73447431e00027d00edf7c3d73b6d89b610c5c6b
[libav.git] / libswscale / swscale_internal.h
1 /*
2 * Copyright (C) 2001-2003 Michael Niedermayer <michaelni@gmx.at>
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 St, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef SWSCALE_INTERNAL_H
22 #define SWSCALE_INTERNAL_H
23
24 #ifdef HAVE_ALTIVEC_H
25 #include <altivec.h>
26 #endif
27
28 #include "avutil.h"
29
30 #ifdef CONFIG_DARWIN
31 #define AVV(x...) (x)
32 #else
33 #define AVV(x...) {x}
34 #endif
35
36 #define MAX_FILTER_SIZE 256
37
38 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
39 int srcSliceH, uint8_t* dst[], int dstStride[]);
40
41 /* this struct should be aligned on at least 32-byte boundary */
42 typedef struct SwsContext{
43 /**
44 * info on struct for av_log
45 */
46 AVClass *av_class;
47
48 /**
49 *
50 * Note the src,dst,srcStride,dstStride will be copied, in the sws_scale() warper so they can freely be modified here
51 */
52 SwsFunc swScale;
53 int srcW, srcH, dstH;
54 int chrSrcW, chrSrcH, chrDstW, chrDstH;
55 int lumXInc, chrXInc;
56 int lumYInc, chrYInc;
57 int dstFormat, srcFormat; ///< format 4:2:0 type is always YV12
58 int origDstFormat, origSrcFormat; ///< format
59 int chrSrcHSubSample, chrSrcVSubSample;
60 int chrIntHSubSample, chrIntVSubSample;
61 int chrDstHSubSample, chrDstVSubSample;
62 int vChrDrop;
63 int sliceDir;
64 double param[2];
65
66 int16_t **lumPixBuf;
67 int16_t **chrPixBuf;
68 int16_t *hLumFilter;
69 int16_t *hLumFilterPos;
70 int16_t *hChrFilter;
71 int16_t *hChrFilterPos;
72 int16_t *vLumFilter;
73 int16_t *vLumFilterPos;
74 int16_t *vChrFilter;
75 int16_t *vChrFilterPos;
76
77 uint8_t formatConvBuffer[4000]; //FIXME dynamic alloc, but we have to change a lot of code for this to be useful
78
79 int hLumFilterSize;
80 int hChrFilterSize;
81 int vLumFilterSize;
82 int vChrFilterSize;
83 int vLumBufSize;
84 int vChrBufSize;
85
86 uint8_t *funnyYCode;
87 uint8_t *funnyUVCode;
88 int32_t *lumMmx2FilterPos;
89 int32_t *chrMmx2FilterPos;
90 int16_t *lumMmx2Filter;
91 int16_t *chrMmx2Filter;
92
93 int canMMX2BeUsed;
94
95 int lastInLumBuf;
96 int lastInChrBuf;
97 int lumBufIndex;
98 int chrBufIndex;
99 int dstY;
100 int flags;
101 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
102 uint8_t * table_rV[256];
103 uint8_t * table_gU[256];
104 int table_gV[256];
105 uint8_t * table_bU[256];
106
107 //Colorspace stuff
108 int contrast, brightness, saturation; // for sws_getColorspaceDetails
109 int srcColorspaceTable[4];
110 int dstColorspaceTable[4];
111 int srcRange, dstRange;
112
113 #define RED_DITHER "0*8"
114 #define GREEN_DITHER "1*8"
115 #define BLUE_DITHER "2*8"
116 #define Y_COEFF "3*8"
117 #define VR_COEFF "4*8"
118 #define UB_COEFF "5*8"
119 #define VG_COEFF "6*8"
120 #define UG_COEFF "7*8"
121 #define Y_OFFSET "8*8"
122 #define U_OFFSET "9*8"
123 #define V_OFFSET "10*8"
124 #define LUM_MMX_FILTER_OFFSET "11*8"
125 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
126 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the asm
127 #define ESP_OFFSET "11*8+4*4*256*2+8"
128 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
129 #define U_TEMP "11*8+4*4*256*2+24"
130 #define V_TEMP "11*8+4*4*256*2+32"
131
132 uint64_t redDither __attribute__((aligned(8)));
133 uint64_t greenDither __attribute__((aligned(8)));
134 uint64_t blueDither __attribute__((aligned(8)));
135
136 uint64_t yCoeff __attribute__((aligned(8)));
137 uint64_t vrCoeff __attribute__((aligned(8)));
