ref: ce13498b2acccadbd1961e9c52ef2a9b778ca8c2
dir: /vp9/vp9_iface_common.h/
/* * 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 VPX_VP9_VP9_IFACE_COMMON_H_ #define VPX_VP9_VP9_IFACE_COMMON_H_ #include "vpx_ports/mem.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; if (!yv12->subsampling_y) { if (!yv12->subsampling_x) { img->fmt = VPX_IMG_FMT_I444; bps = 24; } else { img->fmt = VPX_IMG_FMT_I422; bps = 16; } } else { if (!yv12->subsampling_x) { img->fmt = VPX_IMG_FMT_I440; bps = 16; } else { img->fmt = VPX_IMG_FMT_I420; bps = 12; } } img->cs = yv12->color_space; img->range = yv12->color_range; img->bit_depth = 8; img->w = yv12->y_stride; img->h = ALIGN_POWER_OF_TWO(yv12->y_height + 2 * VP9_ENC_BORDER_IN_PIXELS, 3); 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[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] = NULL; 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->y_stride; #if CONFIG_VP9_HIGHBITDEPTH if (yv12->flags & YV12_FLAG_HIGHBITDEPTH) { // vpx_image_t uses byte strides and a pointer to the first byte // of the image. img->fmt = (vpx_img_fmt_t)(img->fmt | VPX_IMG_FMT_HIGHBITDEPTH); img->bit_depth = yv12->bit_depth; img->planes[VPX_PLANE_Y] = (uint8_t *)CONVERT_TO_SHORTPTR(yv12->y_buffer); img->planes[VPX_PLANE_U] = (uint8_t *)CONVERT_TO_SHORTPTR(yv12->u_buffer); img->planes[VPX_PLANE_V] = (uint8_t *)CONVERT_TO_SHORTPTR(yv12->v_buffer); img->planes[VPX_PLANE_ALPHA] = NULL; img->stride[VPX_PLANE_Y] = 2 * yv12->y_stride; img->stride[VPX_PLANE_U] = 2 * yv12->uv_stride; img->stride[VPX_PLANE_V] = 2 * yv12->uv_stride; img->stride[VPX_PLANE_ALPHA] = 2 * yv12->y_stride; } #endif // CONFIG_VP9_HIGHBITDEPTH 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->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->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->uv_crop_width = yv12->uv_width; yv12->uv_crop_height = yv12->uv_height; yv12->y_stride = img->stride[VPX_PLANE_Y]; yv12->uv_stride = img->stride[VPX_PLANE_U]; yv12->color_space = img->cs; yv12->color_range = img->range; #if CONFIG_VP9_HIGHBITDEPTH if (img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) { // In vpx_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; #else yv12->border = (img->stride[VPX_PLANE_Y] - img->w) / 2; #endif // CONFIG_VP9_HIGHBITDEPTH yv12->subsampling_x = img->x_chroma_shift; yv12->subsampling_y = img->y_chroma_shift; return VPX_CODEC_OK; } static VP9_REFFRAME ref_frame_to_vp9_reframe(vpx_ref_frame_type_t frame) { switch (frame) { case VP8_LAST_FRAME: return VP9_LAST_FLAG; case VP8_GOLD_FRAME: return VP9_GOLD_FLAG; case VP8_ALTR_FRAME: return VP9_ALT_FLAG; } assert(0 && "Invalid Reference Frame"); return VP9_LAST_FLAG; } #endif // VPX_VP9_VP9_IFACE_COMMON_H_