SoftOMXPlugin.cpp revision 0c1bc742181ded4930842b46e9507372f0b1b963
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/ADebug.h> 25#include <media/stagefright/foundation/AString.h> 26 27#include <dlfcn.h> 28 29namespace android { 30 31static const struct { 32 const char *mName; 33 const char *mLibNameSuffix; 34 const char *mRole; 35 36} kComponents[] = { 37 { "OMX.google.aac.decoder", "aacdec", "audio_decoder.aac" }, 38 { "OMX.google.amrnb.decoder", "amrdec", "audio_decoder.amrnb" }, 39 { "OMX.google.amrwb.decoder", "amrdec", "audio_decoder.amrwb" }, 40 { "OMX.google.h264.decoder", "h264dec", "video_decoder.avc" }, 41 { "OMX.google.avc.decoder", "avcdec", "video_decoder.avc" }, 42 { "OMX.google.g711.alaw.decoder", "g711dec", "audio_decoder.g711alaw" }, 43 { "OMX.google.g711.mlaw.decoder", "g711dec", "audio_decoder.g711mlaw" }, 44 { "OMX.google.h263.decoder", "mpeg4dec", "video_decoder.h263" }, 45 { "OMX.google.mpeg4.decoder", "mpeg4dec", "video_decoder.mpeg4" }, 46 { "OMX.google.mp3.decoder", "mp3dec", "audio_decoder.mp3" }, 47 { "OMX.google.vorbis.decoder", "vorbisdec", "audio_decoder.vorbis" }, 48 { "OMX.google.vpx.decoder", "vpxdec", "video_decoder.vpx" }, 49}; 50 51static const size_t kNumComponents = 52 sizeof(kComponents) / sizeof(kComponents[0]); 53 54SoftOMXPlugin::SoftOMXPlugin() { 55} 56 57OMX_ERRORTYPE SoftOMXPlugin::makeComponentInstance( 58 const char *name, 59 const OMX_CALLBACKTYPE *callbacks, 60 OMX_PTR appData, 61 OMX_COMPONENTTYPE **component) { 62 LOGV("makeComponentInstance '%s'", name); 63 64 for (size_t i = 0; i < kNumComponents; ++i) { 65 if (strcmp(name, kComponents[i].mName)) { 66 continue; 67 } 68 69 AString libName = "libstagefright_soft_"; 70 libName.append(kComponents[i].mLibNameSuffix); 71 libName.append(".so"); 72 73 void *libHandle = dlopen(libName.c_str(), RTLD_NOW); 74 75 if (libHandle == NULL) { 76 LOGE("unable to dlopen %s", libName.c_str()); 77 78 return OMX_ErrorComponentNotFound; 79 } 80 81 typedef SoftOMXComponent *(*CreateSoftOMXComponentFunc)( 82 const char *, const OMX_CALLBACKTYPE *, 83 OMX_PTR, OMX_COMPONENTTYPE **); 84 85 CreateSoftOMXComponentFunc createSoftOMXComponent = 86 (CreateSoftOMXComponentFunc)dlsym( 87 libHandle, 88 "_Z22createSoftOMXComponentPKcPK16OMX_CALLBACKTYPE" 89 "PvPP17OMX_COMPONENTTYPE"); 90 91 if (createSoftOMXComponent == NULL) { 92 dlclose(libHandle); 93 libHandle = NULL; 94 95 return OMX_ErrorComponentNotFound; 96 } 97 98 sp<SoftOMXComponent> codec = 99 (*createSoftOMXComponent)(name, callbacks, appData, component); 100 101 if (codec == NULL) { 102 dlclose(libHandle); 103 libHandle = NULL; 104 105 return OMX_ErrorInsufficientResources; 106 } 107 108 OMX_ERRORTYPE err = codec->initCheck(); 109 if (err != OMX_ErrorNone) { 110 dlclose(libHandle); 111 libHandle = NULL; 112 113 return err; 114 } 115 116 codec->incStrong(this); 117 codec->setLibHandle(libHandle); 118 119 return OMX_ErrorNone; 120 } 121 122 return OMX_ErrorInvalidComponentName; 123} 124 125OMX_ERRORTYPE SoftOMXPlugin::destroyComponentInstance( 126 OMX_COMPONENTTYPE *component) { 127 SoftOMXComponent *me = 128 (SoftOMXComponent *) 129 ((OMX_COMPONENTTYPE *)component)->pComponentPrivate; 130 131 me->prepareForDestruction(); 132 133 void *libHandle = me->libHandle(); 134 135 CHECK_EQ(me->getStrongCount(), 1); 136 me->decStrong(this); 137 me = NULL; 138 139 dlclose(libHandle); 140 libHandle = NULL; 141 142 return OMX_ErrorNone; 143} 144 145OMX_ERRORTYPE SoftOMXPlugin::enumerateComponents( 146 OMX_STRING name, 147 size_t size, 148 OMX_U32 index) { 149 if (index >= kNumComponents) { 150 return OMX_ErrorNoMore; 151 } 152 153 strcpy(name, kComponents[index].mName); 154 155 return OMX_ErrorNone; 156} 157 158OMX_ERRORTYPE SoftOMXPlugin::getRolesOfComponent( 159 const char *name, 160 Vector<String8> *roles) { 161 for (size_t i = 0; i < kNumComponents; ++i) { 162 if (strcmp(name, kComponents[i].mName)) { 163 continue; 164 } 165 166 roles->clear(); 167 roles->push(String8(kComponents[i].mRole)); 168 169 return OMX_ErrorNone; 170 } 171 172 return OMX_ErrorInvalidComponentName; 173} 174 175} // namespace android 176