/src/libjpeg-turbo/jdmrgext.c

Source (jump to first uncovered line)
/*
 * jdmrgext.c
 *
 * This file was part of the Independent JPEG Group's software:
 * Copyright (C) 1994-1996, Thomas G. Lane.
 * libjpeg-turbo Modifications:
 * Copyright (C) 2011, 2015, 2020, D. R. Commander.
 * For conditions of distribution and use, see the accompanying README.ijg
 * file.
 *
 * This file contains code for merged upsampling/color conversion.
 */


/* This file is included by jdmerge.c */


/*
 * Upsample and color convert for the case of 2:1 horizontal and 1:1 vertical.
 */

INLINE
LOCAL(void)
h2v1_merged_upsample_internal(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
                              JDIMENSION in_row_group_ctr,
                              JSAMPARRAY output_buf)
{
  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
  register int y, cred, cgreen, cblue;
  int cb, cr;
  register JSAMPROW outptr;
  JSAMPROW inptr0, inptr1, inptr2;
  JDIMENSION col;
  /* copy these pointers into registers if possible */
  register JSAMPLE *range_limit = cinfo->sample_range_limit;
  int *Crrtab = upsample->Cr_r_tab;
  int *Cbbtab = upsample->Cb_b_tab;
  JLONG *Crgtab = upsample->Cr_g_tab;
  JLONG *Cbgtab = upsample->Cb_g_tab;
  SHIFT_TEMPS

  inptr0 = input_buf[0][in_row_group_ctr];
  inptr1 = input_buf[1][in_row_group_ctr];
  inptr2 = input_buf[2][in_row_group_ctr];
  outptr = output_buf[0];
  /* Loop for each pair of output pixels */
  for (col = cinfo->output_width >> 1; col > 0; col--) {
    /* Do the chroma part of the calculation */
    cb = *inptr1++;
    cr = *inptr2++;
    cred = Crrtab[cr];
    cgreen = (int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
    cblue = Cbbtab[cb];
    /* Fetch 2 Y values and emit 2 pixels */
    y  = *inptr0++;
    outptr[RGB_RED] =   range_limit[y + cred];
    outptr[RGB_GREEN] = range_limit[y + cgreen];
    outptr[RGB_BLUE] =  range_limit[y + cblue];
#ifdef RGB_ALPHA
    outptr[RGB_ALPHA] = 0xFF;
#endif
    outptr += RGB_PIXELSIZE;
    y  = *inptr0++;
    outptr[RGB_RED] =   range_limit[y + cred];
    outptr[RGB_GREEN] = range_limit[y + cgreen];
    outptr[RGB_BLUE] =  range_limit[y + cblue];
#ifdef RGB_ALPHA
    outptr[RGB_ALPHA] = 0xFF;
#endif
    outptr += RGB_PIXELSIZE;
  }
  /* If image width is odd, do the last output column separately */
  if (cinfo->output_width & 1) {
    cb = *inptr1;
    cr = *inptr2;
    cred = Crrtab[cr];
    cgreen = (int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
    cblue = Cbbtab[cb];
    y  = *inptr0;
    outptr[RGB_RED] =   range_limit[y + cred];
    outptr[RGB_GREEN] = range_limit[y + cgreen];
    outptr[RGB_BLUE] =  range_limit[y + cblue];
#ifdef RGB_ALPHA
    outptr[RGB_ALPHA] = 0xFF;
#endif
  }
}


/*
 * Upsample and color convert for the case of 2:1 horizontal and 2:1 vertical.
 */

INLINE
LOCAL(void)
h2v2_merged_upsample_internal(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
                              JDIMENSION in_row_group_ctr,
                              JSAMPARRAY output_buf)
{
  my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
  register int y, cred, cgreen, cblue;
  int cb, cr;
  register JSAMPROW outptr0, outptr1;
  JSAMPROW inptr00, inptr01, inptr1, inptr2;
  JDIMENSION col;
  /* copy these pointers into registers if possible */
  register JSAMPLE *range_limit = cinfo->sample_range_limit;
  int *Crrtab = upsample->Cr_r_tab;
  int *Cbbtab = upsample->Cb_b_tab;
  JLONG *Crgtab = upsample->Cr_g_tab;
  JLONG *Cbgtab = upsample->Cb_g_tab;
  SHIFT_TEMPS

