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GET /api/patches/2196850/?format=api
{ "id": 2196850, "url": "http://patchwork.ozlabs.org/api/patches/2196850/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260216-audio-v1-48-e676662e4514@redhat.com/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260216-audio-v1-48-e676662e4514@redhat.com>", "list_archive_url": null, "date": "2026-02-16T11:15:37", "name": "[48/85] audio/pa: convert to QOM lifecycle methods", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ce0604f066de1619e19424c8750cad34e78500ee", "submitter": { "id": 66774, "url": "http://patchwork.ozlabs.org/api/people/66774/?format=api", "name": "Marc-André Lureau", "email": "marcandre.lureau@redhat.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260216-audio-v1-48-e676662e4514@redhat.com/mbox/", "series": [ { "id": 492294, "url": "http://patchwork.ozlabs.org/api/series/492294/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=492294", "date": "2026-02-16T11:14:52", "name": "audio: cleanups & add a manual test", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/492294/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2196850/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2196850/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=facClmjo;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Mon, 16 Feb 2026 06:18:02 -0500", "from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com\n (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by\n relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3,\n cipher=TLS_AES_256_GCM_SHA384) id us-mta-453-CigqbbDnNLmJLjBr1isJDQ-1; Mon,\n 16 Feb 2026 06:17:54 -0500", "from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com\n (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest\n SHA256)\n (No client certificate requested)\n by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS\n id 00C4618003F5; Mon, 16 Feb 2026 11:17:53 +0000 (UTC)", "from localhost (unknown [10.45.242.26])\n by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP\n id 264FD1955F43; Mon, 16 Feb 2026 11:17:51 +0000 (UTC)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com;\n s=mimecast20190719; t=1771240678;\n h=from:from:reply-to:subject:subject:date:date:message-id:message-id:\n to:to:cc:cc:mime-version:mime-version:content-type:content-type:\n content-transfer-encoding:content-transfer-encoding:\n in-reply-to:in-reply-to:references:references;\n bh=wllvUW1z4j78fEcJ0Ch9mn6nwgUd9WiNw4vpX1q0pPQ=;\n b=facClmjo+nyiNm/7cNadUuJtjyhVwr8NLWTinDqV67jEig4JdkeV6yRomfOhpgf9GSI8xw\n 70QlxEs0qHxCfUJx+ZiNTDPw4uJHSC3/AAv2f9ctRSXDQX+9zBvpcEzxcklnmyzwKgz9+9\n wx8KFQtXp7eGQWVJAPVNHx/dLSNk7jM=", "X-MC-Unique": "CigqbbDnNLmJLjBr1isJDQ-1", "X-Mimecast-MFC-AGG-ID": "CigqbbDnNLmJLjBr1isJDQ_1771240673", "From": "=?utf-8?q?Marc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>", "Date": "Mon, 16 Feb 2026 12:15:37 +0100", "Subject": "[PATCH 48/85] audio/pa: convert to QOM lifecycle methods", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "8bit", "Message-Id": "<20260216-audio-v1-48-e676662e4514@redhat.com>", "References": "<20260216-audio-v1-0-e676662e4514@redhat.com>", "In-Reply-To": "<20260216-audio-v1-0-e676662e4514@redhat.com>", "To": "qemu-devel@nongnu.org", "Cc": "Gerd Hoffmann <kraxel@redhat.com>, Eduardo Habkost <eduardo@habkost.net>,\n Paolo Bonzini <pbonzini@redhat.com>,\n =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= <berrange@redhat.com>, =?utf-8?q?Phil?=\n\t=?utf-8?q?ippe_Mathieu-Daud=C3=A9?