Line data Source code
1 : /*
2 : * Copyright (c) 2013 The WebM project authors. All Rights Reserved.
3 : *
4 : * Use of this source code is governed by a BSD-style license
5 : * that can be found in the LICENSE file in the root of the source
6 : * tree. An additional intellectual property rights grant can be found
7 : * in the file PATENTS. All contributing project authors may
8 : * be found in the AUTHORS file in the root of the source tree.
9 : */
10 : #ifndef VP9_VP9_IFACE_COMMON_H_
11 : #define VP9_VP9_IFACE_COMMON_H_
12 :
13 : #include "vpx_ports/mem.h"
14 :
15 0 : static void yuvconfig2image(vpx_image_t *img, const YV12_BUFFER_CONFIG *yv12,
16 : void *user_priv) {
17 : /** vpx_img_wrap() doesn't allow specifying independent strides for
18 : * the Y, U, and V planes, nor other alignment adjustments that
19 : * might be representable by a YV12_BUFFER_CONFIG, so we just
20 : * initialize all the fields.*/
21 : int bps;
22 0 : if (!yv12->subsampling_y) {
23 0 : if (!yv12->subsampling_x) {
24 0 : img->fmt = VPX_IMG_FMT_I444;
25 0 : bps = 24;
26 : } else {
27 0 : img->fmt = VPX_IMG_FMT_I422;
28 0 : bps = 16;
29 : }
30 : } else {
31 0 : if (!yv12->subsampling_x) {
32 0 : img->fmt = VPX_IMG_FMT_I440;
33 0 : bps = 16;
34 : } else {
35 0 : img->fmt = VPX_IMG_FMT_I420;
36 0 : bps = 12;
37 : }
38 : }
39 0 : img->cs = yv12->color_space;
40 0 : img->range = yv12->color_range;
41 0 : img->bit_depth = 8;
42 0 : img->w = yv12->y_stride;
43 0 : img->h = ALIGN_POWER_OF_TWO(yv12->y_height + 2 * VP9_ENC_BORDER_IN_PIXELS, 3);
44 0 : img->d_w = yv12->y_crop_width;
45 0 : img->d_h = yv12->y_crop_height;
46 0 : img->r_w = yv12->render_width;
47 0 : img->r_h = yv12->render_height;
48 0 : img->x_chroma_shift = yv12->subsampling_x;
49 0 : img->y_chroma_shift = yv12->subsampling_y;
50 0 : img->planes[VPX_PLANE_Y] = yv12->y_buffer;
51 0 : img->planes[VPX_PLANE_U] = yv12->u_buffer;
52 0 : img->planes[VPX_PLANE_V] = yv12->v_buffer;
53 0 : img->planes[VPX_PLANE_ALPHA] = NULL;
54 0 : img->stride[VPX_PLANE_Y] = yv12->y_stride;
55 0 : img->stride[VPX_PLANE_U] = yv12->uv_stride;
56 0 : img->stride[VPX_PLANE_V] = yv12->uv_stride;
57 0 : img->stride[VPX_PLANE_ALPHA] = yv12->y_stride;
58 : #if CONFIG_VP9_HIGHBITDEPTH
59 : if (yv12->flags & YV12_FLAG_HIGHBITDEPTH) {
60 : // vpx_image_t uses byte strides and a pointer to the first byte
61 : // of the image.
