stagefright: rework media codec list and infos
This is in preparation of serving the codec list and codec infos
from the mediaserver
Bug: 11990470
Change-Id: Ib8e2708679c9ce461a4ba179974a740cdcdf2731
diff --git a/media/libmedia/IMediaCodecList.cpp b/media/libmedia/IMediaCodecList.cpp
new file mode 100644
index 0000000..bf7c5ca
--- /dev/null
+++ b/media/libmedia/IMediaCodecList.cpp
@@ -0,0 +1,163 @@
+/*
+ * Copyright (C) 2014, 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 <binder/Parcel.h>
+#include <media/stagefright/MediaCodecList.h>
+#include <media/IMediaCodecList.h>
+#include <media/MediaCodecInfo.h>
+
+#include <utils/Errors.h> // for status_t
+
+namespace android {
+
+enum {
+ CREATE = IBinder::FIRST_CALL_TRANSACTION,
+ COUNT_CODECS,
+ GET_CODEC_INFO,
+ FIND_CODEC_BY_TYPE,
+ FIND_CODEC_BY_NAME,
+};
+
+class BpMediaCodecList: public BpInterface<IMediaCodecList>
+{
+public:
+ BpMediaCodecList(const sp<IBinder>& impl)
+ : BpInterface<IMediaCodecList>(impl)
+ {
+ }
+
+ virtual size_t countCodecs() const
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(IMediaCodecList::getInterfaceDescriptor());
+ remote()->transact(COUNT_CODECS, data, &reply);
+ return static_cast<size_t>(reply.readInt32());
+ }
+
+ virtual sp<MediaCodecInfo> getCodecInfo(size_t index) const
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(IMediaCodecList::getInterfaceDescriptor());
+ data.writeInt32(index);
+ remote()->transact(GET_CODEC_INFO, data, &reply);
+ status_t err = reply.readInt32();
+ if (err == OK) {
+ return MediaCodecInfo::FromParcel(reply);
+ } else {
+ return NULL;
+ }
+ }
+
+ virtual ssize_t findCodecByType(
+ const char *type, bool encoder, size_t startIndex = 0) const
+ {
+ if (startIndex > INT32_MAX) {
+ return NAME_NOT_FOUND;
+ }
+
+ Parcel data, reply;
+ data.writeInterfaceToken(IMediaCodecList::getInterfaceDescriptor());
+ data.writeCString(type);
+ data.writeInt32(encoder);
+ data.writeInt32(startIndex);
+ remote()->transact(FIND_CODEC_BY_TYPE, data, &reply);
+ return static_cast<ssize_t>(reply.readInt32());
+ }
+
+ virtual ssize_t findCodecByName(const char *name) const
+ {
+ Parcel data, reply;
+ data.writeInterfaceToken(IMediaCodecList::getInterfaceDescriptor());
+ data.writeCString(name);
+ remote()->transact(FIND_CODEC_BY_NAME, data, &reply);
+ return static_cast<ssize_t>(reply.readInt32());
+ }
+};
+
+IMPLEMENT_META_INTERFACE(MediaCodecList, "android.media.IMediaCodecList");
+
+// ----------------------------------------------------------------------
+
+status_t BnMediaCodecList::onTransact(
+ uint32_t code, const Parcel& data, Parcel* reply, uint32_t flags)
+{
+ switch (code) {
+ case COUNT_CODECS:
+ {
+ CHECK_INTERFACE(IMediaCodecList, data, reply);
+ size_t count = countCodecs();
+ if (count > INT32_MAX) {
+ count = INT32_MAX;
+ }
+ reply->writeInt32(count);
+ return NO_ERROR;
+ }
+ break;
+
+ case GET_CODEC_INFO:
+ {
+ CHECK_INTERFACE(IMediaCodecList, data, reply);
+ size_t index = static_cast<size_t>(data.readInt32());
+ const sp<MediaCodecInfo> info = getCodecInfo(index);
+ if (info != NULL) {
+ reply->writeInt32(OK);
+ info->writeToParcel(reply);
+ } else {
+ reply->writeInt32(-ERANGE);
+ }
+ return NO_ERROR;
+ }
+ break;
+
+ case FIND_CODEC_BY_TYPE:
+ {
+ CHECK_INTERFACE(IMediaCodecList, data, reply);
+ const char *type = data.readCString();
+ bool isEncoder = static_cast<bool>(data.readInt32());
+ size_t startIndex = static_cast<size_t>(data.readInt32());
+ ssize_t index = findCodecByType(type, isEncoder, startIndex);
+ if (index > INT32_MAX || index < 0) {
+ index = NAME_NOT_FOUND;
+ }
+ reply->writeInt32(index);
+ return NO_ERROR;
+ }
+ break;
+
+ case FIND_CODEC_BY_NAME:
+ {
+ CHECK_INTERFACE(IMediaCodecList, data, reply);
+ const char *name = data.readCString();
+ ssize_t index = findCodecByName(name);
+ if (index > INT32_MAX || index < 0) {
+ index = NAME_NOT_FOUND;
+ }
+ reply->writeInt32(index);
+ return NO_ERROR;
+ }
+ break;
+
+ default:
+ return BBinder::onTransact(code, data, reply, flags);
+ }
+}
+
+// ----------------------------------------------------------------------------
+
+}; // namespace android