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-rw-r--r--src/ColorTransformation.vala425
1 files changed, 185 insertions, 240 deletions
diff --git a/src/ColorTransformation.vala b/src/ColorTransformation.vala
index 435d3f4..8595e96 100644
--- a/src/ColorTransformation.vala
+++ b/src/ColorTransformation.vala
@@ -26,9 +26,9 @@ public struct RGBAnalyticPixel {
public RGBAnalyticPixel.from_quantized_components(uchar red_quantized,
uchar green_quantized, uchar blue_quantized) {
- this.red = ((float) red_quantized) * INV_255;
- this.green = ((float) green_quantized) * INV_255;
- this.blue = ((float) blue_quantized) * INV_255;
+ this.red = rgb_lookup_table[red_quantized];
+ this.green = rgb_lookup_table[green_quantized];
+ this.blue = rgb_lookup_table[blue_quantized];
}
public RGBAnalyticPixel.from_hsv(HSVAnalyticPixel hsv_pixel) {
@@ -86,118 +86,14 @@ public struct HSVAnalyticPixel {
public HSVAnalyticPixel.from_quantized_components(uchar hue_quantized,
uchar saturation_quantized, uchar light_value_quantized) {
- this.hue = ((float) hue_quantized) * INV_255;
- this.saturation = ((float) saturation_quantized) * INV_255;
- this.light_value = ((float) light_value_quantized) * INV_255;
+ this.hue = rgb_lookup_table[hue_quantized];
+ this.saturation = rgb_lookup_table[saturation_quantized];
+ this.light_value = rgb_lookup_table[light_value_quantized];
}
- public HSVAnalyticPixel.from_rgb(RGBAnalyticPixel p) {
- float max_component = float.max(float.max(p.red, p.green), p.blue);
- float min_component = float.min(float.min(p.red, p.green), p.blue);
+ public extern HSVAnalyticPixel.from_rgb(RGBAnalyticPixel p);
- light_value = max_component;
- saturation = (max_component != 0.0f) ? ((max_component - min_component) /
- max_component) : 0.0f;
-
- if (saturation == 0.0f) {
- hue = 0.0f; /* hue is undefined in the zero saturation case */
- } else {
- float delta = max_component - min_component;
- if (p.red == max_component) {
- hue = (p.green - p.blue) / delta;
- } else if (p.green == max_component) {
- hue = 2.0f + ((p.blue - p.red) / delta);
- } else if (p.blue == max_component) {
- hue = 4.0f + ((p.red - p.green) / delta);
- }
-
- hue *= 60.0f;
- if (hue < 0.0f)
- hue += 360.0f;
-
- hue /= 360.0f; /* normalize hue */
- }
-
- hue = hue.clamp(0.0f, 1.0f);
- saturation = saturation.clamp(0.0f, 1.0f);
- light_value = light_value.clamp(0.0f, 1.0f);
- }
-
- public RGBAnalyticPixel to_rgb() {
- RGBAnalyticPixel result = RGBAnalyticPixel();
-
- if (saturation == 0.0f) {
- result.red = light_value;
- result.green = light_value;
- result.blue = light_value;
- } else {
- float hue_denorm = hue * 360.0f;
- if (hue_denorm == 360.0f)
- hue_denorm = 0.0f;
-
- float hue_hexant = hue_denorm / 60.0f;
-
- int hexant_i_part = (int) hue_hexant;
-
- float hexant_f_part = hue_hexant - ((float) hexant_i_part);
-
- /* the p, q, and t quantities from section 13.3 of Foley, et. al. */
- float p = light_value * (1.0f - saturation);
- float q = light_value * (1.0f - (saturation * hexant_f_part));
- float t = light_value * (1.0f - (saturation * (1.0f - hexant_f_part)));
- switch (hexant_i_part) {
- /* the (r, g, b) components of the output pixel are computed
- from the light_value, p, q, and t quantities differently
- depending on which "hexant" (1/6 of a full rotation) of the
