diff options
Diffstat (limited to 'pd/portaudio/pa_sgi/pthread-pa_sgi.c')
| -rw-r--r-- | pd/portaudio/pa_sgi/pthread-pa_sgi.c | 908 |
1 files changed, 908 insertions, 0 deletions
diff --git a/pd/portaudio/pa_sgi/pthread-pa_sgi.c b/pd/portaudio/pa_sgi/pthread-pa_sgi.c new file mode 100644 index 00000000..e9ab273c --- /dev/null +++ b/pd/portaudio/pa_sgi/pthread-pa_sgi.c @@ -0,0 +1,908 @@ +/* + * PortAudio Portable Real-Time Audio Library + * Latest Version at: http://www.portaudio.com + * SGI IRIX implementation by Pieter Suurmond, september 22, 2001 (#0.18). + * + * Copyright (c) 1999-2001 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. + */ +/* +Modfication History: + 8/12/2001 - Pieter Suurmond - took the v15 pa_linux_oss.c file and started to adapt for IRIX 6.2. + 8/17/2001 - alpha release with IRIX sproc()-method, may sometimes let IRIX6.2 crash at closing audiostream. + 9/22/2001 - #0.18 pthread starts to work a bit: + BUT UNDER IRIX6.2, I DON'T GET IT TO WORK REALLY CORRECTLY, + this POSIX-attempt, + DON'T USE THIS FILE FOR RELIABLE OPERATION, IT IS HERE JUST + FOR DOCUMENTATION/ARCHIVE... OR FOR ANYONE WHO WANTS TO FIX...... +TODO: + - Test under IRIX 6.5. + - Dynamically switch to 32 bit float as native format when appropriate (let SGI do the conversion), + and maybe also the other natively supported formats? (might increase performance) + - Not sure whether CPU UTILIZATION MEASUREMENT (from OSS/linux) really works. Changed nothing yet, + seems ok, but I've not yet tested it thoroughly. (maybe utilization-code may be made _unix_common_ then?) + - The minimal number of buffers setting... I do not yet fully understand it.. I now just take *4. +REFERENCES: + - IRIX 6.2 man pages regarding SGI AL library. + - IRIS Digital MediaProgramming Guide (online books as well as man-pages come with IRIX 6.2 and + may not be publically available on the internet). +*/ + +#include <stdio.h> /* Standard libraries. */ +#include <stdlib.h> + +#include "../pa_common/portaudio.h" /* Portaudio headers. */ +#include "../pa_common/pa_host.h" +#include "../pa_common/pa_trace.h" + +/* +#include <malloc.h> +#include <memory.h> +#include <sys/prctl.h> Not needed +#include <sys/types.h> +#include <sys/schedctl.h> +#include <signal.h> +#include <sys/ioctl.h> Needed? +#include <sys/time.h> +#include <sched.h> sched_param struct and related functions + used in setting thread priorities. +#include <limits.h> Some POSIX constants such as _POSIX_THREAD_THREADS_MAX +*/ + +#include <pthread.h> /* Pthreads are supported by IRIX 6.2 after */ + /* patches 1361, 1367, and 1429 are applied. */ + +#include <fcntl.h> /* fcntl.h needed for "O_RDONLY". */ +#include <unistd.h> /* For usleep() and constants used when calling sysconf() */ + /* to query POSIX limits (see the sysconf(3) ref. page. */ + +#include <dmedia/audio.h> /* SGI-specific audio library. */ + + +/*--------------------------------------------*/ +#define PRINT(x) { printf x; fflush(stdout); } +#define ERR_RPT(x) PRINT(x) +#define DBUG(x) PRINT(x) +#define DBUGX(x) /* PRINT(x) */ + +#define MAX_CHARS_DEVNAME (16) /* Was 32 in OSS (20 for AL but "in"/"out" is concat. */ +#define MAX_SAMPLE_RATES (8) /* Known from SGI AL there are 7 (was 10 in OSS v15). */ + +typedef struct internalPortAudioDevice /* IRIX specific device info: */ +{ + PaDeviceID /* NEW: */ pad_DeviceID; /* THIS "ID" IS NEW HERE (Pieter)! */ + long pad_ALdevice; /* SGI-number! */ + double pad_SampleRates[MAX_SAMPLE_RATES]; /* for pointing to from pad_Info */ + char pad_DeviceName[MAX_CHARS_DEVNAME+1]; /* +1 for \0, one more than OSS. */ + PaDeviceInfo pad_Info; /* pad_Info (v15) contains: */ + /* int structVersion; */ + /* const char* name; */ + /* int maxInputChannels, maxOutputChannels; */ + /* int numSampleRates; Num rates, or -1 if range supprtd. */ + /* const double* sampleRates; Array of supported sample rates, */ + /* PaSampleFormat nativeSampleFormats; or {min,max} if range supported. */ + struct internalPortAudioDevice* pad_Next; /* Singly linked list, (NULL=end). */ +} internalPortAudioDevice; + +typedef struct PaHostSoundControl /* Structure to contain all SGI IRIX specific data. */ +{ + ALport pahsc_ALportIN, /* IRIX-audio-library-datatype. ALports can only be */ + pahsc_ALportOUT; /* unidirectional, so we sometimes need 2 of them. */ + pthread_t pahsc_ThreadPID; + short *pahsc_NativeInputBuffer, /* Allocated here, in this file, if necessary. */ + *pahsc_NativeOutputBuffer; + unsigned int pahsc_BytesPerInputBuffer, /* Native buffer sizes in bytes, really needed here */ + pahsc_BytesPerOutputBuffer; /* to free FAST memory, if buffs were alloctd FAST. */ + unsigned int pahsc_SamplesPerInputBuffer, /* These amounts are needed again and again in the */ + pahsc_SamplesPerOutputBuffer; /* audio-thread (don't need to be kept globally). */ + struct itimerval pahsc_EntryTime, /* For measuring CPU utilization (same as linux). */ + pahsc_LastExitTime; + long pahsc_InsideCountSum, + pahsc_TotalCountSum; +} PaHostSoundControl; + +/*----------------------------- Shared Data ------------------------------------------------------*/ +static internalPortAudioDevice* sDeviceList = NULL; /* FIXME - put Mutex around this shared data. */ +static int sPaHostError = 0; /* Maybe more than one process writing errs!? */ + +long Pa_GetHostError(void) +{ + return (long)sPaHostError; +} + +/*----------------------------- BEGIN CPU UTILIZATION MEASUREMENT -----------------*/ +/* (copied from source pa_linux_oss/pa_linux_oss.c) */ +static void Pa_StartUsageCalculation( internalPortAudioStream *past ) +{ + struct itimerval itimer; + PaHostSoundControl *pahsc = (PaHostSoundControl *) past->past_DeviceData; + if( pahsc == NULL ) return; +/* Query system timer for usage analysis and to prevent overuse of CPU. */ + getitimer( ITIMER_REAL, &pahsc->pahsc_EntryTime ); +} + +static long SubtractTime_AminusB( struct itimerval *timeA, struct itimerval *timeB ) +{ + long secs = timeA->it_value.tv_sec - timeB->it_value.tv_sec; + long usecs = secs * 1000000; + usecs += (timeA->it_value.tv_usec - timeB->it_value.tv_usec); + return usecs; +} + +static void Pa_EndUsageCalculation( internalPortAudioStream *past ) +{ + struct itimerval currentTime; + long insideCount; + long totalCount; /* Measure CPU utilization during this callback. */ + +#define LOWPASS_COEFFICIENT_0 (0.95) +#define LOWPASS_COEFFICIENT_1 (0.99999 - LOWPASS_COEFFICIENT_0) + + PaHostSoundControl *pahsc = (PaHostSoundControl *) past->past_DeviceData; + if (pahsc == NULL) + return; + if (getitimer( ITIMER_REAL, ¤tTime ) == 0 ) + { + if (past->past_IfLastExitValid) + { + insideCount = SubtractTime_AminusB( &pahsc->pahsc_EntryTime, ¤tTime ); + pahsc->pahsc_InsideCountSum += insideCount; + totalCount = SubtractTime_AminusB( &pahsc->pahsc_LastExitTime, ¤tTime ); + pahsc->pahsc_TotalCountSum += totalCount; + /* DBUG(("insideCount = %d, totalCount = %d\n", insideCount, totalCount )); */ + /* Low pass filter the result because sometimes we get called several times in a row. */ + /* That can cause the TotalCount to be very low which can cause the usage to appear */ + /* unnaturally high. So we must filter numerator and denominator separately!!! */ + if (pahsc->pahsc_InsideCountSum > 0) + { + past->past_AverageInsideCount = ((LOWPASS_COEFFICIENT_0 * past->past_AverageInsideCount) + + (LOWPASS_COEFFICIENT_1 * pahsc->pahsc_InsideCountSum)); + past->past_AverageTotalCount = ((LOWPASS_COEFFICIENT_0 * past->past_AverageTotalCount) + + (LOWPASS_COEFFICIENT_1 * pahsc->pahsc_TotalCountSum)); + past->past_Usage = past->past_AverageInsideCount / past->past_AverageTotalCount; + pahsc->pahsc_InsideCountSum = 0; + pahsc->pahsc_TotalCountSum = 0; + } + } + past->past_IfLastExitValid = 1; + } + pahsc->pahsc_LastExitTime.it_value.tv_sec = 100; + pahsc->pahsc_LastExitTime.it_value.tv_usec = 0; + setitimer( ITIMER_REAL, &pahsc->pahsc_LastExitTime, NULL ); + past->past_IfLastExitValid = 1; +} /*----------- END OF CPU UTILIZATION CODE (from pa_linux_oss/pa_linux_oss.c v15)--------------------*/ + + +/*--------------------------------------------------------------------------------------*/ +PaError translateSGIerror(void) /* Calls oserror(), may be used after an SGI AL-library */ +{ /* call to report via ERR_RPT(), yields a PaError-num. */ + const char* a = "SGI AL "; /* (Not absolutely sure errno came from THIS thread! */ + switch(oserror()) /* Read IRIX man-pages about the _SGI_MP_SOURCE macro.) */ + { + case AL_BAD_OUT_OF_MEM: + ERR_RPT(("%sout of memory.\n", a)); + return paInsufficientMemory; /* Known PaError. */ + case AL_BAD_CONFIG: + ERR_RPT(("%sconfiguration invalid or NULL.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_CHANNELS: + ERR_RPT(("%schannels not 1,2 or 4.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_NO_PORTS: + ERR_RPT(("%sout of audio ports.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_DEVICE: + ERR_RPT(("%swrong device number.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_DEVICE_ACCESS: + ERR_RPT(("%swrong device access.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_DIRECTION: + ERR_RPT(("%sinvalid direction.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_SAMPFMT: + ERR_RPT(("%sdoesn't accept sampleformat.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_FLOATMAX: + ERR_RPT(("%smax float value is zero.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_WIDTH: + ERR_RPT(("%sunsupported samplewidth.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_QSIZE: + ERR_RPT(("%sinvalid queue size.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_PVBUFFER: + ERR_RPT(("%sPVbuffer null.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_BUFFERLENGTH_NEG: + ERR_RPT(("%snegative bufferlength.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_BUFFERLENGTH_ODD: + ERR_RPT(("%sodd bufferlength.\n", a)); + return paHostError; /* Generic PaError. */ + case AL_BAD_PARAM: + ERR_RPT(("%sparameter not valid for device.\n", a)); + return paHostError; /* Generic PaError. */ + default: + ERR_RPT(("%sunknown error.