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00027 #include <dlfcn.h>
00028 #include <frei0r.h>
00029 #include "libavutil/avstring.h"
00030 #include "libavutil/imgutils.h"
00031 #include "libavutil/parseutils.h"
00032 #include "avfilter.h"
00033
00034 typedef f0r_instance_t (*f0r_construct_f)(unsigned int width, unsigned int height);
00035 typedef void (*f0r_destruct_f)(f0r_instance_t instance);
00036 typedef void (*f0r_deinit_f)(void);
00037 typedef int (*f0r_init_f)(void);
00038 typedef void (*f0r_get_plugin_info_f)(f0r_plugin_info_t *info);
00039 typedef void (*f0r_get_param_info_f)(f0r_param_info_t *info, int param_index);
00040 typedef void (*f0r_update_f)(f0r_instance_t instance, double time, const uint32_t *inframe, uint32_t *outframe);
00041 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);
00042 typedef void (*f0r_set_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index);
00043 typedef void (*f0r_get_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index);
00044
00045 typedef struct Frei0rContext {
00046 f0r_update_f update;
00047 void *dl_handle;
00048 f0r_instance_t instance;
00049 f0r_plugin_info_t plugin_info;
00050
00051 f0r_get_param_info_f get_param_info;
00052 f0r_get_param_value_f get_param_value;
00053 f0r_set_param_value_f set_param_value;
00054 f0r_construct_f construct;
00055 f0r_destruct_f destruct;
00056 f0r_deinit_f deinit;
00057 char params[256];
00058
00059
00060 int w, h;
00061 AVRational time_base;
00062 uint64_t pts;
00063 } Frei0rContext;
00064
00065 static void *load_sym(AVFilterContext *ctx, const char *sym_name)
00066 {
00067 Frei0rContext *frei0r = ctx->priv;
00068 void *sym = dlsym(frei0r->dl_handle, sym_name);
00069 if (!sym)
00070 av_log(ctx, AV_LOG_ERROR, "Could not find symbol '%s' in loaded module\n", sym_name);
00071 return sym;
00072 }
00073
00074 static int set_param(AVFilterContext *ctx, f0r_param_info_t info, int index, char *param)
00075 {
00076 Frei0rContext *frei0r = ctx->priv;
00077 union {
00078 double d;
00079 f0r_param_color_t col;
00080 f0r_param_position_t pos;
00081 } val;
00082 char *tail;
00083 uint8_t rgba[4];
00084
00085 switch (info.type) {
00086 case F0R_PARAM_BOOL:
00087 if (!strcmp(param, "y")) val.d = 1.0;
00088 else if (!strcmp(param, "n")) val.d = 0.0;
00089 else goto fail;
00090 break;
00091
00092 case F0R_PARAM_DOUBLE:
00093 val.d = strtod(param, &tail);
00094 if (*tail || val.d == HUGE_VAL)
00095 goto fail;
00096 break;
00097
00098 case F0R_PARAM_COLOR:
00099 if (sscanf(param, "%f/%f/%f", &val.col.r, &val.col.g, &val.col.b) != 3) {
00100 if (av_parse_color(rgba, param, -1, ctx) < 0)
00101 goto fail;
00102 val.col.r = rgba[0] / 255.0;
00103 val.col.g = rgba[1] / 255.0;
00104 val.col.b = rgba[2] / 255.0;
00105 }
00106 break;
00107
00108 case F0R_PARAM_POSITION:
00109 if (sscanf(param, "%lf/%lf", &val.pos.x, &val.pos.y) != 2)
00110 goto fail;
00111 break;
00112 }
00113
00114 frei0r->set_param_value(frei0r->instance, &val, index);
