410 lines
9.4 KiB
C
Executable File
410 lines
9.4 KiB
C
Executable File
/*
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* PortMixer
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* Mac OS 9 implementation
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*
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* Copyright (c) 2002
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*
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* Written by Dominic Mazzoni
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*
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* PortMixer is intended to work side-by-side with PortAudio,
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* the Portable Real-Time Audio Library by Ross Bencina and
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* Phil Burk.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files
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* (the "Software"), to deal in the Software without restriction,
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* including without limitation the rights to use, copy, modify, merge,
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* publish, distribute, sublicense, and/or sell copies of the Software,
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* and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* Any person wishing to distribute modifications to the Software is
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* requested to send the modifications to the original developer so that
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* they can be incorporated into the canonical version.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <stdlib.h>
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#include <string.h>
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#include "portaudio.h"
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#include "pa_host.h"
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#include "portmixer.h"
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#define PA_MAX_NUM_HOST_BUFFERS (16) /* Do not exceed!! */
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typedef struct MultiBuffer
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{
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char *buffers[PA_MAX_NUM_HOST_BUFFERS];
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int numBuffers;
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int nextWrite;
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int nextRead;
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}
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MultiBuffer;
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/* Define structure to contain all Macintosh specific data. */
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typedef struct PaHostSoundControl
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{
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UInt64 pahsc_EntryCount;
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double pahsc_InverseMicrosPerHostBuffer; /* 1/Microseconds of real-time audio per user buffer. */
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/* Use char instead of Boolean for atomic operation. */
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volatile char pahsc_IsRecording; /* Recording in progress. Set by foreground. Cleared by background. */
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volatile char pahsc_StopRecording; /* Signal sent to background. */
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volatile char pahsc_IfInsideCallback;
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/* Input */
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SPB pahsc_InputParams;
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SICompletionUPP pahsc_InputCompletionProc;
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MultiBuffer pahsc_InputMultiBuffer;
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int32 pahsc_BytesPerInputHostBuffer;
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int32 pahsc_InputRefNum;
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/* Output */
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CmpSoundHeader pahsc_SoundHeaders[PA_MAX_NUM_HOST_BUFFERS];
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int32 pahsc_BytesPerOutputHostBuffer;
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SndChannelPtr pahsc_Channel;
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SndCallBackUPP pahsc_OutputCompletionProc;
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int32 pahsc_NumOutsQueued;
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int32 pahsc_NumOutsPlayed;
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PaTimestamp pahsc_NumFramesDone;
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UInt64 pahsc_WhenFramesDoneIncremented;
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/* Init Time -------------- */
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int32 pahsc_NumHostBuffers;
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int32 pahsc_FramesPerHostBuffer;
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int32 pahsc_UserBuffersPerHostBuffer;
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int32 pahsc_MinFramesPerHostBuffer; /* Can vary depending on virtual memory usage. */
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}
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PaHostSoundControl;
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typedef struct PxSource
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{
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char name[256];
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} PxSource;
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typedef struct PxInfo
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{
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SPB *input;
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int32 inputRefNum;
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SndChannelPtr output;
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int32 numSources;
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PxSource *sources;
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} PxInfo;
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int Px_GetNumMixers( void *pa_stream )
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{
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return 0;
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}
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const char *Px_GetMixerName( void *pa_stream, int index )
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{
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return "Mac Sound Manager";
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}
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PxMixer *Px_OpenMixer( void *pa_stream, int index )
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{
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PxInfo *info;
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internalPortAudioStream *past;
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PaHostSoundControl *macInfo;
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OSErr err;
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int i, j;
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Handle h;
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unsigned char *data;
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info = (PxInfo *)malloc(sizeof(PxInfo));
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if (info == NULL)
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return NULL;
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past = (internalPortAudioStream *) pa_stream;
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macInfo = (PaHostSoundControl *) past->past_DeviceData;
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info->input = &macInfo->pahsc_InputParams;
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info->inputRefNum = macInfo->pahsc_InputRefNum;
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info->output = macInfo->pahsc_Channel;
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info->numSources = 0;
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info->sources = NULL;
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err = SPBGetDeviceInfo (info->inputRefNum, siInputSourceNames, &h);
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if (err)
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return (PxMixer *)info;
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HLock(h);
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HNoPurge(h);
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data = (unsigned char *)*h;
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info->numSources = ((short *)data)[0];
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if (info->numSources <= 0 || info->numSources > 50) {
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HUnlock(h);
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return (PxMixer *)info;
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}
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info->sources = (PxSource *)malloc(info->numSources * sizeof(PxSource));
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data += 2;
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for(i=0; i<info->numSources; i++) {
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int len = *data++;
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if (len > 63) {
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info->numSources = 0;
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free(info->sources);
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info->sources = NULL;
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HUnlock(h);
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return (PxMixer *)info;
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}
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for(j=0; j<len; j++)
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info->sources[i].name[j] = *data++;
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info->sources[i].name[len] = 0;
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}
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HUnlock(h);
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return (PxMixer *)info;
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}
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/*
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Px_CloseMixer() closes a mixer opened using Px_OpenMixer and frees any
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memory associated with it.
