LCOV - code coverage report
Current view: top level - libavcodec - v308dec.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 24 28 85.7 %
Date: 2017-12-11 04:34:20 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /*
       2             :  * v308 decoder
       3             :  * Copyright (c) 2011 Carl Eugen Hoyos
       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             : #include "avcodec.h"
      23             : #include "internal.h"
      24             : 
      25           8 : static av_cold int v308_decode_init(AVCodecContext *avctx)
      26             : {
      27           8 :     avctx->pix_fmt = AV_PIX_FMT_YUV444P;
      28             : 
      29           8 :     if (avctx->width & 1)
      30           0 :         av_log(avctx, AV_LOG_WARNING, "v308 requires width to be even.\n");
      31             : 
      32           8 :     return 0;
      33             : }
      34             : 
      35         200 : static int v308_decode_frame(AVCodecContext *avctx, void *data,
      36             :                              int *got_frame, AVPacket *avpkt)
      37             : {
      38         200 :     AVFrame *pic = data;
      39         200 :     const uint8_t *src = avpkt->data;
      40             :     uint8_t *y, *u, *v;
      41             :     int i, j, ret;
      42             : 
      43         200 :     if (avpkt->size < 3 * avctx->height * avctx->width) {
      44           0 :         av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
      45           0 :         return AVERROR(EINVAL);
      46             :     }
      47             : 
      48         200 :     if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
      49           0 :         return ret;
      50             : 
      51         200 :     pic->key_frame = 1;
      52         200 :     pic->pict_type = AV_PICTURE_TYPE_I;
      53             : 
      54         200 :     y = pic->data[0];
      55         200 :     u = pic->data[1];
      56         200 :     v = pic->data[2];
      57             : 
      58       45100 :     for (i = 0; i < avctx->height; i++) {
      59    15309100 :         for (j = 0; j < avctx->width; j++) {
      60    15264200 :             v[j] = *src++;
      61    15264200 :             y[j] = *src++;
      62    15264200 :             u[j] = *src++;
      63             :         }
      64             : 
      65       44900 :         y += pic->linesize[0];
      66       44900 :         u += pic->linesize[1];
      67       44900 :         v += pic->linesize[2];
      68             :     }
      69             : 
      70         200 :     *got_frame = 1;
      71             : 
      72         200 :     return avpkt->size;
      73             : }
      74             : 
      75             : AVCodec ff_v308_decoder = {
      76             :     .name         = "v308",
      77             :     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed packed 4:4:4"),
      78             :     .type         = AVMEDIA_TYPE_VIDEO,
      79             :     .id           = AV_CODEC_ID_V308,
      80             :     .init         = v308_decode_init,
      81             :     .decode       = v308_decode_frame,
      82             :     .capabilities = AV_CODEC_CAP_DR1,
      83             : };

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