1 /* 2 * Copyright 2012, The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef MEDIA_CODEC_LIST_H_ 18 19 #define MEDIA_CODEC_LIST_H_ 20 21 #include <media/stagefright/foundation/ABase.h> 22 #include <media/stagefright/foundation/AString.h> 23 #include <media/IMediaCodecList.h> 24 #include <media/IOMX.h> 25 #include <media/MediaCodecInfo.h> 26 27 #include <sys/types.h> 28 #include <utils/Errors.h> 29 #include <utils/KeyedVector.h> 30 #include <utils/Vector.h> 31 #include <utils/StrongPointer.h> 32 33 namespace android { 34 35 extern const char *kMaxEncoderInputBuffers; 36 37 struct AMessage; 38 39 struct MediaCodecList : public BnMediaCodecList { 40 static sp<IMediaCodecList> getInstance(); 41 42 virtual ssize_t findCodecByType( 43 const char *type, bool encoder, size_t startIndex = 0) const; 44 45 virtual ssize_t findCodecByName(const char *name) const; 46 47 virtual size_t countCodecs() const; 48 getCodecInfoMediaCodecList49 virtual sp<MediaCodecInfo> getCodecInfo(size_t index) const { 50 if (index >= mCodecInfos.size()) { 51 ALOGE("b/24445127"); 52 return NULL; 53 } 54 return mCodecInfos.itemAt(index); 55 } 56 57 virtual const sp<AMessage> getGlobalSettings() const; 58 59 // to be used by MediaPlayerService alone 60 static sp<IMediaCodecList> getLocalInstance(); 61 62 // only to be used by getLocalInstance 63 static void *profilerThreadWrapper(void * /*arg*/); 64 65 // only to be used by MediaPlayerService 66 void parseTopLevelXMLFile(const char *path, bool ignore_errors = false); 67 68 enum Flags { 69 kPreferSoftwareCodecs = 1, 70 kHardwareCodecsOnly = 2, 71 }; 72 73 static void findMatchingCodecs( 74 const char *mime, 75 bool createEncoder, 76 uint32_t flags, 77 Vector<AString> *matching); 78 79 static uint32_t getQuirksFor(const char *mComponentName); 80 81 static bool isSoftwareCodec(const AString &componentName); 82 83 84 private: 85 class BinderDeathObserver : public IBinder::DeathRecipient { 86 void binderDied(const wp<IBinder> &the_late_who __unused); 87 }; 88 89 static sp<BinderDeathObserver> sBinderDeathObserver; 90 91 enum Section { 92 SECTION_TOPLEVEL, 93 SECTION_SETTINGS, 94 SECTION_DECODERS, 95 SECTION_DECODER, 96 SECTION_DECODER_TYPE, 97 SECTION_ENCODERS, 98 SECTION_ENCODER, 99 SECTION_ENCODER_TYPE, 100 SECTION_INCLUDE, 101 }; 102 103 static sp<IMediaCodecList> sCodecList; 104 static sp<IMediaCodecList> sRemoteList; 105 106 status_t mInitCheck; 107 Section mCurrentSection; 108 bool mUpdate; 109 Vector<Section> mPastSections; 110 int32_t mDepth; 111 AString mHrefBase; 112 113 sp<AMessage> mGlobalSettings; 114 KeyedVector<AString, CodecSettings> mOverrides; 115 116 Vector<sp<MediaCodecInfo> > mCodecInfos; 117 sp<MediaCodecInfo> mCurrentInfo; 118 sp<IOMX> mOMX; 119 120 MediaCodecList(); 121 ~MediaCodecList(); 122 123 status_t initCheck() const; 124 void parseXMLFile(const char *path); 125 126 static void StartElementHandlerWrapper( 127 void *me, const char *name, const char **attrs); 128 129 static void EndElementHandlerWrapper(void *me, const char *name); 130 131 void startElementHandler(const char *name, const char **attrs); 132 void endElementHandler(const char *name); 133 134 status_t includeXMLFile(const char **attrs); 135 status_t addSettingFromAttributes(const char **attrs); 136 status_t addMediaCodecFromAttributes(bool encoder, const char **attrs); 137 void addMediaCodec(bool encoder, const char *name, const char *type = NULL); 138 139 void setCurrentCodecInfo(bool encoder, const char *name, const char *type); 140 141 status_t addQuirk(const char **attrs); 142 status_t addTypeFromAttributes(const char **attrs); 143 status_t addLimit(const char **attrs); 144 status_t addFeature(const char **attrs); 145 void addType(const char *name); 146 147 status_t initializeCapabilities(const char *type); 148 149 DISALLOW_EVIL_CONSTRUCTORS(MediaCodecList); 150 }; 151 152 } // namespace android 153 154 #endif // MEDIA_CODEC_LIST_H_ 155 156