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Bochs/bochs/iodev/sound/soundlnx.cc
Volker Ruppert c6bd3fb60c - moved the sound stuff to the new subdirectory iodev/sound 
- TODO #1: update MSVC workspace files
- TODO #2: these 'device classes' could be moved to subdirectories, too:
  - pci (when we have more than one chipset)
  - display (when we have one more device and vga / cirrus cleaned up)
2012-01-15 07:52:04 +00:00

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/////////////////////////////////////////////////////////////////////////
// $Id$
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001-2011 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 and
// ALSA PCM input/output on Linux.
#include "iodev.h"
#include "soundmod.h"
#include "soundlnx.h"
#if (defined(linux) || defined(__FreeBSD__) || defined(__FreeBSD_kernel__)) && BX_SUPPORT_SOUNDLOW
#define LOG_THIS device->
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/soundcard.h>
bx_sound_linux_c::bx_sound_linux_c(logfunctions *dev)
:bx_sound_lowlevel_c(dev)
{
#if BX_HAVE_ALSASOUND
alsa_seq.handle = NULL;
alsa_pcm[0].handle = NULL;
alsa_pcm[1].handle = NULL;
alsa_pcm[0].buffer = NULL;
alsa_pcm[1].buffer = NULL;
#endif
midi = NULL;
wave_device[0] = NULL;
wave_device[1] = NULL;
wave_fd[0] = -1;
wave_fd[1] = -1;
BX_INFO(("Sound lowlevel module 'linux' initialized"));
}
bx_sound_linux_c::~bx_sound_linux_c()
{
// nothing for now
}
int bx_sound_linux_c::waveready()
{
return BX_SOUNDLOW_OK;
}
int bx_sound_linux_c::midiready()
{
return BX_SOUNDLOW_OK;
}
#if BX_HAVE_ALSASOUND
int bx_sound_linux_c::alsa_seq_open(const char *alsadev)
{
char *mididev, *ptr;
int client, port, ret = 0;
int length = strlen(alsadev) + 1;
mididev = new char[length];
if (mididev == NULL)
return BX_SOUNDLOW_ERR;
strcpy(mididev, alsadev);
ptr = strtok(mididev, ":");
if (ptr == NULL) {
BX_ERROR(("ALSA sequencer setup: missing client parameters"));
return BX_SOUNDLOW_ERR;
}
client = atoi(ptr);
ptr = strtok(NULL, ":");
if (ptr == NULL) {
BX_ERROR(("ALSA sequencer setup: missing port parameter"));
return BX_SOUNDLOW_ERR;
}
port = atoi(ptr);
delete(mididev);
if (snd_seq_open(&alsa_seq.handle, "default", SND_SEQ_OPEN_OUTPUT, 0) < 0) {
BX_ERROR(("Couldn't open ALSA sequencer for midi output"));
return BX_SOUNDLOW_ERR;
}
ret = snd_seq_create_simple_port(alsa_seq.handle, NULL,
SND_SEQ_PORT_CAP_WRITE |
SND_SEQ_PORT_CAP_SUBS_WRITE |
SND_SEQ_PORT_CAP_READ,
SND_SEQ_PORT_TYPE_MIDI_GENERIC);
if (ret < 0) {
BX_ERROR(("ALSA sequencer: error creating port %s", snd_strerror(errno)));
} else {
alsa_seq.source_port = ret;
ret = snd_seq_connect_to(alsa_seq.handle, alsa_seq.source_port, client, port);
if (ret < 0) {
BX_ERROR(("ALSA sequencer: could not connect to port %d:%d", client, port));
}
}
if (ret < 0) {
snd_seq_close(alsa_seq.handle);
return BX_SOUNDLOW_ERR;
} else {
return BX_SOUNDLOW_OK;
}
}
#endif
int bx_sound_linux_c::openmidioutput(const char *mididev)
{
if ((mididev == NULL) || (strlen(mididev) < 1))
return BX_SOUNDLOW_ERR;
#if BX_HAVE_ALSASOUND
