MP3 Player without external hardware MP3 Player without external hardware. A software based MP3 player based on a modified version of libmad. Mono output (at the moment) via AnalogOut. Files are read from an USB drive. This is a demo program, it plays only one file at the moment. Documentation is in "main.cpp" and "config.h"
Diff: lpc1768_mem.cpp
- Revision:
- 2:f28cf0afd021
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/lpc1768_mem.cpp Sat Nov 27 17:27:33 2010 +0000 @@ -0,0 +1,25 @@ +#include "mbed.h" +#include "config.h" + +static char *free_ptr = (char *)AHBMEM; +static int free_sz = AHBMEMSIZE; +void reset_ahb_mem(void) + { + free_ptr = (char *)AHBMEM; + free_sz = AHBMEMSIZE; + } +void *mad_malloc(unsigned int sz) +{ + unsigned int nsz = ((sz >> 3) + 1) << 3; // align to 8 byte + if(nsz < free_sz) + { + char *p = free_ptr; + free_ptr += nsz; + free_sz -=nsz; + return(p); + } + else + { + return(malloc(sz)); + } +}