Removed now unused Spectrum Invert Selection option (it should possibly be replaced with something else)

Fixed scaling of spectrum to also take FFT size into account
Fixed selection drawing in karaoke mode for spectrum
Moved syllable texts to top of audio display in karaoke mode

Originally committed to SVN as r733.

aegisub/audio_display.cpp

@@ -368,7 +368,7 @@ void AudioDisplay::UpdateImage(bool weak) {
 						temptext.Trim(true);
 						temptext.Trim(false);
 						GetTextExtent(temptext,&tw,&th,NULL,NULL,&curFont);
-						dc.DrawText(temptext,(pos1+pos2-tw)/2,h-th-4);
+						dc.DrawText(temptext,(pos1+pos2-tw)/2,4);
 					}
 				}
 			}
@@ -551,7 +551,7 @@ void AudioDisplay::DrawSpectrum(wxDC &finaldc,bool weak) {
 
 	if (hasSel && spectrumDisplaySelected && selStartCap < selEndCap) {
 		dc.SelectObject(*spectrumDisplaySelected);
-		finaldc.Blit(selStart, 0, selEnd-selStart, h, &dc, selStart, 0);
+		finaldc.Blit(selStartCap, 0, selEndCap-selStartCap, h, &dc, selStartCap, 0);
 	}
 }
 

aegisub/audio_spectrum.cpp

@@ -94,7 +94,7 @@ public:
 		float *out_r = new float[line_length*2];
 		float *out_i = new float[line_length*2];
 
-		FFT fft; // TODO: use FFTW instead?
+		FFT fft; // TODO: use FFTW instead? A wavelet?
 
 		for (unsigned long i = 0; i < length; ++i) {
 			provider->GetAudio(raw_sample_data, sample, line_length*2);
@@ -141,7 +141,7 @@ public:
 	{
 		if (i >= start && i-start <= length) {
 			// Determine which sub-cache this line resides in
-			int subcache = (i-start) / subcache_length;
+			size_t subcache = (i-start) / subcache_length;
 			assert(subcache >= 0 && subcache < sub_caches.size());
 
 			if (!sub_caches[subcache]) {
@@ -243,6 +243,13 @@ void AudioSpectrum::RenderRange(__int64 range_start, __int64 range_end, bool sel
 	else
 		palette = colours_normal;
 
+	// Some scaling constants
+	const int maxpower = (1 << (16 - 1))*256;
+
+	const double upscale = power_scale * 16384 / line_length;
+	const double onethirdmaxpower = maxpower / 3, twothirdmaxpower = maxpower * 2/3;
+	const double logoverscale = log(maxpower*upscale - twothirdmaxpower);
+
 	for (unsigned long i = first_line; i <= last_line; ++i) {
 		// Handle horizontal compression and don't unneededly re-render columns
 		int imgcol = imgleft + imgwidth * (i - first_line) / (last_line - first_line + 1);
@@ -251,15 +258,11 @@ void AudioSpectrum::RenderRange(__int64 range_start, __int64 range_end, bool sel
 
 		AudioSpectrumCache::CacheLine &line = cache->GetLine(i);
 
-		int maxpower = (1 << (16 - 1))*256;
-		
 		// Calculate the signal power over frequency
 		// "Compressed" scale
-		double onethirdmaxpower = maxpower / 3, twothirdmaxpower = maxpower * 2/3;
-		double logoverscale = log(maxpower*8*power_scale - twothirdmaxpower);
-		for (int j = 0; j < line_length; j++) {
+		for (unsigned int j = 0; j < line_length; j++) {
 			// First do a simple linear scale power calculation -- 8 gives a reasonable default scaling
-			power[j] = line[j] * 8 * power_scale;
+			power[j] = line[j] * upscale;
 			if (power[j] > maxpower * 2/3) {
 				double p = power[j] - twothirdmaxpower;
 				p = log(p) * onethirdmaxpower / logoverscale;
@@ -272,6 +275,7 @@ void AudioSpectrum::RenderRange(__int64 range_start, __int64 range_end, bool sel
 	img[((imgheight-y-1)*imgpitch+x)*3 + 1] = palette[intensity*3+1]; \
 	img[((imgheight-y-1)*imgpitch+x)*3 + 2] = palette[intensity*3+2];
 
+		// Handle horizontal expansion
 		int next_line_imgcol = imgleft + imgwidth * (i - first_line + 1) / (last_line - first_line + 1);
 		if (next_line_imgcol >= imgpitch)
 			next_line_imgcol = imgpitch-1;

aegisub/changelog.txt

@@ -78,6 +78,7 @@ Please visit http://aegisub.net to download latest version
 - Fixed loading of SRT and TXT files, which were causing an empty line to appear at the start of the file. (AMZ)
 - Added options to toggle the display of the audio timeline and of the time over the mouse cursor. (AMZ)
 - Destination of screenshots can now be set in the options dialog. (AMZ)
+- Moved karaoke syllable text in audio display to the top instead of bottom, since it often covers important information in spectrum mode (jfs)
 
 
 = 1.10 beta - 2006.08.07 ===========================

aegisub/dialog_options.cpp

@@ -487,9 +487,9 @@ DialogOptions::DialogOptions(wxWindow *parent)
 		wxFlexGridSizer *displaySizer4 = new wxFlexGridSizer(14,2,2,2);
 
 		// First sizer
-		wxString labels1[5] = { _("Spectrum Invert Selection"), _("Draw Secondary Lines"), _("Draw Selection Background"), _("Draw Timeline"), _("Draw Cursor Time") };
-		wxString options1[5] = { _T("Spectrum invert selection"), _T("Draw Secondary Lines"), _T("Draw Selection Background") , _T("Draw Timeline"), _T("Draw Cursor Time")};
-		for (int i=0;i<5;i++) {
+		wxString labels1[4] = { _("Draw Secondary Lines"), _("Draw Selection Background"), _("Draw Timeline"), _("Draw Cursor Time") };
+		wxString options1[4] = { _T("Draw Secondary Lines"), _T("Draw Selection Background") , _T("Draw Timeline"), _T("Draw Cursor Time")};
+		for (int i=0;i<4;i++) {
 			wxCheckBox *control = new wxCheckBox(displayPage,-1,labels1[i]);
 			Bind(control,_T("Audio ") + options1[i]);
 			displaySizer3->Add(control,1,wxEXPAND | wxALL,5);

aegisub/options.cpp

@@ -214,7 +214,6 @@ void OptionsManager::LoadDefaults() {
 	// Audio Cosmetic
 	SetModificationType(MOD_AUDIO);
 	SetInt(_T("Audio Line boundaries Thickness"), 2);
-	SetBool(_T("Audio Spectrum invert selection"), true);
 	SetBool(_T("Audio Draw Secondary Lines"), true);
 	SetBool(_T("Audio Draw Selection Background"), true);
 	SetBool(_T("Audio Draw Timeline"),true);

aegisub/toggle_bitmap.cpp

@@ -81,8 +81,6 @@ void ToggleBitmap::SetValue(bool _state) {
 //////////////
 // Draw image
 void ToggleBitmap::DrawImage(wxDC &dc) {
-	dc.BeginDrawing();
-
 	// Get size
 	int w,h;
 	GetClientSize(&w,&h);
@@ -105,8 +103,6 @@ void ToggleBitmap::DrawImage(wxDC &dc) {
 	
 	// Draw bitmap
 	dc.DrawBitmap(img,(w-img.GetWidth())/2,(h-img.GetHeight())/2,true);
-
-	dc.EndDrawing();
 }