use_alsa_seq = !strncmp(mididev, "alsa:", 5);
if (use_alsa_seq) {
return alsa_seq_open(mididev+5);
}
#endif
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;
}
#if BX_HAVE_ALSASOUND
int bx_sound_linux_c::alsa_seq_output(int delta, int command, int length, Bit8u data[])
{
int cmd, chan, value;
snd_seq_event_t ev;
snd_seq_ev_clear(&ev);
snd_seq_ev_set_source(&ev, alsa_seq.source_port);
snd_seq_ev_set_subs(&ev);
snd_seq_ev_set_direct(&ev);
cmd = command & 0xf0;
chan = command & 0x0f;
switch (cmd) {
case 0x80:
ev.type = SND_SEQ_EVENT_NOTEOFF;
ev.data.note.channel = chan;
ev.data.note.note = data[0];
ev.data.note.velocity = data[1];
ev.data.note.duration = delta;
break;
case 0x90:
ev.type = SND_SEQ_EVENT_NOTEON;
ev.data.note.channel = chan;
ev.data.note.note = data[0];
ev.data.note.velocity = data[1];
ev.data.note.duration = 0;
break;
case 0xa0:
ev.type = SND_SEQ_EVENT_KEYPRESS;
ev.data.control.channel = chan;
ev.data.control.param = data[0];
ev.data.control.value = data[1];
break;
case 0xb0:
ev.type = SND_SEQ_EVENT_CONTROLLER;
ev.data.control.channel = chan;
ev.data.control.param = data[0];
ev.data.control.value = data[1];
break;
case 0xc0:
ev.type = SND_SEQ_EVENT_PGMCHANGE;
ev.data.control.channel = chan;
ev.data.control.value = data[0];
break;
case 0xd0:
ev.type = SND_SEQ_EVENT_CHANPRESS;
ev.data.control.channel = chan;
ev.data.control.value = data[0];
break;
case 0xe0:
ev.type = SND_SEQ_EVENT_PITCHBEND;
ev.data.control.channel = chan;
value = data[0] | (data[1] << 7);
value -= 0x2000;
ev.data.control.value = value;
break;
case 0xf0:
BX_ERROR(("alsa_seq_output(): SYSEX not implemented, length=%d", length));
return BX_SOUNDLOW_ERR;
default:
BX_ERROR(("alsa_seq_output(): unknown command 0x%02x, length=%d", command, length));
return BX_SOUNDLOW_ERR;
}
snd_seq_event_output(alsa_seq.handle, &ev);
snd_seq_drain_output(alsa_seq.handle);
return BX_SOUNDLOW_OK;
}
#endif
int bx_sound_linux_c::sendmidicommand(int delta, int command, int length, Bit8u data[])
{
#if BX_HAVE_ALSASOUND
if ((use_alsa_seq) && (alsa_seq.handle != NULL)) {
return alsa_seq_output(delta, command, length, data);
}
#endif
UNUSED(delta);
fputc(command, midi);
fwrite(data, 1, length, midi);
fflush(midi); // to start playing immediately
return BX_SOUNDLOW_OK;
}
int bx_sound_linux_c::closemidioutput()
{
#if BX_HAVE_ALSASOUND
if ((use_alsa_seq) && (alsa_seq.handle != NULL)) {
snd_seq_close(alsa_seq.handle);
return BX_SOUNDLOW_OK;
}
#endif
fclose(midi);
return BX_SOUNDLOW_OK;
}
int bx_sound_linux_c::openwaveoutput(const char *wavedev)
{
#if BX_HAVE_ALSASOUND
use_alsa_pcm = !strcmp(wavedev, "alsa");
if (use_alsa_pcm) {
return BX_SOUNDLOW_OK;
}
#endif
int length = strlen(wavedev) + 1;
if (wave_device[0] != NULL)
delete [] wave_device[0];
wave_device[0] = new char[length];
if (wave_device[0] == NULL)
return BX_SOUNDLOW_ERR;
strncpy(wave_device[0], wavedev, length);
return BX_SOUNDLOW_OK;
}
#if BX_HAVE_ALSASOUND
int bx_sound_linux_c::alsa_pcm_open(bx_bool mode, int frequency, int bits, bx_bool stereo, int format)
{
int ret;
snd_pcm_format_t fmt;
snd_pcm_hw_params_t *params;
