FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libswscale/vscale.c
Date: 2026-08-23 18:45:53
Exec Total Coverage
Lines: 174 198 87.9%
Functions: 6 6 100.0%
Branches: 93 126 73.8%
Line Branch Exec Source
1 /*
2 * Copyright (C) 2015 Pedro Arthur <bygrandao@gmail.com>
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 #include "libavutil/mem.h"
21 #include "swscale_internal.h"
22
23 typedef struct VScalerContext
24 {
25 uint16_t *filter[2];
26 int32_t *filter_pos;
27 int filter_size;
28 int isMMX;
29 union {
30 yuv2planar1_fn yuv2planar1;
31 yuv2planarX_fn yuv2planarX;
32 yuv2interleavedX_fn yuv2interleavedX;
33 yuv2packed1_fn yuv2packed1;
34 yuv2packed2_fn yuv2packed2;
35 yuv2anyX_fn yuv2anyX;
36 } pfn;
37 yuv2packedX_fn yuv2packedX;
38 } VScalerContext;
39
40
41 22160506 static int lum_planar_vscale(SwsInternal *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
42 {
43 22160506 VScalerContext *inst = desc->instance;
44 22160506 int dstW = desc->dst->width;
45
46 22160506 int first = FFMAX(1-inst->filter_size, inst->filter_pos[sliceY]);
47 22160506 int sp = first - desc->src->plane[0].sliceY;
48 22160506 int dp = sliceY - desc->dst->plane[0].sliceY;
49 22160506 uint8_t **src = desc->src->plane[0].line + sp;
50 22160506 uint8_t **dst = desc->dst->plane[0].line + dp;
51
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 22160506 uint16_t *filter = inst->filter[0] + (inst->isMMX ? 0 : sliceY * inst->filter_size);
52
53
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 22160506 if (inst->filter_size == 1)
54 17237038 inst->pfn.yuv2planar1((const int16_t*)src[0], dst[0], dstW, c->lumDither8, 0);
55 else
56 4923468 inst->pfn.yuv2planarX(filter, inst->filter_size, (const int16_t**)src, dst[0], dstW, c->lumDither8, 0);
57
58
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 22160506 if (desc->alpha) {
59 1075848 int sp = first - desc->src->plane[3].sliceY;
60 1075848 int dp = sliceY - desc->dst->plane[3].sliceY;
61 1075848 uint8_t **src = desc->src->plane[3].line + sp;
62 1075848 uint8_t **dst = desc->dst->plane[3].line + dp;
63
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 1075848 uint16_t *filter = inst->filter[1] + (inst->isMMX ? 0 : sliceY * inst->filter_size);
64
65
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 1075848 if (inst->filter_size == 1)
66 609664 inst->pfn.yuv2planar1((const int16_t*)src[0], dst[0], dstW, c->lumDither8, 0);
67 else
68 466184 inst->pfn.yuv2planarX(filter, inst->filter_size, (const int16_t**)src, dst[0], dstW, c->lumDither8, 0);
69 }
70
71 22160506 return 1;
72 }
73
74 21183173 static int chr_planar_vscale(SwsInternal *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
75 {
76 21183173 const int chrSkipMask = (1 << desc->dst->v_chr_sub_sample) - 1;
77
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 21183173 if (sliceY & chrSkipMask)
78 4157834 return 0;
79 else {
80 17025339 VScalerContext *inst = desc->instance;
81 17025339 int dstW = AV_CEIL_RSHIFT(desc->dst->width, desc->dst->h_chr_sub_sample);
82 17025339 int chrSliceY = sliceY >> desc->dst->v_chr_sub_sample;
83
