shithub: opus-tools

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Add a hidden --no-downmix knob to override the automatic downmix.

--- a/src/opusenc.c

+++ b/src/opusenc.c

@@ -183,6 +183,7 @@

     {"expect-loss", required_argument, NULL, 0},

     {"downmix-mono",no_argument,NULL, 0},

     {"downmix-stereo",no_argument,NULL, 0},

+    {"no-downmix",no_argument,NULL, 0},

     {"max-delay", required_argument, NULL, 0},

     {"save-range", required_argument, NULL, 0},

     {"set-ctl-int", required_argument, NULL, 0},

@@ -344,6 +345,8 @@

           downmix=1;

         }else if(strcmp(long_options[option_index].name,"downmix-stereo")==0){

           downmix=2;

+        }else if(strcmp(long_options[option_index].name,"no-downmix")==0){

+          downmix=-1;

         }else if(strcmp(long_options[option_index].name,"expect-loss")==0){

           expect_loss=atoi(optarg);

           if(expect_loss>100||expect_loss<0){

@@ -478,7 +481,7 @@

     downmix=inopt.channels>8?1:2;

   }

-  if(downmix&&downmix<inopt.channels)downmix=setup_downmix(&inopt,downmix);

+  if(downmix>0&&downmix<inopt.channels)downmix=setup_downmix(&inopt,downmix);

   else downmix=0;

   rate=inopt.rate;