YUV to RGB conversion broken for odd widths

[SDLBugzilla]

This bug report was migrated from our old Bugzilla tracker.

Reported in version: HG 1.2
Reported for operating system, platform: Linux, x86

Comments on the original bug report:

On 2008-12-08 23:09:01 +0000, Daniel Verkamp wrote:

Example of this problem is ffplay from FFmpeg:

Input to ffplay is bitmap at http://samples.mplayerhq.hu/bmp-files/test32bf.bmp (width = 127); ffplay internally converts to YUV and displays it (incorrectly) as http://drv.nu/stuff/ffplay-test32bf.png

Looks like one of the channels is misaligned.

Other ffmpeg tools and mplayer -vf format=bgr32 -vo sdl can convert or display this file correctly, so it seems to be a problem with SDL_DisplayYUVOverlay.

The ffplay source is available in FFmpeg SVN as ffplay.c

See also relevant FFmpeg bug http://roundup.mplayerhq.hu/roundup/ffmpeg/issue731

Tested with Gentoo amd64 media-libs/libsdl-1.2.13

On 2009-09-13 16:33:07 +0000, Ryan C. Gordon wrote:

Tagging this bug with "target-1.2.14" so we can try to resolve it for SDL 1.2.14.

Please note that we may choose to resolve it as WONTFIX. This tag is largely so we have a comprehensive wishlist of bugs to examine for 1.2.14 (and so we can close bugs that we'll never fix, rather than have them live forever in Bugzilla).

--ryan.

On 2009-09-27 15:04:50 +0000, Sam Lantinga wrote:

SDL 1.2 YUV code only supports even width and height. You're welcome to submit a patch for SDL 1.3 however.