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vo_mga: minor code cleanup
[mplayer.git] / libmpcodecs / vf_2xsai.c
blobdc33d9fccf9b9a8aafd156f4447107806b9fe214
1 /*
2 * This file is part of MPlayer.
3 *
4 * MPlayer is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * MPlayer 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
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with MPlayer; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
17 */
18
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <inttypes.h>
23
24 #include "config.h"
25 #include "mp_msg.h"
26
27 #include "img_format.h"
28 #include "mp_image.h"
29 #include "vf.h"
30
31 //===========================================================================//
32
33 /* FIXME: these all belong in the context, not as globals! */
34
35 static uint32_t colorMask = 0xF7DEF7DE;
36 static uint32_t lowPixelMask = 0x08210821;
37 static uint32_t qcolorMask = 0xE79CE79C;
38 static uint32_t qlowpixelMask = 0x18631863;
39 static uint32_t redblueMask = 0xF81F;
40 static uint32_t greenMask = 0x7E0;
41 static int PixelsPerMask = 2;
42
43 #define makecol(r,g,b) (r+(g<<8)+(b<<16))
44 #define makecol_depth(d,r,g,b) (r+(g<<8)+(b<<16))
45
46 static int Init_2xSaI(int d)
47 {
48
49 int minr = 0, ming = 0, minb = 0;
50 int i;
51
52 // if (d != 15 && d != 16 && d != 24 && d != 32)
53 // return -1;
54
55 /* Get lowest color bit */
56 for (i = 0; i < 255; i++) {
57 if (!minr)
58 minr = makecol(i, 0, 0);
59 if (!ming)
60 ming = makecol(0, i, 0);
61 if (!minb)
62 minb = makecol(0, 0, i);
63 }
64
65 colorMask = (makecol_depth(d, 255, 0, 0) - minr) | (makecol_depth(d, 0, 255, 0) - ming) | (makecol_depth(d, 0, 0, 255) - minb);
66 lowPixelMask = minr | ming | minb;
67 qcolorMask = (makecol_depth(d, 255, 0, 0) - 3 * minr) | (makecol_depth(d, 0, 255, 0) - 3 * ming) | (makecol_depth(d, 0, 0, 255) - 3 * minb);
68 qlowpixelMask = (minr * 3) | (ming * 3) | (minb * 3);
69 redblueMask = makecol_depth(d, 255, 0, 255);
70 greenMask = makecol_depth(d, 0, 255, 0);
71
72 PixelsPerMask = (d <= 16) ? 2 : 1;
73
74 if (PixelsPerMask == 2) {
75 colorMask |= (colorMask << 16);
76 qcolorMask |= (qcolorMask << 16);
77 lowPixelMask |= (lowPixelMask << 16);
78 qlowpixelMask |= (qlowpixelMask << 16);
79 }
80
81 // TRACE("Color Mask: 0x%lX\n", colorMask);
82 // TRACE("Low Pixel Mask: 0x%lX\n", lowPixelMask);
83 // TRACE("QColor Mask: 0x%lX\n", qcolorMask);
84 // TRACE("QLow Pixel Mask: 0x%lX\n", qlowpixelMask);
85
86 return 0;
87 }
88
89
90 #define GET_RESULT(A, B, C, D) ((A != C || A != D) - (B != C || B != D))
91
92 #define INTERPOLATE(A, B) (((A & colorMask) >> 1) + ((B & colorMask) >> 1) + (A & B & lowPixelMask))
93
94 #define Q_INTERPOLATE(A, B, C, D) ((A & qcolorMask) >> 2) + ((B & qcolorMask) >> 2) + ((C & qcolorMask) >> 2) + ((D & qcolorMask) >> 2) \
95 + ((((A & qlowpixelMask) + (B & qlowpixelMask) + (C & qlowpixelMask) + (D & qlowpixelMask)) >> 2) & qlowpixelMask)
96
97
98 static void Super2xSaI_ex(uint8_t *src, uint32_t src_pitch,
99 uint8_t *dst, uint32_t dst_pitch,
100 uint32_t width, uint32_t height, int sbpp)
101 {
102
103 unsigned int x, y;
104 uint32_t color[16];
105 unsigned char *src_line[4];
106
107 /* Point to the first 3 lines. */
108 src_line[0] = src;
109 src_line[1] = src;
110 src_line[2] = src + src_pitch;
111 src_line[3] = src + src_pitch * 2;
112
113 x = 0, y = 0;
114
115 if (PixelsPerMask == 2) {
116 unsigned short *sbp;
117 sbp = (unsigned short*)src_line[0];
118 color[0] = *sbp; color[1] = color[0]; color[2] = color[0]; color[3] = color[0];
119 color[4] = color[0]; color[5] = color[0]; color[6] = *(sbp + 1); color[7] = *(sbp + 2);
120 sbp = (unsigned short*)src_line[2];
121 color[8] = *sbp; color[9] = color[8]; color[10] = *(sbp + 1); color[11] = *(sbp + 2);
122 sbp = (unsigned short*)src_line[3];
