FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* Copyright (c) 2000-2002 Fabrice Bellard
3			* Copyright (c) 2002-2004 Michael Niedermayer
4			*
5			* This file is part of FFmpeg.
6			*
7			* FFmpeg is free software; you can redistribute it and/or
8			* modify it under the terms of the GNU Lesser General Public
9			* License as published by the Free Software Foundation; either
10			* version 2.1 of the License, or (at your option) any later version.
11			*
12			* FFmpeg is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15			* Lesser General Public License for more details.
16			*
17			* You should have received a copy of the GNU Lesser General Public
18			* License along with FFmpeg; if not, write to the Free Software
19			* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20			*/
21
22			/**
23			* @file
24			* rl header.
25			*/
26
27			#ifndef AVCODEC_RL_H
28			#define AVCODEC_RL_H
29
30			#include <stdint.h>
31
32			#include "vlc.h"
33
34			/* run length table */
35			#define MAX_RUN 64
36			#define MAX_LEVEL 64
37
38			/** RLTable. */
39			typedef struct RLTable {
40			int n; ///< number of entries of table_vlc minus 1
41			int last; ///< number of values for last = 0
42			const uint16_t (*table_vlc)[2];
43			const int8_t *table_run;
44			const int8_t *table_level;
45			uint8_t *index_run[2]; ///< encoding only
46			int8_t *max_level[2]; ///< encoding & decoding
47			int8_t *max_run[2]; ///< encoding & decoding
48			RL_VLC_ELEM *rl_vlc[32]; ///< decoding only
49			} RLTable;
50
51			/**
52			* Initialize index_run, max_level and max_run from n, last, table_vlc,
53			* table_run and table_level.
54			* @param static_store static uint8_t array[2][2*MAX_RUN + MAX_LEVEL + 3]
55			* to hold the level and run tables.
56			* @note This function does not touch rl_vlc at all, hence there is no need
57			* to synchronize calls to ff_rl_init() and ff_rl_init_vlc() using the
58			* same RLTable.
59			*/
60			void ff_rl_init(RLTable rl, uint8_t static_store[2][2MAX_RUN + MAX_LEVEL + 3]);
61
62			/**
63			* Initialize rl_vlc from n, last, table_vlc, table_run and table_level.
64			* All rl_vlc pointers to be initialized must already point to a static
65			* buffer of `static_size` RL_VLC_ELEM elements; if a pointer is NULL,
66			* initializing further VLCs stops.
67			* @note This function does not touch what ff_rl_init() initializes at all,
68			* hence there is no need to synchronize calls to ff_rl_init() and
69			* ff_rl_init_vlc() using the same RLTable.
70			*/
71			void ff_rl_init_vlc(RLTable *rl, unsigned static_size);
72
73			#define INIT_VLC_RL(rl, static_size)\
74			{\
75			static RL_VLC_ELEM rl_vlc_table[32][static_size];\
76			\
77			for (int q = 0; q < 32; q++) \
78			rl.rl_vlc[q] = rl_vlc_table[q]; \
79			\
80			ff_rl_init_vlc(&rl, static_size); \
81			}
82
83			#define INIT_FIRST_VLC_RL(rl, static_size) \
84			do { \
85			static RL_VLC_ELEM rl_vlc_table[static_size]; \
86			\
87			rl.rl_vlc[0] = rl_vlc_table; \
88			ff_rl_init_vlc(&rl, static_size); \
89			} while (0)
90
91		38491122	static inline int get_rl_index(const RLTable *rl, int last, int run, int level)
92			{
93			int index;
94		38491122	index = rl->index_run[last][run];
95	2/2 ✓ Branch 0 taken 7275567 times. ✓ Branch 1 taken 31215555 times.	38491122	if (index >= rl->n)
96		7275567	return rl->n;
97	2/2 ✓ Branch 0 taken 5920672 times. ✓ Branch 1 taken 25294883 times.	31215555	if (level > rl->max_level[last][run])
98		5920672	return rl->n;
99		25294883	return index + level - 1;
100			}
101
102			#endif /* AVCODEC_RL_H */
103