overlay: Add API for WB clients to set secure flag for a session
Add API to set the secure flag on the WB interface, making the WB session
seccure. This is required for use cases such as secure playback when
AD is enabled.
Change-Id: Ifd6cb16f257e8eb27541e524905456c04cf06c3b
diff --git a/liboverlay/overlayWriteback.cpp b/liboverlay/overlayWriteback.cpp
index 50aa337..fdead74 100644
--- a/liboverlay/overlayWriteback.cpp
+++ b/liboverlay/overlayWriteback.cpp
@@ -75,7 +75,7 @@
}
//=========== class Writeback =================================================
-Writeback::Writeback() : mXres(0), mYres(0), mOpFmt(-1) {
+Writeback::Writeback() : mXres(0), mYres(0), mOpFmt(-1), mSecure(false) {
int fbNum = Overlay::getFbForDpy(Overlay::DPY_WRITEBACK);
if(!utils::openDev(mFd, fbNum, Res::fbPath, O_RDWR)) {
ALOGE("%s failed to init %s", __func__, Res::fbPath);
@@ -136,8 +136,8 @@
return true;
}
-bool Writeback::configureMemory(uint32_t size, bool isSecure) {
- if(!mWbMem.manageMem(size, isSecure)) {
+bool Writeback::configureMemory(uint32_t size) {
+ if(!mWbMem.manageMem(size, mSecure)) {
ALOGE("%s failed, memory failure", __func__);
return false;
}
@@ -215,6 +215,22 @@
return mOpFmt;
}
+bool Writeback::setSecure(bool isSecure) {
+ if(isSecure != mSecure) {
+ // Call IOCTL to set WB interface as secure
+ struct msmfb_metadata metadata;
+ memset(&metadata, 0 , sizeof(metadata));
+ metadata.op = metadata_op_wb_secure;
+ metadata.data.secure_en = isSecure;
+ if (ioctl(mFd.getFD(), MSMFB_METADATA_SET, &metadata) < 0) {
+ ALOGE("Error setting MDP WB secure");
+ return false;
+ }
+ mSecure = isSecure;
+ }
+ return true;
+}
+
//static
Writeback *Writeback::getInstance() {