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obs.c
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/******************************************************************************
Copyright (C) 2013-2014 by Hugh Bailey <obs.jim@gmail.com>
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/>.
******************************************************************************/
#include <inttypes.h>
#include "graphics/matrix4.h"
#include "callback/calldata.h"
#include "obs.h"
#include "obs-internal.h"
struct obs_core *obs = NULL;
static THREAD_LOCAL bool is_ui_thread = false;
extern void add_default_module_paths(void);
extern char *find_libobs_data_file(const char *file);
static inline void make_video_info(struct video_output_info *vi,
struct obs_video_info *ovi)
{
vi->name = "video";
vi->format = ovi->output_format;
vi->fps_num = ovi->fps_num;
vi->fps_den = ovi->fps_den;
vi->width = ovi->output_width;
vi->height = ovi->output_height;
vi->range = ovi->range;
vi->colorspace = ovi->colorspace;
vi->cache_size = 6;
}
static inline void calc_gpu_conversion_sizes(const struct obs_video_info *ovi)
{
struct obs_core_video *video = &obs->video;
video->conversion_needed = false;
video->conversion_techs[0] = NULL;
video->conversion_techs[1] = NULL;
video->conversion_techs[2] = NULL;
video->conversion_width_i = 0.f;
switch ((uint32_t)ovi->output_format) {
case VIDEO_FORMAT_I420:
video->conversion_needed = true;
video->conversion_techs[0] = "Planar_Y";
video->conversion_techs[1] = "Planar_U_Left";
video->conversion_techs[2] = "Planar_V_Left";
video->conversion_width_i = 1.f / (float)ovi->output_width;
break;
case VIDEO_FORMAT_NV12:
video->conversion_needed = true;
video->conversion_techs[0] = "NV12_Y";
video->conversion_techs[1] = "NV12_UV";
video->conversion_width_i = 1.f / (float)ovi->output_width;
break;
case VIDEO_FORMAT_I444:
video->conversion_needed = true;
video->conversion_techs[0] = "Planar_Y";
video->conversion_techs[1] = "Planar_U";
video->conversion_techs[2] = "Planar_V";
break;
}
}
static bool obs_init_gpu_conversion(struct obs_video_info *ovi)
{
struct obs_core_video *video = &obs->video;
calc_gpu_conversion_sizes(ovi);
video->using_nv12_tex = ovi->output_format == VIDEO_FORMAT_NV12
? gs_nv12_available()
: false;
if (!video->conversion_needed) {
blog(LOG_INFO, "GPU conversion not available for format: %u",
(unsigned int)ovi->output_format);
video->gpu_conversion = false;
video->using_nv12_tex = false;
blog(LOG_INFO, "NV12 texture support not available");
return true;
}
if (video->using_nv12_tex)
blog(LOG_INFO, "NV12 texture support enabled");
else
blog(LOG_INFO, "NV12 texture support not available");
#ifdef _WIN32
if (video->using_nv12_tex) {
gs_texture_create_nv12(&video->convert_textures[0],
&video->convert_textures[1],
ovi->output_width, ovi->output_height,
GS_RENDER_TARGET | GS_SHARED_KM_TEX);
} else {
#endif
video->convert_textures[0] =
gs_texture_create(ovi->output_width, ovi->output_height,
GS_R8, 1, NULL, GS_RENDER_TARGET);
const struct video_output_info *info =
video_output_get_info(video->video);
switch (info->format) {
case VIDEO_FORMAT_I420:
video->convert_textures[1] = gs_texture_create(
ovi->output_width / 2, ovi->output_height / 2,
GS_R8, 1, NULL, GS_RENDER_TARGET);
video->convert_textures[2] = gs_texture_create(
ovi->output_width / 2, ovi->output_height / 2,
GS_R8, 1, NULL, GS_RENDER_TARGET);
if (!video->convert_textures[2])
return false;
break;
case VIDEO_FORMAT_NV12:
video->convert_textures[1] = gs_texture_create(
