2 * Copyright (C) 2009 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
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.
11 * FFmpeg is distributed in the hope that it will be useful,
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.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 #include "libavutil/bswap.h"
24 #include "libavutil/internal.h"
25 #include "libavutil/mem.h"
27 static av_cold int decode_init(AVCodecContext *avctx)
29 if (avctx->width & 1) {
30 av_log(avctx, AV_LOG_ERROR, "v210x needs even width\n");
31 return AVERROR(EINVAL);
33 avctx->pix_fmt = AV_PIX_FMT_YUV422P16;
34 avctx->bits_per_raw_sample = 10;
39 static int decode_frame(AVCodecContext *avctx, void *data, int *got_frame,
42 const uint32_t *src = (const uint32_t *)avpkt->data;
44 int width = avctx->width;
46 uint16_t *ydst, *udst, *vdst, *yend;
49 if (avpkt->size < avctx->width * avctx->height * 8 / 3) {
50 av_log(avctx, AV_LOG_ERROR, "Packet too small\n");
51 return AVERROR_INVALIDDATA;
54 if (avpkt->size > avctx->width * avctx->height * 8 / 3) {
55 avpriv_request_sample(avctx, "(Probably) padded data");
58 if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
61 ydst = (uint16_t *)pic->data[0];
62 udst = (uint16_t *)pic->data[1];
63 vdst = (uint16_t *)pic->data[2];
65 pic->pict_type = AV_PICTURE_TYPE_I;
69 uint32_t v = av_be2ne32(*src++);
70 *udst++ = (v >> 16) & 0xFFC0;
71 *ydst++ = (v >> 6 ) & 0xFFC0;
72 *vdst++ = (v << 4 ) & 0xFFC0;
74 v = av_be2ne32(*src++);
75 *ydst++ = (v >> 16) & 0xFFC0;
78 ydst += pic->linesize[0] / 2 - width;
79 udst += pic->linesize[1] / 2 - width / 2;
80 vdst += pic->linesize[2] / 2 - width / 2;
82 if (++y >= avctx->height)
86 *udst++ = (v >> 6 ) & 0xFFC0;
87 *ydst++ = (v << 4 ) & 0xFFC0;
89 v = av_be2ne32(*src++);
90 *vdst++ = (v >> 16) & 0xFFC0;
91 *ydst++ = (v >> 6 ) & 0xFFC0;
94 ydst += pic->linesize[0] / 2 - width;
95 udst += pic->linesize[1] / 2 - width / 2;
96 vdst += pic->linesize[2] / 2 - width / 2;
98 if (++y >= avctx->height)
102 *udst++ = (v << 4 ) & 0xFFC0;
104 v = av_be2ne32(*src++);
105 *ydst++ = (v >> 16) & 0xFFC0;
106 *vdst++ = (v >> 6 ) & 0xFFC0;
107 *ydst++ = (v << 4 ) & 0xFFC0;
109 ydst += pic->linesize[0] / 2 - width;
110 udst += pic->linesize[1] / 2 - width / 2;
111 vdst += pic->linesize[2] / 2 - width / 2;
113 if (++y >= avctx->height)
123 AVCodec ff_v210x_decoder = {
125 .long_name = NULL_IF_CONFIG_SMALL("Uncompressed 4:2:2 10-bit"),
126 .type = AVMEDIA_TYPE_VIDEO,
127 .id = AV_CODEC_ID_V210X,
129 .decode = decode_frame,
130 .capabilities = AV_CODEC_CAP_DR1,