mirror of
https://github.com/reactos/reactos.git
synced 2024-08-21 19:03:01 +00:00
314 lines
6.2 KiB
C
314 lines
6.2 KiB
C
/* -*- c-basic-offset: 8 -*-
|
|
rdesktop: A Remote Desktop Protocol client.
|
|
Sound Channel Process Functions - Sun
|
|
Copyright (C) Matthew Chapman 2003
|
|
Copyright (C) GuoJunBo guojunbo@ict.ac.cn 2003
|
|
Copyright (C) Michael Gernoth mike@zerfleddert.de 2003
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License along
|
|
with this program; if not, write to the Free Software Foundation, Inc.,
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "rdesktop.h"
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/audioio.h>
|
|
|
|
#if (defined(sun) && (defined(__svr4__) || defined(__SVR4)))
|
|
#include <stropts.h>
|
|
#endif
|
|
|
|
#define MAX_QUEUE 10
|
|
|
|
int This->dsp_;
|
|
BOOL This->dsp_bu = False;
|
|
static BOOL g_reopened;
|
|
static BOOL g_swapaudio;
|
|
static short g_samplewidth;
|
|
|
|
static struct audio_packet
|
|
{
|
|
struct stream s;
|
|
uint16 tick;
|
|
uint8 index;
|
|
} packet_queue[MAX_QUEUE];
|
|
static unsigned int queue_hi, queue_lo;
|
|
|
|
BOOL
|
|
wave_out_open(void)
|
|
{
|
|
char *dsp_dev = getenv("AUDIODEV");
|
|
|
|
if (dsp_dev == NULL)
|
|
{
|
|
dsp_dev = xstrdup("/dev/audio");
|
|
}
|
|
|
|
if ((This->dsp_ = open(dsp_dev, O_WRONLY | O_NONBLOCK)) == -1)
|
|
{
|
|
perror(dsp_dev);
|
|
return False;
|
|
}
|
|
|
|
/* Non-blocking so that user interface is responsive */
|
|
fcntl(This->dsp_, F_SETFL, fcntl(This->dsp_, F_GETFL) | O_NONBLOCK);
|
|
|
|
queue_lo = queue_hi = 0;
|
|
g_reopened = True;
|
|
|
|
return True;
|
|
}
|
|
|
|
void
|
|
wave_out_close(void)
|
|
{
|
|
/* Ack all remaining packets */
|
|
while (queue_lo != queue_hi)
|
|
{
|
|
rdpsnd_send_completion(packet_queue[queue_lo].tick, packet_queue[queue_lo].index);
|
|
free(packet_queue[queue_lo].s.data);
|
|
queue_lo = (queue_lo + 1) % MAX_QUEUE;
|
|
}
|
|
|
|
#if defined I_FLUSH && defined FLUSHW
|
|
/* Flush the audiobuffer */
|
|
ioctl(This->dsp_, I_FLUSH, FLUSHW);
|
|
#endif
|
|
#if defined AUDIO_FLUSH
|
|
ioctl(This->dsp_, AUDIO_FLUSH, NULL);
|
|
#endif
|
|
close(This->dsp_);
|
|
}
|
|
|
|
BOOL
|
|
wave_out_format_supported(WAVEFORMATEX * pwfx)
|
|
{
|
|
if (pwfx->wFormatTag != WAVE_FORMAT_PCM)
|
|
return False;
|
|
if ((pwfx->nChannels != 1) && (pwfx->nChannels != 2))
|
|
return False;
|
|
if ((pwfx->wBitsPerSample != 8) && (pwfx->wBitsPerSample != 16))
|
|
return False;
|
|
|
|
return True;
|
|
}
|
|
|
|
BOOL
|
|
wave_out_set_format(WAVEFORMATEX * pwfx)
|
|
{
|
|
audio_info_t info;
|
|
|
|
ioctl(This->dsp_, AUDIO_DRAIN, 0);
|
|
g_swapaudio = False;
|
|
AUDIO_INITINFO(&info);
|
|
|
|
|
|
if (pwfx->wBitsPerSample == 8)
|
|
{
|
|
info.play.encoding = AUDIO_ENCODING_LINEAR8;
|
|
}
|
|
else if (pwfx->wBitsPerSample == 16)
|
|
{
|
|
info.play.encoding = AUDIO_ENCODING_LINEAR;
|
|
/* Do we need to swap the 16bit values? (Are we BigEndian) */
|
|
#ifdef B_ENDIAN
|
|
g_swapaudio = 1;
|
|
#else
|
|
g_swapaudio = 0;
|
|
#endif
|
|
}
|
|
|
|
g_samplewidth = pwfx->wBitsPerSample / 8;
|
|
|
|
if (pwfx->nChannels == 1)
|
|
{
|
|
info.play.channels = 1;
|
|
}
|
|
else if (pwfx->nChannels == 2)
|
|
{
|
|
info.play.channels = 2;
|
|
g_samplewidth *= 2;
|
|
}
|
|
|
|
info.play.sample_rate = pwfx->nSamplesPerSec;
|
|
info.play.precision = pwfx->wBitsPerSample;
