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/*
* Copyright 2012, 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.
*/
#ifndef MEDIA_CODEC_LIST_H_
#define MEDIA_CODEC_LIST_H_
#include <media/stagefright/foundation/ABase.h>
#include <media/stagefright/foundation/AString.h>
#include <media/IMediaCodecList.h>
#include <media/MediaCodecInfo.h>
#include <sys/types.h>
#include <utils/Errors.h>
#include <utils/KeyedVector.h>
#include <utils/Vector.h>
#include <utils/StrongPointer.h>
namespace android {
extern const char *kMaxEncoderInputBuffers;
struct AMessage;
struct MediaCodecListBuilderBase;
struct MediaCodecList : public BnMediaCodecList {
static sp<IMediaCodecList> getInstance();
virtual ssize_t findCodecByType(
const char *type, bool encoder, size_t startIndex = 0) const;
virtual ssize_t findCodecByName(const char *name) const;
virtual size_t countCodecs() const;
virtual sp<MediaCodecInfo> getCodecInfo(size_t index) const {
if (index >= mCodecInfos.size()) {
ALOGE("b/24445127");
return NULL;
}
return mCodecInfos[index];
}
virtual const sp<AMessage> getGlobalSettings() const;
// to be used by MediaPlayerService alone
static sp<IMediaCodecList> getLocalInstance();
// only to be used by getLocalInstance
static void *profilerThreadWrapper(void * /*arg*/);
enum Flags {
kPreferSoftwareCodecs = 1,
kHardwareCodecsOnly = 2,
};
static void findMatchingCodecs(
const char *mime,
bool createEncoder,
uint32_t flags,
Vector<AString> *matchingCodecs,
Vector<AString> *owners = nullptr);
static bool isSoftwareCodec(const AString &componentName);
private:
class BinderDeathObserver : public IBinder::DeathRecipient {
void binderDied(const wp<IBinder> &the_late_who __unused);
};
static sp<BinderDeathObserver> sBinderDeathObserver;
static sp<IMediaCodecList> sCodecList;
static sp<IMediaCodecList> sRemoteList;
status_t mInitCheck;
sp<AMessage> mGlobalSettings;
std::vector<sp<MediaCodecInfo> > mCodecInfos;
/**
* This constructor will call `buildMediaCodecList()` from the given
* `MediaCodecListBuilderBase` object.
*/
MediaCodecList(MediaCodecListBuilderBase* builder);
~MediaCodecList();
status_t initCheck() const;
MediaCodecList(const MediaCodecList&) = delete;
MediaCodecList& operator=(const MediaCodecList&) = delete;
friend MediaCodecListWriter;
};
/**
* This class is to be used by a `MediaCodecListBuilderBase` instance to add
* information to the associated `MediaCodecList` object.
*/
struct MediaCodecListWriter {
/**
* Add a key-value pair to a `MediaCodecList`'s global settings.
*
* @param key Key.
* @param value Value.
*/
void addGlobalSetting(const char* key, const char* value);
/**
* Create an add a new `MediaCodecInfo` object to a `MediaCodecList`, and
* return a `MediaCodecInfoWriter` object associated with the newly added
* `MediaCodecInfo`.
*
* @return The `MediaCodecInfoWriter` object associated with the newly
* added `MediaCodecInfo` object.
*/
std::unique_ptr<MediaCodecInfoWriter> addMediaCodecInfo();
private:
/**
* The associated `MediaCodecList` object.
*/
MediaCodecList* mList;
/**
* Construct this writer object associated with the given `MediaCodecList`
* object.
*
* @param list The "base" `MediaCodecList` object.
*/
MediaCodecListWriter(MediaCodecList* list);
friend MediaCodecList;
};
/**
* This interface is to be used by `MediaCodecList` to fill its members with
* appropriate information. `buildMediaCodecList()` will be called from a
* `MediaCodecList` object during its construction.
*/
struct MediaCodecListBuilderBase {
/**
* Build the `MediaCodecList` via the given `MediaCodecListWriter` interface.
*
* @param writer The writer interface.
* @return The status of the construction. `NO_ERROR` means success.
*/
virtual status_t buildMediaCodecList(MediaCodecListWriter* writer) = 0;
/**
* The default destructor does nothing.
*/
virtual ~MediaCodecListBuilderBase();
};
} // namespace android
#endif // MEDIA_CODEC_LIST_H_