Still broken (and disabled) scrub code

Originally committed to SVN as r461.

core/audio_display.cpp

@@ -1201,7 +1201,7 @@ void AudioDisplay::OnMouseEvent(wxMouseEvent& event) {
 	}
 
 	// Stop scrubbing
-	bool scrubButton = event.ButtonIsDown(wxMOUSE_BTN_MIDDLE);
+	bool scrubButton = false && event.ButtonIsDown(wxMOUSE_BTN_MIDDLE);
 	if (scrubbing && !scrubButton) {
 		// Release mouse
 		scrubbing = false;
@@ -1242,17 +1242,37 @@ void AudioDisplay::OnMouseEvent(wxMouseEvent& event) {
 		if (scrubDelta != 0 && scrubDeltaTime > 0) {
 			// Create buffer
 			int bufSize = scrubDeltaTime * scrubProvider->GetSampleRate() / CLK_TCK;
+			scrubDelta = bufSize;
 			short *buf = new short[bufSize];
 
 			// Flag as inverted, if necessary
 			bool invert = scrubDelta < 0;
 			if (invert) scrubDelta = -scrubDelta;
 
-			// Copy data from original provider to buffer and normalize it
+			// Copy data from original provider to temp buffer
 			short *temp = new short[scrubDelta];
 			provider->GetAudio(temp,MIN(curScrubPos,scrubLastPos),scrubDelta);
-			float scale = float(scrubDelta) / float(bufSize);
+
-			for (int i=0;i<bufSize;i++) buf[i] = temp[int(i*scale)];
+			// Scale
+			//float scale = float(scrubDelta) / float(bufSize);
+			//float start,end;
+			//int istart,iend;
+			//float tempfinal;
+			//for (int i=0;i<bufSize;i++) {
+			//	start = i*scale;
+			//	end = (i+1)*scale;
+			//	istart = (int) start;
+			//	iend = (int) end;
+			//	if (istart == iend) tempfinal = temp[istart] * (end - start);
+			//	else {
+			//		tempfinal = temp[istart] * (1 + istart - start) + temp[iend] * (end - iend);
+			//		for (int j=istart+1;j<iend;j++) tempfinal += temp[i];
+			//	}
+			//	buf[i] = tempfinal / scale;
+			//}
+			int len = MIN(bufSize,scrubDelta);
+			for (int i=0;i<len;i++) buf[i] = temp[i];
+			for (int i=len;i<bufSize;i++) buf[i] = 0;
 			delete temp;
 
 			// Invert

core/audio_provider_stream.cpp

@@ -40,12 +40,17 @@
 #include "utils.h"
 
 
+#define BUFSIZE 8192
+
+
 ///////////////
 // Constructor
 StreamAudioProvider::StreamAudioProvider() {
 	bufLen = 8192;
 	startPos = 0;
-	endPos = 8192;
+	endPos = BUFSIZE;
+	buffered = 0;
+	hasBuf = false;
 	num_samples = 0xFFFFFFFFFFFFFF;
 }
 
@@ -67,16 +72,16 @@ void StreamAudioProvider::GetAudio(void *buf, __int64 start, __int64 count) {
 	__int64 left = count;
 	__int64 written = 0;
 	int toWrite;
-	while (left > 0) {
+	while (hasBuf && left > 0) {
 		// Discard done
-		if (startPos == 8192) {
+		if (startPos == BUFSIZE) {
 			buffer.pop_front();
 			startPos = 0;
 		}
 
 		// Is last?
 		bool isLast = buffer.size() == 1;
-		int size = 8192;
+		int size = BUFSIZE;
 		if (isLast) size = endPos;
 
 		// Write
@@ -85,6 +90,7 @@ void StreamAudioProvider::GetAudio(void *buf, __int64 start, __int64 count) {
 		startPos += toWrite;
 		written += toWrite;
 		left -= toWrite;
+		buffered -= toWrite;
 
 		// Last
 		if (isLast) break;
@@ -92,6 +98,7 @@ void StreamAudioProvider::GetAudio(void *buf, __int64 start, __int64 count) {
 
 	// Still left, fill with zero
 	if (left > 0) {
+		hasBuf = false;
 		short *dst = (short*) buf;
 		for (__int64 i=written;i<count;i++) {
 			dst[i] = 0;
@@ -109,18 +116,22 @@ void StreamAudioProvider::Append(void *src, __int64 count) {
 	int toRead;
 	while (left > 0) {
 		// Check space
-		if (endPos == 8192) {
+		if (endPos == BUFSIZE) {
 			buffer.push_back(new BufferChunk);
 			endPos = 0;
 		}
 
 		// Read
-		toRead = MIN(int(8192-endPos),int(left));
+		toRead = MIN(int(BUFSIZE-endPos),int(left));
 		memcpy(&(buffer.back()->buf[endPos]),((short*)src)+read,toRead);
 		endPos += toRead;
 		read += toRead;
+		buffered += toRead;
 		left -= toRead;
 	}
+
+	// Set buffered status
+	if (buffered > bufLen) hasBuf = true;
 }
 
 
@@ -136,6 +147,6 @@ void StreamAudioProvider::SetParams(int chan,int rate,int bps) {
 ////////////////////////////
 // Buffer chunk constructor
 StreamAudioProvider::BufferChunk::BufferChunk() {
-	buf.resize(8192);
+	buf.resize(BUFSIZE);
 	isFree = true;
 }

core/audio_provider_stream.h

@@ -61,6 +61,9 @@ private:
 	int endPos;
 	int bufLen;
 
+	int buffered;
+	bool hasBuf;
+
 public:
 	StreamAudioProvider();
 	~StreamAudioProvider();