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;

void sgi_play(void);

void
sgi_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv)
{
}

void
sgi_check_fds(fd_set * rfds, fd_set * wfds)
{
        if (output_port == (ALport) 0)
                return;

        if (!rdpsnd_queue_empty())
                sgi_play();
}

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);
        output_port = (ALport) 0;
        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())
                        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
                                usleep(10);
                                return;
                        }
                }
        }
}

static struct audio_driver sgi_driver = {
        .name = "sgi",
        .description = "SGI output driver",

        .add_fds = sgi_add_fds,
        .check_fds = sgi_check_fds,

        .wave_out_open = sgi_open,
        .wave_out_close = sgi_close,
        .wave_out_format_supported = sgi_format_supported,
        .wave_out_set_format = sgi_set_format,
        .wave_out_volume = sgi_volume,

        .need_byteswap_on_be = 1,
        .need_resampling = 0,
};

struct audio_driver *
sgi_register(char *options)
{
        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	ossman_	1346	void sgi_play(void);
43
44			void
45			sgi_add_fds(int n, fd_set rfds, fd_set * wfds, struct timeval *tv)
46			{
47			}
48
49			void
50			sgi_check_fds(fd_set * rfds, fd_set * wfds)
51			{
52			if (output_port == (ALport) 0)
53			return;
54
55			if (!rdpsnd_queue_empty())
56			sgi_play();
57			}
58
59	stargo	744	BOOL
60	stargo	1255	sgi_open(void)
61	stargo	744	{
62	astrand	746	ALparamInfo pinfo;
63	stargo	1255	static int warned = 0;
64	stargo	744
65			#if (defined(IRIX_DEBUG))
66	stargo	1254	fprintf(stderr, "sgi_open: begin\n");
67	stargo	744	#endif
68
69	stargo	1255	if (!warned && sgi_output_device)
70			{
71			warning("device-options not supported for libao-driver\n");
72			warned = 1;
73			}
74
75	astrand	746	if (alGetParamInfo(AL_DEFAULT_OUTPUT, AL_GAIN, &pinfo) < 0)
76			{
77	stargo	1254	fprintf(stderr, "sgi_open: alGetParamInfo failed: %s\n",
78	astrand	746	alGetErrorString(oserror()));
79			}
80			min_volume = alFixedToDouble(pinfo.min.ll);
81			max_volume = alFixedToDouble(pinfo.max.ll);
82			volume_range = (max_volume - min_volume);
83	stargo	744	#if (defined(IRIX_DEBUG))
84	stargo	1254	fprintf(stderr, "sgi_open: minvol = %lf, maxvol= %lf, range = %lf.\n",
85	astrand	746	min_volume, max_volume, volume_range);
86	stargo	744	#endif
87
88			audioconfig = alNewConfig();
89	stargo	912	if (audioconfig == (ALconfig) 0)
90	astrand	746	{
91	stargo	1254	fprintf(stderr, "sgi_open: alNewConfig failed: %s\n", alGetErrorString(oserror()));
92	stargo	744	return False;
93			}
94
95			output_port = alOpenPort("rdpsnd", "w", 0);
96	astrand	746	if (output_port == (ALport) 0)
97			{
98	stargo	1254	fprintf(stderr, "sgi_open: alOpenPort failed: %s\n", alGetErrorString(oserror()));
99	stargo	744	return False;
100			}
101
102			#if (defined(IRIX_DEBUG))
103	stargo	1254	fprintf(stderr, "sgi_open: returning\n");
104	stargo	744	#endif
105			return True;
106			}
107
108			void
109	stargo	1255	sgi_close(void)
110	stargo	744	{
111			/* Ack all remaining packets */
112			#if (defined(IRIX_DEBUG))
113	stargo	1254	fprintf(stderr, "sgi_close: begin\n");
114	stargo	744	#endif
115	astrand	746
116	stargo	1254	while (!rdpsnd_queue_empty())
117	ossman_	1304	rdpsnd_queue_next(0);
118	astrand	746	alDiscardFrames(output_port, 0);
119
120	stargo	744	alClosePort(output_port);
121	ossman_	1346	output_port = (ALport) 0;
122	stargo	744	alFreeConfig(audioconfig);
123			#if (defined(IRIX_DEBUG))
124	stargo	1254	fprintf(stderr, "sgi_close: returning\n");
125	stargo	744	#endif
126			}
127
128			BOOL
129	stargo	1255	sgi_format_supported(WAVEFORMATEX * pwfx)
130	stargo	744	{
131			if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
132			return False;
133			if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
134			return False;
135			if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
136			return False;
137
138			return True;
139			}
140
141			BOOL
142	stargo	1255	sgi_set_format(WAVEFORMATEX * pwfx)
143	stargo	744	{
144			int channels;
145	astrand	746	int frameSize, channelCount;
146			ALpv params;
147
148	stargo	744	#if (defined(IRIX_DEBUG))
149	stargo	1254	fprintf(stderr, "sgi_set_format: init...\n");
150	stargo	744	#endif
151
152			if (pwfx->wBitsPerSample == 8)
153			width = AL_SAMPLE_8;
154	astrand	746	else if (pwfx->wBitsPerSample == 16)
155	stargo	744	width = AL_SAMPLE_16;
156
157	stargo	912	/* Limited support to configure an opened audio port in IRIX. The
