108 lines
3.2 KiB
C++
108 lines
3.2 KiB
C++
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/**
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* Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0.
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*/
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#include <aws/text-to-speech/linux/PulseAudioPCMOutputDriver.h>
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#include <aws/core/utils/StringUtils.h>
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#include <aws/core/utils/logging/LogMacros.h>
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#include <pulse/error.h>
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using namespace Aws::Utils;
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namespace Aws
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{
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namespace TextToSpeech
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{
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static const char* APP_NAME = "Aws::Polly::TextToSpeech";
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static const char* CLASS_NAME = "PulseAudioPCMOutputDriver";
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PulseAudioPCMOutputDriver::PulseAudioPCMOutputDriver() : m_driver(0) {}
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PulseAudioPCMOutputDriver::~PulseAudioPCMOutputDriver()
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{
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if(m_driver)
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{
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pa_simple_free(m_driver);
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}
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}
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bool PulseAudioPCMOutputDriver::WriteBufferToDevice(const unsigned char* buffer, size_t size)
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{
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InitDevice();
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if(m_driver)
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{
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int error(-1);
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if(pa_simple_write(m_driver, buffer, size, &error) < 0)
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{
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AWS_LOGSTREAM_ERROR(CLASS_NAME, " error writing buffer to output device " << pa_strerror(error));
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return false;
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}
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return true;
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}
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return false;
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}
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Aws::Vector<DeviceInfo> PulseAudioPCMOutputDriver::EnumerateDevices() const
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{
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Aws::Vector<DeviceInfo> devices;
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DeviceInfo deviceInfo;
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deviceInfo.deviceId = "0";
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deviceInfo.deviceName = "default audio output device";
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CapabilityInfo capabilityInfo;
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capabilityInfo.channels = MONO;
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capabilityInfo.sampleRate = KHZ_16;
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capabilityInfo.sampleWidthBits = BIT_WIDTH_16;
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deviceInfo.capabilities.push_back(capabilityInfo);
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capabilityInfo.sampleRate = KHZ_8;
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deviceInfo.capabilities.push_back(capabilityInfo);
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devices.push_back(deviceInfo);
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return devices;
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}
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void PulseAudioPCMOutputDriver::SetActiveDevice(const DeviceInfo& deviceInfo, const CapabilityInfo& capabilityInfo)
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{
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m_activeDevice = deviceInfo;
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m_selectedCaps.channels = static_cast<uint8_t>(capabilityInfo.channels);
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m_selectedCaps.rate = static_cast<uint32_t>(capabilityInfo.sampleRate);
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m_selectedCaps.format = PA_SAMPLE_S16LE;
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if(m_driver)
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{
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pa_simple_free(m_driver);
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m_driver = nullptr;
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}
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InitDevice();
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}
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const char* PulseAudioPCMOutputDriver::GetName() const
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{
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return "Linux (Pulse Audio)";
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}
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void PulseAudioPCMOutputDriver::InitDevice()
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{
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if (!m_driver)
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{
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int errorCode = -1;
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m_driver = pa_simple_new(nullptr, APP_NAME, PA_STREAM_PLAYBACK, NULL, "playback", &m_selectedCaps, nullptr, nullptr, &errorCode);
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if(!m_driver)
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{
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AWS_LOGSTREAM_ERROR(CLASS_NAME, " error initializing device " << pa_strerror(errorCode));
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}
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}
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}
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}
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}
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