123 color[12] = *sbp; color[13] = color[12]; color[14] = *(sbp + 1); color[15] = *(sbp + 2);
124 }
125 else {
126 uint32_t *lbp;
127 lbp = (uint32_t*)src_line[0];
128 color[0] = *lbp; color[1] = color[0]; color[2] = color[0]; color[3] = color[0];
129 color[4] = color[0]; color[5] = color[0]; color[6] = *(lbp + 1); color[7] = *(lbp + 2);
130 lbp = (uint32_t*)src_line[2];
131 color[8] = *lbp; color[9] = color[8]; color[10] = *(lbp + 1); color[11] = *(lbp + 2);
132 lbp = (uint32_t*)src_line[3];
133 color[12] = *lbp; color[13] = color[12]; color[14] = *(lbp + 1); color[15] = *(lbp + 2);
134 }
135
136 for (y = 0; y < height; y++) {
137 unsigned char *dst_line[2];
138
139 dst_line[0] = dst + dst_pitch*2*y;
140 dst_line[1] = dst + dst_pitch*(2*y+1);
141
142 /* Todo: x = width - 2, x = width - 1 */
143
144 for (x = 0; x < width; x++) {
145 uint32_t product1a, product1b, product2a, product2b;
146
147 //--------------------------------------- B0 B1 B2 B3 0 1 2 3
148 // 4 5* 6 S2 -> 4 5* 6 7
149 // 1 2 3 S1 8 9 10 11
150 // A0 A1 A2 A3 12 13 14 15
151 //--------------------------------------
152 if (color[9] == color[6] && color[5] != color[10]) {
153 product2b = color[9];
154 product1b = product2b;
155 }
156 else if (color[5] == color[10] && color[9] != color[6]) {
157 product2b = color[5];
158 product1b = product2b;
159 }
160 else if (color[5] == color[10] && color[9] == color[6]) {
161 int r = 0;
162
163 r += GET_RESULT(color[6], color[5], color[8], color[13]);
164 r += GET_RESULT(color[6], color[5], color[4], color[1]);
165 r += GET_RESULT(color[6], color[5], color[14], color[11]);
166 r += GET_RESULT(color[6], color[5], color[2], color[7]);
167
168 if (r > 0)
169 product1b = color[6];
170 else if (r < 0)
171 product1b = color[5];
172 else
173 product1b = INTERPOLATE(color[5], color[6]);
174
175 product2b = product1b;
176
177 }
178 else {
179 if (color[6] == color[10] && color[10] == color[13] && color[9] != color[14] && color[10] != color[12])
180 product2b = Q_INTERPOLATE(color[10], color[10], color[10], color[9]);
181 else if (color[5] == color[9] && color[9] == color[14] && color[13] != color[10] && color[9] != color[15])
182 product2b = Q_INTERPOLATE(color[9], color[9], color[9], color[10]);
183 else
184 product2b = INTERPOLATE(color[9], color[10]);
185
186 if (color[6] == color[10] && color[6] == color[1] && color[5] != color[2] && color[6] != color[0])
187 product1b = Q_INTERPOLATE(color[6], color[6], color[6], color[5]);
188 else if (color[5] == color[9] && color[5] == color[2] && color[1] != color[6] && color[5] != color[3])
189 product1b = Q_INTERPOLATE(color[6], color[5], color[5], color[5]);
190 else
191 product1b = INTERPOLATE(color[5], color[6]);
192 }
193
194 if (color[5] == color[10] && color[9] != color[6] && color[4] == color[5] && color[5] != color[14])
195 product2a = INTERPOLATE(color[9], color[5]);
196 else if (color[5] == color[8] && color[6] == color[5] && color[4] != color[9] && color[5] != color[12])
197 product2a = INTERPOLATE(color[9], color[5]);
198 else
199 product2a = color[9];
200
201 if (color[9] == color[6] && color[5] != color[10] && color[8] == color[9] && color[9] != color[2])
202 product1a = INTERPOLATE(color[9], color[5]);
203 else if (color[4] == color[9] && color[10] == color[9] && color[8] != color[5] && color[9] != color[0])
204 product1a = INTERPOLATE(color[9], color[5]);
205 else
206 product1a = color[5];
207
208 if (PixelsPerMask == 2) {
209 *((uint32_t *) (&dst_line[0][x * 4])) = product1a | (product1b << 16);
210 *((uint32_t *) (&dst_line[1][x * 4])) = product2a | (product2b << 16);
211 }
212 else {
213 *((uint32_t *) (&dst_line[0][x * 8])) = product1a;
214 *((uint32_t *) (&dst_line[0][x * 8 + 4])) = product1b;
215 *((uint32_t *) (&dst_line[1][x * 8])) = product2a;
216 *((uint32_t *) (&dst_line[1][x * 8 + 4])) = product2b;
217 }
218
219 /* Move color matrix forward */