unsigned int size, freq;
int dir, signeddata = format & 1;
alsa_pcm[mode].audio_bufsize = 0;
if (alsa_pcm[mode].handle == NULL) {
ret = snd_pcm_open(&alsa_pcm[mode].handle, "default", mode ? SND_PCM_STREAM_CAPTURE : SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK);
if (ret < 0) {
return BX_SOUNDLOW_ERR;
}
BX_INFO(("ALSA: opened default PCM %s device", mode ? "input":"output"));
}
snd_pcm_hw_params_alloca(&params);
snd_pcm_hw_params_any(alsa_pcm[mode].handle, params);
snd_pcm_hw_params_set_access(alsa_pcm[mode].handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);
if ((frequency == wave_ch[mode].oldfreq) &&
(bits == wave_ch[mode].oldbits) &&
(stereo == wave_ch[mode].oldstereo) &&
(format == wave_ch[mode].oldformat))
return BX_SOUNDLOW_OK; // nothing to do
wave_ch[mode].oldfreq = frequency;
wave_ch[mode].oldbits = bits;
wave_ch[mode].oldstereo = stereo;
wave_ch[mode].oldformat = format;
freq = (unsigned int)frequency;
if (bits == 16) {
if (signeddata == 1)
fmt = SND_PCM_FORMAT_S16_LE;
else
fmt = SND_PCM_FORMAT_U16_LE;
size = 2;
} else if (bits == 8) {
if (signeddata == 1)
fmt = SND_PCM_FORMAT_S8;
else
fmt = SND_PCM_FORMAT_U8;
size = 1;
} else
return BX_SOUNDLOW_ERR;
if (stereo) size *= 2;
snd_pcm_hw_params_set_format(alsa_pcm[mode].handle, params, fmt);
snd_pcm_hw_params_set_channels(alsa_pcm[mode].handle, params, (stereo != 0) ? 2 : 1);
snd_pcm_hw_params_set_rate_near(alsa_pcm[mode].handle, params, &freq, &dir);
alsa_pcm[mode].frames = 32;
snd_pcm_hw_params_set_period_size_near(alsa_pcm[mode].handle, params, &alsa_pcm[mode].frames, &dir);
ret = snd_pcm_hw_params(alsa_pcm[mode].handle, params);
if (ret < 0) {
return BX_SOUNDLOW_ERR;
}
snd_pcm_hw_params_get_period_size(params, &alsa_pcm[mode].frames, &dir);
alsa_pcm[mode].alsa_bufsize = alsa_pcm[mode].frames * size;
BX_DEBUG(("ALSA: buffer size set to %d", alsa_pcm[mode].alsa_bufsize));
if (alsa_pcm[mode].buffer != NULL) {
free(alsa_pcm[mode].buffer);
alsa_pcm[mode].buffer = NULL;
}
return BX_SOUNDLOW_OK;
}
#endif
int bx_sound_linux_c::startwaveplayback(int frequency, int bits, bx_bool stereo, int format)
{
int fmt, ret;
int signeddata = format & 1;
#if BX_HAVE_ALSASOUND
if (use_alsa_pcm) {
return alsa_pcm_open(0, frequency, bits, stereo, format);
}
#endif
if ((wave_device[0] == NULL) || (strlen(wave_device[0]) < 1))
return BX_SOUNDLOW_ERR;
if (wave_fd[0] == -1) {
wave_fd[0] = open(wave_device[0], O_WRONLY);
if (wave_fd[0] == -1) {
return BX_SOUNDLOW_ERR;
} else {
BX_INFO(("OSS: opened output device %s", wave_device[0]));
}
} else {
if ((frequency == wave_ch[0].oldfreq) &&
(bits == wave_ch[0].oldbits) &&
(stereo == wave_ch[0].oldstereo) &&
(format == wave_ch[0].oldformat))
return BX_SOUNDLOW_OK; // nothing to do
}
wave_ch[0].oldfreq = frequency;
wave_ch[0].oldbits = bits;
wave_ch[0].oldstereo = stereo;
wave_ch[0].oldformat = format;
if (bits == 16)
if (signeddata == 1)
fmt = AFMT_S16_LE;
else
fmt = AFMT_U16_LE;
else if (bits == 8)
if (signeddata == 1)
fmt = AFMT_S8;
else
fmt = AFMT_U8;
else
return BX_SOUNDLOW_ERR;
// set frequency etc.
