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path: root/libavfilter/vf_frei0r.c (plain)
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1/*
2 * Copyright (c) 2010 Stefano Sabatini
3 * This file is part of FFmpeg.
4 *
5 * FFmpeg is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2.1 of the License, or (at your option) any later version.
9 *
10 * FFmpeg is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with FFmpeg; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19
20/**
21 * @file
22 * frei0r wrapper
23 */
24
25#include <dlfcn.h>
26#include <frei0r.h>
27#include <stdio.h>
28#include <string.h>
29#include <stdlib.h>
30#include "config.h"
31#include "libavutil/avstring.h"
32#include "libavutil/common.h"
33#include "libavutil/eval.h"
34#include "libavutil/imgutils.h"
35#include "libavutil/internal.h"
36#include "libavutil/mathematics.h"
37#include "libavutil/mem.h"
38#include "libavutil/opt.h"
39#include "libavutil/parseutils.h"
40#include "avfilter.h"
41#include "formats.h"
42#include "internal.h"
43#include "video.h"
44
45typedef f0r_instance_t (*f0r_construct_f)(unsigned int width, unsigned int height);
46typedef void (*f0r_destruct_f)(f0r_instance_t instance);
47typedef void (*f0r_deinit_f)(void);
48typedef int (*f0r_init_f)(void);
49typedef void (*f0r_get_plugin_info_f)(f0r_plugin_info_t *info);
50typedef void (*f0r_get_param_info_f)(f0r_param_info_t *info, int param_index);
51typedef void (*f0r_update_f)(f0r_instance_t instance, double time, const uint32_t *inframe, uint32_t *outframe);
52typedef void (*f0r_update2_f)(f0r_instance_t instance, double time, const uint32_t *inframe1, const uint32_t *inframe2, const uint32_t *inframe3, uint32_t *outframe);
53typedef void (*f0r_set_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index);
54typedef void (*f0r_get_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index);
55
56typedef struct Frei0rContext {
57 const AVClass *class;
58 f0r_update_f update;
59 void *dl_handle; /* dynamic library handle */
60 f0r_instance_t instance;
61 f0r_plugin_info_t plugin_info;
62
63 f0r_get_param_info_f get_param_info;
64 f0r_get_param_value_f get_param_value;
65 f0r_set_param_value_f set_param_value;
66 f0r_construct_f construct;
67 f0r_destruct_f destruct;
68 f0r_deinit_f deinit;
69
70 char *dl_name;
71 char *params;
72 AVRational framerate;
73
74 /* only used by the source */
75 int w, h;
76 AVRational time_base;
77 uint64_t pts;
78} Frei0rContext;
79
80static void *load_sym(AVFilterContext *ctx, const char *sym_name)
81{
82 Frei0rContext *s = ctx->priv;
83 void *sym = dlsym(s->dl_handle, sym_name);
84 if (!sym)
85 av_log(ctx, AV_LOG_ERROR, "Could not find symbol '%s' in loaded module.\n", sym_name);
86 return sym;
87}
88
89static int set_param(AVFilterContext *ctx, f0r_param_info_t info, int index, char *param)
90{
91 Frei0rContext *s = ctx->priv;
92 union {
93 double d;
94 f0r_param_color_t col;
95 f0r_param_position_t pos;
96 } val;
97 char *tail;
98 uint8_t rgba[4];
99
100 switch (info.type) {
101 case F0R_PARAM_BOOL:
102 if (!strcmp(param, "y")) val.d = 1.0;
103 else if (!strcmp(param, "n")) val.d = 0.0;
104 else goto fail;
105 break;
106
107 case F0R_PARAM_DOUBLE:
108 val.d = av_strtod(param, &tail);
109 if (*tail || val.d == HUGE_VAL)
110 goto fail;
111 break;
112
113 case F0R_PARAM_COLOR:
114 if (sscanf(param, "%f/%f/%f", &val.col.r, &val.col.g, &val.col.b) != 3) {
115 if (av_parse_color(rgba, param, -1, ctx) < 0)
116 goto fail;
117 val.col.r = rgba[0] / 255.0;
118 val.col.g = rgba[1] / 255.0;
119 val.col.b = rgba[2] / 255.0;
120 }
121 break;
122
123 case F0R_PARAM_POSITION:
