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-rw-r--r--drivers/speex/bits.c372
1 files changed, 0 insertions, 372 deletions
diff --git a/drivers/speex/bits.c b/drivers/speex/bits.c
deleted file mode 100644
index 66c6886066..0000000000
--- a/drivers/speex/bits.c
+++ /dev/null
@@ -1,372 +0,0 @@
-/* Copyright (C) 2002 Jean-Marc Valin
- File: speex_bits.c
-
- Handles bit packing/unpacking
-
- 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.
-
- - Neither the name of the Xiph.org Foundation nor the names of its
- contributors may be used to endorse or promote products derived from
- this software without specific prior written permission.
-
- 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 FOUNDATION 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 "config.h"
-
-
-#include <speex/speex_bits.h>
-#include "arch.h"
-#include "os_support.h"
-
-/* Maximum size of the bit-stream (for fixed-size allocation) */
-#ifndef MAX_CHARS_PER_FRAME
-#define MAX_CHARS_PER_FRAME (2000/BYTES_PER_CHAR)
-#endif
-
-EXPORT void speex_bits_init(SpeexBits *bits)
-{
- bits->chars = (char*)speex_alloc(MAX_CHARS_PER_FRAME);
- if (!bits->chars)
- return;
-
- bits->buf_size = MAX_CHARS_PER_FRAME;
-
- bits->owner=1;
-
- speex_bits_reset(bits);
-}
-
-EXPORT void speex_bits_init_buffer(SpeexBits *bits, void *buff, int buf_size)
-{
- bits->chars = (char*)buff;
- bits->buf_size = buf_size;
-
- bits->owner=0;
-
- speex_bits_reset(bits);
-}
-
-EXPORT void speex_bits_set_bit_buffer(SpeexBits *bits, void *buff, int buf_size)
-{
- bits->chars = (char*)buff;
- bits->buf_size = buf_size;
-
- bits->owner=0;
-
- bits->nbBits=buf_size<<LOG2_BITS_PER_CHAR;
- bits->charPtr=0;
- bits->bitPtr=0;
- bits->overflow=0;
-
-}
-
-EXPORT void speex_bits_destroy(SpeexBits *bits)
-{
- if (bits->owner)
- speex_free(bits->chars);
- /* Will do something once the allocation is dynamic */
-}
-
-EXPORT void speex_bits_reset(SpeexBits *bits)
-{
- /* We only need to clear the first byte now */
- bits->chars[0]=0;
- bits->nbBits=0;
- bits->charPtr=0;
- bits->bitPtr=0;
- bits->overflow=0;
-}
-
-EXPORT void speex_bits_rewind(SpeexBits *bits)
-{
- bits->charPtr=0;
- bits->bitPtr=0;
- bits->overflow=0;
-}
-
-EXPORT void speex_bits_read_from(SpeexBits *bits, char *chars, int len)
-{
- int i;
- int nchars = len / BYTES_PER_CHAR;
- if (nchars > bits->buf_size)
- {
- speex_notify("Packet is larger than allocated buffer");
- if (bits->owner)
- {
- char *tmp = (char*)speex_realloc(bits->chars, nchars);
- if (tmp)
- {
- bits->buf_size=nchars;
- bits->chars=tmp;
- } else {
- nchars=bits->buf_size;
- speex_warning("Could not resize input buffer: truncating input");
- }
- } else {
- speex_warning("Do not own input buffer: truncating oversize input");
- nchars=bits->buf_size;
- }
- }
-#if (BYTES_PER_CHAR==2)
-/* Swap bytes to proper endian order (could be done externally) */
-#define HTOLS(A) ((((A) >> 8)&0xff)|(((A) & 0xff)<<8))
-#else
-#define HTOLS(A) (A)
