--- a/videoeditorengine/avcedit/src/dpb.cpp	Fri Jan 29 14:08:33 2010 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,574 +0,0 @@
-/*
-* Copyright (c) 2010 Ixonos Plc.
-* All rights reserved.
-* This component and the accompanying materials are made available
-* under the terms of the "Eclipse Public License v1.0"
-* which accompanies this distribution, and is available
-* at the URL "http://www.eclipse.org/legal/epl-v10.html".
-*
-* Initial Contributors:
-* Nokia Corporation - Initial contribution
-*
-* Contributors:
-* Ixonos Plc
-*
-* Description:
-*
-*/
-
-
-#include <string.h>
-#include "globals.h"
-#include "framebuffer.h"
-#include "dpb.h"
-
-
-
-/*
- *
- * dpbOpen:
- *
- * Parameters:
- *
- * Function:
- *      Allocate DPB.
- *
- * Returns:
- *      Pointer to dpb or NULL
- *
- */
-dpb_s *dpbOpen()
-{
-  dpb_s *dpb;
-
-  dpb = (dpb_s *)User::Alloc(sizeof(dpb_s));
-
-  if (dpb != NULL)
-    memset(dpb, 0, sizeof(dpb_s));
-
-  return dpb;
-}
-
-
-/*
- *
- * dpbClose:
- *
- * Parameters:
- *      dpb                   DPB object
- *
- * Function:
- *      Deinitialize DPB.
- *
- * Returns:
- *      -
- *
- */
-void dpbClose(dpb_s *dpb)
-{
-  int i;
-
-  for (i = 0; i < DPB_MAX_SIZE; i++)
-    frmCloseRef(dpb->buffers[i]);
-
-  User::Free(dpb);
-}
-
-
-/*
- *
- * dpbSetSize:
- *
- * Parameters:
- *      dpb                   DPB object
- *      dpbSize               New DPB size
- *
- * Function:
- *      Set DPB size in frames.
- *
- * Returns:
- *      -
- *
- */
-void dpbSetSize(dpb_s *dpb, int dpbSize)
-{
-  int i;
-
-  /* If new DPB size is smaller than old, close any unneeded frame buffers */
-  for (i = dpbSize; i < dpb->size; i++) {
-    frmCloseRef(dpb->buffers[i]);
-    dpb->buffers[i] = NULL;
-  }
-
-  dpb->size = min(dpbSize, DPB_MAX_SIZE);
-}
-
-
-/*
- *
- * dpbGetNextOutputPic:
- *
- * Parameters:
- *      dpb                   DPB object
- *      dpbHasIDRorMMCO5      Set upon return if IDR picture or picture with
- *                            MMCO5 command is found in DPB
- *
- * Function:
- *      Find next frame to output (frame with the lowest POC).
- *      Search is started from the last active frame in dpb and is
- *      stopped if all frames have been checked or IDR picture or
- *      picture with MMCO5 is found.
- *
- * Returns:
- *      Framebuffer with the lowest POC or 0 if DPB is empty
- *
- */
-frmBuf_s *dpbGetNextOutputPic(dpb_s *dpb, int *dpbHasIDRorMMCO5)
-{
-  frmBuf_s * tmpFrm;
-  int i;
-
-  tmpFrm = 0;
-
-  /* Find first output pic in decoding order */
-  for (i = dpb->fullness-1; i >= 0; i--) {
-    if (dpb->buffers[i]->forOutput) {
-      tmpFrm = dpb->buffers[i];
-      break;
-    }
-  }
-
-  *dpbHasIDRorMMCO5 = 0;
-
-  /* Find picture with lowest poc. Stop search if IDR or MMCO5 is found */
-  for (; i >= 0; i--) {
-    if (dpb->buffers[i]->isIDR || dpb->buffers[i]->hasMMCO5) {
-      *dpbHasIDRorMMCO5 = 1;
-      break;
-    }
-    if (dpb->buffers[i]->forOutput && dpb->buffers[i]->poc < tmpFrm->poc)
-      tmpFrm = dpb->buffers[i];
-  }
-
-  return tmpFrm;
-}
-
-
-/*
- *
- * dpbStorePicture:
- *
- * Parameters:
- *      dpb                   DPB object
- *      currPic               Current picture
- *      outputQueue           Output queue
- *
- * Function:
- *      - Remove unused frames (non-reference, non-output frames) from the DPB.
- *      - If there is room in the DPB, put picture to DPB.
