display: External display refactor
- cleans up external library
- add separate library for virtual display
- process virtual updates in its separate path
in hwc.
- Acquire blank mutex lock for one complete drawing
cycle
Change-Id: Ib984c578464a131ecdb27ee48960f58d68b7a5a7
diff --git a/libvirtual/virtual.cpp b/libvirtual/virtual.cpp
new file mode 100644
index 0000000..e2f239a
--- /dev/null
+++ b/libvirtual/virtual.cpp
@@ -0,0 +1,128 @@
+/*
+* Copyright (c) 2013 The Linux Foundation. All rights reserved.
+*
+* 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.
+* * Neither the name of The Linux Foundation. nor the names of its
+* contributors may be used to endorse or promote products derived
+* from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+* 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 DEBUG 0
+#include <ctype.h>
+#include <fcntl.h>
+#include <media/IAudioPolicyService.h>
+#include <media/AudioSystem.h>
+#include <utils/threads.h>
+#include <utils/Errors.h>
+#include <utils/Log.h>
+
+#include <linux/msm_mdp.h>
+#include <linux/fb.h>
+#include <sys/ioctl.h>
+#include <sys/poll.h>
+#include <sys/resource.h>
+#include <cutils/properties.h>
+#include "hwc_utils.h"
+#include "virtual.h"
+#include "overlayUtils.h"
+#include "overlay.h"
+
+using namespace android;
+
+namespace qhwc {
+
+#define MAX_SYSFS_FILE_PATH 255
+
+int VirtualDisplay::configure() {
+ if(!openFrameBuffer())
+ return -1;
+
+ if(ioctl(mFd, FBIOGET_VSCREENINFO, &mVInfo) < 0) {
+ ALOGD("%s: FBIOGET_VSCREENINFO failed with %s", __FUNCTION__,
+ strerror(errno));
+ return -1;
+ }
+ setAttributes();
+ return 0;
+}
+
+int VirtualDisplay::teardown() {
+ closeFrameBuffer();
+ memset(&mVInfo, 0, sizeof(mVInfo));
+ return 0;
+}
+
+VirtualDisplay::VirtualDisplay(hwc_context_t* ctx):mFd(-1),
+ mHwcContext(ctx)
+{
+ memset(&mVInfo, 0, sizeof(mVInfo));
+}
+
+VirtualDisplay::~VirtualDisplay()
+{
+ closeFrameBuffer();
+}
+
+void VirtualDisplay::setAttributes() {
+ mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].xres = mVInfo.xres;
+ mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].yres = mVInfo.yres;
+ mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].vsync_period =
+ 1000000000l /60;
+ ALOGD_IF(DEBUG,"%s: Setting Virtual Attr: res(%d x %d)",__FUNCTION__,
+ mVInfo.xres, mVInfo.yres);
+}
+
+bool VirtualDisplay::openFrameBuffer()
+{
+ if (mFd == -1) {
+ int fbNum = overlay::Overlay::getInstance()->
+ getFbForDpy(HWC_DISPLAY_VIRTUAL);
+
+ char strDevPath[MAX_SYSFS_FILE_PATH];
+ sprintf(strDevPath,"/dev/graphics/fb%d", fbNum);
+
+ mFd = open(strDevPath, O_RDWR);
+ if(mFd < 0) {
+ ALOGE("%s: Unable to open %s ", __FUNCTION__,strDevPath);
+ return -1;
+ }
+
+ mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].fd = mFd;
+ }
+ return 1;
+}
+
+bool VirtualDisplay::closeFrameBuffer()
+{
+ if(mFd >= 0) {
+ if(close(mFd) < 0 ) {
+ ALOGE("%s: Unable to close FD(%d)", __FUNCTION__, mFd);
+ return -1;
+ }
+ mFd = -1;
+ mHwcContext->dpyAttr[HWC_DISPLAY_VIRTUAL].fd = mFd;
+ }
+ return 1;
+}
+};