1 files changed, 72 insertions, 0 deletions

diff --git a/baseline/source/epic/epic.h b/baseline/source/epic/epic.h
new file mode 100644
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+++ b/baseline/source/epic/epic.h
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+#ifndef __EPIC_H_
+#define __EPIC_H_
+
+#define EPIC_VERSION 1.1
+
+/* ============= FUNDAMENTAL LIMITATIONS ============= */
+
+/* Maximum x- or y-size of image */
+#define MAX_IMAGE_DIM 16384
+
+/* Maximum number of pyramid levels (value 3*levs+1 stored in 5 bits).
+   This doesn't need to be larger than log2(MAX_IMAGE_DIM/FILTER_SIZE). */
+#define MAX_LEVELS 10
+
+/* Maximum number of quantization bins.  This essentially determines
+   the maximum depth image to be represented. */
+#define MAX_BINS 511
+
+/* ============= SECONDARY (derived) LIMITATIONS ============= */
+
+/* This number determines the precision of the stored binsizes:
+   stored coefficients are accurate to +/- (1/SCALE_FACTOR).
+   On the other hand, this number also will limit the maximum amount
+   of compression.
+   It should not be more than [2^(8*sizeof(BinValueType))]/256. */
+#define SCALE_FACTOR 128
+
+/* This number must be consistent with the filters that are
+   hardwired into epic.c */
+#define FILTER_SIZE 15
+
+/* Log (base 2) of MAX_IMAGE_DIM^2: (bits required to store the dimensions) */
+#define LOG_MAX_IMAGE_SIZE 32
+
+/* The type of the quantized images. Must be SIGNED, and capable of holding
+   values  in the range [-MAX_BINS, MAX_BINS] */
+typedef short BinIndexType;
+
+/* The type used to represent the binsizes. Should be UNSIGNED. If this is
+   changed, be sure to change the places in epic.c and unepic.c where
+   binsizes are written or read from files.  */
+typedef unsigned short BinValueType;
+
+/* Number of possible values for a symbol.  This must be at least
+   (MAX_BINS * 4)  (one sign bit, one tag bit)... */
+#define NUM_SYMBOL_VALUES 65536
+
+/* Function prototypes. */
+void epic_build_pyr( float *image, int x_size, int y_size, int num_levels,
+                     float *lo_filter, float *hi_filter, int filter_size );
+
+void epic_build_level( float *image, int level_x_size, int level_y_size,
+                       float *lo_filter, float *hi_filter,
+                       int filter_size, float *result_block );
+
+void epic_internal_transpose( register float *mat, int rows,
+                              register int cols );
+
+void epic_reflect1( register float *filt, register int x_dim, int y_dim,
+                    int x_pos, int y_pos, register float *result, int f_or_e );
+
+void epic_internal_filter( register float *image, register int x_dim,
+                           register int y_dim, float *filt,
+                           register float *temp, register int x_fdim,
+                           register int y_fdim, int xgrid_start,
+                           int xgrid_step, int ygrid_start, int ygrid_step,
+                           register float *result );
+
+void epic_reflect1( float *filt, int x_dim, int y_dim, int x_pos, int y_pos,
+                    float *result, int f_or_e );
+
+#endif // __EPIC_H_