Bochs/bochs/iodev/sound/soundoss.cc
Volker Ruppert c897ffa619 Cleanups in the Bochs system timer code
- Now using macro DEV_register_timer() in all devices and lowlevel modules.
- Removed unused timer stuff from the plugin.cc/.h code.
2017-03-30 18:08:15 +00:00

388 lines
9.7 KiB
C++

/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001-2017 The Bochs Project
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
/////////////////////////////////////////////////////////////////////////
// Josef Drexler coded the original version of the lowlevel sound support
// for Linux using OSS. The current version also supports OSS on FreeBSD.
// Define BX_PLUGGABLE in files that can be compiled into plugins. For
// platforms that require a special tag on exported symbols, BX_PLUGGABLE
// is used to know when we are exporting symbols and when we are importing.
#define BX_PLUGGABLE
#include "iodev.h"
#include "soundlow.h"
#include "soundmod.h"
#include "soundoss.h"
#if BX_HAVE_SOUND_OSS && BX_SUPPORT_SOUNDLOW
#define LOG_THIS
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
// sound driver plugin entry points
int CDECL liboss_sound_plugin_init(plugin_t *plugin, plugintype_t type)
{
// Nothing here yet
return 0; // Success
}
void CDECL liboss_sound_plugin_fini(void)
{
// Nothing here yet
}
// bx_soundlow_waveout_oss_c class implementation
bx_soundlow_waveout_oss_c::bx_soundlow_waveout_oss_c()
:bx_soundlow_waveout_c()
{
waveout_fd = -1;
}
bx_soundlow_waveout_oss_c::~bx_soundlow_waveout_oss_c()
{
if (waveout_fd != -1) {
close(waveout_fd);
waveout_fd = -1;
}
}
int bx_soundlow_waveout_oss_c::openwaveoutput(const char *wavedev)
{
if (waveout_fd == -1) {
waveout_fd = open(wavedev, O_WRONLY);
if (waveout_fd == -1) {
return BX_SOUNDLOW_ERR;
} else {
BX_INFO(("OSS: opened output device %s", wavedev));
}
}
set_pcm_params(&real_pcm_param);
pcm_callback_id = register_wave_callback(this, pcm_callback);
start_resampler_thread();
start_mixer_thread();
return BX_SOUNDLOW_OK;
}
int bx_soundlow_waveout_oss_c::set_pcm_params(bx_pcm_param_t *param)
{
int fmt, ret;
int frequency = param->samplerate;
int channels = param->channels;
int signeddata = param->format & 1;
BX_DEBUG(("set_pcm_params(): %u, %u, %u, %02x", param->samplerate, param->bits,
param->channels, param->format));
if (waveout_fd == -1) {
return BX_SOUNDLOW_ERR;
}
if (param->bits == 16) {
if (signeddata == 1) {
fmt = AFMT_S16_LE;
} else {
fmt = AFMT_U16_LE;
}
} else if (param->bits == 8) {
if (signeddata == 1) {
fmt = AFMT_S8;
} else {
fmt = AFMT_U8;
}
} else {
return BX_SOUNDLOW_ERR;
}
// set frequency etc.
