aboutsummaryrefslogtreecommitdiff
path: root/KaplaDemo/samples/sampleViewer3/IJGWin32/jchuff.h
diff options
context:
space:
mode:
authorgit perforce import user <a@b>2016-10-25 12:29:14 -0600
committerSheikh Dawood Abdul Ajees <Sheikh Dawood Abdul Ajees>2016-10-25 18:56:37 -0500
commit3dfe2108cfab31ba3ee5527e217d0d8e99a51162 (patch)
treefa6485c169e50d7415a651bf838f5bcd0fd3bfbd /KaplaDemo/samples/sampleViewer3/IJGWin32/jchuff.h
downloadphysx-3.4-3dfe2108cfab31ba3ee5527e217d0d8e99a51162.tar.xz
physx-3.4-3dfe2108cfab31ba3ee5527e217d0d8e99a51162.zip
Initial commit:
PhysX 3.4.0 Update @ 21294896 APEX 1.4.0 Update @ 21275617 [CL 21300167]
Diffstat (limited to 'KaplaDemo/samples/sampleViewer3/IJGWin32/jchuff.h')
-rw-r--r--KaplaDemo/samples/sampleViewer3/IJGWin32/jchuff.h54
1 files changed, 54 insertions, 0 deletions
diff --git a/KaplaDemo/samples/sampleViewer3/IJGWin32/jchuff.h b/KaplaDemo/samples/sampleViewer3/IJGWin32/jchuff.h
new file mode 100644
index 00000000..b4db2b57
--- /dev/null
+++ b/KaplaDemo/samples/sampleViewer3/IJGWin32/jchuff.h
@@ -0,0 +1,54 @@
+/*
+ * jchuff.h
+ *
+ * Copyright (C) 1991-1997, Thomas G. Lane.
+ * This file is part of the Independent JPEG Group's software.
+ * For conditions of distribution and use, see the accompanying README file.
+ *
+ * This file contains declarations for Huffman entropy encoding routines
+ * that are shared between the sequential encoder (jchuff.c) and the
+ * progressive encoder (jcphuff.c). No other modules need to see these.
+ */
+
+/* The legal range of a DCT coefficient is
+ * -1024 .. +1023 for 8-bit data;
+ * -16384 .. +16383 for 12-bit data.
+ * Hence the magnitude should always fit in 10 or 14 bits respectively.
+ */
+
+#if BITS_IN_JSAMPLE == 8
+#define MAX_COEF_BITS 10
+#else
+#define MAX_COEF_BITS 14
+#endif
+
+/* The legal range of a spatial difference is
+ * -32767 .. +32768.
+ * Hence the magnitude should always fit in 16 bits.
+ */
+
+#define MAX_DIFF_BITS 16
+
+/* Derived data constructed for each Huffman table */
+
+typedef struct {
+ unsigned int ehufco[256]; /* code for each symbol */
+ char ehufsi[256]; /* length of code for each symbol */
+ /* If no code has been allocated for a symbol S, ehufsi[S] contains 0 */
+} c_derived_tbl;
+
+/* Short forms of external names for systems with brain-damaged linkers. */
+
+#ifdef NEED_SHORT_EXTERNAL_NAMES
+#define jpeg_make_c_derived_tbl jMkCDerived
+#define jpeg_gen_optimal_table jGenOptTbl
+#endif /* NEED_SHORT_EXTERNAL_NAMES */
+
+/* Expand a Huffman table definition into the derived format */
+EXTERN(void) jpeg_make_c_derived_tbl
+ JPP((j_compress_ptr cinfo, boolean isDC, int tblno,
+ c_derived_tbl ** pdtbl));
+
+/* Generate an optimal table definition given the specified counts */
+EXTERN(void) jpeg_gen_optimal_table
+ JPP((j_compress_ptr cinfo, JHUFF_TBL * htbl, long freq[]));