Code drop from //branches/cupcake/...@124589

1 files changed, 218 insertions, 0 deletions

diff --git a/media/libmedia/IMediaMetadataRetriever.cpp b/media/libmedia/IMediaMetadataRetriever.cpp
new file mode 100644
index 0000000..615ae37
--- /dev/null
+++ b/media/libmedia/IMediaMetadataRetriever.cpp
@@ -0,0 +1,218 @@
+/*
+**
+** Copyright (C) 2008 The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+**     http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <stdint.h>
+#include <sys/types.h>
+#include <utils/Parcel.h>
+#include <graphics/SkBitmap.h>
+#include <media/IMediaMetadataRetriever.h>
+
+namespace android {
+
+enum {
+    DISCONNECT = IBinder::FIRST_CALL_TRANSACTION,
+    SET_DATA_SOURCE_URL,
+    SET_DATA_SOURCE_FD,
+    SET_MODE,
+    GET_MODE,
+    CAPTURE_FRAME,
+    EXTARCT_ALBUM_ART,
+    EXTRACT_METADATA,
+};
+
+class BpMediaMetadataRetriever: public BpInterface<IMediaMetadataRetriever>
+{
+public:
+    BpMediaMetadataRetriever(const sp<IBinder>& impl)
+        : BpInterface<IMediaMetadataRetriever>(impl)
+    {
+    }
+
+    // disconnect from media metadata retriever service
+    void disconnect()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+        remote()->transact(DISCONNECT, data, &reply);
+    }
+
+    status_t setDataSource(const char* srcUrl)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+        data.writeCString(srcUrl);
+        remote()->transact(SET_DATA_SOURCE_URL, data, &reply);
+        return reply.readInt32();
+    }
+
+    status_t setDataSource(int fd, int64_t offset, int64_t length)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+        data.writeFileDescriptor(fd);
+        data.writeInt64(offset);
+        data.writeInt64(length);
+        remote()->transact(SET_DATA_SOURCE_FD, data, &reply);
+        return reply.readInt32();
+    }
+
+    status_t setMode(int mode)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+        data.writeInt32(mode);
+        remote()->transact(SET_MODE, data, &reply);
+        return reply.readInt32();
+    }
+
+    status_t getMode(int* mode) const
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+        remote()->transact(GET_MODE, data, &reply);
+        *mode = reply.readInt32();
+        return reply.readInt32();
+    }
+
+    sp<IMemory> captureFrame()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+        remote()->transact(CAPTURE_FRAME, data, &reply);
+        status_t ret = reply.readInt32();
+        if (ret != NO_ERROR) {
+            return NULL;
+        }
+        return interface_cast<IMemory>(reply.readStrongBinder());
+    }
+
+    sp<IMemory> extractAlbumArt()
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+        remote()->transact(EXTARCT_ALBUM_ART, data, &reply);
+        status_t ret = reply.readInt32();
+        if (ret != NO_ERROR) {
+            return NULL;
+        }
+        return interface_cast<IMemory>(reply.readStrongBinder());
+    }
+
+    const char* extractMetadata(int keyCode)
+    {
+        Parcel data, reply;
+        data.writeInterfaceToken(IMediaMetadataRetriever::getInterfaceDescriptor());
+        data.writeInt32(keyCode);
+        remote()->transact(EXTRACT_METADATA, data, &reply);
+        status_t ret = reply.readInt32();
+        if (ret != NO_ERROR) {
+            return NULL;
+        }
+        return reply.readCString();
+    }
+};
+
+IMPLEMENT_META_INTERFACE(MediaMetadataRetriever, "android.hardware.IMediaMetadataRetriever");
+
+// ----------------------------------------------------------------------
+
+#define CHECK_INTERFACE(interface, data, reply) \
+        do { if (!data.enforceInterface(interface::getInterfaceDescriptor())) { \
+            LOGW("Call incorrectly routed to " #interface); \
+            return PERMISSION_DENIED; \
+        } } while (0)
+
+status_t BnMediaMetadataRetriever::onTransact(
+    uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+    switch (code) {
+        case DISCONNECT: {
+            CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+            disconnect();
+            return NO_ERROR;
+        } break;
+        case SET_DATA_SOURCE_URL: {
+            CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+            const char* srcUrl = data.readCString();
+            reply->writeInt32(setDataSource(srcUrl));
+            return NO_ERROR;
+        } break;
+        case SET_DATA_SOURCE_FD: {
+            CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+            int fd = dup(data.readFileDescriptor());
+            int64_t offset = data.readInt64();
+            int64_t length = data.readInt64();
+            reply->writeInt32(setDataSource(fd, offset, length));
+            return NO_ERROR;
+        } break;
+        case SET_MODE: {
+            CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+            int mode = data.readInt32();
+            reply->writeInt32(setMode(mode));
+            return NO_ERROR;
+        } break;
+        case GET_MODE: {
+            CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+            int mode;
+            status_t status = getMode(&mode);
+            reply->writeInt32(mode);
+            reply->writeInt32(status);
+            return NO_ERROR;
+        } break;
+        case CAPTURE_FRAME: {
+            CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+            sp<IMemory> bitmap = captureFrame();
+            if (bitmap != 0) {  // Don't send NULL across the binder interface
+                reply->writeInt32(NO_ERROR);
+                reply->writeStrongBinder(bitmap->asBinder());
+            } else {
+                reply->writeInt32(UNKNOWN_ERROR);
+            }
+            return NO_ERROR;
+        } break;
+        case EXTARCT_ALBUM_ART: {
+            CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+            sp<IMemory> albumArt = extractAlbumArt();
+            if (albumArt != 0) {  // Don't send NULL across the binder interface
+                reply->writeInt32(NO_ERROR);
+                reply->writeStrongBinder(albumArt->asBinder());
+            } else {
+                reply->writeInt32(UNKNOWN_ERROR);
+            }
+            return NO_ERROR;
+        } break;
+        case EXTRACT_METADATA: {
+            CHECK_INTERFACE(IMediaMetadataRetriever, data, reply);
+            int keyCode = data.readInt32();
+            const char* value = extractMetadata(keyCode);
+            if (value != NULL) {  // Don't send NULL across the binder interface
+                reply->writeInt32(NO_ERROR);
+                reply->writeCString(value);
+            } else {
+                reply->writeInt32(UNKNOWN_ERROR);
+            }
+            return NO_ERROR;
+        } break;
+        default:
+            return BBinder::onTransact(code, data, reply, flags);
+    }
+}
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android
+