#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA)
#define PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA)
+#define PNG_FILTER_TYPE_LOCO 64
#define PNG_FILTER_VALUE_NONE 0
#define PNG_FILTER_VALUE_SUB 1
#define PNG_FILTER_VALUE_UP 2
#define PNG_FILTER_VALUE_AVG 3
#define PNG_FILTER_VALUE_PAETH 4
+#define PNG_FILTER_VALUE_MIXED 5
#define PNG_IHDR 0x0001
#define PNG_IDAT 0x0002
#define NB_PASSES 7
extern const uint8_t ff_pngsig[8];
+extern const uint8_t ff_mngsig[8];
/* Mask to determine which y pixels are valid in a pass */
extern const uint8_t ff_png_pass_ymask[NB_PASSES];