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/*
* 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.
*/
#include <stdlib.h>
#include <stdint.h>
#include <math.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/Log.h>
#include <utils/StopWatch.h>
#include <ui/GraphicBuffer.h>
#include <ui/PixelFormat.h>
#include <ui/FramebufferNativeWindow.h>
#include <ui/Rect.h>
#include <ui/Region.h>
#include <hardware/copybit.h>
#include "LayerBuffer.h"
#include "SurfaceFlinger.h"
#include "DisplayHardware/DisplayHardware.h"
namespace android {
// ---------------------------------------------------------------------------
gralloc_module_t const* LayerBuffer::sGrallocModule = 0;
// ---------------------------------------------------------------------------
LayerBuffer::LayerBuffer(SurfaceFlinger* flinger, DisplayID display,
const sp<Client>& client)
: LayerBaseClient(flinger, display, client),
mNeedsBlending(false), mBlitEngine(0)
{
}
LayerBuffer::~LayerBuffer()
{
if (mBlitEngine) {
copybit_close(mBlitEngine);
}
}
void LayerBuffer::onFirstRef()
{
LayerBaseClient::onFirstRef();
mSurface = new SurfaceLayerBuffer(mFlinger, this);
hw_module_t const* module = (hw_module_t const*)sGrallocModule;
if (!module) {
// NOTE: technically there is a race here, but it shouldn't
// cause any problem since hw_get_module() always returns
// the same value.
if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
sGrallocModule = (gralloc_module_t const *)module;
}
}
if (hw_get_module(COPYBIT_HARDWARE_MODULE_ID, &module) == 0) {
copybit_open(module, &mBlitEngine);
}
}
sp<LayerBaseClient::Surface> LayerBuffer::createSurface() const
{
return mSurface;
}
status_t LayerBuffer::ditch()
{
mSurface.clear();
return NO_ERROR;
}
bool LayerBuffer::needsBlending() const {
return mNeedsBlending;
}
void LayerBuffer::setNeedsBlending(bool blending) {
mNeedsBlending = blending;
}
void LayerBuffer::postBuffer(ssize_t offset)
{
sp<Source> source(getSource());
if (source != 0)
source->postBuffer(offset);
}
void LayerBuffer::unregisterBuffers()
{
sp<Source> source(clearSource());
if (source != 0)
source->unregisterBuffers();
}
uint32_t LayerBuffer::doTransaction(uint32_t flags)
{
sp<Source> source(getSource());
if (source != 0)
source->onTransaction(flags);
uint32_t res = LayerBase::doTransaction(flags);
// we always want filtering for these surfaces
mNeedsFiltering = !(mFlags & DisplayHardware::SLOW_CONFIG);
return res;
}
void LayerBuffer::unlockPageFlip(const Transform& planeTransform,
Region& outDirtyRegion)
{
// this code-path must be as tight as possible, it's called each time
// the screen is composited.
sp<Source> source(getSource());
if (source != 0)
source->onVisibilityResolved(planeTransform);
LayerBase::unlockPageFlip(planeTransform, outDirtyRegion);
}
void LayerBuffer::onDraw(const Region& clip) const
{
sp<Source> source(getSource());
if (LIKELY(source != 0)) {
source->onDraw(clip);
} else {
clearWithOpenGL(clip);
}
}
void LayerBuffer::serverDestroy()
{
sp<Source> source(clearSource());
if (source != 0) {
source->destroy();
}
}
/**
* This creates a "buffer" source for this surface
*/
status_t LayerBuffer::registerBuffers(const ISurface::BufferHeap& buffers)
{
Mutex::Autolock _l(mLock);
if (mSource != 0)
return INVALID_OPERATION;
sp<BufferSource> source = new BufferSource(*this, buffers);
status_t result = source->getStatus();
if (result == NO_ERROR) {
mSource = source;
}
return result;
}
/**
* This creates an "overlay" source for this surface
*/
sp<OverlayRef> LayerBuffer::createOverlay(uint32_t w, uint32_t h, int32_t f,
int32_t orientation)
{
sp<OverlayRef> result;
Mutex::Autolock _l(mLock);
if (mSource != 0)
return result;
sp<OverlaySource> source = new OverlaySource(*this, &result, w, h, f, orientation);
if (result != 0) {
