trunk/rdesktop/rdpsnd_sgi.c

/* 
   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) Michael Gernoth mike@zerfleddert.de 2003

   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

#define MAX_QUEUE       10

int g_dsp_fd;
ALconfig audioconfig;
ALport output_port;

BOOL g_dsp_busy = False;
static BOOL g_swapaudio;
static int g_snd_rate;
static BOOL g_swapaudio;
static short g_samplewidth;
static int width = AL_SAMPLE_16;

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

static struct audio_packet
{
        struct stream s;
        uint16 tick;
        uint8 index;
} packet_queue[MAX_QUEUE];
static unsigned int queue_hi, queue_lo;

BOOL
wave_out_open(void)
{
  ALparamInfo pinfo;

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

  if ( alGetParamInfo(AL_DEFAULT_OUTPUT, AL_GAIN, &pinfo) < 0 )
  {
    fprintf(stderr, "wave_out_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, "wave_out_open: minvol = %lf, maxvol= %lf, range = %lf.\n",
                                                min_volume, max_volume, volume_range);
#endif

        queue_lo = queue_hi = 0;

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

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

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

void
wave_out_close(void)
{
        /* Ack all remaining packets */
#if (defined(IRIX_DEBUG))
    fprintf(stderr, "wave_out_close: begin\n");
#endif
        
        while (queue_lo != queue_hi)
        {
                rdpsnd_send_completion(packet_queue[queue_lo].tick, packet_queue[queue_lo].index);
                free(packet_queue[queue_lo].s.data);
                queue_lo = (queue_lo + 1) % MAX_QUEUE;
        }
        alDiscardFrames(output_port, 0);        
        
        alClosePort(output_port);
        alFreeConfig(audioconfig);
#if (defined(IRIX_DEBUG))
    fprintf(stderr, "wave_out_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, "wave_out_set_format: init...\n");
#endif
        /* limited support to configure an opened audio port in IRIX */
        /* have to reopen the audio port, using same config */
        alClosePort(output_port);

        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(IRIX_DEBUG))
                g_swapaudio = 1;
#else
                g_swapaudio = 0;
#endif
        }

        g_samplewidth = pwfx->wBitsPerSample / 8;
        channels = pwfx->nChannels;
        g_snd_rate = pwfx->nSamplesPerSec;

        alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP);
        alSetWidth(audioconfig, width);
        alSetChannels(audioconfig, channels);

        output_port = alOpenPort("rdpsnd", "w", audioconfig);

        if (output_port == (ALport) 0) { 
    fprintf(stderr, "wave_out_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, "wave_out_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, "wave_out_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, "wave_out_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, "wave_out_volume: alSetParams failed: %s\n", alGetErrorString(oserror()));
    return;
  }

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

void
wave_out_write(STREAM s, uint16 tick, uint8 index)
{
        struct audio_packet *packet = &packet_queue[queue_hi];
        unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE;

        if (next_hi == queue_lo)
        {
                fprintf(stderr, "No space to queue audio packet\n");
                return;
        }

        queue_hi = next_hi;

        packet->s = *s;
        packet->tick = tick;
        packet->index = index;
        packet->s.p += 4;

        /* we steal the data buffer from s, give it a new one */
        s->data = malloc(s->size);

        if (!g_dsp_busy)
                wave_out_play();
}

void
wave_out_play(void)
{
        struct audio_packet *packet;
        ssize_t len;
        unsigned int i;
        uint8 swap;
        STREAM out;
        static long startedat_us;
        static long startedat_s;
        static BOOL started = False;
        static BOOL swapped = False;
        struct timeval tv;
        int gf;
        static long long temp;

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

                packet = &packet_queue[queue_lo];
                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 (!started)
                {
                        gettimeofday(&tv, NULL);
                        startedat_us = tv.tv_usec;
                        startedat_s = tv.tv_sec;
                        started = True;
                }

                len = out->end - out->p;
                gf = alGetFillable(output_port);                
                if (len > gf) {
                        //len = gf * combinedFrameSize;
#if (defined(IRIX_DEBUG))
                        //fprintf(stderr,"Fillable...\n");
#endif
                }