ovi->output_width / 2, ovi->output_height / 2,
GS_R8G8, 1, NULL, GS_RENDER_TARGET);
break;
case VIDEO_FORMAT_I444:
video->convert_textures[1] = gs_texture_create(
ovi->output_width, ovi->output_height, GS_R8, 1,
NULL, GS_RENDER_TARGET);
video->convert_textures[2] = gs_texture_create(
ovi->output_width, ovi->output_height, GS_R8, 1,
NULL, GS_RENDER_TARGET);
if (!video->convert_textures[2])
return false;
break;
default:
break;
}
#ifdef _WIN32
}
#endif
if (!video->convert_textures[0])
return false;
if (!video->convert_textures[1])
return false;
return true;
}
static bool obs_init_gpu_copy_surfaces(struct obs_video_info *ovi, size_t i)
{
struct obs_core_video *video = &obs->video;
video->copy_surfaces[i][0] = gs_stagesurface_create(
ovi->output_width, ovi->output_height, GS_R8);
if (!video->copy_surfaces[i][0])
return false;
const struct video_output_info *info =
video_output_get_info(video->video);
switch (info->format) {
case VIDEO_FORMAT_I420:
video->copy_surfaces[i][1] = gs_stagesurface_create(
ovi->output_width / 2, ovi->output_height / 2, GS_R8);
if (!video->copy_surfaces[i][1])
return false;
video->copy_surfaces[i][2] = gs_stagesurface_create(
ovi->output_width / 2, ovi->output_height / 2, GS_R8);
if (!video->copy_surfaces[i][2])
return false;
break;
case VIDEO_FORMAT_NV12:
video->copy_surfaces[i][1] = gs_stagesurface_create(
ovi->output_width / 2, ovi->output_height / 2, GS_R8G8);
if (!video->copy_surfaces[i][1])
return false;
break;
case VIDEO_FORMAT_I444:
video->copy_surfaces[i][1] = gs_stagesurface_create(
ovi->output_width, ovi->output_height, GS_R8);
if (!video->copy_surfaces[i][1])
return false;
video->copy_surfaces[i][2] = gs_stagesurface_create(
ovi->output_width, ovi->output_height, GS_R8);
if (!video->copy_surfaces[i][2])
return false;
break;
default:
break;
}
return true;
}
static bool obs_init_textures(struct obs_video_info *ovi)
{
struct obs_core_video *video = &obs->video;
for (size_t i = 0; i < NUM_TEXTURES; i++) {
#ifdef _WIN32
if (video->using_nv12_tex) {
video->copy_surfaces[i][0] =
gs_stagesurface_create_nv12(ovi->output_width,
ovi->output_height);
if (!video->copy_surfaces[i][0])
return false;
} else {
#endif
if (video->gpu_conversion) {
if (!obs_init_gpu_copy_surfaces(ovi, i))
return false;
} else {
video->copy_surfaces[i][0] =
gs_stagesurface_create(
ovi->output_width,
ovi->output_height, GS_RGBA);
if (!video->copy_surfaces[i][0])
return false;
}
#ifdef _WIN32
}
#endif
}
video->render_texture = gs_texture_create(ovi->base_width,
ovi->base_height, GS_RGBA, 1,
NULL, GS_RENDER_TARGET);
if (!video->render_texture)
return false;
video->output_texture = gs_texture_create(ovi->output_width,
ovi->output_height, GS_RGBA,
1, NULL, GS_RENDER_TARGET);
if (!video->output_texture)
return false;
return true;
}
gs_effect_t *obs_load_effect(gs_effect_t **effect, const char *file)
{
if (!*effect) {
char *filename = obs_find_data_file(file);
*effect = gs_effect_create_from_file(filename, NULL);
bfree(filename);
}
return *effect;
}
static int obs_init_graphics(struct obs_video_info *ovi)
{
struct obs_core_video *video = &obs->video;
uint8_t transparent_tex_data[2 * 2 * 4] = {0};
const uint8_t *transparent_tex = transparent_tex_data;
struct gs_sampler_info point_sampler = {0};
bool success = true;
int errorcode;
errorcode =
gs_create(&video->graphics, ovi->graphics_module, ovi->adapter);
if (errorcode != GS_SUCCESS) {
switch (errorcode) {
case GS_ERROR_MODULE_NOT_FOUND:
return OBS_VIDEO_MODULE_NOT_FOUND;
