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/*
* 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 : 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;
}
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