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Allow RGB JPEG files to be created/decoded when using the LJT colorspace extensions

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git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.2.x@809 632fc199-4ca6-4c93-a231-07263d6284db
This commit is contained in:
DRC
2012-03-11 22:06:54 +00:00
parent 69c1408e9d
commit a9b646c202
5 changed files with 219 additions and 18 deletions
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34
jccolext.c
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@@ -2,7 +2,7 @@
* jccolext.c
*
* Copyright (C) 1991-1996, Thomas G. Lane.
* Copyright (C) 2009-2011, D. R. Commander.
* Copyright (C) 2009-2012, D. R. Commander.
* This file is part of the Independent JPEG Group's software.
* For conditions of distribution and use, see the accompanying README file.
*
@@ -112,3 +112,35 @@ rgb_gray_convert_internal (j_compress_ptr cinfo,
}
}
}
/*
* Convert some rows of samples to the JPEG colorspace.
* This version handles extended RGB->plain RGB conversion
*/
INLINE
LOCAL(void)
rgb_rgb_convert_internal (j_compress_ptr cinfo,
JSAMPARRAY input_buf, JSAMPIMAGE output_buf,
JDIMENSION output_row, int num_rows)
{
register JSAMPROW inptr;
register JSAMPROW outptr0, outptr1, outptr2;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->image_width;
while (--num_rows >= 0) {
inptr = *input_buf++;
outptr0 = output_buf[0][output_row];
outptr1 = output_buf[1][output_row];
outptr2 = output_buf[2][output_row];
output_row++;
for (col = 0; col < num_cols; col++) {
outptr0[col] = GETJSAMPLE(inptr[RGB_RED]);
outptr1[col] = GETJSAMPLE(inptr[RGB_GREEN]);
outptr2[col] = GETJSAMPLE(inptr[RGB_BLUE]);
inptr += RGB_PIXELSIZE;
}
}
}