Add compression modes for TIFF images

This patch aims at providing multiple compression modes for TIFF output,
particularly uncompressed mode.

At this moment  have None, Deflate, LZW and Pack Bits modes been integrated,
mimicking The GIMP export modes (except JPEG mode, which returned encoding
errors).

More modes could be added if needed.

Default remains Deflate.

Reviewers: campbellbarton, mont29, sergey

Differential Revision: https://developer.blender.org/D1709

source/blender/blenkernel/intern/image.c

@@ -1623,6 +1623,14 @@ void BKE_imbuf_to_image_format(struct ImageFormatData *im_format, const ImBuf *i
 		im_format->imtype = R_IMF_IMTYPE_TIFF;
 		if (custom_flags & TIF_16BIT)
 			im_format->depth = R_IMF_CHAN_DEPTH_16;
+		if (custom_flags & TIF_COMPRESS_NONE)
+			im_format->tiff_codec = R_IMF_TIFF_CODEC_NONE;
+		if (custom_flags & TIF_COMPRESS_DEFLATE)
+			im_format->tiff_codec = R_IMF_TIFF_CODEC_DEFLATE;
+		if (custom_flags & TIF_COMPRESS_LZW)
+			im_format->tiff_codec = R_IMF_TIFF_CODEC_LZW;
+		if (custom_flags & TIF_COMPRESS_PACKBITS)
+			im_format->tiff_codec = R_IMF_TIFF_CODEC_PACKBITS;
 	}
 #endif
 
@@ -2208,8 +2216,21 @@ void BKE_imbuf_write_prepare(ImBuf *ibuf, const ImageFormatData *imf)
 	else if (imtype == R_IMF_IMTYPE_TIFF) {
 		ibuf->ftype = IMB_FTYPE_TIF;
 
-		if (imf->depth == R_IMF_CHAN_DEPTH_16)
+		if (imf->depth == R_IMF_CHAN_DEPTH_16) {
 			ibuf->foptions.flag |= TIF_16BIT;
+		}
+		if (imf->tiff_codec == R_IMF_TIFF_CODEC_NONE) {
+			ibuf->foptions.flag |= TIF_COMPRESS_NONE;
+		}
+		else if (imf->tiff_codec== R_IMF_TIFF_CODEC_DEFLATE) {
+			ibuf->foptions.flag |= TIF_COMPRESS_DEFLATE;
+		}
+		else if (imf->tiff_codec == R_IMF_TIFF_CODEC_LZW) {
+			ibuf->foptions.flag |= TIF_COMPRESS_LZW;
+		}
+		else if (imf->tiff_codec == R_IMF_TIFF_CODEC_PACKBITS) {
+			ibuf->foptions.flag |= TIF_COMPRESS_PACKBITS;
+		}
 	}
 #endif
 #ifdef WITH_OPENEXR

source/blender/editors/space_image/image_buttons.c

@@ -1126,6 +1126,10 @@ void uiTemplateImageSettings(uiLayout *layout, PointerRNA *imfptr, int color_man
 #endif
 	}
 
+	if (imf->imtype == R_IMF_IMTYPE_TIFF) {
+		uiItemR(col, imfptr, "tiff_codec", 0, NULL, ICON_NONE);
+	}
+
 	/* color management */
 	if (color_management &&
 	    (!BKE_imtype_requires_linear_float(imf->imtype) ||

source/blender/imbuf/IMB_imbuf_types.h

@@ -127,7 +127,11 @@ enum eImbTypes {
 #define RAWTGA	        1
 
 #ifdef WITH_TIFF
-#define TIF_16BIT		(1 << 8 )
+#define TIF_16BIT			(1 << 8)
+#define TIF_COMPRESS_NONE		(1 << 7)
+#define TIF_COMPRESS_DEFLATE		(1 << 6)
+#define TIF_COMPRESS_LZW		(1 << 5)
+#define TIF_COMPRESS_PACKBITS		(1 << 4)
 #endif
 
 typedef struct ImbFormatOptions {

source/blender/imbuf/intern/tiff.c

@@ -708,6 +708,7 @@ int imb_savetiff(ImBuf *ibuf, const char *name, int flags)
 	float *fromf = NULL;
 	float xres, yres;
 	int x, y, from_i, to_i, i;
+	int compress_mode = COMPRESSION_NONE;
 
