Enum ffmpeg_sys_next::AVDevToAppMessageType

#[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,
}

Message types used by avdevice_dev_to_app_control_message().

Variants

AV_DEV_TO_APP_NONE

Dummy message.

AV_DEV_TO_APP_CREATE_WINDOW_BUFFER

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.

AV_DEV_TO_APP_PREPARE_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.

AV_DEV_TO_APP_DISPLAY_WINDOW_BUFFER

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.

AV_DEV_TO_APP_DESTROY_WINDOW_BUFFER

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.

AV_DEV_TO_APP_BUFFER_OVERFLOW

Buffer fullness status messages.

Device signals buffer overflow/underflow.

data: NULL.

AV_DEV_TO_APP_BUFFER_UNDERFLOW

Buffer fullness status messages.

Device signals buffer overflow/underflow.

data: NULL.

AV_DEV_TO_APP_BUFFER_READABLE

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.

AV_DEV_TO_APP_BUFFER_WRITABLE

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.

AV_DEV_TO_APP_MUTE_STATE_CHANGED

Mute state change message.

Device informs that mute state has changed.

data: int: 0 for not muted state, non-zero for muted state.

AV_DEV_TO_APP_VOLUME_LEVEL_CHANGED

Volume level change message.

Device informs that volume level has changed.

data: double: new volume with range of 0.0 - 1.0.

Trait Implementations

impl Clone for AVDevToAppMessageType

fn clone(&self) -> AVDevToAppMessageType

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AVDevToAppMessageType

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Hash for AVDevToAppMessageType

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl PartialEq<AVDevToAppMessageType> for AVDevToAppMessageType

fn eq(&self, other: &AVDevToAppMessageType) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=.

impl Copy for AVDevToAppMessageType

impl Eq for AVDevToAppMessageType

impl StructuralEq for AVDevToAppMessageType

impl StructuralPartialEq for AVDevToAppMessageType