- HSV color cone the hue lies in. For example, if the hue lies
- in the yellow hexant, the dominant channels in the output
- are red and green, so we map relatively more of the light_value
- into these colors than if, say, the hue were to lie in the
- cyan hexant. See chapter 13 of Foley, et. al. for more
- information. */
- case 0:
- result.red = light_value;
- result.green = t;
- result.blue = p;
- break;
-
- case 1:
- result.red = q;
- result.green = light_value;
- result.blue = p;
- break;
-
- case 2:
- result.red = p;
- result.green = light_value;
- result.blue = t;
- break;
-
- case 3:
- result.red = p;
- result.green = q;
- result.blue = light_value;
- break;
-
- case 4:
- result.red = t;
- result.green = p;
- result.blue = light_value;
- break;
-
- case 5:
- result.red = light_value;
- result.green = p;
- result.blue = q;
- break;
-
- default:
- error("bad color hexant in HSV-to-RGB conversion");
- }
- }
-
- return result;
- }
+ public extern RGBAnalyticPixel to_rgb();
public bool equals(ref HSVAnalyticPixel rhs) {
return ((hue == rhs.hue) && (saturation == rhs.saturation) &&
@@ -212,7 +108,8 @@ public struct HSVAnalyticPixel {
public enum CompositionMode {
NONE,
- RGB_MATRIX
+ RGB_MATRIX,
+ HSV_LOOKUP
}
public enum PixelFormat {
@@ -369,16 +266,21 @@ public class PixelTransformationBundle {
public abstract class PixelTransformation {
private PixelTransformationType type;
+ private PixelFormat preferred_format;
- public PixelTransformation(PixelTransformationType type) {
+ public PixelTransformation(PixelTransformationType type,
+ PixelFormat preferred_format) {
this.type = type;
+ this.preferred_format = preferred_format;
}
public PixelTransformationType get_transformation_type() {
return type;
}
- public abstract PixelFormat get_preferred_format();
+ public PixelFormat get_preferred_format() {
+ return this.preferred_format;
+ }
public virtual CompositionMode get_composition_mode() {
return CompositionMode.NONE;
@@ -418,7 +320,7 @@ public class RGBTransformation : PixelTransformation {
protected bool identity = true;
public RGBTransformation(PixelTransformationType type) {
- base(type);
+ base(type, PixelFormat.RGB);
// Can't initialize these in their member declarations because of a valac bug that
// I've been unable to produce a minimal test case for to report (JN). May be
@@ -431,10 +333,6 @@ public class RGBTransformation : PixelTransformation {
0.0f, 0.0f, 0.0f, 1.0f };
}
- public override PixelFormat get_preferred_format() {
- return PixelFormat.RGB;
- }
-
public override CompositionMode get_composition_mode() {
return CompositionMode.RGB_MATRIX;
}
@@ -558,27 +456,7 @@ public class RGBTransformation : PixelTransformation {
return (transform_pixel_rgb(p.to_rgb())).to_hsv();
}
- public override RGBAnalyticPixel transform_pixel_rgb(RGBAnalyticPixel p) {
- float red_out = (p.red * matrix_entries[0]) +
- (p.green * matrix_entries[1]) +
- (p.blue * matrix_entries[2]) +
- matrix_entries[3];
- red_out = red_out.clamp(0.0f, 1.0f);
-
- float green_out = (p.red * matrix_entries[4]) +
- (p.green * matrix_entries[5]) +
- (p.blue * matrix_entries[6]) +
- matrix_entries[7];
- green_out = green_out.clamp(0.0f, 1.0f);
-
- float blue_out = (p.red * matrix_entries[8]) +
- (p.green * matrix_entries[9]) +
- (p.blue * matrix_entries[10]) +
- matrix_entries[11];
- blue_out = blue_out.clamp(0.0f, 1.0f);
