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[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 Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #ifndef FFMPEG_SWSCALE_INTERNAL_H
22 #define FFMPEG_SWSCALE_INTERNAL_H
23
24 #include "config.h"
25
26 #ifdef HAVE_ALTIVEC_H
27 #include <altivec.h>
28 #endif
29
30 #include "libavutil/avutil.h"
31
32 #define MAX_FILTER_SIZE 256
33
34 #define VOFW 2048
35 #define VOF (VOFW*2)
36
37 typedef int (*SwsFunc)(struct SwsContext *context, uint8_t* src[], int srcStride[], int srcSliceY,
38 int srcSliceH, uint8_t* dst[], int dstStride[]);
39
40 /* this struct should be aligned on at least 32-byte boundary */
41 typedef struct SwsContext{
42 /**
43 * info on struct for av_log
44 */
45 const AVClass *av_class;
46
47 /**
48 * Note that src, dst, srcStride, dstStride will be copied in the
49 * sws_scale() wrapper so they can be freely modified here.
50 */
51 SwsFunc swScale;
52 int srcW, srcH, dstH;
53 int chrSrcW, chrSrcH, chrDstW, chrDstH;
54 int lumXInc, chrXInc;
55 int lumYInc, chrYInc;
56 int dstFormat, srcFormat; ///< format 4:2:0 type is always YV12
57 int origDstFormat, origSrcFormat; ///< format
58 int chrSrcHSubSample, chrSrcVSubSample;
59 int chrIntHSubSample, chrIntVSubSample;
60 int chrDstHSubSample, chrDstVSubSample;
61 int vChrDrop;
62 int sliceDir;
63 double param[2];
64
65 int16_t **lumPixBuf;
66 int16_t **chrPixBuf;
67 int16_t *hLumFilter;
68 int16_t *hLumFilterPos;
69 int16_t *hChrFilter;
70 int16_t *hChrFilterPos;
71 int16_t *vLumFilter;
72 int16_t *vLumFilterPos;
73 int16_t *vChrFilter;
74 int16_t *vChrFilterPos;
75
76 uint8_t formatConvBuffer[VOF]; //FIXME dynamic alloc, but we have to change a lot of code for this to be useful
77
78 int hLumFilterSize;
79 int hChrFilterSize;
80 int vLumFilterSize;
81 int vChrFilterSize;
82 int vLumBufSize;
83 int vChrBufSize;
84
85 uint8_t *funnyYCode;
86 uint8_t *funnyUVCode;
87 int32_t *lumMmx2FilterPos;
88 int32_t *chrMmx2FilterPos;
89 int16_t *lumMmx2Filter;
90 int16_t *chrMmx2Filter;
91
92 int canMMX2BeUsed;
93
94 int lastInLumBuf;
95 int lastInChrBuf;
96 int lumBufIndex;
97 int chrBufIndex;
98 int dstY;
99 int flags;
100 void * yuvTable; // pointer to the yuv->rgb table start so it can be freed()
101 uint8_t * table_rV[256];
102 uint8_t * table_gU[256];
103 int table_gV[256];
104 uint8_t * table_bU[256];
105
106 //Colorspace stuff
107 int contrast, brightness, saturation; // for sws_getColorspaceDetails
108 int srcColorspaceTable[4];
109 int dstColorspaceTable[4];
110 int srcRange, dstRange;
111
112 #define RED_DITHER "0*8"
113 #define GREEN_DITHER "1*8"
114 #define BLUE_DITHER "2*8"
115 #define Y_COEFF "3*8"
116 #define VR_COEFF "4*8"
117 #define UB_COEFF "5*8"
118 #define VG_COEFF "6*8"
119 #define UG_COEFF "7*8"
120 #define Y_OFFSET "8*8"
121 #define U_OFFSET "9*8"
122 #define V_OFFSET "10*8"
123 #define LUM_MMX_FILTER_OFFSET "11*8"
124 #define CHR_MMX_FILTER_OFFSET "11*8+4*4*256"
125 #define DSTW_OFFSET "11*8+4*4*256*2" //do not change, it is hardcoded in the asm
126 #define ESP_OFFSET "11*8+4*4*256*2+8"
127 #define VROUNDER_OFFSET "11*8+4*4*256*2+16"
128 #define U_TEMP "11*8+4*4*256*2+24"
129 #define V_TEMP "11*8+4*4*256*2+32"
130
131 uint64_t redDither __attribute__((aligned(8)));
132 uint64_t greenDither __attribute__((aligned(8)));
133 uint64_t blueDither __attribute__((aligned(8)));
134
135 uint64_t yCoeff __attribute__((aligned(8)));
136 uint64_t vrCoeff __attribute__((aligned(8)));
137 uint64_t ubCoeff __attribute__((aligned(8)));
138 uint64_t vgCoeff __attribute__((aligned(8)));
139 uint64_t ugCoeff __attribute__((aligned(8)));
140 uint64_t yOffset __attribute__((aligned(8)));
141 uint64_t uOffset __attribute__((aligned(8)));
142 uint64_t vOffset __attribute__((aligned(8)));
143 int32_t lumMmxFilter[4*MAX_FILTER_SIZE];
144 int32_t chrMmxFilter[4*MAX_FILTER_SIZE];
