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FFmpeg/libavfilter/vf_frei0r.c

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/*
* Copyright (c) 2010 Stefano Sabatini
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; 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/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;
char *size;
char *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;
} 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 = 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;
}
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;
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(&params, "|")))
return AVERROR(ENOMEM);
params++; /* skip ':' */
ret = set_param(ctx, info, i, param);
av_free(param);
if (ret < 0)
return ret;
}
av_log(ctx, AV_LOG_VERBOSE,
"idx:%d name:'%s' type:%s explanation:'%s' ",
i, info.name,
info.type == F0R_PARAM_BOOL ? "bool" :
info.type == F0R_PARAM_DOUBLE ? "double" :
info.type == F0R_PARAM_COLOR ? "color" :
info.type == F0R_PARAM_POSITION ? "position" :
info.type == F0R_PARAM_STRING ? "string" : "unknown",
info.explanation);
#ifdef DEBUG
av_log(ctx, AV_LOG_DEBUG, "value:");
switch (info.type) {
void *v;
double d;
char s[128];
f0r_param_color_t col;
f0r_param_position_t pos;
case F0R_PARAM_BOOL:
v = &d;
s->get_param_value(s->instance, v, i);
av_log(ctx, AV_LOG_DEBUG, "%s", d >= 0.5 && d <= 1.0 ? "y" : "n");
break;
case F0R_PARAM_DOUBLE:
v = &d;
s->get_param_value(s->instance, v, i);
av_log(ctx, AV_LOG_DEBUG, "%f", d);
break;
case F0R_PARAM_COLOR:
v = &col;
s->get_param_value(s->instance, v, i);
av_log(ctx, AV_LOG_DEBUG, "%f/%f/%f", col.r, col.g, col.b);
break;
case F0R_PARAM_POSITION:
v = &pos;
s->get_param_value(s->instance, v, i);
av_log(ctx, AV_LOG_DEBUG, "%f/%f", pos.x, pos.y);
break;
default: /* F0R_PARAM_STRING */
v = s;
s->get_param_value(s->instance, v, i);
av_log(ctx, AV_LOG_DEBUG, "'%s'\n", s);
break;
}
#endif
av_log(ctx, AV_LOG_VERBOSE, "\n");
}
return 0;
}
static void *load_path(AVFilterContext *ctx, const char *prefix, const char *name)
{
char path[1024];
snprintf(path, sizeof(path), "%s%s%s", prefix, name, SLIBSUF);
av_log(ctx, AV_LOG_DEBUG, "Looking for frei0r effect in '%s'\n", path);
return dlopen(path, RTLD_NOW|RTLD_LOCAL);
}
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;
if (!dl_name) {
av_log(ctx, AV_LOG_ERROR, "No filter name provided.\n");
return AVERROR(EINVAL);
}
/* see: http://piksel.org/frei0r/1.2/spec/1.2/spec/group__pluglocations.html */
if ((path = av_strdup(getenv("FREI0R_PATH")))) {
char *p, *ptr = NULL;
for (p = path; p = strtok_r(p, ":", &ptr); p = NULL)
if (s->dl_handle = load_path(ctx, p, dl_name))
break;
av_free(path);
}
if (!s->dl_handle && (path = getenv("HOME"))) {
char prefix[1024];
snprintf(prefix, sizeof(prefix), "%s/.frei0r-1/lib/", path);
s->dl_handle = load_path(ctx, prefix, dl_name);
}
if (!s->dl_handle)
s->dl_handle = load_path(ctx, "/usr/local/lib/frei0r-1/", dl_name);
if (!s->dl_handle)
s->dl_handle = load_path(ctx, "/usr/lib/frei0r-1/", dl_name);
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");
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 the 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");
return AVERROR(EINVAL);
}
return set_params(ctx, s->params);
}
static int query_formats(AVFilterContext *ctx)
{
Frei0rContext *s = ctx->priv;
AVFilterFormats *formats = NULL;
if (s->plugin_info.color_model == F0R_COLOR_MODEL_BGRA8888) {
ff_add_format(&formats, AV_PIX_FMT_BGRA);
} else if (s->plugin_info.color_model == F0R_COLOR_MODEL_RGBA8888) {
ff_add_format(&formats, AV_PIX_FMT_RGBA);
} 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_ARGB, AV_PIX_FMT_NONE
};
formats = ff_make_format_list(pix_fmts);
}
if (!formats)
return AVERROR(ENOMEM);
ff_set_common_formats(ctx, formats);
return 0;
}
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);
}
#define OFFSET(x) offsetof(Frei0rContext, x)
#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
static const AVOption filter_options[] = {
{ "filter_name", NULL, OFFSET(dl_name), AV_OPT_TYPE_STRING, .flags = FLAGS },
{ "filter_params", NULL, OFFSET(params), AV_OPT_TYPE_STRING, .flags = FLAGS },
{ NULL },
};
static const AVClass filter_class = {
.class_name = "frei0r",
.item_name = av_default_item_name,
.option = filter_options,
.version = LIBAVUTIL_VERSION_INT,
};
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 = &filter_class,
.inputs = avfilter_vf_frei0r_inputs,
.outputs = avfilter_vf_frei0r_outputs,
};
static av_cold int source_init(AVFilterContext *ctx)
{
Frei0rContext *s = ctx->priv;
AVRational frame_rate_q;
if (av_parse_video_size(&s->w, &s->h, s->size) < 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame size: '%s'\n", s->size);
return AVERROR(EINVAL);
}
if (av_parse_video_rate(&frame_rate_q, s->framerate) < 0 ||
frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: '%s'\n", s->framerate);
return AVERROR(EINVAL);
}
s->time_base.num = frame_rate_q.den;
s->time_base.den = frame_rate_q.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;
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");
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 src_options[] = {
{ "size", "Dimensions of the generated video.", OFFSET(size), AV_OPT_TYPE_STRING, { .str = "" }, .flags = FLAGS },
{ "framerate", NULL, OFFSET(framerate), AV_OPT_TYPE_STRING, { .str = "25" }, .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 },
};
static const AVClass src_class = {
.class_name = "frei0r_src",
.item_name = av_default_item_name,
.option = src_options,
.version = LIBAVUTIL_VERSION_INT,
};
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 = &src_class,
.init = source_init,
.uninit = uninit,
.query_formats = query_formats,
.inputs = NULL,
.outputs = avfilter_vsrc_frei0r_src_outputs,
};
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