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authorMichele Calgaro <[email protected]>2020-12-06 19:28:06 +0900
committerMichele Calgaro <[email protected]>2020-12-06 19:28:06 +0900
commit00d4f92b717fbcbed6f9eee361975d6ee5380d59 (patch)
tree043b5970d66e539e1fbf6dde03440d6569e34c4e /flow/audioiooss.cc
parent2f53bfe61c8ee78ff36ac6c66ae714b01e407b33 (diff)
downloadarts-00d4f92b717fbcbed6f9eee361975d6ee5380d59.tar.gz
arts-00d4f92b717fbcbed6f9eee361975d6ee5380d59.zip
Renaming of files in preparation for code style tools.
Signed-off-by: Michele Calgaro <[email protected]>
Diffstat (limited to 'flow/audioiooss.cc')
-rw-r--r--flow/audioiooss.cc485
1 files changed, 0 insertions, 485 deletions
diff --git a/flow/audioiooss.cc b/flow/audioiooss.cc
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--- a/flow/audioiooss.cc
+++ /dev/null
@@ -1,485 +0,0 @@
- /*
-
- Copyright (C) 2000 Stefan Westerfeld
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public
- License as published by the Free Software Foundation; either
- version 2 of the License, or (at your option) any later version.
-
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public License
- along with this library; see the file COPYING.LIB. If not, write to
- the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, USA.
-
- */
-
-#ifdef HAVE_CONFIG_H
- #include <config.h>
-#endif
-
-#if defined(HAVE_SYS_SOUNDCARD_H)
- #include <sys/soundcard.h>
- #define COMPILE_AUDIOIO_OSS 1
-#elif defined(HAVE_SOUNDCARD_H)
- #include <soundcard.h>
- #define COMPILE_AUDIOIO_OSS 1
-#endif
-
-/**
- * only compile 'oss' AudioIO class if sys/soundcard.h or soundcard.h is present
- */
-#ifdef COMPILE_AUDIOIO_OSS
-
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <sys/time.h>
-#include <sys/stat.h>
-
-#ifdef HAVE_SYS_SELECT_H
- #include <sys/select.h> // Needed on some systems.
-#endif
-
-#include <assert.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <iostream>
-#include <algorithm>
-#include <cstring>
-
-#include "debug.h"
-#include "audioio.h"
-
-namespace Arts {
-
-class AudioIOOSS : public AudioIO {
-protected:
- int audio_fd;
- int requestedFragmentSize;
- int requestedFragmentCount;
-
- std::string findDefaultDevice();
- int ossBits(int format);
-
-public:
- AudioIOOSS();
-
- void setParam(AudioParam param, int& value);
- int getParam(AudioParam param);
-
- bool open();
- void close();
- int read(void *buffer, int size);
- int write(void *buffer, int size);
-};
-
-REGISTER_AUDIO_IO(AudioIOOSS,"oss","Open Sound System");
-}
-
-using namespace std;
-using namespace Arts;
-
-/*
- * Tries to figure out which is the OSS device we should write to
- */
-string AudioIOOSS::findDefaultDevice()
-{
- static const char *device[] = {
- "/dev/dsp", /* The usual device */
- // how does access(2) deal with a directory?
- // I don't know, but, since /dev/sound/dsp is a linux bogosity
- #if defined(__linux__)
- "/dev/sound/dsp", /* Linux with devfs-only installation */
- #else
- "/dev/sound", /* NetBSD */
- #endif
- "/dev/audio", /* OpenBSD */
- 0
- };
-
- for(int i = 0; device[i]; i++)
- if(access(device[i],F_OK) == 0)
- return device[i];
-
- // Should this really return a valid device if we have access to none?
