Most option values are simply unused or ignored and in practice the
majory of codecs only need to check whether to enable rle or not.
Add appropriate codec private options which better expose the allowed
features.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
The rationale is that coded_frame was only used to communicate key_frame,
pict_type and quality to the caller, as well as a few other random fields,
in a non predictable, let alone consistent way.
There was agreement that there was no use case for coded_frame, as it is
a full-sized AVFrame container used for just 2-3 int-sized properties,
which shouldn't even belong into the AVCodecContext in the first place.
The appropriate AVPacket flag can be used instead of key_frame, while
quality is exported with the new AVPacketSideData quality factor.
There is no replacement for the other fields as they were unreliable,
mishandled or just not used at all.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Allocating coded_frame is what most encoders do anyway, so it makes
sense to always allocate and free it in a single place. Moreover a lot
of encoders freed the frame with av_freep() instead of the correct API
av_frame_free().
This bring uniformity to encoder behaviour and prevents applications
from erroneusly accessing this field when not allocated. Additionally
this helps isolating encoders that export information with coded_frame,
and heavily simplifies its deprecation.
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
Also break some long lines, remove codec function placeholder comments
and add spaces in sample/pixel format lists.
Signed-off-by: Martin Storsjö <martin@martin.st>
Not only the repeated byte is calculated as (count ^ xor) + add
but also the raw encoding lenth byte is calculated as that too
patch by Xiaohui Sun sunxiaohui dsp ac cn
Originally committed as revision 8602 to svn://svn.ffmpeg.org/ffmpeg/trunk
patch by Bobby Bingham % uhmmmm A gmail P com %
Only handles 24-bit BGR and 8-bit grayscale, no RLE at the moment either.
Original thread:
Date: Mar 11, 2007 7:58 PM
Subject: [Ffmpeg-devel] [PATCH] Targa encoder
Originally committed as revision 8411 to svn://svn.ffmpeg.org/ffmpeg/trunk
Vittorio Giovara
Anton Khirnov
Diego Biurrun
Martin Storsjö
Stefano Sabatini
Mans Rullgard
Diego Elio Pettenò
Alexis Ballier
Benoit Fouet
Anne-Laure de Smit
Reimar Döffinger
Michael Niedermayer
Carl Eugen Hoyos
Ramiro Polla
Zuxy Meng
Xiaohui Sun
Bobby Bingham