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/* |
/* -*- c-basic-offset: 8 -*- |
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rdesktop: A Remote Desktop Protocol client. |
rdesktop: A Remote Desktop Protocol client. |
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Sound Channel Process Functions - SGI/IRIX |
Sound Channel Process Functions - SGI/IRIX |
4 |
Copyright (C) Matthew Chapman 2003 |
Copyright (C) Matthew Chapman 2003-2008 |
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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) Jeremy Meng voidfoo@cwazy.co.uk 2004 |
Copyright (C) Jeremy Meng void.foo@gmail.com 2004, 2005 |
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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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#include <errno.h> |
#include <errno.h> |
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#include <dmedia/audio.h> |
#include <dmedia/audio.h> |
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|
|
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#define IRIX_DEBUG 1 |
/* #define IRIX_DEBUG 1 */ |
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|
|
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#define IRIX_MAX_VOL 65535 |
#define IRIX_MAX_VOL 65535 |
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#define MAX_QUEUE 10 |
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int g_dsp_fd; |
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ALconfig audioconfig; |
ALconfig audioconfig; |
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ALport output_port; |
ALport output_port; |
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BOOL g_dsp_busy = False; |
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static BOOL g_swapaudio; |
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static int g_snd_rate; |
static int g_snd_rate; |
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static BOOL g_swapaudio; |
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static int width = AL_SAMPLE_16; |
static int width = AL_SAMPLE_16; |
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static char *sgi_output_device = NULL; |
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double min_volume, max_volume, volume_range; |
double min_volume, max_volume, volume_range; |
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int resource, maxFillable; |
int resource, maxFillable; |
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int combinedFrameSize; |
int combinedFrameSize; |
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static struct audio_packet |
void sgi_play(void); |
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void |
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sgi_add_fds(int *n, fd_set * rfds, fd_set * wfds, struct timeval *tv) |
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{ |
{ |
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struct stream s; |
/* We need to be called rather often... */ |
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uint16 tick; |
if (output_port != (ALport) 0 && !rdpsnd_queue_empty()) |
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uint8 index; |
FD_SET(0, wfds); |
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} packet_queue[MAX_QUEUE]; |
} |
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static unsigned int queue_hi, queue_lo; |
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BOOL |
void |
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wave_out_open(void) |
sgi_check_fds(fd_set * rfds, fd_set * wfds) |
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{ |
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if (output_port == (ALport) 0) |
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return; |
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if (!rdpsnd_queue_empty()) |
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sgi_play(); |
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} |
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RD_BOOL |
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sgi_open(void) |
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{ |
{ |
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ALparamInfo pinfo; |
ALparamInfo pinfo; |
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static int warned = 0; |
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#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
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fprintf(stderr, "wave_out_open: begin\n"); |
fprintf(stderr, "sgi_open: begin\n"); |
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#endif |
#endif |
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if (!warned && sgi_output_device) |
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{ |
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warning("device-options not supported for libao-driver\n"); |
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warned = 1; |
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} |
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if (alGetParamInfo(AL_DEFAULT_OUTPUT, AL_GAIN, &pinfo) < 0) |
if (alGetParamInfo(AL_DEFAULT_OUTPUT, AL_GAIN, &pinfo) < 0) |
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{ |
{ |
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fprintf(stderr, "wave_out_open: alGetParamInfo failed: %s\n", |
fprintf(stderr, "sgi_open: alGetParamInfo failed: %s\n", |
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alGetErrorString(oserror())); |
alGetErrorString(oserror())); |
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} |
} |
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min_volume = alFixedToDouble(pinfo.min.ll); |
min_volume = alFixedToDouble(pinfo.min.ll); |
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max_volume = alFixedToDouble(pinfo.max.ll); |
max_volume = alFixedToDouble(pinfo.max.ll); |
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volume_range = (max_volume - min_volume); |
volume_range = (max_volume - min_volume); |
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#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
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fprintf(stderr, "wave_out_open: minvol = %lf, maxvol= %lf, range = %lf.\n", |
fprintf(stderr, "sgi_open: minvol = %lf, maxvol= %lf, range = %lf.\n", |
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min_volume, max_volume, volume_range); |
min_volume, max_volume, volume_range); |
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#endif |
#endif |
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queue_lo = queue_hi = 0; |
