hwc: vd: Add support for Dynamic Resolution Change (DRC)
1. Add support for Dynamic Resolution Change
We add support for DRC on virtual displays. This is achieved
by reading the width and height attributes that are set as
part of the buffer handle metadata.
For the WFD use cases, the WFD MultiMedia framework will
update the width and height during DRC by using setMetaData
API with UPDATE_BUFFER_GEOMETRY. We then proceed to configure
WB with the new resolution for subsequent frames.
2. Update WB dump with output buffer format and resolution
Update WB dump with output buffer format and resolution. This is
helpful for debugging purposes.
Change-Id: I537277499041bffc7bfc5c6e3d024b67f80fce44
diff --git a/liboverlay/overlayWriteback.cpp b/liboverlay/overlayWriteback.cpp
index de18e55..ed42a9f 100644
--- a/liboverlay/overlayWriteback.cpp
+++ b/liboverlay/overlayWriteback.cpp
@@ -263,9 +263,12 @@
bool Writeback::getDump(char *buf, size_t len) {
if(sWb) {
utils::getDump(buf, len, "WBData", sWb->mFbData);
- char str[4] = {'\0'};
- snprintf(str, 4, "\n");
- strlcat(buf, str, len);
+ char outputBufferInfo[256];
+ snprintf(outputBufferInfo, sizeof(outputBufferInfo),
+ "OutputBuffer xres=%d yres=%d format=%s\n\n",
+ sWb->getWidth(), sWb->getHeight(),
+ utils::getFormatString(sWb->getOutputFormat()));
+ strlcat(buf, outputBufferInfo, len);
return true;
}
return false;
diff --git a/liboverlay/overlayWriteback.h b/liboverlay/overlayWriteback.h
index ebd319f..21186e6 100644
--- a/liboverlay/overlayWriteback.h
+++ b/liboverlay/overlayWriteback.h
@@ -81,6 +81,8 @@
bool queueBuffer(int opFd, uint32_t opOffset);
uint32_t getOffset() const { return mWbMem.getOffset(); }
int getDstFd() const { return mWbMem.getDstFd(); }
+ int getWidth() const { return mXres; }
+ int getHeight() const { return mYres; }
/* Subject to GC if writeback isnt used for a drawing round.
* Get always if caching the value.
*/