 	/* check for a valid number of bytes per pixel.  Like the PNG writer,
 	 * the TIFF writer supports 1, 3 or 4 bytes per pixel, corresponding
@@ -725,6 +726,13 @@ int imb_savetiff(ImBuf *ibuf, const char *name, int flags)
 	else
 		bitspersample = 8;
 
+	if (ibuf->foptions.flag & TIF_COMPRESS_DEFLATE)
+		compress_mode = COMPRESSION_DEFLATE;
+	else if (ibuf->foptions.flag & TIF_COMPRESS_LZW)
+		compress_mode = COMPRESSION_LZW;
+	else if (ibuf->foptions.flag & TIF_COMPRESS_PACKBITS)
+		compress_mode = COMPRESSION_PACKBITS;
+
 	/* open TIFF file for writing */
 	if (flags & IB_mem) {
 		/* bork at the creation of a TIFF in memory */
@@ -839,7 +847,7 @@ int imb_savetiff(ImBuf *ibuf, const char *name, int flags)
 	TIFFSetField(image, TIFFTAG_IMAGEWIDTH,      ibuf->x);
 	TIFFSetField(image, TIFFTAG_IMAGELENGTH,     ibuf->y);
 	TIFFSetField(image, TIFFTAG_ROWSPERSTRIP,    ibuf->y);
-	TIFFSetField(image, TIFFTAG_COMPRESSION, COMPRESSION_DEFLATE);
+	TIFFSetField(image, TIFFTAG_COMPRESSION, compress_mode);
 	TIFFSetField(image, TIFFTAG_FILLORDER, FILLORDER_MSB2LSB);
 	TIFFSetField(image, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
 

source/blender/makesdna/DNA_scene_types.h

@@ -355,7 +355,10 @@ typedef struct ImageFormatData {
 	char  jp2_flag;
 	char jp2_codec;
 
-	char pad[5];
+	/* TIFF */
+	char tiff_codec;
+
+	char pad[4];
 
 	/* Multiview */
 	char views_format;
@@ -442,6 +445,14 @@ typedef struct ImageFormatData {
 /* ImageFormatData.cineon_flag */
 #define R_IMF_CINEON_FLAG_LOG (1<<0)  /* was R_CINEON_LOG */
 
+/* ImageFormatData.tiff_codec */
+enum {
+	R_IMF_TIFF_CODEC_DEFLATE   = 0,
+	R_IMF_TIFF_CODEC_LZW       = 1,
+	R_IMF_TIFF_CODEC_PACKBITS  = 2,
+	R_IMF_TIFF_CODEC_NONE      = 3,
+};
+
 typedef struct BakeData {
 	struct ImageFormatData im_format;
 

source/blender/makesrna/intern/rna_scene.c

@@ -4580,6 +4580,16 @@ static void rna_def_scene_image_format_data(BlenderRNA *brna)
 	};
 #endif
 
+#ifdef WITH_TIFF
+	static EnumPropertyItem tiff_codec_items[] = {
+		{R_IMF_TIFF_CODEC_NONE, "NONE", 0, "None", ""},
+		{R_IMF_TIFF_CODEC_DEFLATE, "DEFLATE", 0, "Deflate", ""},
+		{R_IMF_TIFF_CODEC_LZW, "LZW", 0, "LZW", ""},
+		{R_IMF_TIFF_CODEC_PACKBITS, "PACKBITS", 0, "Pack Bits", ""},
+		{0, NULL, 0, NULL, NULL}
+	};
+#endif
+
 	StructRNA *srna;
 	PropertyRNA *prop;
 
@@ -4679,6 +4689,15 @@ static void rna_def_scene_image_format_data(BlenderRNA *brna)
 	RNA_def_property_update(prop, NC_SCENE | ND_RENDER_OPTIONS, NULL);
 #endif
 
+#ifdef WITH_TIFF
+	/* TIFF */
+	prop = RNA_def_property(srna, "tiff_codec", PROP_ENUM, PROP_NONE);
+	RNA_def_property_enum_sdna(prop, NULL, "tiff_codec");
+	RNA_def_property_enum_items(prop, tiff_codec_items);
+	RNA_def_property_ui_text(prop, "Compression", "Compression mode for TIFF");
+	RNA_def_property_update(prop, NC_SCENE | ND_RENDER_OPTIONS, NULL);
+#endif
+
 	/* Cineon and DPX */
 
 	prop = RNA_def_property(srna, "use_cineon_log", PROP_BOOLEAN, PROP_NONE);