2 * Copyright (c) 2013 The WebM project authors. All Rights Reserved.
4 * Use of this source code is governed by a BSD-style license
5 * that can be found in the LICENSE file in the root of the source
6 * tree. An additional intellectual property rights grant can be found
7 * in the file PATENTS. All contributing project authors may
8 * be found in the AUTHORS file in the root of the source tree.
10 #ifndef VP9_VP9_IFACE_COMMON_H_
11 #define VP9_VP9_IFACE_COMMON_H_
13 static void yuvconfig2image(vpx_image_t *img, const YV12_BUFFER_CONFIG *yv12,
15 /** vpx_img_wrap() doesn't allow specifying independent strides for
16 * the Y, U, and V planes, nor other alignment adjustments that
17 * might be representable by a YV12_BUFFER_CONFIG, so we just
18 * initialize all the fields.*/
19 const int ss_x = yv12->uv_crop_width < yv12->y_crop_width;
20 const int ss_y = yv12->uv_crop_height < yv12->y_crop_height;
24 img->fmt = VPX_IMG_FMT_I444;
27 img->fmt = VPX_IMG_FMT_I422;
31 img->fmt = VPX_IMG_FMT_I420;
34 img->w = yv12->y_stride;
35 img->h = ALIGN_POWER_OF_TWO(yv12->y_height + 2 * VP9_ENC_BORDER_IN_PIXELS, 3);
36 img->d_w = yv12->y_crop_width;
37 img->d_h = yv12->y_crop_height;
38 img->x_chroma_shift = ss_x;
39 img->y_chroma_shift = ss_y;
40 img->planes[VPX_PLANE_Y] = yv12->y_buffer;
41 img->planes[VPX_PLANE_U] = yv12->u_buffer;
42 img->planes[VPX_PLANE_V] = yv12->v_buffer;
43 img->planes[VPX_PLANE_ALPHA] = yv12->alpha_buffer;
44 img->stride[VPX_PLANE_Y] = yv12->y_stride;
45 img->stride[VPX_PLANE_U] = yv12->uv_stride;
46 img->stride[VPX_PLANE_V] = yv12->uv_stride;
47 img->stride[VPX_PLANE_ALPHA] = yv12->alpha_stride;
49 img->user_priv = user_priv;
50 img->img_data = yv12->buffer_alloc;
51 img->img_data_owner = 0;
55 static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img,
56 YV12_BUFFER_CONFIG *yv12) {
57 yv12->y_buffer = img->planes[VPX_PLANE_Y];
58 yv12->u_buffer = img->planes[VPX_PLANE_U];
59 yv12->v_buffer = img->planes[VPX_PLANE_V];
60 yv12->alpha_buffer = img->planes[VPX_PLANE_ALPHA];
62 yv12->y_crop_width = img->d_w;
63 yv12->y_crop_height = img->d_h;
64 yv12->y_width = img->d_w;
65 yv12->y_height = img->d_h;
67 yv12->uv_width = img->x_chroma_shift == 1 ? (1 + yv12->y_width) / 2
69 yv12->uv_height = img->y_chroma_shift == 1 ? (1 + yv12->y_height) / 2
72 yv12->alpha_width = yv12->alpha_buffer ? img->d_w : 0;
73 yv12->alpha_height = yv12->alpha_buffer ? img->d_h : 0;
75 yv12->y_stride = img->stride[VPX_PLANE_Y];
76 yv12->uv_stride = img->stride[VPX_PLANE_U];
77 yv12->alpha_stride = yv12->alpha_buffer ? img->stride[VPX_PLANE_ALPHA] : 0;
79 yv12->border = (img->stride[VPX_PLANE_Y] - img->w) / 2;
81 // For development purposes, force alpha to hold the same data as Y for now.
82 yv12->alpha_buffer = yv12->y_buffer;
83 yv12->alpha_width = yv12->y_width;
84 yv12->alpha_height = yv12->y_height;
85 yv12->alpha_stride = yv12->y_stride;
90 #endif // VP9_VP9_IFACE_COMMON_H_