/*
* Copyright ( C ) 2020 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 .
*/
#pragma once
#include <memory>
#include <tinyalsa/asoundlib.h>
namespace android {
namespace hardware {
namespace audio {
namespace CPP_VERSION {
namespace implementation {
namespace talsa {
constexpr unsigned int kPcmDevice = 0 ;
constexpr unsigned int kPcmCard = 0 ;
struct PcmPeriodSettings {
unsigned periodCount;
unsigned periodSizeMultiplier;
};
void init();
PcmPeriodSettings pcmGetPcmPeriodSettings();
unsigned pcmGetHostLatencyMs();
typedef struct pcm pcm_t;
struct PcmDeleter { void operator ()(pcm_t *x) const ; };
typedef std::unique_ptr<pcm_t, PcmDeleter> PcmPtr;
PcmPtr pcmOpen(unsigned int dev, unsigned int card, unsigned int nChannels,
size_t sampleRateHz, size_t frameCount, bool isOut);
int pcmRead(pcm_t *pcm, void *data, int szBytes, unsigned int frameSize);
int pcmWrite(pcm_t *pcm, const void *data, int szBytes, unsigned int frameSize);
class Mixer {
public :
Mixer(unsigned card);
~Mixer();
operator bool () const { return mMixer != nullptr; }
Mixer(const Mixer &) = delete ;
Mixer &operator =(const Mixer &) = delete ;
Mixer(Mixer &&) = delete ;
Mixer &operator =(Mixer &&) = delete ;
private :
struct mixer *mMixer;
};
} // namespace talsa
} // namespace implementation
} // namespace CPP_VERSION
} // namespace audio
} // namespace hardware
} // namespace android
Messung V0.5 in Prozent C=90 H=95 G=92
¤ Dauer der Verarbeitung: 0.8 Sekunden
(vorverarbeitet am 2026-06-27)
¤
*© Formatika GbR, Deutschland