am 5e069074: am a15e4886: Merge "Framebuffer: Support variable number of framebuffers in the UI" (3f02b88a) · Commits · e / os / platform_frameworks_native

include/ui/FramebufferNativeWindow.h

+2 −1

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@

		#include <ui/egl/android_natives.h>

		#define NUM_FRAME_BUFFERS 2

		extern "C" EGLNativeWindowType android_createDisplaySurface(void);

		@@ -72,7 +73,7 @@ private:
		framebuffer_device_t* fbDev;
		alloc_device_t* grDev;

		sp<NativeBuffer> buffers[2];
		sp<NativeBuffer> buffers[NUM_FRAME_BUFFERS];
		sp<NativeBuffer> front;

		mutable Mutex mutex;

libs/ui/FramebufferNativeWindow.cpp

+26 −19

Original line number	Diff line number	Diff line
		@@ -83,6 +83,7 @@ FramebufferNativeWindow::FramebufferNativeWindow()
		if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
		int stride;
		int err;
		int i;
		err = framebuffer_open(module, &fbDev);
		LOGE_IF(err, "couldn't open framebuffer HAL (%s)", strerror(-err));

		@@ -96,27 +97,33 @@ FramebufferNativeWindow::FramebufferNativeWindow()
		mUpdateOnDemand = (fbDev->setUpdateRect != 0);

		// initialize the buffer FIFO
		mNumBuffers = 2;
		mNumFreeBuffers = 2;
		mNumBuffers = NUM_FRAME_BUFFERS;
		mNumFreeBuffers = NUM_FRAME_BUFFERS;
		mBufferHead = mNumBuffers-1;
		buffers[0] = new NativeBuffer(
		fbDev->width, fbDev->height, fbDev->format, GRALLOC_USAGE_HW_FB);
		buffers[1] = new NativeBuffer(

		for (i = 0; i < mNumBuffers; i++)
		{
		buffers[i] = new NativeBuffer(
		fbDev->width, fbDev->height, fbDev->format, GRALLOC_USAGE_HW_FB);
		}

		for (i = 0; i < mNumBuffers; i++)
		{
		err = grDev->alloc(grDev,
		fbDev->width, fbDev->height, fbDev->format,
		GRALLOC_USAGE_HW_FB, &buffers[0]->handle, &buffers[0]->stride);
		GRALLOC_USAGE_HW_FB, &buffers[i]->handle, &buffers[i]->stride);

		LOGE_IF(err, "fb buffer 0 allocation failed w=%d, h=%d, err=%s",
		fbDev->width, fbDev->height, strerror(-err));
		LOGE_IF(err, "fb buffer %d allocation failed w=%d, h=%d, err=%s",
		i, fbDev->width, fbDev->height, strerror(-err));

		err = grDev->alloc(grDev,
		fbDev->width, fbDev->height, fbDev->format,
		GRALLOC_USAGE_HW_FB, &buffers[1]->handle, &buffers[1]->stride);

		LOGE_IF(err, "fb buffer 1 allocation failed w=%d, h=%d, err=%s",
		fbDev->width, fbDev->height, strerror(-err));
		if (err)
		{
		mNumBuffers = i;
		mNumFreeBuffers = i;
		mBufferHead = mNumBuffers-1;
		break;
		}
		}

		const_cast<uint32_t&>(ANativeWindow::flags) = fbDev->flags;
		const_cast<float&>(ANativeWindow::xdpi) = fbDev->xdpi;