FFmpeg
libaom.c
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1 /*
2  * This file is part of FFmpeg.
3  *
4  * FFmpeg is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Lesser General Public
6  * License as published by the Free Software Foundation; either
7  * version 2.1 of the License, or (at your option) any later version.
8  *
9  * FFmpeg is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  * Lesser General Public License for more details.
13  *
14  * You should have received a copy of the GNU Lesser General Public
15  * License along with FFmpeg; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17  */
18 
19 /**
20  * @file
21  * AOM common functions
22  */
23 
24 #include "libavutil/pixdesc.h"
25 #include "libaom.h"
26 
27 void ff_aom_image_copy_16_to_8(AVFrame *pic, struct aom_image *img)
28 {
30  int i;
31 
32  for (i = 0; i < desc->nb_components; i++) {
33  int w = img->d_w;
34  int h = img->d_h;
35  int x, y;
36 
37  if (i) {
38  w = (w + img->x_chroma_shift) >> img->x_chroma_shift;
39  h = (h + img->y_chroma_shift) >> img->y_chroma_shift;
40  }
41 
42  for (y = 0; y < h; y++) {
43  uint16_t *src = (uint16_t *)(img->planes[i] + y * img->stride[i]);
44  uint8_t *dst = pic->data[i] + y * pic->linesize[i];
45  for (x = 0; x < w; x++)
46  *dst++ = *src++;
47  }
48  }
49 }
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2807
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:325
pixdesc.h
w
uint8_t w
Definition: llviddspenc.c:38
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:346
AVFrame::format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
Definition: frame.h:412
img
#define img
Definition: vf_colormatrix.c:116
i
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
desc
const char * desc
Definition: libsvtav1.c:83
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:69
ff_aom_image_copy_16_to_8
void ff_aom_image_copy_16_to_8(AVFrame *pic, struct aom_image *img)
Definition: libaom.c:27
src
INIT_CLIP pixel * src
Definition: h264pred_template.c:418
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, a positive or negative value, which is typically indicating the size in bytes of each pict...
Definition: frame.h:370
h
h
Definition: vp9dsp_template.c:2038
libaom.h