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;
                        }
                }
        }
}

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

        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	astrand	963	/* -- c-basic-offset: 8 --
2	matthewc	476	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	stargo	1254	Copyright (C) Michael Gernoth mike@zerfleddert.de 2003-2006
7	matthewc	476
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	stargo	1254	#include "rdpsnd.h"
25	matthewc	476	#include <unistd.h>
26			#include <fcntl.h>
27			#include <errno.h>
28			#include <sys/ioctl.h>
29	matthewc	477	#include <sys/audioio.h>
30	matthewc	476
31	stargo	560	#if (defined(sun) && (defined(__svr4__) \|\| defined(__SVR4)))
32			#include <stropts.h>
33			#endif
34
35	stargo	1254	#define DEFAULTDEVICE "/dev/audio"
36	matthewc	476
37	stargo	510	static BOOL g_reopened;
38			static short g_samplewidth;
39	stargo	1255	static char *dsp_dev;
40	matthewc	476
41			BOOL
42	stargo	1255	sun_open(void)
43	matthewc	476	{
44	astrand	499	if ((g_dsp_fd = open(dsp_dev, O_WRONLY \| O_NONBLOCK)) == -1)
45	matthewc	476	{
46			perror(dsp_dev);
47			return False;
48			}
49
50			/* Non-blocking so that user interface is responsive */
51	astrand	499	fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) \| O_NONBLOCK);
52
53	stargo	510	g_reopened = True;
54	astrand	499
55	matthewc	476	return True;
56			}
57
58			void
59	stargo	1255	sun_close(void)
60	matthewc	476	{
61	matthewc	477	/* Ack all remaining packets */
62	stargo	1254	while (!rdpsnd_queue_empty())
63	ossman_	1304	rdpsnd_queue_next(0);
64	matthewc	477
65	stargo	538	#if defined I_FLUSH && defined FLUSHW
66	matthewc	477	/* Flush the audiobuffer */
67	astrand	499	ioctl(g_dsp_fd, I_FLUSH, FLUSHW);
68	stargo	538	#endif
69	stargo	561	#if defined AUDIO_FLUSH
70			ioctl(g_dsp_fd, AUDIO_FLUSH, NULL);
71			#endif
72	matthewc	476	close(g_dsp_fd);
73			}
74
75			BOOL
76	stargo	1255	sun_format_supported(WAVEFORMATEX * pwfx)
77	matthewc	476	{
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	stargo	1255	sun_set_format(WAVEFORMATEX * pwfx)
90	matthewc	476	{
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	stargo	510	g_samplewidth = pwfx->wBitsPerSample / 8;
107	stargo	491
108	astrand	499	if (pwfx->nChannels == 1)
109			{
110	matthewc	514	info.play.channels = 1;
111	matthewc	476	}
112	astrand	499	else if (pwfx->nChannels == 2)
113	matthewc	476	{
114	matthewc	514	info.play.channels = 2;
115	stargo	510	g_samplewidth *= 2;
116	matthewc	476	}
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	stargo	510	g_reopened = True;
124	matthewc	476
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	stargo	1255	sun_volume(uint16 left, uint16 right)
137	stargo	491	{
138			audio_info_t info;
139			uint balance;
140			uint volume;
141
142	stargo	772	AUDIO_INITINFO(&info);
143	stargo	491
144			volume = (left > right) ? left : right;
145
146	astrand	499	if (volume / AUDIO_MID_BALANCE != 0)
147	stargo	491	{
148	astrand	499	balance =
149			AUDIO_MID_BALANCE - (left / (volume / AUDIO_MID_BALANCE)) +
150			(right / (volume / AUDIO_MID_BALANCE));
151	stargo	491	}
152			else
153			{
154			balance = AUDIO_MID_BALANCE;
155			}
156
157	astrand	499	info.play.gain = volume / (65536 / AUDIO_MAX_GAIN);
158	stargo	491	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	stargo	1255	sun_play(void)
169	matthewc	476	{
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	matthewc	477	static uint32 samplecnt = 0;
177			static uint32 numsamples;
178	matthewc	476
179			while (1)
180			{
181	stargo	510	if (g_reopened)
182	matthewc	477	{
183			/* Device was just (re)openend */
184			samplecnt = 0;
185			sentcompletion = True;
186	stargo	510	g_reopened = False;
187	matthewc	477	}
188
189	stargo	1254	if (rdpsnd_queue_empty())
190	matthewc	476	{
191			g_dsp_busy = 0;
192			return;
193			}
194
195	stargo	1254	packet = rdpsnd_queue_current_packet();
196	matthewc	476	out = &packet->s;
197
198	astrand	499	if (sentcompletion)
199	matthewc	476	{
200			sentcompletion = False;
201	stargo	510	numsamples = (out->end - out->p) / g_samplewidth;
202	matthewc	476	}
203
204	astrand	499	len = 0;
205	matthewc	476
206	astrand	499	if (out->end != out->p)
207	matthewc	476	{
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	matthewc	477
227			/* Ack the packet, if we have played at least 70% */
228	astrand	499	if (info.play.samples >= samplecnt + ((numsamples * 7) / 10))
229	matthewc	476	{
230	matthewc	477	samplecnt += numsamples;
231	stargo	1254	/* We need to add 50 to tell windows that time has passed while
232			* playing this packet */
233	ossman_	1302	rdpsnd_queue_next(50);
234	matthewc	476	sentcompletion = True;
235			}
236			else
237			{
238			g_dsp_busy = 1;
239			return;
240			}
241			}
242			}
243			}
244	stargo	1255
245			struct audio_driver *
246			sun_register(char *options)
247			{
248	stargo	1256	static struct audio_driver sun_driver;
249
250			sun_driver.wave_out_open = sun_open;
251			sun_driver.wave_out_close = sun_close;
252			sun_driver.wave_out_format_supported = sun_format_supported;
253			sun_driver.wave_out_set_format = sun_set_format;
254			sun_driver.wave_out_volume = sun_volume;
255			sun_driver.wave_out_play = sun_play;
256			sun_driver.name = xstrdup("sun");
257			sun_driver.description =
258			xstrdup("SUN/BSD output driver, default device: " DEFAULTDEVICE " or $AUDIODEV");
259	stargo	1260	sun_driver.need_byteswap_on_be = 1;
260	stargo	1279	sun_driver.need_resampling = 0;
261	stargo	1256	sun_driver.next = NULL;
262
263	stargo	1255	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			}