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Copyright (C) Matthew Chapman 2003-2007 |
Copyright (C) Matthew Chapman 2003-2007 |
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Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003 |
Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003 |
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Copyright (C) Michael Gernoth mike@zerfleddert.de 2003-2007 |
Copyright (C) Michael Gernoth mike@zerfleddert.de 2003-2007 |
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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 |
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#endif |
#endif |
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#define DEFAULTDEVICE "/dev/audio" |
#define DEFAULTDEVICE "/dev/audio" |
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#define MAX_LEN 512 |
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static int dsp_fd = -1; |
static int dsp_fd = -1; |
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static RD_BOOL dsp_busy; |
static int dsp_mode; |
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static int dsp_refs; |
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static RD_BOOL g_reopened; |
static RD_BOOL dsp_configured; |
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static short g_samplewidth; |
static RD_BOOL dsp_broken; |
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static RD_BOOL dsp_out; |
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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; |
static char *dsp_dev; |
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static uint_t written_samples; |
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void sun_play(void); |
void sun_play(void); |
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void sun_record(void); |
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void |
void |
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sun_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
sun_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
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if (dsp_fd == -1) |
if (dsp_fd == -1) |
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return; |
return; |
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if (rdpsnd_queue_empty()) |
if (dsp_out && !rdpsnd_queue_empty()) |
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return; |
FD_SET(dsp_fd, wfds); |
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if (dsp_in) |
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FD_SET(dsp_fd, wfds); |
FD_SET(dsp_fd, rfds); |
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if (dsp_fd > *n) |
if (dsp_fd > *n) |
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*n = dsp_fd; |
*n = dsp_fd; |
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} |
} |
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{ |
{ |
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if (FD_ISSET(dsp_fd, wfds)) |
if (FD_ISSET(dsp_fd, wfds)) |
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sun_play(); |
sun_play(); |
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if (FD_ISSET(dsp_fd, rfds)) |
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sun_record(); |
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} |
} |
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RD_BOOL |
RD_BOOL |
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sun_open(void) |
sun_open(int mode) |
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{ |
{ |
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if ((dsp_fd = open(dsp_dev, O_WRONLY | O_NONBLOCK)) == -1) |
audio_info_t info; |
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if (dsp_fd != -1) |
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{ |
{ |
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perror(dsp_dev); |
dsp_refs++; |
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if (dsp_mode == O_RDWR) |
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return True; |
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if (dsp_mode == mode) |
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return True; |
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dsp_refs--; |
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return False; |
return False; |
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} |
} |
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/* Non-blocking so that user interface is responsive */ |
dsp_configured = False; |
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fcntl(dsp_fd, F_SETFL, fcntl(dsp_fd, F_GETFL) | O_NONBLOCK); |
dsp_broken = False; |
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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); |
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if (dsp_fd != -1) |
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{ |
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AUDIO_INITINFO(&info); |
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if ((ioctl(dsp_fd, AUDIO_GETINFO, &info) == -1) |
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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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} |
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} |
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if (dsp_fd == -1) |
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{ |
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dsp_mode = mode; |
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dsp_fd = open(dsp_dev, dsp_mode | O_NONBLOCK); |
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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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} |
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} |
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g_reopened = True; |
dsp_refs++; |
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return True; |
return True; |
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} |
} |
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void |
void |
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sun_close(void) |
sun_close(void) |
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{ |
{ |
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/* Ack all remaining packets */ |
dsp_refs--; |
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while (!rdpsnd_queue_empty()) |
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rdpsnd_queue_next(0); |
if (dsp_refs != 0) |
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return; |
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close(dsp_fd); |
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dsp_fd = -1; |
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} |
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RD_BOOL |
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sun_open_out(void) |
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{ |
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if (!sun_open(O_WRONLY)) |
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return False; |
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dsp_out = True; |
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return True; |
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} |
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void |
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sun_close_out(void) |
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{ |
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#if defined I_FLUSH && defined FLUSHW |
#if defined I_FLUSH && defined FLUSHW |
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/* Flush the audiobuffer */ |
/* Flush the audiobuffer */ |
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ioctl(dsp_fd, I_FLUSH, FLUSHW); |
ioctl(dsp_fd, I_FLUSH, FLUSHW); |
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#if defined AUDIO_FLUSH |
#if defined AUDIO_FLUSH |
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ioctl(dsp_fd, AUDIO_FLUSH, NULL); |
ioctl(dsp_fd, AUDIO_FLUSH, NULL); |
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#endif |
#endif |
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close(dsp_fd); |
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dsp_fd = -1; |
sun_close(); |
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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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dsp_out = False; |
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} |
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RD_BOOL |
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sun_open_in(void) |
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{ |
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if (!sun_open(O_RDONLY)) |
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return False; |
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dsp_in = True; |
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return True; |
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} |
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void |
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sun_close_in(void) |
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{ |
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sun_close(); |
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dsp_in = False; |
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} |
} |
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RD_BOOL |
RD_BOOL |
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ioctl(dsp_fd, AUDIO_DRAIN, 0); |
ioctl(dsp_fd, AUDIO_DRAIN, 0); |
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AUDIO_INITINFO(&info); |
AUDIO_INITINFO(&info); |
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if (dsp_configured) |
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{ |
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if ((pwfx->wBitsPerSample == 8) && (format != AUDIO_ENCODING_LINEAR8)) |
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return False; |
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if ((pwfx->wBitsPerSample == 16) && (format != AUDIO_ENCODING_LINEAR)) |