- *      - If there is no room in DPB, put pictures to output queue
- *        until frame is available.
- *
- * Returns:
- *      The number of pictures in output queue or negative value for error.
- *
- */
-int dpbStorePicture(dpb_s *dpb, frmBuf_s *currPic, frmBuf_s *outputQueue[])
-{
-  frmBuf_s *tmpRemList[DPB_MAX_SIZE];
-  frmBuf_s *tmpFrm;
-  int numFrm, numRemFrm;
-  int i;
-  int freeBufferFound;
-  int numOutput;
-  int dpbHasIDRorMMCO5;
-
-  /*
-   * If the current picture is a reference picture and DPB is already full of
-   * reference pictures, we cannot insert current picture to DPB. Therefore,
-   * we force one reference picture out of DPB to make space for current
-   * picture. This situation can only happen with corrupted bitstreams.
-   */
-  if (currPic->refType != FRM_NON_REF_PIC &&
-      (dpb->numShortTermPics+dpb->numLongTermPics) == dpb->size)
-  {
-    if (dpb->numLongTermPics == dpb->size)
-      dpb->buffers[dpb->fullness-1]->refType = FRM_NON_REF_PIC;
-    else
-      dpbMarkLowestShortTermPicAsNonRef(dpb);
-  }
-
-  /*
-   * Remove unused frames from dpb
-   */
-
-  numFrm = 0;
-  numRemFrm = 0;
-  for (i = 0; i < dpb->fullness; i++) {
-    if (dpb->buffers[i]->refType != FRM_NON_REF_PIC || dpb->buffers[i]->forOutput) {
-      dpb->buffers[numFrm] = dpb->buffers[i];
-      numFrm++;
-    }
-    else {
-      /* Put unsused pics to temporary list */
-      tmpRemList[numRemFrm] = dpb->buffers[i];
-      numRemFrm++;
-    }
-  }
-
-  /* Copy unused pics after active pics */
-  for (i = 0; i < numRemFrm; i++)
-    dpb->buffers[numFrm+i] = tmpRemList[i];
-
-  dpb->fullness = numFrm;
-
-
-  /*
-   * Try to store current pic to dpb. If there is no room in dpb, we have to
-   * output some pictures to make room.
-   */
-
-  /* Case 1: if current pic is unused, it won't be stored in dpb */
-  if (currPic->refType == FRM_NON_REF_PIC && !currPic->forOutput) {
-    return 0;
-  }
-
-  /* Case 2: if there is space left in dpb, store current pic */
-  if (dpb->fullness < dpb->size) {
-
-    tmpFrm = dpb->buffers[dpb->fullness];   /* Unused frame */
-
-    tmpFrm = frmMakeRefFrame(currPic, tmpFrm);
-    if (tmpFrm == NULL)
-      return DPB_ERR_MEM_ALLOC;
-
-    /* Move frames one position toward end of the list */
-    for (i = dpb->fullness; i > 0; i--)
-      dpb->buffers[i] = dpb->buffers[i-1];
-
-    /* Always insert new frame to the beginning of the list */
-    dpb->buffers[0] = tmpFrm;
-    dpb->fullness++;
-
-    if (currPic->refType == FRM_SHORT_TERM_PIC)
-      dpb->numShortTermPics++;
-    else if (currPic->refType == FRM_LONG_TERM_PIC)
-      dpb->numLongTermPics++;
-
-    /* Current picture is marked unused */
-    currPic->forOutput = 0;
-    currPic->refType   = FRM_NON_REF_PIC;
-
-    /* No pictures in ouput queue */
-    return 0;
-  }
-
-  /* Case 3: output pictures with bumping process until there is space in dpb or
-  *  current pic is non-reference and has lowest poc */
-  freeBufferFound = 0;
-  numOutput       = 0;
-  while (!freeBufferFound) {
-
-    /* Next picture to output is a picture having smallest POC in DPB */
-    tmpFrm = dpbGetNextOutputPic(dpb, &dpbHasIDRorMMCO5);
-
-    /* Current picture is output if it is non-reference picture having */
-    /* smaller POC than any of the pictures in DPB                     */
-    if (currPic->refType == FRM_NON_REF_PIC &&
-        (tmpFrm == 0 || (!dpbHasIDRorMMCO5 && currPic->poc < tmpFrm->poc)))
-    {
-      /* Output current picture  */
-      currPic->forOutput = 0;
-      outputQueue[numOutput] = currPic;
-      numOutput++;
-      freeBufferFound = 1;
-    }
-    else {
-      /* Output picture that we got from DPB */
-      tmpFrm->forOutput = 0;
-      outputQueue[numOutput] = tmpFrm;
-      numOutput++;
-      if (tmpFrm->refType == FRM_NON_REF_PIC)
-        freeBufferFound = 1;
-    }
-  }
-
-  return numOutput;
-}
-
-
-/*
- *
- * dpbUpdatePicNums:
- *
- * Parameters:
- *      dpb                   DPB object
- *      frameNum              Current picture frame number
- *      maxFrameNum           Maximum frame number
- *
- * Function:
- *      Compute picture numbers for all pictures in DPB.