84 17025339 int first = FFMAX(1-inst->filter_size, inst->filter_pos[chrSliceY]);
85 17025339 int sp1 = first - desc->src->plane[1].sliceY;
86 17025339 int sp2 = first - desc->src->plane[2].sliceY;
87 17025339 int dp1 = chrSliceY - desc->dst->plane[1].sliceY;
88 17025339 int dp2 = chrSliceY - desc->dst->plane[2].sliceY;
89 17025339 uint8_t **src1 = desc->src->plane[1].line + sp1;
90 17025339 uint8_t **src2 = desc->src->plane[2].line + sp2;
91 17025339 uint8_t **dst1 = desc->dst->plane[1].line + dp1;
92 17025339 uint8_t **dst2 = desc->dst->plane[2].line + dp2;
93
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 17025339 uint16_t *filter = inst->filter[0] + (inst->isMMX ? 0 : chrSliceY * inst->filter_size);
94
95
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 17025339 if (c->yuv2nv12cX) {
96 3658408 inst->pfn.yuv2interleavedX(c->opts.dst_format, c->chrDither8, filter, inst->filter_size, (const int16_t**)src1, (const int16_t**)src2, dst1[0], dstW);
97
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 13366931 } else if (inst->filter_size == 1) {
98 5977027 inst->pfn.yuv2planar1((const int16_t*)src1[0], dst1[0], dstW, c->chrDither8, 0);
99 5977027 inst->pfn.yuv2planar1((const int16_t*)src2[0], dst2[0], dstW, c->chrDither8, 3);
100 } else {
101 7389904 inst->pfn.yuv2planarX(filter, inst->filter_size, (const int16_t**)src1, dst1[0], dstW, c->chrDither8, 0);
102
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 7389904 inst->pfn.yuv2planarX(filter, inst->filter_size, (const int16_t**)src2, dst2[0], dstW, c->chrDither8, inst->isMMX ? (c->uv_offx2 >> 1) : 3);
103 }
104 }
105
106 17025339 return 1;
107 }
108
109 5780988 static int packed_vscale(SwsInternal *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
110 {
111 5780988 VScalerContext *inst = desc->instance;
112 5780988 int dstW = desc->dst->width;
113 5780988 int chrSliceY = sliceY >> desc->dst->v_chr_sub_sample;
114
115 5780988 int lum_fsize = inst[0].filter_size;
116 5780988 int chr_fsize = inst[1].filter_size;
117 5780988 uint16_t *lum_filter = inst[0].filter[0];
118 5780988 uint16_t *chr_filter = inst[1].filter[0];
119
120 5780988 int firstLum = FFMAX(1-lum_fsize, inst[0].filter_pos[ sliceY]);
121 5780988 int firstChr = FFMAX(1-chr_fsize, inst[1].filter_pos[chrSliceY]);
122
123 5780988 int sp0 = firstLum - desc->src->plane[0].sliceY;
124 5780988 int sp1 = firstChr - desc->src->plane[1].sliceY;
125 5780988 int sp2 = firstChr - desc->src->plane[2].sliceY;
126 5780988 int sp3 = firstLum - desc->src->plane[3].sliceY;
127 5780988 int dp = sliceY - desc->dst->plane[0].sliceY;
128 5780988 uint8_t **src0 = desc->src->plane[0].line + sp0;
129 5780988 uint8_t **src1 = desc->src->plane[1].line + sp1;
130 5780988 uint8_t **src2 = desc->src->plane[2].line + sp2;
131
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 5780988 uint8_t **src3 = desc->alpha ? desc->src->plane[3].line + sp3 : NULL;
132 5780988 uint8_t **dst = desc->dst->plane[0].line + dp;
133
134
135
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 5780988 if (c->yuv2packed1 && lum_fsize == 1 && chr_fsize == 1) { // unscaled RGB