\n", a)); + return paHostError; /* Generic PaError. */ + } +} + +/*------------------------------------------------------------------------------------------*/ +/* Tries to set various rates and formats and fill in the device info structure. */ +static PaError Pa_sgiQueryDevice(long ALdev, /* (AL_DEFAULT_DEVICE) */ + PaDeviceID id, /* (DefaultI|ODeviceID()) */ + char* name, /* (for example "SGI AL") */ + internalPortAudioDevice* pad) /* Result written to pad. */ +{ + int format; + long min, max; /* To catch hardware characteristics. */ + ALseterrorhandler(0); /* 0 = turn off the default error handler. */ + /*--------------------------------------------------------------------------------------*/ + pad->pad_ALdevice = ALdev; /* Set the AL device number. */ + pad->pad_DeviceID = id; /* Set the PA device number. */ + if (strlen(name) > MAX_CHARS_DEVNAME) /* MAX_CHARS defined above. */ + { + ERR_RPT(("Pa_QueryDevice(): name too long (%s).\n", name)); + return paHostError; + } + strcpy(pad->pad_DeviceName, name); /* Write name-string. */ + pad->pad_Info.name = pad->pad_DeviceName; /* Set pointer,..hmmm. */ + /*--------------------------------- natively supported sample formats: -----------------*/ + pad->pad_Info.nativeSampleFormats = paInt16; /* Later also include paFloat32 | ..| etc. */ + /* Then also choose other CallConvertXX()! */ + /*--------------------------------- number of available i/o channels: ------------------*/ + if (ALgetminmax(ALdev, AL_INPUT_COUNT, &min, &max)) + return translateSGIerror(); + pad->pad_Info.maxInputChannels = max; + DBUG(("Pa_QueryDevice: maxInputChannels = %d\n", pad->pad_Info.maxInputChannels)) + if (ALgetminmax(ALdev, AL_OUTPUT_COUNT, &min, &max)) + return translateSGIerror(); + pad->pad_Info.maxOutputChannels = max; + DBUG(("Pa_QueryDevice: maxOutputChannels = %d\n", pad->pad_Info.maxOutputChannels)) + /*--------------------------------- supported samplerates: ----------------------*/ + pad->pad_Info.numSampleRates = 7; + pad->pad_Info.sampleRates = pad->pad_SampleRates; + pad->pad_SampleRates[0] = (double)AL_RATE_8000; /* long -> double. */ + pad->pad_SampleRates[1] = (double)AL_RATE_11025; + pad->pad_SampleRates[2] = (double)AL_RATE_16000; + pad->pad_SampleRates[3] = (double)AL_RATE_22050; + pad->pad_SampleRates[4] = (double)AL_RATE_32000; + pad->pad_SampleRates[5] = (double)AL_RATE_44100; + pad->pad_SampleRates[6] = (double)AL_RATE_48000; + if (ALgetminmax(ALdev, AL_INPUT_RATE, &min, &max)) /* Ask INPUT rate-max. */ + return translateSGIerror(); /* double -> long. */ + if (max != (long)(0.5 + pad->pad_SampleRates[6])) /* FP-compare not recommndd. */ + goto weird; + if (ALgetminmax(ALdev, AL_OUTPUT_RATE, &min, &max)) /* Ask OUTPUT rate-max. */ + return translateSGIerror(); + if (max != (long)(0.5 + pad->pad_SampleRates[6])) + { +weird: ERR_RPT(("Pa_sgiQueryDevice() did not confirm max samplerate (%ld)\n",max)); + return paHostError; /* Or make it a warning and just carry on... */ + } + /*-------------------------------------------------------------------------------*/ + return paNoError; +} + + +/*--------------------------------------------------------------------------------*/ +int Pa_CountDevices() /* Name of this function suggests it only counts and */ +{ /* is NOT destructive, it however resets whole PA ! */ + int numDevices = 0; /* Let 's not do that here. */ + internalPortAudioDevice* currentDevice = sDeviceList; /* COPY