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44 lines
1.3 KiB
44 lines
1.3 KiB
#pragma once
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#include <stdint.h>
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#include "audio_element.hpp"
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#include "esp_heap_caps.h"
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#include "freertos/FreeRTOS.h"
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#include "stream_info.hpp"
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namespace audio {
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class IAudioSink {
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private:
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// TODO: tune. at least about 12KiB seems right for mp3
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static const std::size_t kDrainBufferSize = 48 * 1024;
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uint8_t* buffer_;
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StaticStreamBuffer_t* metadata_;
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StreamBufferHandle_t handle_;
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public:
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IAudioSink()
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: buffer_(reinterpret_cast<uint8_t*>(
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heap_caps_malloc(kDrainBufferSize,
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MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT))),
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metadata_(reinterpret_cast<StaticStreamBuffer_t*>(
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heap_caps_malloc(sizeof(StaticStreamBuffer_t),
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MALLOC_CAP_INTERNAL | MALLOC_CAP_8BIT))),
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handle_(xStreamBufferCreateStatic(kDrainBufferSize,
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1,
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buffer_,
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metadata_)) {}
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virtual ~IAudioSink() {
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vStreamBufferDelete(handle_);
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free(buffer_);
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free(metadata_);
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}
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virtual auto Configure(const StreamInfo::Format& format) -> bool = 0;
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virtual auto Send(const cpp::span<std::byte>& data) -> void = 0;
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virtual auto Log() -> void {}
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auto buffer() -> StreamBufferHandle_t { return handle_; }
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};
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} // namespace audio
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