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audioconfig = alNewConfig(); |
audioconfig = alNewConfig(); |
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if (audioconfig < 0) |
if (audioconfig == (ALconfig) 0) |
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{ |
{ |
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fprintf(stderr, "wave_out_open: alNewConfig failed: %s\n", |
fprintf(stderr, "sgi_open: alNewConfig failed: %s\n", alGetErrorString(oserror())); |
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alGetErrorString(oserror())); |
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return False; |
return False; |
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} |
} |
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output_port = alOpenPort("rdpsnd", "w", 0); |
output_port = alOpenPort("rdpsnd", "w", 0); |
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if (output_port == (ALport) 0) |
if (output_port == (ALport) 0) |
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{ |
{ |
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fprintf(stderr, "wave_out_open: alOpenPort failed: %s\n", |
fprintf(stderr, "sgi_open: alOpenPort failed: %s\n", alGetErrorString(oserror())); |
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alGetErrorString(oserror())); |
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return False; |
return False; |
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} |
} |
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#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
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fprintf(stderr, "wave_out_open: returning\n"); |
fprintf(stderr, "sgi_open: returning\n"); |
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#endif |
#endif |
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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) |
sgi_close(void) |
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{ |
{ |
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/* Ack all remaining packets */ |
/* Ack all remaining packets */ |
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#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
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fprintf(stderr, "wave_out_close: begin\n"); |
fprintf(stderr, "sgi_close: begin\n"); |
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#endif |
#endif |
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|
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while (queue_lo != queue_hi) |
while (!rdpsnd_queue_empty()) |
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{ |
rdpsnd_queue_next(0); |
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rdpsnd_send_completion(packet_queue[queue_lo].tick, packet_queue[queue_lo].index); |
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free(packet_queue[queue_lo].s.data); |
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queue_lo = (queue_lo + 1) % MAX_QUEUE; |
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} |
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alDiscardFrames(output_port, 0); |
alDiscardFrames(output_port, 0); |
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alClosePort(output_port); |
alClosePort(output_port); |
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output_port = (ALport) 0; |
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alFreeConfig(audioconfig); |
alFreeConfig(audioconfig); |
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#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
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fprintf(stderr, "wave_out_close: returning\n"); |
fprintf(stderr, "sgi_close: returning\n"); |
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#endif |
#endif |
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} |
} |
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|
|
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BOOL |
RD_BOOL |
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wave_out_format_supported(WAVEFORMATEX * pwfx) |
sgi_format_supported(RD_WAVEFORMATEX * pwfx) |
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{ |
{ |
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if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
if (pwfx->wFormatTag != WAVE_FORMAT_PCM) |
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return False; |
return False; |
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return True; |
return True; |
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} |
} |
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|
|
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BOOL |
RD_BOOL |
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wave_out_set_format(WAVEFORMATEX * pwfx) |
sgi_set_format(RD_WAVEFORMATEX * pwfx) |
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{ |
{ |
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int channels; |
int channels; |
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int frameSize, channelCount; |
int frameSize, channelCount; |
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ALpv params; |
ALpv params; |
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|
|
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#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
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fprintf(stderr, "wave_out_set_format: init...\n"); |
fprintf(stderr, "sgi_set_format: init...\n"); |
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#endif |
#endif |
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g_swapaudio = False; |
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if (pwfx->wBitsPerSample == 8) |
if (pwfx->wBitsPerSample == 8) |
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width = AL_SAMPLE_8; |
width = AL_SAMPLE_8; |
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else if (pwfx->wBitsPerSample == 16) |
else if (pwfx->wBitsPerSample == 16) |
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{ |
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width = AL_SAMPLE_16; |
width = AL_SAMPLE_16; |
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/* Do we need to swap the 16bit values? (Are we BigEndian) */ |
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#if (defined(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 |
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} |
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/* Limited support to configure an opened audio port in IRIX The |
/* Limited support to configure an opened audio port in IRIX. The |
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number of channels is a static setting and can not be changed after |
