|
Packit |
8ff292 |
/*
|
|
Packit |
8ff292 |
* Copyright (c) 2010 The WebM project authors. All Rights Reserved.
|
|
Packit |
8ff292 |
*
|
|
Packit |
8ff292 |
* Use of this source code is governed by a BSD-style license
|
|
Packit |
8ff292 |
* that can be found in the dboolhuff.LICENSE file in this directory.
|
|
Packit |
8ff292 |
* See the libvpx original distribution for more information,
|
|
Packit |
8ff292 |
* including patent information, and author information.
|
|
Packit |
8ff292 |
*/
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
#include "dboolhuff.h"
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
#ifdef _MSC_VER
|
|
Packit |
8ff292 |
__declspec (align (16))
|
|
Packit |
8ff292 |
const unsigned char vp8_norm[256] = {
|
|
Packit |
8ff292 |
#else
|
|
Packit |
8ff292 |
const unsigned char vp8_norm[256] __attribute__ ((aligned (16))) = {
|
|
Packit |
8ff292 |
#endif
|
|
Packit |
8ff292 |
0, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4,
|
|
Packit |
8ff292 |
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
|
|
Packit |
8ff292 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
|
Packit |
8ff292 |
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
|
|
Packit |
8ff292 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
Packit |
8ff292 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
Packit |
8ff292 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
Packit |
8ff292 |
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
|
|
Packit |
8ff292 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
Packit |
8ff292 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
Packit |
8ff292 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
Packit |
8ff292 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
Packit |
8ff292 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
Packit |
8ff292 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
Packit |
8ff292 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
Packit |
8ff292 |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
int
|
|
Packit |
8ff292 |
vp8dx_start_decode (BOOL_DECODER * br,
|
|
Packit |
8ff292 |
const unsigned char *source, unsigned int source_sz)
|
|
Packit |
8ff292 |
{
|
|
Packit |
8ff292 |
br->user_buffer_end = source + source_sz;
|
|
Packit |
8ff292 |
br->user_buffer = source;
|
|
Packit |
8ff292 |
br->value = 0;
|
|
Packit |
8ff292 |
br->count = -8;
|
|
Packit |
8ff292 |
br->range = 255;
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
if (source_sz && !source)
|
|
Packit |
8ff292 |
return 1;
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
/* Populate the buffer */
|
|
Packit |
8ff292 |
vp8dx_bool_decoder_fill (br);
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
return 0;
|
|
Packit |
8ff292 |
}
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
void
|
|
Packit |
8ff292 |
vp8dx_bool_decoder_fill (BOOL_DECODER * br)
|
|
Packit |
8ff292 |
{
|
|
Packit |
8ff292 |
const unsigned char *bufptr;
|
|
Packit |
8ff292 |
const unsigned char *bufend;
|
|
Packit |
8ff292 |
VP8_BD_VALUE value;
|
|
Packit |
8ff292 |
int count;
|
|
Packit |
8ff292 |
bufend = br->user_buffer_end;
|
|
Packit |
8ff292 |
bufptr = br->user_buffer;
|
|
Packit |
8ff292 |
value = br->value;
|
|
Packit |
8ff292 |
count = br->count;
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
VP8DX_BOOL_DECODER_FILL (count, value, bufptr, bufend);
|
|
Packit |
8ff292 |
|
|
Packit |
8ff292 |
br->user_buffer = bufptr;
|
|
Packit |
8ff292 |
br->value = value;
|
|
Packit |
8ff292 |
br->count = count;
|
|
Packit |
8ff292 |
}
|