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Fix the sound crack problem in v9
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@ -9,6 +9,14 @@
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TODO: Handle Run/Stop in virtual keyboard (?)
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version 10:
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* Use 32KHz sound samplerate. This fixes much of the cracking sound
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problems from v9. It also allows sound to be transferred via the network
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to both Linux/Wii (sharing the same sample rate) and lowering the
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network transfer rate.
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-- Simon Kagstrom <simon.kagstrom@gmail.com>,
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version 9:
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* Fix a buffer overflow in the network status string...
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@ -279,10 +279,8 @@ void MOS6581::SetState(MOS6581State *ss)
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#if defined(AMIGA) || defined(__riscos__)
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const uint32 SAMPLE_FREQ = 22050; // Sample output frequency in Hz
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#elif defined(GEKKO)
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const uint32 SAMPLE_FREQ = 48000;
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#else
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const uint32 SAMPLE_FREQ = 44100; // Sample output frequency in Hz
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const uint32 SAMPLE_FREQ = 32000; // Sample output frequency in Hz
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#endif
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const uint32 SID_FREQ = 985248; // SID frequency in Hz
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const uint32 CALC_FREQ = 50; // Frequency at which calc_buffer is called in Hz (should be 50Hz)
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@ -70,11 +70,11 @@ void DigitalRenderer::init_sound(void)
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ioctl(devfd, SNDCTL_DSP_SETFRAGMENT, &arg);
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arg = 0;
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ioctl(devfd, SNDCTL_DSP_STEREO, &arg);
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arg = 44100;
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arg = 32000;
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ioctl(devfd, SNDCTL_DSP_SPEED, &arg);
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ioctl(devfd, SOUND_PCM_READ_RATE, &arg);
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if (arg < 43000 || arg > 45000)
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return;
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//if (arg < 43000 || arg > 45000)
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// return;
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ioctl(devfd, SNDCTL_DSP_GETBLKSIZE, &sndbufsize);
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sound_buffer = new int16[sndbufsize];
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@ -13,7 +13,7 @@
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#include <gccore.h>
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#include <string.h>
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#define SAMPLERATE 48000
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#define SAMPLERATE 32000
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#define MIXBUFSIZE_BYTES 16000
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#define MIXBUFSIZE_SHORT (MIXBUFSIZE_BYTES / 2)
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@ -90,7 +90,7 @@ static void AudioSwitchBuffers()
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void InitialiseAudio()
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{
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AUDIO_Init(NULL); // Start audio subsystem
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AUDIO_SetDSPSampleRate(AI_SAMPLERATE_48KHZ);
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AUDIO_SetDSPSampleRate(AI_SAMPLERATE_32KHZ);
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AUDIO_RegisterDMACallback( AudioSwitchBuffers );
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memset(soundbuffer, 0, SOUNDBUFSIZE*2);
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memset(mixbuffer, 0, MIXBUFSIZE_BYTES);
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