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return False; |
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if ((pwfx->nChannels == 2) != !!stereo) |
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return False; |
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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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} |
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if (pwfx->wBitsPerSample == 8) |
if (pwfx->wBitsPerSample == 8) |
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{ |
{ |
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info.play.encoding = AUDIO_ENCODING_LINEAR; |
info.play.encoding = AUDIO_ENCODING_LINEAR; |
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} |
} |
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g_samplewidth = pwfx->wBitsPerSample / 8; |
samplewidth = pwfx->wBitsPerSample / 8; |
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if (pwfx->nChannels == 1) |
if (pwfx->nChannels == 1) |
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{ |
{ |
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else if (pwfx->nChannels == 2) |
else if (pwfx->nChannels == 2) |
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{ |
{ |
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info.play.channels = 2; |
info.play.channels = 2; |
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g_samplewidth *= 2; |
samplewidth *= 2; |
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} |
} |
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snd_rate = pwfx->nSamplesPerSec; |
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info.play.sample_rate = pwfx->nSamplesPerSec; |
info.play.sample_rate = pwfx->nSamplesPerSec; |
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info.play.precision = pwfx->wBitsPerSample; |
info.play.precision = pwfx->wBitsPerSample; |
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info.play.samples = 0; |
info.play.samples = 0; |
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info.play.eof = 0; |
info.play.eof = 0; |
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info.play.error = 0; |
info.play.error = 0; |
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g_reopened = True; |
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info.record.sample_rate = info.play.sample_rate; |
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info.record.channels = info.play.channels; |
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info.record.precision = info.play.precision; |
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info.record.encoding = info.play.encoding; |
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info.record.samples = 0; |
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info.record.error = 0; |
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if (ioctl(dsp_fd, AUDIO_SETINFO, &info) == -1) |
if (ioctl(dsp_fd, AUDIO_SETINFO, &info) == -1) |
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{ |
{ |
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return False; |
return False; |
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} |
} |
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dsp_configured = True; |
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return True; |
return True; |
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} |
} |
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sun_play(void) |
sun_play(void) |
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{ |
{ |
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struct audio_packet *packet; |
struct audio_packet *packet; |
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audio_info_t info; |
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ssize_t len; |
ssize_t len; |
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unsigned int i; |
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STREAM out; |
STREAM out; |
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static RD_BOOL sentcompletion = True; |
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static uint32 samplecnt = 0; |
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static uint32 numsamples; |
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while (1) |
/* We shouldn't be called if the queue is empty, but still */ |
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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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len = out->end - out->p; |
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len = write(dsp_fd, out->p, (len > MAX_LEN) ? MAX_LEN : len); |
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if (len == -1) |
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{ |
{ |
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if (g_reopened) |
if (errno != EWOULDBLOCK) |
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{ |
{ |
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/* Device was just (re)openend */ |
if (!dsp_broken) |
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samplecnt = 0; |
perror("RDPSND: write()"); |
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sentcompletion = True; |
dsp_broken = True; |
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g_reopened = False; |
rdpsnd_queue_next(0); |
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} |
} |
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return; |
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} |
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if (rdpsnd_queue_empty()) |
written_samples += len / (samplewidth * (stereo ? 2 : 1)); |
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return; |
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packet = rdpsnd_queue_current_packet(); |
dsp_broken = False; |
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out = &packet->s; |
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if (sentcompletion) |
out->p += len; |
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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; |
if (out->p == out->end) |
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{ |
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audio_info_t info; |
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uint_t delay_samples; |
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unsigned long delay_us; |
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if (ioctl(dsp_fd, AUDIO_GETINFO, &info) != -1) |
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delay_samples = written_samples - info.play.samples; |
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else |
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delay_samples = out->size / (samplewidth * (stereo ? 2 : 1)); |
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if (out->end != out->p) |
delay_us = delay_samples * (1000000 / snd_rate); |
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{ |
rdpsnd_queue_next(delay_us); |
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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; |
void |
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if (out->p == out->end) |
sun_record(void) |
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{ |
{ |
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if (ioctl(dsp_fd, AUDIO_GETINFO, &info) == -1) |
char buffer[32768]; |
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{ |
int len; |
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perror("AUDIO_GETINFO"); |
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return; |
len = read(dsp_fd, buffer, sizeof(buffer)); |
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} |
if (len == -1) |
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{ |
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/* Ack the packet, if we have played at least 70% */ |
if (errno != EWOULDBLOCK) |
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if (info.play.samples >= samplecnt + ((numsamples * 7) / 10)) |
perror("read audio"); |
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{ |
return; |
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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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rdpsnd_record(buffer, len); |
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} |
} |
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struct audio_driver * |
struct audio_driver * |
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sun_driver.add_fds = sun_add_fds; |
sun_driver.add_fds = sun_add_fds; |
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sun_driver.check_fds = sun_check_fds; |
sun_driver.check_fds = sun_check_fds; |
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sun_driver.wave_out_open = sun_open; |
sun_driver.wave_out_open = sun_open_out; |
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sun_driver.wave_out_close = sun_close; |
sun_driver.wave_out_close = sun_close_out; |
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sun_driver.wave_out_format_supported = sun_format_supported; |
sun_driver.wave_out_format_supported = sun_format_supported; |
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sun_driver.wave_out_set_format = sun_set_format; |
sun_driver.wave_out_set_format = sun_set_format; |
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sun_driver.wave_out_volume = sun_volume; |
sun_driver.wave_out_volume = sun_volume; |
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sun_driver.wave_in_open = sun_open_in; |
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sun_driver.wave_in_close = sun_close_in; |
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sun_driver.wave_in_format_supported = sun_format_supported; |
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sun_driver.wave_in_set_format = sun_set_format; |
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sun_driver.wave_in_volume = NULL; /* FIXME */ |
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sun_driver.need_byteswap_on_be = 1; |
sun_driver.need_byteswap_on_be = 1; |
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sun_driver.need_resampling = 0; |
sun_driver.need_resampling = 0; |
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