mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
112 lines
3.2 KiB
C
112 lines
3.2 KiB
C
/*
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* Copyright (c) 2010 The VP8 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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#include "vpx_scale/yv12config.h"
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#include "vpx_mem/vpx_mem.h"
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/****************************************************************************
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* Exports
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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_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 = ((1 + height) / 2 + border) * ((1 + 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 = (1 + width) / 2;
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ybf->uv_height = (1 + height) / 2;
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ybf->uv_stride = ybf->uv_width + border;
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ybf->border = border;
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ybf->frame_size = yplane_size + 2 * uvplane_size;
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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, ybf->frame_size + (ybf->y_stride * 2) + 32, 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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if (yplane_size & 0xf)
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yplane_size += 16 - (yplane_size & 0xf);
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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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duck_memset(ybf->y_buffer, 0x0, ybf->y_stride * ybf->y_height);
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duck_memset(ybf->u_buffer, 0x80, ybf->uv_stride * ybf->uv_height);
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duck_memset(ybf->v_buffer, 0x80, ybf->uv_stride * ybf->uv_height);
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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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