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/* -*- c-basic-offset: 8 -*- |
/* -*- 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 2003-2007 |
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 2003-2007 |
7 |
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Copyright 2007 Pierre Ossman <ossman@cendio.se> for Cendio AB |
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This program is free software; you can redistribute it and/or modify |
This program is free software; you can redistribute it and/or modify |
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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 |
22 |
*/ |
*/ |
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|
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#include "rdesktop.h" |
#include "rdesktop.h" |
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#include "rdpsnd.h" |
26 |
#include <unistd.h> |
#include <unistd.h> |
27 |
#include <fcntl.h> |
#include <fcntl.h> |
28 |
#include <errno.h> |
#include <errno.h> |
33 |
#include <stropts.h> |
#include <stropts.h> |
34 |
#endif |
#endif |
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#define MAX_QUEUE 10 |
#define DEFAULTDEVICE "/dev/audio" |
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#define MAX_LEN 512 |
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int g_dsp_fd; |
static int dsp_fd = -1; |
40 |
BOOL g_dsp_busy = False; |
static int dsp_mode; |
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static BOOL g_reopened; |
static int dsp_refs; |
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static BOOL g_swapaudio; |
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static short g_samplewidth; |
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static struct audio_packet |
static RD_BOOL dsp_configured; |
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static RD_BOOL dsp_broken; |
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static RD_BOOL dsp_out; |
47 |
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static RD_BOOL dsp_in; |
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static int stereo; |
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static int format; |
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static uint32 snd_rate; |
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static short samplewidth; |
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static char *dsp_dev; |
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static uint_t written_samples; |
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57 |
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void sun_play(void); |
58 |
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void sun_record(void); |
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static int |
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sun_pause(void) |
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{ |
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audio_info_t info; |
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65 |
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AUDIO_INITINFO(&info); |
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info.record.pause = 1; |
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69 |
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if (ioctl(dsp_fd, AUDIO_SETINFO, &info) == -1) |
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return -1; |
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#if defined I_FLUSH && defined FLUSHR |
73 |
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if (ioctl(dsp_fd, I_FLUSH, FLUSHR) == -1) |
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return -1; |
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#endif |
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return 0; |
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} |
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static int |
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sun_resume(void) |
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{ |
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audio_info_t info; |
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AUDIO_INITINFO(&info); |
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info.record.pause = 0; |
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if (ioctl(dsp_fd, AUDIO_SETINFO, &info) == -1) |
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return -1; |
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return 0; |
93 |
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} |
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95 |
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void |
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sun_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
97 |
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{ |
98 |
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if (dsp_fd == -1) |
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return; |
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101 |
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if (dsp_out && !rdpsnd_queue_empty()) |
102 |
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FD_SET(dsp_fd, wfds); |
103 |
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if (dsp_in) |
