+++ /dev/null
-/* -*- c-basic-offset: 8 -*-
- rdesktop: A Remote Desktop Protocol client.
- Sound Channel Process Functions - Open Sound System
- Copyright (C) Matthew Chapman 2003
- Copyright (C) GuoJunBo guojunbo@ict.ac.cn 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.
-*/
-
-/*
- This is a workaround for Esound bug 312665.
- FIXME: Remove this when Esound is fixed.
-*/
-#ifdef _FILE_OFFSET_BITS
-#undef _FILE_OFFSET_BITS
-#endif
-
-#include "rdesktop.h"
-#include <unistd.h>
-#include <fcntl.h>
-#include <errno.h>
-#include <sys/time.h>
-#include <sys/ioctl.h>
-#include <sys/soundcard.h>
-
-#define MAX_QUEUE 10
-
-int This->dsp_;
-BOOL This->dsp_bu = False;
-static int g_snd_rate;
-static short g_samplewidth;
-static BOOL g_driver_broken = False;
-
-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/dsp");
- }
-
- 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);
- return True;
-}
-
-void
-wave_out_close(void)
-{
- 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)
-{
- int stereo, format, fragments;
-
- ioctl(This->dsp_, SNDCTL_DSP_RESET, NULL);
- ioctl(This->dsp_, SNDCTL_DSP_SYNC, NULL);
-
- if (pwfx->wBitsPerSample == 8)
- format = AFMT_U8;
- else if (pwfx->wBitsPerSample == 16)
- format = AFMT_S16_LE;
-
- g_samplewidth = pwfx->wBitsPerSample / 8;
-
- if (ioctl(This->dsp_, SNDCTL_DSP_SETFMT, &format) == -1)
- {
- perror("SNDCTL_DSP_SETFMT");
- close(This->dsp_);
- return False;
- }
-
- if (pwfx->nChannels == 2)
- {
- stereo = 1;
- g_samplewidth *= 2;
- }
- else
- {
- stereo = 0;
- }
-
- if (ioctl(This->dsp_, SNDCTL_DSP_STEREO, &stereo) == -1)
- {
- perror("SNDCTL_DSP_CHANNELS");
- close(This->dsp_);
- return False;
- }
-
- g_snd_rate = pwfx->nSamplesPerSec;
- if (ioctl(This->dsp_, SNDCTL_DSP_SPEED, &g_snd_rate) == -1)
- {
- perror("SNDCTL_DSP_SPEED");
- close(This->dsp_);
- return False;
- }
-
- /* try to get 7 fragments of 2^12 bytes size */
- fragments = (7 << 16) + 12;
- ioctl(This->dsp_, SNDCTL_DSP_SETFRAGMENT, &fragments);
-
- if (!g_driver_broken)
- {
- audio_buf_info info;
-
- memset(&info, 0, sizeof(info));
- if (ioctl(This->dsp_, SNDCTL_DSP_GETOSPACE, &info) == -1)
- {
- perror("SNDCTL_DSP_GETOSPACE");
- close(This->dsp_);
- return False;
- }
-
- if (info.fragments == 0 || info.fragstotal == 0 || info.fragsize == 0)
- {
- fprintf(stderr,
- "Broken OSS-driver detected: fragments: %d, fragstotal: %d, fragsize: %d\n",
- info.fragments, info.fragstotal, info.fragsize);
- g_driver_broken = True;
- }
- }
-
- return True;
-}
-
-void
-wave_out_volume(uint16 left, uint16 right)
-{
- static BOOL use_dev_mixer = False;
- uint32 volume;
- int fd_mix = -1;
-
- volume = left / (65536 / 100);
- volume |= right / (65536 / 100) << 8;
-
- if (use_dev_mixer)
- {
- if ((fd_mix = open("/dev/mixer", O_RDWR | O_NONBLOCK)) == -1)
- {
- perror("open /dev/mixer");
- return;
- }
-
- if (ioctl(fd_mix, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1)
- {
- perror("MIXER_WRITE(SOUND_MIXER_PCM)");
- return;
- }
-
- close(fd_mix);
- }
-
- if (ioctl(This->dsp_, MIXER_WRITE(SOUND_MIXER_PCM), &volume) == -1)
- {
- perror("MIXER_WRITE(SOUND_MIXER_PCM)");
- use_dev_mixer = True;
- 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 = (uint8 *) malloc(s->size);
-
- if (!This->dsp_bu)
- wave_out_play();
-}
-
-void
-wave_out_play(void)
-{
- struct audio_packet *packet;
- ssize_t len;
- STREAM out;
- static long startedat_us;
- static long startedat_s;
- static BOOL started = False;
- struct timeval tv;
- audio_buf_info info;
-
- while (1)
- {
- if (queue_lo == queue_hi)
- {
- This->dsp_bu = 0;
- return;
- }
-
- packet = &packet_queue[queue_lo];
- out = &packet->s;
-
- if (!started)
- {
- gettimeofday(&tv, NULL);
- startedat_us = tv.tv_usec;
- startedat_s = tv.tv_sec;
- started = True;
- }
-
- len = out->end - out->p;
-
- if (!g_driver_broken)
- {
- memset(&info, 0, sizeof(info));
- if (ioctl(This->dsp_, SNDCTL_DSP_GETOSPACE, &info) == -1)
- {
- perror("SNDCTL_DSP_GETOSPACE");
- return;
- }
-
- if (info.fragments == 0)
- {
- This->dsp_bu = 1;
- return;
- }
-
- if (info.fragments * info.fragsize < len
- && info.fragments * info.fragsize > 0)
- {
- len = info.fragments * info.fragsize;
- }
- }
-
-
- len = write(This->dsp_, out->p, len);
- if (len == -1)
- {
- if (errno != EWOULDBLOCK)
- perror("write audio");
- This->dsp_bu = 1;
- return;
- }
-
- out->p += len;
- if (out->p == out->end)
- {
- long long duration;
- long elapsed;
-
- gettimeofday(&tv, NULL);
- duration = (out->size * (1000000 / (g_samplewidth * g_snd_rate)));
- elapsed = (tv.tv_sec - startedat_s) * 1000000 + (tv.tv_usec - startedat_us);
-
- if (elapsed >= (duration * 85) / 100)
- {
- rdpsnd_send_completion(packet->tick, packet->index);
- free(out->data);
- queue_lo = (queue_lo + 1) % MAX_QUEUE;
- started = False;
- }
- else
- {
- This->dsp_bu = 1;
- return;
- }
- }
- }
-}
projects / reactos.git / blobdiff