| /* |
| * Copyright (c) 2010 Stefano Sabatini |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| /** |
| * @file |
| * frei0r wrapper |
| */ |
| |
| #include <dlfcn.h> |
| #include <frei0r.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| #include "config.h" |
| #include "libavutil/avstring.h" |
| #include "libavutil/common.h" |
| #include "libavutil/eval.h" |
| #include "libavutil/imgutils.h" |
| #include "libavutil/internal.h" |
| #include "libavutil/mathematics.h" |
| #include "libavutil/mem.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/parseutils.h" |
| #include "avfilter.h" |
| #include "formats.h" |
| #include "internal.h" |
| #include "video.h" |
| |
| typedef f0r_instance_t (*f0r_construct_f)(unsigned int width, unsigned int height); |
| typedef void (*f0r_destruct_f)(f0r_instance_t instance); |
| typedef void (*f0r_deinit_f)(void); |
| typedef int (*f0r_init_f)(void); |
| typedef void (*f0r_get_plugin_info_f)(f0r_plugin_info_t *info); |
| typedef void (*f0r_get_param_info_f)(f0r_param_info_t *info, int param_index); |
| typedef void (*f0r_update_f)(f0r_instance_t instance, double time, const uint32_t *inframe, uint32_t *outframe); |
| 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); |
| typedef void (*f0r_set_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index); |
| typedef void (*f0r_get_param_value_f)(f0r_instance_t instance, f0r_param_t param, int param_index); |
| |
| typedef struct Frei0rContext { |
| const AVClass *class; |
| f0r_update_f update; |
| void *dl_handle; /* dynamic library handle */ |
| f0r_instance_t instance; |
| f0r_plugin_info_t plugin_info; |
| |
| f0r_get_param_info_f get_param_info; |
| f0r_get_param_value_f get_param_value; |
| f0r_set_param_value_f set_param_value; |
| f0r_construct_f construct; |
| f0r_destruct_f destruct; |
| f0r_deinit_f deinit; |
| |
| char *dl_name; |
| char *params; |
| AVRational framerate; |
| |
| /* only used by the source */ |
| int w, h; |
| AVRational time_base; |
| uint64_t pts; |
| } Frei0rContext; |
| |
| static void *load_sym(AVFilterContext *ctx, const char *sym_name) |
| { |
| Frei0rContext *s = ctx->priv; |
| void *sym = dlsym(s->dl_handle, sym_name); |
| if (!sym) |
| av_log(ctx, AV_LOG_ERROR, "Could not find symbol '%s' in loaded module.\n", sym_name); |
| return sym; |
| } |
| |
| static int set_param(AVFilterContext *ctx, f0r_param_info_t info, int index, char *param) |
| { |
| Frei0rContext *s = ctx->priv; |
| union { |
| double d; |
| f0r_param_color_t col; |
| f0r_param_position_t pos; |
| f0r_param_string str; |
| } val; |
| char *tail; |
| uint8_t rgba[4]; |
| |
| switch (info.type) { |
| case F0R_PARAM_BOOL: |
| if (!strcmp(param, "y")) val.d = 1.0; |
| else if (!strcmp(param, "n")) val.d = 0.0; |
| else goto fail; |
| break; |
| |
| case F0R_PARAM_DOUBLE: |
| val.d = av_strtod(param, &tail); |
| if (*tail || val.d == HUGE_VAL) |
| goto fail; |
| break; |
| |
| case F0R_PARAM_COLOR: |
| if (sscanf(param, "%f/%f/%f", &val.col.r, &val.col.g, &val.col.b) != 3) { |
| if (av_parse_color(rgba, param, -1, ctx) < 0) |
| goto fail; |
| val.col.r = rgba[0] / 255.0; |
| val.col.g = rgba[1] / 255.0; |
| val.col.b = rgba[2] / 255.0; |
| } |
| break; |
| |
| case F0R_PARAM_POSITION: |
| if (sscanf(param, "%lf/%lf", &val.pos.x, &val.pos.y) != 2) |
| goto fail; |
| break; |
| |
| case F0R_PARAM_STRING: |
| val.str = param; |
| break; |
| } |
| |
| s->set_param_value(s->instance, &val, index); |
| return 0; |
| |
| fail: |
| av_log(ctx, AV_LOG_ERROR, "Invalid value '%s' for parameter '%s'.\n", |
| param, info.name); |
| return AVERROR(EINVAL); |
