int msdos_init_sound(int *rate, int card)
{
int i;
seal_sample_rate = *rate;
seal_sound_card = card;
if (AInitialize() != AUDIO_ERROR_NONE)
return 1;
/* Ask the user if no sound card was chosen */
if (seal_sound_card == -1)
{
unsigned int k;
printf("\n SELECT YOUR AUDIO DEVICE :\n\n"
" AWE32/64 playback requires onboard DRAM,\n"
" Sound Blaster playback is the most compatible & better for emulation\n\n");
for (k = 0;k < AGetAudioNumDevs();k++)
{
if (AGetAudioDevCaps(k,&caps) == AUDIO_ERROR_NONE)
printf(" %2d. %s\n",k,caps.szProductName);
}
printf("\n");
if (k < 10)
{
i = getch();
seal_sound_card = i - '0';
}
else
scanf("%d",&seal_sound_card);
}
/* initialize SEAL audio library */
if (seal_sound_card == 0) /* silence */
{
/* update the Machine structure to show that sound is disabled */
seal_sample_rate = 0;
exit(0);
return 0;
}
/* open audio device */
/* info.nDeviceId = AUDIO_DEVICE_MAPPER;*/
info.nDeviceId = seal_sound_card;
/* always use 16 bit mixing if possible - better quality and same speed of 8 bit */
info.wFormat = AUDIO_FORMAT_16BITS | AUDIO_FORMAT_STEREO | AUDIO_FORMAT_RAW_SAMPLE;
info.nSampleRate = seal_sample_rate;
if (AOpenAudio(&info) != AUDIO_ERROR_NONE)
{
return (1);
}
AGetAudioDevCaps(info.nDeviceId,&caps);
printf("Using `%s' at %d-bit %s %u Hz\n",
caps.szProductName,
info.wFormat & AUDIO_FORMAT_16BITS ? 16 : 8,
info.wFormat & AUDIO_FORMAT_STEREO ? "stereo" : "mono",
info.nSampleRate);
/* open and allocate voices, allocate waveforms */
if (AOpenVoices(NUMVOICES) != AUDIO_ERROR_NONE)
{
printf("voices initialization failed\n");
return 1;
}
for (i = 0; i < NUMVOICES; i++)
{
if (ACreateAudioVoice(&hVoice[i]) != AUDIO_ERROR_NONE)
{
printf("voice #%d creation failed\n",i);
return 1;
}
ASetVoicePanning(hVoice[i],128);
lpWave[i] = 0;
}
/* update the Machine structure to reflect the actual sample rate */
*rate = seal_sample_rate = info.nSampleRate;
{
uclock_t a,b;
LONG start,end;
if ((lpWave[0] = (LPAUDIOWAVE)malloc(sizeof(AUDIOWAVE))) == 0)
return 1;
lpWave[0]->wFormat = AUDIO_FORMAT_8BITS | AUDIO_FORMAT_MONO;
lpWave[0]->nSampleRate = seal_sample_rate;
lpWave[0]->dwLength = 3*seal_sample_rate;
lpWave[0]->dwLoopStart = 0;
lpWave[0]->dwLoopEnd = 3*seal_sample_rate;
if (ACreateAudioData(lpWave[0]) != AUDIO_ERROR_NONE)
{
free(lpWave[0]);
lpWave[0] = 0;
return 1;
}
memset(lpWave[0]->lpData,0,3*seal_sample_rate);
/* upload the data to the audio DRAM local memory */
AWriteAudioData(lpWave[0],0,3*seal_sample_rate);
APrimeVoice(hVoice[0],lpWave[0]);
ASetVoiceFrequency(hVoice[0],seal_sample_rate);
ASetVoiceVolume(hVoice[0],0);
AStartVoice(hVoice[0]);
a = uclock();
/* wait some time to let everything stabilize */
do
{
osd_update_audio();
b = uclock();
} while (b-a < UCLOCKS_PER_SEC/10);
a = uclock();
AGetVoicePosition(hVoice[0],&start);
do
{
osd_update_audio();
b = uclock();
} while (b-a < UCLOCKS_PER_SEC);
AGetVoicePosition(hVoice[0],&end);
nominal_sample_rate = seal_sample_rate;
