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/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#include "fatfs_source.hpp"
#include <cstddef>
#include <cstdint>
#include <memory>
#include "esp_log.h"
#include "ff.h"
#include "audio_source.hpp"
#include "codec.hpp"
#include "spi.hpp"
#include "types.hpp"
namespace audio {
[[maybe_unused]] static constexpr char kTag[] = "fatfs_src";
FatfsSource::FatfsSource(codecs::StreamType t, std::unique_ptr<FIL> file)
: IStream(t), file_(std::move(file)) {}
FatfsSource::~FatfsSource() {
auto lock = drivers::acquire_spi();
f_close(file_.get());
}
auto FatfsSource::Read(cpp::span<std::byte> dest) -> ssize_t {
auto lock = drivers::acquire_spi();
if (f_eof(file_.get())) {
return 0;
}
UINT bytes_read = 0;
FRESULT res = f_read(file_.get(), dest.data(), dest.size(), &bytes_read);
if (res != FR_OK) {
ESP_LOGE(kTag, "error reading from file");
return -1;
}
return bytes_read;
}
auto FatfsSource::CanSeek() -> bool {
return true;
}
auto FatfsSource::SeekTo(int64_t destination, SeekFrom from) -> void {
auto lock = drivers::acquire_spi();
switch (from) {
case SeekFrom::kStartOfStream:
f_lseek(file_.get(), destination);
break;
case SeekFrom::kEndOfStream:
f_lseek(file_.get(), f_size(file_.get()) + destination);
break;
case SeekFrom::kCurrentPosition:
f_lseek(file_.get(), f_tell(file_.get()) + destination);
break;
}
}
auto FatfsSource::CurrentPosition() -> int64_t {
return f_tell(file_.get());
}
} // namespace audio
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