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[Processing] Pick dyadic downsample function based on stride

Assume that data can be written into the padding area following each line. This enables the use of faster routines for more cases. Align downsample buffer stride to a multiple of 32. With this all strides used should be a multiple of 16, which means that use of narrower downsample routines can be dropped altogether.

Sindre Aamås committed 10 years ago

Commit 7cbb75e1 parent 770e48a2 files · +45 −57Browse files

Showing the changes to codec/processing/src (2 of 2 files). Show all

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2 files
  1. codec/processing/src/downsample/downsample.cpp +41 −54
  2. codec/processing/src/downsample/downsample.h +4 −3
codec/processing/src/downsample/downsample.cpp+41−54
@@ -32,6 +32,7 @@ · 31 unmodified lines
32 32
33#include "downsample.h"33#include "downsample.h"
34#include "cpu.h"34#include "cpu.h"
35#include <cassert>
35 36
36WELSVP_NAMESPACE_BEGIN37WELSVP_NAMESPACE_BEGIN
37#define MAX_SAMPLE_WIDTH 192038#define MAX_SAMPLE_WIDTH 1920
@@ -75,20 +76,18 @@ void CDownsampling::FreeSampleBuffer() { · 37 unmodified lines
75 WelsFree (m_pSampleBuffer[i][2]);76 WelsFree (m_pSampleBuffer[i][2]);
76 }77 }
77}78}
79
78void CDownsampling::InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int32_t iCpuFlag) {80void CDownsampling::InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int32_t iCpuFlag) {
79 sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsampler_c;81 sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsampler_c;
80 sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsampler_c;82 sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsampler_c;
81 sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsampler_c;
82 sDownsampleFunc.pfHalfAverage[3] = DyadicBilinearDownsampler_c;
83 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_c;83 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_c;
84 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_c;84 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_c;
85 sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsampler_c;85 sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsampler_c;
86 sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsampler_c;86 sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsampler_c;
87#if defined(X86_ASM)87#if defined(X86_ASM)
88 if (iCpuFlag & WELS_CPU_SSE) {88 if (iCpuFlag & WELS_CPU_SSE) {
89 sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_sse;89 sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsamplerWidthx32_sse;
90 sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsamplerWidthx16_sse;90 sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsamplerWidthx16_sse;
91 sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsamplerWidthx8_sse;
92 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_sse;91 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_sse;
93 }92 }
94 if (iCpuFlag & WELS_CPU_SSE2) {93 if (iCpuFlag & WELS_CPU_SSE2) {
@@ -96,15 +95,15 @@ void CDownsampling::InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int · 1 unmodified line
96 sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsamplerWrap_sse2;95 sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsamplerWrap_sse2;
97 }96 }
98 if (iCpuFlag & WELS_CPU_SSSE3) {97 if (iCpuFlag & WELS_CPU_SSSE3) {
99 sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_ssse3;98 sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsamplerWidthx32_ssse3;
100 sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsamplerWidthx16_ssse3;99 sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsamplerWidthx16_ssse3;
