fixing alt_scan for the first frame (variable was reset)
[libav.git] / libavcodec / dsputil.h
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1/*
2 * DSP utils
3 * Copyright (c) 2000, 2001, 2002 Fabrice Bellard.
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 */
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19#ifndef DSPUTIL_H
20#define DSPUTIL_H
21
22#include "common.h"
43f1708f 23#include "avcodec.h"
de6d9b64 24
44eb4951 25//#define DEBUG
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26/* dct code */
27typedef short DCTELEM;
28
03c94ede 29void fdct_ifast (DCTELEM *data);
28db7fce 30void ff_jpeg_fdct_islow (DCTELEM *data);
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31
32void j_rev_dct (DCTELEM *data);
33
3f09f52a 34void ff_fdct_mmx(DCTELEM *block);
de6d9b64 35
e0eac44e 36/* encoding scans */
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37extern const UINT8 ff_alternate_horizontal_scan[64];
38extern const UINT8 ff_alternate_vertical_scan[64];
39extern const UINT8 ff_zigzag_direct[64];
5a240838 40
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41/* pixel operations */
42#define MAX_NEG_CROP 384
43
44/* temporary */
45extern UINT32 squareTbl[512];
0cfa9713 46extern UINT8 cropTbl[256 + 2 * MAX_NEG_CROP];
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47
48void dsputil_init(void);
49
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50/* minimum alignment rules ;)
51if u notice errors in the align stuff, need more alignment for some asm code for some cpu
52or need to use a function with less aligned data then send a mail to the ffmpeg-dev list, ...
53
54!warning these alignments might not match reallity, (missing attribute((align)) stuff somewhere possible)
55i (michael) didnt check them, these are just the alignents which i think could be reached easily ...
de6d9b64 56
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57!future video codecs might need functions with less strict alignment
58*/
59
60/* pixel ops : interface with DCT */
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61extern void (*get_pixels)(DCTELEM *block/*align 16*/, const UINT8 *pixels/*align 8*/, int line_size);
62extern void (*diff_pixels)(DCTELEM *block/*align 16*/, const UINT8 *s1/*align 8*/, const UINT8 *s2/*align 8*/, int stride);
63extern void (*put_pixels_clamped)(const DCTELEM *block/*align 16*/, UINT8 *pixels/*align 8*/, int line_size);
64extern void (*add_pixels_clamped)(const DCTELEM *block/*align 16*/, UINT8 *pixels/*align 8*/, int line_size);
65extern void (*gmc1)(UINT8 *dst/*align 8*/, UINT8 *src/*align 1*/, int srcStride, int h, int x16, int y16, int rounder);
66extern void (*clear_blocks)(DCTELEM *blocks/*align 16*/);
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67extern int (*pix_sum)(UINT8 * pix, int line_size);
68extern int (*pix_norm1)(UINT8 * pix, int line_size);
69
44eb4951 70
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71
72void get_pixels_c(DCTELEM *block, const UINT8 *pixels, int line_size);
9dbcbd92 73void diff_pixels_c(DCTELEM *block, const UINT8 *s1, const UINT8 *s2, int stride);
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74void put_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
75void add_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
649c00c9 76void clear_blocks_c(DCTELEM *blocks);
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77
78/* add and put pixel (decoding) */
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79// blocksizes for op_pixels_func are 8x4,8x8 16x8 16x16
80typedef void (*op_pixels_func)(UINT8 *block/*align width (8 or 16)*/, const UINT8 *pixels/*align 1*/, int line_size, int h);
81typedef void (*qpel_mc_func)(UINT8 *dst/*align width (8 or 16)*/, UINT8 *src/*align 1*/, int stride);
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82
83extern op_pixels_func put_pixels_tab[2][4];
84extern op_pixels_func avg_pixels_tab[2][4];
85extern op_pixels_func put_no_rnd_pixels_tab[2][4];
86extern op_pixels_func avg_no_rnd_pixels_tab[2][4];
87extern qpel_mc_func put_qpel_pixels_tab[2][16];
88extern qpel_mc_func avg_qpel_pixels_tab[2][16];
89extern qpel_mc_func put_no_rnd_qpel_pixels_tab[2][16];
90extern qpel_mc_func avg_no_rnd_qpel_pixels_tab[2][16];
91
