LCOV - code coverage report
Current view: top level - libavcodec - targa_y216dec.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 30 0.0 %
Date: 2017-12-17 16:07:53 Functions: 0 2 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Pinnacle TARGA CineWave YUV16 decoder
       3             :  * Copyright (c) 2012 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           0 : static av_cold int y216_decode_init(AVCodecContext *avctx)
      26             : {
      27           0 :     avctx->pix_fmt             = AV_PIX_FMT_YUV422P16;
      28           0 :     avctx->bits_per_raw_sample = 14;
      29             : 
      30           0 :     return 0;
      31             : }
      32             : 
      33           0 : static int y216_decode_frame(AVCodecContext *avctx, void *data,
      34             :                              int *got_frame, AVPacket *avpkt)
      35             : {
      36           0 :     AVFrame *pic = data;
      37           0 :     const uint16_t *src = (uint16_t *)avpkt->data;
      38             :     uint16_t *y, *u, *v;
      39           0 :     int aligned_width = FFALIGN(avctx->width, 4);
      40             :     int i, j, ret;
      41             : 
      42           0 :     if (avpkt->size < 4 * avctx->height * aligned_width) {
      43           0 :         av_log(avctx, AV_LOG_ERROR, "Insufficient input data.\n");
      44           0 :         return AVERROR(EINVAL);
      45             :     }
      46             : 
      47           0 :     if ((ret = ff_get_buffer(avctx, pic, 0)) < 0)
      48           0 :         return ret;
      49             : 
      50           0 :     pic->key_frame = 1;
      51           0 :     pic->pict_type = AV_PICTURE_TYPE_I;
      52             : 
      53           0 :     y = (uint16_t *)pic->data[0];
      54           0 :     u = (uint16_t *)pic->data[1];
      55           0 :     v = (uint16_t *)pic->data[2];
      56             : 
      57           0 :     for (i = 0; i < avctx->height; i++) {
      58           0 :         for (j = 0; j < avctx->width >> 1; j++) {
      59           0 :             u[    j    ] = src[4 * j    ] << 2 | src[4 * j    ] >> 14;
      60           0 :             y[2 * j    ] = src[4 * j + 1] << 2 | src[4 * j + 1] >> 14;
      61           0 :             v[    j    ] = src[4 * j + 2] << 2 | src[4 * j + 2] >> 14;
      62           0 :             y[2 * j + 1] = src[4 * j + 3] << 2 | src[4 * j + 3] >> 14;
      63             :         }
      64             : 
      65           0 :         y += pic->linesize[0] >> 1;
      66           0 :         u += pic->linesize[1] >> 1;
      67           0 :         v += pic->linesize[2] >> 1;
      68           0 :         src += aligned_width << 1;
      69             :     }
      70             : 
      71           0 :     *got_frame = 1;
      72             : 
      73           0 :     return avpkt->size;
      74             : }
      75             : 
      76             : AVCodec ff_targa_y216_decoder = {
      77             :     .name         = "targa_y216",
      78             :     .long_name    = NULL_IF_CONFIG_SMALL("Pinnacle TARGA CineWave YUV16"),
      79             :     .type         = AVMEDIA_TYPE_VIDEO,
      80             :     .id           = AV_CODEC_ID_TARGA_Y216,
      81             :     .init         = y216_decode_init,
      82             :     .decode       = y216_decode_frame,
      83             :     .capabilities = AV_CODEC_CAP_DR1,
      84             : };

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