rdesktop/trunk/rdpsnd_sgi.c

/* -*- c-basic-offset: 8 -*-
   rdesktop: A Remote Desktop Protocol client.
   Sound Channel Process Functions - SGI/IRIX
   Copyright (C) Matthew Chapman 2003
   Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003
   Copyright (C) Jeremy Meng void.foo@gmail.com 2004, 2005

   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 <errno.h>
#include <dmedia/audio.h>

/* #define IRIX_DEBUG 1 */

#define IRIX_MAX_VOL     65535

ALconfig audioconfig;
ALport output_port;

static int g_snd_rate;
static int width = AL_SAMPLE_16;
static char *sgi_output_device = NULL;

double min_volume, max_volume, volume_range;
int resource, maxFillable;
int combinedFrameSize;

BOOL
sgi_open(void)
{
        ALparamInfo pinfo;
        static int warned = 0;

#if (defined(IRIX_DEBUG))
        fprintf(stderr, "sgi_open: begin\n");
#endif

        if (!warned && sgi_output_device)
        {
                warning("device-options not supported for libao-driver\n");
                warned = 1;
        }

        if (alGetParamInfo(AL_DEFAULT_OUTPUT, AL_GAIN, &pinfo) < 0)
        {
                fprintf(stderr, "sgi_open: alGetParamInfo failed: %s\n",
                        alGetErrorString(oserror()));
        }
        min_volume = alFixedToDouble(pinfo.min.ll);
        max_volume = alFixedToDouble(pinfo.max.ll);
        volume_range = (max_volume - min_volume);
#if (defined(IRIX_DEBUG))
        fprintf(stderr, "sgi_open: minvol = %lf, maxvol= %lf, range = %lf.\n",
                min_volume, max_volume, volume_range);
#endif

        rdpsnd_queue_init();

        audioconfig = alNewConfig();
        if (audioconfig == (ALconfig) 0)
        {
                fprintf(stderr, "sgi_open: alNewConfig failed: %s\n", alGetErrorString(oserror()));
                return False;
        }

        output_port = alOpenPort("rdpsnd", "w", 0);
        if (output_port == (ALport) 0)
        {
                fprintf(stderr, "sgi_open: alOpenPort failed: %s\n", alGetErrorString(oserror()));
                return False;
        }

#if (defined(IRIX_DEBUG))
        fprintf(stderr, "sgi_open: returning\n");
#endif
        return True;
}

void
sgi_close(void)
{
        /* Ack all remaining packets */
#if (defined(IRIX_DEBUG))
        fprintf(stderr, "sgi_close: begin\n");
#endif

        while (!rdpsnd_queue_empty())
        {
                /* We need to add 50 to tell windows that time has passed while
                 * playing this packet */
                rdpsnd_send_completion(rdpsnd_queue_current_packet()->tick + 50,
                                       rdpsnd_queue_current_packet()->index);
                rdpsnd_queue_next();
        }
        alDiscardFrames(output_port, 0);

        alClosePort(output_port);
        alFreeConfig(audioconfig);
#if (defined(IRIX_DEBUG))
        fprintf(stderr, "sgi_close: returning\n");
#endif
}

BOOL
sgi_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
sgi_set_format(WAVEFORMATEX * pwfx)
{
        int channels;
        int frameSize, channelCount;
        ALpv params;

#if (defined(IRIX_DEBUG))
        fprintf(stderr, "sgi_set_format: init...\n");
#endif

        if (pwfx->wBitsPerSample == 8)
                width = AL_SAMPLE_8;
        else if (pwfx->wBitsPerSample == 16)
                width = AL_SAMPLE_16;

