gecko-dev/media/libjpeg/jdcolext.c

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4.4 KiB
C
Исходник Обычный вид История

/*
* jdcolext.c
*
* This file was part of the Independent JPEG Group's software:
* Copyright (C) 1991-1997, Thomas G. Lane.
* libjpeg-turbo Modifications:
* Copyright (C) 2009, 2011, D. R. Commander.
* For conditions of distribution and use, see the accompanying README file.
*
* This file contains output colorspace conversion routines.
*/
/* This file is included by jdcolor.c */
/*
* Convert some rows of samples to the output colorspace.
*
* Note that we change from noninterleaved, one-plane-per-component format
* to interleaved-pixel format. The output buffer is therefore three times
* as wide as the input buffer.
* A starting row offset is provided only for the input buffer. The caller
* can easily adjust the passed output_buf value to accommodate any row
* offset required on that side.
*/
INLINE
LOCAL(void)
ycc_rgb_convert_internal (j_decompress_ptr cinfo,
JSAMPIMAGE input_buf, JDIMENSION input_row,
JSAMPARRAY output_buf, int num_rows)
{
my_cconvert_ptr cconvert = (my_cconvert_ptr) cinfo->cconvert;
register int y, cb, cr;
register JSAMPROW outptr;
register JSAMPROW inptr0, inptr1, inptr2;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->output_width;
/* copy these pointers into registers if possible */
register JSAMPLE * range_limit = cinfo->sample_range_limit;
register int * Crrtab = cconvert->Cr_r_tab;
register int * Cbbtab = cconvert->Cb_b_tab;
register INT32 * Crgtab = cconvert->Cr_g_tab;
register INT32 * Cbgtab = cconvert->Cb_g_tab;
SHIFT_TEMPS
while (--num_rows >= 0) {
inptr0 = input_buf[0][input_row];
inptr1 = input_buf[1][input_row];
inptr2 = input_buf[2][input_row];
input_row++;
outptr = *output_buf++;
for (col = 0; col < num_cols; col++) {
y = GETJSAMPLE(inptr0[col]);
cb = GETJSAMPLE(inptr1[col]);
cr = GETJSAMPLE(inptr2[col]);
/* Range-limiting is essential due to noise introduced by DCT losses. */
outptr[RGB_RED] = range_limit[y + Crrtab[cr]];
outptr[RGB_GREEN] = range_limit[y +
Bug 1061240 - Update libjpeg-turbo to version 1.4. r=jmuizelaar, r=glandium, f=rankov --HG-- rename : media/libjpeg/config.h => media/libjpeg/jconfigint.h rename : media/libjpeg/simd/jcclrmmx.asm => media/libjpeg/simd/jccolext-mmx.asm rename : media/libjpeg/simd/jcclrss2-64.asm => media/libjpeg/simd/jccolext-sse2-64.asm rename : media/libjpeg/simd/jcclrss2.asm => media/libjpeg/simd/jccolext-sse2.asm rename : media/libjpeg/simd/jccolmmx.asm => media/libjpeg/simd/jccolor-mmx.asm rename : media/libjpeg/simd/jccolss2-64.asm => media/libjpeg/simd/jccolor-sse2-64.asm rename : media/libjpeg/simd/jccolss2.asm => media/libjpeg/simd/jccolor-sse2.asm rename : media/libjpeg/simd/jcgrammx.asm => media/libjpeg/simd/jcgray-mmx.asm rename : media/libjpeg/simd/jcgrass2-64.asm => media/libjpeg/simd/jcgray-sse2-64.asm rename : media/libjpeg/simd/jcgrass2.asm => media/libjpeg/simd/jcgray-sse2.asm rename : media/libjpeg/simd/jcgrymmx.asm => media/libjpeg/simd/jcgryext-mmx.asm rename : media/libjpeg/simd/jcgryss2-64.asm => media/libjpeg/simd/jcgryext-sse2-64.asm rename : media/libjpeg/simd/jcgryss2.asm => media/libjpeg/simd/jcgryext-sse2.asm rename : media/libjpeg/simd/jcsammmx.asm => media/libjpeg/simd/jcsample-mmx.asm rename : media/libjpeg/simd/jcsamss2-64.asm => media/libjpeg/simd/jcsample-sse2-64.asm rename : media/libjpeg/simd/jcsamss2.asm => media/libjpeg/simd/jcsample-sse2.asm rename : media/libjpeg/simd/jdclrmmx.asm => media/libjpeg/simd/jdcolext-mmx.asm rename : media/libjpeg/simd/jdclrss2-64.asm => media/libjpeg/simd/jdcolext-sse2-64.asm rename : media/libjpeg/simd/jdclrss2.asm => media/libjpeg/simd/jdcolext-sse2.asm rename : media/libjpeg/simd/jdcolmmx.asm => media/libjpeg/simd/jdcolor-mmx.asm rename : media/libjpeg/simd/jdcolss2-64.asm => media/libjpeg/simd/jdcolor-sse2-64.asm rename : media/libjpeg/simd/jdcolss2.asm => media/libjpeg/simd/jdcolor-sse2.asm rename : media/libjpeg/simd/jdmermmx.asm => media/libjpeg/simd/jdmerge-mmx.asm rename : media/libjpeg/simd/jdmerss2-64.asm => media/libjpeg/simd/jdmerge-sse2-64.asm rename : media/libjpeg/simd/jdmerss2.asm => media/libjpeg/simd/jdmerge-sse2.asm rename : media/libjpeg/simd/jdmrgmmx.asm => media/libjpeg/simd/jdmrgext-mmx.asm rename : media/libjpeg/simd/jdmrgss2-64.asm => media/libjpeg/simd/jdmrgext-sse2-64.asm rename : media/libjpeg/simd/jdmrgss2.asm => media/libjpeg/simd/jdmrgext-sse2.asm rename : media/libjpeg/simd/jdsammmx.asm => media/libjpeg/simd/jdsample-mmx.asm rename : media/libjpeg/simd/jdsamss2-64.asm => media/libjpeg/simd/jdsample-sse2-64.asm rename : media/libjpeg/simd/jdsamss2.asm => media/libjpeg/simd/jdsample-sse2.asm rename : media/libjpeg/simd/jf3dnflt.asm => media/libjpeg/simd/jfdctflt-3dn.asm rename : media/libjpeg/simd/jfsseflt-64.asm => media/libjpeg/simd/jfdctflt-sse-64.asm rename : media/libjpeg/simd/jfsseflt.asm => media/libjpeg/simd/jfdctflt-sse.asm rename : media/libjpeg/simd/jfmmxfst.asm => media/libjpeg/simd/jfdctfst-mmx.asm rename : media/libjpeg/simd/jfss2fst-64.asm => media/libjpeg/simd/jfdctfst-sse2-64.asm rename : media/libjpeg/simd/jfss2fst.asm => media/libjpeg/simd/jfdctfst-sse2.asm rename : media/libjpeg/simd/jfmmxint.asm => media/libjpeg/simd/jfdctint-mmx.asm rename : media/libjpeg/simd/jfss2int-64.asm => media/libjpeg/simd/jfdctint-sse2-64.asm rename : media/libjpeg/simd/jfss2int.asm => media/libjpeg/simd/jfdctint-sse2.asm rename : media/libjpeg/simd/ji3dnflt.asm => media/libjpeg/simd/jidctflt-3dn.asm rename : media/libjpeg/simd/jisseflt.asm => media/libjpeg/simd/jidctflt-sse.asm rename : media/libjpeg/simd/jiss2flt-64.asm => media/libjpeg/simd/jidctflt-sse2-64.asm rename : media/libjpeg/simd/jiss2flt.asm => media/libjpeg/simd/jidctflt-sse2.asm rename : media/libjpeg/simd/jimmxfst.asm => media/libjpeg/simd/jidctfst-mmx.asm rename : media/libjpeg/simd/jiss2fst-64.asm => media/libjpeg/simd/jidctfst-sse2-64.asm rename : media/libjpeg/simd/jiss2fst.asm => media/libjpeg/simd/jidctfst-sse2.asm rename : media/libjpeg/simd/jimmxint.asm => media/libjpeg/simd/jidctint-mmx.asm