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replicant-frameworks_native/libs/ui/FramebufferNativeWindow.cpp
Dan Stoza f10c46ef85 Enable clang for libui/libgui/surfaceflinger 
Enables clang and C++11 for libui/libgui/surfaceflinger, and
eliminates all compile-time warnings.

Change-Id: Ie237fdb5ae44f2bfcddaa884f9c65ec3f08ae50f
2014-11-11 14:28:22 -08:00

375 lines
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/*
**
** Copyright 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 "FramebufferNativeWindow"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <cutils/log.h>
#include <cutils/atomic.h>
#include <utils/threads.h>
#include <utils/RefBase.h>
#include <ui/ANativeObjectBase.h>
#include <ui/Fence.h>
#define INCLUDED_FROM_FRAMEBUFFER_NATIVE_WINDOW_CPP
#include <ui/FramebufferNativeWindow.h>
#undef INCLUDED_FROM_FRAMEBUFFER_NATIVE_WINDOW_CPP
#include <ui/Rect.h>
#include <EGL/egl.h>
#include <hardware/hardware.h>
#include <hardware/gralloc.h>
// ----------------------------------------------------------------------------
namespace android {
// ----------------------------------------------------------------------------
class NativeBuffer
: public ANativeObjectBase<
ANativeWindowBuffer,
NativeBuffer,
LightRefBase<NativeBuffer> >
{
public:
NativeBuffer(int w, int h, int f, int u) : BASE() {
ANativeWindowBuffer::width = w;
ANativeWindowBuffer::height = h;
ANativeWindowBuffer::format = f;
ANativeWindowBuffer::usage = u;
}
private:
friend class LightRefBase<NativeBuffer>;
~NativeBuffer() { }; // this class cannot be overloaded
};
/*
* This implements the (main) framebuffer management. This class is used
* mostly by SurfaceFlinger, but also by command line GL application.
*
* In fact this is an implementation of ANativeWindow on top of
* the framebuffer.
*
* Currently it is pretty simple, it manages only two buffers (the front and
* back buffer).
*
*/
FramebufferNativeWindow::FramebufferNativeWindow()
: BASE(), fbDev(0), grDev(0), mUpdateOnDemand(false)
{
hw_module_t const* module;
if (hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &module) == 0) {
int stride;
int err;
int i;
err = framebuffer_open(module, &fbDev);
ALOGE_IF(err, "couldn't open framebuffer HAL (%s)", strerror(-err));
err = gralloc_open(module, &grDev);
ALOGE_IF(err, "couldn't open gralloc HAL (%s)", strerror(-err));
// bail out if we can't initialize the modules
if (!fbDev || !grDev)
return;
mUpdateOnDemand = (fbDev->setUpdateRect != 0);
// initialize the buffer FIFO
if(fbDev->numFramebuffers >= MIN_NUM_FRAME_BUFFERS &&
fbDev->numFramebuffers <= MAX_NUM_FRAME_BUFFERS){
mNumBuffers = fbDev->numFramebuffers;
} else {
mNumBuffers = MIN_NUM_FRAME_BUFFERS;
}
mNumFreeBuffers = mNumBuffers;
mBufferHead = mNumBuffers-1;
/*
* This does not actually change the framebuffer format. It merely
* fakes this format to surfaceflinger so that when it creates
* framebuffer surfaces it will use this format. It's really a giant
* HACK to allow interworking with buggy gralloc+GPU driver
* implementations. You should *NEVER* need to set this for shipping
* devices.
