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-rw-r--r--tremor/bitwise.c450
1 files changed, 0 insertions, 450 deletions
diff --git a/tremor/bitwise.c b/tremor/bitwise.c
deleted file mode 100644
index 6bd082b6dc..0000000000
--- a/tremor/bitwise.c
+++ /dev/null
@@ -1,450 +0,0 @@
-/********************************************************************
- * *
- * THIS FILE IS PART OF THE OggVorbis 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 OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2002 *
- * by the Xiph.Org Foundation http://www.xiph.org/ *
- * *
- ********************************************************************
-
- function: packing variable sized words into an octet stream
- last mod: $Id$
-
- ********************************************************************/
-
-/* We're 'LSb' endian; if we write a word but read individual bits,
- then we'll read the lsb first */
-
-#include <string.h>
-#include <stdlib.h>
-#include "ogg.h"
-
-#define BUFFER_INCREMENT 256
-
-static const unsigned long mask[]=
-{0x00000000,0x00000001,0x00000003,0x00000007,0x0000000f,
- 0x0000001f,0x0000003f,0x0000007f,0x000000ff,0x000001ff,
- 0x000003ff,0x000007ff,0x00000fff,0x00001fff,0x00003fff,
- 0x00007fff,0x0000ffff,0x0001ffff,0x0003ffff,0x0007ffff,
- 0x000fffff,0x001fffff,0x003fffff,0x007fffff,0x00ffffff,
- 0x01ffffff,0x03ffffff,0x07ffffff,0x0fffffff,0x1fffffff,
- 0x3fffffff,0x7fffffff,0xffffffff };
-
-static const unsigned int mask8B[]=
-{0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff};
-
-void oggpack_writeinit(oggpack_buffer *b){
- memset(b,0,sizeof(*b));
- b->ptr=b->buffer=_ogg_malloc(BUFFER_INCREMENT);
- b->buffer[0]='\0';
- b->storage=BUFFER_INCREMENT;
-}
-
-void oggpackB_writeinit(oggpack_buffer *b){
- oggpack_writeinit(b);
-}
-
-void oggpack_writetrunc(oggpack_buffer *b,long bits){
- long bytes=bits>>3;
- bits-=bytes*8;
- b->ptr=b->buffer+bytes;
- b->endbit=bits;
- b->endbyte=bytes;
- *b->ptr&=mask[bits];
-}
-
-void oggpackB_writetrunc(oggpack_buffer *b,long bits){
- long bytes=bits>>3;
- bits-=bytes*8;
- b->ptr=b->buffer+bytes;
- b->endbit=bits;
- b->endbyte=bytes;
- *b->ptr&=mask8B[bits];
-}
-
-/* Takes only up to 32 bits. */
-void oggpack_write(oggpack_buffer *b,unsigned long value,int bits){
- if(b->endbyte+4>=b->storage){
- b->buffer=_ogg_realloc(b->buffer,b->storage+BUFFER_INCREMENT);
- b->storage+=BUFFER_INCREMENT;
- b->ptr=b->buffer+b->endbyte;
- }
-
- value&=mask[bits];
- bits+=b->endbit;
-
- b->ptr[0]|=value<<b->endbit;
-
- if(bits>=8){
- b->ptr[1]=(unsigned char)(value>>(8-b->endbit));
- if(bits>=16){
- b->ptr[2]=(unsigned char)(value>>(16-b->endbit));
- if(bits>=24){
- b->ptr[3]=(unsigned char)(value>>(24-b->endbit));
- if(bits>=32){
- if(b->endbit)
- b->ptr[4]=(unsigned char)(value>>(32-b->endbit));
- else
- b->ptr[4]=0;
- }
- }
- }
- }
-
- b->endbyte+=bits/8;
- b->ptr+=bits/8;
- b->endbit=bits&7;
-}
-
-/* Takes only up to 32 bits. */
-void oggpackB_write(oggpack_buffer *b,unsigned long value,int bits){
- if(b->endbyte+4>=b->storage){
- b->buffer=_ogg_realloc(b->buffer,b->storage+BUFFER_INCREMENT);
- b->storage+=BUFFER_INCREMENT;
- b->ptr=b->buffer+b->endbyte;
- }
-
- value=(value&mask[bits])<<(32-bits);
- bits+=b->endbit;
-
- b->ptr[0]|=value>>(24+b->endbit);