mSource = source;
}
return result;
}
sp<LayerBuffer::Source> LayerBuffer::getSource() const {
Mutex::Autolock _l(mLock);
return mSource;
}
sp<LayerBuffer::Source> LayerBuffer::clearSource() {
sp<Source> source;
Mutex::Autolock _l(mLock);
source = mSource;
mSource.clear();
return source;
}
// ============================================================================
// LayerBuffer::SurfaceLayerBuffer
// ============================================================================
LayerBuffer::SurfaceLayerBuffer::SurfaceLayerBuffer(
const sp<SurfaceFlinger>& flinger, const sp<LayerBuffer>& owner)
: LayerBaseClient::Surface(flinger, owner->getIdentity(), owner)
{
}
LayerBuffer::SurfaceLayerBuffer::~SurfaceLayerBuffer()
{
unregisterBuffers();
}
status_t LayerBuffer::SurfaceLayerBuffer::registerBuffers(
const ISurface::BufferHeap& buffers)
{
sp<LayerBuffer> owner(getOwner());
if (owner != 0)
return owner->registerBuffers(buffers);
return NO_INIT;
}
void LayerBuffer::SurfaceLayerBuffer::postBuffer(ssize_t offset)
{
sp<LayerBuffer> owner(getOwner());
if (owner != 0)
owner->postBuffer(offset);
}
void LayerBuffer::SurfaceLayerBuffer::unregisterBuffers()
{
sp<LayerBuffer> owner(getOwner());
if (owner != 0)
owner->unregisterBuffers();
}
sp<OverlayRef> LayerBuffer::SurfaceLayerBuffer::createOverlay(
uint32_t w, uint32_t h, int32_t format, int32_t orientation) {
sp<OverlayRef> result;
sp<LayerBuffer> owner(getOwner());
if (owner != 0)
result = owner->createOverlay(w, h, format, orientation);
return result;
}
// ============================================================================
// LayerBuffer::Buffer
// ============================================================================
LayerBuffer::Buffer::Buffer(const ISurface::BufferHeap& buffers,
ssize_t offset, size_t bufferSize)
: mBufferHeap(buffers), mSupportsCopybit(false)
{
NativeBuffer& src(mNativeBuffer);
src.crop.l = 0;
src.crop.t = 0;
src.crop.r = buffers.w;
src.crop.b = buffers.h;
src.img.w = buffers.hor_stride ?: buffers.w;
src.img.h = buffers.ver_stride ?: buffers.h;
src.img.format = buffers.format;
src.img.base = (void*)(intptr_t(buffers.heap->base()) + offset);
src.img.handle = 0;
gralloc_module_t const * module = LayerBuffer::getGrallocModule();
if (module && module->perform) {
int err = module->perform(module,
GRALLOC_MODULE_PERFORM_CREATE_HANDLE_FROM_BUFFER,
buffers.heap->heapID(), bufferSize,
offset, buffers.heap->base(),
&src.img.handle);
// we can fail here is the passed buffer is purely software
mSupportsCopybit = (err == NO_ERROR);
}
}
LayerBuffer::Buffer::~Buffer()
{
NativeBuffer& src(mNativeBuffer);
if (src.img.handle) {
native_handle_delete(src.img.handle);
}
}
// ============================================================================
// LayerBuffer::Source
// LayerBuffer::BufferSource
// LayerBuffer::OverlaySource
// ============================================================================
LayerBuffer::Source::Source(LayerBuffer& layer)
: mLayer(layer)
{
}
LayerBuffer::Source::~Source() {
}
void LayerBuffer::Source::onDraw(const Region& clip) const {
}
void LayerBuffer::Source::onTransaction(uint32_t flags) {
}
void LayerBuffer::Source::onVisibilityResolved(
const Transform& planeTransform) {
}
void LayerBuffer::Source::postBuffer(ssize_t offset) {
}
void LayerBuffer::Source::unregisterBuffers() {
}
// ---------------------------------------------------------------------------
LayerBuffer::BufferSource::BufferSource(LayerBuffer& layer,
const ISurface::BufferHeap& buffers)
: Source(layer), mStatus(NO_ERROR), mBufferSize(0)
{
if (buffers.heap == NULL) {
// this is allowed, but in this case, it is illegal to receive
// postBuffer(). The surface just erases the framebuffer with
// fully transparent pixels.
