134 lines
3.0 KiB
C++
134 lines
3.0 KiB
C++
/* $Id$ */
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#include "../stdafx.h"
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#include "../openttd.h"
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#include "../sound_type.h"
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#include "../variables.h"
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#include "../debug.h"
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#include "libtimidity.h"
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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#include <signal.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <timidity.h>
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#if defined(PSP)
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#include <pspaudiolib.h>
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#endif /* PSP */
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enum MidiState {
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MIDI_STOPPED = 0,
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MIDI_PLAYING = 1,
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};
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static struct {
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MidIStream *stream;
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MidSongOptions options;
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MidSong *song;
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MidiState status;
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uint32 song_length;
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uint32 song_position;
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} _midi;
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#if defined(PSP)
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static void AudioOutCallback(void *buf, unsigned int _reqn, void *userdata)
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{
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memset(buf, 0, _reqn * PSP_NUM_AUDIO_CHANNELS);
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if (_midi.status == MIDI_PLAYING) {
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mid_song_read_wave(_midi.song, buf, _reqn * PSP_NUM_AUDIO_CHANNELS);
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}
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}
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#endif /* PSP */
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static FMusicDriver_LibTimidity iFMusicDriver_LibTimidity;
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const char *MusicDriver_LibTimidity::Start(const char *const *param)
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{
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_midi.status = MIDI_STOPPED;
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if (mid_init(param == NULL ? NULL : (char *)param[0]) < 0) {
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/* If init fails, it can be because no configuration was found.
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* If it was not forced via param, try to load it without a
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* configuration. Who knows that works. */
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if (param != NULL || mid_init_no_config() < 0) {
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return "error initializing timidity";
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}
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}
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DEBUG(driver, 1, "successfully initialised timidity");
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_midi.options.rate = 44100;
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_midi.options.format = MID_AUDIO_S16LSB;
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_midi.options.channels = 2;
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#if defined(PSP)
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_midi.options.buffer_size = PSP_NUM_AUDIO_SAMPLES;
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#else
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_midi.options.buffer_size = _midi.options.rate;
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#endif
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#if defined(PSP)
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pspAudioInit();
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pspAudioSetChannelCallback(_midi.options.channels, &AudioOutCallback, NULL);
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pspAudioSetVolume(_midi.options.channels, PSP_VOLUME_MAX, PSP_VOLUME_MAX);
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#endif /* PSP */
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return NULL;
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}
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void MusicDriver_LibTimidity::Stop()
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{
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if (_midi.status == MIDI_PLAYING) {
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_midi.status = MIDI_STOPPED;
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mid_song_free(_midi.song);
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}
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mid_exit();
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}
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void MusicDriver_LibTimidity::PlaySong(const char *filename)
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{
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_midi.stream = mid_istream_open_file(filename);
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if (_midi.stream == NULL) {
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DEBUG(driver, 0, "Could not open music file");
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return;
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}
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_midi.song = mid_song_load(_midi.stream, &_midi.options);
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mid_istream_close(_midi.stream);
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_midi.song_length = mid_song_get_total_time(_midi.song);
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if (_midi.song == NULL) {
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DEBUG(driver, 1, "Invalid MIDI file");
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return;
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}
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mid_song_start(_midi.song);
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_midi.status = MIDI_PLAYING;
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}
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void MusicDriver_LibTimidity::StopSong()
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{
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_midi.status = MIDI_STOPPED;
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mid_song_free(_midi.song);
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}
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bool MusicDriver_LibTimidity::IsSongPlaying()
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{
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if (_midi.status == MIDI_PLAYING) {
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_midi.song_position = mid_song_get_time(_midi.song);
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if (_midi.song_position >= _midi.song_length) {
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_midi.status = MIDI_STOPPED;
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_midi.song_position = 0;
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}
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}
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return (_midi.status == MIDI_PLAYING);
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}
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void MusicDriver_LibTimidity::SetVolume(byte vol)
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{
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if (_midi.song != NULL)
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mid_song_set_volume(_midi.song, vol);
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}
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