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MNN/source/backend/cpu/CPUTensorConvert.cpp

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//
// CPUTensorConvert.cpp
// MNN
//
// Created by MNN on 2018/08/04.
// Copyright © 2018, Alibaba Group Holding Limited
//
#include "backend/cpu/CPUTensorConvert.hpp"
#include "backend/cpu/CPUBackend.hpp"
#include "core/Macro.h"
#include "core/TensorUtils.hpp"
#include "backend/cpu/compute/CommonOptFunction.h"
#include "core/Concurrency.h"
namespace MNN {
template<typename T>
void NCHW2NHWC(const T* source, T* dest, int b, int c, int area) {
int sourceBatchsize = c * area;
int destBatchSize = sourceBatchsize;
for (int bi = 0; bi < b; ++bi) {
auto srcBatch = source + bi * sourceBatchsize;
auto dstBatch = dest + bi * destBatchSize;
for (int i = 0; i < area; ++i) {
auto srcArea = srcBatch + i;
auto dstArea = dstBatch + i * c;
for (int ci = 0; ci < c; ++ci) {
dstArea[ci] = srcArea[ci * area];
}
}
}
}
template<typename T>
void NHWC2NCHW(const T* source, T* dest, int b, int c, int area) {
int sourceBatchsize = c * area;
int destBatchSize = sourceBatchsize;
for (int bi = 0; bi < b; ++bi) {
auto srcBatch = source + bi * sourceBatchsize;
auto dstBatch = dest + bi * destBatchSize;
for (int i = 0; i < area; ++i) {
auto srcArea = srcBatch + i * c;
auto dstArea = dstBatch + i;
for (int ci = 0; ci < c; ++ci) {
dstArea[ci * area] = srcArea[ci];
}
}
}
}
typedef void(*PackProc)(void* dst, const void* src, size_t area, size_t depth, int* areaOffset);
ErrorCode CPUTensorConverter::convert(const void* inputRaw, void* outputRaw, MNN_DATA_FORMAT source, MNN_DATA_FORMAT dest, int batch, int area, int channel, int bitLength, const CoreFunctions* core, int tId, int numberThread) {
// the case when source and dest data layout are the same
// This case occurs in BackendTest of BF16 data.
if(source == dest) {
if (tId == 0) {
::memcpy(outputRaw, inputRaw, batch * area * channel * bitLength);
}
return NO_ERROR;
}
if (MNN_DATA_FORMAT_NHWC == source && MNN_DATA_FORMAT_NCHW == dest) {
if (tId == 0) {
switch (bitLength) {
case 1:
NHWC2NCHW((int8_t*)inputRaw, (int8_t*)outputRaw, batch, channel, area);
break;
case 2:
NHWC2NCHW((int16_t*)inputRaw, (int16_t*)outputRaw, batch, channel, area);
break;
case 4:
NHWC2NCHW((float*)inputRaw, (float*)outputRaw, batch, channel, area);
break;
default:
break;
}
}
return NO_ERROR;
}
if (MNN_DATA_FORMAT_NCHW == source && MNN_DATA_FORMAT_NHWC == dest) {
if (tId == 0) {
switch (bitLength) {
case 1:
NCHW2NHWC((int8_t*)inputRaw, (int8_t*)outputRaw, batch, channel, area);
break;
case 2:
NCHW2NHWC((int16_t*)inputRaw, (int16_t*)outputRaw, batch, channel, area);
break;
case 4:
NCHW2NHWC((float*)inputRaw, (float*)outputRaw, batch, channel, area);
break;
default:
break;
}
}
return NO_ERROR;
}
// Need Pack
PackProc proc = nullptr;
int inside = area;
int outside = batch;
if (MNN_DATA_FORMAT_NHWC == source || MNN_DATA_FORMAT_NHWC == dest) {
inside = 1;
outside = batch * area;
}
//MNN_PRINT("bytes = %d, from %d -> %d, %d - %d - %d\n", bitLength, source, dest, inside, outside, channel);
if (MNN_DATA_FORMAT_NC4HW4 == source) {
