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audio: add audiodev properties to frontends

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Finally add audiodev= options to audio frontends so users can specify
which backend to use when multiple backends exist.  Not specifying an
audiodev= option currently causes the first audiodev to be used, this is
fixed in the next commit.

Example usage: -audiodev pa,id=foo -device AC97,audiodev=foo

Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: d64db52dda2d0e9d97bc5ab1dd9adf724280fea1.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Kővágó, Zoltán 2019-08-19 01:06:49 +02:00 • committed by Gerd Hoffmann
parent f0b9f36d71
commit 88e47b9a45
15 changed files with 91 additions and 1 deletions
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57
hw/core/qdev-properties-system.c
View file

@ -11,6 +11,7 @@
*/
#include "qemu/osdep.h"
#include "audio/audio.h"
#include "net/net.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
@ -353,6 +354,62 @@ const PropertyInfo qdev_prop_netdev = {
};
/* --- audiodev --- */
static void get_audiodev(Object *obj, Visitor *v, const char* name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
QEMUSoundCard *card = qdev_get_prop_ptr(dev, prop);
char *p = g_strdup(audio_get_id(card));
visit_type_str(v, name, &p, errp);
g_free(p);
}
static void set_audiodev(Object *obj, Visitor *v, const char* name,
void *opaque, Error **errp)
{
DeviceState *dev = DEVICE(obj);
Property *prop = opaque;
QEMUSoundCard *card = qdev_get_prop_ptr(dev, prop);
AudioState *state;
Error *local_err = NULL;
int err = 0;
char *str;
if (dev->realized) {
qdev_prop_set_after_realize(dev, name, errp);
return;
}
visit_type_str(v, name, &str, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
state = audio_state_by_name(str);
if (!state) {
err = -ENOENT;
goto out;
}
card->state = state;
out:
error_set_from_qdev_prop_error(errp, err, dev, prop, str);
g_free(str);
}
const PropertyInfo qdev_prop_audiodev = {
.name = "str",
.description = "ID of an audiodev to use as a backend",
/* release done on shutdown */
.get = get_audiodev,
.set = set_audiodev,
};
void qdev_prop_set_drive(DeviceState *dev, const char *name,
BlockBackend *value, Error **errp)
{