trunk/rdesktop/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

        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())
                rdpsnd_queue_next(0);
        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_queue_next(0);
                        }
                        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_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.need_resampling = 0;
        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			audioconfig = alNewConfig();
72	stargo	912	if (audioconfig == (ALconfig) 0)
73	astrand	746	{
74	stargo	1254	fprintf(stderr, "sgi_open: alNewConfig failed: %s\n", alGetErrorString(oserror()));
75	stargo	744	return False;
76			}
77
78			output_port = alOpenPort("rdpsnd", "w", 0);
79	astrand	746	if (output_port == (ALport) 0)
80			{
81	stargo	1254	fprintf(stderr, "sgi_open: alOpenPort failed: %s\n", alGetErrorString(oserror()));
82	stargo	744	return False;
83			}
84
85			#if (defined(IRIX_DEBUG))
86	stargo	1254	fprintf(stderr, "sgi_open: returning\n");
87	stargo	744	#endif
88			return True;
89			}
90
91			void
92	stargo	1255	sgi_close(void)
93	stargo	744	{
94			/* Ack all remaining packets */
95			#if (defined(IRIX_DEBUG))
96	stargo	1254	fprintf(stderr, "sgi_close: begin\n");
97	stargo	744	#endif
98	astrand	746
99	stargo	1254	while (!rdpsnd_queue_empty())
100	ossman_	1304	rdpsnd_queue_next(0);
101	astrand	746	alDiscardFrames(output_port, 0);
102
103	stargo	744	alClosePort(output_port);
104			alFreeConfig(audioconfig);
105			#if (defined(IRIX_DEBUG))
106	stargo	1254	fprintf(stderr, "sgi_close: returning\n");
107	stargo	744	#endif
108			}
109
110			BOOL
111	stargo	1255	sgi_format_supported(WAVEFORMATEX * pwfx)
112	stargo	744	{
113			if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
114			return False;
115			if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
116			return False;
117			if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
118			return False;
119
120			return True;
121			}
122
123			BOOL
124	stargo	1255	sgi_set_format(WAVEFORMATEX * pwfx)
125	stargo	744	{
126			int channels;
127	astrand	746	int frameSize, channelCount;
128			ALpv params;
129
130	stargo	744	#if (defined(IRIX_DEBUG))
131	stargo	1254	fprintf(stderr, "sgi_set_format: init...\n");
132	stargo	744	#endif
133
134			if (pwfx->wBitsPerSample == 8)
135			width = AL_SAMPLE_8;
136	astrand	746	else if (pwfx->wBitsPerSample == 16)
137	stargo	744	width = AL_SAMPLE_16;
138
139	stargo	912	/* Limited support to configure an opened audio port in IRIX. The
140	astrand	909	number of channels is a static setting and can not be changed after
141	stargo	912	a port is opened. So if the number of channels remains the same, we
142			can configure other settings; otherwise we have to reopen the audio
143	astrand	909	port, using same config. */
144	stargo	897
145	stargo	744	channels = pwfx->nChannels;
146			g_snd_rate = pwfx->nSamplesPerSec;
147
148			alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP);
149			alSetWidth(audioconfig, width);
150	astrand	909	if (channels != alGetChannels(audioconfig))
151	stargo	897	{
152			alClosePort(output_port);
153			alSetChannels(audioconfig, channels);
154			output_port = alOpenPort("rdpsnd", "w", audioconfig);
155	stargo	744
156	stargo	897	if (output_port == (ALport) 0)
157			{
158	stargo	1254	fprintf(stderr, "sgi_set_format: alOpenPort failed: %s\n",
159	astrand	909	alGetErrorString(oserror()));
160	stargo	897	return False;
161			}
162	stargo	744
163			}
164
165			resource = alGetResource(output_port);
166			maxFillable = alGetFillable(output_port);
167	astrand	746	channelCount = alGetChannels(audioconfig);
168			frameSize = alGetWidth(audioconfig);
169	stargo	744
