[PATCH 24/37] audio: drop audio driver registration

marcandre.lureau@redhat.com posted 37 patches 2 days, 2 hours ago
Maintainers: Gerd Hoffmann <kraxel@redhat.com>, Christian Schoenebeck <qemu_oss@crudebyte.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>, Thomas Huth <huth@tuxfamily.org>, Alexandre Ratchov <alex@caoua.org>, Laurent Vivier <laurent@vivier.eu>, Manos Pitsidianakis <manos.pitsidianakis@linaro.org>, "Michael S. Tsirkin" <mst@redhat.com>, Alistair Francis <alistair@alistair23.me>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, "Alex Bennée" <alex.bennee@linaro.org>, "Daniel P. Berrangé" <berrange@redhat.com>, Eduardo Habkost <eduardo@habkost.net>, John Snow <jsnow@redhat.com>, Cleber Rosa <crosa@redhat.com>
[PATCH 24/37] audio: drop audio driver registration
Posted by marcandre.lureau@redhat.com 2 days, 2 hours ago
From: Marc-André Lureau <marcandre.lureau@redhat.com>

module_object_class_by_name() handles loading the module providing the
requested object.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
---
 audio/audio_int.h   |  2 --
 audio/alsaaudio.c   |  1 -
 audio/audio.c       | 43 +++++++++++++------------------------------
 audio/dbusaudio.c   |  1 -
 audio/dsoundaudio.c |  1 -
 audio/jackaudio.c   |  1 -
 audio/noaudio.c     |  1 -
 audio/ossaudio.c    |  1 -
 audio/paaudio.c     |  1 -
 audio/pwaudio.c     |  1 -
 audio/sdlaudio.c    |  1 -
 audio/sndioaudio.c  |  1 -
 audio/spiceaudio.c  |  1 -
 audio/wavaudio.c    |  1 -
 audio/coreaudio.m   |  1 -
 15 files changed, 13 insertions(+), 45 deletions(-)

diff --git a/audio/audio_int.h b/audio/audio_int.h
index 0b97c8edee3..446ba1d52c6 100644
--- a/audio/audio_int.h
+++ b/audio/audio_int.h
@@ -259,8 +259,6 @@ extern const struct mixeng_volume nominal_volume;
 
 extern const char *audio_prio_list[];
 
-void audio_driver_register(audio_driver *drv);
-
 void audio_pcm_init_info (struct audio_pcm_info *info, const struct audsettings *as);
 void audio_pcm_info_clear_buf (struct audio_pcm_info *info, void *buf, int len);
 
diff --git a/audio/alsaaudio.c b/audio/alsaaudio.c
index 881f3d0349d..e8541e1a2a3 100644
--- a/audio/alsaaudio.c
+++ b/audio/alsaaudio.c
@@ -972,7 +972,6 @@ static const TypeInfo audio_alsa_info = {
 
 static void register_audio_alsa(void)
 {
-    audio_driver_register(&alsa_audio_driver);
     type_register_static(&audio_alsa_info);
 }
 type_init(register_audio_alsa);
diff --git a/audio/audio.c b/audio/audio.c
index f6896229cfb..53b3ad09bf9 100644
--- a/audio/audio.c
+++ b/audio/audio.c
@@ -67,40 +67,21 @@ const char *audio_prio_list[] = {
     NULL
 };
 
-static QLIST_HEAD(, audio_driver) audio_drivers;
 static AudiodevListHead audiodevs =
     QSIMPLEQ_HEAD_INITIALIZER(audiodevs);
 static AudiodevListHead default_audiodevs =
     QSIMPLEQ_HEAD_INITIALIZER(default_audiodevs);
 
-
-void audio_driver_register(audio_driver *drv)
-{
-    QLIST_INSERT_HEAD(&audio_drivers, drv, next);
-}
-
-static audio_driver *audio_driver_lookup(const char *name)
+static AudioBackendClass *audio_be_class_by_name(const char *name)
 {
-    struct audio_driver *d;
-    Error *local_err = NULL;
-    int rv;
+    g_autofree char *tname = g_strconcat("audio-", name, NULL);
+    ObjectClass *oc = module_object_class_by_name(tname);
 
