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
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
/*
* R210 decoder
*
* Copyright (c) 2009 Reimar Doeffinger <Reimar.Doeffinger@gmx.de>
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avcodec.h"
#include "libavutil/bswap.h"
static av_cold int decode_init(AVCodecContext *avctx)
{
avctx->pix_fmt = PIX_FMT_RGB48;
avctx->bits_per_raw_sample = 10;
avctx->coded_frame = avcodec_alloc_frame();
return 0;
}
static int decode_frame(AVCodecContext *avctx, void *data, int *data_size,
AVPacket *avpkt)
{
int h, w;
AVFrame *pic = avctx->coded_frame;
const uint32_t *src = (const uint32_t *)avpkt->data;
int aligned_width = FFALIGN(avctx->width, 64);
uint8_t *dst_line;
if (pic->data[0])
avctx->release_buffer(avctx, pic);
if (avpkt->size < 4 * aligned_width * avctx->height) {
av_log(avctx, AV_LOG_ERROR, "packet too small\n");
return -1;
}
pic->reference = 0;
if (avctx->get_buffer(avctx, pic) < 0)
return -1;
pic->pict_type = AV_PICTURE_TYPE_I;
pic->key_frame = 1;
dst_line = pic->data[0];
for (h = 0; h < avctx->height; h++) {
uint16_t *dst = (uint16_t *)dst_line;
for (w = 0; w < avctx->width; w++) {
uint32_t pixel;
uint16_t r, g, b;
if (avctx->codec_id==CODEC_ID_AVRP) {
pixel = av_le2ne32(*src++);
} else {
pixel = av_be2ne32(*src++);
}
if (avctx->codec_id==CODEC_ID_R210) {
b = pixel << 6;
g = (pixel >> 4) & 0xffc0;
r = (pixel >> 14) & 0xffc0;
} else {
b = pixel << 4;
g = (pixel >> 6) & 0xffc0;
r = (pixel >> 16) & 0xffc0;
}
*dst++ = r | (r >> 10);
*dst++ = g | (g >> 10);
*dst++ = b | (b >> 10);
}
src += aligned_width - avctx->width;
dst_line += pic->linesize[0];
}
*data_size = sizeof(AVFrame);
*(AVFrame*)data = *avctx->coded_frame;
return avpkt->size;
}
static av_cold int decode_close(AVCodecContext *avctx)
{
AVFrame *pic = avctx->coded_frame;
if (pic->data[0])
avctx->release_buffer(avctx, pic);
av_freep(&avctx->coded_frame);
return 0;
}
#if CONFIG_R210_DECODER
AVCodec ff_r210_decoder = {
.name = "r210",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_R210,
.init = decode_init,
.close = decode_close,
.decode = decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Uncompressed RGB 10-bit"),
};
#endif
#if CONFIG_R10K_DECODER
AVCodec ff_r10k_decoder = {
.name = "r10k",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_R10K,
.init = decode_init,
.close = decode_close,
.decode = decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("AJA Kona 10-bit RGB Codec"),
};
#endif
#if CONFIG_AVRP_DECODER
AVCodec ff_avrp_decoder = {
.name = "avrp",
.type = AVMEDIA_TYPE_VIDEO,
.id = CODEC_ID_AVRP,
.init = decode_init,
.close = decode_close,
.decode = decode_frame,
.capabilities = CODEC_CAP_DR1,
.long_name = NULL_IF_CONFIG_SMALL("Avid 1:1 10-bit RGB Packer"),
};
#endif
|
