515f44be8e
Originally, the rendering system was designed to only display sources and such, but I realized there would be a flaw; if you wanted to render the main viewport in a custom way, or maybe even the entire application as a graphics-based front end, you wouldn't have been able to do that. Displays have now been separated in to viewports and displays. A viewport is used to store and draw sources, a display is used to handle draw callbacks. You can even use displays without using viewports to draw custom render displays containing graphics calls if you wish, but usually they would be used in combination with source viewports at least. This requires a tiny bit more work to create simple source displays, but in the end its worth it for the added flexibility and options it brings.
248 lines
7.8 KiB
C
248 lines
7.8 KiB
C
/******************************************************************************
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Copyright (C) 2013-2014 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 2 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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#pragma once
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#include "util/c99defs.h"
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#include "util/darray.h"
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#include "util/dstr.h"
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#include "util/threading.h"
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#include "callback/signal.h"
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#include "callback/proc.h"
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#include "graphics/graphics.h"
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#include "media-io/audio-resampler.h"
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#include "media-io/video-io.h"
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#include "media-io/audio-io.h"
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#include "obs.h"
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#define NUM_TEXTURES 2
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struct draw_callback {
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void (*draw)(void *param, uint32_t cx, uint32_t cy);
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void *param;
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};
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/* ------------------------------------------------------------------------- */
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/* modules */
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struct obs_module {
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char *name;
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void *module;
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};
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extern void free_module(struct obs_module *mod);
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/* ------------------------------------------------------------------------- */
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/* viewports */
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struct obs_viewport {
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pthread_mutex_t channels_mutex;
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obs_source_t channels[MAX_CHANNELS];
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};
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extern bool obs_viewport_init(struct obs_viewport *viewport);
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extern void obs_viewport_free(struct obs_viewport *viewport);
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/* ------------------------------------------------------------------------- */
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/* displays */
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struct obs_display {
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bool size_changed;
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uint32_t cx, cy;
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swapchain_t swap;
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pthread_mutex_t draw_callbacks_mutex;
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DARRAY(struct draw_callback) draw_callbacks;
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};
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extern bool obs_display_init(struct obs_display *display,
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struct gs_init_data *graphics_data);
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extern void obs_display_free(struct obs_display *display);
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/* ------------------------------------------------------------------------- */
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/* core */
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struct obs_core_video {
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graphics_t graphics;
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stagesurf_t copy_surfaces[NUM_TEXTURES];
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texture_t render_textures[NUM_TEXTURES];
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texture_t output_textures[NUM_TEXTURES];
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bool textures_rendered[NUM_TEXTURES];
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bool textures_output[NUM_TEXTURES];
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bool textures_copied[NUM_TEXTURES];
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struct source_frame convert_frames[NUM_TEXTURES];
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effect_t default_effect;
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stagesurf_t mapped_surface;
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int cur_texture;
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video_t video;
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pthread_t video_thread;
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bool thread_initialized;
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uint32_t base_width;
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uint32_t base_height;
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struct obs_display main_display;
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};
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struct obs_core_audio {
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/* TODO: sound output subsystem */
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audio_t audio;
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};
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/* user sources, output channels, and displays */
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struct obs_core_data {
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/* arrays of pointers jim? you should really stop being lazy and use
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* linked lists. */
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DARRAY(struct obs_display*) displays;
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DARRAY(struct obs_source*) sources;
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DARRAY(struct obs_output*) outputs;
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DARRAY(struct obs_encoder*) encoders;
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pthread_mutex_t sources_mutex;
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pthread_mutex_t displays_mutex;
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pthread_mutex_t outputs_mutex;
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pthread_mutex_t encoders_mutex;
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struct obs_viewport main_viewport;
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volatile bool valid;
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};
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struct obs_core {
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DARRAY(struct obs_module) modules;
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DARRAY(struct obs_source_info) input_types;
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DARRAY(struct obs_source_info) filter_types;
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DARRAY(struct obs_source_info) transition_types;
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DARRAY(struct obs_output_info) output_types;
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DARRAY(struct obs_encoder_info) encoder_types;
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DARRAY(struct obs_service_info) service_types;
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DARRAY(struct obs_modal_ui) modal_ui_callbacks;
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DARRAY(struct obs_modeless_ui) modeless_ui_callbacks;
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signal_handler_t signals;
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proc_handler_t procs;
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/* segmented into multiple sub-structures to keep things a bit more
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* clean and organized */
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struct obs_core_video video;
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struct obs_core_audio audio;
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struct obs_core_data data;
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};
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extern struct obs_core *obs;
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extern void *obs_video_thread(void *param);
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/* ------------------------------------------------------------------------- */
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/* sources */
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struct obs_source {
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volatile int refs;
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struct obs_source_info info;
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/* source-specific data */
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char *name; /* user-defined name */
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enum obs_source_type type;
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obs_data_t settings;
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void *data;
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signal_handler_t signals;
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proc_handler_t procs;
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/* used to indicate that the source has been removed and all
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* references to it should be released (not exactly how I would prefer
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* to handle things but it's the best option) */
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bool removed;
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/* timing (if video is present, is based upon video) */
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volatile bool timing_set;
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volatile uint64_t timing_adjust;
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volatile int audio_reset_ref;
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uint64_t next_audio_ts_min;
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uint64_t last_frame_ts;
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uint64_t last_sys_timestamp;
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/* audio */
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bool audio_failed;
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struct resample_info sample_info;
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audio_resampler_t resampler;
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audio_line_t audio_line;
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pthread_mutex_t audio_mutex;
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struct filtered_audio audio_data;
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size_t audio_storage_size;
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float volume;
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/* async video data */
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texture_t output_texture;
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DARRAY(struct source_frame*) video_frames;
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pthread_mutex_t video_mutex;
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/* filters */
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struct obs_source *filter_parent;
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struct obs_source *filter_target;
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DARRAY(struct obs_source*) filters;
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pthread_mutex_t filter_mutex;
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texrender_t filter_texrender;
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bool rendering_filter;
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};
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bool obs_source_init_handlers(struct obs_source *source);
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extern bool obs_source_init(struct obs_source *source,
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const struct obs_source_info *info);
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extern void obs_source_activate(obs_source_t source);
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extern void obs_source_deactivate(obs_source_t source);
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extern void obs_source_video_tick(obs_source_t source, float seconds);
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/* ------------------------------------------------------------------------- */
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/* outputs */
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struct obs_output {
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char *name;
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void *data;
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struct obs_output_info info;
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obs_data_t settings;
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};
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/* ------------------------------------------------------------------------- */
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/* encoders */
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struct encoder_callback {
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void (*new_packet)(void *param, struct encoder_packet *packet);
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void *param;
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};
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struct obs_encoder {
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char *name;
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void *data;
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struct obs_encoder_info info;
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obs_data_t settings;
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pthread_mutex_t data_callbacks_mutex;
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DARRAY(struct encoder_callback) data_callbacks;
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};
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