101 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_ssse3;100 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_ssse3;
102 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_ssse3;101 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_ssse3;
103 sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsamplerWrap_ssse3;102 sDownsampleFunc.pfGeneralRatioLuma = GeneralBilinearFastDownsamplerWrap_ssse3;
104 }103 }
105 if (iCpuFlag & WELS_CPU_SSE41) {104 if (iCpuFlag & WELS_CPU_SSE41) {
106 sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_sse4;105 sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsamplerWidthx32_sse4;
107 sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsamplerWidthx16_sse4;106 sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsamplerWidthx16_sse4;
108 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_sse4;107 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_sse4;
109 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_sse4;108 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_sse4;
110 sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_sse41;109 sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_sse41;
@@ -117,10 +116,8 @@ void CDownsampling::InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int · 6 unmodified lines
117 116
118#if defined(HAVE_NEON)117#if defined(HAVE_NEON)
119 if (iCpuFlag & WELS_CPU_NEON) {118 if (iCpuFlag & WELS_CPU_NEON) {
120 sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_neon;119 sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsamplerWidthx32_neon;
121 sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsampler_neon;120 sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsampler_neon;
122 sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsampler_neon;
123 sDownsampleFunc.pfHalfAverage[3] = DyadicBilinearDownsampler_neon;
124 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_neon;121 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_neon;
125 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_neon;122 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_neon;
126 sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_neon;123 sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_neon;
@@ -130,10 +127,8 @@ void CDownsampling::InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int · 3 unmodified lines
130 127
131#if defined(HAVE_NEON_AARCH64)128#if defined(HAVE_NEON_AARCH64)
132 if (iCpuFlag & WELS_CPU_NEON) {129 if (iCpuFlag & WELS_CPU_NEON) {
133 sDownsampleFunc.pfHalfAverage[0] = DyadicBilinearDownsamplerWidthx32_AArch64_neon;130 sDownsampleFunc.pfHalfAverageWidthx32 = DyadicBilinearDownsamplerWidthx32_AArch64_neon;
134 sDownsampleFunc.pfHalfAverage[1] = DyadicBilinearDownsampler_AArch64_neon;131 sDownsampleFunc.pfHalfAverageWidthx16 = DyadicBilinearDownsampler_AArch64_neon;
135 sDownsampleFunc.pfHalfAverage[2] = DyadicBilinearDownsampler_AArch64_neon;
136 sDownsampleFunc.pfHalfAverage[3] = DyadicBilinearDownsampler_AArch64_neon;
137 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_AArch64_neon;132 sDownsampleFunc.pfOneThirdDownsampler = DyadicBilinearOneThirdDownsampler_AArch64_neon;
138 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_AArch64_neon;133 sDownsampleFunc.pfQuarterDownsampler = DyadicBilinearQuarterDownsampler_AArch64_neon;
139 sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_AArch64_neon;134 sDownsampleFunc.pfGeneralRatioChroma = GeneralBilinearAccurateDownsamplerWrap_AArch64_neon;
@@ -159,14 +154,11 @@ EResult CDownsampling::Process (int32_t iType, SPixMap* pSrcPixMap, SPixMap* pDs · 19 unmodified lines
