mirror of https://github.com/odrling/Aegisub
85 lines
3.1 KiB
C++
85 lines
3.1 KiB
C++
// Copyright (c) 2014, Thomas Goyne <plorkyeran@aegisub.org>
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//
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// Permission to use, copy, modify, and distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice appear in all copies.
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//
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// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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//
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// Aegisub Project http://www.aegisub.org/
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#include "include/aegisub/audio_provider.h"
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#include "audio_controller.h"
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#include "compat.h"
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#include "options.h"
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#include <libaegisub/background_runner.h>
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#include <libaegisub/file_mapping.h>
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#include <libaegisub/fs.h>
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#include <libaegisub/path.h>
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#include <libaegisub/util.h>
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#include <boost/algorithm/string/predicate.hpp>
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#include <boost/algorithm/string/replace.hpp>
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#include <boost/filesystem.hpp>
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#include <boost/format.hpp>
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#include <boost/interprocess/detail/os_thread_functions.hpp>
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#include <wx/intl.h>
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namespace {
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class HDAudioProvider final : public AudioProviderWrapper {
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std::unique_ptr<agi::temp_file_mapping> file;
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void FillBuffer(void *buf, int64_t start, int64_t count) const override {
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start *= channels * bytes_per_sample;
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count *= channels * bytes_per_sample;
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memcpy(buf, file->read(start, count), count);
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}
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public:
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HDAudioProvider(std::unique_ptr<AudioProvider> src, agi::BackgroundRunner *br)
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: AudioProviderWrapper(std::move(src))
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{
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auto path = OPT_GET("Audio/Cache/HD/Location")->GetString();
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if (path == "default")
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path = "?temp";
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auto cache_dir = config::path->MakeAbsolute(config::path->Decode(path), "?temp");
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auto bps = bytes_per_sample * channels;
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// Check free space
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if ((uint64_t)num_samples * bps > agi::fs::FreeSpace(cache_dir))
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throw agi::AudioCacheOpenError("Not enough free disk space in " + cache_dir.string() + " to cache the audio", nullptr);
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auto filename = str(boost::format("audio-%lld-%lld")
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% (long long)time(nullptr)
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% (long long)boost::interprocess::ipcdetail::get_current_process_id());
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file = agi::util::make_unique<agi::temp_file_mapping>(cache_dir / filename, num_samples * bps);
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br->Run([&] (agi::ProgressSink *ps) {
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ps->SetTitle(from_wx(_("Load audio")));
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ps->SetMessage(from_wx(_("Reading to Hard Disk cache")));
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int64_t block = 65536;
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for (int64_t i = 0; i < num_samples; i += block) {
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block = std::min(block, num_samples - i);
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source->GetAudio(file->write(i * bps, block * bps), i, block);
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ps->SetProgress(i, num_samples);
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if (ps->IsCancelled()) return;
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}
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});
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}
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};
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}
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std::unique_ptr<AudioProvider> CreateHDAudioProvider(std::unique_ptr<AudioProvider> src, agi::BackgroundRunner *br) {
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return agi::util::make_unique<HDAudioProvider>(std::move(src), br);
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}
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