LCOV - code coverage report
Current view: top level - libavcodec - y41penc.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 30 33 90.9 %
Date: 2017-12-13 10:57:33 Functions: 3 3 100.0 %

          Line data    Source code
       1             : /*
       2             :  * y41p encoder
       3             :  *
       4             :  * Copyright (c) 2012 Paul B Mahol
       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           3 : static av_cold int y41p_encode_init(AVCodecContext *avctx)
      27             : {
      28           3 :     if (avctx->width & 7) {
      29           0 :         av_log(avctx, AV_LOG_ERROR, "y41p requires width to be divisible by 8.\n");
      30           0 :         return AVERROR_INVALIDDATA;
      31             :     }
      32             : 
      33           3 :     avctx->bits_per_coded_sample = 12;
      34           3 :     avctx->bit_rate = ff_guess_coded_bitrate(avctx);
      35             : 
      36           3 :     return 0;
      37             : }
      38             : 
      39         150 : static int y41p_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
      40             :                              const AVFrame *pic, int *got_packet)
      41             : {
      42             :     uint8_t *dst;
      43             :     uint8_t *y, *u, *v;
      44             :     int i, j, ret;
      45             : 
      46         150 :     if ((ret = ff_alloc_packet2(avctx, pkt, avctx->width * avctx->height * 1.5, 0)) < 0)
      47           0 :         return ret;
      48             : 
      49         150 :     dst = pkt->data;
      50             : 
      51       43350 :     for (i = avctx->height - 1; i >= 0; i--) {
      52       43200 :         y = &pic->data[0][i * pic->linesize[0]];
      53       43200 :         u = &pic->data[1][i * pic->linesize[1]];
      54       43200 :         v = &pic->data[2][i * pic->linesize[2]];
      55     1944000 :         for (j = 0; j < avctx->width; j += 8) {
      56     1900800 :             *(dst++) = *(u++);
      57     1900800 :             *(dst++) = *(y++);
      58     1900800 :             *(dst++) = *(v++);
      59     1900800 :             *(dst++) = *(y++);
      60             : 
      61     1900800 :             *(dst++) = *(u++);
      62     1900800 :             *(dst++) = *(y++);
      63     1900800 :             *(dst++) = *(v++);
      64     1900800 :             *(dst++) = *(y++);
      65             : 
      66     1900800 :             *(dst++) = *(y++);
      67     1900800 :             *(dst++) = *(y++);
      68     1900800 :             *(dst++) = *(y++);
      69     1900800 :             *(dst++) = *(y++);
      70             :         }
      71             :     }
      72             : 
      73         150 :     pkt->flags |= AV_PKT_FLAG_KEY;
      74         150 :     *got_packet = 1;
      75         150 :     return 0;
      76             : }
      77             : 
      78           3 : static av_cold int y41p_encode_close(AVCodecContext *avctx)
      79             : {
      80           3 :     return 0;
      81             : }
      82             : 
      83             : AVCodec ff_y41p_encoder = {
      84             :     .name         = "y41p",
      85             :     .long_name    = NULL_IF_CONFIG_SMALL("Uncompressed YUV 4:1:1 12-bit"),
      86             :     .type         = AVMEDIA_TYPE_VIDEO,
      87             :     .id           = AV_CODEC_ID_Y41P,
      88             :     .init         = y41p_encode_init,
      89             :     .encode2      = y41p_encode_frame,
      90             :     .close        = y41p_encode_close,
      91             :     .pix_fmts     = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV411P,
      92             :                                                  AV_PIX_FMT_NONE },
      93             :     .capabilities = AV_CODEC_CAP_INTRA_ONLY,
      94             : };

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