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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 - Open Sound System |
Sound Channel Process Functions - Open Sound System |
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 2006-2007 Pierre Ossman <ossman@cendio.se> for Cendio AB |
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|
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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 |
29 |
#endif |
#endif |
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|
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#include "rdesktop.h" |
#include "rdesktop.h" |
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#include "rdpsnd.h" |
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#include "rdpsnd_dsp.h" |
34 |
#include <unistd.h> |
#include <unistd.h> |
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#include <fcntl.h> |
#include <fcntl.h> |
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#include <errno.h> |
#include <errno.h> |
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#include <unistd.h> |
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#include <sys/time.h> |
#include <sys/time.h> |
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#include <sys/ioctl.h> |
#include <sys/ioctl.h> |
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#include <sys/soundcard.h> |
#include <sys/soundcard.h> |
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#include <sys/types.h> |
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#include <sys/stat.h> |
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#define DEFAULTDEVICE "/dev/dsp" |
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#define MAX_LEN 512 |
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static int dsp_fd = -1; |
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static int dsp_mode; |
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static int dsp_refs; |
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static BOOL dsp_configured; |
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static BOOL dsp_out; |
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static BOOL dsp_in; |
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static int stereo; |
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static int format; |
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static int snd_rate; |
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static short samplewidth; |
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static char *dsp_dev; |
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static BOOL in_esddsp; |
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/* This is a just a forward declaration */ |
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static struct audio_driver oss_driver; |
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void oss_play(void); |
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void oss_record(void); |
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void |
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oss_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
71 |
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{ |
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if (dsp_fd == -1) |
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return; |
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if (dsp_out && !rdpsnd_queue_empty()) |
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FD_SET(dsp_fd, wfds); |
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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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oss_check_fds(fd_set * rfds, fd_set * wfds) |
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{ |
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if (FD_ISSET(dsp_fd, wfds)) |
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oss_play(); |
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if (FD_ISSET(dsp_fd, rfds)) |
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oss_record(); |
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} |
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static BOOL |
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detect_esddsp(void) |
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{ |
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struct stat s; |
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char *preload; |
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|
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#define MAX_QUEUE 10 |
if (fstat(dsp_fd, &s) == -1) |
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return False; |
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if (S_ISCHR(s.st_mode) || S_ISBLK(s.st_mode)) |
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return False; |
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preload = getenv("LD_PRELOAD"); |
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if (preload == NULL) |
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return False; |
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int g_dsp_fd; |
if (strstr(preload, "esddsp") == NULL) |
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BOOL g_dsp_busy = False; |