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

                out->p += len;
                if (out->p == out->end)
                {
                        long long duration;
                        long elapsed;

                        gettimeofday(&tv, NULL);
                        duration = (out->size * (1000000 / (g_samplewidth * g_snd_rate)));
                        elapsed =  (tv.tv_sec - startedat_s) * 1000000 
                                       + (tv.tv_usec - startedat_us);
                        /* 7/10 is not good for IRIX audio port, 4x/100 is suitable */
                        if (elapsed >= (duration * 485) / 1000)
                        {
                                rdpsnd_send_completion(packet->tick, packet->index);
                                free(out->data);
                                queue_lo = (queue_lo + 1) % MAX_QUEUE;
                                started = False;
                                swapped = False;
                        }
                        else
                        {
#if (defined(IRIX_DEBUG))
                                //fprintf(stderr,"Busy playing...\n");
#endif
                                g_dsp_busy = True;
                                return;
                        }
                }
        }
}
1	stargo	744	/*
2			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			Copyright (C) Michael Gernoth mike@zerfleddert.de 2003
7
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			#define IRIX_DEBUG 1
28
29			#define IRIX_MAX_VOL 65535
30
31			#define MAX_QUEUE 10
32
33			int g_dsp_fd;
34			ALconfig audioconfig;
35			ALport output_port;
36
37			BOOL g_dsp_busy = False;
38			static BOOL g_swapaudio;
39			static int g_snd_rate;
40			static BOOL g_swapaudio;
41			static short g_samplewidth;
42			static int width = AL_SAMPLE_16;
43
44			double min_volume, max_volume, volume_range;
45			int resource, maxFillable;
46			int combinedFrameSize;
47
48			static struct audio_packet
49			{
50			struct stream s;
51			uint16 tick;
52			uint8 index;
53			} packet_queue[MAX_QUEUE];
54			static unsigned int queue_hi, queue_lo;
55
56			BOOL
57			wave_out_open(void)
58			{
59			ALparamInfo pinfo;
60
61			#if (defined(IRIX_DEBUG))
62			fprintf(stderr, "wave_out_open: begin\n");
63			#endif
64
65			if ( alGetParamInfo(AL_DEFAULT_OUTPUT, AL_GAIN, &pinfo) < 0 )
66			{
67			fprintf(stderr, "wave_out_open: alGetParamInfo failed: %s\n",
68			alGetErrorString(oserror()));
69			}
70			min_volume = alFixedToDouble(pinfo.min.ll);
71			max_volume = alFixedToDouble(pinfo.max.ll);
72			volume_range = (max_volume - min_volume);
73			#if (defined(IRIX_DEBUG))
74			fprintf(stderr, "wave_out_open: minvol = %lf, maxvol= %lf, range = %lf.\n",
75			min_volume, max_volume, volume_range);
76			#endif
77
78			queue_lo = queue_hi = 0;
79
80			audioconfig = alNewConfig();
81			if (audioconfig < 0) {
82			fprintf(stderr, "wave_out_open: alNewConfig failed: %s\n",
83			alGetErrorString(oserror()));
84			return False;
85			}
86
87			output_port = alOpenPort("rdpsnd", "w", 0);
88			if (output_port == (ALport) 0) {
89			fprintf(stderr, "wave_out_open: alOpenPort failed: %s\n",
90			alGetErrorString(oserror()));
91			return False;
92			}
93
94			#if (defined(IRIX_DEBUG))
95			fprintf(stderr, "wave_out_open: returning\n");
96			#endif
97			return True;
98			}
99
100			void
101			wave_out_close(void)
