aboutsummaryrefslogtreecommitdiff
path: root/pd/portaudio_v18/pa_unix_oss/pa_unix_oss.c
diff options
context:
space:
mode:
Diffstat (limited to 'pd/portaudio_v18/pa_unix_oss/pa_unix_oss.c')
-rw-r--r--pd/portaudio_v18/pa_unix_oss/pa_unix_oss.c385
1 files changed, 0 insertions, 385 deletions
diff --git a/pd/portaudio_v18/pa_unix_oss/pa_unix_oss.c b/pd/portaudio_v18/pa_unix_oss/pa_unix_oss.c
deleted file mode 100644
index 386cd75b..00000000
--- a/pd/portaudio_v18/pa_unix_oss/pa_unix_oss.c
+++ /dev/null
@@ -1,385 +0,0 @@
-/*
- * PortAudio Portable Real-Time Audio Library
- * Latest Version at: http://www.portaudio.com
- * Linux OSS Implementation by douglas repetto and Phil Burk
- *
- * Copyright (c) 1999-2000 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.
- *
- */
-
-/* Modification history:
- 20020621: pa_unix_oss.c split into pa_unix.c, pa_unix.h, pa_unix_oss.c by
- Augustus Saunders. See pa_unix.c for previous history. Pa_FlushStream
- added by Augustus Saunders for Solaris compatibility.
- PLB20021018 - Fill device info table with actual sample rates instead of wished for rates.
- - Allow stream to open if sample rate within 10% of desired rate.
- 20030630 - Thomas Richter - eliminated unused variable warnings.
-*/
-
-#include "pa_unix.h"
-
-#ifdef __linux__
-#include <linux/soundcard.h>
-#else
-#include <machine/soundcard.h> /* JH20010905 */
-#endif
-
-
-#ifndef AFMT_S16_NE
-#define AFMT_S16_NE Get_AFMT_S16_NE()
-/*********************************************************************
- * Some versions of OSS do not define AFMT_S16_NE. So check CPU.
- * PowerPC is Big Endian. X86 is Little Endian.
- */
-int Get_AFMT_S16_NE( void )
-{
- long testData = 1;
- char *ptr = (char *) &testData;
- int isLittle = ( *ptr == 1 ); /* Does address point to least significant byte? */
- return isLittle ? AFMT_S16_LE : AFMT_S16_BE;
-}
-#endif /* AFMT_S16_NE */
-
-
-/*********************************************************************
- * Try to open the named device.
- * If it opens, try to set various rates and formats and fill in
- * the device info structure.
- */
-PaError Pa_QueryDevice( const char *deviceName, internalPortAudioDevice *pad )
-{
- int result = paHostError;
- int tempDevHandle;
- int numChannels, maxNumChannels;
- int format;
- int numSampleRates;
- int sampleRate;
- int numRatesToTry;
- int lastRate;
- int ratesToTry[9] = {96000, 48000, 44100, 32000, 24000, 22050, 16000, 11025, 8000};
- int i;
-
- /* douglas:
- we have to do this querying in a slightly different order. apparently
- some sound cards will give you different info based on their settings.
- e.g. a card might give you stereo at 22kHz but only mono at 44kHz.
- the correct order for OSS is: format, channels, sample rate
-
- */
- if ( (tempDevHandle = open(deviceName,O_WRONLY|O_NONBLOCK)) == -1 )
- {
- DBUG(("Pa_QueryDevice: could not open %s\n", deviceName ));
- return paHostError;
- }
-
- /* Ask OSS what formats are supported by the hardware. */
- pad->pad_Info.nativeSampleFormats = 0;
-
- if (ioctl(tempDevHandle, SNDCTL_DSP_GETFMTS, &format) == -1)
- {
- ERR_RPT(("Pa_QueryDevice: could not get format info\n" ));
- goto error;
- }
- if( format & AFMT_U8 ) pad->pad_Info.nativeSampleFormats |= paUInt8;
- if( format & AFMT_S16_NE ) pad->pad_Info.nativeSampleFormats |= paInt16;
-
- /* Negotiate for the maximum number of channels for this device. PLB20010927
- * Consider up to 16 as the upper number of channels.
- * Variable numChannels should contain the actual upper limit after the call.
- * Thanks to John Lazzaro and Heiko Purnhagen for suggestions.
- */
- maxNumChannels = 0;
- for( numChannels = 1; numChannels <= 16; numChannels++ )
- {
- int temp = numChannels;
- DBUG(("Pa_QueryDevice: use SNDCTL_DSP_CHANNELS, numChannels = %d\n", numChannels ))
- if(ioctl(tempDevHandle, SNDCTL_DSP_CHANNELS, &temp) < 0 )
- {
- /* ioctl() failed so bail out if we already have stereo */
- if( numChannels > 2 ) break;
- }
- else
- {
- /* ioctl() worked but bail out if it does not support numChannels.
- * We don't want to leave gaps in the numChannels supported.