seal_sample_rate = end - start;
AStopVoice(hVoice[0]);
ADestroyAudioData(lpWave[0]);
free(lpWave[0]);
lpWave[0] = 0;
}
osd_set_mastervolume(0); /* start at maximum volume */
return 0;
}
int msdos_init_sound(void)
{
#ifdef USE_SEAL
int i;
/* Ask the user if no soundcard was chosen */
if (soundcard == -1)
{
unsigned int k;
printf("\nSelect the audio device:\n");
for (k = 0;k < AGetAudioNumDevs();k++)
{
/* don't show the AWE32, it's too slow, users must choose Sound Blaster */
if (AGetAudioDevCaps(k,&caps) == AUDIO_ERROR_NONE &&
strcmp(caps.szProductName,"Sound Blaster AWE32"))
printf(" %2d. %s\n",k,caps.szProductName);
}
printf("\n");
if (k < 10)
{
i = getch();
soundcard = i - '0';
}
else
scanf("%d",&soundcard);
}
/* initialize SEAL audio library */
if (soundcard == 0) /* silence */
{
/* update the Machine structure to show that sound is disabled */
Machine->sample_rate = 0;
return 0;
}
/* open audio device */
/* info.nDeviceId = AUDIO_DEVICE_MAPPER;*/
info.nDeviceId = soundcard;
/* always use 16 bit mixing if possible - better quality and same speed of 8 bit */
info.wFormat = AUDIO_FORMAT_16BITS | AUDIO_FORMAT_MONO | AUDIO_FORMAT_RAW_SAMPLE;
/* use stereo output if supported */
if (usestereo)
{
if (Machine->drv->sound_attributes & SOUND_SUPPORTS_STEREO)
info.wFormat = AUDIO_FORMAT_16BITS | AUDIO_FORMAT_STEREO | AUDIO_FORMAT_RAW_SAMPLE;
}
info.nSampleRate = Machine->sample_rate;
if (AOpenAudio(&info) != AUDIO_ERROR_NONE)
{
printf("audio initialization failed\n");
return 1;
}
AGetAudioDevCaps(info.nDeviceId,&caps);
logerror("Using %s at %d-bit %s %u Hz\n",
caps.szProductName,
info.wFormat & AUDIO_FORMAT_16BITS ? 16 : 8,
info.wFormat & AUDIO_FORMAT_STEREO ? "stereo" : "mono",
info.nSampleRate);
/* open and allocate voices, allocate waveforms */
if (AOpenVoices(SOUND_CHANNELS) != AUDIO_ERROR_NONE)
{
printf("voices initialization failed\n");
return 1;
}
for (i = 0; i < SOUND_CHANNELS; i++)
{
lpWave[i] = 0;
}
stream_playing = 0;
stream_cache_data = 0;
stream_cache_len = 0;
stream_cache_stereo = 0;
/* update the Machine structure to reflect the actual sample rate */
Machine->sample_rate = info.nSampleRate;
logerror("set sample rate: %d\n",Machine->sample_rate);
if (sampleratedetect)
{
TICKER a,b;
LONG start,end;
if (ACreateAudioVoice(&hVoice[0]) != AUDIO_ERROR_NONE)
return 1;
if ((lpWave[0] = (LPAUDIOWAVE)malloc(sizeof(AUDIOWAVE))) == 0)
{
ADestroyAudioVoice(hVoice[0]);
return 1;
}
lpWave[0]->wFormat = AUDIO_FORMAT_8BITS | AUDIO_FORMAT_MONO;
lpWave[0]->nSampleRate = Machine->sample_rate;
lpWave[0]->dwLength = 3*Machine->sample_rate;
lpWave[0]->dwLoopStart = 0;
lpWave[0]->dwLoopEnd = 3*Machine->sample_rate;
if (ACreateAudioData(lpWave[0]) != AUDIO_ERROR_NONE)
{
free(lpWave[0]);
lpWave[0] = 0;
return 1;
}
memset(lpWave[0]->lpData,0,3*Machine->sample_rate);
/* upload the data to the audio DRAM local memory */
AWriteAudioData(lpWave[0],0,3*Machine->sample_rate);
APrimeVoice(hVoice[0],lpWave[0]);
