1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
|
/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
******************************************************************************
* @file M4VIFI_ResizeYUV420toBGR565.c
* @brief Contain video library function
* @note This file has a Combo filter function
* -# Resizes YUV420 and converts to RGR565 with rotation
******************************************************************************
*/
/* Prototypes of functions, and type definitions */
#include "M4VIFI_FiltersAPI.h"
/* Macro definitions */
#include "M4VIFI_Defines.h"
/* Clip table declaration */
#include "M4VIFI_Clip.h"
/**
*********************************************************************************************
* M4VIFI_UInt8 M4VIFI_ResizeBilinearYUV420toBGR565(void *pContext, M4VIFI_ImagePlane *pPlaneIn,
* M4VIFI_ImagePlane *pPlaneOut)
* @brief Resize YUV420 plane and converts to BGR565 with +90 rotation.
* @note Basic sturture of the function
* Loop on each row (step 2)
* Loop on each column (step 2)
* Get four Y samples and 1 u & V sample
* Resize the Y with corresponing U and V samples
* Compute the four corresponding R G B values
* Place the R G B in the ouput plane in rotated fashion
* end loop column
* end loop row
* For resizing bilinear interpolation linearly interpolates along
* each row, and then uses that result in a linear interpolation down each column.
* Each estimated pixel in the output image is a weighted
* combination of its four neighbours. The ratio of compression
* or dilatation is estimated using input and output sizes.
* @param pPlaneIn: (IN) Pointer to YUV plane buffer
* @param pContext: (IN) Context Pointer
* @param pPlaneOut: (OUT) Pointer to BGR565 Plane
* @return M4VIFI_OK: there is no error
* @return M4VIFI_ILLEGAL_FRAME_HEIGHT: YUV Plane height is ODD
* @return M4VIFI_ILLEGAL_FRAME_WIDTH: YUV Plane width is ODD
*********************************************************************************************
*/
M4VIFI_UInt8 M4VIFI_ResizeBilinearYUV420toBGR565(void* pContext,
M4VIFI_ImagePlane *pPlaneIn,
M4VIFI_ImagePlane *pPlaneOut)
{
M4VIFI_UInt8 *pu8_data_in[PLANES], *pu8_data_in1[PLANES],*pu8_data_out;
M4VIFI_UInt32 *pu32_rgb_data_current, *pu32_rgb_data_next, *pu32_rgb_data_start;
M4VIFI_UInt32 u32_width_in[PLANES], u32_width_out, u32_height_in[PLANES], u32_height_out;
M4VIFI_UInt32 u32_stride_in[PLANES];
M4VIFI_UInt32 u32_stride_out, u32_stride2_out, u32_width2_RGB, u32_height2_RGB;
M4VIFI_UInt32 u32_x_inc[PLANES], u32_y_inc[PLANES];
M4VIFI_UInt32 u32_x_accum_Y, u32_x_accum_U, u32_x_accum_start;
M4VIFI_UInt32 u32_y_accum_Y, u32_y_accum_U;
M4VIFI_UInt32 u32_x_frac_Y, u32_x_frac_U, u32_y_frac_Y,u32_y_frac_U;
M4VIFI_Int32 U_32, V_32, Y_32, Yval_32;
M4VIFI_UInt8 u8_Red, u8_Green, u8_Blue;
M4VIFI_UInt32 u32_row, u32_col;
M4VIFI_UInt32 u32_plane;
M4VIFI_UInt32 u32_rgb_temp1, u32_rgb_temp2;
M4VIFI_UInt32 u32_rgb_temp3,u32_rgb_temp4;
