From nobody Tue Feb 10 14:32:02 2026 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1586073162; cv=none; d=zohomail.com; s=zohoarc; b=KfsAAp7H7abQTz03cv2MFYnJ3Jioglen5oBMFlViSOHFtyRk0S7DoT8GOvT2m7CP1og5hdj1PKlODh1MXB4l8xzISh2GmcHYovejPQsTJNJzlcMPKNrIrp22INGjyJVlzA7iWy5DgDe9pepMWGehH4yHPYdPPVu38Nk0KY7PYME= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1586073162; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=RNwHOtvdtnQ6RzTcsSS+9LCRVOZTREM/yGv6tdUa95o=; b=VE7LGiyI7WHc3aND1geyzn/bDrGSIUd1x8x48XPbQ+q9X4Azk1Ycm01l0f5bE3CkQ8Mexx6O5BfTLleCmYyIySnOgvjXt1qR7SyOyWpcH9OHzsRhZMsiSxQwpvcTqPXnPL/9gTkzzIyn3VyMNp0NpX7JYWbyOiY/PzmJqwPYuZ0= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1586073162867242.5277151002815; Sun, 5 Apr 2020 00:52:42 -0700 (PDT) Received: from localhost ([::1]:45522 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jL05B-000747-Om for importer@patchew.org; Sun, 05 Apr 2020 03:52:41 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55793) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jL02z-0004rN-UD for qemu-devel@nongnu.org; Sun, 05 Apr 2020 03:50:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1jL02y-0001I3-5a for qemu-devel@nongnu.org; Sun, 05 Apr 2020 03:50:25 -0400 Received: from mailout02.t-online.de ([194.25.134.17]:46672) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1jL02x-0001HS-Vt for qemu-devel@nongnu.org; Sun, 05 Apr 2020 03:50:24 -0400 Received: from fwd06.aul.t-online.de (fwd06.aul.t-online.de [172.20.26.150]) by mailout02.t-online.de (Postfix) with SMTP id 693B941D1EC4; Sun, 5 Apr 2020 09:50:23 +0200 (CEST) Received: from linpower.localnet (EwKzx8ZOZhTlbJzMXcWO21ZKNq9EqU63dWk9DSinWKrfwVQg47qgkUFVUIvMKLqwUi@[93.236.147.242]) by fwd06.t-online.de with (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384 encrypted) esmtp id 1jL02x-4TRWOu0; Sun, 5 Apr 2020 09:50:23 +0200 Received: by linpower.localnet (Postfix, from userid 1000) id 9124D200622; Sun, 5 Apr 2020 09:50:17 +0200 (CEST) From: =?UTF-8?q?Volker=20R=C3=BCmelin?= To: Gerd Hoffmann Subject: [PATCH v2 3/3] dsoundaudio: dsound_get_buffer_in should honor *size Date: Sun, 5 Apr 2020 09:50:17 +0200 Message-Id: <20200405075017.9901-3-vr_qemu@t-online.de> X-Mailer: git-send-email 2.16.4 In-Reply-To: References: MIME-Version: 1.0 X-ID: EwKzx8ZOZhTlbJzMXcWO21ZKNq9EqU63dWk9DSinWKrfwVQg47qgkUFVUIvMKLqwUi X-TOI-MSGID: a0fdab05-3a5b-41cd-9b51-0e05a15a05a2 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 194.25.134.17 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: QEMU , =?UTF-8?q?Zolt=C3=A1n=20K=C5=91v=C3=A1g=C3=B3?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Type: text/plain; charset="utf-8" This patch prevents an underflow of variable samples in function audio_pcm_hw_run_in(). See commit 599eac4e5a "audio: audio_generic_get_buffer_in should honor *size". This time the while loop in audio_pcm_hw_run_in() will terminate nevertheless, because it seems the recording stream in Windows is always rate limited. Signed-off-by: Volker R=C3=BCmelin --- audio/audio.c | 12 +++++------- audio/dsoundaudio.c | 2 +- 2 files changed, 6 insertions(+), 8 deletions(-) diff --git a/audio/audio.c b/audio/audio.c index 9ac9a20c41..7a9e680355 100644 --- a/audio/audio.c +++ b/audio/audio.c @@ -1491,15 +1491,13 @@ size_t audio_generic_write(HWVoiceOut *hw, void *bu= f, size_t size) =20 size_t audio_generic_read(HWVoiceIn *hw, void *buf, size_t size) { - size_t src_size, copy_size; - void *src =3D hw->pcm_ops->get_buffer_in(hw, &src_size); - copy_size =3D MIN(size, src_size); + void *src =3D hw->pcm_ops->get_buffer_in(hw, &size); =20 - memcpy(buf, src, copy_size); - hw->pcm_ops->put_buffer_in(hw, src, copy_size); - return copy_size; -} + memcpy(buf, src, size); + hw->pcm_ops->put_buffer_in(hw, src, size); =20 + return size; +} =20 static int audio_driver_init(AudioState *s, struct audio_driver *drv, bool msg, Audiodev *dev) diff --git a/audio/dsoundaudio.c b/audio/dsoundaudio.c index a08d519cae..4cdf19ab67 100644 --- a/audio/dsoundaudio.c +++ b/audio/dsoundaudio.c @@ -540,7 +540,7 @@ static void *dsound_get_buffer_in(HWVoiceIn *hw, size_t= *size) } =20 req_size =3D audio_ring_dist(cpos, hw->pos_emul, hw->size_emul); - req_size =3D MIN(req_size, hw->size_emul - hw->pos_emul); + req_size =3D MIN(*size, MIN(req_size, hw->size_emul - hw->pos_emul)); =20 if (req_size =3D=3D 0) { *size =3D 0; --=20 2.16.4