FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/diracdsp.c
Date: 2026-01-23 19:11:46
Exec Total Coverage
Lines: 52 74 70.3%
Functions: 10 23 43.5%
Branches: 44 88 50.0%
Line Branch Exec Source
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
32 ✗ static void dirac_hpel_filter(uint8_t *dsth, uint8_t *dstv, uint8_t *dstc, const uint8_t *src,
33 int 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], int 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
80 ✗ PIXOP_BILINEAR(put, OP_PUT, 8)
81 ✗ PIXOP_BILINEAR(put, OP_PUT, 16)
82 ✗ PIXOP_BILINEAR(put, OP_PUT, 32)
83 ✗ PIXOP_BILINEAR(avg, OP_AVG, 8)
84 ✗ PIXOP_BILINEAR(avg, OP_AVG, 16)
85 ✗ PIXOP_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, int stride, int log2_denom, \
92 int weight, int h) { \
93 int x; \
94 while (h--) { \
95 for (x = 0; x < W; x++) { \
96 op_scale1(x); \
97 op_scale1(x+1); \
98 } \
99 block += stride; \
100 } \
101 } \
102 static void biweight_dirac_pixels ## W ## _c(uint8_t *dst, const uint8_t *src, int stride, int log2_denom, \
103 int weightd, int weights, int h) { \
104 int x; \
105 while (h--) { \
106 for (x = 0; x < W; x++) { \
107 op_scale2(x); \
108 op_scale2(x+1); \
109 } \
110 dst += stride; \
111 src += stride; \
112 } \
113 }
114
115 ✗ DIRAC_WEIGHT(8)
116 ✗ DIRAC_WEIGHT(16)
117 ✗ DIRAC_WEIGHT(32)
118
119 #define ADD_OBMC(xblen) \
120 static void add_obmc ## xblen ## _c(uint16_t *dst, const uint8_t *src, int stride, \
121 const uint8_t *obmc_weight, int yblen) \
122 { \
123 int x; \
124 while (yblen--) { \
125 for (x = 0; x < xblen; x += 2) { \
126 dst[x ] += src[x ] * obmc_weight[x ]; \
127 dst[x+1] += src[x+1] * obmc_weight[x+1]; \
128 } \
129 dst += stride; \
130 src += stride; \
131 obmc_weight += 32; \
132 } \
133 }
134
135
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137
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 2638 ADD_OBMC(32)
138
139 3615 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)
140 {
141 int x, y;
142 3615 const int16_t *src = (const int16_t *)_src;
143
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144
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 3994608 for (x = 0; x < width; x+=4) {
145 3936768 dst[x ] = av_clip_uint8(src[x ] + 128);
146 3936768 dst[x+1] = av_clip_uint8(src[x+1] + 128);
147 3936768 dst[x+2] = av_clip_uint8(src[x+2] + 128);
148 3936768 dst[x+3] = av_clip_uint8(src[x+3] + 128);
149 }
150 57840 dst += dst_stride;
151 57840 src += src_stride >> 1;
152 }
153 3615 }
154
155 #define PUT_SIGNED_RECT_CLAMPED(PX) \
156 static void put_signed_rect_clamped_ ## PX ## bit_c(uint8_t *_dst, int dst_stride, const uint8_t *_src, \
157 int src_stride, int width, int height) \
158 { \
159 int x, y; \
160 uint16_t *dst = (uint16_t *)_dst; \
161 const int32_t *src = (const int32_t *)_src; \
162 for (y = 0; y < height; y++) { \
163 for (x = 0; x < width; x+=4) { \
164 dst[x ] = av_clip_uintp2(src[x ] + (1U << (PX - 1)), PX); \
165 dst[x+1] = av_clip_uintp2(src[x+1] + (1U << (PX - 1)), PX); \
166 dst[x+2] = av_clip_uintp2(src[x+2] + (1U << (PX - 1)), PX); \
167 dst[x+3] = av_clip_uintp2(src[x+3] + (1U << (PX - 1)), PX); \
168 } \
169 dst += dst_stride >> 1; \
170 src += src_stride >> 2; \
171 } \
172 }
173
