1/* 2 * Copyright (c) 2013 The WebM project authors. All Rights Reserved. 3 * 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. 9 */ 10#ifndef VP9_VP9_IFACE_COMMON_H_ 11#define VP9_VP9_IFACE_COMMON_H_ 12 13static void yuvconfig2image(vpx_image_t *img, const YV12_BUFFER_CONFIG *yv12, 14 void *user_priv) { 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; 21 int bps; 22 if (!ss_y) { 23 if (!ss_x) { 24 img->fmt = VPX_IMG_FMT_I444; 25 bps = 24; 26 } else { 27 img->fmt = VPX_IMG_FMT_I422; 28 bps = 16; 29 } 30 } else { 31 img->fmt = VPX_IMG_FMT_I420; 32 bps = 12; 33 } 34 img->bit_depth = 8; 35 img->w = yv12->y_stride; 36 img->h = ALIGN_POWER_OF_TWO(yv12->y_height + 2 * VP9_ENC_BORDER_IN_PIXELS, 3); 37 img->d_w = yv12->y_crop_width; 38 img->d_h = yv12->y_crop_height; 39 img->x_chroma_shift = ss_x; 40 img->y_chroma_shift = ss_y; 41 img->planes[VPX_PLANE_Y] = yv12->y_buffer; 42 img->planes[VPX_PLANE_U] = yv12->u_buffer; 43 img->planes[VPX_PLANE_V] = yv12->v_buffer; 44 img->planes[VPX_PLANE_ALPHA] = NULL; 45 img->stride[VPX_PLANE_Y] = yv12->y_stride; 46 img->stride[VPX_PLANE_U] = yv12->uv_stride; 47 img->stride[VPX_PLANE_V] = yv12->uv_stride; 48 img->stride[VPX_PLANE_ALPHA] = yv12->y_stride; 49 img->bps = bps; 50 img->user_priv = user_priv; 51 img->img_data = yv12->buffer_alloc; 52 img->img_data_owner = 0; 53 img->self_allocd = 0; 54} 55 56static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img, 57 YV12_BUFFER_CONFIG *yv12) { 58 yv12->y_buffer = img->planes[VPX_PLANE_Y]; 59 yv12->u_buffer = img->planes[VPX_PLANE_U]; 60 yv12->v_buffer = img->planes[VPX_PLANE_V]; 61 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; 66 67 yv12->uv_width = img->x_chroma_shift == 1 ? (1 + yv12->y_width) / 2 68 : yv12->y_width; 69 yv12->uv_height = img->y_chroma_shift == 1 ? (1 + yv12->y_height) / 2 70 : yv12->y_height; 71 72 yv12->y_stride = img->stride[VPX_PLANE_Y]; 73 yv12->uv_stride = img->stride[VPX_PLANE_U]; 74 75 yv12->border = (img->stride[VPX_PLANE_Y] - img->w) / 2; 76 return VPX_CODEC_OK; 77} 78 79#endif // VP9_VP9_IFACE_COMMON_H_ 80