michael@0: /*
michael@0:  *  Copyright (c) 2013 The WebM project authors. All Rights Reserved.
michael@0:  *
michael@0:  *  Use of this source code is governed by a BSD-style license
michael@0:  *  that can be found in the LICENSE file in the root of the source
michael@0:  *  tree. An additional intellectual property rights grant can be found
michael@0:  *  in the file PATENTS.  All contributing project authors may
michael@0:  *  be found in the AUTHORS file in the root of the source tree.
michael@0:  */
michael@0: #ifndef VP9_VP9_IFACE_COMMON_H_
michael@0: #define VP9_VP9_IFACE_COMMON_H_
michael@0: 
michael@0: static void yuvconfig2image(vpx_image_t *img, const YV12_BUFFER_CONFIG  *yv12,
michael@0:                             void *user_priv) {
michael@0:   /** vpx_img_wrap() doesn't allow specifying independent strides for
michael@0:     * the Y, U, and V planes, nor other alignment adjustments that
michael@0:     * might be representable by a YV12_BUFFER_CONFIG, so we just
michael@0:     * initialize all the fields.*/
michael@0:   int bps = 12;
michael@0:   if (yv12->uv_height == yv12->y_height) {
michael@0:     if (yv12->uv_width == yv12->y_width) {
michael@0:       img->fmt = VPX_IMG_FMT_I444;
michael@0:       bps = 24;
michael@0:     } else {
michael@0:       img->fmt = VPX_IMG_FMT_I422;
michael@0:       bps = 16;
michael@0:     }
michael@0:   } else {
michael@0:     img->fmt = VPX_IMG_FMT_I420;
michael@0:   }
michael@0:   img->w = yv12->y_stride;
michael@0:   img->h = ALIGN_POWER_OF_TWO(yv12->y_height + 2 * VP9BORDERINPIXELS, 3);
michael@0:   img->d_w = yv12->y_crop_width;
michael@0:   img->d_h = yv12->y_crop_height;
michael@0:   img->x_chroma_shift = yv12->uv_width < yv12->y_width;
michael@0:   img->y_chroma_shift = yv12->uv_height < yv12->y_height;
michael@0:   img->planes[VPX_PLANE_Y] = yv12->y_buffer;
michael@0:   img->planes[VPX_PLANE_U] = yv12->u_buffer;
michael@0:   img->planes[VPX_PLANE_V] = yv12->v_buffer;
michael@0:   img->planes[VPX_PLANE_ALPHA] = yv12->alpha_buffer;
michael@0:   img->stride[VPX_PLANE_Y] = yv12->y_stride;
michael@0:   img->stride[VPX_PLANE_U] = yv12->uv_stride;
michael@0:   img->stride[VPX_PLANE_V] = yv12->uv_stride;
michael@0:   img->stride[VPX_PLANE_ALPHA] = yv12->alpha_stride;
michael@0:   img->bps = bps;
michael@0:   img->user_priv = user_priv;
michael@0:   img->img_data = yv12->buffer_alloc;
michael@0:   img->img_data_owner = 0;
michael@0:   img->self_allocd = 0;
michael@0: }
michael@0: 
michael@0: static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img,
michael@0:                                        YV12_BUFFER_CONFIG *yv12) {
michael@0:   yv12->y_buffer = img->planes[VPX_PLANE_Y];
michael@0:   yv12->u_buffer = img->planes[VPX_PLANE_U];
michael@0:   yv12->v_buffer = img->planes[VPX_PLANE_V];
michael@0:   yv12->alpha_buffer = img->planes[VPX_PLANE_ALPHA];
michael@0: 
michael@0:   yv12->y_crop_width  = img->d_w;
michael@0:   yv12->y_crop_height = img->d_h;
michael@0:   yv12->y_width  = img->d_w;
michael@0:   yv12->y_height = img->d_h;
michael@0: 
michael@0:   yv12->uv_width = img->x_chroma_shift == 1 ? (1 + yv12->y_width) / 2
michael@0:                                             : yv12->y_width;
michael@0:   yv12->uv_height = img->y_chroma_shift == 1 ? (1 + yv12->y_height) / 2
michael@0:                                              : yv12->y_height;
michael@0: 
michael@0:   yv12->alpha_width = yv12->alpha_buffer ? img->d_w : 0;
michael@0:   yv12->alpha_height = yv12->alpha_buffer ? img->d_h : 0;
michael@0: 
michael@0:   yv12->y_stride = img->stride[VPX_PLANE_Y];
michael@0:   yv12->uv_stride = img->stride[VPX_PLANE_U];
michael@0:   yv12->alpha_stride = yv12->alpha_buffer ? img->stride[VPX_PLANE_ALPHA] : 0;
michael@0: 
michael@0:   yv12->border  = (img->stride[VPX_PLANE_Y] - img->w) / 2;
michael@0: #if CONFIG_ALPHA
michael@0:   // For development purposes, force alpha to hold the same data a Y for now.
michael@0:   yv12->alpha_buffer = yv12->y_buffer;
michael@0:   yv12->alpha_width = yv12->y_width;
michael@0:   yv12->alpha_height = yv12->y_height;
michael@0:   yv12->alpha_stride = yv12->y_stride;
michael@0: #endif
michael@0:   return VPX_CODEC_OK;
michael@0: }
michael@0: 
michael@0: #endif  // VP9_VP9_IFACE_COMMON_H_