92#define CALL_2X_PIXELS(a, b, n)\
93static void a(uint8_t *block, const uint8_t *pixels, int line_size, int h){\
94 b(block , pixels , line_size, h);\
95 b(block+n, pixels+n, line_size, h);\
96}
44eb4951 97
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98/* motion estimation */
99
b7c27ee6 100typedef int (*op_pixels_abs_func)(UINT8 *blk1/*align width (8 or 16)*/, UINT8 *blk2/*align 1*/, int line_size);
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101
102extern op_pixels_abs_func pix_abs16x16;
103extern op_pixels_abs_func pix_abs16x16_x2;
104extern op_pixels_abs_func pix_abs16x16_y2;
105extern op_pixels_abs_func pix_abs16x16_xy2;
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106extern op_pixels_abs_func pix_abs8x8;
107extern op_pixels_abs_func pix_abs8x8_x2;
108extern op_pixels_abs_func pix_abs8x8_y2;
109extern op_pixels_abs_func pix_abs8x8_xy2;
110
111int pix_abs16x16_c(UINT8 *blk1, UINT8 *blk2, int lx);
112int pix_abs16x16_x2_c(UINT8 *blk1, UINT8 *blk2, int lx);
113int pix_abs16x16_y2_c(UINT8 *blk1, UINT8 *blk2, int lx);
114int pix_abs16x16_xy2_c(UINT8 *blk1, UINT8 *blk2, int lx);
de6d9b64 115
2ad1516a 116void block_permute(INT16 *block, UINT8 *permutation);
e0eac44e 117
3d03c0a2 118#if defined(HAVE_MMX)
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119
120#define MM_MMX 0x0001 /* standard MMX */
121#define MM_3DNOW 0x0004 /* AMD 3DNOW */
122#define MM_MMXEXT 0x0002 /* SSE integer functions or AMD MMX ext */
123#define MM_SSE 0x0008 /* SSE functions */
124#define MM_SSE2 0x0010 /* PIV SSE2 functions */
125
126extern int mm_flags;
127
128int mm_support(void);
129
130static inline void emms(void)
131{
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132 __asm __volatile ("emms;":::"memory");
133}
134
135#define emms_c() \
136{\
137 if (mm_flags & MM_MMX)\
138 emms();\
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139}
140
141#define __align8 __attribute__ ((aligned (8)))
142
143void dsputil_init_mmx(void);
57060b1e 144void dsputil_set_bit_exact_mmx(void);
de6d9b64 145
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146#elif defined(ARCH_ARMV4L)
147
148#define emms_c()
149
150/* This is to use 4 bytes read to the IDCT pointers for some 'zero'
151 line ptimizations */
152#define __align8 __attribute__ ((aligned (4)))
153
154void dsputil_init_armv4l(void);
155
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156#elif defined(HAVE_MLIB)
157
158#define emms_c()
159
160/* SPARC/VIS IDCT needs 8-byte aligned DCT blocks */
161#define __align8 __attribute__ ((aligned (8)))
162
163void dsputil_init_mlib(void);
164
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165#elif defined(ARCH_ALPHA)
166
167#define emms_c()
168#define __align8 __attribute__ ((aligned (8)))
169
170void dsputil_init_alpha(void);
171
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172#elif defined(ARCH_POWERPC)
173
174#define emms_c()
175#define __align8 __attribute__ ((aligned (16)))
176
ab6c65f6 177void dsputil_init_ppc(void);
59925ef2 178
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179#elif defined(HAVE_MMI)
180
181#define emms_c()
182
183#define __align8 __attribute__ ((aligned (16)))
184
185void dsputil_init_mmi(void);
186
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187#else
188
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189#define emms_c()
190
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191#define __align8
192
193#endif
194
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195#ifdef __GNUC__
196
197struct unaligned_64 { uint64_t l; } __attribute__((packed));
198struct unaligned_32 { uint32_t l; } __attribute__((packed));
199
200#define LD32(a) (((const struct unaligned_32 *) (a))->l)
201#define LD64(a) (((const struct unaligned_64 *) (a))->l)
202
203#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
204
205#else /* __GNUC__ */
206
207#define LD32(a) (*((uint32_t*)(a)))
208#define LD64(a) (*((uint64_t*)(a)))
209
210#define ST32(a, b) *((uint32_t*)(a)) = (b)
211
212#endif /* !__GNUC__ */
213
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214/* PSNR */
215void get_psnr(UINT8 *orig_image[3], UINT8 *coded_image[3],
216 int orig_linesize[3], int coded_linesize,
217 AVCodecContext *avctx);
218
de6d9b64 219#endif