mBufferHeap = buffers;
mLayer.setNeedsBlending(false);
return;
}
status_t err = (buffers.heap->heapID() >= 0) ? NO_ERROR : NO_INIT;
if (err != NO_ERROR) {
LOGE("LayerBuffer::BufferSource: invalid heap (%s)", strerror(err));
mStatus = err;
return;
}
PixelFormatInfo info;
err = getPixelFormatInfo(buffers.format, &info);
if (err != NO_ERROR) {
LOGE("LayerBuffer::BufferSource: invalid format %d (%s)",
buffers.format, strerror(err));
mStatus = err;
return;
}
if (buffers.hor_stride<0 || buffers.ver_stride<0) {
LOGE("LayerBuffer::BufferSource: invalid parameters "
"(w=%d, h=%d, xs=%d, ys=%d)",
buffers.w, buffers.h, buffers.hor_stride, buffers.ver_stride);
mStatus = BAD_VALUE;
return;
}
mBufferHeap = buffers;
mLayer.setNeedsBlending((info.h_alpha - info.l_alpha) > 0);
mBufferSize = info.getScanlineSize(buffers.hor_stride)*buffers.ver_stride;
mLayer.forceVisibilityTransaction();
}
LayerBuffer::BufferSource::~BufferSource()
{
class MessageDestroyTexture : public MessageBase {
SurfaceFlinger* flinger;
GLuint name;
public:
MessageDestroyTexture(
SurfaceFlinger* flinger, GLuint name)
: flinger(flinger), name(name) { }
virtual bool handler() {
glDeleteTextures(1, &name);
return true;
}
};
if (mTexture.name != -1U) {
// GL textures can only be destroyed from the GL thread
getFlinger()->mEventQueue.postMessage(
new MessageDestroyTexture(getFlinger(), mTexture.name) );
}
if (mTexture.image != EGL_NO_IMAGE_KHR) {
EGLDisplay dpy(getFlinger()->graphicPlane(0).getEGLDisplay());
eglDestroyImageKHR(dpy, mTexture.image);
}
}
void LayerBuffer::BufferSource::postBuffer(ssize_t offset)
{
ISurface::BufferHeap buffers;
{ // scope for the lock
Mutex::Autolock _l(mBufferSourceLock);
buffers = mBufferHeap;
if (buffers.heap != 0) {
const size_t memorySize = buffers.heap->getSize();
if ((size_t(offset) + mBufferSize) > memorySize) {
LOGE("LayerBuffer::BufferSource::postBuffer() "
"invalid buffer (offset=%d, size=%d, heap-size=%d",
int(offset), int(mBufferSize), int(memorySize));
return;
}
}
}
sp<Buffer> buffer;
if (buffers.heap != 0) {
buffer = new LayerBuffer::Buffer(buffers, offset, mBufferSize);
if (buffer->getStatus() != NO_ERROR)
buffer.clear();
setBuffer(buffer);
mLayer.invalidate();
}
}
void LayerBuffer::BufferSource::unregisterBuffers()
{
Mutex::Autolock _l(mBufferSourceLock);
mBufferHeap.heap.clear();
mBuffer.clear();
mLayer.invalidate();
}
sp<LayerBuffer::Buffer> LayerBuffer::BufferSource::getBuffer() const
{
Mutex::Autolock _l(mBufferSourceLock);
return mBuffer;
}
void LayerBuffer::BufferSource::setBuffer(const sp<LayerBuffer::Buffer>& buffer)
{
Mutex::Autolock _l(mBufferSourceLock);
mBuffer = buffer;
}
void LayerBuffer::BufferSource::onDraw(const Region& clip) const
{
sp<Buffer> ourBuffer(getBuffer());
if (UNLIKELY(ourBuffer == 0)) {
// nothing to do, we don't have a buffer
mLayer.clearWithOpenGL(clip);
return;
}
status_t err = NO_ERROR;
