MediaCodec: Add a method for getting the component name

If the codec was chosen based on mime type, the caller does
not know what component actually was chosen. This allows
getting essential information (such as supported color formats,
for a video encoder) for this component.

Change-Id: Ie471f40f8104b37d27ced3dba5a54facc6504b1b

1 files changed, 40 insertions, 4 deletions

diff --git a/media/libstagefright/MediaCodec.cpp b/media/libstagefright/MediaCodec.cpp
index 56e6df0..cb8a651 100644
--- a/media/libstagefright/MediaCodec.cpp
+++ b/media/libstagefright/MediaCodec.cpp
@@ -302,6 +302,20 @@ status_t MediaCodec::getOutputFormat(sp<AMessage> *format) const {
     return OK;
 }
 
+status_t MediaCodec::getName(AString *name) const {
+    sp<AMessage> msg = new AMessage(kWhatGetName, id());
+
+    sp<AMessage> response;
+    status_t err;
+    if ((err = PostAndAwaitResponse(msg, &response)) != OK) {
+        return err;
+    }
+
+    CHECK(response->findString("name", name));
+
+    return OK;
+}
+
 status_t MediaCodec::getInputBuffers(Vector<sp<ABuffer> > *buffers) const {
     sp<AMessage> msg = new AMessage(kWhatGetBuffers, id());
     msg->setInt32("portIndex", kPortIndexInput);
@@ -534,16 +548,15 @@ void MediaCodec::onMessageReceived(const sp<AMessage> &msg) {
                     CHECK_EQ(mState, INITIALIZING);
                     setState(INITIALIZED);
 
-                    AString componentName;
-                    CHECK(msg->findString("componentName", &componentName));
+                    CHECK(msg->findString("componentName", &mComponentName));
 
-                    if (componentName.startsWith("OMX.google.")) {
+                    if (mComponentName.startsWith("OMX.google.")) {
                         mFlags |= kFlagIsSoftwareCodec;
                     } else {
                         mFlags &= ~kFlagIsSoftwareCodec;
                     }
 
-                    if (componentName.endsWith(".secure")) {
+                    if (mComponentName.endsWith(".secure")) {
                         mFlags |= kFlagIsSecure;
                     } else {
                         mFlags &= ~kFlagIsSecure;
@@ -1171,6 +1184,25 @@ void MediaCodec::onMessageReceived(const sp<AMessage> &msg) {
             break;
         }
 
+        case kWhatGetName:
+        {
+            uint32_t replyID;
+            CHECK(msg->senderAwaitsResponse(&replyID));
+
+            if (mComponentName.empty()) {
+                sp<AMessage> response = new AMessage;
+                response->setInt32("err", INVALID_OPERATION);
+
+                response->postReply(replyID);
+                break;
+            }
+
+            sp<AMessage> response = new AMessage;
+            response->setString("name", mComponentName.c_str());
+            response->postReply(replyID);
+            break;
+        }
+
         default:
             TRESPASS();
     }
@@ -1240,6 +1272,10 @@ void MediaCodec::setState(State newState) {
         mActivityNotify.clear();
     }
 
+    if (newState == UNINITIALIZED) {
+        mComponentName.clear();
+    }
+
     mState = newState;
 
     cancelPendingDequeueOperations();