*/
#ifdef FRAMEBUFFER_FORCE_FORMAT
*((uint32_t *)&fbDev->format) = FRAMEBUFFER_FORCE_FORMAT;
#endif
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[i]->handle, &buffers[i]->stride);
ALOGE_IF(err, "fb buffer %d allocation failed w=%d, h=%d, err=%s",
i, 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;
const_cast<float&>(ANativeWindow::ydpi) = fbDev->ydpi;
const_cast<int&>(ANativeWindow::minSwapInterval) =
fbDev->minSwapInterval;
const_cast<int&>(ANativeWindow::maxSwapInterval) =
fbDev->maxSwapInterval;
} else {
ALOGE("Couldn't get gralloc module");
}
ANativeWindow::setSwapInterval = setSwapInterval;
ANativeWindow::dequeueBuffer = dequeueBuffer;
ANativeWindow::queueBuffer = queueBuffer;
ANativeWindow::query = query;
ANativeWindow::perform = perform;
ANativeWindow::dequeueBuffer_DEPRECATED = dequeueBuffer_DEPRECATED;
ANativeWindow::lockBuffer_DEPRECATED = lockBuffer_DEPRECATED;
ANativeWindow::queueBuffer_DEPRECATED = queueBuffer_DEPRECATED;
}
FramebufferNativeWindow::~FramebufferNativeWindow()
{
if (grDev) {
for(int i = 0; i < mNumBuffers; i++) {
if (buffers[i] != NULL) {
grDev->free(grDev, buffers[i]->handle);
}
}
gralloc_close(grDev);
}
if (fbDev) {
framebuffer_close(fbDev);
}
}
status_t FramebufferNativeWindow::setUpdateRectangle(const Rect& r)
{
if (!mUpdateOnDemand) {
return INVALID_OPERATION;
}
return fbDev->setUpdateRect(fbDev, r.left, r.top, r.width(), r.height());
}
status_t FramebufferNativeWindow::compositionComplete()
{
if (fbDev->compositionComplete) {
return fbDev->compositionComplete(fbDev);
}
return INVALID_OPERATION;
}
int FramebufferNativeWindow::setSwapInterval(
ANativeWindow* window, int interval)
{
framebuffer_device_t* fb = getSelf(window)->fbDev;
return fb->setSwapInterval(fb, interval);
}
void FramebufferNativeWindow::dump(String8& result) {
if (fbDev->common.version >= 1 && fbDev->dump) {
const size_t SIZE = 4096;
char buffer[SIZE];
fbDev->dump(fbDev, buffer, SIZE);
result.append(buffer);
}
}
// only for debugging / logging
int FramebufferNativeWindow::getCurrentBufferIndex() const
{
Mutex::Autolock _l(mutex);
const int index = mCurrentBufferIndex;
return index;
}
int FramebufferNativeWindow::dequeueBuffer_DEPRECATED(ANativeWindow* window,
ANativeWindowBuffer** buffer)
{
int fenceFd = -1;
int result = dequeueBuffer(window, buffer, &fenceFd);
sp<Fence> fence(new Fence(fenceFd));
int waitResult = fence->wait(Fence::TIMEOUT_NEVER);
if (waitResult != OK) {
ALOGE("dequeueBuffer_DEPRECATED: Fence::wait returned an "
"error: %d", waitResult);
return waitResult;
}
return result;
}
int FramebufferNativeWindow::dequeueBuffer(ANativeWindow* window,
ANativeWindowBuffer** buffer, int* fenceFd)
{
FramebufferNativeWindow* self = getSelf(window);
Mutex::Autolock _l(self->mutex);
framebuffer_device_t* fb = self->fbDev;
int index = self->mBufferHead++;
if (self->mBufferHead >= self->mNumBuffers)
self->mBufferHead = 0;
// wait for a free non-front buffer
while (self->mNumFreeBuffers < 2) {
self->mCondition.wait(self->mutex);
}
ALOG_ASSERT(self->buffers[index] != self->front);
// get this buffer
self->mNumFreeBuffers--;
