[linux-audio-dev] [PATCH] oss support for jack
Jussi Laako
jussi.laako at pp.inet.fi
Fri Nov 14 20:47:27 UTC 2003
Hi,
I've written preliminary OSS driver for JACK. Patch for jack 0.80
attached.
This is by no means final, this is something pre-alpha, but seems to
work at least with alsaplayer. It's likely to contains errors in jack
driver implementation. All comments/patches/anything is welcome..
If you are compiling with OSS Lite, please comment out the non-S16
formats.
RedHat RPMs and patch available at http://www.sonarnerd.net/linux/ ,
SuSE 9 packages coming.
--
Jussi Laako <jussi.laako at pp.inet.fi>
-------------- next part --------------
--- jack-audio-connection-kit-0.80.0/configure.in 2003-08-29 01:21:07.000000000 +0300
+++ jackit/configure.in 2003-11-14 00:43:54.000000000 +0200
@@ -112,8 +112,8 @@
JACK_CORE_CFLAGS="-I\$(top_srcdir) -D_REENTRANT -D_POSIX_PTHREAD_SEMANTICS -Wall $SHM_FLAGS"
-JACK_CFLAGS="$JACK_CORE_CFLAGS -g"
-JACK_OPT_CFLAGS="$JACK_CORE_CFLAGS -O3 -fomit-frame-pointer -ffast-math -fstrength-reduce -funroll-loops -fmove-all-movables"
+JACK_CFLAGS="$JACK_CORE_CFLAGS -g $CFLAGS"
+JACK_OPT_CFLAGS="$JACK_CORE_CFLAGS -march=pentium2 -mcpu=pentium4 -O3 -ffast-math -funroll-loops -fprefetch-loop-arrays"
AC_ARG_ENABLE(optimize,
[ --enable-optimize ask the compiler for its best optimizations],
@@ -295,6 +295,7 @@
drivers/Makefile
drivers/alsa/Makefile
drivers/dummy/Makefile
+drivers/oss/Makefile
example-clients/Makefile
doc/Makefile
doc/reference.doxygen
--- jack-audio-connection-kit-0.80.0/drivers/Makefile.am 2003-08-29 02:41:21.000000000 +0300
+++ jackit/drivers/Makefile.am 2003-11-14 00:43:54.000000000 +0200
@@ -6,6 +6,6 @@
ALSA_DIR =
endif
-SUBDIRS = dummy $(ALSA_DIR)
+SUBDIRS = dummy $(ALSA_DIR) oss
-DIST_SUBDIRS = dummy alsa
+DIST_SUBDIRS = dummy alsa oss
--- jack-audio-connection-kit-0.80.0/drivers/oss/oss_driver.h 1970-01-01 02:00:00.000000000 +0200
+++ jackit/drivers/oss/oss_driver.h 2003-11-14 20:40:04.000000000 +0200
@@ -0,0 +1,76 @@
+/*
+
+ OSS driver for Jack
+ Copyright (C) 2003 Jussi Laako <jussi at sonarnerd.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ MA 02111-1307 USA
+
+*/
+
+
+#ifndef __JACK_OSS_DRIVER_H__
+#define __JACK_OSS_DRIVER_H__
+
+#include <jack/types.h>
+#include <jack/jslist.h>
+#include <jack/driver.h>
+#include <jack/jack.h>
+
+
+#define OSS_DRIVER_DEF_FS 44100
+#define OSS_DRIVER_DEF_BLKSIZE 1024
+#define OSS_DRIVER_DEF_BITS 16
+#define OSS_DRIVER_DEF_INS 2
+#define OSS_DRIVER_DEF_OUTS 2
+#define OSS_DRIVER_MAX_PORTS 16
+
+
+typedef jack_default_audio_sample_t jack_sample_t;
+
+typedef struct _oss_driver
+{
+ JACK_DRIVER_DECL
+
+ jack_nframes_t sample_rate;
+ jack_nframes_t period_size;
+ int bits;
+ unsigned int capture_channels;
+ unsigned int playback_channels;
+
+ char *indev;
+ char *outdev;
+ int infd;
+ int outfd;
+ int format;
+
+ size_t indevbufsize;
+ size_t outdevbufsize;
+ size_t portbufsize;
+ void *indevbuf;
+ void *outdevbuf;
+ jack_sample_t *inportbufs[OSS_DRIVER_MAX_PORTS];
+ jack_sample_t *outportbufs[OSS_DRIVER_MAX_PORTS];
+
+ JSList *capture_ports;
+ JSList *playback_ports;
+
+ jack_engine_t *engine;
+ jack_client_t *client;
+} oss_driver_t;
+
+
+#endif
+
--- jack-audio-connection-kit-0.80.0/drivers/oss/oss_driver.c 1970-01-01 02:00:00.000000000 +0200
