[Mplayer-cvslog] CVS: main/libao2 pl_delay.c,NONE,1.1 ao_plugin.c,1.1,1.2 audio_out.h,1.7,1.8 audio_plugin.h,1.1,1.2 audio_plugin_internal.h,1.1,1.2
Anders Johansson
anders at mplayer.dev.hu
Sun Nov 25 15:29:57 CET 2001
Update of /cvsroot/mplayer/main/libao2
In directory mplayer:/var/tmp.root/cvs-serv24998/libao2
Modified Files:
ao_plugin.c audio_out.h audio_plugin.h audio_plugin_internal.h
Added Files:
pl_delay.c
Log Message:
Changes to audio out plugin, first plugin added
--- NEW FILE ---
/* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include "audio_out.h"
#include "audio_plugin.h"
#include "audio_plugin_internal.h"
#include "afmt.h"
static ao_info_t info =
{
"Null audio plugin",
"delay",
"Anders",
""
};
LIBAO_PLUGIN_EXTERN(delay)
// local data
typedef struct pl_delay_s
{
void* data; // local audio data block
void* delay; // data block used for delaying audio signal
int len; // local buffer length
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};
// global data
int pl_delay_len=0; // number of samples to delay sound output set from cmd line
// to set/get/query special features/parameters
static int control(int cmd,int arg){
switch(cmd){
case AOCONTROL_PLUGIN_SET_LEN:
if(pl_delay.data)
uninit();
pl_delay.len = arg;
pl_delay.data=(void*)malloc(arg);
return CONTROL_OK;
}
return -1;
}
// open & setup audio device
// 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
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.format=ao_plugin_data.format;
// Tell ao_plugin how much this plugin adds to the overall time delay
time_delay=-1*(float)pl_delay_len/((float)pl_delay.channels*(float)pl_delay.rate);
if(pl_delay.format != AFMT_U8 && pl_delay.format != AFMT_S8)
time_delay/=2;
ao_plugin_data.delay_fix+=time_delay;
pl_delay.delay=(void*)malloc(pl_delay_len);
if(!pl_delay.delay)
return 0;
for(i=0;i<pl_delay_len;i++)
((char*)pl_delay.delay)[i]=0;
printf("[pl_delay] Output sound delayed by %i bytes\n",pl_delay_len);
return 1;
}
// close plugin
static void uninit(){
if(pl_delay.delay)
free(pl_delay.delay);
if(pl_delay.data)
free(pl_delay.data);
pl_delay_len=0;
}
// empty buffers
static void reset(){
int i = 0;
for(i=0;i<pl_delay.len;i++)
((char*)pl_delay.data)[i]=0;
for(i=0;i<pl_delay_len;i++)
((char*)pl_delay.delay)[i]=0;
}
// processes 'ao_plugin_data.len' bytes of 'data'
// called for every block of data
static int play(){
int i=0;
int j=0;
int k=0;
// Copy end of prev block to begining of buffer
for(i=0;i<pl_delay_len;i++,j++)
((char*)pl_delay.data)[j]=((char*)pl_delay.delay)[i];
// Copy current block except end
for(i=0;i<ao_plugin_data.len-pl_delay_len;i++,j++,k++)
((char*)pl_delay.data)[j]=((char*)ao_plugin_data.data)[k];
// Save away end of current block for next call
for(i=0;i<pl_delay_len;i++,k++)
((char*)pl_delay.delay)[i]=((char*)ao_plugin_data.data)[k];
// Set output data block
ao_plugin_data.data=pl_delay.data;
return 1;
}
Index: ao_plugin.c
===================================================================