ret = ioctl(waveout_fd, SNDCTL_DSP_RESET);
if (ret != 0)
BX_ERROR(("ioctl(SNDCTL_DSP_RESET): %s", strerror(errno)));
/*
ret = ioctl(waveout_fd], SNDCTL_DSP_SETFRAGMENT, &fragment);
if (ret != 0)
BX_DEBUG(("ioctl(SNDCTL_DSP_SETFRAGMENT, %d): %s",
fragment, strerror(errno)));
*/
ret = ioctl(waveout_fd, SNDCTL_DSP_SETFMT, &fmt);
if (ret != 0) { // abort if the format is unknown, to avoid playing noise
BX_ERROR(("ioctl(SNDCTL_DSP_SETFMT, %d): %s",
fmt, strerror(errno)));
return BX_SOUNDLOW_ERR;
}
ret = ioctl(waveout_fd, SNDCTL_DSP_CHANNELS, &channels);
if (ret != 0)
BX_ERROR(("ioctl(SNDCTL_DSP_CHANNELS, %d): %s",
channels, strerror(errno)));
ret = ioctl(waveout_fd, SNDCTL_DSP_SPEED, &frequency);
if (ret != 0)
BX_ERROR(("ioctl(SNDCTL_DSP_SPEED, %d): %s",
frequency, strerror(errno)));
// ioctl(wave_fd[0], SNDCTL_DSP_GETBLKSIZE, &fragment);
// BX_DEBUG(("current output block size is %d", fragment));
return BX_SOUNDLOW_OK;
}
int bx_soundlow_waveout_oss_c::output(int length, Bit8u data[])
{
int odelay, delay;
if (waveout_fd == -1) {
return BX_SOUNDLOW_ERR;
}
if (write(waveout_fd, data, length) == length) {
ioctl(waveout_fd, SNDCTL_DSP_GETODELAY, &odelay);
delay = odelay * 1000 / (real_pcm_param.samplerate * 4);
BX_MSLEEP(delay);
return BX_SOUNDLOW_OK;
} else {
return BX_SOUNDLOW_ERR;
}
}
// bx_soundlow_wavein_oss_c class implementation
bx_soundlow_wavein_oss_c::bx_soundlow_wavein_oss_c()
:bx_soundlow_wavein_c()
{
wavein_fd = -1;
}
bx_soundlow_wavein_oss_c::~bx_soundlow_wavein_oss_c()
{
if (wavein_fd != -1) {
close(wavein_fd);
wavein_fd = -1;
}
}
int bx_soundlow_wavein_oss_c::openwaveinput(const char *wavedev, sound_record_handler_t rh)
{
record_handler = rh;
if (rh != NULL) {
record_timer_index = DEV_register_timer(this, record_timer_handler, 1, 1, 0, "soundlnx");
// record timer: inactive, continuous, frequency variable
}
if (wavein_fd == -1) {
wavein_fd = open(wavedev, O_RDONLY);
if (wavein_fd == -1) {
return BX_SOUNDLOW_ERR;
} else {
BX_INFO(("OSS: opened input device %s", wavedev));
}
}
wavein_param.samplerate = 0;
return BX_SOUNDLOW_OK;
}
int bx_soundlow_wavein_oss_c::startwaverecord(bx_pcm_param_t *param)
{
Bit64u timer_val;
Bit8u shift = 0;
int fmt, ret;
int frequency = param->samplerate;
int channels = param->channels;
int signeddata = param->format & 1;
if (record_timer_index != BX_NULL_TIMER_HANDLE) {
if (param->bits == 16) shift++;
if (param->channels == 2) shift++;
record_packet_size = (param->samplerate / 10) << shift; // 0.1 sec
if (record_packet_size > BX_SOUNDLOW_WAVEPACKETSIZE) {
record_packet_size = BX_SOUNDLOW_WAVEPACKETSIZE;
}
timer_val = (Bit64u)record_packet_size * 1000000 / (param->samplerate << shift);
bx_pc_system.activate_timer(record_timer_index, (Bit32u)timer_val, 1);
}
if (wavein_fd == -1) {
return BX_SOUNDLOW_ERR;
} else {
if (memcmp(param, &wavein_param, sizeof(bx_pcm_param_t)) == 0) {
return BX_SOUNDLOW_OK; // nothing to do
}
wavein_param = *param;
}
if (param->bits == 16) {
if (signeddata == 1) {
fmt = AFMT_S16_LE;
} else {
fmt = AFMT_U16_LE;
}
} else if (param->bits == 8) {
if (signeddata == 1) {
fmt = AFMT_S8;
} else {
fmt = AFMT_U8;
}
} else {
return BX_SOUNDLOW_ERR;
}
// set frequency etc.
