Enum ffmpeg_sys_next::AVDevToAppMessageType [−][src]
#[repr(u32)] pub enum AVDevToAppMessageType { AV_DEV_TO_APP_NONE, AV_DEV_TO_APP_CREATE_WINDOW_BUFFER, AV_DEV_TO_APP_PREPARE_WINDOW_BUFFER, AV_DEV_TO_APP_DISPLAY_WINDOW_BUFFER, AV_DEV_TO_APP_DESTROY_WINDOW_BUFFER, AV_DEV_TO_APP_BUFFER_OVERFLOW, AV_DEV_TO_APP_BUFFER_UNDERFLOW, AV_DEV_TO_APP_BUFFER_READABLE, AV_DEV_TO_APP_BUFFER_WRITABLE, AV_DEV_TO_APP_MUTE_STATE_CHANGED, AV_DEV_TO_APP_VOLUME_LEVEL_CHANGED, }
Expand description
Message types used by avdevice_dev_to_app_control_message().
Variants
Dummy message.
Create window buffer message.
Device requests to create a window buffer. Exact meaning is device- and application-dependent. Message is sent before rendering first frame and all one-shot initializations should be done here. Application is allowed to ignore preferred window buffer size.
@note: Application is obligated to inform about window buffer size with AV_APP_TO_DEV_WINDOW_SIZE message.
data: AVDeviceRect: preferred size of the window buffer. NULL: no preferred size of the window buffer.
Prepare window buffer message.
Device requests to prepare a window buffer for rendering. Exact meaning is device- and application-dependent. Message is sent before rendering of each frame.
data: NULL.
Display window buffer message.
Device requests to display a window buffer. Message is sent when new frame is ready to be displayed. Usually buffers need to be swapped in handler of this message.
data: NULL.
Destroy window buffer message.
Device requests to destroy a window buffer. Message is sent when device is about to be destroyed and window buffer is not required anymore.
data: NULL.
Buffer fullness status messages.
Device signals buffer overflow/underflow.
data: NULL.
Buffer fullness status messages.
Device signals buffer overflow/underflow.
data: NULL.
Buffer readable/writable.
Device informs that buffer is readable/writable. When possible, device informs how many bytes can be read/write.
@warning Device may not inform when number of bytes than can be read/write changes.
data: int64_t: amount of bytes available to read/write. NULL: amount of bytes available to read/write is not known.
Buffer readable/writable.
Device informs that buffer is readable/writable. When possible, device informs how many bytes can be read/write.
@warning Device may not inform when number of bytes than can be read/write changes.
data: int64_t: amount of bytes available to read/write. NULL: amount of bytes available to read/write is not known.
Mute state change message.
Device informs that mute state has changed.
data: int: 0 for not muted state, non-zero for muted state.
Volume level change message.
Device informs that volume level has changed.
data: double: new volume with range of 0.0 - 1.0.
Trait Implementations
Auto Trait Implementations
impl RefUnwindSafe for AVDevToAppMessageType
impl Send for AVDevToAppMessageType
impl Sync for AVDevToAppMessageType
impl Unpin for AVDevToAppMessageType
impl UnwindSafe for AVDevToAppMessageType
Blanket Implementations
Mutably borrows from an owned value. Read more