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Nokius/hwcomposer_backend_v11.cpp Secret

Last active Aug 29, 2015
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hwcomposer.cpp changes
/****************************************************************************
**
** Copyright (C) 2013 Jolla Ltd.
** Contact: Thomas Perl <thomas.perl@jolla.com>
**
** This file is part of the hwcomposer plugin.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <android-version.h>
#include "hwcomposer_backend_v11.h"
#ifdef HWC_PLUGIN_HAVE_HWCOMPOSER1_API
class HWComposer : public HWComposerNativeWindow
{
private:
hwc_layer_1_t *fblayer;
hwc_composer_device_1_t *hwcdevice;
hwc_display_contents_1_t **mlist;
int num_displays;
protected:
void present(HWComposerNativeWindowBuffer *buffer);
public:
HWComposer(unsigned int width, unsigned int height, unsigned int format,
hwc_composer_device_1_t *device, hwc_display_contents_1_t **mList,
hwc_layer_1_t *layer, int num_displays);
void set();
};
HWComposer::HWComposer(unsigned int width, unsigned int height, unsigned int format,
hwc_composer_device_1_t *device, hwc_display_contents_1_t **mList,
hwc_layer_1_t *layer, int num_displays)
: HWComposerNativeWindow(width, height, format)
, fblayer(layer)
, hwcdevice(device)
, mlist(mList)
, num_displays(num_displays)
{
}
void HWComposer::present(HWComposerNativeWindowBuffer *buffer)
{
if (getFenceBufferFd(buffer) != -1) {
//sync_wait(getFenceBufferFd(buffer), -1);
close(getFenceBufferFd(buffer));
setFenceBufferFd(buffer, -1);
}
int oldretire = mlist[0]->retireFenceFd;
mlist[0]->retireFenceFd = -1;
fblayer->handle = buffer->handle;
fblayer->acquireFenceFd = getFenceBufferFd(buffer);
fblayer->releaseFenceFd = -1;
int err = hwcdevice->prepare(hwcdevice, num_displays, mlist);
HWC_PLUGIN_EXPECT_ZERO(err);
err = hwcdevice->set(hwcdevice, num_displays, mlist);
HWC_PLUGIN_EXPECT_ZERO(err);
setFenceBufferFd(buffer, fblayer->releaseFenceFd);
if (oldretire != -1)
{
//sync_wait(oldretire, -1);
close(oldretire);
}
}
HwComposerBackend_v11::HwComposerBackend_v11(hw_module_t *hwc_module, hw_device_t *hw_device, int num_displays)
: HwComposerBackend(hwc_module)
, hwc_device((hwc_composer_device_1_t *)hw_device)
, hwc_win(NULL)
, hwc_list(NULL)
, hwc_mList(NULL)
, oldretire(-1)
, oldrelease(-1)
, oldrelease2(-1)
, num_displays(num_displays)
{
sleepDisplay(false);
}
HwComposerBackend_v11::~HwComposerBackend_v11()
{
// Destroy the window if it hasn't yet been destroyed
if (hwc_win != NULL) {
delete hwc_win;
}
// Close the hwcomposer handle
HWC_PLUGIN_EXPECT_ZERO(hwc_close_1(hwc_device));
if (hwc_mList != NULL) {
free(hwc_mList);
}
if (hwc_list != NULL) {
free(hwc_list);
}
}
EGLNativeDisplayType
HwComposerBackend_v11::display()
{
return EGL_DEFAULT_DISPLAY;
}
EGLNativeWindowType
HwComposerBackend_v11::createWindow(int width, int height)
{
// We expect that we haven't created a window already, if we had, we
// would leak stuff, and we want to avoid that for obvious reasons.
