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 <media/stagefright/omx/SoftOMXPlugin.h> 22#include <media/stagefright/omx/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 // two choices for aac decoding. 38 // configurable in media/libstagefright/data/media_codecs_google_audio.xml 39 // default implementation 40 { "OMX.google.aac.decoder", "aacdec", "audio_decoder.aac" }, 41 // alternate implementation 42 { "OMX.google.xaac.decoder", "xaacdec", "audio_decoder.aac" }, 43 { "OMX.google.aac.encoder", "aacenc", "audio_encoder.aac" }, 44 { "OMX.google.amrnb.decoder", "amrdec", "audio_decoder.amrnb" }, 45 { "OMX.google.amrnb.encoder", "amrnbenc", "audio_encoder.amrnb" }, 46 { "OMX.google.amrwb.decoder", "amrdec", "audio_decoder.amrwb" }, 47 { "OMX.google.amrwb.encoder", "amrwbenc", "audio_encoder.amrwb" }, 48 { "OMX.google.h264.decoder", "avcdec", "video_decoder.avc" }, 49 { "OMX.google.h264.encoder", "avcenc", "video_encoder.avc" }, 50 { "OMX.google.hevc.decoder", "hevcdec", "video_decoder.hevc" }, 51 { "OMX.google.g711.alaw.decoder", "g711dec", "audio_decoder.g711alaw" }, 52 { "OMX.google.g711.mlaw.decoder", "g711dec", "audio_decoder.g711mlaw" }, 53 { "OMX.google.mpeg2.decoder", "mpeg2dec", "video_decoder.mpeg2" }, 54 { "OMX.google.h263.decoder", "mpeg4dec", "video_decoder.h263" }, 55 { "OMX.google.h263.encoder", "mpeg4enc", "video_encoder.h263" }, 56 { "OMX.google.mpeg4.decoder", "mpeg4dec", "video_decoder.mpeg4" }, 57 { "OMX.google.mpeg4.encoder", "mpeg4enc", "video_encoder.mpeg4" }, 58 { "OMX.google.mp3.decoder", "mp3dec", "audio_decoder.mp3" }, 59 { "OMX.google.vorbis.decoder", "vorbisdec", "audio_decoder.vorbis" }, 60 { "OMX.google.opus.decoder", "opusdec", "audio_decoder.opus" }, 61 { "OMX.google.vp8.decoder", "vpxdec", "video_decoder.vp8" }, 62 { "OMX.google.vp9.decoder", "vpxdec", "video_decoder.vp9" }, 63 { "OMX.google.vp8.encoder", "vpxenc", "video_encoder.vp8" }, 64 { "OMX.google.vp9.encoder", "vpxenc", "video_encoder.vp9" }, 65 { "OMX.google.raw.decoder", "rawdec", "audio_decoder.raw" }, 66 { "OMX.google.flac.decoder", "flacdec", "audio_decoder.flac" }, 67 { "OMX.google.flac.encoder", "flacenc", "audio_encoder.flac" }, 68 { "OMX.google.gsm.decoder", "gsmdec", "audio_decoder.gsm" }, 69}; 70 71static const size_t kNumComponents = 72 sizeof(kComponents) / sizeof(kComponents[0]); 73 74SoftOMXPlugin::SoftOMXPlugin() { 75} 76 77OMX_ERRORTYPE SoftOMXPlugin::makeComponentInstance( 78 const char *name, 79 const OMX_CALLBACKTYPE *callbacks, 80 OMX_PTR appData, 81 OMX_COMPONENTTYPE **component) { 82 ALOGV("makeComponentInstance '%s'", name); 83 84 for (size_t i = 0; i < kNumComponents; ++i) { 85 if (strcmp(name, kComponents[i].mName)) { 86 continue; 87 } 88 89 AString libName = "libstagefright_soft_"; 90 libName.append(kComponents[i].mLibNameSuffix); 91 libName.append(".so"); 92 93 // RTLD_NODELETE means we keep the shared library around forever. 94 // this eliminates thrashing during sequences like loading soundpools. 