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);

        g_reopened = True;

        return True;
}

void
sun_close(void)
{
        /* Ack all remaining packets */
        while (!rdpsnd_queue_empty())
                rdpsnd_queue_next(0);

#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_queue_next(50);
                                sentcompletion = True;
                        }
                        else
                        {
                                g_dsp_busy = 1;
                                return;
                        }
                }
        }
}

static struct audio_driver sun_driver = {
        .name = "sun",
        .description = "SUN/BSD output driver, default device: " DEFAULTDEVICE " or $AUDIODEV",

        .wave_out_open = sun_open,
        .wave_out_close = sun_close,
        .wave_out_format_supported = sun_format_supported,
        .wave_out_set_format = sun_set_format,
        .wave_out_volume = sun_volume,
        .wave_out_play = sun_play,

        .need_byteswap_on_be = 1,
        .need_resampling = 0,
};

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