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81632bcf5b
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gui/trunk@14212 72102866-910b-0410-8b05-ffd578937521
908 lines
46 KiB
C
908 lines
46 KiB
C
/*
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* PortAudio Portable Real-Time Audio Library
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* Latest Version at: http://www.portaudio.com
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* SGI IRIX implementation by Pieter Suurmond, september 22, 2001 (#0.18).
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*
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* Copyright (c) 1999-2001 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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Modfication History:
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8/12/2001 - Pieter Suurmond - took the v15 pa_linux_oss.c file and started to adapt for IRIX 6.2.
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8/17/2001 - alpha release with IRIX sproc()-method, may sometimes let IRIX6.2 crash at closing audiostream.
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9/22/2001 - #0.18 pthread starts to work a bit:
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BUT UNDER IRIX6.2, I DON'T GET IT TO WORK REALLY CORRECTLY,
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this POSIX-attempt,
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DON'T USE THIS FILE FOR RELIABLE OPERATION, IT IS HERE JUST
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FOR DOCUMENTATION/ARCHIVE... OR FOR ANYONE WHO WANTS TO FIX......
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TODO:
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- Test under IRIX 6.5.
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- Dynamically switch to 32 bit float as native format when appropriate (let SGI do the conversion),
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and maybe also the other natively supported formats? (might increase performance)
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- Not sure whether CPU UTILIZATION MEASUREMENT (from OSS/linux) really works. Changed nothing yet,
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seems ok, but I've not yet tested it thoroughly. (maybe utilization-code may be made _unix_common_ then?)
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- The minimal number of buffers setting... I do not yet fully understand it.. I now just take *4.
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REFERENCES:
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- IRIX 6.2 man pages regarding SGI AL library.
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- IRIS Digital MediaProgramming Guide (online books as well as man-pages come with IRIX 6.2 and
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may not be publically available on the internet).
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*/
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#include <stdio.h> /* Standard libraries. */
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#include <stdlib.h>
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#include "../pa_common/portaudio.h" /* Portaudio headers. */
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#include "../pa_common/pa_host.h"
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#include "../pa_common/pa_trace.h"
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/*
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#include <malloc.h>
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#include <memory.h>
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#include <sys/prctl.h> Not needed
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#include <sys/types.h>
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#include <sys/schedctl.h>
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#include <signal.h>
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#include <sys/ioctl.h> Needed?
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#include <sys/time.h>
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#include <sched.h> sched_param struct and related functions
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used in setting thread priorities.
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#include <limits.h> Some POSIX constants such as _POSIX_THREAD_THREADS_MAX
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*/
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#include <pthread.h> /* Pthreads are supported by IRIX 6.2 after */
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/* patches 1361, 1367, and 1429 are applied. */
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#include <fcntl.h> /* fcntl.h needed for "O_RDONLY". */
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#include <unistd.h> /* For usleep() and constants used when calling sysconf() */
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/* to query POSIX limits (see the sysconf(3) ref. page. */
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#include <dmedia/audio.h> /* SGI-specific audio library. */
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/*--------------------------------------------*/
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#define PRINT(x) { printf x; fflush(stdout); }
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#define ERR_RPT(x) PRINT(x)
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#define DBUG(x) PRINT(x)
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#define DBUGX(x) /* PRINT(x) */
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#define MAX_CHARS_DEVNAME (16) /* Was 32 in OSS (20 for AL but "in"/"out" is concat. */
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#define MAX_SAMPLE_RATES (8) /* Known from SGI AL there are 7 (was 10 in OSS v15). */
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typedef struct internalPortAudioDevice /* IRIX specific device info: */
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{
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PaDeviceID /* NEW: */ pad_DeviceID; /* THIS "ID" IS NEW HERE (Pieter)! */
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long pad_ALdevice; /* SGI-number! */
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double pad_SampleRates[MAX_SAMPLE_RATES]; /* for pointing to from pad_Info */
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char pad_DeviceName[MAX_CHARS_DEVNAME+1]; /* +1 for \0, one more than OSS. */
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PaDeviceInfo pad_Info; /* pad_Info (v15) contains: */
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/* int structVersion; */
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/* const char* name; */