-
- return RGBAnalyticPixel.from_components(red_out, green_out, blue_out);
- }
+ public extern override RGBAnalyticPixel transform_pixel_rgb(RGBAnalyticPixel p);
public override bool is_identity() {
return identity;
@@ -596,17 +474,46 @@ public class RGBTransformation : PixelTransformation {
}
public abstract class HSVTransformation : PixelTransformation {
+ protected float remap_table[256];
+
public HSVTransformation(PixelTransformationType type) {
- base(type);
+ base(type, PixelFormat.HSV);
}
-
- public override PixelFormat get_preferred_format() {
- return PixelFormat.HSV;
+
+ public override CompositionMode get_composition_mode() {
+ return CompositionMode.HSV_LOOKUP;
}
public override RGBAnalyticPixel transform_pixel_rgb(RGBAnalyticPixel p) {
return (transform_pixel_hsv(p.to_hsv())).to_rgb();
}
+
+ public override void compose_with(PixelTransformation other) {
+ if (other.get_composition_mode() != CompositionMode.HSV_LOOKUP) {
+ error("HSVTransformation: compose_with(): wrong");
+ }
+
+ var hsv_trans = (HSVTransformation) other;
+
+ // We can do this because ALL HSV transformations actually only
+ // operate on the light_value
+ for (var i = 0; i < 256; i++) {
+ var idx = (int) (this.remap_table[i] * 255.0f);
+ this.remap_table[i] = hsv_trans.remap_table[idx].clamp (0.0f, 1.0f);
+ }
+ }
+
+ public override HSVAnalyticPixel transform_pixel_hsv(HSVAnalyticPixel pixel) {
+ int remap_index = (int)(pixel.light_value * 255.0f);
+
+ HSVAnalyticPixel result = pixel;
+ result.light_value = remap_table[remap_index];
+
+ result.light_value = result.light_value.clamp(0.0f, 1.0f);
+
+ return result;
+ }
+
}
public class TintTransformation : RGBTransformation {
@@ -775,9 +682,9 @@ public class ContrastTransformation : RGBTransformation {
public class PixelTransformer {
private Gee.ArrayList<PixelTransformation> transformations =
new Gee.ArrayList<PixelTransformation>();
- private PixelTransformation[] optimized_transformations = null;
- private int optimized_slots_used = 0;
-
+ public PixelTransformation[] optimized_transformations = null;
+ public int optimized_slots_used = 0;
+
public PixelTransformer() {
}
@@ -817,33 +724,7 @@ public class PixelTransformer {
}
}
- private RGBAnalyticPixel apply_transformations(RGBAnalyticPixel p) {
- PixelFormat current_format = PixelFormat.RGB;
- RGBAnalyticPixel p_rgb = p;
- HSVAnalyticPixel p_hsv = HSVAnalyticPixel();
-
- for (int i = 0; i < optimized_slots_used; i++) {
- PixelTransformation trans = optimized_transformations[i];
- if (trans.get_preferred_format() == PixelFormat.RGB) {
- if (current_format == PixelFormat.HSV) {
- p_rgb = p_hsv.to_rgb();
- current_format = PixelFormat.RGB;
- }
- p_rgb = trans.transform_pixel_rgb(p_rgb);
- } else {
- if (current_format == PixelFormat.RGB) {
- p_hsv = p_rgb.to_hsv();
- current_format = PixelFormat.HSV;
- }
- p_hsv = trans.transform_pixel_hsv(p_hsv);
- }
- }
-
- if (current_format == PixelFormat.HSV)
- p_rgb = p_hsv.to_rgb();
-
- return p_rgb;
- }
+ private extern RGBAnalyticPixel apply_transformations(RGBAnalyticPixel p);
/* NOTE: this method allows the same transformation to be added multiple
times. There's nothing wrong with this behavior as of today,
@@ -889,31 +770,52 @@ public class PixelTransformer {
int dest_num_channels = dest.get_n_channels();