M4VIFI_UInt32 u32_check_size;
M4VIFI_UInt8 *pu8_src_top_Y,*pu8_src_top_U,*pu8_src_top_V ;
M4VIFI_UInt8 *pu8_src_bottom_Y, *pu8_src_bottom_U, *pu8_src_bottom_V;
/* Check for the YUV width and height are even */
u32_check_size = IS_EVEN(pPlaneIn[0].u_height);
if( u32_check_size == FALSE )
{
return M4VIFI_ILLEGAL_FRAME_HEIGHT;
}
u32_check_size = IS_EVEN(pPlaneIn[0].u_width);
if (u32_check_size == FALSE )
{
return M4VIFI_ILLEGAL_FRAME_WIDTH;
}
/* Make the ouput width and height as even */
pPlaneOut->u_height = pPlaneOut->u_height & 0xFFFFFFFE;
pPlaneOut->u_width = pPlaneOut->u_width & 0xFFFFFFFE;
pPlaneOut->u_stride = pPlaneOut->u_stride & 0xFFFFFFFC;
/* Assignment of output pointer */
pu8_data_out = pPlaneOut->pac_data + pPlaneOut->u_topleft;
/* Assignment of output width(rotated) */
u32_width_out = pPlaneOut->u_width;
/* Assignment of output height(rotated) */
u32_height_out = pPlaneOut->u_height;
u32_width2_RGB = pPlaneOut->u_width >> 1;
u32_height2_RGB = pPlaneOut->u_height >> 1;
u32_stride_out = pPlaneOut->u_stride >> 1;
u32_stride2_out = pPlaneOut->u_stride >> 2;
for(u32_plane = 0; u32_plane < PLANES; u32_plane++)
{
/* Set the working pointers at the beginning of the input/output data field */
pu8_data_in[u32_plane] = pPlaneIn[u32_plane].pac_data + pPlaneIn[u32_plane].u_topleft;
/* Get the memory jump corresponding to a row jump */
u32_stride_in[u32_plane] = pPlaneIn[u32_plane].u_stride;
/* Set the bounds of the active image */
u32_width_in[u32_plane] = pPlaneIn[u32_plane].u_width;
u32_height_in[u32_plane] = pPlaneIn[u32_plane].u_height;
}
/* Compute horizontal ratio between src and destination width for Y Plane. */
if (u32_width_out >= u32_width_in[YPlane])
{
u32_x_inc[YPlane] = ((u32_width_in[YPlane]-1) * MAX_SHORT) / (u32_width_out-1);
}
else
{
u32_x_inc[YPlane] = (u32_width_in[YPlane] * MAX_SHORT) / (u32_width_out);
}
/* Compute vertical ratio between src and destination height for Y Plane.*/
if (u32_height_out >= u32_height_in[YPlane])
{
u32_y_inc[YPlane] = ((u32_height_in[YPlane]-1) * MAX_SHORT) / (u32_height_out-1);
}
else
{
u32_y_inc[YPlane] = (u32_height_in[YPlane] * MAX_SHORT) / (u32_height_out);
}
/* Compute horizontal ratio between src and destination width for U and V Planes. */
if (u32_width2_RGB >= u32_width_in[UPlane])
{
u32_x_inc[UPlane] = ((u32_width_in[UPlane]-1) * MAX_SHORT) / (u32_width2_RGB-1);
}
else
{
u32_x_inc[UPlane] = (u32_width_in[UPlane] * MAX_SHORT) / (u32_width2_RGB);
}
/* Compute vertical ratio between src and destination height for U and V Planes. */
if (u32_height2_RGB >= u32_height_in[UPlane])
{
u32_y_inc[UPlane] = ((u32_height_in[UPlane]-1) * MAX_SHORT) / (u32_height2_RGB-1);
}
else
{
u32_y_inc[UPlane] = (u32_height_in[UPlane] * MAX_SHORT) / (u32_height2_RGB);
}
u32_y_inc[VPlane] = u32_y_inc[UPlane];
u32_x_inc[VPlane] = u32_x_inc[UPlane];
/*
Calculate initial accumulator value : u32_y_accum_start.
