Libav
mpegpicture.h
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1 /*
2  * Mpeg video formats-related defines and utility functions
3  *
4  * This file is part of Libav.
5  *
6  * Libav 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  * Libav 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 Libav; 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 
26 #include "libavutil/frame.h"
27 
28 #include "avcodec.h"
29 #include "motion_est.h"
30 #include "thread.h"
31 
32 #define MAX_PICTURE_COUNT 32
33 #define EDGE_WIDTH 16
34 
35 typedef struct ScratchpadContext {
41 
45 typedef struct Picture {
46  struct AVFrame *f;
48 
50  int8_t *qscale_table;
51 
52  AVBufferRef *motion_val_buf[2];
53  int16_t (*motion_val[2])[2];
54 
56  uint32_t *mb_type;
57 
60 
61  AVBufferRef *ref_index_buf[2];
62  int8_t *ref_index[2];
63 
65  uint16_t *mb_var;
66 
68  uint16_t *mc_mb_var;
69 
72 
75 
77 
78  int mb_var_sum;
80 
81  int b_frame_score; /* */
83 
84  int reference;
85  int shared;
86 
87  uint64_t encoding_error[4];
88 } Picture;
89 
95  ScratchpadContext *sc, int shared, int encoding,
96  int chroma_x_shift, int chroma_y_shift, int out_format,
97  int mb_stride, int mb_height, int b8_stride,
98  ptrdiff_t *linesize, ptrdiff_t *uvlinesize);
99 
101  ScratchpadContext *sc, int linesize);
102 
104 void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture);
105 
108 
109 int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared);
110 
111 #endif /* AVCODEC_MPEGPICTURE_H */
int ff_update_picture_tables(Picture *dst, Picture *src)
Definition: mpegpicture.c:287
AVBufferRef * mb_var_buf
Definition: mpegpicture.h:64
This structure describes decoded (raw) audio or video data.
Definition: frame.h:140
uint8_t * mb_mean
Table for MB luminance.
Definition: mpegpicture.h:71
uint8_t * edge_emu_buffer
temporary buffer for if MVs point to out-of-frame data
Definition: mpegpicture.h:36
#define Picture
Definition: vda.h:41
uint16_t * mb_var
Table for MB variances.
Definition: mpegpicture.h:65
int needs_realloc
Picture needs to be reallocated (eg due to a frame size change)
Definition: mpegpicture.h:82
int field_picture
whether or not the picture was encoded in separate fields
Definition: mpegpicture.h:76
int b_frame_score
Definition: mpegpicture.h:81
uint8_t
int ff_find_unused_picture(AVCodecContext *avctx, Picture *picture, int shared)
Definition: mpegpicture.c:398
Multithreading support functions.
Motion estimation context.
Definition: motion_est.h:42
AVBufferRef * mb_type_buf
Definition: mpegpicture.h:55
AVBufferRef * mb_mean_buf
Definition: mpegpicture.h:70
ThreadFrame tf
Definition: mpegpicture.h:47
#define src
Definition: vp8dsp.c:254
uint8_t * mbskip_table
Definition: mpegpicture.h:59
int ff_mpeg_ref_picture(AVCodecContext *avctx, Picture *dst, Picture *src)
Definition: mpegpicture.c:329
uint8_t * rd_scratchpad
scratchpad for rate distortion mb decision
Definition: mpegpicture.h:37
void ff_free_picture_tables(Picture *pic)
Definition: mpegpicture.c:412
int reference
Definition: mpegpicture.h:84
reference-counted frame API
AVBufferRef * hwaccel_priv_buf
Definition: mpegpicture.h:73
Picture.
Definition: mpegpicture.h:45
void * hwaccel_picture_private
Hardware accelerator private data.
Definition: mpegpicture.h:74
void ff_mpeg_unref_picture(AVCodecContext *avctx, Picture *picture)
Deallocate a picture.
Definition: mpegpicture.c:269
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_height, int b8_stride, ptrdiff_t *linesize, ptrdiff_t *uvlinesize)
Allocate a Picture.
Definition: mpegpicture.c:211
uint16_t * mc_mb_var
Table for motion compensated MB variances.
Definition: mpegpicture.h:68
AVBufferRef * qscale_table_buf
Definition: mpegpicture.h:49
Libavcodec external API header.
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:158
main external API structure.
Definition: avcodec.h:1409
struct AVFrame * f
Definition: mpegpicture.h:46
int ff_mpeg_framesize_alloc(AVCodecContext *avctx, MotionEstContext *me, ScratchpadContext *sc, int linesize)
Definition: mpegpicture.c:56
int8_t * qscale_table
Definition: mpegpicture.h:50
A reference to a data buffer.
Definition: buffer.h:81
AVBufferRef * mbskip_table_buf
Definition: mpegpicture.h:58
int shared
Definition: mpegpicture.h:85
uint8_t * b_scratchpad
scratchpad used for writing into write only buffers
Definition: mpegpicture.h:39
uint8_t * obmc_scratchpad
Definition: mpegpicture.h:38
AVBufferRef * mc_mb_var_buf
Definition: mpegpicture.h:67
int mb_var_sum
sum of MB variance for current frame
Definition: mpegpicture.h:78
int mc_mb_var_sum
motion compensated MB variance for current frame
Definition: mpegpicture.h:79
uint32_t * mb_type
types and macros are defined in mpegutils.h
Definition: mpegpicture.h:56