102			{
103			/* Ack all remaining packets */
104			#if (defined(IRIX_DEBUG))
105			fprintf(stderr, "wave_out_close: begin\n");
106			#endif
107
108			while (queue_lo != queue_hi)
109			{
110			rdpsnd_send_completion(packet_queue[queue_lo].tick, packet_queue[queue_lo].index);
111			free(packet_queue[queue_lo].s.data);
112			queue_lo = (queue_lo + 1) % MAX_QUEUE;
113			}
114			alDiscardFrames(output_port, 0);
115
116			alClosePort(output_port);
117			alFreeConfig(audioconfig);
118			#if (defined(IRIX_DEBUG))
119			fprintf(stderr, "wave_out_close: returning\n");
120			#endif
121			}
122
123			BOOL
124			wave_out_format_supported(WAVEFORMATEX * pwfx)
125			{
126			if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
127			return False;
128			if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
129			return False;
130			if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
131			return False;
132
133			return True;
134			}
135
136			BOOL
137			wave_out_set_format(WAVEFORMATEX * pwfx)
138			{
139			int channels;
140			int frameSize, channelCount;
141			ALpv params;
142
143			#if (defined(IRIX_DEBUG))
144			fprintf(stderr, "wave_out_set_format: init...\n");
145			#endif
146			/* limited support to configure an opened audio port in IRIX */
147			/* have to reopen the audio port, using same config */
148			alClosePort(output_port);
149
150			g_swapaudio = False;
151
152			if (pwfx->wBitsPerSample == 8)
153			width = AL_SAMPLE_8;
154			else if (pwfx->wBitsPerSample == 16) {
155			width = AL_SAMPLE_16;
156			/* Do we need to swap the 16bit values? (Are we BigEndian) */
157			#if (defined(IRIX_DEBUG))
158			g_swapaudio = 1;
159			#else
160			g_swapaudio = 0;
161			#endif
162			}
163
164			g_samplewidth = pwfx->wBitsPerSample / 8;
165			channels = pwfx->nChannels;
166			g_snd_rate = pwfx->nSamplesPerSec;
167
168			alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP);
169			alSetWidth(audioconfig, width);
170			alSetChannels(audioconfig, channels);
171
172			output_port = alOpenPort("rdpsnd", "w", audioconfig);
173
174			if (output_port == (ALport) 0) {
175			fprintf(stderr, "wave_out_set_format: alOpenPort failed: %s\n",
176			alGetErrorString(oserror()));
177			return False;
178			}
179
180			resource = alGetResource(output_port);
181			maxFillable = alGetFillable(output_port);
182			channelCount = alGetChannels(audioconfig);
183			frameSize = alGetWidth(audioconfig);
184
185			if (frameSize == 0 \|\| channelCount == 0)
186			{
187			fprintf(stderr, "wave_out_set_format: bad frameSize or channelCount\n");
188			return False;
189			}
190			combinedFrameSize = frameSize * channelCount;
191
192			params.param = AL_RATE;
193			params.value.ll = (long long) g_snd_rate << 32;
194
195			if (alSetParams(resource, &params, 1) < 0)
196			{
197			fprintf(stderr, "wave_set_format: alSetParams failed: %s\n",
198			alGetErrorString(oserror()));
199			return False;
200			}
201			if( params.sizeOut < 0 )
202			{
203			fprintf(stderr, "wave_set_format: invalid rate %d\n", g_snd_rate);
204			return False;
205			}
206
207			#if (defined(IRIX_DEBUG))
208			fprintf(stderr, "wave_out_set_format: returning...\n");
209			#endif
210			return True;
211			}
212
213			void
214			wave_out_volume(uint16 left, uint16 right)
215			{
216			double gainleft, gainright;
217			ALpv pv[1];
218			ALfixed gain[8];
219
220			#if (defined(IRIX_DEBUG))
221			fprintf(stderr, "wave_out_volume: begin\n");