|
|
info.play.samples = 0;
|
|
info.play.eof = 0;
|
|
info.play.error = 0;
|
|
g_reopened = True;
|
|
|
|
if (ioctl(This->dsp_, AUDIO_SETINFO, &info) == -1)
|
|
{
|
|
perror("AUDIO_SETINFO");
|
|
close(This->dsp_);
|
|
return False;
|
|
}
|
|
|
|
return True;
|
|
}
|
|
|
|
void
|
|
wave_out_volume(uint16 left, uint16 right)
|
|
{
|
|
audio_info_t info;
|
|
uint balance;
|
|
uint volume;
|
|
|
|
AUDIO_INITINFO(&info);
|
|
|
|
volume = (left > right) ? left : right;
|
|
|
|
if (volume / AUDIO_MID_BALANCE != 0)
|
|
{
|
|
balance =
|
|
AUDIO_MID_BALANCE - (left / (volume / AUDIO_MID_BALANCE)) +
|
|
(right / (volume / AUDIO_MID_BALANCE));
|
|
}
|
|
else
|
|
{
|
|
balance = AUDIO_MID_BALANCE;
|
|
}
|
|
|
|
info.play.gain = volume / (65536 / AUDIO_MAX_GAIN);
|
|
info.play.balance = balance;
|
|
|
|
if (ioctl(This->dsp_, AUDIO_SETINFO, &info) == -1)
|
|
{
|
|
perror("AUDIO_SETINFO");
|
|
return;
|
|
}
|
|
}
|
|
|
|
void
|
|
wave_out_write(STREAM s, uint16 tick, uint8 index)
|
|
{
|
|
struct audio_packet *packet = &packet_queue[queue_hi];
|
|
unsigned int next_hi = (queue_hi + 1) % MAX_QUEUE;
|
|
|
|
if (next_hi == queue_lo)
|
|
{
|
|
error("No space to queue audio packet\n");
|
|
return;
|
|
}
|
|
|
|
queue_hi = next_hi;
|
|
|
|
packet->s = *s;
|
|
packet->tick = tick;
|
|
packet->index = index;
|
|
packet->s.p += 4;
|
|
|
|
/* we steal the data buffer from s, give it a new one */
|
|
s->data = malloc(s->size);
|
|
|
|
if (!This->dsp_bu)
|
|
wave_out_play();
|
|
}
|
|
|
|
void
|
|
wave_out_play(void)
|
|
{
|
|
struct audio_packet *packet;
|
|
audio_info_t info;
|
|
ssize_t len;
|
|
unsigned int i;
|
|
uint8 swap;
|
|
STREAM out;
|
|
static BOOL swapped = False;
|
|
static BOOL sentcompletion = True;
|
|
static uint32 samplecnt = 0;
|
|
static uint32 numsamples;
|
|
|
|
while (1)
|
|
{
|
|
if (g_reopened)
|
|
{
|
|
/* Device was just (re)openend */
|
|
samplecnt = 0;
|
|
swapped = False;
|
|
sentcompletion = True;
|
|
g_reopened = False;
|
|
}
|
|
|
|
if (queue_lo == queue_hi)
|
|
{
|
|
This->dsp_bu = 0;
|
|
return;
|
|
}
|
|
|
|
packet = &packet_queue[queue_lo];
|
|
out = &packet->s;
|
|
|
|
/* Swap the current packet, but only once */
|
|
if (g_swapaudio && !swapped)
|
|
{
|
|
for (i = 0; i < out->end - out->p; i += 2)
|
|
{
|
|
swap = *(out->p + i);
|
|
*(out->p + i) = *(out->p + i + 1);
|
|
*(out->p + i + 1) = swap;
|
|
}
|
|
swapped = True;
|
|
}
|
|
|
|
if (sentcompletion)
|
|
{
|
|
sentcompletion = False;
|
|
numsamples = (out->end - out->p) / g_samplewidth;
|
|
}
|
|
|
|
len = 0;
|
|
|
|
if (out->end != out->p)
|
|
{
|
|
len = write(This->dsp_, out->p, out->end - out->p);
|
|
if (len == -1)
|
|
{
|
|
if (errno != EWOULDBLOCK)
|
|
perror("write audio");
|
|
This->dsp_bu = 1;
|
|
return;
|
|
}
|
|
}
|
|
|
|
out->p += len;
|
|
if (out->p == out->end)
|
|
{
|
|
if (ioctl(This->dsp_, AUDIO_GETINFO, &info) == -1)
|
|
{
|
|
perror("AUDIO_GETINFO");
|
|
return;
|
|
}
|
|
|
|
/* Ack the packet, if we have played at least 70% */
|
|
if (info.play.samples >= samplecnt + ((numsamples * 7) / 10))
|
|
{
|
|
samplecnt += numsamples;
|
|
rdpsnd_send_completion(packet->tick, packet->index);
|
|
free(out->data);
|
|
queue_lo = (queue_lo + 1) % MAX_QUEUE;
|
|
swapped = False;
|
|
sentcompletion = True;
|
|
}
|
|
else
|
|
{
|
|
This->dsp_bu = 1;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|