62 : img->fmt = (vpx_img_fmt_t)(img->fmt | VPX_IMG_FMT_HIGHBITDEPTH);
63 : img->bit_depth = yv12->bit_depth;
64 : img->planes[VPX_PLANE_Y] = (uint8_t *)CONVERT_TO_SHORTPTR(yv12->y_buffer);
65 : img->planes[VPX_PLANE_U] = (uint8_t *)CONVERT_TO_SHORTPTR(yv12->u_buffer);
66 : img->planes[VPX_PLANE_V] = (uint8_t *)CONVERT_TO_SHORTPTR(yv12->v_buffer);
67 : img->planes[VPX_PLANE_ALPHA] = NULL;
68 : img->stride[VPX_PLANE_Y] = 2 * yv12->y_stride;
69 : img->stride[VPX_PLANE_U] = 2 * yv12->uv_stride;
70 : img->stride[VPX_PLANE_V] = 2 * yv12->uv_stride;
71 : img->stride[VPX_PLANE_ALPHA] = 2 * yv12->y_stride;
72 : }
73 : #endif // CONFIG_VP9_HIGHBITDEPTH
74 0 : img->bps = bps;
75 0 : img->user_priv = user_priv;
76 0 : img->img_data = yv12->buffer_alloc;
77 0 : img->img_data_owner = 0;
78 0 : img->self_allocd = 0;
79 0 : }
80 :
81 0 : static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img,
82 : YV12_BUFFER_CONFIG *yv12) {
83 0 : yv12->y_buffer = img->planes[VPX_PLANE_Y];
84 0 : yv12->u_buffer = img->planes[VPX_PLANE_U];
85 0 : yv12->v_buffer = img->planes[VPX_PLANE_V];
86 :
87 0 : yv12->y_crop_width = img->d_w;
88 0 : yv12->y_crop_height = img->d_h;
89 0 : yv12->render_width = img->r_w;
90 0 : yv12->render_height = img->r_h;
91 0 : yv12->y_width = img->d_w;
92 0 : yv12->y_height = img->d_h;
93 :
94 0 : yv12->uv_width =
95 0 : img->x_chroma_shift == 1 ? (1 + yv12->y_width) / 2 : yv12->y_width;
96 0 : yv12->uv_height =
97 0 : img->y_chroma_shift == 1 ? (1 + yv12->y_height) / 2 : yv12->y_height;
98 0 : yv12->uv_crop_width = yv12->uv_width;
99 0 : yv12->uv_crop_height = yv12->uv_height;
100 :
101 0 : yv12->y_stride = img->stride[VPX_PLANE_Y];
102 0 : yv12->uv_stride = img->stride[VPX_PLANE_U];
103 0 : yv12->color_space = img->cs;
104 0 : yv12->color_range = img->range;
105 :
106 : #if CONFIG_VP9_HIGHBITDEPTH
107 : if (img->fmt & VPX_IMG_FMT_HIGHBITDEPTH) {
108 : // In vpx_image_t
109 : // planes point to uint8 address of start of data
110 : // stride counts uint8s to reach next row
111 : // In YV12_BUFFER_CONFIG
112 : // y_buffer, u_buffer, v_buffer point to uint16 address of data
113 : // stride and border counts in uint16s
114 : // This means that all the address calculations in the main body of code
115 : // should work correctly.
116 : // However, before we do any pixel operations we need to cast the address
117 : // to a uint16 ponter and double its value.
118 : yv12->y_buffer = CONVERT_TO_BYTEPTR(yv12->y_buffer);
119 : yv12->u_buffer = CONVERT_TO_BYTEPTR(yv12->u_buffer);
120 : yv12->v_buffer = CONVERT_TO_BYTEPTR(yv12->v_buffer);
121 : yv12->y_stride >>= 1;
122 : yv12->uv_stride >>= 1;
123 : yv12->flags = YV12_FLAG_HIGHBITDEPTH;
124 : } else {
125 : yv12->flags = 0;
126 : }
127 : yv12->border = (yv12->y_stride - img->w) / 2;
128 : #else
129 0 : yv12->border = (img->stride[VPX_PLANE_Y] - img->w) / 2;
130 : #endif // CONFIG_VP9_HIGHBITDEPTH
131 0 : yv12->subsampling_x = img->x_chroma_shift;
132 0 : yv12->subsampling_y = img->y_chroma_shift;
133 0 : return VPX_CODEC_OK;
134 : }
135 :
136 0 : static VP9_REFFRAME ref_frame_to_vp9_reframe(vpx_ref_frame_type_t frame) {
137 0 : switch (frame) {
138 0 : case VP8_LAST_FRAME: return VP9_LAST_FLAG;
139 0 : case VP8_GOLD_FRAME: return VP9_GOLD_FLAG;
140 0 : case VP8_ALTR_FRAME: return VP9_ALT_FLAG;
141 : }
142 0 : assert(0 && "Invalid Reference Frame");
143 : return VP9_LAST_FLAG;
144 : }
145 : #endif // VP9_VP9_IFACE_COMMON_H_
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