ret = ioctl(wave_fd[0], SNDCTL_DSP_RESET);
if (ret != 0)
BX_DEBUG(("ioctl(SNDCTL_DSP_RESET): %s", strerror(errno)));
/*
ret = ioctl(wave_fd[0], SNDCTL_DSP_SETFRAGMENT, &fragment);
if (ret != 0)
BX_DEBUG(("ioctl(SNDCTL_DSP_SETFRAGMENT, %d): %s",
fragment, strerror(errno)));
*/
ret = ioctl(wave_fd[0], SNDCTL_DSP_SETFMT, &fmt);
if (ret != 0) // abort if the format is unknown, to avoid playing noise
{
BX_DEBUG(("ioctl(SNDCTL_DSP_SETFMT, %d): %s",
fmt, strerror(errno)));
return BX_SOUNDLOW_ERR;
}
ret = ioctl(wave_fd[0], SNDCTL_DSP_STEREO, &stereo);
if (ret != 0)
BX_DEBUG(("ioctl(SNDCTL_DSP_STEREO, %d): %s",
stereo, strerror(errno)));
ret = ioctl(wave_fd[0], SNDCTL_DSP_SPEED, &frequency);
if (ret != 0)
BX_DEBUG(("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;
}
#if BX_HAVE_ALSASOUND
int bx_sound_linux_c::alsa_pcm_write()
{
int ret;
if (alsa_pcm[0].buffer == NULL) {
alsa_pcm[0].buffer = (char *)malloc(alsa_pcm[0].alsa_bufsize);
}
while (alsa_pcm[0].audio_bufsize >= alsa_pcm[0].alsa_bufsize) {
memcpy(alsa_pcm[0].buffer, audio_buffer[0], alsa_pcm[0].alsa_bufsize);
ret = snd_pcm_writei(alsa_pcm[0].handle, alsa_pcm[0].buffer, alsa_pcm[0].frames);
if (ret == -EAGAIN)
continue;
if (ret == -EPIPE) {
/* EPIPE means underrun */
BX_ERROR(("ALSA: underrun occurred"));
snd_pcm_prepare(alsa_pcm[0].handle);
} else if (ret < 0) {
BX_ERROR(("ALSA: error from writei: %s", snd_strerror(ret)));
} else if (ret != (int)alsa_pcm[0].frames) {
BX_ERROR(("ALSA: short write, write %d frames", ret));
}
alsa_pcm[0].audio_bufsize -= alsa_pcm[0].alsa_bufsize;
memcpy(audio_buffer[0], audio_buffer[0]+alsa_pcm[0].alsa_bufsize, alsa_pcm[0].audio_bufsize);
}
if ((alsa_pcm[0].audio_bufsize == 0) && (alsa_pcm[0].buffer != NULL)) {
free(alsa_pcm[0].buffer);
alsa_pcm[0].buffer = NULL;
}
return BX_SOUNDLOW_OK;
}
#endif
int bx_sound_linux_c::sendwavepacket(int length, Bit8u data[])
{
#if BX_HAVE_ALSASOUND
if (use_alsa_pcm) {
if ((alsa_pcm[0].audio_bufsize+length) <= BX_SOUND_LINUX_BUFSIZE) {
memcpy(audio_buffer[0]+alsa_pcm[0].audio_bufsize, data, length);
alsa_pcm[0].audio_bufsize += length;
} else {
BX_ERROR(("ALSA: audio buffer overflow"));
return BX_SOUNDLOW_ERR;
}
if (alsa_pcm[0].audio_bufsize < alsa_pcm[0].alsa_bufsize) {
return BX_SOUNDLOW_OK;
} else {
return alsa_pcm_write();
}
}
#endif
int ret = write(wave_fd[0], data, length);
if (ret == length) {
return BX_SOUNDLOW_OK;
} else {
BX_ERROR(("OSS: write error"));
return BX_SOUNDLOW_ERR;
}
}
int bx_sound_linux_c::stopwaveplayback()
{
#if BX_HAVE_ALSASOUND
if (use_alsa_pcm && (alsa_pcm[0].audio_bufsize > 0)) {
if (alsa_pcm[0].audio_bufsize < alsa_pcm[0].alsa_bufsize) {
