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Transition sources are implemented by registering a source type as OBS_SOURCE_TYPE_TRANSITION. They're automatically marked as video composite sources, and video_render/audio_render callbacks must be set when registering the source. get_width and get_height callbacks are unused for these types of sources, as transitions automatically handle width/height behind the scenes with the transition settings. In the video_render callback, the helper function obs_transition_video_render is used to assist in automatically processing and rendering the audio. A render callback is passed to the function, which in turn passes to/from textures that are automatically rendered in the back-end. Similarly, in the audio_render callback, the helper function obs_transition_audio_render is used to assist in automatically processing and rendering the audio. Two mix callbacks are used to handle how the source/destination sources are mixed together. To ensure the best possible quality, audio processing is per-sample. Transitions can be set to automatically resize, or they can be set to have a fixed size. Sources within transitions can be made to scale to the transition size (with or without aspect ratio), or to not scale unless they're bigger than the transition. They can have a specific alignment within the transition, or they just default to top-left. These features are implemented for the purpose of extending transitions to also act as "switch" sources later, where you can switch to/from two different sources using the transition animation. Planned (but not yet implemented and lower priority) features: - "Switch" transitions which allow the ability to switch back and forth between two sources with a transitioning animation without discarding the references - Easing options to allow the option to transition with a bezier or custom curve - Manual transitioning to allow the front-end/user to manually control the transition offset |
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| .. | ||
| callback | ||
| data | ||
| graphics | ||
| media-io | ||
| util | ||
| CMakeLists.txt | ||
| LibObsConfig.cmake.in | ||
| LibObsConfigVersion.cmake.in | ||
| obs-audio-controls.c | ||
| obs-audio-controls.h | ||
| obs-audio.c | ||
| obs-avc.c | ||
| obs-avc.h | ||
| obs-cocoa.c | ||
| obs-config.h | ||
| obs-data.c | ||
| obs-data.h | ||
| obs-defs.h | ||
| obs-display.c | ||
| obs-encoder.c | ||
| obs-encoder.h | ||
| obs-ffmpeg-compat.h | ||
| obs-hotkey-name-map.c | ||
| obs-hotkey.c | ||
| obs-hotkey.h | ||
| obs-hotkeys.h | ||
| obs-interaction.h | ||
| obs-internal.h | ||
| obs-module.c | ||
| obs-module.h | ||
| obs-nix.c | ||
| obs-output-delay.c | ||
| obs-output.c | ||
| obs-output.h | ||
| obs-properties.c | ||
| obs-properties.h | ||
| obs-scene.c | ||
| obs-scene.h | ||
| obs-service.c | ||
| obs-service.h | ||
| obs-source-transition.c | ||
| obs-source.c | ||
| obs-source.h | ||
| obs-ui.h | ||
| obs-video.c | ||
| obs-view.c | ||
| obs-win-crash-handler.c | ||
| obs-windows.c | ||
| obs.c | ||
| obs.h | ||
| obs.hpp | ||
| obsconfig.h.in | ||