case GS_ERROR_NOT_SUPPORTED:
return OBS_VIDEO_NOT_SUPPORTED;
default:
return OBS_VIDEO_FAIL;
}
}
gs_enter_context(video->graphics);
char *filename = obs_find_data_file("default.effect");
video->default_effect = gs_effect_create_from_file(filename, NULL);
bfree(filename);
if (gs_get_device_type() == GS_DEVICE_OPENGL) {
filename = obs_find_data_file("default_rect.effect");
video->default_rect_effect =
gs_effect_create_from_file(filename, NULL);
bfree(filename);
}
filename = obs_find_data_file("opaque.effect");
video->opaque_effect = gs_effect_create_from_file(filename, NULL);
bfree(filename);
filename = obs_find_data_file("solid.effect");
video->solid_effect = gs_effect_create_from_file(filename, NULL);
bfree(filename);
filename = obs_find_data_file("repeat.effect");
video->repeat_effect = gs_effect_create_from_file(filename, NULL);
bfree(filename);
filename = obs_find_data_file("format_conversion.effect");
video->conversion_effect = gs_effect_create_from_file(filename, NULL);
bfree(filename);
filename = obs_find_data_file("bicubic_scale.effect");
video->bicubic_effect = gs_effect_create_from_file(filename, NULL);
bfree(filename);
filename = obs_find_data_file("lanczos_scale.effect");
video->lanczos_effect = gs_effect_create_from_file(filename, NULL);
bfree(filename);
filename = obs_find_data_file("area.effect");
video->area_effect = gs_effect_create_from_file(filename, NULL);
bfree(filename);
filename = obs_find_data_file("bilinear_lowres_scale.effect");
video->bilinear_lowres_effect =
gs_effect_create_from_file(filename, NULL);
bfree(filename);
filename = obs_find_data_file("premultiplied_alpha.effect");
video->premultiplied_alpha_effect =
gs_effect_create_from_file(filename, NULL);
bfree(filename);
point_sampler.max_anisotropy = 1;
video->point_sampler = gs_samplerstate_create(&point_sampler);
obs->video.transparent_texture =
gs_texture_create(2, 2, GS_RGBA, 1, &transparent_tex, 0);
if (!video->default_effect)
success = false;
if (gs_get_device_type() == GS_DEVICE_OPENGL) {
if (!video->default_rect_effect)
success = false;
}
if (!video->opaque_effect)
success = false;
if (!video->solid_effect)
success = false;
if (!video->conversion_effect)
success = false;
if (!video->premultiplied_alpha_effect)
success = false;
if (!video->transparent_texture)
success = false;
if (!video->point_sampler)
success = false;
gs_leave_context();
return success ? OBS_VIDEO_SUCCESS : OBS_VIDEO_FAIL;
}
static inline void set_video_matrix(struct obs_core_video *video,
struct obs_video_info *ovi)
{
struct matrix4 mat;
struct vec4 r_row;
if (format_is_yuv(ovi->output_format)) {
video_format_get_parameters(ovi->colorspace, ovi->range,
(float *)&mat, NULL, NULL);
matrix4_inv(&mat, &mat);
/* swap R and G */
r_row = mat.x;
mat.x = mat.y;
mat.y = r_row;
} else {
matrix4_identity(&mat);
}
memcpy(video->color_matrix, &mat, sizeof(float) * 16);
}
static int obs_init_video(struct obs_video_info *ovi)
{
struct obs_core_video *video = &obs->video;
struct video_output_info vi;
int errorcode;
make_video_info(&vi, ovi);
video->base_width = ovi->base_width;
video->base_height = ovi->base_height;
video->output_width = ovi->output_width;
video->output_height = ovi->output_height;
video->gpu_conversion = ovi->gpu_conversion;
video->scale_type = ovi->scale_type;
set_video_matrix(video, ovi);
errorcode = video_output_open(&video->video, &vi);
if (errorcode != VIDEO_OUTPUT_SUCCESS) {
if (errorcode == VIDEO_OUTPUT_INVALIDPARAM) {
blog(LOG_ERROR, "Invalid video parameters specified");
