LCOV - code coverage report
Current view: top level - libavcodec - yuv4enc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 24 25 96.0 %
Date: 2017-12-16 13:57:32 Functions: 3 3 100.0 %

          Line data    Source code
       1             : /*
       2             :  * libquicktime yuv4 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 "avcodec.h"
      24             : #include "internal.h"
      25             : 
      26           4 : static av_cold int yuv4_encode_init(AVCodecContext *avctx)
      27             : {
      28           4 :     return 0;
      29             : }
      30             : 
      31         200 : static int yuv4_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
      32             :                              const AVFrame *pic, int *got_packet)
      33             : {
      34             :     uint8_t *dst;
      35             :     uint8_t *y, *u, *v;
      36             :     int i, j, ret;
      37             : 
      38         200 :     if ((ret = ff_alloc_packet2(avctx, pkt, 6 * (avctx->width + 1 >> 1) * (avctx->height + 1 >> 1), 0)) < 0)
      39           0 :         return ret;
      40         200 :     dst = pkt->data;
      41             : 
      42         200 :     y = pic->data[0];
      43         200 :     u = pic->data[1];
      44         200 :     v = pic->data[2];
      45             : 
      46       22650 :     for (i = 0; i < avctx->height + 1 >> 1; i++) {
      47     3838500 :         for (j = 0; j < avctx->width + 1 >> 1; j++) {
      48     3816050 :             *dst++ = u[j] ^ 0x80;
      49     3816050 :             *dst++ = v[j] ^ 0x80;
      50     3816050 :             *dst++ = y[                   2 * j    ];
      51     3816050 :             *dst++ = y[                   2 * j + 1];
      52     3816050 :             *dst++ = y[pic->linesize[0] + 2 * j    ];
      53     3816050 :             *dst++ = y[pic->linesize[0] + 2 * j + 1];
      54             :         }
      55       22450 :         y += 2 * pic->linesize[0];
      56       22450 :         u +=     pic->linesize[1];
      57       22450 :         v +=     pic->linesize[2];
      58             :     }
      59             : 
      60         200 :     pkt->flags |= AV_PKT_FLAG_KEY;
      61         200 :     *got_packet = 1;
      62         200 :     return 0;
      63             : }
      64             : 
      65           4 : static av_cold int yuv4_encode_close(AVCodecContext *avctx)
      66             : {
      67           4 :     return 0;
      68             : }
      69             : 
      70             : AVCodec ff_yuv4_encoder = {
      71             :     .name         = "yuv4",
      72             :     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:2:0"),
      73             :     .type         = AVMEDIA_TYPE_VIDEO,
      74             :     .id           = AV_CODEC_ID_YUV4,
      75             :     .init         = yuv4_encode_init,
      76             :     .encode2      = yuv4_encode_frame,
      77             :     .close        = yuv4_encode_close,
      78             :     .pix_fmts     = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
      79             :     .capabilities = AV_CODEC_CAP_INTRA_ONLY,
      80             : };

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