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gerrit-public.fairphone.software / platform / external / libmpeg2 / 9cfbe9d47586abe7045cfba128aec00a6bb49f80 / . / common / impeg2_format_conv.c
blob: ec0bcfb61eab14eab84500eedd33c0403feabf9c [file] [log] [blame]
Venkatarama Avadhaniaed24ee2015-03-11 10:08:57 +0530[diff] [blame]1/******************************************************************************
2 *
3 * Copyright (C) 2015 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 *****************************************************************************
18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19*/
20/*****************************************************************************/
21/* */
22/* File Name : impeg2_format_conv .c */
23/* */
24/* Description : Contains functions needed to convert the images in */
25/* different color spaces to yuv 422i color space */
26/* */
27/* List of Functions : YUV420toYUV420() */
28/* YUV420toYUV422I() */
29/* YUV420toYUV420SP_VU() */
30/* YUV420toYUV420SP_UU() */
31/* */
32/* Issues / Problems : None */
33/* */
34/* Revision History : */
35/* */
36/* DD MM YYYY Author(s) Changes (Describe the changes made) */
37/* 28 08 2007 Naveen Kumar T Draft */
38/* */
39/*****************************************************************************/
40/*****************************************************************************/
41/* File Includes */
42/*****************************************************************************/
43
44/* System include files */
45
46/* User include files */
47#include <stdio.h>
48#include <string.h>
49#include "iv_datatypedef.h"
50#include "iv.h"
51#include "ithread.h"
52
53#include "iv_datatypedef.h"
54#include "impeg2_macros.h"
55#include "impeg2_buf_mgr.h"
56#include "impeg2_disp_mgr.h"
57#include "impeg2_defs.h"
58#include "impeg2_platform_macros.h"
59
60#include "impeg2_job_queue.h"
61#include "impeg2_format_conv.h"
62
63
64/*****************************************************************************/
65/* */
66/* Function Name : impeg2_copy_frm_yuv420p() */
67/* */
68/* Description : This function performs conversion from YUV420 to */
69/* YUV422I color space. */
70/* */
71/* Inputs : pu1_src_y, - UWORD8 pointer to source y plane. */
72/* pu1_src_u, - UWORD8 pointer to source u plane. */
73/* pu1_src_v, - UWORD8 pointer to source v plane. */
74/* pu1_dst_y, - UWORD8 pointer to dest y plane. */
75/* pu1_dst_u, - UWORD8 pointer to dest u plane. */
76/* pu1_dst_v, - UWORD8 pointer to dest v plane. */
77/* u4_width, - Width of image. */
78/* u4_height, - Height of image. */
79/* u4_src_stride_y - Stride in pixels of source Y plane. */
80/* u4_src_stride_u - Stride in pixels of source U plane. */
81/* u4_src_stride_v - Stride in pixels of source V plane. */
82/* u4_dst_stride_y - Stride in pixels of dest Y plane. */
83/* u4_dst_stride_u - Stride in pixels of dest U plane. */
84/* u4_dst_stride_v - Stride in pixels of dest V plane. */