rename : media/libjpeg/simd/jiss2int-64.asm => media/libjpeg/simd/jidctint-sse2-64.asm rename : media/libjpeg/simd/jiss2int.asm => media/libjpeg/simd/jidctint-sse2.asm rename : media/libjpeg/simd/jimmxred.asm => media/libjpeg/simd/jidctred-mmx.asm rename : media/libjpeg/simd/jiss2red-64.asm => media/libjpeg/simd/jidctred-sse2-64.asm rename : media/libjpeg/simd/jiss2red.asm => media/libjpeg/simd/jidctred-sse2.asm rename : media/libjpeg/simd/jcqnt3dn.asm => media/libjpeg/simd/jquant-3dn.asm rename : media/libjpeg/simd/jcqntmmx.asm => media/libjpeg/simd/jquant-mmx.asm rename : media/libjpeg/simd/jcqntsse.asm => media/libjpeg/simd/jquant-sse.asm rename : media/libjpeg/simd/jcqnts2f-64.asm => media/libjpeg/simd/jquantf-sse2-64.asm rename : media/libjpeg/simd/jcqnts2f.asm => media/libjpeg/simd/jquantf-sse2.asm rename : media/libjpeg/simd/jcqnts2i-64.asm => media/libjpeg/simd/jquanti-sse2-64.asm rename : media/libjpeg/simd/jcqnts2i.asm => media/libjpeg/simd/jquanti-sse2.asm
2015-01-21 06:19:57 +03:00
((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr],
SCALEBITS))];
outptr[RGB_BLUE] = range_limit[y + Cbbtab[cb]];
/* Set unused byte to 0xFF so it can be interpreted as an opaque */
/* alpha channel value */
#ifdef RGB_ALPHA
outptr[RGB_ALPHA] = 0xFF;
#endif
outptr += RGB_PIXELSIZE;
}
}
}
/*
* Convert grayscale to RGB: just duplicate the graylevel three times.
* This is provided to support applications that don't want to cope
* with grayscale as a separate case.
*/
INLINE
LOCAL(void)
gray_rgb_convert_internal (j_decompress_ptr cinfo,
JSAMPIMAGE input_buf, JDIMENSION input_row,
JSAMPARRAY output_buf, int num_rows)
{
register JSAMPROW inptr, outptr;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->output_width;
while (--num_rows >= 0) {
inptr = input_buf[0][input_row++];
outptr = *output_buf++;
for (col = 0; col < num_cols; col++) {
/* We can dispense with GETJSAMPLE() here */
outptr[RGB_RED] = outptr[RGB_GREEN] = outptr[RGB_BLUE] = inptr[col];
/* Set unused byte to 0xFF so it can be interpreted as an opaque */
/* alpha channel value */
#ifdef RGB_ALPHA
outptr[RGB_ALPHA] = 0xFF;
#endif
outptr += RGB_PIXELSIZE;
}
}
}
/*
* Convert RGB to extended RGB: just swap the order of source pixels
*/
INLINE
LOCAL(void)
rgb_rgb_convert_internal (j_decompress_ptr cinfo,
JSAMPIMAGE input_buf, JDIMENSION input_row,
JSAMPARRAY output_buf, int num_rows)
{
register JSAMPROW inptr0, inptr1, inptr2;
register JSAMPROW outptr;
register JDIMENSION col;
JDIMENSION num_cols = cinfo->output_width;
while (--num_rows >= 0) {
inptr0 = input_buf[0][input_row];
inptr1 = input_buf[1][input_row];
inptr2 = input_buf[2][input_row];
input_row++;
outptr = *output_buf++;
for (col = 0; col < num_cols; col++) {
/* We can dispense with GETJSAMPLE() here */
outptr[RGB_RED] = inptr0[col];
outptr[RGB_GREEN] = inptr1[col];
outptr[RGB_BLUE] = inptr2[col];
/* Set unused byte to 0xFF so it can be interpreted as an opaque */
/* alpha channel value */
#ifdef RGB_ALPHA
outptr[RGB_ALPHA] = 0xFF;
#endif
outptr += RGB_PIXELSIZE;
}
}
}