LCOV - code coverage report
Current view: top level - pulsecore - memchunk.c (source / functions) Hit Total Coverage
Test: lcov.out Lines: 29 44 65.9 %
Date: 2012-07-17 Functions: 3 5 60.0 %
Legend: Lines: hit not hit | Branches: + taken - not taken # not executed Branches: 7 30 23.3 %

           Branch data     Line data    Source code
       1                 :            : /***
       2                 :            :   This file is part of PulseAudio.
       3                 :            : 
       4                 :            :   Copyright 2004-2006 Lennart Poettering
       5                 :            : 
       6                 :            :   PulseAudio is free software; you can redistribute it and/or modify
       7                 :            :   it under the terms of the GNU Lesser General Public License as
       8                 :            :   published by the Free Software Foundation; either version 2.1 of the
       9                 :            :   License, or (at your option) any later version.
      10                 :            : 
      11                 :            :   PulseAudio is distributed in the hope that it will be useful, but
      12                 :            :   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 PulseAudio; if not, write to the Free Software
      18                 :            :   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
      19                 :            :   USA.
      20                 :            : ***/
      21                 :            : 
      22                 :            : #ifdef HAVE_CONFIG_H
      23                 :            : #include <config.h>
      24                 :            : #endif
      25                 :            : 
      26                 :            : #include <stdio.h>
      27                 :            : #include <stdlib.h>
      28                 :            : #include <string.h>
      29                 :            : #include <errno.h>
      30                 :            : 
      31                 :            : #include <pulsecore/macro.h>
      32                 :            : #include <pulsecore/core-util.h>
      33                 :            : 
      34                 :            : #include "memchunk.h"
      35                 :            : 
      36                 :         13 : pa_memchunk* pa_memchunk_make_writable(pa_memchunk *c, size_t min) {
      37                 :            :     pa_memblock *n;
      38                 :            :     size_t l;
      39                 :            :     void *tdata, *sdata;
      40                 :            : 
      41         [ -  + ]:         13 :     pa_assert(c);
      42         [ -  + ]:         13 :     pa_assert(c->memblock);
      43                 :            : 
      44   [ -  +  #  # ]:         13 :     if (pa_memblock_ref_is_one(c->memblock) &&
      45         [ #  # ]:          0 :         !pa_memblock_is_read_only(c->memblock) &&
      46                 :          0 :         pa_memblock_get_length(c->memblock) >= c->index+min)
      47                 :            :         return c;
      48                 :            : 
      49                 :         13 :     l = PA_MAX(c->length, min);
      50                 :            : 
      51                 :         13 :     n = pa_memblock_new(pa_memblock_get_pool(c->memblock), l);
      52                 :            : 
      53                 :         13 :     sdata = pa_memblock_acquire(c->memblock);
      54                 :         13 :     tdata = pa_memblock_acquire(n);
      55                 :            : 
      56                 :         13 :     memcpy(tdata, (uint8_t*) sdata + c->index, c->length);
      57                 :            : 
      58                 :         13 :     pa_memblock_release(c->memblock);
      59                 :         13 :     pa_memblock_release(n);
      60                 :            : 
      61                 :         13 :     pa_memblock_unref(c->memblock);
      62                 :            : 
      63                 :         13 :     c->memblock = n;
      64                 :         13 :     c->index = 0;
      65                 :            : 
      66                 :         13 :     return c;
      67                 :            : }
      68                 :            : 
      69                 :        318 : pa_memchunk* pa_memchunk_reset(pa_memchunk *c) {
      70         [ -  + ]:        318 :     pa_assert(c);
      71                 :            : 
      72                 :            :     memset(c, 0, sizeof(*c));
      73                 :            : 
      74                 :        318 :     return c;
      75                 :            : }
      76                 :            : 
      77                 :          0 : pa_memchunk *pa_memchunk_will_need(const pa_memchunk *c) {
      78                 :            :     void *p;
      79                 :            : 
      80         [ #  # ]:          0 :     pa_assert(c);
      81         [ #  # ]:          0 :     pa_assert(c->memblock);
      82                 :            : 
      83                 :            :     /* A version of pa_memblock_will_need() that works on memchunks
      84                 :            :      * instead of memblocks */
      85                 :            : 
      86                 :          0 :     p = (uint8_t*) pa_memblock_acquire(c->memblock) + c->index;
      87                 :          0 :     pa_will_need(p, c->length);
      88                 :          0 :     pa_memblock_release(c->memblock);
      89                 :            : 
      90                 :          0 :     return (pa_memchunk*) c;
      91                 :            : }
      92                 :            : 
      93                 :         62 : pa_memchunk* pa_memchunk_memcpy(pa_memchunk *dst, pa_memchunk *src) {
      94                 :            :     void *p, *q;
      95                 :            : 
      96         [ -  + ]:         62 :     pa_assert(dst);
      97         [ -  + ]:         62 :     pa_assert(src);
      98         [ -  + ]:         62 :     pa_assert(dst->length == src->length);
      99                 :            : 
     100                 :         62 :     p = pa_memblock_acquire(dst->memblock);
     101                 :         62 :     q = pa_memblock_acquire(src->memblock);
     102                 :            : 
     103                 :        124 :     memmove((uint8_t*) p + dst->index,
     104                 :         62 :             (uint8_t*) q + src->index,
     105                 :            :             dst->length);
     106                 :            : 
     107                 :         62 :     pa_memblock_release(dst->memblock);
     108                 :         62 :     pa_memblock_release(src->memblock);
     109                 :            : 
     110                 :         62 :     return dst;
     111                 :            : }
     112                 :            : 
     113                 :          0 : pa_bool_t pa_memchunk_isset(pa_memchunk *chunk) {
     114         [ #  # ]:          0 :     assert(chunk);
     115                 :            : 
     116                 :          0 :     return
     117         [ #  # ]:          0 :         chunk->memblock ||
     118 [ #  # ][ #  # ]:          0 :         chunk->index > 0 ||
     119                 :          0 :         chunk->length > 0;
     120                 :            : }

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