170	astrand	746	if (frameSize == 0 \|\| channelCount == 0)
171			{
172	stargo	1254	fprintf(stderr, "sgi_set_format: bad frameSize or channelCount\n");
173	astrand	746	return False;
174			}
175			combinedFrameSize = frameSize * channelCount;
176	stargo	744
177	astrand	746	params.param = AL_RATE;
178			params.value.ll = (long long) g_snd_rate << 32;
179	stargo	744
180	astrand	746	if (alSetParams(resource, &params, 1) < 0)
181			{
182			fprintf(stderr, "wave_set_format: alSetParams failed: %s\n",
183			alGetErrorString(oserror()));
184			return False;
185			}
186			if (params.sizeOut < 0)
187			{
188			fprintf(stderr, "wave_set_format: invalid rate %d\n", g_snd_rate);
189			return False;
190			}
191	stargo	744
192			#if (defined(IRIX_DEBUG))
193	stargo	1254	fprintf(stderr, "sgi_set_format: returning...\n");
194	stargo	744	#endif
195			return True;
196			}
197
198			void
199	stargo	1255	sgi_volume(uint16 left, uint16 right)
200	stargo	744	{
201	astrand	746	double gainleft, gainright;
202			ALpv pv[1];
203			ALfixed gain[8];
204	stargo	744
205			#if (defined(IRIX_DEBUG))
206	stargo	1254	fprintf(stderr, "sgi_volume: begin\n");
207	astrand	746	fprintf(stderr, "left='%d', right='%d'\n", left, right);
208	stargo	744	#endif
209	astrand	746
210			gainleft = (double) left / IRIX_MAX_VOL;
211	stargo	744	gainright = (double) right / IRIX_MAX_VOL;
212
213	astrand	746	gain[0] = alDoubleToFixed(min_volume + gainleft * volume_range);
214			gain[1] = alDoubleToFixed(min_volume + gainright * volume_range);
215	stargo	744
216	astrand	746	pv[0].param = AL_GAIN;
217			pv[0].value.ptr = gain;
218			pv[0].sizeIn = 8;
219			if (alSetParams(AL_DEFAULT_OUTPUT, pv, 1) < 0)
220			{
221	stargo	1254	fprintf(stderr, "sgi_volume: alSetParams failed: %s\n",
222	astrand	746	alGetErrorString(oserror()));
223			return;
224			}
225	stargo	744
226			#if (defined(IRIX_DEBUG))
227	stargo	1254	fprintf(stderr, "sgi_volume: returning\n");
228	stargo	744	#endif
229			}
230
231			void
232	stargo	1255	sgi_play(void)
233	stargo	744	{
234			struct audio_packet *packet;
235			ssize_t len;
236			unsigned int i;
237			STREAM out;
238			int gf;
239
240			while (1)
241			{
242	stargo	1254	if (rdpsnd_queue_empty())
243	stargo	744	{
244			g_dsp_busy = False;
245			return;
246			}
247
248	stargo	1254	packet = rdpsnd_queue_current_packet();
249	stargo	744	out = &packet->s;
250
251			len = out->end - out->p;
252
253	astrand	746	alWriteFrames(output_port, out->p, len / combinedFrameSize);
254	stargo	744
255			out->p += len;
256			if (out->p == out->end)
257			{
258	stargo	897	gf = alGetFilled(output_port);
259	astrand	909	if (gf < (4 * maxFillable / 10))
260	stargo	744	{
261	ossman_	1302	rdpsnd_queue_next(0);
262	stargo	744	}
263			else
264			{
265			#if (defined(IRIX_DEBUG))
266	stargo	897	/* fprintf(stderr,"Busy playing...\n"); */
267	stargo	744	#endif
268			g_dsp_busy = True;
269	astrand	1032	usleep(10);
270	stargo	744	return;
271			}
272			}
273			}
274			}
275	stargo	1255
276			struct audio_driver *
277			sgi_register(char *options)
278			{
279	stargo	1256	static struct audio_driver sgi_driver;
280
281			sgi_driver.wave_out_open = sgi_open;
282			sgi_driver.wave_out_close = sgi_close;
283			sgi_driver.wave_out_format_supported = sgi_format_supported;
284			sgi_driver.wave_out_set_format = sgi_set_format;
285			sgi_driver.wave_out_volume = sgi_volume;
286			sgi_driver.wave_out_play = sgi_play;
287			sgi_driver.name = xstrdup("sgi");
288			sgi_driver.description = xstrdup("SGI output driver");
289	stargo	1260	sgi_driver.need_byteswap_on_be = 1;
290	stargo	1279	sgi_driver.need_resampling = 0;
291	stargo	1256	sgi_driver.next = NULL;
292
293	stargo	1255	if (options)
294			{
295			sgi_output_device = xstrdup(options);
296			}
297			return &sgi_driver;
298			}