        /* Limited support to configure an opened audio port in IRIX.  The
           number of channels is a static setting and can not be changed after
           a port is opened.  So if the number of channels remains the same, we
           can configure other settings; otherwise we have to reopen the audio
           port, using same config. */

        channels = pwfx->nChannels;
        g_snd_rate = pwfx->nSamplesPerSec;

        alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP);
        alSetWidth(audioconfig, width);
        if (channels != alGetChannels(audioconfig))
        {
                alClosePort(output_port);
                alSetChannels(audioconfig, channels);
                output_port = alOpenPort("rdpsnd", "w", audioconfig);

                if (output_port == (ALport) 0)
                {
                        fprintf(stderr, "sgi_set_format: alOpenPort failed: %s\n",
                                alGetErrorString(oserror()));
                        return False;
                }

        }

        resource = alGetResource(output_port);
        maxFillable = alGetFillable(output_port);
        channelCount = alGetChannels(audioconfig);
        frameSize = alGetWidth(audioconfig);

        if (frameSize == 0 || channelCount == 0)
        {
                fprintf(stderr, "sgi_set_format: bad frameSize or channelCount\n");
                return False;
        }
        combinedFrameSize = frameSize * channelCount;

        params.param = AL_RATE;
        params.value.ll = (long long) g_snd_rate << 32;

        if (alSetParams(resource, &params, 1) < 0)
        {
                fprintf(stderr, "wave_set_format: alSetParams failed: %s\n",
                        alGetErrorString(oserror()));
                return False;
        }
        if (params.sizeOut < 0)
        {
                fprintf(stderr, "wave_set_format: invalid rate %d\n", g_snd_rate);
                return False;
        }

#if (defined(IRIX_DEBUG))
        fprintf(stderr, "sgi_set_format: returning...\n");
#endif
        return True;
}

void
sgi_volume(uint16 left, uint16 right)
{
        double gainleft, gainright;
        ALpv pv[1];
        ALfixed gain[8];

#if (defined(IRIX_DEBUG))
        fprintf(stderr, "sgi_volume: begin\n");
        fprintf(stderr, "left='%d', right='%d'\n", left, right);
#endif

        gainleft = (double) left / IRIX_MAX_VOL;
        gainright = (double) right / IRIX_MAX_VOL;

        gain[0] = alDoubleToFixed(min_volume + gainleft * volume_range);
        gain[1] = alDoubleToFixed(min_volume + gainright * volume_range);

        pv[0].param = AL_GAIN;
        pv[0].value.ptr = gain;
        pv[0].sizeIn = 8;
        if (alSetParams(AL_DEFAULT_OUTPUT, pv, 1) < 0)
        {
                fprintf(stderr, "sgi_volume: alSetParams failed: %s\n",
                        alGetErrorString(oserror()));
                return;
        }

#if (defined(IRIX_DEBUG))
        fprintf(stderr, "sgi_volume: returning\n");
#endif
}

void
sgi_play(void)
{
        struct audio_packet *packet;
        ssize_t len;
        unsigned int i;
        STREAM out;
        int gf;

        while (1)
        {
                if (rdpsnd_queue_empty())
                {
                        g_dsp_busy = False;
                        return;
                }

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

                len = out->end - out->p;

                alWriteFrames(output_port, out->p, len / combinedFrameSize);

                out->p += len;
                if (out->p == out->end)
                {
                        gf = alGetFilled(output_port);
                        if (gf < (4 * maxFillable / 10))
                        {
                                rdpsnd_send_completion(packet->tick, packet->index);
                                rdpsnd_queue_next();
                        }
                        else
                        {
#if (defined(IRIX_DEBUG))
/*                              fprintf(stderr,"Busy playing...\n"); */
#endif
                                g_dsp_busy = True;
                                usleep(10);
                                return;
                        }
                }
        }
}

struct audio_driver *
sgi_register(char *options)
{
        static struct audio_driver sgi_driver;