+++ jackit/drivers/oss/oss_driver.c 2003-11-14 22:13:40.000000000 +0200
@@ -0,0 +1,694 @@
+/*
+
+ OSS driver for Jack
+ Copyright (C) 2003 Jussi Laako <jussi at sonarnerd.net>
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ MA 02111-1307 USA
+
+*/
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <math.h>
+#include <float.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/soundcard.h>
+
+#include <jack/types.h>
+#include <jack/internal.h>
+#include <jack/engine.h>
+#include <jack/time.h>
+
+#include "oss_driver.h"
+
+// #undef DEBUG_WAKEUP
+
+
+static void copy_and_convert_in (jack_sample_t *dst, void *src,
+ size_t nframes, int channel, int chcount, int bits)
+{
+ int srcidx;
+ int dstidx;
+ signed short *s16src = (signed short *) src;
+ signed int *s32src = (signed int *) src;
+ jack_sample_t scale;
+
+ srcidx = channel;
+ switch (bits)
+ {
+ case 16:
+ scale = 1.0f / 0x7fff;
+ for (dstidx = 0; dstidx < nframes; dstidx++)
+ {
+ dst[dstidx] = (jack_sample_t)
+ s16src[srcidx] * scale;
+ srcidx += chcount;
+ }
+ break;
+ case 24:
+ scale = 1.0f / 0x7fffff00;
+ for (dstidx = 0; dstidx < nframes; dstidx++)
+ {
+ dst[dstidx] = (jack_sample_t)
+ s32src[srcidx] * scale;
+ srcidx += chcount;
+ }
+ break;
+ case 32:
+ scale = 1.0f / 0x7fffffff;
+ for (dstidx = 0; dstidx < nframes; dstidx++)
+ {
+ dst[dstidx] = (jack_sample_t)
+ s32src[srcidx] * scale;
+ srcidx += chcount;
+ }
+ break;
+ }
+}
+
+
+static void copy_and_convert_out (void *dst, jack_sample_t *src,
+ size_t nframes, int channel, int chcount, int bits)
+{
+ int srcidx;
+ int dstidx;
+ signed short *s16dst = (signed short *) dst;
+ signed int *s32dst = (signed int *) dst;
+ jack_sample_t scale;
+
+ dstidx = channel;
+ switch (bits)
+ {
+ case 16:
+ scale = 0x7fff;
+ for (srcidx = 0; srcidx < nframes; srcidx++)
+ {
+ s16dst[dstidx] = (signed short)
+ (src[srcidx] * scale + 0.5f);
+ dstidx += chcount;
+ }
+ break;
+ case 24:
+ scale = 0x7fffff00;
+ for (srcidx = 0; srcidx < nframes; srcidx++)
+ {
+ s32dst[dstidx] = (signed int)
+ (src[srcidx] * scale + 0.5f);
+ dstidx += chcount;
+ }
+ break;
+ case 32:
+ scale = 0x7fffffff;
+ for (srcidx = 0; srcidx < nframes; srcidx++)
+ {
+ s32dst[dstidx] = (signed int)
+ (src[srcidx] * scale + 0.5f);
+ dstidx += chcount;
+ }
+ break;
+ }
+}
+
+
+static void set_fragment (int fd, int fragsize, int fragcount)
+{
+ int fragsize_2p;
+ int fragments;
+
+ fragsize_2p = (int) (log(fragsize) / log(2.0) + 0.5);
+ fragments = ((fragcount << 16) | (fragsize_2p & 0xffff));
+ if (ioctl(fd, SNDCTL_DSP_SETFRAGMENT, &fragments) < 0)
+ {
+ jack_error("OSS: failed to set fragment size: %s@%i",
+ __FILE__, __LINE__);
+ }
+}
+
+
+static int get_fragment (int fd)
+{
+ int fragsize;
+
+ if (ioctl(fd, SNDCTL_DSP_GETBLKSIZE, &fragsize) < 0)
+ {
+ jack_error("OSS: failed to get fragment size: %s@%i",
+ __FILE__, __LINE__);
+ return 0;
+ }
+ return fragsize;
+}
+
+
+static int oss_driver_attach (oss_driver_t *driver, jack_engine_t *engine)
+{
+ int port_flags;
+ unsigned int channel;
+ char channel_name[64];
+ jack_port_t *port;
+
+ driver->engine = engine;
+
+ engine->set_buffer_size(engine, driver->period_size);
+ engine->set_sample_rate(engine, driver->sample_rate);
+
+ port_flags = JackPortIsOutput|JackPortIsPhysical|JackPortIsTerminal;
