FFmpeg: libavfilter/vf_frei0r.c Source File

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libavfilter

vf_frei0r.c

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1 /*

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 */

20 /**

21 * @file

22 * frei0r wrapper

23 */

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/imgutils.h"

33 #include "libavutil/internal.h"

34 #include "libavutil/mathematics.h"

35 #include "libavutil/mem.h"

36 #include "libavutil/opt.h"

37 #include "libavutil/parseutils.h"

38 #include "avfilter.h"

39 #include "formats.h"

40 #include "internal.h"

41 #include "video.h"

43 typedef f0r_instance_t (*f0r_construct_f)(unsigned int width, unsigned int height);

44 typedef void (*f0r_destruct_f)(f0r_instance_t instance);

45 typedef void (*f0r_deinit_f)(void);

46 typedef int (*f0r_init_f)(void);

47 typedef void (*f0r_get_plugin_info_f)(f0r_plugin_info_t *info);

48 typedef void (*f0r_get_param_info_f)(f0r_param_info_t *info, int param_index);

49 typedef void (*f0r_update_f)(f0r_instance_t instance, double time, const uint32_t *inframe, uint32_t *outframe);

50 typedef 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);

51 typedef void (*f0r_set_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index);

52 typedef void (*f0r_get_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index);

54 typedef struct Frei0rContext {

55 const AVClass *class;

56 f0r_update_f update;

57 void *dl_handle; /* dynamic library handle */

58 f0r_instance_t instance;

59 f0r_plugin_info_t plugin_info;

61 f0r_get_param_info_f get_param_info;

62 f0r_get_param_value_f get_param_value;

63 f0r_set_param_value_f set_param_value;

64 f0r_construct_f construct;

65 f0r_destruct_f destruct;

66 f0r_deinit_f deinit;

68 char *dl_name;

69 char *params;

70 char *size;

71 char *framerate;

73 /* only used by the source */

74 int w, h;

75 AVRational time_base;

76 uint64_t pts;

77 } Frei0rContext;

79 static void *load_sym(AVFilterContext *ctx, const char *sym_name)

80 {

81 Frei0rContext *s = ctx->priv;

82 void *sym = dlsym(s->dl_handle, sym_name);

83 if (!sym)

84 av_log(ctx, AV_LOG_ERROR, "Could not find symbol '%s' in loaded module\n", sym_name);

85 return sym;

86 }

88 static int set_param(AVFilterContext *ctx, f0r_param_info_t info, int index, char *param)

89 {

90 Frei0rContext *s = ctx->priv;

91 union {

92 double d;

93 f0r_param_color_t col;

94 f0r_param_position_t pos;

95 } val;

96 char *tail;

97 uint8_t rgba[4];

99 switch (info.type) {

100 case F0R_PARAM_BOOL:

101 if (!strcmp(param, "y")) val.d = 1.0;

102 else if (!strcmp(param, "n")) val.d = 0.0;

103 else goto fail;

104 break;

105

106 case F0R_PARAM_DOUBLE:

107 val.d = strtod(param, &tail);

108 if (*tail || val.d == HUGE_VAL)

109 goto fail;

110 break;

111

112 case F0R_PARAM_COLOR:

113 if (sscanf(param, "%f/%f/%f", &val.col.r, &val.col.g, &val.col.b) != 3) {

114 if (av_parse_color(rgba, param, -1, ctx) < 0)

115 goto fail;

116 val.col.r = rgba[0] / 255.0;

117 val.col.g = rgba[1] / 255.0;

118 val.col.b = rgba[2] / 255.0;

119 }

120 break;

121

122 case F0R_PARAM_POSITION:

123 if (sscanf(param, "%lf/%lf", &val.pos.x, &val.pos.y) != 2)

124 goto fail;

125 break;

126 }

127

128 s->set_param_value(s->instance, &val, index);

129 return 0;

130

131 fail:

132 av_log(ctx, AV_LOG_ERROR, "Invalid value '%s' for parameter '%s'\n",

133 param, info.name);

