mirror of
https://github.com/love2d/love.git
synced 2026-08-18 11:44:15 +02:00
Alex Szpakowski
155 lines
3.1 KiB
C++
155 lines
3.1 KiB
C++
/**
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* Copyright (c) 2006-2017 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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#include "common/config.h"
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#ifdef LOVE_SUPPORT_GME
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#include "common/Exception.h"
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#include "GmeDecoder.h"
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namespace love
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{
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namespace sound
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{
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namespace lullaby
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{
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GmeDecoder::GmeDecoder(Data *data, const std::string &ext, int bufferSize)
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: Decoder(data, ext, bufferSize)
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, emu(0)
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, num_tracks(0)
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, cur_track(0)
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{
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void *d = data->getData();
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int s = data->getSize();
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if (gme_open_data(d, s, &emu, sampleRate) != 0)
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throw love::Exception("Could not open game music file");
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num_tracks = gme_track_count(emu);
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try
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{
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if (num_tracks <= 0)
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throw love::Exception("Game music file has no tracks");
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if (gme_start_track(emu, cur_track) != 0)
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throw love::Exception("Could not start game music playback");
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}
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catch (love::Exception &)
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{
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gme_delete(emu);
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throw;
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}
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}
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GmeDecoder::~GmeDecoder()
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{
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if (emu)
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gme_delete(emu);
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}
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bool GmeDecoder::accepts(const std::string &ext)
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{
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static const std::string supported[] =
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{
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"ay", "gbs", "gym", "hes", "kss", "nsf",
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"nsfe", "sap", "spc", "vgm", "vgz", ""
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};
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for (int i = 0; !(supported[i].empty()); i++)
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{
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if (supported[i].compare(ext) == 0)
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return true;
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}
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return false;
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}
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love::sound::Decoder *GmeDecoder::clone()
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{
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return new GmeDecoder(data.get(), ext, bufferSize);
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}
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int GmeDecoder::decode()
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{
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short *sbuf = static_cast<short*>(buffer);
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int size = bufferSize / sizeof(short);
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if (gme_play(emu, size, sbuf) != 0)
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throw love::Exception("Error while decoding game music");
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if (!eof && gme_track_ended(emu))
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{
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// Start the next track if this one ended.
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if (cur_track < num_tracks - 1)
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gme_start_track(emu, ++cur_track);
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else
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eof = true;
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}
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return bufferSize;
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}
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bool GmeDecoder::seek(float s)
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{
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return gme_seek(emu, static_cast<long>(s * 1000.f)) != 0;
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}
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bool GmeDecoder::rewind()
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{
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// If we're in the first track, rewind.
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if (cur_track == 0)
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return gme_seek(emu, 0) == 0;
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else
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{
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// Otherwise, start from the first track again.
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cur_track = 0;
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return gme_start_track(emu, cur_track) == 0;
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}
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}
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bool GmeDecoder::isSeekable()
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{
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return true;
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}
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int GmeDecoder::getChannels() const
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{
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return 2;
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}
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int GmeDecoder::getBitDepth() const
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{
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return 16;
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}
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double GmeDecoder::getDuration()
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{
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return -1;
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}
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} // lullaby
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} // sound
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} // love
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#endif // LOVE_SUPPORT_GME
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