4 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
5 * Copyright (c) 2009 Baptiste Coudurier <baptiste dot coudurier at gmail dot com>
7 * This file is part of Libav.
9 * Libav is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * Libav is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with Libav; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "bytestream.h"
27 static av_cold
int encode_init(AVCodecContext
*avctx
)
29 if (avctx
->width
& 1) {
30 av_log(avctx
, AV_LOG_ERROR
, "v210 needs even width\n");
31 return AVERROR(EINVAL
);
34 if (avctx
->pix_fmt
!= PIX_FMT_YUV422P10
) {
35 av_log(avctx
, AV_LOG_ERROR
, "v210 needs YUV422P10\n");
39 if (avctx
->bits_per_raw_sample
!= 10)
40 av_log(avctx
, AV_LOG_WARNING
, "bits per raw sample: %d != 10-bit\n",
41 avctx
->bits_per_raw_sample
);
43 avctx
->coded_frame
= avcodec_alloc_frame();
44 if (!avctx
->coded_frame
)
45 return AVERROR(ENOMEM
);
47 avctx
->coded_frame
->pict_type
= AV_PICTURE_TYPE_I
;
52 static int encode_frame(AVCodecContext
*avctx
, unsigned char *buf
,
53 int buf_size
, void *data
)
55 const AVFrame
*pic
= data
;
56 int aligned_width
= ((avctx
->width
+ 47) / 48) * 48;
57 int stride
= aligned_width
* 8 / 3;
59 const uint16_t *y
= (const uint16_t*)pic
->data
[0];
60 const uint16_t *u
= (const uint16_t*)pic
->data
[1];
61 const uint16_t *v
= (const uint16_t*)pic
->data
[2];
65 if (buf_size
< aligned_width
* avctx
->height
* 8 / 3) {
66 av_log(avctx
, AV_LOG_ERROR
, "output buffer too small\n");
67 return AVERROR(ENOMEM
);
70 #define CLIP(v) av_clip(v, 4, 1019)
72 #define WRITE_PIXELS(a, b, c) \
75 val |= (CLIP(*b++) << 10) | \
77 bytestream_put_le32(&p, val); \
80 for (h
= 0; h
< avctx
->height
; h
++) {
82 for (w
= 0; w
< avctx
->width
- 5; w
+= 6) {
83 WRITE_PIXELS(u
, y
, v
);
84 WRITE_PIXELS(y
, u
, y
);
85 WRITE_PIXELS(v
, y
, u
);
86 WRITE_PIXELS(y
, v
, y
);
88 if (w
< avctx
->width
- 1) {
89 WRITE_PIXELS(u
, y
, v
);
92 if (w
== avctx
->width
- 2)
93 bytestream_put_le32(&p
, val
);
95 if (w
< avctx
->width
- 3) {
96 val
|= (CLIP(*u
++) << 10) | (CLIP(*y
++) << 20);
97 bytestream_put_le32(&p
, val
);
99 val
= CLIP(*v
++) | (CLIP(*y
++) << 10);
100 bytestream_put_le32(&p
, val
);
104 memset(p
, 0, pdst
- p
);
106 y
+= pic
->linesize
[0] / 2 - avctx
->width
;
107 u
+= pic
->linesize
[1] / 2 - avctx
->width
/ 2;
108 v
+= pic
->linesize
[2] / 2 - avctx
->width
/ 2;
114 static av_cold
int encode_close(AVCodecContext
*avctx
)
116 av_freep(&avctx
->coded_frame
);
121 AVCodec ff_v210_encoder
= {
123 .type
= AVMEDIA_TYPE_VIDEO
,
126 .encode
= encode_frame
,
127 .close
= encode_close
,
128 .pix_fmts
= (const enum PixelFormat
[]){PIX_FMT_YUV422P10
, PIX_FMT_NONE
},
129 .long_name
= NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),