- return device[0];
-}
-
-int AudioIOOSS::ossBits(int format)
-{
- arts_return_val_if_fail (format == AFMT_U8
- || format == AFMT_S16_LE
- || format == AFMT_S16_BE, 16);
-
- return (format == AFMT_U8)?8:16;
-}
-
-AudioIOOSS::AudioIOOSS()
-{
- /*
- * default parameters
- */
- param(samplingRate) = 44100;
- paramStr(deviceName) = findDefaultDevice();
- requestedFragmentSize = param(fragmentSize) = 1024;
- requestedFragmentCount = param(fragmentCount) = 7;
- param(channels) = 2;
- param(direction) = 2;
-}
-
-bool AudioIOOSS::open()
-{
- string& _error = paramStr(lastError);
- string& _deviceName = paramStr(deviceName);
- int& _channels = param(channels);
- int& _fragmentSize = param(fragmentSize);
- int& _fragmentCount = param(fragmentCount);
- int& _samplingRate = param(samplingRate);
- int& _format = param(format);
-
- int mode;
-
- if(param(direction) == 3)
- mode = O_RDWR|O_NDELAY;
- else if(param(direction) == 2)
- mode = O_WRONLY|O_NDELAY;
- else
- {
- _error = "invalid direction";
- return false;
- }
-
- audio_fd = ::open(_deviceName.c_str(), mode, 0);
-
- if(audio_fd == -1)
- {
- _error = "device ";
- _error += _deviceName.c_str();
- _error += " can't be opened (";
- _error += strerror(errno);
- _error += ")";
- return false;
- }
- /*
- * check device capabilities
- */
- int device_caps;
- if(ioctl(audio_fd,SNDCTL_DSP_GETCAPS,&device_caps) == -1)
- device_caps=0;
-
- string caps = "";
- if(device_caps & DSP_CAP_DUPLEX) caps += "duplex ";
- if(device_caps & DSP_CAP_REALTIME) caps += "realtime ";
- if(device_caps & DSP_CAP_BATCH) caps += "batch ";
- if(device_caps & DSP_CAP_COPROC) caps += "coproc ";
- if(device_caps & DSP_CAP_TRIGGER) caps += "trigger ";
- if(device_caps & DSP_CAP_MMAP) caps += "mmap ";
- artsdebug("device capabilities: revision%d %s",
- device_caps & DSP_CAP_REVISION, caps.c_str());
-
- int requestedFormat = (_format == 8)?AFMT_U8:AFMT_S16_LE;
- int gotFormat = requestedFormat;
- if (ioctl(audio_fd, SNDCTL_DSP_SETFMT, &gotFormat)==-1)
- {
- _error = "SNDCTL_DSP_SETFMT failed - ";
- _error += strerror(errno);
-
- close();
- return false;
- }
-
- if (_format && (ossBits(gotFormat) != ossBits(requestedFormat)))
- {
- char details[80];
- sprintf(details," (_format = %d, asked driver to give %d, got %d)",
- _format, requestedFormat, gotFormat);
-
- _error = "Can't set playback format";
- _error += details;
-
- close();
- return false;
- }
-
- if(gotFormat == AFMT_U8)
- _format = 8;
- else if(gotFormat == AFMT_S16_LE)
- _format = 16;
- else if(gotFormat == AFMT_S16_BE)
- _format = 17;
- else
- {
- char details[80];
- sprintf(details," (_format = %d, asked driver to give %d, got %d)",
- _format, requestedFormat, gotFormat);
-
- _error = "unknown format given by driver";
- _error += details;
-
- close();
- return false;
- }
-
-
- int stereo=-1; /* 0=mono, 1=stereo */
-
- if(_channels == 1)
- {
- stereo = 0;
- }
- if(_channels == 2)
- {
- stereo = 1;
- }
-
- if(stereo == -1)
- {
- _error = "internal error; set channels to 1 (mono) or 2 (stereo)";
-
- close();
- return false;
- }
-
- int requeststereo = stereo;
-
- if (ioctl(audio_fd, SNDCTL_DSP_STEREO, &stereo)==-1)
- {
- _error = "SNDCTL_DSP_STEREO failed - ";
- _error += strerror(errno);
-
- close();
- return false;
- }
-
- if (requeststereo != stereo)
- {
- _error = "audio device doesn't support number of requested channels";
-
- close();
- return false;
- }
-
- int speed = _samplingRate;
-
- if (ioctl(audio_fd, SNDCTL_DSP_SPEED, &speed)==-1)
- {
- _error = "SNDCTL_DSP_SPEED failed - ";
- _error += strerror(errno);
-
- close();
- return false;
- }
-
- /*
- * Some soundcards seem to be able to only supply "nearly" the requested
- * sampling rate, especially PAS 16 cards seem to quite radical supplying
- * something different than the requested sampling rate ;)
- *
- * So we have a quite large tolerance here (when requesting 44100 Hz, it
- * will accept anything between 38690 Hz and 49510 Hz). Most parts of the
- * aRts code will do resampling where appropriate, so it shouldn't affect
- * sound quality.
