FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_transpose.c
Date: 2022-12-05 03:11:11
Exec Total Coverage
Lines: 154 175 88.0%
Functions: 17 17 100.0%
Branches: 84 105 80.0%

Line Branch Exec Source
1 /*
2 * Copyright (c) 2010 Stefano Sabatini
3 * Copyright (c) 2008 Vitor Sessak
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * transposition filter
25 * Based on MPlayer libmpcodecs/vf_rotate.c.
26 */
27
28 #include <stdio.h>
29
30 #include "libavutil/avassert.h"
31 #include "libavutil/imgutils.h"
32 #include "libavutil/internal.h"
33 #include "libavutil/intreadwrite.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/pixdesc.h"
36
37 #include "avfilter.h"
38 #include "formats.h"
39 #include "internal.h"
40 #include "video.h"
41 #include "transpose.h"
42
43 typedef struct TransContext {
44 const AVClass *class;
45 int hsub, vsub;
46 int planes;
47 int pixsteps[4];
48
49 int passthrough; ///< PassthroughType, landscape passthrough mode enabled
50 int dir; ///< TransposeDir
51
52 TransVtable vtables[4];
53 } TransContext;
54
55 139 static int query_formats(AVFilterContext *ctx)
56 {
57 139 AVFilterFormats *pix_fmts = NULL;
58 const AVPixFmtDescriptor *desc;
59 int fmt, ret;
60
61
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30997 for (fmt = 0; desc = av_pix_fmt_desc_get(fmt); fmt++) {
62
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30858 if (!(desc->flags & AV_PIX_FMT_FLAG_PAL ||
63
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30719 desc->flags & AV_PIX_FMT_FLAG_HWACCEL ||
64
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28773 desc->flags & AV_PIX_FMT_FLAG_BITSTREAM ||
65
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50040 desc->log2_chroma_w != desc->log2_chroma_h) &&
66 21962 (ret = ff_add_format(&pix_fmts, fmt)) < 0)
67 return ret;
68 }
69
70
71 139 return ff_set_common_formats(ctx, pix_fmts);
72 }
73
74 473278 static inline void transpose_block_8_c(uint8_t *src, ptrdiff_t src_linesize,
75 uint8_t *dst, ptrdiff_t dst_linesize,
76 int w, int h)
77 {
78 int x, y;
79
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80
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35255616 for (x = 0; x < w; x++)
81 31473792 dst[x] = src[x*src_linesize];
82 473278 }
83
84 471978 static void transpose_8x8_8_c(uint8_t *src, ptrdiff_t src_linesize,
85 uint8_t *dst, ptrdiff_t dst_linesize)
86 {
87 471978 transpose_block_8_c(src, src_linesize, dst, dst_linesize, 8, 8);
88 471978 }
89
90 287496 static inline void transpose_block_16_c(uint8_t *src, ptrdiff_t src_linesize,
91 uint8_t *dst, ptrdiff_t dst_linesize,
92 int w, int h)
93 {
94 int x, y;
95
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96
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97 18399744 *((uint16_t *)(dst + 2*x)) = *((uint16_t *)(src + x*src_linesize));
98 287496 }
99
100 287496 static void transpose_8x8_16_c(uint8_t *src, ptrdiff_t src_linesize,
101 uint8_t *dst, ptrdiff_t dst_linesize)
102 {
103 287496 transpose_block_16_c(src, src_linesize, dst, dst_linesize, 8, 8);
104 287496 }
105
106 3168 static inline void transpose_block_24_c(uint8_t *src, ptrdiff_t src_linesize,
107 uint8_t *dst, ptrdiff_t dst_linesize,
108 int w, int h)
109 {
110 int x, y;
111
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28512 for (y = 0; y < h; y++, dst += dst_linesize) {
112
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228096 for (x = 0; x < w; x++) {
113 202752 int32_t v = AV_RB24(src + x*src_linesize + y*3);
114 202752 AV_WB24(dst + 3*x, v);
115 }
116 }
117 3168 }
118
119 3168 static void transpose_8x8_24_c(uint8_t *src, ptrdiff_t src_linesize,
120 uint8_t *dst, ptrdiff_t dst_linesize)
121 {
122 3168 transpose_block_24_c(src, src_linesize, dst, dst_linesize, 8, 8);
123 3168 }
124
125 57816 static inline void transpose_block_32_c(uint8_t *src, ptrdiff_t src_linesize,
126 uint8_t *dst, ptrdiff_t dst_linesize,
127 int w, int h)
128 {
