first commit

src/jbass/HandleWavWriter.java

@@ -0,0 +1,156 @@
+package jbass;
+import com.sun.jna.Pointer;
+import com.un4seen.bass.BASS;
+import com.un4seen.bass.BASSenc;
+import com.un4seen.bass.BASSenc.ENCODEPROC;
+
+import anywheresoftware.b4a.BA;
+
+@BA.ShortName("HandleWavWriter")
+@BA.Events(values= {
+		"log(msg as string)",
+		"pcmbytes(bb() as byte)"
+})
+public class HandleWavWriter implements HandleWriter {
+	private String event = "";
+	private BA ba;
+	private int PCMSize=0;						// size of written PCM bytes
+	private boolean inited = false;
+	private String NamaFile = "";
+	private boolean need_log_event = false;
+	private boolean need_pcmbytes_event = false;
+	
+	private BASS bass;
+	private BASSenc bassenc;
+	private ENCODEPROC theproc;
+	private int encoder_handle = 0;
+	private Object myobject;
+	
+	/**
+	 * Initialize WavWriter for B4A and B4J
+	 * @param eventname : event name 
+	 */
+	public void Initialize(BA bax, String eventname) {
+		NamaFile = "";
+		inited = false;
+		ba = bax;
+		event = eventname;
+		myobject = this;
+		if (ba!=null) {
+			if (!event.isEmpty()) {
+				need_log_event = ba.subExists(event+"_log");
+				need_pcmbytes_event = ba.subExists(event+"_pcmbytes");		
+			}
+		}
+		
+		bass = new BASS();
+		bassenc = new BASSenc();
+		if (bass.BASS_GetVersion()!=0) {
+			if (bassenc.BASS_Encode_GetVersion()!=0) {
+				inited = true;
+			}
+		}
+	}
+	
+	
+	/**
+	 * Check if WavWriter is initialized
+	 * @return true if initialized
+	 */
+	public boolean IsInitialized() {
+		return inited;
+	}
+	
+	private ENCODEPROC create_encodeproc() {
+		ENCODEPROC newproc = new ENCODEPROC() {
+
+			@Override
+			public void ENCODEPROC(int handle, int channel, Pointer buffer, int length, Pointer user) {
+				if (handle==0) return;
+				if (channel==0) return;
+				if (buffer==null) return;
+				if (length<1) return;
+				PCMSize+=length;
+				raise_pcmbytes_event(buffer.getByteArray(0, length));
+			}
+			
+		};
+		
+		return newproc;
+	}
+	
+	
+	
+	/**
+	 * Record from Other Bass Handle to file
+	 * File will be auto written by source handle
+	 * If source handle is closed, then WavWriter will also auto closed
+	 * @param recordfile : target WAV filename, if empty string, no file will be created
+	 * @param handle : other handle
+	 * @return true if success
+	 */
+	public boolean CreateFile_from_Handle(String recordfile, int handle) {
+		if (inited) {
+			int flag = bassenc.BASS_ENCODE_PCM | bassenc.BASS_ENCODE_AUTOFREE;
+			PCMSize = 0;
+			theproc = create_encodeproc();
+			encoder_handle = bassenc.BASS_Encode_Start(handle, recordfile, flag, theproc, null);
+			if (encoder_handle==0) {
+				raise_log_event("CreateFile_From_Handle::Encode_Start failed, code="+bass.GetBassErrorString());
+				return false;
+			} else {
+				NamaFile = recordfile;
+				raise_log_event("CreateFile_From_Handle success, target="+NamaFile);
+				return true;
+			}	
+		} else return false;
+		
+	}
+	
+	/**
+	 * Get Current Opened Filename
+	 * @return empty string if no file is opened
+	 */
+	public String getCurrentFileName() {
+		return NamaFile;
+	}
+	
+	/**
+	 * Get PCM Size, obtained from ENCPROC
+	 * @return value in int
+	 */
+	public int getSize() {
+		return PCMSize;
+	}
+	
+	// auto close by handler
+//	/**
+//	 * Close Wav Writer
+//	 */
+//	public void Close_Wav() {
+//		
+//		if (encoder_handle!=0) {
+//			if (!bassenc.BASS_Encode_Stop(encoder_handle)) {
+//				raise_log_event("Close_Wav::Encode_Stop failed, code="+bass.GetBassErrorString());
+//			}
+//			encoder_handle = 0;
+//		}		
+//	}
+	
+	
+	/**
+	 * Check if WAV file is opened and ready to write
+	 * @return true if opened
+	 */
+	public boolean FileIsOpened() {
+		return (encoder_handle != 0) ? true : false;
+	}
+	
+	private void raise_log_event(String msg) {
+		if (need_log_event) ba.raiseEventFromDifferentThread(myobject, null, 0, event+"_log", false, new Object[] {msg});
+	}
+
+	private void raise_pcmbytes_event(byte[] bb) {
+		if (need_pcmbytes_event) ba.raiseEventFromDifferentThread(myobject, null, 0, event+"_pcmbytes", false, new Object[] {bb});
+	}
+}