= <philmd@linaro.org>,\n John Snow <jsnow@redhat.com>, Cleber Rosa <crosa@redhat.com>,\n Christian Schoenebeck <qemu_oss@crudebyte.com>,\n Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>,\n Thomas Huth <huth@tuxfamily.org>, Alexandre Ratchov <alex@caoua.org>,\n\t=?utf-8?q?Alex_Benn=C3=A9e?= <alex.bennee@linaro.org>,\n Laurent Vivier <laurent@vivier.eu>, \"Michael S. Tsirkin\" <mst@redhat.com>,\n Manos Pitsidianakis <manos.pitsidianakis@linaro.org>,\n Alistair Francis <alistair@alistair23.me>,\n \"Edgar E. Iglesias\" <edgar.iglesias@gmail.com>,\n Peter Maydell <peter.maydell@linaro.org>, qemu-arm@nongnu.org, =?utf-8?q?M?=\n\t=?utf-8?q?arc-Andr=C3=A9_Lureau?= <marcandre.lureau@redhat.com>,\n Mark Cave-Ayland <mark.caveayland@nutanix.com>", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=8857;\n i=marcandre.lureau@redhat.com; h=from:subject:message-id;\n bh=XClO4Ihg9Kzu0GeOaZiAff+2TMQWcfkYzMlWRAVRIxg=;\n b=owEBbQKS/ZANAwAKAdro4Ql1lpzlAcsmYgBpkvxQD8gBVAdWOFDlxdmV0Viobi9nhH6J48XL+\n SoDga9yC3GJAjMEAAEKAB0WIQSHqb2TP4fGBtJ29i3a6OEJdZac5QUCaZL8UAAKCRDa6OEJdZac\n 5WHVD/sFcKK+M2UThK+hpUkwcMwGYfhp/GFYmMUBEZjf2KaRD1tHV+V30HkqkRRXX3msoePGl5r\n Rz1sf/B537bywKAuGP2PRwhTT83XEfjmjZJwh2WNhdfnc5yxvSuk83xb8egMaI7nfutqwwaa8+4\n fDIoke4Ojbo8oT3ZOxmKHfMVrPGoMQXvV5Z7mAYaVhc0PY0ZnmBH4+WMl9Nlzc/r5dCMQL+6LGz\n IyyforAC5gk6wiUUnRTS15IGRWswaBcGzRg26oUQ7tGHVGVD9vuzdmPf6xbzvoxzHvkEibaSwnc\n ZqJ6iJflULwFNOdCz5lpf0bcN0kwrF2X87plpbMJs8PTaNz2ZpRLvcPkkuy0UXIjX5hp18ONVM4\n nB1NG7gNyGxQOmWYYZFM+ARgNe2Nnkb+PqJK7ewOAdzMIiw1s8XoMATQIAruWr3o1lszuevzuw1\n nnOxaYZTeVrr/0fbgnB1hXsgN1dpubzMl6LR5n9Ts4vYN8GZNOMdlnvCUpsC22CLLyFomDPNUD2\n yRylniDJCbuppb3y1AKRuvnG4DpTVyNFrzAqO+mcxE4XXFaX9y3eAsdW/GlN0x5bkVhEPdc3YLE\n KkNXzrACgYIyw0BMz0Q44qC1ekYpbhrVt1oAeS+S8dgTgHwca2GoLY4Q6RnSR+4+dyza7QA7+eO\n OdgvEuRDTJVbg+w==", "X-Developer-Key": "i=marcandre.lureau@redhat.com; a=openpgp;\n fpr=87A9BD933F87C606D276F62DDAE8E10975969CE5", "X-Scanned-By": "MIMEDefang 3.0 on 10.30.177.17", "Received-SPF": "pass client-ip=170.10.129.124;\n envelope-from=marcandre.lureau@redhat.com;\n helo=us-smtp-delivery-124.mimecast.com", "X-Spam_score_int": "-20", "X-Spam_score": "-2.1", "X-Spam_bar": "--", "X-Spam_report": "(-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001,\n DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001,\n RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001,\n SPF_HELO_PASS=-0.001,\n SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>", "List-Archive": "<https://lists.nongnu.org/archive/html/qemu-devel>", "List-Post": "<mailto:qemu-devel@nongnu.org>", "List-Help": "<mailto:qemu-devel-request@nongnu.org?subject=help>", "List-Subscribe": "<https://lists.nongnu.org/mailman/listinfo/qemu-devel>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "Migrate the PulseAudio backend from the legacy driver init/fini\ncallbacks to proper QOM realize and finalize methods.\n\nThe paaudio struct fields are now embedded directly in the AudioPa\nQOM object instead of being allocated separately as drv_opaque. This\nallows accessing the backend state through proper QOM type casting\nwith AUDIO_PA() rather than casting drv_opaque pointers.\n\nThe PulseAudio connection is now managed through the QOM lifecycle,\nwith the connection reference acquired in realize and released in\nfinalize.