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extern/audaspace/plugins/openal/OpenALReader.cpp
- This file was added.
| /******************************************************************************* | |||||
| * Copyright 2009-2016 Jörg Müller | |||||
| * | |||||
| * 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 "OpenALReader.h" | |||||
| #include "respec/ConverterFunctions.h" | |||||
| #include "Exception.h" | |||||
| #include <algorithm> | |||||
| #include <al.h> | |||||
| AUD_NAMESPACE_BEGIN | |||||
| OpenALReader::OpenALReader(Specs specs, int buffersize) : | |||||
| m_specs(specs), | |||||
| m_position(0), | |||||
| m_device(nullptr) | |||||
| { | |||||
| if((specs.channels != CHANNELS_MONO) && (specs.channels != CHANNELS_STEREO)) | |||||
| specs.channels = CHANNELS_MONO; | |||||
| m_device = alcCaptureOpenDevice(nullptr, specs.rate, | |||||
| specs.channels == CHANNELS_MONO ? AL_FORMAT_MONO16 : AL_FORMAT_STEREO16, | |||||
| buffersize * specs.channels * 2); | |||||
| if(!m_device) | |||||
| AUD_THROW(DeviceException, "The capture device couldn't be opened with OpenAL."); | |||||
| alcCaptureStart(m_device); | |||||
| } | |||||
| OpenALReader::~OpenALReader() | |||||
| { | |||||
| if(m_device) | |||||
| { | |||||
| //alcCaptureStop(m_device); | |||||
| alcCaptureCloseDevice(m_device); | |||||
| } | |||||
| } | |||||
| bool OpenALReader::isSeekable() const | |||||
| { | |||||
| return false; | |||||
| } | |||||
| void OpenALReader::seek(int position) | |||||
| { | |||||
| m_position = position; | |||||
| } | |||||
| int OpenALReader::getLength() const | |||||
| { | |||||
| int length; | |||||
| alcGetIntegerv(m_device, ALC_CAPTURE_SAMPLES, 1, &length); | |||||
| return length; | |||||
| } | |||||
| int OpenALReader::getPosition() const | |||||
| { | |||||
| return m_position; | |||||
| } | |||||
| Specs OpenALReader::getSpecs() const | |||||
| { | |||||
| return m_specs; | |||||
| } | |||||
| void OpenALReader::read(int & length, bool& eos, sample_t* buffer) | |||||
| { | |||||
| int len = getLength(); | |||||
| length = std::min(length, len); | |||||
| if(length > 0) | |||||
| { | |||||
| alcCaptureSamples(m_device, buffer, length); | |||||
| convert_s16_float((data_t*)buffer, (data_t*)buffer, length * m_specs.channels); | |||||
| } | |||||
| eos = false; | |||||
| m_position += length; | |||||
| } | |||||
| AUD_NAMESPACE_END | |||||