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Bump shm test

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This commit is contained in:
cnlohr 2018-05-07 23:32:50 -04:00
parent c158ca0b5b
commit 1908c75cf8
2 changed files with 82 additions and 4 deletions
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37
colorchord2/DisplaySHM.c
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@ -14,13 +14,16 @@
#include <fcntl.h> /* For O_* constants */
#include <unistd.h>
extern struct NoteFinder * nf;
struct SHMDriver
{
int lights_file;
//int dft_file; //Not available.
//uint8_t * dft_ptr;
int dft_file; //Not available.
uint8_t * dft_ptr;
uint8_t * lights_ptr;
//int total_dft;
int total_dft;
int total_leds;
};
@ -29,7 +32,6 @@ static void SHMUpdate(void * id, struct NoteFinder*nf)
{
struct SHMDriver * d = (struct SHMDriver*)id;
if( !d->lights_file )
{
const char * shm_lights = GetParameterS( "shm_lights", 0 );
@ -46,6 +48,33 @@ static void SHMUpdate(void * id, struct NoteFinder*nf)
}
if( !d->dft_file )
{
const char * shmname = GetParameterS( "shm_dft", 0 );
//const char * shm_dft = GetParameterS( "shm_dft", 0 ); // Not available.
if( shmname )
{
d->dft_file = shm_open(shmname, O_CREAT | O_RDWR, 0644);
ftruncate( d->dft_file, 16384 );
d->dft_ptr = mmap(0,16384, PROT_READ | PROT_WRITE, MAP_SHARED, d->dft_file, 0);
}
printf( "Got SHM: %s->%d [%p]\n", shmname, d->dft_file, d->dft_ptr );
}
if( d->dft_ptr )
{
d->total_dft = nf->octaves * nf->freqbins;
memcpy( d->dft_ptr+0, &nf->octaves, 4 );
memcpy( d->dft_ptr+4, &nf->freqbins, 4 );
memcpy( d->dft_ptr+8, nf->folded_bins, nf->freqbins * sizeof(float) );
memcpy( d->dft_ptr+8+nf->freqbins * sizeof(float),
nf->outbins, d->total_dft * sizeof(float) );
}
if( d->lights_ptr )
{
memcpy( d->lights_ptr, &d->total_leds, 4 );