FFmpeg coverage

GCC Code Coverage Report

Directory:	../../../ffmpeg/		Exec	Total	Coverage
File:	src/libavcodec/rl.c	Lines:	61	78	78.2 %
Date:	2020-08-14 10:39:37	Branches:	33	46	71.7 %


/*
 * 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
 */

#include <stdint.h>
#include <string.h>

#include "libavutil/attributes.h"
#include "libavutil/avassert.h"
#include "libavutil/mem.h"

#include "rl.h"

void ff_rl_free(RLTable *rl)
{
    int i;

    for (i = 0; i < 2; i++) {
        av_freep(&rl->max_run[i]);
        av_freep(&rl->max_level[i]);
        av_freep(&rl->index_run[i]);
    }
}

av_cold int ff_rl_init(RLTable *rl,
                       uint8_t static_store[2][2 * MAX_RUN + MAX_LEVEL + 3])
{
    int8_t  max_level[MAX_RUN + 1], max_run[MAX_LEVEL + 1];
    uint8_t index_run[MAX_RUN + 1];
    int last, run, level, start, end, i;

    /* If table is static, we can quit if rl->max_level[0] is not NULL */
    if (static_store && rl->max_level[0])
        return 0;

    /* compute max_level[], max_run[] and index_run[] */
    for (last = 0; last < 2; last++) {
        if (last == 0) {
            start = 0;
            end = rl->last;
        } else {
            start = rl->last;
            end = rl->n;
        }

        memset(max_level, 0, MAX_RUN + 1);
        memset(max_run, 0, MAX_LEVEL + 1);
        memset(index_run, rl->n, MAX_RUN + 1);
        for (i = start; i < end; i++) {
            run   = rl->table_run[i];
            level = rl->table_level[i];
            if (index_run[run] == rl->n)
                index_run[run] = i;
            if (level > max_level[run])
                max_level[run] = level;
            if (run > max_run[level])
                max_run[level] = run;
        }
        if (static_store)
            rl->max_level[last] = static_store[last];
        else {
            rl->max_level[last] = av_malloc(MAX_RUN + 1);
            if (!rl->max_level[last])
                goto fail;
        }
        memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
        if (static_store)
            rl->max_run[last]   = static_store[last] + MAX_RUN + 1;
        else {
            rl->max_run[last]   = av_malloc(MAX_LEVEL + 1);
            if (!rl->max_run[last])
                goto fail;
        }
        memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
        if (static_store)
            rl->index_run[last] = static_store[last] + MAX_RUN + MAX_LEVEL + 2;
        else {
            rl->index_run[last] = av_malloc(MAX_RUN + 1);
            if (!rl->index_run[last])
                goto fail;
        }
        memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
    }
    return 0;

fail:
    ff_rl_free(rl);
    return AVERROR(ENOMEM);
}

av_cold void ff_rl_init_vlc(RLTable *rl, unsigned static_size)
{
    int i, q;
    VLC_TYPE table[1500][2] = {{0}};
    VLC vlc = { .table = table, .table_allocated = static_size };
    av_assert0(static_size <= FF_ARRAY_ELEMS(table));
    init_vlc(&vlc, 9, rl->n + 1, &rl->table_vlc[0][1], 4, 2, &rl->table_vlc[0][0], 4, 2, INIT_VLC_USE_NEW_STATIC);

    for (q = 0; q < 32; q++) {
        int qmul = q * 2;
        int qadd = (q - 1) | 1;

        if (q == 0) {
            qmul = 1;
            qadd = 0;
        }
        for (i = 0; i < vlc.table_size; i++) {
            int code = vlc.table[i][0];
            int len  = vlc.table[i][1];
            int level, run;

            if (len == 0) { // illegal code
                run   = 66;
                level = MAX_LEVEL;
            } else if (len < 0) { // more bits needed
                run   = 0;
                level = code;
            } else {
                if (code == rl->n) { // esc
                    run   = 66;
                    level =  0;
                } else {
                    run   = rl->table_run[code] + 1;
                    level = rl->table_level[code] * qmul + qadd;
                    if (code >= rl->last) run += 192;
                }
            }
            rl->rl_vlc[q][i].len   = len;
            rl->rl_vlc[q][i].level = level;
            rl->rl_vlc[q][i].run   = run;
        }
    }
}


Generated by: GCOVR (Version 4.2)

