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  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 "internal.h"
  30. #include "libavutil/pixdesc.h"
  31. #include "libavutil/intreadwrite.h"
  32. #include "libavutil/internal.h"
  33.  
  34. static av_cold int raw_encode_init(AVCodecContext *avctx)
  35. {
  36.     const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
  37.  
  38. #if FF_API_CODED_FRAME
  39. FF_DISABLE_DEPRECATION_WARNINGS
  40.     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
  41. FF_ENABLE_DEPRECATION_WARNINGS
  42. #endif
  43.     avctx->bits_per_coded_sample = av_get_bits_per_pixel(desc);
  44.     if(!avctx->codec_tag)
  45.         avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
  46.     return 0;
  47. }
  48.  
  49. static int raw_encode(AVCodecContext *avctx, AVPacket *pkt,
  50.                       const AVFrame *frame, int *got_packet)
  51. {
  52.     int ret = avpicture_get_size(frame->format, frame->width, frame->height);
  53.  
  54.     if (ret < 0)
  55.         return ret;
  56.  
  57.     if ((ret = ff_alloc_packet2(avctx, pkt, ret, ret)) < 0)
  58.         return ret;
  59.     if ((ret = avpicture_layout((const AVPicture *)frame, frame->format, frame->width,
  60.                                 frame->height, pkt->data, pkt->size)) < 0)
  61.         return ret;
  62.  
  63.     if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
  64.        frame->format   == AV_PIX_FMT_YUYV422) {
  65.         int x;
  66.         for(x = 1; x < frame->height*frame->width*2; x += 2)
  67.             pkt->data[x] ^= 0x80;
  68.     }
  69.     pkt->flags |= AV_PKT_FLAG_KEY;
  70.     *got_packet = 1;
  71.     return 0;
  72. }
  73.  
  74. AVCodec ff_rawvideo_encoder = {
  75.     .name           = "rawvideo",
  76.     .long_name      = NULL_IF_CONFIG_SMALL("raw video"),
  77.     .type           = AVMEDIA_TYPE_VIDEO,
  78.     .id             = AV_CODEC_ID_RAWVIDEO,
  79.     .init           = raw_encode_init,
  80.     .encode2        = raw_encode,
  81. };
  82.