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- /******************************************************************************
- Copyright (C) 2023 by Lain Bailey <[email protected]>
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 2 of the License, or
- (at your option) any later version.
- This program 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 General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>.
- ******************************************************************************/
- #pragma once
- #include <graphics/matrix4.h>
- #include <graphics/vec4.h>
- #include <obs.hpp>
- #include <QSize>
- #include <QWidget>
- static inline void GetScaleAndCenterPos(int baseCX, int baseCY, int windowCX, int windowCY, int &x, int &y,
- float &scale)
- {
- double windowAspect, baseAspect;
- int newCX, newCY;
- windowAspect = double(windowCX) / double(windowCY);
- baseAspect = double(baseCX) / double(baseCY);
- if (windowAspect > baseAspect) {
- scale = float(windowCY) / float(baseCY);
- newCX = int(double(windowCY) * baseAspect);
- newCY = windowCY;
- } else {
- scale = float(windowCX) / float(baseCX);
- newCX = windowCX;
- newCY = int(float(windowCX) / baseAspect);
- }
- x = windowCX / 2 - newCX / 2;
- y = windowCY / 2 - newCY / 2;
- }
- static inline void GetCenterPosFromFixedScale(int baseCX, int baseCY, int windowCX, int windowCY, int &x, int &y,
- float scale)
- {
- x = (float(windowCX) - float(baseCX) * scale) / 2.0f;
- y = (float(windowCY) - float(baseCY) * scale) / 2.0f;
- }
- static inline QSize GetPixelSize(QWidget *widget)
- {
- return widget->size() * widget->devicePixelRatioF();
- }
- #define OUTLINE_COLOR 0xFFD0D0D0
- #define LINE_LENGTH 0.1f
- // Rec. ITU-R BT.1848-1 / EBU R 95
- #define ACTION_SAFE_PERCENT 0.035f // 3.5%
- #define GRAPHICS_SAFE_PERCENT 0.05f // 5.0%
- #define FOURBYTHREE_SAFE_PERCENT 0.1625f // 16.25%
- static inline void InitSafeAreas(gs_vertbuffer_t **actionSafeMargin, gs_vertbuffer_t **graphicsSafeMargin,
- gs_vertbuffer_t **fourByThreeSafeMargin, gs_vertbuffer_t **leftLine,
- gs_vertbuffer_t **topLine, gs_vertbuffer_t **rightLine)
- {
- obs_enter_graphics();
- // All essential action should be placed inside this area
- gs_render_start(true);
- gs_vertex2f(ACTION_SAFE_PERCENT, ACTION_SAFE_PERCENT);
- gs_vertex2f(ACTION_SAFE_PERCENT, 1 - ACTION_SAFE_PERCENT);
- gs_vertex2f(1 - ACTION_SAFE_PERCENT, 1 - ACTION_SAFE_PERCENT);
- gs_vertex2f(1 - ACTION_SAFE_PERCENT, ACTION_SAFE_PERCENT);
- gs_vertex2f(ACTION_SAFE_PERCENT, ACTION_SAFE_PERCENT);
- *actionSafeMargin = gs_render_save();
- // All graphics should be placed inside this area
- gs_render_start(true);
- gs_vertex2f(GRAPHICS_SAFE_PERCENT, GRAPHICS_SAFE_PERCENT);
- gs_vertex2f(GRAPHICS_SAFE_PERCENT, 1 - GRAPHICS_SAFE_PERCENT);
- gs_vertex2f(1 - GRAPHICS_SAFE_PERCENT, 1 - GRAPHICS_SAFE_PERCENT);
- gs_vertex2f(1 - GRAPHICS_SAFE_PERCENT, GRAPHICS_SAFE_PERCENT);
- gs_vertex2f(GRAPHICS_SAFE_PERCENT, GRAPHICS_SAFE_PERCENT);
- *graphicsSafeMargin = gs_render_save();
- // 4:3 safe area for widescreen
- gs_render_start(true);
- gs_vertex2f(FOURBYTHREE_SAFE_PERCENT, GRAPHICS_SAFE_PERCENT);
- gs_vertex2f(1 - FOURBYTHREE_SAFE_PERCENT, GRAPHICS_SAFE_PERCENT);
- gs_vertex2f(1 - FOURBYTHREE_SAFE_PERCENT, 1 - GRAPHICS_SAFE_PERCENT);
- gs_vertex2f(FOURBYTHREE_SAFE_PERCENT, 1 - GRAPHICS_SAFE_PERCENT);
- gs_vertex2f(FOURBYTHREE_SAFE_PERCENT, GRAPHICS_SAFE_PERCENT);
- *fourByThreeSafeMargin = gs_render_save();
- gs_render_start(true);
- gs_vertex2f(0.0f, 0.5f);
- gs_vertex2f(LINE_LENGTH, 0.5f);
- *leftLine = gs_render_save();
- gs_render_start(true);
- gs_vertex2f(0.5f, 0.0f);
- gs_vertex2f(0.5f, LINE_LENGTH);
- *topLine = gs_render_save();
- gs_render_start(true);
- gs_vertex2f(1.0f, 0.5f);
- gs_vertex2f(1 - LINE_LENGTH, 0.5f);
- *rightLine = gs_render_save();
- obs_leave_graphics();
- }
- static inline void RenderSafeAreas(gs_vertbuffer_t *vb, int cx, int cy)
- {
- if (!vb)
- return;
- matrix4 transform;
- matrix4_identity(&transform);
- transform.x.x = cx;
- transform.y.y = cy;
- gs_load_vertexbuffer(vb);
- gs_matrix_push();
- gs_matrix_mul(&transform);
- gs_effect_t *solid = obs_get_base_effect(OBS_EFFECT_SOLID);
- gs_eparam_t *color = gs_effect_get_param_by_name(solid, "color");
- gs_effect_set_color(color, OUTLINE_COLOR);
- while (gs_effect_loop(solid, "Solid"))
- gs_draw(GS_LINESTRIP, 0, 0);
- gs_matrix_pop();
- }
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