- */
- int tolerance = _samplingRate/10+1000;
-
- if (abs(speed-_samplingRate) > tolerance)
- {
- _error = "can't set requested samplingrate";
-
- char details[80];
- sprintf(details," (requested rate %d, got rate %d)",
- _samplingRate, speed);
- _error += details;
-
- close();
- return false;
- }
- _samplingRate = speed;
-
- /*
- * set the fragment settings to what the user requested
- */
-
- _fragmentSize = requestedFragmentSize;
- _fragmentCount = requestedFragmentCount;
-
- /*
- * lower 16 bits are the fragment size (as 2^S)
- * higher 16 bits are the number of fragments
- */
- int frag_arg = 0;
-
- int size = _fragmentSize;
- while(size > 1) { size /= 2; frag_arg++; }
- frag_arg += (_fragmentCount << 16);
- if(ioctl(audio_fd, SNDCTL_DSP_SETFRAGMENT, &frag_arg) == -1)
- {
- char buffer[1024];
- _error = "can't set requested fragments settings";
- sprintf(buffer,"size%d:count%d\n",_fragmentSize,_fragmentCount);
- close();
- return false;
- }
-
- /*
- * now see what we really got as cards aren't required to supply what
- * we asked for
- */
- audio_buf_info info;
- if(ioctl(audio_fd,SNDCTL_DSP_GETOSPACE, &info) == -1)
- {
- _error = "can't retrieve fragment settings";
- close();
- return false;
- }
-
- // update fragment settings with what we got
- _fragmentSize = info.fragsize;
- _fragmentCount = info.fragstotal;
-
- artsdebug("buffering: %d fragments with %d bytes "
- "(audio latency is %1.1f ms)", _fragmentCount, _fragmentSize,
- (float)(_fragmentSize*_fragmentCount) /
- (float)(2.0 * _samplingRate * _channels)*1000.0);
-
- /*
- * Workaround for broken kernel drivers: usually filling up the audio
- * buffer is _only_ required if _fullDuplex is true. However, there
- * are kernel drivers around (especially everything related to ES1370/1371)
- * which will not trigger select()ing the file descriptor unless we have
- * written something first.
- */
- char *zbuffer = (char *)calloc(sizeof(char), _fragmentSize);
- if(_format == 8)
- for(int zpos = 0; zpos < _fragmentSize; zpos++)
- zbuffer[zpos] |= 0x80;
-
- for(int fill = 0; fill < _fragmentCount; fill++)
- {
- int len = write(zbuffer,_fragmentSize);
- if(len != _fragmentSize)
- {
- arts_debug("AudioIOOSS: failed prefilling audio buffer (might cause synchronization problems in conjunction with full duplex)");
- fill = _fragmentCount+1;
- }
- }
- free(zbuffer);
-
- /*
- * Triggering - the original aRts code did this for full duplex:
- *
- * - stop audio i/o using SETTRIGGER(~(PCM_ENABLE_INPUT|PCM_ENABLE_OUTPUT))
- * - fill buffer (see zbuffer code two lines above)
- * - start audio i/o using SETTRIGGER(PCM_ENABLE_INPUT|PCM_ENABLE_OUTPUT)
- *
- * this should guarantee synchronous start of input/output. Today, it
- * seems there are too many broken drivers around for this.
- */
-
- if(device_caps & DSP_CAP_TRIGGER)
- {
- int enable_bits = 0;
-
- if(param(direction) & 1) enable_bits |= PCM_ENABLE_INPUT;
- if(param(direction) & 2) enable_bits |= PCM_ENABLE_OUTPUT;
-
- if(ioctl(audio_fd,SNDCTL_DSP_SETTRIGGER, &enable_bits) == -1)
- {
- _error = "can't start sound i/o";
-
- close();
- return false;
- }
- }
- return true;
-}
-
-void AudioIOOSS::close()
-{
- ::close(audio_fd);
-}
-
-void AudioIOOSS::setParam(AudioParam p, int& value)
-{
- switch(p)
- {
- case fragmentSize:
- param(p) = requestedFragmentSize = value;
- break;
- case fragmentCount:
- param(p) = requestedFragmentCount = value;
- break;
- default:
- param(p) = value;
- break;
- }
-}
-
-int AudioIOOSS::getParam(AudioParam p)
-{
- audio_buf_info info;
- switch(p)
- {
- case canRead:
- ioctl(audio_fd, SNDCTL_DSP_GETISPACE, &info);
- return info.bytes;
- break;
-
- case canWrite:
- ioctl(audio_fd, SNDCTL_DSP_GETOSPACE, &info);
- return info.bytes;
- break;
-
- case selectReadFD:
- return (param(direction) & directionRead)?audio_fd:-1;
- break;
-
- case selectWriteFD:
- return (param(direction) & directionWrite)?audio_fd:-1;
- break;
-
- case autoDetect:
- /* OSS works reasonable almost everywhere where it compiles */
- return 10;
- break;
-
- default:
- return param(p);
- break;
- }
-}
-
-int AudioIOOSS::read(void *buffer, int size)
-{
- arts_assert(audio_fd != 0);
-
- int result;
- do {
- result = ::read(audio_fd,buffer,size);
- } while(result == -1 && errno == EINTR);
-
- return result;
-}
-
-int AudioIOOSS::write(void *buffer, int size)
-{
- arts_assert(audio_fd != 0);
-
- int result;
- do {
- result = ::write(audio_fd,buffer,size);
- } while(result == -1 && errno == EINTR);
-
- return result;
-}
-
-#endif