3dca0bd8cf
- Beep thread now only started one per simulation. - Added some more multithreading macros and use them in rfb, vncsrv and soundmod. - TODO: implement mixer thread and remove beep thread.
355 lines
9.2 KiB
C++
355 lines
9.2 KiB
C++
/////////////////////////////////////////////////////////////////////////
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// $Id$
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/////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2011-2015 The Bochs Project
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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// Common sound module code and dummy sound lowlevel functions
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// Define BX_PLUGGABLE in files that can be compiled into plugins. For
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// platforms that require a special tag on exported symbols, BX_PLUGGABLE
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// is used to know when we are exporting symbols and when we are importing.
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#define BX_PLUGGABLE
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#include "iodev.h"
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#if BX_SUPPORT_SOUNDLOW
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#include "soundmod.h"
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#include "soundlow.h"
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#include "soundlnx.h"
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#include "soundosx.h"
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#include "soundwin.h"
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#include "soundsdl.h"
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#include "soundalsa.h"
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#ifndef WIN32
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#include <pthread.h>
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#endif
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#if BX_WITH_SDL || BX_WITH_SDL2
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#include <SDL.h>
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#endif
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#define LOG_THIS theSoundModCtl->
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bx_soundmod_ctl_c* theSoundModCtl = NULL;
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BX_THREAD_ID(threadID);
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BX_MUTEX(beep_mutex);
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static int beep_control;
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Bit8u *beep_buffer;
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unsigned int beep_bufsize;
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bx_pcm_param_t beep_param;
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Bit32u beep_callback(void *dev, Bit16u rate, Bit8u *buffer, Bit32u len);
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BX_THREAD_FUNC(beep_thread, indata);
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int CDECL libsoundmod_LTX_plugin_init(plugin_t *plugin, plugintype_t type, int argc, char *argv[])
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{
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if (type == PLUGTYPE_CORE) {
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theSoundModCtl = new bx_soundmod_ctl_c;
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bx_devices.pluginSoundModCtl = theSoundModCtl;
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return 0; // Success
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} else {
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return -1;
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}
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}
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void CDECL libsoundmod_LTX_plugin_fini(void)
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{
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delete theSoundModCtl;
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}
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bx_soundmod_ctl_c::bx_soundmod_ctl_c()
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{
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put("soundctl", "SNDCTL");
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soundmod = NULL;
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}
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bx_soundmod_ctl_c::~bx_soundmod_ctl_c()
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{
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beep_active = 0;
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if (beep_callback_id < 0) {
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beep_control = 0;
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while (beep_control >= 0) {
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BX_MSLEEP(1);
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}
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} else {
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soundmod->unregister_wave_callback(beep_callback_id);
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}
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free(beep_buffer);
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if (soundmod != NULL) {
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soundmod->closewaveoutput();
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}
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delete soundmod;
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}
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void bx_soundmod_ctl_c::init()
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{
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static const char default_name[] = BX_SOUND_LOWLEVEL_NAME;
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const char *driver = SIM->get_param_string(BXPN_SOUND_DRIVER)->getptr();
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const char *waveout = SIM->get_param_string(BXPN_SOUND_WAVEOUT)->getptr();
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const char *wavein = SIM->get_param_string(BXPN_SOUND_WAVEIN)->getptr();
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if (strcmp(driver, "default") == 0) {
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driver = default_name;
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}
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if (strcmp(driver, "dummy") == 0) {
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soundmod = new bx_sound_lowlevel_c();
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#if BX_HAVE_ALSASOUND
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} else if (!strcmp(driver, "alsa")) {
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soundmod = new bx_sound_alsa_c();
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#endif
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#if BX_WITH_SDL || BX_WITH_SDL2
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} else if (!strcmp(driver, "sdl")) {
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soundmod = new bx_sound_sdl_c();
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#endif
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#if (defined(linux) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__))
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} else if (!strcmp(driver, "oss")) {
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soundmod = new bx_sound_linux_c();
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#endif
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#if defined(macintosh)
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} else if (!strcmp(driver, "osx")) {
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soundmod = new bx_sound_osx_c();
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#endif
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#if defined(WIN32)
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} else if (!strcmp(driver, "win")) {
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soundmod = new bx_sound_windows_c();
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#endif
