From 20d28e80a5c861a9d5f449ea911ab75b4f37ad0d Mon Sep 17 00:00:00 2001
From: Jef <jef@targetspot.com>
Date: Tue, 24 Sep 2024 14:54:57 +0200
Subject: Initial community commit

---
 Src/h264dec/ldecod/src/context_ini.c | 123 +++++++++++++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 Src/h264dec/ldecod/src/context_ini.c

(limited to 'Src/h264dec/ldecod/src/context_ini.c')

diff --git a/Src/h264dec/ldecod/src/context_ini.c b/Src/h264dec/ldecod/src/context_ini.c
new file mode 100644
index 00000000..2ffcfeef
--- /dev/null
+++ b/Src/h264dec/ldecod/src/context_ini.c
@@ -0,0 +1,123 @@
+
+/*!
+ *************************************************************************************
+ * \file context_ini.c
+ *
+ * \brief
+ *    CABAC context initializations
+ *
+ * \author
+ *    Main contributors (see contributors.h for copyright, address and affiliation details)
+ *    - Detlev Marpe                    <marpe@hhi.de>
+ *    - Heiko Schwarz                   <hschwarz@hhi.de>
+ **************************************************************************************
+ */
+
+#define CONTEXT_INI_C
+
+#include "defines.h"
+#include "global.h"
+#include "biaridecod.h"
+#include "ctx_tables.h"
+
+
+#define IBIARI_CTX_INIT2(ii,jj,ctx,tab,num, qp) \
+{ \
+  for (i=0; i<ii; ++i) \
+  for (j=0; j<jj; ++j) \
+  { \
+  biari_init_context (qp, &(ctx[i][j]), tab ## _I[num][i][j]); \
+  } \
+}
+
+#define PBIARI_CTX_INIT2(ii,jj,ctx,tab,num, qp) \
+{ \
+  for (i=0; i<ii; ++i) \
+  for (j=0; j<jj; ++j) \
+  { \
+  biari_init_context (qp, &(ctx[i][j]), tab ## _P[num][i][j]); \
+  } \
+}
+
+
+#define IBIARI_CTX_INIT1(jj,ctx,tab,num, qp) \
+{ \
+  for (j=0; j<jj; ++j) \
+  { \
+  biari_init_context (qp, &(ctx[j]), tab ## _I[num][0][j]); \
+  } \
+}
+
+
+#define PBIARI_CTX_INIT1(jj,ctx,tab,num, qp) \
+{ \
+  { \
+  for (j=0; j<jj; ++j) \
+  { \
+  biari_init_context (qp, &(ctx[j]), tab ## _P[num][0][j]); \
+  } \
+  } \
+}
+
+void init_contexts (Slice *currSlice)
+{
+  VideoParameters *p_Vid = currSlice->p_Vid;
+  MotionInfoContexts*  mc = currSlice->mot_ctx;
+  TextureInfoContexts* tc = currSlice->tex_ctx;
+  int i, j;
+  int qp = imax(0, p_Vid->qp);
+  int model_number = currSlice->model_number;
+
+  //printf("%d -", p_Vid->currentSlice->model_number);
+
+  //--- motion coding contexts ---
+  if ((currSlice->slice_type == I_SLICE)||(currSlice->slice_type == SI_SLICE))
+  {
+    IBIARI_CTX_INIT2 (3, NUM_MB_TYPE_CTX,   mc->mb_type_contexts,     INIT_MB_TYPE,    model_number, qp);
+    IBIARI_CTX_INIT2 (2, NUM_B8_TYPE_CTX,   mc->b8_type_contexts,     INIT_B8_TYPE,    model_number, qp);
+    IBIARI_CTX_INIT2 (2, NUM_MV_RES_CTX,    mc->mv_res_contexts,      INIT_MV_RES,     model_number, qp);
+    IBIARI_CTX_INIT2 (2, NUM_REF_NO_CTX,    mc->ref_no_contexts,      INIT_REF_NO,     model_number, qp);
+    IBIARI_CTX_INIT1 (   NUM_DELTA_QP_CTX,  mc->delta_qp_contexts,    INIT_DELTA_QP,   model_number, qp);
+    IBIARI_CTX_INIT1 (   NUM_MB_AFF_CTX,    mc->mb_aff_contexts,      INIT_MB_AFF,     model_number, qp);    
+
+    //--- texture coding contexts ---
+    IBIARI_CTX_INIT1 (   NUM_TRANSFORM_SIZE_CTX, tc->transform_size_contexts, INIT_TRANSFORM_SIZE, model_number, qp);
+    IBIARI_CTX_INIT1 (                 NUM_IPR_CTX,  tc->ipr_contexts,     INIT_IPR,       model_number, qp);
