220 26227 article Path: news.gmane.org!not-for-mail From: Ron Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Any interest to adding audio support to the std library? Date: Thu, 9 Jun 2016 20:05:08 -0700 (PDT) Lines: 117 Approved: news@gmane.org Message-ID: References: <5751B06A.4080501@mail1.stofanet.dk> <5290948.va25uYNizX@tjmaciei-mobl1> <1580229.cHEgQxCuA1@tjmaciei-mobl1> <62b7649a-5de5-4330-9bac-708375d36e2c@isocpp.org> <3c0fde91-671d-4751-955d-7b04cfa120bc@isocpp.org> <4922d8b8-7909-44a2-a24f-8dcf4090911f@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_164_1362698527.1465527908885" X-Trace: ger.gmane.org 1465527912 573 80.91.229.3 (10 Jun 2016 03:05:12 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 10 Jun 2016 03:05:12 +0000 (UTC) Cc: alexander.zywicki@gmail.com, ross.bencina@gmail.com To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBDO2TPGE4QNBBZO45C5AKGQE2744IUY@isocpp.org Fri Jun 10 05:05:12 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-it0-f70.google.com ([209.85.214.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1bBCkx-00026Y-Ik for gclcip-std-proposals@m.gmane.org; Fri, 10 Jun 2016 05:05:11 +0200 Original-Received: by mail-it0-f70.google.com with SMTP id b126sf96313439ite.3 for ; Thu, 09 Jun 2016 20:05:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:x-original-sender:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=M/oT2vePQ7m8rgcmm88RntvPFQB41eBvyVBdatb974U=; b=v8H4egeDZ3rUaU2ZACUjhOgXxpXPzwoxNwQika2nRHK0L6hF3KxxXfpxqvrW3GT/RQ LhVQy8v54pZFTTgSyoFZYphAGPd8yKPeaiEwDz0gLioVW70UaYxj+I6kKZ5z0GPncoDP FKNKHn2f+voTzBpKUTAYUSdFvYdn+OHTzutMj/aVfdA4LCJTofb/QcwwHdMB1Vc7Eocr 9e4x7NRun5N3aW5hUtSLUjkt8zt5y7vrrMqg/nYx5WnMADF+Noh7JNLMG8vjwQ3SF7b5 8afQPHmRDMMsB9EphfDRy+R24upzJo7Krhv2t/E+me/u4Teq6tarDEviiBj6qRWkiyqa Go6A== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:x-original-sender:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=M/oT2vePQ7m8rgcmm88RntvPFQB41eBvyVBdatb974U=; b=K9Ora/E0ZLsrZFx30AaQ00hLZRDpY1Ua20DTx4LfLMKMS7PHYDVEcjZSaAnfiZC2DP X97X6ghJNQ8qB9PSexxhC9n5CgUQIxvZjOqapxyJiMHpRAjegoWVTePCXt1Q8RcYnDSf XhrRFFZ+nik9GMFDpmTj/Gs+BePI7B+OP1uxhXG7VI/WT47SfB4/xCedZ9aV9BtYo7qU dD8ffERNolWKgTZ4FACcrgdsjcQadWSD8EHG7SR1HKXBvY6wqLRwf1dOKbwr9uVC1wgi xbMrVv4PUq3olZs2m66PCNiLOd7KNJfO8kV72sCLl+M5hNw0U09//Lze/uC54UlCVNqv KYzg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:cc:message-id:in-reply-to :references:subject:mime-version:x-original-sender:reply-to :precedence:mailing-list:list-id:x-spam-checked-in-group:list-post :list-help:list-archive:list-subscribe:list-unsubscribe; bh=M/oT2vePQ7m8rgcmm88RntvPFQB41eBvyVBdatb974U=; b=Lw+s/NVWcvN9yb41Z8IkN176wne/+Jux68MekIvXfuW1brDvrb6Y5kX3l9hflnleJ7 Iu4gXwYByFuny6JewwinBIjiKZlLFpCUdSJqUEL/u3leK7BrcpTKXPiy9v02w0FR8cDG nzpcdse16yKQjwcE/xfUc3pcPt15km++kYEzhtHaUZUGb1y9WUmGDGCdgIcSPheMUPj7 1moxTdNqwHgttq/gSb9qNfWbitBHmX/FQKZXC/IWH5CdwxtC7t8IwL73i2jejBuQmCzL 9aoXVzY3RQ2+/G02Kpwm7Izm16Rspqsi3rGV5Yjyq1ZyEmqsZwf/nRuvwyv7xYmZ3iwD 9tKw== X-Gm-Message-State: ALyK8tIBBJMwdML1Ms64zQma/nRLUK8ay3VhwFimyOA0QEx9JyVI3j22fJPHsUgKdgypzA== X-Received: by 10.36.66.209 with SMTP id i200mr243410itb.13.1465527910543; Thu, 09 Jun 2016 20:05:10 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.142.216 with SMTP id q207ls657708iod.72.gmail; Thu, 09 Jun 2016 20:05:09 -0700 (PDT) X-Received: by 10.36.40.146 with SMTP id h140mr613805ith.1.1465527909537; Thu, 09 Jun 2016 20:05:09 -0700 (PDT) In-Reply-To: X-Original-Sender: rsn10100@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:26227 Archived-At: ------=_Part_164_1362698527.1465527908885 Content-Type: multipart/alternative; boundary="----=_Part_165_936678792.1465527908885" ------=_Part_165_936678792.1465527908885 Content-Type: text/plain; charset=UTF-8 On Thursday, June 9, 2016 at 7:26:37 PM UTC-7, alexande...@gmail.com wrote: > > Do you have any suggestions as far as an explicit notion of time should be > in this context? > As a suggestion, something I usually use is a start and end to the buffer and the rate of the buffer. Basically a class that has a value equal to the start frame of the given buffer, a value equal to the end frame of the buffer (or start of next frame) and a value equal to the frame rate. So you can derive a real for each, like start frames over frame rate and end frame over frame rate. From that you can get the seconds as a double or long double. class frame_ticks // or some name that better describes this... { uint64_t fstart; uint64_t fend; uint64_t frate; // ... }; Allowing the start value to be set or reset on starting or stopping record/playback is another feature that some might need here. And I don't recommend eliminating the rate portion from this class since it could lead to trouble where people are making assumptions they shouldn't, best to have them together. Also, I would not add other data to this class since it could be re-used elsewhere as is. Other properties of a buffer can be defined in another class/structure, but again this is just a suggestion... -- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an email to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/f5465abe-f7e5-45c5-aa0b-92d5727bbfa6%40isocpp.org. ------=_Part_165_936678792.1465527908885 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

