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-rw-r--r--public/fpdf_edit.h45
1 files changed, 45 insertions, 0 deletions
diff --git a/public/fpdf_edit.h b/public/fpdf_edit.h
index f75744599f..c547f07890 100644
--- a/public/fpdf_edit.h
+++ b/public/fpdf_edit.h
@@ -20,6 +20,20 @@
#define FPDF_GetRValue(argb) ((uint8_t)((argb) >> 16))
#define FPDF_GetAValue(argb) ((uint8_t)((argb) >> 24))
+// Refer to PDF Reference version 1.7 table 4.12 for all color space families.
+#define FPDF_COLORSPACE_UNKNOWN 0
+#define FPDF_COLORSPACE_DEVICEGRAY 1
+#define FPDF_COLORSPACE_DEVICERGB 2
+#define FPDF_COLORSPACE_DEVICECMYK 3
+#define FPDF_COLORSPACE_CALGRAY 4
+#define FPDF_COLORSPACE_CALRGB 5
+#define FPDF_COLORSPACE_LAB 6
+#define FPDF_COLORSPACE_ICCBASED 7
+#define FPDF_COLORSPACE_SEPARATION 8
+#define FPDF_COLORSPACE_DEVICEN 9
+#define FPDF_COLORSPACE_INDEXED 10
+#define FPDF_COLORSPACE_PATTERN 11
+
// The page object constants.
#define FPDF_PAGEOBJ_UNKNOWN 0
#define FPDF_PAGEOBJ_TEXT 1
@@ -47,6 +61,21 @@
#define FPDF_PRINTMODE_POSTSCRIPT2 2
#define FPDF_PRINTMODE_POSTSCRIPT3 3
+typedef struct FPDF_IMAGEOBJ_METADATA {
+ // The image width in pixels.
+ unsigned int width;
+ // The image height in pixels.
+ unsigned int height;
+ // The image's horizontal pixel-per-inch.
+ float horizontal_dpi;
+ // The image's vertical pixel-per-inch.
+ float vertical_dpi;
+ // The number of bits used to represent each pixel.
+ unsigned int bits_per_pixel;
+ // The image's colorspace. See above for the list of FPDF_COLORSPACE_*.
+ int colorspace;
+} FPDF_IMAGEOBJ_METADATA;
+
#ifdef __cplusplus
extern "C" {
#endif // __cplusplus
@@ -366,6 +395,22 @@ FPDFImageObj_GetImageFilter(FPDF_PAGEOBJECT image_object,
void* buffer,
unsigned long buflen);
+// Get the image metadata of |image_object|, including dimension, DPI, bits per
+// pixel, and colorspace. If the |image_object| is not an image object or if it
+// does not have an image, then the return value will be false. Otherwise,
+// failure to retrieve any specific parameter would result in its value being 0.
+//
+// image_object - handle to an image object.
+// page - handle to the page that |image_object| is on. Required for
+// retrieving the image's bits per pixel and colorspace.
+// metadata - receives the image metadata; must not be NULL.
+//
+// Returns true if successful.
+FPDF_EXPORT FPDF_BOOL FPDF_CALLCONV
+FPDFImageObj_GetImageMetadata(FPDF_PAGEOBJECT image_object,
+ FPDF_PAGE page,
+ FPDF_IMAGEOBJ_METADATA* metadata);
+
// Create a new path object at an initial position.
//
// x - initial horizontal position.