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;

BOOL
wave_out_open(void)
{
        char *dsp_dev = getenv("AUDIODEV");

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

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