00115 return 0;
00116
00117 fail:
00118 av_log(ctx, AV_LOG_ERROR, "Invalid value '%s' for parameter '%s'\n",
00119 param, info.name);
00120 return AVERROR(EINVAL);
00121 }
00122
00123 static int set_params(AVFilterContext *ctx, const char *params)
00124 {
00125 Frei0rContext *frei0r = ctx->priv;
00126 int i;
00127
00128 for (i = 0; i < frei0r->plugin_info.num_params; i++) {
00129 f0r_param_info_t info;
00130 char *param;
00131 int ret;
00132
00133 frei0r->get_param_info(&info, i);
00134
00135 if (*params) {
00136 if (!(param = av_get_token(¶ms, ":")))
00137 return AVERROR(ENOMEM);
00138 params++;
00139 ret = set_param(ctx, info, i, param);
00140 av_free(param);
00141 if (ret < 0)
00142 return ret;
00143 }
00144
00145 av_log(ctx, AV_LOG_INFO,
00146 "idx:%d name:'%s' type:%s explanation:'%s' ",
00147 i, info.name,
00148 info.type == F0R_PARAM_BOOL ? "bool" :
00149 info.type == F0R_PARAM_DOUBLE ? "double" :
00150 info.type == F0R_PARAM_COLOR ? "color" :
00151 info.type == F0R_PARAM_POSITION ? "position" :
00152 info.type == F0R_PARAM_STRING ? "string" : "unknown",
00153 info.explanation);
00154
00155 #ifdef DEBUG
00156 av_log(ctx, AV_LOG_INFO, "value:");
00157 switch (info.type) {
00158 void *v;
00159 double d;
00160 char s[128];
00161 f0r_param_color_t col;
00162 f0r_param_position_t pos;
00163
00164 case F0R_PARAM_BOOL:
00165 v = &d;
00166 frei0r->get_param_value(frei0r->instance, v, i);
00167 av_log(ctx, AV_LOG_INFO, "%s", d >= 0.5 && d <= 1.0 ? "y" : "n");
00168 break;
00169 case F0R_PARAM_DOUBLE:
00170 v = &d;
00171 frei0r->get_param_value(frei0r->instance, v, i);
00172 av_log(ctx, AV_LOG_INFO, "%f", d);
00173 break;
00174 case F0R_PARAM_COLOR:
00175 v = &col;
00176 frei0r->get_param_value(frei0r->instance, v, i);
00177 av_log(ctx, AV_LOG_INFO, "%f/%f/%f", col.r, col.g, col.b);
00178 break;
00179 case F0R_PARAM_POSITION:
00180 v = &pos;
00181 frei0r->get_param_value(frei0r->instance, v, i);
00182 av_log(ctx, AV_LOG_INFO, "%lf/%lf", pos.x, pos.y);
00183 break;
00184 default:
00185 v = s;
00186 frei0r->get_param_value(frei0r->instance, v, i);
00187 av_log(ctx, AV_LOG_INFO, "'%s'\n", s);
00188 break;
00189 }
00190 #endif
00191 av_log(ctx, AV_LOG_INFO, "\n");
00192 }
00193
00194 return 0;
00195 }
00196
00197 static void *load_path(AVFilterContext *ctx, const char *prefix, const char *name)
00198 {
00199 char path[1024];
00200
00201 snprintf(path, sizeof(path), "%s%s%s", prefix, name, SLIBSUF);
00202 av_log(ctx, AV_LOG_DEBUG, "Looking for frei0r effect in '%s'\n", path);
00203 return dlopen(path, RTLD_NOW|RTLD_LOCAL);
00204 }
00205
00206 static av_cold int frei0r_init(AVFilterContext *ctx,
00207 const char *dl_name, int type)
00208 {
00209 Frei0rContext *frei0r = ctx->priv;
00210 f0r_init_f f0r_init;
00211 f0r_get_plugin_info_f f0r_get_plugin_info;
00212 f0r_plugin_info_t *pi;
00213 char *path;
00214
00215
00216 if ((path = av_strdup(getenv("FREI0R_PATH")))) {
