From 925140af2adcf837185940fecb065908a94ee6c5 Mon Sep 17 00:00:00 2001
From: Javier Celaya <jcelaya@gmail.com>
Date: Mon, 9 Jun 2014 18:36:01 +0100
Subject: [PATCH] Keep v0.4.4 compatible with current state of RawTherapee

- Subtract blacks from the output image to keep it compatible with the current state of RawTherapee. This won't work with every camera.
---
 DngFloatWriter.cpp | 41 ++++++-----------------------------------
 ImageIO.cpp        |  2 +-
 ImageStack.cpp     |  6 ++----
 3 files changed, 9 insertions(+), 40 deletions(-)

diff --git a/DngFloatWriter.cpp b/DngFloatWriter.cpp
index 1b08f0a..bb252d8 100644
--- a/DngFloatWriter.cpp
+++ b/DngFloatWriter.cpp
@@ -102,14 +102,9 @@ enum {
 void DngFloatWriter::write(Array2D<float> && rawPixels, const RawParameters & p, const string & filename) {
     params = &p;
     rawData = std::move(rawPixels);
-    width = rawData.getWidth();
-    height = rawData.getHeight();
-
-    // FIXME: This is temporal, until I fix RawTherapee
     width = params->width;
     height = params->height;
     rawData.displace(-(int)params->leftMargin, -(int)params->topMargin);
-    // FIXME: END
 
     renderPreviews();
 
@@ -235,38 +230,14 @@ void DngFloatWriter::createRawIFD() {
 
     // Areas
     uint32_t aa[4];
-    aa[0] = params->topMargin;
-    aa[1] = params->leftMargin;
-    // FIXME: This is temporal, until I fix RawTherapee
     aa[0] = aa[1] = 0;
-    // FIXME: END
-    aa[2] = aa[0] + params->height;
-    aa[3] = aa[1] + params->width;
+    aa[2] = params->height;
+    aa[3] = params->width;
     rawIFD.addEntry(ACTIVEAREA, IFD::LONG, 4, aa);
-    uint32_t ma[16];
-    int nma = 0;
-    if (aa[0] > 0) {
-        ma[nma] = 0; ma[nma + 1] = 0; ma[nma + 2] = aa[0]; ma[nma + 3] = width; nma += 4;
-    }
-    if (aa[1] > 0) {
-        ma[nma] = aa[0]; ma[nma + 1] = 0; ma[nma + 2] = aa[2]; ma[nma + 3] = aa[1]; nma += 4;
-    }
-    if (aa[2] < height) {
-        ma[nma] = aa[2]; ma[nma + 1] = 0; ma[nma + 2] = height; ma[nma + 3] = width; nma += 4;
-    }
-    if (aa[3] < width) {
-        ma[nma] = aa[0]; ma[nma + 1] = aa[3]; ma[nma + 2] = aa[2]; ma[nma + 3] = width; nma += 4;
-    }
-    if (nma > 0) {
-        rawIFD.addEntry(MASKEDAREAS, IFD::LONG, nma, ma);
-    } else {
-        // If there are no masked areas, black levels must be encoded, but not both.
-        uint16_t brep[2] = { 2, 2 };
-        rawIFD.addEntry(BLACKLEVELREP, IFD::SHORT, 2, brep);
-        uint16_t cblack[] = { params->blackAt(0, 0), params->blackAt(1, 0),
-                              params->blackAt(0, 1), params->blackAt(1, 1) };
-        rawIFD.addEntry(BLACKLEVEL, IFD::SHORT, 4, cblack);
-    }
+    uint16_t brep[2] = { 2, 2 };
+    rawIFD.addEntry(BLACKLEVELREP, IFD::SHORT, 2, brep);
+    uint16_t cblack[] = { 0, 0, 0, 0 };
+    rawIFD.addEntry(BLACKLEVEL, IFD::SHORT, 4, cblack);
     uint32_t crop[2];
     crop[0] = 0;
     crop[1] = 0;
diff --git a/ImageIO.cpp b/ImageIO.cpp
index 917ab81..0d0f16f 100644
--- a/ImageIO.cpp
+++ b/ImageIO.cpp
@@ -200,7 +200,7 @@ QImage ImageIO::renderPreview(const Array2D<float> & rawData, const RawParameter
         for (size_t y = 0; y < params.rawHeight; ++y) {
             for (size_t x = 0; x < params.rawWidth; ++x) {
                 size_t pos = y*params.rawWidth + x;
-                int v = (rawData[pos] - params.blackAt(x ^ oddx, y ^ oddy)) * scale;
+                int v = rawData[pos] * scale;
                 if (v < 0) v = 0;
                 else if (v > 65535) v = 65535;
                 d.rawdata.raw_image[pos] = v;
diff --git a/ImageStack.cpp b/ImageStack.cpp
index 2121e2f..a536df3 100644
--- a/ImageStack.cpp
+++ b/ImageStack.cpp
@@ -164,12 +164,10 @@ Array2D<float> ImageStack::compose(const RawParameters & params) const {
         }
     }
     dst.displace(params.leftMargin, params.topMargin);
-    // Scale to params.max and recover the black levels
-    size_t oddx = params.leftMargin & 1, oddy = params.topMargin + 1;
+    // Scale to params.max
     for (size_t y = 0; y < params.rawHeight; ++y) {
         for (size_t x = 0; x < params.rawWidth; ++x) {
-            dst(x, y) *= (params.max - params.maxBlack) / max;
-            dst(x, y) += params.blackAt(x ^ oddx, y ^ oddy);
+            dst(x, y) *= params.max / max;
         }
     }