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Send a command throught the filter chain until some item returns AF_OK. Patch by Reimar Doeffinger 

git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@12669 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
alex 2004-06-25 19:02:53 +00:00
parent 1d92564554
commit bbd5473353
2 changed files with 19 additions and 2 deletions
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16
libaf/af.c
View File

@ -82,7 +82,6 @@ af_instance_t* af_get(af_stream_t* s, char* name)
af_instance_t* af_create(af_stream_t* s, char* name)
{
char* cmdline = name;
char* delim = "=";
// Allocate space for the new filter and reset all pointers
af_instance_t* new=malloc(sizeof(af_instance_t));
@ -93,7 +92,7 @@ af_instance_t* af_create(af_stream_t* s, char* name)
memset(new,0,sizeof(af_instance_t));
// Check for commandline parameters
strsep(&cmdline, delim);
strsep(&cmdline, "=");
// Find filter from name
if(NULL == (new->info=af_find(name)))
@ -598,3 +597,16 @@ inline int af_resize_local_buffer(af_instance_t* af, af_data_t* data)
af->data->len=len;
return AF_OK;
}
// send control to all filters, starting with the last until
// one responds with AF_OK
int af_control_any_rev (af_stream_t* s, int cmd, void* arg) {
int res = AF_UNKNOWN;
af_instance_t* filt = s->last;
while (filt && res != AF_OK) {
res = filt->control(filt, cmd, arg);
filt = filt->prev;
}
return (res == AF_OK);
}

5
libaf/af.h
View File

@ -151,6 +151,11 @@ af_instance_t* af_get(af_stream_t* s, char* name);
// Filter data chunk through the filters in the list
af_data_t* af_play(af_stream_t* s, af_data_t* data);
// send control to all filters, starting with the last until
// one accepts the command with AF_OK.
// Returns true if accepting filter was found.
int af_control_any_rev (af_stream_t* s, int cmd, void* arg);
/* Calculate how long the output from the filters will be given the
input length "len". The calculated length is >= the actual
length */