-
- if(bits>=8){
- b->ptr[1]=(unsigned char)(value>>(16+b->endbit));
- if(bits>=16){
- b->ptr[2]=(unsigned char)(value>>(8+b->endbit));
- if(bits>=24){
- b->ptr[3]=(unsigned char)(value>>(b->endbit));
- if(bits>=32){
- if(b->endbit)
- b->ptr[4]=(unsigned char)(value<<(8-b->endbit));
- else
- b->ptr[4]=0;
- }
- }
- }
- }
-
- b->endbyte+=bits/8;
- b->ptr+=bits/8;
- b->endbit=bits&7;
-}
-
-void oggpack_writealign(oggpack_buffer *b){
- int bits=8-b->endbit;
- if(bits<8)
- oggpack_write(b,0,bits);
-}
-
-void oggpackB_writealign(oggpack_buffer *b){
- int bits=8-b->endbit;
- if(bits<8)
- oggpackB_write(b,0,bits);
-}
-
-static void oggpack_writecopy_helper(oggpack_buffer *b,
- void *source,
- long bits,
- void (*w)(oggpack_buffer *,
- unsigned long,
- int),
- int msb){
- unsigned char *ptr=(unsigned char *)source;
-
- long bytes=bits/8;
- bits-=bytes*8;
-
- if(b->endbit){
- int i;
- /* unaligned copy. Do it the hard way. */
- for(i=0;i<bytes;i++)
- w(b,(unsigned long)(ptr[i]),8);
- }else{
- /* aligned block copy */
- if(b->endbyte+bytes+1>=b->storage){
- b->storage=b->endbyte+bytes+BUFFER_INCREMENT;
- b->buffer=_ogg_realloc(b->buffer,b->storage);
- b->ptr=b->buffer+b->endbyte;
- }
-
- memmove(b->ptr,source,bytes);
- b->ptr+=bytes;
- b->endbyte+=bytes;
- *b->ptr=0;
-
- }
- if(bits){
- if(msb)
- w(b,(unsigned long)(ptr[bytes]>>(8-bits)),bits);
- else
- w(b,(unsigned long)(ptr[bytes]),bits);
- }
-}
-
-void oggpack_writecopy(oggpack_buffer *b,void *source,long bits){
- oggpack_writecopy_helper(b,source,bits,oggpack_write,0);
-}
-
-void oggpackB_writecopy(oggpack_buffer *b,void *source,long bits){
- oggpack_writecopy_helper(b,source,bits,oggpackB_write,1);
-}
-
-void oggpack_reset(oggpack_buffer *b){
- b->ptr=b->buffer;
- b->buffer[0]=0;
- b->endbit=b->endbyte=0;
-}
-
-void oggpackB_reset(oggpack_buffer *b){
- oggpack_reset(b);
-}
-
-void oggpack_writeclear(oggpack_buffer *b){
- _ogg_free(b->buffer);
- memset(b,0,sizeof(*b));
-}
-
-void oggpackB_writeclear(oggpack_buffer *b){
- oggpack_writeclear(b);
-}
-
-void oggpack_readinit(oggpack_buffer *b,unsigned char *buf,int bytes){
- memset(b,0,sizeof(*b));
- b->buffer=b->ptr=buf;
- b->storage=bytes;
-}
-
-void oggpackB_readinit(oggpack_buffer *b,unsigned char *buf,int bytes){
- oggpack_readinit(b,buf,bytes);
-}
-
-/* Read in bits without advancing the bitptr; bits <= 32 */
-long oggpack_look(oggpack_buffer *b,int bits){
- unsigned long ret;
- unsigned long m=mask[bits];
-
- bits+=b->endbit;
-
- if(b->endbyte+4>=b->storage){
- /* not the main path */
- if(b->endbyte*8+bits>b->storage*8)return(-1);
- }
-
- ret=b->ptr[0]>>b->endbit;
- if(bits>8){
- ret|=b->ptr[1]<<(8-b->endbit);
- if(bits>16){
- ret|=b->ptr[2]<<(16-b->endbit);
- if(bits>24){
- ret|=b->ptr[3]<<(24-b->endbit);
- if(bits>32 && b->endbit)
- ret|=b->ptr[4]<<(32-b->endbit);
- }
- }
- }
- return(m&ret);
-}
-
-/* Read in bits without advancing the bitptr; bits <= 32 */
-long oggpackB_look(oggpack_buffer *b,int bits){
- unsigned long ret;
- int m=32-bits;
-
- bits+=b->endbit;
-
- if(b->endbyte+4>=b->storage){
- /* not the main path */
- if(b->endbyte*8+bits>b->storage*8)return(-1);
- }
-
- ret=b->ptr[0]<<(24+b->endbit);
- if(bits>8){
- ret|=b->ptr[1]<<(16+b->endbit);
- if(bits>16){