NativeBuffer src(ourBuffer->getBuffer());
const Rect transformedBounds(mLayer.getTransformedBounds());
#if defined(EGL_ANDROID_image_native_buffer)
if (GLExtensions::getInstance().haveDirectTexture()) {
err = INVALID_OPERATION;
if (ourBuffer->supportsCopybit()) {
copybit_device_t* copybit = mLayer.mBlitEngine;
if (copybit && err != NO_ERROR) {
// create our EGLImageKHR the first time
err = initTempBuffer();
if (err == NO_ERROR) {
// NOTE: Assume the buffer is allocated with the proper USAGE flags
const NativeBuffer& dst(mTempBuffer);
region_iterator clip(Region(Rect(dst.crop.r, dst.crop.b)));
copybit->set_parameter(copybit, COPYBIT_TRANSFORM, 0);
copybit->set_parameter(copybit, COPYBIT_PLANE_ALPHA, 0xFF);
copybit->set_parameter(copybit, COPYBIT_DITHER, COPYBIT_ENABLE);
err = copybit->stretch(copybit, &dst.img, &src.img,
&dst.crop, &src.crop, &clip);
if (err != NO_ERROR) {
clearTempBufferImage();
}
}
}
}
}
#endif
else {
err = INVALID_OPERATION;
}
if (err != NO_ERROR) {
// slower fallback
GGLSurface t;
t.version = sizeof(GGLSurface);
t.width = src.crop.r;
t.height = src.crop.b;
t.stride = src.img.w;
t.vstride= src.img.h;
t.format = src.img.format;
t.data = (GGLubyte*)src.img.base;
const Region dirty(Rect(t.width, t.height));
mTextureManager.loadTexture(&mTexture, dirty, t);
}
mLayer.setBufferTransform(mBufferHeap.transform);
mLayer.drawWithOpenGL(clip, mTexture);
}
status_t LayerBuffer::BufferSource::initTempBuffer() const
{
// figure out the size we need now
const ISurface::BufferHeap& buffers(mBufferHeap);
uint32_t w = mLayer.mTransformedBounds.width();
uint32_t h = mLayer.mTransformedBounds.height();
if (mLayer.getOrientation() & (Transform::ROT_90 | Transform::ROT_270)) {
int t = w; w = h; h = t;
}
// we're in the copybit case, so make sure we can handle this blit
// we don't have to keep the aspect ratio here
copybit_device_t* copybit = mLayer.mBlitEngine;
const int down = copybit->get(copybit, COPYBIT_MINIFICATION_LIMIT);
const int up = copybit->get(copybit, COPYBIT_MAGNIFICATION_LIMIT);
if (buffers.w > w*down) w = buffers.w / down;
else if (w > buffers.w*up) w = buffers.w*up;
if (buffers.h > h*down) h = buffers.h / down;
else if (h > buffers.h*up) h = buffers.h*up;
if (mTexture.image != EGL_NO_IMAGE_KHR) {
// we have an EGLImage, make sure the needed size didn't change
if (w!=mTexture.width || h!= mTexture.height) {
// delete the EGLImage and texture
clearTempBufferImage();
} else {
// we're good, we have an EGLImageKHR and it's (still) the
// right size
return NO_ERROR;
}
}
// figure out if we need linear filtering
if (buffers.w * h == buffers.h * w) {
// same pixel area, don't use filtering
mLayer.mNeedsFiltering = false;
}
// Allocate a temporary buffer and create the corresponding EGLImageKHR
// once the EGLImage has been created we don't need the
// graphic buffer reference anymore.