220 color[0] = color[1]; color[4] = color[5]; color[8] = color[9]; color[12] = color[13];
221 color[1] = color[2]; color[5] = color[6]; color[9] = color[10]; color[13] = color[14];
222 color[2] = color[3]; color[6] = color[7]; color[10] = color[11]; color[14] = color[15];
223
224 if (x < width - 3) {
225 x += 3;
226 if (PixelsPerMask == 2) {
227 color[3] = *(((unsigned short*)src_line[0]) + x);
228 color[7] = *(((unsigned short*)src_line[1]) + x);
229 color[11] = *(((unsigned short*)src_line[2]) + x);
230 color[15] = *(((unsigned short*)src_line[3]) + x);
231 }
232 else {
233 color[3] = *(((uint32_t*)src_line[0]) + x);
234 color[7] = *(((uint32_t*)src_line[1]) + x);
235 color[11] = *(((uint32_t*)src_line[2]) + x);
236 color[15] = *(((uint32_t*)src_line[3]) + x);
237 }
238 x -= 3;
239 }
240 }
241
242 /* We're done with one line, so we shift the source lines up */
243 src_line[0] = src_line[1];
244 src_line[1] = src_line[2];
245 src_line[2] = src_line[3];
246
247 /* Read next line */
248 if (y + 3 >= height)
249 src_line[3] = src_line[2];
250 else
251 src_line[3] = src_line[2] + src_pitch;
252
253 /* Then shift the color matrix up */
254 if (PixelsPerMask == 2) {
255 unsigned short *sbp;
256 sbp = (unsigned short*)src_line[0];
257 color[0] = *sbp; color[1] = color[0]; color[2] = *(sbp + 1); color[3] = *(sbp + 2);
258 sbp = (unsigned short*)src_line[1];
259 color[4] = *sbp; color[5] = color[4]; color[6] = *(sbp + 1); color[7] = *(sbp + 2);
260 sbp = (unsigned short*)src_line[2];
261 color[8] = *sbp; color[9] = color[9]; color[10] = *(sbp + 1); color[11] = *(sbp + 2);
262 sbp = (unsigned short*)src_line[3];
263 color[12] = *sbp; color[13] = color[12]; color[14] = *(sbp + 1); color[15] = *(sbp + 2);
264 }
265 else {
266 uint32_t *lbp;
267 lbp = (uint32_t*)src_line[0];
268 color[0] = *lbp; color[1] = color[0]; color[2] = *(lbp + 1); color[3] = *(lbp + 2);
269 lbp = (uint32_t*)src_line[1];
270 color[4] = *lbp; color[5] = color[4]; color[6] = *(lbp + 1); color[7] = *(lbp + 2);
271 lbp = (uint32_t*)src_line[2];
272 color[8] = *lbp; color[9] = color[9]; color[10] = *(lbp + 1); color[11] = *(lbp + 2);
273 lbp = (uint32_t*)src_line[3];
274 color[12] = *lbp; color[13] = color[12]; color[14] = *(lbp + 1); color[15] = *(lbp + 2);
275 }
276
277 } // y loop
278
279 }
280
281
282 //===========================================================================//
283
284 static int config(struct vf_instance *vf,
285 int width, int height, int d_width, int d_height,
286 unsigned int flags, unsigned int outfmt){
287
288 Init_2xSaI(outfmt&255);
289
290 return vf_next_config(vf,2*width,2*height,2*d_width,2*d_height,flags,outfmt);
291 }
292
293 static int put_image(struct vf_instance *vf, mp_image_t *mpi, double pts){
294 mp_image_t *dmpi;
295
296 // hope we'll get DR buffer:
297 dmpi=vf_get_image(vf->next,mpi->imgfmt,
298 MP_IMGTYPE_TEMP, MP_IMGFLAG_ACCEPT_STRIDE,
299 2*mpi->w, 2*mpi->h);
300
301 Super2xSaI_ex(mpi->planes[0], mpi->stride[0],
302 dmpi->planes[0], dmpi->stride[0],
303 mpi->w, mpi->h, mpi->bpp/8);
304
305 return vf_next_put_image(vf,dmpi, pts);
306 }
307
308 //===========================================================================//
309
310 static int query_format(struct vf_instance *vf, unsigned int fmt){
311 switch(fmt){
312 // case IMGFMT_BGR15:
313 // case IMGFMT_BGR16:
314 case IMGFMT_BGR32:
315 return vf_next_query_format(vf,fmt);
316 }
317 return 0;
318 }
319
320 static int vf_open(vf_instance_t *vf, char *args){
321 vf->config=config;
322 vf->put_image=put_image;
323 vf->query_format=query_format;
324 return 1;
325 }
326
327 const vf_info_t vf_info_2xsai = {
328 "2xSai BGR bitmap 2x scaler",
329 "2xsai",
330 "A'rpi",
331 "http://elektron.its.tudelft.nl/~dalikifa/",
332 vf_open,
333 NULL
334 };
335
336 //===========================================================================//
MPlayer development branch