-#endif
- for (i=0;i<nchars;i++)
- bits->chars[i]=HTOLS(chars[i]);
-
- bits->nbBits=nchars<<LOG2_BITS_PER_CHAR;
- bits->charPtr=0;
- bits->bitPtr=0;
- bits->overflow=0;
-}
-
-static void speex_bits_flush(SpeexBits *bits)
-{
- int nchars = ((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR);
- if (bits->charPtr>0)
- SPEEX_MOVE(bits->chars, &bits->chars[bits->charPtr], nchars-bits->charPtr);
- bits->nbBits -= bits->charPtr<<LOG2_BITS_PER_CHAR;
- bits->charPtr=0;
-}
-
-EXPORT void speex_bits_read_whole_bytes(SpeexBits *bits, char *chars, int nbytes)
-{
- int i,pos;
- int nchars = nbytes/BYTES_PER_CHAR;
-
- if (((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR)+nchars > bits->buf_size)
- {
- /* Packet is larger than allocated buffer */
- if (bits->owner)
- {
- char *tmp = (char*)speex_realloc(bits->chars, (bits->nbBits>>LOG2_BITS_PER_CHAR)+nchars+1);
- if (tmp)
- {
- bits->buf_size=(bits->nbBits>>LOG2_BITS_PER_CHAR)+nchars+1;
- bits->chars=tmp;
- } else {
- nchars=bits->buf_size-(bits->nbBits>>LOG2_BITS_PER_CHAR)-1;
- speex_warning("Could not resize input buffer: truncating oversize input");
- }
- } else {
- speex_warning("Do not own input buffer: truncating oversize input");
- nchars=bits->buf_size;
- }
- }
-
- speex_bits_flush(bits);
- pos=bits->nbBits>>LOG2_BITS_PER_CHAR;
- for (i=0;i<nchars;i++)
- bits->chars[pos+i]=HTOLS(chars[i]);
- bits->nbBits+=nchars<<LOG2_BITS_PER_CHAR;
-}
-
-EXPORT int speex_bits_write(SpeexBits *bits, char *chars, int max_nbytes)
-{
- int i;
- int max_nchars = max_nbytes/BYTES_PER_CHAR;
- int charPtr, bitPtr, nbBits;
-
- /* Insert terminator, but save the data so we can put it back after */
- bitPtr=bits->bitPtr;
- charPtr=bits->charPtr;
- nbBits=bits->nbBits;
- speex_bits_insert_terminator(bits);
- bits->bitPtr=bitPtr;
- bits->charPtr=charPtr;
- bits->nbBits=nbBits;
-
- if (max_nchars > ((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR))
- max_nchars = ((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR);
-
- for (i=0;i<max_nchars;i++)
- chars[i]=HTOLS(bits->chars[i]);
- return max_nchars*BYTES_PER_CHAR;
-}
-
-EXPORT int speex_bits_write_whole_bytes(SpeexBits *bits, char *chars, int max_nbytes)
-{
- int max_nchars = max_nbytes/BYTES_PER_CHAR;
- int i;
- if (max_nchars > ((bits->nbBits)>>LOG2_BITS_PER_CHAR))
- max_nchars = ((bits->nbBits)>>LOG2_BITS_PER_CHAR);
- for (i=0;i<max_nchars;i++)
- chars[i]=HTOLS(bits->chars[i]);
-
- if (bits->bitPtr>0)
- bits->chars[0]=bits->chars[max_nchars];
- else
- bits->chars[0]=0;
- bits->charPtr=0;
- bits->nbBits &= (BITS_PER_CHAR-1);
- return max_nchars*BYTES_PER_CHAR;
-}
-
-EXPORT void speex_bits_pack(SpeexBits *bits, int data, int nbBits)
-{
- unsigned int d=data;
-
- if (bits->charPtr+((nbBits+bits->bitPtr)>>LOG2_BITS_PER_CHAR) >= bits->buf_size)
- {
- speex_notify("Buffer too small to pack bits");
- if (bits->owner)
- {
- int new_nchars = ((bits->buf_size+5)*3)>>1;
- char *tmp = (char*)speex_realloc(bits->chars, new_nchars);
