initial commit, 4.5 stable

thirdparty/libtheora/fragment.c

@@ -0,0 +1,82 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggTheora SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE Theora SOURCE CODE IS COPYRIGHT (C) 2002-2009                *
+ * by the Xiph.Org Foundation and contributors                      *
+ * https://www.xiph.org/                                            *
+ *                                                                  *
+ ********************************************************************
+
+  function:
+
+ ********************************************************************/
+#include <string.h>
+#include "internal.h"
+
+void oc_frag_copy_c(unsigned char *_dst,const unsigned char *_src,int _ystride){
+  int i;
+  for(i=8;i-->0;){
+    memcpy(_dst,_src,8*sizeof(*_dst));
+    _dst+=_ystride;
+    _src+=_ystride;
+  }
+}
+
+/*Copies the fragments specified by the lists of fragment indices from one
+   frame to another.
+  _dst_frame:     The reference frame to copy to.
+  _src_frame:     The reference frame to copy from.
+  _ystride:       The row stride of the reference frames.
+  _fragis:        A pointer to a list of fragment indices.
+  _nfragis:       The number of fragment indices to copy.
+  _frag_buf_offs: The offsets of fragments in the reference frames.*/
+void oc_frag_copy_list_c(unsigned char *_dst_frame,
+ const unsigned char *_src_frame,int _ystride,
+ const ptrdiff_t *_fragis,ptrdiff_t _nfragis,const ptrdiff_t *_frag_buf_offs){
+  ptrdiff_t fragii;
+  for(fragii=0;fragii<_nfragis;fragii++){
+    ptrdiff_t frag_buf_off;
+    frag_buf_off=_frag_buf_offs[_fragis[fragii]];
+    oc_frag_copy_c(_dst_frame+frag_buf_off,
+     _src_frame+frag_buf_off,_ystride);
+  }
+}
+
+void oc_frag_recon_intra_c(unsigned char *_dst,int _ystride,
+ const ogg_int16_t _residue[64]){
+  int i;
+  for(i=0;i<8;i++){
+    int j;
+    for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+128);
+    _dst+=_ystride;
+  }
+}
+
+void oc_frag_recon_inter_c(unsigned char *_dst,
+ const unsigned char *_src,int _ystride,const ogg_int16_t _residue[64]){
+  int i;
+  for(i=0;i<8;i++){
+    int j;
+    for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+_src[j]);
+    _dst+=_ystride;
+    _src+=_ystride;
+  }
+}
+
+void oc_frag_recon_inter2_c(unsigned char *_dst,const unsigned char *_src1,
+ const unsigned char *_src2,int _ystride,const ogg_int16_t _residue[64]){
+  int i;
+  for(i=0;i<8;i++){
+    int j;
+    for(j=0;j<8;j++)_dst[j]=OC_CLAMP255(_residue[i*8+j]+(_src1[j]+_src2[j]>>1));
+    _dst+=_ystride;
+    _src1+=_ystride;
+    _src2+=_ystride;
+  }
+}
+
+void oc_restore_fpu_c(void){}