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