libs/surfaceflinger/LayerOrientationAnim.cpp - platform/frameworks/base - Git at Google

 /*
  * Copyright (C) 2007 The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *      http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */

 #define LOG_TAG "SurfaceFlinger"

 #include <stdlib.h>
 #include <stdint.h>
 #include <sys/types.h>

 #include <utils/Errors.h>
 #include <utils/Log.h>

 #include <core/SkBitmap.h>

 #include <ui/EGLDisplaySurface.h>

 #include "LayerBase.h"
 #include "LayerOrientationAnim.h"
 #include "SurfaceFlinger.h"
 #include "DisplayHardware/DisplayHardware.h"
 #include "OrientationAnimation.h"

 namespace android {
 // ---------------------------------------------------------------------------

 const uint32_t LayerOrientationAnim::typeInfo = LayerBase::typeInfo | 0x80;
 const char* const LayerOrientationAnim::typeID = "LayerOrientationAnim";

 // ---------------------------------------------------------------------------

 LayerOrientationAnim::LayerOrientationAnim(
         SurfaceFlinger* flinger, DisplayID display,
         OrientationAnimation* anim,
         const LayerBitmap& bitmap,
         const LayerBitmap& bitmapIn)
     : LayerBase(flinger, display), mAnim(anim),
       mBitmap(bitmap), mBitmapIn(bitmapIn),
       mTextureName(-1), mTextureNameIn(-1)
 {
     mStartTime = systemTime();
     mFinishTime = 0;
     mOrientationCompleted = false;
     mFirstRedraw = false;
     mLastNormalizedTime = 0;
     mLastScale = 0;
     mNeedsBlending = false;
 }

 LayerOrientationAnim::~LayerOrientationAnim()
 {
     if (mTextureName != -1U) {
         LayerBase::deletedTextures.add(mTextureName);
     }
     if (mTextureNameIn != -1U) {
         LayerBase::deletedTextures.add(mTextureNameIn);
     }
 }

 bool LayerOrientationAnim::needsBlending() const
 {
     return mNeedsBlending;
 }

 Point LayerOrientationAnim::getPhysicalSize() const
 {
     const GraphicPlane& plane(graphicPlane(0));
     const DisplayHardware& hw(plane.displayHardware());
     return Point(hw.getWidth(), hw.getHeight());
 }

 void LayerOrientationAnim::validateVisibility(const Transform&)
 {
     const Layer::State& s(drawingState());
     const Transform tr(s.transform);
     const Point size(getPhysicalSize());
     uint32_t w = size.x;
     uint32_t h = size.y;
     mTransformedBounds = tr.makeBounds(w, h);
     mLeft = tr.tx();
     mTop  = tr.ty();
     transparentRegionScreen.clear();
     mTransformed = true;
     mCanUseCopyBit = false;
     copybit_device_t* copybit = mFlinger->getBlitEngine();
     if (copybit) {
         mCanUseCopyBit = true;
     }
 }

 void LayerOrientationAnim::onOrientationCompleted()
 {
     mFinishTime = systemTime();
     mOrientationCompleted = true;
     mFirstRedraw = true;
     mNeedsBlending = true;
     mFlinger->invalidateLayerVisibility(this);
 }

 void LayerOrientationAnim::onDraw(const Region& clip) const
 {
     // Animation...
     const float MIN_SCALE = 0.5f;
     const float DURATION = ms2ns(200);
     const float BOUNCES_PER_SECOND = 1.618f;
     const float BOUNCES_AMPLITUDE = 1.0f/32.0f;

     const nsecs_t now = systemTime();
     float scale, alpha;

     if (mOrientationCompleted) {
         if (mFirstRedraw) {
             mFirstRedraw = false;

             // make a copy of what's on screen
             copybit_image_t image;
             mBitmapIn.getBitmapSurface(&image);
             const DisplayHardware& hw(graphicPlane(0).displayHardware());
             hw.copyBackToImage(image);

             // and erase the screen for this round
             glDisable(GL_BLEND);
             glDisable(GL_DITHER);
             glDisable(GL_SCISSOR_TEST);
             glClearColor(0,0,0,0);
             glClear(GL_COLOR_BUFFER_BIT);

