1 /* 2 * Copyright (C) 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 //#define LOG_NDEBUG 0 18 #define LOG_TAG "SoftGSM" 19 #include <utils/Log.h> 20 21 #include "SoftGSM.h" 22 23 #include <media/stagefright/foundation/ADebug.h> 24 #include <media/stagefright/MediaDefs.h> 25 26 namespace android { 27 28 template<class T> 29 static void InitOMXParams(T *params) { 30 params->nSize = sizeof(T); 31 params->nVersion.s.nVersionMajor = 1; 32 params->nVersion.s.nVersionMinor = 0; 33 params->nVersion.s.nRevision = 0; 34 params->nVersion.s.nStep = 0; 35 } 36 37 SoftGSM::SoftGSM( 38 const char *name, 39 const OMX_CALLBACKTYPE *callbacks, 40 OMX_PTR appData, 41 OMX_COMPONENTTYPE **component) 42 : SimpleSoftOMXComponent(name, callbacks, appData, component), 43 mSignalledError(false) { 44 45 CHECK(!strcmp(name, "OMX.google.gsm.decoder")); 46 47 mGsm = gsm_create(); 48 CHECK(mGsm); 49 int msopt = 1; 50 gsm_option(mGsm, GSM_OPT_WAV49, &msopt); 51 52 initPorts(); 53 } 54 55 SoftGSM::~SoftGSM() { 56 gsm_destroy(mGsm); 57 } 58 59 void SoftGSM::initPorts() { 60 OMX_PARAM_PORTDEFINITIONTYPE def; 61 InitOMXParams(&def); 62 63 def.nPortIndex = 0; 64 def.eDir = OMX_DirInput; 65 def.nBufferCountMin = kNumBuffers; 66 def.nBufferCountActual = def.nBufferCountMin; 67 def.nBufferSize = sizeof(gsm_frame); 68 def.bEnabled = OMX_TRUE; 69 def.bPopulated = OMX_FALSE; 70 def.eDomain = OMX_PortDomainAudio; 71 def.bBuffersContiguous = OMX_FALSE; 72 def.nBufferAlignment = 1; 73 74 def.format.audio.cMIMEType = 75 const_cast<char *>(MEDIA_MIMETYPE_AUDIO_MSGSM); 76 77 def.format.audio.pNativeRender = NULL; 78 def.format.audio.bFlagErrorConcealment = OMX_FALSE; 79 def.format.audio.eEncoding = OMX_AUDIO_CodingGSMFR; 80 81 addPort(def); 82 83 def.nPortIndex = 1; 84 def.eDir = OMX_DirOutput; 85 def.nBufferCountMin = kNumBuffers; 86 def.nBufferCountActual = def.nBufferCountMin; 87 def.nBufferSize = kMaxNumSamplesPerFrame * sizeof(int16_t); 88 def.bEnabled = OMX_TRUE; 89 def.bPopulated = OMX_FALSE; 90 def.eDomain = OMX_PortDomainAudio; 91 def.bBuffersContiguous = OMX_FALSE; 92 def.nBufferAlignment = 2; 93 94 def.format.audio.cMIMEType = const_cast<char *>("audio/raw"); 95 def.format.audio.pNativeRender = NULL; 96 def.format.audio.bFlagErrorConcealment = OMX_FALSE; 97 def.format.audio.eEncoding = OMX_AUDIO_CodingPCM; 98 99 addPort(def); 100 } 101 102 OMX_ERRORTYPE SoftGSM::internalGetParameter( 103 OMX_INDEXTYPE index, OMX_PTR params) { 104 switch (index) { 105 case OMX_IndexParamAudioPcm: 106 { 107 OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams = 108 (OMX_AUDIO_PARAM_PCMMODETYPE *)params; 109 110 if (pcmParams->nPortIndex > 1) { 111 return OMX_ErrorUndefined; 112 } 113 114 pcmParams->eNumData = OMX_NumericalDataSigned; 115 pcmParams->eEndian = OMX_EndianBig; 116 pcmParams->bInterleaved = OMX_TRUE; 117 pcmParams->nBitPerSample = 16; 118 pcmParams->ePCMMode = OMX_AUDIO_PCMModeLinear; 119 pcmParams->eChannelMapping[0] = OMX_AUDIO_ChannelLF; 120 pcmParams->eChannelMapping[1] = OMX_AUDIO_ChannelRF; 121 122 pcmParams->nChannels = 1; 123 pcmParams->nSamplingRate = 8000; 124 125 return OMX_ErrorNone; 126 } 127 128 default: 129 return SimpleSoftOMXComponent::internalGetParameter(index, params); 130 } 131 } 132 133 OMX_ERRORTYPE SoftGSM::internalSetParameter( 134 OMX_INDEXTYPE index, const OMX_PTR params) { 135 switch (index) { 136 case OMX_IndexParamAudioPcm: 137 { 138 OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams = 139 (OMX_AUDIO_PARAM_PCMMODETYPE *)params; 140 141 if (pcmParams->nPortIndex != 0 && pcmParams->nPortIndex != 1) { 142 return OMX_ErrorUndefined; 143 } 144 145 if (pcmParams->nChannels != 1) { 146 return OMX_ErrorUndefined; 147 } 148 149 if (pcmParams->nSamplingRate != 8000) { 150 return OMX_ErrorUndefined; 151 } 152 153 return OMX_ErrorNone; 154 } 155 156 case OMX_IndexParamStandardComponentRole: 157 { 158 const OMX_PARAM_COMPONENTROLETYPE *roleParams = 159 (const OMX_PARAM_COMPONENTROLETYPE *)params; 160 161 if (strncmp((const char *)roleParams->cRole, 162 "audio_decoder.gsm", 163 OMX_MAX_STRINGNAME_SIZE - 1)) { 164 return OMX_ErrorUndefined; 165 } 166 167 return OMX_ErrorNone; 168 } 169 170 default: 171 return SimpleSoftOMXComponent::internalSetParameter(index, params); 172 } 173 } 174 175 void SoftGSM::onQueueFilled(OMX_U32 /* portIndex */) { 176 if (mSignalledError) { 177 return; 178 } 179 180 List<BufferInfo *> &inQueue = getPortQueue(0); 181 List<BufferInfo *> &outQueue = getPortQueue(1); 182 183 while (!inQueue.empty() && !outQueue.empty()) { 184 BufferInfo *inInfo = *inQueue.begin(); 185 OMX_BUFFERHEADERTYPE *inHeader = inInfo->mHeader; 186 187 BufferInfo *outInfo = *outQueue.begin(); 188 OMX_BUFFERHEADERTYPE *outHeader = outInfo->mHeader; 189 190 if (inHeader->nFlags & OMX_BUFFERFLAG_EOS) { 191 inQueue.erase(inQueue.begin()); 192 inInfo->mOwnedByUs = false; 193 notifyEmptyBufferDone(inHeader); 194 195 outHeader->nFilledLen = 0; 196 outHeader->nFlags = OMX_BUFFERFLAG_EOS; 197 198 outQueue.erase(outQueue.begin()); 199 outInfo->mOwnedByUs = false; 200 notifyFillBufferDone(outHeader); 201 return; 202 } 203 204 if (inHeader->nFilledLen > kMaxNumSamplesPerFrame) { 205 ALOGE("input buffer too large (%d).", inHeader->nFilledLen); 206 notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL); 207 mSignalledError = true; 208 } 209 210 if(((inHeader->nFilledLen / 65) * 65) != inHeader->nFilledLen) { 211 ALOGE("input buffer not multiple of 65 (%d).", inHeader->nFilledLen); 212 notify(OMX_EventError, OMX_ErrorUndefined, 0, NULL); 213 mSignalledError = true; 214 } 215 216 uint8_t *inputptr = inHeader->pBuffer + inHeader->nOffset; 217 218 int n = mSignalledError ? 0 : DecodeGSM(mGsm, 219 reinterpret_cast<int16_t *>(outHeader->pBuffer), inputptr, inHeader->nFilledLen); 220 221 outHeader->nTimeStamp = inHeader->nTimeStamp; 222 outHeader->nOffset = 0; 223 outHeader->nFilledLen = n * sizeof(int16_t); 224 outHeader->nFlags = 0; 225 226 inInfo->mOwnedByUs = false; 227 inQueue.erase(inQueue.begin()); 228 inInfo = NULL; 229 notifyEmptyBufferDone(inHeader); 230 inHeader = NULL; 231 232 outInfo->mOwnedByUs = false; 233 outQueue.erase(outQueue.begin()); 234 outInfo = NULL; 235 notifyFillBufferDone(outHeader); 236 outHeader = NULL; 237 } 238 } 239 240 241 // static 242 int SoftGSM::DecodeGSM(gsm handle, 243 int16_t *out, uint8_t *in, size_t inSize) { 244 245 int ret = 0; 246 while (inSize > 0) { 247 gsm_decode(handle, in, out); 248 in += 33; 249 inSize -= 33; 250 out += 160; 251 ret += 160; 252 gsm_decode(handle, in, out); 253 in += 32; 254 inSize -= 32; 255 out += 160; 256 ret += 160; 257 } 258 return ret; 259 } 260 261 262 } // namespace android 263 264 android::SoftOMXComponent *createSoftOMXComponent( 265 const char *name, const OMX_CALLBACKTYPE *callbacks, 266 OMX_PTR appData, OMX_COMPONENTTYPE **component) { 267 return new android::SoftGSM(name, callbacks, appData, component); 268 } 269 270
