SoftAAC2.cpp revision 441fbdea6e46ddc6b99fa864ab1edaa9759ec033
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_TAG "SoftAAC2" 18#include <utils/Log.h> 19 20#include "SoftAAC2.h" 21 22#include <media/stagefright/foundation/ADebug.h> 23#include <media/stagefright/foundation/hexdump.h> 24 25#define FILEREAD_MAX_LAYERS 2 26 27namespace android { 28 29template<class T> 30static void InitOMXParams(T *params) { 31 params->nSize = sizeof(T); 32 params->nVersion.s.nVersionMajor = 1; 33 params->nVersion.s.nVersionMinor = 0; 34 params->nVersion.s.nRevision = 0; 35 params->nVersion.s.nStep = 0; 36} 37 38SoftAAC2::SoftAAC2( 39 const char *name, 40 const OMX_CALLBACKTYPE *callbacks, 41 OMX_PTR appData, 42 OMX_COMPONENTTYPE **component) 43 : SimpleSoftOMXComponent(name, callbacks, appData, component), 44 mAACDecoder(NULL), 45 mStreamInfo(NULL), 46 mIsADTS(false), 47 mInputBufferCount(0), 48 mSignalledError(false), 49 mAnchorTimeUs(0), 50 mNumSamplesOutput(0), 51 mOutputPortSettingsChange(NONE) { 52 initPorts(); 53 CHECK_EQ(initDecoder(), (status_t)OK); 54} 55 56SoftAAC2::~SoftAAC2() { 57 aacDecoder_Close(mAACDecoder); 58} 59 60void SoftAAC2::initPorts() { 61 OMX_PARAM_PORTDEFINITIONTYPE def; 62 InitOMXParams(&def); 63 64 def.nPortIndex = 0; 65 def.eDir = OMX_DirInput; 66 def.nBufferCountMin = kNumInputBuffers; 67 def.nBufferCountActual = def.nBufferCountMin; 68 def.nBufferSize = 8192; 69 def.bEnabled = OMX_TRUE; 70 def.bPopulated = OMX_FALSE; 71 def.eDomain = OMX_PortDomainAudio; 72 def.bBuffersContiguous = OMX_FALSE; 73 def.nBufferAlignment = 1; 74 75 def.format.audio.cMIMEType = const_cast<char *>("audio/aac"); 76 def.format.audio.pNativeRender = NULL; 77 def.format.audio.bFlagErrorConcealment = OMX_FALSE; 78 def.format.audio.eEncoding = OMX_AUDIO_CodingAAC; 79 80 addPort(def); 81 82 def.nPortIndex = 1; 83 def.eDir = OMX_DirOutput; 84 def.nBufferCountMin = kNumOutputBuffers; 85 def.nBufferCountActual = def.nBufferCountMin; 86 def.nBufferSize = 8192 * 2; 87 def.bEnabled = OMX_TRUE; 88 def.bPopulated = OMX_FALSE; 89 def.eDomain = OMX_PortDomainAudio; 90 def.bBuffersContiguous = OMX_FALSE; 91 def.nBufferAlignment = 2; 92 93 def.format.audio.cMIMEType = const_cast<char *>("audio/raw"); 94 def.format.audio.pNativeRender = NULL; 95 def.format.audio.bFlagErrorConcealment = OMX_FALSE; 96 def.format.audio.eEncoding = OMX_AUDIO_CodingPCM; 97 98 addPort(def); 99} 100 101status_t SoftAAC2::initDecoder() { 102 status_t status = UNKNOWN_ERROR; 103 mAACDecoder = aacDecoder_Open(TT_MP4_ADIF, /* num layers */ 1); 104 if (mAACDecoder != NULL) { 105 mStreamInfo = aacDecoder_GetStreamInfo(mAACDecoder); 106 if (mStreamInfo != NULL) { 107 status = OK; 108 } 109 } 110 mIsFirst = true; 111 return status; 112} 113 114OMX_ERRORTYPE SoftAAC2::internalGetParameter( 