mirror of
https://github.com/ZDoom/gzdoom-gles.git
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372 lines
9 KiB
C++
372 lines
9 KiB
C++
/*
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** music_gme.cpp
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** General game music player, using Game Music Emu for decoding.
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**
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**---------------------------------------------------------------------------
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** Copyright 2009 Randy Heit
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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// HEADER FILES ------------------------------------------------------------
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// Uncomment if you are using the DLL version of GME.
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//#define GME_DLL
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#include <algorithm>
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#include "streamsource.h"
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#include <gme/gme.h>
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#include <mutex>
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#include "../..//libraries/music_common/fileio.h"
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// MACROS ------------------------------------------------------------------
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// TYPES -------------------------------------------------------------------
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class GMESong : public StreamSource
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{
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public:
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GMESong(Music_Emu *emu, int sample_rate);
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~GMESong();
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bool SetSubsong(int subsong) override;
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bool Start() override;
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void ChangeSettingNum(const char *name, double val) override;
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std::string GetStats() override;
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bool GetData(void *buffer, size_t len) override;
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SoundStreamInfo GetFormat() override;
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protected:
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Music_Emu *Emu;
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gme_info_t *TrackInfo;
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int SampleRate;
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int CurrTrack;
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bool started = false;
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bool StartTrack(int track, bool getcritsec=true);
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bool GetTrackInfo();
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int CalcSongLength();
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};
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// EXTERNAL FUNCTION PROTOTYPES --------------------------------------------
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// PUBLIC FUNCTION PROTOTYPES ----------------------------------------------
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// PRIVATE FUNCTION PROTOTYPES ---------------------------------------------
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// EXTERNAL DATA DECLARATIONS ----------------------------------------------
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// PUBLIC DATA DEFINITIONS -------------------------------------------------
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// Currently not used.
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// PRIVATE DATA DEFINITIONS ------------------------------------------------
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// CODE --------------------------------------------------------------------
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//==========================================================================
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//
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// GME_CheckFormat
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//
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//==========================================================================
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const char *GME_CheckFormat(uint32_t id)
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{
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return gme_identify_header(&id);
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}
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//==========================================================================
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//
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// GME_OpenSong
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//
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//==========================================================================
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StreamSource *GME_OpenSong(MusicIO::FileInterface *reader, const char *fmt, int sample_rate)
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{
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gme_type_t type;
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gme_err_t err;
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uint8_t *song;
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Music_Emu *emu;
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type = gme_identify_extension(fmt);
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if (type == NULL)
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{
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return NULL;
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}
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emu = gme_new_emu(type, sample_rate);
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if (emu == nullptr)
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{
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return nullptr;
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}
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auto fpos = reader->tell();
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auto len = reader->filelength();
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song = new uint8_t[len];
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if (reader->read(song, len) != len)
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{
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delete[] song;
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gme_delete(emu);
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reader->seek(fpos, SEEK_SET);
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return nullptr;
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}
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err = gme_load_data(emu, song, (long)len);
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delete[] song;
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if (err != nullptr)
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{
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gme_delete(emu);
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throw std::runtime_error(err);
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}
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gme_set_stereo_depth(emu, std::min(std::max(miscConfig.gme_stereodepth, 0.f), 1.f));
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gme_set_fade(emu, -1); // Enable infinite loop
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#if GME_VERSION >= 0x602
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gme_set_autoload_playback_limit(emu, 0);
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#endif // GME_VERSION >= 0x602
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return new GMESong(emu, sample_rate);
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}
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//==========================================================================
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//
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// GMESong - Constructor
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//
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//==========================================================================
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GMESong::GMESong(Music_Emu *emu, int sample_rate)
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{
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Emu = emu;
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SampleRate = sample_rate;
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CurrTrack = 0;
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TrackInfo = NULL;
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}
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SoundStreamInfo GMESong::GetFormat()
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{
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return { 32*1024, SampleRate, -2 };
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}
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//==========================================================================
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//
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// GMESong - Destructor
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//
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//==========================================================================
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GMESong::~GMESong()
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{
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if (TrackInfo != NULL)
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{
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gme_free_info(TrackInfo);
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}
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if (Emu != NULL)
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{
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gme_delete(Emu);
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}
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}
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//==========================================================================
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//
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// GMESong :: GMEDepthChanged
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//
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//==========================================================================
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void GMESong::ChangeSettingNum(const char *name, double val)
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{
