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me_cmp.h
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 #ifndef AVCODEC_ME_CMP_H
20 #define AVCODEC_ME_CMP_H
21 
22 #include <stdint.h>
23 
24 #include "avcodec.h"
25 
26 extern uint32_t ff_square_tab[512];
27 
28 
29 /* minimum alignment rules ;)
30  * If you notice errors in the align stuff, need more alignment for some ASM code
31  * for some CPU or need to use a function with less aligned data then send a mail
32  * to the ffmpeg-devel mailing list, ...
33  *
34  * !warning These alignments might not match reality, (missing attribute((align))
35  * stuff somewhere possible).
36  * I (Michael) did not check them, these are just the alignments which I think
37  * could be reached easily ...
38  *
39  * !future video codecs might need functions with less strict alignment
40  */
41 
42 struct MpegEncContext;
43 /* Motion estimation:
44  * h is limited to { width / 2, width, 2 * width },
45  * but never larger than 16 and never smaller than 2.
46  * Although currently h < 4 is not used as functions with
47  * width < 8 are neither used nor implemented. */
48 typedef int (*me_cmp_func)(struct MpegEncContext *c,
49  uint8_t *blk1 /* align width (8 or 16) */,
50  uint8_t *blk2 /* align 1 */, ptrdiff_t stride,
51  int h);
52 
53 typedef struct MECmpContext {
54  int (*sum_abs_dctelem)(int16_t *block /* align 16 */);
55 
56  me_cmp_func sad[6]; /* identical to pix_absAxA except additional void * */
70 
75  me_cmp_func ildct_cmp[6]; // only width 16 used
76  me_cmp_func frame_skip_cmp[6]; // only width 8 used
77 
80 } MECmpContext;
81 
82 void ff_me_cmp_init_static(void);
83 
84 int ff_check_alignment(void);
85 
92 
94 
96 
97 #endif /* AVCODEC_ME_CMP_H */
me_cmp_func frame_skip_cmp[6]
Definition: me_cmp.h:76
me_cmp_func w53[6]
Definition: me_cmp.h:66
me_cmp_func dct_max[6]
Definition: me_cmp.h:68
void ff_me_cmp_init_ppc(MECmpContext *c, AVCodecContext *avctx)
Definition: me_cmp.c:726
me_cmp_func me_pre_cmp[6]
Definition: me_cmp.h:71
me_cmp_func dct_sad[6]
Definition: me_cmp.h:59
me_cmp_func hadamard8_diff[6]
Definition: me_cmp.h:58
static int16_t block[64]
Definition: dct.c:115
uint8_t
void ff_me_cmp_init_static(void)
Definition: me_cmp.c:980
me_cmp_func mb_cmp[6]
Definition: me_cmp.h:74
me_cmp_func dct264_sad[6]
Definition: me_cmp.h:69
me_cmp_func nsse[6]
Definition: me_cmp.h:65
void ff_me_cmp_init_mips(MECmpContext *c, AVCodecContext *avctx)
void ff_me_cmp_init_alpha(MECmpContext *c, AVCodecContext *avctx)
Definition: me_cmp_alpha.c:305
me_cmp_func pix_abs[2][4]
Definition: me_cmp.h:78
me_cmp_func bit[6]
Definition: me_cmp.h:61
void ff_me_cmp_init(MECmpContext *c, AVCodecContext *avctx)
Definition: me_cmp.c:1009
me_cmp_func vsse[6]
Definition: me_cmp.h:64
me_cmp_func vsad[6]
Definition: me_cmp.h:63
static av_always_inline int cmp(MpegEncContext *s, const int x, const int y, const int subx, const int suby, const int size, const int h, int ref_index, int src_index, me_cmp_func cmp_func, me_cmp_func chroma_cmp_func, const int flags)
compares a block (either a full macroblock or a partition thereof) against a proposed motion-compensa...
Definition: motion_est.c:260
int(* me_cmp_func)(struct MpegEncContext *c, uint8_t *blk1, uint8_t *blk2, ptrdiff_t stride, int h)
Definition: me_cmp.h:48
void ff_set_cmp(MECmpContext *c, me_cmp_func *cmp, int type)
Definition: me_cmp.c:440
me_cmp_func rd[6]
Definition: me_cmp.h:62
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1502
GLint GLenum type
Definition: opengl_enc.c:105
int ff_check_alignment(void)
Definition: me_cmp.c:988
me_cmp_func median_sad[6]
Definition: me_cmp.h:79
me_cmp_func me_cmp[6]
Definition: me_cmp.h:72
me_cmp_func sad[6]
Definition: me_cmp.h:56
me_cmp_func sse[6]
Definition: me_cmp.h:57
MpegEncContext.
Definition: mpegvideo.h:78
int
static double c[64]
me_cmp_func me_sub_cmp[6]
Definition: me_cmp.h:73
void ff_me_cmp_init_arm(MECmpContext *c, AVCodecContext *avctx)
int(* sum_abs_dctelem)(int16_t *block)
Definition: me_cmp.h:54
me_cmp_func quant_psnr[6]
Definition: me_cmp.h:60
me_cmp_func w97[6]
Definition: me_cmp.h:67
void ff_dsputil_init_dwt(MECmpContext *c)
Definition: snow_dwt.c:842
#define stride
uint32_t ff_square_tab[512]
Definition: me_cmp.c:32
void ff_me_cmp_init_x86(MECmpContext *c, AVCodecContext *avctx)
me_cmp_func ildct_cmp[6]
Definition: me_cmp.h:75