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} else {
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BX_PANIC(("unknown lowlevel sound driver '%s'", driver));
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return;
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}
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if (!strlen(wavein)) {
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SIM->get_param_string(BXPN_SOUND_WAVEIN)->set(waveout);
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}
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int ret = soundmod->openwaveoutput(waveout);
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if (ret != BX_SOUNDLOW_OK) {
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BX_PANIC(("Could not open wave output device"));
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} else {
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beep_active = 0;
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beep_callback_id = soundmod->register_wave_callback(theSoundModCtl, beep_callback);
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beep_cur_freq = 0.0;
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beep_bufsize = 4410;
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beep_buffer = (Bit8u*)malloc(beep_bufsize);
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BX_INIT_MUTEX(beep_mutex);
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if (beep_callback_id < 0) {
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beep_param.samplerate = 44100;
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beep_param.bits = 16;
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beep_param.channels = 2;
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beep_param.format = 1;
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BX_THREAD_CREATE(beep_thread, soundmod, threadID);
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}
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soundmod->startwaveplayback(44100, 16, 1, 1);
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}
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}
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void* bx_soundmod_ctl_c::get_module()
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{
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return soundmod;
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}
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Bit32u bx_soundmod_ctl_c::beep_generator(Bit16u rate, Bit8u *buffer, Bit32u len)
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{
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Bit32u j = 0;
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Bit16u beep_samples;
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static Bit8u beep_level = 0x40;
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static Bit16u beep_pos = 0;
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BX_LOCK(beep_mutex);
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if (!beep_active) {
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BX_UNLOCK(beep_mutex);
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return 0;
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}
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beep_samples = (Bit32u)((float)rate / beep_cur_freq / 2);
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do {
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buffer[j++] = 0;
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buffer[j++] = beep_level;
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buffer[j++] = 0;
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buffer[j++] = beep_level;
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if ((++beep_pos % beep_samples) == 0) {
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beep_level ^= 0x80;
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beep_pos = 0;
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beep_samples = (Bit32u)((float)rate / beep_cur_freq / 2);
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}
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} while (j < len);
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BX_UNLOCK(beep_mutex);
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return len;
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}
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Bit32u beep_callback(void *dev, Bit16u rate, Bit8u *buffer, Bit32u len)
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{
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return ((bx_soundmod_ctl_c*)dev)->beep_generator(rate, buffer, len);
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}
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BX_THREAD_FUNC(beep_thread, indata)
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{
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Bit32u len = 0;
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bx_sound_lowlevel_c *soundmod = (bx_sound_lowlevel_c*)indata;
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beep_control = 1;
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while (beep_control > 0) {
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len = theSoundModCtl->beep_generator(44100, beep_buffer, beep_bufsize);
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if (len > 0) {
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soundmod->sendwavepacket(beep_bufsize, beep_buffer, &beep_param);
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if (soundmod->get_type() == BX_SOUNDLOW_WIN) {
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BX_MSLEEP(25);
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} else {
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BX_MSLEEP(1);
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}
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} else {
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BX_MSLEEP(25);
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}
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}
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beep_control = -1;
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BX_THREAD_EXIT;
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}
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bx_bool bx_soundmod_ctl_c::beep_on(float frequency)
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{
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if (soundmod != NULL) {
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BX_DEBUG(("Beep ON (frequency=%.2f)",frequency));
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if (frequency != beep_cur_freq) {
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BX_LOCK(beep_mutex);
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beep_cur_freq = frequency;
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beep_active = 1;
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BX_UNLOCK(beep_mutex);
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}
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return 1;
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}
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return 0;
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}
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bx_bool bx_soundmod_ctl_c::beep_off()
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{
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if (soundmod != NULL) {
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BX_DEBUG(("Beep OFF"));
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BX_LOCK(beep_mutex);
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beep_active = 0;
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beep_cur_freq = 0.0;
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BX_UNLOCK(beep_mutex);
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return 1;
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}
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return 0;
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}
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/* Handlers for the VOC file output */
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// Write the header of the VOC file.
