diff options
Diffstat (limited to 'include/ui/egl')
| -rw-r--r-- | include/ui/egl/android_natives.h | 43 |
1 files changed, 41 insertions, 2 deletions
diff --git a/include/ui/egl/android_natives.h b/include/ui/egl/android_natives.h index 7da69b1..4c58e47 100644 --- a/include/ui/egl/android_natives.h +++ b/include/ui/egl/android_natives.h @@ -67,6 +67,11 @@ enum { NATIVE_WINDOW_FORMAT = 2, }; +/* valid operations for the (*perform)() hook */ +enum { + NATIVE_WINDOW_SET_USAGE = 0 +}; + struct android_native_window_t { #ifdef __cplusplus @@ -142,11 +147,45 @@ struct android_native_window_t * Returns 0 on success or -errno on error. */ int (*query)(struct android_native_window_t* window, - int what, int* value); + int what, int* value); + + /* + * hook used to perform various operations on the surface. + * (*perform)() is a generic mechanism to add functionality to + * android_native_window_t while keeping backward binary compatibility. + * + * This hook should not be called directly, instead use the helper functions + * defined below. + * + * The valid operations are: + * NATIVE_WINDOW_SET_USAGE + * + */ + + int (*perform)(struct android_native_window_t* window, + int operation, ... ); - void* reserved_proc[4]; + void* reserved_proc[3]; }; + +/* + * native_window_set_usage() sets the intended usage flags for the next + * buffers acquired with (*lockBuffer)() and on. + * By default (if this function is never called), a usage of + * GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_TEXTURE + * is assumed. + * Calling this function will usually cause following buffers to be + * reallocated. + */ + +inline int native_window_set_usage( + struct android_native_window_t* window, int usage) +{ + return window->perform(window, NATIVE_WINDOW_SET_USAGE, usage); +} + + // --------------------------------------------------------------------------- /* FIXME: this is legacy for pixmaps */ |