| } |
| |
| static int set_params(AVFilterContext *ctx, const char *params) |
| { |
| Frei0rContext *s = ctx->priv; |
| int i; |
| |
| if (!params) |
| return 0; |
| |
| for (i = 0; i < s->plugin_info.num_params; i++) { |
| f0r_param_info_t info; |
| char *param; |
| int ret; |
| |
| s->get_param_info(&info, i); |
| |
| if (*params) { |
| if (!(param = av_get_token(¶ms, "|"))) |
| return AVERROR(ENOMEM); |
| if (*params) |
| params++; /* skip ':' */ |
| ret = set_param(ctx, info, i, param); |
| av_free(param); |
| if (ret < 0) |
| return ret; |
| } |
| } |
| |
| return 0; |
| } |
| |
| static int load_path(AVFilterContext *ctx, void **handle_ptr, const char *prefix, const char *name) |
| { |
| char *path = av_asprintf("%s%s%s", prefix, name, SLIBSUF); |
| if (!path) |
| return AVERROR(ENOMEM); |
| av_log(ctx, AV_LOG_DEBUG, "Looking for frei0r effect in '%s'.\n", path); |
| *handle_ptr = dlopen(path, RTLD_NOW|RTLD_LOCAL); |
| av_free(path); |
| return 0; |
| } |
| |
| static av_cold int frei0r_init(AVFilterContext *ctx, |
| const char *dl_name, int type) |
| { |
| Frei0rContext *s = ctx->priv; |
| f0r_init_f f0r_init; |
| f0r_get_plugin_info_f f0r_get_plugin_info; |
| f0r_plugin_info_t *pi; |
| char *path; |
| int ret = 0; |
| int i; |
| static const char* const frei0r_pathlist[] = { |
| "/usr/local/lib/frei0r-1/", |
| "/usr/lib/frei0r-1/", |
| "/usr/local/lib64/frei0r-1/", |
| "/usr/lib64/frei0r-1/" |
| }; |
| |
| if (!dl_name) { |
| av_log(ctx, AV_LOG_ERROR, "No filter name provided.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| /* see: http://frei0r.dyne.org/codedoc/html/group__pluglocations.html */ |
| if ((path = av_strdup(getenv("FREI0R_PATH")))) { |
| #ifdef _WIN32 |
| const char *separator = ";"; |
| #else |
| const char *separator = ":"; |
| #endif |
| char *p, *ptr = NULL; |
| for (p = path; p = av_strtok(p, separator, &ptr); p = NULL) { |
| /* add additional trailing slash in case it is missing */ |
| char *p1 = av_asprintf("%s/", p); |
| if (!p1) { |
| ret = AVERROR(ENOMEM); |
| goto check_path_end; |
| } |
| ret = load_path(ctx, &s->dl_handle, p1, dl_name); |
| av_free(p1); |
| if (ret < 0) |
| goto check_path_end; |
| if (s->dl_handle) |
| break; |
| } |
| |
| check_path_end: |
| av_free(path); |
| if (ret < 0) |
| return ret; |
| } |
| if (!s->dl_handle && (path = getenv("HOME"))) { |
| char *prefix = av_asprintf("%s/.frei0r-1/lib/", path); |
| if (!prefix) |
| return AVERROR(ENOMEM); |
| ret = load_path(ctx, &s->dl_handle, prefix, dl_name); |
| av_free(prefix); |
| if (ret < 0) |
| return ret; |
| } |
| for (i = 0; !s->dl_handle && i < FF_ARRAY_ELEMS(frei0r_pathlist); i++) { |
| ret = load_path(ctx, &s->dl_handle, frei0r_pathlist[i], dl_name); |
| if (ret < 0) |
| return ret; |
| } |
| if (!s->dl_handle) { |
| av_log(ctx, AV_LOG_ERROR, "Could not find module '%s'.\n", dl_name); |
| return AVERROR(EINVAL); |
| } |
| |
| if (!(f0r_init = load_sym(ctx, "f0r_init" )) || |
| !(f0r_get_plugin_info = load_sym(ctx, "f0r_get_plugin_info")) || |
| !(s->get_param_info = load_sym(ctx, "f0r_get_param_info" )) || |
| !(s->get_param_value = load_sym(ctx, "f0r_get_param_value")) || |
| !(s->set_param_value = load_sym(ctx, "f0r_set_param_value")) || |
| !(s->update = load_sym(ctx, "f0r_update" )) || |
| !(s->construct = load_sym(ctx, "f0r_construct" )) || |
| !(s->destruct = load_sym(ctx, "f0r_destruct" )) || |
| !(s->deinit = load_sym(ctx, "f0r_deinit" ))) |
| return AVERROR(EINVAL); |
| |
| if (f0r_init() < 0) { |
| av_log(ctx, AV_LOG_ERROR, "Could not init the frei0r module.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| f0r_get_plugin_info(&s->plugin_info); |