+    IBIARI_CTX_INIT1 (                 NUM_CIPR_CTX, tc->cipr_contexts,    INIT_CIPR,      model_number, qp);
+    IBIARI_CTX_INIT2 (3,               NUM_CBP_CTX,  tc->cbp_contexts,     INIT_CBP,       model_number, qp);
+    IBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_BCBP_CTX, tc->bcbp_contexts,    INIT_BCBP,      model_number, qp);
+    IBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_MAP_CTX,  tc->map_contexts[0],  INIT_MAP,       model_number, qp);
+#if ENABLE_FIELD_CTX
+    IBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_MAP_CTX,  tc->map_contexts[1],  INIT_FLD_MAP,   model_number, qp);
+    IBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_LAST_CTX, tc->last_contexts[1], INIT_FLD_LAST,  model_number, qp);
+#endif
+    IBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_LAST_CTX, tc->last_contexts[0], INIT_LAST,      model_number, qp);    
+    IBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_ONE_CTX,  tc->one_contexts,     INIT_ONE,       model_number, qp);
+    IBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_ABS_CTX,  tc->abs_contexts,     INIT_ABS,       model_number, qp);
+  }
+  else
+  {
+    PBIARI_CTX_INIT2 (3, NUM_MB_TYPE_CTX,   mc->mb_type_contexts,     INIT_MB_TYPE,    model_number, qp);
+    PBIARI_CTX_INIT2 (2, NUM_B8_TYPE_CTX,   mc->b8_type_contexts,     INIT_B8_TYPE,    model_number, qp);
+    PBIARI_CTX_INIT2 (2, NUM_MV_RES_CTX,    mc->mv_res_contexts,      INIT_MV_RES,     model_number, qp);
+    PBIARI_CTX_INIT2 (2, NUM_REF_NO_CTX,    mc->ref_no_contexts,      INIT_REF_NO,     model_number, qp);
+    PBIARI_CTX_INIT1 (   NUM_DELTA_QP_CTX,  mc->delta_qp_contexts,    INIT_DELTA_QP,   model_number, qp);
+    PBIARI_CTX_INIT1 (   NUM_MB_AFF_CTX,    mc->mb_aff_contexts,      INIT_MB_AFF,     model_number, qp);    
+
+    //--- texture coding contexts ---
+    PBIARI_CTX_INIT1 (   NUM_TRANSFORM_SIZE_CTX, tc->transform_size_contexts, INIT_TRANSFORM_SIZE, model_number, qp);
+    PBIARI_CTX_INIT1 (                 NUM_IPR_CTX,  tc->ipr_contexts,     INIT_IPR,       model_number, qp);
+    PBIARI_CTX_INIT1 (                 NUM_CIPR_CTX, tc->cipr_contexts,    INIT_CIPR,      model_number, qp);
+    PBIARI_CTX_INIT2 (3,               NUM_CBP_CTX,  tc->cbp_contexts,     INIT_CBP,       model_number, qp);
+    PBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_BCBP_CTX, tc->bcbp_contexts,    INIT_BCBP,      model_number, qp);
+    PBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_MAP_CTX,  tc->map_contexts[0],  INIT_MAP,       model_number, qp);
+#if ENABLE_FIELD_CTX
+    PBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_MAP_CTX,  tc->map_contexts[1],  INIT_FLD_MAP,   model_number, qp);
+    PBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_LAST_CTX, tc->last_contexts[1], INIT_FLD_LAST,  model_number, qp);
+#endif
+    PBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_LAST_CTX, tc->last_contexts[0], INIT_LAST,      model_number, qp);    
+    PBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_ONE_CTX,  tc->one_contexts,     INIT_ONE,       model_number, qp);
+    PBIARI_CTX_INIT2 (NUM_BLOCK_TYPES, NUM_ABS_CTX,  tc->abs_contexts,     INIT_ABS,       model_number, qp);
+  }
+}
+
-- 
cgit