hwc: vds: Add support to dump layers, FB and WB output buffer
1. Add hook to dump the layers going to VDS based virtual display.
2. Furthermore, add utility function to dump the frame buffer and
WB output buffer. This will be enabled via a system property
debug.hwc.enable_vds_dump
Once dumping is enabled, the dumps can be extracted from
/data/vds.fb.FORMAT.XRESxYRES.raw
/data/vds.wb.FORMAT.XRESxYRES.raw
e.g. vds.fb.MDP_RGBA_8888.1152x1920.raw
Change-Id: I2435c5507961a52929411206892c005492d5c193
diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index 4708368..59e39bb 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -2080,6 +2080,24 @@
return true;
}
+void dumpBuffer(private_handle_t *ohnd, char *bufferName) {
+ if (ohnd != NULL && ohnd->base) {
+ char dumpFilename[PATH_MAX];
+ bool bResult = false;
+ snprintf(dumpFilename, sizeof(dumpFilename), "/data/%s.%s.%dx%d.raw",
+ bufferName,
+ overlay::utils::getFormatString(utils::getMdpFormat(ohnd->format)),
+ getWidth(ohnd), getHeight(ohnd));
+ FILE* fp = fopen(dumpFilename, "w+");
+ if (NULL != fp) {
+ bResult = (bool) fwrite((void*)ohnd->base, ohnd->size, 1, fp);
+ fclose(fp);
+ }
+ ALOGD("Buffer[%s] Dump to %s: %s",
+ bufferName, dumpFilename, bResult ? "Success" : "Fail");
+ }
+}
+
bool isGLESComp(hwc_context_t *ctx,
hwc_display_contents_1_t* list) {
int numAppLayers = ctx->listStats[HWC_DISPLAY_PRIMARY].numAppLayers;