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correced memory deallocation bug and erors in comments 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@3308 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
anders 2001-12-04 12:20:17 +00:00
parent e49ab7e5bf
commit 68ac817cb7
1 changed files with 25 additions and 12 deletions
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37
libao2/pl_delay.c
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@ -1,8 +1,8 @@
/* This is a null audio out plugin it doesnt't really do anything
useful but serves an example of how audio plugins work. It delays
the output signal by the nuber of samples set by aop_delay n
where n is the number of bytes.
*/
/* Audio out plugin it doesnt't really do anything useful but serves
an example of how audio plugins work. It delays the output signal
by the nuber of samples set by delay=n where n is the number of
bytes.
*/
#define PLUGIN
#include <stdio.h>
@ -32,7 +32,6 @@ typedef struct pl_delay_s
int rate; // local data rate
int channels; // local number of channels
int format; // local format
} pl_delay_t;
static pl_delay_t pl_delay={NULL,NULL,0,0,0,0};
@ -42,9 +41,11 @@ static int control(int cmd,int arg){
switch(cmd){
case AOCONTROL_PLUGIN_SET_LEN:
if(pl_delay.data)
uninit();
free(pl_delay.data);
pl_delay.len = ao_plugin_data.len;
pl_delay.data=(void*)malloc(ao_plugin_data.len);
if(!pl_delay.data)
return CONTROL_ERROR;
return CONTROL_OK;
}
return -1;
@ -54,11 +55,12 @@ static int control(int cmd,int arg){
// return: 1=success 0=fail
static int init(){
int i=0;
float time_delay; // The number of tsamples this plugin delays the output data
/* if the output format of any of the below parameters differs from
float time_delay; // The time in [s] this plugin delays the output data
/* If the output format of any of the below parameters differs from
what is give it should be changed. See ao_plugin init() */
pl_delay.rate=ao_plugin_data.rate;
pl_delay.channels=ao_plugin_data.channels+1; //0=mono 1=stereo
pl_delay.channels=ao_plugin_data.channels; //1=mono 2=stereo
pl_delay.format=ao_plugin_data.format;
// Tell ao_plugin how much this plugin adds to the overall time delay
@ -67,11 +69,13 @@ static int init(){
time_delay/=2;
ao_plugin_data.delay_fix+=time_delay;
// Create buffer for the delayed data
pl_delay.delay=(void*)malloc(ao_plugin_cfg.pl_delay_len);
if(!pl_delay.delay)
return 0;
for(i=0;i<ao_plugin_cfg.pl_delay_len;i++)
((char*)pl_delay.delay)[i]=0;
memset(pl_delay.delay, 0, ao_plugin_cfg.pl_delay_len);
// Print some cool remark of what the plugin does
printf("[pl_delay] Output sound delayed by %i bytes\n",ao_plugin_cfg.pl_delay_len);
return 1;
}
@ -116,3 +120,12 @@ static int play(){