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/* int maxInputChannels, maxOutputChannels; */
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/* int numSampleRates; Num rates, or -1 if range supprtd. */
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/* const double* sampleRates; Array of supported sample rates, */
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/* PaSampleFormat nativeSampleFormats; or {min,max} if range supported. */
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struct internalPortAudioDevice* pad_Next; /* Singly linked list, (NULL=end). */
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} internalPortAudioDevice;
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typedef struct PaHostSoundControl /* Structure to contain all SGI IRIX specific data. */
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{
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ALport pahsc_ALportIN, /* IRIX-audio-library-datatype. ALports can only be */
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pahsc_ALportOUT; /* unidirectional, so we sometimes need 2 of them. */
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pthread_t pahsc_ThreadPID;
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short *pahsc_NativeInputBuffer, /* Allocated here, in this file, if necessary. */
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*pahsc_NativeOutputBuffer;
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unsigned int pahsc_BytesPerInputBuffer, /* Native buffer sizes in bytes, really needed here */
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pahsc_BytesPerOutputBuffer; /* to free FAST memory, if buffs were alloctd FAST. */
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unsigned int pahsc_SamplesPerInputBuffer, /* These amounts are needed again and again in the */
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pahsc_SamplesPerOutputBuffer; /* audio-thread (don't need to be kept globally). */
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struct itimerval pahsc_EntryTime, /* For measuring CPU utilization (same as linux). */
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pahsc_LastExitTime;
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long pahsc_InsideCountSum,
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pahsc_TotalCountSum;
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} PaHostSoundControl;
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/*----------------------------- Shared Data ------------------------------------------------------*/
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static internalPortAudioDevice* sDeviceList = NULL; /* FIXME - put Mutex around this shared data. */
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static int sPaHostError = 0; /* Maybe more than one process writing errs!? */
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long Pa_GetHostError(void)
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{
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return (long)sPaHostError;
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}
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/*----------------------------- BEGIN CPU UTILIZATION MEASUREMENT -----------------*/
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/* (copied from source pa_linux_oss/pa_linux_oss.c) */
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static void Pa_StartUsageCalculation( internalPortAudioStream *past )
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{
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struct itimerval itimer;
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PaHostSoundControl *pahsc = (PaHostSoundControl *) past->past_DeviceData;
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if( pahsc == NULL ) return;
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/* Query system timer for usage analysis and to prevent overuse of CPU. */
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getitimer( ITIMER_REAL, &pahsc->pahsc_EntryTime );
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}
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static long SubtractTime_AminusB( struct itimerval *timeA, struct itimerval *timeB )
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{
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long secs = timeA->it_value.tv_sec - timeB->it_value.tv_sec;
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long usecs = secs * 1000000;
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usecs += (timeA->it_value.tv_usec - timeB->it_value.tv_usec);
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return usecs;
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}
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static void Pa_EndUsageCalculation( internalPortAudioStream *past )
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{
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struct itimerval currentTime;
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long insideCount;
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long totalCount; /* Measure CPU utilization during this callback. */
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#define LOWPASS_COEFFICIENT_0 (0.95)
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#define LOWPASS_COEFFICIENT_1 (0.99999 - LOWPASS_COEFFICIENT_0)
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PaHostSoundControl *pahsc = (PaHostSoundControl *) past->past_DeviceData;
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if (pahsc == NULL)
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return;
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if (getitimer( ITIMER_REAL, ¤tTime ) == 0 )
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{
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if (past->past_IfLastExitValid)
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{
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insideCount = SubtractTime_AminusB( &pahsc->pahsc_EntryTime, ¤tTime );
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pahsc->pahsc_InsideCountSum += insideCount;
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totalCount = SubtractTime_AminusB( &pahsc->pahsc_LastExitTime, ¤tTime );
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pahsc->pahsc_TotalCountSum += totalCount;
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/* DBUG(("insideCount = %d, totalCount = %d\n", insideCount, totalCount )); */
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/* Low pass filter the result because sometimes we get called several times in a row. */
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/* That can cause the TotalCount to be very low which can cause the usage to appear */
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/* unnaturally high. So we must filter numerator and denominator separately!!! */
