MTP: Partial implementation of the GetObjectPropList command

In this initial implementation we only support fetching one property at a time.
Support depth = 0 (single object) or depth = 1 (all objects in a directory)
Reimplemented GetObjectPropValue on top of GetObjectPropList, since the former
is a special case of the latter.

Change-Id: Ia76ee61741d6ee3902b5c5d9fc094cf86dfaf650
Signed-off-by: Mike Lockwood <lockwood@google.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/media/mtp/MtpServer.cpp b/media/mtp/MtpServer.cpp
index 5ba6be9..6cf70ec 100644
--- a/media/mtp/MtpServer.cpp
+++ b/media/mtp/MtpServer.cpp
@@ -72,6 +72,10 @@ static const MtpOperationCode kSupportedOperationCodes[] = {
     MTP_OPERATION_GET_OBJECT_PROP_DESC,
     MTP_OPERATION_GET_OBJECT_PROP_VALUE,
     MTP_OPERATION_SET_OBJECT_PROP_VALUE,
+    MTP_OPERATION_GET_OBJECT_PROP_LIST,
+//    MTP_OPERATION_SET_OBJECT_PROP_LIST,
+//    MTP_OPERATION_GET_INTERDEPENDENT_PROP_DESC,
+//    MTP_OPERATION_SEND_OBJECT_PROP_LIST,
     MTP_OPERATION_GET_OBJECT_REFERENCES,
     MTP_OPERATION_SET_OBJECT_REFERENCES,
 //    MTP_OPERATION_SKIP,
@@ -276,6 +280,9 @@ bool MtpServer::handleRequest() {
         case MTP_OPERATION_RESET_DEVICE_PROP_VALUE:
             response = doResetDevicePropValue();
             break;
+        case MTP_OPERATION_GET_OBJECT_PROP_LIST:
+            response = doGetObjectPropList();
+            break;
         case MTP_OPERATION_GET_OBJECT_INFO:
             response = doGetObjectInfo();
             break;
@@ -523,6 +530,20 @@ MtpResponseCode MtpServer::doResetDevicePropValue() {
     return mDatabase->resetDeviceProperty(property);
 }
 
+MtpResponseCode MtpServer::doGetObjectPropList() {
+
+    MtpObjectHandle handle = mRequest.getParameter(1);
+    MtpObjectFormat format = mRequest.getParameter(2);
+    MtpDeviceProperty property = mRequest.getParameter(3);
+    int groupCode = mRequest.getParameter(4);
+    int depth = mRequest.getParameter(4);
+   LOGD("GetObjectPropList %d format: %s property: %s group: %d depth: %d\n",
+            handle, MtpDebug::getFormatCodeName(format),
+            MtpDebug::getObjectPropCodeName(property), groupCode, depth);
+
+    return mDatabase->getObjectPropertyList(handle, format, property, groupCode, depth, mData);
+}
+
 MtpResponseCode MtpServer::doGetObjectInfo() {
     MtpObjectHandle handle = mRequest.getParameter(1);
     return mDatabase->getObjectInfo(handle, mData);