1 /*
2 * Copyright (c) 2011-2014, The Linux Foundation. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above
10 * copyright notice, this list of conditions and the following
11 * disclaimer in the documentation and/or other materials provided
12 * with the distribution.
13 * * Neither the name of The Linux Foundation nor the names of its
14 * contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <cutils/log.h>
31 #include <string.h>
32 #include <stdlib.h>
33 #include <errno.h>
34 #include "software_converter.h"
35
36 /** Convert YV12 to YCrCb_420_SP */
convertYV12toYCrCb420SP(const copybit_image_t * src,private_handle_t * yv12_handle)37 int convertYV12toYCrCb420SP(const copybit_image_t *src, private_handle_t *yv12_handle)
38 {
39 private_handle_t* hnd = (private_handle_t*)src->handle;
40
41 if(hnd == NULL || yv12_handle == NULL){
42 ALOGE("Invalid handle");
43 return -1;
44 }
45
46 // Please refer to the description of YV12 in hardware.h
47 // for the formulae used to calculate buffer sizes and offsets
48
49 // In a copybit_image_t, w is the stride and
50 // stride - horiz_padding is the actual width
51 // vertical stride is the same as height, so not considered
52 unsigned int stride = src->w;
53 unsigned int width = src->w - src->horiz_padding;
54 unsigned int height = src->h;
55 unsigned int y_size = stride * src->h;
56 unsigned int c_width = ALIGN(stride/2, (unsigned int)16);
57 unsigned int c_size = c_width * src->h/2;
58 unsigned int chromaPadding = c_width - width/2;
59 unsigned int chromaSize = c_size * 2;
60 unsigned char* newChroma = (unsigned char *)(yv12_handle->base + y_size);
61 unsigned char* oldChroma = (unsigned char*)(hnd->base + y_size);
62 memcpy((char *)yv12_handle->base,(char *)hnd->base,y_size);
63
64 #if defined(__ARM_HAVE_NEON) && !defined(__aarch64__)
65 /* interleave */
66 if(!chromaPadding) {
67 unsigned char * t1 = newChroma;
68 unsigned char * t2 = oldChroma;
69 unsigned char * t3 = t2 + chromaSize/2;
70 for(unsigned int i=0; i < (chromaSize/2)>>3; i++) {
71 __asm__ __volatile__ (
72 "vld1.u8 d0, [%0]! \n"
73 "vld1.u8 d1, [%1]! \n"
74 "vst2.u8 {d0, d1}, [%2]! \n"
75 :"+r"(t2), "+r"(t3), "+r"(t1)
76 :
77 :"memory","d0","d1"
78 );
79
80 }
81 }
82 #else //__ARM_HAVE_NEON
83 if(!chromaPadding) {
84 for(unsigned int i = 0; i< chromaSize/2; i++) {
85 newChroma[i*2] = oldChroma[i];
86 newChroma[i*2+1] = oldChroma[i+chromaSize/2];
87 }
88
89 }
90 #endif
91 // If the image is not aligned to 16 pixels,
92 // convert using the C routine below
93 // r1 tracks the row of the source buffer
94 // r2 tracks the row of the destination buffer
95 // The width/2 checks are to avoid copying
96 // from the padding
97
98 if(chromaPadding) {
99 unsigned int r1 = 0, r2 = 0, i = 0, j = 0;
100 while(r1 < height/2) {
101 if(j == width) {
102 j = 0;
103 r2++;
104 continue;
105 }
106 if (j+1 == width) {
107 newChroma[r2*width + j] = oldChroma[r1*c_width+i];
108 r2++;
109 newChroma[r2*width] = oldChroma[r1*c_width+i+c_size];
110 j = 1;
111 } else {
112 newChroma[r2*width + j] = oldChroma[r1*c_width+i];
113 newChroma[r2*width + j + 1] = oldChroma[r1*c_width+i+c_size];
114 j+=2;
115 }
116 i++;
117 if (i == width/2 ) {
118 i = 0;
119 r1++;
120 }
121 }
122 }
123
124 return 0;
125 }
126
127 struct copyInfo{
128 int width;
129 int height;
130 int src_stride;
131 int dst_stride;
132 size_t src_plane1_offset;
133 size_t src_plane2_offset;
134 size_t dst_plane1_offset;
135 size_t dst_plane2_offset;
136 };
137
138 /* Internal function to do the actual copy of source to destination */
copy_source_to_destination(const uintptr_t src_base,const uintptr_t dst_base,copyInfo & info)139 static int copy_source_to_destination(const uintptr_t src_base,
140 const uintptr_t dst_base,
141 copyInfo& info)
142 {
143 if (!src_base || !dst_base) {
144 ALOGE("%s: invalid memory src_base = 0x%p dst_base=0x%p",
