Mercurial > sdl-ios-xcode
view README.PS3 @ 3539:f2846bf19360
Fixed bug #896
John Popplewell 2009-12-08 23:05:50 PST
Originally reported by AKFoerster on the mailing list.
Error decoding UTF8 Russian text to UTF-16LE on Windows, but specifically on
platforms without iconv support (the default on Windows).
Valid UTF8 characters are flagged as being overlong and then substituted by the
UNKNOWN_UNICODE character.
After studying the testiconv.c example program, reading the RFCs and putting
some printf statements in SDL_iconv.c the problem is in a test for 'Maximum
overlong sequences', specifically 4.2.1, which is carried out by the following
code:
} else if ( p[0] >= 0xC0 ) {
if ( (p[0] & 0xE0) != 0xC0 ) {
/* Skip illegal sequences
return SDL_ICONV_EILSEQ;
*/
ch = UNKNOWN_UNICODE;
} else {
if ( (p[0] & 0xCE) == 0xC0 ) { <<<<<<<< here
overlong = SDL_TRUE;
}
ch = (Uint32)(p[0] & 0x1F);
left = 1;
}
} else {
Here is the 2-byte encoding of a character in range 00000080 - 000007FF
110xxxxx 10xxxxxx
The line in question is supposed to be checking for an overlong sequence which
would be less than
11000001 10111111
which should be represented as a single byte.
BUT, the mask value (0xCE) is wrong, it isn't checking the top-most bit:
11000001 value
11001110 mask (incorrect)
^
and should be (0xDE):
11000001 value
11011110 mask (correct)
making the above code:
} else if ( p[0] >= 0xC0 ) {
if ( (p[0] & 0xE0) != 0xC0 ) {
/* Skip illegal sequences
return SDL_ICONV_EILSEQ;
*/
ch = UNKNOWN_UNICODE;
} else {
if ( (p[0] & 0xDE) == 0xC0 ) { <<<<<<<< here
overlong = SDL_TRUE;
}
ch = (Uint32)(p[0] & 0x1F);
left = 1;
}
} else {
I can supply a test program and/or a patch if required,
best regards,
John Popplewell
author | Sam Lantinga <slouken@libsdl.org> |
---|---|
date | Fri, 11 Dec 2009 08:03:43 +0000 |
parents | 94fb40a4a9a7 |
children |
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SDL on Sony Playstation3 ------------------------ Installation: First, you have to install the Cell SDK - Download the Cell SDK installer RPM and ISO images to a temporary directory such as /tmp/cellsdk. - Mount the image: mount -o loop CellSDK-Devel-Fedora_3.1.0.0.0.iso /tmp/cellsdk - Install the SDK installer: rpm -ivh cell-install-3.1.0-0.0.noarch.rpm - Install the SDK: cd /opt/cell && ./cellsdk --iso /tmp/cellsdkiso install You'll than need to install the SPU-libs - Run make ps3-libs && make ps3libs-install Finally, install SDL - Go to SDL-1.2/ and build SDL like any other GNU style package. e.g. - Build the configure-script with ./autogen.sh - Configure SDL for your needs: ./configure --enable-video-ps3 ... - Build and install it: make && make install Todo: - Mouse & Keyboard support - On SPU-side the current scaler and converter restrictions are: - resolution has to be a multiple of 8 (will work on that) - scaler/converter only supports the YV12 and IYUV format - the scaler works only bilinear (lanzos would be nice) - Optimize the SPU-program handling on the PPE side - Integrate spumedia in SDL Have fun! Dirk Herrendoerfer <d.herrendoerfer [at] de [dot ibm [dot] com>