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225 lines
7.5 KiB
225 lines
7.5 KiB
/* |
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* Copyright (c) 2013 The Linux Foundation. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are |
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* met: |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials provided |
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* with the distribution. |
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* * Neither the name of The Linux Foundation. nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS |
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR |
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE |
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN |
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* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#define DEBUG 0 |
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#include <ctype.h> |
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#include <fcntl.h> |
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#include <media/IAudioPolicyService.h> |
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#include <media/AudioSystem.h> |
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#include <utils/threads.h> |
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#include <utils/Errors.h> |
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#include <utils/Log.h> |
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#include <linux/msm_mdp.h> |
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#include <linux/fb.h> |
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#include <sys/ioctl.h> |
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#include <sys/poll.h> |
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#include <sys/resource.h> |
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#include <cutils/properties.h> |
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#include "hwc_utils.h" |
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#include "virtual.h" |
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#include "overlayUtils.h" |
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#include "overlay.h" |
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#include "mdp_version.h" |
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using namespace android; |
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namespace qhwc { |
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#define MAX_SYSFS_FILE_PATH 255 |
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/* Max. resolution assignable to virtual display. */ |
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#define SUPPORTED_VIRTUAL_AREA (1920*1080) |
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int VirtualDisplay::configure() { |
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if(!openFrameBuffer()) |
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return -1; |
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if(ioctl(mFd, FBIOGET_VSCREENINFO, &mVInfo) < 0) { |
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ALOGD("%s: FBIOGET_VSCREENINFO failed with %s", __FUNCTION__, |
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strerror(errno)); |
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return -1; |
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} |
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setAttributes(); |
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return 0; |
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} |
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void VirtualDisplay::getAttributes(int& width, int& height) { |
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width = mVInfo.xres; |
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height = mVInfo.yres; |
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} |
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int VirtualDisplay::teardown() { |
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closeFrameBuffer(); |
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memset(&mVInfo, 0, sizeof(mVInfo)); |
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// Reset the resolution when we close the fb for this device. We need |
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// this to distinguish between an ONLINE and RESUME event. |
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mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].xres = 0; |
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mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].yres = 0; |
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return 0; |
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} |
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VirtualDisplay::VirtualDisplay(hwc_context_t* ctx):mFd(-1), |
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mHwcContext(ctx) |
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{ |
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memset(&mVInfo, 0, sizeof(mVInfo)); |
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} |
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VirtualDisplay::~VirtualDisplay() |
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{ |
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closeFrameBuffer(); |
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} |
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/* Initializes the resolution attributes of the virtual display |
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that are reported to SurfaceFlinger. |
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Cases: |
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1. ONLINE event - initialize to frame buffer resolution |
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2. RESUME event - retain original resolution |
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*/ |
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void VirtualDisplay::initResolution(uint32_t &extW, uint32_t &extH) { |
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// On ONLINE event, display resolution attributes are 0. |
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if(extW == 0 || extH == 0){ |
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extW = mVInfo.xres; |
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extH = mVInfo.yres; |
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} |
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} |
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/* Sets the virtual resolution to match that of the primary |
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display in the event that the virtual display currently |
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connected has a lower resolution. NB: we always report the |
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highest available resolution to SurfaceFlinger. |
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*/ |
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void VirtualDisplay::setToPrimary(uint32_t maxArea, |
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uint32_t priW, |
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uint32_t priH, |
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uint32_t &extW, |
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uint32_t &extH) { |
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// for eg., primary in 1600p and WFD in 1080p |
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// we wont use downscale feature because MAX MDP |
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// writeback resolution supported is 1080p (tracked |
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// by SUPPORTED_VIRTUAL_AREA). |
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if((maxArea == (priW * priH)) |
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&& (maxArea <= SUPPORTED_VIRTUAL_AREA)) { |
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extW = priW; |
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extH = priH; |
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// If WFD is in landscape, assign the higher dimension |
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// to WFD's xres. |
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if(priH > priW) { |
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extW = priH; |
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extH = priW; |
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} |
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} |
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} |
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/* Set External Display MDP Downscale mode indicator. Only set to |
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TRUE for the following scenarios: |
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1. Valid DRC scenarios i.e. when the original WFD resolution |
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is greater than the new/requested resolution in mVInfo. |
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2. WFD down scale path i.e. when WFD resolution is lower than |
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primary resolution. |
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Furthermore, downscale mode is only valid when downscaling from |
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SUPPORTED_VIRTUAL_AREA to a lower resolution. |
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(SUPPORTED_VIRTUAL_AREA represents the maximum resolution that |
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we can configure to the virtual display) |
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*/ |
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void VirtualDisplay::setDownScaleMode(uint32_t maxArea) { |
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if((maxArea > (mVInfo.xres * mVInfo.yres)) |
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&& (maxArea <= SUPPORTED_VIRTUAL_AREA)) { |
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mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].mDownScaleMode = true; |
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}else { |
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mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].mDownScaleMode = false; |
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} |
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} |
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void VirtualDisplay::setAttributes() { |
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if(mHwcContext) { |
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uint32_t &extW = mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].xres; |
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uint32_t &extH = mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].yres; |
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uint32_t priW = mHwcContext->dpyAttr[HWC_DISPLAY_PRIMARY].xres; |
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uint32_t priH = mHwcContext->dpyAttr[HWC_DISPLAY_PRIMARY].yres; |
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initResolution(extW, extH); |
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// Dynamic Resolution Change depends on MDP downscaling. |
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// MDP downscale property will be ignored to exercise DRC use case. |
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// If DRC is in progress, ext WxH will have non-zero values. |
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bool isDRC = (extW > 0) && (extH > 0); |
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if(!qdutils::MDPVersion::getInstance().is8x26() |
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&& (mHwcContext->mMDPDownscaleEnabled || isDRC)) { |
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// maxArea represents the maximum resolution between |
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// primary and virtual display. |
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uint32_t maxArea = max((extW * extH), (priW * priH)); |
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setToPrimary(maxArea, priW, priH, extW, extH); |
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setDownScaleMode(maxArea); |
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} |
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mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].vsync_period = |
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1000000000l /60; |
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ALOGD_IF(DEBUG,"%s: Setting Virtual Attr: res(%d x %d)",__FUNCTION__, |
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mVInfo.xres, mVInfo.yres); |
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} |
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} |
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bool VirtualDisplay::openFrameBuffer() |
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{ |
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if (mFd == -1) { |
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int fbNum = overlay::Overlay::getInstance()-> |
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getFbForDpy(HWC_DISPLAY_VIRTUAL); |
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char strDevPath[MAX_SYSFS_FILE_PATH]; |
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snprintf(strDevPath,sizeof(strDevPath), "/dev/graphics/fb%d", fbNum); |
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mFd = open(strDevPath, O_RDWR); |
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if(mFd < 0) { |
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ALOGE("%s: Unable to open %s ", __FUNCTION__,strDevPath); |
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return -1; |
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} |
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mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].fd = mFd; |
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} |
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return 1; |
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} |
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bool VirtualDisplay::closeFrameBuffer() |
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{ |
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if(mFd >= 0) { |
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if(close(mFd) < 0 ) { |
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ALOGE("%s: Unable to close FD(%d)", __FUNCTION__, mFd); |
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return -1; |
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} |
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mFd = -1; |
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mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].fd = mFd; |
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} |
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return 1; |
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} |
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};
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