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FD_SET(dsp_fd, rfds); |
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if (dsp_fd > *n) |
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*n = dsp_fd; |
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} |
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void |
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sun_check_fds(fd_set * rfds, fd_set * wfds) |
111 |
{ |
{ |
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struct stream s; |
if (FD_ISSET(dsp_fd, wfds)) |
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uint16 tick; |
sun_play(); |
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uint8 index; |
if (FD_ISSET(dsp_fd, rfds)) |
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} packet_queue[MAX_QUEUE]; |
sun_record(); |
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static unsigned int queue_hi, queue_lo; |
} |
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|
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BOOL |
RD_BOOL |
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wave_out_open(void) |
sun_open(int mode) |
120 |
{ |
{ |
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char *dsp_dev = getenv("AUDIODEV"); |
audio_info_t info; |
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if (dsp_fd != -1) |
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{ |
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dsp_refs++; |
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if (dsp_dev == NULL) |
if (dsp_mode == O_RDWR) |
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return True; |
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130 |
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if (dsp_mode == mode) |
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return True; |
132 |
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dsp_refs--; |
134 |
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return False; |
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} |
136 |
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137 |
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dsp_configured = False; |
138 |
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dsp_broken = False; |
139 |
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written_samples = 0; |
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dsp_mode = O_RDWR; |
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dsp_fd = open(dsp_dev, O_RDWR | O_NONBLOCK); |
144 |
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if (dsp_fd != -1) |
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{ |
{ |
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dsp_dev = xstrdup("/dev/audio"); |
AUDIO_INITINFO(&info); |
147 |
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|
148 |
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if ((ioctl(dsp_fd, AUDIO_GETINFO, &info) == -1) |
149 |
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|| !(info.hw_features & AUDIO_HWFEATURE_DUPLEX)) |
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{ |
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close(dsp_fd); |
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dsp_fd = -1; |
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} |
154 |
} |
} |
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|
156 |
if ((g_dsp_fd = open(dsp_dev, O_WRONLY | O_NONBLOCK)) == -1) |
if (dsp_fd == -1) |
157 |
{ |
{ |
158 |
perror(dsp_dev); |
dsp_mode = mode; |
159 |
return False; |
|
160 |
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dsp_fd = open(dsp_dev, dsp_mode | O_NONBLOCK); |
161 |
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if (dsp_fd == -1) |
162 |
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{ |
163 |
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perror(dsp_dev); |
164 |
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return False; |
165 |
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} |
166 |
} |
} |
167 |
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|
168 |
/* Non-blocking so that user interface is responsive */ |
/* |
169 |
fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) | O_NONBLOCK); |
* Pause recording until we actually start using it. |
170 |
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*/ |
171 |
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if (dsp_mode != O_WRONLY) |
172 |
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{ |
173 |
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if (sun_pause() == -1) |
174 |
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{ |
175 |
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close(dsp_fd); |
176 |
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dsp_fd = -1; |
177 |
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return False; |
178 |
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} |
179 |
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} |
180 |
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queue_lo = queue_hi = 0; |
dsp_refs++; |
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g_reopened = True; |
|
182 |
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|
183 |
return True; |
return True; |
184 |
} |
} |
185 |
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|
186 |
void |
void |
187 |
wave_out_close(void) |
sun_close(void) |
188 |
{ |
