weston/src/android-framebuffer.cpp
Pekka Paalanen 3ae50bb45c Add Android backend
The Android backend provides basic EGL/GLES2 graphics, where everything
is always composited. Overlays are not used. Input is stubbed, therefore
there is no input yet.

This adds the first C++ source file into Weston compositor. The Android
gralloc and fb HAL glue code to the Android EGL library is in C++, and
there is no way to access it from plain C. We have a simple wrapper to
the required C++ class API. Android forces the C++ file name extension
to .cpp.

The android backend is compiled by default. However, all Android
specific calls are protected with #ifdef ANDROID, so it will build also
without Android headers. The binary produced without the Android build
system is useless, but allows build-testing generic Weston changes.
Therefore the android backend is not installed.

Signed-off-by: Pekka Paalanen <ppaalanen@gmail.com>
2012-05-31 13:54:01 -04:00

93 lines
2.5 KiB
C++

/*
* Copyright © 2012 Collabora, Ltd.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that the above copyright notice appear in all copies and that both that
* copyright notice and this permission notice appear in supporting
* documentation, and that the name of the copyright holders not be used in
* advertising or publicity pertaining to distribution of the software
* without specific, written prior permission. The copyright holders make
* no representations about the suitability of this software for any
* purpose. It is provided "as is" without express or implied warranty.
*
* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <cstdlib>
#include "android-framebuffer.h"
#ifdef ANDROID
#include <ui/FramebufferNativeWindow.h>
class AndroidFramebuffer {
public:
int init();
struct android_framebuffer fb_;
private:
android::sp<android::FramebufferNativeWindow> nativefb_;
};
int AndroidFramebuffer::init()
{
struct ANativeWindow *window;
const framebuffer_device_t *fbdev;
int ret1, ret2, ret3;
nativefb_ = new android::FramebufferNativeWindow();
fbdev = nativefb_->getDevice();
if (!fbdev)
return -1;
fb_.priv = this;
window = nativefb_.get();
ret1 = window->query(window, NATIVE_WINDOW_WIDTH, &fb_.width);
ret2 = window->query(window, NATIVE_WINDOW_HEIGHT, &fb_.height);
ret3 = window->query(window, NATIVE_WINDOW_FORMAT, &fb_.format);
fb_.xdpi = window->xdpi;
fb_.ydpi = window->ydpi;
fb_.refresh_rate = fbdev->fps;
if (ret1 != android::NO_ERROR ||
ret2 != android::NO_ERROR ||
ret3 != android::NO_ERROR)
return -1;
fb_.native_window = reinterpret_cast<EGLNativeWindowType>(window);
return 0;
}
void
android_framebuffer_destroy(struct android_framebuffer *fb)
{
AndroidFramebuffer *afb = static_cast<AndroidFramebuffer*>(fb->priv);
delete afb;
}
struct android_framebuffer *
android_framebuffer_create(void)
{
AndroidFramebuffer *afb = new AndroidFramebuffer;
if (afb->init() < 0) {
delete afb;
return NULL;
}
return &afb->fb_;
}
#endif /* ANDROID */