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Use WELS_ROUND in the neon version of GeneralBilinearAccurateDownsampler

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Also use it in the commented out sse2 version - in case it gets
taken into use at some point. (It only works on 32 bit x86
at the moment.)

This makes sure the scaling factors are rounded similarly to the
in GeneralBilinearAccurateDownsampler_c, making sure the
accelerated versions of these function return identical results
to the C version.
This commit is contained in:
Martin Storsjö 2014-06-25 11:05:44 +03:00
parent e4220b7b55
commit f066df412c
1 changed files with 6 additions and 6 deletions
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12
codec/processing/src/downsample/downsamplefuncs.cpp
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@ -208,8 +208,8 @@ void GeneralBilinearAccurateDownsampler_c (uint8_t* pDst, const int32_t kiDstStr
// const int32_t kiScaleBitWidth = 16, kiScaleBitHeight = 15;
// const uint32_t kuiScaleWidth = (1 << kiScaleBitWidth), kuiScaleHeight = (1 << kiScaleBitHeight);
//
// uint32_t uiScalex = (uint32_t) ((float)kiSrcWidth / (float)kiDstWidth * kuiScaleWidth);
// uint32_t uiScaley = (uint32_t) ((float)kiSrcHeight / (float)kiDstHeight * kuiScaleHeight);
// uint32_t uiScalex = WELS_ROUND ((float)kiSrcWidth / (float)kiDstWidth * kuiScaleWidth);
// uint32_t uiScaley = WELS_ROUND ((float)kiSrcHeight / (float)kiDstHeight * kuiScaleHeight);
//
// GeneralBilinearFastDownsampler_sse2 (pDst, kiDstStride, kiDstWidth, kiDstHeight,
// pSrc, kiSrcStride, kiSrcWidth, kiSrcHeight, uiScalex, uiScaley);
@ -221,8 +221,8 @@ void GeneralBilinearAccurateDownsampler_c (uint8_t* pDst, const int32_t kiDstStr
// const int32_t kiScaleBit = 15;
// const uint32_t kuiScale = (1 << kiScaleBit);
//
// uint32_t uiScalex = (uint32_t) ((float)kiSrcWidth / (float)kiDstWidth * kuiScale);
// uint32_t uiScaley = (uint32_t) ((float)kiSrcHeight / (float)kiDstHeight * kuiScale);
// uint32_t uiScalex = WELS_ROUND ((float)kiSrcWidth / (float)kiDstWidth * kuiScale);
// uint32_t uiScaley = WELS_ROUND ((float)kiSrcHeight / (float)kiDstHeight * kuiScale);
//
// GeneralBilinearAccurateDownsampler_sse2 (pDst, kiDstStride, kiDstWidth, kiDstHeight,
// pSrc, kiSrcStride, kiSrcWidth, kiSrcHeight, uiScalex, uiScaley);
@ -235,8 +235,8 @@ void GeneralBilinearAccurateDownsamplerWrap_neon (uint8_t* pDst, const int32_t k
uint8_t* pSrc, const int32_t kiSrcStride, const int32_t kiSrcWidth, const int32_t kiSrcHeight) {
const int32_t kiScaleBit = 15;
const uint32_t kuiScale = (1 << kiScaleBit);
uint32_t uiScalex = (uint32_t) ((float)kiSrcWidth / (float)kiDstWidth * kuiScale);
uint32_t uiScaley = (uint32_t) ((float)kiSrcHeight / (float)kiDstHeight * kuiScale);
uint32_t uiScalex = WELS_ROUND ((float)kiSrcWidth / (float)kiDstWidth * kuiScale);
uint32_t uiScaley = WELS_ROUND ((float)kiSrcHeight / (float)kiDstHeight * kuiScale);
GeneralBilinearAccurateDownsampler_neon (pDst, kiDstStride, kiDstWidth, kiDstHeight, pSrc, kiSrcStride, uiScalex,
uiScaley);
}