ASetVoiceFrequency(hVoice[0],Machine->sample_rate);
ASetVoiceVolume(hVoice[0],0);
AStartVoice(hVoice[0]);
a = ticker();
/* wait some time to let everything stabilize */
do
{
AUpdateAudioEx(Machine->sample_rate / Machine->drv->frames_per_second);
b = ticker();
} while (b-a < TICKS_PER_SEC/10);
a = ticker();
AGetVoicePosition(hVoice[0],&start);
do
{
AUpdateAudioEx(Machine->sample_rate / Machine->drv->frames_per_second);
b = ticker();
} while (b-a < TICKS_PER_SEC);
AGetVoicePosition(hVoice[0],&end);
nominal_sample_rate = Machine->sample_rate;
Machine->sample_rate = end - start;
logerror("actual sample rate: %d\n",Machine->sample_rate);
AStopVoice(hVoice[0]);
ADestroyAudioData(lpWave[0]);
free(lpWave[0]);
lpWave[0] = 0;
ADestroyAudioVoice(hVoice[0]);
}
else
nominal_sample_rate = Machine->sample_rate;
#if 0
{
char *blaster_env;
/* Get Soundblaster base address from environment variabler BLASTER */
/* Soundblaster OPL base port, at some compatibles this must be 0x388 */
if(!getenv("BLASTER"))
{
printf("\nBLASTER variable not found, disabling fm sound!\n");
No_OPL = options.no_fm = 1;
}
else
{
blaster_env = getenv("BLASTER");
BaseSb = i = 0;
while ((blaster_env[i] & 0x5f) != 0x41) i++; /* Look for 'A' char */
while (blaster_env[++i] != 0x20) {
BaseSb = (BaseSb << 4) + (blaster_env[i]-0x30);
}
}
}
#endif
#endif
#ifdef USE_ALLEGRO
reserve_voices(1,0);
if (install_sound(DIGI_AUTODETECT,MIDI_NONE,0) != 0)
{
logerror("Allegro install_sound error: %s\n",allegro_error);
return 1;
}
nominal_sample_rate = Machine->sample_rate;
#endif
num_used_opl = 0;
osd_set_mastervolume(attenuation); /* set the startup volume */
return 0;
}
void playstreamedsample(int channel,signed char *data,int len,int freq,int volume,int pan,int bits)
{
static int playing[NUMVOICES];
static int c[NUMVOICES];
/* backwards compatibility with old 0-255 volume range */
if (volume > 100) volume = volume * 25 / 255;
if (seal_sample_rate == 0 || channel >= NUMVOICES) return;
if (!playing[channel])
{
if (lpWave[channel])
{
AStopVoice(hVoice[channel]);
ADestroyAudioData(lpWave[channel]);
free(lpWave[channel]);
lpWave[channel] = 0;
}
if ((lpWave[channel] = (LPAUDIOWAVE)malloc(sizeof(AUDIOWAVE))) == 0)
return;
lpWave[channel]->wFormat = (bits == 8 ? AUDIO_FORMAT_8BITS : AUDIO_FORMAT_16BITS)
| AUDIO_FORMAT_MONO | AUDIO_FORMAT_LOOP;
lpWave[channel]->nSampleRate = nominal_sample_rate;
lpWave[channel]->dwLength = 3*len;
lpWave[channel]->dwLoopStart = 0;
lpWave[channel]->dwLoopEnd = 3*len;
if (ACreateAudioData(lpWave[channel]) != AUDIO_ERROR_NONE)
{
free(lpWave[channel]);
lpWave[channel] = 0;
return;
}
memset(lpWave[channel]->lpData,0,3*len);
memcpy(lpWave[channel]->lpData,data,len);
/* upload the data to the audio DRAM local memory */
AWriteAudioData(lpWave[channel],0,3*len);
APrimeVoice(hVoice[channel],lpWave[channel]);
/* need to cast to double because freq*nominal_sample_rate can exceed the size of an int */
ASetVoiceFrequency(hVoice[channel],(double)freq*nominal_sample_rate/seal_sample_rate);
