/[rdesktop]/jpeg/rdesktop/trunk/rdpsnd_sun.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 560 by stargo, Thu Dec 11 14:59:54 2003 UTC revision 1302 by ossman_, Thu Oct 26 09:47:17 2006 UTC
# Line 1  Line 1 
1  /*  /* -*- c-basic-offset: 8 -*-
2     rdesktop: A Remote Desktop Protocol client.     rdesktop: A Remote Desktop Protocol client.
3     Sound Channel Process Functions - Sun     Sound Channel Process Functions - Sun
4     Copyright (C) Matthew Chapman 2003     Copyright (C) Matthew Chapman 2003
5     Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003     Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003
6     Copyright (C) Michael Gernoth mike@zerfleddert.de 2003     Copyright (C) Michael Gernoth mike@zerfleddert.de 2003-2006
7    
8     This program is free software; you can redistribute it and/or modify     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     it under the terms of the GNU General Public License as published by
# Line 21  Line 21 
21  */  */
22    
23  #include "rdesktop.h"  #include "rdesktop.h"
24    #include "rdpsnd.h"
25  #include <unistd.h>  #include <unistd.h>
26  #include <fcntl.h>  #include <fcntl.h>
27  #include <errno.h>  #include <errno.h>
# Line 31  Line 32 
32  #include <stropts.h>  #include <stropts.h>
33  #endif  #endif
34    
35  #define MAX_QUEUE       10  #define DEFAULTDEVICE   "/dev/audio"
36    
 int g_dsp_fd;  
 BOOL g_dsp_busy = False;  
37  static BOOL g_reopened;  static BOOL g_reopened;
 static BOOL g_swapaudio;  
38  static short g_samplewidth;  static short g_samplewidth;
39    static char *dsp_dev;
 static struct audio_packet  
 {  
         struct stream s;  
         uint16 tick;  
         uint8 index;  
 } packet_queue[MAX_QUEUE];  
 static unsigned int queue_hi, queue_lo;  
40    
41  BOOL  BOOL
42  wave_out_open(void)  sun_open(void)
43  {  {
         char *dsp_dev = getenv("AUDIODEV");  
   
         if (dsp_dev == NULL)  
         {  
                 dsp_dev = "/dev/audio";  
         }  
   
44          if ((g_dsp_fd = open(dsp_dev, O_WRONLY | O_NONBLOCK)) == -1)          if ((g_dsp_fd = open(dsp_dev, O_WRONLY | O_NONBLOCK)) == -1)
45          {          {
46                  perror(dsp_dev);                  perror(dsp_dev);
# Line 66  wave_out_open(void) Line 50  wave_out_open(void)
50          /* Non-blocking so that user interface is responsive */          /* Non-blocking so that user interface is responsive */
51          fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) | O_NONBLOCK);          fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) | O_NONBLOCK);
52    
         queue_lo = queue_hi = 0;  
53          g_reopened = True;          g_reopened = True;
54    
55          return True;          return True;
56  }  }
57    
58  void  void
59  wave_out_close(void)  sun_close(void)
60  {  {
61          /* Ack all remaining packets */          /* Ack all remaining packets */
62          while (queue_lo != queue_hi)          while (!rdpsnd_queue_empty())
63          {          {
64                  rdpsnd_send_completion(packet_queue[queue_lo].tick, packet_queue[queue_lo].index);                  rdpsnd_send_completion(rdpsnd_queue_current_packet()->tick,
65                  free(packet_queue[queue_lo].s.data);                                         rdpsnd_queue_current_packet()->index);
66                  queue_lo = (queue_lo + 1) % MAX_QUEUE;                  rdpsnd_queue_next();
67          }          }
68    
69  #if defined I_FLUSH && defined FLUSHW  #if defined I_FLUSH && defined FLUSHW
70          /* Flush the audiobuffer */          /* Flush the audiobuffer */
71          ioctl(g_dsp_fd, I_FLUSH, FLUSHW);          ioctl(g_dsp_fd, I_FLUSH, FLUSHW);
72  #endif  #endif
73    #if defined AUDIO_FLUSH
74            ioctl(g_dsp_fd, AUDIO_FLUSH, NULL);
75    #endif
76          close(g_dsp_fd);          close(g_dsp_fd);
77  }  }
78    
79  BOOL  BOOL
80  wave_out_format_supported(WAVEFORMATEX * pwfx)  sun_format_supported(WAVEFORMATEX * pwfx)
81  {  {
82          if (pwfx->wFormatTag != WAVE_FORMAT_PCM)          if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
83                  return False;                  return False;
# Line 104  wave_out_format_supported(WAVEFORMATEX * Line 90  wave_out_format_supported(WAVEFORMATEX *
90  }  }
91    
92  BOOL  BOOL
93  wave_out_set_format(WAVEFORMATEX * pwfx)  sun_set_format(WAVEFORMATEX * pwfx)
94  {  {
95          audio_info_t info;          audio_info_t info;
         int test = 1;  
96    
97          ioctl(g_dsp_fd, AUDIO_DRAIN, 0);          ioctl(g_dsp_fd, AUDIO_DRAIN, 0);
         g_swapaudio = False;  
98          AUDIO_INITINFO(&info);          AUDIO_INITINFO(&info);
99    
100    
# Line 121  wave_out_set_format(WAVEFORMATEX * pwfx) Line 105  wave_out_set_format(WAVEFORMATEX * pwfx)
105          else if (pwfx->wBitsPerSample == 16)          else if (pwfx->wBitsPerSample == 16)
106          {          {
107                  info.play.encoding = AUDIO_ENCODING_LINEAR;                  info.play.encoding = AUDIO_ENCODING_LINEAR;
                 /* Do we need to swap the 16bit values? (Are we BigEndian) */  
                 g_swapaudio = !(*(uint8 *) (&test));  
108          }          }
109    
110          g_samplewidth = pwfx->wBitsPerSample / 8;          g_samplewidth = pwfx->wBitsPerSample / 8;
# Line 155  wave_out_set_format(WAVEFORMATEX * pwfx) Line 137  wave_out_set_format(WAVEFORMATEX * pwfx)
137  }  }
138    
139  void  void
140  wave_out_volume(uint16 left, uint16 right)  sun_volume(uint16 left, uint16 right)
141  {  {
142          audio_info_t info;          audio_info_t info;
143          uint balance;          uint balance;
144          uint volume;          uint volume;
145    
146          if (ioctl(g_dsp_fd, AUDIO_GETINFO, &info) == -1)          AUDIO_INITINFO(&info);
         {  
                 perror("AUDIO_GETINFO");  
                 return;  
         }  
147    
148          volume = (left > right) ? left : right;          volume = (left > right) ? left : right;
149    
# Line 191  wave_out_volume(uint16 left, uint16 righ Line 169  wave_out_volume(uint16 left, uint16 righ
169  }  }
170    
171  void  void
172  wave_out_write(STREAM s, uint16 tick, uint8 index)  sun_play(void)
 {  
         struct audio_packet *packet = &packet_queue[queue_hi];  
         unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE;  
   
