jxrlib: Add library sources

2026-01-01 04:04:23 +01:00 · 2020-09-11 20:56:27 +02:00 · 2020-09-11 20:56:27 +02:00 · d9d777072a
commit d9d777072a
parent 9a746c257e
63 changed files with 37177 additions and 0 deletions
--- a/jxrlib/image/encode/encode.c
+++ b/jxrlib/image/encode/encode.c
@ -0,0 +1,144 @@
+//*@@@+++@@@@******************************************************************
+//
+// Copyright © Microsoft Corp.
+// All rights reserved.
+// 
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+// 
+// • Redistributions of source code must retain the above copyright notice,
+//   this list of conditions and the following disclaimer.
+// • Redistributions in binary form must reproduce the above copyright notice,
+//   this list of conditions and the following disclaimer in the documentation
+//   and/or other materials provided with the distribution.
+// 
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+//*@@@---@@@@******************************************************************
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "encode.h"
+#include "strcodec.h"
+#include "common.h"
+
+#ifdef MEM_TRACE
+#define TRACE_MALLOC    1
+#define TRACE_NEW       0
+#define TRACE_HEAP      0
+#include "memtrace.h"
+#endif
+
+/*************************************************************************
+    Context allocation
+    In theory it is possible to independently set uiTrimFlexBits for
+    each tile, but for now we assume only one user specified value is
+    used for the entire image
+*************************************************************************/
+Int AllocateCodingContextEnc(CWMImageStrCodec *pSC, Int iNumContexts, Int iTrimFlexBits)
+{
+    Int i, iCBPSize, k;
+    static const Int aAlphabet[] = {5,4,8,7,7,  12,6,6,12,6,6,7,7,  12,6,6,12,6,6,7,7};
+
+    if (iTrimFlexBits < 0)
+        iTrimFlexBits = 0;
+    else if (iTrimFlexBits > 15)
+        iTrimFlexBits = 15;    
+    pSC->m_param.bTrimFlexbitsFlag = (iTrimFlexBits > 0);
+
+    if (iNumContexts < 1 || iNumContexts > MAX_TILES)  // only between 1 and 256 allowed
+        return ICERR_ERROR;
+
+    if (pSC == NULL)
+        return ICERR_ERROR;
+
+    pSC->m_pCodingContext = malloc (iNumContexts * sizeof (CCodingContext));
+    if (pSC->m_pCodingContext == NULL) {
+        pSC->cNumCodingContext = 0;
+        return ICERR_ERROR;
+    }
+    memset (pSC->m_pCodingContext, 0, iNumContexts * sizeof (CCodingContext));
+
+    pSC->cNumCodingContext = iNumContexts;
+    iCBPSize = (pSC->m_param.cfColorFormat == Y_ONLY || pSC->m_param.cfColorFormat == NCOMPONENT
+        || pSC->m_param.cfColorFormat == CMYK) ? 5 : 9;
+
+    /** allocate / initialize members **/
+    for (i = 0; i < iNumContexts; i++) {
+        CCodingContext *pContext = &(pSC->m_pCodingContext[i]);
+
+        /** allocate adaptive Huffman encoder **/    
+        pContext->m_pAdaptHuffCBPCY = Allocate (iCBPSize, ENCODER);
+        if(pContext->m_pAdaptHuffCBPCY == NULL) {
+            return ICERR_ERROR;
+        }
+        pContext->m_pAdaptHuffCBPCY1 = Allocate(5, ENCODER);
+        if(pContext->m_pAdaptHuffCBPCY1 == NULL){
+            return ICERR_ERROR;
+        }
+
+        for(k = 0; k < NUMVLCTABLES; k ++){
+            pContext->m_pAHexpt[k] = Allocate(aAlphabet[k], ENCODER);
+            if(pContext->m_pAHexpt[k] == NULL){
+                return ICERR_ERROR;
+            }
+        }
+
+        ResetCodingContextEnc(pContext);
+        pContext->m_iTrimFlexBits = iTrimFlexBits;
+    }
+
+    return ICERR_OK;
+}
+
+/*************************************************************************
+    Context reset on encoder
+*************************************************************************/
+Void ResetCodingContextEnc(CCodingContext *pContext)
+{
+    Int k;
+    /** set flags **/
+    pContext->m_pAdaptHuffCBPCY->m_bInitialize = FALSE;
+    pContext->m_pAdaptHuffCBPCY1->m_bInitialize = FALSE;
+    for(k = 0; k < NUMVLCTABLES; k ++)
+        pContext->m_pAHexpt[k]->m_bInitialize = FALSE;
+
+    // reset VLC tables
+    AdaptLowpassEnc (pContext);
+    AdaptHighpassEnc (pContext);
+
+    // reset zigzag patterns, totals
+    InitZigzagScan(pContext);
+    // reset bit reduction and cbp models
+    ResetCodingContext(pContext);
+}
+
+/*************************************************************************
+    Context deletion
+*************************************************************************/
+Void FreeCodingContextEnc(CWMImageStrCodec *pSC)
+{
+    Int iContexts = (Int)(pSC->cNumCodingContext), i, k;
+    if (iContexts > 0 && pSC->m_pCodingContext) {
+
+        for (i = 0; i < iContexts; i++) {
+            CCodingContext *pContext = &(pSC->m_pCodingContext[i]);
+            Clean (pContext->m_pAdaptHuffCBPCY);
+            Clean (pContext->m_pAdaptHuffCBPCY1);
+            for (k = 0; k < NUMVLCTABLES; k++)
+                Clean (pContext->m_pAHexpt[k]);
+        }
+        free (pSC->m_pCodingContext);
+    }
+}
+