+ for (channel = 0; channel < driver->capture_channels; channel++)
+ {
+ snprintf(channel_name, sizeof(channel_name),
+ "capture_%u", channel + 1);
+ port = jack_port_register(driver->client, channel_name,
+ JACK_DEFAULT_AUDIO_TYPE, port_flags, 0);
+ if (port == NULL)
+ {
+ jack_error("OSS: cannot register port for %s: %s@%i",
+ channel_name, __FILE__, __LINE__);
+ break;
+ }
+ driver->capture_ports =
+ jack_slist_append(driver->capture_ports, port);
+ }
+
+ port_flags = JackPortIsInput|JackPortIsPhysical|JackPortIsTerminal;
+ for (channel = 0; channel < driver->playback_channels; channel++)
+ {
+ snprintf(channel_name, sizeof(channel_name),
+ "playback_%u", channel + 1);
+ port = jack_port_register(driver->client, channel_name,
+ JACK_DEFAULT_AUDIO_TYPE, port_flags, 0);
+ if (port == NULL)
+ {
+ jack_error("OSS: cannot register port for %s: %s@%i",
+ channel_name, __FILE__, __LINE__);
+ break;
+ }
+ driver->playback_ports =
+ jack_slist_append(driver->playback_ports, port);
+ }
+
+ jack_activate(driver->client);
+
+ return 0;
+}
+
+
+static int oss_driver_detach (oss_driver_t *driver, jack_engine_t *engine)
+{
+ JSList *node;
+
+ if (driver->engine == NULL)
+ return -1;
+
+ node = driver->capture_ports;
+ while (node != NULL)
+ {
+ jack_port_unregister(driver->client,
+ ((jack_port_t *) node->data));
+ node = jack_slist_next(node);
+ }
+ jack_slist_free(driver->capture_ports);
+ driver->capture_ports = NULL;
+
+ node = driver->playback_ports;
+ while (node != NULL)
+ {
+ jack_port_unregister(driver->client,
+ ((jack_port_t *) node->data));
+ node = jack_slist_next(node);
+ }
+ jack_slist_free(driver->playback_ports);
+ driver->playback_ports = NULL;
+
+ driver->engine = NULL;
+
+ return 0;
+}
+
+
+static int oss_driver_start (oss_driver_t *driver)
+{
+ int format;
+ int channels;
+ int samplerate;
+ int infd = driver->infd;
+ int outfd = driver->outfd;
+ unsigned int channel;
+ size_t samplesize;
+ size_t fragsize;
+ const char *indev = driver->indev;
+ const char *outdev = driver->outdev;
+
+ switch (driver->bits)
+ {
+ case 0:
+ samplesize = sizeof(unsigned int);
+ break;
+ case 24:
+ case 32:
+ samplesize = sizeof(int);
+ break;
+ case 16:
+ default:
+ samplesize = sizeof(short);
+ break;
+ }
+ if (strcmp(indev, outdev) != 0)
+ {
+ infd = open(indev, O_RDONLY);
+ outfd = open(outdev, O_WRONLY);
+ if (infd < 0)
+ {
+ jack_error(
+ "OSS: failed to open input device %s: %s@%i",
+ indev, __FILE__, __LINE__);
+ }
+ if (outfd < 0)
+ {
+ jack_error(
+ "OSS: failed to open output device %s: %s@%i",
+ outdev, __FILE__, __LINE__);
+ }
+ fragsize = driver->period_size * driver->capture_channels *
+ samplesize;
+ //set_fragment(infd, fragsize, 0xffff / fragsize);
+ set_fragment(infd, fragsize, 2);
+ fragsize = driver->period_size * driver->playback_channels *
+ samplesize;
+ //set_fragment(outfd, fragsize, 0xffff / fragsize);
+ set_fragment(outfd, fragsize, 2);
+ }
+ else
+ {
+ infd = outfd = open(indev, O_RDWR);
+ if (infd < 0)
+ {
+ jack_error(
+ "OSS: failed to open device %s: %s@%i",
+ indev, __FILE__, __LINE__);
+ }
+ fragsize = driver->period_size * driver->capture_channels *
+ samplesize;
+ //set_fragment(infd, fragsize, 0xffff / fragsize);
+ set_fragment(infd, fragsize, 2);