- */
- if( (numChannels > 2) && (temp != numChannels) ) break;
- DBUG(("Pa_QueryDevice: temp = %d\n", temp ))
- if( temp > maxNumChannels ) maxNumChannels = temp; /* Save maximum. */
- }
- }
-
- /* The above negotiation may fail for an old driver so try this older technique. */
- if( maxNumChannels < 1 )
- {
- int stereo = 1;
- if(ioctl(tempDevHandle, SNDCTL_DSP_STEREO, &stereo) < 0)
- {
- maxNumChannels = 1;
- }
- else
- {
- maxNumChannels = (stereo) ? 2 : 1;
- }
- DBUG(("Pa_QueryDevice: use SNDCTL_DSP_STEREO, maxNumChannels = %d\n", maxNumChannels ))
- }
-
- pad->pad_Info.maxOutputChannels = maxNumChannels;
- DBUG(("Pa_QueryDevice: maxNumChannels = %d\n", maxNumChannels))
-
- /* During channel negotiation, the last ioctl() may have failed. This can
- * also cause sample rate negotiation to fail. Hence the following, to return
- * to a supported number of channels. SG20011005 */
- {
- int temp = maxNumChannels;
- if( temp > 2 ) temp = 2; /* use most reasonable default value */
- ioctl(tempDevHandle, SNDCTL_DSP_CHANNELS, &temp);
- }
-
- /* FIXME - for now, assume maxInputChannels = maxOutputChannels.
- * Eventually do separate queries for O_WRONLY and O_RDONLY
- */
- pad->pad_Info.maxInputChannels = pad->pad_Info.maxOutputChannels;
-
- DBUG(("Pa_QueryDevice: maxInputChannels = %d\n",
- pad->pad_Info.maxInputChannels))
-
-
- /* Determine available sample rates by trying each one and seeing result.
- * OSS often supports funky rates such as 44188 instead of 44100!
- */
- numSampleRates = 0;
- lastRate = 0;
- numRatesToTry = sizeof(ratesToTry)/sizeof(int);
- for (i = 0; i < numRatesToTry; i++)
- {
- sampleRate = ratesToTry[i];
-
- if (ioctl(tempDevHandle, SNDCTL_DSP_SPEED, &sampleRate) >= 0 ) /* PLB20010817 */
- {
- /* Use whatever rate OSS tells us. PLB20021018 */
- if (sampleRate != lastRate)
- {
- DBUG(("Pa_QueryDevice: adding sample rate: %d\n", sampleRate))
- pad->pad_SampleRates[numSampleRates] = (float)sampleRate;
- numSampleRates++;
- lastRate = sampleRate;
- }
- else
- {
- DBUG(("Pa_QueryDevice: dang - got sample rate %d again!\n", sampleRate))
- }
- }
- }
-
- DBUG(("Pa_QueryDevice: final numSampleRates = %d\n", numSampleRates))
- if (numSampleRates==0) /* HP20010922 */
- {
- /* Desparate attempt to keep running even though no good rates found! */
- ERR_RPT(("Pa_QueryDevice: no supported sample rate (or SNDCTL_DSP_SPEED ioctl call failed). Force 44100 Hz\n" ));
- pad->pad_SampleRates[numSampleRates++] = 44100;
- }
-
- pad->pad_Info.numSampleRates = numSampleRates;
- pad->pad_Info.sampleRates = pad->pad_SampleRates; /* use pointer to embedded array */
-
- pad->pad_Info.name = deviceName;
-
- result = paNoError;
-
-error:
- /* We MUST close the handle here or we won't be able to reopen it later!!! */
- close(tempDevHandle);
-
- return result;
-}
-
-/*******************************************************************************************/
-PaError Pa_SetupDeviceFormat( int devHandle, int numChannels, int sampleRate )
-{
- PaError result = paNoError;
- int tmp;
-
- /* Set format, channels, and rate in this order to keep OSS happy. */
- /* Set data format. FIXME - handle more native formats. */
- tmp = AFMT_S16_NE;
- if( ioctl(devHandle,SNDCTL_DSP_SETFMT,&tmp) == -1)
- {
- ERR_RPT(("Pa_SetupDeviceFormat: could not SNDCTL_DSP_SETFMT\n" ));
- return paHostError;
- }
- if( tmp != AFMT_S16_NE )
- {
- ERR_RPT(("Pa_SetupDeviceFormat: HW does not support AFMT_S16_NE\n" ));
- return paHostError;
- }
-
-
- /* Set number of channels. */
- tmp = numChannels;
- if (ioctl(devHandle, SNDCTL_DSP_CHANNELS, &numChannels) == -1)
- {
- ERR_RPT(("Pa_SetupDeviceFormat: could not SNDCTL_DSP_CHANNELS\n" ));
- return paHostError;
- }
- if( tmp != numChannels)
- {
- ERR_RPT(("Pa_SetupDeviceFormat: HW does not support %d channels\n", numChannels ));
- return paHostError;
- }
-
- /* Set playing frequency. */
- tmp = sampleRate;
- if( ioctl(devHandle,SNDCTL_DSP_SPEED,&tmp) == -1)
- {
- ERR_RPT(("Pa_SetupDeviceFormat: could not SNDCTL_DSP_SPEED\n" ));
- return paHostError;
- }
- else if( tmp != sampleRate )
- {
- int percentError = abs( (100 * (sampleRate - tmp)) / sampleRate );
- PRINT(("Pa_SetupDeviceFormat: warning - requested sample rate = %d Hz - closest = %d\n",
- sampleRate, tmp ));
- /* Allow sample rate within 10% off of requested rate. PLB20021018
- * Sometimes OSS uses a funky rate like 44188 instead of 44100.