             // FIXME: code below is gross
             mNeedsBlending = false;
             LayerOrientationAnim* self(const_cast<LayerOrientationAnim*>(this));
             mFlinger->invalidateLayerVisibility(self);
         }

         // make sure pick-up where we left off
         const float duration = DURATION * mLastNormalizedTime;
         const float normalizedTime = (float(now - mFinishTime) / duration);
         if (normalizedTime <= 1.0f) {
             const float squaredTime = normalizedTime*normalizedTime;
             scale = (1.0f - mLastScale)*squaredTime + mLastScale;
             alpha = (1.0f - normalizedTime);
             alpha *= alpha;
             alpha *= alpha;
         } else {
             mAnim->onAnimationFinished();
             scale = 1.0f;
             alpha = 0.0f;
         }
     } else {
         const float normalizedTime = float(now - mStartTime) / DURATION;
         if (normalizedTime <= 1.0f) {
             mLastNormalizedTime = normalizedTime;
             const float squaredTime = normalizedTime*normalizedTime;
             scale = (MIN_SCALE-1.0f)*squaredTime + 1.0f;
             alpha = 1.0f;
         } else {
             mLastNormalizedTime = 1.0f;
             const float to_seconds = DURATION / seconds(1);
             const float phi = BOUNCES_PER_SECOND *
                     (((normalizedTime - 1.0f) * to_seconds)*M_PI*2);
             scale = MIN_SCALE + BOUNCES_AMPLITUDE * (1.0f - cosf(phi));
             alpha = 1.0f;
         }
         mLastScale = scale;
     }
     drawScaled(scale, alpha);
 }

 void LayerOrientationAnim::drawScaled(float f, float alpha) const
 {
     copybit_image_t dst;
     const GraphicPlane& plane(graphicPlane(0));
     const DisplayHardware& hw(plane.displayHardware());
     hw.getDisplaySurface(&dst);

     // clear screen
     // TODO: with update on demand, we may be able
     // to not erase the screen at all during the animation
     if (!mOrientationCompleted) {
         glDisable(GL_BLEND);
         glDisable(GL_DITHER);
         glDisable(GL_SCISSOR_TEST);
         glClearColor(0,0,0,0);
         glClear(GL_COLOR_BUFFER_BIT);
     }

     const int w = dst.w*f;
     const int h = dst.h*f;
     const int xc = uint32_t(dst.w-w)/2;
     const int yc = uint32_t(dst.h-h)/2;
     const copybit_rect_t drect = { xc, yc, xc+w, yc+h };

     copybit_image_t src;
     mBitmap.getBitmapSurface(&src);
     const copybit_rect_t srect = { 0, 0, src.w, src.h };

     int err = NO_ERROR;
     const int can_use_copybit = canUseCopybit();
     if (can_use_copybit)  {
         copybit_device_t* copybit = mFlinger->getBlitEngine();
         copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0);
         copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_ENABLE);

         if (alpha < 1.0f) {
             copybit_image_t srcIn;
             mBitmapIn.getBitmapSurface(&srcIn);
             region_iterator it(Region(Rect( drect.l, drect.t, drect.r, drect.b )));
             copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 0xFF);
             err = copybit->stretch(copybit, &dst, &srcIn, &drect, &srect, &it);
         }

         if (!err && alpha > 0.0f) {
             region_iterator it(Region(Rect( drect.l, drect.t, drect.r, drect.b )));
             copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, int(alpha*255));
             err = copybit->stretch(copybit, &dst, &src, &drect, &srect, &it);
         }
         LOGE_IF(err != NO_ERROR, "copybit failed (%s)", strerror(err));
     }
     if (!can_use_copybit || err) {
         GGLSurface t;
         t.version = sizeof(GGLSurface);
         t.width  = src.w;
         t.height = src.h;
         t.stride = src.w;
         t.vstride= src.h;
         t.format = src.format;
         t.data = (GGLubyte*)(intptr_t(src.base) + src.offset);

