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Diffstat (limited to 'media/libaom/src/av1/av1_iface_common.h')
| -rw-r--r-- | media/libaom/src/av1/av1_iface_common.h | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/media/libaom/src/av1/av1_iface_common.h b/media/libaom/src/av1/av1_iface_common.h new file mode 100644 index 000000000..4a7af580b --- /dev/null +++ b/media/libaom/src/av1/av1_iface_common.h @@ -0,0 +1,136 @@ +/* + * Copyright (c) 2016, Alliance for Open Media. All rights reserved + * + * This source code is subject to the terms of the BSD 2 Clause License and + * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License + * was not distributed with this source code in the LICENSE file, you can + * obtain it at www.aomedia.org/license/software. If the Alliance for Open + * Media Patent License 1.0 was not distributed with this source code in the + * PATENTS file, you can obtain it at www.aomedia.org/license/patent. + */ +#ifndef AOM_AV1_AV1_IFACE_COMMON_H_ +#define AOM_AV1_AV1_IFACE_COMMON_H_ + +#include "aom_ports/mem.h" +#include "aom_scale/yv12config.h" + +static void yuvconfig2image(aom_image_t *img, const YV12_BUFFER_CONFIG *yv12, + void *user_priv) { + /* aom_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; + if (!yv12->subsampling_y) { + if (!yv12->subsampling_x) { + img->fmt = AOM_IMG_FMT_I444; + bps = 24; + } else { + img->fmt = AOM_IMG_FMT_I422; + bps = 16; + } + } else { + img->fmt = AOM_IMG_FMT_I420; + bps = 12; + } + img->cp = yv12->color_primaries; + img->tc = yv12->transfer_characteristics; + img->mc = yv12->matrix_coefficients; + img->monochrome = yv12->monochrome; + img->csp = yv12->chroma_sample_position; + img->range = yv12->color_range; + img->bit_depth = 8; + img->w = yv12->y_width; + img->h = yv12->y_height; + img->d_w = yv12->y_crop_width; + img->d_h = yv12->y_crop_height; + img->r_w = yv12->render_width; + img->r_h = yv12->render_height; + img->x_chroma_shift = yv12->subsampling_x; + img->y_chroma_shift = yv12->subsampling_y; + img->planes[AOM_PLANE_Y] = yv12->y_buffer; + img->planes[AOM_PLANE_U] = yv12->u_buffer; + img->planes[AOM_PLANE_V] = yv12->v_buffer; + img->planes[AOM_PLANE_ALPHA] = NULL; + img->stride[AOM_PLANE_Y] = yv12->y_stride; + img->stride[AOM_PLANE_U] = yv12->uv_stride; + img->stride[AOM_PLANE_V] = yv12->uv_stride; + img->stride[AOM_PLANE_ALPHA] = yv12->y_stride; + if (yv12->flags & YV12_FLAG_HIGHBITDEPTH) { + // aom_image_t uses byte strides and a pointer to the first byte + // of the image. + img->fmt = (aom_img_fmt_t)(img->fmt | AOM_IMG_FMT_HIGHBITDEPTH); + img->bit_depth = yv12->bit_depth; + img->planes[AOM_PLANE_Y] = (uint8_t *)CONVERT_TO_SHORTPTR(yv12->y_buffer); + img->planes[AOM_PLANE_U] = (uint8_t *)CONVERT_TO_SHORTPTR(yv12->u_buffer); + img->planes[AOM_PLANE_V] = (uint8_t *)CONVERT_TO_SHORTPTR(yv12->v_buffer); + img->planes[AOM_PLANE_ALPHA] = NULL; + img->stride[AOM_PLANE_Y] = 2 * yv12->y_stride; + img->stride[AOM_PLANE_U] = 2 * yv12->uv_stride; + img->stride[AOM_PLANE_V] = 2 * yv12->uv_stride; + img->stride[AOM_PLANE_ALPHA] = 2 * yv12->y_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 aom_codec_err_t image2yuvconfig(const aom_image_t *img, + YV12_BUFFER_CONFIG *yv12) { + yv12->y_buffer = img->planes[AOM_PLANE_Y]; + yv12->u_buffer = img->planes[AOM_PLANE_U]; + yv12->v_buffer = img->planes[AOM_PLANE_V]; + + yv12->y_crop_width = img->d_w; + yv12->y_crop_height = img->d_h; + yv12->render_width = img->r_w; + yv12->render_height = img->r_h; + yv12->y_width = img->w; + yv12->y_height = img->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->uv_crop_width = yv12->uv_width; + yv12->uv_crop_height = yv12->uv_height; + + yv12->y_stride = img->stride[AOM_PLANE_Y]; + yv12->uv_stride = img->stride[AOM_PLANE_U]; + yv12->color_primaries = img->cp; + yv12->transfer_characteristics = img->tc; + yv12->matrix_coefficients = img->mc; + yv12->monochrome = img->monochrome; + yv12->chroma_sample_position = img->csp; + yv12->color_range = img->range; + + if (img->fmt & AOM_IMG_FMT_HIGHBITDEPTH) { + // In aom_image_t + // planes point to uint8 address of start of data + // stride counts uint8s to reach next row + // In YV12_BUFFER_CONFIG + // y_buffer, u_buffer, v_buffer point to uint16 address of data + // stride and border counts in uint16s + // This means that all the address calculations in the main body of code + // should work correctly. + // However, before we do any pixel operations we need to cast the address + // to a uint16 ponter and double its value. + yv12->y_buffer = CONVERT_TO_BYTEPTR(yv12->y_buffer); + yv12->u_buffer = CONVERT_TO_BYTEPTR(yv12->u_buffer); + yv12->v_buffer = CONVERT_TO_BYTEPTR(yv12->v_buffer); + yv12->y_stride >>= 1; + yv12->uv_stride >>= 1; + yv12->flags = YV12_FLAG_HIGHBITDEPTH; + } else { + yv12->flags = 0; + } + yv12->border = (yv12->y_stride - img->w) / 2; + yv12->subsampling_x = img->x_chroma_shift; + yv12->subsampling_y = img->y_chroma_shift; + return AOM_CODEC_OK; +} + +#endif // AOM_AV1_AV1_IFACE_COMMON_H_ |