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*/
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void Px_CloseMixer(PxMixer *mixer)
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{
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PxInfo *info = (PxInfo *)mixer;
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if (info->sources)
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free(info->sources);
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free(info);
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}
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/*
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Master (output) volume
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*/
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PxVolume Px_GetMasterVolume( PxMixer *mixer )
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{
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PxInfo *info = (PxInfo *)mixer;
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return 0.0;
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}
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void Px_SetMasterVolume( PxMixer *mixer, PxVolume volume )
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{
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PxInfo *info = (PxInfo *)mixer;
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}
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/*
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PCM output volume
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*/
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int Px_SupportsPCMOutputVolume( PxMixer* mixer )
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{
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return 1 ;
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}
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PxVolume Px_GetPCMOutputVolume( PxMixer *mixer )
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{
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PxInfo *info = (PxInfo *)mixer;
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OSErr err;
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long packedVol;
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SndCommand cmd;
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cmd.cmd = getVolumeCmd;
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cmd.param1 = 0;
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cmd.param2 = (long)&packedVol;
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err = SndDoImmediate(info->output, &cmd);
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if (err)
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return 0.0;
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return ((packedVol & 0xFFFF) + ((packedVol & 0xFFFF0000) >> 16) / 2.0) / 256.0;
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}
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void Px_SetPCMOutputVolume( PxMixer *mixer, PxVolume volume )
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{
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PxInfo *info = (PxInfo *)mixer;
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OSErr err;
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long packedVol;
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SndCommand cmd;
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packedVol = (unsigned long)volume * 256.0;
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packedVol += (packedVol << 16);
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cmd.cmd = volumeCmd;
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cmd.param1 = 0;
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cmd.param2 = packedVol;
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err = SndDoImmediate(info->output, &cmd);
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}
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/*
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All output volumes
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*/
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int Px_GetNumOutputVolumes( PxMixer *mixer )
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{
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PxInfo *info = (PxInfo *)mixer;
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return 0;
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}
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const char *Px_GetOutputVolumeName( PxMixer *mixer, int i )
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{
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PxInfo *info = (PxInfo *)mixer;
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return NULL;
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}
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PxVolume Px_GetOutputVolume( PxMixer *mixer, int i )
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{
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PxInfo *info = (PxInfo *)mixer;
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return NULL;
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}
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void Px_SetOutputVolume( PxMixer *mixer, int i, PxVolume volume )
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{
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PxInfo *info = (PxInfo *)mixer;
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}
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/*
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Input sources
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*/
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int Px_GetNumInputSources( PxMixer *mixer )
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{
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PxInfo *info = (PxInfo *)mixer;
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return info->numSources;
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}
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const char *Px_GetInputSourceName( PxMixer *mixer, int i)
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{
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PxInfo *info = (PxInfo *)mixer;
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if (i >= 0 && i < info->numSources)
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return info->sources[i].name;
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else
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return "";
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}
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int Px_GetCurrentInputSource( PxMixer *mixer )
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{
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PxInfo *info = (PxInfo *)mixer;
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short selected;
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OSErr err;
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err = SPBGetDeviceInfo (info->inputRefNum, siInputSource, &selected);
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if (err)
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return 0;
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return selected - 1;
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}
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void Px_SetCurrentInputSource( PxMixer *mixer, int i )
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{
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PxInfo *info = (PxInfo *)mixer;
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short selected = i+1;
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OSErr err;
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err = SPBSetDeviceInfo (info->inputRefNum, siInputSource, &selected);
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}
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/*
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Input volume
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*/
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PxVolume Px_GetInputVolume( PxMixer *mixer )
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{
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PxInfo *info = (PxInfo *)mixer;
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Fixed fixedGain;
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PxVolume vol;
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OSErr err;
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if (info->input) {
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err = SPBGetDeviceInfo(info->inputRefNum, siInputGain, (Ptr)&fixedGain);
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if (err)
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return 0.0;
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vol = (fixedGain / 65536.0) - 0.5;
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return vol;
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}
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return 0.0;
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}
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void Px_SetInputVolume( PxMixer *mixer, PxVolume volume )
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{
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PxInfo *info = (PxInfo *)mixer;
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Fixed fixedGain;
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OSErr err;
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if (info->input) {
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fixedGain = (Fixed)((volume + 0.5) * 65536.0);
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err = SPBSetDeviceInfo(info->inputRefNum, siInputGain, (Ptr)&fixedGain);
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}
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}
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/*
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Balance
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*/
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int Px_SupportsOutputBalance( PxMixer *mixer )
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{
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return 0;
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}
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PxBalance Px_GetOutputBalance( PxMixer *mixer )
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{
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return 0.0;
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}
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void Px_SetOutputBalance( PxMixer *mixer, PxBalance balance )
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{
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}
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/*
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Playthrough
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*/
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int Px_SupportsPlaythrough( PxMixer *mixer )
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{
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PxInfo *info = (PxInfo *)mixer;
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return (info->input != NULL);
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}
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PxVolume Px_GetPlaythrough( PxMixer *mixer )
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{
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PxInfo *info = (PxInfo *)mixer;
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OSErr err;
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short level;
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err = SPBGetDeviceInfo(info->inputRefNum, siPlayThruOnOff, (Ptr)&level);
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if (err)
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return 0.0;
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if (level < 0)
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level = 0;
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if (level > 7)
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level = 7;
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return (PxVolume)(level / 7.0);
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}
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void Px_SetPlaythrough( PxMixer *mixer, PxVolume volume )
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{
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PxInfo *info = (PxInfo *)mixer;
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OSErr err;
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short level = (int)(volume * 7.0 + 0.5);
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err = SPBSetDeviceInfo(info->inputRefNum, siPlayThruOnOff, (Ptr)&level);
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}
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