124 if (sscanf(param, "%lf/%lf", &val.pos.x, &val.pos.y) != 2)
125 goto fail;
126 break;
127 }
128
129 s->set_param_value(s->instance, &val, index);
130 return 0;
131
132fail:
133 av_log(ctx, AV_LOG_ERROR, "Invalid value '%s' for parameter '%s'.\n",
134 param, info.name);
135 return AVERROR(EINVAL);
136}
137
138static int set_params(AVFilterContext *ctx, const char *params)
139{
140 Frei0rContext *s = ctx->priv;
141 int i;
142
143 if (!params)
144 return 0;
145
146 for (i = 0; i < s->plugin_info.num_params; i++) {
147 f0r_param_info_t info;
148 char *param;
149 int ret;
150
151 s->get_param_info(&info, i);
152
153 if (*params) {
154 if (!(param = av_get_token(&params, "|")))
155 return AVERROR(ENOMEM);
156 if (*params)
157 params++; /* skip ':' */
158 ret = set_param(ctx, info, i, param);
159 av_free(param);
160 if (ret < 0)
161 return ret;
162 }
163 }
164
165 return 0;
166}
167
168static int load_path(AVFilterContext *ctx, void **handle_ptr, const char *prefix, const char *name)
169{
170 char *path = av_asprintf("%s%s%s", prefix, name, SLIBSUF);
171 if (!path)
172 return AVERROR(ENOMEM);
173 av_log(ctx, AV_LOG_DEBUG, "Looking for frei0r effect in '%s'.\n", path);
174 *handle_ptr = dlopen(path, RTLD_NOW|RTLD_LOCAL);
175 av_free(path);
176 return 0;
177}
178
179static av_cold int frei0r_init(AVFilterContext *ctx,
180 const char *dl_name, int type)
181{
182 Frei0rContext *s = ctx->priv;
183 f0r_init_f f0r_init;
184 f0r_get_plugin_info_f f0r_get_plugin_info;
185 f0r_plugin_info_t *pi;
186 char *path;
187 int ret = 0;
188 int i;
189 static const char* const frei0r_pathlist[] = {
190 "/usr/local/lib/frei0r-1/",
191 "/usr/lib/frei0r-1/",
192 "/usr/local/lib64/frei0r-1/",
193 "/usr/lib64/frei0r-1/"
194 };
195
196 if (!dl_name) {
197 av_log(ctx, AV_LOG_ERROR, "No filter name provided.\n");
198 return AVERROR(EINVAL);
199 }
200
201 /* see: http://frei0r.dyne.org/codedoc/html/group__pluglocations.html */
202 if ((path = av_strdup(getenv("FREI0R_PATH")))) {
203#ifdef _WIN32
204 const char *separator = ";";
205#else
206 const char *separator = ":";
207#endif
208 char *p, *ptr = NULL;
209 for (p = path; p = av_strtok(p, separator, &ptr); p = NULL) {
210 /* add additional trailing slash in case it is missing */
211 char *p1 = av_asprintf("%s/", p);
212 if (!p1) {
213 ret = AVERROR(ENOMEM);
214 goto check_path_end;
215 }
216 ret = load_path(ctx, &s->dl_handle, p1, dl_name);
217 av_free(p1);
218 if (ret < 0)
219 goto check_path_end;
220 if (s->dl_handle)
221 break;
222 }
223
224 check_path_end:
225 av_free(path);
226 if (ret < 0)
227 return ret;
228 }
229 if (!s->dl_handle && (path = getenv("HOME"))) {
230 char *prefix = av_asprintf("%s/.frei0r-1/lib/", path);
231 if (!prefix)
232 return AVERROR(ENOMEM);
233 ret = load_path(ctx, &s->dl_handle, prefix, dl_name);
234 av_free(prefix);
235 if (ret < 0)
236 return ret;
237 }
238 for (i = 0; !s->dl_handle && i < FF_ARRAY_ELEMS(frei0r_pathlist); i++) {
239 ret = load_path(ctx, &s->dl_handle, frei0r_pathlist[i], dl_name);
240 if (ret < 0)
241 return ret;
242 }
243 if (!s->dl_handle) {
244 av_log(ctx, AV_LOG_ERROR, "Could not find module '%s'.\n", dl_name);
245 return AVERROR(EINVAL);
246 }
247
248 if (!(f0r_init = load_sym(ctx, "f0r_init" )) ||
249 !(f0r_get_plugin_info = load_sym(ctx, "f0r_get_plugin_info")) ||
250 !(s->get_param_info = load_sym(ctx, "f0r_get_param_info" )) ||
251 !(s->get_param_value = load_sym(ctx, "f0r_get_param_value")) ||
252 !(s->set_param_value = load_sym(ctx, "f0r_set_param_value")) ||
253 !(s->update = load_sym(ctx, "f0r_update" )) ||
254 !(s->construct = load_sym(ctx, "f0r_construct" )) ||
255 !(s->destruct = load_sym(ctx, "f0r_destruct" )) ||
