From patchwork Wed Jul 12 23:37:04 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Niedermayer X-Patchwork-Id: 42626 Delivered-To: ffmpegpatchwork2@gmail.com Received: by 2002:a05:6a20:6da1:b0:131:a7d0:bc6d with SMTP id gl33csp2536552pzb; Wed, 12 Jul 2023 16:38:11 -0700 (PDT) X-Google-Smtp-Source: APBJJlGt2hwsxUi1m3hblZsh2Wy2cZONK5D8en9Z7pDYngvafOY0aS8dvSjssn8osDH6TyZoYnIS X-Received: by 2002:a17:906:f2ca:b0:96f:d345:d0f7 with SMTP id gz10-20020a170906f2ca00b0096fd345d0f7mr16625198ejb.62.1689205091028; Wed, 12 Jul 2023 16:38:11 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1689205091; cv=none; d=google.com; s=arc-20160816; b=GMWsBkn/5uf8fbiS2DfZ/5UR68vL3066nlv3hDIt9mgXlk8ZuocJFXR+aQvwfiXOFN sWOsPlnQae5jJGFbVIz9fJFm+xhACeCkLlocqKUbECFVzYMa5KSCbeb53wLTi+93rusr /i6jTi5Vqo9G7PfpgEJqlln1j8DVyMwl4GQP88tSAB0FuUUzXw2C7v4gSgUDBbFaMpDJ 4UqpICKUHqfolDVqusri6eaPoYx6abGmXvRZdbWP3bKO95mER+/t0sjNoH5h6Ww32gFn EtJXnaInif+i5zp+4K49HJ167LvBVFTL2YFDTxui6dr8MTmVF9bcMgBd+eL4f7VF35b5 dMHg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:reply-to:list-subscribe :list-help:list-post:list-archive:list-unsubscribe:list-id :precedence:subject:mime-version:references:in-reply-to:message-id :date:to:from:delivered-to; bh=Sw5frv/KRV1CJ82IvYuwJUcAHk+F6vz3uBeXza3tDmU=; fh=YYwLYmpaV0Fpw/rxmSKNRLS2XzDkAlGbHATiKOPtZrY=; b=StvratNKzMykKEBBquhJQaGeI6NFa4peUOKEUoNN1Amvgbp5pec4KwmhKhpHpethdM c7hLzCFls6LF0gAF8sTwiidqgSx45nrHHATpllijubBG4UHppFka6QJyIRS74Arrw/3q Fo0ooWdR5SUomw1u9VFLLkSZA+doxexNx9VeSlVAzEZFi+NFFsLUycYh0gwzXKg77RHo hAu2dMdjAhA8dAb1tXX6Pa8BUFOvok8gM7s5IhjEhfoX7cZ7aLm77mvzwG2lOTs71B+T H2BM8xTA1j9zLmp0X96lM0yZz+HR2s8BY+4SOxzENn/vX1wmdJGTkRsSEzJR+dunLBU2 E6Ww== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Return-Path: Received: from ffbox0-bg.mplayerhq.hu (ffbox0-bg.ffmpeg.org. [79.124.17.100]) by mx.google.com with ESMTP id h2-20020a1709067cc200b00992a9b11cf2si5439318ejp.787.2023.07.12.16.38.10; Wed, 12 Jul 2023 16:38:11 -0700 (PDT) Received-SPF: pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) client-ip=79.124.17.100; Authentication-Results: mx.google.com; spf=pass (google.com: domain of ffmpeg-devel-bounces@ffmpeg.org designates 79.124.17.100 as permitted sender) smtp.mailfrom=ffmpeg-devel-bounces@ffmpeg.org Received: from [127.0.1.1] (localhost [127.0.0.1]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTP id 03CF168C653; Thu, 13 Jul 2023 02:37:23 +0300 (EEST) X-Original-To: ffmpeg-devel@ffmpeg.org Delivered-To: ffmpeg-devel@ffmpeg.org Received: from relay1-d.mail.gandi.net (relay1-d.mail.gandi.net [217.70.183.193]) by ffbox0-bg.mplayerhq.hu (Postfix) with ESMTPS id E9CC468C62F for ; Thu, 13 Jul 2023 02:37:19 +0300 (EEST) Received: by mail.gandi.net (Postfix) with ESMTPSA id E6867240002 for ; Wed, 12 Jul 2023 23:37:18 +0000 (UTC) From: Michael Niedermayer To: FFmpeg development discussions and patches Date: Thu, 13 Jul 2023 01:37:04 +0200 Message-Id: <20230712233706.449054-12-michael@niedermayer.cc> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20230712233706.449054-1-michael@niedermayer.cc> References: <20230712233706.449054-1-michael@niedermayer.cc> MIME-Version: 1.0 X-GND-Sasl: michael@niedermayer.cc Subject: [FFmpeg-devel] [PATCH 12/14] avradio/sdrdemux: Reduce FM audio bandwidth down toward reality X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: sQ33UZdB6MU6 This avoids useless computations Signed-off-by: Michael Niedermayer --- libavradio/sdrdemux.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libavradio/sdrdemux.c b/libavradio/sdrdemux.c index c0ca420c84..54d7622809 100644 --- a/libavradio/sdrdemux.c +++ b/libavradio/sdrdemux.c @@ -1519,9 +1519,9 @@ int ff_sdr_common_init(AVFormatContext *s) av_log(s, AV_LOG_INFO, "Block size %d\n", sdr->block_size); sdr->block_time = sdr->block_size / (double)sdr->sdr_sample_rate; - sdr->am_bandwidth = 6 * 1000; - sdr->fm_bandwidth = 180 * 1000; - sdr->fm_bandwidth_p2 = 18 * 1000; + sdr->am_bandwidth = 6 * 1000; + sdr->fm_bandwidth = 180 * 1000; + sdr->fm_bandwidth_p2 = 16.5 * 1000; // Officially Stereo Broadcast FM has 15khz audio bandwidth sdr->am_block_size = find_block_size(sdr, sdr->am_bandwidth); sdr->fm_block_size = find_block_size(sdr, sdr->fm_bandwidth);