ret = ioctl(wavein_fd, SNDCTL_DSP_RESET);
if (ret != 0)
BX_ERROR(("ioctl(SNDCTL_DSP_RESET): %s", strerror(errno)));
ret = ioctl(wavein_fd, SNDCTL_DSP_SETFMT, &fmt);
if (ret != 0) { // abort if the format is unknown, to avoid playing noise
BX_ERROR(("ioctl(SNDCTL_DSP_SETFMT, %d): %s",
fmt, strerror(errno)));
return BX_SOUNDLOW_ERR;
}
ret = ioctl(wavein_fd, SNDCTL_DSP_CHANNELS, &channels);
if (ret != 0) {
BX_ERROR(("ioctl(SNDCTL_DSP_CHANNELS, %d): %s",
channels, strerror(errno)));
return BX_SOUNDLOW_ERR;
}
ret = ioctl(wavein_fd, SNDCTL_DSP_SPEED, &frequency);
if (ret != 0) {
BX_ERROR(("ioctl(SNDCTL_DSP_SPEED, %d): %s",
frequency, strerror(errno)));
return BX_SOUNDLOW_ERR;
}
return BX_SOUNDLOW_OK;
}
int bx_soundlow_wavein_oss_c::getwavepacket(int length, Bit8u data[])
{
int ret;
ret = read(wavein_fd, data, length);
if (ret == length) {
return BX_SOUNDLOW_OK;
} else {
BX_ERROR(("OSS: write error"));
return BX_SOUNDLOW_ERR;
}
}
int bx_soundlow_wavein_oss_c::stopwaverecord()
{
if (record_timer_index != BX_NULL_TIMER_HANDLE) {
bx_pc_system.deactivate_timer(record_timer_index);
}
return BX_SOUNDLOW_OK;
}
void bx_soundlow_wavein_oss_c::record_timer_handler(void *this_ptr)
{
bx_soundlow_wavein_oss_c *class_ptr = (bx_soundlow_wavein_oss_c *) this_ptr;
class_ptr->record_timer();
}
void bx_soundlow_wavein_oss_c::record_timer(void)
{
record_handler(this, record_packet_size);
}
// bx_soundlow_midiout_oss_c class implementation
bx_soundlow_midiout_oss_c::bx_soundlow_midiout_oss_c()
:bx_soundlow_midiout_c()
{
midi = NULL;
}
bx_soundlow_midiout_oss_c::~bx_soundlow_midiout_oss_c()
{
closemidioutput();
}
int bx_soundlow_midiout_oss_c::openmidioutput(const char *mididev)
{
if ((mididev == NULL) || (strlen(mididev) < 1))
return BX_SOUNDLOW_ERR;
midi = fopen(mididev,"w");
if (midi == NULL) {
BX_ERROR(("Couldn't open midi output device %s: %s",
mididev, strerror(errno)));
return BX_SOUNDLOW_ERR;
}
return BX_SOUNDLOW_OK;
}
int bx_soundlow_midiout_oss_c::sendmidicommand(int delta, int command, int length, Bit8u data[])
{
UNUSED(delta);
fputc(command, midi);
fwrite(data, 1, length, midi);
fflush(midi); // to start playing immediately
return BX_SOUNDLOW_OK;
}
int bx_soundlow_midiout_oss_c::closemidioutput()
{
if (midi != NULL) {
fclose(midi);
midi = NULL;
}
return BX_SOUNDLOW_OK;
}
// bx_sound_oss_c class implementation
bx_soundlow_waveout_c* bx_sound_oss_c::get_waveout()
{
if (waveout == NULL) {
waveout = new bx_soundlow_waveout_oss_c();
}
return waveout;
}
bx_soundlow_wavein_c* bx_sound_oss_c::get_wavein()
{
if (wavein == NULL) {
wavein = new bx_soundlow_wavein_oss_c();
}
return wavein;
}
bx_soundlow_midiout_c* bx_sound_oss_c::get_midiout()
{
if (midiout == NULL) {
midiout = new bx_soundlow_midiout_oss_c();
}
return midiout;
}
#endif