ref: 00cec8f9e9a921ad69f20e84f79235a23515b4dd
dir: /vpx_scale/arm/nds/yv12extend.c/
/* * Copyright (c) 2010 The VP8 project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license and patent * grant that can be found in the LICENSE file in the root of the source * tree. All contributing project authors may be found in the AUTHORS * file in the root of the source tree. */ /**************************************************************************** * * Module Title : yv12extend.c * * Description : * ***************************************************************************/ /**************************************************************************** * Header Files ****************************************************************************/ #include "vpx_scale/yv12config.h" #include "vpx_mem/vpx_mem.h" #include <nitro.h> #include <nitro/mi.h> #include <nitro/itcm_begin.h> //---- DMA Number #define DMA_NO 3 /**************************************************************************** * Exports ****************************************************************************/ /**************************************************************************** * ****************************************************************************/ void vp8_yv12_extend_frame_borders(YV12_BUFFER_CONFIG *ybf) { int i; unsigned char *src_ptr1, *src_ptr2; unsigned char *dest_ptr1, *dest_ptr2; unsigned int Border; int plane_stride; int plane_height; int plane_width; /***********/ /* Y Plane */ /***********/ Border = ybf->border; plane_stride = ybf->y_stride; plane_height = ybf->y_height; plane_width = ybf->y_width; // copy the left and right most columns out src_ptr1 = ybf->y_buffer; src_ptr2 = src_ptr1 + plane_width - 1; dest_ptr1 = src_ptr1 - Border; dest_ptr2 = src_ptr2 + 1; for (i = 0; i < plane_height; i++) { mi_cpu_fill8(dest_ptr1, src_ptr1[0], Border); mi_cpu_fill8(dest_ptr2, src_ptr2[0], Border); src_ptr1 += plane_stride; src_ptr2 += plane_stride; dest_ptr1 += plane_stride; dest_ptr2 += plane_stride; } // Now copy the top and bottom source lines into each line of the respective borders src_ptr1 = ybf->y_buffer - Border; src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride; dest_ptr1 = src_ptr1 - (Border * plane_stride); dest_ptr2 = src_ptr2 + plane_stride; for (i = 0; i < (int)Border; i++) { mi_cpu_copy_fast(src_ptr1, dest_ptr1, plane_stride); mi_cpu_copy_fast(src_ptr2, dest_ptr2, plane_stride); dest_ptr1 += plane_stride; dest_ptr2 += plane_stride; } plane_stride /= 2; plane_height /= 2; plane_width /= 2; Border /= 2; /***********/ /* U Plane */ /***********/ // copy the left and right most columns out src_ptr1 = ybf->u_buffer; src_ptr2 = src_ptr1 + plane_width - 1; dest_ptr1 = src_ptr1 - Border; dest_ptr2 = src_ptr2 + 1; for (i = 0; i < plane_height; i++) { mi_cpu_fill8(dest_ptr1, src_ptr1[0], Border); mi_cpu_fill8(dest_ptr2, src_ptr2[0], Border); src_ptr1 += plane_stride; src_ptr2 += plane_stride; dest_ptr1 += plane_stride; dest_ptr2 += plane_stride; } // Now copy the top and bottom source lines into each line of the respective borders src_ptr1 = ybf->u_buffer - Border; src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride; dest_ptr1 = src_ptr1 - (Border * plane_stride); dest_ptr2 = src_ptr2 + plane_stride; for (i = 0; i < (int)(Border); i++) { mi_cpu_copy_fast(src_ptr1, dest_ptr1, plane_stride); mi_cpu_copy_fast(src_ptr2, dest_ptr2, plane_stride); dest_ptr1 += plane_stride; dest_ptr2 += plane_stride; } /***********/ /* V Plane */ /***********/ // copy the left and right most columns out src_ptr1 = ybf->v_buffer; src_ptr2 = src_ptr1 + plane_width - 1; dest_ptr1 = src_ptr1 - Border; dest_ptr2 = src_ptr2 + 1; for (i = 0; i < plane_height; i++) { mi_cpu_fill8(dest_ptr1, src_ptr1[0], Border); mi_cpu_fill8(dest_ptr2, src_ptr2[0], Border); src_ptr1 += plane_stride; src_ptr2 += plane_stride; dest_ptr1 += plane_stride; dest_ptr2 += plane_stride; } // Now copy the top and bottom source lines into each line of the respective borders src_ptr1 = ybf->v_buffer - Border; src_ptr2 = src_ptr1 + (plane_height * plane_stride) - plane_stride; dest_ptr1 = src_ptr1 - (Border * plane_stride); dest_ptr2 = src_ptr2 + plane_stride; for (i = 0; i < (int)(Border); i++) { mi_cpu_copy_fast(src_ptr1, dest_ptr1, plane_stride); mi_cpu_copy_fast(src_ptr2, dest_ptr2, plane_stride); dest_ptr1 += plane_stride; dest_ptr2 += plane_stride; } } /**************************************************************************** * * ROUTINE : vp8_yv12_copy_frame * * INPUTS : * * OUTPUTS : None. * * RETURNS : void * * FUNCTION : Copies the source image into the destination image and * updates the destination's UMV borders. * * SPECIAL NOTES : The frames are assumed to be identical in size. * ****************************************************************************/ void vp8_yv12_copy_frame(YV12_BUFFER_CONFIG *src_ybc, YV12_BUFFER_CONFIG *dst_ybc) { int yplane_size = (src_ybc->y_height + 2 * src_ybc->border) * (src_ybc->y_stride); int mem_size = (yplane_size * 3 / 2) + (src_ybc->y_stride * 2); mi_cpu_copy_fast(src_ybc->buffer_alloc, dst_ybc->buffer_alloc, mem_size); /* unsigned char *src_y, *dst_y; unsigned char *src_u, *dst_u; unsigned char *src_v, *dst_v; int yheight, uv_height; int ystride, uv_stride; int border; int yoffset, uvoffset; border = src_ybc->border; yheight = src_ybc->y_height; uv_height = src_ybc->uv_height; ystride = src_ybc->y_stride; uv_stride = src_ybc->uv_stride; yoffset = border * (ystride + 1); uvoffset = border/2 * (uv_stride + 1); src_y = src_ybc->y_buffer - yoffset; dst_y = dst_ybc->y_buffer - yoffset; src_u = src_ybc->u_buffer - uvoffset; dst_u = dst_ybc->u_buffer - uvoffset; src_v = src_ybc->v_buffer - uvoffset; dst_v = dst_ybc->v_buffer - uvoffset; mi_cpu_copy_fast (src_y, dst_y, ystride * (yheight + 2 * border)); mi_cpu_copy_fast (src_u, dst_u, uv_stride * (uv_height + border)); mi_cpu_copy_fast (src_v, dst_v, uv_stride * (uv_height + border)); */ } #include <nitro/itcm_end.h>