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 "libavutil/bswap.h"
27 static av_cold
int decode_init(AVCodecContext
*avctx
)
29 if (avctx
->width
& 1) {
30 av_log(avctx
, AV_LOG_ERROR
, "v210 needs even width\n");
33 if (avcodec_check_dimensions(avctx
, avctx
->width
, avctx
->height
) < 0)
35 avctx
->pix_fmt
= PIX_FMT_YUV422P16
;
36 avctx
->bits_per_raw_sample
= 10;
38 avctx
->coded_frame
= avcodec_alloc_frame();
43 static int decode_frame(AVCodecContext
*avctx
, void *data
, int *data_size
, AVPacket
*avpkt
)
46 AVFrame
*pic
= avctx
->coded_frame
;
47 const uint8_t *psrc
= avpkt
->data
;
49 int aligned_width
= ((avctx
->width
+ 47) / 48) * 48;
50 int stride
= aligned_width
* 8 / 3;
53 avctx
->release_buffer(avctx
, pic
);
55 if (avpkt
->size
< stride
* avctx
->height
) {
56 av_log(avctx
, AV_LOG_ERROR
, "packet too small\n");
61 if (avctx
->get_buffer(avctx
, pic
) < 0)
64 y
= (uint16_t*)pic
->data
[0];
65 u
= (uint16_t*)pic
->data
[1];
66 v
= (uint16_t*)pic
->data
[2];
67 pic
->pict_type
= FF_I_TYPE
;
70 #define READ_PIXELS(a, b, c) \
72 val = le2me_32(*src++); \
74 *b++ = (val >> 4) & 0xFFC0; \
75 *c++ = (val >> 14) & 0xFFC0; \
78 for (h
= 0; h
< avctx
->height
; h
++) {
79 const uint32_t *src
= (const uint32_t*)psrc
;
81 for (w
= 0; w
< avctx
->width
- 5; w
+= 6) {
87 if (w
< avctx
->width
- 1) {
90 val
= le2me_32(*src
++);
93 if (w
< avctx
->width
- 3) {
94 *u
++ = (val
>> 4) & 0xFFC0;
95 *y
++ = (val
>> 14) & 0xFFC0;
97 val
= le2me_32(*src
++);
99 *y
++ = (val
>> 4) & 0xFFC0;
103 y
+= pic
->linesize
[0]/2 - avctx
->width
;
104 u
+= pic
->linesize
[1]/2 - avctx
->width
/2;
105 v
+= pic
->linesize
[2]/2 - avctx
->width
/2;
108 *data_size
= sizeof(AVFrame
);
109 *(AVFrame
*)data
= *avctx
->coded_frame
;
114 static av_cold
int decode_close(AVCodecContext
*avctx
)
116 av_freep(&avctx
->coded_frame
);
121 AVCodec v210_decoder
= {
131 .long_name
= NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),