trunk/rdesktop/rdpsnd_sun.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Sound Channel Process Functions - Sun
   Copyright (C) Matthew Chapman 2003
   Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003
   Copyright (C) Michael Gernoth mike@zerfleddert.de 2003-2006

   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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#include "rdesktop.h"
#include "rdpsnd.h"
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/audioio.h>

#if (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
#include <stropts.h>
#endif

#define DEFAULTDEVICE   "/dev/audio"

static BOOL g_reopened;
static short g_samplewidth;
static char *dsp_dev;

BOOL
sun_open(void)
{
        if ((g_dsp_fd = open(dsp_dev, O_WRONLY | O_NONBLOCK)) == -1)
        {
                perror(dsp_dev);
                return False;
        }

        /* Non-blocking so that user interface is responsive */
        fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) | O_NONBLOCK);

        rdpsnd_queue_init();
        g_reopened = True;

        return True;
}

void
sun_close(void)
{
        /* Ack all remaining packets */
        while (!rdpsnd_queue_empty())
        {
                rdpsnd_send_completion(rdpsnd_queue_current_packet()->tick,
                                       rdpsnd_queue_current_packet()->index);
                rdpsnd_queue_next();
        }

#if defined I_FLUSH && defined FLUSHW
        /* Flush the audiobuffer */
        ioctl(g_dsp_fd, I_FLUSH, FLUSHW);
#endif
#if defined AUDIO_FLUSH
        ioctl(g_dsp_fd, AUDIO_FLUSH, NULL);
#endif
        close(g_dsp_fd);
}

BOOL
sun_format_supported(WAVEFORMATEX * pwfx)
{
        if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
                return False;
        if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
                return False;
        if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
                return False;

        return True;
}

BOOL
sun_set_format(WAVEFORMATEX * pwfx)
{
        audio_info_t info;

        ioctl(g_dsp_fd, AUDIO_DRAIN, 0);
        AUDIO_INITINFO(&info);


        if (pwfx->wBitsPerSample == 8)
        {
                info.play.encoding = AUDIO_ENCODING_LINEAR8;
        }
        else if (pwfx->wBitsPerSample == 16)
        {
                info.play.encoding = AUDIO_ENCODING_LINEAR;
        }

        g_samplewidth = pwfx->wBitsPerSample / 8;

        if (pwfx->nChannels == 1)
        {
                info.play.channels = 1;
        }
        else if (pwfx->nChannels == 2)
        {
                info.play.channels = 2;
                g_samplewidth *= 2;
        }

        info.play.sample_rate = pwfx->nSamplesPerSec;
        info.play.precision = pwfx->wBitsPerSample;
        info.play.samples = 0;
        info.play.eof = 0;
        info.play.error = 0;
        g_reopened = True;

        if (ioctl(g_dsp_fd, AUDIO_SETINFO, &info) == -1)
        {
                perror("AUDIO_SETINFO");
                close(g_dsp_fd);
                return False;
        }

        return True;
}

void
sun_volume(uint16 left, uint16 right)
{
        audio_info_t info;
        uint balance;
        uint volume;

        AUDIO_INITINFO(&info);

        volume = (left > right) ? left : right;

        if (volume / AUDIO_MID_BALANCE != 0)
        {
                balance =
                        AUDIO_MID_BALANCE - (left / (volume / AUDIO_MID_BALANCE)) +
                        (right / (volume / AUDIO_MID_BALANCE));
        }
        else
        {
                balance = AUDIO_MID_BALANCE;
        }

        info.play.gain = volume / (65536 / AUDIO_MAX_GAIN);
        info.play.balance = balance;

        if (ioctl(g_dsp_fd, AUDIO_SETINFO, &info) == -1)
        {
                perror("AUDIO_SETINFO");
                return;
        }
}

void
sun_play(void)
{
        struct audio_packet *packet;
        audio_info_t info;
        ssize_t len;
        unsigned int i;
        STREAM out;
        static BOOL sentcompletion = True;
        static uint32 samplecnt = 0;
        static uint32 numsamples;

        while (1)
        {
                if (g_reopened)
                {
                        /* Device was just (re)openend */
                        samplecnt = 0;
                        sentcompletion = True;
                        g_reopened = False;
                }

                if (rdpsnd_queue_empty())
                {
                        g_dsp_busy = 0;
                        return;
                }

                packet = rdpsnd_queue_current_packet();
                out = &packet->s;

                if (sentcompletion)
                {
                        sentcompletion = False;
                        numsamples = (out->end - out->p) / g_samplewidth;
                }

                len = 0;

                if (out->end != out->p)
                {
                        len = write(g_dsp_fd, out->p, out->end - out->p);
                        if (len == -1)
                        {
                                if (errno != EWOULDBLOCK)
                                        perror("write audio");
                                g_dsp_busy = 1;
                                return;
                        }
                }

                out->p += len;
                if (out->p == out->end)
                {
                        if (ioctl(g_dsp_fd, AUDIO_GETINFO, &info) == -1)
                        {
                                perror("AUDIO_GETINFO");
                                return;
                        }