RCS file: /cvsroot/mplayer/main/libao2/ao_plugin.c,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- ao_plugin.c 24 Nov 2001 05:24:06 -0000 1.1
+++ ao_plugin.c 25 Nov 2001 14:29:54 -0000 1.2
@@ -18,24 +18,98 @@
LIBAO_EXTERN(plugin)
-#define plugin(i) (ao_plugin_local_data.ao_plugins[i])
-#define driver() (ao_plugin_local_data.ao_driver)
+#define plugin(i) (ao_plugin_local_data.plugins[i])
+#define driver() (ao_plugin_local_data.driver)
-/* local data */
+#define NPL 2 //Number of PLugins
+
+extern ao_plugin_functions_t audio_plugin_delay;
+
+// local data
typedef struct ao_plugin_local_data_s
{
- ao_plugin_functions_t** ao_plugins; /* List of all plugins */
- ao_functions_t* ao_driver; /* ao driver used by ao_plugin */
+ char* cfg_plugins; // List of plugins read from cfg-file
+ ao_functions_t* driver; // Output driver set in mplayer.c
+ ao_plugin_functions_t** plugins; // List of used plugins
+ ao_plugin_functions_t* available_plugins[NPL]; // List of abailabel plugins
} ao_plugin_local_data_t;
-ao_plugin_local_data_t ao_plugin_local_data;
+ao_plugin_local_data_t ao_plugin_local_data={
+ NULL,
+ NULL,
+ NULL,
+ {
+ &audio_plugin_delay,
+ NULL
+ }
+};
-/* gloabal data */
+// gloabal data
ao_plugin_data_t ao_plugin_data;
+
// to set/get/query special features/parameters
static int control(int cmd,int arg){
- return driver()->control(cmd,arg);
+ switch(cmd){
+ case AOCONTROL_SET_PLUGIN_DRIVER:
+ ao_plugin_local_data.driver=(ao_functions_t*)arg;
+ return CONTROL_OK;
+ case AOCONTROL_SET_PLUGIN_LIST:
+ ao_plugin_local_data.cfg_plugins=(char*)arg;
+ return CONTROL_OK;
+ default:
+ return driver()->control(cmd,arg);
+ }
+ return CONTROL_UNKNOWN;
+}
+
+// Recursive function for adding plugins
+// return 1 for success and 0 for error
+int add_plugin(int i,char* cfg){
+ int cnt=0;
+ // Find end of plugin name
+ while((cfg[cnt]!=',')&&(cfg[cnt]!='\0')&&(cnt<100)) cnt++;
+ if(cnt >= 100)
+ return 0;
+
+ // Is this the last itteration or just another plugin
+ if(cfg[cnt]=='\0'){
+ ao_plugin_local_data.plugins=malloc((i+1)*sizeof(ao_plugin_functions_t*));
+ if(ao_plugin_local_data.plugins){
+ ao_plugin_local_data.plugins[i+1]=NULL;
+ // Find the plugin matching the cfg string name
+ cnt=0;
+ while(ao_plugin_local_data.available_plugins[cnt] && cnt<20){
+ if(0==strcmp(ao_plugin_local_data.available_plugins[cnt]->info->short_name,cfg)){
+ ao_plugin_local_data.plugins[i]=ao_plugin_local_data.available_plugins[cnt];
+ return 1;
+ }
+ cnt++;
+ }
+ printf("[plugin]: Invalid plugin: %s \n",cfg);
+ return 0;
+ }
+ else
+ return 0;
+ } else {
+ cfg[cnt]='\0';
+ if(add_plugin(i+1,&cfg[cnt+1])){
+ cnt=0;
+ // Find the plugin matching the cfg string name
+ while(ao_plugin_local_data.available_plugins[cnt] && cnt < 20){
+ if(0==strcmp(ao_plugin_local_data.available_plugins[cnt]->info->short_name,cfg)){
+ ao_plugin_local_data.plugins[i]=ao_plugin_local_data.available_plugins[cnt];
+ return 1;
+ }
+ cnt++;
+ }
+ printf("[plugin]: Invalid plugin: %s \n",cfg);
+ return 0;
+ }
+ else
+ return 0;
+ }
+ return 0; // Will never happen...
