986267300b
Deleting the old internal audaspace. Major changes from there are: - The whole library was refactored to use C++11. - Many stability and performance improvements. - Major Python API refactor: - Most requested: Play self generated sounds using numpy arrays. - For games: Sound list, random sounds and dynamic music. - Writing sounds to files. - Sequencing API. - Opening sound devices, eg. Jack. - Ability to choose different OpenAL devices in the user settings.
97 lines
2.2 KiB
C++
97 lines
2.2 KiB
C++
/*******************************************************************************
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* Copyright 2009-2016 Jörg Müller
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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******************************************************************************/
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#include "OpenALReader.h"
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#include "respec/ConverterFunctions.h"
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#include "Exception.h"
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#include <algorithm>
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#include <al.h>
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AUD_NAMESPACE_BEGIN
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OpenALReader::OpenALReader(Specs specs, int buffersize) :
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m_specs(specs),
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m_position(0),
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m_device(nullptr)
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{
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if((specs.channels != CHANNELS_MONO) && (specs.channels != CHANNELS_STEREO))
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specs.channels = CHANNELS_MONO;
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m_device = alcCaptureOpenDevice(nullptr, specs.rate,
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specs.channels == CHANNELS_MONO ? AL_FORMAT_MONO16 : AL_FORMAT_STEREO16,
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buffersize * specs.channels * 2);
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if(!m_device)
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AUD_THROW(DeviceException, "The capture device couldn't be opened with OpenAL.");
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alcCaptureStart(m_device);
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}
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OpenALReader::~OpenALReader()
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{
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if(m_device)
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{
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//alcCaptureStop(m_device);
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alcCaptureCloseDevice(m_device);
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}
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}
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bool OpenALReader::isSeekable() const
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{
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return false;
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}
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void OpenALReader::seek(int position)
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{
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m_position = position;
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}
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int OpenALReader::getLength() const
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{
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int length;
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alcGetIntegerv(m_device, ALC_CAPTURE_SAMPLES, 1, &length);
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return length;
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}
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int OpenALReader::getPosition() const
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{
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return m_position;
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}
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Specs OpenALReader::getSpecs() const
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{
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return m_specs;
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}
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void OpenALReader::read(int & length, bool& eos, sample_t* buffer)
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{
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int len = getLength();
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length = std::min(length, len);
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if(length > 0)
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{
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alcCaptureSamples(m_device, buffer, length);
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convert_s16_float((data_t*)buffer, (data_t*)buffer, length * m_specs.channels);
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}
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eos = false;
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m_position += length;
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}
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AUD_NAMESPACE_END
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