  inptr00 = input_buf[0][in_row_group_ctr * 2];
  inptr01 = input_buf[0][in_row_group_ctr * 2 + 1];
  inptr1 = input_buf[1][in_row_group_ctr];
  inptr2 = input_buf[2][in_row_group_ctr];
  outptr0 = output_buf[0];
  outptr1 = output_buf[1];
  /* Loop for each group of output pixels */
  for (col = cinfo->output_width >> 1; col > 0; col--) {
    /* Do the chroma part of the calculation */
    cb = *inptr1++;
    cr = *inptr2++;
    cred = Crrtab[cr];
    cgreen = (int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
    cblue = Cbbtab[cb];
    /* Fetch 4 Y values and emit 4 pixels */
    y  = *inptr00++;
    outptr0[RGB_RED] =   range_limit[y + cred];
    outptr0[RGB_GREEN] = range_limit[y + cgreen];
    outptr0[RGB_BLUE] =  range_limit[y + cblue];
#ifdef RGB_ALPHA
    outptr0[RGB_ALPHA] = 0xFF;
#endif
    outptr0 += RGB_PIXELSIZE;
    y  = *inptr00++;
    outptr0[RGB_RED] =   range_limit[y + cred];
    outptr0[RGB_GREEN] = range_limit[y + cgreen];
    outptr0[RGB_BLUE] =  range_limit[y + cblue];
#ifdef RGB_ALPHA
    outptr0[RGB_ALPHA] = 0xFF;
#endif
    outptr0 += RGB_PIXELSIZE;
    y  = *inptr01++;
    outptr1[RGB_RED] =   range_limit[y + cred];
    outptr1[RGB_GREEN] = range_limit[y + cgreen];
    outptr1[RGB_BLUE] =  range_limit[y + cblue];
#ifdef RGB_ALPHA
    outptr1[RGB_ALPHA] = 0xFF;
#endif
    outptr1 += RGB_PIXELSIZE;
    y  = *inptr01++;
    outptr1[RGB_RED] =   range_limit[y + cred];
    outptr1[RGB_GREEN] = range_limit[y + cgreen];
    outptr1[RGB_BLUE] =  range_limit[y + cblue];
#ifdef RGB_ALPHA
    outptr1[RGB_ALPHA] = 0xFF;
#endif
    outptr1 += RGB_PIXELSIZE;
  }
  /* If image width is odd, do the last output column separately */
  if (cinfo->output_width & 1) {
    cb = *inptr1;
    cr = *inptr2;
    cred = Crrtab[cr];
    cgreen = (int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
    cblue = Cbbtab[cb];
    y  = *inptr00;
    outptr0[RGB_RED] =   range_limit[y + cred];
    outptr0[RGB_GREEN] = range_limit[y + cgreen];
    outptr0[RGB_BLUE] =  range_limit[y + cblue];
#ifdef RGB_ALPHA
    outptr0[RGB_ALPHA] = 0xFF;
#endif
    y  = *inptr01;
    outptr1[RGB_RED] =   range_limit[y + cred];
    outptr1[RGB_GREEN] = range_limit[y + cgreen];
    outptr1[RGB_BLUE] =  range_limit[y + cblue];
#ifdef RGB_ALPHA
    outptr1[RGB_ALPHA] = 0xFF;
#endif
  }
}

