• Main Page
  • Related Pages
  • Modules
  • Data Structures
  • Files
  • File List
  • Globals

libavcodec/rawenc.c

Go to the documentation of this file.
00001 /*
00002  * Raw Video Encoder
00003  * Copyright (c) 2001 Fabrice Bellard
00004  *
00005  * This file is part of FFmpeg.
00006  *
00007  * FFmpeg is free software; you can redistribute it and/or
00008  * modify it under the terms of the GNU Lesser General Public
00009  * License as published by the Free Software Foundation; either
00010  * version 2.1 of the License, or (at your option) any later version.
00011  *
00012  * FFmpeg is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015  * Lesser General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU Lesser General Public
00018  * License along with FFmpeg; if not, write to the Free Software
00019  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
00020  */
00021 
00027 #include "avcodec.h"
00028 #include "raw.h"
00029 #include "libavutil/pixdesc.h"
00030 #include "libavutil/intreadwrite.h"
00031 
00032 static av_cold int raw_init_encoder(AVCodecContext *avctx)
00033 {
00034     avctx->coded_frame = (AVFrame *)avctx->priv_data;
00035     avctx->coded_frame->pict_type = FF_I_TYPE;
00036     avctx->coded_frame->key_frame = 1;
00037     avctx->bits_per_coded_sample = av_get_bits_per_pixel(&av_pix_fmt_descriptors[avctx->pix_fmt]);
00038     if(!avctx->codec_tag)
00039         avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
00040     return 0;
00041 }
00042 
00043 static int raw_encode(AVCodecContext *avctx,
00044                             unsigned char *frame, int buf_size, void *data)
00045 {
00046     int ret = avpicture_layout((AVPicture *)data, avctx->pix_fmt, avctx->width,
00047                                                avctx->height, frame, buf_size);
00048 
00049     if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
00050        avctx->pix_fmt   == PIX_FMT_YUYV422) {
00051         int x;
00052         for(x = 1; x < avctx->height*avctx->width*2; x += 2)
00053             frame[x] ^= 0x80;
00054     }
00055     return ret;
00056 }
00057 
00058 AVCodec rawvideo_encoder = {
00059     "rawvideo",
00060     AVMEDIA_TYPE_VIDEO,
00061     CODEC_ID_RAWVIDEO,
00062     sizeof(AVFrame),
00063     raw_init_encoder,
00064     raw_encode,
00065     .long_name = NULL_IF_CONFIG_SMALL("raw video"),
00066 };

Generated on Fri Sep 16 2011 17:17:42 for FFmpeg by  doxygen 1.7.1