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
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
72
75
78
79 int field_picture;
///< whether or not the picture was encoded in separate fields
80
81 int64_t
mb_var_sum;
///< sum of MB variance for current frame
82 int64_t
mc_mb_var_sum;
///< motion compensated MB variance for current frame
83
85 int needs_realloc;
///< Picture needs to be reallocated (eg due to a frame size change)
86
89
92
93 /**
94 * Allocate a Picture.
95 * The pixels are allocated/set by calling get_buffer() if shared = 0.
96 */
99 int chroma_x_shift, int chroma_y_shift, int out_format,
100 int mb_stride, int mb_width, int mb_height, int b8_stride,
101 ptrdiff_t *
linesize, ptrdiff_t *uvlinesize);
102
105
108
111
113
114 #endif /* AVCODEC_MPEGPICTURE_H */
int ff_update_picture_tables(Picture *dst, Picture *src)
#define AV_NUM_DATA_POINTERS
This structure describes decoded (raw) audio or video data.
uint8_t * mb_mean
Table for MB luminance.
uint8_t * edge_emu_buffer
temporary buffer for if MVs point to out-of-frame data
uint16_t * mb_var
Table for MB variances.
int needs_realloc
Picture needs to be reallocated (eg due to a frame size change)
int field_picture
whether or not the picture was encoded in separate fields
int alloc_mb_width
mb_width used to allocate tables
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
Multithreading support functions.
Motion estimation context.
AVBufferRef * mb_type_buf
AVBufferRef * mb_mean_buf
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src)
uint8_t * rd_scratchpad
scratchpad for rate distortion mb decision
uint64_t encoding_error[AV_NUM_DATA_POINTERS]
void ff_free_picture_tables(Picture *pic)
reference-counted frame API
AVBufferRef * hwaccel_priv_buf
AVBufferRef * motion_val_buf[2]
int16_t(*[2] motion_val)[2]
void * hwaccel_picture_private
Hardware accelerator private data.
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture)
Deallocate a picture.
int ff_alloc_picture(AVCodecContext *avctx, Picture *pic, MotionEstContext *me, ScratchpadContext *sc, int shared, int encoding, int chroma_x_shift, int chroma_y_shift, int out_format, int mb_stride, int mb_width, int mb_height, int b8_stride, ptrdiff_t *linesize, ptrdiff_t *uvlinesize)
Allocate a Picture.
uint16_t * mc_mb_var
Table for motion compensated MB variances.
AVBufferRef * qscale_table_buf
int alloc_mb_height
mb_height used to allocate tables
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
main external API structure.
int64_t mc_mb_var_sum
motion compensated MB variance for current frame
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me, ScratchpadContext *sc, int linesize)
A reference to a data buffer.
AVBufferRef * mbskip_table_buf
uint8_t * b_scratchpad
scratchpad used for writing into write only buffers
uint8_t * obmc_scratchpad
AVBufferRef * mc_mb_var_buf
uint32_t * mb_type
types and macros are defined in mpegutils.h
int64_t mb_var_sum
sum of MB variance for current frame
AVBufferRef * ref_index_buf[2]