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if (pahsc->pahsc_InsideCountSum > 0)
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{
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past->past_AverageInsideCount = ((LOWPASS_COEFFICIENT_0 * past->past_AverageInsideCount) +
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(LOWPASS_COEFFICIENT_1 * pahsc->pahsc_InsideCountSum));
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past->past_AverageTotalCount = ((LOWPASS_COEFFICIENT_0 * past->past_AverageTotalCount) +
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(LOWPASS_COEFFICIENT_1 * pahsc->pahsc_TotalCountSum));
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past->past_Usage = past->past_AverageInsideCount / past->past_AverageTotalCount;
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pahsc->pahsc_InsideCountSum = 0;
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pahsc->pahsc_TotalCountSum = 0;
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}
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}
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past->past_IfLastExitValid = 1;
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}
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pahsc->pahsc_LastExitTime.it_value.tv_sec = 100;
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pahsc->pahsc_LastExitTime.it_value.tv_usec = 0;
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setitimer( ITIMER_REAL, &pahsc->pahsc_LastExitTime, NULL );
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past->past_IfLastExitValid = 1;
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} /*----------- END OF CPU UTILIZATION CODE (from pa_linux_oss/pa_linux_oss.c v15)--------------------*/
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/*--------------------------------------------------------------------------------------*/
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PaError translateSGIerror(void) /* Calls oserror(), may be used after an SGI AL-library */
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{ /* call to report via ERR_RPT(), yields a PaError-num. */
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const char* a = "SGI AL "; /* (Not absolutely sure errno came from THIS thread! */
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switch(oserror()) /* Read IRIX man-pages about the _SGI_MP_SOURCE macro.) */
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{
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case AL_BAD_OUT_OF_MEM:
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ERR_RPT(("%sout of memory.\n", a));
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return paInsufficientMemory; /* Known PaError. */
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case AL_BAD_CONFIG:
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ERR_RPT(("%sconfiguration invalid or NULL.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_CHANNELS:
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ERR_RPT(("%schannels not 1,2 or 4.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_NO_PORTS:
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ERR_RPT(("%sout of audio ports.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_DEVICE:
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ERR_RPT(("%swrong device number.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_DEVICE_ACCESS:
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ERR_RPT(("%swrong device access.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_DIRECTION:
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ERR_RPT(("%sinvalid direction.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_SAMPFMT:
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ERR_RPT(("%sdoesn't accept sampleformat.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_FLOATMAX:
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ERR_RPT(("%smax float value is zero.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_WIDTH:
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ERR_RPT(("%sunsupported samplewidth.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_QSIZE:
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ERR_RPT(("%sinvalid queue size.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_PVBUFFER:
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ERR_RPT(("%sPVbuffer null.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_BUFFERLENGTH_NEG:
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ERR_RPT(("%snegative bufferlength.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_BUFFERLENGTH_ODD:
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ERR_RPT(("%sodd bufferlength.\n", a));
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return paHostError; /* Generic PaError. */
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case AL_BAD_PARAM:
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ERR_RPT(("%sparameter not valid for device.\n", a));
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return paHostError; /* Generic PaError. */
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default:
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ERR_RPT(("%sunknown error.\n", a));
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return paHostError; /* Generic PaError. */
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}
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}
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/*------------------------------------------------------------------------------------------*/
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/* Tries to set various rates and formats and fill in the device info structure. */
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static PaError Pa_sgiQueryDevice(long ALdev, /* (AL_DEFAULT_DEVICE) */
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PaDeviceID id, /* (DefaultI|ODeviceID()) */
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char* name, /* (for example "SGI AL") */
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internalPortAudioDevice* pad) /* Result written to pad. */
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{
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int format;
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long min, max; /* To catch hardware characteristics. */
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ALseterrorhandler(0); /* 0 = turn off the default error handler. */
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/*--------------------------------------------------------------------------------------*/
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pad->pad_ALdevice = ALdev; /* Set the AL device number. */