return False; |
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static int g_snd_rate; |
|
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static short g_samplewidth; |
return True; |
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static BOOL g_driver_broken = False; |
} |
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static struct audio_packet |
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{ |
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struct stream s; |
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uint16 tick; |
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uint8 index; |
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} packet_queue[MAX_QUEUE]; |
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static unsigned int queue_hi, queue_lo; |
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BOOL |
BOOL |
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wave_out_open(void) |
oss_open(int fallback) |
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{ |
{ |
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char *dsp_dev = getenv("AUDIODEV"); |
int caps; |
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|
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if (dsp_dev == NULL) |
if (dsp_fd != -1) |
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{ |
{ |
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dsp_dev = xstrdup("/dev/dsp"); |
dsp_refs++; |
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if (dsp_mode == O_RDWR) |
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return True; |
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if (dsp_mode == fallback) |
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return True; |
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dsp_refs--; |
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return False; |
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} |
} |
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if ((g_dsp_fd = open(dsp_dev, O_WRONLY | O_NONBLOCK)) == -1) |
dsp_configured = False; |
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dsp_mode = O_RDWR; |
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dsp_fd = open(dsp_dev, O_RDWR | O_NONBLOCK); |
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if (dsp_fd != -1) |
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{ |
{ |
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perror(dsp_dev); |
ioctl(dsp_fd, SNDCTL_DSP_SETDUPLEX, 0); |
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return False; |
|
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if ((ioctl(dsp_fd, SNDCTL_DSP_GETCAPS, &caps) < 0) || !(caps & DSP_CAP_DUPLEX)) |
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{ |
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close(dsp_fd); |
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dsp_fd = -1; |
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} |
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} |
} |
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|
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/* Non-blocking so that user interface is responsive */ |
if (dsp_fd == -1) |
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fcntl(g_dsp_fd, F_SETFL, fcntl(g_dsp_fd, F_GETFL) | O_NONBLOCK); |
{ |
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dsp_mode = fallback; |
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dsp_fd = open(dsp_dev, dsp_mode | O_NONBLOCK); |
153 |
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if (dsp_fd == -1) |
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{ |
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perror(dsp_dev); |
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return False; |
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} |
158 |
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} |
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dsp_refs++; |
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in_esddsp = detect_esddsp(); |
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return True; |
return True; |
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} |
} |
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|
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void |
void |
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wave_out_close(void) |
oss_close(void) |
169 |
{ |
{ |
170 |
close(g_dsp_fd); |
dsp_refs--; |
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|
172 |
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if (dsp_refs != 0) |
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return; |
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|
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close(dsp_fd); |
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dsp_fd = -1; |
177 |
} |
} |
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|
179 |
BOOL |
BOOL |
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wave_out_format_supported(WAVEFORMATEX * pwfx) |
oss_open_out(void) |
181 |
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{ |
182 |
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if (!oss_open(O_WRONLY)) |
183 |