}
// open & setup audio device and plugins
@@ -43,11 +117,12 @@
static int init(int rate,int channels,int format,int flags){
int ok=1;
- /* FIXME these are cfg file parameters */
+ /* Create list of plugins from cfg option */
int i=0;
- ao_plugin_local_data.ao_plugins=malloc((i+1)*sizeof(ao_plugin_functions_t*));
- plugin(i)=NULL;
- ao_plugin_local_data.ao_driver=audio_out_drivers[1];
+ if(ao_plugin_local_data.cfg_plugins){
+ if(!add_plugin(i,ao_plugin_local_data.cfg_plugins))
+ return 0;
+ }
/* Set input parameters and itterate through plugins each plugin
changes the parameters according to its output */
@@ -64,15 +139,23 @@
if(!ok) return 0;
+ // This should never happen but check anyway
+ if(NULL==ao_plugin_local_data.driver)
+ return 0;
+
ok = driver()->init(ao_plugin_data.rate,
- ao_plugin_data.channels,
- ao_plugin_data.format,
- flags);
+ ao_plugin_data.channels,
+ ao_plugin_data.format,
+ flags);
if(!ok) return 0;
/* Now that the driver is initialized we can calculate and set the
input and output buffers for each plugin */
ao_plugin_data.len=driver()->get_space();
+ while((i>0) && ok)
+ ok=plugin(--i)->control(AOCONTROL_PLUGIN_SET_LEN,ao_plugin_data.len);
+
+ if(!ok) return 0;
return 1;
}
@@ -83,8 +166,8 @@
driver()->uninit();
while(plugin(i))
plugin(i++)->uninit();
- if(ao_plugin_local_data.ao_plugins)
- free(ao_plugin_local_data.ao_plugins);
+ if(ao_plugin_local_data.plugins)
+ free(ao_plugin_local_data.plugins);
}
// stop playing and empty buffers (for seeking/pause)
Index: audio_out.h
===================================================================
RCS file: /cvsroot/mplayer/main/libao2/audio_out.h,v
retrieving revision 1.7
retrieving revision 1.8
diff -u -r1.7 -r1.8
--- audio_out.h 24 Nov 2001 05:21:22 -0000 1.7
+++ audio_out.h 25 Nov 2001 14:29:54 -0000 1.8
@@ -59,8 +59,12 @@
#define AOCONTROL_QUERY_FORMAT 3 /* test for availabilty of a format */
#define AOCONTROL_GET_VOLUME 4
#define AOCONTROL_SET_VOLUME 5
+#define AOCONTROL_SET_PLUGIN_DRIVER 6
+#define AOCONTROL_SET_PLUGIN_LIST 7
typedef struct ao_control_vol_s {
float left;
float right;
} ao_control_vol_t;
+
+
Index: audio_plugin.h
===================================================================
RCS file: /cvsroot/mplayer/main/libao2/audio_plugin.h,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- audio_plugin.h 24 Nov 2001 05:24:06 -0000 1.1
+++ audio_plugin.h 25 Nov 2001 14:29:54 -0000 1.2
@@ -18,10 +18,14 @@
int channels; /* setup number of channels */
int format; /* setup format */
double sz_mult; /* Buffer size multiplier */
- double sz_fix; /* Fix extra buffer size */
+ double sz_fix; /* Fix (as in static) extra buffer size */
float delay_mult; /* Delay multiplier */
float delay_fix; /* Fix delay */
}ao_plugin_data_t;
extern ao_plugin_data_t ao_plugin_data;
+//List of plugins
+
+
+#define AOCONTROL_PLUGIN_SET_LEN 1
Index: audio_plugin_internal.h
===================================================================
RCS file: /cvsroot/mplayer/main/libao2/audio_plugin_internal.h,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- audio_plugin_internal.h 24 Nov 2001 05:24:06 -0000 1.1
+++ audio_plugin_internal.h 25 Nov 2001 14:29:54 -0000 1.2
@@ -1,11 +1,11 @@
// prototypes:
static int control(int cmd,int arg);
-static int init(float*);
+static int init();
static void uninit();
static void reset();
-static int play(void* data,int len,int flags);
+static int play();
-#define LIBAO_PLUGIN_EXTERN(x) ao_functions_t audio_out_##x =\
+#define LIBAO_PLUGIN_EXTERN(x) ao_functions_t audio_plugin_##x =\
{\
&info,\
control,\
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