- *
- * Returns:
- *      -
- *
- */
-void dpbUpdatePicNums(dpb_s *dpb, int32 frameNum, int32 maxFrameNum)
-{
-  int i;
-  frmBuf_s **refPicList;
-
-  refPicList = dpb->buffers;
-
-  for (i = 0; i < dpb->fullness; i++) {
-    if (refPicList[i]->refType == FRM_SHORT_TERM_PIC) {
-      /* Short term pictures */
-      if (refPicList[i]->frameNum > frameNum)
-        refPicList[i]->picNum = refPicList[i]->frameNum - maxFrameNum;
-      else
-        refPicList[i]->picNum = refPicList[i]->frameNum;
-    }
-    else if (refPicList[i]->refType == FRM_LONG_TERM_PIC)
-      /* Long term pictures */
-      refPicList[i]->longTermPicNum = refPicList[i]->longTermFrmIdx;
-  }
-}
-
-
-/*
- *
- * dpbMarkAllPicsAsNonRef:
- *
- * Parameters:
- *      dpb                   DPB object
- *
- * Function:
- *      Mark all picrures as non-reference pictures.
- *
- * Returns:
- *      -
- *
- */
-void dpbMarkAllPicsAsNonRef(dpb_s *dpb)
-{
-  int i;
-
-  /* Mark all pictures as not used for reference */
-  for (i = 0; i < dpb->fullness; i++)
-    dpb->buffers[i]->refType = FRM_NON_REF_PIC;
-
-  dpb->numShortTermPics = 0;
-  dpb->numLongTermPics  = 0;
-}
-
-
-/*
- *
- * dpbMarkLowestShortTermPicAsNonRef:
- *
- * Parameters:
- *      dpb                   DPB object
- *
- * Function:
- *      Mark short-term picture having lowest picture number as
- *      non-reference pictures.
- *
- * Returns:
- *      -
- *
- */
-void dpbMarkLowestShortTermPicAsNonRef(dpb_s *dpb)
-{
-  int picIdx;
-  int i;
-
-  /* Find short term pic with lowest picNum */
-  picIdx = -1;
-  for (i = dpb->fullness-1; i >= 0; i--) {
-    if (dpb->buffers[i]->refType == FRM_SHORT_TERM_PIC &&
-        (picIdx < 0 || dpb->buffers[i]->picNum < dpb->buffers[picIdx]->picNum))
-      picIdx = i;
-  }
-
-  /* Mark short term pic with lowest picNum as not reference picture */
-  if (picIdx >= 0) {
-    dpb->buffers[picIdx]->refType = FRM_NON_REF_PIC;
-    dpb->numShortTermPics--;
-  }
-}
-
-
-/*
- *
- * dpbMarkShortTermPicAsNonRef:
- *
- * Parameters:
- *      dpb                   DPB object
- *      picNum                Picture number
- *
- * Function:
- *      Mark short-term picture having picture number picNum as
- *      non-reference picture.
- *
- * Returns:
- *      DPB_OK or DPB_ERR_PICTURE_NOT_FOUND
- *
- */
-int dpbMarkShortTermPicAsNonRef(dpb_s *dpb, int32 picNum)
-{
-  int i;
-
-  for (i = 0; i < dpb->fullness; i++) {
-    if (dpb->buffers[i]->refType == FRM_SHORT_TERM_PIC &&
-        dpb->buffers[i]->picNum == picNum)
-    {
-      dpb->buffers[i]->refType = FRM_NON_REF_PIC;
-      dpb->numShortTermPics--;
-      return DPB_OK;
-    }
-  }
-
-  return DPB_ERR_PICTURE_NOT_FOUND;
-}
-
-
-/*
- *
- * dpbMarkLongTermPicAsNonRef:
- *
- * Parameters:
- *      dpb                   DPB object
- *      longTermPicNum        Long-term picture number
- *
- * Function:
- *      Mark long-term picture having long-term picture number longTermPicNum
- *      as non-reference picture.
