f0c0188404
variables and reduce the memory leakage. git-svn-id: svn://svn.code.sf.net/p/rdesktop/code/trunk/rdesktop@1355 423420c4-83ab-492f-b58f-81f9feb106b5
306 lines
5.9 KiB
C
306 lines
5.9 KiB
C
/* -*- c-basic-offset: 8 -*-
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rdesktop: A Remote Desktop Protocol client.
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Sound Channel Process Functions - Sun
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Copyright (C) Matthew Chapman 2003
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Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003
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Copyright (C) Michael Gernoth mike@zerfleddert.de 2003-2006
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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
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "rdesktop.h"
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#include "rdpsnd.h"
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <sys/ioctl.h>
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#include <sys/audioio.h>
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#if (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
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#include <stropts.h>
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#endif
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#define DEFAULTDEVICE "/dev/audio"
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static int dsp_fd = -1;
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static BOOL dsp_busy;
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static BOOL g_reopened;
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static short g_samplewidth;
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static char *dsp_dev;
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void sun_play(void);
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void
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sun_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv)
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{
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if (dsp_fd == -1)
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return;
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if (rdpsnd_queue_empty())
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return;
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FD_SET(dsp_fd, wfds);
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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)
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{
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if (FD_ISSET(dsp_fd, wfds))
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sun_play();
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}
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BOOL
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sun_open(void)
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{
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if ((dsp_fd = open(dsp_dev, O_WRONLY | O_NONBLOCK)) == -1)
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{
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perror(dsp_dev);
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return False;
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}
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/* Non-blocking so that user interface is responsive */
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fcntl(dsp_fd, F_SETFL, fcntl(dsp_fd, F_GETFL) | O_NONBLOCK);
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g_reopened = True;
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return True;
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}
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void
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sun_close(void)
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{
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/* Ack all remaining packets */
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while (!rdpsnd_queue_empty())
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rdpsnd_queue_next(0);
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#if defined I_FLUSH && defined FLUSHW
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/* Flush the audiobuffer */
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ioctl(dsp_fd, I_FLUSH, FLUSHW);
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#endif
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#if defined AUDIO_FLUSH
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ioctl(dsp_fd, AUDIO_FLUSH, NULL);
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#endif
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close(dsp_fd);
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dsp_fd = -1;
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}
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BOOL
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sun_format_supported(WAVEFORMATEX * pwfx)
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{
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if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
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return False;
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if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
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return False;
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if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
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return False;
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return True;
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}
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BOOL
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sun_set_format(WAVEFORMATEX * pwfx)
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{
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audio_info_t info;
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ioctl(dsp_fd, AUDIO_DRAIN, 0);
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AUDIO_INITINFO(&info);
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if (pwfx->wBitsPerSample == 8)
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{
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info.play.encoding = AUDIO_ENCODING_LINEAR8;
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}
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else if (pwfx->wBitsPerSample == 16)
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{
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info.play.encoding = AUDIO_ENCODING_LINEAR;
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}
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g_samplewidth = pwfx->wBitsPerSample / 8;
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if (pwfx->nChannels == 1)
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{
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info.play.channels = 1;
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}
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else if (pwfx->nChannels == 2)
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{
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info.play.channels = 2;
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g_samplewidth *= 2;
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}
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info.play.sample_rate = pwfx->nSamplesPerSec;
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info.play.precision = pwfx->wBitsPerSample;
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info.play.samples = 0;
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info.play.eof = 0;
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info.play.error = 0;
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g_reopened = True;
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if (ioctl(dsp_fd, AUDIO_SETINFO, &info) == -1)
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{
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perror("AUDIO_SETINFO");
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sun_close();
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return False;
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}
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return True;
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}
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void
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sun_volume(uint16 left, uint16 right)
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{
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audio_info_t info;
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uint balance;
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uint volume;
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AUDIO_INITINFO(&info);
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volume = (left > right) ? left : right;
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if (volume / AUDIO_MID_BALANCE != 0)
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{
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balance =
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AUDIO_MID_BALANCE - (left / (volume / AUDIO_MID_BALANCE)) +
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(right / (volume / AUDIO_MID_BALANCE));
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}
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else
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{
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balance = AUDIO_MID_BALANCE;
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}
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info.play.gain = volume / (65536 / AUDIO_MAX_GAIN);
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info.play.balance = balance;
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if (ioctl(dsp_fd, AUDIO_SETINFO, &info) == -1)
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{
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perror("AUDIO_SETINFO");
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return;
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}
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}
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void
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sun_play(void)
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{
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struct audio_packet *packet;
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audio_info_t info;
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ssize_t len;
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unsigned int i;
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STREAM out;
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static BOOL sentcompletion = True;
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static uint32 samplecnt = 0;
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static uint32 numsamples;
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while (1)
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{
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if (g_reopened)
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{
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/* Device was just (re)openend */
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samplecnt = 0;
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sentcompletion = True;
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g_reopened = False;
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}
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if (rdpsnd_queue_empty())
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return;
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packet = rdpsnd_queue_current_packet();
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out = &packet->s;
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if (sentcompletion)
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{
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sentcompletion = False;
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numsamples = (out->end - out->p) / g_samplewidth;
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}
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len = 0;
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if (out->end != out->p)
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{
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len = write(dsp_fd, out->p, out->end - out->p);
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if (len == -1)
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{
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if (errno != EWOULDBLOCK)
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perror("write audio");
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return;
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}
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}
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out->p += len;
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if (out->p == out->end)
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{
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if (ioctl(dsp_fd, AUDIO_GETINFO, &info) == -1)
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{
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perror("AUDIO_GETINFO");
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return;
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}
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/* Ack the packet, if we have played at least 70% */
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if (info.play.samples >= samplecnt + ((numsamples * 7) / 10))
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{
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samplecnt += numsamples;
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/* We need to add 50 to tell windows that time has passed while
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* playing this packet */
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rdpsnd_queue_next(50);
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sentcompletion = True;
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}
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else
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{
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return;
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}
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}
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}
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}
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struct audio_driver *
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sun_register(char *options)
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{
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static struct audio_driver sun_driver;
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memset(&sun_driver, 0, sizeof(sun_driver));
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sun_driver.name = "sun";
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sun_driver.description =
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"SUN/BSD output driver, default device: " DEFAULTDEVICE " or $AUDIODEV";
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sun_driver.add_fds = sun_add_fds;
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sun_driver.check_fds = sun_check_fds;
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sun_driver.wave_out_open = sun_open;
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sun_driver.wave_out_close = sun_close;
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sun_driver.wave_out_format_supported = sun_format_supported;
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sun_driver.wave_out_set_format = sun_set_format;
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sun_driver.wave_out_volume = sun_volume;
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sun_driver.need_byteswap_on_be = 1;
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sun_driver.need_resampling = 0;
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if (options)
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{
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dsp_dev = xstrdup(options);
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}
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else
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{
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dsp_dev = getenv("AUDIODEV");
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if (dsp_dev == NULL)
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{
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dsp_dev = DEFAULTDEVICE;
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}
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}
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return &sun_driver;
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}
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