+++ /dev/null
-/* -*- 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;
- }
- }
- }
-}
projects / reactos.git / blobdiff