FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/mss2dsp.c	Lines:	53	59	89.8 %
Date:	2021-04-20 04:37:23	Branches:	18	22	81.8 %


/*
 * Microsoft Screen 2 (aka Windows Media Video V9 Screen) decoder
 *
 * This file is part of FFmpeg.
 *
 * FFmpeg is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * FFmpeg is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with FFmpeg; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */

/**
 * @file
 * Microsoft Screen 2 (aka Windows Media Video V9 Screen) decoder DSP routines
 */

#include "mss2dsp.h"
#include "libavutil/common.h"

static av_always_inline void mss2_blit_wmv9_template(uint8_t *dst,
                                                     ptrdiff_t dst_stride,
                                                     int gray,
                                                     int use_mask,
                                                     int maskcolor,
                                                     const uint8_t *mask,
                                                     ptrdiff_t mask_stride,
                                                     const uint8_t *srcy,
                                                     ptrdiff_t srcy_stride,
                                                     const uint8_t *srcu,
                                                     const uint8_t *srcv,
                                                     ptrdiff_t srcuv_stride,
                                                     int w, int h)
{
    int i, j, k, r = -1;
    while (++r < h) {
        for (i = 0, j = 0, k = 0; i < w; j += (i & 1), i++, k += 3) {
            if (!use_mask || mask[i] == maskcolor) {
                if (gray) {
                    dst[k] = dst[k + 1] = dst[k + 2] = 0x80;
                } else {
                    int y = srcy[i];
                    int u = srcu[j] - 128;
                    int v = srcv[j] - 128;
                    dst[k]     = av_clip_uint8(y + (             91881 * v + 32768 >> 16));
                    dst[k + 1] = av_clip_uint8(y + (-22554 * u - 46802 * v + 32768 >> 16));
                    dst[k + 2] = av_clip_uint8(y + (116130 * u             + 32768 >> 16));
                }
            }
        }
        mask +=  mask_stride;
        dst  +=   dst_stride;
        srcy +=  srcy_stride;
        srcu += srcuv_stride * (r & 1);
        srcv += srcuv_stride * (r & 1);
    }
}

static void mss2_blit_wmv9_c(uint8_t *dst, ptrdiff_t dst_stride,
                             const uint8_t *srcy, ptrdiff_t srcy_stride,
                             const uint8_t *srcu, const uint8_t *srcv,
                             ptrdiff_t srcuv_stride, int w, int h)
{
    mss2_blit_wmv9_template(dst, dst_stride, 0, 0,
                            0, NULL, 0,
                            srcy, srcy_stride,
                            srcu, srcv, srcuv_stride,
                            w, h);
}

static void mss2_blit_wmv9_masked_c(uint8_t *dst, ptrdiff_t dst_stride,
                                    int maskcolor, const uint8_t *mask,
                                    ptrdiff_t mask_stride,
                                    const uint8_t *srcy, ptrdiff_t srcy_stride,
                                    const uint8_t *srcu, const uint8_t *srcv,
                                    ptrdiff_t srcuv_stride, int w, int h)
{
    mss2_blit_wmv9_template(dst, dst_stride, 0, 1,
                            maskcolor, mask, mask_stride,
                            srcy, srcy_stride,
                            srcu, srcv, srcuv_stride,
                            w, h);
}

static void mss2_gray_fill_masked_c(uint8_t *dst, ptrdiff_t dst_stride,
                                    int maskcolor, const uint8_t *mask,
                                    ptrdiff_t mask_stride, int w, int h)
{
    mss2_blit_wmv9_template(dst, dst_stride, 1, 1,
                            maskcolor, mask, mask_stride,
                            NULL, 0,
                            NULL, NULL, 0,
                            w, h);
}

static void upsample_plane_c(uint8_t *plane, ptrdiff_t plane_stride, int w, int h)
{
    uint8_t *src1, *src2, *dst1, *dst2, *p, a, b;
    int i, j;

    if(!w || !h)
        return;

    w += (w & 1);
    h += (h & 1);