174
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 3009312 PUT_SIGNED_RECT_CLAMPED(12)
176
177 2697 static void add_rect_clamped_c(uint8_t *dst, const uint16_t *src, int stride,
178 const int16_t *idwt, int idwt_stride,
179 int width, int height)
180 {
181 int x, y;
182
183
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184
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 1684320 for (x = 0; x < width; x+=2) {
185 1670400 dst[x ] = av_clip_uint8(((src[x ]+32)>>6) + idwt[x ]);
186 1670400 dst[x+1] = av_clip_uint8(((src[x+1]+32)>>6) + idwt[x+1]);
187 }
188 13920 dst += stride;
189 13920 src += stride;
190 13920 idwt += idwt_stride;
191 }
192 2697 }
193
194 #define DEQUANT_SUBBAND(PX) \
195 static void dequant_subband_ ## PX ## _c(uint8_t *src, uint8_t *dst, ptrdiff_t stride, \
196 const int qf, const int qs, int tot_v, int tot_h) \
197 { \
198 int i, y; \
199 for (y = 0; y < tot_v; y++) { \
200 PX c, *src_r = (PX *)src, *dst_r = (PX *)dst; \
201 for (i = 0; i < tot_h; i++) { \
202 c = *src_r++; \
203 if (c < 0) c = -((-(unsigned)c*qf + qs) >> 2); \
204 else if(c > 0) c = (( (unsigned)c*qf + qs) >> 2); \
205 *dst_r++ = c; \
206 } \
207 src += tot_h << (sizeof(PX) >> 1); \
208 dst += stride; \
209 } \
210 }
211
212
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 13589532 DEQUANT_SUBBAND(int16_t)
213
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 35739792 DEQUANT_SUBBAND(int32_t)
214
215 #define PIXFUNC(PFX, WIDTH) \
216 c->PFX ## _dirac_pixels_tab[WIDTH>>4][0] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _c; \
217 c->PFX ## _dirac_pixels_tab[WIDTH>>4][1] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l2_c; \
218 c->PFX ## _dirac_pixels_tab[WIDTH>>4][2] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _l4_c; \
219 c->PFX ## _dirac_pixels_tab[WIDTH>>4][3] = ff_ ## PFX ## _dirac_pixels ## WIDTH ## _bilinear_c
220
221 112 av_cold void ff_diracdsp_init(DiracDSPContext *c)
222 {
223 112 c->dirac_hpel_filter = dirac_hpel_filter;
224 112 c->add_rect_clamped = add_rect_clamped_c;
225 112 c->put_signed_rect_clamped[0] = put_signed_rect_clamped_8bit_c;
226 112 c->put_signed_rect_clamped[1] = put_signed_rect_clamped_10bit_c;
227 112 c->put_signed_rect_clamped[2] = put_signed_rect_clamped_12bit_c;
228
229 112 c->add_dirac_obmc[0] = add_obmc8_c;
230 112 c->add_dirac_obmc[1] = add_obmc16_c;
231 112 c->add_dirac_obmc[2] = add_obmc32_c;
232
233 112 c->weight_dirac_pixels_tab[0] = weight_dirac_pixels8_c;
234 112 c->weight_dirac_pixels_tab[1] = weight_dirac_pixels16_c;
235 112 c->weight_dirac_pixels_tab[2] = weight_dirac_pixels32_c;
236 112 c->biweight_dirac_pixels_tab[0] = biweight_dirac_pixels8_c;
237 112 c->biweight_dirac_pixels_tab[1] = biweight_dirac_pixels16_c;
238 112 c->biweight_dirac_pixels_tab[2] = biweight_dirac_pixels32_c;
239
240 112 c->dequant_subband[0] = c->dequant_subband[2] = dequant_subband_int16_t_c;
241 112 c->dequant_subband[1] = c->dequant_subband[3] = dequant_subband_int32_t_c;
242
243 112 PIXFUNC(put, 8);
244 112 PIXFUNC(put, 16);
245 112 PIXFUNC(put, 32);
246 112 PIXFUNC(avg, 8);
247 112 PIXFUNC(avg, 16);
248 112 PIXFUNC(avg, 32);
249
250 #if ARCH_X86 && HAVE_X86ASM
251 112 ff_diracdsp_init_x86(c);
252 #endif
253 112 }
254