95 // It also leaves the rest of the logic around the dlopen()/dlclose() 96 // calls in this file unchanged. 97 // 98 // Implications of the change: 99 // -- the codec process (where this happens) will have a slightly larger 100 // long-term memory footprint as it accumulates the loaded shared libraries. 101 // This is expected to be a small amount of memory. 102 // -- plugin codecs can no longer (and never should have) depend on a 103 // free reset of any static data as the library would have crossed 104 // a dlclose/dlopen cycle. 105 // 106 107 void *libHandle = dlopen(libName.c_str(), RTLD_NOW|RTLD_NODELETE); 108 109 if (libHandle == NULL) { 110 ALOGE("unable to dlopen %s: %s", libName.c_str(), dlerror()); 111 112 return OMX_ErrorComponentNotFound; 113 } 114 115 typedef SoftOMXComponent *(*CreateSoftOMXComponentFunc)( 116 const char *, const OMX_CALLBACKTYPE *, 117 OMX_PTR, OMX_COMPONENTTYPE **); 118 119 CreateSoftOMXComponentFunc createSoftOMXComponent = 120 (CreateSoftOMXComponentFunc)dlsym( 121 libHandle, 122 "_Z22createSoftOMXComponentPKcPK16OMX_CALLBACKTYPE" 123 "PvPP17OMX_COMPONENTTYPE"); 124 125 if (createSoftOMXComponent == NULL) { 126 dlclose(libHandle); 127 libHandle = NULL; 128 129 return OMX_ErrorComponentNotFound; 130 } 131 132 sp<SoftOMXComponent> codec = 133 (*createSoftOMXComponent)(name, callbacks, appData, component); 134 135 if (codec == NULL) { 136 dlclose(libHandle); 137 libHandle = NULL; 138 139 return OMX_ErrorInsufficientResources; 140 } 141 142 OMX_ERRORTYPE err = codec->initCheck(); 143 if (err != OMX_ErrorNone) { 144 dlclose(libHandle); 145 libHandle = NULL; 146 147 return err; 148 } 149 150 codec->incStrong(this); 151 codec->setLibHandle(libHandle); 152 153 return OMX_ErrorNone; 154 } 155 156 return OMX_ErrorInvalidComponentName; 157} 158 159OMX_ERRORTYPE SoftOMXPlugin::destroyComponentInstance( 160 OMX_COMPONENTTYPE *component) { 161 SoftOMXComponent *me = 162 (SoftOMXComponent *) 163 ((OMX_COMPONENTTYPE *)component)->pComponentPrivate; 164 165 me->prepareForDestruction(); 166 167 void *libHandle = me->libHandle(); 168 169 CHECK_EQ(me->getStrongCount(), 1); 170 me->decStrong(this); 171 me = NULL; 172 173 dlclose(libHandle); 174 libHandle = NULL; 175 176 return OMX_ErrorNone; 177} 178 179OMX_ERRORTYPE SoftOMXPlugin::enumerateComponents( 180 OMX_STRING name, 181 size_t /* size */, 182 OMX_U32 index) { 183 if (index >= kNumComponents) { 184 return OMX_ErrorNoMore; 185 } 186 187 strcpy(name, kComponents[index].mName); 188 189 return OMX_ErrorNone; 190} 191 192OMX_ERRORTYPE SoftOMXPlugin::getRolesOfComponent( 193 const char *name, 194 Vector<String8> *roles) { 195 for (size_t i = 0; i < kNumComponents; ++i) { 196 if (strcmp(name, kComponents[i].mName)) { 197 continue; 198 } 199 200 roles->clear(); 201 roles->push(String8(kComponents[i].mRole)); 202 203 return OMX_ErrorNone; 204 } 205 206 return OMX_ErrorInvalidComponentName; 207} 208 209} // namespace android 210