SoftOMXPlugin.cpp revision bbba88cb1bdc34705d1477208990a06904c022e7
1/* 2 * Copyright (C) 2011 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//#define LOG_NDEBUG 0 18#define LOG_TAG "SoftOMXPlugin" 19#include <utils/Log.h> 20 21#include "SoftOMXPlugin.h" 22#include "include/SoftOMXComponent.h" 23 24#include <media/stagefright/foundation/AString.h> 25 26#include <dlfcn.h> 27 28namespace android { 29 30static const struct { 31 const char *mName; 32 const char *mLibNameSuffix; 33 const char *mRole; 34 35} kComponents[] = { 36 { "OMX.google.aac.decoder", "aacdec", "audio_decoder.aac" }, 37 { "OMX.google.amrnb.decoder", "amrdec", "audio_decoder.amrnb" }, 38 { "OMX.google.amrwb.decoder", "amrdec", "audio_decoder.amrwb" }, 39 { "OMX.google.avc.decoder", "avcdec", "video_decoder.avc" }, 40 { "OMX.google.g711.alaw.decoder", "g711dec", "audio_decoder.g711alaw" }, 41 { "OMX.google.g711.mlaw.decoder", "g711dec", "audio_decoder.g711mlaw" }, 42 { "OMX.google.h263.decoder", "mpeg4dec", "video_decoder.h263" }, 43 { "OMX.google.mpeg4.decoder", "mpeg4dec", "video_decoder.mpeg4" }, 44 { "OMX.google.mp3.decoder", "mp3dec", "audio_decoder.mp3" }, 45 { "OMX.google.vorbis.decoder", "vorbisdec", "audio_decoder.vorbis" }, 46 { "OMX.google.vpx.decoder", "vpxdec", "video_decoder.vpx" }, 47}; 48 49static const size_t kNumComponents = 50 sizeof(kComponents) / sizeof(kComponents[0]); 51 52SoftOMXPlugin::SoftOMXPlugin() { 53} 54 55OMX_ERRORTYPE SoftOMXPlugin::makeComponentInstance( 56 const char *name, 57 const OMX_CALLBACKTYPE *callbacks, 58 OMX_PTR appData, 59 OMX_COMPONENTTYPE **component) { 60 LOGV("makeComponentInstance '%s'", name); 61 62 for (size_t i = 0; i < kNumComponents; ++i) { 63 if (strcmp(name, kComponents[i].mName)) { 64 continue; 65 } 66 67 AString libName = "libstagefright_soft_"; 68 libName.append(kComponents[i].mLibNameSuffix); 69 libName.append(".so"); 70 71 void *libHandle = dlopen(libName.c_str(), RTLD_NOW); 72 73 if (libHandle == NULL) { 74 LOGE("unable to dlopen %s", libName.c_str()); 75 76 return OMX_ErrorComponentNotFound; 77 } 78 79 typedef SoftOMXComponent *(*CreateSoftOMXComponentFunc)( 80 const char *, const OMX_CALLBACKTYPE *, 81 OMX_PTR, OMX_COMPONENTTYPE **); 82 83 CreateSoftOMXComponentFunc createSoftOMXComponent = 84 (CreateSoftOMXComponentFunc)dlsym( 85 libHandle, 86 "_Z22createSoftOMXComponentPKcPK16OMX_CALLBACKTYPE" 87 "PvPP17OMX_COMPONENTTYPE"); 88 89 if (createSoftOMXComponent == NULL) { 90 dlclose(libHandle); 91 libHandle = NULL; 92 93 return OMX_ErrorComponentNotFound; 94 } 95 96 sp<SoftOMXComponent> codec = 97 (*createSoftOMXComponent)(name, callbacks, appData, component); 98 99 if (codec == NULL) { 100 dlclose(libHandle); 101 libHandle = NULL; 102 103 return OMX_ErrorInsufficientResources; 104 } 105 106 OMX_ERRORTYPE err = codec->initCheck(); 107 if (err != OMX_ErrorNone) { 108 dlclose(libHandle); 109 libHandle = NULL; 110 111 return err; 112 } 113 114 codec->incStrong(this); 115 codec->setLibHandle(libHandle); 116 117 return OMX_ErrorNone; 118 } 119 120 return OMX_ErrorInvalidComponentName; 121} 122 123OMX_ERRORTYPE SoftOMXPlugin::destroyComponentInstance( 124 OMX_COMPONENTTYPE *component) { 125 SoftOMXComponent *me = 126 (SoftOMXComponent *) 127 ((OMX_COMPONENTTYPE *)component)->pComponentPrivate; 128 129 void *libHandle = me->libHandle(); 130 131 me->decStrong(this); 132 me = NULL; 133 134 dlclose(libHandle); 135 libHandle = NULL; 136 137 return OMX_ErrorNone; 138} 139 140OMX_ERRORTYPE SoftOMXPlugin::enumerateComponents( 141 OMX_STRING name, 142 size_t size, 143 OMX_U32 index) { 144 if (index >= kNumComponents) { 145 return OMX_ErrorNoMore; 146 } 147 148 strcpy(name, kComponents[index].mName); 149 150 return OMX_ErrorNone; 151} 152 153OMX_ERRORTYPE SoftOMXPlugin::getRolesOfComponent( 154 const char *name, 155 Vector<String8> *roles) { 156 for (size_t i = 0; i < kNumComponents; ++i) { 157 if (strcmp(name, kComponents[i].mName)) { 158 continue; 159 } 160 161 roles->clear(); 162 roles->push(String8(kComponents[i].mRole)); 163 164 return OMX_ErrorNone; 165 } 166 167 return OMX_ErrorInvalidComponentName; 168} 169 170} // namespace android 171