yading@10: /*
yading@10:  * Raw Video Encoder
yading@10:  * Copyright (c) 2001 Fabrice Bellard
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: /**
yading@10:  * @file
yading@10:  * Raw Video Encoder
yading@10:  */
yading@10: 
yading@10: #include "avcodec.h"
yading@10: #include "raw.h"
yading@10: #include "internal.h"
yading@10: #include "libavutil/pixdesc.h"
yading@10: #include "libavutil/intreadwrite.h"
yading@10: #include "libavutil/internal.h"
yading@10: 
yading@10: static av_cold int raw_init_encoder(AVCodecContext *avctx)
yading@10: {
yading@10:     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
yading@10: 
yading@10:     avctx->coded_frame            = avctx->priv_data;
yading@10:     avcodec_get_frame_defaults(avctx->coded_frame);
yading@10:     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
yading@10:     avctx->bits_per_coded_sample = av_get_bits_per_pixel(desc);
yading@10:     if(!avctx->codec_tag)
yading@10:         avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static int raw_encode(AVCodecContext *avctx, AVPacket *pkt,
yading@10:                       const AVFrame *frame, int *got_packet)
yading@10: {
yading@10:     int ret = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
yading@10: 
yading@10:     if (ret < 0)
yading@10:         return ret;
yading@10: 
yading@10:     if ((ret = ff_alloc_packet2(avctx, pkt, ret)) < 0)
yading@10:         return ret;
yading@10:     if ((ret = avpicture_layout((const AVPicture *)frame, avctx->pix_fmt, avctx->width,
yading@10:                                 avctx->height, pkt->data, pkt->size)) < 0)
yading@10:         return ret;
yading@10: 
yading@10:     if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
yading@10:        avctx->pix_fmt   == AV_PIX_FMT_YUYV422) {
yading@10:         int x;
yading@10:         for(x = 1; x < avctx->height*avctx->width*2; x += 2)
yading@10:             pkt->data[x] ^= 0x80;
yading@10:     }
yading@10:     pkt->flags |= AV_PKT_FLAG_KEY;
yading@10:     *got_packet = 1;
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: AVCodec ff_rawvideo_encoder = {
yading@10:     .name           = "rawvideo",
yading@10:     .type           = AVMEDIA_TYPE_VIDEO,
yading@10:     .id             = AV_CODEC_ID_RAWVIDEO,
yading@10:     .priv_data_size = sizeof(AVFrame),
yading@10:     .init           = raw_init_encoder,
yading@10:     .encode2        = raw_encode,
yading@10:     .long_name      = NULL_IF_CONFIG_SMALL("raw video"),
yading@10: };