00217 char *p, *ptr = NULL;
00218 for (p = path; p = strtok_r(p, ":", &ptr); p = NULL)
00219 if (frei0r->dl_handle = load_path(ctx, p, dl_name))
00220 break;
00221 av_free(path);
00222 }
00223 if (!frei0r->dl_handle && (path = getenv("HOME"))) {
00224 char prefix[1024];
00225 snprintf(prefix, sizeof(prefix), "%s/.frei0r-1/lib/", path);
00226 frei0r->dl_handle = load_path(ctx, prefix, dl_name);
00227 }
00228 if (!frei0r->dl_handle)
00229 frei0r->dl_handle = load_path(ctx, "/usr/local/lib/frei0r-1/", dl_name);
00230 if (!frei0r->dl_handle)
00231 frei0r->dl_handle = load_path(ctx, "/usr/lib/frei0r-1/", dl_name);
00232 if (!frei0r->dl_handle) {
00233 av_log(ctx, AV_LOG_ERROR, "Could not find module '%s'\n", dl_name);
00234 return AVERROR(EINVAL);
00235 }
00236
00237 if (!(f0r_init = load_sym(ctx, "f0r_init" )) ||
00238 !(f0r_get_plugin_info = load_sym(ctx, "f0r_get_plugin_info")) ||
00239 !(frei0r->get_param_info = load_sym(ctx, "f0r_get_param_info" )) ||
00240 !(frei0r->get_param_value = load_sym(ctx, "f0r_get_param_value")) ||
00241 !(frei0r->set_param_value = load_sym(ctx, "f0r_set_param_value")) ||
00242 !(frei0r->update = load_sym(ctx, "f0r_update" )) ||
00243 !(frei0r->construct = load_sym(ctx, "f0r_construct" )) ||
00244 !(frei0r->destruct = load_sym(ctx, "f0r_destruct" )) ||
00245 !(frei0r->deinit = load_sym(ctx, "f0r_deinit" )))
00246 return AVERROR(EINVAL);
00247
00248 if (f0r_init() < 0) {
00249 av_log(ctx, AV_LOG_ERROR, "Could not init the frei0r module");
00250 return AVERROR(EINVAL);
00251 }
00252
00253 f0r_get_plugin_info(&frei0r->plugin_info);
00254 pi = &frei0r->plugin_info;
00255 if (pi->plugin_type != type) {
00256 av_log(ctx, AV_LOG_ERROR,
00257 "Invalid type '%s' for the plugin\n",
00258 pi->plugin_type == F0R_PLUGIN_TYPE_FILTER ? "filter" :
00259 pi->plugin_type == F0R_PLUGIN_TYPE_SOURCE ? "source" :
00260 pi->plugin_type == F0R_PLUGIN_TYPE_MIXER2 ? "mixer2" :
00261 pi->plugin_type == F0R_PLUGIN_TYPE_MIXER3 ? "mixer3" : "unknown");
00262 return AVERROR(EINVAL);
00263 }
00264
00265 av_log(ctx, AV_LOG_INFO,
00266 "name:%s author:'%s' explanation:'%s' color_model:%s "
00267 "frei0r_version:%d version:%d.%d num_params:%d\n",
00268 pi->name, pi->author, pi->explanation,
00269 pi->color_model == F0R_COLOR_MODEL_BGRA8888 ? "bgra8888" :
00270 pi->color_model == F0R_COLOR_MODEL_RGBA8888 ? "rgba8888" :
00271 pi->color_model == F0R_COLOR_MODEL_PACKED32 ? "packed32" : "unknown",
00272 pi->frei0r_version, pi->major_version, pi->minor_version, pi->num_params);
00273
00274 return 0;
00275 }
00276
00277 static av_cold int filter_init(AVFilterContext *ctx, const char *args, void *opaque)
00278 {
00279 Frei0rContext *frei0r = ctx->priv;
00280 char dl_name[1024], c;
00281 *frei0r->params = 0;
00282
00283 if (args)
00284 sscanf(args, "%1023[^:=]%c%255c", dl_name, &c, frei0r->params);
00285
00286 return frei0r_init(ctx, dl_name, F0R_PLUGIN_TYPE_FILTER);
00287 }
00288
00289 static av_cold void uninit(AVFilterContext *ctx)