159 if (iSrcWidthY > MAX_SAMPLE_WIDTH || iSrcHeightY > MAX_SAMPLE_HEIGHT || m_bNoSampleBuffer) {154 if (iSrcWidthY > MAX_SAMPLE_WIDTH || iSrcHeightY > MAX_SAMPLE_HEIGHT || m_bNoSampleBuffer) {
160 if ((iSrcWidthY >> 1) == iDstWidthY && (iSrcHeightY >> 1) == iDstHeightY) {155 if ((iSrcWidthY >> 1) == iDstWidthY && (iSrcHeightY >> 1) == iDstHeightY) {
161 // use half average functions156 // use half average functions
162 uint8_t iAlignIndex = GetAlignedIndex (iSrcWidthY);157 DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0],
163 m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0],
164 (uint8_t*)pSrcPixMap->pPixel[0], pSrcPixMap->iStride[0], iSrcWidthY, iSrcHeightY);158 (uint8_t*)pSrcPixMap->pPixel[0], pSrcPixMap->iStride[0], iSrcWidthY, iSrcHeightY);
165 159 DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1],
166 iAlignIndex = GetAlignedIndex (iSrcWidthUV);
167 m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1],
168 (uint8_t*)pSrcPixMap->pPixel[1], pSrcPixMap->iStride[1], iSrcWidthUV, iSrcHeightUV);160 (uint8_t*)pSrcPixMap->pPixel[1], pSrcPixMap->iStride[1], iSrcWidthUV, iSrcHeightUV);
169 m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2],161 DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2],
170 (uint8_t*)pSrcPixMap->pPixel[2], pSrcPixMap->iStride[2], iSrcWidthUV, iSrcHeightUV);162 (uint8_t*)pSrcPixMap->pPixel[2], pSrcPixMap->iStride[2], iSrcWidthUV, iSrcHeightUV);
171 } else if ((iSrcWidthY >> 2) == iDstWidthY && (iSrcHeightY >> 2) == iDstHeightY) {163 } else if ((iSrcWidthY >> 2) == iDstWidthY && (iSrcHeightY >> 2) == iDstHeightY) {
172 164
@@ -223,29 +215,23 @@ EResult CDownsampling::Process (int32_t iType, SPixMap* pSrcPixMap, SPixMap* pDs · 50 unmodified lines
223 do {215 do {
224 if ((iHalfSrcWidth == iDstWidthY) && (iHalfSrcHeight == iDstHeightY)) { //end216 if ((iHalfSrcWidth == iDstWidthY) && (iHalfSrcHeight == iDstHeightY)) { //end
225 // use half average functions217 // use half average functions
226 uint8_t iAlignIndex = GetAlignedIndex (iSrcWidthY);218 DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0],
227 m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[0], pDstPixMap->iStride[0],
228 (uint8_t*)pSrcY, iSrcStrideY, iSrcWidthY, iSrcHeightY);219 (uint8_t*)pSrcY, iSrcStrideY, iSrcWidthY, iSrcHeightY);
229 220 DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1],
230 iAlignIndex = GetAlignedIndex (iSrcWidthUV);
231 m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[1], pDstPixMap->iStride[1],
232 (uint8_t*)pSrcU, iSrcStrideU, iSrcWidthUV, iSrcHeightUV);221 (uint8_t*)pSrcU, iSrcStrideU, iSrcWidthUV, iSrcHeightUV);
233 m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2],222 DownsampleHalfAverage ((uint8_t*)pDstPixMap->pPixel[2], pDstPixMap->iStride[2],
234 (uint8_t*)pSrcV, iSrcStrideV, iSrcWidthUV, iSrcHeightUV);223 (uint8_t*)pSrcV, iSrcStrideV, iSrcWidthUV, iSrcHeightUV);
235 break;224 break;
236 } else if (((iHalfSrcWidth >> 1) >= iDstWidthY) && ((iHalfSrcHeight >> 1) >= iDstHeightY)) {225 } else if (((iHalfSrcWidth >> 1) >= iDstWidthY) && ((iHalfSrcHeight >> 1) >= iDstHeightY)) {
237 // use half average functions226 // use half average functions
238 iDstStrideY = iHalfSrcWidth;227 iDstStrideY = WELS_ALIGN (iHalfSrcWidth, 32);
239 iDstStrideU = iHalfSrcWidth >> 1;228 iDstStrideU = WELS_ALIGN (iHalfSrcWidth >> 1, 32);
240 iDstStrideV = iHalfSrcWidth >> 1;229 iDstStrideV = WELS_ALIGN (iHalfSrcWidth >> 1, 32);
241 uint8_t iAlignIndex = GetAlignedIndex (iSrcWidthY);230 DownsampleHalfAverage ((uint8_t*)pDstY, iDstStrideY,
242 m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstY, iDstStrideY,
243 (uint8_t*)pSrcY, iSrcStrideY, iSrcWidthY, iSrcHeightY);231 (uint8_t*)pSrcY, iSrcStrideY, iSrcWidthY, iSrcHeightY);
244 232 DownsampleHalfAverage ((uint8_t*)pDstU, iDstStrideU,
