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  1. /*
  2.  * v308 encoder
  3.  *
  4.  * Copyright (c) 2011 Carl Eugen Hoyos
  5.  *
  6.  * This file is part of FFmpeg.
  7.  *
  8.  * FFmpeg is free software; you can redistribute it and/or
  9.  * modify it under the terms of the GNU Lesser General Public
  10.  * License as published by the Free Software Foundation; either
  11.  * version 2.1 of the License, or (at your option) any later version.
  12.  *
  13.  * FFmpeg is distributed in the hope that it will be useful,
  14.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16.  * Lesser General Public License for more details.
  17.  *
  18.  * You should have received a copy of the GNU Lesser General Public
  19.  * License along with FFmpeg; if not, write to the Free Software
  20.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  21.  */
  22.  
  23. #include "libavutil/intreadwrite.h"
  24. #include "avcodec.h"
  25. #include "internal.h"
  26.  
  27. static av_cold int v308_encode_init(AVCodecContext *avctx)
  28. {
  29.     if (avctx->width & 1) {
  30.         av_log(avctx, AV_LOG_ERROR, "v308 requires width to be even.\n");
  31.         return AVERROR_INVALIDDATA;
  32.     }
  33.  
  34.     avctx->coded_frame = avcodec_alloc_frame();
  35.  
  36.     if (!avctx->coded_frame) {
  37.         av_log(avctx, AV_LOG_ERROR, "Could not allocate frame.\n");
  38.         return AVERROR(ENOMEM);
  39.     }
  40.  
  41.     return 0;
  42. }
  43.  
  44. static int v308_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
  45.                              const AVFrame *pic, int *got_packet)
  46. {
  47.     uint8_t *dst;
  48.     uint8_t *y, *u, *v;
  49.     int i, j, ret;
  50.  
  51.     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 3)) < 0)
  52.         return ret;
  53.     dst = pkt->data;
  54.  
  55.     avctx->coded_frame->key_frame = 1;
  56.     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
  57.  
  58.     y = pic->data[0];
  59.     u = pic->data[1];
  60.     v = pic->data[2];
  61.  
  62.     for (i = 0; i < avctx->height; i++) {
  63.         for (j = 0; j < avctx->width; j++) {
  64.             *dst++ = v[j];
  65.             *dst++ = y[j];
  66.             *dst++ = u[j];
  67.         }
  68.         y += pic->linesize[0];
  69.         u += pic->linesize[1];
  70.         v += pic->linesize[2];
  71.     }
  72.  
  73.     pkt->flags |= AV_PKT_FLAG_KEY;
  74.     *got_packet = 1;
  75.     return 0;
  76. }
  77.  
  78. static av_cold int v308_encode_close(AVCodecContext *avctx)
  79. {
  80.     av_freep(&avctx->coded_frame);
  81.  
  82.     return 0;
  83. }
  84.  
  85. AVCodec ff_v308_encoder = {
  86.     .name         = "v308",
  87.     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"),
  88.     .type         = AVMEDIA_TYPE_VIDEO,
  89.     .id           = AV_CODEC_ID_V308,
  90.     .init         = v308_encode_init,
  91.     .encode2      = v308_encode_frame,
  92.     .close        = v308_encode_close,
  93.     .pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P, AV_PIX_FMT_NONE },
  94. };
  95.