| /* |
| * Copyright (C) 2010 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| //#define LOG_NDEBUG 0 |
| #define LOG_TAG "AMRWBEncoder" |
| #include <utils/Log.h> |
| |
| #include "AMRWBEncoder.h" |
| #include "voAMRWB.h" |
| #include "cmnMemory.h" |
| |
| #include <media/stagefright/MediaBufferGroup.h> |
| #include <media/stagefright/MediaDebug.h> |
| #include <media/stagefright/MediaDefs.h> |
| #include <media/stagefright/MediaErrors.h> |
| #include <media/stagefright/MetaData.h> |
| |
| namespace android { |
| |
| static const int32_t kNumSamplesPerFrame = 320; |
| static const int32_t kBitsPerSample = 16; |
| static const int32_t kInputBufferSize = (kBitsPerSample / 8) * kNumSamplesPerFrame; |
| static const int32_t kSampleRate = 16000; |
| static const int32_t kNumChannels = 1; |
| |
| AMRWBEncoder::AMRWBEncoder(const sp<MediaSource> &source, const sp<MetaData> &meta) |
| : mSource(source), |
| mMeta(meta), |
| mStarted(false), |
| mBufferGroup(NULL), |
| mInputBuffer(NULL), |
| mEncoderHandle(NULL), |
| mApiHandle(NULL), |
| mMemOperator(NULL), |
| mAnchorTimeUs(0), |
| mNumFramesOutput(0), |
| mNumInputSamples(0) { |
| } |
| |
| static VOAMRWBMODE pickModeFromBitRate(int32_t bps) { |
| CHECK(bps >= 0); |
| if (bps <= 6600) { |
| return VOAMRWB_MD66; |
| } else if (bps <= 8850) { |
| return VOAMRWB_MD885; |
| } else if (bps <= 12650) { |
| return VOAMRWB_MD1265; |
| } else if (bps <= 14250) { |
| return VOAMRWB_MD1425; |
| } else if (bps <= 15850) { |
| return VOAMRWB_MD1585; |
| } else if (bps <= 18250) { |
| return VOAMRWB_MD1825; |
| } else if (bps <= 19850) { |
| return VOAMRWB_MD1985; |
| } else if (bps <= 23050) { |
| return VOAMRWB_MD2305; |
| } |
| return VOAMRWB_MD2385; |
| } |
| |
| status_t AMRWBEncoder::initCheck() { |
| CHECK(mApiHandle == NULL && mEncoderHandle == NULL); |
| CHECK(mMeta->findInt32(kKeyBitRate, &mBitRate)); |
| |
| mApiHandle = new VO_AUDIO_CODECAPI; |
| CHECK(mApiHandle); |
| |
| if (VO_ERR_NONE != voGetAMRWBEncAPI(mApiHandle)) { |
| LOGE("Failed to get api handle"); |
| return UNKNOWN_ERROR; |
| } |
| |
| mMemOperator = new VO_MEM_OPERATOR; |
| CHECK(mMemOperator != NULL); |
| mMemOperator->Alloc = cmnMemAlloc; |
| mMemOperator->Copy = cmnMemCopy; |
| mMemOperator->Free = cmnMemFree; |
| mMemOperator->Set = cmnMemSet; |
| mMemOperator->Check = cmnMemCheck; |
| |
| VO_CODEC_INIT_USERDATA userData; |
| memset(&userData, 0, sizeof(userData)); |
| userData.memflag = VO_IMF_USERMEMOPERATOR; |
| userData.memData = (VO_PTR) mMemOperator; |
| if (VO_ERR_NONE != mApiHandle->Init(&mEncoderHandle, VO_AUDIO_CodingAMRWB, &userData)) { |
| LOGE("Failed to init AMRWB encoder"); |
| return UNKNOWN_ERROR; |
| } |
| |
| // Configure AMRWB encoder$ |
| VOAMRWBMODE mode = pickModeFromBitRate(mBitRate); |
| if (VO_ERR_NONE != mApiHandle->SetParam(mEncoderHandle, VO_PID_AMRWB_MODE, &mode)) { |
| LOGE("Failed to set AMRWB encoder mode to %d", mode); |
| return UNKNOWN_ERROR; |
| } |
| |
| VOAMRWBFRAMETYPE type = VOAMRWB_RFC3267; |
| if (VO_ERR_NONE != mApiHandle->SetParam(mEncoderHandle, VO_PID_AMRWB_FRAMETYPE, &type)) { |
| LOGE("Failed to set AMRWB encoder frame type to %d", type); |
| return UNKNOWN_ERROR; |
| } |
| |
| return OK; |
| } |
| |
| AMRWBEncoder::~AMRWBEncoder() { |
| if (mStarted) { |
| stop(); |
| } |
| } |
| |
| status_t AMRWBEncoder::start(MetaData *params) { |
| if (mStarted) { |
| LOGW("Call start() when encoder already started"); |
| return OK; |
| } |
| |
| mBufferGroup = new MediaBufferGroup; |
| |
| // The largest buffer size is header + 477 bits |
| mBufferGroup->add_buffer(new MediaBuffer(1024)); |
| |
| CHECK_EQ(OK, initCheck()); |
| |
| mNumFramesOutput = 0; |
| |
| status_t err = mSource->start(params); |
| if (err != OK) { |
| LOGE("AudioSource is not available"); |
| return err; |
| } |
| mStarted = true; |
| |
| return OK; |
| } |
| |
| status_t AMRWBEncoder::stop() { |
| if (!mStarted) { |
| LOGW("Call stop() when encoder has not started"); |
