Now puts the EXIF data verbatim into the message passed to Translate().

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20626 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/add-ons/translators/raw/RAW.cpp

@@ -109,7 +109,8 @@ DCRaw::DCRaw(BPositionIO& stream)
 	fOutputBitsPerSample(8),
 	fDecodeLeaf(0),
 	fDecodeBitsZeroAfterMax(false),
-	fFilters(~0)
+	fFilters(~0),
+	fEXIFOffset(-1)
 {
 	fImages = new image_data_info[kImageBufferCount];
 	fDecodeBuffer = new decode[kDecodeBufferCount];
@@ -2792,6 +2793,10 @@ DCRaw::_ParseTIFFImageFileDirectory(off_t baseOffset, uint32 offset)
 
 			case 34665:	// EXIF tag
 				fRead.Seek(fRead.Next<uint32>() + baseOffset, SEEK_SET);
+
+				fEXIFOffset = fRead.Position();
+				fEXIFLength = tag.length;
+
 				_ParseEXIF(baseOffset);
 				break;
 
@@ -3353,3 +3358,15 @@ DCRaw::ImageAt(uint32 index, image_data_info& info) const
 	return B_OK;
 }
 
+
+status_t
+DCRaw::GetEXIFTag(off_t& offset, size_t& length) const
+{
+	if (fEXIFOffset < 0)
+		return B_ENTRY_NOT_FOUND;
+
+	offset = fEXIFOffset;
+	length = fEXIFLength;
+	return B_OK;
+}
+

src/add-ons/translators/raw/RAW.h

@@ -63,6 +63,8 @@ class DCRaw {
 		uint32 CountImages() const;
 		status_t ImageAt(uint32 index, image_data_info& info) const;
 
+		status_t GetEXIFTag(off_t& offset, size_t& length) const;
+
 	private:
 		int32 _AllocateImage();
 		image_data_info& _Raw();
@@ -178,6 +180,8 @@ class DCRaw {
 
 		uint32		fFilters;
 		uint32		fEXIFFilters;
+		off_t		fEXIFOffset;
+		uint32		fEXIFLength;
 
 		off_t		fCurveOffset;
 };

src/add-ons/translators/raw/RAWTranslator.cpp

@@ -189,6 +189,19 @@ RAWTranslator::DerivedTranslate(BPositionIO* source,
 		return roster->Translate(&io, NULL, settings, target, outType);
 	}
 
+	// retrieve EXIF data
+	off_t exifOffset;
+	size_t exifLength;
+	if (settings != NULL && raw.GetEXIFTag(exifOffset, exifLength) == B_OK) {
+		void* exifBuffer = malloc(exifLength);
+		if (exifBuffer != NULL) {
+			if (source->ReadAt(exifOffset, exifBuffer, exifLength)
+					== (ssize_t)exifLength)
+				settings->AddData("exif", B_RAW_TYPE, exifBuffer, exifLength);
+
+			free(exifBuffer);
+		}
+	}
 	uint32 dataSize = data.output_width * 4 * data.output_height;
 
 	TranslatorBitmap header;