    j = h - 1;

    memcpy(plane + plane_stride *  j,
           plane + plane_stride * (j >> 1),
           w);

    while ((j -= 2) > 0) {
        dst1 = plane + plane_stride *  (j + 1);
        dst2 = plane + plane_stride *   j;
        src1 = plane + plane_stride * ((j + 1) >> 1);
        src2 = plane + plane_stride * ( j      >> 1);

        for (i = (w - 1) >> 1; i >= 0; i--) {
            a = src1[i];
            b = src2[i];
            dst1[i] = (3 * a + b + 2) >> 2;
            dst2[i] = (a + 3 * b + 2) >> 2;
        }
    }

    for (j = h - 1; j >= 0; j--) {
        p = plane + plane_stride * j;
        i = w - 1;

        p[i] = p[i >> 1];

        while ((i -= 2) > 0) {
            a = p[ i      >> 1];
            b = p[(i + 1) >> 1];
            p[i]     = (3 * a + b + 1) >> 2;
            p[i + 1] = (a + 3 * b + 1) >> 2;
        }
    }
}

av_cold void ff_mss2dsp_init(MSS2DSPContext* dsp)
{
    dsp->mss2_blit_wmv9        = mss2_blit_wmv9_c;
    dsp->mss2_blit_wmv9_masked = mss2_blit_wmv9_masked_c;
    dsp->mss2_gray_fill_masked = mss2_gray_fill_masked_c;
    dsp->upsample_plane        = upsample_plane_c;
}


