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