1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/media/libvpx/vp9/vp9_iface_common.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,87 @@
1.4 +/*
1.5 + * Copyright (c) 2013 The WebM project authors. All Rights Reserved.
1.6 + *
1.7 + * Use of this source code is governed by a BSD-style license
1.8 + * that can be found in the LICENSE file in the root of the source
1.9 + * tree. An additional intellectual property rights grant can be found
1.10 + * in the file PATENTS. All contributing project authors may
1.11 + * be found in the AUTHORS file in the root of the source tree.
1.12 + */
1.13 +#ifndef VP9_VP9_IFACE_COMMON_H_
1.14 +#define VP9_VP9_IFACE_COMMON_H_
1.15 +
1.16 +static void yuvconfig2image(vpx_image_t *img, const YV12_BUFFER_CONFIG *yv12,
1.17 + void *user_priv) {
1.18 + /** vpx_img_wrap() doesn't allow specifying independent strides for
1.19 + * the Y, U, and V planes, nor other alignment adjustments that
1.20 + * might be representable by a YV12_BUFFER_CONFIG, so we just
1.21 + * initialize all the fields.*/
1.22 + int bps = 12;
1.23 + if (yv12->uv_height == yv12->y_height) {
1.24 + if (yv12->uv_width == yv12->y_width) {
1.25 + img->fmt = VPX_IMG_FMT_I444;
1.26 + bps = 24;
1.27 + } else {
1.28 + img->fmt = VPX_IMG_FMT_I422;
1.29 + bps = 16;
1.30 + }
1.31 + } else {
1.32 + img->fmt = VPX_IMG_FMT_I420;
1.33 + }
1.34 + img->w = yv12->y_stride;
1.35 + img->h = ALIGN_POWER_OF_TWO(yv12->y_height + 2 * VP9BORDERINPIXELS, 3);
1.36 + img->d_w = yv12->y_crop_width;
1.37 + img->d_h = yv12->y_crop_height;
1.38 + img->x_chroma_shift = yv12->uv_width < yv12->y_width;
1.39 + img->y_chroma_shift = yv12->uv_height < yv12->y_height;
1.40 + img->planes[VPX_PLANE_Y] = yv12->y_buffer;
1.41 + img->planes[VPX_PLANE_U] = yv12->u_buffer;
1.42 + img->planes[VPX_PLANE_V] = yv12->v_buffer;
1.43 + img->planes[VPX_PLANE_ALPHA] = yv12->alpha_buffer;
1.44 + img->stride[VPX_PLANE_Y] = yv12->y_stride;
1.45 + img->stride[VPX_PLANE_U] = yv12->uv_stride;
1.46 + img->stride[VPX_PLANE_V] = yv12->uv_stride;
1.47 + img->stride[VPX_PLANE_ALPHA] = yv12->alpha_stride;
1.48 + img->bps = bps;
1.49 + img->user_priv = user_priv;
1.50 + img->img_data = yv12->buffer_alloc;
1.51 + img->img_data_owner = 0;
1.52 + img->self_allocd = 0;
1.53 +}
1.54 +
1.55 +static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img,
1.56 + YV12_BUFFER_CONFIG *yv12) {
1.57 + yv12->y_buffer = img->planes[VPX_PLANE_Y];
1.58 + yv12->u_buffer = img->planes[VPX_PLANE_U];
1.59 + yv12->v_buffer = img->planes[VPX_PLANE_V];
1.60 + yv12->alpha_buffer = img->planes[VPX_PLANE_ALPHA];
1.61 +
1.62 + yv12->y_crop_width = img->d_w;
1.63 + yv12->y_crop_height = img->d_h;
1.64 + yv12->y_width = img->d_w;
1.65 + yv12->y_height = img->d_h;
1.66 +
1.67 + yv12->uv_width = img->x_chroma_shift == 1 ? (1 + yv12->y_width) / 2
1.68 + : yv12->y_width;
1.69 + yv12->uv_height = img->y_chroma_shift == 1 ? (1 + yv12->y_height) / 2
1.70 + : yv12->y_height;
1.71 +
1.72 + yv12->alpha_width = yv12->alpha_buffer ? img->d_w : 0;
1.73 + yv12->alpha_height = yv12->alpha_buffer ? img->d_h : 0;
1.74 +
1.75 + yv12->y_stride = img->stride[VPX_PLANE_Y];
1.76 + yv12->uv_stride = img->stride[VPX_PLANE_U];
1.77 + yv12->alpha_stride = yv12->alpha_buffer ? img->stride[VPX_PLANE_ALPHA] : 0;
1.78 +
1.79 + yv12->border = (img->stride[VPX_PLANE_Y] - img->w) / 2;
1.80 +#if CONFIG_ALPHA
1.81 + // For development purposes, force alpha to hold the same data a Y for now.
1.82 + yv12->alpha_buffer = yv12->y_buffer;
1.83 + yv12->alpha_width = yv12->y_width;
1.84 + yv12->alpha_height = yv12->y_height;
1.85 + yv12->alpha_stride = yv12->y_stride;
1.86 +#endif
1.87 + return VPX_CODEC_OK;
1.88 +}
1.89 +
1.90 +#endif // VP9_VP9_IFACE_COMMON_H_
