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winwave: poll mode

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Signed-off-by: malc <av1474@comtv.ru>
This commit is contained in:
malc 2009-10-10 16:57:52 +04:00
parent d56316388d
commit e0bda367e5
1 changed files with 61 additions and 0 deletions
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61
audio/winwaveaudio.c
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@ -1,6 +1,7 @@
/* public domain */
#include "qemu-common.h"
#include "sysemu.h"
#include "audio.h"
#define AUDIO_CAP "winwave"
@ -23,6 +24,7 @@ typedef struct {
HWVoiceOut hw;
HWAVEOUT hwo;
WAVEHDR *hdrs;
HANDLE event;
void *pcm_buf;
int avail;
int pending;
@ -120,6 +122,12 @@ static void CALLBACK winwave_callback (
wave->avail += conf.dac_samples;
}
LeaveCriticalSection (&wave->crit_sect);
if (wave->hw.poll_mode) {
if (!SetEvent (wave->event)) {
AUD_log (AUDIO_CAP, "SetEvent failed %lx\n",
GetLastError ());
}
}
}
}
break;
@ -211,6 +219,7 @@ static int winwave_run_out (HWVoiceOut *hw, int live)
{
WaveVoiceOut *wave = (WaveVoiceOut *) hw;
int decr;
int doreset;
EnterCriticalSection (&wave->crit_sect);
{
@ -221,6 +230,11 @@ static int winwave_run_out (HWVoiceOut *hw, int live)
}
LeaveCriticalSection (&wave->crit_sect);
doreset = hw->poll_mode && (wave->pending >= conf.dac_samples);
if (doreset && !ResetEvent (wave->event)) {
AUD_log (AUDIO_CAP, "ResetEvent failed %lx\n", GetLastError ());
}
while (wave->pending >= conf.dac_samples) {
MMRESULT mr;
WAVEHDR *h = &wave->hdrs[wave->curhdr];
@ -235,6 +249,7 @@ static int winwave_run_out (HWVoiceOut *hw, int live)
wave->pending -= conf.dac_samples;
wave->curhdr = (wave->curhdr + 1) % conf.dac_headers;
}
return decr;
}
@ -249,15 +264,61 @@ static void winwave_fini_out (HWVoiceOut *hw)
qemu_free (wave->hdrs);
wave->hdrs = NULL;
if (wave->event) {
if (!CloseHandle (wave->event)) {
AUD_log (AUDIO_CAP, "CloseHandle failed %lx\n", GetLastError ());
}
wave->event = NULL;
}
}
static void winwave_poll_out (void *opaque)
{
(void) opaque;
audio_run ("winwave_poll_out");
}
static int winwave_ctl_out (HWVoiceOut *hw, int cmd, ...)
{
WaveVoiceOut *wave = (WaveVoiceOut *) hw;
switch (cmd) {
case VOICE_ENABLE:
{
va_list ap;
int poll_mode;
va_start (ap, cmd);
poll_mode = va_arg (ap, int);
va_end (ap);
if (poll_mode && !wave->event) {
wave->event = CreateEvent (NULL, TRUE, TRUE, NULL);
if (!wave->event) {
AUD_log (AUDIO_CAP,
"CreateEvent: %lx, poll mode will be disabled\n",
GetLastError ());
}
}
if (wave->event) {
int ret;
ret = qemu_add_wait_object (wave->event, winwave_poll_out,
wave);
hw->poll_mode = (ret == 0);
}
else {
hw->poll_mode = 0;
}
}
return 0;
case VOICE_DISABLE:
if (wave->event) {
qemu_del_wait_object (wave->event, winwave_poll_out, wave);
}
return 0;
}
return -1;