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  1. /*
  2.  * v410 encoder
  3.  *
  4.  * Copyright (c) 2011 Derek Buitenhuis
  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/common.h"
  24. #include "libavutil/intreadwrite.h"
  25. #include "avcodec.h"
  26. #include "internal.h"
  27.  
  28. static av_cold int v410_encode_init(AVCodecContext *avctx)
  29. {
  30.     if (avctx->width & 1) {
  31.         av_log(avctx, AV_LOG_ERROR, "v410 requires width to be even.\n");
  32.         return AVERROR_INVALIDDATA;
  33.     }
  34.  
  35.     return 0;
  36. }
  37.  
  38. static int v410_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
  39.                              const AVFrame *pic, int *got_packet)
  40. {
  41.     uint8_t *dst;
  42.     uint16_t *y, *u, *v;
  43.     uint32_t val;
  44.     int i, j, ret;
  45.  
  46.     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 4,
  47.                                             avctx->width * avctx->height * 4)) < 0)
  48.         return ret;
  49.     dst = pkt->data;
  50.  
  51. #if FF_API_CODED_FRAME
  52. FF_DISABLE_DEPRECATION_WARNINGS
  53.     avctx->coded_frame->key_frame = 1;
  54.     avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;
  55. FF_ENABLE_DEPRECATION_WARNINGS
  56. #endif
  57.  
  58.     y = (uint16_t *)pic->data[0];
  59.     u = (uint16_t *)pic->data[1];
  60.     v = (uint16_t *)pic->data[2];
  61.  
  62.     for (i = 0; i < avctx->height; i++) {
  63.         for (j = 0; j < avctx->width; j++) {
  64.             val  = u[j] << 2;
  65.             val |= y[j] << 12;
  66.             val |= (uint32_t) v[j] << 22;
  67.             AV_WL32(dst, val);
  68.             dst += 4;
  69.         }
  70.         y += pic->linesize[0] >> 1;
  71.         u += pic->linesize[1] >> 1;
  72.         v += pic->linesize[2] >> 1;
  73.     }
  74.  
  75.     pkt->flags |= AV_PKT_FLAG_KEY;
  76.     *got_packet = 1;
  77.     return 0;
  78. }
  79.  
  80. AVCodec ff_v410_encoder = {
  81.     .name         = "v410",
  82.     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed 4:4:4 10-bit"),
  83.     .type         = AVMEDIA_TYPE_VIDEO,
  84.     .id           = AV_CODEC_ID_V410,
  85.     .init         = v410_encode_init,
  86.     .encode2      = v410_encode_frame,
  87.     .pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV444P10, AV_PIX_FMT_NONE },
  88. };
  89.