+ if (ioctl(infd, SNDCTL_DSP_SETDUPLEX, 0) < 0)
+ {
+ jack_error(
+ "OSS: failed to enable full duplex for %s: %s@%i",
+ indev, __FILE__, __LINE__);
+ }
+ }
+ driver->infd = infd;
+ driver->outfd = outfd;
+
+ format = driver->format;
+ if (ioctl(infd, SNDCTL_DSP_SETFMT, &format) < 0)
+ jack_error("OSS: failed to set format for %s: %s@%i",
+ indev, __FILE__, __LINE__);
+ channels = driver->capture_channels;
+ if (ioctl(infd, SNDCTL_DSP_CHANNELS, &channels) < 0)
+ jack_error("OSS: failed to set channels for %s: %s@%i",
+ indev, __FILE__, __LINE__);
+ samplerate = driver->sample_rate;
+ if (ioctl(infd, SNDCTL_DSP_SPEED, &samplerate) < 0)
+ jack_error("OSS: failed to set samplerate for %s: %s@%i",
+ indev, __FILE__, __LINE__);
+ printf("oss_driver: %s : 0x%x/%i/%i (%i)\n", indev,
+ format, channels, samplerate, get_fragment(infd));
+
+ if (infd != outfd)
+ {
+ format = driver->format;
+ if (ioctl(outfd, SNDCTL_DSP_SETFMT, &format) < 0)
+ jack_error(
+ "OSS: failed to set format for %s: %s@%i",
+ outdev, __FILE__, __LINE__);
+ channels = driver->playback_channels;
+ if (ioctl(outfd, SNDCTL_DSP_CHANNELS, &channels) < 0)
+ jack_error(
+ "OSS: failed to set channels for %s: %s@%i",
+ outdev, __FILE__, __LINE__);
+ samplerate = driver->sample_rate;
+ if (ioctl(outfd, SNDCTL_DSP_SPEED, &samplerate) < 0)
+ jack_error(
+ "OSS: failed to set samplerate for %s: %s@%i",
+ outdev, __FILE__, __LINE__);
+ printf("oss_driver: %s : 0x%x/%i/%i (%i)\n", outdev,
+ format, channels, samplerate,
+ get_fragment(outfd));
+ }
+
+ driver->indevbufsize = driver->period_size *
+ driver->capture_channels * samplesize;
+ driver->outdevbufsize = driver->period_size *
+ driver->playback_channels * samplesize;
+ driver->indevbuf = malloc(driver->indevbufsize);
+ driver->outdevbuf = malloc(driver->outdevbufsize);
+ if (driver->indevbuf == NULL || driver->outdevbuf == NULL)
+ {
+ jack_error("OSS: malloc() failed: %s@%i", __FILE__, __LINE__);
+ return -1;
+
+ }
+ memset(driver->indevbuf, 0x00, driver->indevbufsize);
+ memset(driver->outdevbuf, 0x00, driver->outdevbufsize);
+ printf("oss_driver: indevbuf %u B, outdevbuf %u B\n",
+ driver->indevbufsize, driver->outdevbufsize);
+
+ driver->portbufsize = driver->period_size * sizeof(jack_sample_t);
+ for (channel = 0; channel < driver->capture_channels; channel++)
+ {
+ driver->inportbufs[channel] = (jack_sample_t *)
+ malloc(driver->portbufsize);
+ if (driver->inportbufs[channel] == NULL)
+ {
+ jack_error("OSS: malloc() failed: %s@%i",
+ __FILE__, __LINE__);
+ return -1;
+ }
+ memset(driver->inportbufs[channel], 0x00,
+ driver->portbufsize);
+ }
+ for (channel = 0; channel < driver->playback_channels; channel++)
+ {
+ driver->outportbufs[channel] = (jack_sample_t *)
+ malloc(driver->portbufsize);
+ if (driver->outportbufs[channel] == NULL)
+ {
+ jack_error("OSS: malloc() failed: %s@%i",
+ __FILE__, __LINE__);
+ return -1;
+ }
+ memset(driver->outportbufs[channel], 0x00,
+ driver->portbufsize);
+ }
+ printf("oss_driver: %u period buffers of size %u B\n",
+ driver->capture_channels + driver->playback_channels,
+ driver->portbufsize);
+
+ return 0;
+}
+
+
+static int oss_driver_stop (oss_driver_t *driver)
+{
+ unsigned int channel;
+
+ if (driver->outfd >= 0 && driver->outfd != driver->infd)
+ {
