1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/*
* v410 decoder
*
* Copyright (c) 2011 Derek Buitenhuis
*
* This file is part of Libav.
*
* Libav is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* Libav is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/intreadwrite.h"
#include "avcodec.h"
static av_cold int v410_decode_init(AVCodecContext *avctx)
{
avctx->pix_fmt = PIX_FMT_YUV444P10;
avctx->bits_per_raw_sample = 10;
if (avctx->width & 1) {
av_log(avctx, AV_LOG_ERROR, "v410 requires even width.\n");
return AVERROR_INVALIDDATA;
}
avctx->coded_frame = avcodec_alloc_frame();
if (!avctx->coded_frame) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
return AVERROR(ENOMEM);
}
return 0;
}
static int v410_decode_frame(AVCodecContext *avctx, void *data,
int *data_size, AVPacket *avpkt)
{
AVFrame *pic = avctx->coded_frame;
uint8_t *src = avpkt->data;
uint16_t *y, *u, *v;
uint32_t val;
int i, j;
if (pic->data[0])
avctx->release_buffer(avctx, pic);
if (avpkt->size < 4 * avctx->height * avctx->width) {
av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
return AVERROR(EINVAL);
}
pic->reference = 0;
if (avctx->get_buffer(avctx, pic) < 0) {
av_log(avctx, AV_LOG_ERROR, "Could not allocate buffer.\n");
return AVERROR(ENOMEM);
}
pic->key_frame = 1;
pic->pict_type = AV_PICTURE_TYPE_I;
y = (uint16_t *)pic->data[0];
u = (uint16_t *)pic->data[1];
v = (uint16_t *)pic->data[2];
for (i = 0; i < avctx->height; i++) {
for (j = 0; j < avctx->width; j++) {
val = AV_RL32(src);
u[j] = (val >> 2) & 0x3FF;
y[j] = (val >> 12) & 0x3FF;
v[j] = (val >> 22);
src += 4;
}
y += pic->linesize[0] >> 1;
u += pic->linesize[1] >> 1;
v += pic->linesize[2] >> 1;
}
*data_size = sizeof(AVFrame);
*(AVFrame *)data = *pic;
return avpkt->size;
}
static av_cold int v410_decode_close(AVCodecContext *avctx)
{
if (avctx->coded_frame->data[0])
avctx->release_buffer(avctx, avctx->coded_frame);
av_freep(&avctx->coded_frame);
return 0;
}
AVCodec ff_v410_decoder = {
.name = "v410",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_V410,
.init = v410_decode_init,
.decode = v410_decode_frame,
.close = v410_decode_close,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
};
|
