LCOV - code coverage report
Current view: top level - libavcodec - sipr_parser.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 13 21 61.9 %
Date: 2017-12-11 04:34:20 Functions: 2 2 100.0 %

          Line data    Source code
       1             : /*
       2             :  * This file is part of FFmpeg.
       3             :  *
       4             :  * FFmpeg is free software; you can redistribute it and/or
       5             :  * modify it under the terms of the GNU Lesser General Public
       6             :  * License as published by the Free Software Foundation; either
       7             :  * version 2.1 of the License, or (at your option) any later version.
       8             :  *
       9             :  * FFmpeg is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             :  * Lesser General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU Lesser General Public
      15             :  * License along with FFmpeg; if not, write to the Free Software
      16             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      17             :  */
      18             : 
      19             : /**
      20             :  * @file
      21             :  * Sipr audio parser
      22             :  */
      23             : 
      24             : #include "parser.h"
      25             : 
      26             : typedef struct SiprParserContext{
      27             :     ParseContext pc;
      28             : } SiprParserContext;
      29             : 
      30        6421 : static int sipr_split(AVCodecContext *avctx, const uint8_t *buf, int buf_size)
      31             : {
      32             :     int next;
      33             : 
      34        6421 :     switch (avctx->block_align) {
      35        6421 :     case 20:
      36             :     case 19:
      37             :     case 29:
      38        6421 :     case 37: next = avctx->block_align; break;
      39           0 :     default:
      40           0 :         if      (avctx->bit_rate > 12200) next = 20;
      41           0 :         else if (avctx->bit_rate > 7500 ) next = 19;
      42           0 :         else if (avctx->bit_rate > 5750 ) next = 29;
      43           0 :         else                              next = 37;
      44             :     }
      45             : 
      46        6421 :     return FFMIN(next, buf_size);
      47             : }
      48             : 
      49        6421 : static int sipr_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
      50             :                       const uint8_t **poutbuf, int *poutbuf_size,
      51             :                       const uint8_t *buf, int buf_size)
      52             : {
      53        6421 :     SiprParserContext *s = s1->priv_data;
      54        6421 :     ParseContext *pc = &s->pc;
      55             :     int next;
      56             : 
      57        6421 :     next = sipr_split(avctx, buf, buf_size);
      58        6421 :     if (ff_combine_frame(pc, next, &buf, &buf_size) < 0) {
      59           0 :         *poutbuf = NULL;
      60           0 :         *poutbuf_size = 0;
      61           0 :         return buf_size;
      62             :     }
      63             : 
      64        6421 :     *poutbuf      = buf;
      65        6421 :     *poutbuf_size = buf_size;
      66        6421 :     return next;
      67             : }
      68             : 
      69             : AVCodecParser ff_sipr_parser = {
      70             :     .codec_ids      = { AV_CODEC_ID_SIPR },
      71             :     .priv_data_size = sizeof(SiprParserContext),
      72             :     .parser_parse   = sipr_parse,
      73             :     .parser_close   = ff_parse_close,
      74             : };

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