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return False; |
184 |
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dsp_out = True; |
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return True; |
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} |
189 |
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void |
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oss_close_out(void) |
192 |
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{ |
193 |
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oss_close(); |
194 |
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|
195 |
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/* Ack all remaining packets */ |
196 |
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while (!rdpsnd_queue_empty()) |
197 |
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rdpsnd_queue_next(0); |
198 |
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|
199 |
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dsp_out = False; |
200 |
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} |
201 |
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BOOL |
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oss_open_in(void) |
204 |
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{ |
205 |
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if (!oss_open(O_RDONLY)) |
206 |
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return False; |
207 |
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208 |
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dsp_in = True; |
209 |
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return True; |
211 |
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} |
212 |
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void |
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oss_close_in(void) |
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{ |
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oss_close(); |
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dsp_in = False; |
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} |
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BOOL |
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oss_format_supported(RD_WAVEFORMATEX * pwfx) |
223 |
{ |
{ |
224 |
if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
225 |
return False; |
return False; |
232 |
} |
} |
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|
234 |
BOOL |
BOOL |
235 |
wave_out_set_format(WAVEFORMATEX * pwfx) |
oss_set_format(RD_WAVEFORMATEX * pwfx) |
236 |
{ |
{ |
237 |
int stereo, format, fragments; |
int fragments; |
238 |
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static BOOL driver_broken = False; |
239 |
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|
240 |
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if (dsp_configured) |
241 |
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{ |
242 |
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if ((pwfx->wBitsPerSample == 8) && (format != AFMT_U8)) |
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return False; |
244 |
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if ((pwfx->wBitsPerSample == 16) && (format != AFMT_S16_LE)) |
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return False; |
246 |
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247 |
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if ((pwfx->nChannels == 2) != !!stereo) |
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return False; |
249 |
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|
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if (pwfx->nSamplesPerSec != snd_rate) |
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return False; |
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return True; |
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} |
255 |
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|
256 |
ioctl(g_dsp_fd, SNDCTL_DSP_RESET, NULL); |
ioctl(dsp_fd, SNDCTL_DSP_RESET, NULL); |
257 |
ioctl(g_dsp_fd, SNDCTL_DSP_SYNC, NULL); |
ioctl(dsp_fd, SNDCTL_DSP_SYNC, NULL); |
258 |
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|
259 |
if (pwfx->wBitsPerSample == 8) |
if (pwfx->wBitsPerSample == 8) |
260 |
format = AFMT_U8; |
format = AFMT_U8; |
261 |
else if (pwfx->wBitsPerSample == 16) |
else if (pwfx->wBitsPerSample == 16) |
262 |
format = AFMT_S16_LE; |
format = AFMT_S16_LE; |
263 |
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|
264 |
g_samplewidth = pwfx->wBitsPerSample / 8; |
samplewidth = pwfx->wBitsPerSample / 8; |
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|
266 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SETFMT, &format) == -1) |
if (ioctl(dsp_fd, SNDCTL_DSP_SETFMT, &format) == -1) |
267 |
{ |
{ |
268 |
perror("SNDCTL_DSP_SETFMT"); |
perror("SNDCTL_DSP_SETFMT"); |
269 |
close(g_dsp_fd); |
oss_close(); |
270 |
return False; |
return False; |
271 |
} |
} |
272 |
|
|
273 |
if (pwfx->nChannels == 2) |
if (pwfx->nChannels == 2) |
274 |
{ |
{ |
275 |
stereo = 1; |
stereo = 1; |
276 |
g_samplewidth *= 2; |
samplewidth *= 2; |
277 |
} |
} |
278 |
else |
else |
279 |
{ |
{ |
280 |
stereo = 0; |
stereo = 0; |
281 |
} |
} |
282 |
|
|
283 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_STEREO, &stereo) == -1) |
