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Diffstat (limited to 'media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_GetVLCInfo.c')
| -rw-r--r-- | media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_GetVLCInfo.c | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_GetVLCInfo.c b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_GetVLCInfo.c deleted file mode 100644 index 81c59d6..0000000 --- a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p10/src/omxVCM4P10_GetVLCInfo.c +++ /dev/null @@ -1,192 +0,0 @@ -/** - * - * File Name: omxVCM4P10_GetVLCInfo.c - * OpenMAX DL: v1.0.2 - * Revision: 9641 - * Date: Thursday, February 7, 2008 - * - * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. - * - * - * Description: - * - * This function extracts run-length encoding (RLE) information - */ - -#include "omxtypes.h" -#include "armOMX.h" -#include "omxVC.h" - -#include "armCOMM.h" -#include "armVC.h" - -/** - * Function: omxVCM4P10_GetVLCInfo (6.3.5.9.1) - * - * Description: - * This function extracts run-length encoding (RLE) information from the - * coefficient matrix. The results are returned in an OMXVCM4P10VLCInfo - * structure. - * - * Input Arguments: - * - * pSrcCoeff - pointer to the transform coefficient matrix. 8-byte - * alignment required. - * pScanMatrix - pointer to the scan order definition matrix. For a luma - * block the scan matrix should follow [ISO14496-10] section 8.5.4, - * and should contain the values 0, 1, 4, 8, 5, 2, 3, 6, 9, 12, 13, - * 10, 7, 11, 14, 15. For a chroma block, the scan matrix should - * contain the values 0, 1, 2, 3. - * bAC - indicates presence of a DC coefficient; 0 = DC coefficient - * present, 1= DC coefficient absent. - * MaxNumCoef - specifies the number of coefficients contained in the - * transform coefficient matrix, pSrcCoeff. The value should be 16 - * for blocks of type LUMADC, LUMAAC, LUMALEVEL, and CHROMAAC. The - * value should be 4 for blocks of type CHROMADC. - * - * Output Arguments: - * - * pDstVLCInfo - pointer to structure that stores information for - * run-length coding. - * - * Return Value: - * - * OMX_Sts_NoErr - no error - * OMX_Sts_BadArgErr - bad arguments; returned if any of the following - * conditions are true: - * - at least one of the following pointers is NULL: - * pSrcCoeff, pScanMatrix, pDstVLCInfo - * - pSrcCoeff is not aligned on an 8-byte boundary - * - */ -OMXResult omxVCM4P10_GetVLCInfo ( - const OMX_S16* pSrcCoeff, - const OMX_U8* pScanMatrix, - OMX_U8 bAC, - OMX_U32 MaxNumCoef, - OMXVCM4P10VLCInfo* pDstVLCInfo -) -{ - OMX_INT i, MinIndex; - OMX_S32 Value; - OMX_U32 Mask = 4, RunBefore; - OMX_S16 *pLevel; - OMX_U8 *pRun; - OMX_S16 Buf [16]; - - /* check for argument error */ - armRetArgErrIf(pSrcCoeff == NULL, OMX_Sts_BadArgErr) - armRetArgErrIf(armNot8ByteAligned(pSrcCoeff), OMX_Sts_BadArgErr) - armRetArgErrIf(pScanMatrix == NULL, OMX_Sts_BadArgErr) - armRetArgErrIf(pDstVLCInfo == NULL, OMX_Sts_BadArgErr) - armRetArgErrIf(bAC > 1, OMX_Sts_BadArgErr) - armRetArgErrIf(MaxNumCoef > 16, OMX_Sts_BadArgErr) - - /* Initialize RLE Info structure */ - pDstVLCInfo->uTrailing_Ones = 0; - pDstVLCInfo->uTrailing_One_Signs = 0; - pDstVLCInfo->uNumCoeffs = 0; - pDstVLCInfo->uTotalZeros = 0; - - for (i = 0; i < 16; i++) - { - pDstVLCInfo->iLevels [i] = 0; - pDstVLCInfo->uRuns [i] = 0; - } - - MinIndex = (bAC == 0 && MaxNumCoef == 15) ? 1 : 0; - for (i = MinIndex; i < (MaxNumCoef + MinIndex); i++) - { - /* Scan */ - Buf [i - MinIndex] = pSrcCoeff [pScanMatrix [i]]; - } - - /* skip zeros at the end */ - i = MaxNumCoef - 1; - while (!Buf [i] && i >= 0) - { - i--; - } - - if (i < 0) - { - return OMX_Sts_NoErr; - } - - /* Fill RLE Info structure */ - pLevel = pDstVLCInfo->iLevels; - pRun = pDstVLCInfo->uRuns; - RunBefore = 0; - - /* Handle first non zero separate */ - pDstVLCInfo->uNumCoeffs++; - Value = Buf [i]; - if (Value == 1 || Value == -1) - { - pDstVLCInfo->uTrailing_Ones++; - - pDstVLCInfo->uTrailing_One_Signs |= - Value == -1 ? Mask : 0; - Mask >>= 1; - } - else - { - Value -= (Value > 0 ? 1 : -1); - *pLevel++ = Value; - Mask = 0; - } - - /* Remaining non zero */ - while (--i >= 0) - { - Value = Buf [i]; - if (Value) - { - pDstVLCInfo->uNumCoeffs++; - - /* Mask becomes zero after entering */ - if (Mask && - (Value == 1 || - Value == -1)) - { - pDstVLCInfo->uTrailing_Ones++; - - pDstVLCInfo->uTrailing_One_Signs |= - Value == -1 ? Mask : 0; - Mask >>= 1; - *pRun++ = RunBefore; - RunBefore = 0; - } - else - { - /* If 3 trailing ones are not completed */ - if (Mask) - { - Mask = 0; - Value -= (Value > 0 ? 1 : -1); - } - *pLevel++ = Value; - *pRun++ = RunBefore; - RunBefore = 0; - } - } - else - { - pDstVLCInfo->uTotalZeros++; - RunBefore++; - } - } - - /* Update last run */ - if (RunBefore) - { - *pRun++ = RunBefore; - } - - return OMX_Sts_NoErr; -} - -/***************************************************************************** - * END OF FILE - *****************************************************************************/ - |