*
* This file was part of the Independent JPEG Group's software:
* Copyright (C) 1994-1996, Thomas G. Lane.
- * It was modified by The libjpeg-turbo Project to include only code relevant
- * to libjpeg-turbo.
- * For conditions of distribution and use, see the accompanying README file.
+ * libjpeg-turbo Modifications:
+ * Copyright (C) 2015, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
*
* This include file contains common declarations for the forward and
* inverse DCT modules. These declarations are private to the DCT managers
/*
* A forward DCT routine is given a pointer to a work area of type DCTELEM[];
* the DCT is to be performed in-place in that buffer. Type DCTELEM is int
- * for 8-bit samples, INT32 for 12-bit samples. (NOTE: Floating-point DCT
+ * for 8-bit samples, JLONG for 12-bit samples. (NOTE: Floating-point DCT
* implementations use an array of type FAST_FLOAT, instead.)
* The DCT inputs are expected to be signed (range +-CENTERJSAMPLE).
* The DCT outputs are returned scaled up by a factor of 8; they therefore
typedef unsigned int UDCTELEM;
typedef unsigned long long UDCTELEM2;
#else
-typedef short DCTELEM; /* prefer 16 bit with SIMD for parellelism */
+typedef short DCTELEM; /* prefer 16 bit with SIMD for parellelism */
typedef unsigned short UDCTELEM;
typedef unsigned int UDCTELEM2;
#endif
#else
-typedef INT32 DCTELEM; /* must have 32 bits */
+typedef JLONG DCTELEM; /* must have 32 bits */
typedef unsigned long long UDCTELEM2;
#endif
* Each IDCT routine has its own ideas about the best dct_table element type.
*/
-typedef MULTIPLIER ISLOW_MULT_TYPE; /* short or int, whichever is faster */
+typedef MULTIPLIER ISLOW_MULT_TYPE; /* short or int, whichever is faster */
#if BITS_IN_JSAMPLE == 8
-typedef MULTIPLIER IFAST_MULT_TYPE; /* 16 bits is OK, use short if faster */
-#define IFAST_SCALE_BITS 2 /* fractional bits in scale factors */
+typedef MULTIPLIER IFAST_MULT_TYPE; /* 16 bits is OK, use short if faster */
+#define IFAST_SCALE_BITS 2 /* fractional bits in scale factors */
#else
-typedef INT32 IFAST_MULT_TYPE; /* need 32 bits for scaled quantizers */
-#define IFAST_SCALE_BITS 13 /* fractional bits in scale factors */
+typedef JLONG IFAST_MULT_TYPE; /* need 32 bits for scaled quantizers */
+#define IFAST_SCALE_BITS 13 /* fractional bits in scale factors */
#endif
-typedef FAST_FLOAT FLOAT_MULT_TYPE; /* preferred floating type */
+typedef FAST_FLOAT FLOAT_MULT_TYPE; /* preferred floating type */
/*
/* Extern declarations for the forward and inverse DCT routines. */
-EXTERN(void) jpeg_fdct_islow (DCTELEM * data);
-EXTERN(void) jpeg_fdct_ifast (DCTELEM * data);
-EXTERN(void) jpeg_fdct_float (FAST_FLOAT * data);
-
-EXTERN(void) jpeg_idct_islow
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_ifast
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_float
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_7x7
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_6x6
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_5x5
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_4x4
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_3x3
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_2x2
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_1x1
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_9x9
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_10x10
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_11x11
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_12x12
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_13x13
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_14x14
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_15x15
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
-EXTERN(void) jpeg_idct_16x16
- (j_decompress_ptr cinfo, jpeg_component_info * compptr,
- JCOEFPTR coef_block, JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_fdct_islow(DCTELEM *data);
+EXTERN(void) jpeg_fdct_ifast(DCTELEM *data);
+EXTERN(void) jpeg_fdct_float(FAST_FLOAT *data);
+
+EXTERN(void) jpeg_idct_islow(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_ifast(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_float(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_7x7(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_6x6(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_5x5(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_4x4(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_3x3(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_2x2(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_1x1(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_9x9(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_10x10(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_11x11(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_12x12(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_13x13(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_14x14(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_15x15(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
+EXTERN(void) jpeg_idct_16x16(j_decompress_ptr cinfo,
+ jpeg_component_info *compptr, JCOEFPTR coef_block,
+ JSAMPARRAY output_buf, JDIMENSION output_col);
/*
* Macros for handling fixed-point arithmetic; these are used by many
* but not all of the DCT/IDCT modules.
*
- * All values are expected to be of type INT32.
+ * All values are expected to be of type JLONG.
* Fractional constants are scaled left by CONST_BITS bits.
* CONST_BITS is defined within each module using these macros,
* and may differ from one module to the next.
*/
-#define ONE ((INT32) 1)
-#define CONST_SCALE (ONE << CONST_BITS)
+#define ONE ((JLONG)1)
+#define CONST_SCALE (ONE << CONST_BITS)
/* Convert a positive real constant to an integer scaled by CONST_SCALE.
* Caution: some C compilers fail to reduce "FIX(constant)" at compile time,
* thus causing a lot of useless floating-point operations at run time.
*/
-#define FIX(x) ((INT32) ((x) * CONST_SCALE + 0.5))
+#define FIX(x) ((JLONG)((x) * CONST_SCALE + 0.5))
-/* Descale and correctly round an INT32 value that's scaled by N bits.
+/* Descale and correctly round a JLONG value that's scaled by N bits.
* We assume RIGHT_SHIFT rounds towards minus infinity, so adding
* the fudge factor is correct for either sign of X.
*/
-#define DESCALE(x,n) RIGHT_SHIFT((x) + (ONE << ((n)-1)), n)
+#define DESCALE(x, n) RIGHT_SHIFT((x) + (ONE << ((n) - 1)), n)
-/* Multiply an INT32 variable by an INT32 constant to yield an INT32 result.
+/* Multiply a JLONG variable by a JLONG constant to yield a JLONG result.
* This macro is used only when the two inputs will actually be no more than
* 16 bits wide, so that a 16x16->32 bit multiply can be used instead of a
* full 32x32 multiply. This provides a useful speedup on many machines.
*/
#ifdef SHORTxSHORT_32 /* may work if 'int' is 32 bits */
-#define MULTIPLY16C16(var,const) (((INT16) (var)) * ((INT16) (const)))
+#define MULTIPLY16C16(var, const) (((INT16)(var)) * ((INT16)(const)))
#endif
#ifdef SHORTxLCONST_32 /* known to work with Microsoft C 6.0 */
-#define MULTIPLY16C16(var,const) (((INT16) (var)) * ((INT32) (const)))
+#define MULTIPLY16C16(var, const) (((INT16)(var)) * ((JLONG)(const)))
#endif
#ifndef MULTIPLY16C16 /* default definition */
-#define MULTIPLY16C16(var,const) ((var) * (const))
+#define MULTIPLY16C16(var, const) ((var) * (const))
#endif
/* Same except both inputs are variables. */
#ifdef SHORTxSHORT_32 /* may work if 'int' is 32 bits */
-#define MULTIPLY16V16(var1,var2) (((INT16) (var1)) * ((INT16) (var2)))
+#define MULTIPLY16V16(var1, var2) (((INT16)(var1)) * ((INT16)(var2)))
#endif
#ifndef MULTIPLY16V16 /* default definition */
-#define MULTIPLY16V16(var1,var2) ((var1) * (var2))
+#define MULTIPLY16V16(var1, var2) ((var1) * (var2))
#endif
projects / platform / upstream / libjpeg-turbo.git / blobdiff