/*COPYRIGHT, LICENSE AND WARRANTY INFORMATIONThis software module has been originally developed by Nokia Corporation. Provided that a person, entity or a company willing to use the Software (hereinafter Licensee) comply with all the terms and conditions of this Statement and subject to the limitations set forth in this Statement Nokia grants to such Licensee a non-exclusive, sub-licensable, worldwide, limited license under copyrights owned by Nokia to use the Software for the sole purpose of creating, manufacturing, selling, marketing, or  distributing (including the right to make modifications to the Software) a fully compliant decoder implementation (hereinafter "Decoder") of ITU-T Recommendation H.264 / ISO/IEC International Standard 14496-10 and an encoder implementation producing output that is decodable with the Decoder.Nokia retains the ownership of copyrights to the Software. 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THE SOFTWARE IS PROVIDED "AS IS" AND THE ORIGINAL DEVELOPER DISCLAIMS ANY AND ALL WARRANTIES WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. THOSE INTENDING TO USE THE SOFTWARE ARE EXPRESSLY ADVISED THAT ITS USE MAY INFRINGE EXISTING PATENTS AND BE SUBJECT TO ROYALTY PAYMENTS TO PATENT OWNERS. ANYONE USING THE SOFTWARE ON THE BASIS OF THIS LICENSE AGREES TO OBTAIN THE NECESSARY PERMISSIONS FROM ANY AND ALL APPLICABLE PATENT OWNERS FOR SUCH USE.IN NO EVENT SHALL THE ORIGINAL DEVELOPER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.This copyright, license and warranty information notice must be retained in all copies and derivative works of the Software or substantial portions thereof.*/#include <limits.h>#include "globals.h"#include "debug.h"#include "intrapred.h"extern const u_int8 clip8Buf[768];/* * * iprPredLuma16x16: * * Parameters: *      predBlk               Storage for predicted pixels *      modeAvail             Will contains flags indicating available *                            modes for current macroblock *      reco                  Reconstruction pixels *      picWidth              Horizontal size of the frame *      mbAvailMap            Indicate which of the 4 neighbors are available * * Function: *      Make 16x16 intra prediction for given macroblock. * * Returns: *      DC of the boundary pixels * */int iprGetPredLuma16x16(u_int8 predBlk[IPR_NUM_MODES2][MBK_SIZE][MBK_SIZE],                        int    *modeAvail,                         u_int8 *reco,                         int    picWidth,                        int    mbAvailMap[4]){  u_int32 dc;  int H, V;  int a, b, c;  int aTemp;  int i, j;  modeAvail[IPR_MODE2_VERT] = mbAvailMap[1];  modeAvail[IPR_MODE2_HOR]  = mbAvailMap[0];  modeAvail[IPR_MODE2_DC] = 1;  modeAvail[IPR_MODE2_PLANE] = mbAvailMap[0] & mbAvailMap[1] & mbAvailMap[3];  dc = 0;  /* HORIZONTAL PREDICTION */  if (modeAvail[IPR_MODE2_HOR]) {    for (j = 0; j < MBK_SIZE; j++)    {      u_int32 neighBor;      neighBor = reco[j * picWidth - 1];      dc += neighBor;      neighBor = neighBor | (neighBor << 8);      neighBor = neighBor | (neighBor << 16);      * ((u_int32 *) & predBlk[IPR_MODE2_HOR][j][0])  = neighBor;      * ((u_int32 *) & predBlk[IPR_MODE2_HOR][j][4])  = neighBor;      * ((u_int32 *) & predBlk[IPR_MODE2_HOR][j][8])  = neighBor;      * ((u_int32 *) & predBlk[IPR_MODE2_HOR][j][12]) = neighBor;    }  }  /* VERTICAL PREDICTION */  if (modeAvail[IPR_MODE2_VERT]) {    for (i = 0; i < MBK_SIZE; i += 4)    {      u_int32 neighBor;      neighBor = * (u_int32 *) & reco[-picWidth + i];      dc += neighBor & 0xFF;      dc += (neighBor >> 8)  & 0xFF;      dc += (neighBor >> 16) & 0xFF;      dc += (neighBor >> 24) & 0xFF;      for (j = 0; j < MBK_SIZE; j ++)        *((u_int32 *) & predBlk[IPR_MODE2_VERT][j][i]) = neighBor;    }  }  /* DC PREDICTION */  if (modeAvail[IPR_MODE2_HOR] && modeAvail[IPR_MODE2_VERT])    dc = (dc + 16) >> 5;  else if (modeAvail[IPR_MODE2_HOR] || modeAvail[IPR_MODE2_VERT])    dc = (dc + 8) >> 4;  else    dc = 128;  dc = dc | (dc << 8);  dc = dc | (dc << 16);  for (j = 0; j < MBK_SIZE; j++) {    *((u_int32 *) & predBlk[IPR_MODE2_DC][j][0])  = dc;    *((u_int32 *) & predBlk[IPR_MODE2_DC][j][4])  = dc;    *((u_int32 *) & predBlk[IPR_MODE2_DC][j][8])  = dc;    *((u_int32 *) & predBlk[IPR_MODE2_DC][j][12]) = dc;  }  /* PLANE PREDICTION */  if (modeAvail[IPR_MODE2_PLANE])  {    