61 lines
1.9 KiB
C++
61 lines
1.9 KiB
C++
/*
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AudioOutputI2SNoDACS3
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Class for outputting PDM audio on the ESP32-S3 without an external DAC
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Copyright (C) 2024 Hema2
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include "AudioOutput.h"
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#include "driver/i2s.h"
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#include <Arduino.h>
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#if CONFIG_IDF_TARGET_ESP32S3
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class AudioOutputI2SNoDACS3 : public AudioOutput
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{
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public:
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/// @brief No-DAC Audio Output for ESP32-S3
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/// @param doutPin Pin to modulate audio on (PDM data)
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/// @param dummyPin Dummy pin to use for WS/BCLK (PDM clock)
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/// @param port
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/// @param dma_buf_count
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AudioOutputI2SNoDACS3(int doutPin, int dummyPin = GPIO_NUM_3, int port=0, int dma_buf_count = 8);
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virtual ~AudioOutputI2SNoDACS3() override;
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virtual bool SetRate(int hz) override;
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virtual bool SetBitsPerSample(int bits) override;
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virtual bool SetChannels(int channels) override;
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virtual bool begin() override;
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virtual bool ConsumeSample(int16_t sample[2]) override;
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virtual void flush() override;
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virtual bool stop() override;
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bool SetOutputModeMono(bool mono); // Force mono output no matter the input
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protected:
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virtual int AdjustI2SRate(int hz) { return (int)((float)hz / 1.0f); }
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uint8_t portNo;
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bool mono;
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bool i2sOn;
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int dma_buf_count;
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gpio_num_t doutPin;
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gpio_num_t dummyPin;
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};
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#endif // CONFIG_IDF_TARGET_ESP32S3
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