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if (Emu != nullptr && !stricmp(name, "gme.stereodepth"))
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{
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gme_set_stereo_depth(Emu, std::min(std::max(0., val), 1.));
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}
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}
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//==========================================================================
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//
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// GMESong :: Play
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//
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//==========================================================================
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bool GMESong::Start()
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{
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return StartTrack(CurrTrack);
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}
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//==========================================================================
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//
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// GMESong :: SetSubsong
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//
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//==========================================================================
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bool GMESong::SetSubsong(int track)
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{
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if (CurrTrack == track)
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{
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return true;
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}
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if (!started)
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{
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CurrTrack = track;
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return true;
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}
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return StartTrack(track);
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}
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//==========================================================================
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//
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// GMESong :: StartTrack
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//
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//==========================================================================
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bool GMESong::StartTrack(int track, bool getcritsec)
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{
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gme_err_t err;
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if (getcritsec)
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{
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err = gme_start_track(Emu, track);
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}
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else
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{
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err = gme_start_track(Emu, track);
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}
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if (err != NULL)
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{
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// This is called in the data reader thread which may not interact with the UI.
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// TBD: How to get the message across? An exception may not be used here!
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// Printf("Could not start track %d: %s\n", track, err);
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return false;
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}
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CurrTrack = track;
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started = true;
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GetTrackInfo();
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if (!m_Looping)
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{
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gme_set_fade(Emu, CalcSongLength());
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}
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return true;
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}
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//==========================================================================
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//
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// GMESong :: GetStats
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//
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//==========================================================================
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std::string GMESong::GetStats()
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{
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char out[80];
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if (TrackInfo != NULL)
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{
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int time = gme_tell(Emu);
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snprintf(out, 80,
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"Track: %d Time: %3d:%02d:%03d System: %s",
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CurrTrack,
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time/60000,
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(time/1000) % 60,
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time % 1000,
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TrackInfo->system);
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}
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return out;
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}
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//==========================================================================
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//
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// GMESong :: GetTrackInfo
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//
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//==========================================================================
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bool GMESong::GetTrackInfo()
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{
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gme_err_t err;
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if (TrackInfo != NULL)
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{
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gme_free_info(TrackInfo);
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TrackInfo = NULL;
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}
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err = gme_track_info(Emu, &TrackInfo, CurrTrack);
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if (err != NULL)
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{
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// This is called in the data reader thread which may not interact with the UI.
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// TBD: How to get the message across? An exception may not be used here!
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//Printf("Could not get track %d info: %s\n", CurrTrack, err);
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return false;
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}
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return true;
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}
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//==========================================================================
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//
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// GMESong :: CalcSongLength
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//
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//==========================================================================
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int GMESong::CalcSongLength()
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{
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if (TrackInfo == NULL)
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{
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return 150000;
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}
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if (TrackInfo->length > 0)
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{
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return TrackInfo->length;
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}
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if (TrackInfo->loop_length > 0)
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{
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return TrackInfo->intro_length + TrackInfo->loop_length * 2;
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}
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return 150000;
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}
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//==========================================================================
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//
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// GMESong :: Read STATIC
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//
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//==========================================================================
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bool GMESong::GetData(void *buffer, size_t len)
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{
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gme_err_t err;
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if (gme_track_ended(Emu))
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{
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if (m_Looping)
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{
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StartTrack(CurrTrack, false);
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}
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else
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{
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memset(buffer, 0, len);
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return false;
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}
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}
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err = gme_play(Emu, int(len >> 1), (short *)buffer);
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return (err == NULL);
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}
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