\n\nSigned-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>\nReviewed-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>\n---\n audio/paaudio.c | 109 +++++++++++++++++++++++++++++---------------------------\n 1 file changed, 57 insertions(+), 52 deletions(-)", "diff": "diff --git a/audio/paaudio.c b/audio/paaudio.c\nindex 331da4f2ed6..97e6c0d1794 100644\n--- a/audio/paaudio.c\n+++ b/audio/paaudio.c\n@@ -14,19 +14,10 @@\n #define TYPE_AUDIO_PA \"audio-pa\"\n OBJECT_DECLARE_SIMPLE_TYPE(AudioPa, AUDIO_PA)\n \n-struct AudioPa {\n- AudioMixengBackend parent_obj;\n-};\n+static AudioBackendClass *audio_pa_parent_class;\n \n static struct audio_driver pa_audio_driver;\n \n-static void audio_pa_class_init(ObjectClass *klass, const void *data)\n-{\n- AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_CLASS(klass);\n-\n- k->driver = &pa_audio_driver;\n-}\n-\n typedef struct PAConnection {\n char *server;\n int refcount;\n@@ -36,18 +27,19 @@ typedef struct PAConnection {\n pa_context *context;\n } PAConnection;\n \n-static QTAILQ_HEAD(PAConnectionHead, PAConnection) pa_conns =\n- QTAILQ_HEAD_INITIALIZER(pa_conns);\n+struct AudioPa {\n+ AudioMixengBackend parent_obj;\n \n-typedef struct {\n- Audiodev *dev;\n PAConnection *conn;\n-} paaudio;\n+};\n+\n+static QTAILQ_HEAD(PAConnectionHead, PAConnection) pa_conns =\n+ QTAILQ_HEAD_INITIALIZER(pa_conns);\n \n typedef struct {\n HWVoiceOut hw;\n pa_stream *stream;\n- paaudio *g;\n+ AudioPa *g;\n } PAVoiceOut;\n \n typedef struct {\n@@ -55,7 +47,7 @@ typedef struct {\n pa_stream *stream;\n const void *read_data;\n size_t read_length;\n- paaudio *g;\n+ AudioPa *g;\n } PAVoiceIn;\n \n static void qpa_conn_fini(PAConnection *c);\n@@ -529,23 +521,25 @@ fail:\n static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as,\n void *drv_opaque)\n {\n+ AudioMixengBackend *amb = hw->s;\n+ AudioPa *apa = AUDIO_PA(amb);\n int error;\n pa_sample_spec ss;\n pa_buffer_attr ba;\n struct audsettings obt_as = *as;\n PAVoiceOut *pa = (PAVoiceOut *) hw;\n- paaudio *g = pa->g = drv_opaque;\n- AudiodevPaOptions *popts = &g->dev->u.pa;\n+ AudiodevPaOptions *popts = &amb->dev->u.pa;\n AudiodevPaPerDirectionOptions *ppdo = popts->out;\n- PAConnection *c = g->conn;\n+ PAConnection *c = apa->conn;\n \n+ pa->g = apa;\n ss.format = audfmt_to_pa (as->fmt, as->endianness);\n ss.channels = as->nchannels;\n ss.rate = as->freq;\n \n ba.tlength = pa_usec_to_bytes(ppdo->latency, &ss);\n ba.minreq = pa_usec_to_bytes(MIN(ppdo->latency >> 2,\n- (g->dev->timer_period >> 2) * 3), &ss);\n+ (amb->dev->timer_period >> 2) * 3), &ss);\n ba.maxlength = -1;\n ba.prebuf = -1;\n \n@@ -553,7 +547,7 @@ static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as,\n \n pa->stream = qpa_simple_new (\n c,\n- ppdo->stream_name ?: g->dev->id,\n+ ppdo->stream_name ?: amb->dev->id,\n PA_STREAM_PLAYBACK,\n ppdo->name,\n &ss,\n@@ -578,23 +572,25 @@ static int qpa_init_out(HWVoiceOut *hw, struct audsettings *as,\n \n static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)\n {\n+ AudioMixengBackend *amb = hw->s;\n+ AudioPa *apa = AUDIO_PA(amb);\n int error;\n pa_sample_spec ss;\n pa_buffer_attr ba;\n struct audsettings obt_as = *as;\n PAVoiceIn *pa = (PAVoiceIn *) hw;\n- paaudio *g = pa->g = drv_opaque;\n- AudiodevPaOptions *popts = &g->dev->u.pa;\n+ AudiodevPaOptions *popts = &amb->dev->u.pa;\n AudiodevPaPerDirectionOptions *ppdo = popts->in;\n- PAConnection *c = g->conn;\n+ PAConnection *c = apa->conn;\n \n+ pa->g = apa;\n ss.format = audfmt_to_pa (as->fmt, as->endianness);\n ss.channels = as->nchannels;\n ss.rate = as->freq;\n \n- ba.fragsize = pa_usec_to_bytes((g->dev->timer_period >> 1) * 3, &ss);\n+ ba.fragsize = pa_usec_to_bytes((amb->dev->timer_period >> 1) * 3, &ss);\n ba.maxlength = pa_usec_to_bytes(\n- MAX(ppdo->latency, g->dev->timer_period * 3), &ss);\n+ MAX(ppdo->latency, amb->dev->timer_period * 3), &ss);\n ba.minreq = -1;\n ba.prebuf = -1;\n \n@@ -602,7 +598,7 @@ static int qpa_init_in(HWVoiceIn *hw, struct audsettings *as, void *drv_opaque)\n \n pa->stream = qpa_simple_new (\n c,\n- ppdo->stream_name ?: g->dev->id,\n+ ppdo->stream_name ?: amb->dev->id,\n PA_STREAM_RECORD,\n ppdo->name,\n &ss,\n@@ -834,15 +830,20 @@ fail:\n return NULL;\n }\n \n-static void *qpa_audio_init(Audiodev *dev, Error **errp)\n+static bool\n+audio_pa_realize(AudioBackend *abe, Audiodev *dev, Error **errp)\n {\n- paaudio *g;\n+ AudioPa *apa = AUDIO_PA(abe);\n AudiodevPaOptions *popts = &dev->u.pa;\n const char *server;\n PAConnection *c;\n \n assert(dev->driver == AUDIODEV_DRIVER_PA);\n \n+ if (!audio_pa_parent_class->realize(abe, dev, errp)) {\n+ return false;\n+ }\n+\n if (!popts->server) {\n char pidfile[64];\n char *runtime;\n@@ -851,42 +852,38 @@ static void *qpa_audio_init(Audiodev *dev, Error **errp)\n runtime = getenv(\"XDG_RUNTIME_DIR\");\n if (!runtime) {\n error_setg(errp, \"XDG_RUNTIME_DIR not set\");\n- return NULL;\n+ return false;\n }\n snprintf(pidfile, sizeof(pidfile), \"%s/pulse/pid\", runtime);\n if (stat(pidfile, &st) != 0) {\n error_setg_errno(errp, errno, \"could not stat pidfile %s\", pidfile);\n- return NULL;\n+ return false;\n }\n }\n \n qpa_validate_per_direction_opts(dev, popts->in);\n qpa_validate_per_direction_opts(dev, popts->out);\n \n- g = g_new0(paaudio, 1);\n server = popts->server;\n-\n- g->dev = dev;\n-\n QTAILQ_FOREACH(c, &pa_conns, list) {\n if (server == NULL || c->server == NULL ?\n server == c->server :\n strcmp(server, c->server) == 0) {\n- g->conn = c;\n+ apa->conn = c;\n break;\n }\n }\n- if (!g->conn) {\n- g->conn = qpa_conn_init(server);\n+ if (!apa->conn) {\n+ apa->conn = qpa_conn_init(server);\n }\n- if (!g->conn) {\n- g_free(g);\n+ if (!apa->conn) {\n error_setg(errp, \"could not connect to PulseAudio server\");\n- return NULL;\n+ return false;\n }\n \n- ++g->conn->refcount;\n- return g;\n+ ++apa->conn->refcount;\n+\n+ return true;\n }\n \n static void qpa_conn_fini(PAConnection *c)\n@@ -908,16 +905,14 @@ static void qpa_conn_fini(PAConnection *c)\n g_free(c);\n }\n \n-static void qpa_audio_fini (void *opaque)\n+static void audio_pa_finalize(Object *obj)\n {\n- paaudio *g = opaque;\n- PAConnection *c = g->conn;\n+ AudioPa *apa = AUDIO_PA(obj);\n+ PAConnection *c = apa->conn;\n \n- if (--c->refcount == 0) {\n+ if (c && --c->refcount == 0) {\n qpa_conn_fini(c);\n }\n-\n- g_free(g);\n }\n \n static struct audio_pcm_ops qpa_pcm_ops = {\n@@ -939,8 +934,6 @@ static struct audio_pcm_ops qpa_pcm_ops = {\n \n static struct audio_driver pa_audio_driver = {\n .name = \"pa\",\n- .init = qpa_audio_init,\n- .fini = qpa_audio_fini,\n .pcm_ops = &qpa_pcm_ops,\n .max_voices_out = INT_MAX,\n .max_voices_in = INT_MAX,\n@@ -948,12 +941,24 @@ static struct audio_driver pa_audio_driver = {\n .voice_size_in = sizeof (PAVoiceIn),\n };\n \n+static void audio_pa_class_init(ObjectClass *klass, const void *data)\n+{\n+ AudioBackendClass *b = AUDIO_BACKEND_CLASS(klass);\n+ AudioMixengBackendClass *k = AUDIO_MIXENG_BACKEND_CLASS(klass);\n+\n+ audio_pa_parent_class = AUDIO_BACKEND_CLASS(object_class_get_parent(klass));\n+\n+ b->realize = audio_pa_realize;\n+ k->driver = &pa_audio_driver;\n+}\n+\n static const TypeInfo audio_types[] = {\n {\n .name = TYPE_AUDIO_PA,\n .parent = TYPE_AUDIO_MIXENG_BACKEND,\n .instance_size = sizeof(AudioPa),\n .class_init = audio_pa_class_init,\n+ .instance_finalize = audio_pa_finalize,\n },\n };\n \n", "prefixes": [ "48/85" ] }