int dest_rowstride = dest.get_rowstride();
unowned uchar[] dest_pixels = dest.get_pixels();
-
- int cache_pixel_ticker = 0;
- for (int j = 0; j < dest_height; j++) {
- int row_start_index = j * dest_rowstride;
- int row_end_index = row_start_index + (dest_width * dest_num_channels);
- for (int i = row_start_index; i < row_end_index; i += dest_num_channels) {
- RGBAnalyticPixel pixel = RGBAnalyticPixel.from_components(
- fp_pixel_cache[cache_pixel_ticker],
- fp_pixel_cache[cache_pixel_ticker + 1],
- fp_pixel_cache[cache_pixel_ticker + 2]);
+ var jobs = (int) GLib.get_num_processors() - 1;
- cache_pixel_ticker += 3;
+ uint slice_length = dest_height;
+ if (jobs > 0) {
+ slice_length = (dest_height + (jobs - 1)) / jobs;
+ }
- pixel = apply_transformations(pixel);
+ var threads = new GLib.Thread<void *>[jobs];
+
+ unowned float[] cache = fp_pixel_cache;
+ for (var job = 0; job < jobs; job++) {
+ var row = job * slice_length;
+ var slice_height = (row + slice_length).clamp(0, dest_height);
+ threads[job] = new GLib.Thread<void*>("shotwell-worker", () => {
+ uint cache_pixel_ticker = row * dest_width * 3;
+ for (uint j = row; j < slice_height; j++) {
+ uint row_start_index = j * dest_rowstride;
+ uint row_end_index = row_start_index + (dest_width * dest_num_channels);
+ for (uint i = row_start_index; i < row_end_index; i += dest_num_channels) {
+ RGBAnalyticPixel pixel = RGBAnalyticPixel.from_components(
+ cache[cache_pixel_ticker],
+ cache[cache_pixel_ticker + 1],
+ cache[cache_pixel_ticker + 2]);
+
+ cache_pixel_ticker += 3;
+
+ pixel = apply_transformations(pixel);
+
+ dest_pixels[i] = (uchar) (pixel.red * 255.0f);
+ dest_pixels[i + 1] = (uchar) (pixel.green * 255.0f);
+ dest_pixels[i + 2] = (uchar) (pixel.blue * 255.0f);
+ }
+ }
- dest_pixels[i] = (uchar) (pixel.red * 255.0f);
- dest_pixels[i + 1] = (uchar) (pixel.green * 255.0f);
- dest_pixels[i + 2] = (uchar) (pixel.blue * 255.0f);
- }
+ return null;
+ });
+ }
+
+ foreach (var thread in threads) {
+ thread.join();
}
}
public void transform_to_other_pixbuf(Gdk.Pixbuf source, Gdk.Pixbuf dest,
- Cancellable? cancellable = null) {
+ Cancellable? cancellable = null, int jobs = -1) {
if (source.width != dest.width)
error("PixelTransformer: source and destination pixbufs must have the same width");
@@ -934,28 +836,50 @@ public class PixelTransformer {
int rowbytes = n_channels * width;
unowned uchar[] source_pixels = source.get_pixels();
unowned uchar[] dest_pixels = dest.get_pixels();
- for (int j = 0; j < height; j++) {
- int row_start_index = j * rowstride;
- int row_end_index = row_start_index + rowbytes;
- for (int i = row_start_index; i < row_end_index; i += n_channels) {
- RGBAnalyticPixel current_pixel = RGBAnalyticPixel.from_quantized_components(
- source_pixels[i], source_pixels[i + 1], source_pixels[i + 2]);
+ if (jobs == -1) {
+ jobs = (int) GLib.get_num_processors() - 1;
+ }
- current_pixel = apply_transformations(current_pixel);
+ uint slice_length = height;
+ if (jobs > 0) {
+ slice_length = (height + (jobs - 1)) / jobs;
+ }
- dest_pixels[i] = current_pixel.quantized_red();
- dest_pixels[i + 1] = current_pixel.quantized_green();
- dest_pixels[i + 2] = current_pixel.quantized_blue();
- }
+ var threads = new GLib.Thread<void*>[jobs];
- if ((cancellable != null) && (cancellable.is_cancelled())) {
- return;
- }
