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Diffstat (limited to 'flow/audioioesd.cc')
| -rw-r--r-- | flow/audioioesd.cc | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/flow/audioioesd.cc b/flow/audioioesd.cc new file mode 100644 index 0000000..a3fa4b5 --- /dev/null +++ b/flow/audioioesd.cc @@ -0,0 +1,231 @@ + /* + + Copyright (C) 2001 Jochen Hoenicke + jochen@gnu.org + + Copyright (C) 2003 Ian Chiew + ian@snork.net + + 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., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. + + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +/** + * only compile esound AudioIO class if libesd was detected during + * configure + */ +#ifdef HAVE_LIBESD + +#include <sys/types.h> +#include <sys/ioctl.h> +#include <sys/time.h> +#include <sys/stat.h> + +#include <assert.h> +#include <errno.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <iostream> + +#include "audioio.h" +#include "audiosubsys.h" +#include "iomanager.h" +#include "dispatcher.h" + +#include <esd.h> + +#ifdef __BIG_ENDIAN__ +#define _format_bits 17 +#else +#define _format_bits 16 +#endif + +namespace Arts { + +class AudioIOESD : public AudioIO, public IONotify { +protected: + int server_fd, read_fd, write_fd; + +public: + AudioIOESD(); + + void setParam(AudioParam param, int& value); + int getParam(AudioParam param); + void notifyIO(int fd, int type); + + bool open(); + void close(); + void run(); + int read(void *buffer, int size); + int write(void *buffer, int size); +}; + +REGISTER_AUDIO_IO(AudioIOESD,"esd","Enlightened Sound Daemon"); +} + +using namespace std; +using namespace Arts; + +AudioIOESD::AudioIOESD() +{ + /* + * default parameters + */ + param(samplingRate) = 44100; + paramStr(deviceName) = "null"; + param(fragmentSize) = 1024; + param(fragmentCount) = 7; + param(format) = _format_bits; + param(channels) = 2; + param(direction) = 2; + + server_fd = -1; + read_fd = -1; + write_fd = -1; +} + +bool AudioIOESD::open() +{ + int& _channels = param(channels); + int& _direction = param(direction); + int& _samplingRate = param(samplingRate); + int& _format = param(format); + string& _error = paramStr(lastError); + + if ((server_fd = esd_open_sound(NULL)) == -1) + { + _error = "Couldn't connect to server"; + return false; + } + + esd_server_info_t *server_info = esd_get_server_info(server_fd); + + if (server_info == NULL) + { + _error = "Unable to query EsounD server"; + return false; + } + + esd_format_t server_format = server_info->format; + + _samplingRate = server_info->rate; + _channels = (server_format & ESD_STEREO) ? 2 : 1; + _format = (server_format & ESD_BITS16) ? _format_bits : 8; + + esd_free_server_info(server_info); + + if (_direction & directionRead) + { + read_fd = esd_record_stream(server_format, _samplingRate, + NULL, "aRts"); + if (read_fd == -1) + { + _error = "Couldn't create read uflow"; + return false; + } + } + + if (_direction & directionWrite) + { + write_fd = esd_play_stream(server_format, _samplingRate, + NULL, "aRts"); + if (write_fd == -1) + { + _error = "Couldn't create write flow"; + return false; + } + } + + return true; +} + +void AudioIOESD::notifyIO(int, int) +{ +} + +void AudioIOESD::close() +{ + if (write_fd != -1) + esd_close(write_fd); + + if (read_fd != -1) + esd_close(read_fd); + + if (server_fd != -1) + esd_close(server_fd); +} + +void AudioIOESD::setParam(AudioParam p, int& value) +{ + switch(p) + { + case channels: + case format: + case direction: + case samplingRate: + param(p) = value; + close(); + open(); + return; + + default: + param(p) = value; + return; + } +} + +int AudioIOESD::getParam(AudioParam p) +{ + switch(p) + { + case selectReadFD: + return read_fd; + + case selectWriteFD: + return write_fd; + + case canRead: + return ESD_BUF_SIZE; + + case canWrite: + return ESD_BUF_SIZE; + + // ESD handles are actually socket descriptors, and I know not + // of any portable way to peek at the socket's send or receive + // buffers. + + default: + return param(p); + } +} + +int AudioIOESD::read(void *buffer, int size) +{ + return ::read(read_fd, buffer, size); +} + +int AudioIOESD::write(void *buffer, int size) +{ + return ::write(write_fd, buffer, size); +} + +#endif |