136 2977509 inst->pfn.yuv2packed1(c, (const int16_t*)*src0, (const int16_t**)src1, (const int16_t**)src2,
137
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 2977509 (const int16_t*)(desc->alpha ? *src3 : NULL), *dst, dstW, 0, sliceY);
138
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 2803479 } else if (c->yuv2packed1 && lum_fsize == 1 && chr_fsize == 2 &&
139 ✗ chr_filter[2 * chrSliceY + 1] + chr_filter[2 * chrSliceY] == 4096 &&
140 ✗ chr_filter[2 * chrSliceY + 1] <= 4096U) { // unscaled RGB
141 ✗ int chrAlpha = chr_filter[2 * chrSliceY + 1];
142 ✗ inst->pfn.yuv2packed1(c, (const int16_t*)*src0, (const int16_t**)src1, (const int16_t**)src2,
143 ✗ (const int16_t*)(desc->alpha ? *src3 : NULL), *dst, dstW, chrAlpha, sliceY);
144
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 2803479 } else if (c->yuv2packed2 && lum_fsize == 2 && chr_fsize == 2 &&
145 ✗ lum_filter[2 * sliceY + 1] + lum_filter[2 * sliceY] == 4096 &&
146 ✗ lum_filter[2 * sliceY + 1] <= 4096U &&
147 ✗ chr_filter[2 * chrSliceY + 1] + chr_filter[2 * chrSliceY] == 4096 &&
148 ✗ chr_filter[2 * chrSliceY + 1] <= 4096U
149 ✗ ) { // bilinear upscale RGB
150 ✗ int lumAlpha = lum_filter[2 * sliceY + 1];
151 ✗ int chrAlpha = chr_filter[2 * chrSliceY + 1];
152 ✗ c->lumMmxFilter[2] =
153 ✗ c->lumMmxFilter[3] = lum_filter[2 * sliceY] * 0x10001;
154 ✗ c->chrMmxFilter[2] =
155 ✗ c->chrMmxFilter[3] = chr_filter[2 * chrSliceY] * 0x10001;
156 ✗ inst->pfn.yuv2packed2(c, (const int16_t**)src0, (const int16_t**)src1, (const int16_t**)src2, (const int16_t**)src3,
157 *dst, dstW, lumAlpha, chrAlpha, sliceY);
158 } else { // general RGB
159
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 2803479 if ((c->yuv2packed1 && lum_fsize == 1 && chr_fsize == 2) ||
160
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 2803479 (c->yuv2packed2 && lum_fsize == 2 && chr_fsize == 2)) {
161 ✗ if (!c->warned_unuseable_bilinear)
162 ✗ av_log(c, AV_LOG_INFO, "Optimized 2 tap filter code cannot be used\n");
163 ✗ c->warned_unuseable_bilinear = 1;
164 }
165
166 2803479 inst->yuv2packedX(c, lum_filter + sliceY * lum_fsize,
167 2803479 (const int16_t**)src0, lum_fsize, chr_filter + chrSliceY * chr_fsize,
168 (const int16_t**)src1, (const int16_t**)src2, chr_fsize, (const int16_t**)src3, *dst, dstW, sliceY);
169 }
170 5780988 return 1;
171 }
172
173 3161919 static int any_vscale(SwsInternal *c, SwsFilterDescriptor *desc, int sliceY, int sliceH)
174 {
175 3161919 VScalerContext *inst = desc->instance;
176 3161919 int dstW = desc->dst->width;
177 3161919 int chrSliceY = sliceY >> desc->dst->v_chr_sub_sample;
178
179 3161919 int lum_fsize = inst[0].filter_size;
180 3161919 int chr_fsize = inst[1].filter_size;
181 3161919 uint16_t *lum_filter = inst[0].filter[0];
182 3161919 uint16_t *chr_filter = inst[1].filter[0];
183
184 3161919 int firstLum = FFMAX(1-lum_fsize, inst[0].filter_pos[ sliceY]);
185 3161919 int firstChr = FFMAX(1-chr_fsize, inst[1].filter_pos[chrSliceY]);
186
187 3161919 int sp0 = firstLum - desc->src->plane[0].sliceY;
188 3161919 int sp1 = firstChr - desc->src->plane[1].sliceY;
189 3161919 int sp2 = firstChr - desc->src->plane[2].sliceY;