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pad->pad_DeviceID = id; /* Set the PA device number. */
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if (strlen(name) > MAX_CHARS_DEVNAME) /* MAX_CHARS defined above. */
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{
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ERR_RPT(("Pa_QueryDevice(): name too long (%s).\n", name));
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return paHostError;
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}
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strcpy(pad->pad_DeviceName, name); /* Write name-string. */
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pad->pad_Info.name = pad->pad_DeviceName; /* Set pointer,..hmmm. */
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/*--------------------------------- natively supported sample formats: -----------------*/
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pad->pad_Info.nativeSampleFormats = paInt16; /* Later also include paFloat32 | ..| etc. */
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/* Then also choose other CallConvertXX()! */
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/*--------------------------------- number of available i/o channels: ------------------*/
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if (ALgetminmax(ALdev, AL_INPUT_COUNT, &min, &max))
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return translateSGIerror();
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pad->pad_Info.maxInputChannels = max;
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DBUG(("Pa_QueryDevice: maxInputChannels = %d\n", pad->pad_Info.maxInputChannels))
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if (ALgetminmax(ALdev, AL_OUTPUT_COUNT, &min, &max))
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return translateSGIerror();
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pad->pad_Info.maxOutputChannels = max;
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DBUG(("Pa_QueryDevice: maxOutputChannels = %d\n", pad->pad_Info.maxOutputChannels))
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/*--------------------------------- supported samplerates: ----------------------*/
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pad->pad_Info.numSampleRates = 7;
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pad->pad_Info.sampleRates = pad->pad_SampleRates;
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pad->pad_SampleRates[0] = (double)AL_RATE_8000; /* long -> double. */
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pad->pad_SampleRates[1] = (double)AL_RATE_11025;
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pad->pad_SampleRates[2] = (double)AL_RATE_16000;
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pad->pad_SampleRates[3] = (double)AL_RATE_22050;
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pad->pad_SampleRates[4] = (double)AL_RATE_32000;
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pad->pad_SampleRates[5] = (double)AL_RATE_44100;
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pad->pad_SampleRates[6] = (double)AL_RATE_48000;
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if (ALgetminmax(ALdev, AL_INPUT_RATE, &min, &max)) /* Ask INPUT rate-max. */
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return translateSGIerror(); /* double -> long. */
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if (max != (long)(0.5 + pad->pad_SampleRates[6])) /* FP-compare not recommndd. */
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goto weird;
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if (ALgetminmax(ALdev, AL_OUTPUT_RATE, &min, &max)) /* Ask OUTPUT rate-max. */
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return translateSGIerror();
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if (max != (long)(0.5 + pad->pad_SampleRates[6]))
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{
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weird: ERR_RPT(("Pa_sgiQueryDevice() did not confirm max samplerate (%ld)\n",max));
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return paHostError; /* Or make it a warning and just carry on... */
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}
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/*-------------------------------------------------------------------------------*/
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return paNoError;
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}
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/*--------------------------------------------------------------------------------*/
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int Pa_CountDevices() /* Name of this function suggests it only counts and */
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{ /* is NOT destructive, it however resets whole PA ! */
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int numDevices = 0; /* Let 's not do that here. */
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internalPortAudioDevice* currentDevice = sDeviceList; /* COPY GLOBAL VAR. */
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#if 0 /* Remains from linux_oss v15: Pa_Initialize(), on */
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if (!currentDevice) /* its turn, calls PaHost_Init() via file pa_lib.c. */
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Pa_Initialize(); /* Isn't that a bit too 'rude'? Don't be too */
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#endif /* friendly to clients that forgot to initialize PA. */
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while (currentDevice) /* Slower but more elegant than the sNumDevices-way: */
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{
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numDevices++;
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currentDevice = currentDevice->pad_Next;
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}
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return numDevices;
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}
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/*-------------------------------------------------------------------------------*/
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static internalPortAudioDevice *Pa_GetInternalDevice(PaDeviceID id)
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{
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int numDevices = 0;
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internalPortAudioDevice *res = (internalPortAudioDevice*)NULL;
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internalPortAudioDevice *pad = sDeviceList; /* COPY GLOBAL VAR. */
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while (pad) /* pad may be NULL, that's ok, return 0. */
