cosmetics: Align codec declarations
[libav.git] / libavcodec / v210x.c
CommitLineData
97f92143
MN
1/*
2 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
3 *
2912e87a 4 * This file is part of Libav.
97f92143 5 *
2912e87a 6 * Libav is free software; you can redistribute it and/or
97f92143
MN
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
2912e87a 11 * Libav is distributed in the hope that it will be useful,
97f92143
MN
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
2912e87a 17 * License along with Libav; if not, write to the Free Software
97f92143
MN
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include "avcodec.h"
22#include "libavutil/bswap.h"
23
24static av_cold int decode_init(AVCodecContext *avctx)
25{
26 if(avctx->width & 1){
27 av_log(avctx, AV_LOG_ERROR, "v210x needs even width\n");
28 return -1;
29 }
97f92143
MN
30 avctx->pix_fmt = PIX_FMT_YUV422P16;
31 avctx->bits_per_raw_sample= 10;
32
33 avctx->coded_frame= avcodec_alloc_frame();
34
35 return 0;
36}
37
38static int decode_frame(AVCodecContext *avctx, void *data, int *data_size, AVPacket *avpkt)
39{
40 int y=0;
41 int width= avctx->width;
42 AVFrame *pic= avctx->coded_frame;
b157e3e5 43 const uint32_t *src= (const uint32_t *)avpkt->data;
97f92143
MN
44 uint16_t *ydst, *udst, *vdst, *yend;
45
46 if(pic->data[0])
47 avctx->release_buffer(avctx, pic);
48
49 if(avpkt->size < avctx->width * avctx->height * 8 / 3){
50 av_log(avctx, AV_LOG_ERROR, "Packet too small\n");
51 return -1;
52 }
53
54 if(avpkt->size > avctx->width * avctx->height * 8 / 3){
70fb031c 55 av_log_ask_for_sample(avctx, "Probably padded data\n");
97f92143
MN
56 }
57
58 pic->reference= 0;
59 if(avctx->get_buffer(avctx, pic) < 0)
60 return -1;
61
b157e3e5
RD
62 ydst= (uint16_t *)pic->data[0];
63 udst= (uint16_t *)pic->data[1];
64 vdst= (uint16_t *)pic->data[2];
97f92143 65 yend= ydst + width;
975a1447 66 pic->pict_type= AV_PICTURE_TYPE_I;
97f92143
MN
67 pic->key_frame= 1;
68
69 for(;;){
8fc0162a 70 uint32_t v= av_be2ne32(*src++);
97f92143
MN
71 *udst++= (v>>16) & 0xFFC0;
72 *ydst++= (v>>6 ) & 0xFFC0;
73 *vdst++= (v<<4 ) & 0xFFC0;
74
8fc0162a 75 v= av_be2ne32(*src++);
97f92143
MN
76 *ydst++= (v>>16) & 0xFFC0;
77
78 if(ydst >= yend){
79 ydst+= pic->linesize[0]/2 - width;
80 udst+= pic->linesize[1]/2 - width/2;
81 vdst+= pic->linesize[2]/2 - width/2;
82 yend= ydst + width;
83 if(++y >= avctx->height)
84 break;
85 }
86
87 *udst++= (v>>6 ) & 0xFFC0;
88 *ydst++= (v<<4 ) & 0xFFC0;
89
8fc0162a 90 v= av_be2ne32(*src++);
97f92143
MN
91 *vdst++= (v>>16) & 0xFFC0;
92 *ydst++= (v>>6 ) & 0xFFC0;
93
94 if(ydst >= yend){
95 ydst+= pic->linesize[0]/2 - width;
96 udst+= pic->linesize[1]/2 - width/2;
97 vdst+= pic->linesize[2]/2 - width/2;
98 yend= ydst + width;
99 if(++y >= avctx->height)
100 break;
101 }
102
103 *udst++= (v<<4 ) & 0xFFC0;
104
8fc0162a 105 v= av_be2ne32(*src++);
97f92143
MN
106 *ydst++= (v>>16) & 0xFFC0;
107 *vdst++= (v>>6 ) & 0xFFC0;
108 *ydst++= (v<<4 ) & 0xFFC0;
109 if(ydst >= yend){
110 ydst+= pic->linesize[0]/2 - width;
111 udst+= pic->linesize[1]/2 - width/2;
112 vdst+= pic->linesize[2]/2 - width/2;
113 yend= ydst + width;
114 if(++y >= avctx->height)
115 break;
116 }
117 }
118
119 *data_size=sizeof(AVFrame);
120 *(AVFrame*)data= *avctx->coded_frame;
121
122 return avpkt->size;
123}
124
0fbb0185
RD
125static av_cold int decode_close(AVCodecContext *avctx)
126{
127 AVFrame *pic = avctx->coded_frame;
128 if (pic->data[0])
129 avctx->release_buffer(avctx, pic);
130 av_freep(&avctx->coded_frame);
131
132 return 0;
133}
134
d36beb3f 135AVCodec ff_v210x_decoder = {
ec6402b7
AK
136 .name = "v210x",
137 .type = AVMEDIA_TYPE_VIDEO,
138 .id = CODEC_ID_V210X,
139 .init = decode_init,
140 .close = decode_close,
141 .decode = decode_frame,
142 .capabilities = CODEC_CAP_DR1,
00c3b67b 143 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
97f92143 144};