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authorYordan Makariev <ym9412@gmail.com>2012-01-11 21:27:20 +0200
committerDiego Biurrun <diego@biurrun.de>2012-02-10 15:48:50 +0100
commit0c5d78a89806dc96244a3bd17b47e1d99f0a931a (patch)
tree7bcec99f8120b87ad5d71570ec2200d356fbd830 /libavdevice/timefilter.c
parentba83ac4c272eb194ba113956dc89d967bdecf8c6 (diff)
4xm, timefilter: K&R formatting cosmetics
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Diffstat (limited to 'libavdevice/timefilter.c')
-rw-r--r--libavdevice/timefilter.c94
1 files changed, 48 insertions, 46 deletions
diff --git a/libavdevice/timefilter.c b/libavdevice/timefilter.c
index 136661a541..cf9d2c623b 100644
--- a/libavdevice/timefilter.c
+++ b/libavdevice/timefilter.c
@@ -22,10 +22,9 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-
+#include "libavutil/mem.h"
#include "config.h"
#include "timefilter.h"
-#include "libavutil/mem.h"
struct TimeFilter {
/// Delay Locked Loop data. These variables refer to mathematical
@@ -37,12 +36,14 @@ struct TimeFilter {
int count;
};
-TimeFilter * ff_timefilter_new(double clock_period, double feedback2_factor, double feedback3_factor)
+TimeFilter *ff_timefilter_new(double clock_period,
+ double feedback2_factor,
+ double feedback3_factor)
{
- TimeFilter *self = av_mallocz(sizeof(TimeFilter));
- self->clock_period = clock_period;
- self->feedback2_factor = feedback2_factor;
- self->feedback3_factor = feedback3_factor;
+ TimeFilter *self = av_mallocz(sizeof(TimeFilter));
+ self->clock_period = clock_period;
+ self->feedback2_factor = feedback2_factor;
+ self->feedback3_factor = feedback3_factor;
return self;
}
@@ -53,20 +54,20 @@ void ff_timefilter_destroy(TimeFilter *self)
void ff_timefilter_reset(TimeFilter *self)
{
- self->count = 0;
+ self->count = 0;
}
double ff_timefilter_update(TimeFilter *self, double system_time, double period)
{
self->count++;
- if (self->count==1) {
+ if (self->count == 1) {
/// init loop
- self->cycle_time = system_time;
+ self->cycle_time = system_time;
} else {
double loop_error;
- self->cycle_time += self->clock_period * period;
+ self->cycle_time += self->clock_period * period;
/// calculate loop error
- loop_error = system_time - self->cycle_time;
+ loop_error = system_time - self->cycle_time;
/// update loop
self->cycle_time += FFMAX(self->feedback2_factor, 1.0 / self->count) * loop_error;
@@ -84,60 +85,61 @@ double ff_timefilter_update(TimeFilter *self, double system_time, double period)
int main(void)
{
AVLFG prng;
- double n0,n1;
+ double n0, n1;
#define SAMPLES 1000
double ideal[SAMPLES];
double samples[SAMPLES];
#if 1
- for(n0= 0; n0<40; n0=2*n0+1){
- for(n1= 0; n1<10; n1=2*n1+1){
+ for (n0 = 0; n0 < 40; n0 = 2 * n0 + 1) {
+ for (n1 = 0; n1 < 10; n1 = 2 * n1 + 1) {
#else
- {{
- n0=7;
- n1=1;
+ {
+ {
+ n0 = 7;
+ n1 = 1;
#endif
- double best_error= 1000000000;
- double bestpar0=1;
- double bestpar1=0.001;
+ double best_error = 1000000000;
+ double bestpar0 = 1;
+ double bestpar1 = 0.001;
int better, i;
av_lfg_init(&prng, 123);
- for(i=0; i<SAMPLES; i++){
- ideal[i] = 10 + i + n1*i/(1000);
- samples[i] = ideal[i] + n0 * (av_lfg_get(&prng) - LFG_MAX / 2)
- / (LFG_MAX * 10LL);
+ for (i = 0; i < SAMPLES; i++) {
+ ideal[i] = 10 + i + n1 * i / (1000);
+ samples[i] = ideal[i] + n0 * (av_lfg_get(&prng) - LFG_MAX / 2) / (LFG_MAX * 10LL);
}
- do{
+ do {
double par0, par1;
- better=0;
- for(par0= bestpar0*0.8; par0<=bestpar0*1.21; par0+=bestpar0*0.05){
- for(par1= bestpar1*0.8; par1<=bestpar1*1.21; par1+=bestpar1*0.05){
- double error=0;
- TimeFilter *tf= ff_timefilter_new(1, par0, par1);
- for(i=0; i<SAMPLES; i++){
+ better = 0;
+ for (par0 = bestpar0 * 0.8; par0 <= bestpar0 * 1.21; par0 += bestpar0 * 0.05) {
+ for (par1 = bestpar1 * 0.8; par1 <= bestpar1 * 1.21; par1 += bestpar1 * 0.05) {
+ double error = 0;
+ TimeFilter *tf = ff_timefilter_new(1, par0, par1);
+ for (i = 0; i < SAMPLES; i++) {
double filtered;
- filtered= ff_timefilter_update(tf, samples[i], 1);
- error += (filtered - ideal[i]) * (filtered - ideal[i]);
+ filtered = ff_timefilter_update(tf, samples[i], 1);
+ error += (filtered - ideal[i]) * (filtered - ideal[i]);
}
ff_timefilter_destroy(tf);
- if(error < best_error){
- best_error= error;
- bestpar0= par0;
- bestpar1= par1;
- better=1;
+ if (error < best_error) {
+ best_error = error;
+ bestpar0 = par0;
+ bestpar1 = par1;
+ better = 1;
}
}
}
- }while(better);
+ } while (better);
#if 0
- double lastfil=9;
- TimeFilter *tf= ff_timefilter_new(1, bestpar0, bestpar1);
- for(i=0; i<SAMPLES; i++){
+ double lastfil = 9;
+ TimeFilter *tf = ff_timefilter_new(1, bestpar0, bestpar1);
+ for (i = 0; i < SAMPLES; i++) {
double filtered;
- filtered= ff_timefilter_update(tf, samples[i], 1);
- printf("%f %f %f %f\n", i - samples[i] + 10, filtered - samples[i], samples[FFMAX(i, 1)] - samples[FFMAX(i-1, 0)], filtered - lastfil);
- lastfil= filtered;
+ filtered = ff_timefilter_update(tf, samples[i], 1);
+ printf("%f %f %f %f\n", i - samples[i] + 10, filtered - samples[i],
+ samples[FFMAX(i, 1)] - samples[FFMAX(i - 1, 0)], filtered - lastfil);
+ lastfil = filtered;
}
ff_timefilter_destroy(tf);
#else