                        /* Ack the packet, if we have played at least 70% */
                        if (info.play.samples >= samplecnt + ((numsamples * 7) / 10))
                        {
                                samplecnt += numsamples;
                                /* We need to add 50 to tell windows that time has passed while
                                 * playing this packet */
                                rdpsnd_send_completion(packet->tick + 50, packet->index);
                                rdpsnd_queue_next();
                                sentcompletion = True;
                        }
                        else
                        {
                                g_dsp_busy = 1;
                                return;
                        }
                }
        }
}

struct audio_driver *
sun_register(char *options)
{
        static struct audio_driver sun_driver;

        sun_driver.wave_out_write = rdpsnd_queue_write;
        sun_driver.wave_out_open = sun_open;
        sun_driver.wave_out_close = sun_close;
        sun_driver.wave_out_format_supported = sun_format_supported;
        sun_driver.wave_out_set_format = sun_set_format;
        sun_driver.wave_out_volume = sun_volume;
        sun_driver.wave_out_play = sun_play;
        sun_driver.name = xstrdup("sun");
        sun_driver.description =
                xstrdup("SUN/BSD output driver, default device: " DEFAULTDEVICE " or $AUDIODEV");
        sun_driver.need_byteswap_on_be = 1;
        sun_driver.need_resampling = 0;
        sun_driver.next = NULL;

        if (options)
        {
                dsp_dev = xstrdup(options);
        }
        else
        {
                dsp_dev = getenv("AUDIODEV");

                if (dsp_dev == NULL)
                {
                        dsp_dev = xstrdup(DEFAULTDEVICE);
                }
        }