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* Microsoft Screen 2 (aka Windows Media Video V9 Screen) decoder
3			*
4			* This file is part of FFmpeg.
5			*
6			* FFmpeg is free software; you can redistribute it and/or
7			* modify it under the terms of the GNU Lesser General Public
8			* License as published by the Free Software Foundation; either
9			* version 2.1 of the License, or (at your option) any later version.
10			*
11			* FFmpeg is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14			* Lesser General Public License for more details.
15			*
16			* You should have received a copy of the GNU Lesser General Public
17			* License along with FFmpeg; if not, write to the Free Software
18			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19			*/
20
21			/**
22			* @file
23			* Microsoft Screen 2 (aka Windows Media Video V9 Screen) decoder DSP routines
24			*/
25
26			#include "mss2dsp.h"
27			#include "libavutil/common.h"
28
29		79	static av_always_inline void mss2_blit_wmv9_template(uint8_t *dst,
30			ptrdiff_t dst_stride,
31			int gray,
32			int use_mask,
33			int maskcolor,
34			const uint8_t *mask,
35			ptrdiff_t mask_stride,
36			const uint8_t *srcy,
37			ptrdiff_t srcy_stride,
38			const uint8_t *srcu,
39			const uint8_t *srcv,
40			ptrdiff_t srcuv_stride,
41			int w, int h)
42			{
43		79	int i, j, k, r = -1;
44	✓✓	19039	while (++r < h) {
45	✓✓	6081840	for (i = 0, j = 0, k = 0; i < w; j += (i & 1), i++, k += 3) {
46	✓✗✓✓	6062880	if (!use_mask \|\| mask[i] == maskcolor) {
47	✗✓	5965570	if (gray) {
48			dst[k] = dst[k + 1] = dst[k + 2] = 0x80;
49			} else {
50		5965570	int y = srcy[i];
51		5965570	int u = srcu[j] - 128;
52		5965570	int v = srcv[j] - 128;
53		5965570	dst[k] = av_clip_uint8(y + ( 91881 * v + 32768 >> 16));
54		5965570	dst[k + 1] = av_clip_uint8(y + (-22554 * u - 46802 * v + 32768 >> 16));
55		5965570	dst[k + 2] = av_clip_uint8(y + (116130 * u + 32768 >> 16));
56			}
57			}
58			}
59		18960	mask += mask_stride;
60		18960	dst += dst_stride;
61		18960	srcy += srcy_stride;
62		18960	srcu += srcuv_stride * (r & 1);
63		18960	srcv += srcuv_stride * (r & 1);
64			}
65		79	}
66
67			static void mss2_blit_wmv9_c(uint8_t *dst, ptrdiff_t dst_stride,
68			const uint8_t *srcy, ptrdiff_t srcy_stride,
69			const uint8_t srcu, const uint8_t srcv,
70			ptrdiff_t srcuv_stride, int w, int h)
71			{
72			mss2_blit_wmv9_template(dst, dst_stride, 0, 0,
73			0, NULL, 0,
74			srcy, srcy_stride,
75			srcu, srcv, srcuv_stride,
76			w, h);
77			}
78
79		79	static void mss2_blit_wmv9_masked_c(uint8_t *dst, ptrdiff_t dst_stride,
80			int maskcolor, const uint8_t *mask,
81			ptrdiff_t mask_stride,
82			const uint8_t *srcy, ptrdiff_t srcy_stride,
83			const uint8_t srcu, const uint8_t srcv,
84			ptrdiff_t srcuv_stride, int w, int h)
85			{
86		79	mss2_blit_wmv9_template(dst, dst_stride, 0, 1,
87			maskcolor, mask, mask_stride,
88			srcy, srcy_stride,
89			srcu, srcv, srcuv_stride,
90			w, h);
91		79	}
92
93			static void mss2_gray_fill_masked_c(uint8_t *dst, ptrdiff_t dst_stride,
94			int maskcolor, const uint8_t *mask,
95			ptrdiff_t mask_stride, int w, int h)
96			{
97			mss2_blit_wmv9_template(dst, dst_stride, 1, 1,
98			maskcolor, mask, mask_stride,
99			NULL, 0,
100			NULL, NULL, 0,
101			w, h);
102			}
103
104		159	static void upsample_plane_c(uint8_t *plane, ptrdiff_t plane_stride, int w, int h)
105			{
106			uint8_t src1, src2, dst1, dst2, *p, a, b;
107			int i, j;
108
109	✓✗✗✓	159	if(!w \|\| !h)
110			return;
111
112		159	w += (w & 1);
113		159	h += (h & 1);
114
115		159	j = h - 1;
116
117		159	memcpy(plane + plane_stride * j,
118		159	plane + plane_stride * (j >> 1),
119			w);
120
121	✓✓	12720	while ((j -= 2) > 0) {
122		12561	dst1 = plane + plane_stride * (j + 1);
123		12561	dst2 = plane + plane_stride * j;
124		12561	src1 = plane + plane_stride * ((j + 1) >> 1);
125		12561	src2 = plane + plane_stride * ( j >> 1);
126
127	✓✓	1520695	for (i = (w - 1) >> 1; i >= 0; i--) {
128		1508134	a = src1[i];
129		1508134	b = src2[i];
130		1508134	dst1[i] = (3 * a + b + 2) >> 2;
131		1508134	dst2[i] = (a + 3 * b + 2) >> 2;
132			}
133			}
134
135	✓✓	25599	for (j = h - 1; j >= 0; j--) {
136		25440	p = plane + plane_stride * j;
137		25440	i = w - 1;
138
139		25440	p[i] = p[i >> 1];
140
141	✓✓	3050160	while ((i -= 2) > 0) {
142		3024720	a = p[ i >> 1];
143		3024720	b = p[(i + 1) >> 1];
144		3024720	p[i] = (3 * a + b + 1) >> 2;
145		3024720	p[i + 1] = (a + 3 * b + 1) >> 2;
146			}
147			}
148			}
149
150		10	av_cold void ff_mss2dsp_init(MSS2DSPContext* dsp)
151			{
152		10	dsp->mss2_blit_wmv9 = mss2_blit_wmv9_c;
153		10	dsp->mss2_blit_wmv9_masked = mss2_blit_wmv9_masked_c;
154		10	dsp->mss2_gray_fill_masked = mss2_gray_fill_masked_c;
155		10	dsp->upsample_plane = upsample_plane_c;
156		10	}