The Tor Browser: widget/gonk/libdisplay/GonkDisplayJB.cpp@6474c204b198 (annotated)

widget/gonk/libdisplay/GonkDisplayJB.cpp@6474c204b198 (annotated)

widget/gonk/libdisplay/GonkDisplayJB.cpp

Wed, 31 Dec 2014 06:09:35 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Wed, 31 Dec 2014 06:09:35 +0100
changeset 0: 6474c204b198
permissions: -rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 /* Copyright 2013 Mozilla Foundation and Mozilla contributors
  *
  * 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 "GonkDisplayJB.h"
 #if ANDROID_VERSION == 17
 #include <gui/SurfaceTextureClient.h>
 #else
 #include <gui/Surface.h>
 #include <gui/GraphicBufferAlloc.h>
 #endif
 #include <hardware/hardware.h>
 #include <hardware/hwcomposer.h>
 #include <hardware/power.h>
 #include <suspend/autosuspend.h>
 #if ANDROID_VERSION == 17
 #include "GraphicBufferAlloc.h"
 #endif
 #include "BootAnimation.h"
 using namespace android;
 namespace mozilla {
 static GonkDisplayJB* sGonkDisplay = nullptr;
 GonkDisplayJB::GonkDisplayJB()
     : mList(nullptr)
     , mModule(nullptr)
     , mFBModule(nullptr)
     , mHwc(nullptr)
     , mFBDevice(nullptr)
     , mEnabledCallback(nullptr)
     , mPowerModule(nullptr)
 {
     int err = hw_get_module(GRALLOC_HARDWARE_MODULE_ID, &mFBModule);
     ALOGW_IF(err, "%s module not found", GRALLOC_HARDWARE_MODULE_ID);
     if (!err) {
         err = framebuffer_open(mFBModule, &mFBDevice);
         ALOGW_IF(err, "could not open framebuffer");
     }
     if (!err && mFBDevice) {
         mWidth = mFBDevice->width;
 	 mHeight = mFBDevice->height;
 	 xdpi = mFBDevice->xdpi;
         /* The emulator actually reports RGBA_8888, but EGL doesn't return
          * any matching configuration. We force RGBX here to fix it. */
         surfaceformat = HAL_PIXEL_FORMAT_RGBX_8888;
     }
     err = hw_get_module(HWC_HARDWARE_MODULE_ID, &mModule);
     ALOGW_IF(err, "%s module not found", HWC_HARDWARE_MODULE_ID);
     if (!err) {
         err = hwc_open_1(mModule, &mHwc);
         ALOGE_IF(err, "%s device failed to initialize (%s)",
                  HWC_HARDWARE_COMPOSER, strerror(-err));
     }
     /* Fallback on the FB rendering path instead of trying to support HWC 1.0 */
     if (!err && mHwc->common.version == HWC_DEVICE_API_VERSION_1_0) {
         hwc_close_1(mHwc);
         mHwc = nullptr;
     }
     if (!err && mHwc) {
         if (mFBDevice) {
             framebuffer_close(mFBDevice);
             mFBDevice = nullptr;
         }
         int32_t values[3];
         const uint32_t attrs[] = {
             HWC_DISPLAY_WIDTH,
             HWC_DISPLAY_HEIGHT,
             HWC_DISPLAY_DPI_X,
             HWC_DISPLAY_NO_ATTRIBUTE
         };
         mHwc->getDisplayAttributes(mHwc, 0, 0, attrs, values);
         mWidth = values[0];
         mHeight = values[1];
         xdpi = values[2] / 1000.0f;
         surfaceformat = HAL_PIXEL_FORMAT_RGBA_8888;
     }
     err = hw_get_module(POWER_HARDWARE_MODULE_ID,
                                            (hw_module_t const**)&mPowerModule);
     if (!err)
         mPowerModule->init(mPowerModule);
     ALOGW_IF(err, "Couldn't load %s module (%s)", POWER_HARDWARE_MODULE_ID, strerror(-err));
