text: /*
   * 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/IOMX.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 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.itemAt(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*/);
  
      // only to be used by MediaPlayerService
      void parseTopLevelXMLFile(const char *path, bool ignore_errors = false);
  
      enum Flags {
          kPreferSoftwareCodecs   = 1,
          kHardwareCodecsOnly     = 2,
      };
  
      static void findMatchingCodecs(
              const char *mime,
              bool createEncoder,
              uint32_t flags,
              Vector<AString> *matching);
  
      static uint32_t getQuirksFor(const char *mComponentName);
  
      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;
  
      enum Section {
          SECTION_TOPLEVEL,
          SECTION_SETTINGS,
          SECTION_DECODERS,
          SECTION_DECODER,
          SECTION_DECODER_TYPE,
          SECTION_ENCODERS,
          SECTION_ENCODER,
          SECTION_ENCODER_TYPE,
          SECTION_INCLUDE,
      };
  
      static sp<IMediaCodecList> sCodecList;
      static sp<IMediaCodecList> sRemoteList;
  
      status_t mInitCheck;
      Section mCurrentSection;
      bool mUpdate;
      Vector<Section> mPastSections;
      int32_t mDepth;
      AString mHrefBase;
  
      sp<AMessage> mGlobalSettings;
      KeyedVector<AString, CodecSettings> mOverrides;
  
      Vector<sp<MediaCodecInfo> > mCodecInfos;
      sp<MediaCodecInfo> mCurrentInfo;
      sp<IOMX> mOMX;
  
      MediaCodecList();
      ~MediaCodecList();
  
      status_t initCheck() const;
      void parseXMLFile(const char *path);
  
      static void StartElementHandlerWrapper(
              void *me, const char *name, const char **attrs);
  
      static void EndElementHandlerWrapper(void *me, const char *name);
  
      void startElementHandler(const char *name, const char **attrs);
      void endElementHandler(const char *name);
  
      status_t includeXMLFile(const char **attrs);
      status_t addSettingFromAttributes(const char **attrs);
      status_t addMediaCodecFromAttributes(bool encoder, const char **attrs);
      void addMediaCodec(bool encoder, const char *name, const char *type = NULL);
  
      void setCurrentCodecInfo(bool encoder, const char *name, const char *type);
  
      status_t addQuirk(const char **attrs);
      status_t addTypeFromAttributes(const char **attrs);
      status_t addLimit(const char **attrs);
      status_t addFeature(const char **attrs);
      void addType(const char *name);
  
      status_t initializeCapabilities(const char *type);
  
      DISALLOW_EVIL_CONSTRUCTORS(MediaCodecList);
  };
  
  }  // namespace android
  
  #endif  // MEDIA_CODEC_LIST_H_
  
  