190 3161919 int sp3 = firstLum - desc->src->plane[3].sliceY;
191 3161919 int dp0 = sliceY - desc->dst->plane[0].sliceY;
192 3161919 int dp1 = chrSliceY - desc->dst->plane[1].sliceY;
193 3161919 int dp2 = chrSliceY - desc->dst->plane[2].sliceY;
194 3161919 int dp3 = sliceY - desc->dst->plane[3].sliceY;
195
196 3161919 uint8_t **src0 = desc->src->plane[0].line + sp0;
197 3161919 uint8_t **src1 = desc->src->plane[1].line + sp1;
198 3161919 uint8_t **src2 = desc->src->plane[2].line + sp2;
199
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 3161919 uint8_t **src3 = desc->alpha ? desc->src->plane[3].line + sp3 : NULL;
200 6323838 uint8_t *dst[4] = { desc->dst->plane[0].line[dp0],
201 3161919 desc->dst->plane[1].line[dp1],
202 3161919 desc->dst->plane[2].line[dp2],
203
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 3161919 desc->alpha ? desc->dst->plane[3].line[dp3] : NULL };
204
205 av_assert1(!c->yuv2packed1 && !c->yuv2packed2);
206 3161919 inst->pfn.yuv2anyX(c, lum_filter + sliceY * lum_fsize,
207 3161919 (const int16_t**)src0, lum_fsize, chr_filter + sliceY * chr_fsize,
208 (const int16_t**)src1, (const int16_t**)src2, chr_fsize, (const int16_t**)src3, dst, dstW, sliceY);
209
210 3161919 return 1;
211
212 }
213
214 58937 int ff_init_vscale(SwsInternal *c, SwsFilterDescriptor *desc, SwsSlice *src, SwsSlice *dst)
215 {
216 58937 VScalerContext *lumCtx = NULL;
217 58937 VScalerContext *chrCtx = NULL;
218
219
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 58937 if (isPlanarYUV(c->opts.dst_format) || (isGray(c->opts.dst_format) && !isALPHA(c->opts.dst_format))) {
220 45260 lumCtx = av_mallocz(sizeof(VScalerContext));
221
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 45260 if (!lumCtx)
222 ✗ return AVERROR(ENOMEM);
223
224
225 45260 desc[0].process = lum_planar_vscale;
226 45260 desc[0].instance = lumCtx;
227 45260 desc[0].src = src;
228 45260 desc[0].dst = dst;
229 45260 desc[0].alpha = c->needAlpha;
230
231
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 89382 if (!isGray(c->opts.dst_format)) {
232 44122 chrCtx = av_mallocz(sizeof(VScalerContext));
233
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 44122 if (!chrCtx)
234 ✗ return AVERROR(ENOMEM);
235 44122 desc[1].process = chr_planar_vscale;
236 44122 desc[1].instance = chrCtx;
237 44122 desc[1].src = src;
238 44122 desc[1].dst = dst;
239 }
240 } else {
241 13677 lumCtx = av_calloc(2, sizeof(*lumCtx));
242
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 13677 if (!lumCtx)
243 ✗ return AVERROR(ENOMEM);
244 13677 chrCtx = &lumCtx[1];
245
246
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 13677 desc[0].process = c->yuv2packedX ? packed_vscale : any_vscale;
247 13677 desc[0].instance = lumCtx;
248 13677 desc[0].src = src;
249 13677 desc[0].dst = dst;
250 13677 desc[0].alpha = c->needAlpha;
251 }
252
253 58937 ff_init_vscale_pfn(c, c->yuv2plane1, c->yuv2planeX, c->yuv2nv12cX,
254 c->yuv2packed1, c->yuv2packed2, c->yuv2packedX, c->yuv2anyX, c->use_mmx_vfilter);
255 58937 return 0;
256 }
257
258 893188 void ff_init_vscale_pfn(SwsInternal *c,
