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/*
* Copyright 2012, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define LOG_TAG "CanvasTexture"
#define LOG_NDEBUG 1
#include "config.h"
#include "CanvasTexture.h"
#if USE(ACCELERATED_COMPOSITING)
#include "AndroidLog.h"
#include "GLUtils.h"
#include "Image.h"
#include "ImageBuffer.h"
#include "SkBitmap.h"
#include "SkBitmapRef.h"
#include "SkDevice.h"
#include "SkPixelRef.h"
#include <android/native_window.h>
#include <gui/SurfaceTexture.h>
#include <gui/SurfaceTextureClient.h>
namespace WebCore {
static int s_maxTextureSize = 0;
static HashMap<int, CanvasTexture*> s_textures;
static android::Mutex s_texturesLock;
/********************************************
* Called by both threads
********************************************/
PassRefPtr<CanvasTexture> CanvasTexture::getCanvasTexture(CanvasLayer* layer)
{
android::Mutex::Autolock lock(s_texturesLock);
RefPtr<CanvasTexture> texture = s_textures.get(layer->uniqueId());
if (texture.get())
return texture.release();
return adoptRef(new CanvasTexture(layer->uniqueId()));
}
bool CanvasTexture::setHwAccelerated(bool hwAccelerated)
{
android::Mutex::Autolock lock(m_surfaceLock);
if (m_useHwAcceleration == hwAccelerated)
return false;
m_useHwAcceleration = hwAccelerated;
if (!m_ANW.get())
return false;
destroySurfaceTextureLocked();
return true;
}
/********************************************
* Called by WebKit thread
********************************************/
void CanvasTexture::setSize(const IntSize& size)
{
android::Mutex::Autolock lock(m_surfaceLock);
if (m_size == size)
return;
m_size = size;
if (m_ANW.get()) {
if (useSurfaceTexture()) {
int result = native_window_set_buffers_dimensions(m_ANW.get(),
m_size.width(), m_size.height());
GLUtils::checkSurfaceTextureError("native_window_set_buffers_dimensions", result);
if (result != NO_ERROR)
m_useHwAcceleration = false; // On error, drop out of HWA
}
if (!useSurfaceTexture())
destroySurfaceTextureLocked();
}
}
SurfaceTextureClient* CanvasTexture::nativeWindow()
{
android::Mutex::Autolock lock(m_surfaceLock);
if (m_ANW.get())
return m_ANW.get();
if (!m_texture)
return 0;
if (!useSurfaceTexture())
return 0;
m_surfaceTexture = new android::SurfaceTexture(m_texture, false);
m_ANW = new android::SurfaceTextureClient(m_surfaceTexture);
int result = native_window_set_buffers_format(m_ANW.get(), HAL_PIXEL_FORMAT_RGBA_8888);
GLUtils::checkSurfaceTextureError("native_window_set_buffers_format", result);
if (result == NO_ERROR) {
result = native_window_set_buffers_dimensions(m_ANW.get(),
m_size.width(), m_size.height());
GLUtils::checkSurfaceTextureError("native_window_set_buffers_dimensions", result);
}
if (result != NO_ERROR) {
m_useHwAcceleration = false;
destroySurfaceTextureLocked();
return 0;
}
return m_ANW.get();
}
bool CanvasTexture::uploadImageBuffer(ImageBuffer* imageBuffer)
{
m_hasValidTexture = false;
SurfaceTextureClient* anw = nativeWindow();
if (!anw)
return false;
// Size mismatch, early abort (will fall back to software)
if (imageBuffer->size() != m_size)
return false;
SkCanvas* canvas = imageBufferCanvas(imageBuffer);
if (!canvas)
return false;
const SkBitmap& bitmap = canvas->getDevice()->accessBitmap(false);
if (!GLUtils::updateSharedSurfaceTextureWithBitmap(anw, bitmap))
return false;
m_hasValidTexture = true;
return true;
}
/********************************************
* Called by UI thread WITH GL context
********************************************/
CanvasTexture::~CanvasTexture()
{
if (m_layerId) {
s_texturesLock.lock();
s_textures.remove(m_layerId);
s_texturesLock.unlock();
}
if (m_texture)
GLUtils::deleteTexture(&m_texture);
}
void CanvasTexture::requireTexture()
{
android::Mutex::Autolock lock(m_surfaceLock);
if (!m_texture)
glGenTextures(1, &m_texture);
if (!s_maxTextureSize)
glGetIntegerv(GL_MAX_TEXTURE_SIZE, &s_maxTextureSize);
}
bool CanvasTexture::updateTexImage()
{
android::Mutex::Autolock lock(m_surfaceLock);
if (!m_surfaceTexture.get())
return false;
status_t result = m_surfaceTexture->updateTexImage();
if (result != OK) {
ALOGE("unexpected error: updateTexImage return %d", result);
return false;
}
return true;
}
/********************************************
* Called by both threads
********************************************/
void CanvasTexture::destroySurfaceTextureLocked()
{
if (m_ANW.get()) {
m_ANW.clear();
m_surfaceTexture->abandon();
m_surfaceTexture.clear();
}
}
/********************************************
* Called by WebKit thread
********************************************/
CanvasTexture::CanvasTexture(int layerId)
: m_size()
, m_layerId(layerId)
, m_texture(0)
, m_surfaceTexture(0)
, m_ANW(0)
, m_hasValidTexture(false)
, m_useHwAcceleration(true)
{
s_textures.add(m_layerId, this);
}
// TODO: Have a global limit as well as a way to react to low memory situations
bool CanvasTexture::useSurfaceTexture()
{
if (!m_useHwAcceleration)
return false;
if (m_size.isEmpty())
return false;
return (m_size.width() < s_maxTextureSize) && (m_size.height() < s_maxTextureSize);
}
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
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