Line	Branch	Exec	Source
1			/*
2			* This file is part of FFmpeg.
3			*
4			* FFmpeg is free software; you can redistribute it and/or
5			* modify it under the terms of the GNU Lesser General Public
6			* License as published by the Free Software Foundation; either
7			* version 2.1 of the License, or (at your option) any later version.
8			*
9			* FFmpeg is distributed in the hope that it will be useful,
10			* but WITHOUT ANY WARRANTY; without even the implied warranty of
11			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12			* Lesser General Public License for more details.
13			*
14			* You should have received a copy of the GNU Lesser General Public
15			* License along with FFmpeg; if not, write to the Free Software
16			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17			*/
18
19			#include <stdint.h>
20			#include <string.h>
21
22			#include "libavutil/attributes.h"
23			#include "libavutil/avassert.h"
24			#include "libavutil/mem.h"
25
26			#include "rl.h"
27
28			void ff_rl_free(RLTable *rl)
29			{
30			int i;
31
32			for (i = 0; i < 2; i++) {
33			av_freep(&rl->max_run[i]);
34			av_freep(&rl->max_level[i]);
35			av_freep(&rl->index_run[i]);
36			}
37			}
38
39		1619	av_cold int ff_rl_init(RLTable *rl,
40			uint8_t static_store[2][2 * MAX_RUN + MAX_LEVEL + 3])
41			{
42			int8_t max_level[MAX_RUN + 1], max_run[MAX_LEVEL + 1];
43			uint8_t index_run[MAX_RUN + 1];
44			int last, run, level, start, end, i;
45
46			/* If table is static, we can quit if rl->max_level[0] is not NULL */
47	✓✗✓✓	1619	if (static_store && rl->max_level[0])
48		3	return 0;
49
50			/* compute max_level[], max_run[] and index_run[] */
51	✓✓	4848	for (last = 0; last < 2; last++) {
52	✓✓	3232	if (last == 0) {
53		1616	start = 0;
54		1616	end = rl->last;
55			} else {
56		1616	start = rl->last;
57		1616	end = rl->n;
58			}
59
60		3232	memset(max_level, 0, MAX_RUN + 1);
61		3232	memset(max_run, 0, MAX_LEVEL + 1);
62		3232	memset(index_run, rl->n, MAX_RUN + 1);
63	✓✓	196942	for (i = start; i < end; i++) {
64		193710	run = rl->table_run[i];
65		193710	level = rl->table_level[i];
66	✓✓	193710	if (index_run[run] == rl->n)
67		82359	index_run[run] = i;
68	✓✓	193710	if (level > max_level[run])
69		193697	max_level[run] = level;
70	✓✓	193710	if (run > max_run[level])
71		146601	max_run[level] = run;
72			}
73	✓✗	3232	if (static_store)
74		3232	rl->max_level[last] = static_store[last];
75			else {
76			rl->max_level[last] = av_malloc(MAX_RUN + 1);
77			if (!rl->max_level[last])
78			goto fail;
79			}
80		3232	memcpy(rl->max_level[last], max_level, MAX_RUN + 1);
81	✓✗	3232	if (static_store)
82		3232	rl->max_run[last] = static_store[last] + MAX_RUN + 1;
83			else {
84			rl->max_run[last] = av_malloc(MAX_LEVEL + 1);
85			if (!rl->max_run[last])
86			goto fail;
87			}
88		3232	memcpy(rl->max_run[last], max_run, MAX_LEVEL + 1);
89	✓✗	3232	if (static_store)
90		3232	rl->index_run[last] = static_store[last] + MAX_RUN + MAX_LEVEL + 2;
91			else {
92			rl->index_run[last] = av_malloc(MAX_RUN + 1);
93			if (!rl->index_run[last])
94			goto fail;
95			}
96		3232	memcpy(rl->index_run[last], index_run, MAX_RUN + 1);
97			}
98		1616	return 0;
99
100			fail:
101			ff_rl_free(rl);
102			return AVERROR(ENOMEM);
103			}
104
105		895	av_cold void ff_rl_init_vlc(RLTable *rl, unsigned static_size)
106			{
107			int i, q;
108		895	VLC_TYPE table[1500][2] = {{0}};
109		895	VLC vlc = { .table = table, .table_allocated = static_size };
110	✗✓	895	av_assert0(static_size <= FF_ARRAY_ELEMS(table));
111		895	init_vlc(&vlc, 9, rl->n + 1, &rl->table_vlc[0][1], 4, 2, &rl->table_vlc[0][0], 4, 2, INIT_VLC_USE_NEW_STATIC);
112
113	✓✓	29535	for (q = 0; q < 32; q++) {
114		28640	int qmul = q * 2;
115		28640	int qadd = (q - 1) \| 1;
116
117	✓✓	28640	if (q == 0) {
118		895	qmul = 1;
119		895	qadd = 0;
120			}
121	✓✓	21047776	for (i = 0; i < vlc.table_size; i++) {
122		21019136	int code = vlc.table[i][0];
123		21019136	int len = vlc.table[i][1];
124			int level, run;
125
126	✓✓	21019136	if (len == 0) { // illegal code
127		189024	run = 66;
128		189024	level = MAX_LEVEL;
129	✓✓	20830112	} else if (len < 0) { // more bits needed
130		411072	run = 0;
131		411072	level = code;
132			} else {
133	✓✓	20419040	if (code == rl->n) { // esc
134		275104	run = 66;
135		275104	level = 0;
136			} else {
137		20143936	run = rl->table_run[code] + 1;
138		20143936	level = rl->table_level[code] * qmul + qadd;
139	✓✓	20143936	if (code >= rl->last) run += 192;
140			}
141			}
142		21019136	rl->rl_vlc[q][i].len = len;
143		21019136	rl->rl_vlc[q][i].level = level;
144		21019136	rl->rl_vlc[q][i].run = run;
145			}
146			}
147		895	}