clamped_10bit_c;
232 c->put_signed_rect_clamped[2] = put_signed_rect_clamped_12bit_c;
233
234 c->add_dirac_obmc[0] = add_obmc8_c;
235 c->add_dirac_obmc[1] = add_obmc16_c;
236 c->add_dirac_obmc[2] = add_obmc32_c;
237
238 c->weight_dirac_pixels_tab[0] = weight_dirac_pixels8_c;
239 c->weight_dirac_pixels_tab[1] = weight_dirac_pixels16_c;
240 c->weight_dirac_pixels_tab[2] = weight_dirac_pixels32_c;
241 c->biweight_dirac_pixels_tab[0] = biweight_dirac_pixels8_c;
242 c->biweight_dirac_pixels_tab[1] = biweight_dirac_pixels16_c;
243 c->biweight_dirac_pixels_tab[2] = biweight_dirac_pixels32_c;
244
245 c->dequant_subband[0] = c->dequant_subband[2] = dequant_subband_int16_t_c;
246 c->dequant_subband[1] = c->dequant_subband[3] = dequant_subband_int32_t_c;
247
248 PIXFUNC(put, 8);
249 PIXFUNC(put, 16);
250 PIXFUNC(put, 32);
251 PIXFUNC(avg, 8);
252 PIXFUNC(avg, 16);
253 PIXFUNC(avg, 32);
254
255#if ARCH_X86 && HAVE_X86ASM
256 ff_diracdsp_init_x86(c);
257#endif
258}
_src
uint8_t ptrdiff_t const uint8_t * _src
Definition dsp.h:56
dst
uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t int int16_t * dst
Definition dsp.h:87
int32_t
int32_t
Definition audioconvert.c:56
avg
#define avg(a, b, c, d)
Definition colorspacedsp_template.c:28
common.h
common internal and external API header
av_clip_uint8
#define av_clip_uint8
Definition common.h:106
ff_diracdsp_init_x86
void ff_diracdsp_init_x86(DiracDSPContext *c)
Definition diracdsp_init.c:91
OP_AVG
#define OP_AVG(dst, val)
Definition diracdsp.c:78
DEQUANT_SUBBAND
#define DEQUANT_SUBBAND(PX)
Definition diracdsp.c:199
OP_PUT
#define OP_PUT(dst, val)
Definition diracdsp.c:77
PIXOP_BILINEAR
#define PIXOP_BILINEAR(PFX, OP, WIDTH)
Definition diracdsp.c:54
PUT_SIGNED_RECT_CLAMPED
#define PUT_SIGNED_RECT_CLAMPED(PX)
Definition diracdsp.c:159
put_signed_rect_clamped_8bit_c
static void put_signed_rect_clamped_8bit_c(uint8_t *dst, ptrdiff_t dst_stride, const uint8_t *_src, ptrdiff_t src_stride, int width, int height)
Definition diracdsp.c:141
FILTER
#define FILTER(src, stride)
Definition diracdsp.c:26
ff_diracdsp_init
av_cold void ff_diracdsp_init(DiracDSPContext *c)
Definition diracdsp.c:226
add_rect_clamped_c
static void add_rect_clamped_c(uint8_t *dst, const uint16_t *src, ptrdiff_t stride, const int16_t *idwt, ptrdiff_t idwt_stride, int width, int height)
Definition diracdsp.c:182
PIXFUNC
#define PIXFUNC(PFX, WIDTH)
Definition diracdsp.c:220
ADD_OBMC
#define ADD_OBMC(xblen)
Definition diracdsp.c:121
dirac_hpel_filter
static void dirac_hpel_filter(uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, const uint8_t *src, ptrdiff_t stride, int width, int height)
Definition diracdsp.c:32
DIRAC_WEIGHT
#define DIRAC_WEIGHT(W)
Definition diracdsp.c:90
attributes.h
Macro definitions for various function/variable attributes.
av_cold
#define av_cold
Definition attributes.h:117
stride
#define stride
Definition h264pred_template.c:536
src
#define src
Definition vp8dsp.c:248
height
#define height
Definition dsp.h:89
width
#define width
Definition dsp.h:89
c
static double c[64]
Definition vsrc_mptestsrc.c:89
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