134 return AVERROR(EINVAL);

135 }

136

137 static int set_params(AVFilterContext *ctx, const char *params)

138 {

139 Frei0rContext *s = ctx->priv;

140 int i;

141

142 if (!params)

143 return 0;

144

145 for (i = 0; i < s->plugin_info.num_params; i++) {

146 f0r_param_info_t info;

147 char *param;

148 int ret;

149

150 s->get_param_info(&info, i);

151

152 if (*params) {

153 if (!(param = av_get_token(&params, "|")))

154 return AVERROR(ENOMEM);

155 params++; /* skip ':' */

156 ret = set_param(ctx, info, i, param);

157 av_free(param);

158 if (ret < 0)

159 return ret;

160 }

161

162 av_log(ctx, AV_LOG_VERBOSE,

163 "idx:%d name:'%s' type:%s explanation:'%s' ",

164 i, info.name,

165 info.type == F0R_PARAM_BOOL ? "bool" :

166 info.type == F0R_PARAM_DOUBLE ? "double" :

167 info.type == F0R_PARAM_COLOR ? "color" :

168 info.type == F0R_PARAM_POSITION ? "position" :

169 info.type == F0R_PARAM_STRING ? "string" : "unknown",

170 info.explanation);

171

172 #ifdef DEBUG

173 av_log(ctx, AV_LOG_DEBUG, "value:");

174 switch (info.type) {

175 void *v;

176 double d;

177 char s[128];

178 f0r_param_color_t col;

179 f0r_param_position_t pos;

180

181 case F0R_PARAM_BOOL:

182 v = &d;

183 s->get_param_value(s->instance, v, i);

184 av_log(ctx, AV_LOG_DEBUG, "%s", d >= 0.5 && d <= 1.0 ? "y" : "n");

185 break;

186 case F0R_PARAM_DOUBLE:

187 v = &d;

188 s->get_param_value(s->instance, v, i);

189 av_log(ctx, AV_LOG_DEBUG, "%f", d);

190 break;

191 case F0R_PARAM_COLOR:

192 v = &col;

193 s->get_param_value(s->instance, v, i);

194 av_log(ctx, AV_LOG_DEBUG, "%f/%f/%f", col.r, col.g, col.b);

195 break;

196 case F0R_PARAM_POSITION:

197 v = &pos;

198 s->get_param_value(s->instance, v, i);

199 av_log(ctx, AV_LOG_DEBUG, "%f/%f", pos.x, pos.y);

200 break;

201 default: /* F0R_PARAM_STRING */

202 v = s;

203 s->get_param_value(s->instance, v, i);

204 av_log(ctx, AV_LOG_DEBUG, "'%s'\n", s);

205 break;

206 }

207 #endif

208 av_log(ctx, AV_LOG_VERBOSE, "\n");

209 }

210

211 return 0;

212 }

213

214 static int load_path(AVFilterContext *ctx, void **handle_ptr, const char *prefix, const char *name)

215 {

216 char *path = av_asprintf("%s%s%s", prefix, name, SLIBSUF);

217 if (!path)

218 return AVERROR(ENOMEM);

219 av_log(ctx, AV_LOG_DEBUG, "Looking for frei0r effect in '%s'\n", path);

220 *handle_ptr = dlopen(path, RTLD_NOW|RTLD_LOCAL);

221 av_free(path);

222 return 0;

223 }

224

225 static av_cold int frei0r_init(AVFilterContext *ctx,

226 const char *dl_name, int type)

227 {

228 Frei0rContext *s = ctx->priv;

229 f0r_init_f f0r_init;

230 f0r_get_plugin_info_f f0r_get_plugin_info;

231 f0r_plugin_info_t *pi;

232 char *path;

233 int ret = 0;

234

235 if (!dl_name) {

236 av_log(ctx, AV_LOG_ERROR, "No filter name provided.\n");

237 return AVERROR(EINVAL);

238 }

239

240 /* see: http://frei0r.dyne.org/codedoc/html/group__pluglocations.html */

241 if ((path = av_strdup(getenv("FREI0R_PATH")))) {

242 #ifdef _WIN32

243 const char *separator = ";";

