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author | Michele Calgaro <[email protected]> | 2020-12-06 19:28:06 +0900 |
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committer | Michele Calgaro <[email protected]> | 2020-12-06 19:28:06 +0900 |
commit | 00d4f92b717fbcbed6f9eee361975d6ee5380d59 (patch) | |
tree | 043b5970d66e539e1fbf6dde03440d6569e34c4e /flow/audioiooss.cc | |
parent | 2f53bfe61c8ee78ff36ac6c66ae714b01e407b33 (diff) | |
download | arts-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.cc | 485 |
1 files changed, 0 insertions, 485 deletions
diff --git a/flow/audioiooss.cc b/flow/audioiooss.cc deleted file mode 100644 index 21ce41d..0000000 --- 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 |