number of channels is a static setting and can not be changed after |
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a port is opened. So if the number of channels remains the same, we |
a port is opened. So if the number of channels remains the same, we |
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can configure other settings Otherwise we have to reopen the audio |
can configure other settings; otherwise we have to reopen the audio |
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port, using same config. */ |
port, using same config. */ |
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|
|
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channels = pwfx->nChannels; |
channels = pwfx->nChannels; |
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g_snd_rate = pwfx->nSamplesPerSec; |
g_snd_rate = pwfx->nSamplesPerSec; |
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|
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alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP); |
alSetSampFmt(audioconfig, AL_SAMPFMT_TWOSCOMP); |
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alSetWidth(audioconfig, width); |
alSetWidth(audioconfig, width); |
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if ( channels != alGetChannels(audioconfig) ) |
if (channels != alGetChannels(audioconfig)) |
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{ |
{ |
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alClosePort(output_port); |
alClosePort(output_port); |
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alSetChannels(audioconfig, channels); |
alSetChannels(audioconfig, channels); |
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if (output_port == (ALport) 0) |
if (output_port == (ALport) 0) |
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{ |
{ |
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fprintf(stderr, "wave_out_set_format: alOpenPort failed: %s\n", |
fprintf(stderr, "sgi_set_format: alOpenPort failed: %s\n", |
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alGetErrorString(oserror())); |
alGetErrorString(oserror())); |
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return False; |
return False; |
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} |
} |
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if (frameSize == 0 || channelCount == 0) |
if (frameSize == 0 || channelCount == 0) |
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{ |
{ |
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fprintf(stderr, "wave_out_set_format: bad frameSize or channelCount\n"); |
fprintf(stderr, "sgi_set_format: bad frameSize or channelCount\n"); |
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return False; |
return False; |
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} |
} |
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combinedFrameSize = frameSize * channelCount; |
combinedFrameSize = frameSize * channelCount; |
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} |
} |
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#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
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fprintf(stderr, "wave_out_set_format: returning...\n"); |
fprintf(stderr, "sgi_set_format: returning...\n"); |
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#endif |
#endif |
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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_volume(uint16 left, uint16 right) |
sgi_volume(uint16 left, uint16 right) |
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{ |
{ |
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double gainleft, gainright; |
double gainleft, gainright; |
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ALpv pv[1]; |
ALpv pv[1]; |
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ALfixed gain[8]; |
ALfixed gain[8]; |
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|
|
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#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
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fprintf(stderr, "wave_out_volume: begin\n"); |
fprintf(stderr, "sgi_volume: begin\n"); |
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fprintf(stderr, "left='%d', right='%d'\n", left, right); |
fprintf(stderr, "left='%d', right='%d'\n", left, right); |
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#endif |
#endif |
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|
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pv[0].sizeIn = 8; |
pv[0].sizeIn = 8; |
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if (alSetParams(AL_DEFAULT_OUTPUT, pv, 1) < 0) |
if (alSetParams(AL_DEFAULT_OUTPUT, pv, 1) < 0) |
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{ |
{ |
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fprintf(stderr, "wave_out_volume: alSetParams failed: %s\n", |
fprintf(stderr, "sgi_volume: alSetParams failed: %s\n", |
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alGetErrorString(oserror())); |
alGetErrorString(oserror())); |
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return; |
return; |
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} |
} |
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|
|
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#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
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fprintf(stderr, "wave_out_volume: returning\n"); |
fprintf(stderr, "sgi_volume: returning\n"); |
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#endif |
#endif |
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} |
} |
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void |
void |
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wave_out_write(STREAM s, uint16 tick, uint8 index) |
sgi_play(void) |
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{ |
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struct audio_packet *packet = &packet_queue[queue_hi]; |
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unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE; |
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if (next_hi == queue_lo) |
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{ |
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fprintf(stderr, "No space to queue audio packet\n"); |
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return; |
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} |
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queue_hi = next_hi; |
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packet->s = *s; |
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packet->tick = tick; |
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packet->index = index; |