138 uint64_t ubCoeff __attribute__((aligned(8)));
139 uint64_t vgCoeff __attribute__((aligned(8)));
140 uint64_t ugCoeff __attribute__((aligned(8)));
141 uint64_t yOffset __attribute__((aligned(8)));
142 uint64_t uOffset __attribute__((aligned(8)));
143 uint64_t vOffset __attribute__((aligned(8)));
144 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
145 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
146 int dstW;
147 uint64_t esp __attribute__((aligned(8)));
148 uint64_t vRounder __attribute__((aligned(8)));
149 uint64_t u_temp __attribute__((aligned(8)));
150 uint64_t v_temp __attribute__((aligned(8)));
151
152 #ifdef HAVE_ALTIVEC
153
154 vector signed short CY;
155 vector signed short CRV;
156 vector signed short CBU;
157 vector signed short CGU;
158 vector signed short CGV;
159 vector signed short OY;
160 vector unsigned short CSHIFT;
161 vector signed short *vYCoeffsBank, *vCCoeffsBank;
162
163 #endif
164
165
166 #ifdef ARCH_BFIN
167 uint32_t oy __attribute__((aligned(4)));
168 uint32_t oc __attribute__((aligned(4)));
169 uint32_t zero __attribute__((aligned(4)));
170 uint32_t cy __attribute__((aligned(4)));
171 uint32_t crv __attribute__((aligned(4)));
172 uint32_t rmask __attribute__((aligned(4)));
173 uint32_t cbu __attribute__((aligned(4)));
174 uint32_t bmask __attribute__((aligned(4)));
175 uint32_t cgu __attribute__((aligned(4)));
176 uint32_t cgv __attribute__((aligned(4)));
177 uint32_t gmask __attribute__((aligned(4)));
178 #endif
179
180
181 } SwsContext;
182 //FIXME check init (where 0)
183
184 SwsFunc yuv2rgb_get_func_ptr (SwsContext *c);
185 int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
186
187 char *sws_format_name(int format);
188
189 //FIXME replace this with something faster
190 #define isPlanarYUV(x) ( \
191 (x)==PIX_FMT_YUV410P \
192 || (x)==PIX_FMT_YUV420P \
193 || (x)==PIX_FMT_YUV411P \
194 || (x)==PIX_FMT_YUV422P \
195 || (x)==PIX_FMT_YUV444P \
196 || (x)==PIX_FMT_NV12 \
197 || (x)==PIX_FMT_NV21 \
198 )
199 #define isYUV(x) ( \
200 (x)==PIX_FMT_UYVY422 \
201 || (x)==PIX_FMT_YUYV422 \
202 || isPlanarYUV(x) \
203 )
204 #define isGray(x) ( \
205 (x)==PIX_FMT_GRAY8 \
206 || (x)==PIX_FMT_GRAY16BE \
207 || (x)==PIX_FMT_GRAY16LE \
208 )
209 #define isGray16(x) ( \
210 (x)==PIX_FMT_GRAY16BE \
211 || (x)==PIX_FMT_GRAY16LE \
212 )
213 #define isRGB(x) ( \
214 (x)==PIX_FMT_BGR32 \
215 || (x)==PIX_FMT_RGB24 \
216 || (x)==PIX_FMT_RGB565 \
217 || (x)==PIX_FMT_RGB555 \
218 || (x)==PIX_FMT_RGB8 \
219 || (x)==PIX_FMT_RGB4 \
220 || (x)==PIX_FMT_RGB4_BYTE \
221 || (x)==PIX_FMT_MONOBLACK \
222 )
223 #define isBGR(x) ( \
224 (x)==PIX_FMT_RGB32 \
225 || (x)==PIX_FMT_BGR24 \
226 || (x)==PIX_FMT_BGR565 \
227 || (x)==PIX_FMT_BGR555 \
228 || (x)==PIX_FMT_BGR8 \
229 || (x)==PIX_FMT_BGR4 \
230 || (x)==PIX_FMT_BGR4_BYTE \
231 || (x)==PIX_FMT_MONOBLACK \
232 )
233
234 static inline int fmt_depth(int fmt)
235 {
236 switch(fmt) {
237 case PIX_FMT_BGRA:
238 case PIX_FMT_ABGR:
239 case PIX_FMT_RGBA:
240 case PIX_FMT_ARGB:
241 return 32;
242 case PIX_FMT_BGR24:
243 case PIX_FMT_RGB24:
244 return 24;
245 case PIX_FMT_BGR565:
246 case PIX_FMT_RGB565:
247 case PIX_FMT_GRAY16BE:
248 case PIX_FMT_GRAY16LE:
249 return 16;
250 case PIX_FMT_BGR555:
251 case PIX_FMT_RGB555:
252 return 15;
253 case PIX_FMT_BGR8:
254 case PIX_FMT_RGB8:
255 return 8;
256 case PIX_FMT_BGR4:
257 case PIX_FMT_RGB4:
258 case PIX_FMT_BGR4_BYTE:
259 case PIX_FMT_RGB4_BYTE:
260 return 4;
261 case PIX_FMT_MONOBLACK:
262 return 1;
263 default:
264 return 0;
265 }
266 }
267
268 #endif