if (ioctl(dsp_fd, SNDCTL_DSP_STEREO, &stereo) == -1) |
284 |
{ |
{ |
285 |
perror("SNDCTL_DSP_CHANNELS"); |
perror("SNDCTL_DSP_CHANNELS"); |
286 |
close(g_dsp_fd); |
oss_close(); |
287 |
return False; |
return False; |
288 |
} |
} |
289 |
|
|
290 |
g_snd_rate = pwfx->nSamplesPerSec; |
oss_driver.need_resampling = 0; |
291 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_SPEED, &g_snd_rate) == -1) |
snd_rate = pwfx->nSamplesPerSec; |
292 |
|
if (ioctl(dsp_fd, SNDCTL_DSP_SPEED, &snd_rate) == -1) |
293 |
{ |
{ |
294 |
perror("SNDCTL_DSP_SPEED"); |
int rates[] = { 44100, 48000, 0 }; |
295 |
close(g_dsp_fd); |
int *prates = rates; |
296 |
return False; |
|
297 |
|
while (*prates != 0) |
298 |
|
{ |
299 |
|
if ((pwfx->nSamplesPerSec != *prates) |
300 |
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&& (ioctl(dsp_fd, SNDCTL_DSP_SPEED, prates) != -1)) |
301 |
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{ |
302 |
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oss_driver.need_resampling = 1; |
303 |
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snd_rate = *prates; |
304 |
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if (rdpsnd_dsp_resample_set |
305 |
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(snd_rate, pwfx->wBitsPerSample, pwfx->nChannels) == False) |
306 |
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{ |
307 |
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error("rdpsnd_dsp_resample_set failed"); |
308 |
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oss_close(); |
309 |
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return False; |
310 |
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} |
311 |
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|
312 |
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break; |
313 |
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} |
314 |
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prates++; |
315 |
|
} |
316 |
|
|
317 |
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if (*prates == 0) |
318 |
|
{ |
319 |
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perror("SNDCTL_DSP_SPEED"); |
320 |
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oss_close(); |
321 |
|
return False; |
322 |
|
} |
323 |
} |
} |
324 |
|
|
325 |
/* try to get 7 fragments of 2^12 bytes size */ |
/* try to get 12 fragments of 2^12 bytes size */ |
326 |
fragments = (7 << 16) + 12; |
fragments = (12 << 16) + 12; |
327 |
ioctl(g_dsp_fd, SNDCTL_DSP_SETFRAGMENT, &fragments); |
ioctl(dsp_fd, SNDCTL_DSP_SETFRAGMENT, &fragments); |
328 |
|
|
329 |
if (!g_driver_broken) |
if (!driver_broken) |
330 |
{ |
{ |
331 |
audio_buf_info info; |
audio_buf_info info; |
332 |
|
|
333 |
memset(&info, 0, sizeof(info)); |
memset(&info, 0, sizeof(info)); |
334 |
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) |
if (ioctl(dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) |
335 |
{ |
{ |
336 |
perror("SNDCTL_DSP_GETOSPACE"); |
perror("SNDCTL_DSP_GETOSPACE"); |
337 |
close(g_dsp_fd); |
oss_close(); |
338 |
return False; |
return False; |
339 |
} |
} |
340 |
|
|
343 |
fprintf(stderr, |
fprintf(stderr, |
344 |
"Broken OSS-driver detected: fragments: %d, fragstotal: %d, fragsize: %d\n", |
"Broken OSS-driver detected: fragments: %d, fragstotal: %d, fragsize: %d\n", |
345 |
info.fragments, info.fragstotal, info.fragsize); |
info.fragments, info.fragstotal, info.fragsize); |
346 |
g_driver_broken = True; |
driver_broken = True; |
347 |
} |
} |
348 |
} |
} |
349 |
|
|
350 |
|
dsp_configured = True; |
351 |
|
|
352 |
return True; |
return True; |
353 |
} |
} |
354 |
|
|
355 |
void |
void |
356 |
wave_out_volume(uint16 left, uint16 right) |
oss_volume(uint16 left, uint16 right) |
357 |
{ |
{ |
|
static BOOL use_dev_mixer = False; |
|
358 |
uint32 volume; |
uint32 volume; |
|
int fd_mix = -1; |
|
359 |
|
|
360 |
volume = left / (65536 / 100); |
volume = left / (65536 / 100); |
361 |
volume |= right / (65536 / 100) << 8; |
volume |= right / (65536 / 100) << 8; |
362 |
|
|
363 |
if (use_dev_mixer) |
if (ioctl(dsp_fd, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1) |
364 |
{ |
{ |
365 |
if ((fd_mix = open("/dev/mixer", O_RDWR | O_NONBLOCK)) == -1) |
warning("hardware volume control unavailable, falling back to software volume control!\n"); |
366 |
{ |
oss_driver.wave_out_volume = rdpsnd_dsp_softvol_set; |
367 |
perror("open /dev/mixer"); |
rdpsnd_dsp_softvol_set(left, right); |
|
return; |
|
|
} |
|
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|
|
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if (ioctl(fd_mix, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1) |
|
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{ |
|
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perror("MIXER_WRITE(SOUND_MIXER_PCM)"); |
|
|
return; |
|
|
} |
|
|
|
|
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close(fd_mix); |
|
|
} |
|
|
|
|
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if (ioctl(g_dsp_fd, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1) |
|
|
{ |
|
|
perror("MIXER_WRITE(SOUND_MIXER_PCM)"); |
|
|
use_dev_mixer = True; |
|
368 |
return; |
return; |
369 |
} |
} |
370 |
} |
} |
371 |
|
|
372 |
void |
void |
373 |
wave_out_write(STREAM s, uint16 tick, uint8 index) |