memset(audio_buffer[0]+alsa_pcm[0].audio_bufsize, 0, alsa_pcm[0].alsa_bufsize-alsa_pcm[0].audio_bufsize);
alsa_pcm[0].audio_bufsize = alsa_pcm[0].alsa_bufsize;
}
alsa_pcm_write();
return BX_SOUNDLOW_OK;
}
#endif
// ioctl(wave_fd[0], SNDCTL_DSP_SYNC);
// close(wave_fd[0]);
// wave_fd[0] = -1;
return BX_SOUNDLOW_OK;
}
int bx_sound_linux_c::closewaveoutput()
{
#if BX_HAVE_ALSASOUND
if (use_alsa_pcm && (alsa_pcm[0].handle != NULL)) {
snd_pcm_drain(alsa_pcm[0].handle);
snd_pcm_close(alsa_pcm[0].handle);
alsa_pcm[0].handle = NULL;
return BX_SOUNDLOW_OK;
}
#endif
if (wave_device[0] != NULL)
delete(wave_device[0]);
if (wave_fd[0] != -1)
{
close(wave_fd[0]);
wave_fd[0] = -1;
}
wave_device[0] = NULL;
return BX_SOUNDLOW_OK;
}
int bx_sound_linux_c::openwaveinput(const char *wavedev, sound_record_handler_t rh)
{
record_handler = rh;
if (rh != NULL) {
record_timer_index = bx_pc_system.register_timer(this, record_timer_handler, 1, 1, 0, "soundlnx");
// record timer: inactive, continuous, frequency variable
}
#if BX_HAVE_ALSASOUND
use_alsa_pcm = !strcmp(wavedev, "alsa");
if (use_alsa_pcm) {
return BX_SOUNDLOW_OK;
}
#endif
int length = strlen(wavedev) + 1;
if (wave_device[1] != NULL)
delete [] wave_device[1];
wave_device[1] = new char[length];
if (wave_device[1] == NULL)
return BX_SOUNDLOW_ERR;
strncpy(wave_device[1], wavedev, length);
return BX_SOUNDLOW_OK;
}
int bx_sound_linux_c::startwaverecord(int frequency, int bits, bx_bool stereo, int format)
{
Bit64u timer_val;
Bit8u shift = 0;
int fmt, ret;
int signeddata = format & 1;
if (record_timer_index != BX_NULL_TIMER_HANDLE) {
if (bits == 16) shift++;
if (stereo) shift++;
record_packet_size = (frequency / 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 / (frequency << shift);
bx_pc_system.activate_timer(record_timer_index, (Bit32u)timer_val, 1);
}
#if BX_HAVE_ALSASOUND
if (use_alsa_pcm) {
return alsa_pcm_open(1, frequency, bits, stereo, format);
}
#endif
if ((wave_device[1] == NULL) || (strlen(wave_device[1]) < 1))
return BX_SOUNDLOW_ERR;
if (wave_fd[1] == -1) {
wave_fd[1] = open(wave_device[1], O_RDONLY);
if (wave_fd[1] == -1) {
return BX_SOUNDLOW_ERR;
} else {
BX_INFO(("OSS: opened input device %s", wave_device[1]));
}
} else {
if ((frequency == wave_ch[0].oldfreq) &&
(bits == wave_ch[0].oldbits) &&
(stereo == wave_ch[0].oldstereo) &&
(format == wave_ch[0].oldformat))
return BX_SOUNDLOW_OK; // nothing to do
}
wave_ch[0].oldfreq = frequency;
wave_ch[0].oldbits = bits;
wave_ch[0].oldstereo = stereo;
wave_ch[0].oldformat = format;
if (bits == 16)
if (signeddata == 1)
fmt = AFMT_S16_LE;
else
fmt = AFMT_U16_LE;
else if (bits == 8)
if (signeddata == 1)
fmt = AFMT_S8;
else
fmt = AFMT_U8;
else
return BX_SOUNDLOW_ERR;
// set frequency etc.