-    QLIST_FOREACH(d, &audio_drivers, next) {
-        if (strcmp(name, d->name) == 0) {
-            return d;
-        }
-    }
-    rv = audio_module_load(name, &local_err);
-    if (rv > 0) {
-        QLIST_FOREACH(d, &audio_drivers, next) {
-            if (strcmp(name, d->name) == 0) {
-                return d;
-            }
-        }
-    } else if (rv < 0) {
-        error_report_err(local_err);
+    if (!oc || !object_class_dynamic_cast(oc, TYPE_AUDIO_BACKEND)) {
+        return NULL;
     }
-    return NULL;
+
+    return AUDIO_BACKEND_CLASS(oc);
 }
 
 static AudioBackend *default_audio_be;
@@ -1763,7 +1744,7 @@ static const VMStateDescription vmstate_audio = {
 void audio_create_default_audiodevs(void)
 {
     for (int i = 0; audio_prio_list[i]; i++) {
-        if (audio_driver_lookup(audio_prio_list[i])) {
+        if (audio_be_class_by_name(audio_prio_list[i]) != NULL) {
             QDict *dict = qdict_new();
             Audiodev *dev = NULL;
             Visitor *v;
@@ -2128,9 +2109,11 @@ void audio_help(void)
     printf("Available audio drivers:\n");
 
     for (i = 0; i < AUDIODEV_DRIVER__MAX; i++) {
-        audio_driver *driver = audio_driver_lookup(AudiodevDriver_str(i));
-        if (driver) {
-            printf("%s\n", driver->name);
+        const char *name = AudiodevDriver_str(i);
+        AudioBackendClass *be = audio_be_class_by_name(name);
+
+        if (be) {
+            printf("%s\n", name);
         }
     }
 }
diff --git a/audio/dbusaudio.c b/audio/dbusaudio.c
index 9b25269a2d9..2e76d650df1 100644
--- a/audio/dbusaudio.c
+++ b/audio/dbusaudio.c
@@ -738,7 +738,6 @@ static const TypeInfo audio_dbus_info = {
 
 static void register_audio_dbus(void)
 {
-    audio_driver_register(&dbus_audio_driver);
     type_register_static(&audio_dbus_info);
 }
 type_init(register_audio_dbus);
diff --git a/audio/dsoundaudio.c b/audio/dsoundaudio.c
index f1902e55262..3de6a3dee9c 100644
--- a/audio/dsoundaudio.c
+++ b/audio/dsoundaudio.c
@@ -720,7 +720,6 @@ static const TypeInfo audio_dsound_info = {
 
 static void register_audio_dsound(void)
 {
-    audio_driver_register(&dsound_audio_driver);
     type_register_static(&audio_dsound_info);
 }
 type_init(register_audio_dsound);
diff --git a/audio/jackaudio.c b/audio/jackaudio.c
index 48a466ed532..dc86724d28f 100644
--- a/audio/jackaudio.c
+++ b/audio/jackaudio.c
@@ -718,7 +718,6 @@ static const TypeInfo audio_jack_info = {
 static void register_audio_jack(void)
 {
     qemu_mutex_init(&qjack_shutdown_lock);
-    audio_driver_register(&jack_driver);
     type_register_static(&audio_jack_info);
 #if !defined(WIN32) && defined(CONFIG_PTHREAD_SETNAME_NP_W_TID)
     jack_set_thread_creator(qjack_thread_creator);
diff --git a/audio/noaudio.c b/audio/noaudio.c
index e6e8bfd3323..fe649523e88 100644
--- a/audio/noaudio.c
+++ b/audio/noaudio.c
@@ -164,7 +164,6 @@ static const TypeInfo audio_none_info = {
 
