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ffmpeg / libavcodec / rawenc.c @ 72415b2a

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/*
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 * Raw Video Encoder
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 * Copyright (c) 2001 Fabrice Bellard
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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/**
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 * @file libavcodec/rawenc.c
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 * Raw Video Encoder
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 */
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#include "avcodec.h"
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#include "raw.h"
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#include "libavutil/pixdesc.h"
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#include "libavutil/intreadwrite.h"
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static av_cold int raw_init_encoder(AVCodecContext *avctx)
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{
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    avctx->coded_frame = (AVFrame *)avctx->priv_data;
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    avctx->coded_frame->pict_type = FF_I_TYPE;
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    avctx->coded_frame->key_frame = 1;
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    avctx->bits_per_coded_sample = av_get_bits_per_pixel(&av_pix_fmt_descriptors[avctx->pix_fmt]);
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    if(!avctx->codec_tag)
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        avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
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    return 0;
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}
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static int raw_encode(AVCodecContext *avctx,
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                            unsigned char *frame, int buf_size, void *data)
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{
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    int ret = avpicture_layout((AVPicture *)data, avctx->pix_fmt, avctx->width,
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                                               avctx->height, frame, buf_size);
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    if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
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       avctx->pix_fmt   == PIX_FMT_YUYV422) {
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        int x;
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        for(x = 1; x < avctx->height*avctx->width*2; x += 2)
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            frame[x] ^= 0x80;
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    }
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    return ret;
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}
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AVCodec rawvideo_encoder = {
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    "rawvideo",
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    AVMEDIA_TYPE_VIDEO,
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    CODEC_ID_RAWVIDEO,
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    sizeof(AVFrame),
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    raw_init_encoder,
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    raw_encode,
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    .long_name = NULL_IF_CONFIG_SMALL("raw video"),
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};