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Diffstat (limited to 'media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_FillVLDBuffer.c')
-rw-r--r-- | media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_FillVLDBuffer.c | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_FillVLDBuffer.c b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_FillVLDBuffer.c new file mode 100644 index 0000000..1712c3a --- /dev/null +++ b/media/libstagefright/codecs/on2/h264dec/omxdl/reference/vc/m4p2/src/armVCM4P2_FillVLDBuffer.c @@ -0,0 +1,84 @@ +/** + * + * File Name: armVCM4P2_FillVLDBuffer.c + * OpenMAX DL: v1.0.2 + * Revision: 9641 + * Date: Thursday, February 7, 2008 + * + * (c) Copyright 2007-2008 ARM Limited. All Rights Reserved. + * + * + * + * Description: + * Contains module for VLC get bits from the stream + * + */ + +#include "omxtypes.h" +#include "armOMX.h" + +#include "armVCM4P2_ZigZag_Tables.h" + + +/** + * Function: armVCM4P2_FillVLDBuffer + * + * Description: + * Performs filling of the coefficient buffer according to the run, level + * and sign, also updates the index + * + * Parameters: + * [in] storeRun Stored Run value (count of zeros) + * [in] storeLevel Stored Level value (non-zero value) + * [in] sign Flag indicating the sign of level + * [in] last status of the last flag + * [in] pIndex pointer to coefficient index in 8x8 matrix + * [out] pIndex pointer to updated coefficient index in 8x8 + * matrix + * [in] pZigzagTable pointer to the zigzag tables + * [out] pDst pointer to the coefficient buffer of current + * block. Should be 32-bit aligned + * Return Value: + * Standard OMXResult result. See enumeration for possible result codes. + * + */ + +OMXResult armVCM4P2_FillVLDBuffer( + OMX_U32 storeRun, + OMX_S16 * pDst, + OMX_S16 storeLevel, + OMX_U8 sign, + OMX_U8 last, + OMX_U8 * pIndex, + const OMX_U8 * pZigzagTable +) +{ + /* Store the zero's as per the run length count */ + for (;storeRun > 0; storeRun--, (*pIndex)++) + { + pDst[pZigzagTable[*pIndex]] = 0; + } + /* Store the level depending on the sign*/ + if (sign == 1) + { + pDst[pZigzagTable[*pIndex]] = -storeLevel; + } + else + { + pDst[pZigzagTable[*pIndex]] = storeLevel; + } + (*pIndex)++; + + /* If last is 1, fill the remaining elments of the buffer with zeros */ + if (last == 1) + { + while (*pIndex < 64) + { + pDst[pZigzagTable[*pIndex]] = 0; + (*pIndex)++; + } + } + + return OMX_Sts_NoErr; +} + |