     mAlloc = new GraphicBufferAlloc();
     status_t error;
     uint32_t usage = GRALLOC_USAGE_HW_FB | GRALLOC_USAGE_HW_RENDER | GRALLOC_USAGE_HW_COMPOSER;
     mBootAnimBuffer = mAlloc->createGraphicBuffer(mWidth, mHeight, surfaceformat, usage, &error);
     if (error != NO_ERROR || !mBootAnimBuffer.get()) {
         ALOGI("Trying to create BRGA format framebuffer");
         surfaceformat = HAL_PIXEL_FORMAT_BGRA_8888;
         mBootAnimBuffer = mAlloc->createGraphicBuffer(mWidth, mHeight, surfaceformat, usage, &error);
     }
 #if ANDROID_VERSION >= 19
     sp<BufferQueue> bq = new BufferQueue(mAlloc);
 #else
     sp<BufferQueue> bq = new BufferQueue(true, mAlloc);
 #endif
     mFBSurface = new FramebufferSurface(0, mWidth, mHeight, surfaceformat, bq);
 #if ANDROID_VERSION == 17
     sp<SurfaceTextureClient> stc = new SurfaceTextureClient(static_cast<sp<ISurfaceTexture> >(mFBSurface->getBufferQueue()));
 #else
     sp<Surface> stc = new Surface(static_cast<sp<IGraphicBufferProducer> >(bq));
 #endif
     mSTClient = stc;
     mList = (hwc_display_contents_1_t *)malloc(sizeof(*mList) + (sizeof(hwc_layer_1_t)*2));
     if (mHwc)
         mHwc->blank(mHwc, HWC_DISPLAY_PRIMARY, 0);
     if (error == NO_ERROR && mBootAnimBuffer.get()) {
         ALOGI("Starting bootanimation with (%d) format framebuffer", surfaceformat);
         StartBootAnimation();
     } else
         ALOGW("Couldn't show bootanimation (%s)", strerror(-error));
 }
 GonkDisplayJB::~GonkDisplayJB()
 {
     if (mHwc)
         hwc_close_1(mHwc);
     if (mFBDevice)
         framebuffer_close(mFBDevice);
     free(mList);
 }
 ANativeWindow*
 GonkDisplayJB::GetNativeWindow()
 {
     return mSTClient.get();
 }
 void
 GonkDisplayJB::SetEnabled(bool enabled)
 {
     if (enabled) {
         autosuspend_disable();
         mPowerModule->setInteractive(mPowerModule, true);
     }
     if (mHwc)
         mHwc->blank(mHwc, HWC_DISPLAY_PRIMARY, !enabled);
     else if (mFBDevice->enableScreen)
         mFBDevice->enableScreen(mFBDevice, enabled);
     if (mEnabledCallback)
         mEnabledCallback(enabled);
     if (!enabled) {
         autosuspend_enable();
         mPowerModule->setInteractive(mPowerModule, false);
     }
 }
 void
 GonkDisplayJB::OnEnabled(OnEnabledCallbackType callback)
 {
     mEnabledCallback = callback;
 }
 void*
 GonkDisplayJB::GetHWCDevice()
 {
     return mHwc;
 }
 void*
 GonkDisplayJB::GetFBSurface()
 {
     return mFBSurface.get();
 }
 bool
 GonkDisplayJB::SwapBuffers(EGLDisplay dpy, EGLSurface sur)
 {
     StopBootAnimation();
     mBootAnimBuffer = nullptr;
     // Should be called when composition rendering is complete for a frame.
     // Only HWC v1.0 needs this call.
     // HWC > v1.0 case, do not call compositionComplete().
     // mFBDevice is present only when HWC is v1.0.
     if (mFBDevice && mFBDevice->compositionComplete) {
         mFBDevice->compositionComplete(mFBDevice);
     }
 #if ANDROID_VERSION == 17
     mList->dpy = dpy;
     mList->sur = sur;
 #else
     mList->outbuf = nullptr;
     mList->outbufAcquireFenceFd = -1;
 #endif
     eglSwapBuffers(dpy, sur);
     return Post(mFBSurface->lastHandle, mFBSurface->GetPrevFBAcquireFd());
 }
 bool