115 OMX_INDEXTYPE index, OMX_PTR params) { 116 switch (index) { 117 case OMX_IndexParamAudioAac: 118 { 119 OMX_AUDIO_PARAM_AACPROFILETYPE *aacParams = 120 (OMX_AUDIO_PARAM_AACPROFILETYPE *)params; 121 122 if (aacParams->nPortIndex != 0) { 123 return OMX_ErrorUndefined; 124 } 125 126 aacParams->nBitRate = 0; 127 aacParams->nAudioBandWidth = 0; 128 aacParams->nAACtools = 0; 129 aacParams->nAACERtools = 0; 130 aacParams->eAACProfile = OMX_AUDIO_AACObjectMain; 131 132 aacParams->eAACStreamFormat = 133 mIsADTS 134 ? OMX_AUDIO_AACStreamFormatMP4ADTS 135 : OMX_AUDIO_AACStreamFormatMP4FF; 136 137 aacParams->eChannelMode = OMX_AUDIO_ChannelModeStereo; 138 139 if (!isConfigured() || !mStreamInfo->numChannels || !mStreamInfo->sampleRate) { 140 aacParams->nChannels = 1; 141 aacParams->nSampleRate = 44100; 142 aacParams->nFrameLength = 0; 143 } else { 144 aacParams->nChannels = mStreamInfo->numChannels; 145 aacParams->nSampleRate = mStreamInfo->sampleRate; 146 aacParams->nFrameLength = mStreamInfo->frameSize; 147 } 148 149 return OMX_ErrorNone; 150 } 151 152 case OMX_IndexParamAudioPcm: 153 { 154 OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams = 155 (OMX_AUDIO_PARAM_PCMMODETYPE *)params; 156 157 if (pcmParams->nPortIndex != 1) { 158 return OMX_ErrorUndefined; 159 } 160 161 pcmParams->eNumData = OMX_NumericalDataSigned; 162 pcmParams->eEndian = OMX_EndianBig; 163 pcmParams->bInterleaved = OMX_TRUE; 164 pcmParams->nBitPerSample = 16; 165 pcmParams->ePCMMode = OMX_AUDIO_PCMModeLinear; 166 pcmParams->eChannelMapping[0] = OMX_AUDIO_ChannelLF; 167 pcmParams->eChannelMapping[1] = OMX_AUDIO_ChannelRF; 168 pcmParams->eChannelMapping[2] = OMX_AUDIO_ChannelCF; 169 pcmParams->eChannelMapping[3] = OMX_AUDIO_ChannelLFE; 170 pcmParams->eChannelMapping[4] = OMX_AUDIO_ChannelLS; 171 pcmParams->eChannelMapping[5] = OMX_AUDIO_ChannelRS; 172 173 if (!isConfigured() || !mStreamInfo->numChannels || !mStreamInfo->sampleRate) { 174 pcmParams->nChannels = 1; 175 pcmParams->nSamplingRate = 44100; 176 } else { 177 pcmParams->nChannels = mStreamInfo->numChannels; 178 pcmParams->nSamplingRate = mStreamInfo->sampleRate; 179 } 180 181 return OMX_ErrorNone; 182 } 183 184 default: 185 return SimpleSoftOMXComponent::internalGetParameter(index, params); 186 } 187 188} 189 190OMX_ERRORTYPE SoftAAC2::internalSetParameter( 191 OMX_INDEXTYPE index, const OMX_PTR params) { 192 switch (index) { 193 case OMX_IndexParamStandardComponentRole: 194 { 195 const OMX_PARAM_COMPONENTROLETYPE *roleParams = 196 (const OMX_PARAM_COMPONENTROLETYPE *)params; 197 198 if (strncmp((const char *)roleParams->cRole, 199 "audio_decoder.aac", 200 OMX_MAX_STRINGNAME_SIZE - 1)) { 201 return OMX_ErrorUndefined; 202 } 203 204 return OMX_ErrorNone; 205 } 206 207 case