90 lines
3.2 KiB
C
90 lines
3.2 KiB
C
/*
|
|
* Copyright (c) 2013 The WebM project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
#ifndef VP9_VP9_IFACE_COMMON_H_
|
|
#define VP9_VP9_IFACE_COMMON_H_
|
|
|
|
static void yuvconfig2image(vpx_image_t *img, const YV12_BUFFER_CONFIG *yv12,
|
|
void *user_priv) {
|
|
/** vpx_img_wrap() doesn't allow specifying independent strides for
|
|
* the Y, U, and V planes, nor other alignment adjustments that
|
|
* might be representable by a YV12_BUFFER_CONFIG, so we just
|
|
* initialize all the fields.*/
|
|
int bps = 12;
|
|
if (yv12->uv_height == yv12->y_height) {
|
|
if (yv12->uv_width == yv12->y_width) {
|
|
img->fmt = VPX_IMG_FMT_I444;
|
|
bps = 24;
|
|
} else {
|
|
img->fmt = VPX_IMG_FMT_I422;
|
|
bps = 16;
|
|
}
|
|
} else {
|
|
img->fmt = VPX_IMG_FMT_I420;
|
|
}
|
|
img->w = yv12->y_stride;
|
|
img->h = multiple8(yv12->y_height + 2 * VP9BORDERINPIXELS);
|
|
img->d_w = yv12->y_crop_width;
|
|
img->d_h = yv12->y_crop_height;
|
|
img->x_chroma_shift = yv12->uv_width < yv12->y_width;
|
|
img->y_chroma_shift = yv12->uv_height < yv12->y_height;
|
|
img->planes[VPX_PLANE_Y] = yv12->y_buffer;
|
|
img->planes[VPX_PLANE_U] = yv12->u_buffer;
|
|
img->planes[VPX_PLANE_V] = yv12->v_buffer;
|
|
img->planes[VPX_PLANE_ALPHA] = yv12->alpha_buffer;
|
|
img->stride[VPX_PLANE_Y] = yv12->y_stride;
|
|
img->stride[VPX_PLANE_U] = yv12->uv_stride;
|
|
img->stride[VPX_PLANE_V] = yv12->uv_stride;
|
|
img->stride[VPX_PLANE_ALPHA] = yv12->alpha_stride;
|
|
img->bps = bps;
|
|
img->user_priv = user_priv;
|
|
img->img_data = yv12->buffer_alloc;
|
|
img->img_data_owner = 0;
|
|
img->self_allocd = 0;
|
|
}
|
|
|
|
static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img,
|
|
YV12_BUFFER_CONFIG *yv12) {
|
|
yv12->y_buffer = img->planes[VPX_PLANE_Y];
|
|
yv12->u_buffer = img->planes[VPX_PLANE_U];
|
|
yv12->v_buffer = img->planes[VPX_PLANE_V];
|
|
yv12->alpha_buffer = img->planes[VPX_PLANE_ALPHA];
|
|
|
|
yv12->y_crop_width = img->d_w;
|
|
yv12->y_crop_height = img->d_h;
|
|
yv12->y_width = img->d_w;
|
|
yv12->y_height = img->d_h;
|
|
|
|
yv12->uv_width = img->x_chroma_shift == 1 ? (1 + yv12->y_width) / 2
|
|
: yv12->y_width;
|
|
yv12->uv_height = img->y_chroma_shift == 1 ? (1 + yv12->y_height) / 2
|
|
: yv12->y_height;
|
|
|
|
yv12->alpha_width = yv12->alpha_buffer ? img->d_w : 0;
|
|
yv12->alpha_height = yv12->alpha_buffer ? img->d_h : 0;
|
|
|
|
yv12->y_stride = img->stride[VPX_PLANE_Y];
|
|
yv12->uv_stride = img->stride[VPX_PLANE_U];
|
|
yv12->alpha_stride = yv12->alpha_buffer ? img->stride[VPX_PLANE_ALPHA] : 0;
|
|
|
|
yv12->border = (img->stride[VPX_PLANE_Y] - img->w) / 2;
|
|
yv12->clrtype = REG_YUV;
|
|
|
|
#if CONFIG_ALPHA
|
|
// For development purposes, force alpha to hold the same data a Y for now.
|
|
yv12->alpha_buffer = yv12->y_buffer;
|
|
yv12->alpha_width = yv12->y_width;
|
|
yv12->alpha_height = yv12->y_height;
|
|
yv12->alpha_stride = yv12->y_stride;
|
|
#endif
|
|
return VPX_CODEC_OK;
|
|
}
|
|
|
|
#endif // VP9_VP9_IFACE_COMMON_H_
|