145 int dstW;
146 uint64_t esp __attribute__((aligned(8)));
147 uint64_t vRounder __attribute__((aligned(8)));
148 uint64_t u_temp __attribute__((aligned(8)));
149 uint64_t v_temp __attribute__((aligned(8)));
150
151 #ifdef HAVE_ALTIVEC
152
153 vector signed short CY;
154 vector signed short CRV;
155 vector signed short CBU;
156 vector signed short CGU;
157 vector signed short CGV;
158 vector signed short OY;
159 vector unsigned short CSHIFT;
160 vector signed short *vYCoeffsBank, *vCCoeffsBank;
161
162 #endif
163
164
165 #ifdef ARCH_BFIN
166 uint32_t oy __attribute__((aligned(4)));
167 uint32_t oc __attribute__((aligned(4)));
168 uint32_t zero __attribute__((aligned(4)));
169 uint32_t cy __attribute__((aligned(4)));
170 uint32_t crv __attribute__((aligned(4)));
171 uint32_t rmask __attribute__((aligned(4)));
172 uint32_t cbu __attribute__((aligned(4)));
173 uint32_t bmask __attribute__((aligned(4)));
174 uint32_t cgu __attribute__((aligned(4)));
175 uint32_t cgv __attribute__((aligned(4)));
176 uint32_t gmask __attribute__((aligned(4)));
177 #endif
178
179 #ifdef HAVE_VIS
180 uint64_t sparc_coeffs[10] __attribute__((aligned(8)));
181 #endif
182
183 } SwsContext;
184 //FIXME check init (where 0)
185
186 SwsFunc yuv2rgb_get_func_ptr (SwsContext *c);
187 int yuv2rgb_c_init_tables (SwsContext *c, const int inv_table[4], int fullRange, int brightness, int contrast, int saturation);
188
189 void yuv2rgb_altivec_init_tables (SwsContext *c, const int inv_table[4],int brightness,int contrast, int saturation);
190 SwsFunc yuv2rgb_init_altivec (SwsContext *c);
191 void altivec_yuv2packedX (SwsContext *c,
192 int16_t *lumFilter, int16_t **lumSrc, int lumFilterSize,
193 int16_t *chrFilter, int16_t **chrSrc, int chrFilterSize,
194 uint8_t *dest, int dstW, int dstY);
195
196 const char *sws_format_name(int format);
197
198 //FIXME replace this with something faster
199 #define isPlanarYUV(x) ( \
200 (x)==PIX_FMT_YUV410P \
201 || (x)==PIX_FMT_YUV420P \
202 || (x)==PIX_FMT_YUV411P \
203 || (x)==PIX_FMT_YUV422P \
204 || (x)==PIX_FMT_YUV444P \
205 || (x)==PIX_FMT_YUV440P \
206 || (x)==PIX_FMT_NV12 \
207 || (x)==PIX_FMT_NV21 \
208 )
209 #define isYUV(x) ( \
210 (x)==PIX_FMT_UYVY422 \
211 || (x)==PIX_FMT_YUYV422 \
212 || isPlanarYUV(x) \
213 )
214 #define isGray(x) ( \
215 (x)==PIX_FMT_GRAY8 \
216 || (x)==PIX_FMT_GRAY16BE \
217 || (x)==PIX_FMT_GRAY16LE \
218 )
219 #define isGray16(x) ( \
220 (x)==PIX_FMT_GRAY16BE \
221 || (x)==PIX_FMT_GRAY16LE \
222 )
223 #define isRGB(x) ( \
224 (x)==PIX_FMT_BGR32 \
225 || (x)==PIX_FMT_RGB24 \
226 || (x)==PIX_FMT_RGB565 \
227 || (x)==PIX_FMT_RGB555 \
228 || (x)==PIX_FMT_RGB8 \
229 || (x)==PIX_FMT_RGB4 \
230 || (x)==PIX_FMT_RGB4_BYTE \
231 || (x)==PIX_FMT_MONOBLACK \
232 )
233 #define isBGR(x) ( \
234 (x)==PIX_FMT_RGB32 \
235 || (x)==PIX_FMT_BGR24 \
236 || (x)==PIX_FMT_BGR565 \
237 || (x)==PIX_FMT_BGR555 \
238 || (x)==PIX_FMT_BGR8 \
239 || (x)==PIX_FMT_BGR4 \
240 || (x)==PIX_FMT_BGR4_BYTE \
241 || (x)==PIX_FMT_MONOBLACK \
242 )
243
244 static inline int fmt_depth(int fmt)
245 {
246 switch(fmt) {
247 case PIX_FMT_BGRA:
248 case PIX_FMT_ABGR:
249 case PIX_FMT_RGBA:
250 case PIX_FMT_ARGB:
251 return 32;
252 case PIX_FMT_BGR24:
253 case PIX_FMT_RGB24:
254 return 24;
255 case PIX_FMT_BGR565:
256 case PIX_FMT_RGB565:
257 case PIX_FMT_GRAY16BE:
258 case PIX_FMT_GRAY16LE:
259 return 16;
260 case PIX_FMT_BGR555:
261 case PIX_FMT_RGB555:
262 return 15;
263 case PIX_FMT_BGR8:
264 case PIX_FMT_RGB8:
265 return 8;
266 case PIX_FMT_BGR4:
267 case PIX_FMT_RGB4:
268 case PIX_FMT_BGR4_BYTE:
269 case PIX_FMT_RGB4_BYTE:
270 return 4;
271 case PIX_FMT_MONOBLACK:
272 return 1;
273 default:
274 return 0;
275 }
276 }
277
278 extern const DECLARE_ALIGNED(8, uint64_t, ff_dither4[2]);
279 extern const DECLARE_ALIGNED(8, uint64_t, ff_dither8[2]);
280
281 #endif /* FFMPEG_SWSCALE_INTERNAL_H */