{ |
189 |
/* Ack all remaining packets */ |
dsp_refs--; |
190 |
while (queue_lo != queue_hi) |
|
191 |
{ |
if (dsp_refs != 0) |
192 |
rdpsnd_send_completion(packet_queue[queue_lo].tick, packet_queue[queue_lo].index); |
return; |
193 |
free(packet_queue[queue_lo].s.data); |
|
194 |
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
close(dsp_fd); |
195 |
} |
dsp_fd = -1; |
196 |
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} |
197 |
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|
198 |
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RD_BOOL |
199 |
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sun_open_out(void) |
200 |
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{ |
201 |
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if (!sun_open(O_WRONLY)) |
202 |
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return False; |
203 |
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204 |
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dsp_out = True; |
205 |
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206 |
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return True; |
207 |
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} |
208 |
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209 |
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void |
210 |
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sun_close_out(void) |
211 |
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{ |
212 |
#if defined I_FLUSH && defined FLUSHW |
#if defined I_FLUSH && defined FLUSHW |
213 |
/* Flush the audiobuffer */ |
/* Flush the audiobuffer */ |
214 |
ioctl(g_dsp_fd, I_FLUSH, FLUSHW); |
ioctl(dsp_fd, I_FLUSH, FLUSHW); |
215 |
#endif |
#endif |
216 |
#if defined AUDIO_FLUSH |
#if defined AUDIO_FLUSH |
217 |
ioctl(g_dsp_fd, AUDIO_FLUSH, NULL); |
ioctl(dsp_fd, AUDIO_FLUSH, NULL); |
218 |
#endif |
#endif |
219 |
close(g_dsp_fd); |
|
220 |
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sun_close(); |
221 |
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222 |
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/* Ack all remaining packets */ |
223 |
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while (!rdpsnd_queue_empty()) |
224 |
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rdpsnd_queue_next(0); |
225 |
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226 |
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dsp_out = False; |
227 |
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} |
228 |
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229 |
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RD_BOOL |
230 |
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sun_open_in(void) |
231 |
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{ |
232 |
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#if ! (defined I_FLUSH && defined FLUSHR) |
233 |
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/* |
234 |
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* It is not possible to reliably use the recording without |
235 |
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* flush operations. |
236 |
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*/ |
237 |
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return False; |
238 |
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#endif |
239 |
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240 |
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if (!sun_open(O_RDONLY)) |
241 |
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return False; |
242 |
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243 |
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/* |
244 |
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* Unpause the stream now that we have someone using it. |
245 |
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*/ |
246 |
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if (sun_resume() == -1) |
247 |
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{ |
248 |
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sun_close(); |
249 |
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return False; |
250 |
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} |
251 |
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252 |
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dsp_in = True; |
253 |
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254 |
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return True; |
255 |
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} |
256 |
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257 |
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void |
258 |
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sun_close_in(void) |
259 |
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{ |
260 |
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/* |
261 |
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* Repause the stream when the user goes away. |
262 |
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*/ |
263 |
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sun_pause(); |
264 |
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265 |
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sun_close(); |
266 |
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267 |
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dsp_in = False; |