         Transform tr;
         tr.set(f,0,0,f);
         tr.set(xc, yc);

         // FIXME: we should not access mVertices and mDrawingState like that,
         // but since we control the animation, we know it's going to work okay.
         // eventually we'd need a more formal way of doing things like this.
         LayerOrientationAnim& self(const_cast<LayerOrientationAnim&>(*this));
         tr.transform(self.mVertices[0], 0, 0);
         tr.transform(self.mVertices[1], 0, src.h);
         tr.transform(self.mVertices[2], src.w, src.h);
         tr.transform(self.mVertices[3], src.w, 0);
         if (!(mFlags & DisplayHardware::SLOW_CONFIG)) {
             // Too slow to do this in software
             self.mDrawingState.flags |= ISurfaceComposer::eLayerFilter;
         }

         if (alpha < 1.0f) {
             copybit_image_t src;
             mBitmapIn.getBitmapSurface(&src);
             t.data = (GGLubyte*)(intptr_t(src.base) + src.offset);
             if (UNLIKELY(mTextureNameIn == -1LU)) {
                 mTextureNameIn = createTexture();
                 GLuint w=0, h=0;
                 const Region dirty(Rect(t.width, t.height));
                 loadTexture(dirty, mTextureNameIn, t, w, h);
             }
             self.mDrawingState.alpha = 255;
             const Region clip(Rect( drect.l, drect.t, drect.r, drect.b ));
             drawWithOpenGL(clip, mTextureName, t);
         }

         t.data = (GGLubyte*)(intptr_t(src.base) + src.offset);
         if (UNLIKELY(mTextureName == -1LU)) {
             mTextureName = createTexture();
             GLuint w=0, h=0;
             const Region dirty(Rect(t.width, t.height));
             loadTexture(dirty, mTextureName, t, w, h);
         }
         self.mDrawingState.alpha = int(alpha*255);
         const Region clip(Rect( drect.l, drect.t, drect.r, drect.b ));
         drawWithOpenGL(clip, mTextureName, t);
     }
 }

 // ---------------------------------------------------------------------------

 }; // namespace android
	/*
	* Copyright (C) 2007 The Android Open Source Project
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	#define LOG_TAG "SurfaceFlinger"

	#include <stdlib.h>
	#include <stdint.h>
	#include <sys/types.h>

	#include <utils/Errors.h>
	#include <utils/Log.h>

	#include <core/SkBitmap.h>

	#include <ui/EGLDisplaySurface.h>

	#include "LayerBase.h"
	#include "LayerOrientationAnim.h"
	#include "SurfaceFlinger.h"
	#include "DisplayHardware/DisplayHardware.h"
	#include "OrientationAnimation.h"

	namespace android {
	// ---------------------------------------------------------------------------

	const uint32_t LayerOrientationAnim::typeInfo = LayerBase::typeInfo \| 0x80;
	const char* const LayerOrientationAnim::typeID = "LayerOrientationAnim";

	// ---------------------------------------------------------------------------

	LayerOrientationAnim::LayerOrientationAnim(
	SurfaceFlinger* flinger, DisplayID display,
	OrientationAnimation* anim,
	const LayerBitmap& bitmap,
	const LayerBitmap& bitmapIn)
	: LayerBase(flinger, display), mAnim(anim),
	mBitmap(bitmap), mBitmapIn(bitmapIn),
	mTextureName(-1), mTextureNameIn(-1)
	{
	mStartTime = systemTime();
	mFinishTime = 0;
	mOrientationCompleted = false;
	mFirstRedraw = false;
	mLastNormalizedTime = 0;
	mLastScale = 0;
	mNeedsBlending = false;
	}

