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Re[2]: [Gnash-dev] Re: Bitwise stream reading performance
From: |
Udo Giacomozzi |
Subject: |
Re[2]: [Gnash-dev] Re: Bitwise stream reading performance |
Date: |
Tue, 28 Aug 2007 11:56:03 +0200 |
Hello strk,
Tuesday, August 28, 2007, 11:46:48 AM, you wrote:
s> I still see it as a facility. The stream will just setup the buffer
s> for the BitsReader, knowing size of each tag..
Ok, yes, whatever, but anyway this is a minor detail at the moment. :)
s> Note that the users which are NOT willing to cache are tipically users
s> that will cache themselves.
You talk about JPEG tag loader for example? It could still use the
already present get_underlying_stream() function, ie. don't care if
they cache or not. Either you use that function or the bit reading
functions for a tag.
"cache" is not really the appropriate term. We just simplify the bit
parsing process by taking advantage of native processor operations
instead of loops and checks.
s> I'm currently preparing work to expand their interfaces to accept a
s> pre-made cache for reading. In that case, the stream (or
s> BitsReader) should provide a pointer to the underlying buffer.
Uhm, not sure I understand what you mean.
Udo
- Re[2]: [Gnash-dev] Re: Bitwise stream reading performance, (continued)
- Re[2]: [Gnash-dev] Re: Bitwise stream reading performance, Udo Giacomozzi, 2007/08/27
- Re: [Gnash-dev] Re: Bitwise stream reading performance, strk, 2007/08/27
- Re: [Gnash-dev] Re: Bitwise stream reading performance, strk, 2007/08/27
- Re: [Gnash-dev] Re: Bitwise stream reading performance, strk, 2007/08/27
- Re[2]: [Gnash-dev] Re: Bitwise stream reading performance, Udo Giacomozzi, 2007/08/27
- Re: [Gnash-dev] Re: Bitwise stream reading performance, strk, 2007/08/27
- Re[2]: [Gnash-dev] Re: Bitwise stream reading performance, Udo Giacomozzi, 2007/08/28
- Re: [Gnash-dev] Re: Bitwise stream reading performance, strk, 2007/08/28
- Re[2]: [Gnash-dev] Re: Bitwise stream reading performance, Udo Giacomozzi, 2007/08/28
- Re: [Gnash-dev] Re: Bitwise stream reading performance, strk, 2007/08/28
- Re[2]: [Gnash-dev] Re: Bitwise stream reading performance,
Udo Giacomozzi <=