145 __FUNCTION__, (void*)src_base, (void*)dst_base);
146 return COPYBIT_FAILURE;
147 }
148
149 int width = info.width;
150 int height = info.height;
151 unsigned char *src = (unsigned char*)src_base;
152 unsigned char *dst = (unsigned char*)dst_base;
153
154 // Copy the luma
155 for (int i = 0; i < height; i++) {
156 memcpy(dst, src, width);
157 src += info.src_stride;
158 dst += info.dst_stride;
159 }
160
161 // Copy plane 1
162 src = (unsigned char*)(src_base + info.src_plane1_offset);
163 dst = (unsigned char*)(dst_base + info.dst_plane1_offset);
164 width = width/2;
165 height = height/2;
166 for (int i = 0; i < height; i++) {
167 memcpy(dst, src, info.src_stride);
168 src += info.src_stride;
169 dst += info.dst_stride;
170 }
171 return 0;
172 }
173
174
175 /*
176 * Function to convert the c2d format into an equivalent Android format
177 *
178 * @param: source buffer handle
179 * @param: destination image
180 *
181 * @return: return status
182 */
convert_yuv_c2d_to_yuv_android(private_handle_t * hnd,struct copybit_image_t const * rhs)183 int convert_yuv_c2d_to_yuv_android(private_handle_t *hnd,
184 struct copybit_image_t const *rhs)
185 {
186 ALOGD("Enter %s", __FUNCTION__);
187 if (!hnd || !rhs) {
188 ALOGE("%s: invalid inputs hnd=%p rhs=%p", __FUNCTION__, hnd, rhs);
189 return COPYBIT_FAILURE;
190 }
191
192 int ret = COPYBIT_SUCCESS;
193 private_handle_t *dst_hnd = (private_handle_t *)rhs->handle;
194
195 copyInfo info;
196 info.width = rhs->w;
197 info.height = rhs->h;
198 info.src_stride = ALIGN(info.width, 32);
199 info.dst_stride = ALIGN(info.width, 16);
200 switch(rhs->format) {
201 case HAL_PIXEL_FORMAT_YCbCr_420_SP:
202 case HAL_PIXEL_FORMAT_YCrCb_420_SP: {
203 info.src_plane1_offset = info.src_stride*info.height;
204 info.dst_plane1_offset = info.dst_stride*info.height;
205 } break;
206 case HAL_PIXEL_FORMAT_NV12_ENCODEABLE: {
207 // Chroma is 2K aligned for the NV12 encodeable format.
208 info.src_plane1_offset = ALIGN(info.src_stride*info.height, 2048);
209 info.dst_plane1_offset = ALIGN(info.dst_stride*info.height, 2048);
210 } break;
211 default:
212 ALOGE("%s: unsupported format (format=0x%x)", __FUNCTION__,
213 rhs->format);
214 return COPYBIT_FAILURE;
215 }
216
217 ret = copy_source_to_destination((uintptr_t) hnd->base, (uintptr_t) dst_hnd->base, info);
218 return ret;
219 }
220
221 /*
222 * Function to convert the Android format into an equivalent C2D format
223 *
224 * @param: source buffer handle
225 * @param: destination image
226 *
227 * @return: return status
228 */
convert_yuv_android_to_yuv_c2d(private_handle_t * hnd,struct copybit_image_t const * rhs)229 int convert_yuv_android_to_yuv_c2d(private_handle_t *hnd,
230 struct copybit_image_t const *rhs)
231 {
232 if (!hnd || !rhs) {
233 ALOGE("%s: invalid inputs hnd=%p rhs=%p", __FUNCTION__, hnd, rhs);
234 return COPYBIT_FAILURE;
235 }
236
237 int ret = COPYBIT_SUCCESS;
238 private_handle_t *dst_hnd = (private_handle_t *)rhs->handle;
239
240 copyInfo info;
241 info.width = rhs->w;
242 info.height = rhs->h;
243 info.src_stride = ALIGN(hnd->width, 16);
244 info.dst_stride = ALIGN(info.width, 32);
245 switch(rhs->format) {
246 case HAL_PIXEL_FORMAT_YCbCr_420_SP:
247 case HAL_PIXEL_FORMAT_YCrCb_420_SP: {
248 info.src_plane1_offset = info.src_stride*info.height;
249 info.dst_plane1_offset = info.dst_stride*info.height;
250 } break;
251 case HAL_PIXEL_FORMAT_NV12_ENCODEABLE: {
252 // Chroma is 2K aligned for the NV12 encodeable format.
253 info.src_plane1_offset = ALIGN(info.src_stride*info.height, 2048);
254 info.dst_plane1_offset = ALIGN(info.dst_stride*info.height, 2048);
255 } break;
256 default:
257 ALOGE("%s: unsupported format (format=0x%x)", __FUNCTION__,
258 rhs->format);
259 return -1;
260 }
261
262 ret = copy_source_to_destination((uintptr_t) hnd->base, (uintptr_t) dst_hnd->base, info);
263 return ret;
264 }
265