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{ /* (Added ->pad_DeviceID field to the pad-struct, Pieter, 2001.) */
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if (pad->pad_DeviceID == id) /* This the device we were looking for? */
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res = pad; /* But keep on(!) counting so we don't */
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numDevices++; /* have to call Pa_CountDevices() later. */
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pad = pad->pad_Next; /* Advance to the next device or NULL. */
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} /* No assumptions about order of ID's in */
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if (!res) /* the list. */
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ERR_RPT(("Pa_GetInternalDevice() could not find specified ID (%d).\n",id));
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if ((id < 0) || (id >= numDevices))
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{
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ERR_RPT(("Pa_GetInternalDevice() supplied with an illegal ID (%d).\n",id));
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#if 1 /* Be strict, even when found, */
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res = (internalPortAudioDevice*)NULL; /* do not accept illegal ID's. */
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#endif
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}
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return res;
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}
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/*----------------------------------------------------------------------*/
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const PaDeviceInfo* Pa_GetDeviceInfo(PaDeviceID id)
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{
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PaDeviceInfo* res = (PaDeviceInfo*)NULL;
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internalPortAudioDevice* pad = Pa_GetInternalDevice(id); /* Call. */
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if (pad)
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res = &pad->pad_Info; /* Not finding the specified ID is not */
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if (!res) /* the same as &pad->pad_Info == NULL. */
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ERR_RPT(("Pa_GetDeviceInfo() could not find it (ID=%d).\n", id));
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return res; /* So (maybe) a second/third ERR_RPT(). */
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}
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/*------------------------------------------------*/
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PaDeviceID Pa_GetDefaultInputDeviceID(void)
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{
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return 0; /* 0 is the default device ID. */
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}
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/*------------------------------------------------*/
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PaDeviceID Pa_GetDefaultOutputDeviceID(void)
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{
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return 0;
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}
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/*-------------------------------------------------------------------------------------------------*/
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/* Build linked a list with all the available audio devices on this SGI machine (only 1 for now). */
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PaError PaHost_Init(void) /* Called by Pa_Initialize() from pa_lib.c. */
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{
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internalPortAudioDevice* pad;
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PaError r = paNoError;
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int audioLibFileID; /* To test for the presence of audio. */
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if (sDeviceList) /* Allow re-init, only warn, no error. */
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{
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ERR_RPT(("Warning: PaHost_Init() did not really re-init PA.\n"));
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return r;
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}
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/*------------- ADD THE SGI DEFAULT DEVICE TO THE LIST: ---------------------------------------*/
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audioLibFileID = open("/dev/hdsp/hdsp0master", O_RDONLY); /* Try to open Indigo style audio */
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if (audioLibFileID < 0) /* IO port. On failure, machine */
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{ /* has no audio ability. */
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ERR_RPT(("PaHost_Init(): This machine has no (Indigo-style) audio abilities.\n"));
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return paHostError;
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}
|
|
close(audioLibFileID); /* Allocate fast mem to hold device info. */
|
|
pad = PaHost_AllocateFastMemory(sizeof(internalPortAudioDevice));
|
|
if (pad == NULL)
|
|
return paInsufficientMemory;
|
|
memset(pad, 0, sizeof(internalPortAudioDevice)); /* "pad->pad_Next = NULL" is more elegant. */
|
|
r = Pa_sgiQueryDevice(AL_DEFAULT_DEVICE, /* Set AL device num (AL_DEFAULT_DEVICE). */
|
|
Pa_GetDefaultOutputDeviceID(),/* Set PA device num (or InputDeviceID()). */
|
|
"AL default", /* A suitable name. */
|
|
pad); /* Write args and queried info into pad. */
|
|
if (r != paNoError)
|
|
{
|
|
ERR_RPT(("Pa_QueryDevice for '%s' returned: %d\n", pad->pad_DeviceName, r));
|
|
PaHost_FreeFastMemory(pad, sizeof(internalPortAudioDevice)); /* sDeviceList still NULL ! */
|
|
}
|
|
else
|
|
sDeviceList = pad; /* First element in linked list. pad->pad_Next already NULL. */
|
|
/*------------- QUERY AND ADD MORE POSSIBLE SGI DEVICES TO THE LINKED LIST: -------------------*/
|
|
/*---------------------------------------------------------------------------------------------*/
|
|
return r;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------------------------------*/
|
|
static PaError Pa_SgiAudioProcess(internalPortAudioStream *past) /* Spawned by PaHost_StartEngine(). */
|
|
{
|
|
PaError result = paNoError;
|
|
PaHostSoundControl *pahsc;
|
|
|
|
if (!past)
|
|
return paBadStreamPtr;
|
|
pahsc = (PaHostSoundControl*)past->past_DeviceData;
|
|
if (!pahsc)
|
|