oss_play(void) |
374 |
{ |
{ |
375 |
struct audio_packet *packet = &packet_queue[queue_hi]; |
struct audio_packet *packet; |
376 |
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
ssize_t len; |
377 |
|
STREAM out; |
378 |
|
|
379 |
|
/* We shouldn't be called if the queue is empty, but still */ |
380 |
|
if (rdpsnd_queue_empty()) |
381 |
|
return; |
382 |
|
|
383 |
|
packet = rdpsnd_queue_current_packet(); |
384 |
|
out = &packet->s; |
385 |
|
|
386 |
if (next_hi == queue_lo) |
len = out->end - out->p; |
387 |
|
|
388 |
|
len = write(dsp_fd, out->p, (len > MAX_LEN) ? MAX_LEN : len); |
389 |
|
if (len == -1) |
390 |
{ |
{ |
391 |
error("No space to queue audio packet\n"); |
if (errno != EWOULDBLOCK) |
392 |
|
perror("write audio"); |
393 |
return; |
return; |
394 |
} |
} |
395 |
|
|
396 |
queue_hi = next_hi; |
out->p += len; |
397 |
|
|
398 |
packet->s = *s; |
if (out->p == out->end) |
399 |
packet->tick = tick; |
{ |
400 |
packet->index = index; |
int delay_bytes; |
401 |
packet->s.p += 4; |
unsigned long delay_us; |
402 |
|
audio_buf_info info; |
403 |
|
|
404 |
/* we steal the data buffer from s, give it a new one */ |
if (in_esddsp) |
405 |
s->data = (uint8 *) malloc(s->size); |
{ |
406 |
|
/* EsounD has no way of querying buffer status, so we have to |
407 |
|
* go with a fixed size. */ |
408 |
|
delay_bytes = out->size; |
409 |
|
} |
410 |
|
else |
411 |
|
{ |
412 |
|
#ifdef SNDCTL_DSP_GETODELAY |
413 |
|
delay_bytes = 0; |
414 |
|
if (ioctl(dsp_fd, SNDCTL_DSP_GETODELAY, &delay_bytes) == -1) |
415 |
|
delay_bytes = -1; |
416 |
|
#else |
417 |
|
delay_bytes = -1; |
418 |
|
#endif |
419 |
|
|
420 |
|
if (delay_bytes == -1) |
421 |
|
{ |
422 |
|
if (ioctl(dsp_fd, SNDCTL_DSP_GETOSPACE, &info) != -1) |
423 |
|
delay_bytes = info.fragstotal * info.fragsize - info.bytes; |
424 |
|
else |
425 |
|
delay_bytes = out->size; |
426 |
|
} |
427 |
|
} |
428 |
|
|
429 |
if (!g_dsp_busy) |
delay_us = delay_bytes * (1000000 / (samplewidth * snd_rate)); |
430 |
wave_out_play(); |
rdpsnd_queue_next(delay_us); |
431 |
|
} |
432 |
} |
} |
433 |
|
|
434 |
void |
void |
435 |
wave_out_play(void) |
oss_record(void) |
436 |
{ |
{ |
437 |
struct audio_packet *packet; |
char buffer[32768]; |
438 |
ssize_t len; |
int len; |
|
STREAM out; |
|
|
static long startedat_us; |
|
|
static long startedat_s; |
|
|
static BOOL started = False; |
|
|
struct timeval tv; |
|
|
audio_buf_info info; |
|
439 |
|
|
440 |
while (1) |
len = read(dsp_fd, buffer, sizeof(buffer)); |
441 |
|
if (len == -1) |
442 |
{ |
{ |
443 |
if (queue_lo == queue_hi) |
if (errno != EWOULDBLOCK) |
444 |
{ |
perror("read audio"); |
445 |
g_dsp_busy = 0; |
return; |
446 |
return; |
} |
|
} |
|
447 |
|
|
448 |
packet = &packet_queue[queue_lo]; |
rdpsnd_record(buffer, len); |
449 |
out = &packet->s; |
} |
450 |
|
|
451 |
if (!started) |
struct audio_driver * |
452 |
{ |
oss_register(char *options) |
453 |
gettimeofday(&tv, NULL); |
{ |
454 |
startedat_us = tv.tv_usec; |
memset(&oss_driver, 0, sizeof(oss_driver)); |
|
startedat_s = tv.tv_sec; |
|
|
started = True; |
|
|
} |
|
455 |
|
|
456 |
len = out->end - out->p; |
oss_driver.name = "oss"; |
457 |
|
oss_driver.description = |
458 |
|
"OSS output driver, default device: " DEFAULTDEVICE " or $AUDIODEV"; |
459 |
|
|
460 |
if (!g_driver_broken) |
oss_driver.add_fds = oss_add_fds; |
461 |
{ |
oss_driver.check_fds = oss_check_fds; |
|
memset(&info, 0, sizeof(info)); |
|
|
if (ioctl(g_dsp_fd, SNDCTL_DSP_GETOSPACE, &info) == -1) |
|
|
{ |
|
|
perror("SNDCTL_DSP_GETOSPACE"); |
|
|
return; |
|
|
} |
|
462 |
|
|
463 |
if (info.fragments == 0) |
oss_driver.wave_out_open = oss_open_out; |
464 |
{ |
oss_driver.wave_out_close = oss_close_out; |
465 |
g_dsp_busy = 1; |
oss_driver.wave_out_format_supported = oss_format_supported; |
466 |
return; |
oss_driver.wave_out_set_format = oss_set_format; |
467 |
} |
oss_driver.wave_out_volume = oss_volume; |
468 |
|
|
469 |
if (info.fragments * info.fragsize < len |
oss_driver.wave_in_open = oss_open_in; |
470 |
&& info.fragments * info.fragsize > 0) |
oss_driver.wave_in_close = oss_close_in; |
471 |
{ |
oss_driver.wave_in_format_supported = oss_format_supported; |
472 |
len = info.fragments * info.fragsize; |
oss_driver.wave_in_set_format = oss_set_format; |
473 |
} |
oss_driver.wave_in_volume = NULL; /* FIXME */ |
|
} |
|
474 |
|
|
475 |
|
oss_driver.need_byteswap_on_be = 0; |
476 |
|
oss_driver.need_resampling = 0; |
477 |
|
|
478 |
len = write(g_dsp_fd, out->p, len); |
if (options) |
479 |
if (len == -1) |
{ |
480 |
{ |
dsp_dev = xstrdup(options); |
481 |
if (errno != EWOULDBLOCK) |
} |
482 |
perror("write audio"); |
else |
483 |
g_dsp_busy = 1; |
{ |
484 |
return; |
dsp_dev = getenv("AUDIODEV"); |
|
} |
|
485 |
|
|
486 |
out->p += len; |
if (dsp_dev == NULL) |
|
if (out->p == out->end) |
|
487 |
{ |
{ |
488 |
long long duration; |
dsp_dev = DEFAULTDEVICE; |
|
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); |
|
|
|
|
|
if (elapsed >= (duration * 85) / 100) |
|
|
{ |
|
|
rdpsnd_send_completion(packet->tick, packet->index); |
|
|
free(out->data); |
|
|
queue_lo = (queue_lo + 1) % MAX_QUEUE; |
|
|
started = False; |
|
|
} |
|
|
else |
|
|
{ |
|
|
g_dsp_busy = 1; |
|
|
return; |
|
|
} |
|
489 |
} |
} |
490 |
} |
} |
491 |
|
|
492 |
|
return &oss_driver; |
493 |
} |
} |