256 !(s->deinit = load_sym(ctx, "f0r_deinit" )))
257 return AVERROR(EINVAL);
258
259 if (f0r_init() < 0) {
260 av_log(ctx, AV_LOG_ERROR, "Could not init the frei0r module.\n");
261 return AVERROR(EINVAL);
262 }
263
264 f0r_get_plugin_info(&s->plugin_info);
265 pi = &s->plugin_info;
266 if (pi->plugin_type != type) {
267 av_log(ctx, AV_LOG_ERROR,
268 "Invalid type '%s' for this plugin\n",
269 pi->plugin_type == F0R_PLUGIN_TYPE_FILTER ? "filter" :
270 pi->plugin_type == F0R_PLUGIN_TYPE_SOURCE ? "source" :
271 pi->plugin_type == F0R_PLUGIN_TYPE_MIXER2 ? "mixer2" :
272 pi->plugin_type == F0R_PLUGIN_TYPE_MIXER3 ? "mixer3" : "unknown");
273 return AVERROR(EINVAL);
274 }
275
276 av_log(ctx, AV_LOG_VERBOSE,
277 "name:%s author:'%s' explanation:'%s' color_model:%s "
278 "frei0r_version:%d version:%d.%d num_params:%d\n",
279 pi->name, pi->author, pi->explanation,
280 pi->color_model == F0R_COLOR_MODEL_BGRA8888 ? "bgra8888" :
281 pi->color_model == F0R_COLOR_MODEL_RGBA8888 ? "rgba8888" :
282 pi->color_model == F0R_COLOR_MODEL_PACKED32 ? "packed32" : "unknown",
283 pi->frei0r_version, pi->major_version, pi->minor_version, pi->num_params);
284
285 return 0;
286}
287
288static av_cold int filter_init(AVFilterContext *ctx)
289{
290 Frei0rContext *s = ctx->priv;
291
292 return frei0r_init(ctx, s->dl_name, F0R_PLUGIN_TYPE_FILTER);
293}
294
295static av_cold void uninit(AVFilterContext *ctx)
296{
297 Frei0rContext *s = ctx->priv;
298
299 if (s->destruct && s->instance)
300 s->destruct(s->instance);
301 if (s->deinit)
302 s->deinit();
303 if (s->dl_handle)
304 dlclose(s->dl_handle);
305}
306
307static int config_input_props(AVFilterLink *inlink)
308{
309 AVFilterContext *ctx = inlink->dst;
310 Frei0rContext *s = ctx->priv;
311
312 if (s->destruct && s->instance)
313 s->destruct(s->instance);
314 if (!(s->instance = s->construct(inlink->w, inlink->h))) {
315 av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance.\n");
316 return AVERROR(EINVAL);
317 }
318
319 return set_params(ctx, s->params);
320}
321
322static int query_formats(AVFilterContext *ctx)
323{
324 Frei0rContext *s = ctx->priv;
325 AVFilterFormats *formats = NULL;
326 int ret;
327
328 if (s->plugin_info.color_model == F0R_COLOR_MODEL_BGRA8888) {
329 if ((ret = ff_add_format(&formats, AV_PIX_FMT_BGRA)) < 0)
330 return ret;
331 } else if (s->plugin_info.color_model == F0R_COLOR_MODEL_RGBA8888) {
332 if ((ret = ff_add_format(&formats, AV_PIX_FMT_RGBA)) < 0)
333 return ret;
334 } else { /* F0R_COLOR_MODEL_PACKED32 */
335 static const enum AVPixelFormat pix_fmts[] = {
336 AV_PIX_FMT_BGRA, AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_ARGB, AV_PIX_FMT_NONE
337 };
338 formats = ff_make_format_list(pix_fmts);
339 }
340
341 if (!formats)
342 return AVERROR(ENOMEM);
343
344 return ff_set_common_formats(ctx, formats);
345}
346
347static int filter_frame(AVFilterLink *inlink, AVFrame *in)
348{
349 Frei0rContext *s = inlink->dst->priv;
350 AVFilterLink *outlink = inlink->dst->outputs[0];
351 AVFrame *out;
352
353 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
354 if (!out) {
355 av_frame_free(&in);
356 return AVERROR(ENOMEM);
357 }
358 av_frame_copy_props(out, in);
359
360 s->update(s->instance, in->pts * av_q2d(inlink->time_base) * 1000,
361 (const uint32_t *)in->data[0],
362 (uint32_t *)out->data[0]);
363
364 av_frame_free(&in);
365
366 return ff_filter_frame(outlink, out);
367}
368
369#define OFFSET(x) offsetof(Frei0rContext, x)
370#define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
371static const AVOption frei0r_options[] = {
372 { "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