Coverage Report

Created: 2022-11-14 06:33

Line	Count	Source (jump to first uncovered line)
1		/*
2		* jdmrgext.c
3		*
4		* This file was part of the Independent JPEG Group's software:
5		* Copyright (C) 1994-1996, Thomas G. Lane.
6		* libjpeg-turbo Modifications:
7		* Copyright (C) 2011, 2015, 2020, D. R. Commander.
8		* For conditions of distribution and use, see the accompanying README.ijg
9		* file.
10		*
11		* This file contains code for merged upsampling/color conversion.
12		*/
13
14
15		/* This file is included by jdmerge.c */
16
17
18		/*
19		* Upsample and color convert for the case of 2:1 horizontal and 1:1 vertical.
20		*/
21
22		INLINE
23		LOCAL(void)
24		h2v1_merged_upsample_internal(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
25		JDIMENSION in_row_group_ctr,
26		JSAMPARRAY output_buf)
27	0	{
28	0	my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
29	0	register int y, cred, cgreen, cblue;
30	0	int cb, cr;
31	0	register JSAMPROW outptr;
32	0	JSAMPROW inptr0, inptr1, inptr2;
33	0	JDIMENSION col;
34		/* copy these pointers into registers if possible */
35	0	register JSAMPLE *range_limit = cinfo->sample_range_limit;
36	0	int *Crrtab = upsample->Cr_r_tab;
37	0	int *Cbbtab = upsample->Cb_b_tab;
38	0	JLONG *Crgtab = upsample->Cr_g_tab;
39	0	JLONG *Cbgtab = upsample->Cb_g_tab;
40	0	SHIFT_TEMPS
41
42	0	inptr0 = input_buf[0][in_row_group_ctr];
43	0	inptr1 = input_buf[1][in_row_group_ctr];
44	0	inptr2 = input_buf[2][in_row_group_ctr];
45	0	outptr = output_buf[0];
46		/* Loop for each pair of output pixels */
47	0	for (col = cinfo->output_width >> 1; col > 0; col--) {
48		/* Do the chroma part of the calculation */
49	0	cb = *inptr1++;
50	0	cr = *inptr2++;
51	0	cred = Crrtab[cr];
52	0	cgreen = (int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
53	0	cblue = Cbbtab[cb];
54		/* Fetch 2 Y values and emit 2 pixels */
55	0	y = *inptr0++;
56	0	outptr[RGB_RED] = range_limit[y + cred];
57	0	outptr[RGB_GREEN] = range_limit[y + cgreen];
58	0	outptr[RGB_BLUE] = range_limit[y + cblue];
59		#ifdef RGB_ALPHA
60	0	outptr[RGB_ALPHA] = 0xFF;
61		#endif
62	0	outptr += RGB_PIXELSIZE;
63	0	y = *inptr0++;
64	0	outptr[RGB_RED] = range_limit[y + cred];
65	0	outptr[RGB_GREEN] = range_limit[y + cgreen];
66	0	outptr[RGB_BLUE] = range_limit[y + cblue];
67		#ifdef RGB_ALPHA
68	0	outptr[RGB_ALPHA] = 0xFF;
69		#endif
70	0	outptr += RGB_PIXELSIZE;
71	0	}
72		/* If image width is odd, do the last output column separately */
73	0	if (cinfo->output_width & 1) {
74	0	cb = *inptr1;
75	0	cr = *inptr2;
76	0	cred = Crrtab[cr];
77	0	cgreen = (int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
78	0	cblue = Cbbtab[cb];
79	0	y = *inptr0;
80	0	outptr[RGB_RED] = range_limit[y + cred];
81	0	outptr[RGB_GREEN] = range_limit[y + cgreen];
82	0	outptr[RGB_BLUE] = range_limit[y + cblue];
83		#ifdef RGB_ALPHA
84	0	outptr[RGB_ALPHA] = 0xFF;
85		#endif
86	0	}
87	0	} Unexecuted instantiation: jdmerge.c:extrgb_h2v1_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extrgbx_h2v1_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extbgr_h2v1_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extbgrx_h2v1_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extxbgr_h2v1_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extxrgb_h2v1_merged_upsample_internal Unexecuted instantiation: jdmerge.c:h2v1_merged_upsample_internal
88
89
90		/*
91		* Upsample and color convert for the case of 2:1 horizontal and 2:1 vertical.
92		*/
93
94		INLINE
95		LOCAL(void)
96		h2v2_merged_upsample_internal(j_decompress_ptr cinfo, JSAMPIMAGE input_buf,
97		JDIMENSION in_row_group_ctr,
