2 * Pinnacle TARGA CineWave YUV16 decoder
3 * Copyright (c) 2012 Carl Eugen Hoyos
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25 static av_cold
int y216_decode_init(AVCodecContext
*avctx
)
27 avctx
->pix_fmt
= AV_PIX_FMT_YUV422P16
;
28 avctx
->bits_per_raw_sample
= 14;
33 static int y216_decode_frame(AVCodecContext
*avctx
, void *data
,
34 int *got_frame
, AVPacket
*avpkt
)
37 const uint16_t *src
= (uint16_t *)avpkt
->data
;
38 uint16_t *y
, *u
, *v
, aligned_width
= FFALIGN(avctx
->width
, 4);
41 if (avpkt
->size
< 4 * avctx
->height
* aligned_width
) {
42 av_log(avctx
, AV_LOG_ERROR
, "Insufficient input data.\n");
43 return AVERROR(EINVAL
);
46 if ((ret
= ff_get_buffer(avctx
, pic
, 0)) < 0)
50 pic
->pict_type
= AV_PICTURE_TYPE_I
;
52 y
= (uint16_t *)pic
->data
[0];
53 u
= (uint16_t *)pic
->data
[1];
54 v
= (uint16_t *)pic
->data
[2];
56 for (i
= 0; i
< avctx
->height
; i
++) {
57 for (j
= 0; j
< avctx
->width
>> 1; j
++) {
58 u
[ j
] = src
[4 * j
] << 2 | src
[4 * j
] >> 14;
59 y
[2 * j
] = src
[4 * j
+ 1] << 2 | src
[4 * j
+ 1] >> 14;
60 v
[ j
] = src
[4 * j
+ 2] << 2 | src
[4 * j
+ 2] >> 14;
61 y
[2 * j
+ 1] = src
[4 * j
+ 3] << 2 | src
[4 * j
+ 3] >> 14;
64 y
+= pic
->linesize
[0] >> 1;
65 u
+= pic
->linesize
[1] >> 1;
66 v
+= pic
->linesize
[2] >> 1;
67 src
+= aligned_width
<< 1;
75 AVCodec ff_targa_y216_decoder
= {
77 .long_name
= NULL_IF_CONFIG_SMALL("Pinnacle TARGA CineWave YUV16"),
78 .type
= AVMEDIA_TYPE_VIDEO
,
79 .id
= AV_CODEC_ID_TARGA_Y216
,
80 .init
= y216_decode_init
,
81 .decode
= y216_decode_frame
,
82 .capabilities
= CODEC_CAP_DR1
,