83 lines
3.0 KiB
C
83 lines
3.0 KiB
C
/*
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* Copyright (c) 2013 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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#ifndef VP9_VP9_IFACE_COMMON_H_
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#define VP9_VP9_IFACE_COMMON_H_
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static void yuvconfig2image(vpx_image_t *img, const YV12_BUFFER_CONFIG *yv12,
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void *user_priv) {
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/** vpx_img_wrap() doesn't allow specifying independent strides for
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* the Y, U, and V planes, nor other alignment adjustments that
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* might be representable by a YV12_BUFFER_CONFIG, so we just
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* initialize all the fields.*/
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int bps = 12;
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if (yv12->uv_height == yv12->y_height) {
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if (yv12->uv_width == yv12->y_width) {
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img->fmt = VPX_IMG_FMT_I444;
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bps = 24;
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} else {
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img->fmt = VPX_IMG_FMT_I422;
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bps = 16;
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}
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} else {
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img->fmt = VPX_IMG_FMT_I420;
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}
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img->w = yv12->y_stride;
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img->h = multiple16(yv12->y_height + 2 * VP9BORDERINPIXELS);
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img->d_w = yv12->y_crop_width;
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img->d_h = yv12->y_crop_height;
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img->x_chroma_shift = yv12->uv_width < yv12->y_width;
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img->y_chroma_shift = yv12->uv_height < yv12->y_height;
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img->planes[VPX_PLANE_Y] = yv12->y_buffer;
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img->planes[VPX_PLANE_U] = yv12->u_buffer;
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img->planes[VPX_PLANE_V] = yv12->v_buffer;
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img->planes[VPX_PLANE_ALPHA] = yv12->alpha_buffer;
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img->stride[VPX_PLANE_Y] = yv12->y_stride;
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img->stride[VPX_PLANE_U] = yv12->uv_stride;
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img->stride[VPX_PLANE_V] = yv12->uv_stride;
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img->stride[VPX_PLANE_ALPHA] = yv12->alpha_stride;
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img->bps = bps;
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img->user_priv = user_priv;
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img->img_data = yv12->buffer_alloc;
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img->img_data_owner = 0;
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img->self_allocd = 0;
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}
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static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img,
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YV12_BUFFER_CONFIG *yv12) {
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yv12->y_buffer = img->planes[VPX_PLANE_Y];
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yv12->u_buffer = img->planes[VPX_PLANE_U];
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yv12->v_buffer = img->planes[VPX_PLANE_V];
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yv12->alpha_buffer = img->planes[VPX_PLANE_ALPHA];
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yv12->y_crop_width = img->d_w;
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yv12->y_crop_height = img->d_h;
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yv12->y_width = img->d_w;
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yv12->y_height = img->d_h;
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yv12->uv_width = img->x_chroma_shift == 1 ? (1 + yv12->y_width) / 2
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: yv12->y_width;
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yv12->uv_height = img->y_chroma_shift == 1 ? (1 + yv12->y_height) / 2
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: yv12->y_height;
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yv12->alpha_width = yv12->alpha_buffer ? img->d_w : 0;
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yv12->alpha_height = yv12->alpha_buffer ? img->d_h : 0;
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yv12->y_stride = img->stride[VPX_PLANE_Y];
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yv12->uv_stride = img->stride[VPX_PLANE_U];
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yv12->alpha_stride = yv12->alpha_buffer ? img->stride[VPX_PLANE_ALPHA] : 0;
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yv12->border = (img->stride[VPX_PLANE_Y] - img->w) / 2;
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yv12->clrtype = REG_YUV;
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return VPX_CODEC_OK;
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}
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#endif // VP9_VP9_IFACE_COMMON_H_
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