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Diffstat (limited to 'video/out/opengl/user_shaders.h')
-rw-r--r-- | video/out/opengl/user_shaders.h | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/video/out/opengl/user_shaders.h b/video/out/opengl/user_shaders.h new file mode 100644 index 0000000000..b8c287b6bd --- /dev/null +++ b/video/out/opengl/user_shaders.h @@ -0,0 +1,74 @@ +/* + * This file is part of mpv. + * + * mpv 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. + * + * mpv 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 mpv. If not, see <http://www.gnu.org/licenses/>. + */ + +#ifndef MP_GL_USER_SHADERS_H +#define MP_GL_USER_SHADERS_H + +#include "common.h" +#include "utils.h" + +#define SHADER_API 1 +#define SHADER_MAX_HOOKS 16 +#define SHADER_MAX_BINDS 6 +#define MAX_SZEXP_SIZE 32 + +enum szexp_op { + SZEXP_OP_ADD, + SZEXP_OP_SUB, + SZEXP_OP_MUL, + SZEXP_OP_DIV, + SZEXP_OP_NOT, + SZEXP_OP_GT, + SZEXP_OP_LT, +}; + +enum szexp_tag { + SZEXP_END = 0, // End of an RPN expression + SZEXP_CONST, // Push a constant value onto the stack + SZEXP_VAR_W, // Get the width/height of a named texture (variable) + SZEXP_VAR_H, + SZEXP_OP2, // Pop two elements and push the result of a dyadic operation + SZEXP_OP1, // Pop one element and push the result of a monadic operation +}; + +struct szexp { + enum szexp_tag tag; + union { + float cval; + struct bstr varname; + enum szexp_op op; + } val; +}; + +struct gl_user_shader { + struct bstr hook_tex[SHADER_MAX_HOOKS]; + struct bstr bind_tex[SHADER_MAX_BINDS]; + struct bstr save_tex; + struct bstr pass_body; + struct gl_transform offset; + struct szexp width[MAX_SZEXP_SIZE]; + struct szexp height[MAX_SZEXP_SIZE]; + struct szexp cond[MAX_SZEXP_SIZE]; + int components; +}; + +// Parse the next shader pass from 'body'. Returns false if the end of the +// string was reached +bool parse_user_shader_pass(struct mp_log *log, struct bstr *body, + struct gl_user_shader *out); + +#endif |