129 int x, y;
130
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520344 for (y = 0; y < h; y++, dst += dst_linesize, src += 4) {
131
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132 3700224 *((uint32_t *)(dst + 4*x)) = *((uint32_t *)(src + x*src_linesize));
133 }
134 57816 }
135
136 57816 static void transpose_8x8_32_c(uint8_t *src, ptrdiff_t src_linesize,
137 uint8_t *dst, ptrdiff_t dst_linesize)
138 {
139 57816 transpose_block_32_c(src, src_linesize, dst, dst_linesize, 8, 8);
140 57816 }
141
142 9504 static inline void transpose_block_48_c(uint8_t *src, ptrdiff_t src_linesize,
143 uint8_t *dst, ptrdiff_t dst_linesize,
144 int w, int h)
145 {
146 int x, y;
147
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85536 for (y = 0; y < h; y++, dst += dst_linesize, src += 6) {
148
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684288 for (x = 0; x < w; x++) {
149 608256 int64_t v = AV_RB48(src + x*src_linesize);
150 608256 AV_WB48(dst + 6*x, v);
151 }
152 }
153 9504 }
154
155 9504 static void transpose_8x8_48_c(uint8_t *src, ptrdiff_t src_linesize,
156 uint8_t *dst, ptrdiff_t dst_linesize)
157 {
158 9504 transpose_block_48_c(src, src_linesize, dst, dst_linesize, 8, 8);
159 9504 }
160
161 9504 static inline void transpose_block_64_c(uint8_t *src, ptrdiff_t src_linesize,
162 uint8_t *dst, ptrdiff_t dst_linesize,
163 int w, int h)
164 {
165 int x, y;
166
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167
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684288 for (x = 0; x < w; x++)
168 608256 *((uint64_t *)(dst + 8*x)) = *((uint64_t *)(src + x*src_linesize));
169 9504 }
170
171 9504 static void transpose_8x8_64_c(uint8_t *src, ptrdiff_t src_linesize,
172 uint8_t *dst, ptrdiff_t dst_linesize)
173 {
174 9504 transpose_block_64_c(src, src_linesize, dst, dst_linesize, 8, 8);
175 9504 }
176
177 138 static int config_props_output(AVFilterLink *outlink)
178 {
179 138 AVFilterContext *ctx = outlink->src;
180 138 TransContext *s = ctx->priv;
181 138 AVFilterLink *inlink = ctx->inputs[0];
182 138 const AVPixFmtDescriptor *desc_out = av_pix_fmt_desc_get(outlink->format);
183 138 const AVPixFmtDescriptor *desc_in = av_pix_fmt_desc_get(inlink->format);
184
185
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138 if (s->dir&4) {
186 av_log(ctx, AV_LOG_WARNING,
187 "dir values greater than 3 are deprecated, use the passthrough option instead\n");
188 s->dir &= 3;
189 s->passthrough = TRANSPOSE_PT_TYPE_LANDSCAPE;
190 }
191
192
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138 if ((inlink->w >= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_LANDSCAPE) ||
193
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138 (inlink->w <= inlink->h && s->passthrough == TRANSPOSE_PT_TYPE_PORTRAIT)) {
194 av_log(ctx, AV_LOG_VERBOSE,
195 "w:%d h:%d -> w:%d h:%d (passthrough mode)\n",
196 inlink->w, inlink->h, inlink->w, inlink->h);
197 return 0;
198 } else {
199 138 s->passthrough = TRANSPOSE_PT_TYPE_NONE;
200 }
201
202 138 s->hsub = desc_in->log2_chroma_w;
203 138 s->vsub = desc_in->log2_chroma_h;
204 138 s->planes = av_pix_fmt_count_planes(outlink->format);
205
206
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138 av_assert0(desc_in->nb_components == desc_out->nb_components);
207
208
209 138 av_image_fill_max_pixsteps(s->pixsteps, NULL, desc_out);
210
211 138 outlink->w = inlink->h;
212 138 outlink->h = inlink->w;
213
214
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138 if (inlink->sample_aspect_ratio.num)
215 outlink->sample_aspect_ratio = av_div_q((AVRational) { 1, 1 },
216 inlink->sample_aspect_ratio);
217 else
218 138 outlink->sample_aspect_ratio = inlink->sample_aspect_ratio;
219
220
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690 for (int i = 0; i < 4; i++) {
221 552 TransVtable *v = &s->vtables[i];
222
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552 switch (s->pixsteps[i]) {