GLOBAL VAR. */ +#if 0 /* Remains from linux_oss v15: Pa_Initialize(), on */ + if (!currentDevice) /* its turn, calls PaHost_Init() via file pa_lib.c. */ + Pa_Initialize(); /* Isn't that a bit too 'rude'? Don't be too */ +#endif /* friendly to clients that forgot to initialize PA. */ + while (currentDevice) /* Slower but more elegant than the sNumDevices-way: */ + { + numDevices++; + currentDevice = currentDevice->pad_Next; + } + return numDevices; +} + +/*-------------------------------------------------------------------------------*/ +static internalPortAudioDevice *Pa_GetInternalDevice(PaDeviceID id) +{ + int numDevices = 0; + internalPortAudioDevice *res = (internalPortAudioDevice*)NULL; + internalPortAudioDevice *pad = sDeviceList; /* COPY GLOBAL VAR. */ + while (pad) /* pad may be NULL, that's ok, return 0. */ + { /* (Added ->pad_DeviceID field to the pad-struct, Pieter, 2001.) */ + if (pad->pad_DeviceID == id) /* This the device we were looking for? */ + res = pad; /* But keep on(!) counting so we don't */ + numDevices++; /* have to call Pa_CountDevices() later. */ + pad = pad->pad_Next; /* Advance to the next device or NULL. */ + } /* No assumptions about order of ID's in */ + if (!res) /* the list. */ + ERR_RPT(("Pa_GetInternalDevice() could not find specified ID (%d).\n",id)); + if ((id < 0) || (id >= numDevices)) + { + ERR_RPT(("Pa_GetInternalDevice() supplied with an illegal ID (%d).\n",id)); +#if 1 /* Be strict, even when found, */ + res = (internalPortAudioDevice*)NULL; /* do not accept illegal ID's. */ +#endif + } + return res; +} + +/*----------------------------------------------------------------------*/ +const PaDeviceInfo* Pa_GetDeviceInfo(PaDeviceID id) +{ + PaDeviceInfo* res = (PaDeviceInfo*)NULL; + internalPortAudioDevice* pad = Pa_GetInternalDevice(id); /* Call. */ + if (pad) + res = &pad->pad_Info; /* Not finding the specified ID is not */ + if (!res) /* the same as &pad->pad_Info == NULL. */ + ERR_RPT(("Pa_GetDeviceInfo() could not find it (ID=%d).\n", id)); + return res; /* So (maybe) a second/third ERR_RPT(). */ +} + +/*------------------------------------------------*/ +PaDeviceID Pa_GetDefaultInputDeviceID(void) +{ + return 0; /* 0 is the default device ID. */ +} +/*------------------------------------------------*/ +PaDeviceID Pa_GetDefaultOutputDeviceID(void) +{ + return 0; +} + +/*-------------------------------------------------------------------------------------------------*/ +/* Build linked a list with all the available audio devices on this SGI machine (only 1 for now). */ +PaError PaHost_Init(void) /* Called by Pa_Initialize() from pa_lib.c. */ +{ + internalPortAudioDevice* pad; + PaError r = paNoError; + int audioLibFileID; /* To test for the presence of audio. */ + + if (sDeviceList) /* Allow re-init, only warn, no error. */ + { + ERR_RPT(("Warning: PaHost_Init() did not really re-init PA.\n")); + return r; + } + /*------------- ADD THE SGI DEFAULT DEVICE TO THE LIST: ---------------------------------------*/ + audioLibFileID = open("/dev/hdsp/hdsp0master", O_RDONLY); /* Try to open Indigo style audio */ + if (audioLibFileID < 0) /* IO port. On failure, machine */ + { /* has no audio ability. */ + ERR_RPT(("PaHost_Init(): This machine has no (Indigo-style) audio abilities.\n")); + return paHostError; + } + 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; +} |