return OBS_VIDEO_INVALID_PARAM;
} else {
blog(LOG_ERROR, "Could not open video output");
}
return OBS_VIDEO_FAIL;
}
gs_enter_context(video->graphics);
if (ovi->gpu_conversion && !obs_init_gpu_conversion(ovi))
return OBS_VIDEO_FAIL;
if (!obs_init_textures(ovi))
return OBS_VIDEO_FAIL;
gs_leave_context();
if (pthread_mutex_init(&video->gpu_encoder_mutex, NULL) < 0)
return OBS_VIDEO_FAIL;
if (pthread_mutex_init(&video->task_mutex, NULL) < 0)
return OBS_VIDEO_FAIL;
#ifdef __APPLE__
errorcode = pthread_create(&video->video_thread, NULL,
obs_graphics_thread_autorelease, obs);
#else
errorcode = pthread_create(&video->video_thread, NULL,
obs_graphics_thread, obs);
#endif
if (errorcode != 0)
return OBS_VIDEO_FAIL;
video->thread_initialized = true;
video->ovi = *ovi;
return OBS_VIDEO_SUCCESS;
}
static void stop_video(void)
{
struct obs_core_video *video = &obs->video;
void *thread_retval;
if (video->video) {
video_output_stop(video->video);
if (video->thread_initialized) {
pthread_join(video->video_thread, &thread_retval);
video->thread_initialized = false;
}
}
}
static void obs_free_video(void)
{
struct obs_core_video *video = &obs->video;
if (video->video) {
video_output_close(video->video);
video->video = NULL;
if (!video->graphics)
return;
gs_enter_context(video->graphics);
for (size_t c = 0; c < NUM_CHANNELS; c++) {
if (video->mapped_surfaces[c]) {
gs_stagesurface_unmap(
video->mapped_surfaces[c]);
video->mapped_surfaces[c] = NULL;
}
}
for (size_t i = 0; i < NUM_TEXTURES; i++) {
for (size_t c = 0; c < NUM_CHANNELS; c++) {
if (video->copy_surfaces[i][c]) {
gs_stagesurface_destroy(
video->copy_surfaces[i][c]);
video->copy_surfaces[i][c] = NULL;
}
}
}
gs_texture_destroy(video->render_texture);
for (size_t c = 0; c < NUM_CHANNELS; c++) {
if (video->convert_textures[c]) {
gs_texture_destroy(video->convert_textures[c]);
video->convert_textures[c] = NULL;
}
}
for (size_t i = 0; i < NUM_TEXTURES; i++) {
for (size_t c = 0; c < NUM_CHANNELS; c++) {
if (video->copy_surfaces[i][c]) {
gs_stagesurface_destroy(
video->copy_surfaces[i][c]);
video->copy_surfaces[i][c] = NULL;
}
}
}
gs_texture_destroy(video->output_texture);
video->render_texture = NULL;
video->output_texture = NULL;
gs_leave_context();
circlebuf_free(&video->vframe_info_buffer);
circlebuf_free(&video->vframe_info_buffer_gpu);
video->texture_rendered = false;
memset(video->textures_copied, 0,
sizeof(video->textures_copied));
video->texture_converted = false;
pthread_mutex_destroy(&video->gpu_encoder_mutex);
pthread_mutex_init_value(&video->gpu_encoder_mutex);
da_free(video->gpu_encoders);
pthread_mutex_destroy(&video->task_mutex);
pthread_mutex_init_value(&video->task_mutex);
circlebuf_free(&video->tasks);
video->gpu_encoder_active = 0;
video->cur_texture = 0;
}
}
static void obs_free_graphics(void)
{
struct obs_core_video *video = &obs->video;
if (video->graphics) {
gs_enter_context(video->graphics);
gs_texture_destroy(video->transparent_texture);
gs_samplerstate_destroy(video->point_sampler);
gs_effect_destroy(video->default_effect);
gs_effect_destroy(video->default_rect_effect);
gs_effect_destroy(video->opaque_effect);
gs_effect_destroy(video->solid_effect);
gs_effect_destroy(video->conversion_effect);
gs_effect_destroy(video->bicubic_effect);
gs_effect_destroy(video->repeat_effect);
gs_effect_destroy(video->lanczos_effect);
gs_effect_destroy(video->area_effect);
gs_effect_destroy(video->bilinear_lowres_effect);
video->default_effect = NULL;
gs_leave_context();
gs_destroy(video->graphics);
