MTP: Host support for GetObjectPropsSupported and GetObjectPropDesc

Change-Id: I6fd23587597fc68227dfb61118b097eda3e3e1d5
Signed-off-by: Mike Lockwood <lockwood@android.com>

2 files changed, 38 insertions, 0 deletions

diff --git a/media/mtp/MtpDevice.cpp b/media/mtp/MtpDevice.cpp
index 416ebfe..a4d29a7 100644
--- a/media/mtp/MtpDevice.cpp
+++ b/media/mtp/MtpDevice.cpp
@@ -330,6 +330,23 @@ MtpObjectHandle MtpDevice::getStorageID(MtpObjectHandle handle) {
         return -1;
 }
 
+MtpObjectPropertyList* MtpDevice::getObjectPropsSupported(MtpObjectFormat format) {
+    Mutex::Autolock autoLock(mMutex);
+
+    mRequest.reset();
+    mRequest.setParameter(1, format);
+    if (!sendRequest(MTP_OPERATION_GET_OBJECT_PROPS_SUPPORTED))
+        return NULL;
+    if (!readData())
+        return NULL;
+    MtpResponseCode ret = readResponse();
+    if (ret == MTP_RESPONSE_OK) {
+        return mData.getAUInt16();
+    }
+    return NULL;
+
+}
+
 MtpProperty* MtpDevice::getDevicePropDesc(MtpDeviceProperty code) {
     Mutex::Autolock autoLock(mMutex);
 
@@ -348,6 +365,24 @@ MtpProperty* MtpDevice::getDevicePropDesc(MtpDeviceProperty code) {
     return NULL;
 }
 
+MtpProperty* MtpDevice::getObjectPropDesc(MtpObjectProperty code) {
+    Mutex::Autolock autoLock(mMutex);
+
+    mRequest.reset();
+    mRequest.setParameter(1, code);
+    if (!sendRequest(MTP_OPERATION_GET_OBJECT_PROP_DESC))
+        return NULL;
+    if (!readData())
+        return NULL;
+    MtpResponseCode ret = readResponse();
+    if (ret == MTP_RESPONSE_OK) {
+        MtpProperty* property = new MtpProperty;
+        property->read(mData);
+        return property;
+    }
+    return NULL;
+}
+
 // reads the object's data and writes it to the specified file path
 bool MtpDevice::readObject(MtpObjectHandle handle, const char* destPath, int group, int perm) {
     LOGD("readObject: %s", destPath);
diff --git a/media/mtp/MtpDevice.h b/media/mtp/MtpDevice.h
index 21c85d5..6eba8c8 100644
--- a/media/mtp/MtpDevice.h
+++ b/media/mtp/MtpDevice.h
@@ -85,7 +85,10 @@ public:
     MtpObjectHandle         getParent(MtpObjectHandle handle);
     MtpObjectHandle         getStorageID(MtpObjectHandle handle);
 
+    MtpObjectPropertyList*  getObjectPropsSupported(MtpObjectFormat format);
+
     MtpProperty*            getDevicePropDesc(MtpDeviceProperty code);
+    MtpProperty*            getObjectPropDesc(MtpObjectProperty code);
 
     bool                   readObject(MtpObjectHandle handle, const char* destPath, int group,
                                     int perm);