mplayer -af help now lists all available audio filters.

Updated manual page.


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@13270 b3059339-0415-0410-9bf9-f77b7e298cf2

4 files changed, 19 insertions, 0 deletions

diff --git a/DOCS/man/en/mplayer.1 b/DOCS/man/en/mplayer.1
index 983c1ddb5a..6e83ca75f4 100644
--- a/DOCS/man/en/mplayer.1
+++ b/DOCS/man/en/mplayer.1
@@ -2766,6 +2766,9 @@ Skip FFmpeg's MP3 decoder.
 .B \-af <filter1[=parameter1:parameter2:...],filter2,...>
 Activate a comma separated list of audio filters and their options.
 Also see the audio filters section of the documentation.
+.br
+.I NOTE:
+To get a full list of available audio filters, see \-af help.
 .sp 1
 Available filters are:
 .RSs
diff --git a/libaf/af.c b/libaf/af.c
index 10ee1660bb..5728095ab3 100644
--- a/libaf/af.c
+++ b/libaf/af.c
@@ -610,3 +610,11 @@ int af_control_any_rev (af_stream_t* s, int cmd, void* arg) {
   return (res == AF_OK);
 }
 
+void af_help (void) {
+  int i = 0;
+  while (filter_list[i]) {
+    af_msg(AF_MSG_INFO, "  %-15s: %s\n", filter_list[i]->name, filter_list[i]->info);
+    i++;
+  }
+}
+
diff --git a/libaf/af.h b/libaf/af.h
index 003412d504..05e277d58c 100644
--- a/libaf/af.h
+++ b/libaf/af.h
@@ -205,6 +205,9 @@ int af_to_ms(int n, int* in, float* out, int rate);
 /* Helper function for testing the output format */
 int af_test_output(struct af_instance_s* af, af_data_t* out);
 
+/** Print a list of all available audio filters */
+void af_help(void);
+
 /* Memory reallocation macro: if a local buffer is used (i.e. if the
    filter doesn't operate on the incoming buffer this macro must be
    called to ensure the buffer is big enough. */
diff --git a/mplayer.c b/mplayer.c
index d64edb97c9..c092c7ac4e 100644
--- a/mplayer.c
+++ b/mplayer.c
@@ -950,6 +950,11 @@ if(!codecs_file || !parse_codec_cfg(codecs_file)){
       printf("\n");
       exit(0);
     }
+    if(af_cfg.list && strcmp(af_cfg.list[0],"help")==0){
+      af_help();
+      printf("\n");
+      exit(0);
+    }
 #ifdef HAVE_X11
     if(vo_fstype_list && strcmp(vo_fstype_list[0],"help")==0){
       fstype_help();