sp<GraphicBuffer> buffer = new GraphicBuffer(
w, h, HAL_PIXEL_FORMAT_RGB_565,
GraphicBuffer::USAGE_HW_TEXTURE |
GraphicBuffer::USAGE_HW_2D);
status_t err = buffer->initCheck();
if (err == NO_ERROR) {
NativeBuffer& dst(mTempBuffer);
dst.img.w = buffer->getStride();
dst.img.h = h;
dst.img.format = buffer->getPixelFormat();
dst.img.handle = (native_handle_t *)buffer->handle;
dst.img.base = 0;
dst.crop.l = 0;
dst.crop.t = 0;
dst.crop.r = w;
dst.crop.b = h;
EGLDisplay dpy(getFlinger()->graphicPlane(0).getEGLDisplay());
err = mTextureManager.initEglImage(&mTexture, dpy, buffer);
}
return err;
}
void LayerBuffer::BufferSource::clearTempBufferImage() const
{
// delete the image
EGLDisplay dpy(getFlinger()->graphicPlane(0).getEGLDisplay());
eglDestroyImageKHR(dpy, mTexture.image);
// and the associated texture (recreate a name)
glDeleteTextures(1, &mTexture.name);
Texture defaultTexture;
mTexture = defaultTexture;
}
// ---------------------------------------------------------------------------
LayerBuffer::OverlaySource::OverlaySource(LayerBuffer& layer,
sp<OverlayRef>* overlayRef,
uint32_t w, uint32_t h, int32_t format, int32_t orientation)
: Source(layer), mVisibilityChanged(false),
mOverlay(0), mOverlayHandle(0), mOverlayDevice(0), mOrientation(orientation)
{
overlay_control_device_t* overlay_dev = getFlinger()->getOverlayEngine();
if (overlay_dev == NULL) {
// overlays not supported
return;
}
mOverlayDevice = overlay_dev;
overlay_t* overlay = overlay_dev->createOverlay(overlay_dev, w, h, format);
if (overlay == NULL) {
// couldn't create the overlay (no memory? no more overlays?)
return;
}
// enable dithering...
overlay_dev->setParameter(overlay_dev, overlay,
OVERLAY_DITHER, OVERLAY_ENABLE);
mOverlay = overlay;
mWidth = overlay->w;
mHeight = overlay->h;
mFormat = overlay->format;
mWidthStride = overlay->w_stride;
mHeightStride = overlay->h_stride;
mInitialized = false;
mOverlayHandle = overlay->getHandleRef(overlay);
sp<OverlayChannel> channel = new OverlayChannel( &layer );
*overlayRef = new OverlayRef(mOverlayHandle, channel,
mWidth, mHeight, mFormat, mWidthStride, mHeightStride);
getFlinger()->signalEvent();
}
LayerBuffer::OverlaySource::~OverlaySource()
{
if (mOverlay && mOverlayDevice) {
overlay_control_device_t* overlay_dev = mOverlayDevice;
overlay_dev->destroyOverlay(overlay_dev, mOverlay);
}
}
void LayerBuffer::OverlaySource::onDraw(const Region& clip) const
{
// this would be where the color-key would be set, should we need it.
GLclampf red = 0;
GLclampf green = 0;
GLclampf blue = 0;
mLayer.clearWithOpenGL(clip, red, green, blue, 0);
}
void LayerBuffer::OverlaySource::onTransaction(uint32_t flags)
{
const Layer::State& front(mLayer.drawingState());
const Layer::State& temp(mLayer.currentState());
if (temp.sequence != front.sequence) {
mVisibilityChanged = true;
}
}
void LayerBuffer::OverlaySource::onVisibilityResolved(
const Transform& planeTransform)
{
// this code-path must be as tight as possible, it's called each time
// the screen is composited.
if (UNLIKELY(mOverlay != 0)) {
if (mVisibilityChanged || !mInitialized) {
mVisibilityChanged = false;
mInitialized = true;
const Rect bounds(mLayer.getTransformedBounds());
int x = bounds.left;
int y = bounds.top;
int w = bounds.width();
int h = bounds.height();
// we need a lock here to protect "destroy"
Mutex::Autolock _l(mOverlaySourceLock);
if (mOverlay) {
overlay_control_device_t* overlay_dev = mOverlayDevice;
overlay_dev->setPosition(overlay_dev, mOverlay, x,y,w,h);
// we need to combine the layer orientation and the
// user-requested orientation.
Transform finalTransform = Transform(mOrientation) *
Transform(mLayer.getOrientation());
overlay_dev->setParameter(overlay_dev, mOverlay,
OVERLAY_TRANSFORM, finalTransform.getOrientation());
overlay_dev->commit(overlay_dev, mOverlay);
}
}
}
}
void LayerBuffer::OverlaySource::destroy()
{
// we need a lock here to protect "onVisibilityResolved"
Mutex::Autolock _l(mOverlaySourceLock);
if (mOverlay && mOverlayDevice) {
overlay_control_device_t* overlay_dev = mOverlayDevice;
overlay_dev->destroyOverlay(overlay_dev, mOverlay);
mOverlay = 0;
}
}
// ---------------------------------------------------------------------------
}; // namespace android