OMX_IndexParamAudioAac: 208 { 209 const OMX_AUDIO_PARAM_AACPROFILETYPE *aacParams = 210 (const OMX_AUDIO_PARAM_AACPROFILETYPE *)params; 211 212 if (aacParams->nPortIndex != 0) { 213 return OMX_ErrorUndefined; 214 } 215 216 if (aacParams->eAACStreamFormat == OMX_AUDIO_AACStreamFormatMP4FF) { 217 mIsADTS = false; 218 } else if (aacParams->eAACStreamFormat 219 == OMX_AUDIO_AACStreamFormatMP4ADTS) { 220 mIsADTS = true; 221 } else { 222 return OMX_ErrorUndefined; 223 } 224 225 return OMX_ErrorNone; 226 } 227 228 case OMX_IndexParamAudioPcm: 229 { 230 const OMX_AUDIO_PARAM_PCMMODETYPE *pcmParams = 231 (OMX_AUDIO_PARAM_PCMMODETYPE *)params; 232 233 if (pcmParams->nPortIndex != 1) { 234 return OMX_ErrorUndefined; 235 } 236 237 return OMX_ErrorNone; 238 } 239 240 default: 241 return SimpleSoftOMXComponent::internalSetParameter(index, params); 242 } 243} 244 245bool SoftAAC2::isConfigured() const { 246 return mInputBufferCount > 0; 247} 248 249void SoftAAC2::onQueueFilled(OMX_U32 portIndex) { 250 if (mSignalledError || mOutputPortSettingsChange != NONE) { 251 return; 252 } 253 254 UCHAR* inBuffer[FILEREAD_MAX_LAYERS]; 255 UINT inBufferLength[FILEREAD_MAX_LAYERS] = {0}; 256 UINT bytesValid[FILEREAD_MAX_LAYERS] = {0}; 257 258 List<BufferInfo *> &inQueue = getPortQueue(0); 259 List<BufferInfo *> &outQueue = getPortQueue(1); 260 261 if (portIndex == 0 && mInputBufferCount == 0) { 262 ++mInputBufferCount; 263 BufferInfo *info = *inQueue.begin(); 264 OMX_BUFFERHEADERTYPE *header = info->mHeader; 265 266 inBuffer[0] = header->pBuffer + header->nOffset; 267 inBufferLength[0] = header->nFilledLen; 268 269 AAC_DECODER_ERROR decoderErr = 270 aacDecoder_ConfigRaw(mAACDecoder, 271 inBuffer, 272 inBufferLength); 273 274 if (decoderErr != AAC_DEC_OK) { 275 mSignalledError = true; 276 notify(OMX_EventError, OMX_ErrorUndefined, decoderErr, NULL); 277 return; 278 } 279 inQueue.erase(inQueue.begin()); 280 info->mOwnedByUs = false; 281 notifyEmptyBufferDone(header); 282 283 notify(OMX_EventPortSettingsChanged, 1, 0, NULL); 284 mOutputPortSettingsChange = AWAITING_DISABLED; 285 return; 286 } 287 288 while (!inQueue.empty() && !outQueue.empty()) { 289 BufferInfo *inInfo = *inQueue.begin(); 290 OMX_BUFFERHEADERTYPE *inHeader = inInfo->mHeader; 291 292 BufferInfo *outInfo = *outQueue.begin(); 293 OMX_BUFFERHEADERTYPE *outHeader = outInfo->mHeader; 294 295 if (inHeader->nFlags & OMX_BUFFERFLAG_EOS) { 296 inQueue.erase(inQueue.begin()); 297 inInfo->mOwnedByUs = false; 298 notifyEmptyBufferDone(inHeader); 299 300 // flush out the decoder's delayed data by calling DecodeFrame one more time, with 301 // the AACDEC_FLUSH flag set 302 INT_PCM *outBuffer = 303 reinterpret_cast<INT_PCM *>(outHeader->pBuffer + outHeader->nOffset); 304 AAC_DECODER_ERROR decoderErr = aacDecoder_DecodeFrame(mAACDecoder, 305 outBuffer, 306 outHeader->nAllocLen, 307 AACDEC_FLUSH); 308 if (decoderErr != AAC_DEC_OK) { 309 mSignalledError = true; 310 notify(OMX_EventError, OMX_ErrorUndefined, decoderErr, NULL); 311 return; 312 } 313 314 outHeader->nFilledLen = 315 mStreamInfo->frameSize * sizeof(int16_t) * mStreamInfo->numChannels; 316 outHeader->nFlags = OMX_BUFFERFLAG_EOS; 317 318 outQueue.erase(outQueue.begin()); 319 outInfo->mOwnedByUs = false; 320 notifyFillBufferDone(outHeader); 321 return; 322 } 323 324 if (inHeader->nOffset == 0) { 325 mAnchorTimeUs = inHeader->nTimeStamp; 326 mNumSamplesOutput = 0; 327 } 328 329 size_t adtsHeaderSize = 0; 330 if (mIsADTS) { 331 // skip 30 bits, aac_frame_length follows. 332 // ssssssss ssssiiip ppffffPc ccohCCll llllllll lll????? 333 334 const uint8_t *adtsHeader = inHeader->pBuffer + inHeader->nOffset; 335 336 CHECK_GE(inHeader->nFilledLen, 7); 337 338 bool protectionAbsent = (adtsHeader[1] & 1); 339 340 unsigned aac_frame_length = 341 ((adtsHeader[3] & 3) << 11) 342 | (adtsHeader[4] << 3) 343 | (adtsHeader[5] >> 5); 344 345 CHECK_GE(inHeader->nFilledLen, aac_frame_length); 346 347 adtsHeaderSize = (protectionAbsent ? 7 : 9); 348 349 inBuffer[0] = (UCHAR *)adtsHeader + adtsHeaderSize; 350 inBufferLength[0] = aac_frame_length - adtsHeaderSize; 351 352 inHeader->nOffset += adtsHeaderSize; 353 inHeader->nFilledLen -= adtsHeaderSize; 354 } else { 355 inBuffer[0] = inHeader->pBuffer + inHeader->nOffset; 356 inBufferLength[0] = inHeader->nFilledLen; 357 } 358 359 // Fill and decode 360 INT_PCM *outBuffer = reinterpret_cast<INT_PCM *>(outHeader->pBuffer + outHeader->nOffset); 361 bytesValid[0] = inBufferLength[0]; 362 363 int prevSampleRate = mStreamInfo->sampleRate; 364 int prevNumChannels = mStreamInfo->numChannels; 365 366 AAC_DECODER_ERROR decoderErr = AAC_DEC_NOT_ENOUGH_BITS; 367 while (bytesValid[0] > 0 && decoderErr == AAC_DEC_NOT_ENOUGH_BITS) { 368 aacDecoder_Fill(mAACDecoder, 369 inBuffer, 370 inBufferLength, 371 bytesValid); 372 373 decoderErr = aacDecoder_DecodeFrame(mAACDecoder, 374 outBuffer, 375 outHeader->nAllocLen, 376 0 /* flags */); 377 378 } 379 380 // Check if stream info has changed 381 if (mStreamInfo->sampleRate != prevSampleRate || 382 mStreamInfo->numChannels != prevNumChannels) { 383 ALOGI("Reconfiguring decoder: %d Hz, %d channels", 384 mStreamInfo->sampleRate, 385 mStreamInfo->numChannels); 386 387 // We're going to want to revisit this input buffer, but 388 // may have already advanced the offset. Undo that if 389 // necessary. 