u32_y_accum_start is coded on 15 bits,and represents a value between 0 and 0.5
*/
if (u32_y_inc[YPlane] > MAX_SHORT)
{
/*
Keep the fractionnal part, assimung that integer part is coded on the 16 high bits,
and the fractionnal on the 15 low bits
*/
u32_y_accum_Y = u32_y_inc[YPlane] & 0xffff;
u32_y_accum_U = u32_y_inc[UPlane] & 0xffff;
if (!u32_y_accum_Y)
{
u32_y_accum_Y = MAX_SHORT;
u32_y_accum_U = MAX_SHORT;
}
u32_y_accum_Y >>= 1;
u32_y_accum_U >>= 1;
}
else
{
u32_y_accum_Y = 0;
u32_y_accum_U = 0;
}
/*
Calculate initial accumulator value : u32_x_accum_start.
u32_x_accum_start is coded on 15 bits, and represents a value between 0 and 0.5
*/
if (u32_x_inc[YPlane] > MAX_SHORT)
{
u32_x_accum_start = u32_x_inc[YPlane] & 0xffff;
if (!u32_x_accum_start)
{
u32_x_accum_start = MAX_SHORT;
}
u32_x_accum_start >>= 1;
}
else
{
u32_x_accum_start = 0;
}
pu32_rgb_data_start = (M4VIFI_UInt32*)pu8_data_out;
/*
Bilinear interpolation linearly interpolates along each row, and then uses that
result in a linear interpolation donw each column. Each estimated pixel in the
output image is a weighted combination of its four neighbours according to the formula :
F(p',q')=f(p,q)R(-a)R(b)+f(p,q-1)R(-a)R(b-1)+f(p+1,q)R(1-a)R(b)+f(p+&,q+1)R(1-a)R(b-1)
with R(x) = / x+1 -1 =< x =< 0 \ 1-x 0 =< x =< 1 and a (resp. b) weighting coefficient
is the distance from the nearest neighbor in the p (resp. q) direction
*/
for (u32_row = u32_height_out; u32_row != 0; u32_row -= 2)
{
u32_x_accum_Y = u32_x_accum_start;
u32_x_accum_U = u32_x_accum_start;
/* Vertical weight factor */
u32_y_frac_Y = (u32_y_accum_Y >> 12) & 15;
u32_y_frac_U = (u32_y_accum_U >> 12) & 15;
/* RGB current line position pointer */
pu32_rgb_data_current = pu32_rgb_data_start ;
/* RGB next line position pointer */
pu32_rgb_data_next = pu32_rgb_data_current + (u32_stride2_out);
/* Y Plane next row pointer */
pu8_data_in1[YPlane] = pu8_data_in[YPlane];
u32_rgb_temp3 = u32_y_accum_Y + (u32_y_inc[YPlane]);
if (u32_rgb_temp3 >> 16)
{
pu8_data_in1[YPlane] = pu8_data_in[YPlane] +
(u32_rgb_temp3 >> 16) * (u32_stride_in[YPlane]);
u32_rgb_temp3 &= 0xffff;
}
u32_rgb_temp4 = (u32_rgb_temp3 >> 12) & 15;
for (u32_col = u32_width_out; u32_col != 0; u32_col -= 2)
{
/* Input Y plane elements */
pu8_src_top_Y = pu8_data_in[YPlane] + (u32_x_accum_Y >> 16);
pu8_src_bottom_Y = pu8_src_top_Y + u32_stride_in[YPlane];
