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 BOOL g_swapaudio;
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);
        g_swapaudio = False;
        AUDIO_INITINFO(&info);


        if (pwfx->wBitsPerSample == 8)
        {
                info.play.encoding = AUDIO_ENCODING_LINEAR8;
        }
        else if (pwfx->wBitsPerSample == 16)
        {
                info.play.encoding = AUDIO_ENCODING_LINEAR;
                /* Do we need to swap the 16bit values? (Are we BigEndian) */
#ifdef B_ENDIAN
                g_swapaudio = 1;
#else
                g_swapaudio = 0;
#endif
        }

        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;
        uint8 swap;
        STREAM out;
        static BOOL swapped = False;
        static BOOL sentcompletion = True;
        static uint32 samplecnt = 0;
        static uint32 numsamples;

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

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

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

                /* Swap the current packet, but only once */
                if (g_swapaudio && !swapped)
                {
                        for (i = 0; i < out->end - out->p; i += 2)
                        {
                                swap = *(out->p + i);
                                *(out->p + i) = *(out->p + i + 1);
                                *(out->p + i + 1) = swap;
                        }
                        swapped = True;
                }

                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();
                                swapped = False;
                                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.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 BOOL g_swapaudio;
39	static short g_samplewidth;
40	static char *dsp_dev;
41
42	BOOL
43	sun_open(void)
44	{
45	if ((g_dsp_fd = open(dsp_dev, O_WRONLY \| O_NONBLOCK)) == -1)
46	{
47	perror(dsp_dev);
48	return False;
49	}
50
51	/* Non-blocking so that user interface is responsive */
52	fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) \| O_NONBLOCK);
53
54	rdpsnd_queue_init();
55	g_reopened = True;
56
57	return True;
58	}
59
60	void
61	sun_close(void)
62	{
63	/* Ack all remaining packets */
64	while (!rdpsnd_queue_empty())
65	{
66	rdpsnd_send_completion(rdpsnd_queue_current_packet()->tick,
67	rdpsnd_queue_current_packet()->index);
68	rdpsnd_queue_next();
69	}
70
71	#if defined I_FLUSH && defined FLUSHW
72	/* Flush the audiobuffer */
73	ioctl(g_dsp_fd, I_FLUSH, FLUSHW);
74	#endif
75	#if defined AUDIO_FLUSH
76	ioctl(g_dsp_fd, AUDIO_FLUSH, NULL);
77	#endif
78	close(g_dsp_fd);
79	}
80
81	BOOL
82	sun_format_supported(WAVEFORMATEX * pwfx)
83	{
84	if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
85	return False;
86	if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
87	return False;
88	if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
89	return False;
90
91	return True;
92	}
93
94	BOOL
95	sun_set_format(WAVEFORMATEX * pwfx)
96	{
97	audio_info_t info;
98
99	ioctl(g_dsp_fd, AUDIO_DRAIN, 0);
100	g_swapaudio = False;
101	AUDIO_INITINFO(&info);
102
103
104	if (pwfx->wBitsPerSample == 8)
105	{
106	info.play.encoding = AUDIO_ENCODING_LINEAR8;
107	}
108	else if (pwfx->wBitsPerSample == 16)
109	{
110	info.play.encoding = AUDIO_ENCODING_LINEAR;
111	/* Do we need to swap the 16bit values? (Are we BigEndian) */
112	#ifdef B_ENDIAN
113	g_swapaudio = 1;
114	#else
115	g_swapaudio = 0;
116	#endif
117	}
118
119	g_samplewidth = pwfx->wBitsPerSample / 8;
120
121	if (pwfx->nChannels == 1)
122	{
123	info.play.channels = 1;
124	}
125	else if (pwfx->nChannels == 2)
126	{
127	info.play.channels = 2;
128	g_samplewidth *= 2;
129	}
130
