author | Mikael Laine <mikael.laine@ixonos.com> |
Fri, 29 Jan 2010 14:08:33 +0200 | |
changeset 0 | 951a5db380a0 |
permissions | -rw-r--r-- |
0
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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/* |
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Committing the Video Editor package under the Eclipse Public License
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* Copyright (c) 2010 Ixonos Plc. |
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Committing the Video Editor package under the Eclipse Public License
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* All rights reserved. |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* This component and the accompanying materials are made available |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* under the terms of the "Eclipse Public License v1.0" |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* which accompanies this distribution, and is available |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Initial Contributors: |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Nokia Corporation - Initial contribution |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Contributors: |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Ixonos Plc |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Description: |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Block decoding functions. |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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*/ |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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|
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Committing the Video Editor package under the Eclipse Public License
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Committing the Video Editor package under the Eclipse Public License
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Committing the Video Editor package under the Eclipse Public License
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#include "h263dConfig.h" |
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Committing the Video Editor package under the Eclipse Public License
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|
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Committing the Video Editor package under the Eclipse Public License
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#include "decblock.h" |
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Committing the Video Editor package under the Eclipse Public License
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#include "blkfunc.h" |
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Committing the Video Editor package under the Eclipse Public License
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#include "viddemux.h" |
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Committing the Video Editor package under the Eclipse Public License
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#include "idct.h" |
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Committing the Video Editor package under the Eclipse Public License
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|
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Committing the Video Editor package under the Eclipse Public License
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|
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Committing the Video Editor package under the Eclipse Public License
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/* {{-output"dblfree.txt"}} */ |
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Committing the Video Editor package under the Eclipse Public License
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/* |
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* dblFree |
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Committing the Video Editor package under the Eclipse Public License
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* |
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Committing the Video Editor package under the Eclipse Public License
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* |
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Committing the Video Editor package under the Eclipse Public License
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* Parameters: |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* None. |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Function: |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* This function deinitializes the module. |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Any functions of this module must not be called after dblFree (except |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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* for dblLoad). |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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* |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Returns: |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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* >= 0 if succeeded |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* < 0 if failed |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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*/ |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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|
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Committing the Video Editor package under the Eclipse Public License
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int dblFree(void) |
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Committing the Video Editor package under the Eclipse Public License
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/* {{-output"dblfree.txt"}} */ |
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Committing the Video Editor package under the Eclipse Public License
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{ |
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Committing the Video Editor package under the Eclipse Public License
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return 0; |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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} |
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Committing the Video Editor package under the Eclipse Public License
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|
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Committing the Video Editor package under the Eclipse Public License
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|
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/* {{-output"dblload.txt"}} */ |
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Committing the Video Editor package under the Eclipse Public License
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/* |
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Committing the Video Editor package under the Eclipse Public License
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* dblLoad |
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Committing the Video Editor package under the Eclipse Public License
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* |
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Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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* |
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Committing the Video Editor package under the Eclipse Public License
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* Parameters: |
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Committing the Video Editor package under the Eclipse Public License
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* None. |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* Function: |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* This function initializes the module. |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* dblLoad has to be called before any other function of this module |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* is used. |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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* Returns: |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
Mikael Laine <mikael.laine@ixonos.com>
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* >= 0 if succeeded |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* < 0 if failed |
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Committing the Video Editor package under the Eclipse Public License
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* |
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Committing the Video Editor package under the Eclipse Public License
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*/ |
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Committing the Video Editor package under the Eclipse Public License
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|
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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int dblLoad(void) |
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Committing the Video Editor package under the Eclipse Public License
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/* {{-output"dblload.txt"}} */ |
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Committing the Video Editor package under the Eclipse Public License
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{ |
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Committing the Video Editor package under the Eclipse Public License
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return 0; |
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Committing the Video Editor package under the Eclipse Public License
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} |
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|
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|
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/* {{-output"dblIdctAndDequant.txt"}} */ |
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Committing the Video Editor package under the Eclipse Public License
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/* |
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Committing the Video Editor package under the Eclipse Public License
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* dblIdctAndDequant |
