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audio: poll mode infrastructure 

Signed-off-by: malc <av1474@comtv.ru>
This commit is contained in:
malc 2009-09-12 02:28:45 +04:00
parent 435c247a9f
commit 713a98f8f1
2 changed files with 87 additions and 11 deletions
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94
audio/audio.c
View File

@ -34,6 +34,7 @@
/* #define DEBUG_LIVE */
/* #define DEBUG_OUT */
/* #define DEBUG_CAPTURE */
/* #define DEBUG_POLL */
#define SW_NAME(sw) (sw)->name ? (sw)->name : "unknown"
@ -64,6 +65,8 @@ static struct {
} period;
int plive;
int log_to_monitor;
int try_poll_in;
int try_poll_out;
} conf = {
.fixed_out = { /* DAC fixed settings */
.enabled = 1,
@ -92,6 +95,8 @@ static struct {
.period = { .hertz = 250 },
.plive = 0,
.log_to_monitor = 0,
.try_poll_in = 1,
.try_poll_out = 1,
};
static AudioState glob_audio_state;
@ -1082,6 +1087,47 @@ static void audio_pcm_print_info (const char *cap, struct audio_pcm_info *info)
#undef DAC
#include "audio_template.h"
/*
* Timer
*/
static void audio_timer (void *opaque)
{
AudioState *s = opaque;
audio_run ("timer");
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
}
static int audio_is_timer_needed (void)
{
HWVoiceIn *hwi = NULL;
HWVoiceOut *hwo = NULL;
while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
if (!hwo->poll_mode) return 1;
}
while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
if (!hwi->poll_mode) return 1;
}
return 0;
}
static void audio_reset_timer (void)
{
AudioState *s = &glob_audio_state;
if (audio_is_timer_needed ()) {
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + 1);
}
else {
qemu_del_timer (s->ts);
}
}
/*
* Public API
*/
int AUD_write (SWVoiceOut *sw, void *buf, int size)
{
int bytes;
@ -1142,7 +1188,8 @@ void AUD_set_active_out (SWVoiceOut *sw, int on)
if (!hw->enabled) {
hw->enabled = 1;
if (s->vm_running) {
hw->pcm_ops->ctl_out (hw, VOICE_ENABLE);
hw->pcm_ops->ctl_out (hw, VOICE_ENABLE, conf.try_poll_out);
audio_reset_timer ();
}
}
}
@ -1186,7 +1233,7 @@ void AUD_set_active_in (SWVoiceIn *sw, int on)
if (!hw->enabled) {
hw->enabled = 1;
if (s->vm_running) {
hw->pcm_ops->ctl_in (hw, VOICE_ENABLE);
hw->pcm_ops->ctl_in (hw, VOICE_ENABLE, conf.try_poll_in);
}
}
sw->total_hw_samples_acquired = hw->total_samples_captured;
@ -1480,15 +1527,29 @@ static void audio_run_capture (AudioState *s)
}
}
static void audio_timer (void *opaque)
void audio_run (const char *msg)
{
AudioState *s = opaque;
AudioState *s = &glob_audio_state;
audio_run_out (s);
audio_run_in (s);
audio_run_capture (s);
#ifdef DEBUG_POLL
{
static double prevtime;
double currtime;
struct timeval tv;
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
if (gettimeofday (&tv, NULL)) {
perror ("audio_run: gettimeofday");
return;
}
currtime = tv.tv_sec + tv.tv_usec * 1e-6;
dolog ("Elapsed since last %s: %f\n", msg, currtime - prevtime);
prevtime = currtime;
}
#endif
}
static struct audio_option audio_options[] = {
@ -1523,6 +1584,12 @@ static struct audio_option audio_options[] = {
.valp = &conf.fixed_out.nb_voices,
.descr = "Number of voices for DAC"
},
{
.name = "DAC_TRY_POLL",
.tag = AUD_OPT_BOOL,
.valp = &conf.try_poll_out,
.descr = "Attempt using poll mode for DAC"
},
/* ADC */
{
.name = "ADC_FIXED_SETTINGS",
@ -1554,6 +1621,12 @@ static struct audio_option audio_options[] = {
.valp = &conf.fixed_in.nb_voices,
.descr = "Number of voices for ADC"
},
{
.name = "ADC_TRY_POLL",
.tag = AUD_OPT_BOOL,
.valp = &conf.try_poll_out,
.descr = "Attempt using poll mode for ADC"
},
/* Misc */
{
.name = "TIMER_PERIOD",
@ -1571,7 +1644,7 @@ static struct audio_option audio_options[] = {
.name = "LOG_TO_MONITOR",
.tag = AUD_OPT_BOOL,
.valp = &conf.log_to_monitor,
.descr = "print logging messages to monitor instead of stderr"
.descr = "Print logging messages to monitor instead of stderr"
},
{ /* End of list */ }
};
@ -1676,12 +1749,13 @@ static void audio_vm_change_state_handler (void *opaque, int running,
s->vm_running = running;
while ((hwo = audio_pcm_hw_find_any_enabled_out (hwo))) {
hwo->pcm_ops->ctl_out (hwo, op);
hwo->pcm_ops->ctl_out (hwo, op, conf.try_poll_out);
}
while ((hwi = audio_pcm_hw_find_any_enabled_in (hwi))) {
hwi->pcm_ops->ctl_in (hwi, op);
hwi->pcm_ops->ctl_in (hwi, op, conf.try_poll_in);
}
audio_reset_timer ();
}
static void audio_atexit (void)
@ -1739,6 +1813,7 @@ static void audio_init (void)
size_t i;
int done = 0;
const char *drvname;
VMChangeStateEntry *e;
AudioState *s = &glob_audio_state;
if (s->drv) {
@ -1812,8 +1887,6 @@ static void audio_init (void)
}
}
VMChangeStateEntry *e;
if (conf.period.hertz <= 0) {
if (conf.period.hertz < 0) {
dolog ("warning: Timer period is negative - %d "
@ -1833,7 +1906,6 @@ static void audio_init (void)
LIST_INIT (&s->card_head);
register_savevm ("audio", 0, 1, audio_save, audio_load, s);
qemu_mod_timer (s->ts, qemu_get_clock (vm_clock) + conf.period.ticks);
}
void AUD_register_card (const char *name, QEMUSoundCard *card)

4
audio/audio_int.h
View File

@ -68,6 +68,7 @@ typedef struct SWVoiceCap SWVoiceCap;
typedef struct HWVoiceOut {
int enabled;
int poll_mode;
int pending_disable;
struct audio_pcm_info info;
@ -87,6 +88,7 @@ typedef struct HWVoiceOut {
typedef struct HWVoiceIn {
int enabled;
int poll_mode;
struct audio_pcm_info info;
t_sample *conv;
@ -222,6 +224,8 @@ int audio_pcm_hw_get_live_out2 (HWVoiceOut *hw, int *nb_live);
int audio_bug (const char *funcname, int cond);
void *audio_calloc (const char *funcname, int nmemb, size_t size);
void audio_run (const char *msg);
#define VOICE_ENABLE 1
#define VOICE_DISABLE 2