FFmpeg coverage

Line	Branch	Exec	Source
1			/*
2			* Constants for DV codec
3			* Copyright (c) 2002 Fabrice Bellard
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			* Constants for DV codec.
25			*/
26
27			#ifndef AVCODEC_DV_H
28			#define AVCODEC_DV_H
29
30			#include "avcodec.h"
31			#include "dv_profile.h"
32			#include "me_cmp.h"
33			#include "vlc.h"
34			#include "idctdsp.h"
35
36			typedef struct DVwork_chunk {
37			uint16_t buf_offset;
38			uint16_t mb_coordinates[5];
39			} DVwork_chunk;
40
41			typedef struct DVVideoContext {
42			AVClass *avclass;
43			const AVDVProfile *sys;
44			const AVFrame *frame;
45			AVCodecContext *avctx;
46			uint8_t *buf;
47
48			uint8_t dv_zigzag[2][64];
49
50			void (get_pixels)(int16_t block, const uint8_t *pixels, ptrdiff_t linesize);
51			void (fdct[2])(int16_t block);
52			void (idct_put[2])(uint8_t dest, ptrdiff_t stride, int16_t *block);
53			me_cmp_func ildct_cmp;
54			DVwork_chunk work_chunks[4 * 12 * 27];
55			uint32_t idct_factor[2 * 4 * 16 * 64];
56			IDCTDSPContext idsp;
57
58			int quant_deadzone;
59			} DVVideoContext;
60
61			enum dv_section_type {
62			dv_sect_header = 0x1f,
63			dv_sect_subcode = 0x3f,
64			dv_sect_vaux = 0x56,
65			dv_sect_audio = 0x76,
66			dv_sect_video = 0x96,
67			};
68
69			enum dv_pack_type {
70			dv_header525 = 0x3f, /* see dv_write_pack for important details on */
71			dv_header625 = 0xbf, /* these two packs */
72			dv_timecode = 0x13,
73			dv_audio_source = 0x50,
74			dv_audio_control = 0x51,
75			dv_audio_recdate = 0x52,
76			dv_audio_rectime = 0x53,
77			dv_video_source = 0x60,
78			dv_video_control = 0x61,
79			dv_video_recdate = 0x62,
80			dv_video_rectime = 0x63,
81			dv_unknown_pack = 0xff,
82			};
83
84			#define DV_PROFILE_IS_HD(p) ((p)->video_stype & 0x10)
85			#define DV_PROFILE_IS_1080i50(p) (((p)->video_stype == 0x14) && ((p)->dsf == 1))
86			#define DV_PROFILE_IS_1080i60(p) (((p)->video_stype == 0x14) && ((p)->dsf == 0))
87			#define DV_PROFILE_IS_720p50(p) (((p)->video_stype == 0x18) && ((p)->dsf == 1))
88
89			/**
90			* largest possible DV frame, in bytes (1080i50)
91			*/
92			#define DV_MAX_FRAME_SIZE 576000
93
94			/**
95			* maximum number of blocks per macroblock in any DV format
96			*/
97			#define DV_MAX_BPM 8
98
99			int ff_dv_init_dynamic_tables(DVVideoContext s, const AVDVProfile d);
100
101			int ff_dvvideo_init(AVCodecContext *avctx);
102
103		2023	static inline int dv_work_pool_size(const AVDVProfile *d)
104			{
105		2023	int size = d->n_difchan * d->difseg_size * 27;
106	3/4 ✓ Branch 0 taken 404 times. ✓ Branch 1 taken 1619 times. ✓ Branch 2 taken 404 times. ✗ Branch 3 not taken.	2023	if (DV_PROFILE_IS_1080i50(d))
107		404	size -= 3 * 27;
108	3/4 ✓ Branch 0 taken 405 times. ✓ Branch 1 taken 1618 times. ✓ Branch 2 taken 405 times. ✗ Branch 3 not taken.	2023	if (DV_PROFILE_IS_720p50(d))
109		405	size -= 4 * 27;
110		2023	return size;
111			}
112
113		6072840	static inline void dv_calculate_mb_xy(DVVideoContext *s,
114			DVwork_chunk *work_chunk,
115			int m, int mb_x, int mb_y)
116			{
117		6072840	*mb_x = work_chunk->mb_coordinates[m] & 0xff;
118		6072840	*mb_y = work_chunk->mb_coordinates[m] >> 8;
119
120			/* We work with 720p frames split in half.
121			* The odd half-frame (chan == 2,3) is displaced :-( */
122	4/4 ✓ Branch 0 taken 1093500 times. ✓ Branch 1 taken 4979340 times. ✓ Branch 2 taken 540000 times. ✓ Branch 3 taken 553500 times.	6072840	if (s->sys->height == 720 && !(s->buf[1] & 0x0C))
123			/* shifting the Y coordinate down by 72/2 macro blocks */
124	2/2 ✓ Branch 0 taken 432000 times. ✓ Branch 1 taken 108000 times.	540000	mb_y -= (mb_y > 17) ? 18 : -72;
125		6072840	}
126
127			#endif /* AVCODEC_DV_H */
128