390 inHeader->nOffset -= adtsHeaderSize; 391 inHeader->nFilledLen += adtsHeaderSize; 392 393 notify(OMX_EventPortSettingsChanged, 1, 0, NULL); 394 mOutputPortSettingsChange = AWAITING_DISABLED; 395 return; 396 } 397 398 size_t numOutBytes = 399 mStreamInfo->frameSize * sizeof(int16_t) * mStreamInfo->numChannels; 400 401 if (decoderErr == AAC_DEC_OK) { 402 UINT inBufferUsedLength = inBufferLength[0] - bytesValid[0]; 403 inHeader->nFilledLen -= inBufferUsedLength; 404 inHeader->nOffset += inBufferUsedLength; 405 } else { 406 ALOGW("AAC decoder returned error %d, substituting silence", 407 decoderErr); 408 409 memset(outHeader->pBuffer + outHeader->nOffset, 0, numOutBytes); 410 411 // Discard input buffer. 412 inHeader->nFilledLen = 0; 413 414 aacDecoder_SetParam(mAACDecoder, AAC_TPDEC_CLEAR_BUFFER, 1); 415 416 // fall through 417 } 418 419 if (decoderErr == AAC_DEC_OK || mNumSamplesOutput > 0) { 420 // We'll only output data if we successfully decoded it or 421 // we've previously decoded valid data, in the latter case 422 // (decode failed) we'll output a silent frame. 423 if (mIsFirst) { 424 mIsFirst = false; 425 // the first decoded frame should be discarded to account for decoder delay 426 numOutBytes = 0; 427 } 428 429 outHeader->nFilledLen = numOutBytes; 430 outHeader->nFlags = 0; 431 432 outHeader->nTimeStamp = 433 mAnchorTimeUs 434 + (mNumSamplesOutput * 1000000ll) / mStreamInfo->sampleRate; 435 436 mNumSamplesOutput += mStreamInfo->frameSize; 437 438 outInfo->mOwnedByUs = false; 439 outQueue.erase(outQueue.begin()); 440 outInfo = NULL; 441 notifyFillBufferDone(outHeader); 442 outHeader = NULL; 443 } 444 445 if (inHeader->nFilledLen == 0) { 446 inInfo->mOwnedByUs = false; 447 inQueue.erase(inQueue.begin()); 448 inInfo = NULL; 449 notifyEmptyBufferDone(inHeader); 450 inHeader = NULL; 451 } 452 453 if (decoderErr == AAC_DEC_OK) { 454 ++mInputBufferCount; 455 } 456 } 457} 458 459void SoftAAC2::onPortFlushCompleted(OMX_U32 portIndex) { 460 if (portIndex == 0) { 461 // Make sure that the next buffer output does not still 462 // depend on fragments from the last one decoded. 463 aacDecoder_SetParam(mAACDecoder, AAC_TPDEC_CLEAR_BUFFER, 1); 464 mIsFirst = true; 465 } 466} 467 468void SoftAAC2::onPortEnableCompleted(OMX_U32 portIndex, bool enabled) { 469 if (portIndex != 1) { 470 return; 471 } 472 473 switch (mOutputPortSettingsChange) { 474 case NONE: 475 break; 476 477 case AWAITING_DISABLED: 478 { 479 CHECK(!enabled); 480 mOutputPortSettingsChange = AWAITING_ENABLED; 481 break; 482 } 483 484 default: 485 { 486 CHECK_EQ((int)mOutputPortSettingsChange, (int)AWAITING_ENABLED); 487 CHECK(enabled); 488 mOutputPortSettingsChange = NONE; 489 break; 490 } 491 } 492} 493 494} // namespace android 495 496android::SoftOMXComponent *createSoftOMXComponent( 497 const char *name, const OMX_CALLBACKTYPE *callbacks, 498 OMX_PTR appData, OMX_COMPONENTTYPE **component) { 499 return new android::SoftAAC2(name, callbacks, appData, component); 500} 501