268 |
} |
} |
269 |
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|
270 |
BOOL |
RD_BOOL |
271 |
wave_out_format_supported(WAVEFORMATEX * pwfx) |
sun_format_supported(RD_WAVEFORMATEX * pwfx) |
272 |
{ |
{ |
273 |
if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
274 |
return False; |
return False; |
280 |
return True; |
return True; |
281 |
} |
} |
282 |
|
|
283 |
BOOL |
RD_BOOL |
284 |
wave_out_set_format(WAVEFORMATEX * pwfx) |
sun_set_format(RD_WAVEFORMATEX * pwfx) |
285 |
{ |
{ |
286 |
audio_info_t info; |
audio_info_t info; |
287 |
|
|
288 |
ioctl(g_dsp_fd, AUDIO_DRAIN, 0); |
ioctl(dsp_fd, AUDIO_DRAIN, 0); |
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g_swapaudio = False; |
|
289 |
AUDIO_INITINFO(&info); |
AUDIO_INITINFO(&info); |
290 |
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|
291 |
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if (dsp_configured) |
292 |
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{ |
293 |
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if ((pwfx->wBitsPerSample == 8) && (format != AUDIO_ENCODING_LINEAR8)) |
294 |
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return False; |
295 |
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if ((pwfx->wBitsPerSample == 16) && (format != AUDIO_ENCODING_LINEAR)) |
296 |
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return False; |
297 |
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|
298 |
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if ((pwfx->nChannels == 2) != !!stereo) |
299 |
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return False; |
300 |
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|
301 |
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if (pwfx->nSamplesPerSec != snd_rate) |
302 |
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return False; |
303 |
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|
304 |
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return True; |
305 |
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} |
306 |
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307 |
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sun_pause(); |
308 |
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|
309 |
if (pwfx->wBitsPerSample == 8) |
if (pwfx->wBitsPerSample == 8) |
310 |
{ |
{ |
313 |
else if (pwfx->wBitsPerSample == 16) |
else if (pwfx->wBitsPerSample == 16) |
314 |
{ |
{ |
315 |
info.play.encoding = AUDIO_ENCODING_LINEAR; |
info.play.encoding = AUDIO_ENCODING_LINEAR; |
|
/* Do we need to swap the 16bit values? (Are we BigEndian) */ |
|
|
#ifdef B_ENDIAN |
|
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g_swapaudio = 1; |
|
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#else |
|
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g_swapaudio = 0; |
|
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#endif |
|
316 |
} |
} |
317 |
|
|
318 |
g_samplewidth = pwfx->wBitsPerSample / 8; |
samplewidth = pwfx->wBitsPerSample / 8; |
319 |
|
|
320 |
if (pwfx->nChannels == 1) |
if (pwfx->nChannels == 1) |
321 |
{ |
{ |
324 |
else if (pwfx->nChannels == 2) |
else if (pwfx->nChannels == 2) |
325 |
{ |
{ |
326 |
info.play.channels = 2; |
info.play.channels = 2; |
327 |
g_samplewidth *= 2; |
samplewidth *= 2; |
328 |
} |
} |
329 |
|
|
330 |
|
snd_rate = pwfx->nSamplesPerSec; |
331 |
|
|
332 |
info.play.sample_rate = pwfx->nSamplesPerSec; |
info.play.sample_rate = pwfx->nSamplesPerSec; |
333 |
info.play.precision = pwfx->wBitsPerSample; |
info.play.precision = pwfx->wBitsPerSample; |
334 |
info.play.samples = 0; |
info.play.samples = 0; |
335 |
info.play.eof = 0; |
info.play.eof = 0; |
336 |
info.play.error = 0; |
info.play.error = 0; |
|
g_reopened = True; |
|
337 |
|
|
338 |
if (ioctl(g_dsp_fd, AUDIO_SETINFO, &info) == -1) |
info.record.sample_rate = info.play.sample_rate; |
339 |
|
info.record.channels = info.play.channels; |
340 |
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info.record.precision = info.play.precision; |
341 |
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info.record.encoding = info.play.encoding; |
342 |
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info.record.samples = 0; |
343 |
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info.record.error = 0; |
344 |
|
|
345 |
|
if (ioctl(dsp_fd, AUDIO_SETINFO, &info) == -1) |
346 |
{ |
{ |
347 |
perror("AUDIO_SETINFO"); |
perror("AUDIO_SETINFO"); |
348 |
close(g_dsp_fd); |
sun_close(); |
349 |
return False; |
return False; |
350 |
} |
} |
351 |
|
|
352 |
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dsp_configured = True; |
353 |
|
|
354 |
|
if (dsp_in) |
355 |
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sun_resume(); |
356 |
|
|
357 |
return True; |
return True; |
358 |
} |
} |
359 |
|
|
360 |
void |
void |
361 |
wave_out_volume(uint16 left, uint16 right) |
sun_volume(uint16 left, uint16 right) |
362 |
{ |
{ |
363 |
audio_info_t info; |
audio_info_t info; |
364 |
uint balance; |
uint balance; |
382 |
info.play.gain = volume / (65536 / AUDIO_MAX_GAIN); |
info.play.gain = volume / (65536 / AUDIO_MAX_GAIN); |
383 |
info.play.balance = balance; |
info.play.balance = balance; |
384 |
|
|
385 |
if (ioctl(g_dsp_fd, AUDIO_SETINFO, &info) == -1) |
if (ioctl(dsp_fd, AUDIO_SETINFO, &info) == -1) |
386 |
{ |
{ |
387 |
perror("AUDIO_SETINFO"); |
perror("AUDIO_SETINFO"); |