85/* */
86/* Globals : None */
87/* */
88/* Processing : One row is processed at a time. The one iteration of the */
89/* code will rearrange pixels into YUV422 interleaved */
90/* format. */
91/* */
92/* Outputs : None */
93/* */
94/* Returns : None */
95/* */
96/* Issues : None */
97/* */
98/* Revision History: */
99/* */
100/* DD MM YYYY Author(s) Changes (Describe the changes made) */
101/* 29 08 2007 Naveen Kumar T Draft */
102/* */
103/*****************************************************************************/
104void impeg2_copy_frm_yuv420p(UWORD8 *pu1_src_y,
105 UWORD8 *pu1_src_u,
106 UWORD8 *pu1_src_v,
107 UWORD8 *pu1_dst_y,
108 UWORD8 *pu1_dst_u,
109 UWORD8 *pu1_dst_v,
110 UWORD32 u4_width,
111 UWORD32 u4_height,
112 UWORD32 u4_src_stride_y,
113 UWORD32 u4_src_stride_u,
114 UWORD32 u4_src_stride_v,
115 UWORD32 u4_dst_stride_y,
116 UWORD32 u4_dst_stride_u,
117 UWORD32 u4_dst_stride_v)
118{
119 WORD32 i4_cnt;
120 WORD32 i4_y_height = (WORD32) u4_height;
121 WORD32 i4_uv_height = u4_height >> 1;
122 WORD32 i4_uv_width = u4_width >> 1;
123
124 for(i4_cnt = 0; i4_cnt < i4_y_height; i4_cnt++)
125 {
126 memcpy(pu1_dst_y, pu1_src_y, u4_width);
127 pu1_dst_y += (u4_dst_stride_y);
128 pu1_src_y += (u4_src_stride_y);
129 }
130
131 for(i4_cnt = 0; i4_cnt < i4_uv_height; i4_cnt++)
132 {
133 memcpy(pu1_dst_u, pu1_src_u, i4_uv_width);
134 pu1_dst_u += (u4_dst_stride_u);
135 pu1_src_u += (u4_src_stride_u);
136
137 }
138
139 for(i4_cnt = 0; i4_cnt < i4_uv_height; i4_cnt++)
140 {
141 memcpy(pu1_dst_v, pu1_src_v, i4_uv_width);
142 pu1_dst_v += (u4_dst_stride_v);
143 pu1_src_v += (u4_src_stride_v);
144
145 }
146
147}
148
149/*****************************************************************************/
150/* */
151/* Function Name : impeg2_fmt_conv_yuv420p_to_yuv422ile() */
152/* */
153/* Description : This function performs conversion from YUV420 to */
154/* YUV422I color space. */
155/* */
156/* Inputs : pu1_y - UWORD8 pointer to y plane. */
157/* pu1_u - UWORD8 pointer to u plane. */
158/* pu1_v - UWORD8 pointer to u plane. */
159/* pu2_yuv422i - UWORD16 pointer to yuv422iimage. */
160/* u4_width - Width of the Y plane. */
161/* u4_height - Height of the Y plane. */
162/* u4_stride_y - Stride in pixels of Y plane. */
163/* u4_stride_u - Stride in pixels of U plane. */
164/* u4_stride_v - Stride in pixels of V plane. */
165/* u4_stride_yuv422i- Stride in pixels of yuv422i image. */
166/* */
167/* Globals : None */
168/* */
169/* Processing : One row is processed at a time. The one iteration of the */
170/* code will rearrange pixels into YUV422 interleaved */
171/* format. */
172/* */
173/* Outputs : None */
174/* */
175/* Returns : None */
176/* */
177/* Issues : None */
178/* */
179/* Revision History: */
180/* */
181/* DD MM YYYY Author(s) Changes (Describe the changes made) */
182/* 29 08 2007 Naveen Kumar T Draft */
183/* */
184/*****************************************************************************/
