ref: 330dd67b7b0619da57492ca24207425026b387f4
dir: /vpx_scale/blackfin/yv12config.c/
/* * Copyright (c) 2010 The VP8 project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. An additional intellectual property rights grant can be found * in the file PATENTS. All contributing project authors may * be found in the AUTHORS file in the root of the source tree. */ /**************************************************************************** * * Module Title : yv12config.c * * Description : * ***************************************************************************/ /**************************************************************************** * Header Files ****************************************************************************/ #include "vpx_scale/yv12config.h" #include "vpx_mem/vpx_mem.h" #include <cdef_bf533.h> /**************************************************************************** * Imports ****************************************************************************/ void extend_memset(void *dst, unsigned char value, unsigned int size); /**************************************************************************** * ****************************************************************************/ int vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf) { if (ybf) { if (ybf->buffer_alloc) { duck_free(ybf->buffer_alloc); } ybf->buffer_alloc = 0; } else { return -1; } return 0; } /**************************************************************************** * ****************************************************************************/ int vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height, int border) { //NOTE: int yplane_size = (height + 2 * border) * (width + 2 * border); int uvplane_size = (height / 2 + border) * (width / 2 + border); if (ybf) { vp8_yv12_de_alloc_frame_buffer(ybf); ybf->y_width = width; ybf->y_height = height; ybf->y_stride = width + 2 * border; ybf->uv_width = width / 2; ybf->uv_height = height / 2; ybf->uv_stride = ybf->uv_width + border; ybf->border = border; // Added 2 extra lines to framebuffer so that copy12x12 doesn't fail // when we have a large motion vector in V on the last v block. // Note : We never use these pixels anyway so this doesn't hurt. ybf->buffer_alloc = (unsigned char *) duck_memalign(32, (yplane_size * 3 / 2) + ybf->y_stride , 0); if (ybf->buffer_alloc == NULL) return -1; ybf->y_buffer = ybf->buffer_alloc + border * ybf->y_stride + border; ybf->u_buffer = ybf->buffer_alloc + yplane_size + border / 2 * ybf->uv_stride + border / 2; ybf->v_buffer = ybf->buffer_alloc + yplane_size + uvplane_size + border / 2 * ybf->uv_stride + border / 2; } else { return -2; } return 0; } /**************************************************************************** * ****************************************************************************/ int vp8_yv12_black_frame_buffer(YV12_BUFFER_CONFIG *ybf) { if (ybf) { if (ybf->buffer_alloc) { extend_memset(ybf->y_buffer, 0x0, ybf->y_stride *(ybf->y_height + 2 * ybf->border)); extend_memset(ybf->u_buffer, 0x80, ybf->uv_stride *(ybf->uv_height + ybf->border)); extend_memset(ybf->v_buffer, 0x80, ybf->uv_stride *(ybf->uv_height + ybf->border)); } return 0; } return -1; }