        return &sun_driver;
}
1	/* -- c-basic-offset: 8 --
2	rdesktop: A Remote Desktop Protocol client.
3	Sound Channel Process Functions - Sun
4	Copyright (C) Matthew Chapman 2003
5	Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003
6	Copyright (C) Michael Gernoth mike@zerfleddert.de 2003-2006
7
8	This program is free software; you can redistribute it and/or modify
9	it under the terms of the GNU General Public License as published by
10	the Free Software Foundation; either version 2 of the License, or
11	(at your option) any later version.
12
13	This program is distributed in the hope that it will be useful,
14	but WITHOUT ANY WARRANTY; without even the implied warranty of
15	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16	GNU General Public License for more details.
17
18	You should have received a copy of the GNU General Public License
19	along with this program; if not, write to the Free Software
20	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21	*/
22
23	#include "rdesktop.h"
24	#include "rdpsnd.h"
25	#include <unistd.h>
26	#include <fcntl.h>
27	#include <errno.h>
28	#include <sys/ioctl.h>
29	#include <sys/audioio.h>
30
31	#if (defined(sun) && (defined(__svr4__) \|\| defined(__SVR4)))
32	#include <stropts.h>
33	#endif
34
35	#define DEFAULTDEVICE "/dev/audio"
36
37	static BOOL g_reopened;
38	static short g_samplewidth;
39	static char *dsp_dev;
40
41	BOOL
42	sun_open(void)
43	{
44	if ((g_dsp_fd = open(dsp_dev, O_WRONLY \| O_NONBLOCK)) == -1)
45	{
46	perror(dsp_dev);
47	return False;
48	}
49
50	/* Non-blocking so that user interface is responsive */
51	fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) \| O_NONBLOCK);
52
53	rdpsnd_queue_init();
54	g_reopened = True;
55
56	return True;
57	}
58
59	void
60	sun_close(void)
61	{
62	/* Ack all remaining packets */
63	while (!rdpsnd_queue_empty())
64	{
65	rdpsnd_send_completion(rdpsnd_queue_current_packet()->tick,
66	rdpsnd_queue_current_packet()->index);
67	rdpsnd_queue_next();
68	}
69
70	#if defined I_FLUSH && defined FLUSHW
71	/* Flush the audiobuffer */
72	ioctl(g_dsp_fd, I_FLUSH, FLUSHW);
73	#endif
74	#if defined AUDIO_FLUSH
75	ioctl(g_dsp_fd, AUDIO_FLUSH, NULL);
76	#endif
77	close(g_dsp_fd);
78	}
79
80	BOOL
81	sun_format_supported(WAVEFORMATEX * pwfx)
82	{
83	if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
84	return False;
85	if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
86	return False;
87	if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
88	return False;
89
90	return True;
91	}
92
93	BOOL
94	sun_set_format(WAVEFORMATEX * pwfx)
95	{
96	audio_info_t info;
97
98	ioctl(g_dsp_fd, AUDIO_DRAIN, 0);
99	AUDIO_INITINFO(&info);
100
101
102	if (pwfx->wBitsPerSample == 8)
103	{
104	info.play.encoding = AUDIO_ENCODING_LINEAR8;
105	}
106	else if (pwfx->wBitsPerSample == 16)
107	{
108	info.play.encoding = AUDIO_ENCODING_LINEAR;
109	}
110
111	g_samplewidth = pwfx->wBitsPerSample / 8;
112
113	if (pwfx->nChannels == 1)
114	{
115	info.play.channels = 1;
116	}
117	else if (pwfx->nChannels == 2)
118	{
119	info.play.channels = 2;
120	g_samplewidth *= 2;
121	}
122
123	info.play.sample_rate = pwfx->nSamplesPerSec;
124	info.play.precision = pwfx->wBitsPerSample;
125	info.play.samples = 0;
126	info.play.eof = 0;
127	info.play.error = 0;
128	g_reopened = True;
129
130	if (ioctl(g_dsp_fd, AUDIO_SETINFO, &info) == -1)
131	{
132	perror("AUDIO_SETINFO");
133	close(g_dsp_fd);
134	return False;
135	}
136
137	return True;
138	}
139
140	void
141	sun_volume(uint16 left, uint16 right)
142	{
143	audio_info_t info;
144	uint balance;
145	uint volume;
146
147	AUDIO_INITINFO(&info);
148
149	volume = (left > right) ? left : right;
150
151	if (volume / AUDIO_MID_BALANCE != 0)
152	{
153	balance =
154	AUDIO_MID_BALANCE - (left / (volume / AUDIO_MID_BALANCE)) +
155	(right / (volume / AUDIO_MID_BALANCE));
156	}
157	else
158	{
159	balance = AUDIO_MID_BALANCE;
160	}
161
162	info.play.gain = volume / (65536 / AUDIO_MAX_GAIN);
163	info.play.balance = balance;
164
165	if (ioctl(g_dsp_fd, AUDIO_SETINFO, &info) == -1)
166	{
167	perror("AUDIO_SETINFO");
168	return;
169	}
170	}
171
172	void
173	sun_play(void)
174	{
175	struct audio_packet *packet;
176	audio_info_t info;
177	ssize_t len;
178	unsigned int i;
179	STREAM out;
180	static BOOL sentcompletion = True;
181	static uint32 samplecnt = 0;
182	static uint32 numsamples;
183
184	while (1)
185	{
186	if (g_reopened)
187	{
188	/* Device was just (re)openend */
189	samplecnt = 0;
190	sentcompletion = True;
191	g_reopened = False;
192	}
193
194	if (rdpsnd_queue_empty())
195	{
196	g_dsp_busy = 0;
197	return;
198	}
199
200	packet = rdpsnd_queue_current_packet();
201	out = &packet->s;
202
203	if (sentcompletion)
204	{
205	sentcompletion = False;
206	numsamples = (out->end - out->p) / g_samplewidth;
207	}
208
209	len = 0;
210
211	if (out->end != out->p)
212	{
213	len = write(g_dsp_fd, out->p, out->end - out->p);
214	if (len == -1)
215	{
216	if (errno != EWOULDBLOCK)
217	perror("write audio");
218	g_dsp_busy = 1;
219	return;
220	}
221	}
222
223	out->p += len;
224	if (out->p == out->end)
225	{
226	if (ioctl(g_dsp_fd, AUDIO_GETINFO, &info) == -1)
227	{
228	perror("AUDIO_GETINFO");
229	return;
230	}
231
232	/* Ack the packet, if we have played at least 70% */
233	if (info.play.samples >= samplecnt + ((numsamples * 7) / 10))
234	{
235	samplecnt += numsamples;
236	/* We need to add 50 to tell windows that time has passed while
237	* playing this packet */
238	rdpsnd_send_completion(packet->tick + 50, packet->index);
239	rdpsnd_queue_next();
240	sentcompletion = True;
241	}
242	else
243	{
244	g_dsp_busy = 1;
245	return;
246	}
247	}
248	}
249	}
250
251	struct audio_driver *
252	sun_register(char *options)
253	{
254	static struct audio_driver sun_driver;
255
256	sun_driver.wave_out_write = rdpsnd_queue_write;
257	sun_driver.wave_out_open = sun_open;
258	sun_driver.wave_out_close = sun_close;
259	sun_driver.wave_out_format_supported = sun_format_supported;
260	sun_driver.wave_out_set_format = sun_set_format;
261	sun_driver.wave_out_volume = sun_volume;
262	sun_driver.wave_out_play = sun_play;
263	sun_driver.name = xstrdup("sun");
264	sun_driver.description =
265	xstrdup("SUN/BSD output driver, default device: " DEFAULTDEVICE " or $AUDIODEV");
266	sun_driver.need_byteswap_on_be = 1;
267	sun_driver.need_resampling = 0;
268	sun_driver.next = NULL;
269
270	if (options)
271	{
272	dsp_dev = xstrdup(options);
273	}
274	else
275	{
276	dsp_dev = getenv("AUDIODEV");
277
278	if (dsp_dev == NULL)
279	{
280	dsp_dev = xstrdup(DEFAULTDEVICE);
281	}
282	}
283
284	return &sun_driver;
285	}