- *
- * Returns:
- *      DPB_OK or DPB_ERR_PICTURE_NOT_FOUND
- *
- */
-int dpbMarkLongTermPicAsNonRef(dpb_s *dpb, int longTermPicNum)
-{
-  int i;
-
-  for (i = 0; i < dpb->fullness; i++) {
-    if (dpb->buffers[i]->refType == FRM_LONG_TERM_PIC &&
-        dpb->buffers[i]->longTermPicNum == longTermPicNum)
-    {
-      dpb->buffers[i]->refType = FRM_NON_REF_PIC;
-      dpb->numLongTermPics--;
-      return DPB_OK;
-    }
-  }
-
-  return DPB_ERR_PICTURE_NOT_FOUND;
-}
-
-
-/*
- *
- * dpbVerifyLongTermFrmIdx:
- *
- * Parameters:
- *      dpb                   DPB object
- *      longTermFrmIdx        Long-term frame index
- *
- * Function:
- *      If there is a long-term picture having long term frame index
- *      longTermFrmIdx, mark that picture as non-reference picture.
- *
- * Returns:
- *      -
- *
- */
-void dpbVerifyLongTermFrmIdx(dpb_s *dpb, int longTermFrmIdx)
-{
-  int i;
-
-  /* Check if longTermFrmIdx is already in use */
-  for (i = 0; i < dpb->fullness; i++) {
-    if (dpb->buffers[i]->refType == FRM_LONG_TERM_PIC &&
-        dpb->buffers[i]->longTermFrmIdx == longTermFrmIdx)
-    {
-      dpb->buffers[i]->refType = FRM_NON_REF_PIC;
-      dpb->numLongTermPics--;
-      break;
-    }
-  }
-}
-
-
-/*
- *
- * dpbMarkShortTermPicAsLongTerm:
- *
- * Parameters:
- *      dpb                   DPB object
- *      picNum                Picture number
- *      longTermFrmIdx        Long-term frame index
- *
- * Function:
- *      Mark short-term picture having picture number picNum as long-term
- *      picture having long-term frame index longTermFrmIdx.
- *
- * Returns:
- *      DPB_OK or DPB_ERR_PICTURE_NOT_FOUND
- *
- */
-int dpbMarkShortTermPicAsLongTerm(dpb_s *dpb, int32 picNum, int longTermFrmIdx)
-{
-  int i;
-
-  /* To avoid duplicate of longTermFrmIdx */
-  dpbVerifyLongTermFrmIdx(dpb, longTermFrmIdx);
-
-  /* Mark pic with picNum as long term and assign longTermFrmIdx to it */
-  for (i = 0; i < dpb->fullness; i++) {
-    if (dpb->buffers[i]->refType == FRM_SHORT_TERM_PIC &&
-        dpb->buffers[i]->picNum == picNum)
-    {
-      dpb->buffers[i]->refType = FRM_LONG_TERM_PIC;
-      dpb->buffers[i]->longTermFrmIdx = longTermFrmIdx;
-      dpb->numShortTermPics--;
-      dpb->numLongTermPics++;
-      return DPB_OK;
-    }
-  }
-
-  return DPB_ERR_PICTURE_NOT_FOUND;
-}
-
-
-/*
- *
- * dpbSetMaxLongTermFrameIdx:
- *
- * Parameters:
- *      dpb                     DPB object
- *      maxLongTermFrmIdxPlus1  Maximum long-term frame index plus 1
- *
- * Function:
- *      Set maximum long-term frame index. All long-term pictures having
- *      bigger long-term frame index than maxLongTermFrmIdxPlus1-1 are
- *      marked as non-reference pictures.
- *
- * Returns:
- *      -
- *
- */
-void dpbSetMaxLongTermFrameIdx(dpb_s *dpb, int maxLongTermFrmIdxPlus1)
-{
-  int i;
-
-  for (i = 0; i < dpb->fullness; i++) {
-    if (dpb->buffers[i]->refType == FRM_LONG_TERM_PIC &&
-        dpb->buffers[i]->longTermFrmIdx > maxLongTermFrmIdxPlus1-1)
-    {
-      dpb->buffers[i]->refType = FRM_NON_REF_PIC;
-      dpb->numLongTermPics--;
-    }
-  }
-
-  dpb->maxLongTermFrameIdx = maxLongTermFrmIdxPlus1 - 1;
-}