src/music/os2_m.cpp

   1 /*
   2  * This file is part of OpenTTD.
   3  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
   4  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   5  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
   6  */
   7
   8 /** @file os2_m.cpp Music playback on OS/2. */
   9
  10 #include "../stdafx.h"
  11 #include "../openttd.h"
  12 #include "os2_m.h"
  13 #include "midifile.hpp"
  14 #include "../base_media_base.h"
  15
  16 #define INCL_DOS
  17 #define INCL_OS2MM
  18 #define INCL_WIN
  19
  20 #include <stdarg.h>
  21 #include <os2.h>
  22 #include <os2me.h>
  23
  24 #include "../safeguards.h"
  25
  26 /**********************
  27  * OS/2 MIDI PLAYER
  28  **********************/
  29
  30 /* Interesting how similar the MCI API in OS/2 is to the Win32 MCI API,
  31  * eh? Anyone would think they both came from the same place originally! ;)
  32  */
  33
  34 /**
  35  * Send a midi command.
  36  * @param cmd The command to send.
  37  * @return The result of sending it.
  38  */
  39 static long CDECL MidiSendCommand(const char *cmd, ...)
  40 {
  41         va_list va;
  42         char buf[512];
  43         va_start(va, cmd);
  44         vseprintf(buf, lastof(buf), cmd, va);
  45         va_end(va);
  46         return mciSendString(buf, nullptr, 0, nullptr, 0);
  47 }
  48
  49 /** OS/2's music player's factory. */
  50 static FMusicDriver_OS2 iFMusicDriver_OS2;
  51
  52 void MusicDriver_OS2::PlaySong(const MusicSongInfo &song)
  53 {
  54         std::string filename = MidiFile::GetSMFFile(song);
  55
  56         MidiSendCommand("close all");
  57         if (filename.empty()) return;
  58
  59         if (MidiSendCommand("open %s type sequencer alias song", filename.c_str()) != 0) {
  60                 return;
  61         }
  62
  63         MidiSendCommand("play song from 0");
  64 }
  65
  66 void MusicDriver_OS2::StopSong()
  67 {
  68         MidiSendCommand("close all");
  69 }
  70
  71 void MusicDriver_OS2::SetVolume(byte vol)
  72 {
  73         MidiSendCommand("set song audio volume %d", ((vol/127)*100));
  74 }
  75
  76 bool MusicDriver_OS2::IsSongPlaying()
  77 {
  78         char buf[16];
  79         mciSendString("status song mode", buf, sizeof(buf), nullptr, 0);
  80         return strcmp(buf, "playing") == 0 || strcmp(buf, "seeking") == 0;
  81 }
  82
  83 const char *MusicDriver_OS2::Start(const StringList &parm)
  84 {
  85         return 0;
  86 }
  87
  88 void MusicDriver_OS2::Stop()
  89 {
  90         MidiSendCommand("close all");
  91 }