#1351 Restores semi-accurate timestamps of sample buffers to ensure P25 & DMR decoded messages have accurate timestamps and MBE recording voice frames have accurate timestamps. (#1357)

Co-authored-by: Dennis Sheirer <dsheirer@github.com>

src/main/java/io/github/dsheirer/buffer/INativeBufferFactory.java

@@ -33,7 +33,15 @@ public interface INativeBufferFactory
      *
      * @param samples byte array copied from native memory
      * @param timestamp of the samples
+     * @param samplesPerMillisecond to calculate timestamp offset for child buffers.
      * @return instance
      */
     INativeBuffer getBuffer(ByteBuffer samples, long timestamp);
+
+    /**
+     * Sets the samples per millisecond rate based on the current sample rate.
+     *
+     * @param samplesPerMillisecond to calculate timestamp offset for child buffers.
+     */
+    void setSamplesPerMillisecond(float samplesPerMillisecond);
 }