HWC_PLUGIN_EXPECT_NULL(hwc_win);
HWC_PLUGIN_EXPECT_NULL(hwc_list);
HWC_PLUGIN_EXPECT_NULL(hwc_mList);
size_t neededsize = sizeof(hwc_display_contents_1_t) + 2 * sizeof(hwc_layer_1_t);
hwc_list = (hwc_display_contents_1_t *) malloc(neededsize);
hwc_mList = (hwc_display_contents_1_t **) malloc(num_displays * sizeof(hwc_display_contents_1_t *));
const hwc_rect_t r = { 0, 0, width, height };
for (int i = 0; i < num_displays; i++) {
hwc_mList[i] = hwc_list;
}
hwc_layer_1_t *layer = NULL;
layer = &hwc_list->hwLayers[0];
memset(layer, 0, sizeof(hwc_layer_1_t));
layer->compositionType = HWC_FRAMEBUFFER;
layer->hints = 0;
layer->flags = 0;
layer->handle = 0;
layer->transform = 0;
layer->blending = HWC_BLENDING_NONE;
layer->sourceCrop = r;
#ifdef HWC_DEVICE_API_VERSION_1_3
layer->sourceCropf.top = 0.0f;
layer->sourceCropf.left = 0.0f;
layer->sourceCropf.bottom = (float) height;
layer->sourceCropf.right = (float) width;
#endif
layer->displayFrame = r;
layer->visibleRegionScreen.numRects = 1;
layer->visibleRegionScreen.rects = &layer->displayFrame;
layer->acquireFenceFd = -1;
layer->releaseFenceFd = -1;
#if (ANDROID_VERSION_MAJOR >= 4) && (ANDROID_VERSION_MINOR >= 3)
layer->planeAlpha = 0xff;
#endif
layer = &hwc_list->hwLayers[1];
memset(layer, 0, sizeof(hwc_layer_1_t));
layer->compositionType = HWC_FRAMEBUFFER_TARGET;
layer->hints = 0;
layer->flags = 0;
layer->handle = 0;
layer->transform = 0;
layer->blending = HWC_BLENDING_NONE;
layer->sourceCrop = r;
#ifdef HWC_DEVICE_API_VERSION_1_3
layer->sourceCropf.top = 0.0f;
layer->sourceCropf.left = 0.0f;
layer->sourceCropf.bottom = (float) height;
layer->sourceCropf.right = (float) width;
#endif
layer->displayFrame = r;
layer->visibleRegionScreen.numRects = 1;
layer->visibleRegionScreen.rects = &layer->displayFrame;
layer->acquireFenceFd = -1;
layer->releaseFenceFd = -1;
#if (ANDROID_VERSION_MAJOR >= 4) && (ANDROID_VERSION_MINOR >= 3)
layer->planeAlpha = 0xff;
#endif
hwc_list->retireFenceFd = -1;
hwc_list->flags = HWC_GEOMETRY_CHANGED;
hwc_list->numHwLayers = 2;
hwc_win = new HWComposer(width, height, HAL_PIXEL_FORMAT_RGBA_8888,
hwc_device, hwc_mList, &hwc_list->hwLayers[1], num_displays);
return (EGLNativeWindowType) static_cast<ANativeWindow *>(hwc_win);
}
void
HwComposerBackend_v11::destroyWindow(EGLNativeWindowType window)
{
Q_UNUSED(window);
// FIXME: Implement (delete hwc_win + set it to NULL?)
}
void
HwComposerBackend_v11::swap(EGLNativeDisplayType display, EGLSurface surface)
{
// TODO: Wait for vsync?
HWC_PLUGIN_ASSERT_NOT_NULL(hwc_win);
eglSwapBuffers(display, surface);
}
void
HwComposerBackend_v11::sleepDisplay(bool sleep)
{
if (sleep) {
HWC_PLUGIN_EXPECT_ZERO(hwc_device->blank(hwc_device, 0, 1));
} else {
HWC_PLUGIN_EXPECT_ZERO(hwc_device->blank(hwc_device, 0, 0));
if (hwc_list) {
hwc_list->flags |= HWC_GEOMETRY_CHANGED;
}
}
}
float
HwComposerBackend_v11::refreshRate()
{
// TODO: Implement new hwc 1.1 querying of vsync period per-display
//
// from hwcomposer_defs.h:
// "This query is not used for HWC_DEVICE_API_VERSION_1_1 and later.
// Instead, the per-display attribute HWC_DISPLAY_VSYNC_PERIOD is used."
return 60.0;
}
#endif /* HWC_PLUGIN_HAVE_HWCOMPOSER1_API */
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