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comparison: media/libvpx/vp9/vp9_iface_common.h
media/libvpx/vp9/vp9_iface_common.h
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- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:14a854a4409c |
|---|---|
| 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 static void yuvconfig2image(vpx_image_t *img, const YV12_BUFFER_CONFIG *yv12, | |
| 14 void *user_priv) { | |
| 15 /** vpx_img_wrap() doesn't allow specifying independent strides for | |
| 16 * the Y, U, and V planes, nor other alignment adjustments that | |
| 17 * might be representable by a YV12_BUFFER_CONFIG, so we just | |
| 18 * initialize all the fields.*/ | |
| 19 int bps = 12; | |
| 20 if (yv12->uv_height == yv12->y_height) { | |
| 21 if (yv12->uv_width == yv12->y_width) { | |
| 22 img->fmt = VPX_IMG_FMT_I444; | |
| 23 bps = 24; | |
| 24 } else { | |
| 25 img->fmt = VPX_IMG_FMT_I422; | |
| 26 bps = 16; | |
| 27 } | |
| 28 } else { | |
| 29 img->fmt = VPX_IMG_FMT_I420; | |
| 30 } | |
| 31 img->w = yv12->y_stride; | |
| 32 img->h = ALIGN_POWER_OF_TWO(yv12->y_height + 2 * VP9BORDERINPIXELS, 3); | |
| 33 img->d_w = yv12->y_crop_width; | |
| 34 img->d_h = yv12->y_crop_height; | |
| 35 img->x_chroma_shift = yv12->uv_width < yv12->y_width; | |
| 36 img->y_chroma_shift = yv12->uv_height < yv12->y_height; | |
| 37 img->planes[VPX_PLANE_Y] = yv12->y_buffer; | |
| 38 img->planes[VPX_PLANE_U] = yv12->u_buffer; | |
| 39 img->planes[VPX_PLANE_V] = yv12->v_buffer; | |
| 40 img->planes[VPX_PLANE_ALPHA] = yv12->alpha_buffer; | |
| 41 img->stride[VPX_PLANE_Y] = yv12->y_stride; | |
| 42 img->stride[VPX_PLANE_U] = yv12->uv_stride; | |
| 43 img->stride[VPX_PLANE_V] = yv12->uv_stride; | |
| 44 img->stride[VPX_PLANE_ALPHA] = yv12->alpha_stride; | |
| 45 img->bps = bps; | |
| 46 img->user_priv = user_priv; | |
| 47 img->img_data = yv12->buffer_alloc; | |
| 48 img->img_data_owner = 0; | |
| 49 img->self_allocd = 0; | |
| 50 } | |
| 51 | |
| 52 static vpx_codec_err_t image2yuvconfig(const vpx_image_t *img, | |
| 53 YV12_BUFFER_CONFIG *yv12) { | |
| 54 yv12->y_buffer = img->planes[VPX_PLANE_Y]; | |
| 55 yv12->u_buffer = img->planes[VPX_PLANE_U]; | |
| 56 yv12->v_buffer = img->planes[VPX_PLANE_V]; | |
| 57 yv12->alpha_buffer = img->planes[VPX_PLANE_ALPHA]; | |
| 58 | |
| 59 yv12->y_crop_width = img->d_w; | |
| 60 yv12->y_crop_height = img->d_h; | |
| 61 yv12->y_width = img->d_w; | |
| 62 yv12->y_height = img->d_h; | |
| 63 | |
| 64 yv12->uv_width = img->x_chroma_shift == 1 ? (1 + yv12->y_width) / 2 | |
| 65 : yv12->y_width; | |
| 66 yv12->uv_height = img->y_chroma_shift == 1 ? (1 + yv12->y_height) / 2 | |
| 67 : yv12->y_height; | |
| 68 | |
| 69 yv12->alpha_width = yv12->alpha_buffer ? img->d_w : 0; | |
| 70 yv12->alpha_height = yv12->alpha_buffer ? img->d_h : 0; | |
| 71 | |
| 72 yv12->y_stride = img->stride[VPX_PLANE_Y]; | |
| 73 yv12->uv_stride = img->stride[VPX_PLANE_U]; | |
| 74 yv12->alpha_stride = yv12->alpha_buffer ? img->stride[VPX_PLANE_ALPHA] : 0; | |
| 75 | |
| 76 yv12->border = (img->stride[VPX_PLANE_Y] - img->w) / 2; | |
| 77 #if CONFIG_ALPHA | |
| 78 // For development purposes, force alpha to hold the same data a Y for now. | |
| 79 yv12->alpha_buffer = yv12->y_buffer; | |
| 80 yv12->alpha_width = yv12->y_width; | |
| 81 yv12->alpha_height = yv12->y_height; | |
| 82 yv12->alpha_stride = yv12->y_stride; | |
| 83 #endif | |
| 84 return VPX_CODEC_OK; | |
| 85 } | |
| 86 | |
| 87 #endif // VP9_VP9_IFACE_COMMON_H_ |
