diff options
Diffstat (limited to 'media/libstagefright/codecs/amrwb/AMRWBDecoder.cpp')
| -rw-r--r-- | media/libstagefright/codecs/amrwb/AMRWBDecoder.cpp | 225 |
1 files changed, 0 insertions, 225 deletions
diff --git a/media/libstagefright/codecs/amrwb/AMRWBDecoder.cpp b/media/libstagefright/codecs/amrwb/AMRWBDecoder.cpp deleted file mode 100644 index 5b111ef..0000000 --- a/media/libstagefright/codecs/amrwb/AMRWBDecoder.cpp +++ /dev/null @@ -1,225 +0,0 @@ -/* - * Copyright (C) 2009 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. - */ - -#include "AMRWBDecoder.h" - -#include "pvamrwbdecoder.h" - -#include <media/stagefright/MediaBufferGroup.h> -#include <media/stagefright/MediaDebug.h> -#include <media/stagefright/MediaDefs.h> -#include <media/stagefright/MetaData.h> - -namespace android { - -static const int32_t kNumSamplesPerFrame = 320; -static const int32_t kSampleRate = 16000; - -AMRWBDecoder::AMRWBDecoder(const sp<MediaSource> &source) - : mSource(source), - mStarted(false), - mBufferGroup(NULL), - mState(NULL), - mDecoderBuf(NULL), - mDecoderCookie(NULL), - mAnchorTimeUs(0), - mNumSamplesOutput(0), - mInputBuffer(NULL) { -} - -AMRWBDecoder::~AMRWBDecoder() { - if (mStarted) { - stop(); - } -} - -status_t AMRWBDecoder::start(MetaData *params) { - CHECK(!mStarted); - - mBufferGroup = new MediaBufferGroup; - mBufferGroup->add_buffer( - new MediaBuffer(kNumSamplesPerFrame * sizeof(int16_t))); - - int32_t memReq = pvDecoder_AmrWbMemRequirements(); - mDecoderBuf = malloc(memReq); - - pvDecoder_AmrWb_Init(&mState, mDecoderBuf, &mDecoderCookie); - - mSource->start(); - - mAnchorTimeUs = 0; - mNumSamplesOutput = 0; - mStarted = true; - - return OK; -} - -status_t AMRWBDecoder::stop() { - CHECK(mStarted); - - if (mInputBuffer) { - mInputBuffer->release(); - mInputBuffer = NULL; - } - - delete mBufferGroup; - mBufferGroup = NULL; - - free(mDecoderBuf); - mDecoderBuf = NULL; - - mSource->stop(); - - mStarted = false; - - return OK; -} - -sp<MetaData> AMRWBDecoder::getFormat() { - sp<MetaData> srcFormat = mSource->getFormat(); - - int32_t numChannels; - int32_t sampleRate; - - CHECK(srcFormat->findInt32(kKeyChannelCount, &numChannels)); - CHECK_EQ(numChannels, 1); - - CHECK(srcFormat->findInt32(kKeySampleRate, &sampleRate)); - CHECK_EQ(sampleRate, kSampleRate); - - sp<MetaData> meta = new MetaData; - meta->setCString(kKeyMIMEType, MEDIA_MIMETYPE_AUDIO_RAW); - meta->setInt32(kKeyChannelCount, numChannels); - meta->setInt32(kKeySampleRate, sampleRate); - - int64_t durationUs; - if (srcFormat->findInt64(kKeyDuration, &durationUs)) { - meta->setInt64(kKeyDuration, durationUs); - } - - meta->setCString(kKeyDecoderComponent, "AMRWBDecoder"); - - return meta; -} - -static size_t getFrameSize(unsigned FT) { - static const size_t kFrameSizeWB[9] = { - 132, 177, 253, 285, 317, 365, 397, 461, 477 - }; - - size_t frameSize = kFrameSizeWB[FT]; - - // Round up bits to bytes and add 1 for the header byte. - frameSize = (frameSize + 7) / 8 + 1; - - return frameSize; -} - -status_t AMRWBDecoder::read( - MediaBuffer **out, const ReadOptions *options) { - status_t err; - - *out = NULL; - - int64_t seekTimeUs; - ReadOptions::SeekMode seekMode; - if (options && options->getSeekTo(&seekTimeUs, &seekMode)) { - CHECK(seekTimeUs >= 0); - - mNumSamplesOutput = 0; - - if (mInputBuffer) { - mInputBuffer->release(); - mInputBuffer = NULL; - } - } else { - seekTimeUs = -1; - } - - if (mInputBuffer == NULL) { - err = mSource->read(&mInputBuffer, options); - - if (err != OK) { - return err; - } - - int64_t timeUs; - if (mInputBuffer->meta_data()->findInt64(kKeyTime, &timeUs)) { - mAnchorTimeUs = timeUs; - mNumSamplesOutput = 0; - } else { - // We must have a new timestamp after seeking. - CHECK(seekTimeUs < 0); - } - } - - MediaBuffer *buffer; - CHECK_EQ(mBufferGroup->acquire_buffer(&buffer), OK); - - const uint8_t *inputPtr = - (const uint8_t *)mInputBuffer->data() + mInputBuffer->range_offset(); - - int16 mode = ((inputPtr[0] >> 3) & 0x0f); - size_t frameSize = getFrameSize(mode); - CHECK(mInputBuffer->range_length() >= frameSize); - - int16 frameType; - RX_State_wb rx_state; - mime_unsorting( - const_cast<uint8_t *>(&inputPtr[1]), - mInputSampleBuffer, - &frameType, &mode, 1, &rx_state); - - int16_t *outPtr = (int16_t *)buffer->data(); - - int16_t numSamplesOutput; - pvDecoder_AmrWb( - mode, mInputSampleBuffer, - outPtr, - &numSamplesOutput, - mDecoderBuf, frameType, mDecoderCookie); - - CHECK_EQ(numSamplesOutput, kNumSamplesPerFrame); - - for (int i = 0; i < kNumSamplesPerFrame; ++i) { - /* Delete the 2 LSBs (14-bit output) */ - outPtr[i] &= 0xfffC; - } - - buffer->set_range(0, numSamplesOutput * sizeof(int16_t)); - - mInputBuffer->set_range( - mInputBuffer->range_offset() + frameSize, - mInputBuffer->range_length() - frameSize); - - if (mInputBuffer->range_length() == 0) { - mInputBuffer->release(); - mInputBuffer = NULL; - } - - buffer->meta_data()->setInt64( - kKeyTime, - mAnchorTimeUs - + (mNumSamplesOutput * 1000000) / kSampleRate); - - mNumSamplesOutput += kNumSamplesPerFrame; - - *out = buffer; - - return OK; -} - -} // namespace android |