Add accessor methods for PNG data

1 files changed, 21 insertions, 5 deletions

diff --git a/lisiblepng/src/lisiblepng.h b/lisiblepng/src/lisiblepng.h
index 86a8364..a23ac91 100644
--- a/lisiblepng/src/lisiblepng.h
+++ b/lisiblepng/src/lisiblepng.h
@@ -1,10 +1,21 @@
 #ifndef LISIBLE_PNG_H
 #define LISIBLE_PNG_H
 
+#include <stdint.h>
 #include <stdio.h>
 
-struct Png;
-typedef struct Png Png;
+typedef enum {
+  LisPngColourType_Greyscale = 0,
+  LisPngColourType_Truecolour = 2,
+  LisPngColourType_IndexedColour = 3,
+  LisPngColourType_GreyscaleWithAlpha = 4,
+  LisPngColourType_TruecolourWithAlpha = 6,
+  LisPngColourType_Unknown
+} LisPngColourType;
+uint8_t LisPngColourType_sample_count(const LisPngColourType colour_type);
+
+struct LisPng;
+typedef struct LisPng LisPng;
 
 /// Parses the provided PNG stream
 ///
@@ -12,12 +23,17 @@ typedef struct Png Png;
 /// @returns The parsed PNG as a Png struct pointer or NULL if an error occured.
 /// The returned PNG is owned by the caller and must be destroyed with
 /// Png_destroy.
-Png *lis_Png_decode(FILE *stream);
+LisPng *LisPng_decode(FILE *stream);
 /// Outputs the provided Png struct as a PPM image to stdout
 ///
 /// @param png The png
-void lis_Png_dump_ppm(const Png *png);
+void LisPng_dump_ppm(const LisPng *png);
+LisPngColourType LisPng_colour_type(const LisPng *png);
+uint8_t LisPng_bits_per_sample(const LisPng *png);
+uint8_t *LisPng_data_ptr(const LisPng *png);
+uint32_t LisPng_width(const LisPng *png);
+uint32_t LisPng_height(const LisPng *png);
 /// Destroys a Png instance
-void lis_Png_destroy(Png *png);
+void LisPng_destroy(LisPng *png);
 
 #endif // LISIBLE_PNG_H