+ close(driver->outfd);
+ driver->outfd = -1;
+ }
+ if (driver->infd >= 0)
+ {
+ close(driver->infd);
+ driver->infd = -1;
+ }
+
+ for (channel = 0; channel < driver->capture_channels; channel++)
+ {
+ if (driver->inportbufs[channel] != NULL)
+ {
+ free(driver->inportbufs[channel]);
+ driver->inportbufs[channel] = NULL;
+ }
+ }
+ for (channel = 0; channel < driver->playback_channels; channel++)
+ {
+ if (driver->outportbufs[channel] != NULL)
+ {
+ free(driver->outportbufs[channel]);
+ driver->outportbufs[channel] = NULL;
+ }
+ }
+ if (driver->indevbuf != NULL)
+ {
+ free(driver->indevbuf);
+ driver->indevbuf = NULL;
+ }
+ if (driver->outdevbuf != NULL)
+ {
+ free(driver->outdevbuf);
+ driver->outdevbuf = NULL;
+ }
+
+ return 0;
+}
+
+
+static int oss_driver_read (oss_driver_t *driver, jack_nframes_t nframes)
+{
+ int channel;
+ jack_sample_t *portbuf;
+ JSList *node;
+ jack_port_t *port;
+
+ if (nframes != driver->period_size)
+ {
+ jack_error(
+ "OSS: read failed nframes != period_size (%u/%u): %s@%i",
+ nframes, driver->period_size, __FILE__, __LINE__);
+ return -1;
+ }
+
+ node = driver->capture_ports;
+ channel = 0;
+ while (node != NULL)
+ {
+ port = (jack_port_t *) node->data;
+
+ if (jack_port_connected(port))
+ {
+ portbuf = jack_port_get_buffer(port, nframes);
+ copy_and_convert_in(portbuf, driver->indevbuf,
+ nframes, channel,
+ driver->capture_channels,
+ driver->bits);
+ }
+
+ node = jack_slist_next(node);
+ channel++;
+ }
+
+ return 0;
+}
+
+
+static int oss_driver_write (oss_driver_t *driver, jack_nframes_t nframes)
+{
+ int channel;
+ jack_sample_t *portbuf;
+ JSList *node;
+ jack_port_t *port;
+
+ if (nframes != driver->period_size)
+ {
+ jack_error(
+ "OSS: write failed nframes != period_size (%u/%u): %s@%i",
+ nframes, driver->period_size, __FILE__, __LINE__);
+ return -1;
+ }
+
+ node = driver->playback_ports;
+ channel = 0;
+ while (node != NULL)
+ {
+ port = (jack_port_t *) node->data;
+
+ if (jack_port_connected(port))
+ {
+ portbuf = jack_port_get_buffer(port, nframes);
+ copy_and_convert_out(driver->outdevbuf, portbuf,
+ nframes, channel,
+ driver->playback_channels,
+ driver->bits);
+ }
+
+ node = jack_slist_next(node);
+ channel++;
+ }
+
+ return 0;
+}
+
+
+static int oss_driver_null_cycle (oss_driver_t *driver, jack_nframes_t nframes)
+{
+ return 0;
+}
+
+
+static jack_nframes_t oss_driver_wait (oss_driver_t *driver, int fd,
+ int *status, float *delayed_usecs)
+{
+ *status = 0;
+ *delayed_usecs = 0;
+
+ if (write(driver->outfd, driver->outdevbuf, driver->outdevbufsize) <
+ (ssize_t) driver->outdevbufsize)
+ {
+ //jack_error("OSS: write() failed: %s@%i", __FILE__, __LINE__);
+ oss_driver_stop(driver);
+ *status = 1;
+ }
+
+ if (read(driver->infd, driver->indevbuf, driver->indevbufsize) <
+ (ssize_t) driver->indevbufsize)
+ {
+ //jack_error("OSS: read() failed: %s@%i", __FILE__, __LINE__);
+ oss_driver_stop(driver);
+ *status = 1;
+ }
+
+ driver->last_wait_ust = jack_get_microseconds();
+
+ return driver->period_size;
+}
+
+
+/* - */
+
+
+const char driver_client_name[] = "oss";
+
+
+void driver_finish (jack_driver_t *);
+
+
+jack_driver_t * driver_initialize (jack_client_t *client,
+ int argc, char *argv[])
+{
+ int opt;
+ int bits = OSS_DRIVER_DEF_BITS;
+ jack_nframes_t sample_rate = OSS_DRIVER_DEF_FS;
