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	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 BOOL g_swapaudio;
39			static short g_samplewidth;
40	matthewc	476
41			BOOL
42			wave_out_open(void)
43			{
44	matthewc	477	char *dsp_dev = getenv("AUDIODEV");
45	matthewc	476
46	astrand	499	if (dsp_dev == NULL)
47	matthewc	477	{
48	stargo	1254	dsp_dev = xstrdup(DEFAULTDEVICE);
49	matthewc	477	}
50
51	astrand	499	if ((g_dsp_fd = open(dsp_dev, O_WRONLY \| O_NONBLOCK)) == -1)
52	matthewc	476	{
53			perror(dsp_dev);
54			return False;
55			}
56
57			/* Non-blocking so that user interface is responsive */
58	astrand	499	fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) \| O_NONBLOCK);
59
60	stargo	1254	rdpsnd_queue_init();
61	stargo	510	g_reopened = True;
62	astrand	499
63	matthewc	476	return True;
64			}
65
66			void
67			wave_out_close(void)
68			{
69	matthewc	477	/* Ack all remaining packets */
70	stargo	1254	while (!rdpsnd_queue_empty())
71	matthewc	477	{
72	stargo	1254	rdpsnd_send_completion(rdpsnd_queue_current_packet()->tick,
73			rdpsnd_queue_current_packet()->index);
74			rdpsnd_queue_next();
75	matthewc	477	}
76
77	stargo	538	#if defined I_FLUSH && defined FLUSHW
78	matthewc	477	/* Flush the audiobuffer */
79	astrand	499	ioctl(g_dsp_fd, I_FLUSH, FLUSHW);
80	stargo	538	#endif
81	stargo	561	#if defined AUDIO_FLUSH
82			ioctl(g_dsp_fd, AUDIO_FLUSH, NULL);
83			#endif
84	matthewc	476	close(g_dsp_fd);
85			}
86
87			BOOL
88	astrand	499	wave_out_format_supported(WAVEFORMATEX * pwfx)
89	matthewc	476	{
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	astrand	499	wave_out_set_format(WAVEFORMATEX * pwfx)
102	matthewc	476	{
103			audio_info_t info;
104
105			ioctl(g_dsp_fd, AUDIO_DRAIN, 0);
106	stargo	510	g_swapaudio = False;
107	matthewc	476	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	matthewc	477	/* Do we need to swap the 16bit values? (Are we BigEndian) */
118	stargo	694	#ifdef B_ENDIAN
119			g_swapaudio = 1;
120			#else
121			g_swapaudio = 0;
122			#endif
123	matthewc	476	}
124
125	stargo	510	g_samplewidth = pwfx->wBitsPerSample / 8;
126	stargo	491
127	astrand	499	if (pwfx->nChannels == 1)
128			{
129	matthewc	514	info.play.channels = 1;
130	matthewc	476	}
131	astrand	499	else if (pwfx->nChannels == 2)
132	matthewc	476	{
133	matthewc	514	info.play.channels = 2;
134	stargo	510	g_samplewidth *= 2;
135	matthewc	476	}
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	stargo	510	g_reopened = True;
143	matthewc	476
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	stargo	491	wave_out_volume(uint16 left, uint16 right)
156			{
157			audio_info_t info;
158			uint balance;
159			uint volume;
160
161	stargo	772	AUDIO_INITINFO(&info);
162	stargo	491
163			volume = (left > right) ? left : right;
164
165	astrand	499	if (volume / AUDIO_MID_BALANCE != 0)
166	stargo	491	{
167	astrand	499	balance =
168			AUDIO_MID_BALANCE - (left / (volume / AUDIO_MID_BALANCE)) +
169			(right / (volume / AUDIO_MID_BALANCE));
170	stargo	491	}
171			else
172			{
173			balance = AUDIO_MID_BALANCE;
174			}
175
176	astrand	499	info.play.gain = volume / (65536 / AUDIO_MAX_GAIN);
177	stargo	491	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	matthewc	476	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	matthewc	477	static uint32 samplecnt = 0;
198			static uint32 numsamples;
199	matthewc	476
200			while (1)
201			{
202	stargo	510	if (g_reopened)
203	matthewc	477	{
204			/* Device was just (re)openend */
205			samplecnt = 0;
206			swapped = False;
207			sentcompletion = True;
208	stargo	510	g_reopened = False;
209	matthewc	477	}
210
211	stargo	1254	if (rdpsnd_queue_empty())
212	matthewc	476	{
213			g_dsp_busy = 0;
214			return;
215			}
216
217	stargo	1254	packet = rdpsnd_queue_current_packet();
218	matthewc	476	out = &packet->s;
219
220	matthewc	477	/* Swap the current packet, but only once */
221	stargo	510	if (g_swapaudio && !swapped)
222	matthewc	476	{
223	astrand	499	for (i = 0; i < out->end - out->p; i += 2)
224	matthewc	476	{
225			swap = *(out->p + i);
226	stargo	491	(out->p + i) = (out->p + i + 1);
227	matthewc	476	*(out->p + i + 1) = swap;
228			}
229	stargo	491	swapped = True;
230	matthewc	476	}
231
232	astrand	499	if (sentcompletion)
233	matthewc	476	{
234			sentcompletion = False;
235	stargo	510	numsamples = (out->end - out->p) / g_samplewidth;
236	matthewc	476	}
237
238	astrand	499	len = 0;
239	matthewc	476
240	astrand	499	if (out->end != out->p)
241	matthewc	476	{
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	matthewc	477
261			/* Ack the packet, if we have played at least 70% */
262	astrand	499	if (info.play.samples >= samplecnt + ((numsamples * 7) / 10))
263	matthewc	476	{
264	matthewc	477	samplecnt += numsamples;
265	stargo	1254	/* 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	matthewc	476	swapped = False;
270			sentcompletion = True;
271			}
272			else
273			{
274			g_dsp_busy = 1;
275			return;
276			}
277			}
278			}
279			}