apps/codecs/libtremor/oggmalloc.c

   1 #include "os_types.h"
   2 #include "../lib/tlsf/src/tlsf.h"
   3
   4 #if defined(CPU_ARM) || defined(CPU_COLDFIRE) || defined(CPU_MIPS)
   5 #include <setjmp.h>
   6 extern jmp_buf rb_jump_buf;
   7 #define LONGJMP(x)  longjmp(rb_jump_buf, x)
   8 #elif defined(SIMULATOR)
   9 #define LONGJMP(x)  do { DEBUGF("Vorbis: allocation failed!\n"); return NULL; } while (false)
  10 #else
  11 #define LONGJMP(x)  return NULL
  12 #endif
  13
  14 void ogg_malloc_init(void)
  15 {
  16     size_t bufsize;
  17     void* buf = ci->codec_get_buffer(&bufsize);
  18     init_memory_pool(bufsize, buf);
  19 }
  20
  21 void ogg_malloc_destroy()
  22 {
  23     size_t bufsize;
  24     void* buf = ci->codec_get_buffer(&bufsize);
  25     destroy_memory_pool(buf);
  26 }
  27
  28 void *ogg_malloc(size_t size)
  29 {
  30     void* x = tlsf_malloc(size);
  31
  32     if (x == NULL)
  33         LONGJMP(1);
  34
  35     return x;
  36 }
  37
  38 void *ogg_calloc(size_t nmemb, size_t size)
  39 {
  40     void *x = tlsf_calloc(nmemb, size);
  41
  42     if (x == NULL)
  43         LONGJMP(1);
  44
  45     return x;
  46 }
  47
  48 void *ogg_realloc(void *ptr, size_t size)
  49 {
  50     void *x = tlsf_realloc(ptr, size);
  51
  52     if (x == NULL)
  53         LONGJMP(1);
  54
  55     return x;
  56 }
  57
  58 void ogg_free(void* ptr)
  59 {
  60     tlsf_free(ptr);
  61 }
  62
  63 /* Allocate IRAM buffer */
  64 static unsigned char iram_buff[IRAM_IBSS_SIZE] IBSS_ATTR __attribute__ ((aligned (16)));
  65 static size_t iram_remain;
  66
  67 void iram_malloc_init(void){
  68     iram_remain=IRAM_IBSS_SIZE;
  69 }
  70
  71 void *iram_malloc(size_t size){
  72     void* x;
  73
  74     /* always ensure 16-byte aligned */
  75     if(size&0x0f)
  76       size=(size-(size&0x0f))+16;
  77
  78     if(size>iram_remain)
  79       return NULL;
  80
  81     x = &iram_buff[IRAM_IBSS_SIZE-iram_remain];
  82     iram_remain-=size;
  83
  84     return x;
  85 }