00290 {
00291 Frei0rContext *frei0r = ctx->priv;
00292
00293 if (frei0r->destruct && frei0r->instance)
00294 frei0r->destruct(frei0r->instance);
00295 if (frei0r->deinit)
00296 frei0r->deinit();
00297 if (frei0r->dl_handle)
00298 dlclose(frei0r->dl_handle);
00299
00300 memset(frei0r, 0, sizeof(*frei0r));
00301 }
00302
00303 static int config_input_props(AVFilterLink *inlink)
00304 {
00305 AVFilterContext *ctx = inlink->dst;
00306 Frei0rContext *frei0r = ctx->priv;
00307
00308 if (!(frei0r->instance = frei0r->construct(inlink->w, inlink->h))) {
00309 av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance");
00310 return AVERROR(EINVAL);
00311 }
00312
00313 return set_params(ctx, frei0r->params);
00314 }
00315
00316 static int query_formats(AVFilterContext *ctx)
00317 {
00318 Frei0rContext *frei0r = ctx->priv;
00319 AVFilterFormats *formats = NULL;
00320
00321 if (frei0r->plugin_info.color_model == F0R_COLOR_MODEL_BGRA8888) {
00322 avfilter_add_format(&formats, PIX_FMT_BGRA);
00323 } else if (frei0r->plugin_info.color_model == F0R_COLOR_MODEL_RGBA8888) {
00324 avfilter_add_format(&formats, PIX_FMT_RGBA);
00325 } else {
00326 static const enum PixelFormat pix_fmts[] = {
00327 PIX_FMT_BGRA, PIX_FMT_ARGB, PIX_FMT_ABGR, PIX_FMT_ARGB, PIX_FMT_NONE
00328 };
00329 formats = avfilter_make_format_list(pix_fmts);
00330 }
00331
00332 if (!formats)
00333 return AVERROR(ENOMEM);
00334
00335 avfilter_set_common_pixel_formats(ctx, formats);
00336 return 0;
00337 }
00338
00339 static void null_draw_slice(AVFilterLink *inlink, int y, int h, int slice_dir) { }
00340
00341 static void end_frame(AVFilterLink *inlink)
00342 {
00343 Frei0rContext *frei0r = inlink->dst->priv;
00344 AVFilterLink *outlink = inlink->dst->outputs[0];
00345 AVFilterBufferRef *inpicref = inlink->cur_buf;
00346 AVFilterBufferRef *outpicref = outlink->out_buf;
00347
00348 frei0r->update(frei0r->instance, inpicref->pts * av_q2d(inlink->time_base) * 1000,
00349 (const uint32_t *)inpicref->data[0],
00350 (uint32_t *)outpicref->data[0]);
00351 avfilter_unref_buffer(inpicref);
00352 avfilter_draw_slice(outlink, 0, outlink->h, 1);
00353 avfilter_end_frame(outlink);
00354 avfilter_unref_buffer(outpicref);
00355 }
00356
00357 AVFilter avfilter_vf_frei0r = {
00358 .name = "frei0r",
00359 .description = NULL_IF_CONFIG_SMALL("Apply a frei0r effect."),
00360
00361 .query_formats = query_formats,
00362 .init = filter_init,
00363 .uninit = uninit,
00364
00365 .priv_size = sizeof(Frei0rContext),
00366
00367 .inputs = (AVFilterPad[]) {{ .name = "default",
00368 .type = AVMEDIA_TYPE_VIDEO,
00369 .draw_slice = null_draw_slice,
00370 .config_props = config_input_props,
00371 .end_frame = end_frame,
00372 .min_perms = AV_PERM_READ },
00373 { .name = NULL}},
00374
00375 .outputs = (AVFilterPad[]) {{ .name = "default",
00376 .type = AVMEDIA_TYPE_VIDEO, },
00377 { .name = NULL}},
00378 };
00379
00380 static av_cold int source_init(AVFilterContext *ctx, const char *args, void *opaque)