self->mCurrentBufferIndex = index;
*buffer = self->buffers[index].get();
*fenceFd = -1;
return 0;
}
int FramebufferNativeWindow::lockBuffer_DEPRECATED(ANativeWindow* /*window*/,
ANativeWindowBuffer* /*buffer*/)
{
return NO_ERROR;
}
int FramebufferNativeWindow::queueBuffer_DEPRECATED(ANativeWindow* window,
ANativeWindowBuffer* buffer)
{
return queueBuffer(window, buffer, -1);
}
int FramebufferNativeWindow::queueBuffer(ANativeWindow* window,
ANativeWindowBuffer* buffer, int fenceFd)
{
FramebufferNativeWindow* self = getSelf(window);
Mutex::Autolock _l(self->mutex);
framebuffer_device_t* fb = self->fbDev;
buffer_handle_t handle = static_cast<NativeBuffer*>(buffer)->handle;
sp<Fence> fence(new Fence(fenceFd));
fence->wait(Fence::TIMEOUT_NEVER);
const int index = self->mCurrentBufferIndex;
int res = fb->post(fb, handle);
self->front = static_cast<NativeBuffer*>(buffer);
self->mNumFreeBuffers++;
self->mCondition.broadcast();
return res;
}
int FramebufferNativeWindow::query(const ANativeWindow* window,
int what, int* value)
{
const FramebufferNativeWindow* self = getSelf(window);
Mutex::Autolock _l(self->mutex);
framebuffer_device_t* fb = self->fbDev;
switch (what) {
case NATIVE_WINDOW_WIDTH:
*value = fb->width;
return NO_ERROR;
case NATIVE_WINDOW_HEIGHT:
*value = fb->height;
return NO_ERROR;
case NATIVE_WINDOW_FORMAT:
*value = fb->format;
return NO_ERROR;
case NATIVE_WINDOW_CONCRETE_TYPE:
*value = NATIVE_WINDOW_FRAMEBUFFER;
return NO_ERROR;
case NATIVE_WINDOW_QUEUES_TO_WINDOW_COMPOSER:
*value = 0;
return NO_ERROR;
case NATIVE_WINDOW_DEFAULT_WIDTH:
*value = fb->width;
return NO_ERROR;
case NATIVE_WINDOW_DEFAULT_HEIGHT:
*value = fb->height;
return NO_ERROR;
case NATIVE_WINDOW_TRANSFORM_HINT:
*value = 0;
return NO_ERROR;
}
*value = 0;
return BAD_VALUE;
}
int FramebufferNativeWindow::perform(ANativeWindow* /*window*/,
int operation, ...)
{
switch (operation) {
case NATIVE_WINDOW_CONNECT:
case NATIVE_WINDOW_DISCONNECT:
case NATIVE_WINDOW_SET_USAGE:
case NATIVE_WINDOW_SET_BUFFERS_GEOMETRY:
case NATIVE_WINDOW_SET_BUFFERS_DIMENSIONS:
case NATIVE_WINDOW_SET_BUFFERS_FORMAT:
case NATIVE_WINDOW_SET_BUFFERS_TRANSFORM:
case NATIVE_WINDOW_API_CONNECT:
case NATIVE_WINDOW_API_DISCONNECT:
// TODO: we should implement these
return NO_ERROR;
case NATIVE_WINDOW_LOCK:
case NATIVE_WINDOW_UNLOCK_AND_POST:
case NATIVE_WINDOW_SET_CROP:
case NATIVE_WINDOW_SET_BUFFER_COUNT:
case NATIVE_WINDOW_SET_BUFFERS_TIMESTAMP:
case NATIVE_WINDOW_SET_SCALING_MODE:
return INVALID_OPERATION;
}
return NAME_NOT_FOUND;
}
// ----------------------------------------------------------------------------
}; // namespace android
// ----------------------------------------------------------------------------
using namespace android;
EGLNativeWindowType android_createDisplaySurface(void)
{
FramebufferNativeWindow* w;
w = new FramebufferNativeWindow();
if (w->getDevice() == NULL) {
// get a ref so it can be destroyed when we exit this block
sp<FramebufferNativeWindow> ref(w);
return NULL;
}
return (EGLNativeWindowType)w;
}
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