- ret|=b->ptr[2]<<(8+b->endbit);
- if(bits>24){
- ret|=b->ptr[3]<<(b->endbit);
- if(bits>32 && b->endbit)
- ret|=b->ptr[4]>>(8-b->endbit);
- }
- }
- }
- return ((ret&0xffffffff)>>(m>>1))>>((m+1)>>1);
-}
-
-long oggpack_look1(oggpack_buffer *b){
- if(b->endbyte>=b->storage)return(-1);
- return((b->ptr[0]>>b->endbit)&1);
-}
-
-long oggpackB_look1(oggpack_buffer *b){
- if(b->endbyte>=b->storage)return(-1);
- return((b->ptr[0]>>(7-b->endbit))&1);
-}
-
-void oggpack_adv(oggpack_buffer *b,int bits){
- bits+=b->endbit;
- b->ptr+=bits/8;
- b->endbyte+=bits/8;
- b->endbit=bits&7;
-}
-
-void oggpackB_adv(oggpack_buffer *b,int bits){
- oggpack_adv(b,bits);
-}
-
-void oggpack_adv1(oggpack_buffer *b){
- if(++(b->endbit)>7){
- b->endbit=0;
- b->ptr++;
- b->endbyte++;
- }
-}
-
-void oggpackB_adv1(oggpack_buffer *b){
- oggpack_adv1(b);
-}
-
-/* bits <= 32 */
-long oggpack_read(oggpack_buffer *b,int bits){
- long ret;
- unsigned long m=mask[bits];
-
- bits+=b->endbit;
-
- if(b->endbyte+4>=b->storage){
- /* not the main path */
- ret=-1L;
- if(b->endbyte*8+bits>b->storage*8)goto overflow;
- }
-
- ret=b->ptr[0]>>b->endbit;
- if(bits>8){
- ret|=b->ptr[1]<<(8-b->endbit);
- if(bits>16){
- ret|=b->ptr[2]<<(16-b->endbit);
- if(bits>24){
- ret|=b->ptr[3]<<(24-b->endbit);
- if(bits>32 && b->endbit){
- ret|=b->ptr[4]<<(32-b->endbit);
- }
- }
- }
- }
- ret&=m;
-
- overflow:
-
- b->ptr+=bits/8;
- b->endbyte+=bits/8;
- b->endbit=bits&7;
- return(ret);
-}
-
-/* bits <= 32 */
-long oggpackB_read(oggpack_buffer *b,int bits){
- long ret;
- long m=32-bits;
-
- bits+=b->endbit;
-
- if(b->endbyte+4>=b->storage){
- /* not the main path */
- ret=-1L;
- if(b->endbyte*8+bits>b->storage*8)goto overflow;
- }
-
- ret=b->ptr[0]<<(24+b->endbit);
- if(bits>8){
- ret|=b->ptr[1]<<(16+b->endbit);
- if(bits>16){
- ret|=b->ptr[2]<<(8+b->endbit);
- if(bits>24){
- ret|=b->ptr[3]<<(b->endbit);
- if(bits>32 && b->endbit)
- ret|=b->ptr[4]>>(8-b->endbit);
- }
- }
- }
- ret=((ret&0xffffffffUL)>>(m>>1))>>((m+1)>>1);
-
- overflow:
-
- b->ptr+=bits/8;
- b->endbyte+=bits/8;
- b->endbit=bits&7;
- return(ret);
-}
-
-long oggpack_read1(oggpack_buffer *b){
- long ret;
-
- if(b->endbyte>=b->storage){
- /* not the main path */
- ret=-1L;
- goto overflow;
- }
-
- ret=(b->ptr[0]>>b->endbit)&1;
-
- overflow:
-
- b->endbit++;
- if(b->endbit>7){
- b->endbit=0;
- b->ptr++;
- b->endbyte++;
- }
- return(ret);
-}
-
-long oggpackB_read1(oggpack_buffer *b){
- long ret;
-
- if(b->endbyte>=b->storage){
- /* not the main path */
- ret=-1L;
- goto overflow;
- }
-
- ret=(b->ptr[0]>>(7-b->endbit))&1;
-
- overflow:
-
- b->endbit++;
- if(b->endbit>7){
- b->endbit=0;
- b->ptr++;
- b->endbyte++;
- }
- return(ret);
-}
-
-long oggpack_bytes(oggpack_buffer *b){
- return(b->endbyte+(b->endbit+7)/8);
-}
-
-long oggpack_bits(oggpack_buffer *b){
- return(b->endbyte*8+b->endbit);
-}
-
-long oggpackB_bytes(oggpack_buffer *b){
- return oggpack_bytes(b);
-}
-
-long oggpackB_bits(oggpack_buffer *b){
- return oggpack_bits(b);
-}
-
-unsigned char *oggpack_get_buffer(oggpack_buffer *b){
- return(b->buffer);
-}
-
-unsigned char *oggpackB_get_buffer(oggpack_buffer *b){
- return oggpack_get_buffer(b);
-}
-
-#undef BUFFER_INCREMENT
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-29 23:07:01 +0000