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Committing the Video Editor package under the Eclipse Public License
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* |
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Committing the Video Editor package under the Eclipse Public License
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* Parameters: |
951a5db380a0
Committing the Video Editor package under the Eclipse Public License
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* block block array (length 64) |
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Committing the Video Editor package under the Eclipse Public License
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* quant quantization information |
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Committing the Video Editor package under the Eclipse Public License
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* skip must be 1 if INTRADC is in the block, otherwise 0 |
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Committing the Video Editor package under the Eclipse Public License
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* |
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Committing the Video Editor package under the Eclipse Public License
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* Function: |
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Committing the Video Editor package under the Eclipse Public License
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* This function makes the dequantization, the clipping and the inverse |
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Committing the Video Editor package under the Eclipse Public License
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* cosine transform for the given block. |
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Committing the Video Editor package under the Eclipse Public License
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* |
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Committing the Video Editor package under the Eclipse Public License
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* Returns: |
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Committing the Video Editor package under the Eclipse Public License
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* Nothing. |
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Committing the Video Editor package under the Eclipse Public License
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* |
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Committing the Video Editor package under the Eclipse Public License
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* Error codes: |
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Committing the Video Editor package under the Eclipse Public License
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* None. |
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Committing the Video Editor package under the Eclipse Public License
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* |
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*/ |
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Committing the Video Editor package under the Eclipse Public License
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|
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void dblIdctAndDequant(int *block, int quant, int skip) |
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/* {{-output"dblIdctAndDequant.txt"}} */ |
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Committing the Video Editor package under the Eclipse Public License
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{ |
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Committing the Video Editor package under the Eclipse Public License
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|
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Committing the Video Editor package under the Eclipse Public License
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int rec, i, *tmpBlock, level; |
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|
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/* See section 6.2.1 of H.263 Recommendation for Inverse Quantization |
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formulas. */ |
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Committing the Video Editor package under the Eclipse Public License
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|
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/* If odd quantization parameter */ |
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Committing the Video Editor package under the Eclipse Public License
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if (quant & 1) { |
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Committing the Video Editor package under the Eclipse Public License
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|
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for (i = 64 - skip, tmpBlock = block + skip; i; i--, tmpBlock++) { |
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Committing the Video Editor package under the Eclipse Public License
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|
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if (!(*tmpBlock)) |
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Committing the Video Editor package under the Eclipse Public License
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continue; |
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Committing the Video Editor package under the Eclipse Public License
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|
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Committing the Video Editor package under the Eclipse Public License
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level = *tmpBlock; |
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|
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if (level > 0) { |
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rec = quant * ((level << 1) + 1); |
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*tmpBlock = (rec < 2048) ? rec : 2047; |
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} |
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126 |
|
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else { |
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rec = -(quant * (((-level) << 1) + 1)); |
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*tmpBlock = (rec < -2048) ? -2048 : rec; |
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} |
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} |
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132 |
} |
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133 |
|
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134 |
/* Else even quantization parameter */ |
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135 |
else { |
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136 |
|
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137 |
/* For loop copy-pasted from the previous case due to speed |
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optimization */ |
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for (i = 64 - skip, tmpBlock = block + skip; i; i--, tmpBlock++) { |
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|
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if (!(*tmpBlock)) |
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142 |
continue; |
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143 |
|
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level = *tmpBlock; |
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145 |
|
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if (level > 0) { |
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rec = quant * ((level << 1) + 1) - 1; |
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*tmpBlock = (rec < 2048) ? rec : 2047; |
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149 |
} |
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150 |
|
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151 |
else { |
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rec = -(quant * (((-level) << 1) + 1) - 1); |
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*tmpBlock = (rec < -2048) ? -2048 : rec; |
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154 |
} |
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155 |
} |
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Committing the Video Editor package under the Eclipse Public License
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156 |
} |
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157 |
idct(block); |
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158 |
} |
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159 |
|
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160 |
|
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161 |
/* |
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162 |
* dblIdct |
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* |
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164 |
* Parameters: |
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165 |
* block block array (length 64) |
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166 |
* |
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167 |
* Function: |
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168 |
* This function makes the inverse |
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169 |
* cosine transform for the given block. |
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170 |
* |
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171 |
* Returns: |
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172 |
* Nothing. |
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173 |
* |
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174 |
* Error codes: |
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175 |
* None. |
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176 |
* |
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177 |
*/ |
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178 |
|
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179 |
void dblIdct(int *block) |
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180 |
|
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181 |
{ |
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182 |
idct(block); |
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183 |
} |
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184 |
// End of File |