FS-7654 regression on eavesdropping on channels playing a file because of…

FS-7654 regression on eavesdropping on channels playing a file because of channel count of 0 on write frame from stream_file

src/switch_ivr_async.c

@@ -1693,10 +1693,12 @@ static switch_bool_t eavesdrop_callback(switch_media_bug_t *bug, void *user_data
 
 				if (switch_buffer_inuse(ep->w_buffer) >= rframe->datalen) {
 					uint32_t bytes;
+					int channels = rframe->channels ? rframe->channels : 1;
+
 					switch_buffer_lock(ep->w_buffer);
 					bytes = (uint32_t) switch_buffer_read(ep->w_buffer, data, rframe->datalen);
 
-					rframe->datalen = switch_merge_sln(rframe->data, rframe->samples, (int16_t *) data, bytes / 2, rframe->channels) * 2 * rframe->channels;
+					rframe->datalen = switch_merge_sln(rframe->data, rframe->samples, (int16_t *) data, bytes / 2, channels) * 2 * channels;
 					rframe->samples = rframe->datalen / 2;
 
 					switch_buffer_unlock(ep->w_buffer);

src/switch_ivr_play_say.c

@@ -1438,7 +1438,7 @@ SWITCH_DECLARE(switch_status_t) switch_ivr_play_file(switch_core_session_t *sess
 							  "Setup timer success %u bytes per %d ms! %d ch\n", len, interval, codec.implementation->number_of_channels);
 		}
 		write_frame.rate = fh->samplerate;
-
+		write_frame.channels = fh->channels;
 		if (timer_name) {
 			/* start a thread to absorb incoming audio */
 			switch_core_service_session(session);