u_int8 *reco0, *reco1;    reco0 = & reco[   -picWidth + 7];    reco1 = & reco[7 * picWidth - 1];    for (H = 0, V = 0, i = 1; i <= 8; i++) {      H += i * ((int) reco0[i] -            (int) reco0[-i]);      V += i * ((int) reco1[i * picWidth] - (int) reco1[(-i) * picWidth]);    }    a = 16 * ((int) reco[15 * picWidth - 1] + (int) reco[-1 * picWidth + 15]);    b = (5 * H + 32) >> 6;    c = (5 * V + 32) >> 6;    // pre-compute constant, complete equation (a + b(i-7) + c(j-7) + 16) >> 5    a += 16 - 7 * (b + c);    for (j = 0; j < MBK_SIZE; j++) {      aTemp = a;      for (i = 0; i < MBK_SIZE; i++) {        predBlk[IPR_MODE2_PLANE][j][i] = clip8Buf[(aTemp >> 5) + 256];        aTemp += b;      }      a += c;    }  }  return ((int)dc&0xff);}//// LOW_COMPLEX_PROF3int iprGetPredLuma16x16_fast(u_int8 predBlk[IPR_NUM_MODES2][MBK_SIZE][MBK_SIZE],                        int    *modeAvail,                         u_int8 *reco,                         int    picWidth,                        int    mbAvailMap[4]){  u_int32 dc;  int i, j;  modeAvail[IPR_MODE2_VERT] = mbAvailMap[1];  modeAvail[IPR_MODE2_HOR]  = mbAvailMap[0];  modeAvail[IPR_MODE2_DC] = 1;  modeAvail[IPR_MODE2_PLANE] = mbAvailMap[0] & mbAvailMap[1] & mbAvailMap[3];  dc = 0;  /* HORIZONTAL PREDICTION */  if (modeAvail[IPR_MODE2_HOR]) {    for (j = 0; j < MBK_SIZE; j++)    {      u_int32 neighBor;      neighBor = reco[j * picWidth - 1];      dc += neighBor;      neighBor = neighBor | (neighBor << 8);      neighBor = neighBor | (neighBor << 16);      * ((u_int32 *) & predBlk[IPR_MODE2_HOR][j][0])  = neighBor;      * ((u_int32 *) & predBlk[IPR_MODE2_HOR][j][4])  = neighBor;      * ((u_int32 *) & predBlk[IPR_MODE2_HOR][j][8])  = neighBor;      * ((u_int32 *) & predBlk[IPR_MODE2_HOR][j][12]) = neighBor;    }  }  /* VERTICAL PREDICTION */  if (modeAvail[IPR_MODE2_VERT]) {    for (i = 0; i < MBK_SIZE; i += 4)    {      u_int32 neighBor;      neighBor = * (u_int32 *) & reco[-picWidth + i];      dc += neighBor & 0xFF;      dc += (neighBor >> 8)  & 0xFF;      dc += (neighBor >> 16) & 0xFF;      dc += (neighBor >> 24) & 0xFF;      for (j = 0; j < MBK_SIZE; j ++)        *((u_int32 *) & predBlk[IPR_MODE2_VERT][j][i]) = neighBor;    }  }  /* DC PREDICTION */  if (modeAvail[IPR_MODE2_HOR] && modeAvail[IPR_MODE2_VERT])    dc = (dc + 16) >> 5;  else if (modeAvail[IPR_MODE2_HOR] || modeAvail[IPR_MODE2_VERT])    dc = (dc + 8) >> 4;  else    dc = 128;  dc = dc | (dc << 8);  dc = dc | (dc << 16);  for (j = 0; j < MBK_SIZE; j++) {    *((u_int32 *) & predBlk[IPR_MODE2_DC][j][0])  = dc;    *((u_int32 *) & predBlk[IPR_MODE2_DC][j][4])  = dc;    *((u_int32 *) & predBlk[IPR_MODE2_DC][j][8])  = dc;    *((u_int32 *) & predBlk[IPR_MODE2_DC][j][12]) = dc;  }  return ((int)dc&0xff);}//////* * * iprGetPredLuma4x4: * * Parameters: *      predBlk               Storage for predicted pixels *      modeAvail             Will contains flags indicating available *                            modes for current block *      reco                  Points to macroblock in the reconstructed buffer  *      picWidth              Horizontal size of the frame *      leftMode              Prediction mode of the block to the left *      upMode                Prediction mode of the upper block *      cornersAvail          bit 1, up-right blk is available, bit 0, up-left is available * * Function: *      Make 4x4 intra prediction for given block. * * Returns: *      - * */void iprGetPredLuma4x4(u_int8 predBlk[][BLK_SIZE][MBK_SIZE],                        int    *modeAvail,                       u_int8 *reco,                        int    picWidth,                        int    leftMode,                        int    upMode,                        int    cornersAvail){  int X,A,B,C,D,E,F,G,H,I,J,K,L;  int dc;  int intTerm;  /*   * Copy reconstruction pixels used for prediction   */  if (cornersAvail & 0x01)    X = reco[-picWidth - 1];  else    X = 128;  if (upMode != IPR_MODE_NA) {    A = reco[-picWidth + 0];    B = reco[-picWidth + 1];    C = reco[-picWidth + 2];    D = reco[-picWidth + 3];    if (cornersAvail & 0x02) {      E = reco[-picWidth + 4];      F = reco[-picWidth + 5];      G = reco[-picWidth + 6];      H = reco[-picWidth + 7];    }    else      E = F = G = H = D;  }  else    A = B = C = D = E = F = G = H = 128;  if (leftMode != IPR_MODE_NA) {    I = reco[0 * picWidth - 1];