 GonkDisplayJB::Post(buffer_handle_t buf, int fence)
 {
     if (!mHwc) {
         if (fence >= 0)
             close(fence);
         return !mFBDevice->post(mFBDevice, buf);
     }
     hwc_display_contents_1_t *displays[HWC_NUM_DISPLAY_TYPES] = {NULL};
     const hwc_rect_t r = { 0, 0, mWidth, mHeight };
     displays[HWC_DISPLAY_PRIMARY] = mList;
     mList->retireFenceFd = -1;
     mList->numHwLayers = 2;
     mList->flags = HWC_GEOMETRY_CHANGED;
     mList->hwLayers[0].compositionType = HWC_FRAMEBUFFER;
     mList->hwLayers[0].hints = 0;
     /* Skip this layer so the hwc module doesn't complain about null handles */
     mList->hwLayers[0].flags = HWC_SKIP_LAYER;
     mList->hwLayers[0].backgroundColor = {0};
     mList->hwLayers[0].acquireFenceFd = -1;
     mList->hwLayers[0].releaseFenceFd = -1;
     /* hwc module checks displayFrame even though it shouldn't */
     mList->hwLayers[0].displayFrame = r;
     mList->hwLayers[1].compositionType = HWC_FRAMEBUFFER_TARGET;
     mList->hwLayers[1].hints = 0;
     mList->hwLayers[1].flags = 0;
     mList->hwLayers[1].handle = buf;
     mList->hwLayers[1].transform = 0;
     mList->hwLayers[1].blending = HWC_BLENDING_PREMULT;
 #if ANDROID_VERSION >= 19
     if (mHwc->common.version >= HWC_DEVICE_API_VERSION_1_3) {
         mList->hwLayers[1].sourceCropf.left = 0;
         mList->hwLayers[1].sourceCropf.top = 0;
         mList->hwLayers[1].sourceCropf.right = mWidth;
         mList->hwLayers[1].sourceCropf.bottom = mHeight;
     } else {
         mList->hwLayers[1].sourceCrop = r;
     }
 #else
     mList->hwLayers[1].sourceCrop = r;
 #endif
     mList->hwLayers[1].displayFrame = r;
     mList->hwLayers[1].visibleRegionScreen.numRects = 1;
     mList->hwLayers[1].visibleRegionScreen.rects = &mList->hwLayers[1].displayFrame;
     mList->hwLayers[1].acquireFenceFd = fence;
     mList->hwLayers[1].releaseFenceFd = -1;
 #if ANDROID_VERSION == 18
     mList->hwLayers[1].planeAlpha = 0xFF;
 #endif
     mHwc->prepare(mHwc, HWC_NUM_DISPLAY_TYPES, displays);
     int err = mHwc->set(mHwc, HWC_NUM_DISPLAY_TYPES, displays);
     mFBSurface->setReleaseFenceFd(mList->hwLayers[1].releaseFenceFd);
     if (mList->retireFenceFd >= 0)
         close(mList->retireFenceFd);
     return !err;
 }
 ANativeWindowBuffer*
 GonkDisplayJB::DequeueBuffer()
 {
     return static_cast<ANativeWindowBuffer*>(mBootAnimBuffer.get());
 }
 bool
 GonkDisplayJB::QueueBuffer(ANativeWindowBuffer* buf)
 {
     bool success = Post(buf->handle, -1);
     return success;
 }
 void
 GonkDisplayJB::UpdateFBSurface(EGLDisplay dpy, EGLSurface sur)
 {
     StopBootAnimation();
     mBootAnimBuffer = nullptr;
     eglSwapBuffers(dpy, sur);
 }
 void
 GonkDisplayJB::SetFBReleaseFd(int fd)
 {
     mFBSurface->setReleaseFenceFd(fd);
 }
 int
 GonkDisplayJB::GetPrevFBAcquireFd()
 {
     return mFBSurface->GetPrevFBAcquireFd();
 }
 __attribute__ ((visibility ("default")))
 GonkDisplay*
 GetGonkDisplay()
 {
     if (!sGonkDisplay)
         sGonkDisplay = new GonkDisplayJB();
     return sGonkDisplay;
 }
 } // namespace mozilla

The Tor Browser / annotate

widget/gonk/libdisplay/GonkDisplayJB.cpp@6474c204b198 (annotated)

widget/gonk/libdisplay/GonkDisplayJB.cpp