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/*
* This file is part of libplacebo.
*
* libplacebo 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.
*
* libplacebo 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 libplacebo. If not, see <http://www.gnu.org/licenses/>.
*/
#include "shaders.h"
#include "shaders/film_grain.h"
bool pl_needs_film_grain(const struct pl_film_grain_params *params)
{
switch (params->data.type) {
case PL_FILM_GRAIN_NONE: return false;
case PL_FILM_GRAIN_AV1: return pl_needs_fg_av1(params);
case PL_FILM_GRAIN_H274: return pl_needs_fg_h274(params);
default: pl_unreachable();
}
}
struct sh_grain_obj {
pl_shader_obj av1;
pl_shader_obj h274;
};
static void sh_grain_uninit(pl_gpu gpu, void *ptr)
{
struct sh_grain_obj *obj = ptr;
pl_shader_obj_destroy(&obj->av1);
pl_shader_obj_destroy(&obj->h274);
}
bool pl_shader_film_grain(pl_shader sh, pl_shader_obj *grain_state,
const struct pl_film_grain_params *params)
{
if (!pl_needs_film_grain(params)) {
// FIXME: Instead of erroring, sample directly
SH_FAIL(sh, "pl_shader_film_grain called but no film grain needs to be "
"applied, test with `pl_needs_film_grain` first!");
return false;
}
struct sh_grain_obj *obj;
obj = SH_OBJ(sh, grain_state, PL_SHADER_OBJ_FILM_GRAIN,
struct sh_grain_obj, sh_grain_uninit);
if (!obj)
return false;
switch (params->data.type) {
case PL_FILM_GRAIN_NONE: return false;
case PL_FILM_GRAIN_AV1: return pl_shader_fg_av1(sh, &obj->av1, params);
case PL_FILM_GRAIN_H274: return pl_shader_fg_h274(sh, &obj->h274, params);
default: pl_unreachable();
}
}
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