259 yuv2planar1_fn yuv2plane1,
260 yuv2planarX_fn yuv2planeX,
261 yuv2interleavedX_fn yuv2nv12cX,
262 yuv2packed1_fn yuv2packed1,
263 yuv2packed2_fn yuv2packed2,
264 yuv2packedX_fn yuv2packedX,
265 yuv2anyX_fn yuv2anyX, int use_mmx)
266 {
267 893188 VScalerContext *lumCtx = NULL;
268 893188 VScalerContext *chrCtx = NULL;
269
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 893188 int idx = c->numDesc - (c->is_internal_gamma ? 2 : 1); //FIXME avoid hardcoding indexes
270
271
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 893188 if (isPlanarYUV(c->opts.dst_format) || (isGray(c->opts.dst_format) && !isALPHA(c->opts.dst_format))) {
272
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 605345 if (!isGray(c->opts.dst_format)) {
273 574051 chrCtx = c->desc[idx].instance;
274
275
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 574051 chrCtx->filter[0] = use_mmx ? (int16_t*)c->chrMmxFilter : c->vChrFilter;
276 574051 chrCtx->filter_size = c->vChrFilterSize;
277 574051 chrCtx->filter_pos = c->vChrFilterPos;
278 574051 chrCtx->isMMX = use_mmx;
279
280 574051 --idx;
281
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 574051 if (yuv2nv12cX) chrCtx->pfn.yuv2interleavedX = yuv2nv12cX;
282
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 421821 else if (c->vChrFilterSize == 1) chrCtx->pfn.yuv2planar1 = yuv2plane1;
283 211707 else chrCtx->pfn.yuv2planarX = yuv2planeX;
284 }
285
286 605345 lumCtx = c->desc[idx].instance;
287
288
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 605345 lumCtx->filter[0] = use_mmx ? (int16_t*)c->lumMmxFilter : c->vLumFilter;
289
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 605345 lumCtx->filter[1] = use_mmx ? (int16_t*)c->alpMmxFilter : c->vLumFilter;
290 605345 lumCtx->filter_size = c->vLumFilterSize;
291 605345 lumCtx->filter_pos = c->vLumFilterPos;
292 605345 lumCtx->isMMX = use_mmx;
293
294
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 605345 if (c->vLumFilterSize == 1) lumCtx->pfn.yuv2planar1 = yuv2plane1;
295 81605 else lumCtx->pfn.yuv2planarX = yuv2planeX;
296
297 } else {
298 287843 lumCtx = c->desc[idx].instance;
299 287843 chrCtx = &lumCtx[1];
300
301 287843 lumCtx->filter[0] = c->vLumFilter;
302 287843 lumCtx->filter_size = c->vLumFilterSize;
303 287843 lumCtx->filter_pos = c->vLumFilterPos;
304
305 287843 chrCtx->filter[0] = c->vChrFilter;
306 287843 chrCtx->filter_size = c->vChrFilterSize;
307 287843 chrCtx->filter_pos = c->vChrFilterPos;
308
309 287843 lumCtx->isMMX = use_mmx;
310 287843 chrCtx->isMMX = use_mmx;
311
312
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 287843 if (yuv2packedX) {
313
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 174863 if (c->yuv2packed1 && c->vLumFilterSize == 1 && c->vChrFilterSize <= 2)
314 102861 lumCtx->pfn.yuv2packed1 = yuv2packed1;
315
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 72002 else if (c->yuv2packed2 && c->vLumFilterSize == 2 && c->vChrFilterSize == 2)
316 ✗ lumCtx->pfn.yuv2packed2 = yuv2packed2;
317 174863 lumCtx->yuv2packedX = yuv2packedX;
318 } else
319 112980 lumCtx->pfn.yuv2anyX = yuv2anyX;
320 }
321 893188 }
322