Add volume property to jack consumer.

diff --git a/src/modules/jackrack/consumer_jack.c b/src/modules/jackrack/consumer_jack.c
index cd3bbdd3738e825b46519cb11db3260e615ebac0..74f3ea349e921620d4183c3ec84b0eb29f318994 100644 (file)
--- a/src/modules/jackrack/consumer_jack.c
+++ b/src/modules/jackrack/consumer_jack.c
@@ -110,6 +110,9 @@ mlt_consumer consumer_jack_init( mlt_profile profile, mlt_service_type type, con
                        // Set frequency from JACK
                        mlt_properties_set_int( properties, "frequency", (int) jack_get_sample_rate( self->jack ) );
 
+                       // Set default volume
+                       mlt_properties_set_double( properties, "volume", 1.0 );
+
                        // Ensure we don't join on a non-running object
                        self->joined = 1;
 
@@ -312,6 +315,15 @@ static int consumer_play_audio( consumer_jack self, mlt_frame frame, int init_au
        {
                int i;
                size_t mlt_size = samples * sizeof(float);
+               float volume = mlt_properties_get_double( properties, "volume" );
+
+               if ( volume != 1.0 )
+               {
+                       float *p = buffer;
+                       i = samples * channels + 1;
+                       while (--i)
+                               *p++ *= volume;
+               }
 
                // Write into output ringbuffer
                for ( i = 0; i < channels; i++ )