223 45 case 1: v->transpose_block = transpose_block_8_c;
224 45 v->transpose_8x8 = transpose_8x8_8_c; break;
225 207 case 2: v->transpose_block = transpose_block_16_c;
226 207 v->transpose_8x8 = transpose_8x8_16_c; break;
227 2 case 3: v->transpose_block = transpose_block_24_c;
228 2 v->transpose_8x8 = transpose_8x8_24_c; break;
229 41 case 4: v->transpose_block = transpose_block_32_c;
230 41 v->transpose_8x8 = transpose_8x8_32_c; break;
231 6 case 6: v->transpose_block = transpose_block_48_c;
232 6 v->transpose_8x8 = transpose_8x8_48_c; break;
233 6 case 8: v->transpose_block = transpose_block_64_c;
234 6 v->transpose_8x8 = transpose_8x8_64_c; break;
235 }
236 }
237
238 #if ARCH_X86
239
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690 for (int i = 0; i < 4; i++) {
240 552 TransVtable *v = &s->vtables[i];
241
242 552 ff_transpose_init_x86(v, s->pixsteps[i]);
243 }
244 #endif
245
246 276 av_log(ctx, AV_LOG_VERBOSE,
247 "w:%d h:%d dir:%d -> w:%d h:%d rotation:%s vflip:%d\n",
248 inlink->w, inlink->h, s->dir, outlink->w, outlink->h,
249
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138 s->dir == 1 || s->dir == 3 ? "clockwise" : "counterclockwise",
250
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138 s->dir == 0 || s->dir == 3);
251 138 return 0;
252 }
253
254 135 static AVFrame *get_video_buffer(AVFilterLink *inlink, int w, int h)
255 {
256 135 TransContext *s = inlink->dst->priv;
257
258 135 return s->passthrough ?
259
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270 ff_null_get_video_buffer (inlink, w, h) :
260 135 ff_default_get_video_buffer(inlink, w, h);
261 }
262
263 typedef struct ThreadData {
264 AVFrame *in, *out;
265 } ThreadData;
266
267 691 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr,
268 int nb_jobs)
269 {
270 691 TransContext *s = ctx->priv;
271 691 ThreadData *td = arg;
272 691 AVFrame *out = td->out;
273 691 AVFrame *in = td->in;
274 int plane;
275
276
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2657 for (plane = 0; plane < s->planes; plane++) {
277
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1966 int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
278
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1966 int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
279 1966 int pixstep = s->pixsteps[plane];
280 1966 int inh = AV_CEIL_RSHIFT(in->height, vsub);
281 1966 int outw = AV_CEIL_RSHIFT(out->width, hsub);
282 1966 int outh = AV_CEIL_RSHIFT(out->height, vsub);
283 1966 int start = (outh * jobnr ) / nb_jobs;
284 1966 int end = (outh * (jobnr+1)) / nb_jobs;
285 uint8_t *dst, *src;
286 int dstlinesize, srclinesize;
287 int x, y;
288 1966 TransVtable *v = &s->vtables[plane];
289
290 1966 dstlinesize = out->linesize[plane];
291 1966 dst = out->data[plane] + start * dstlinesize;
292 1966 src = in->data[plane];
293 1966 srclinesize = in->linesize[plane];
294
295
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1966 if (s->dir & 1) {
296 315 src += in->linesize[plane] * (inh - 1);
297 315 srclinesize *= -1;
298 }
299
300
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1966 if (s->dir & 2) {
301 dst = out->data[plane] + dstlinesize * (outh - start - 1);
302 dstlinesize *= -1;
303 }
304
305
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30382 for (y = start; y < end - 7; y += 8) {
306
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867882 for (x = 0; x < outw - 7; x += 8) {
307 839466 v->transpose_8x8(src + x * srclinesize + y * pixstep,
308 srclinesize,
309 839466 dst + (y - start) * dstlinesize + x * pixstep,
310 dstlinesize);
311 }
312
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28416 if (outw - x > 0 && end - y > 0)
313 v->transpose_block(src + x * srclinesize + y * pixstep,
314 srclinesize,
315 dst + (y - start) * dstlinesize + x * pixstep,
316 dstlinesize, outw - x, end - y);
317 }
318
319
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1966 if (end - y > 0)
