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Illusion
2024-08-06 05:50:12 +02:00
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commit ebafc90985
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native_window.odin
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@@ -1,6 +1,74 @@
//+build android
package android
/**
* Legacy window pixel format names, kept for backwards compatibility.
* New code and APIs should use AHARDWAREBUFFER_FORMAT_*.
*/
ANativeWindow_LegacyFormat :: enum {
// NOTE: these values must match the values from graphics/common/x.x/types.hal
/** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Alpha: 8 bits. **/
RGBA_8888 = AHardwareBuffer_Format.R8G8B8A8_UNORM,
/** Red: 8 bits, Green: 8 bits, Blue: 8 bits, Unused: 8 bits. **/
RGBX_8888 = AHardwareBuffer_Format.R8G8B8X8_UNORM,
/** Red: 5 bits, Green: 6 bits, Blue: 5 bits. **/
RGB_565 = AHardwareBuffer_Format.R5G6B5_UNORM,
}
/**
* Transforms that can be applied to buffers as they are displayed to a window.
*
* Supported transforms are any combination of horizontal mirror, vertical
* mirror, and clockwise 90 degree rotation, in that order. Rotations of 180
* and 270 degrees are made up of those basic transforms.
*/
ANativeWindowTransform :: enum i32 {
IDENTITY = 0x00,
MIRROR_HORIZONTAL = 0x01,
MIRROR_VERTICAL = 0x02,
ROTATE_90 = 0x04,
ROTATE_180 = MIRROR_HORIZONTAL | MIRROR_VERTICAL,
ROTATE_270 = ROTATE_180 | ROTATE_90,
}
/** Compatibility value for ANativeWindow_setFrameRate. */
ANativeWindow_FrameRateCompatibility :: enum i8 {
/**
* There are no inherent restrictions on the frame rate of this window. When
* the system selects a frame rate other than what the app requested, the
* app will be able to run at the system frame rate without requiring pull
* down. This value should be used when displaying game content, UIs, and
* anything that isn't video.
*/
DEFAULT = 0,
/**
* This window is being used to display content with an inherently fixed
* frame rate, e.g.\ a video that has a specific frame rate. When the system
* selects a frame rate other than what the app requested, the app will need
* to do pull down or use some other technique to adapt to the system's
* frame rate. The user experience is likely to be worse (e.g. more frame
* stuttering) than it would be if the system had chosen the app's requested
* frame rate. This value should be used for video content.
*/
FIXED_SOURCE = 1
}
/** Change frame rate strategy value for ANativeWindow_setFrameRate. */
// Available since API level 31.
ANativeWindow_ChangeFrameRateStrategy :: enum i8 {
/**
* Change the frame rate only if the transition is going to be seamless.
*/
ONLY_IF_SEAMLESS = 0,
/**
* Change the frame rate even if the transition is going to be non-seamless,
* i.e. with visual interruptions for the user.
*/
ALWAYS = 1
}
/**
* Opaque type that provides access to a native window.
*
@@ -8,28 +76,46 @@ package android
*/
ANativeWindow :: struct{}
/**
* Struct that represents a windows buffer.
*
* A pointer can be obtained using {@link ANativeWindow_lock()}.
*/
ANativeWindow_Buffer :: struct {
/// The number of pixels that are shown horizontally.
width: i32,
/// The number of pixels that are shown vertically.
height: i32,
/// The number of *pixels* that a line in the buffer takes in
/// memory. This may be >= width.
stride: i32,
/// The format of the buffer. One of AHardwareBuffer_Format.
// TODO: u32/i32 mismatch with the enum.
int32_t format,
/// The actual bits.
bits: rawptr,
/// Do not touch.
reserved: [6]u32,
}
foreign import android "system:android"
foreign android {
/**
* Change the format and size of the window buffers.
