path: root/mbone/rat/patches/patch-aa

$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__ */
+