1e53bdbdda4bef63a83d073f7dc75b2c85378716
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 FFmpeg.
9 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 #include "bytestream.h"
28 static av_cold
int encode_init(AVCodecContext
*avctx
)
30 if (avctx
->width
& 1) {
31 av_log(avctx
, AV_LOG_ERROR
, "v210 needs even width\n");
32 return AVERROR(EINVAL
);
35 if (avctx
->bits_per_raw_sample
!= 10)
36 av_log(avctx
, AV_LOG_WARNING
, "bits per raw sample: %d != 10-bit\n",
37 avctx
->bits_per_raw_sample
);
39 avctx
->coded_frame
= av_frame_alloc();
40 if (!avctx
->coded_frame
)
41 return AVERROR(ENOMEM
);
43 avctx
->coded_frame
->pict_type
= AV_PICTURE_TYPE_I
;
48 static int encode_frame(AVCodecContext
*avctx
, AVPacket
*pkt
,
49 const AVFrame
*pic
, int *got_packet
)
51 int aligned_width
= ((avctx
->width
+ 47) / 48) * 48;
52 int stride
= aligned_width
* 8 / 3;
53 int line_padding
= stride
- ((avctx
->width
* 8 + 11) / 12) * 4;
55 const uint16_t *y
= (const uint16_t*)pic
->data
[0];
56 const uint16_t *u
= (const uint16_t*)pic
->data
[1];
57 const uint16_t *v
= (const uint16_t*)pic
->data
[2];
60 if ((ret
= ff_alloc_packet2(avctx
, pkt
, avctx
->height
* stride
)) < 0)
63 bytestream2_init_writer(&p
, pkt
->data
, pkt
->size
);
65 #define CLIP(v) av_clip(v, 4, 1019)
67 #define WRITE_PIXELS(a, b, c) \
70 val |= (CLIP(*b++) << 10) | \
72 bytestream2_put_le32u(&p, val); \
75 for (h
= 0; h
< avctx
->height
; h
++) {
77 for (w
= 0; w
< avctx
->width
- 5; w
+= 6) {
78 WRITE_PIXELS(u
, y
, v
);
79 WRITE_PIXELS(y
, u
, y
);
80 WRITE_PIXELS(v
, y
, u
);
81 WRITE_PIXELS(y
, v
, y
);
83 if (w
< avctx
->width
- 1) {
84 WRITE_PIXELS(u
, y
, v
);
87 if (w
== avctx
->width
- 2)
88 bytestream2_put_le32u(&p
, val
);
89 if (w
< avctx
->width
- 3) {
90 val
|= (CLIP(*u
++) << 10) | (CLIP(*y
++) << 20);
91 bytestream2_put_le32u(&p
, val
);
93 val
= CLIP(*v
++) | (CLIP(*y
++) << 10);
94 bytestream2_put_le32u(&p
, val
);
98 bytestream2_set_buffer(&p
, 0, line_padding
);
100 y
+= pic
->linesize
[0] / 2 - avctx
->width
;
101 u
+= pic
->linesize
[1] / 2 - avctx
->width
/ 2;
102 v
+= pic
->linesize
[2] / 2 - avctx
->width
/ 2;
105 pkt
->flags
|= AV_PKT_FLAG_KEY
;
110 static av_cold
int encode_close(AVCodecContext
*avctx
)
112 av_freep(&avctx
->coded_frame
);
117 AVCodec ff_v210_encoder
= {
119 .long_name
= NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
120 .type
= AVMEDIA_TYPE_VIDEO
,
121 .id
= AV_CODEC_ID_V210
,
123 .encode2
= encode_frame
,
124 .close
= encode_close
,
125 .pix_fmts
= (const enum AVPixelFormat
[]){ AV_PIX_FMT_YUV422P10
, AV_PIX_FMT_NONE
},