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Diffstat (limited to 'media/libmedia/IMediaCodecList.cpp')
-rw-r--r-- | media/libmedia/IMediaCodecList.cpp | 163 |
1 files changed, 163 insertions, 0 deletions
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 |