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(svn r15886) -Fix [FS#2770]: libtimidity cannot handle frees of NULL (in contrast of most other frees)

This commit is contained in:
rubidium 2009-03-29 10:52:54 +00:00
parent 9d2738b9c4
commit a4139d5693
1 changed files with 8 additions and 7 deletions
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15
src/music/libtimidity.cpp
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@ -50,6 +50,7 @@ static FMusicDriver_LibTimidity iFMusicDriver_LibTimidity;
const char *MusicDriver_LibTimidity::Start(const char * const *param)
{
_midi.status = MIDI_STOPPED;
_midi.song = NULL;
if (mid_init(param == NULL ? NULL : (char *)param[0]) < 0) {
/* If init fails, it can be because no configuration was found.
@ -81,15 +82,14 @@ const char *MusicDriver_LibTimidity::Start(const char * const *param)
void MusicDriver_LibTimidity::Stop()
{
if (_midi.status == MIDI_PLAYING) {
_midi.status = MIDI_STOPPED;
mid_song_free(_midi.song);
}
if (_midi.status == MIDI_PLAYING) this->StopSong();
mid_exit();
}
void MusicDriver_LibTimidity::PlaySong(const char *filename)
{
this->StopSong();
_midi.stream = mid_istream_open_file(filename);
if (_midi.stream == NULL) {
DEBUG(driver, 0, "Could not open music file");
@ -112,7 +112,9 @@ void MusicDriver_LibTimidity::PlaySong(const char *filename)
void MusicDriver_LibTimidity::StopSong()
{
_midi.status = MIDI_STOPPED;
mid_song_free(_midi.song);
/* mid_song_free cannot handle NULL! */
if (_midi.song != NULL) mid_song_free(_midi.song);
_midi.song = NULL;
}
bool MusicDriver_LibTimidity::IsSongPlaying()
@ -130,6 +132,5 @@ bool MusicDriver_LibTimidity::IsSongPlaying()
void MusicDriver_LibTimidity::SetVolume(byte vol)
{
if (_midi.song != NULL)
mid_song_set_volume(_midi.song, vol);
if (_midi.song != NULL) mid_song_set_volume(_midi.song, vol);
}