*
* The width and height control the number of pixels in the buffers, not the
* dimensions of the window on screen. If these are different than the
* window's physical size, then its buffer will be scaled to match that size
* when compositing it to the screen. The width and height must be either both zero
* or both non-zero.
*
* For all of these parameters, if 0 is supplied then the window's base
* value will come back in force.
*
* \param window pointer to an ANativeWindow object.
* \param width width of the buffers in pixels.
* \param height height of the buffers in pixels.
* \param format one of the AHardwareBuffer_Format constants.
* \return 0 for success, or a negative value on error.
*/
ANativeWindow_setBuffersGeometry :: proc(window: ^ANativeWindow, width: i32, height: i32, format: i32) -> i32 ---
* Acquire a reference on the given {@link ANativeWindow} object. This prevents the object
* from being deleted until the reference is removed.
*/
ANativeWindow_acquire :: proc(window: ^ANativeWindow) ---
/**
* Remove a reference that was previously acquired with {@link ANativeWindow_acquire()}.
*/
ANativeWindow_release :: proc(window: ^ANativeWindow) ---
/**
* Return the current width in pixels of the window surface.
@@ -44,4 +130,159 @@ foreign android {
* \return a negative value on error.
*/
ANativeWindow_getHeight :: proc(window: ^ANativeWindow) -> i32 ---
/**
* Return the current pixel format (AHARDWAREBUFFER_FORMAT_*) of the window surface.
*
* \return a negative value on error.
*/
// TODO: should return AHardwarebuffer_Format but i32/u32 mismatch
ANativeWindow_getFormat :: proc(window: ^ANativeWindow) -> i32 ---
/**
* Change the format and size of the window buffers.
*
* The width and height control the number of pixels in the buffers, not the
* dimensions of the window on screen. If these are different than the
* window's physical size, then its buffer will be scaled to match that size
* when compositing it to the screen. The width and height must be either both zero
* or both non-zero.
*
* For all of these parameters, if 0 is supplied then the window's base
* value will come back in force.
*
* \param window pointer to an ANativeWindow object.
* \param width width of the buffers in pixels.
* \param height height of the buffers in pixels.
* \param format one of the AHardwareBuffer_Format constants.
* \return 0 for success, or a negative value on error.
*/
ANativeWindow_setBuffersGeometry :: proc(window: ^ANativeWindow, width: i32, height: i32, format: i32) -> i32 ---
/**
* Lock the window's next drawing surface for writing.
* inOutDirtyBounds is used as an in/out parameter, upon entering the
* function, it contains the dirty region, that is, the region the caller
* intends to redraw. When the function returns, inOutDirtyBounds is updated
* with the actual area the caller needs to redraw -- this region is often
* extended by {@link ANativeWindow_lock}.
*
* \return 0 for success, or a negative value on error.
*/
ANativeWindow_lock :: proc(window: ^ANativeWindow, outBuffer: ^ANativeWindow_Buffer, inOutDirtyBounds: ^ARect) -> i32 ---
/**
* Unlock the window's drawing surface after previously locking it,
* posting the new buffer to the display.
*
* \return 0 for success, or a negative value on error.
*/
ANativeWindow_unlockAndPost :: proc(window: ^ANativeWindow) -> i32 ---
/**
* Set a transform that will be applied to future buffers posted to the window.
*
* Available since API level 26.
*
* \param window pointer to an ANativeWindow object.
* \param transform combination of {@link ANativeWindowTransform} flags
* \return 0 for success, or -EINVAL if \p transform is invalid
*/
ANativeWindow_setBuffersTransform :: proc(window: ^ANativeWindow, transform: ANativeWindowTransform) -> i32 ---
/**
* All buffers queued after this call will be associated with the dataSpace
* parameter specified.
*
* dataSpace specifies additional information about the buffer.
* For example, it can be used to convey the color space of the image data in
* the buffer, or it can be used to indicate that the buffers contain depth
* measurement data instead of color images. The default dataSpace is 0,
* ADATASPACE_UNKNOWN, unless it has been overridden by the producer.