	LayerOrientationAnim::~LayerOrientationAnim()
	{
	if (mTextureName != -1U) {
	LayerBase::deletedTextures.add(mTextureName);
	}
	if (mTextureNameIn != -1U) {
	LayerBase::deletedTextures.add(mTextureNameIn);
	}
	}

	bool LayerOrientationAnim::needsBlending() const
	{
	return mNeedsBlending;
	}

	Point LayerOrientationAnim::getPhysicalSize() const
	{
	const GraphicPlane& plane(graphicPlane(0));
	const DisplayHardware& hw(plane.displayHardware());
	return Point(hw.getWidth(), hw.getHeight());
	}

	void LayerOrientationAnim::validateVisibility(const Transform&)
	{
	const Layer::State& s(drawingState());
	const Transform tr(s.transform);
	const Point size(getPhysicalSize());
	uint32_t w = size.x;
	uint32_t h = size.y;
	mTransformedBounds = tr.makeBounds(w, h);
	mLeft = tr.tx();
	mTop = tr.ty();
	transparentRegionScreen.clear();
	mTransformed = true;
	mCanUseCopyBit = false;
	copybit_device_t* copybit = mFlinger->getBlitEngine();
	if (copybit) {
	mCanUseCopyBit = true;
	}
	}

	void LayerOrientationAnim::onOrientationCompleted()
	{
	mFinishTime = systemTime();
	mOrientationCompleted = true;
	mFirstRedraw = true;
	mNeedsBlending = true;
	mFlinger->invalidateLayerVisibility(this);
	}

	void LayerOrientationAnim::onDraw(const Region& clip) const
	{
	// Animation...
	const float MIN_SCALE = 0.5f;
	const float DURATION = ms2ns(200);
	const float BOUNCES_PER_SECOND = 1.618f;
	const float BOUNCES_AMPLITUDE = 1.0f/32.0f;

	const nsecs_t now = systemTime();
	float scale, alpha;

	if (mOrientationCompleted) {
	if (mFirstRedraw) {
	mFirstRedraw = false;

	// make a copy of what's on screen
	copybit_image_t image;
	mBitmapIn.getBitmapSurface(&image);
	const DisplayHardware& hw(graphicPlane(0).displayHardware());
	hw.copyBackToImage(image);

	// and erase the screen for this round
	glDisable(GL_BLEND);
	glDisable(GL_DITHER);
	glDisable(GL_SCISSOR_TEST);
	glClearColor(0,0,0,0);
	glClear(GL_COLOR_BUFFER_BIT);

	// FIXME: code below is gross
	mNeedsBlending = false;
	LayerOrientationAnim* self(const_cast<LayerOrientationAnim*>(this));
	mFlinger->invalidateLayerVisibility(self);
	}

	// make sure pick-up where we left off
	const float duration = DURATION * mLastNormalizedTime;
	const float normalizedTime = (float(now - mFinishTime) / duration);
	if (normalizedTime <= 1.0f) {
	const float squaredTime = normalizedTime*normalizedTime;
	scale = (1.0f - mLastScale)*squaredTime + mLastScale;
	alpha = (1.0f - normalizedTime);
	alpha *= alpha;
	alpha *= alpha;
	} else {
	mAnim->onAnimationFinished();
	scale = 1.0f;
	alpha = 0.0f;
	}
	} else {
	const float normalizedTime = float(now - mStartTime) / DURATION;
	if (normalizedTime <= 1.0f) {
	mLastNormalizedTime = normalizedTime;
	const float squaredTime = normalizedTime*normalizedTime;
	scale = (MIN_SCALE-1.0f)*squaredTime + 1.0f;
	alpha = 1.0f;
	} else {
	mLastNormalizedTime = 1.0f;
	const float to_seconds = DURATION / seconds(1);
	const float phi = BOUNCES_PER_SECOND *
	(((normalizedTime - 1.0f) * to_seconds)M_PI2);
	scale = MIN_SCALE + BOUNCES_AMPLITUDE * (1.0f - cosf(phi));
	alpha = 1.0f;
	}
	mLastScale = scale;
	}
	drawScaled(scale, alpha);
	}

	void LayerOrientationAnim::drawScaled(float f, float alpha) const
	{
	copybit_image_t dst;
	const GraphicPlane& plane(graphicPlane(0));
	const DisplayHardware& hw(plane.displayHardware());
	hw.getDisplaySurface(&dst);

