diff options
Diffstat (limited to 'media/libstagefright/codecs/aacdec/buf_getbits.cpp')
| -rw-r--r-- | media/libstagefright/codecs/aacdec/buf_getbits.cpp | 167 |
1 files changed, 0 insertions, 167 deletions
diff --git a/media/libstagefright/codecs/aacdec/buf_getbits.cpp b/media/libstagefright/codecs/aacdec/buf_getbits.cpp deleted file mode 100644 index 34f4f60..0000000 --- a/media/libstagefright/codecs/aacdec/buf_getbits.cpp +++ /dev/null @@ -1,167 +0,0 @@ -/* ------------------------------------------------------------------ - * Copyright (C) 1998-2009 PacketVideo - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either - * express or implied. - * See the License for the specific language governing permissions - * and limitations under the License. - * ------------------------------------------------------------------- - */ -/* - - Filename: buf_getbits.c - ------------------------------------------------------------------------------- - REVISION HISTORY - - - Who: Date: MM/DD/YYYY - Description: - ------------------------------------------------------------------------------- - INPUT AND OUTPUT DEFINITIONS - - Arguments: hBitBuf Handle to Bitbuffer - n Number of bits to read - - Return: bits - - ------------------------------------------------------------------------------- - FUNCTION DESCRIPTION - - Reads n bits from Bitbuffer - ------------------------------------------------------------------------------- - REQUIREMENTS - - ------------------------------------------------------------------------------- - REFERENCES - -SC 29 Software Copyright Licencing Disclaimer: - -This software module was originally developed by - Coding Technologies - -and edited by - - - -in the course of development of the ISO/IEC 13818-7 and ISO/IEC 14496-3 -standards for reference purposes and its performance may not have been -optimized. This software module is an implementation of one or more tools as -specified by the ISO/IEC 13818-7 and ISO/IEC 14496-3 standards. -ISO/IEC gives users free license to this software module or modifications -thereof for use in products claiming conformance to audiovisual and -image-coding related ITU Recommendations and/or ISO/IEC International -Standards. ISO/IEC gives users the same free license to this software module or -modifications thereof for research purposes and further ISO/IEC standardisation. -Those intending to use this software module in products are advised that its -use may infringe existing patents. ISO/IEC have no liability for use of this -software module or modifications thereof. Copyright is not released for -products that do not conform to audiovisual and image-coding related ITU -Recommendations and/or ISO/IEC International Standards. -The original developer retains full right to modify and use the code for its -own purpose, assign or donate the code to a third party and to inhibit third -parties from using the code for products that do not conform to audiovisual and -image-coding related ITU Recommendations and/or ISO/IEC International Standards. -This copyright notice must be included in all copies or derivative works. -Copyright (c) ISO/IEC 2002. - ------------------------------------------------------------------------------- - PSEUDO-CODE - ------------------------------------------------------------------------------- -*/ - - -/*---------------------------------------------------------------------------- -; INCLUDES -----------------------------------------------------------------------------*/ - -#ifdef AAC_PLUS - -#include "buf_getbits.h" - -/*---------------------------------------------------------------------------- -; MACROS -; Define module specific macros here -----------------------------------------------------------------------------*/ - - -/*---------------------------------------------------------------------------- -; DEFINES -; Include all pre-processor statements here. Include conditional -; compile variables also. -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; LOCAL FUNCTION DEFINITIONS -; Function Prototype declaration -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; LOCAL STORE/BUFFER/POINTER DEFINITIONS -; Variable declaration - defined here and used outside this module -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; EXTERNAL FUNCTION REFERENCES -; Declare functions defined elsewhere and referenced in this module -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; EXTERNAL GLOBAL STORE/BUFFER/POINTER REFERENCES -; Declare variables used in this module but defined elsewhere -----------------------------------------------------------------------------*/ - -/*---------------------------------------------------------------------------- -; FUNCTION CODE -----------------------------------------------------------------------------*/ - -UInt32 buf_getbits(BIT_BUFFER * hBitBuf, Int32 n) -{ - - /* read bits from MSB side */ - if (hBitBuf->buffered_bits <= 16) - { - hBitBuf->buffer_word = (hBitBuf->buffer_word << 16) | (*(hBitBuf->char_ptr++) << 8); - hBitBuf->buffer_word |= *(hBitBuf->char_ptr++); - hBitBuf->buffered_bits += 16; - } - - hBitBuf->buffered_bits -= n; - hBitBuf->nrBitsRead += n; - - return ((hBitBuf->buffer_word >> hBitBuf->buffered_bits) & ((1 << n) - 1)); - -} - - -UInt32 buf_get_1bit(BIT_BUFFER * hBitBuf) -{ - - /* read bits from MSB side */ - if (hBitBuf->buffered_bits <= 16) - { - hBitBuf->buffer_word = (hBitBuf->buffer_word << 16) | (*(hBitBuf->char_ptr++) << 8); - hBitBuf->buffer_word |= *(hBitBuf->char_ptr++); - hBitBuf->buffered_bits += 16; - } - - hBitBuf->buffered_bits--; - hBitBuf->nrBitsRead++; - - return ((hBitBuf->buffer_word >> hBitBuf->buffered_bits) & 1); - -} - -#endif |