244 #else

245 const char *separator = ":";

246 #endif

247 char *p, *ptr = NULL;

248 for (p = path; p = av_strtok(p, separator, &ptr); p = NULL) {

249 /* add additional trailing slash in case it is missing */

250 char *p1 = av_asprintf("%s/", p);

251 if (!p1) {

252 ret = AVERROR(ENOMEM);

253 goto check_path_end;

254 }

255 ret = load_path(ctx, &s->dl_handle, p1, dl_name);

256 av_free(p1);

257 if (ret < 0)

258 goto check_path_end;

259 if (s->dl_handle)

260 break;

261 }

262

263 check_path_end:

264 av_free(path);

265 if (ret < 0)

266 return ret;

267 }

268 if (!s->dl_handle && (path = getenv("HOME"))) {

269 char *prefix = av_asprintf("%s/.frei0r-1/lib/", path);

270 if (!prefix)

271 return AVERROR(ENOMEM);

272 ret = load_path(ctx, &s->dl_handle, prefix, dl_name);

273 av_free(prefix);

274 if (ret < 0)

275 return ret;

276 }

277 if (!s->dl_handle) {

278 ret = load_path(ctx, &s->dl_handle, "/usr/local/lib/frei0r-1/", dl_name);

279 if (ret < 0)

280 return ret;

281 }

282 if (!s->dl_handle) {

283 ret = load_path(ctx, &s->dl_handle, "/usr/lib/frei0r-1/", dl_name);

284 if (ret < 0)

285 return ret;

286 }

287 if (!s->dl_handle) {

288 av_log(ctx, AV_LOG_ERROR, "Could not find module '%s'\n", dl_name);

289 return AVERROR(EINVAL);

290 }

291

292 if (!(f0r_init = load_sym(ctx, "f0r_init" )) ||

293 !(f0r_get_plugin_info = load_sym(ctx, "f0r_get_plugin_info")) ||

294 !(s->get_param_info = load_sym(ctx, "f0r_get_param_info" )) ||

295 !(s->get_param_value = load_sym(ctx, "f0r_get_param_value")) ||

296 !(s->set_param_value = load_sym(ctx, "f0r_set_param_value")) ||

297 !(s->update = load_sym(ctx, "f0r_update" )) ||

298 !(s->construct = load_sym(ctx, "f0r_construct" )) ||

299 !(s->destruct = load_sym(ctx, "f0r_destruct" )) ||

300 !(s->deinit = load_sym(ctx, "f0r_deinit" )))

301 return AVERROR(EINVAL);

302

303 if (f0r_init() < 0) {

304 av_log(ctx, AV_LOG_ERROR, "Could not init the frei0r module\n");

305 return AVERROR(EINVAL);

306 }

307

308 f0r_get_plugin_info(&s->plugin_info);

309 pi = &s->plugin_info;

310 if (pi->plugin_type != type) {

311 av_log(ctx, AV_LOG_ERROR,

312 "Invalid type '%s' for the plugin\n",

313 pi->plugin_type == F0R_PLUGIN_TYPE_FILTER ? "filter" :

314 pi->plugin_type == F0R_PLUGIN_TYPE_SOURCE ? "source" :

315 pi->plugin_type == F0R_PLUGIN_TYPE_MIXER2 ? "mixer2" :

316 pi->plugin_type == F0R_PLUGIN_TYPE_MIXER3 ? "mixer3" : "unknown");

317 return AVERROR(EINVAL);

318 }

319

320 av_log(ctx, AV_LOG_VERBOSE,

321 "name:%s author:'%s' explanation:'%s' color_model:%s "

322 "frei0r_version:%d version:%d.%d num_params:%d\n",

323 pi->name, pi->author, pi->explanation,

324 pi->color_model == F0R_COLOR_MODEL_BGRA8888 ? "bgra8888" :

325 pi->color_model == F0R_COLOR_MODEL_RGBA8888 ? "rgba8888" :

