apps/codecs/lib/codeclib.h

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2005 Dave Chapman
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include "config.h"
  23 #include "codecs.h"
  24 #include "system.h"
  25 #include <sys/types.h>
  26
  27 extern struct codec_api *ci;
  28 extern size_t mem_ptr;
  29 extern size_t bufsize;
  30 extern unsigned char* mp3buf;     /* The actual MP3 buffer from Rockbox                 */
  31 extern unsigned char* mallocbuf;  /* The free space after the codec in the codec buffer */
  32 extern unsigned char* filebuf;    /* The rest of the MP3 buffer                         */
  33
  34 /* Standard library functions that are used by the codecs follow here */
  35
  36 /* Get these functions 'out of the way' of the standard functions. Not doing
  37  * so confuses the cygwin linker, and maybe others. These functions need to
  38  * be implemented elsewhere */
  39 #define malloc(x) codec_malloc(x)
  40 #define calloc(x,y) codec_calloc(x,y)
  41 #define realloc(x,y) codec_realloc(x,y)
  42 #define free(x) codec_free(x)
  43 #define alloca(x) __builtin_alloca(x)
  44
  45 void* codec_malloc(size_t size);
  46 void* codec_calloc(size_t nmemb, size_t size);
  47 void* codec_realloc(void* ptr, size_t size);
  48 void codec_free(void* ptr);
  49
  50 void *memcpy(void *dest, const void *src, size_t n);
  51 void *memset(void *s, int c, size_t n);
  52 int memcmp(const void *s1, const void *s2, size_t n);
  53 void *memmove(void *s1, const void *s2, size_t n);
  54
  55 size_t strlen(const char *s);
  56 char *strcpy(char *dest, const char *src);
  57 char *strcat(char *dest, const char *src);
  58 int strcmp(const char *, const char *);
  59
  60 void qsort(void *base, size_t nmemb, size_t size, int(*compar)(const void *, const void *));
  61
  62 #define abs(x) ((x)>0?(x):-(x))
  63 #define labs(x) abs(x)
  64
  65 /*MDCT library functions*/
  66
  67 extern void mdct_backward(int n, int32_t *in, int32_t *out);
  68
  69 #if defined(CPU_ARM) && (ARM_ARCH == 4)
  70 /* optimised unsigned integer division for ARMv4, in IRAM */
  71 unsigned udiv32_arm(unsigned a, unsigned b);
  72 #define UDIV32(a, b) udiv32_arm(a, b)
  73 #else
  74 /* default */
  75 #define UDIV32(a, b) (a / b)
  76 #endif
  77
  78 /* Various codec helper functions */
  79
  80 int codec_init(void);
  81 void codec_set_replaygain(struct mp3entry* id3);
  82
  83 #ifdef RB_PROFILE
  84 void __cyg_profile_func_enter(void *this_fn, void *call_site)
  85     NO_PROF_ATTR ICODE_ATTR;
  86 void __cyg_profile_func_exit(void *this_fn, void *call_site)
  87     NO_PROF_ATTR ICODE_ATTR;
  88 #endif