FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/diracdsp.c
Date: 2026-08-26 01:27:24
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,
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
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, 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
117 ✗ DIRAC_WEIGHT(8)
118 ✗ DIRAC_WEIGHT(16)
119 ✗ DIRAC_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
137
4/4
✓ Branch 0 taken 2253812 times.
✓ Branch 1 taken 563453 times.
✓ Branch 2 taken 563453 times.
✓ Branch 3 taken 70416 times.
 2887681 ADD_OBMC(8)
138
4/4
✓ Branch 0 taken 4508176 times.
✓ Branch 1 taken 563522 times.
✓ Branch 2 taken 563522 times.
✓ Branch 3 taken 35210 times.
 5106908 ADD_OBMC(16)
139
4/4
✓ Branch 0 taken 2992 times.
✓ Branch 1 taken 187 times.
✓ Branch 2 taken 187 times.
✓ Branch 3 taken 4 times.
 3183 ADD_OBMC(32)
140
141 3615 static 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 3615 const int16_t *src = (const int16_t *)_src;
147
2/2
✓ Branch 0 taken 57840 times.
✓ Branch 1 taken 3615 times.
 61455 for (y = 0; y < height; y++) {
148
2/2
✓ Branch 0 taken 3936768 times.
✓ Branch 1 taken 57840 times.
 3994608 for (x = 0; x < width; x+=4) {
149 3936768 dst[x ] = av_clip_uint8(src[x ] + 128);
150 3936768 dst[x+1] = av_clip_uint8(src[x+1] + 128);
151 3936768 dst[x+2] = av_clip_uint8(src[x+2] + 128);
152 3936768 dst[x+3] = av_clip_uint8(src[x+3] + 128);
153 }
154 57840 dst += dst_stride;
155 57840 src += src_stride >> 1;
156 }
157 3615 }
158
159 #define PUT_SIGNED_RECT_CLAMPED(PX) \
160 static 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
179
4/4
✓ Branch 0 taken 4790016 times.
✓ Branch 1 taken 72576 times.
✓ Branch 2 taken 72576 times.
✓ Branch 3 taken 4536 times.
 4867128 PUT_SIGNED_RECT_CLAMPED(10)
180
4/4
✓ Branch 0 taken 2965248 times.
✓ Branch 1 taken 41472 times.
✓ Branch 2 taken 41472 times.
✓ Branch 3 taken 2592 times.
 3009312 PUT_SIGNED_RECT_CLAMPED(12)
181
182 2697 static 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
2/2
✓ Branch 0 taken 13920 times.
✓ Branch 1 taken 2697 times.
 16617 for (y = 0; y < height; y++) {
189
2/2
✓ Branch 0 taken 1670400 times.
✓ Branch 1 taken 13920 times.
 1684320 for (x = 0; x < width; x+=2) {
190 1670400 dst[x ] = av_clip_uint8(((src[x ]+32)>>6) + idwt[x ]);
191 1670400 dst[x+1] = av_clip_uint8(((src[x+1]+32)>>6) + idwt[x+1]);
192 }
193 13920 dst += stride;
194 13920 src += stride;
195 13920 idwt += idwt_stride;
196 }
197 2697 }
198
199 #define DEQUANT_SUBBAND(PX) \
200 static 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
217
8/8
✓ Branch 0 taken 4884043 times.
✓ Branch 1 taken 6976949 times.
✓ Branch 2 taken 4850267 times.
✓ Branch 3 taken 2126682 times.
✓ Branch 4 taken 11860992 times.
✓ Branch 5 taken 1311552 times.
✓ Branch 6 taken 1311552 times.
✓ Branch 7 taken 416988 times.
 13589532 DEQUANT_SUBBAND(int16_t)
218
8/8
✓ Branch 0 taken 14665666 times.
✓ Branch 1 taken 16355390 times.
✓ Branch 2 taken 14417859 times.
✓ Branch 3 taken 1937531 times.
✓ Branch 4 taken 31021056 times.
✓ Branch 5 taken 3606768 times.
✓ Branch 6 taken 3606768 times.
✓ Branch 7 taken 1111968 times.
 35739792 DEQUANT_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
226 112 av_cold void ff_diracdsp_init(DiracDSPContext *c)
227 {
228 112 c->dirac_hpel_filter = dirac_hpel_filter;
229 112 c->add_rect_clamped = add_rect_clamped_c;
230 112 c->put_signed_rect_clamped[0] = put_signed_rect_clamped_8bit_c;
231 112 c->put_signed_rect_clamped[1] = put_signed_rect_clamped_10bit_c;
232 112 c->put_signed_rect_clamped[2] = put_signed_rect_clamped_12bit_c;
233
234 112 c->add_dirac_obmc[0] = add_obmc8_c;
235 112 c->add_dirac_obmc[1] = add_obmc16_c;
236 112 c->add_dirac_obmc[2] = add_obmc32_c;
237
238 112 c->weight_dirac_pixels_tab[0] = weight_dirac_pixels8_c;
239 112 c->weight_dirac_pixels_tab[1] = weight_dirac_pixels16_c;
240 112 c->weight_dirac_pixels_tab[2] = weight_dirac_pixels32_c;
241 112 c->biweight_dirac_pixels_tab[0] = biweight_dirac_pixels8_c;
242 112 c->biweight_dirac_pixels_tab[1] = biweight_dirac_pixels16_c;
243 112 c->biweight_dirac_pixels_tab[2] = biweight_dirac_pixels32_c;
244
245 112 c->dequant_subband[0] = c->dequant_subband[2] = dequant_subband_int16_t_c;
246 112 c->dequant_subband[1] = c->dequant_subband[3] = dequant_subband_int32_t_c;
247
248 112 PIXFUNC(put, 8);
249 112 PIXFUNC(put, 16);
250 112 PIXFUNC(put, 32);
251 112 PIXFUNC(avg, 8);
252 112 PIXFUNC(avg, 16);
253 112 PIXFUNC(avg, 32);
254
255 #if ARCH_X86 && HAVE_X86ASM
256 112 ff_diracdsp_init_x86(c);
257 #endif
258 112 }
259