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packet->s.p += 4; |
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/* we steal the data buffer from s, give it a new one */ |
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s->data = malloc(s->size); |
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if (!g_dsp_busy) |
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wave_out_play(); |
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} |
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void |
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wave_out_play(void) |
|
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{ |
{ |
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struct audio_packet *packet; |
struct audio_packet *packet; |
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ssize_t len; |
ssize_t len; |
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unsigned int i; |
unsigned int i; |
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uint8 swap; |
|
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STREAM out; |
STREAM out; |
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static BOOL swapped = False; |
|
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int gf; |
int gf; |
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|
|
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while (1) |
while (1) |
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{ |
{ |
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if (queue_lo == queue_hi) |
if (rdpsnd_queue_empty()) |
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{ |
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g_dsp_busy = False; |
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return; |
return; |
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} |
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packet = &packet_queue[queue_lo]; |
packet = rdpsnd_queue_current_packet(); |
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out = &packet->s; |
out = &packet->s; |
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/* Swap the current packet, but only once */ |
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if (g_swapaudio && !swapped) |
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{ |
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for (i = 0; i < out->end - out->p; i += 2) |
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{ |
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swap = *(out->p + i); |
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*(out->p + i) = *(out->p + i + 1); |
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*(out->p + i + 1) = swap; |
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} |
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swapped = True; |
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} |
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len = out->end - out->p; |
len = out->end - out->p; |
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|
|
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alWriteFrames(output_port, out->p, len / combinedFrameSize); |
alWriteFrames(output_port, out->p, len / combinedFrameSize); |
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if (out->p == out->end) |
if (out->p == out->end) |
275 |
{ |
{ |
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gf = alGetFilled(output_port); |
gf = alGetFilled(output_port); |
277 |
if ( gf < (4 * maxFillable / 10) ) |
if (gf < (4 * maxFillable / 10)) |
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{ |
{ |
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rdpsnd_send_completion(packet->tick, packet->index); |
rdpsnd_queue_next(0); |
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free(out->data); |
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queue_lo = (queue_lo + 1) % MAX_QUEUE; |
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swapped = False; |
|
280 |
} |
} |
281 |
else |
else |
282 |
{ |
{ |
283 |
#if (defined(IRIX_DEBUG)) |
#if (defined(IRIX_DEBUG)) |
284 |
/* fprintf(stderr,"Busy playing...\n"); */ |
/* fprintf(stderr,"Busy playing...\n"); */ |
285 |
#endif |
#endif |
286 |
g_dsp_busy = True; |
usleep(10); |
287 |
return; |
return; |
288 |
} |
} |
289 |
} |
} |
290 |
} |
} |
291 |
} |
} |
292 |
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293 |
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struct audio_driver * |
294 |
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sgi_register(char *options) |
295 |
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{ |
296 |
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static struct audio_driver sgi_driver; |
297 |
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298 |
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memset(&sgi_driver, 0, sizeof(sgi_driver)); |
299 |
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300 |
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sgi_driver.name = "sgi"; |
301 |
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sgi_driver.description = "SGI output driver"; |
302 |
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303 |
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sgi_driver.add_fds = sgi_add_fds; |
304 |
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sgi_driver.check_fds = sgi_check_fds; |
305 |
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306 |
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sgi_driver.wave_out_open = sgi_open; |
307 |
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sgi_driver.wave_out_close = sgi_close; |
308 |
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sgi_driver.wave_out_format_supported = sgi_format_supported; |
309 |
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sgi_driver.wave_out_set_format = sgi_set_format; |
310 |
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sgi_driver.wave_out_volume = sgi_volume; |
311 |
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312 |
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sgi_driver.need_byteswap_on_be = 1; |
313 |
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sgi_driver.need_resampling = 0; |
314 |
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315 |
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if (options) |
316 |
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{ |
317 |
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sgi_output_device = xstrdup(options); |
318 |
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} |
319 |
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return &sgi_driver; |
320 |
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} |