On Thursday, June 9, 2016 at 7:26:37 PM UTC-7, alexand= e...@gmail.com wrote:
Do you have any suggestions as far as an explicit notion of time s= hould be in this context?

As a suggestion, somethin= g I usually use is a start and end to the buffer and the rate of the buffer= .. =C2=A0Basically a class that has a value equal to the start frame of the = given buffer, a value equal to the end frame of the buffer (or start of nex= t frame) and a value equal to the frame rate. =C2=A0So you can derive a rea= l for each, like start frames over frame rate and end frame over frame rate= .. =C2=A0From that you can get the seconds as a double or long double.

class frame_ticks =C2=A0// or some name that better describes thi= s...
{
=C2=A0 =C2=A0 uin= t64_t fstart;
=C2= =A0 =C2=A0 uint64_t fend;
=C2=A0 =C2=A0 uint64_t frate;
=C2=A0 =C2=A0 // ...
};

Allowing the start v= alue to be set or reset on starting or stopping record/playback is another = feature that some might need here. =C2=A0And I don't recommend eliminatin= g the rate portion from this class since it could lead to trouble where peo= ple are making assumptions they shouldn't, best to have them together.<= /span>

Also, I would not add other data to this class since i= t could be re-used elsewhere as is. =C2=A0Other properties of a buffer can = be defined in another class/structure, but again this is just a suggestion.= ...

--
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