/* Input U Plane elements */
pu8_src_top_U = pu8_data_in[UPlane] + (u32_x_accum_U >> 16);
pu8_src_bottom_U = pu8_src_top_U + u32_stride_in[UPlane];
pu8_src_top_V = pu8_data_in[VPlane] + (u32_x_accum_U >> 16);
pu8_src_bottom_V = pu8_src_top_V + u32_stride_in[VPlane];
/* Horizontal weight factor for Y plane */
u32_x_frac_Y = (u32_x_accum_Y >> 12)&15;
/* Horizontal weight factor for U and V planes */
u32_x_frac_U = (u32_x_accum_U >> 12)&15;
/* Weighted combination */
U_32 = (((pu8_src_top_U[0]*(16-u32_x_frac_U) + pu8_src_top_U[1]*u32_x_frac_U)
*(16-u32_y_frac_U) + (pu8_src_bottom_U[0]*(16-u32_x_frac_U)
+ pu8_src_bottom_U[1]*u32_x_frac_U)*u32_y_frac_U ) >> 8);
V_32 = (((pu8_src_top_V[0]*(16-u32_x_frac_U) + pu8_src_top_V[1]*u32_x_frac_U)
*(16-u32_y_frac_U)+ (pu8_src_bottom_V[0]*(16-u32_x_frac_U)
+ pu8_src_bottom_V[1]*u32_x_frac_U)*u32_y_frac_U ) >> 8);
Y_32 = (((pu8_src_top_Y[0]*(16-u32_x_frac_Y) + pu8_src_top_Y[1]*u32_x_frac_Y)
*(16-u32_y_frac_Y) + (pu8_src_bottom_Y[0]*(16-u32_x_frac_Y)
+ pu8_src_bottom_Y[1]*u32_x_frac_Y)*u32_y_frac_Y ) >> 8);
u32_x_accum_U += (u32_x_inc[UPlane]);
/* YUV to RGB */
#ifdef __RGB_V1__
Yval_32 = Y_32*37;
#else /* __RGB_V1__v */
Yval_32 = Y_32*0x2568;
#endif /* __RGB_V1__v */
DEMATRIX(u8_Red,u8_Green,u8_Blue,Yval_32,U_32,V_32);
/* Pack 8 bit R,G,B to RGB565 */
#ifdef LITTLE_ENDIAN
u32_rgb_temp1 = PACK_BGR565(0,u8_Red,u8_Green,u8_Blue);
#else /* LITTLE_ENDIAN */
u32_rgb_temp1 = PACK_BGR565(16,u8_Red,u8_Green,u8_Blue);
#endif /* LITTLE_ENDIAN */
pu8_src_top_Y = pu8_data_in1[YPlane]+(u32_x_accum_Y >> 16);
pu8_src_bottom_Y = pu8_src_top_Y + u32_stride_in[YPlane];
/* Weighted combination */
Y_32 = (((pu8_src_top_Y[0]*(16-u32_x_frac_Y) + pu8_src_top_Y[1]*u32_x_frac_Y)
*(16-u32_rgb_temp4) + (pu8_src_bottom_Y[0]*(16-u32_x_frac_Y)
+ pu8_src_bottom_Y[1]*u32_x_frac_Y)*u32_rgb_temp4 ) >> 8);
u32_x_accum_Y += u32_x_inc[YPlane];
/* Horizontal weight factor */
u32_x_frac_Y = (u32_x_accum_Y >> 12)&15;
/* YUV to RGB */
#ifdef __RGB_V1__
Yval_32 = Y_32*37;
#else /* __RGB_V1__v */
Yval_32 = Y_32*0x2568;
#endif /* __RGB_V1__v */
DEMATRIX(u8_Red,u8_Green,u8_Blue,Yval_32,U_32,V_32);
/* Pack 8 bit R,G,B to RGB565 */
#ifdef LITTLE_ENDIAN
u32_rgb_temp2 = PACK_BGR565(0,u8_Red,u8_Green,u8_Blue);
#else /* LITTLE_ENDIAN */
u32_rgb_temp2 = PACK_BGR565(16,u8_Red,u8_Green,u8_Blue);
#endif /* LITTLE_ENDIAN */
