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 BOOL g_swapaudio;
static int g_snd_rate;
static BOOL g_swapaudio;
static int width = AL_SAMPLE_16;

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

BOOL
wave_out_open(void)
{
        ALparamInfo pinfo;

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

        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
wave_out_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
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)
{
        int channels;
        int frameSize, channelCount;
        ALpv params;

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

        g_swapaudio = False;
        if (pwfx->wBitsPerSample == 8)
                width = AL_SAMPLE_8;
        else if (pwfx->wBitsPerSample == 16)
        {
                width = AL_SAMPLE_16;
                /* Do we need to swap the 16bit values? (Are we BigEndian) */
#if (defined(B_ENDIAN))
                g_swapaudio = 1;
#else
                g_swapaudio = 0;
#endif
        }

        /* 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
wave_out_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
wave_out_play(void)
{
        struct audio_packet *packet;
        ssize_t len;
        unsigned int i;
        uint8 swap;
        STREAM out;
        static BOOL swapped = False;
        int gf;

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

                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();
                                swapped = False;
                        }
                        else
                        {
#if (defined(IRIX_DEBUG))
/*                              fprintf(stderr,"Busy playing...\n"); */
#endif
                                g_dsp_busy = True;
                                usleep(10);
                                return;
                        }
                }
        }
}
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 BOOL g_swapaudio;
35			static int g_snd_rate;
36			static BOOL g_swapaudio;
37			static int width = AL_SAMPLE_16;
38
39			double min_volume, max_volume, volume_range;
40			int resource, maxFillable;
41			int combinedFrameSize;
42
43			BOOL
44			wave_out_open(void)
45			{
46	astrand	746	ALparamInfo pinfo;
47	stargo	744
48			#if (defined(IRIX_DEBUG))
49	stargo	1254	fprintf(stderr, "sgi_open: begin\n");
50	stargo	744	#endif
51
52	astrand	746	if (alGetParamInfo(AL_DEFAULT_OUTPUT, AL_GAIN, &pinfo) < 0)
53			{
54	stargo	1254	fprintf(stderr, "sgi_open: alGetParamInfo failed: %s\n",
55	astrand	746	alGetErrorString(oserror()));
56			}
57			min_volume = alFixedToDouble(pinfo.min.ll);
58			max_volume = alFixedToDouble(pinfo.max.ll);
59			volume_range = (max_volume - min_volume);
60	stargo	744	#if (defined(IRIX_DEBUG))
61	stargo	1254	fprintf(stderr, "sgi_open: minvol = %lf, maxvol= %lf, range = %lf.\n",
62	astrand	746	min_volume, max_volume, volume_range);
63	stargo	744	#endif
64
65	stargo	1254	rdpsnd_queue_init();
66	stargo	744
67			audioconfig = alNewConfig();
68	stargo	912	if (audioconfig == (ALconfig) 0)
69	astrand	746	{
70	stargo	1254	fprintf(stderr, "sgi_open: alNewConfig failed: %s\n", alGetErrorString(oserror()));
71	stargo	744	return False;
72			}
73
74			output_port = alOpenPort("rdpsnd", "w", 0);
75	astrand	746	if (output_port == (ALport) 0)
76			{
77	stargo	1254	fprintf(stderr, "sgi_open: alOpenPort failed: %s\n", alGetErrorString(oserror()));
78	stargo	744	return False;
79			}
80
81			#if (defined(IRIX_DEBUG))
82	stargo	1254	fprintf(stderr, "sgi_open: returning\n");
83	stargo	744	#endif
84			return True;
85			}
86
87			void
88			wave_out_close(void)
89			{
90			/* Ack all remaining packets */
91			#if (defined(IRIX_DEBUG))
92	stargo	1254	fprintf(stderr, "sgi_close: begin\n");
93	stargo	744	#endif
94	astrand	746
95	stargo	1254	while (!rdpsnd_queue_empty())
96	stargo	744	{
97	stargo	1254	/* We need to add 50 to tell windows that time has passed while
98			* playing this packet */
99			rdpsnd_send_completion(rdpsnd_queue_current_packet()->tick + 50,
100			rdpsnd_queue_current_packet()->index);
101			rdpsnd_queue_next();
102	stargo	744	}
103	astrand	746	alDiscardFrames(output_port, 0);
104
105	stargo	744	alClosePort(output_port);
106			alFreeConfig(audioconfig);
107			#if (defined(IRIX_DEBUG))
108	stargo	1254	fprintf(stderr, "sgi_close: returning\n");
109	stargo	744	#endif
110			}
111
112			BOOL
113			wave_out_format_supported(WAVEFORMATEX * pwfx)
114			{
115			if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
116			return False;
117			if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
118			return False;
119			if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
120			return False;
121
122			return True;
123			}
124
125			BOOL
126			wave_out_set_format(WAVEFORMATEX * pwfx)
127			{
128			int channels;
129	astrand	746	int frameSize, channelCount;
130			ALpv params;
131
132	stargo	744	#if (defined(IRIX_DEBUG))
133	stargo	1254	fprintf(stderr, "sgi_set_format: init...\n");