326 pi->color_model == F0R_COLOR_MODEL_PACKED32 ? "packed32" : "unknown",

327 pi->frei0r_version, pi->major_version, pi->minor_version, pi->num_params);

328

329 return 0;

330 }

331

332 static av_cold int filter_init(AVFilterContext *ctx)

333 {

334 Frei0rContext *s = ctx->priv;

335

336 return frei0r_init(ctx, s->dl_name, F0R_PLUGIN_TYPE_FILTER);

337 }

338

339 static av_cold void uninit(AVFilterContext *ctx)

340 {

341 Frei0rContext *s = ctx->priv;

342

343 if (s->destruct && s->instance)

344 s->destruct(s->instance);

345 if (s->deinit)

346 s->deinit();

347 if (s->dl_handle)

348 dlclose(s->dl_handle);

349 }

350

351 static int config_input_props(AVFilterLink *inlink)

352 {

353 AVFilterContext *ctx = inlink->dst;

354 Frei0rContext *s = ctx->priv;

355

356 if (s->destruct && s->instance)

357 s->destruct(s->instance);

358 if (!(s->instance = s->construct(inlink->w, inlink->h))) {

359 av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance\n");

360 return AVERROR(EINVAL);

361 }

362

363 return set_params(ctx, s->params);

364 }

365

366 static int query_formats(AVFilterContext *ctx)

367 {

368 Frei0rContext *s = ctx->priv;

369 AVFilterFormats *formats = NULL;

370

371 if (s->plugin_info.color_model == F0R_COLOR_MODEL_BGRA8888) {

372 ff_add_format(&formats, AV_PIX_FMT_BGRA);

373 } else if (s->plugin_info.color_model == F0R_COLOR_MODEL_RGBA8888) {

374 ff_add_format(&formats, AV_PIX_FMT_RGBA);

375 } else { /* F0R_COLOR_MODEL_PACKED32 */

376 static const enum AVPixelFormat pix_fmts[] = {

377 AV_PIX_FMT_BGRA, AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_ARGB, AV_PIX_FMT_NONE

378 };

379 formats = ff_make_format_list(pix_fmts);

380 }

381

382 if (!formats)

383 return AVERROR(ENOMEM);

384

385 ff_set_common_formats(ctx, formats);

386 return 0;

387 }

388

389 static int filter_frame(AVFilterLink *inlink, AVFrame *in)

390 {

391 Frei0rContext *s = inlink->dst->priv;

392 AVFilterLink *outlink = inlink->dst->outputs[0];

393 AVFrame *out;

394

395 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);

396 if (!out) {

397 av_frame_free(&in);

398 return AVERROR(ENOMEM);

399 }

400 av_frame_copy_props(out, in);

401

402 s->update(s->instance, in->pts * av_q2d(inlink->time_base) * 1000,

403 (const uint32_t *)in->data[0],

404 (uint32_t *)out->data[0]);

405

406 av_frame_free(&in);

407

408 return ff_filter_frame(outlink, out);

409 }

410

411 #define OFFSET(x) offsetof(Frei0rContext, x)

412 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM

413 static const AVOption frei0r_options[] = {

414 { "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },

415 { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS },

416 { NULL },

417 };

418

419 AVFILTER_DEFINE_CLASS(frei0r);

420

421 static const AVFilterPad avfilter_vf_frei0r_inputs[] = {

422 {

423 .name = "default",

424 .type = AVMEDIA_TYPE_VIDEO,

425 .config_props = config_input_props,

426 .filter_frame = filter_frame,

427 },

428 { NULL }

429 };

430

431 static const AVFilterPad avfilter_vf_frei0r_outputs[] = {

432 {

433 .name = "default",

434 .type = AVMEDIA_TYPE_VIDEO,

435 },

436 { NULL }

437 };