pu8_src_top_Y = pu8_data_in[YPlane] + (u32_x_accum_Y >> 16) ;
pu8_src_bottom_Y = pu8_src_top_Y + u32_stride_in[YPlane];
/* Weighted combination */
Y_32 = (((pu8_src_top_Y[0]*(16-u32_x_frac_Y) + pu8_src_top_Y[1]*u32_x_frac_Y)
*(16-u32_y_frac_Y) + (pu8_src_bottom_Y[0]*(16-u32_x_frac_Y)
+ pu8_src_bottom_Y[1]*u32_x_frac_Y)*u32_y_frac_Y ) >> 8);
/* YUV to RGB */
#ifdef __RGB_V1__
Yval_32 = Y_32*37;
#else /* __RGB_V1__v */
Yval_32 = Y_32*0x2568;
#endif /* __RGB_V1__v */
DEMATRIX(u8_Red,u8_Green,u8_Blue,Yval_32,U_32,V_32);
/* Pack 8 bit R,G,B to RGB565 */
#ifdef LITTLE_ENDIAN
*(pu32_rgb_data_current)++ = u32_rgb_temp1 |
PACK_BGR565(16,u8_Red,u8_Green,u8_Blue);
#else /* LITTLE_ENDIAN */
*(pu32_rgb_data_current)++ = u32_rgb_temp1 |
PACK_BGR565(0,u8_Red,u8_Green,u8_Blue);
#endif /* LITTLE_ENDIAN */
pu8_src_top_Y = pu8_data_in1[YPlane]+ (u32_x_accum_Y >> 16);
pu8_src_bottom_Y = pu8_src_top_Y + u32_stride_in[YPlane];
/* Weighted combination */
Y_32 = (((pu8_src_top_Y[0]*(16-u32_x_frac_Y) + pu8_src_top_Y[1]*u32_x_frac_Y)
*(16-u32_rgb_temp4) + (pu8_src_bottom_Y[0]*(16-u32_x_frac_Y)
+ pu8_src_bottom_Y[1]*u32_x_frac_Y)*u32_rgb_temp4 )>>8);
u32_x_accum_Y += u32_x_inc[YPlane];
/* YUV to RGB */
#ifdef __RGB_V1__
Yval_32=Y_32*37;
#else /* __RGB_V1__v */
Yval_32=Y_32*0x2568;
#endif /* __RGB_V1__v */
DEMATRIX(u8_Red,u8_Green,u8_Blue,Yval_32,U_32,V_32);
/* Pack 8 bit R,G,B to RGB565 */
#ifdef LITTLE_ENDIAN
*(pu32_rgb_data_next)++ = u32_rgb_temp2 |
PACK_BGR565(16,u8_Red,u8_Green,u8_Blue);
#else /* LITTLE_ENDIAN */
*(pu32_rgb_data_next)++ = u32_rgb_temp2 |
PACK_BGR565(0,u8_Red,u8_Green,u8_Blue);
#endif /* LITTLE_ENDIAN */
} /* End of horizontal scanning */
u32_y_accum_Y = u32_rgb_temp3 + (u32_y_inc[YPlane]);
u32_y_accum_U += (u32_y_inc[UPlane]);
/* Y plane row update */
if (u32_y_accum_Y >> 16)
{
pu8_data_in[YPlane] = pu8_data_in1[YPlane] +
((u32_y_accum_Y >> 16) * (u32_stride_in[YPlane]));
u32_y_accum_Y &= 0xffff;
}
else
{
pu8_data_in[YPlane] = pu8_data_in1[YPlane];
}
/* U and V planes row update */
if (u32_y_accum_U >> 16)
{
pu8_data_in[UPlane] = pu8_data_in[UPlane] +
(u32_y_accum_U >> 16) * (u32_stride_in[UPlane]);
pu8_data_in[VPlane] = pu8_data_in[VPlane] +
(u32_y_accum_U >> 16) * (u32_stride_in[VPlane]);
u32_y_accum_U &= 0xffff;
}
/* BGR pointer Update */
pu32_rgb_data_start += u32_stride_out;
} /* End of vertical scanning */
return M4VIFI_OK;
}
|