373 { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS },
374 { NULL }
375};
376
377AVFILTER_DEFINE_CLASS(frei0r);
378
379static const AVFilterPad avfilter_vf_frei0r_inputs[] = {
380 {
381 .name = "default",
382 .type = AVMEDIA_TYPE_VIDEO,
383 .config_props = config_input_props,
384 .filter_frame = filter_frame,
385 },
386 { NULL }
387};
388
389static const AVFilterPad avfilter_vf_frei0r_outputs[] = {
390 {
391 .name = "default",
392 .type = AVMEDIA_TYPE_VIDEO,
393 },
394 { NULL }
395};
396
397AVFilter ff_vf_frei0r = {
398 .name = "frei0r",
399 .description = NULL_IF_CONFIG_SMALL("Apply a frei0r effect."),
400 .query_formats = query_formats,
401 .init = filter_init,
402 .uninit = uninit,
403 .priv_size = sizeof(Frei0rContext),
404 .priv_class = &frei0r_class,
405 .inputs = avfilter_vf_frei0r_inputs,
406 .outputs = avfilter_vf_frei0r_outputs,
407};
408
409static av_cold int source_init(AVFilterContext *ctx)
410{
411 Frei0rContext *s = ctx->priv;
412
413 s->time_base.num = s->framerate.den;
414 s->time_base.den = s->framerate.num;
415
416 return frei0r_init(ctx, s->dl_name, F0R_PLUGIN_TYPE_SOURCE);
417}
418
419static int source_config_props(AVFilterLink *outlink)
420{
421 AVFilterContext *ctx = outlink->src;
422 Frei0rContext *s = ctx->priv;
423
424 if (av_image_check_size(s->w, s->h, 0, ctx) < 0)
425 return AVERROR(EINVAL);
426 outlink->w = s->w;
427 outlink->h = s->h;
428 outlink->time_base = s->time_base;
429 outlink->frame_rate = av_inv_q(s->time_base);
430 outlink->sample_aspect_ratio = (AVRational){1,1};
431
432 if (s->destruct && s->instance)
433 s->destruct(s->instance);
434 if (!(s->instance = s->construct(outlink->w, outlink->h))) {
435 av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance.\n");
436 return AVERROR(EINVAL);
437 }
438 if (!s->params) {
439 av_log(ctx, AV_LOG_ERROR, "frei0r filter parameters not set.\n");
440 return AVERROR(EINVAL);
441 }
442
443 return set_params(ctx, s->params);
444}
445
446static int source_request_frame(AVFilterLink *outlink)
447{
448 Frei0rContext *s = outlink->src->priv;
449 AVFrame *frame = ff_get_video_buffer(outlink, outlink->w, outlink->h);
450
451 if (!frame)
452 return AVERROR(ENOMEM);
453
454 frame->sample_aspect_ratio = (AVRational) {1, 1};
455 frame->pts = s->pts++;
456
457 s->update(s->instance, av_rescale_q(frame->pts, s->time_base, (AVRational){1,1000}),
458 NULL, (uint32_t *)frame->data[0]);
459
460 return ff_filter_frame(outlink, frame);
461}
462
463static const AVOption frei0r_src_options[] = {
464 { "size", "Dimensions of the generated video.", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, { .str = "320x240" }, .flags = FLAGS },
465 { "framerate", NULL, OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 0, INT_MAX, .flags = FLAGS },
466 { "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
467 { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS },
468 { NULL },
469};
470
471AVFILTER_DEFINE_CLASS(frei0r_src);
472
473static const AVFilterPad avfilter_vsrc_frei0r_src_outputs[] = {
474 {
475 .name = "default",
476 .type = AVMEDIA_TYPE_VIDEO,
477 .request_frame = source_request_frame,
478 .config_props = source_config_props
479 },
480 { NULL }
481};
482
483AVFilter ff_vsrc_frei0r_src = {
484 .name = "frei0r_src",
485 .description = NULL_IF_CONFIG_SMALL("Generate a frei0r source."),
486 .priv_size = sizeof(Frei0rContext),
487 .priv_class = &frei0r_src_class,
488 .init = source_init,
489 .uninit = uninit,
490 .query_formats = query_formats,
491 .inputs = NULL,
492 .outputs = avfilter_vsrc_frei0r_src_outputs,
493};
494
generated by cgit at 2024-05-17 02:01:33 (GMT)