$NetBSD: patch-aa,v 1.5 1998/11/05 02:46:09 mycroft Exp $
--- /dev/null Wed Nov 4 21:26:51 1998
+++ src/auddev_netbsd.c Wed Nov 4 21:27:03 1998
@@ -0,0 +1,423 @@
+/*
+ * FILE: netbsd.c
+ * PROGRAM: RAT
+ * AUTHOR: Isidor Kouvelas
+ * MODIFIED: Colin Perkins
+ *
+ * $Revision: 1.5 $
+ * $Date: 1998/11/05 02:46:09 $
+ *
+ * Copyright (c) 1995,1996 University College London
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, is permitted, for non-commercial use only, provided
+ * that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the Computer Science
+ * Department at University College London
+ * 4. Neither the name of the University nor of the Department may be used
+ * to endorse or promote products derived from this software without
+ * specific prior written permission.
+ * Use of this software for commercial purposes is explicitly forbidden
+ * unless prior written permission is obtained from the authors.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+
+
+#include "assert.h"
+#include "bat_include.h"
+#ifdef __NetBSD__
+
+static audio_info_t dev_info;
+static int mulaw_device = FALSE; /* TRUE if the hardware can only do 8bit mulaw sampling */
+
+#define bat_to_device(x) ((x) * AUDIO_MAX_GAIN / MAX_AMP)
+#define device_to_bat(x) ((x) * MAX_AMP / AUDIO_MAX_GAIN)
+
+/* Try to open the audio device. */
+/* Returns a valid file descriptor if ok, -1 otherwise. */
+int
+audio_open(audio_format format)
+{
+ audio_info_t tmp_info;
+
+ int audio_fd = open("/dev/audio", O_RDWR | O_NDELAY);
+
+ if (audio_fd > 0) {
+ AUDIO_INITINFO(&dev_info);
+ dev_info.monitor_gain = 0;
+ dev_info.play.sample_rate = format.sample_rate;
+ dev_info.record.sample_rate = format.sample_rate;
+ dev_info.play.channels = format.num_channels;
+ dev_info.record.channels = format.num_channels;
+ dev_info.play.precision = format.bits_per_sample;
+ dev_info.record.precision = format.bits_per_sample;
+ dev_info.play.gain = (AUDIO_MAX_GAIN - AUDIO_MIN_GAIN) * 0.75;
+ dev_info.record.gain = (AUDIO_MAX_GAIN - AUDIO_MIN_GAIN) * 0.75;
+ dev_info.play.port = AUDIO_HEADPHONE;
+ dev_info.record.port = AUDIO_MICROPHONE;
+ dev_info.play.balance = AUDIO_MID_BALANCE;
+ dev_info.record.balance = AUDIO_MID_BALANCE;
+#ifdef SunOS_5
+ dev_info.play.buffer_size = DEVICE_BUF_UNIT;
+ dev_info.record.buffer_size = DEVICE_BUF_UNIT;
+#endif
+ switch (format.encoding) {
+ case DEV_PCMU:
+ dev_info.record.encoding = AUDIO_ENCODING_ULAW;
+ dev_info.play.encoding = AUDIO_ENCODING_ULAW;
+ break;
+ case DEV_L8:
+ assert(format.bits_per_sample == 8);
+ dev_info.record.encoding = AUDIO_ENCODING_LINEAR;
+ dev_info.play.encoding = AUDIO_ENCODING_LINEAR;
+ break;
+ case DEV_L16:
+ assert(format.bits_per_sample == 16);
+ dev_info.record.encoding = AUDIO_ENCODING_LINEAR;
+ dev_info.play.encoding = AUDIO_ENCODING_LINEAR;
+ break;
+ default:
+ printf("ERROR: Unknown audio encoding in audio_open!\n");
+ abort();
+ }
+
+ memcpy(&tmp_info, &dev_info, sizeof(audio_info_t));
+ if (ioctl(audio_fd, AUDIO_SETINFO, (caddr_t)&tmp_info) < 0) {
+ if (format.encoding == DEV_L16) {
+#ifdef DEBUG
+ printf("Old hardware detected: can't do 16 bit audio, trying 8 bit...\n");
+#endif
+ dev_info.play.precision = 8;
+ dev_info.record.precision = 8;
+ dev_info.record.encoding = AUDIO_ENCODING_ULAW;
+ dev_info.play.encoding = AUDIO_ENCODING_ULAW;
+ if (ioctl(audio_fd, AUDIO_SETINFO, (caddr_t)&dev_info) < 0) {
+ perror("Setting MULAW audio paramterts");
+ return -1;
+ }
+ mulaw_device = TRUE;
+ } else {
+ perror("Setting audio paramterts");
+ return -1;
+ }
+ }
+ return audio_fd;
+ } else {
+ /* Because we opened the device with O_NDELAY
+ * the waiting flag was not updated so update
+ * it manually using the audioctl device...