158	astrand	909	number of channels is a static setting and can not be changed after
159	stargo	912	a port is opened. So if the number of channels remains the same, we
160			can configure other settings; otherwise we have to reopen the audio
161	astrand	909	port, using same config. */
162	stargo	897
163	stargo	744	channels = pwfx->nChannels;
164			g_snd_rate = pwfx->nSamplesPerSec;
165
166			alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP);
167			alSetWidth(audioconfig, width);
168	astrand	909	if (channels != alGetChannels(audioconfig))
169	stargo	897	{
170			alClosePort(output_port);
171			alSetChannels(audioconfig, channels);
172			output_port = alOpenPort("rdpsnd", "w", audioconfig);
173	stargo	744
174	stargo	897	if (output_port == (ALport) 0)
175			{
176	stargo	1254	fprintf(stderr, "sgi_set_format: alOpenPort failed: %s\n",
177	astrand	909	alGetErrorString(oserror()));
178	stargo	897	return False;
179			}
180	stargo	744
181			}
182
183			resource = alGetResource(output_port);
184			maxFillable = alGetFillable(output_port);
185	astrand	746	channelCount = alGetChannels(audioconfig);
186			frameSize = alGetWidth(audioconfig);
187	stargo	744
188	astrand	746	if (frameSize == 0 \|\| channelCount == 0)
189			{
190	stargo	1254	fprintf(stderr, "sgi_set_format: bad frameSize or channelCount\n");
191	astrand	746	return False;
192			}
193			combinedFrameSize = frameSize * channelCount;
194	stargo	744
195	astrand	746	params.param = AL_RATE;
196			params.value.ll = (long long) g_snd_rate << 32;
197	stargo	744
198	astrand	746	if (alSetParams(resource, &params, 1) < 0)
199			{
200			fprintf(stderr, "wave_set_format: alSetParams failed: %s\n",
201			alGetErrorString(oserror()));
202			return False;
203			}
204			if (params.sizeOut < 0)
205			{
206			fprintf(stderr, "wave_set_format: invalid rate %d\n", g_snd_rate);
207			return False;
208			}
209	stargo	744
210			#if (defined(IRIX_DEBUG))
211	stargo	1254	fprintf(stderr, "sgi_set_format: returning...\n");
212	stargo	744	#endif
213			return True;
214			}
215
216			void
217	stargo	1255	sgi_volume(uint16 left, uint16 right)
218	stargo	744	{
219	astrand	746	double gainleft, gainright;
220			ALpv pv[1];
221			ALfixed gain[8];
222	stargo	744
223			#if (defined(IRIX_DEBUG))
224	stargo	1254	fprintf(stderr, "sgi_volume: begin\n");
225	astrand	746	fprintf(stderr, "left='%d', right='%d'\n", left, right);
226	stargo	744	#endif
227	astrand	746
228			gainleft = (double) left / IRIX_MAX_VOL;
229	stargo	744	gainright = (double) right / IRIX_MAX_VOL;
230
231	astrand	746	gain[0] = alDoubleToFixed(min_volume + gainleft * volume_range);
232			gain[1] = alDoubleToFixed(min_volume + gainright * volume_range);
233	stargo	744
234	astrand	746	pv[0].param = AL_GAIN;
235			pv[0].value.ptr = gain;
236			pv[0].sizeIn = 8;
237			if (alSetParams(AL_DEFAULT_OUTPUT, pv, 1) < 0)
238			{
239	stargo	1254	fprintf(stderr, "sgi_volume: alSetParams failed: %s\n",
240	astrand	746	alGetErrorString(oserror()));
241			return;
242			}
243	stargo	744
244			#if (defined(IRIX_DEBUG))
245	stargo	1254	fprintf(stderr, "sgi_volume: returning\n");
246	stargo	744	#endif
247			}
248
249			void
250	stargo	1255	sgi_play(void)
251	stargo	744	{
252			struct audio_packet *packet;
253			ssize_t len;
254			unsigned int i;
255			STREAM out;
256			int gf;
257
258			while (1)
259			{
260	stargo	1254	if (rdpsnd_queue_empty())
261	stargo	744	return;
262
263	stargo	1254	packet = rdpsnd_queue_current_packet();
264	stargo	744	out = &packet->s;
265
266			len = out->end - out->p;
267
268	astrand	746	alWriteFrames(output_port, out->p, len / combinedFrameSize);
269	stargo	744
270			out->p += len;
271			if (out->p == out->end)
272			{
273	stargo	897	gf = alGetFilled(output_port);
274	astrand	909	if (gf < (4 * maxFillable / 10))
275	stargo	744	{
276	ossman_	1302	rdpsnd_queue_next(0);
277	stargo	744	}
278			else
279			{
280			#if (defined(IRIX_DEBUG))
281	stargo	897	/* fprintf(stderr,"Busy playing...\n"); */
282	stargo	744	#endif
283	astrand	1032	usleep(10);
284	stargo	744	return;
285			}
286			}
287			}
288			}
289	stargo	1255
290	ossman_	1345	static struct audio_driver sgi_driver = {
291			.name = "sgi",
292			.description = "SGI output driver",
293
294	ossman_	1346	.add_fds = sgi_add_fds,
295			.check_fds = sgi_check_fds,
296
297	ossman_	1345	.wave_out_open = sgi_open,
298			.wave_out_close = sgi_close,
299			.wave_out_format_supported = sgi_format_supported,
300			.wave_out_set_format = sgi_set_format,
301			.wave_out_volume = sgi_volume,
302
303			.need_byteswap_on_be = 1,
304			.need_resampling = 0,
305			};
306
307	stargo	1255	struct audio_driver *
308			sgi_register(char *options)
309			{
310			if (options)
311			{
312			sgi_output_device = xstrdup(options);
313			}
314			return &sgi_driver;
315			}