1 /*
2 * Mpeg video formats-related defines and utility functions
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 #ifndef AVCODEC_MPEGPICTURE_H
22 #define AVCODEC_MPEGPICTURE_H
23
24 #include <stdint.h>
25
27
31
32 #define MAX_PICTURE_COUNT 36
34
36 uint8_t *
edge_emu_buffer;
///< temporary buffer for if MVs point to out-of-frame data
39 uint8_t *
b_scratchpad;
///< scratchpad used for writing into write only buffers
41
42 /**
43 * Picture.
44 */
48
51
54
56 uint32_t *
mb_type;
///< types and macros are defined in mpegutils.h
57
60
63
65 uint16_t *
mb_var;
///< Table for MB variances
66
68 uint16_t *
mc_mb_var;
///< Table for motion compensated MB variances
69
73
75 uint8_t *
mb_mean;
///< Table for MB luminance
76
79
80 int field_picture;
///< whether or not the picture was encoded in separate fields
81
82 int64_t
mb_var_sum;
///< sum of MB variance for current frame
83 int64_t
mc_mb_var_sum;
///< motion compensated MB variance for current frame
84
86 int needs_realloc;
///< Picture needs to be reallocated (eg due to a frame size change)
87
90
93
94 /**
95 * Allocate a Picture.
96 * The pixels are allocated/set by calling get_buffer() if shared = 0.
97 */
100 int chroma_x_shift, int chroma_y_shift, int out_format,
101 int mb_stride, int mb_width, int mb_height, int b8_stride,
102 ptrdiff_t *
linesize, ptrdiff_t *uvlinesize);
103
106
109
112
114
115 #endif /* AVCODEC_MPEGPICTURE_H */