+ */
+ audio_fd = open("/dev/audioctl", O_RDWR);
+ AUDIO_INITINFO(&dev_info);
+ dev_info.play.waiting = 1;
+ if (ioctl(audio_fd, AUDIO_SETINFO, (caddr_t)&dev_info) < 0) {
+#ifdef DEBUG
+ perror("Setting requests");
+#endif
+ }
+ close(audio_fd);
+ return -1;
+ }
+}
+
+/* Close the audio device */
+void
+audio_close(int audio_fd)
+{
+ close(audio_fd);
+ audio_fd = -1;
+}
+
+/* Flush input buffer */
+void
+audio_drain(int audio_fd)
+{
+ ioctl(audio_fd, AUDIO_FLUSH, 0);
+}
+
+/* Gain and volume values are in the range 0 - MAX_AMP */
+
+void
+audio_set_gain(int audio_fd, int gain)
+{
+ if (audio_fd <= 0)
+ return;
+
+ AUDIO_INITINFO(&dev_info);
+ dev_info.record.gain = bat_to_device(gain);
+ if (ioctl(audio_fd, AUDIO_SETINFO, (caddr_t)&dev_info) < 0)
+ perror("Setting gain");
+}
+
+int
+audio_get_gain(int audio_fd)
+{
+ if (audio_fd <= 0)
+ return (0);
+
+ AUDIO_INITINFO(&dev_info);
+ if (ioctl(audio_fd, AUDIO_GETINFO, (caddr_t)&dev_info) < 0)
+ perror("Getting gain");
+ return (device_to_bat(dev_info.record.gain));
+}
+
+void
+audio_set_volume(int audio_fd, int vol)
+{
+ if (audio_fd <= 0)
+ return;
+
+ AUDIO_INITINFO(&dev_info);
+ dev_info.play.gain = bat_to_device(vol);
+ if (ioctl(audio_fd, AUDIO_SETINFO, (caddr_t)&dev_info) < 0)
+ perror("Setting volume");
+}
+
+int
+audio_get_volume(int audio_fd)
+{
+ if (audio_fd <= 0)
+ return (0);
+
+ AUDIO_INITINFO(&dev_info);
+ if (ioctl(audio_fd, AUDIO_GETINFO, (caddr_t)&dev_info) < 0)
+ perror("Getting gain");
+ return (device_to_bat(dev_info.play.gain));
+}
+
+int
+audio_read(int audio_fd, sample *buf, int samples)
+{
+ int i, len;
+ static u_char mulaw_buf[DEVICE_REC_BUF];
+ u_char *p;
+
+ if (mulaw_device) {
+ if ((len = read(audio_fd, mulaw_buf, samples)) < 0) {
+ return 0;
+ } else {
+ p = mulaw_buf;
+ for (i = 0; i < len; i++) {
+ *buf++ = u2s((unsigned)*p);
+ p++;
+ }
+ return (len);
+ }
+ } else {
+ if ((len = read(audio_fd, (char *)buf, samples * BYTES_PER_SAMPLE)) < 0) {
+ return 0;
+ } else {
+ return (len / BYTES_PER_SAMPLE);
+ }
+ }
+}
+
+int
+audio_write(int audio_fd, sample *buf, int samples)
+{
+ int i, done, len, bps;
+ unsigned char *p, *q;
+ static u_char mulaw_buf[DEVICE_REC_BUF];
+
+ if (mulaw_device) {
+ p = mulaw_buf;
+ for (i = 0; i < samples; i++)
+ *p++ = lintomulaw[(unsigned short)*buf++];
+ p = mulaw_buf;
+ len = samples;
+ bps = 1;
+ } else {
+ p = (char *)buf;
+ len = samples * BYTES_PER_SAMPLE;
+ bps = BYTES_PER_SAMPLE;
+ }
+
+ q = p;
+ while (1) {
+ if ((done = write(audio_fd, p, len)) == len)
+ break;
+ if (errno != EINTR)
+ return (samples - ((len - done) / bps));
+ len -= done;
+ p += done;
+ }
+
+ return (samples);
+}
+
+/* Set ops on audio device to be non-blocking */
+void
+audio_non_block(int audio_fd)
+{
+ int on = 1;
+
+ if (audio_fd <= 0)
+ return;
+
+ if (ioctl(audio_fd, FIONBIO, (char *)&on) < 0)