320 1300 v->transpose_block(src + 0 * srclinesize + y * pixstep,
321 srclinesize,
322 1300 dst + (y - start) * dstlinesize + 0 * pixstep,
323 dstlinesize, outw, end - y);
324 }
325
326 691 return 0;
327 }
328
329 291 static int filter_frame(AVFilterLink *inlink, AVFrame *in)
330 {
331 291 int err = 0;
332 291 AVFilterContext *ctx = inlink->dst;
333 291 TransContext *s = ctx->priv;
334 291 AVFilterLink *outlink = ctx->outputs[0];
335 ThreadData td;
336 AVFrame *out;
337
338
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291 if (s->passthrough)
339 return ff_filter_frame(outlink, in);
340
341 291 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
342
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291 if (!out) {
343 err = AVERROR(ENOMEM);
344 goto fail;
345 }
346
347 291 err = av_frame_copy_props(out, in);
348
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291 if (err < 0)
349 goto fail;
350
351
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291 if (in->sample_aspect_ratio.num == 0) {
352 291 out->sample_aspect_ratio = in->sample_aspect_ratio;
353 } else {
354 out->sample_aspect_ratio.num = in->sample_aspect_ratio.den;
355 out->sample_aspect_ratio.den = in->sample_aspect_ratio.num;
356 }
357
358 291 td.in = in, td.out = out;
359 291 ff_filter_execute(ctx, filter_slice, &td, NULL,
360
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291 FFMIN(outlink->h, ff_filter_get_nb_threads(ctx)));
361 291 av_frame_free(&in);
362 291 return ff_filter_frame(outlink, out);
363
364 fail:
365 av_frame_free(&in);
366 av_frame_free(&out);
367 return err;
368 }
369
370 #define OFFSET(x) offsetof(TransContext, x)
371 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
372
373 static const AVOption transpose_options[] = {
374 { "dir", "set transpose direction", OFFSET(dir), AV_OPT_TYPE_INT, { .i64 = TRANSPOSE_CCLOCK_FLIP }, 0, 7, FLAGS, "dir" },
375 { "cclock_flip", "rotate counter-clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
376 { "clock", "rotate clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK }, .flags=FLAGS, .unit = "dir" },
377 { "cclock", "rotate counter-clockwise", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CCLOCK }, .flags=FLAGS, .unit = "dir" },
378 { "clock_flip", "rotate clockwise with vertical flip", 0, AV_OPT_TYPE_CONST, { .i64 = TRANSPOSE_CLOCK_FLIP }, .flags=FLAGS, .unit = "dir" },
379
380 { "passthrough", "do not apply transposition if the input matches the specified geometry",
381 OFFSET(passthrough), AV_OPT_TYPE_INT, {.i64=TRANSPOSE_PT_TYPE_NONE}, 0, INT_MAX, FLAGS, "passthrough" },
382 { "none", "always apply transposition", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_NONE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
383 { "portrait", "preserve portrait geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_PORTRAIT}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
384 { "landscape", "preserve landscape geometry", 0, AV_OPT_TYPE_CONST, {.i64=TRANSPOSE_PT_TYPE_LANDSCAPE}, INT_MIN, INT_MAX, FLAGS, "passthrough" },
385
386 { NULL }
387 };
388
389 AVFILTER_DEFINE_CLASS(transpose);
390
391 static const AVFilterPad avfilter_vf_transpose_inputs[] = {
392 {
393 .name = "default",
394 .type = AVMEDIA_TYPE_VIDEO,
395 .get_buffer.video = get_video_buffer,
396 .filter_frame = filter_frame,
397 },
398 };
399
400 static const AVFilterPad avfilter_vf_transpose_outputs[] = {
401 {
402 .name = "default",
403 .config_props = config_props_output,
404 .type = AVMEDIA_TYPE_VIDEO,
405 },
406 };
407
408 const AVFilter ff_vf_transpose = {
409 .name = "transpose",
410 .description = NULL_IF_CONFIG_SMALL("Transpose input video."),
411 .priv_size = sizeof(TransContext),
412 .priv_class = &transpose_class,
413 FILTER_INPUTS(avfilter_vf_transpose_inputs),
414 FILTER_OUTPUTS(avfilter_vf_transpose_outputs),
415 FILTER_QUERY_FUNC(query_formats),
416 .flags = AVFILTER_FLAG_SLICE_THREADS,
417 };
418