+ for (var job = 0; job < jobs; job++) {
+ var row = job * slice_length;
+ var slice_height = (row + slice_length).clamp(0, height);
+
+ threads[job] = new GLib.Thread<void*>("shotwell-worker", () => {
+ for (var j = row; j < slice_height; j++) {
+ this.apply_transformation(j, rowstride, rowbytes, n_channels, source_pixels,
+ dest_pixels);
+
+ if ((cancellable != null) && (cancellable.is_cancelled())) {
+ break;
+ }
+ }
+
+ return null;
+ });
+ }
+
+ foreach (var thread in threads) {
+ thread.join();
}
}
+
+ private extern void apply_transformation(uint row,
+ int rowstride,
+ int rowbytes,
+ int n_channels,
+ uchar[] source_pixels,
+ uchar[] dest_pixels);
+
}
-class RGBHistogram {
+public class RGBHistogram {
private const uchar MARKED_BACKGROUND = 30;
private const uchar MARKED_FOREGROUND = 210;
private const uchar UNMARKED_BACKGROUND = 120;
@@ -1253,7 +1177,6 @@ public class IntensityHistogram {
}
public class ExpansionTransformation : HSVTransformation {
- private float[] remap_table = null;
private const float LOW_DISCARD_MASS = 0.02f;
private const float HIGH_DISCARD_MASS = 0.02f;
@@ -1263,8 +1186,6 @@ public class ExpansionTransformation : HSVTransformation {
public ExpansionTransformation(IntensityHistogram histogram) {
base(PixelTransformationType.TONE_EXPANSION);
- remap_table = new float[256];
-
float LOW_KINK_MASS = LOW_DISCARD_MASS;
low_kink = 0;
while (histogram.get_cumulative_probability(low_kink) < LOW_KINK_MASS)
@@ -1315,9 +1236,6 @@ public class ExpansionTransformation : HSVTransformation {
}
private void build_remap_table() {
- if (remap_table == null)
- remap_table = new float[256];
-
float low_kink_f = ((float) low_kink) / 255.0f;
float high_kink_f = ((float) high_kink) / 255.0f;
@@ -1335,17 +1253,6 @@ public class ExpansionTransformation : HSVTransformation {
remap_table[i] = 1.0f;
}
- public override HSVAnalyticPixel transform_pixel_hsv(HSVAnalyticPixel pixel) {
- int remap_index = (int)(pixel.light_value * 255.0f);
-
- HSVAnalyticPixel result = pixel;
- result.light_value = remap_table[remap_index];
-
- result.light_value = result.light_value.clamp(0.0f, 1.0f);
-
- return result;
- }
-
public override string to_string() {
return "{ %d, %d }".printf(low_kink, high_kink);
}
@@ -1374,7 +1281,6 @@ public class ShadowDetailTransformation : HSVTransformation {
private const float TONAL_WIDTH = 1.0f;
private float intensity = 0.0f;
- private float[] remap_table = null;
public const float MIN_PARAMETER = 0.0f;
public const float MAX_PARAMETER = 32.0f;
@@ -1389,7 +1295,6 @@ public class ShadowDetailTransformation : HSVTransformation {
HermiteGammaApproximationFunction func =
new HermiteGammaApproximationFunction(TONAL_WIDTH);
- remap_table = new float[256];
for (int i = 0; i < 256; i++) {
float x = ((float) i) / 255.0f;
float weight = func.evaluate(x);
@@ -1397,12 +1302,6 @@ public class ShadowDetailTransformation : HSVTransformation {
}
}
- public override HSVAnalyticPixel transform_pixel_hsv(HSVAnalyticPixel pixel) {
- HSVAnalyticPixel result = pixel;
- result.light_value = (remap_table[(int)(pixel.light_value * 255.0f)]).clamp(0.0f, 1.0f);
- return result;
- }
-
public override PixelTransformation copy() {
return new ShadowDetailTransformation(intensity);
}
@@ -1448,7 +1347,6 @@ public class HighlightDetailTransformation : HSVTransformation {
