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/*
* Copyright 2023 jacqueline <me@jacqueline.id.au>
*
* SPDX-License-Identifier: GPL-3.0-only
*/
#include "fatfs_audio_input.hpp"
#include <algorithm>
#include <climits>
#include <cstddef>
#include <cstdint>
#include <functional>
#include <future>
#include <memory>
#include <mutex>
#include <string>
#include <variant>
#include "esp_heap_caps.h"
#include "esp_log.h"
#include "ff.h"
#include "freertos/portmacro.h"
#include "freertos/projdefs.h"
#include "readahead_source.hpp"
#include "span.hpp"
#include "audio_events.hpp"
#include "audio_fsm.hpp"
#include "audio_source.hpp"
#include "codec.hpp"
#include "event_queue.hpp"
#include "fatfs_source.hpp"
#include "future_fetcher.hpp"
#include "spi.hpp"
#include "tag_parser.hpp"
#include "tasks.hpp"
#include "track.hpp"
#include "types.hpp"
[[maybe_unused]] static const char* kTag = "SRC";
namespace audio {
FatfsAudioInput::FatfsAudioInput(database::ITagParser& tag_parser,
tasks::WorkerPool& bg_worker)
: IAudioSource(),
tag_parser_(tag_parser),
bg_worker_(bg_worker),
new_stream_mutex_(),
new_stream_(),
has_new_stream_(false) {}
FatfsAudioInput::~FatfsAudioInput() {}
auto FatfsAudioInput::SetPath(std::optional<std::string> path) -> void {
if (path) {
SetPath(*path);
} else {
SetPath();
}
}
auto FatfsAudioInput::SetPath(const std::string& path,uint32_t offset) -> void {
std::lock_guard<std::mutex> guard{new_stream_mutex_};
if (OpenFile(path, offset)) {
has_new_stream_ = true;
has_new_stream_.notify_one();
}
}
auto FatfsAudioInput::SetPath() -> void {
std::lock_guard<std::mutex> guard{new_stream_mutex_};
new_stream_.reset();
has_new_stream_ = true;
has_new_stream_.notify_one();
}
auto FatfsAudioInput::HasNewStream() -> bool {
return has_new_stream_;
}
auto FatfsAudioInput::NextStream() -> std::shared_ptr<TaggedStream> {
while (true) {
has_new_stream_.wait(false);
{
std::lock_guard<std::mutex> guard{new_stream_mutex_};
if (!has_new_stream_.exchange(false)) {
// If the new stream went away, then we need to go back to waiting.
continue;
}
if (new_stream_ == nullptr) {
continue;
}
auto stream = new_stream_;
new_stream_ = nullptr;
return stream;
}
}
}
auto FatfsAudioInput::OpenFile(const std::string& path,uint32_t offset) -> bool {
ESP_LOGI(kTag, "opening file %s", path.c_str());
auto tags = tag_parser_.ReadAndParseTags(path);
if (!tags) {
ESP_LOGE(kTag, "failed to read tags");
return false;
}
if (!tags->title()) {
tags->title(path);
}
auto stream_type = ContainerToStreamType(tags->encoding());
if (!stream_type.has_value()) {
ESP_LOGE(kTag, "couldn't match container to stream");
return false;
}
std::unique_ptr<FIL> file = std::make_unique<FIL>();
FRESULT res;
{
auto lock = drivers::acquire_spi();
res = f_open(file.get(), path.c_str(), FA_READ);
}
if (res != FR_OK) {
ESP_LOGE(kTag, "failed to open file! res: %i", res);
return false;
}
auto source =
std::make_unique<FatfsSource>(stream_type.value(), std::move(file));
new_stream_.reset(new TaggedStream(tags, std::move(source), path, offset));
return true;
}
auto FatfsAudioInput::ContainerToStreamType(database::Container enc)
-> std::optional<codecs::StreamType> {
switch (enc) {
case database::Container::kMp3:
return codecs::StreamType::kMp3;
case database::Container::kWav:
return codecs::StreamType::kWav;
case database::Container::kOgg:
return codecs::StreamType::kVorbis;
case database::Container::kFlac:
return codecs::StreamType::kFlac;
case database::Container::kOpus:
return codecs::StreamType::kOpus;
case database::Container::kUnsupported:
default:
return {};
}
}
} // namespace audio
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