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/* |
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* audio.cpp - Audio support |
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* |
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* Basilisk II (C) 1997-2000 Christian Bauer |
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* Basilisk II (C) 1997-2001 Christian Bauer |
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* Portions (C) 1997-1999 Marc Hellwig |
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* |
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* This program is free software; you can redistribute it and/or modify |
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#include "debug.h" |
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// Supported sample rates, sizes and channels |
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vector<uint32> audio_sample_rates; |
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vector<uint16> audio_sample_sizes; |
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vector<uint16> audio_channel_counts; |
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// Global variables |
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struct audio_status AudioStatus; // Current audio status (sample rate etc.) |
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bool audio_open = false; // Flag: audio is initialized and ready |
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break; |
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case siSampleSizeAvailable: { |
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r.d[0] = audio_num_sample_sizes * 2; |
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r.d[0] = audio_sample_sizes.size() * 2; |
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Execute68kTrap(0xa122, &r); // NewHandle() |
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uint32 h = r.a[0]; |
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if (h == 0) |
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return memFullErr; |
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WriteMacInt16(infoPtr + sil_count, audio_num_sample_sizes); |
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WriteMacInt16(infoPtr + sil_count, audio_sample_sizes.size()); |
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WriteMacInt32(infoPtr + sil_infoHandle, h); |
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uint32 sp = ReadMacInt32(h); |
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for (i=0; i<audio_num_sample_sizes; i++) |
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for (i=0; i<audio_sample_sizes.size(); i++) |
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WriteMacInt16(sp + i*2, audio_sample_sizes[i]); |
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break; |
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} |
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break; |
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case siChannelAvailable: { |
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r.d[0] = audio_num_channel_counts * 2; |
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r.d[0] = audio_channel_counts.size() * 2; |
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Execute68kTrap(0xa122, &r); // NewHandle() |
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uint32 h = r.a[0]; |
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if (h == 0) |
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return memFullErr; |
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WriteMacInt16(infoPtr + sil_count, audio_num_channel_counts); |
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WriteMacInt16(infoPtr + sil_count, audio_channel_counts.size()); |
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WriteMacInt32(infoPtr + sil_infoHandle, h); |
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uint32 sp = ReadMacInt32(h); |
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for (i=0; i<audio_num_channel_counts; i++) |
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for (i=0; i<audio_channel_counts.size(); i++) |
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WriteMacInt16(sp + i*2, audio_channel_counts[i]); |
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break; |
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} |
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break; |
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case siSampleRateAvailable: { |
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r.d[0] = audio_num_sample_rates * 4; |
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r.d[0] = audio_sample_rates.size() * 4; |
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Execute68kTrap(0xa122, &r); // NewHandle() |
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uint32 h = r.a[0]; |
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if (h == 0) |
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return memFullErr; |
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WriteMacInt16(infoPtr + sil_count, audio_num_sample_rates); |
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WriteMacInt16(infoPtr + sil_count, audio_sample_rates.size()); |
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WriteMacInt32(infoPtr + sil_infoHandle, h); |
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uint32 lp = ReadMacInt32(h); |
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for (i=0; i<audio_num_sample_rates; i++) |
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for (i=0; i<audio_sample_rates.size(); i++) |
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WriteMacInt32(lp + i*4, audio_sample_rates[i]); |
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break; |
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} |
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D(bug(" set sample size %08lx\n", infoPtr)); |
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if (AudioStatus.num_sources) |
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return siDeviceBusyErr; |
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for (i=0; i<audio_num_sample_sizes; i++) |
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if (infoPtr == AudioStatus.sample_size) |
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return noErr; |
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for (i=0; i<audio_sample_sizes.size(); i++) |
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if (audio_sample_sizes[i] == infoPtr) { |
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audio_set_sample_size(i); |
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return noErr; |
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if (audio_set_sample_size(i)) |
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return noErr; |
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else |
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return siInvalidSampleSize; |
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} |
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return siInvalidSampleSize; |
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D(bug(" set sample rate %08lx\n", infoPtr)); |
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if (AudioStatus.num_sources) |
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return siDeviceBusyErr; |
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for (i=0; i<audio_num_sample_rates; i++) |
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if (infoPtr == AudioStatus.sample_rate) |
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return noErr; |
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for (i=0; i<audio_sample_rates.size(); i++) |
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if (audio_sample_rates[i] == infoPtr) { |
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audio_set_sample_rate(i); |
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return noErr; |
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if (audio_set_sample_rate(i)) |
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return noErr; |
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else |
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return siInvalidSampleRate; |
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} |
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return siInvalidSampleRate; |
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D(bug(" set number of channels %08lx\n", infoPtr)); |
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if (AudioStatus.num_sources) |
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return siDeviceBusyErr; |
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for (i=0; i<audio_num_channel_counts; i++) |
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if (infoPtr == AudioStatus.channels) |
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return noErr; |
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for (i=0; i<audio_channel_counts.size(); i++) |
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if (audio_channel_counts[i] == infoPtr) { |
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audio_set_channels(i); |
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return noErr; |
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if (audio_set_channels(i)) |
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return noErr; |
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else |
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return badChannel; |
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} |
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return badChannel; |
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