+ jack_nframes_t period_size = OSS_DRIVER_DEF_BLKSIZE;
+ unsigned int capture_channels = OSS_DRIVER_DEF_INS;
+ unsigned int playback_channels = OSS_DRIVER_DEF_OUTS;
+
+ oss_driver_t *driver;
+
+ driver = (oss_driver_t *) malloc(sizeof(oss_driver_t));
+ if (driver == NULL)
+ {
+ jack_error("OSS: malloc() failed: %s@%i", __FILE__, __LINE__);
+ return NULL;
+ }
+ jack_driver_init((jack_driver_t *) driver);
+
+ driver->attach = (JackDriverAttachFunction) oss_driver_attach;
+ driver->detach = (JackDriverDetachFunction) oss_driver_detach;
+ driver->start = (JackDriverStartFunction) oss_driver_start;
+ driver->stop = (JackDriverStopFunction) oss_driver_stop;
+ driver->read = (JackDriverReadFunction) oss_driver_read;
+ driver->write = (JackDriverWriteFunction) oss_driver_write;
+ driver->null_cycle = (JackDriverNullCycleFunction)
+ oss_driver_null_cycle;
+ driver->wait = (JackDriverWaitFunction) oss_driver_wait;
+
+ driver->indev = NULL;
+ driver->outdev = NULL;
+ opt = 1;
+ while (opt < (argc - 1))
+ {
+ if (strcmp(argv[opt], "-s") == 0)
+ sample_rate = (jack_nframes_t) atol(argv[++opt]);
+ if (strcmp(argv[opt], "-b") == 0)
+ period_size = (jack_nframes_t) atol(argv[++opt]);
+ if (strcmp(argv[opt], "-w") == 0)
+ bits = atoi(argv[++opt]);
+ if (strcmp(argv[opt], "-c") == 0)
+ capture_channels = (unsigned int) atoi(argv[++opt]);
+ if (strcmp(argv[opt], "-p") == 0)
+ playback_channels = (unsigned int) atoi(argv[++opt]);
+ if (strcmp(argv[opt], "-i") == 0)
+ driver->indev = strdup(argv[++opt]);
+ if (strcmp(argv[opt], "-o") == 0)
+ driver->outdev = strdup(argv[++opt]);
+ if (strcmp(argv[opt], "-h") == 0)
+ {
+ puts("-s <fs>\tsample rate");
+ puts("-b <size>\tperiod size");
+ puts("-w <bits>\tword length");
+ puts("-c <chs>\tcapture channels");
+ puts("-p <chs>\tplayback channels");
+ puts("-i <dev>\tcapture device");
+ puts("-o <dev>\tplayback device");
+ puts("-h\tthis help");
+ }
+ opt++;
+ }
+
+ driver->sample_rate = sample_rate;
+ driver->period_size = period_size;
+ driver->bits = bits;
+ driver->capture_channels = capture_channels;
+ driver->playback_channels = playback_channels;
+
+ driver->period_usecs =
+ ((double) period_size / (double) sample_rate) * 1e6;
+ driver->last_wait_ust = 0;
+
+ driver->finish = driver_finish;
+
+ if (driver->indev == NULL)
+ driver->indev = strdup("/dev/dsp");
+ if (driver->outdev == NULL)
+ driver->outdev = strdup(driver->indev);
+ driver->infd = -1;
+ driver->outfd = -1;
+ switch (driver->bits)
+ {
+ case 0:
+ driver->format = AFMT_SPDIF_RAW;
+ break;
+ case 24:
+ driver->format = AFMT_S24_NE;
+ break;
+ case 32:
+ driver->format = AFMT_S32_NE;
+ break;
+ case 16:
+ default:
+ driver->format = AFMT_S16_NE;
+ break;
+ }
+
+ driver->indevbuf = driver->outdevbuf = NULL;
+ memset(driver->inportbufs, 0x00, sizeof(driver->inportbufs));
+ memset(driver->outportbufs, 0x00, sizeof(driver->outportbufs));
+
+ driver->capture_ports = NULL;
+ driver->playback_ports = NULL;
+
+ driver->engine = NULL;
+ driver->client = client;
+
+ return ((jack_driver_t *) driver);
+}
+
+
+void driver_finish (jack_driver_t *driver)
+{
+ free(((oss_driver_t *) driver)->indev);
+ free(((oss_driver_t *) driver)->outdev);
+ free(driver);
+}
+
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