127 lines
3.2 KiB
C
127 lines
3.2 KiB
C
/******************************************************************************
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Copyright (C) 2013 by Hugh Bailey <obs.jim@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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******************************************************************************/
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#include "obs.h"
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#include "obs-data.h"
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#include "graphics/vec4.h"
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static void tick_sources(obs_t obs, uint64_t cur_time, uint64_t *last_time)
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{
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size_t i;
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uint64_t delta_time;
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float seconds;
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if (!last_time)
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*last_time = cur_time - video_getframetime(obs->video);
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delta_time = cur_time - *last_time;
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seconds = (float)((double)delta_time / 1000000000.0);
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for (i = 0; i < obs->sources.num; i++)
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source_video_tick(obs->sources.array[i], seconds);
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*last_time = cur_time;
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}
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static inline void render_displays(obs_t obs)
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{
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size_t i;
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struct vec4 clear_color;
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vec4_set(&clear_color, 0.3f, 0.0f, 0.0f, 1.0f);
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//gs_enable_depthtest(false);
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gs_ortho(0.0f, (float)obs->output_width,
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0.0f, (float)obs->output_height,
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-100.0f, 100.0f);
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for (i = 0; i < obs->displays.num; i++) {
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display_t display = obs->displays.array[i];
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gs_load_swapchain(display->swap);
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gs_beginscene();
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gs_setviewport(0, 0, gs_getwidth(), gs_getheight());
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if (display->source)
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source_video_render(display->source);
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gs_endscene();
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gs_present();
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}
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gs_load_swapchain(NULL);
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gs_beginscene();
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gs_clear(GS_CLEAR_COLOR|GS_CLEAR_DEPTH|GS_CLEAR_STENCIL,
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&clear_color, 1.0f, 0);
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gs_setviewport(0, 0, gs_getwidth(), gs_getheight());
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if (obs->primary_source)
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source_video_render(obs->primary_source);
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gs_endscene();
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gs_present();
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}
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static bool swap_frame(obs_t obs, uint64_t timestamp)
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{
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stagesurf_t last_surface = obs->copy_surfaces[obs->cur_texture];
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stagesurf_t surface;
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struct video_frame frame;
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if (obs->copy_mapped) {
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stagesurface_unmap(last_surface);
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obs->copy_mapped = false;
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}
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obs->textures_copied[obs->cur_texture] = true;
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gs_stage_texture(last_surface, NULL);
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if (++obs->cur_texture == NUM_TEXTURES)
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obs->cur_texture = 0;
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if (obs->textures_copied[obs->cur_texture]) {
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surface = obs->copy_surfaces[obs->cur_texture];
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obs->copy_mapped = stagesurface_map(surface, &frame.data,
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&frame.row_size);
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if (obs->copy_mapped) {
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frame.timestamp = timestamp;
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video_output_frame(obs->video, &frame);
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}
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}
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return obs->copy_mapped;
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}
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void *obs_video_thread(void *param)
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{
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struct obs_data *obs = param;
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uint64_t last_time = 0;
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while (video_output_wait(obs->video)) {
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uint64_t cur_time = video_gettime(obs->video);
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tick_sources(obs, cur_time, &last_time);
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render_displays(obs);
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swap_frame(obs, cur_time);
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}
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return NULL;
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}
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