185
186void impeg2_fmt_conv_yuv420p_to_yuv422ile(register UWORD8 *pu1_y,
187 register UWORD8 *pu1_u,
188 register UWORD8 *pu1_v,
189 void *pv_yuv422i,
190 UWORD32 u4_width,
191 UWORD32 u4_height,
192 UWORD32 u4_stride_y,
193 UWORD32 u4_stride_u,
194 UWORD32 u4_stride_v,
195 UWORD32 u4_stride_yuv422i)
196{
197 /* Declare local variables */
198 register WORD16 i,j;
199 register UWORD16 u2_offset1,u2_offset2,u2_offset3,u2_offset_yuv422i;
200 register UWORD8 u1_y1,u1_uv;
201 register UWORD32 u4_pixel;
202 register UWORD16 u2_width_cnt;
203 register UWORD32 *pu4_yuv422i;
204
205 UWORD8 u1_flag; /* This flag is used to indicate wether the row is even or odd */
206
207 u1_flag=0x0; /* Intialize it with 0 indicating odd row */
208
209 /* Calculate the offsets necessary to make input and output buffers to point next row */
210 u2_offset1 = u4_stride_y - u4_width;
211 u2_offset2 = u4_stride_u - ((u4_width + 1) >> 1);
212 u2_offset3 = u4_stride_v - ((u4_width + 1) >> 1);
213 u2_offset_yuv422i = (u4_stride_yuv422i >> 1) -((u4_width + 1) >> 1);
214
215 /* Type cast the output pointer to UWORD32 */
216 pu4_yuv422i = (UWORD32 *)pv_yuv422i;
217
218 /* Calculate the loop counter for inner loop */
219 u2_width_cnt = u4_width >> 1;
220
221 /* Run the loop for height of input buffer */
222 for(i = u4_height; i > 0; i--)
223 {
224 /* Run the loop for width/2 */
225 for(j = u2_width_cnt; j > 0; j--)
226 {
227 /* Store the value in output buffer in the order U0Y0V0Y1U2Y2V2Y3.... */
228 /* Load Y0 */
229 u1_y1 = *pu1_y++;
230 /* Load Y1 */
231 u4_pixel = *pu1_y++;
232 /* Load V0 */
233 u1_uv = *pu1_v++;
234 u4_pixel = (u4_pixel << 8) + u1_uv;
235 /* Load U0 */
236 u1_uv = *pu1_u++;
237 u4_pixel = (u4_pixel << 8) + u1_y1;
238 u4_pixel = (u4_pixel << 8) + u1_uv;
239 *pu4_yuv422i++ = u4_pixel;
240 }
241 /* Incase of width is odd number take care of last pixel */
242 if(u4_width & 0x1)
243 {
244 /* Store the value in output buffer in the order U0Y0V0Y1U2Y2V2Y3.... */
245 /* Load Y0 */
246 u1_y1 = *pu1_y++;
247 /* Load V0 */
248 u1_uv = *pu1_v++;
249 /* Take Y0 as Y1 */
250 u4_pixel = u1_y1;
251 u4_pixel = (u4_pixel << 8) + u1_uv;
252 /* Load U0 */
253 u1_uv = *pu1_u++;
254 u4_pixel = (u4_pixel << 8) + u1_y1;
255 u4_pixel = (u4_pixel << 8) + u1_uv;
256 *pu4_yuv422i++ = u4_pixel;
257 }
258 /* Make the pointers to buffer to point to next row */
259 pu1_y = pu1_y + u2_offset1;
260 if(!u1_flag)
261 {
262 /* Restore the pointers of u and v buffer back so that the row of pixels are also */
263 /* Processed with same row of u and values again */
264 pu1_u = pu1_u - ((u4_width + 1) >> 1);
265 pu1_v = pu1_v - ((u4_width + 1) >> 1);
266 }
267 else
268 {
269 /* Adjust the u and v buffer pointers so that they will point to next row */
270 pu1_u = pu1_u + u2_offset2;
271 pu1_v = pu1_v + u2_offset3;
272 }
273
274 /* Adjust the output buffer pointer for next row */
275 pu4_yuv422i = pu4_yuv422i + u2_offset_yuv422i;
