LCOV - code coverage report
Current view: top level - libavcodec - g729_parser.c (source / functions) Hit Total Coverage
Test: coverage.info Lines: 0 21 0.0 %
Date: 2017-12-15 18:13:28 Functions: 0 1 0.0 %

          Line data    Source code
       1             : /*
       2             :  * Copyright (c) 2015  Ganesh Ajjanagadde
       3             :  *
       4             :  * This file is part of FFmpeg.
       5             :  *
       6             :  * FFmpeg is free software; you can redistribute it and/or
       7             :  * modify it under the terms of the GNU Lesser General Public
       8             :  * License as published by the Free Software Foundation; either
       9             :  * version 2.1 of the License, or (at your option) any later version.
      10             :  *
      11             :  * FFmpeg is distributed in the hope that it will be useful,
      12             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      14             :  * Lesser General Public License for more details.
      15             :  *
      16             :  * You should have received a copy of the GNU Lesser General Public
      17             :  * License along with FFmpeg; if not, write to the Free Software
      18             :  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
      19             :  */
      20             : 
      21             : /**
      22             :  * @file
      23             :  * G.729 audio parser
      24             :  *
      25             :  * Splits packets into individual blocks.
      26             :  */
      27             : 
      28             : #include "libavutil/avassert.h"
      29             : #include "parser.h"
      30             : #include "g729.h"
      31             : 
      32             : typedef struct G729ParseContext {
      33             :     ParseContext pc;
      34             :     int block_size;
      35             :     int duration;
      36             :     int remaining;
      37             : } G729ParseContext;
      38             : 
      39           0 : static int g729_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
      40             :                      const uint8_t **poutbuf, int *poutbuf_size,
      41             :                      const uint8_t *buf, int buf_size)
      42             : {
      43           0 :     G729ParseContext *s = s1->priv_data;
      44           0 :     ParseContext *pc = &s->pc;
      45             :     int next;
      46             : 
      47           0 :     if (!s->block_size) {
      48             :         av_assert1(avctx->codec_id == AV_CODEC_ID_G729);
      49             :         /* FIXME: replace this heuristic block_size with more precise estimate */
      50           0 :         s->block_size = (avctx->bit_rate < 8000) ? G729D_6K4_BLOCK_SIZE : G729_8K_BLOCK_SIZE;
      51           0 :         s->duration   = avctx->frame_size;
      52             :     }
      53             : 
      54           0 :     if (!s->remaining)
      55           0 :         s->remaining = s->block_size;
      56           0 :     if (s->remaining <= buf_size) {
      57           0 :         next = s->remaining;
      58           0 :         s->remaining = 0;
      59             :     } else {
      60           0 :         next = END_NOT_FOUND;
      61           0 :         s->remaining -= buf_size;
      62             :     }
      63             : 
      64           0 :     if (ff_combine_frame(pc, next, &buf, &buf_size) < 0 || !buf_size) {
      65           0 :         *poutbuf      = NULL;
      66           0 :         *poutbuf_size = 0;
      67           0 :         return buf_size;
      68             :     }
      69             : 
      70           0 :     s1->duration = s->duration;
      71             : 
      72           0 :     *poutbuf      = buf;
      73           0 :     *poutbuf_size = buf_size;
      74           0 :     return next;
      75             : }
      76             : 
      77             : AVCodecParser ff_g729_parser = {
      78             :     .codec_ids      = { AV_CODEC_ID_G729 },
      79             :     .priv_data_size = sizeof(G729ParseContext),
      80             :     .parser_parse   = g729_parse,
      81             :     .parser_close   = ff_parse_close,
      82             : };

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