AStartVoice(hVoice[channel]);
playing[channel] = 1;
c[channel] = 1;
}
else
{
LONG pos;
for(;;)
{
AGetVoicePosition(hVoice[channel],&pos);
if (c[channel] == 0 && pos >= len) break;
if (c[channel] == 1 && (pos < len || pos >= 2*len)) break;
if (c[channel] == 2 && pos < 2*len) break;
osd_update_audio();
}
memcpy(&lpWave[channel]->lpData[len * c[channel]],data,len);
AWriteAudioData(lpWave[channel],len*c[channel],len);
c[channel]++;
if (c[channel] == 3) c[channel] = 0;
}
ASetVoiceVolume(hVoice[channel],volume * 64 / 100);
ASetVoicePanning(hVoice[channel],(pan + 100) * 255 / 200);
}
int osd_start_audio_stream(int stereo)
{
#ifdef USE_SEAL
int channel;
#endif
if (stereo) stereo = 1; /* make sure it's either 0 or 1 */
stream_cache_stereo = stereo;
/* determine the number of samples per frame */
samples_per_frame = (double)Machine->sample_rate / (double)Machine->drv->frames_per_second;
/* compute how many samples to generate this frame */
samples_left_over = samples_per_frame;
samples_this_frame = (UINT32)samples_left_over;
samples_left_over -= (double)samples_this_frame;
audio_buffer_length = NUM_BUFFERS * samples_per_frame + 20;
if (Machine->sample_rate == 0) return 0;
#ifdef USE_SEAL
for (channel = 0;channel <= stereo;channel++)
{
if (ACreateAudioVoice(&hVoice[channel]) != AUDIO_ERROR_NONE)
return 0;
if ((lpWave[channel] = (LPAUDIOWAVE)malloc(sizeof(AUDIOWAVE))) == 0)
{
ADestroyAudioVoice(hVoice[channel]);
return 0;
}
lpWave[channel]->wFormat = AUDIO_FORMAT_16BITS | AUDIO_FORMAT_MONO | AUDIO_FORMAT_LOOP;
lpWave[channel]->nSampleRate = nominal_sample_rate;
lpWave[channel]->dwLength = 2*audio_buffer_length;
lpWave[channel]->dwLoopStart = 0;
lpWave[channel]->dwLoopEnd = lpWave[channel]->dwLength;
if (ACreateAudioData(lpWave[channel]) != AUDIO_ERROR_NONE)
{
free(lpWave[channel]);
lpWave[channel] = 0;
return 0;
}
memset(lpWave[channel]->lpData,0,lpWave[channel]->dwLength);
APrimeVoice(hVoice[channel],lpWave[channel]);
ASetVoiceFrequency(hVoice[channel],nominal_sample_rate);
}
if (stereo)
{
/* SEAL doubles volume for panned channels, so we have to compensate */
ASetVoiceVolume(hVoice[0],32);
ASetVoiceVolume(hVoice[1],32);
ASetVoicePanning(hVoice[0],0);
ASetVoicePanning(hVoice[1],255);
AStartVoice(hVoice[0]);
AStartVoice(hVoice[1]);
}
else
{
ASetVoiceVolume(hVoice[0],64);
ASetVoicePanning(hVoice[0],128);
AStartVoice(hVoice[0]);
}
#endif
#ifdef USE_ALLEGRO
mysample = create_sample(16,stereo,nominal_sample_rate,audio_buffer_length);
if (mysample == 0) return 0;
myvoice = allocate_voice(mysample);
voice_set_playmode(myvoice,PLAYMODE_LOOP);
if (stereo)
{
INT16 *buf = mysample->data;
int p = 0;
while (p != audio_buffer_length)
{
buf[2*p] = (INT16)0x8000;
buf[2*p+1] = (INT16)0x8000;
p++;
}
}
else
{
INT16 *buf = mysample->data;
int p = 0;
while (p != audio_buffer_length)
{
buf[p] = (INT16)0x8000;
p++;
}
}
voice_start(myvoice);
#endif
stream_playing = 1;
voice_pos = 0;
return samples_this_frame;
}