81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
/*
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Copyright (c) 2016 yvt
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This file is part of OpenSpades.
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OpenSpades 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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OpenSpades 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 OpenSpades. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <tuple>
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#include <regex>
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#include "AudioStream.h"
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#include "WavAudioStream.h"
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#include "OpusAudioStream.h"
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#include <Core/FileManager.h>
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#include <Core/Exception.h>
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namespace spades {
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namespace {
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std::regex const wavRegex{".*\\.wav", std::regex::icase};
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std::regex const opusRegex{".*\\.(?:opus|ogg)", std::regex::icase};
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using CodecInfo = std::tuple<std::string, IAudioStream *(*)(IStream *stream, bool autoClose), std::regex const &>;
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CodecInfo g_codecs[] = {
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CodecInfo {"WAV Decoder", [] (IStream *stream, bool autoClose) -> IAudioStream * {
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return new WavAudioStream(stream, autoClose);
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}, wavRegex},
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CodecInfo {"Opus Decoder", [] (IStream *stream, bool autoClose) -> IAudioStream * {
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return new OpusAudioStream(stream, autoClose);
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}, opusRegex}
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};
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}
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IAudioStream *OpenAudioStream(const std::string &fileName) {
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std::string errMsg;
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for (const auto &codec: g_codecs) {
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if (!std::regex_match(fileName, std::get<2>(codec))) {
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continue;
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}
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// give it a try.
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// open error shouldn't be handled here
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auto stream = FileManager::OpenForReading(fileName.c_str());
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try {
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auto parsedStream = std::get<1>(codec)(stream.get(), true);
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// The ownership of `stream` moves to `parsedStream` if the load
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// succeeds
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stream.release();
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return parsedStream;
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} catch (const std::exception &ex) {
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errMsg += std::get<0>(codec);
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errMsg += ":\n";
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errMsg += ex.what();
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errMsg += "\n\n";
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}
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}
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if (errMsg.empty()) {
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SPRaise("Audio codec not found for filename: %s", fileName.c_str());
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} else {
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SPRaise("No audio codec could load file successfully: %s\n%s\n", fileName.c_str(),
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errMsg.c_str());
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}
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}
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}
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