        sgi_driver.wave_out_write = rdpsnd_queue_write;
        sgi_driver.wave_out_open = sgi_open;
        sgi_driver.wave_out_close = sgi_close;
        sgi_driver.wave_out_format_supported = sgi_format_supported;
        sgi_driver.wave_out_set_format = sgi_set_format;
        sgi_driver.wave_out_volume = sgi_volume;
        sgi_driver.wave_out_play = sgi_play;
        sgi_driver.name = xstrdup("sgi");
        sgi_driver.description = xstrdup("SGI output driver");
        sgi_driver.need_byteswap_on_be = 1;
        sgi_driver.next = NULL;

        if (options)
        {
                sgi_output_device = xstrdup(options);
        }
        return &sgi_driver;
}
1	astrand	963	/* -- c-basic-offset: 8 --
2	stargo	744	rdesktop: A Remote Desktop Protocol client.
3			Sound Channel Process Functions - SGI/IRIX
4			Copyright (C) Matthew Chapman 2003
5			Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003
6	astrand	1032	Copyright (C) Jeremy Meng void.foo@gmail.com 2004, 2005
7	stargo	744
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 <errno.h>
25			#include <dmedia/audio.h>
26
27	astrand	1032	/* #define IRIX_DEBUG 1 */
28	stargo	744
29			#define IRIX_MAX_VOL 65535
30
31			ALconfig audioconfig;
32			ALport output_port;
33
34			static int g_snd_rate;
35			static int width = AL_SAMPLE_16;
36	stargo	1255	static char *sgi_output_device = NULL;
37	stargo	744
38			double min_volume, max_volume, volume_range;
39			int resource, maxFillable;
40			int combinedFrameSize;
41
42			BOOL
43	stargo	1255	sgi_open(void)
44	stargo	744	{
45	astrand	746	ALparamInfo pinfo;
46	stargo	1255	static int warned = 0;
47	stargo	744
48			#if (defined(IRIX_DEBUG))
49	stargo	1254	fprintf(stderr, "sgi_open: begin\n");
50	stargo	744	#endif
51
52	stargo	1255	if (!warned && sgi_output_device)
53			{
54			warning("device-options not supported for libao-driver\n");
55			warned = 1;
56			}
57
58	astrand	746	if (alGetParamInfo(AL_DEFAULT_OUTPUT, AL_GAIN, &pinfo) < 0)
59			{
60	stargo	1254	fprintf(stderr, "sgi_open: alGetParamInfo failed: %s\n",
61	astrand	746	alGetErrorString(oserror()));
62			}
63			min_volume = alFixedToDouble(pinfo.min.ll);
64			max_volume = alFixedToDouble(pinfo.max.ll);
65			volume_range = (max_volume - min_volume);
66	stargo	744	#if (defined(IRIX_DEBUG))
67	stargo	1254	fprintf(stderr, "sgi_open: minvol = %lf, maxvol= %lf, range = %lf.\n",
68	astrand	746	min_volume, max_volume, volume_range);
69	stargo	744	#endif
70
71	stargo	1254	rdpsnd_queue_init();
72	stargo	744
73			audioconfig = alNewConfig();
74	stargo	912	if (audioconfig == (ALconfig) 0)
75	astrand	746	{
76	stargo	1254	fprintf(stderr, "sgi_open: alNewConfig failed: %s\n", alGetErrorString(oserror()));
77	stargo	744	return False;
78			}
79
80			output_port = alOpenPort("rdpsnd", "w", 0);
81	astrand	746	if (output_port == (ALport) 0)
82			{
83	stargo	1254	fprintf(stderr, "sgi_open: alOpenPort failed: %s\n", alGetErrorString(oserror()));
84	stargo	744	return False;
85			}
86
87			#if (defined(IRIX_DEBUG))
88	stargo	1254	fprintf(stderr, "sgi_open: returning\n");
89	stargo	744	#endif
90			return True;
91			}
92
93			void
94	stargo	1255	sgi_close(void)
95	stargo	744	{
96			/* Ack all remaining packets */
97			#if (defined(IRIX_DEBUG))
98	stargo	1254	fprintf(stderr, "sgi_close: begin\n");