return paInternalError;
|
|
past->past_IsActive = 1; /* Wasn't this already done by the calling parent?! */
|
|
DBUG(("entering thread.\n"));
|
|
|
|
while (!past->past_StopSoon) /* OR-ing StopSoon and StopNow here gives problems! */
|
|
{
|
|
/*---------------------------------------- INPUT: ------------------------------------*/
|
|
if (pahsc->pahsc_NativeInputBuffer) /* Then pahsc_ALportIN should also be there! */
|
|
{
|
|
while (ALgetfilled(pahsc->pahsc_ALportIN) < pahsc->pahsc_SamplesPerInputBuffer)
|
|
{
|
|
/* Trying sginap(1); and usleep(); here... things get blocked under IRIX6.2. */
|
|
if (past->past_StopNow) /* Don't let ALreadsamps() block */
|
|
goto done;
|
|
}
|
|
if (ALreadsamps(pahsc->pahsc_ALportIN, (void*)pahsc->pahsc_NativeInputBuffer,
|
|
pahsc->pahsc_SamplesPerInputBuffer)) /* Number of samples instead */
|
|
{ /* of number of frames. */
|
|
ERR_RPT(("ALreadsamps() failed.\n"));
|
|
result = paInternalError;
|
|
goto done;
|
|
}
|
|
}
|
|
/*---------------------------------------------------- USER CALLBACK ROUTINE: ----------*/
|
|
/* DBUG(("Calling Pa_CallConvertInt16()...\n")); */
|
|
Pa_StartUsageCalculation(past); /* Convert 16 bit native data to */
|
|
result = Pa_CallConvertInt16(past, /* user data and call user routine. */
|
|
pahsc->pahsc_NativeInputBuffer, pahsc->pahsc_NativeOutputBuffer);
|
|
Pa_EndUsageCalculation(past);
|
|
if (result)
|
|
{
|
|
DBUG(("Pa_CallConvertInt16() returned %d, stopping...\n", result));
|
|
goto done; /* This is apparently NOT an error! */
|
|
} /* Just letting the userCallBack stop us. */
|
|
/*---------------------------------------- OUTPUT: ------------------------------------*/
|
|
if (pahsc->pahsc_NativeOutputBuffer) /* Then pahsc_ALportOUT should also be there! */
|
|
{
|
|
while (ALgetfillable(pahsc->pahsc_ALportOUT) < pahsc->pahsc_SamplesPerOutputBuffer)
|
|
{
|
|
/* Trying sginap(1); and usleep(); here... things get blocked under IRIX6.2. */
|
|
if (past->past_StopNow) /* Don't let ALwritesamps() block */
|
|
goto done;
|
|
}
|
|
if (ALwritesamps(pahsc->pahsc_ALportOUT, (void*)pahsc->pahsc_NativeOutputBuffer,
|
|
pahsc->pahsc_SamplesPerOutputBuffer))
|
|
{
|
|
ERR_RPT(("ALwritesamps() failed.\n"));
|
|
result = paInternalError;
|
|
goto done;
|
|
}
|
|
}
|
|
/*-------------------------------------------------------------------------------------*/
|
|
}
|
|
done:
|
|
/* pahsc->pahsc_ThreadPID = -1; Hu? doesn't help!! (added by Pieter) */
|
|
past->past_IsActive = 0;
|
|
DBUG(("leaving thread.\n"));
|
|
return result;
|
|
}
|
|
|
|
|
|
/*--------------------------------------------------------------------------------------*/
|
|
PaError PaHost_OpenStream(internalPortAudioStream *past)
|
|
{
|
|
PaError result = paNoError;
|
|
PaHostSoundControl *pahsc;
|
|
unsigned int minNumBuffers;
|
|
internalPortAudioDevice *padIN, *padOUT; /* For looking up native AL-numbers. */
|
|
ALconfig sgiALconfig = NULL; /* IRIX-datatype. */
|
|
long pvbuf[8]; /* To get/set hardware configs. */
|
|
long sr, ALqsize;
|
|
DBUG(("PaHost_OpenStream() called.\n")); /* Alloc FASTMEM and init host data. */
|
|
if (!past)
|
|
{
|
|
ERR_RPT(("Streampointer NULL!\n"));
|
|
result = paBadStreamPtr; goto done;
|
|
}
|
|
pahsc = (PaHostSoundControl*)PaHost_AllocateFastMemory(sizeof(PaHostSoundControl));
|
|
if (pahsc == NULL)
|
|
{
|
|
ERR_RPT(("FAST Memory allocation failed.\n")); /* Pass trough some ERR_RPT-exit- */
|
|
result = paInsufficientMemory; goto done; /* code (nothing will be freed). */
|
|
}
|
|
memset(pahsc, 0, sizeof(PaHostSoundControl));
|
|
/* pahsc->pahsc_threadPID = -1; Should pahsc_threadPID be inited to */
|
|
past->past_DeviceData = (void*)pahsc; /* -1 instead of 0 ?? */
|
|
/*--------------------------------------------------- Allocate native buffers: --------*/
|
|
pahsc->pahsc_SamplesPerInputBuffer = past->past_FramesPerUserBuffer * /* Needed by the */
|
|
past->past_NumInputChannels; /* audio-thread. */
|
|
pahsc->pahsc_BytesPerInputBuffer = pahsc->pahsc_SamplesPerInputBuffer * sizeof(short);
|
|
if (past->past_NumInputChannels > 0) /* Assumes short = 16 bits! */
|
|
{
|
|
pahsc->pahsc_NativeInputBuffer = (short*)PaHost_AllocateFastMemory(pahsc->pahsc_BytesPerInputBuffer);
|
|
if( pahsc->pahsc_NativeInputBuffer == NULL )
|
|
{
|
|
ERR_RPT(("Fast memory allocation for input-buffer failed.\n"));
|
|
result = paInsufficientMemory; goto done;
|
|
}
|
|
}
|
|
pahsc->pahsc_SamplesPerOutputBuffer = past->past_FramesPerUserBuffer * /* Needed by the */
|
|
past->past_NumOutputChannels; /* audio-thread. */
|
|
pahsc->pahsc_BytesPerOutputBuffer = pahsc->pahsc_SamplesPerOutputBuffer * sizeof(short);
|
|
if (past->past_NumOutputChannels > 0) /* Assumes short = 16 bits! */
|
|
{
|
|
pahsc->pahsc_NativeOutputBuffer = (short*)PaHost_AllocateFastMemory(pahsc->pahsc_BytesPerOutputBuffer);
|
|
if (pahsc->pahsc_NativeOutputBuffer == NULL)
|
|
{
|
|
ERR_RPT(("Fast memory allocation for output-buffer failed.\n"));
|
|
result = paInsufficientMemory; goto done;
|
|
}
|
|
}
|
|
/*------------------------------------------ Manipulate hardware if necessary and allowed: --*/
|
|
ALseterrorhandler(0); /* 0 = turn off the default error handler. */
|
|
pvbuf[0] = AL_INPUT_RATE;
|
|
pvbuf[2] = AL_INPUT_COUNT;
|
|
pvbuf[4] = AL_OUTPUT_RATE; /* TO FIX: rates may be logically, not always in Hz! */
|
|
pvbuf[6] = AL_OUTPUT_COUNT;
|
|
sr = (long)(past->past_SampleRate + 0.5); /* Common for input and output :-) */
|
|
if (past->past_NumInputChannels > 0) /* We need to lookup the corre- */
|
|
{ /* sponding native AL-number(s). */
|
|
padIN = Pa_GetInternalDevice(past->past_InputDeviceID);
|
|
if (!padIN)
|
|
{
|
|
ERR_RPT(("Pa_GetInternalDevice() for input failed.\n"));
|
|
result = paHostError; goto done;
|
|
}
|
|
if (ALgetparams(padIN->pad_ALdevice, &pvbuf[0], 4)) /* Although input and output will both be on */
|
|
goto sgiError; /* the same AL-device, the AL-library might */
|
|
if (pvbuf[1] != sr) /* contain more than AL_DEFAULT_DEVICE in */
|
|
{ /* Rate different from current harware-rate? the future. Therefore 2 seperate queries. */
|
|
if (pvbuf[3] > 0) /* Means, there's other clients using AL-input-ports */
|
|
{
|
|
ERR_RPT(("Sorry, not allowed to switch input-hardware to %ld Hz because \
|
|
another process is currently using input at %ld kHz.\n", sr, pvbuf[1]));
|
|
result = paHostError; goto done;
|
|
}
|
|
pvbuf[1] = sr; /* Then set input-rate. */
|
|
if (ALsetparams(padIN->pad_ALdevice, &pvbuf[0], 2))
|
|
goto sgiError; /* WHETHER THIS SAMPLERATE WAS REALLY PRESENT IN OUR ARRAY OF RATES, */
|
|
} /* IS NOT CHECKED, AT LEAST NOT BY ME, WITHIN THIS FILE! Does PA do? */
|
|
}
|
|
if (past->past_NumOutputChannels > 0) /* CARE: padOUT/IN may NOT be NULL if Channels <= 0! */
|
|
{ /* We use padOUT/IN later on, or at least 1 of both. */
|
|
padOUT = Pa_GetInternalDevice(past->past_OutputDeviceID);
|
|
if (!padOUT)
