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av_probe_input_buffer() so that it can be reused. Here are a few
differences to the original way things were probed:

- maximum probe buffer size can be specified as a parameter.

- offset within the stream to probe from can be specified as a parameter.

- instead of seeking back to the start each time a probe fails, stream
  data is appended to the reallocated buffer. This lowers the amount
  of data read from the stream (there is no repetition) and results in
  fewer closed and reopened streams (when seeking fails).

New attempt after r22296, which was revert in r22315 due to a FATE
failure.

See the thread:
Subject: [FFmpeg-devel] [PATCH] Move av_open_input_file probe loop to its own method
Date: 2010-03-05 03:23:57 GMT

Patch by Micah F. Galizia printf("%s%s@%s.%s", "micah", "galizia", "gmail", "com").

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The init function is only compiled if MMX is enabled, the call
must use the same condition.

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C99 doesn't require EINVAL, only EDOM, EILSEQ, and ERANGE.

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major bump, using an FFmpeg specific error code rather than EDOM,
which has a quite different semantics.

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This moves the DWT functions from snow.c and dsputil.c to a file of
their own.  A new struct, DWTContext, holds the function pointers
previously part of DSPContext.

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huge processing and memory usage overhead for avi files with raw PCM audio.


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The symbol is currently unused, AVERROR(ENOENT) must be used instead.

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AVERROR(ENOMEM) must be used instead, and there are no occurrences of
AVERROR_ENOMEM in the FFmpeg basecode so it can be safely dropped.

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AVERROR_EIO for deletion at the next major bump.

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avctx->get_buffer() in case of error, rather than AVERROR_UNKNOWN
which is deprecated, and mark AVERROR_UNKNOWN for deletion at the next
major bump.

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picref.

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addition of the AVFilterPicRef.pos field.

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again from the filterchain and pass it back to output_picture2().

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position information, as stored in the pkt.pos, through the
filterchain.

Note that the pos field is added *non* at the end of the
AVFilterPicRef struct, thus breaking ABI compatibility, which is
allowed as the API is still considered non-stable.

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choosen between 8 and 32 when the supplied parameter is the string
"random".

This is useful for testing the slice support, but it is not supposed
to be used by the user for other purposes and this interface may
change in the future, and thus it is not documented.

The randomization algorithm adopted is the standard Numerical Recipes
LCG.

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1.5% faster overall decode on my penryn

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definition.


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libavutil/error.h.
    
Error code definitions and handling code belong to libavutil, where
they can be shared by all the libav* libraries.
    
See the thread:
Subject: [FFmpeg-devel] [PATCH] Move error codes definitions from lavc to lavu
Date: Sun, 19 Jul 2009 12:09:16 +0200


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