- */
- if( percentError > 10 )
- {
- ERR_RPT(("Pa_SetupDeviceFormat: HW does not support %d Hz sample rate\n",sampleRate ));
- return paHostError;
- }
- }
-
- return result;
-}
-
-PaError Pa_SetupOutputDeviceFormat( int devHandle, int numChannels, int sampleRate )
-{
- return Pa_SetupDeviceFormat(devHandle, numChannels, sampleRate);
-}
-
-PaError Pa_SetupInputDeviceFormat( int devHandle, int numChannels, int sampleRate )
-{
- return Pa_SetupDeviceFormat(devHandle, numChannels, sampleRate);
-}
-
-
-/*******************************************************************************************
-** Set number of fragments and size of fragments to achieve desired latency.
-*/
-
-static int CalcHigherLogTwo( int n )
-{
- int log2 = 0;
- while( (1<<log2) < n ) log2++;
- return log2;
-}
-
-void Pa_SetLatency( int devHandle, int numBuffers, int framesPerBuffer, int channelsPerFrame )
-{
- int tmp;
- int bufferSize, powerOfTwo;
-
- /* Increase size of buffers and reduce number of buffers to reduce latency inside driver. */
- while( numBuffers > 8 )
- {
- numBuffers = (numBuffers + 1) >> 1;
- framesPerBuffer = framesPerBuffer << 1;
- }
-
- /* calculate size of buffers in bytes */
- bufferSize = framesPerBuffer * channelsPerFrame * sizeof(short); /* FIXME - other sizes? */
-
- /* Calculate next largest power of two */
- powerOfTwo = CalcHigherLogTwo( bufferSize );
- DBUG(("Pa_SetLatency: numBuffers = %d, framesPerBuffer = %d, powerOfTwo = %d\n",
- numBuffers, framesPerBuffer, powerOfTwo ));
-
- /* Encode info into a single int */
- tmp=(numBuffers<<16) + powerOfTwo;
-
- if(ioctl(devHandle,SNDCTL_DSP_SETFRAGMENT,&tmp) == -1)
- {
- ERR_RPT(("Pa_SetLatency: could not SNDCTL_DSP_SETFRAGMENT\n" ));
- /* Don't return an error. Best to just continue and hope for the best. */
- ERR_RPT(("Pa_SetLatency: numBuffers = %d, framesPerBuffer = %d, powerOfTwo = %d\n",
- numBuffers, framesPerBuffer, powerOfTwo ));
- }
-}
-
-/***********************************************************************/
-PaTimestamp Pa_StreamTime( PortAudioStream *stream )
-{
- internalPortAudioStream *past = (internalPortAudioStream *) stream;
- PaHostSoundControl *pahsc;
-
- count_info info;
- int delta;
-
- if( past == NULL ) return paBadStreamPtr;
-
- pahsc = (PaHostSoundControl *) past->past_DeviceData;
-
- if( pahsc->pahsc_NativeOutputBuffer )
- {
- ioctl(pahsc->pahsc_OutputHandle, SNDCTL_DSP_GETOPTR, &info);
- delta = (info.bytes - pahsc->pahsc_LastPosPtr) & 0x000FFFFF;
- return (pahsc->pahsc_LastStreamBytes + delta) / (past->past_NumOutputChannels * sizeof(short));
- }
- else
- {
- ioctl(pahsc->pahsc_InputHandle, SNDCTL_DSP_GETIPTR, &info);
- delta = (info.bytes - pahsc->pahsc_LastPosPtr) & 0x000FFFFF;
- return (pahsc->pahsc_LastStreamBytes + delta) / (past->past_NumInputChannels * sizeof(short));
- }
-}
-
-void Pa_UpdateStreamTime(PaHostSoundControl *pahsc)
-{
- count_info info;
- int delta;
-
- /* Update current stream time (using a double so that
- we don't wrap around like info.bytes does) */
- if( pahsc->pahsc_NativeOutputBuffer )
- {
- ioctl(pahsc->pahsc_OutputHandle, SNDCTL_DSP_GETOPTR, &info);
- }
- else
- {
- ioctl(pahsc->pahsc_InputHandle, SNDCTL_DSP_GETIPTR, &info);
- }
- delta = (info.bytes - pahsc->pahsc_LastPosPtr) & 0x000FFFFF;
- pahsc->pahsc_LastStreamBytes += delta;
- pahsc->pahsc_LastPosPtr = info.bytes;
-}
-
-PaError Pa_FlushStream(int devHandle)
-{
- /* AS: This doesn't do anything under OSS; it was added for Solaris.*/
- devHandle = devHandle; /* unused */
- return paNoError;
-}