From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6A3C5C433EF for ; Fri, 14 Jan 2022 07:29:39 +0000 (UTC) Received: from localhost ([::1]:50434 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1n8H1m-0005un-AO for qemu-devel@archiver.kernel.org; Fri, 14 Jan 2022 02:29:38 -0500 Received: from eggs.gnu.org ([209.51.188.92]:50380) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n8GUG-0007We-D4 for qemu-devel@nongnu.org; Fri, 14 Jan 2022 01:55:02 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:49189) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1n8GUE-0007Sc-PO for qemu-devel@nongnu.org; Fri, 14 Jan 2022 01:55:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1642143298; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=E2aP4LCS1zwAwH3RWdjldRbWxxjT6RN5o/mJnGtszRw=; b=GR6DLltmSaz0iw3pxJi1EVFbOtJQ/4Kcgv33/s7Nwf1UOdoRsXx/zyme/AgTR/bVT1X7Uo 7vx8nDqAGQP/9rbnk0Nnlwn9oIjYWunDHXIiG+Z3Q1//ZmaYN24cBJUR8nFyUmFJICx3ZZ K+29hkBXss1zUeGpLdSpSezmYUnIZmw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-530-NfDg6pwfN3-bip7H8Gthng-1; Fri, 14 Jan 2022 01:54:54 -0500 X-MC-Unique: NfDg6pwfN3-bip7H8Gthng-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 850EA1023F59; Fri, 14 Jan 2022 06:54:53 +0000 (UTC) Received: from sirius.home.kraxel.org (unknown [10.39.193.24]) by smtp.corp.redhat.com (Postfix) with ESMTPS id AC16510589D8; Fri, 14 Jan 2022 06:54:42 +0000 (UTC) Received: by sirius.home.kraxel.org (Postfix, from userid 1000) id 9D4B8180063C; Fri, 14 Jan 2022 07:53:26 +0100 (CET) From: Gerd Hoffmann To: qemu-devel@nongnu.org Subject: [PULL 05/20] dsoundaudio: fix crackling audio recordings Date: Fri, 14 Jan 2022 07:53:11 +0100 Message-Id: <20220114065326.782420-6-kraxel@redhat.com> In-Reply-To: <20220114065326.782420-1-kraxel@redhat.com> References: <20220114065326.782420-1-kraxel@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kraxel@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=170.10.133.124; envelope-from=kraxel@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -33 X-Spam_score: -3.4 X-Spam_bar: --- X-Spam_report: (-3.4 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.595, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Aleksandar Rikalo , "Michael S. Tsirkin" , =?UTF-8?q?Volker=20R=C3=BCmelin?= , Christian Schoenebeck , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Markus Armbruster , =?UTF-8?q?Herv=C3=A9=20Poussineau?= , Gerd Hoffmann , Paolo Bonzini , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Eric Blake Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Volker Rümelin Audio recordings with the DirectSound backend don't sound right. A look a the Microsoft online documentation tells us why. >From the DirectSound Programming Guide, Capture Buffer Information: 'You can safely copy data from the buffer only up to the read cursor.' Change the code to read up to the read cursor instead of the capture cursor. Signed-off-by: Volker Rümelin Message-Id: <20211226154017.6067-2-vr_qemu@t-online.de> Signed-off-by: Gerd Hoffmann --- audio/dsoundaudio.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/audio/dsoundaudio.c b/audio/dsoundaudio.c index cfc79c129eee..3dd2c4d4a60b 100644 --- a/audio/dsoundaudio.c +++ b/audio/dsoundaudio.c @@ -536,13 +536,12 @@ static void *dsound_get_buffer_in(HWVoiceIn *hw, size_t *size) DSoundVoiceIn *ds = (DSoundVoiceIn *) hw; LPDIRECTSOUNDCAPTUREBUFFER dscb = ds->dsound_capture_buffer; HRESULT hr; - DWORD cpos, rpos, act_size; + DWORD rpos, act_size; size_t req_size; int err; void *ret; - hr = IDirectSoundCaptureBuffer_GetCurrentPosition( - dscb, &cpos, ds->first_time ? &rpos : NULL); + hr = IDirectSoundCaptureBuffer_GetCurrentPosition(dscb, NULL, &rpos); if (FAILED(hr)) { dsound_logerr(hr, "Could not get capture buffer position\n"); *size = 0; @@ -554,7 +553,7 @@ static void *dsound_get_buffer_in(HWVoiceIn *hw, size_t *size) ds->first_time = false; } - req_size = audio_ring_dist(cpos, hw->pos_emul, hw->size_emul); + req_size = audio_ring_dist(rpos, hw->pos_emul, hw->size_emul); req_size = MIN(*size, MIN(req_size, hw->size_emul - hw->pos_emul)); if (req_size == 0) { -- 2.34.1