245 iAlignIndex = GetAlignedIndex (iSrcWidthUV);
246 m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstU, iDstStrideU,
247 (uint8_t*)pSrcU, iSrcStrideU, iSrcWidthUV, iSrcHeightUV);233 (uint8_t*)pSrcU, iSrcStrideU, iSrcWidthUV, iSrcHeightUV);
248 m_pfDownsample.pfHalfAverage[iAlignIndex] ((uint8_t*)pDstV, iDstStrideV,234 DownsampleHalfAverage ((uint8_t*)pDstV, iDstStrideV,
249 (uint8_t*)pSrcV, iSrcStrideV, iSrcWidthUV, iSrcHeightUV);235 (uint8_t*)pSrcV, iSrcStrideV, iSrcWidthUV, iSrcHeightUV);
250 236
251 pSrcY = (uint8_t*)pDstY;237 pSrcY = (uint8_t*)pDstY;
@@ -258,9 +244,9 @@ EResult CDownsampling::Process (int32_t iType, SPixMap* pSrcPixMap, SPixMap* pDs · 6 unmodified lines
258 iSrcHeightY = iHalfSrcHeight;244 iSrcHeightY = iHalfSrcHeight;
259 iSrcHeightUV = iHalfSrcHeight >> 1;245 iSrcHeightUV = iHalfSrcHeight >> 1;
260 246
261 iSrcStrideY = iSrcWidthY;247 iSrcStrideY = iDstStrideY;
262 iSrcStrideU = iSrcWidthUV;248 iSrcStrideU = iDstStrideU;
263 iSrcStrideV = iSrcWidthUV;249 iSrcStrideV = iDstStrideV;
264 250
265 iHalfSrcWidth >>= 1;251 iHalfSrcWidth >>= 1;
266 iHalfSrcHeight >>= 1;252 iHalfSrcHeight >>= 1;
@@ -286,17 +272,18 @@ EResult CDownsampling::Process (int32_t iType, SPixMap* pSrcPixMap, SPixMap* pDs · 19 unmodified lines
286 return RET_SUCCESS;272 return RET_SUCCESS;
287}273}
288 274
289int32_t CDownsampling::GetAlignedIndex (const int32_t kiSrcWidth) {275void CDownsampling::DownsampleHalfAverage (uint8_t* pDst, int32_t iDstStride,
290 int32_t iAlignIndex;276 uint8_t* pSrc, int32_t iSrcStride, int32_t iSrcWidth, int32_t iSrcHeight) {
291 if ((kiSrcWidth & 0x1f) == 0) // x32277 if ((iSrcStride & 31) == 0) {
292 iAlignIndex = 0;278 assert ((iDstStride & 15) == 0);
293 else if ((kiSrcWidth & 0x0f) == 0) // x16279 m_pfDownsample.pfHalfAverageWidthx32 (pDst, iDstStride,
294 iAlignIndex = 1;280 pSrc, iSrcStride, WELS_ALIGN (iSrcWidth, 32), iSrcHeight);
295 else if ((kiSrcWidth & 0x07) == 0) // x8281 } else {
296 iAlignIndex = 2;282 assert ((iSrcStride & 15) == 0);
297 else283 assert ((iDstStride & 7) == 0);
298 iAlignIndex = 3;284 m_pfDownsample.pfHalfAverageWidthx16 (pDst, iDstStride,
299 return iAlignIndex;285 pSrc, iSrcStride, WELS_ALIGN (iSrcWidth, 16), iSrcHeight);
286 }
300}287}
301 288
302 289
codec/processing/src/downsample/downsample.h+4−3
@@ -73,8 +73,8 @@ SpecificDownsampleFunc DyadicBilinearOneThirdDownsampler_c; · 72 unmodified lines
73SpecificDownsampleFunc DyadicBilinearQuarterDownsampler_c;73SpecificDownsampleFunc DyadicBilinearQuarterDownsampler_c;
74 74
75typedef struct {75typedef struct {
76 // align_index: 0 = x32; 1 = x16; 2 = x8; 3 = common case left;76 PHalveDownsampleFunc pfHalfAverageWidthx32;
77 PHalveDownsampleFunc pfHalfAverage[4];77 PHalveDownsampleFunc pfHalfAverageWidthx16;
78 PSpecificDownsampleFunc pfOneThirdDownsampler;78 PSpecificDownsampleFunc pfOneThirdDownsampler;
79 PSpecificDownsampleFunc pfQuarterDownsampler;79 PSpecificDownsampleFunc pfQuarterDownsampler;
80 PGeneralDownsampleFunc pfGeneralRatioLuma;80 PGeneralDownsampleFunc pfGeneralRatioLuma;
@@ -185,7 +185,8 @@ class CDownsampling : public IStrategy { · 104 unmodified lines
185 private:185 private:
186 void InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int32_t iCpuFlag);186 void InitDownsampleFuncs (SDownsampleFuncs& sDownsampleFunc, int32_t iCpuFlag);
187 187
188 int32_t GetAlignedIndex (const int32_t kiSrcWidth);188 void DownsampleHalfAverage (uint8_t* pDst, int32_t iDstStride,
189 uint8_t* pSrc, int32_t iSrcStride, int32_t iSrcWidth, int32_t iSrcHeight);
189 bool AllocateSampleBuffer();190 bool AllocateSampleBuffer();
190 void FreeSampleBuffer();191 void FreeSampleBuffer();
191 private:192 private:

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