FFmpeg
mpegvideoencdsp.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_MPEGVIDEOENCDSP_H
20 #define AVCODEC_MPEGVIDEOENCDSP_H
21 
22 #include <stdint.h>
23 
24 #include "avcodec.h"
25 
26 #define BASIS_SHIFT 16
27 #define RECON_SHIFT 6
28 
29 #define EDGE_TOP 1
30 #define EDGE_BOTTOM 2
31 
32 typedef struct MpegvideoEncDSPContext {
33  int (*try_8x8basis)(int16_t rem[64], int16_t weight[64],
34  int16_t basis[64], int scale);
35  void (*add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale);
36 
37  int (*pix_sum)(uint8_t *pix, int line_size);
38  int (*pix_norm1)(uint8_t *pix, int line_size);
39 
40  void (*shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src,
41  int src_wrap, int width, int height);
42 
43  void (*draw_edges)(uint8_t *buf, int wrap, int width, int height,
44  int w, int h, int sides);
46 
48  AVCodecContext *avctx);
50  AVCodecContext *avctx);
52  AVCodecContext *avctx);
54  AVCodecContext *avctx);
56  AVCodecContext *avctx);
57 
58 #endif /* AVCODEC_MPEGVIDEOENCDSP_H */
void(* shrink[4])(uint8_t *dst, int dst_wrap, const uint8_t *src, int src_wrap, int width, int height)
void ff_mpegvideoencdsp_init(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
void ff_mpegvideoencdsp_init_mips(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
#define src
Definition: vp8dsp.c:254
void ff_mpegvideoencdsp_init_ppc(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
void(* draw_edges)(uint8_t *buf, int wrap, int width, int height, int w, int h, int sides)
uint8_t
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
Definition: undefined.txt:32
#define height
#define wrap(func)
Definition: neontest.h:65
int(* pix_norm1)(uint8_t *pix, int line_size)
int(* pix_sum)(uint8_t *pix, int line_size)
#define width
uint8_t w
Definition: llviddspenc.c:38
typedef void(APIENTRY *FF_PFNGLACTIVETEXTUREPROC)(GLenum texture)
Libavcodec external API header.
main external API structure.
Definition: avcodec.h:1568
void(* add_8x8basis)(int16_t rem[64], int16_t basis[64], int scale)
void * buf
Definition: avisynth_c.h:766
int(* try_8x8basis)(int16_t rem[64], int16_t weight[64], int16_t basis[64], int scale)
static int weight(int i, int blen, int offset)
Definition: diracdec.c:1564
void ff_mpegvideoencdsp_init_x86(MpegvideoEncDSPContext *c, AVCodecContext *avctx)
int
static int16_t basis[64][64]
void ff_mpegvideoencdsp_init_arm(MpegvideoEncDSPContext *c, AVCodecContext *avctx)