99	stargo	744	#endif
100	astrand	746
101	stargo	1254	while (!rdpsnd_queue_empty())
102	stargo	744	{
103	stargo	1254	/* We need to add 50 to tell windows that time has passed while
104			* playing this packet */
105			rdpsnd_send_completion(rdpsnd_queue_current_packet()->tick + 50,
106			rdpsnd_queue_current_packet()->index);
107			rdpsnd_queue_next();
108	stargo	744	}
109	astrand	746	alDiscardFrames(output_port, 0);
110
111	stargo	744	alClosePort(output_port);
112			alFreeConfig(audioconfig);
113			#if (defined(IRIX_DEBUG))
114	stargo	1254	fprintf(stderr, "sgi_close: returning\n");
115	stargo	744	#endif
116			}
117
118			BOOL
119	stargo	1255	sgi_format_supported(WAVEFORMATEX * pwfx)
120	stargo	744	{
121			if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
122			return False;
123			if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
124			return False;
125			if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
126			return False;
127
128			return True;
129			}
130
131			BOOL
132	stargo	1255	sgi_set_format(WAVEFORMATEX * pwfx)
133	stargo	744	{
134			int channels;
135	astrand	746	int frameSize, channelCount;
136			ALpv params;
137
138	stargo	744	#if (defined(IRIX_DEBUG))
139	stargo	1254	fprintf(stderr, "sgi_set_format: init...\n");
140	stargo	744	#endif
141
142			if (pwfx->wBitsPerSample == 8)
143			width = AL_SAMPLE_8;
144	astrand	746	else if (pwfx->wBitsPerSample == 16)
145	stargo	744	width = AL_SAMPLE_16;
146
147	stargo	912	/* Limited support to configure an opened audio port in IRIX. The
148	astrand	909	number of channels is a static setting and can not be changed after
149	stargo	912	a port is opened. So if the number of channels remains the same, we
150			can configure other settings; otherwise we have to reopen the audio
151	astrand	909	port, using same config. */
152	stargo	897
153	stargo	744	channels = pwfx->nChannels;
154			g_snd_rate = pwfx->nSamplesPerSec;
155
156			alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP);
157			alSetWidth(audioconfig, width);
158	astrand	909	if (channels != alGetChannels(audioconfig))
159	stargo	897	{
160			alClosePort(output_port);
161			alSetChannels(audioconfig, channels);
162			output_port = alOpenPort("rdpsnd", "w", audioconfig);
163	stargo	744
164	stargo	897	if (output_port == (ALport) 0)
165			{
166	stargo	1254	fprintf(stderr, "sgi_set_format: alOpenPort failed: %s\n",
167	astrand	909	alGetErrorString(oserror()));
168	stargo	897	return False;
169			}
170	stargo	744
171			}
172
173			resource = alGetResource(output_port);
174			maxFillable = alGetFillable(output_port);
175	astrand	746	channelCount = alGetChannels(audioconfig);
176			frameSize = alGetWidth(audioconfig);
177	stargo	744
178	astrand	746	if (frameSize == 0 \|\| channelCount == 0)
179			{
180	stargo	1254	fprintf(stderr, "sgi_set_format: bad frameSize or channelCount\n");
181	astrand	746	return False;
182			}
183			combinedFrameSize = frameSize * channelCount;
184	stargo	744
185	astrand	746	params.param = AL_RATE;
186			params.value.ll = (long long) g_snd_rate << 32;
187	stargo	744
188	astrand	746	if (alSetParams(resource, &params, 1) < 0)
189			{
190			fprintf(stderr, "wave_set_format: alSetParams failed: %s\n",
191			alGetErrorString(oserror()));
192			return False;
193			}
