/* * Copyright (c) 2011, Code Aurora Forum. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials provided * with the distribution. * * Neither the name of Code Aurora Forum, Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #define LOG_TAG "copybit" #include #include #include #include "software_converter.h" /** Convert YV12 to YCrCb_420_SP */ int convertYV12toYCrCb420SP(const copybit_image_t *src, private_handle_t *yv12_handle) { private_handle_t* hnd = (private_handle_t*)src->handle; if(hnd == NULL || yv12_handle == NULL){ ALOGE("Invalid handle"); return -1; } // Please refer to the description of YV12 in hardware.h // for the formulae used to calculate buffer sizes and offsets // In a copybit_image_t, w is the stride and // stride - horiz_padding is the actual width // vertical stride is the same as height, so not considered unsigned int stride = src->w; unsigned int width = src->w - src->horiz_padding; unsigned int height = src->h; unsigned int y_size = stride * src->h; unsigned int c_width = ALIGN(stride/2, 16); unsigned int c_size = c_width * src->h/2; unsigned int chromaPadding = c_width - width/2; unsigned int chromaSize = c_size * 2; unsigned char* newChroma = (unsigned char *)(yv12_handle->base + y_size); unsigned char* oldChroma = (unsigned char*)(hnd->base + y_size); memcpy((char *)yv12_handle->base,(char *)hnd->base,y_size); #ifdef __ARM_HAVE_NEON /* interleave */ if(!chromaPadding) { unsigned char * t1 = newChroma; unsigned char * t2 = oldChroma; unsigned char * t3 = t2 + chromaSize/2; for(unsigned int i=0; i < (chromaSize/2)>>3; i++) { __asm__ __volatile__ ( "vld1.u8 d0, [%0]! \n" "vld1.u8 d1, [%1]! \n" "vst2.u8 {d0, d1}, [%2]! \n" :"+r"(t2), "+r"(t3), "+r"(t1) : :"memory","d0","d1" ); } } #else //__ARM_HAVE_NEON if(!chromaPadding) { for(unsigned int i = 0; i< chromaSize/2; i++) { newChroma[i*2] = oldChroma[i]; newChroma[i*2+1] = oldChroma[i+chromaSize/2]; } } #endif // If the image is not aligned to 16 pixels, // convert using the C routine below // r1 tracks the row of the source buffer // r2 tracks the row of the destination buffer // The width/2 checks are to avoid copying // from the padding if(chromaPadding) { unsigned int r1 = 0, r2 = 0, i = 0, j = 0; while(r1 < height/2) { if(j == width) { j = 0; r2++; continue; } if (j+1 == width) { newChroma[r2*width + j] = oldChroma[r1*c_width+i]; r2++; newChroma[r2*width] = oldChroma[r1*c_width+i+c_size]; j = 1; } else { newChroma[r2*width + j] = oldChroma[r1*c_width+i]; newChroma[r2*width + j + 1] = oldChroma[r1*c_width+i+c_size]; j+=2; } i++; if (i == width/2 ) { i = 0; r1++; } } } return 0; } struct copyInfo{ int width; int height; int src_stride; int dst_stride; int src_plane1_offset; int src_plane2_offset; int dst_plane1_offset; int dst_plane2_offset; }; /* Internal function to do the actual copy of source to destination */ static int copy_source_to_destination(const int src_base, const int dst_base, copyInfo& info) { if (!src_base || !dst_base) { ALOGE("%s: invalid memory src_base = 0x%x dst_base=0x%x", __FUNCTION__, src_base, dst_base); return COPYBIT_FAILURE; } int width = info.width; int height = info.height; unsigned char *src = (unsigned char*)src_base; unsigned char *dst = (unsigned char*)dst_base; // Copy the luma for (int i = 0; i < height; i++) { memcpy(dst, src, width); src += info.src_stride; dst += info.dst_stride; } // Copy plane 1 src = (unsigned char*)(src_base + info.src_plane1_offset); dst = (unsigned char*)(dst_base + info.dst_plane1_offset); width = width/2; height = height/2; for (int i = 0; i < height; i++) { memcpy(dst, src, info.src_stride); src += info.src_stride; dst += info.dst_stride; } return 0; } /* * Function to convert the c2d format into an equivalent Android format * * @param: source buffer handle * @param: destination image * * @return: return status */ int convert_yuv_c2d_to_yuv_android(private_handle_t *hnd, struct copybit_image_t const *rhs) { ALOGD("Enter %s", __FUNCTION__); if (!hnd || !rhs) { ALOGE("%s: invalid inputs hnd=%p rhs=%p", __FUNCTION__, hnd, rhs); return COPYBIT_FAILURE; } int ret = COPYBIT_SUCCESS; private_handle_t *dst_hnd = (private_handle_t *)rhs->handle; copyInfo info; info.width = rhs->w; info.height = rhs->h; info.src_stride = ALIGN(info.width, 32); info.dst_stride = ALIGN(info.width, 16); switch(rhs->format) { case HAL_PIXEL_FORMAT_YCbCr_420_SP: case HAL_PIXEL_FORMAT_YCrCb_420_SP: { info.src_plane1_offset = info.src_stride*info.height; info.dst_plane1_offset = info.dst_stride*info.height; } break; case HAL_PIXEL_FORMAT_NV12_ENCODEABLE: { // Chroma is 2K aligned for the NV12 encodeable format. info.src_plane1_offset = ALIGN(info.src_stride*info.height, 2048); info.dst_plane1_offset = ALIGN(info.dst_stride*info.height, 2048); } break; default: ALOGE("%s: unsupported format (format=0x%x)", __FUNCTION__, rhs->format); return COPYBIT_FAILURE; } ret = copy_source_to_destination(hnd->base, dst_hnd->base, info); return ret; } /* * Function to convert the Android format into an equivalent C2D format * * @param: source buffer handle * @param: destination image * * @return: return status */ int convert_yuv_android_to_yuv_c2d(private_handle_t *hnd, struct copybit_image_t const *rhs) { if (!hnd || !rhs) { ALOGE("%s: invalid inputs hnd=%p rhs=%p", __FUNCTION__, hnd, rhs); return COPYBIT_FAILURE; } int ret = COPYBIT_SUCCESS; private_handle_t *dst_hnd = (private_handle_t *)rhs->handle; copyInfo info; info.width = rhs->w; info.height = rhs->h; info.src_stride = ALIGN(hnd->width, 16); info.dst_stride = ALIGN(info.width, 32); switch(rhs->format) { case HAL_PIXEL_FORMAT_YCbCr_420_SP: case HAL_PIXEL_FORMAT_YCrCb_420_SP: { info.src_plane1_offset = info.src_stride*info.height; info.dst_plane1_offset = info.dst_stride*info.height; } break; case HAL_PIXEL_FORMAT_NV12_ENCODEABLE: { // Chroma is 2K aligned for the NV12 encodeable format. info.src_plane1_offset = ALIGN(info.src_stride*info.height, 2048); info.dst_plane1_offset = ALIGN(info.dst_stride*info.height, 2048); } break; default: ALOGE("%s: unsupported format (format=0x%x)", __FUNCTION__, rhs->format); return -1; } ret = copy_source_to_destination(hnd->base, dst_hnd->base, info); return ret; }