*
* Available since API level 28.
*
* \param window pointer to an ANativeWindow object.
* \param dataSpace data space of all buffers queued after this call.
* \return 0 for success, -EINVAL if window is invalid or the dataspace is not
* supported.
*/
ANativeWindow_setBuffersDataSpace :: proc(window: ^ANativeWindow, dataSpace: ADataSpace) -> i32 ---
/**
* Get the dataspace of the buffers in window.
*
* Available since API level 28.
*
* \return the dataspace of buffers in window, ADATASPACE_UNKNOWN is returned if
* dataspace is unknown, or -EINVAL if window is invalid.
*/
ANativeWindow_getBuffersDataSpace :: proc(window: ^ANativeWindow) -> ADataSpace ---
/**
* Same as ANativeWindow_setFrameRateWithChangeStrategy(window, frameRate, compatibility,
* ANATIVEWINDOW_CHANGE_FRAME_RATE_ONLY_IF_SEAMLESS).
*
* See ANativeWindow_setFrameRateWithChangeStrategy().
*
* Available since API level 30.
*/
ANativeWindow_setFrameRate :: proc(window: ^ANativeWindow, frameRate: f32, compatibility: ANativeWindow_FrameRateCompatibility) -> i32 ---
/**
* Provides a hint to the window that buffers should be preallocated ahead of
* time. Note that the window implementation is not guaranteed to preallocate
* any buffers, for instance if an implementation disallows allocation of new
* buffers, or if there is insufficient memory in the system to preallocate
* additional buffers
*
* Available since API level 30.
*/
ANativeWindow_tryAllocateBuffers :: proc(window: ^ANativeWindow) ---
/**
* Sets the intended frame rate for this window.
*
* On devices that are capable of running the display at different refresh
* rates, the system may choose a display refresh rate to better match this
* window's frame rate. Usage of this API won't introduce frame rate throttling,
* or affect other aspects of the application's frame production
* pipeline. However, because the system may change the display refresh rate,
* calls to this function may result in changes to Choreographer callback
* timings, and changes to the time interval at which the system releases
* buffers back to the application.
*
* Note that this only has an effect for windows presented on the display. If
* this ANativeWindow is consumed by something other than the system compositor,
* e.g. a media codec, this call has no effect.
*
* You can register for changes in the refresh rate using
* \a AChoreographer_registerRefreshRateCallback.
*
* Available since API level 31.
*
* \param window pointer to an ANativeWindow object.
*
* \param frameRate The intended frame rate of this window, in frames per
* second. 0 is a special value that indicates the app will accept the system's
* choice for the display frame rate, which is the default behavior if this
* function isn't called. The frameRate param does <em>not</em> need to be a
* valid refresh rate for this device's display - e.g., it's fine to pass 30fps
* to a device that can only run the display at 60fps.
*
* \param compatibility The frame rate compatibility of this window. The
* compatibility value may influence the system's choice of display refresh
* rate. See the ANATIVEWINDOW_FRAME_RATE_COMPATIBILITY_* values for more info.
* This parameter is ignored when frameRate is 0.
*
* \param changeFrameRateStrategy Whether display refresh rate transitions caused by this
* window should be seamless.
* A seamless transition is one that doesn't have any visual interruptions, such as a black
* screen for a second or two. See the ANATIVEWINDOW_CHANGE_FRAME_RATE_* values.
* This parameter is ignored when frameRate is 0.
*
* \return 0 for success, -EINVAL if the window, frame rate, or compatibility
* value are invalid.
*/
ANativeWindow_setFrameRateWithChangeStrategy :: proc(window: ^ANativeWindow, frameRate: f32, compatibility: ANativeWindow_FrameRateCompatibility, changeFrameRateStrategy: ANativeWindow_ChangeFrameRateStrategy) -> i32 ---
}