134	stargo	744	#endif
135
136			g_swapaudio = False;
137			if (pwfx->wBitsPerSample == 8)
138			width = AL_SAMPLE_8;
139	astrand	746	else if (pwfx->wBitsPerSample == 16)
140			{
141	stargo	744	width = AL_SAMPLE_16;
142			/* Do we need to swap the 16bit values? (Are we BigEndian) */
143	stargo	897	#if (defined(B_ENDIAN))
144	stargo	744	g_swapaudio = 1;
145			#else
146			g_swapaudio = 0;
147			#endif
148			}
149
150	stargo	912	/* Limited support to configure an opened audio port in IRIX. The
151	astrand	909	number of channels is a static setting and can not be changed after
152	stargo	912	a port is opened. So if the number of channels remains the same, we
153			can configure other settings; otherwise we have to reopen the audio
154	astrand	909	port, using same config. */
155	stargo	897
156	stargo	744	channels = pwfx->nChannels;
157			g_snd_rate = pwfx->nSamplesPerSec;
158
159			alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP);
160			alSetWidth(audioconfig, width);
161	astrand	909	if (channels != alGetChannels(audioconfig))
162	stargo	897	{
163			alClosePort(output_port);
164			alSetChannels(audioconfig, channels);
165			output_port = alOpenPort("rdpsnd", "w", audioconfig);
166	stargo	744
167	stargo	897	if (output_port == (ALport) 0)
168			{
169	stargo	1254	fprintf(stderr, "sgi_set_format: alOpenPort failed: %s\n",
170	astrand	909	alGetErrorString(oserror()));
171	stargo	897	return False;
172			}
173	stargo	744
174			}
175
176			resource = alGetResource(output_port);
177			maxFillable = alGetFillable(output_port);
178	astrand	746	channelCount = alGetChannels(audioconfig);
179			frameSize = alGetWidth(audioconfig);
180	stargo	744
181	astrand	746	if (frameSize == 0 \|\| channelCount == 0)
182			{
183	stargo	1254	fprintf(stderr, "sgi_set_format: bad frameSize or channelCount\n");
184	astrand	746	return False;
185			}
186			combinedFrameSize = frameSize * channelCount;
187	stargo	744
188	astrand	746	params.param = AL_RATE;
189			params.value.ll = (long long) g_snd_rate << 32;
190	stargo	744
191	astrand	746	if (alSetParams(resource, &params, 1) < 0)
192			{
193			fprintf(stderr, "wave_set_format: alSetParams failed: %s\n",
194			alGetErrorString(oserror()));
195			return False;
196			}
197			if (params.sizeOut < 0)
198			{
199			fprintf(stderr, "wave_set_format: invalid rate %d\n", g_snd_rate);
200			return False;
201			}
202	stargo	744
203			#if (defined(IRIX_DEBUG))
204	stargo	1254	fprintf(stderr, "sgi_set_format: returning...\n");
205	stargo	744	#endif
206			return True;
207			}
208
209			void
210			wave_out_volume(uint16 left, uint16 right)
211			{
212	astrand	746	double gainleft, gainright;
213			ALpv pv[1];
214			ALfixed gain[8];
215	stargo	744
216			#if (defined(IRIX_DEBUG))
217	stargo	1254	fprintf(stderr, "sgi_volume: begin\n");
218	astrand	746	fprintf(stderr, "left='%d', right='%d'\n", left, right);
219	stargo	744	#endif
220	astrand	746
221			gainleft = (double) left / IRIX_MAX_VOL;
222	stargo	744	gainright = (double) right / IRIX_MAX_VOL;
223
224	astrand	746	gain[0] = alDoubleToFixed(min_volume + gainleft * volume_range);
225			gain[1] = alDoubleToFixed(min_volume + gainright * volume_range);
226	stargo	744
227	astrand	746	pv[0].param = AL_GAIN;
228			pv[0].value.ptr = gain;
229			pv[0].sizeIn = 8;
230			if (alSetParams(AL_DEFAULT_OUTPUT, pv, 1) < 0)
231			{
232	stargo	1254	fprintf(stderr, "sgi_volume: alSetParams failed: %s\n",
233	astrand	746	alGetErrorString(oserror()));
234			return;
235			}
236	stargo	744
237			#if (defined(IRIX_DEBUG))
238	stargo	1254	fprintf(stderr, "sgi_volume: returning\n");
239	stargo	744	#endif
240			}
241
242			void
243			wave_out_play(void)
244			{
245			struct audio_packet *packet;
246			ssize_t len;
247			unsigned int i;
248			uint8 swap;
249			STREAM out;
250			static BOOL swapped = False;
251			int gf;
252
253			while (1)
254			{
255	stargo	1254	if (rdpsnd_queue_empty())
256	stargo	744	{
257			g_dsp_busy = False;
258			return;
259			}
260
261	stargo	1254	packet = rdpsnd_queue_current_packet();
262	stargo	744	out = &packet->s;
263
264			/* Swap the current packet, but only once */
265			if (g_swapaudio && !swapped)
266			{
267			for (i = 0; i < out->end - out->p; i += 2)
268			{
269			swap = *(out->p + i);
270			(out->p + i) = (out->p + i + 1);
271			*(out->p + i + 1) = swap;
272			}
273			swapped = True;
274			}
275
276			len = out->end - out->p;
277
278	astrand	746	alWriteFrames(output_port, out->p, len / combinedFrameSize);
279	stargo	744
280			out->p += len;
281			if (out->p == out->end)
282			{
283	stargo	897	gf = alGetFilled(output_port);
284	astrand	909	if (gf < (4 * maxFillable / 10))
285	stargo	744	{
286			rdpsnd_send_completion(packet->tick, packet->index);
287	stargo	1254	rdpsnd_queue_next();
288	stargo	744	swapped = False;
289			}
290			else
291			{
292			#if (defined(IRIX_DEBUG))
293	stargo	897	/* fprintf(stderr,"Busy playing...\n"); */
294	stargo	744	#endif
295			g_dsp_busy = True;
296	astrand	1032	usleep(10);
297	stargo	744	return;
298			}
299			}
300			}
301			}