         if (next_hi == queue_lo)  
         {  
                 error("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)  
173  {  {
174          struct audio_packet *packet;          struct audio_packet *packet;
175          audio_info_t info;          audio_info_t info;
176          ssize_t len;          ssize_t len;
177          unsigned int i;          unsigned int i;
         uint8 swap;  
178          STREAM out;          STREAM out;
         static BOOL swapped = False;  
179          static BOOL sentcompletion = True;          static BOOL sentcompletion = True;
180          static uint32 samplecnt = 0;          static uint32 samplecnt = 0;
181          static uint32 numsamples;          static uint32 numsamples;
# Line 236  wave_out_play(void) Line 186  wave_out_play(void)
186                  {                  {
187                          /* Device was just (re)openend */                          /* Device was just (re)openend */
188                          samplecnt = 0;                          samplecnt = 0;
                         swapped = False;  
189                          sentcompletion = True;                          sentcompletion = True;
190                          g_reopened = False;                          g_reopened = False;
191                  }                  }
192    
193                  if (queue_lo == queue_hi)                  if (rdpsnd_queue_empty())
194                  {                  {
195                          g_dsp_busy = 0;                          g_dsp_busy = 0;
196                          return;                          return;
197                  }                  }
198    
199                  packet = &packet_queue[queue_lo];                  packet = rdpsnd_queue_current_packet();
200                  out = &packet->s;                  out = &packet->s;
201    
                 /* 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;  
                 }  
   
202                  if (sentcompletion)                  if (sentcompletion)
203                  {                  {
204                          sentcompletion = False;                          sentcompletion = False;
# Line 295  wave_out_play(void) Line 232  wave_out_play(void)
232                          if (info.play.samples >= samplecnt + ((numsamples * 7) / 10))                          if (info.play.samples >= samplecnt + ((numsamples * 7) / 10))
233                          {                          {
234                                  samplecnt += numsamples;                                  samplecnt += numsamples;
235                                  rdpsnd_send_completion(packet->tick, packet->index);                                  /* We need to add 50 to tell windows that time has passed while
236                                  free(out->data);                                   * playing this packet */
237                                  queue_lo = (queue_lo + 1) % MAX_QUEUE;                                  rdpsnd_queue_next(50);
                                 swapped = False;  
238                                  sentcompletion = True;                                  sentcompletion = True;
239                          }                          }
240                          else                          else
# Line 309  wave_out_play(void) Line 245  wave_out_play(void)
245                  }                  }
246          }          }
247  }  }
248    
249    struct audio_driver *
250    sun_register(char *options)
251    {
252            static struct audio_driver sun_driver;
253    
254            sun_driver.wave_out_open = sun_open;
255            sun_driver.wave_out_close = sun_close;
256            sun_driver.wave_out_format_supported = sun_format_supported;
257            sun_driver.wave_out_set_format = sun_set_format;
258            sun_driver.wave_out_volume = sun_volume;
259            sun_driver.wave_out_play = sun_play;
260            sun_driver.name = xstrdup("sun");
261            sun_driver.description =
262                    xstrdup("SUN/BSD output driver, default device: " DEFAULTDEVICE " or $AUDIODEV");
263            sun_driver.need_byteswap_on_be = 1;
264            sun_driver.need_resampling = 0;
265            sun_driver.next = NULL;
266    
267            if (options)
268            {
269                    dsp_dev = xstrdup(options);
270            }
271            else
272            {
273                    dsp_dev = getenv("AUDIODEV");
274    
275                    if (dsp_dev == NULL)
276                    {
277                            dsp_dev = xstrdup(DEFAULTDEVICE);
278                    }
279            }
280    
281            return &sun_driver;
282    }
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