text: /*
   * Raw Video Encoder
   * Copyright (c) 2001 Fabrice Bellard
   *
   * This file is part of FFmpeg.
   *
   * FFmpeg is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * FFmpeg is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with FFmpeg; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
   */
  
  /**
   * @file
   * Raw Video Encoder
   */
  
  #include "avcodec.h"
  #include "raw.h"
  #include "internal.h"
  #include "libavutil/pixdesc.h"
  #include "libavutil/intreadwrite.h"
  #include "libavutil/imgutils.h"
  #include "libavutil/internal.h"
  
  static av_cold int raw_encode_init(AVCodecContext *avctx)
  {
      const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(avctx->pix_fmt);
  
  #if FF_API_CODED_FRAME
  FF_DISABLE_DEPRECATION_WARNINGS
      avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
  FF_ENABLE_DEPRECATION_WARNINGS
  #endif
      avctx->bits_per_coded_sample = av_get_bits_per_pixel(desc);
      if(!avctx->codec_tag)
          avctx->codec_tag = avcodec_pix_fmt_to_codec_tag(avctx->pix_fmt);
      avctx->bit_rate = ff_guess_coded_bitrate(avctx);
  
      return 0;
  }
  
  static int raw_encode(AVCodecContext *avctx, AVPacket *pkt,
                        const AVFrame *frame, int *got_packet)
  {
      int ret = av_image_get_buffer_size(frame->format,
                                         frame->width, frame->height, 1);
  
      if (ret < 0)
          return ret;
  
      if ((ret = ff_alloc_packet2(avctx, pkt, ret, ret)) < 0)
          return ret;
      if ((ret = av_image_copy_to_buffer(pkt->data, pkt->size,
                                         (const uint8_t **)frame->data, frame->linesize,
                                         frame->format,
                                         frame->width, frame->height, 1)) < 0)
          return ret;
  
      if(avctx->codec_tag == AV_RL32("yuv2") && ret > 0 &&
         frame->format   == AV_PIX_FMT_YUYV422) {
          int x;
          for(x = 1; x < frame->height*frame->width*2; x += 2)
              pkt->data[x] ^= 0x80;
      } else if (avctx->codec_tag == AV_RL32("b64a") && ret > 0 &&
          frame->format == AV_PIX_FMT_RGBA64BE) {
          uint64_t v;
          int x;
          for (x = 0; x < frame->height * frame->width; x++) {
              v = AV_RB64(&pkt->data[8 * x]);
              AV_WB64(&pkt->data[8 * x], v << 48 | v >> 16);
          }
      }
      pkt->flags |= AV_PKT_FLAG_KEY;
      *got_packet = 1;
      return 0;
  }
  
  AVCodec ff_rawvideo_encoder = {
      .name           = "rawvideo",
      .long_name      = NULL_IF_CONFIG_SMALL("raw video"),
      .type           = AVMEDIA_TYPE_VIDEO,
      .id             = AV_CODEC_ID_RAWVIDEO,
      .init           = raw_encode_init,
      .encode2        = raw_encode,
  };
  