+ fprintf(stderr, "Failed to set non blocking mode on audio device!\n");
+}
+
+/* Set ops on audio device to block */
+void
+audio_block(int audio_fd)
+{
+ int on = 0;
+
+ if (audio_fd <= 0)
+ return;
+
+ if (ioctl(audio_fd, FIONBIO, (char *)&on) < 0)
+ fprintf(stderr, "Failed to set blocking mode on audio device!\n");
+}
+
+void
+audio_set_oport(int audio_fd, int port)
+{
+ if (audio_fd <= 0)
+ return;
+
+ AUDIO_INITINFO(&dev_info);
+ /* AUDIO_SPEAKER or AUDIO_HEADPHONE */
+ dev_info.play.port = port;
+ if (ioctl(audio_fd, AUDIO_SETINFO, (caddr_t)&dev_info) < 0)
+ perror("Setting port");
+}
+
+int
+audio_get_oport(int audio_fd)
+{
+ if (audio_fd <= 0)
+ return (AUDIO_SPEAKER);
+
+ AUDIO_INITINFO(&dev_info);
+ if (ioctl(audio_fd, AUDIO_GETINFO, (caddr_t)&dev_info) < 0)
+ perror("Getting port");
+ return (dev_info.play.port);
+}
+
+int
+audio_next_oport(int audio_fd)
+{
+ int port;
+
+ if (audio_fd <= 0)
+ return (AUDIO_SPEAKER);
+
+ AUDIO_INITINFO(&dev_info);
+ if (ioctl(audio_fd, AUDIO_GETINFO, (caddr_t)&dev_info) < 0)
+ perror("Getting port");
+
+
+ port = dev_info.play.port;
+ port <<= 1;
+
+ /* It is either wrong on some machines or i got something wrong! */
+ if (dev_info.play.avail_ports < 3)
+ dev_info.play.avail_ports = 3;
+
+ if ((port & dev_info.play.avail_ports) == 0)
+ port = 1;
+
+ AUDIO_INITINFO(&dev_info);
+ dev_info.play.port = port;
+ if (ioctl(audio_fd, AUDIO_SETINFO, (caddr_t)&dev_info) < 0)
+ perror("Setting port");
+
+ return (port);
+}
+
+void
+audio_set_iport(int audio_fd, int port)
+{
+ if (audio_fd <= 0)
+ return;
+
+ AUDIO_INITINFO(&dev_info);
+ dev_info.record.port = port;
+ if (ioctl(audio_fd, AUDIO_SETINFO, (caddr_t)&dev_info) < 0)
+ perror("Setting port");
+}
+
+int
+audio_get_iport(int audio_fd)
+{
+ if (audio_fd <= 0)
+ return (AUDIO_SPEAKER);
+
+ AUDIO_INITINFO(&dev_info);
+ if (ioctl(audio_fd, AUDIO_GETINFO, (caddr_t)&dev_info) < 0)
+ perror("Getting port");
+ return (dev_info.record.port);
+}
+
+int
+audio_next_iport(int audio_fd)
+{
+ int port;
+
+ if (audio_fd <= 0)
+ return (AUDIO_SPEAKER);
+
+ AUDIO_INITINFO(&dev_info);
+ if (ioctl(audio_fd, AUDIO_GETINFO, (caddr_t)&dev_info) < 0)
+ perror("Getting port");
+
+ port = dev_info.record.port;
+ port <<= 1;
+
+ if (dev_info.record.avail_ports > 3)
+ dev_info.record.avail_ports = 3;
+
+ /* Hack to fix Sparc 5 SOLARIS bug */
+ if ((port & dev_info.record.avail_ports) == 0)
+ port = 1;
+
+ AUDIO_INITINFO(&dev_info);
+ dev_info.record.port = port;
+ if (ioctl(audio_fd, AUDIO_SETINFO, (caddr_t)&dev_info) < 0)
+ perror("Setting port");
+
+ return (port);
+}
+
+void
+audio_switch_out(int audio_fd, cushion_struct *ap)
+{
+ /* Full duplex device: do nothing! */
+}
+
+void
+audio_switch_in(int audio_fd)
+{
+ /* Full duplex device: do nothing! */
+}
+
+int
+audio_duplex(int audio_fd)
+{
+ return 1;
+}
+
+#endif /* __NetBSD__ */
+