222			fprintf(stderr, "left='%d', right='%d'\n", left, right);
223			#endif
224
225			gainleft = (double) left / IRIX_MAX_VOL;
226			gainright = (double) right / IRIX_MAX_VOL;
227
228			gain[0] = alDoubleToFixed(min_volume + gainleft * volume_range);
229			gain[1] = alDoubleToFixed(min_volume + gainright * volume_range);
230
231			pv[0].param = AL_GAIN;
232			pv[0].value.ptr = gain;
233			pv[0].sizeIn = 8;
234			if( alSetParams(AL_DEFAULT_OUTPUT, pv, 1) < 0)
235			{
236			fprintf(stderr, "wave_out_volume: alSetParams failed: %s\n", alGetErrorString(oserror()));
237			return;
238			}
239
240			#if (defined(IRIX_DEBUG))
241			fprintf(stderr, "wave_out_volume: returning\n");
242			#endif
243			}
244
245			void
246			wave_out_write(STREAM s, uint16 tick, uint8 index)
247			{
248			struct audio_packet *packet = &packet_queue[queue_hi];
249			unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE;
250
251			if (next_hi == queue_lo)
252			{
253			fprintf(stderr, "No space to queue audio packet\n");
254			return;
255			}
256
257			queue_hi = next_hi;
258
259			packet->s = *s;
260			packet->tick = tick;
261			packet->index = index;
262			packet->s.p += 4;
263
264			/* we steal the data buffer from s, give it a new one */
265			s->data = malloc(s->size);
266
267			if (!g_dsp_busy)
268			wave_out_play();
269			}
270
271			void
272			wave_out_play(void)
273			{
274			struct audio_packet *packet;
275			ssize_t len;
276			unsigned int i;
277			uint8 swap;
278			STREAM out;
279			static long startedat_us;
280			static long startedat_s;
281			static BOOL started = False;
282			static BOOL swapped = False;
283			struct timeval tv;
284			int gf;
285			static long long temp;
286
287			while (1)
288			{
289			if (queue_lo == queue_hi)
290			{
291			g_dsp_busy = False;
292			return;
293			}
294
295			packet = &packet_queue[queue_lo];
296			out = &packet->s;
297
298			/* Swap the current packet, but only once */
299			if (g_swapaudio && !swapped)
300			{
301			for (i = 0; i < out->end - out->p; i += 2)
302			{
303			swap = *(out->p + i);
304			(out->p + i) = (out->p + i + 1);
305			*(out->p + i + 1) = swap;
306			}
307			swapped = True;
308			}
309
310			if (!started)
311			{
312			gettimeofday(&tv, NULL);
313			startedat_us = tv.tv_usec;
314			startedat_s = tv.tv_sec;
315			started = True;
316			}
317
318			len = out->end - out->p;
319			gf = alGetFillable(output_port);
320			if (len > gf) {
321			//len = gf * combinedFrameSize;
322			#if (defined(IRIX_DEBUG))
323			//fprintf(stderr,"Fillable...\n");
324			#endif
325			}
326
327			alWriteFrames(output_port, out->p, len/combinedFrameSize);
328
329			out->p += len;
330			if (out->p == out->end)
331			{
332			long long duration;
333			long elapsed;
334
335			gettimeofday(&tv, NULL);
336			duration = (out->size * (1000000 / (g_samplewidth * g_snd_rate)));
337			elapsed = (tv.tv_sec - startedat_s) * 1000000
338			+ (tv.tv_usec - startedat_us);
339			/* 7/10 is not good for IRIX audio port, 4x/100 is suitable */
340			if (elapsed >= (duration * 485) / 1000)
341			{
342			rdpsnd_send_completion(packet->tick, packet->index);
343			free(out->data);
344			queue_lo = (queue_lo + 1) % MAX_QUEUE;
345			started = False;
346			swapped = False;
347			}
348			else
349			{
350			#if (defined(IRIX_DEBUG))
351			//fprintf(stderr,"Busy playing...\n");
352			#endif
353			g_dsp_busy = True;
354			return;
355			}
356			}
357			}
358			}