video->graphics = NULL;
}
}
static void set_audio_thread(void *unused);
static bool obs_init_audio(struct audio_output_info *ai)
{
struct obs_core_audio *audio = &obs->audio;
int errorcode;
pthread_mutex_init_value(&audio->monitoring_mutex);
if (pthread_mutex_init_recursive(&audio->monitoring_mutex) != 0)
return false;
if (pthread_mutex_init(&audio->task_mutex, NULL) != 0)
return false;
struct obs_task_info audio_init = {.task = set_audio_thread};
circlebuf_push_back(&audio->tasks, &audio_init, sizeof(audio_init));
audio->user_volume = 1.0f;
audio->monitoring_device_name = bstrdup("Default");
audio->monitoring_device_id = bstrdup("default");
errorcode = audio_output_open(&audio->audio, ai);
if (errorcode == AUDIO_OUTPUT_SUCCESS)
return true;
else if (errorcode == AUDIO_OUTPUT_INVALIDPARAM)
blog(LOG_ERROR, "Invalid audio parameters specified");
else
blog(LOG_ERROR, "Could not open audio output");
return false;
}
static void stop_audio(void)
{
struct obs_core_audio *audio = &obs->audio;
if (audio->audio) {
audio_output_close(audio->audio);
audio->audio = NULL;
}
}
static void obs_free_audio(void)
{
struct obs_core_audio *audio = &obs->audio;
if (audio->audio)
audio_output_close(audio->audio);
circlebuf_free(&audio->buffered_timestamps);
da_free(audio->render_order);
da_free(audio->root_nodes);
da_free(audio->monitors);
bfree(audio->monitoring_device_name);
bfree(audio->monitoring_device_id);
circlebuf_free(&audio->tasks);
pthread_mutex_destroy(&audio->task_mutex);
pthread_mutex_destroy(&audio->monitoring_mutex);
memset(audio, 0, sizeof(struct obs_core_audio));
}
static bool obs_init_data(void)
{
struct obs_core_data *data = &obs->data;
assert(data != NULL);
pthread_mutex_init_value(&obs->data.displays_mutex);
pthread_mutex_init_value(&obs->data.draw_callbacks_mutex);
if (pthread_mutex_init_recursive(&data->sources_mutex) != 0)
goto fail;
if (pthread_mutex_init_recursive(&data->audio_sources_mutex) != 0)
goto fail;
if (pthread_mutex_init_recursive(&data->displays_mutex) != 0)
goto fail;
if (pthread_mutex_init_recursive(&data->outputs_mutex) != 0)
goto fail;
if (pthread_mutex_init_recursive(&data->encoders_mutex) != 0)
goto fail;
if (pthread_mutex_init_recursive(&data->services_mutex) != 0)
goto fail;
if (pthread_mutex_init_recursive(&obs->data.draw_callbacks_mutex) != 0)
goto fail;
if (!obs_view_init(&data->main_view))
goto fail;
data->private_data = obs_data_create();
data->valid = true;
fail:
return data->valid;
}
void obs_main_view_free(struct obs_view *view)
{
if (!view)
return;
for (size_t i = 0; i < MAX_CHANNELS; i++)
obs_source_release(view->channels[i]);
memset(view->channels, 0, sizeof(view->channels));
pthread_mutex_destroy(&view->channels_mutex);
}
#define FREE_OBS_LINKED_LIST(type) \
do { \
int unfreed = 0; \
while (data->first_##type) { \
obs_##type##_destroy(data->first_##type); \
unfreed++; \
} \
if (unfreed) \
blog(LOG_INFO, "\t%d " #type "(s) were remaining", \
unfreed); \
} while (false)
static void obs_free_data(void)
{
struct obs_core_data *data = &obs->data;
data->valid = false;
obs_main_view_free(&data->main_view);
blog(LOG_INFO, "Freeing OBS context data");
FREE_OBS_LINKED_LIST(source);
FREE_OBS_LINKED_LIST(output);
FREE_OBS_LINKED_LIST(encoder);
FREE_OBS_LINKED_LIST(display);
FREE_OBS_LINKED_LIST(service);
pthread_mutex_destroy(&data->sources_mutex);
pthread_mutex_destroy(&data->audio_sources_mutex);
pthread_mutex_destroy(&data->displays_mutex);
pthread_mutex_destroy(&data->outputs_mutex);