194			if (params.sizeOut < 0)
195			{
196			fprintf(stderr, "wave_set_format: invalid rate %d\n", g_snd_rate);
197			return False;
198			}
199	stargo	744
200			#if (defined(IRIX_DEBUG))
201	stargo	1254	fprintf(stderr, "sgi_set_format: returning...\n");
202	stargo	744	#endif
203			return True;
204			}
205
206			void
207	stargo	1255	sgi_volume(uint16 left, uint16 right)
208	stargo	744	{
209	astrand	746	double gainleft, gainright;
210			ALpv pv[1];
211			ALfixed gain[8];
212	stargo	744
213			#if (defined(IRIX_DEBUG))
214	stargo	1254	fprintf(stderr, "sgi_volume: begin\n");
215	astrand	746	fprintf(stderr, "left='%d', right='%d'\n", left, right);
216	stargo	744	#endif
217	astrand	746
218			gainleft = (double) left / IRIX_MAX_VOL;
219	stargo	744	gainright = (double) right / IRIX_MAX_VOL;
220
221	astrand	746	gain[0] = alDoubleToFixed(min_volume + gainleft * volume_range);
222			gain[1] = alDoubleToFixed(min_volume + gainright * volume_range);
223	stargo	744
224	astrand	746	pv[0].param = AL_GAIN;
225			pv[0].value.ptr = gain;
226			pv[0].sizeIn = 8;
227			if (alSetParams(AL_DEFAULT_OUTPUT, pv, 1) < 0)
228			{
229	stargo	1254	fprintf(stderr, "sgi_volume: alSetParams failed: %s\n",
230	astrand	746	alGetErrorString(oserror()));
231			return;
232			}
233	stargo	744
234			#if (defined(IRIX_DEBUG))
235	stargo	1254	fprintf(stderr, "sgi_volume: returning\n");
236	stargo	744	#endif
237			}
238
239			void
240	stargo	1255	sgi_play(void)
241	stargo	744	{
242			struct audio_packet *packet;
243			ssize_t len;
244			unsigned int i;
245			STREAM out;
246			int gf;
247
248			while (1)
249			{
250	stargo	1254	if (rdpsnd_queue_empty())
251	stargo	744	{
252			g_dsp_busy = False;
253			return;
254			}
255
256	stargo	1254	packet = rdpsnd_queue_current_packet();
257	stargo	744	out = &packet->s;
258
259			len = out->end - out->p;
260
261	astrand	746	alWriteFrames(output_port, out->p, len / combinedFrameSize);
262	stargo	744
263			out->p += len;
264			if (out->p == out->end)
265			{
266	stargo	897	gf = alGetFilled(output_port);
267	astrand	909	if (gf < (4 * maxFillable / 10))
268	stargo	744	{
269			rdpsnd_send_completion(packet->tick, packet->index);
270	stargo	1254	rdpsnd_queue_next();
271	stargo	744	}
272			else
273			{
274			#if (defined(IRIX_DEBUG))
275	stargo	897	/* fprintf(stderr,"Busy playing...\n"); */
276	stargo	744	#endif
277			g_dsp_busy = True;
278	astrand	1032	usleep(10);
279	stargo	744	return;
280			}
281			}
282			}
283			}
284	stargo	1255
285			struct audio_driver *
286			sgi_register(char *options)
287			{
288	stargo	1256	static struct audio_driver sgi_driver;
289
290			sgi_driver.wave_out_write = rdpsnd_queue_write;
291			sgi_driver.wave_out_open = sgi_open;
292			sgi_driver.wave_out_close = sgi_close;
293			sgi_driver.wave_out_format_supported = sgi_format_supported;
294			sgi_driver.wave_out_set_format = sgi_set_format;
295			sgi_driver.wave_out_volume = sgi_volume;
296			sgi_driver.wave_out_play = sgi_play;
297			sgi_driver.name = xstrdup("sgi");
298			sgi_driver.description = xstrdup("SGI output driver");
299	stargo	1260	sgi_driver.need_byteswap_on_be = 1;
300	stargo	1256	sgi_driver.next = NULL;
301
302	stargo	1255	if (options)
303			{
304			sgi_output_device = xstrdup(options);
305			}
306			return &sgi_driver;
307			}