直播源网站(OBS)

OBSOBS 是一个开源的视频直播软件功能很强大,B站 快手 抖音 直播软件大都以此为基础,进行二次开发,或深度借鉴OBS进行开发。OBS开发中,会常用到很多内部定义的源,本文将各种源枚举下,以方便查找。OBS很多函数 是以源id为参数的, id,是定义在源的导出接口中的比如struct obs_source_info window_capture_info = {
.id = "window_capture",
.type = OBS_SOURCE_TYPE_INPUT,
.output_flags = OBS_SOURCE_VIDEO | OBS_SOURCE_CUSTOM_DRAW,
.get_name = wc_getname,
.create = wc_create,
.destroy = wc_destroy,
.update = wc_update,
.video_render = wc_render,
.video_tick = wc_tick,
.get_width = wc_width,
.get_height = wc_height,
.get_defaults = wc_defaults,
.get_properties = wc_properties
};OBS有哪些源ID呢,在此列举下:ID nameimage_source 图像color_source 色源slideshow 图像幻灯片放映ffmpeg_source 媒体源text_gdiplus 文本 (GDI+)text_ft2_source 文本 (FreeType 2)monitor_capture 显示器捕获window_capture 窗口捕获game_capture 游戏捕获dshow_input 视频捕获设备wasapi_input_capture 音频输入捕获wasapi_output_capture 音频输出捕获img_TransImg 透明图 —–自定义的比如 右键 添加按钮,会添加各种源,所用的相关API接口如下:/**
 * Enumerates all available inputs source types.
 *
 *   Inputs are general source inputs (such as capture sources, device sources,
 * etc).
 */
EXPORT bool obs_enum_input_types(size_t idx, const char **id);/** Returns the translated display name of a source */
EXPORT const char *obs_source_get_display_name(const char *id);/** Returns capability flags of a source */
EXPORT uint32_t obs_source_get_output_flags(const obs_source_t *source);

/** Returns capability flags of a source type */
EXPORT uint32_t obs_get_source_output_flags(const char *id);右键菜单代码,遍历源IDQMenu *OBSBasic::CreateAddSourcePopupMenu() const char *type;
size_t idx = 0;

while (obs_enum_input_types(idx++, &type)) {
const char *name = obs_source_get_display_name(type);
uint32_t caps = obs_get_source_output_flags(type);
//…
if (strcmp(type, "image_source") == 0 || strcmp(type, "monitor_capture") == 0 || strcmp(type, "dshow_input") == 0) //…
{
if ((caps & OBS_SOURCE_DEPRECATED) == 0) {
addSource(popup, type, name);
//addSource(popup, type, name);
}
else {
addSource(deprecated, type, name);
foundDeprecated = true;
}
foundValues = true;
}

}

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