ret = ioctl(wave_fd[1], SNDCTL_DSP_RESET);
if (ret != 0)
BX_DEBUG(("ioctl(SNDCTL_DSP_RESET): %s", strerror(errno)));
ret = ioctl(wave_fd[1], SNDCTL_DSP_SETFMT, &fmt);
if (ret != 0) { // abort if the format is unknown, to avoid playing noise
BX_DEBUG(("ioctl(SNDCTL_DSP_SETFMT, %d): %s",
fmt, strerror(errno)));
return BX_SOUNDLOW_ERR;
}
ret = ioctl(wave_fd[1], SNDCTL_DSP_STEREO, &stereo);
if (ret != 0) {
BX_DEBUG(("ioctl(SNDCTL_DSP_STEREO, %d): %s",
stereo, strerror(errno)));
return BX_SOUNDLOW_ERR;
}
ret = ioctl(wave_fd[1], SNDCTL_DSP_SPEED, &frequency);
if (ret != 0) {
BX_DEBUG(("ioctl(SNDCTL_DSP_SPEED, %d): %s",
frequency, strerror(errno)));
return BX_SOUNDLOW_ERR;
}
return BX_SOUNDLOW_OK;
}
int bx_sound_linux_c::getwavepacket(int length, Bit8u data[])
{
int ret;
#if BX_HAVE_ALSASOUND
if (use_alsa_pcm) {
if (alsa_pcm[1].buffer == NULL) {
alsa_pcm[1].buffer = (char *)malloc(alsa_pcm[1].alsa_bufsize);
}
while (alsa_pcm[1].audio_bufsize < length) {
ret = snd_pcm_readi(alsa_pcm[1].handle, alsa_pcm[1].buffer, alsa_pcm[1].frames);
if (ret == -EAGAIN)
continue;
if (ret == -EPIPE) {
/* EPIPE means overrun */
BX_ERROR(("overrun occurred"));
snd_pcm_prepare(alsa_pcm[1].handle);
} else if (ret < 0) {
BX_ERROR(("error from read: %s", snd_strerror(ret)));
} else if (ret != (int)alsa_pcm[1].frames) {
BX_ERROR(("short read, read %d frames", ret));
}
memcpy(audio_buffer[1]+alsa_pcm[1].audio_bufsize, alsa_pcm[1].buffer, alsa_pcm[1].alsa_bufsize);
alsa_pcm[1].audio_bufsize += alsa_pcm[1].alsa_bufsize;
}
memcpy(data, audio_buffer[1], length);
alsa_pcm[1].audio_bufsize -= length;
if ((alsa_pcm[1].audio_bufsize <= 0) && (alsa_pcm[1].buffer != NULL)) {
free(alsa_pcm[1].buffer);
alsa_pcm[1].buffer = NULL;
}
return BX_SOUNDLOW_OK;
}
#endif
ret = read(wave_fd[1], data, length);
if (ret == length) {
return BX_SOUNDLOW_OK;
} else {
BX_ERROR(("OSS: write error"));
return BX_SOUNDLOW_ERR;
}
}
int bx_sound_linux_c::stopwaverecord()
{
if (record_timer_index != BX_NULL_TIMER_HANDLE) {
bx_pc_system.deactivate_timer(record_timer_index);
}
#if BX_HAVE_ALSASOUND
if (use_alsa_pcm && (alsa_pcm[1].handle != NULL)) {
snd_pcm_drain(alsa_pcm[1].handle);
return BX_SOUNDLOW_OK;
}
#endif
return BX_SOUNDLOW_OK;
}
int bx_sound_linux_c::closewaveinput()
{
stopwaverecord();
#if BX_HAVE_ALSASOUND
if (use_alsa_pcm && (alsa_pcm[1].handle != NULL)) {
snd_pcm_drain(alsa_pcm[1].handle);
snd_pcm_close(alsa_pcm[1].handle);
alsa_pcm[1].handle = NULL;
return BX_SOUNDLOW_OK;
}
#endif
if (wave_device[1] != NULL)
delete(wave_device[1]);
if (wave_fd[1] != -1)
{
close(wave_fd[1]);
wave_fd[1] = -1;
}
wave_device[1] = NULL;
return BX_SOUNDLOW_OK;
}
void bx_sound_linux_c::record_timer_handler(void *this_ptr)
{
bx_sound_linux_c *class_ptr = (bx_sound_linux_c *) this_ptr;
class_ptr->record_timer();
}
void bx_sound_linux_c::record_timer(void)
{
record_handler(this->device, record_packet_size);
}
#endif
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