OpenTTD
os2_m.cpp
Go to the documentation of this file.
1 /* $Id: os2_m.cpp 26482 2014-04-23 20:13:33Z rubidium $ */
2 
3 /*
4  * This file is part of OpenTTD.
5  * 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.
6  * 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.
7  * 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/>.
8  */
9 
12 #include "../stdafx.h"
13 #include "../openttd.h"
14 #include "os2_m.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 
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, NULL, 0, NULL, 0);
47 }
48 
51 
52 void MusicDriver_OS2::PlaySong(const char *filename)
53 {
54  MidiSendCommand("close all");
55 
56  if (MidiSendCommand("open %s type sequencer alias song", filename) != 0) {
57  return;
58  }
59 
60  MidiSendCommand("play song from 0");
61 }
62 
64 {
65  MidiSendCommand("close all");
66 }
67 
69 {
70  MidiSendCommand("set song audio volume %d", ((vol/127)*100));
71 }
72 
74 {
75  char buf[16];
76  mciSendString("status song mode", buf, sizeof(buf), NULL, 0);
77  return strcmp(buf, "playing") == 0 || strcmp(buf, "seeking") == 0;
78 }
79 
80 const char *MusicDriver_OS2::Start(const char * const *parm)
81 {
82  return 0;
83 }
84 
86 {
87  MidiSendCommand("close all");
88 }
Base for OS2 music playback.
int CDECL vseprintf(char *str, const char *last, const char *format, va_list ap)
Safer implementation of vsnprintf; same as vsnprintf except:
Definition: string.cpp:50
#define lastof(x)
Get the last element of an fixed size array.
Definition: depend.cpp:50
Factory for OS/2&#39;s music player.
Definition: os2_m.h:35
void PlaySong(const char *filename)
Play a particular song.
Definition: os2_m.cpp:52
bool IsSongPlaying()
Are we currently playing a song?
Definition: os2_m.cpp:73
const char * Start(const char *const *param)
Start this driver.
Definition: os2_m.cpp:80
static long CDECL MidiSendCommand(const char *cmd,...)
Send a midi command.
Definition: os2_m.cpp:39
void Stop()
Stop this driver.
Definition: os2_m.cpp:85
void StopSong()
Stop playing the current song.
Definition: os2_m.cpp:63
void SetVolume(byte vol)
Set the volume, if possible.
Definition: os2_m.cpp:68
static FMusicDriver_OS2 iFMusicDriver_OS2
OS/2&#39;s music player&#39;s factory.
Definition: os2_m.cpp:50