| pi = &s->plugin_info; |
| if (pi->plugin_type != type) { |
| av_log(ctx, AV_LOG_ERROR, |
| "Invalid type '%s' for this plugin\n", |
| pi->plugin_type == F0R_PLUGIN_TYPE_FILTER ? "filter" : |
| pi->plugin_type == F0R_PLUGIN_TYPE_SOURCE ? "source" : |
| pi->plugin_type == F0R_PLUGIN_TYPE_MIXER2 ? "mixer2" : |
| pi->plugin_type == F0R_PLUGIN_TYPE_MIXER3 ? "mixer3" : "unknown"); |
| return AVERROR(EINVAL); |
| } |
| |
| av_log(ctx, AV_LOG_VERBOSE, |
| "name:%s author:'%s' explanation:'%s' color_model:%s " |
| "frei0r_version:%d version:%d.%d num_params:%d\n", |
| pi->name, pi->author, pi->explanation, |
| pi->color_model == F0R_COLOR_MODEL_BGRA8888 ? "bgra8888" : |
| pi->color_model == F0R_COLOR_MODEL_RGBA8888 ? "rgba8888" : |
| pi->color_model == F0R_COLOR_MODEL_PACKED32 ? "packed32" : "unknown", |
| pi->frei0r_version, pi->major_version, pi->minor_version, pi->num_params); |
| |
| return 0; |
| } |
| |
| static av_cold int filter_init(AVFilterContext *ctx) |
| { |
| Frei0rContext *s = ctx->priv; |
| |
| return frei0r_init(ctx, s->dl_name, F0R_PLUGIN_TYPE_FILTER); |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| Frei0rContext *s = ctx->priv; |
| |
| if (s->destruct && s->instance) |
| s->destruct(s->instance); |
| if (s->deinit) |
| s->deinit(); |
| if (s->dl_handle) |
| dlclose(s->dl_handle); |
| } |
| |
| static int config_input_props(AVFilterLink *inlink) |
| { |
| AVFilterContext *ctx = inlink->dst; |
| Frei0rContext *s = ctx->priv; |
| |
| if (s->destruct && s->instance) |
| s->destruct(s->instance); |
| if (!(s->instance = s->construct(inlink->w, inlink->h))) { |
| av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| return set_params(ctx, s->params); |
| } |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| Frei0rContext *s = ctx->priv; |
| AVFilterFormats *formats = NULL; |
| int ret; |
| |
| if (s->plugin_info.color_model == F0R_COLOR_MODEL_BGRA8888) { |
| if ((ret = ff_add_format(&formats, AV_PIX_FMT_BGRA)) < 0) |
| return ret; |
| } else if (s->plugin_info.color_model == F0R_COLOR_MODEL_RGBA8888) { |
| if ((ret = ff_add_format(&formats, AV_PIX_FMT_RGBA)) < 0) |
| return ret; |
| } else { /* F0R_COLOR_MODEL_PACKED32 */ |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_BGRA, AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_NONE |
| }; |
| formats = ff_make_format_list(pix_fmts); |
| } |
| |
| if (!formats) |
| return AVERROR(ENOMEM); |
| |
| return ff_set_common_formats(ctx, formats); |
| } |
| |
| static int filter_frame(AVFilterLink *inlink, AVFrame *in) |
| { |
| Frei0rContext *s = inlink->dst->priv; |
| AVFilterLink *outlink = inlink->dst->outputs[0]; |
| AVFrame *out; |
| |
| out = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| if (!out) { |
| av_frame_free(&in); |
| return AVERROR(ENOMEM); |
| } |
| av_frame_copy_props(out, in); |
| |
| s->update(s->instance, in->pts * av_q2d(inlink->time_base) * 1000, |
| (const uint32_t *)in->data[0], |
| (uint32_t *)out->data[0]); |
| |
| av_frame_free(&in); |
| |
| return ff_filter_frame(outlink, out); |
| } |
| |
| static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, |
| char *res, int res_len, int flags) |
| { |
| Frei0rContext *s = ctx->priv; |
| int ret; |
| |
| ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags); |
| if (ret < 0) |
| return ret; |
| |
| return set_params(ctx, s->params); |
| } |
| |
| #define OFFSET(x) offsetof(Frei0rContext, x) |
| #define FLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM |
| #define TFLAGS AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_RUNTIME_PARAM |