| return OK; |
| } |
| |
| if (mInputBuffer) { |
| mInputBuffer->release(); |
| mInputBuffer = NULL; |
| } |
| |
| delete mBufferGroup; |
| mBufferGroup = NULL; |
| |
| |
| CHECK_EQ(VO_ERR_NONE, mApiHandle->Uninit(mEncoderHandle)); |
| mEncoderHandle = NULL; |
| |
| delete mApiHandle; |
| mApiHandle = NULL; |
| |
| delete mMemOperator; |
| mMemOperator; |
| |
| mStarted = false; |
| |
| mSource->stop(); |
| return OK; |
| } |
| |
| sp<MetaData> AMRWBEncoder::getFormat() { |
| sp<MetaData> srcFormat = mSource->getFormat(); |
| |
| mMeta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_AMR_WB); |
| |
| int64_t durationUs; |
| if (srcFormat->findInt64(kKeyDuration, &durationUs)) { |
| mMeta->setInt64(kKeyDuration, durationUs); |
| } |
| |
| mMeta->setCString(kKeyDecoderComponent, "AMRWBEncoder"); |
| |
| return mMeta; |
| } |
| |
| status_t AMRWBEncoder::read( |
| MediaBuffer **out, const ReadOptions *options) { |
| status_t err; |
| |
| *out = NULL; |
| |
| int64_t seekTimeUs; |
| ReadOptions::SeekMode mode; |
| CHECK(options == NULL || !options->getSeekTo(&seekTimeUs, &mode)); |
| bool readFromSource = false; |
| int64_t wallClockTimeUs = -1; |
| |
| while (mNumInputSamples < kNumSamplesPerFrame) { |
| if (mInputBuffer == NULL) { |
| err = mSource->read(&mInputBuffer, options); |
| |
| if (err != OK) { |
| if (mNumInputSamples == 0) { |
| return ERROR_END_OF_STREAM; |
| } |
| memset(&mInputFrame[mNumInputSamples], |
| 0, |
| sizeof(int16_t) |
| * (kNumSamplesPerFrame - mNumInputSamples)); |
| mNumInputSamples = 0; |
| break; |
| } |
| |
| size_t align = mInputBuffer->range_length() % sizeof(int16_t); |
| CHECK_EQ(align, 0); |
| |
| int64_t timeUs; |
| if (mInputBuffer->meta_data()->findInt64(kKeyDriftTime, &timeUs)) { |
| wallClockTimeUs = timeUs; |
| } |
| if (mInputBuffer->meta_data()->findInt64(kKeyAnchorTime, &timeUs)) { |
| mAnchorTimeUs = timeUs; |
| } |
| readFromSource = true; |
| } else { |
| readFromSource = false; |
| } |
| |
| size_t copy = |
| (kNumSamplesPerFrame - mNumInputSamples) * sizeof(int16_t); |
| |
| if (copy > mInputBuffer->range_length()) { |
| copy = mInputBuffer->range_length(); |
| } |
| |
| memcpy(&mInputFrame[mNumInputSamples], |
| (const uint8_t *)mInputBuffer->data() |
| + mInputBuffer->range_offset(), |
| copy); |
| |
| mInputBuffer->set_range( |
| mInputBuffer->range_offset() + copy, |
| mInputBuffer->range_length() - copy); |
| |
| if (mInputBuffer->range_length() == 0) { |
| mInputBuffer->release(); |
| mInputBuffer = NULL; |
| } |
| |
| mNumInputSamples += copy / sizeof(int16_t); |
| if (mNumInputSamples >= kNumSamplesPerFrame) { |
| mNumInputSamples %= kNumSamplesPerFrame; |
| break; // Get a whole input frame 640 bytes |
| } |
| } |
| |
| VO_CODECBUFFER inputData; |
| memset(&inputData, 0, sizeof(inputData)); |
| inputData.Buffer = (unsigned char*) mInputFrame; |
| inputData.Length = kInputBufferSize; |
| CHECK(VO_ERR_NONE == mApiHandle->SetInputData(mEncoderHandle,&inputData)); |
| |
| MediaBuffer *buffer; |
| CHECK_EQ(mBufferGroup->acquire_buffer(&buffer), OK); |
| uint8_t *outPtr = (uint8_t *)buffer->data(); |
| |
| VO_CODECBUFFER outputData; |
| memset(&outputData, 0, sizeof(outputData)); |
| VO_AUDIO_OUTPUTINFO outputInfo; |
| memset(&outputInfo, 0, sizeof(outputInfo)); |
| |
| VO_U32 ret = VO_ERR_NONE; |
| outputData.Buffer = outPtr; |
| outputData.Length = buffer->size(); |
| ret = mApiHandle->GetOutputData(mEncoderHandle, &outputData, &outputInfo); |
| CHECK(ret == VO_ERR_NONE || ret == VO_ERR_INPUT_BUFFER_SMALL); |
| |
| buffer->set_range(0, outputData.Length); |
| ++mNumFramesOutput; |
| |
| int64_t mediaTimeUs = mNumFramesOutput * 20000LL; |
| buffer->meta_data()->setInt64(kKeyTime, mAnchorTimeUs + mediaTimeUs); |
| if (readFromSource && wallClockTimeUs != -1) { |
| buffer->meta_data()->setInt64(kKeyDriftTime, mediaTimeUs - wallClockTimeUs); |
| } |
| |
| *out = buffer; |
| return OK; |
| } |
| |
| } // namespace android |