|
|
{
|
|
ERR_RPT(("Pa_GetInternalDevice() for output failed.\n"));
|
|
result = paHostError; goto done;
|
|
}
|
|
if (ALgetparams(padOUT->pad_ALdevice,&pvbuf[4], 4))
|
|
goto sgiError;
|
|
if ((past->past_NumOutputChannels > 0) && (pvbuf[5] != sr))
|
|
{ /* Output needed and rate different from current harware-rate. */
|
|
if (pvbuf[7] > 0) /* Means, there's other clients using AL-output-ports */
|
|
{
|
|
ERR_RPT(("Sorry, not allowed to switch output-hardware to %ld Hz because \
|
|
another process is currently using output at %ld kHz.\n", sr, pvbuf[5]));
|
|
result = paHostError; goto done; /* Will free again the inputbuffer */
|
|
} /* that was just created above. */
|
|
pvbuf[5] = sr; /* Then set output-rate. */
|
|
if (ALsetparams(padOUT->pad_ALdevice, &pvbuf[4], 2))
|
|
goto sgiError;
|
|
}
|
|
}
|
|
/*------------------------------------------ Construct an audio-port-configuration ----------*/
|
|
sgiALconfig = ALnewconfig(); /* Change the SGI-AL-default-settings. */
|
|
if (sgiALconfig == (ALconfig)0) /* sgiALconfig is released here after use! */
|
|
goto sgiError; /* See that sgiALconfig is NOT released! */
|
|
if (ALsetsampfmt(sgiALconfig, AL_SAMPFMT_TWOSCOMP)) /* Choose paInt16 as native i/o-format. */
|
|
goto sgiError;
|
|
if (ALsetwidth (sgiALconfig, AL_SAMPLE_16)) /* Only meaningful when sample format for */
|
|
goto sgiError; /* config is set to two's complement format. */
|
|
/************************ Future versions might (dynamically) switch to 32-bit floats? *******
|
|
if (ALsetsampfmt(sgiALconfig, AL_SAMPFMT_FLOAT)) (Then also call another CallConvert-func.)
|
|
goto sgiError;
|
|
if (ALsetfloatmax (sgiALconfig, 1.0)) Only meaningful when sample format for config
|
|
goto sgiError; is set to AL_SAMPFMT_FLOAT or AL_SAMPFMT_DOUBLE. */
|
|
/*---------- ?? --------------------*/
|
|
/* DBUG(("PaHost_OpenStream: pahsc_MinFramesPerHostBuffer = %d\n", pahsc->pahsc_MinFramesPerHostBuffer )); */
|
|
minNumBuffers = Pa_GetMinNumBuffers(past->past_FramesPerUserBuffer, past->past_SampleRate);
|
|
past->past_NumUserBuffers = (minNumBuffers > past->past_NumUserBuffers) ?
|
|
minNumBuffers : past->past_NumUserBuffers;
|
|
/*------------------------------------------------ Set internal AL queuesize (in samples) ----*/
|
|
if (pahsc->pahsc_SamplesPerInputBuffer >= pahsc->pahsc_SamplesPerOutputBuffer)
|
|
ALqsize = (long)pahsc->pahsc_SamplesPerInputBuffer;
|
|
else /* Take the largest of the two amounts. */
|
|
ALqsize = (long)pahsc->pahsc_SamplesPerOutputBuffer;
|
|
ALqsize *= 4; /* 4 times as large as amount per transfer! */
|
|
if (ALsetqueuesize(sgiALconfig, ALqsize)) /* Or should we use past_NumUserBuffers here? */
|
|
goto sgiError; /* Using 2 times may give glitches... */
|
|
/* Have to work on ALsetqueuesize() above. */
|
|
|
|
/* Do ALsetchannels() later, apart per input and/or output. */
|
|
/*----------------------------------------------- OPEN 1 OR 2 AL-DEVICES: --------------------*/
|
|
if (past->past_OutputDeviceID == past->past_InputDeviceID) /* Who SETS these devive-numbers? */
|
|
{
|
|
if ((past->past_NumOutputChannels > 0) && (past->past_NumInputChannels > 0))
|
|
{
|
|
DBUG(("PaHost_OpenStream: opening both input and output channels.\n"));
|
|
/*------------------------- open output port: ----------------------------------*/
|
|
if (ALsetchannels (sgiALconfig, (long)(past->past_NumOutputChannels)))
|
|
goto sgiError; /* Returns 0 on success, -1 on failure. */
|
|
pahsc->pahsc_ALportOUT = ALopenport("PA sgi out", "w", sgiALconfig);
|
|
if (pahsc->pahsc_ALportOUT == (ALport)0)
|
|
goto sgiError;
|
|
/*------------------------- open input port: -----------------------------------*/
|
|
if (ALsetchannels (sgiALconfig, (long)(past->past_NumInputChannels)))
|
|
goto sgiError; /* Returns 0 on success, -1 on failure. */
|
|
pahsc->pahsc_ALportIN = ALopenport("PA sgi in", "r", sgiALconfig);
|
|
if (pahsc->pahsc_ALportIN == (ALport)0)
|
|
goto sgiError; /* For some reason the "patest_wire.c"-test crashes! */
|
|
} /* Probably due to too small buffersizes?.... */
|
|
else
|
|
{
|
|
ERR_RPT(("Cannot setup bidirectional stream between different devices.\n"));
|
|
result = paHostError;
|
|
goto done;
|
|
}
|
|
}
|
|
else /* (OutputDeviceID != InputDeviceID) */
|
|
{
|
|
if (past->past_NumOutputChannels > 0) /* WRITE-ONLY: */
|
|
{
|
|
/*------------------------- open output port: ----------------------------------*/
|
|
DBUG(("PaHost_OpenStream: opening %d output channel(s) on %s.\n",
|
|
past->past_NumOutputChannels, padOUT->pad_DeviceName));
|
|
if (ALsetchannels (sgiALconfig, (long)(past->past_NumOutputChannels)))
|
|
goto sgiError; /* Returns 0 on success, -1 on failure. */
|
|
pahsc->pahsc_ALportOUT = ALopenport("PA sgi out", "w", sgiALconfig);
|
|
if (pahsc->pahsc_ALportOUT == (ALport)0)
|
|
goto sgiError;
|
|
}
|
|
if (past->past_NumInputChannels > 0) /* READ-ONLY: */
|
|
{
|
|
/*------------------------- open input port: -----------------------------------*/
|
|
DBUG(("PaHost_OpenStream: opening %d input channel(s) on %s.\n",
|
|
past->past_NumInputChannels, padIN->pad_DeviceName));
|
|
if (ALsetchannels (sgiALconfig, (long)(past->past_NumInputChannels)))
|
|
goto sgiError; /* Returns 0 on success, -1 on failure. */
|
|
pahsc->pahsc_ALportIN = ALopenport("PA sgi in", "r", sgiALconfig);
|
|
if (pahsc->pahsc_ALportIN == (ALport)0)
|
|
goto sgiError;
|
|
}
|
|
}
|
|
DBUG(("PaHost_OpenStream() succeeded.\n"));
|
|
goto done; /* (no errors occured) */
|
|
sgiError:
|
|
result = translateSGIerror(); /* Translates SGI AL-code to PA-code and ERR_RPTs string. */
|
|
done:
|
|
if (sgiALconfig)
|
|
ALfreeconfig(sgiALconfig); /* We don't need that struct anymore. */
|
|
if (result != paNoError)
|
|
PaHost_CloseStream(past); /* Frees memory (only if really allocated!). */
|
|
return result;
|
|
}
|
|
|
|
/*-----------------------------------------------------*/
|
|
PaError PaHost_StartOutput(internalPortAudioStream *past)
|
|
{
|
|
return paNoError; /* Hmm, not implemented yet? */
|
|
}
|
|
PaError PaHost_StartInput(internalPortAudioStream *past)
|
|
{
|
|
return paNoError;
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
PaError PaHost_StartEngine(internalPortAudioStream *past)
|
|
{
|
|
PaHostSoundControl *pahsc;
|
|
int hres;
|
|
PaError result = paNoError;
|
|
|
|
if (!past) /* Test argument. */
|
|
{
|
|
ERR_RPT(("PaHost_StartEngine(NULL)!\n"));
|
|
return paBadStreamPtr;
|
|
}
|
|
pahsc = (PaHostSoundControl*)past->past_DeviceData;
|
|
if (!pahsc)
|
|
{
|
|
ERR_RPT(("PaHost_StartEngine(arg): arg->past_DeviceData == NULL!\n"));
|
|
return paHostError;
|
|
}
|
|
past->past_StopSoon = 0; /* Assume SGI ALport is already opened! */
|
|
past->past_StopNow = 0;
|
|
past->past_IsActive = 1;
|
|
DBUG(("PaHost_StartEngine() called.\n"));
|
|
/* Use pthread_create() instead of __clone() because: */
|
|
/* - pthread_create also works for other UNIX systems like Solaris, */