| static const AVOption frei0r_options[] = { |
| { "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = TFLAGS }, |
| { NULL } |
| }; |
| |
| AVFILTER_DEFINE_CLASS(frei0r); |
| |
| static const AVFilterPad avfilter_vf_frei0r_inputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_input_props, |
| .filter_frame = filter_frame, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad avfilter_vf_frei0r_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_frei0r = { |
| .name = "frei0r", |
| .description = NULL_IF_CONFIG_SMALL("Apply a frei0r effect."), |
| .query_formats = query_formats, |
| .init = filter_init, |
| .uninit = uninit, |
| .priv_size = sizeof(Frei0rContext), |
| .priv_class = &frei0r_class, |
| .inputs = avfilter_vf_frei0r_inputs, |
| .outputs = avfilter_vf_frei0r_outputs, |
| .process_command = process_command, |
| .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, |
| }; |
| |
| static av_cold int source_init(AVFilterContext *ctx) |
| { |
| Frei0rContext *s = ctx->priv; |
| |
| s->time_base.num = s->framerate.den; |
| s->time_base.den = s->framerate.num; |
| |
| return frei0r_init(ctx, s->dl_name, F0R_PLUGIN_TYPE_SOURCE); |
| } |
| |
| static int source_config_props(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| Frei0rContext *s = ctx->priv; |
| |
| if (av_image_check_size(s->w, s->h, 0, ctx) < 0) |
| return AVERROR(EINVAL); |
| outlink->w = s->w; |
| outlink->h = s->h; |
| outlink->time_base = s->time_base; |
| outlink->frame_rate = av_inv_q(s->time_base); |
| outlink->sample_aspect_ratio = (AVRational){1,1}; |
| |
| if (s->destruct && s->instance) |
| s->destruct(s->instance); |
| if (!(s->instance = s->construct(outlink->w, outlink->h))) { |
| av_log(ctx, AV_LOG_ERROR, "Impossible to load frei0r instance.\n"); |
| return AVERROR(EINVAL); |
| } |
| if (!s->params) { |
| av_log(ctx, AV_LOG_ERROR, "frei0r filter parameters not set.\n"); |
| return AVERROR(EINVAL); |
| } |
| |
| return set_params(ctx, s->params); |
| } |
| |
| static int source_request_frame(AVFilterLink *outlink) |
| { |
| Frei0rContext *s = outlink->src->priv; |
| AVFrame *frame = ff_get_video_buffer(outlink, outlink->w, outlink->h); |
| |
| if (!frame) |
| return AVERROR(ENOMEM); |
| |
| frame->sample_aspect_ratio = (AVRational) {1, 1}; |
| frame->pts = s->pts++; |
| |
| s->update(s->instance, av_rescale_q(frame->pts, s->time_base, (AVRational){1,1000}), |
| NULL, (uint32_t *)frame->data[0]); |
| |
| return ff_filter_frame(outlink, frame); |
| } |
| |
| static const AVOption frei0r_src_options[] = { |
| { "size", "Dimensions of the generated video.", OFFSET(w), AV_OPT_TYPE_IMAGE_SIZE, { .str = "320x240" }, .flags = FLAGS }, |
| { "framerate", NULL, OFFSET(framerate), AV_OPT_TYPE_VIDEO_RATE, { .str = "25" }, 0, INT_MAX, .flags = FLAGS }, |
| { "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| { "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS }, |
| { NULL }, |
| }; |
| |
| AVFILTER_DEFINE_CLASS(frei0r_src); |
| |
| static const AVFilterPad avfilter_vsrc_frei0r_src_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .request_frame = source_request_frame, |
| .config_props = source_config_props |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vsrc_frei0r_src = { |
| .name = "frei0r_src", |
| .description = NULL_IF_CONFIG_SMALL("Generate a frei0r source."), |
| .priv_size = sizeof(Frei0rContext), |
| .priv_class = &frei0r_src_class, |
| .init = source_init, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .inputs = NULL, |
| .outputs = avfilter_vsrc_frei0r_src_outputs, |
| }; |