pthread_mutex_destroy(&data->encoders_mutex);
pthread_mutex_destroy(&data->services_mutex);
pthread_mutex_destroy(&data->draw_callbacks_mutex);
da_free(data->draw_callbacks);
da_free(data->tick_callbacks);
obs_data_release(data->private_data);
}
static const char *obs_signals[] = {
"void source_create(ptr source)",
"void source_destroy(ptr source)",
"void source_remove(ptr source)",
"void source_save(ptr source)",
"void source_load(ptr source)",
"void source_activate(ptr source)",
"void source_deactivate(ptr source)",
"void source_show(ptr source)",
"void source_hide(ptr source)",
"void source_audio_activate(ptr source)",
"void source_audio_deactivate(ptr source)",
"void source_rename(ptr source, string new_name, string prev_name)",
"void source_volume(ptr source, in out float volume)",
"void source_volume_level(ptr source, float level, float magnitude, "
"float peak)",
"void source_transition_start(ptr source)",
"void source_transition_video_stop(ptr source)",
"void source_transition_stop(ptr source)",
"void channel_change(int channel, in out ptr source, ptr prev_source)",
"void master_volume(in out float volume)",
"void hotkey_layout_change()",
"void hotkey_register(ptr hotkey)",
"void hotkey_unregister(ptr hotkey)",
"void hotkey_bindings_changed(ptr hotkey)",
NULL,
};
static inline bool obs_init_handlers(void)
{
obs->signals = signal_handler_create();
if (!obs->signals)
return false;
obs->procs = proc_handler_create();
if (!obs->procs)
return false;
return signal_handler_add_array(obs->signals, obs_signals);
}
static pthread_once_t obs_pthread_once_init_token = PTHREAD_ONCE_INIT;
static inline bool obs_init_hotkeys(void)
{
struct obs_core_hotkeys *hotkeys = &obs->hotkeys;
bool success = false;
assert(hotkeys != NULL);
da_init(hotkeys->hotkeys);
hotkeys->signals = obs->signals;
hotkeys->name_map_init_token = obs_pthread_once_init_token;
hotkeys->mute = bstrdup("Mute");
hotkeys->unmute = bstrdup("Unmute");
hotkeys->push_to_mute = bstrdup("Push-to-mute");
hotkeys->push_to_talk = bstrdup("Push-to-talk");
hotkeys->sceneitem_show = bstrdup("Show '%1'");
hotkeys->sceneitem_hide = bstrdup("Hide '%1'");
if (!obs_hotkeys_platform_init(hotkeys))
return false;
if (pthread_mutex_init_recursive(&hotkeys->mutex) != 0)
goto fail;
if (os_event_init(&hotkeys->stop_event, OS_EVENT_TYPE_MANUAL) != 0)
goto fail;
if (pthread_create(&hotkeys->hotkey_thread, NULL, obs_hotkey_thread,
NULL))
goto fail;
hotkeys->hotkey_thread_initialized = true;
success = true;
fail:
return success;
}
static inline void stop_hotkeys(void)
{
struct obs_core_hotkeys *hotkeys = &obs->hotkeys;
void *thread_ret;
if (hotkeys->hotkey_thread_initialized) {
os_event_signal(hotkeys->stop_event);
pthread_join(hotkeys->hotkey_thread, &thread_ret);
hotkeys->hotkey_thread_initialized = false;
}
os_event_destroy(hotkeys->stop_event);
obs_hotkeys_free();
}
static inline void obs_free_hotkeys(void)
{
struct obs_core_hotkeys *hotkeys = &obs->hotkeys;
bfree(hotkeys->mute);
bfree(hotkeys->unmute);
bfree(hotkeys->push_to_mute);
bfree(hotkeys->push_to_talk);
bfree(hotkeys->sceneitem_show);
bfree(hotkeys->sceneitem_hide);
obs_hotkey_name_map_free();
obs_hotkeys_platform_free(hotkeys);
pthread_mutex_destroy(&hotkeys->mutex);
}
extern const struct obs_source_info scene_info;
extern const struct obs_source_info group_info;
static const char *submix_name(void *unused)
{
UNUSED_PARAMETER(unused);
return "Audio line (internal use only)";
}
const struct obs_source_info audio_line_info = {
.id = "audio_line",