98		JSAMPARRAY output_buf)
99	0	{
100	0	my_merged_upsample_ptr upsample = (my_merged_upsample_ptr)cinfo->upsample;
101	0	register int y, cred, cgreen, cblue;
102	0	int cb, cr;
103	0	register JSAMPROW outptr0, outptr1;
104	0	JSAMPROW inptr00, inptr01, inptr1, inptr2;
105	0	JDIMENSION col;
106		/* copy these pointers into registers if possible */
107	0	register JSAMPLE *range_limit = cinfo->sample_range_limit;
108	0	int *Crrtab = upsample->Cr_r_tab;
109	0	int *Cbbtab = upsample->Cb_b_tab;
110	0	JLONG *Crgtab = upsample->Cr_g_tab;
111	0	JLONG *Cbgtab = upsample->Cb_g_tab;
112	0	SHIFT_TEMPS
113
114	0	inptr00 = input_buf[0][in_row_group_ctr * 2];
115	0	inptr01 = input_buf[0][in_row_group_ctr * 2 + 1];
116	0	inptr1 = input_buf[1][in_row_group_ctr];
117	0	inptr2 = input_buf[2][in_row_group_ctr];
118	0	outptr0 = output_buf[0];
119	0	outptr1 = output_buf[1];
120		/* Loop for each group of output pixels */
121	0	for (col = cinfo->output_width >> 1; col > 0; col--) {
122		/* Do the chroma part of the calculation */
123	0	cb = *inptr1++;
124	0	cr = *inptr2++;
125	0	cred = Crrtab[cr];
126	0	cgreen = (int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
127	0	cblue = Cbbtab[cb];
128		/* Fetch 4 Y values and emit 4 pixels */
129	0	y = *inptr00++;
130	0	outptr0[RGB_RED] = range_limit[y + cred];
131	0	outptr0[RGB_GREEN] = range_limit[y + cgreen];
132	0	outptr0[RGB_BLUE] = range_limit[y + cblue];
133		#ifdef RGB_ALPHA
134	0	outptr0[RGB_ALPHA] = 0xFF;
135		#endif
136	0	outptr0 += RGB_PIXELSIZE;
137	0	y = *inptr00++;
138	0	outptr0[RGB_RED] = range_limit[y + cred];
139	0	outptr0[RGB_GREEN] = range_limit[y + cgreen];
140	0	outptr0[RGB_BLUE] = range_limit[y + cblue];
141		#ifdef RGB_ALPHA
142	0	outptr0[RGB_ALPHA] = 0xFF;
143		#endif
144	0	outptr0 += RGB_PIXELSIZE;
145	0	y = *inptr01++;
146	0	outptr1[RGB_RED] = range_limit[y + cred];
147	0	outptr1[RGB_GREEN] = range_limit[y + cgreen];
148	0	outptr1[RGB_BLUE] = range_limit[y + cblue];
149		#ifdef RGB_ALPHA
150	0	outptr1[RGB_ALPHA] = 0xFF;
151		#endif
152	0	outptr1 += RGB_PIXELSIZE;
153	0	y = *inptr01++;
154	0	outptr1[RGB_RED] = range_limit[y + cred];
155	0	outptr1[RGB_GREEN] = range_limit[y + cgreen];
156	0	outptr1[RGB_BLUE] = range_limit[y + cblue];
157		#ifdef RGB_ALPHA
158	0	outptr1[RGB_ALPHA] = 0xFF;
159		#endif
160	0	outptr1 += RGB_PIXELSIZE;
161	0	}
162		/* If image width is odd, do the last output column separately */
163	0	if (cinfo->output_width & 1) {
164	0	cb = *inptr1;
165	0	cr = *inptr2;
166	0	cred = Crrtab[cr];
167	0	cgreen = (int)RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr], SCALEBITS);
168	0	cblue = Cbbtab[cb];
169	0	y = *inptr00;
170	0	outptr0[RGB_RED] = range_limit[y + cred];
171	0	outptr0[RGB_GREEN] = range_limit[y + cgreen];
172	0	outptr0[RGB_BLUE] = range_limit[y + cblue];
173		#ifdef RGB_ALPHA
174	0	outptr0[RGB_ALPHA] = 0xFF;
175		#endif
176	0	y = *inptr01;
177	0	outptr1[RGB_RED] = range_limit[y + cred];
178	0	outptr1[RGB_GREEN] = range_limit[y + cgreen];
179	0	outptr1[RGB_BLUE] = range_limit[y + cblue];
180		#ifdef RGB_ALPHA
181	0	outptr1[RGB_ALPHA] = 0xFF;
182		#endif
183	0	}
184	0	} Unexecuted instantiation: jdmerge.c:extrgb_h2v2_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extrgbx_h2v2_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extbgr_h2v2_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extbgrx_h2v2_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extxbgr_h2v2_merged_upsample_internal Unexecuted instantiation: jdmerge.c:extxrgb_h2v2_merged_upsample_internal Unexecuted instantiation: jdmerge.c:h2v2_merged_upsample_internal