author | Mikael Laine <mikael.laine@ixonos.com> |
Fri, 29 Jan 2010 14:08:33 +0200 | |
changeset 0 | 951a5db380a0 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 Ixonos Plc. |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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Committing the Video Editor package under the Eclipse Public License
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* Initial Contributors: |
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Committing the Video Editor package under the Eclipse Public License
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* Nokia Corporation - Initial contribution |
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Committing the Video Editor package under the Eclipse Public License
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* |
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* Contributors: |
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Committing the Video Editor package under the Eclipse Public License
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* Ixonos Plc |
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Committing the Video Editor package under the Eclipse Public License
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* |
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* Description: |
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* Block handling. |
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* |
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*/ |
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|
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#ifndef _BLOCK_H_ |
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#define _BLOCK_H_ |
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|
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#include "epoclib.h" |
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#include "vdcmvc.h" |
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/* |
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* Definitions |
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*/ |
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/* |
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* Structs and typedefs |
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*/ |
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/* {{-output"blcDiffMB_t_info.txt" -ignore"*" -noCR}} |
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blcDiffMB_t is used as a temporary storage for the previous difference |
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(INTER) macroblock. This storage is needed for the Advanced Prediction |
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Committing the Video Editor package under the Eclipse Public License
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mode because the previous prediction macroblock cannot be constructed |
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Committing the Video Editor package under the Eclipse Public License
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until the motion vectors of the current macroblock have been fetched |
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from the bitstream. (The previous difference macroblock cannot be stored |
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directly to the current frame either, because the difference block data |
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is signed and the frame data is unsigned.) |
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{{-output"blcDiffMB_t_info.txt"}} */ |
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/* {{-output"blcDiffMB_t.txt"}} */ |
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typedef struct { |
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int block[4][64]; /* luminance blocks for P frame */ |
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int cbpy; /* coded block pattern for luminance */ |
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} blcDiffMB_t; |
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/* {{-output"blcDiffMB_t.txt"}} */ |
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|
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/* {{-output"BLC_COPY_PREDICTION_MB_PARAM_info.txt" -ignore"*" -noCR}} |
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This C preprocessor definition is used to store the parameters needed |
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for the blcCopyPredictionMB function (and therefore also for |
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the blcCopyPredictionMBParam_t data type). These parameters may also be used |
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in other modules than the Block Tools and in other data structures than |
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blcCopyPredictionMBParam_t. When these parameters are introduced with this |
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preprocessor definition in the other data structures, one does not need |
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the "extra" reference step which would be needed if the parameters |
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would have been introduced directly and only in |
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the blcCopyPredictionMBParam_t structure. For example, if otherStructA |
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has been typedefd as {BLC_COPY_PREDICTION_MB_PARAM} and otherStructB as |
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{blcCopyPredictionMBParam_t predPar;}, to access e.g. refY one has to use |
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either otherStructA.refY or otherStructB.predPar.refY. |
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{{-output"BLC_COPY_PREDICTION_MB_PARAM_info.txt"}} */ |
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|
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/* {{-output"BLC_COPY_PREDICTION_MB_PARAM.txt"}} */ |
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#define BLC_COPY_PREDICTION_MB_PARAM \ |
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u_char *refY; /* Reference frame */ \ |
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u_char *refU; \ |
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u_char *refV; \ |
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\ |
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u_char *currYMBInFrame; /* Pointer to current macroblock in frame */ \ |
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u_char *currUBlkInFrame; \ |
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u_char *currVBlkInFrame; \ |
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\ |
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int uvBlkXCoord; /* X coord of MB in chrominance pixels */ \ |
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int uvBlkYCoord; /* Y coord of MB (top-left corner) in */ \ |
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/* chrominance pixels */ \ |
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\ |
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int uvWidth; /* Width of the picture in chro pixels */ \ |
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int uvHeight; /* Height of the picture in chro pixels */ \ |
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\ |
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mvcData_t *mvcData; /* Motion Vector Count module instance data */ \ |
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\ |
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int *mvx; /* Array of 4 x-components of motion vectors */ \ |
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int *mvy; /* Array of 4 y-components of motion vectors */ \ |
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/* If not in 4-MVs-mode, only the first entry */ \ |
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/* of the both arrays is used. */ \ |
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\ |
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int mbPlace; /* Indicates the place of the current */ \ |
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/* macroblock inside the macroblock row: */ \ |
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/* -1 beginning of row */ \ |
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/* 0 middle of row */ \ |
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/* 1 end of row */ \ |
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/* If Annex K is in use */ \ |
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/* -1 beginning of row or slice */ \ |
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/* 0 middle of slice */ \ |
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/* 1 end of row(if not the beginning of */ \ |
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/* the slice) or slice */ \ |
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/* 2 end of row and the beginning of slice */ \ |
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\ |
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int fAdvancedPrediction; /* Non-zero if Advanced Prediction is used */ \ |
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\ |
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int fMVsOverPictureBoundaries; \ |
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/* Non-zero if MVs are allowed to point */ \ |
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/* outside picture boundaries */ \ |
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\ |
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blcDiffMB_t *diffMB; /* Prediction error for the previous MB */ \ |
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\ |
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int rcontrol; /* RCONTROL (section 6.1.2 of H.263) */ \ |
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\ |
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int fourMVs; /* Flag to indicate if there is four motion |
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vectors per macroblock */ |
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/* {{-output"BLC_COPY_PREDICTION_MB_PARAM.txt"}} */ |
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/* {{-output"blcCopyPredictionMBParam_t_info.txt" -ignore"*" -noCR}} |
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This structure is used to pass parameters into the blcCopyPredictionMB |
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function. |
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{{-output"blcCopyPredictionMBParam_t_info.txt"}} */ |
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/* {{-output"blcCopyPredictionMBParam_t.txt"}} */ |
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typedef struct { |
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BLC_COPY_PREDICTION_MB_PARAM |
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} blcCopyPredictionMBParam_t; |
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/* {{-output"blcCopyPredictionMBParam_t.txt"}} */ |
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/* |
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* Function prototypes |
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*/ |
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void blcAddBlock(int *block, |
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u_char HUGE *frame_p, |
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int xSize, |
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int mbPlace, u_char fourMVs, int *prevDiffBlock); |
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void blcBlockToFrame(int *block, |
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u_char HUGE *frame_p, |
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int xSize); |
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int blcCopyPredictionMB(blcCopyPredictionMBParam_t *param); |
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#endif |
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// End of file |