- if (tmp)
- {
- bits->buf_size=new_nchars;
- bits->chars=tmp;
- } else {
- speex_warning("Could not resize input buffer: not packing");
- return;
- }
- } else {
- speex_warning("Do not own input buffer: not packing");
- return;
- }
- }
-
- while(nbBits)
- {
- int bit;
- bit = (d>>(nbBits-1))&1;
- bits->chars[bits->charPtr] |= bit<<(BITS_PER_CHAR-1-bits->bitPtr);
- bits->bitPtr++;
-
- if (bits->bitPtr==BITS_PER_CHAR)
- {
- bits->bitPtr=0;
- bits->charPtr++;
- bits->chars[bits->charPtr] = 0;
- }
- bits->nbBits++;
- nbBits--;
- }
-}
-
-EXPORT int speex_bits_unpack_signed(SpeexBits *bits, int nbBits)
-{
- unsigned int d=speex_bits_unpack_unsigned(bits,nbBits);
- /* If number is negative */
- if (d>>(nbBits-1))
- {
- d |= (-1)<<nbBits;
- }
- return d;
-}
-
-EXPORT unsigned int speex_bits_unpack_unsigned(SpeexBits *bits, int nbBits)
-{
- unsigned int d=0;
- if ((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr+nbBits>bits->nbBits)
- bits->overflow=1;
- if (bits->overflow)
- return 0;
- while(nbBits)
- {
- d<<=1;
- d |= (bits->chars[bits->charPtr]>>(BITS_PER_CHAR-1 - bits->bitPtr))&1;
- bits->bitPtr++;
- if (bits->bitPtr==BITS_PER_CHAR)
- {
- bits->bitPtr=0;
- bits->charPtr++;
- }
- nbBits--;
- }
- return d;
-}
-
-EXPORT unsigned int speex_bits_peek_unsigned(SpeexBits *bits, int nbBits)
-{
- unsigned int d=0;
- int bitPtr, charPtr;
- char *chars;
-
- if ((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr+nbBits>bits->nbBits)
- bits->overflow=1;
- if (bits->overflow)
- return 0;
-
- bitPtr=bits->bitPtr;
- charPtr=bits->charPtr;
- chars = bits->chars;
- while(nbBits)
- {
- d<<=1;
- d |= (chars[charPtr]>>(BITS_PER_CHAR-1 - bitPtr))&1;
- bitPtr++;
- if (bitPtr==BITS_PER_CHAR)
- {
- bitPtr=0;
- charPtr++;
- }
- nbBits--;
- }
- return d;
-}
-
-EXPORT int speex_bits_peek(SpeexBits *bits)
-{
- if ((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr+1>bits->nbBits)
- bits->overflow=1;
- if (bits->overflow)
- return 0;
- return (bits->chars[bits->charPtr]>>(BITS_PER_CHAR-1 - bits->bitPtr))&1;
-}
-
-EXPORT void speex_bits_advance(SpeexBits *bits, int n)
-{
- if (((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr+n>bits->nbBits) || bits->overflow){
- bits->overflow=1;
- return;
- }
- bits->charPtr += (bits->bitPtr+n) >> LOG2_BITS_PER_CHAR; /* divide by BITS_PER_CHAR */
- bits->bitPtr = (bits->bitPtr+n) & (BITS_PER_CHAR-1); /* modulo by BITS_PER_CHAR */
-}
-
-EXPORT int speex_bits_remaining(SpeexBits *bits)
-{
- if (bits->overflow)
- return -1;
- else
- return bits->nbBits-((bits->charPtr<<LOG2_BITS_PER_CHAR)+bits->bitPtr);
-}
-
-EXPORT int speex_bits_nbytes(SpeexBits *bits)
-{
- return ((bits->nbBits+BITS_PER_CHAR-1)>>LOG2_BITS_PER_CHAR);
-}
-
-EXPORT void speex_bits_insert_terminator(SpeexBits *bits)
-{
- if (bits->bitPtr)
- speex_bits_pack(bits, 0, 1);
- while (bits->bitPtr)
- speex_bits_pack(bits, 1, 1);
-}
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