131	info.play.sample_rate = pwfx->nSamplesPerSec;
132	info.play.precision = pwfx->wBitsPerSample;
133	info.play.samples = 0;
134	info.play.eof = 0;
135	info.play.error = 0;
136	g_reopened = True;
137
138	if (ioctl(g_dsp_fd, AUDIO_SETINFO, &info) == -1)
139	{
140	perror("AUDIO_SETINFO");
141	close(g_dsp_fd);
142	return False;
143	}
144
145	return True;
146	}
147
148	void
149	sun_volume(uint16 left, uint16 right)
150	{
151	audio_info_t info;
152	uint balance;
153	uint volume;
154
155	AUDIO_INITINFO(&info);
156
157	volume = (left > right) ? left : right;
158
159	if (volume / AUDIO_MID_BALANCE != 0)
160	{
161	balance =
162	AUDIO_MID_BALANCE - (left / (volume / AUDIO_MID_BALANCE)) +
163	(right / (volume / AUDIO_MID_BALANCE));
164	}
165	else
166	{
167	balance = AUDIO_MID_BALANCE;
168	}
169
170	info.play.gain = volume / (65536 / AUDIO_MAX_GAIN);
171	info.play.balance = balance;
172
173	if (ioctl(g_dsp_fd, AUDIO_SETINFO, &info) == -1)
174	{
175	perror("AUDIO_SETINFO");
176	return;
177	}
178	}
179
180	void
181	sun_play(void)
182	{
183	struct audio_packet *packet;
184	audio_info_t info;
185	ssize_t len;
186	unsigned int i;
187	uint8 swap;
188	STREAM out;
189	static BOOL swapped = False;
190	static BOOL sentcompletion = True;
191	static uint32 samplecnt = 0;
192	static uint32 numsamples;
193
194	while (1)
195	{
196	if (g_reopened)
197	{
198	/* Device was just (re)openend */
199	samplecnt = 0;
200	swapped = False;
201	sentcompletion = True;
202	g_reopened = False;
203	}
204
205	if (rdpsnd_queue_empty())
206	{
207	g_dsp_busy = 0;
208	return;
209	}
210
211	packet = rdpsnd_queue_current_packet();
212	out = &packet->s;
213
214	/* Swap the current packet, but only once */
215	if (g_swapaudio && !swapped)
216	{
217	for (i = 0; i < out->end - out->p; i += 2)
218	{
219	swap = *(out->p + i);
220	(out->p + i) = (out->p + i + 1);
221	*(out->p + i + 1) = swap;
222	}
223	swapped = True;
224	}
225
226	if (sentcompletion)
227	{
228	sentcompletion = False;
229	numsamples = (out->end - out->p) / g_samplewidth;
230	}
231
232	len = 0;
233
234	if (out->end != out->p)
235	{
236	len = write(g_dsp_fd, out->p, out->end - out->p);
237	if (len == -1)
238	{
239	if (errno != EWOULDBLOCK)
240	perror("write audio");
241	g_dsp_busy = 1;
242	return;
243	}
244	}
245
246	out->p += len;
247	if (out->p == out->end)
248	{
249	if (ioctl(g_dsp_fd, AUDIO_GETINFO, &info) == -1)
250	{
251	perror("AUDIO_GETINFO");
252	return;
253	}
254
255	/* Ack the packet, if we have played at least 70% */
256	if (info.play.samples >= samplecnt + ((numsamples * 7) / 10))
257	{
258	samplecnt += numsamples;
259	/* We need to add 50 to tell windows that time has passed while
260	* playing this packet */
261	rdpsnd_send_completion(packet->tick + 50, packet->index);
262	rdpsnd_queue_next();
263	swapped = False;
264	sentcompletion = True;
265	}
266	else
267	{
268	g_dsp_busy = 1;
269	return;
270	}
271	}
272	}
273	}
274
275	struct audio_driver *
276	sun_register(char *options)
277	{
278	static struct audio_driver sun_driver;
279
280	sun_driver.wave_out_write = rdpsnd_queue_write;
281	sun_driver.wave_out_open = sun_open;
282	sun_driver.wave_out_close = sun_close;
283	sun_driver.wave_out_format_supported = sun_format_supported;
284	sun_driver.wave_out_set_format = sun_set_format;
285	sun_driver.wave_out_volume = sun_volume;
286	sun_driver.wave_out_play = sun_play;
287	sun_driver.name = xstrdup("sun");
288	sun_driver.description =
289	xstrdup("SUN/BSD output driver, default device: " DEFAULTDEVICE " or $AUDIODEV");
290	sun_driver.next = NULL;
291
292	if (options)
293	{
294	dsp_dev = xstrdup(options);
295	}
296	else
297	{
298	dsp_dev = getenv("AUDIODEV");
299
300	if (dsp_dev == NULL)
301	{
302	dsp_dev = xstrdup(DEFAULTDEVICE);
303	}
304	}
305
306	return &sun_driver;
307	}