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Add CIELAB lightness to waveform

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This commit is contained in:
Lawrence Lee
2020-08-05 11:57:34 -07:00
parent ba57a6c680
commit 9382306fed
7 changed files with 49 additions and 13 deletions
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31
rtgui/histogrampanel.cc
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@@ -379,7 +379,7 @@ void HistogramPanel::type_changed()
showRed->set_sensitive();
showGreen->set_sensitive();
showBlue->set_sensitive();
showValue->set_sensitive(false);
showValue->set_sensitive();
showChro->set_sensitive(false);
showRAW->set_sensitive(false);
showMode->set_sensitive(false);
@@ -663,7 +663,7 @@ void HistogramRGBArea::updateBackBuffer (int r, int g, int b, const Glib::ustrin
drawBar(cc, b, 255.0, winw, winh, s);
}
if((needLuma || needChroma) && options.histogramScopeType == 0) {
if((needLuma || needChroma) && options.histogramScopeType <= 1) {
float Lab_L, Lab_a, Lab_b;
rtengine::Color::rgb2lab01(profile, profileW, r / 255.f, g / 255.f, b / 255.f, Lab_L, Lab_a, Lab_b, options.rtSettings.HistogramWorking);
@@ -673,7 +673,7 @@ void HistogramRGBArea::updateBackBuffer (int r, int g, int b, const Glib::ustrin
drawBar(cc, Lab_L, 100.0, winw, winh, s);
}
if (needChroma) {
if (needChroma && options.histogramScopeType == 0) {
// Chroma
double chromaval = sqrt(Lab_a * Lab_a + Lab_b * Lab_b) / 1.8;
cc->set_source_rgb(0.9, 0.9, 0.0);
@@ -960,7 +960,8 @@ void HistogramArea::update(
int waveformWidth,
const int waveformRed[][256],
const int waveformGreen[][256],
const int waveformBlue[][256]
const int waveformBlue[][256],
const int waveformLuma[][256]
)
{
if (histRed) {
@@ -980,13 +981,16 @@ void HistogramArea::update(
rwave.reset(new int[waveformWidth][256]);
gwave.reset(new int[waveformWidth][256]);
bwave.reset(new int[waveformWidth][256]);
lwave.reset(new int[waveformWidth][256]);
}
int (* const rw)[256] = rwave.get();
int (* const gw)[256] = gwave.get();
int (* const bw)[256] = bwave.get();
int (* const lw)[256] = lwave.get();
memcpy(rw, waveformRed, 256 * waveformWidth * sizeof(rw[0][0]));
memcpy(gw, waveformGreen, 256 * waveformWidth * sizeof(gw[0][0]));
memcpy(bw, waveformBlue, 256 * waveformWidth * sizeof(bw[0][0]));
memcpy(lw, waveformLuma, 256 * waveformWidth * sizeof(lw[0][0]));
wave_buffer_dirty = true;
} else if (scopeType >= 2) {
vectorscope_scale = vectorscopeScale;
@@ -1392,9 +1396,11 @@ void HistogramArea::drawWaveform(Cairo::RefPtr<Cairo::Context> &cr, int w, int h
if (wave_buffer_dirty) {
wave_buffer.reset(new unsigned char[256 * cairo_stride]);
wave_buffer_luma.reset(new unsigned char[256 * cairo_stride]);
// Clear waveform.
memset(wave_buffer.get(), 0, 256 * cairo_stride);
memset(wave_buffer_luma.get(), 0, 256 * cairo_stride);
// TODO: Optimize.
for (int col = 0; col < waveform_width; col++) {
@@ -1413,6 +1419,16 @@ void HistogramArea::drawWaveform(Cairo::RefPtr<Cairo::Context> &cr, int w, int h
}
}
if (needLuma) {
for (int col = 0; col < waveform_width; col++) {
for (int val = 0; val < 256; val++) {
const unsigned char l = min<float>(scale * lwave[col][val], 0xff);
*(uint32_t*)&(wave_buffer_luma[(255 - val) * cairo_stride + col * 4]) =
l | (l << 8) | (l << 16) | (l << 24);
}
}
}
wave_buffer_dirty = false;
}
@@ -1424,6 +1440,13 @@ void HistogramArea::drawWaveform(Cairo::RefPtr<Cairo::Context> &cr, int w, int h
cr->set_source(surface, 0, 0);
cr->set_operator(Cairo::OPERATOR_OVER);
cr->paint();
if (needLuma) {
surface = Cairo::ImageSurface::create(
wave_buffer_luma.get(), Cairo::FORMAT_ARGB32, waveform_width, 256, cairo_stride);
cr->set_source(surface, 0, 0);
cr->set_operator(Cairo::OPERATOR_OVER);
cr->paint();
}
surface->finish();
cr->set_matrix(orig_matrix);
}