	// clear screen
	// TODO: with update on demand, we may be able
	// to not erase the screen at all during the animation
	if (!mOrientationCompleted) {
	glDisable(GL_BLEND);
	glDisable(GL_DITHER);
	glDisable(GL_SCISSOR_TEST);
	glClearColor(0,0,0,0);
	glClear(GL_COLOR_BUFFER_BIT);
	}

	const int w = dst.w*f;
	const int h = dst.h*f;
	const int xc = uint32_t(dst.w-w)/2;
	const int yc = uint32_t(dst.h-h)/2;
	const copybit_rect_t drect = { xc, yc, xc+w, yc+h };

	copybit_image_t src;
	mBitmap.getBitmapSurface(&src);
	const copybit_rect_t srect = { 0, 0, src.w, src.h };

	int err = NO_ERROR;
	const int can_use_copybit = canUseCopybit();
	if (can_use_copybit) {
	copybit_device_t* copybit = mFlinger->getBlitEngine();
	copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0);
	copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_ENABLE);

	if (alpha < 1.0f) {
	copybit_image_t srcIn;
	mBitmapIn.getBitmapSurface(&srcIn);
	region_iterator it(Region(Rect( drect.l, drect.t, drect.r, drect.b )));
	copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 0xFF);
	err = copybit->stretch(copybit, &dst, &srcIn, &drect, &srect, &it);
	}

	if (!err && alpha > 0.0f) {
	region_iterator it(Region(Rect( drect.l, drect.t, drect.r, drect.b )));
	copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, int(alpha*255));
	err = copybit->stretch(copybit, &dst, &src, &drect, &srect, &it);
	}
	LOGE_IF(err != NO_ERROR, "copybit failed (%s)", strerror(err));
	}
	if (!can_use_copybit \|\| err) {
	GGLSurface t;
	t.version = sizeof(GGLSurface);
	t.width = src.w;
	t.height = src.h;
	t.stride = src.w;
	t.vstride= src.h;
	t.format = src.format;
	t.data = (GGLubyte*)(intptr_t(src.base) + src.offset);

	Transform tr;
	tr.set(f,0,0,f);
	tr.set(xc, yc);

	// FIXME: we should not access mVertices and mDrawingState like that,
	// but since we control the animation, we know it's going to work okay.
	// eventually we'd need a more formal way of doing things like this.
	LayerOrientationAnim& self(const_cast<LayerOrientationAnim&>(*this));
	tr.transform(self.mVertices[0], 0, 0);
	tr.transform(self.mVertices[1], 0, src.h);
	tr.transform(self.mVertices[2], src.w, src.h);
	tr.transform(self.mVertices[3], src.w, 0);
	if (!(mFlags & DisplayHardware::SLOW_CONFIG)) {
	// Too slow to do this in software
	self.mDrawingState.flags \|= ISurfaceComposer::eLayerFilter;
	}

	if (alpha < 1.0f) {
	copybit_image_t src;
	mBitmapIn.getBitmapSurface(&src);
	t.data = (GGLubyte*)(intptr_t(src.base) + src.offset);
	if (UNLIKELY(mTextureNameIn == -1LU)) {
	mTextureNameIn = createTexture();
	GLuint w=0, h=0;
	const Region dirty(Rect(t.width, t.height));
	loadTexture(dirty, mTextureNameIn, t, w, h);
	}
	self.mDrawingState.alpha = 255;
	const Region clip(Rect( drect.l, drect.t, drect.r, drect.b ));
	drawWithOpenGL(clip, mTextureName, t);
	}

	t.data = (GGLubyte*)(intptr_t(src.base) + src.offset);
	if (UNLIKELY(mTextureName == -1LU)) {
	mTextureName = createTexture();
	GLuint w=0, h=0;
	const Region dirty(Rect(t.width, t.height));
	loadTexture(dirty, mTextureName, t, w, h);
	}
	self.mDrawingState.alpha = int(alpha*255);
	const Region clip(Rect( drect.l, drect.t, drect.r, drect.b ));
	drawWithOpenGL(clip, mTextureName, t);
	}
	}

	// ---------------------------------------------------------------------------

	}; // namespace android