1/*
2 * Raw Video Encoder
3 * Copyright (c) 2001 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
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.
11 *
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.
16 *
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
20 */
21
22/**
23 * @file
24 * Raw Video Encoder
25 */
26
27#include "avcodec.h"
28#include "raw.h"
29#include "libavutil/pixdesc.h"
30#include "libavutil/intreadwrite.h"
31
32static av_cold int raw_init_encoder(AVCodecContext *avctx)
33{
34    avctx->coded_frame = (AVFrame *)avctx->priv_data;
35    avctx->coded_frame->pict_type = FF_I_TYPE;
36    avctx->coded_frame->key_frame = 1;
37    avctx->bits_per_coded_sample = av_get_bits_per_pixel(&av_pix_fmt_descriptors[avctx->pix_fmt]);
38    if(!avctx->codec_tag)
39        avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
40    return 0;
41}
42
43static int raw_encode(AVCodecContext *avctx,
44                            unsigned char *frame, int buf_size, void *data)
45{
46    int ret = avpicture_layout((AVPicture *)data, avctx->pix_fmt, avctx->width,
47                                               avctx->height, frame, buf_size);
48
49    if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
50       avctx->pix_fmt   == PIX_FMT_YUYV422) {
51        int x;
52        for(x = 1; x < avctx->height*avctx->width*2; x += 2)
53            frame[x] ^= 0x80;
54    }
55    return ret;
56}
57
58AVCodec rawvideo_encoder = {
59    "rawvideo",
60    AVMEDIA_TYPE_VIDEO,
61    CODEC_ID_RAWVIDEO,
62    sizeof(AVFrame),
63    raw_init_encoder,
64    raw_encode,
65    .long_name = NULL_IF_CONFIG_SMALL("raw video"),
66};
67