c2140b8af1
Changes 'The VP8 project' to 'The WebM project', for consistency with other webmproject.org repositories. Fixes issue #97. Change-Id: I37c13ed5fbdb9d334ceef71c6350e9febed9bbba
121 lines
3.6 KiB
C
121 lines
3.6 KiB
C
/*
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* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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/****************************************************************************
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*
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* Module Title : yv12config.c
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*
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* Description :
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*
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***************************************************************************/
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/****************************************************************************
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* Header Files
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****************************************************************************/
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#include "vpx_scale/yv12config.h"
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#include "vpx_mem/vpx_mem.h"
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#include <cdef_bf533.h>
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/****************************************************************************
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* Imports
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****************************************************************************/
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void
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extend_memset(void *dst, unsigned char value, unsigned int size);
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/****************************************************************************
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*
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****************************************************************************/
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int
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vp8_yv12_de_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf)
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{
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if (ybf)
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{
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if (ybf->buffer_alloc)
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{
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duck_free(ybf->buffer_alloc);
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}
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ybf->buffer_alloc = 0;
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}
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else
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{
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return -1;
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}
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return 0;
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}
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/****************************************************************************
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*
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****************************************************************************/
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int
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vp8_yv12_alloc_frame_buffer(YV12_BUFFER_CONFIG *ybf, int width, int height, int border)
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{
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//NOTE:
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int yplane_size = (height + 2 * border) * (width + 2 * border);
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int uvplane_size = (height / 2 + border) * (width / 2 + border);
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if (ybf)
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{
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vp8_yv12_de_alloc_frame_buffer(ybf);
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ybf->y_width = width;
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ybf->y_height = height;
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ybf->y_stride = width + 2 * border;
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ybf->uv_width = width / 2;
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ybf->uv_height = height / 2;
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ybf->uv_stride = ybf->uv_width + border;
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ybf->border = border;
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// Added 2 extra lines to framebuffer so that copy12x12 doesn't fail
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// when we have a large motion vector in V on the last v block.
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// Note : We never use these pixels anyway so this doesn't hurt.
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ybf->buffer_alloc = (unsigned char *) duck_memalign(32, (yplane_size * 3 / 2) + ybf->y_stride , 0);
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if (ybf->buffer_alloc == NULL)
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return -1;
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ybf->y_buffer = ybf->buffer_alloc + border * ybf->y_stride + border;
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ybf->u_buffer = ybf->buffer_alloc + yplane_size + border / 2 * ybf->uv_stride + border / 2;
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ybf->v_buffer = ybf->buffer_alloc + yplane_size + uvplane_size + border / 2 * ybf->uv_stride + border / 2;
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}
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else
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{
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return -2;
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}
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return 0;
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}
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/****************************************************************************
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*
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****************************************************************************/
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int
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vp8_yv12_black_frame_buffer(YV12_BUFFER_CONFIG *ybf)
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{
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if (ybf)
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{
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if (ybf->buffer_alloc)
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{
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extend_memset(ybf->y_buffer, 0x0, ybf->y_stride *(ybf->y_height + 2 * ybf->border));
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extend_memset(ybf->u_buffer, 0x80, ybf->uv_stride *(ybf->uv_height + ybf->border));
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extend_memset(ybf->v_buffer, 0x80, ybf->uv_stride *(ybf->uv_height + ybf->border));
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}
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return 0;
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}
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return -1;
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}
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