private const float TONAL_WIDTH = 1.0f;
private float intensity = 0.0f;
- private float[] remap_table = null;
public const float MIN_PARAMETER = -32.0f;
public const float MAX_PARAMETER = 0.0f;
@@ -1463,7 +1361,6 @@ public class HighlightDetailTransformation : HSVTransformation {
HermiteGammaApproximationFunction func =
new HermiteGammaApproximationFunction(TONAL_WIDTH);
- remap_table = new float[256];
for (int i = 0; i < 256; i++) {
float x = ((float) i) / 255.0f;
float weight = func.evaluate(1.0f - x);
@@ -1471,12 +1368,6 @@ public class HighlightDetailTransformation : HSVTransformation {
}
}
- public override HSVAnalyticPixel transform_pixel_hsv(HSVAnalyticPixel pixel) {
- HSVAnalyticPixel result = pixel;
- result.light_value = (remap_table[(int)(pixel.light_value * 255.0f)]).clamp(0.0f, 1.0f);
- return result;
- }
-
public override PixelTransformation copy() {
return new HighlightDetailTransformation(intensity);
}
@@ -1562,3 +1453,57 @@ public PixelTransformationBundle create_auto_enhance_adjustments(Gdk.Pixbuf pixb
}
}
+public const float rgb_lookup_table[] = {
+ 0.0f/255.0f, 1.0f/255.0f, 2.0f/255.0f, 3.0f/255.0f, 4.0f/255.0f,
+ 5.0f/255.0f, 6.0f/255.0f, 7.0f/255.0f, 8.0f/255.0f, 9.0f/255.0f,
+ 10.0f/255.0f, 11.0f/255.0f, 12.0f/255.0f, 13.0f/255.0f, 14.0f/255.0f,
+ 15.0f/255.0f, 16.0f/255.0f, 17.0f/255.0f, 18.0f/255.0f, 19.0f/255.0f,
+ 20.0f/255.0f, 21.0f/255.0f, 22.0f/255.0f, 23.0f/255.0f, 24.0f/255.0f,
+ 25.0f/255.0f, 26.0f/255.0f, 27.0f/255.0f, 28.0f/255.0f, 29.0f/255.0f,
+ 30.0f/255.0f, 31.0f/255.0f, 32.0f/255.0f, 33.0f/255.0f, 34.0f/255.0f,
+ 35.0f/255.0f, 36.0f/255.0f, 37.0f/255.0f, 38.0f/255.0f, 39.0f/255.0f,
+ 40.0f/255.0f, 41.0f/255.0f, 42.0f/255.0f, 43.0f/255.0f, 44.0f/255.0f,
+ 45.0f/255.0f, 46.0f/255.0f, 47.0f/255.0f, 48.0f/255.0f, 49.0f/255.0f,
+ 50.0f/255.0f, 51.0f/255.0f, 52.0f/255.0f, 53.0f/255.0f, 54.0f/255.0f,
+ 55.0f/255.0f, 56.0f/255.0f, 57.0f/255.0f, 58.0f/255.0f, 59.0f/255.0f,
+ 60.0f/255.0f, 61.0f/255.0f, 62.0f/255.0f, 63.0f/255.0f, 64.0f/255.0f,
+ 65.0f/255.0f, 66.0f/255.0f, 67.0f/255.0f, 68.0f/255.0f, 69.0f/255.0f,
+ 70.0f/255.0f, 71.0f/255.0f, 72.0f/255.0f, 73.0f/255.0f, 74.0f/255.0f,
+ 75.0f/255.0f, 76.0f/255.0f, 77.0f/255.0f, 78.0f/255.0f, 79.0f/255.0f,
+ 80.0f/255.0f, 81.0f/255.0f, 82.0f/255.0f, 83.0f/255.0f, 84.0f/255.0f,
+ 85.0f/255.0f, 86.0f/255.0f, 87.0f/255.0f, 88.0f/255.0f, 89.0f/255.0f,
+ 90.0f/255.0f, 91.0f/255.0f, 92.0f/255.0f, 93.0f/255.0f, 94.0f/255.0f,
+ 95.0f/255.0f, 96.0f/255.0f, 97.0f/255.0f, 98.0f/255.0f, 99.0f/255.0f,
+ 100.0f/255.0f, 101.0f/255.0f, 102.0f/255.0f, 103.0f/255.0f, 104.0f/255.0f,
+ 105.0f/255.0f, 106.0f/255.0f, 107.0f/255.0f, 108.0f/255.0f, 109.0f/255.0f,
+ 110.0f/255.0f, 111.0f/255.0f, 112.0f/255.0f, 113.0f/255.0f, 114.0f/255.0f,
+ 115.0f/255.0f, 116.0f/255.0f, 117.0f/255.0f, 118.0f/255.0f, 119.0f/255.0f,
+ 120.0f/255.0f, 121.0f/255.0f, 122.0f/255.0f, 123.0f/255.0f, 124.0f/255.0f,
+ 125.0f/255.0f, 126.0f/255.0f, 127.0f/255.0f, 128.0f/255.0f, 129.0f/255.0f,
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+ 240.0f/255.0f, 241.0f/255.0f, 242.0f/255.0f, 243.0f/255.0f, 244.0f/255.0f,
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+ 250.0f/255.0f, 251.0f/255.0f, 252.0f/255.0f, 253.0f/255.0f, 254.0f/255.0f,
+ 255.0f/255.0f,
+};
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-25 07:36:43 +0000