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void bx_soundmod_ctl_c::VOC_init_file(FILE *stream)
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{
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struct {
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char id[20];
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Bit16u headerlen; // All in LITTLE Endian!
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Bit16u version;
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Bit16u chksum;
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} vocheader =
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{ "Creative Voice File",
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#ifdef BX_LITTLE_ENDIAN
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0x1a, 0x0114, 0x111f };
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#else
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0x1a00, 0x1401, 0x1f11 };
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#endif
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vocheader.id[19] = 26; // Replace string end with 26
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fwrite(&vocheader, 1, sizeof vocheader, stream);
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}
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// write one block to the VOC file
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void bx_soundmod_ctl_c::VOC_write_block(FILE *stream, int block,
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Bit32u headerlen, Bit8u header[],
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Bit32u datalen, Bit8u data[])
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{
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Bit32u i;
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if (block > 9) {
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BX_ERROR(("VOC Block %d not recognized, ignored.", block));
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return;
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}
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fputc(block, stream);
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i = headerlen + datalen;
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#ifdef BX_LITTLE_ENDIAN
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fwrite(&i, 1, 3, stream); // write the length in 24-bit little endian
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#else
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Bit8u lengthbytes[3];
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lengthbytes[0] = i & 0xff; i >>= 8;
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lengthbytes[1] = i & 0xff; i >>= 8;
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lengthbytes[2] = i & 0xff;
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fwrite(lengthbytes, 1, 3, stream);
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#endif
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BX_DEBUG(("Voc block %d; Headerlen %d; Datalen %d",
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block, headerlen, datalen));
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if (headerlen > 0)
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fwrite(header, 1, headerlen, stream);
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if (datalen > 0)
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fwrite(data, 1, datalen, stream);
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}
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void bx_soundmod_ctl_c::pcm_apply_volume(Bit32u datalen, Bit8u data[], Bit16u volume,
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Bit8u bits, bx_bool stereo, bx_bool issigned)
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{
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unsigned i;
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Bit8u value8u;
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Bit8s value8s;
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Bit16u value16u, tmpvol;
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Bit16s value16s;
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Bit8u volumes[2], channel = 0;
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if (stereo) {
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volumes[0] = (Bit8u)(volume & 0xff);
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volumes[1] = (Bit8u)(volume >> 8);
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} else {
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tmpvol = ((volume & 0xff) + (volume >> 8)) / 2;
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volumes[0] = volumes[1] = (Bit8u)tmpvol;
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}
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if (bits == 16) {
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for (i = 0; i < datalen; i += 2) {
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if (issigned) {
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value16s = (Bit16s)(data[i] | (data[i+1] << 8));
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value16s = (Bit16s)((Bit32s)value16s * volumes[channel] / 256);
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data[i] = (Bit8u)(value16s & 0xff);
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data[i+1] = (Bit8u)(value16s >> 8);
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} else {
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value16u = data[i] | (data[i+1] << 8);
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value16u = (Bit16u)((Bit32u)value16u * volumes[channel] / 256);
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data[i] = (Bit8u)(value16u & 0xff);
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data[i+1] = (Bit8u)(value16u >> 8);
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}
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channel ^= 1;
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}
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} else {
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for (i = 0; i < datalen; i++) {
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if (issigned) {
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value8s = (Bit8s)data[i];
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data[i] = (Bit8u)(((Bit16s)value8s * volumes[channel]) / 256);
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} else {
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value8u = data[i];
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data[i] = (Bit8u)(((Bit16u)value8u * volumes[channel]) / 256);
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}
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channel ^= 1;
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}
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}
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}
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#endif
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