 static void register_audio_none(void)
 {
-    audio_driver_register(&no_audio_driver);
     type_register_static(&audio_none_info);
 }
 type_init(register_audio_none);
diff --git a/audio/ossaudio.c b/audio/ossaudio.c
index eb98cc62e9c..013958e1344 100644
--- a/audio/ossaudio.c
+++ b/audio/ossaudio.c
@@ -798,7 +798,6 @@ static const TypeInfo audio_oss_info = {
 
 static void register_audio_oss(void)
 {
-    audio_driver_register(&oss_audio_driver);
     type_register_static(&audio_oss_info);
 }
 type_init(register_audio_oss);
diff --git a/audio/paaudio.c b/audio/paaudio.c
index cf67a9f7593..941f75f25e8 100644
--- a/audio/paaudio.c
+++ b/audio/paaudio.c
@@ -957,7 +957,6 @@ static const TypeInfo audio_pa_info = {
 
 static void register_audio_pa(void)
 {
-    audio_driver_register(&pa_audio_driver);
     type_register_static(&audio_pa_info);
 }
 type_init(register_audio_pa);
diff --git a/audio/pwaudio.c b/audio/pwaudio.c
index 3c2fbccaea4..ed48a9754fe 100644
--- a/audio/pwaudio.c
+++ b/audio/pwaudio.c
@@ -874,7 +874,6 @@ static const TypeInfo audio_pw_info = {
 static void
 register_audio_pw(void)
 {
-    audio_driver_register(&pw_audio_driver);
     type_register_static(&audio_pw_info);
 }
 
diff --git a/audio/sdlaudio.c b/audio/sdlaudio.c
index cc05c1d4531..1a5e3f8a969 100644
--- a/audio/sdlaudio.c
+++ b/audio/sdlaudio.c
@@ -517,7 +517,6 @@ static const TypeInfo audio_sdl_info = {
 
 static void register_audio_sdl(void)
 {
-    audio_driver_register(&sdl_audio_driver);
     type_register_static(&audio_sdl_info);
 }
 type_init(register_audio_sdl);
diff --git a/audio/sndioaudio.c b/audio/sndioaudio.c
index 6a3d93efd51..2fa519e3eab 100644
--- a/audio/sndioaudio.c
+++ b/audio/sndioaudio.c
@@ -581,7 +581,6 @@ static const TypeInfo audio_sndio_info = {
 
 static void register_audio_sndio(void)
 {
-    audio_driver_register(&sndio_audio_driver);
     type_register_static(&audio_sndio_info);
 }
 
diff --git a/audio/spiceaudio.c b/audio/spiceaudio.c
index bfa249b18c4..db9158284ce 100644
--- a/audio/spiceaudio.c
+++ b/audio/spiceaudio.c
@@ -351,7 +351,6 @@ static const TypeInfo audio_spice_info = {
 
 static void register_audio_spice(void)
 {
-    audio_driver_register(&spice_audio_driver);
     type_register_static(&audio_spice_info);
 }
 type_init(register_audio_spice);
diff --git a/audio/wavaudio.c b/audio/wavaudio.c
index 480da5048fa..50b0fb93936 100644
--- a/audio/wavaudio.c
+++ b/audio/wavaudio.c
@@ -240,7 +240,6 @@ static const TypeInfo audio_wav_info = {
 
 static void register_audio_wav(void)
 {
-    audio_driver_register(&wav_audio_driver);
     type_register_static(&audio_wav_info);
 }
 type_init(register_audio_wav);
diff --git a/audio/coreaudio.m b/audio/coreaudio.m
index 882e47f8c25..710ef0fe6ba 100644
--- a/audio/coreaudio.m
+++ b/audio/coreaudio.m
@@ -699,7 +699,6 @@ static void coreaudio_audio_fini (void *opaque)
 
 static void register_audio_coreaudio(void)
 {
-    audio_driver_register(&coreaudio_audio_driver);
     type_register_static(&audio_coreaudio_info);
 }
 type_init(register_audio_coreaudio);
-- 
2.52.0