.type = OBS_SOURCE_TYPE_INPUT,
.output_flags = OBS_SOURCE_AUDIO | OBS_SOURCE_CAP_DISABLED |
OBS_SOURCE_SUBMIX,
.get_name = submix_name,
};
extern void log_system_info(void);
static bool obs_init(const char *locale, const char *module_config_path,
profiler_name_store_t *store)
{
obs = bzalloc(sizeof(struct obs_core));
pthread_mutex_init_value(&obs->audio.monitoring_mutex);
pthread_mutex_init_value(&obs->audio.task_mutex);
pthread_mutex_init_value(&obs->video.gpu_encoder_mutex);
pthread_mutex_init_value(&obs->video.task_mutex);
obs->name_store_owned = !store;
obs->name_store = store ? store : profiler_name_store_create();
if (!obs->name_store) {
blog(LOG_ERROR, "Couldn't create profiler name store");
return false;
}
log_system_info();
if (!obs_init_data())
return false;
if (!obs_init_handlers())
return false;
if (!obs_init_hotkeys())
return false;
obs->destruction_task_thread = os_task_queue_create();
if (!obs->destruction_task_thread)
return false;
if (module_config_path)
obs->module_config_path = bstrdup(module_config_path);
obs->locale = bstrdup(locale);
obs_register_source(&scene_info);
obs_register_source(&group_info);
obs_register_source(&audio_line_info);
add_default_module_paths();
return true;
}
#ifdef _WIN32
extern bool initialize_com(void);
extern void uninitialize_com(void);
static bool com_initialized = false;
#endif
/* Separate from actual context initialization
* since this can be set before startup and persist
* after shutdown. */
static DARRAY(struct dstr) core_module_paths = {0};
char *obs_find_data_file(const char *file)
{
struct dstr path = {0};
char *result = find_libobs_data_file(file);
if (result)
return result;
for (size_t i = 0; i < core_module_paths.num; ++i) {
if (check_path(file, core_module_paths.array[i].array, &path))
return path.array;
}
dstr_free(&path);
return NULL;
}
void obs_add_data_path(const char *path)
{
struct dstr *new_path = da_push_back_new(core_module_paths);
dstr_init_copy(new_path, path);
}
bool obs_remove_data_path(const char *path)
{
for (size_t i = 0; i < core_module_paths.num; ++i) {
int result = dstr_cmp(&core_module_paths.array[i], path);
if (result == 0) {
dstr_free(&core_module_paths.array[i]);
da_erase(core_module_paths, i);
return true;
}
}
return false;
}
static const char *obs_startup_name = "obs_startup";
bool obs_startup(const char *locale, const char *module_config_path,
profiler_name_store_t *store)
{
bool success;
profile_start(obs_startup_name);
if (obs) {
blog(LOG_WARNING, "Tried to call obs_startup more than once");
return false;
}
#ifdef _WIN32
com_initialized = initialize_com();
#endif
success = obs_init(locale, module_config_path, store);
profile_end(obs_startup_name);
if (!success)
obs_shutdown();
return success;
}
static struct obs_cmdline_args cmdline_args = {0, NULL};
void obs_set_cmdline_args(int argc, const char *const *argv)
{
char *data;
size_t len;
int i;
/* Once argc is set (non-zero) we shouldn't call again */
if (cmdline_args.argc)
return;
cmdline_args.argc = argc;
/* Safely copy over argv */
len = 0;
for (i = 0; i < argc; i++)
len += strlen(argv[i]) + 1;
cmdline_args.argv = bmalloc(sizeof(char *) * (argc + 1) + len);
data = (char *)cmdline_args.argv + sizeof(char *) * (argc + 1);
for (i = 0; i < argc; i++) {
cmdline_args.argv[i] = data;
len = strlen(argv[i]) + 1;
memcpy(data, argv[i], len);
data += len;
}
cmdline_args.argv[argc] = NULL;
}
struct obs_cmdline_args obs_get_cmdline_args(void)
{
return cmdline_args;
}
void obs_shutdown(void)
{
struct obs_module *module;