388 |
return; |
return; |
390 |
} |
} |
391 |
|
|
392 |
void |
void |
393 |
wave_out_write(STREAM s, uint16 tick, uint8 index) |
sun_play(void) |
394 |
{ |
{ |
395 |
struct audio_packet *packet = &packet_queue[queue_hi]; |
struct audio_packet *packet; |
396 |
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
ssize_t len; |
397 |
|
STREAM out; |
398 |
|
|
399 |
if (next_hi == queue_lo) |
/* We shouldn't be called if the queue is empty, but still */ |
400 |
|
if (rdpsnd_queue_empty()) |
401 |
|
return; |
402 |
|
|
403 |
|
packet = rdpsnd_queue_current_packet(); |
404 |
|
out = &packet->s; |
405 |
|
|
406 |
|
len = out->end - out->p; |
407 |
|
|
408 |
|
len = write(dsp_fd, out->p, (len > MAX_LEN) ? MAX_LEN : len); |
409 |
|
if (len == -1) |
410 |
{ |
{ |
411 |
error("No space to queue audio packet\n"); |
if (errno != EWOULDBLOCK) |
412 |
|
{ |
413 |
|
if (!dsp_broken) |
414 |
|
perror("RDPSND: write()"); |
415 |
|
dsp_broken = True; |
416 |
|
rdpsnd_queue_next(0); |
417 |
|
} |
418 |
return; |
return; |
419 |
} |
} |
420 |
|
|
421 |
queue_hi = next_hi; |
written_samples += len / (samplewidth * (stereo ? 2 : 1)); |
422 |
|
|
423 |
packet->s = *s; |
dsp_broken = False; |
|
packet->tick = tick; |
|
|
packet->index = index; |
|
|
packet->s.p += 4; |
|
424 |
|
|
425 |
/* we steal the data buffer from s, give it a new one */ |
out->p += len; |
|
s->data = malloc(s->size); |
|
426 |
|
|
427 |
if (!g_dsp_busy) |
if (out->p == out->end) |
428 |
wave_out_play(); |
{ |
429 |
|
audio_info_t info; |
430 |
|
uint_t delay_samples; |
431 |
|
unsigned long delay_us; |
432 |
|
|
433 |
|
if (ioctl(dsp_fd, AUDIO_GETINFO, &info) != -1) |
434 |
|
delay_samples = written_samples - info.play.samples; |
435 |
|
else |
436 |
|
delay_samples = out->size / (samplewidth * (stereo ? 2 : 1)); |
437 |
|
|
438 |
|
delay_us = delay_samples * (1000000 / snd_rate); |
439 |
|
rdpsnd_queue_next(delay_us); |
440 |
|
} |
441 |
} |
} |
442 |
|
|
443 |
void |
void |
444 |
wave_out_play(void) |
sun_record(void) |
445 |
{ |
{ |
446 |
struct audio_packet *packet; |
char buffer[32768]; |
447 |
audio_info_t info; |
int len; |
|
ssize_t len; |
|
|
unsigned int i; |
|
|
uint8 swap; |
|
|
STREAM out; |
|
|
static BOOL swapped = False; |
|
|
static BOOL sentcompletion = True; |
|
|
static uint32 samplecnt = 0; |
|
|
static uint32 numsamples; |
|
448 |
|
|
449 |
while (1) |
len = read(dsp_fd, buffer, sizeof(buffer)); |
450 |
|
if (len == -1) |
451 |
{ |
{ |
452 |
if (g_reopened) |
if (errno != EWOULDBLOCK) |
453 |
{ |
perror("read audio"); |
454 |
/* Device was just (re)openend */ |
return; |
455 |
samplecnt = 0; |
} |
|
swapped = False; |
|
|
sentcompletion = True; |
|
|
g_reopened = False; |
|
|
} |
|
456 |
|
|
457 |
if (queue_lo == queue_hi) |
rdpsnd_record(buffer, len); |
458 |
{ |
} |
|
g_dsp_busy = 0; |
|
|
return; |
|
|
} |
|
459 |
|
|
460 |
packet = &packet_queue[queue_lo]; |
struct audio_driver * |
461 |
out = &packet->s; |
sun_register(char *options) |
462 |
|
{ |
463 |
|
static struct audio_driver sun_driver; |
464 |
|
|
465 |
/* Swap the current packet, but only once */ |
memset(&sun_driver, 0, sizeof(sun_driver)); |
|
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; |
|
|
} |
|
466 |
|
|
467 |
if (sentcompletion) |
sun_driver.name = "sun"; |
468 |
{ |
sun_driver.description = |
469 |
sentcompletion = False; |
"SUN/BSD output driver, default device: " DEFAULTDEVICE " or $AUDIODEV"; |
|
numsamples = (out->end - out->p) / g_samplewidth; |
|
|
} |
|
470 |
|
|
471 |
len = 0; |
sun_driver.add_fds = sun_add_fds; |
472 |
|
sun_driver.check_fds = sun_check_fds; |
473 |
|
|
474 |
if (out->end != out->p) |
sun_driver.wave_out_open = sun_open_out; |
475 |
{ |
sun_driver.wave_out_close = sun_close_out; |
476 |
len = write(g_dsp_fd, out->p, out->end - out->p); |
sun_driver.wave_out_format_supported = sun_format_supported; |
477 |
if (len == -1) |
sun_driver.wave_out_set_format = sun_set_format; |
478 |
{ |
sun_driver.wave_out_volume = sun_volume; |
|
if (errno != EWOULDBLOCK) |
|
|
perror("write audio"); |
|
|
g_dsp_busy = 1; |
|
|
return; |
|
|
} |
|
|
} |
|
479 |
|
|
480 |
out->p += len; |
sun_driver.wave_in_open = sun_open_in; |
481 |
if (out->p == out->end) |
sun_driver.wave_in_close = sun_close_in; |
482 |
|
sun_driver.wave_in_format_supported = sun_format_supported; |
483 |
|
sun_driver.wave_in_set_format = sun_set_format; |
484 |
|
sun_driver.wave_in_volume = NULL; /* FIXME */ |
485 |
|
|
486 |
|
sun_driver.need_byteswap_on_be = 1; |
487 |
|
sun_driver.need_resampling = 0; |
488 |
|
|
489 |
|
if (options) |
490 |
|
{ |
491 |
|
dsp_dev = xstrdup(options); |
492 |
|
} |
493 |
|
else |
494 |
|
{ |
495 |
|
dsp_dev = getenv("AUDIODEV"); |
496 |
|
|
497 |
|
if (dsp_dev == NULL) |
498 |
{ |
{ |
499 |
if (ioctl(g_dsp_fd, AUDIO_GETINFO, &info) == -1) |
dsp_dev = DEFAULTDEVICE; |
|
{ |
|
|
perror("AUDIO_GETINFO"); |
|
|
return; |
|
|
} |
|
|
|
|
|
/* Ack the packet, if we have played at least 70% */ |
|
|
if (info.play.samples >= samplecnt + ((numsamples * 7) / 10)) |
|
|
{ |
|
|
samplecnt += numsamples; |
|
|
rdpsnd_send_completion(packet->tick, packet->index); |
|
|
free(out->data); |
|
|
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
|
|
swapped = False; |
|
|
sentcompletion = True; |
|
|
} |
|
|
else |
|
|
{ |
|
|
g_dsp_busy = 1; |
|
|
return; |
|
|
} |
|
500 |
} |
} |
501 |
} |
} |
502 |
|
|
503 |
|
return &sun_driver; |
504 |
} |
} |