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