276 /* Toggle the flag to convert between odd and even row */
277 u1_flag= u1_flag ^ 0x1;
278 }
279}
280
281
282
283
284void impeg2_fmt_conv_yuv420p_to_yuv420sp_vu(UWORD8 *pu1_y, UWORD8 *pu1_u, UWORD8 *pu1_v,
285 UWORD8 *pu1_dest_y, UWORD8 *pu1_dest_uv,
286 UWORD32 u4_height, UWORD32 u4_width,UWORD32 u4_stridey,
287 UWORD32 u4_strideu, UWORD32 u4_stridev,
288 UWORD32 u4_dest_stride_y, UWORD32 u4_dest_stride_uv,
289 UWORD32 u4_convert_uv_only
290 )
291
292{
293
294
295 UWORD8 *pu1_src,*pu1_dst;
296 UWORD8 *pu1_src_u, *pu1_src_v;
297 UWORD16 i;
298 UWORD32 u2_width_uv;
299
300 UWORD32 u4_dest_inc_y=0, u4_dest_inc_uv=0;
301
302
303 /* Copy Y buffer */
304 pu1_dst = (UWORD8 *)pu1_dest_y;
305 pu1_src = (UWORD8 *)pu1_y;
306
307 u4_dest_inc_y = u4_dest_stride_y;
308 u4_dest_inc_uv = u4_dest_stride_uv;
309
310 if(0 == u4_convert_uv_only)
311 {
312 for(i = 0; i < u4_height; i++)
313 {
314 memcpy((void *)pu1_dst,(void *)pu1_src, u4_width);
315 pu1_dst += u4_dest_inc_y;
316 pu1_src += u4_stridey;
317 }
318 }
319
320 /* Interleave Cb and Cr buffers */
321 pu1_src_u = pu1_u;
322 pu1_src_v = pu1_v;
323 pu1_dst = pu1_dest_uv ;
324
325 u4_height = (u4_height + 1) >> 1;
326 u2_width_uv = (u4_width + 1) >> 1;
327 for(i = 0; i < u4_height ; i++)
328 {
329 UWORD32 j;
330 for(j = 0; j < u2_width_uv; j++)
331 {
332 *pu1_dst++ = *pu1_src_v++;
333 *pu1_dst++ = *pu1_src_u++;
334
335 }
336
337 pu1_dst += u4_dest_inc_uv - u4_width;
338 pu1_src_u += u4_strideu - u2_width_uv;
339 pu1_src_v += u4_stridev - u2_width_uv;
340 }
341}
342
343void impeg2_fmt_conv_yuv420p_to_yuv420sp_uv(UWORD8 *pu1_y, UWORD8 *pu1_u, UWORD8 *pu1_v,
344 UWORD8 *pu1_dest_y, UWORD8 *pu1_dest_uv,
345 UWORD32 u4_height, UWORD32 u4_width,UWORD32 u4_stridey,
346 UWORD32 u4_strideu, UWORD32 u4_stridev,
347 UWORD32 u4_dest_stride_y, UWORD32 u4_dest_stride_uv,
348 UWORD32 u4_convert_uv_only)
349
350{
351
352
353 UWORD8 *pu1_src,*pu1_dst;
354 UWORD8 *pu1_src_u, *pu1_src_v;
355 UWORD16 i;
356 UWORD32 u2_width_uv;
357
358 UWORD32 u4_dest_inc_y=0, u4_dest_inc_uv=0;
359
360
361 /* Copy Y buffer */
362 pu1_dst = (UWORD8 *)pu1_dest_y;
363 pu1_src = (UWORD8 *)pu1_y;
364
365 u4_dest_inc_y = u4_dest_stride_y;
366 u4_dest_inc_uv = u4_dest_stride_uv;
367
368 if(0 == u4_convert_uv_only)
369 {
370 for(i = 0; i < u4_height; i++)
371 {
372 memcpy((void *)pu1_dst,(void *)pu1_src, u4_width);
373 pu1_dst += u4_dest_inc_y;
374 pu1_src += u4_stridey;
375 }
376 }
377
378 /* Interleave Cb and Cr buffers */
379 pu1_src_u = pu1_u;
380 pu1_src_v = pu1_v;
381 pu1_dst = pu1_dest_uv ;
382
383 u4_height = (u4_height + 1) >> 1;
384 u2_width_uv = (u4_width + 1) >> 1;
385 for(i = 0; i < u4_height ; i++)
386 {
387 UWORD32 j;
388 for(j = 0; j < u2_width_uv; j++)
389 {
390 *pu1_dst++ = *pu1_src_u++;
391 *pu1_dst++ = *pu1_src_v++;
392 }
393
394 pu1_dst += u4_dest_inc_uv - u4_width;
395 pu1_src_u += u4_strideu - u2_width_uv;
396 pu1_src_v += u4_stridev - u2_width_uv;
397 }
398
399}
400
401