|
|
/* - Java HotSpot VM crashes in pthread_setcanceltype() when using __clone(). */
|
|
hres = pthread_create(&(pahsc->pahsc_ThreadPID), /* SPAWN AUDIO-CHILD. */
|
|
NULL, /* pthread_attr_t * attr */
|
|
(void*)Pa_SgiAudioProcess,
|
|
past);
|
|
if (hres)
|
|
{
|
|
result = paHostError;
|
|
sPaHostError = hres;
|
|
ERR_RPT(("PaHost_StartEngine() failed to spawn audio-thread.\n"));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*------------------------------------------------------------------------------*/
|
|
PaError PaHost_StopEngine(internalPortAudioStream *past, int abort)
|
|
{
|
|
int hres;
|
|
PaError result = paNoError;
|
|
PaHostSoundControl *pahsc;
|
|
|
|
DBUG(("PaHost_StopEngine() called.\n"));
|
|
if (!past)
|
|
return paBadStreamPtr;
|
|
pahsc = (PaHostSoundControl*)past->past_DeviceData;
|
|
if (pahsc == NULL)
|
|
return result; /* paNoError (already stopped, no err?). */
|
|
past->past_StopSoon = 1; /* Tell background thread to stop generating */
|
|
if (abort) /* more and to let current data play out. If */
|
|
past->past_StopNow = 1; /* aborting, tell backgrnd thread to stop NOW! */
|
|
if (pahsc->pahsc_ThreadPID != -1) /* Join thread to recover memory resources. */
|
|
{
|
|
DBUG(("pthread_join() called.\n"));
|
|
hres = pthread_join(pahsc->pahsc_ThreadPID, NULL);
|
|
if (hres)
|
|
{
|
|
result = paHostError;
|
|
sPaHostError = hres;
|
|
ERR_RPT(("PaHost_StopEngine() failed pthread_join().\n"));
|
|
}
|
|
pahsc->pahsc_ThreadPID = -1;
|
|
}
|
|
past->past_IsActive = 0;
|
|
return result;
|
|
}
|
|
|
|
/*---------------------------------------------------------------*/
|
|
PaError PaHost_StopOutput(internalPortAudioStream *past, int abort)
|
|
{
|
|
return paNoError; /* Not implemented yet? */
|
|
}
|
|
PaError PaHost_StopInput(internalPortAudioStream *past, int abort )
|
|
{
|
|
return paNoError;
|
|
}
|
|
|
|
/*******************************************************************/
|
|
PaError PaHost_CloseStream(internalPortAudioStream *past)
|
|
{
|
|
PaHostSoundControl *pahsc;
|
|
PaError result = paNoError;
|
|
|
|
DBUG(("PaHost_CloseStream() called.\n"));
|
|
if (past == NULL)
|
|
return paBadStreamPtr;
|
|
pahsc = (PaHostSoundControl *) past->past_DeviceData;
|
|
if (pahsc == NULL) /* If pahsc not NULL, past_DeviceData will be freed, and set to NULL. */
|
|
return result; /* This test prevents from freeing NULL-pointers. */
|
|
|
|
if (pahsc->pahsc_ALportIN)
|
|
{
|
|
if (ALcloseport(pahsc->pahsc_ALportIN))
|
|
result = translateSGIerror(); /* Translates SGI AL-code to PA-code and ERR_RPTs string. */
|
|
else /* But go on anyway... to release other stuff... */
|
|
pahsc->pahsc_ALportIN = (ALport)0;
|
|
}
|
|
if (pahsc->pahsc_ALportOUT)
|
|
{
|
|
if (ALcloseport(pahsc->pahsc_ALportOUT))
|
|
result = translateSGIerror();
|
|
else
|
|
pahsc->pahsc_ALportOUT = (ALport)0;
|
|
}
|
|
if (pahsc->pahsc_NativeInputBuffer)
|
|
{
|
|
PaHost_FreeFastMemory(pahsc->pahsc_NativeInputBuffer, pahsc->pahsc_BytesPerInputBuffer);
|
|
pahsc->pahsc_NativeInputBuffer = NULL;
|
|
}
|
|
if (pahsc->pahsc_NativeOutputBuffer)
|
|
{
|
|
PaHost_FreeFastMemory(pahsc->pahsc_NativeOutputBuffer, pahsc->pahsc_BytesPerOutputBuffer);
|
|
pahsc->pahsc_NativeOutputBuffer = NULL;
|
|
}
|
|
PaHost_FreeFastMemory(pahsc, sizeof(PaHostSoundControl));
|
|
past->past_DeviceData = NULL; /* PaHost_OpenStream() allocated FAST. */
|
|
return result;
|
|
}
|
|
|
|
/*************************************************************************
|
|
** Determine minimum number of buffers required for this host based
|
|
** on minimum latency. Latency can be optionally set by user by setting
|
|
** an environment variable. For example, to set latency to 200 msec, put:
|
|
** set PA_MIN_LATENCY_MSEC=200
|
|
** in the AUTOEXEC.BAT file and reboot.
|
|
** If the environment variable is not set, then the latency will be
|
|
** determined based on the OS. Windows NT has higher latency than Win95.
|
|
*/
|
|
#define PA_LATENCY_ENV_NAME ("PA_MIN_LATENCY_MSEC")
|
|
|
|
int Pa_GetMinNumBuffers( int framesPerBuffer, double sampleRate )
|
|
{
|
|
return 2;
|
|
}
|
|
/* Hmmm, the note above isn't appropriate for SGI I'm afraid... */
|
|
/* Do we HAVE to do it this way under IRIX???.... */
|
|
/*--------------------------------------------------------------*/
|
|
|
|
|
|
/*---------------------------------------------------------------------*/
|
|
PaError PaHost_Term(void) /* Frees all of the linked audio-devices. */
|
|
{ /* Called by Pa_Terminate() from pa_lib.c. */
|
|
internalPortAudioDevice *pad = sDeviceList,
|
|
*nxt;
|
|
while (pad)
|
|
{
|
|
DBUG(("PaHost_Term: freeing %s\n", pad->pad_DeviceName));
|
|
nxt = pad->pad_Next;
|
|
PaHost_FreeFastMemory(pad, sizeof(internalPortAudioDevice));
|
|
pad = nxt; /* PaHost_Init allocated this FAST MEM.*/
|
|
}
|
|
sDeviceList = (internalPortAudioDevice*)NULL;
|
|
return 0; /* Got rid of sNumDevices=0; */
|
|
}
|
|
|
|
/***********************************************************************/
|
|
void Pa_Sleep( long msec ) /* Sleep requested number of milliseconds. */
|
|
{
|
|
#if 0
|
|
struct timeval timeout;
|
|
timeout.tv_sec = msec / 1000;
|
|
timeout.tv_usec = (msec % 1000) * 1000;
|
|
select(0, NULL, NULL, NULL, &timeout);
|
|
#else
|
|
long usecs = msec * 1000;
|
|
usleep( usecs );
|
|
#endif
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------------------*/
|
|
/* Allocate memory that can be accessed in real-time. This may need to be held in physi- */
|
|
/* cal memory so that it is not paged to virtual memory. This call MUST be balanced with */
|
|
/* a call to PaHost_FreeFastMemory(). */
|
|
void *PaHost_AllocateFastMemory(long numBytes)
|
|
{
|
|
void *addr = malloc(numBytes);
|
|
if (addr)
|
|
memset(addr, 0, numBytes);
|
|
return addr;
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------------------*/
|
|
/* Free memory that could be accessed in real-time. This call MUST be balanced with a */
|
|
/* call to PaHost_AllocateFastMemory(). */
|
|
void PaHost_FreeFastMemory(void *addr, long numBytes)
|
|
{
|
|
if (addr)
|
|
free(addr);
|
|
}
|
|
|
|
/*----------------------------------------------------------*/
|
|
PaError PaHost_StreamActive (internalPortAudioStream *past)
|
|
{
|
|
PaHostSoundControl *pahsc;
|
|
if (past == NULL)
|
|
return paBadStreamPtr;
|
|
pahsc = (PaHostSoundControl *) past->past_DeviceData;
|
|
if (pahsc == NULL)
|
|
return paInternalError;
|
|
return (PaError)(past->past_IsActive != 0);
|
|
}
|
|
|
|
/*-------------------------------------------------------------------*/
|
|
PaTimestamp Pa_StreamTime( PortAudioStream *stream )
|
|
{
|
|
internalPortAudioStream *past = (internalPortAudioStream *) stream;
|
|
/* FIXME - return actual frames played, not frames generated.
|
|
** Need to query the output device somehow.
|
|
*/
|
|
return past->past_FrameCount;
|
|
}
|