00381 {
00382 Frei0rContext *frei0r = ctx->priv;
00383 char dl_name[1024], c;
00384 char frame_size[128] = "";
00385 char frame_rate[128] = "";
00386 AVRational frame_rate_q;
00387
00388 memset(frei0r->params, 0, sizeof(frei0r->params));
00389
00390 if (args)
00391 sscanf(args, "%127[^:]:%127[^:]:%1023[^:=]%c%255c",
00392 frame_size, frame_rate, dl_name, &c, frei0r->params);
00393
00394 if (av_parse_video_size(&frei0r->w, &frei0r->h, frame_size) < 0) {
00395 av_log(ctx, AV_LOG_ERROR, "Invalid frame size: '%s'\n", frame_size);
00396 return AVERROR(EINVAL);
00397 }
00398
00399 if (av_parse_video_rate(&frame_rate_q, frame_rate) < 0 ||
00400 frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
00401 av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", frame_rate);
00402 return AVERROR(EINVAL);
00403 }
00404 frei0r->time_base.num = frame_rate_q.den;
00405 frei0r->time_base.den = frame_rate_q.num;
00406
00407 return frei0r_init(ctx, dl_name, F0R_PLUGIN_TYPE_SOURCE);
00408 }
00409
00410 static int source_config_props(AVFilterLink *outlink)
00411 {
00412 AVFilterContext *ctx = outlink->src;
00413 Frei0rContext *frei0r = ctx->priv;
00414
00415 if (av_image_check_size(frei0r->w, frei0r->h, 0, ctx) < 0)
00416 return AVERROR(EINVAL);
00417 outlink->w = frei0r->w;
00418 outlink->h = frei0r->h;
00419 outlink->time_base = frei0r->time_base;
00420
00421 if (!(frei0r->instance = frei0r->construct(outlink->w, outlink->h))) {
00422 av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance");
00423 return AVERROR(EINVAL);
00424 }
00425
00426 return set_params(ctx, frei0r->params);
00427 }
00428
00429 static int source_request_frame(AVFilterLink *outlink)
00430 {
00431 Frei0rContext *frei0r = outlink->src->priv;
00432 AVFilterBufferRef *picref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE, outlink->w, outlink->h);
00433 picref->video->sample_aspect_ratio = (AVRational) {1, 1};
00434 picref->pts = frei0r->pts++;
00435 picref->pos = -1;
00436
00437 avfilter_start_frame(outlink, avfilter_ref_buffer(picref, ~0));
00438 frei0r->update(frei0r->instance, av_rescale_q(picref->pts, frei0r->time_base, (AVRational){1,1000}),
00439 NULL, (uint32_t *)picref->data[0]);
00440 avfilter_draw_slice(outlink, 0, outlink->h, 1);
00441 avfilter_end_frame(outlink);
00442 avfilter_unref_buffer(picref);
00443
00444 return 0;
00445 }
00446
00447 AVFilter avfilter_vsrc_frei0r_src = {
00448 .name = "frei0r_src",
00449 .description = NULL_IF_CONFIG_SMALL("Generate a frei0r source."),
00450
00451 .priv_size = sizeof(Frei0rContext),
00452 .init = source_init,
00453 .uninit = uninit,
00454
00455 .query_formats = query_formats,
00456
00457 .inputs = (AVFilterPad[]) {{ .name = NULL}},
00458
00459 .outputs = (AVFilterPad[]) {{ .name = "default",
00460 .type = AVMEDIA_TYPE_VIDEO,
00461 .request_frame = source_request_frame,
00462 .config_props = source_config_props },
00463 { .name = NULL}},
00464 };