438

439 AVFilter avfilter_vf_frei0r = {

440 .name = "frei0r",

441 .description = NULL_IF_CONFIG_SMALL("Apply a frei0r effect."),

442

443 .query_formats = query_formats,

444 .init = filter_init,

445 .uninit = uninit,

446

447 .priv_size = sizeof(Frei0rContext),

448 .priv_class = &frei0r_class,

449

450 .inputs = avfilter_vf_frei0r_inputs,

451

452 .outputs = avfilter_vf_frei0r_outputs,

453 };

454

455 static av_cold int source_init(AVFilterContext *ctx)

456 {

457 Frei0rContext *s = ctx->priv;

458 AVRational frame_rate_q;

459

460 if (av_parse_video_size(&s->w, &s->h, s->size) < 0) {

461 av_log(ctx, AV_LOG_ERROR, "Invalid frame size: '%s'\n", s->size);

462 return AVERROR(EINVAL);

463 }

464

465 if (av_parse_video_rate(&frame_rate_q, s->framerate) < 0) {

466 av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", s->framerate);

467 return AVERROR(EINVAL);

468 }

469 s->time_base.num = frame_rate_q.den;

470 s->time_base.den = frame_rate_q.num;

471

472 return frei0r_init(ctx, s->dl_name, F0R_PLUGIN_TYPE_SOURCE);

473 }

474

475 static int source_config_props(AVFilterLink *outlink)

476 {

477 AVFilterContext *ctx = outlink->src;

478 Frei0rContext *s = ctx->priv;

479

480 if (av_image_check_size(s->w, s->h, 0, ctx) < 0)

481 return AVERROR(EINVAL);

482 outlink->w = s->w;

483 outlink->h = s->h;

484 outlink->time_base = s->time_base;

485 outlink->sample_aspect_ratio = (AVRational){1,1};

486

487 if (s->destruct && s->instance)

488 s->destruct(s->instance);

489 if (!(s->instance = s->construct(outlink->w, outlink->h))) {

490 av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance\n");

491 return AVERROR(EINVAL);

492 }

493

494 return set_params(ctx, s->params);

495 }

496

497 static int source_request_frame(AVFilterLink *outlink)

498 {

499 Frei0rContext *s = outlink->src->priv;

500 AVFrame *frame = ff_get_video_buffer(outlink, outlink->w, outlink->h);

501

502 if (!frame)

503 return AVERROR(ENOMEM);

504

505 frame->sample_aspect_ratio = (AVRational) {1, 1};

506 frame->pts = s->pts++;

507

508 s->update(s->instance, av_rescale_q(frame->pts, s->time_base, (AVRational){1,1000}),

509 NULL, (uint32_t *)frame->data[0]);

510

511 return ff_filter_frame(outlink, frame);

512 }

513

514 static const AVOption frei0r_src_options[] = {

515 { "size", "Dimensions of the generated video.", OFFSET(size), AV_OPT_TYPE_STRING, { .str = "" }, .flags = FLAGS },

516 { "framerate", NULL, OFFSET(framerate), AV_OPT_TYPE_STRING, { .str = "25" }, .flags = FLAGS },

517 { "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },

518 { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS },

519 { NULL },

520 };

521

522 AVFILTER_DEFINE_CLASS(frei0r_src);

523

524 static const AVFilterPad avfilter_vsrc_frei0r_src_outputs[] = {

525 {

526 .name = "default",

527 .type = AVMEDIA_TYPE_VIDEO,

528 .request_frame = source_request_frame,

529 .config_props = source_config_props

530 },

531 { NULL }

532 };

533

534 AVFilter avfilter_vsrc_frei0r_src = {

535 .name = "frei0r_src",

536 .description = NULL_IF_CONFIG_SMALL("Generate a frei0r source."),

537

538 .priv_size = sizeof(Frei0rContext),

539 .priv_class = &frei0r_src_class,

540 .init = source_init,

541 .uninit = uninit,

542

543 .query_formats = query_formats,

544

545 .inputs = NULL,

546

547 .outputs = avfilter_vsrc_frei0r_src_outputs,

548 };

Generated on Wed Jul 10 2013 23:48:10 for FFmpeg by doxygen 1.8.2