if (1 == inside) {
int offset[2] = {
outside,
outside
};
int step = UP_DIV(outside, numberThread);
int start = tId * step;
int end = std::min(start + step, outside);
if (end <= start) {
return NO_ERROR;
}
auto inputStart = (int8_t*)inputRaw + (start * core->pack * bitLength);
auto outputStart = (int8_t*)outputRaw + (start * channel * bitLength);
if (core->bytes == bitLength) {
proc = decltype(proc)(core->MNNUnpackCUnitTranspose);
} else if (bitLength == 1) {
proc = decltype(proc)(core->MNNUnpackCUnitTransposeInt8);
} else if (bitLength == 2) {
proc = decltype(proc)(core->MNNUnpackCUnitTransposeInt16);
}
if (nullptr == proc) {
return NOT_SUPPORT;
}
proc((float*)outputStart, (const float*)inputStart, end - start, channel, offset);
} else {
if (core->bytes == bitLength) {
proc = decltype(proc)(core->MNNUnpackCUnit);
} else if (bitLength == 1) {
proc = decltype(proc)(core->MNNUnpackCUnitInt8);
} else if (bitLength == 2) {
proc = decltype(proc)(core->MNNUnpackCUnitInt16);
}
if (nullptr == proc) {
return NOT_SUPPORT;
}
if (batch != 1) {
// Divide in batch
int offset[2] = {
outside * inside,
area
};
int step = UP_DIV(batch, numberThread);
int start = tId * step;
int end = std::min(start + step, batch);
if (end <= start) {
return NO_ERROR;
}
for (int v=start; v<end; ++v) {
auto inputStart = (int8_t*)inputRaw + (v * core->pack * bitLength * area);
auto outputStart = (int8_t*)outputRaw + (v * channel * bitLength * area);
proc((float*)outputStart, (const float*)inputStart, area, channel, offset);
}
} else {
// Divide in area
int offset[2] = {
area,
area
};
int step = UP_DIV(area, numberThread);
int start = tId * step;
int end = std::min(start + step, area);
if (end <= start) {
return NO_ERROR;
}
auto inputStart = (int8_t*)inputRaw + (start * core->pack * bitLength);
auto outputStart = (int8_t*)outputRaw + (start * bitLength);
proc((float*)outputStart, (const float*)inputStart, end - start, channel, offset);
}
}
return NO_ERROR;
}
if (MNN_DATA_FORMAT_NC4HW4 == dest) {
if (1 == inside) {
int offset[2] = {
outside,
outside
};
int step = UP_DIV(outside, numberThread);
int start = tId * step;
int end = std::min(start + step, outside);
if (end <= start) {
return NO_ERROR;
}
if (core->bytes == bitLength) {
proc = decltype(proc)(core->MNNPackCUnitTranspose);
} else if (bitLength == 1) {
proc = decltype(proc)(core->MNNPackCUnitTransposeInt8);
} else if (bitLength == 2) {
proc = decltype(proc)(core->MNNPackCUnitTransposeInt16);
}
if (nullptr == proc) {
return NOT_SUPPORT;
}
auto outputStart = (int8_t*)outputRaw + (start * core->pack * bitLength);
auto inputStart = (int8_t*)inputRaw + (start * channel * bitLength);
proc(outputStart, inputStart, end - start, channel, offset);
} else {
if (core->bytes == bitLength) {
proc = decltype(proc)(core->MNNPackCUnit);
} else if (bitLength == 1) {
proc = decltype(proc)(core->MNNPackCUnitInt8);
} else if (bitLength == 2) {
proc = decltype(proc)(core->MNNPackCUnitInt16);
}
if (nullptr == proc) {
return NOT_SUPPORT;
}
if (batch != 1) {
// Divide in batch
int offset[2] = {
area,
outside * inside
};
int step = UP_DIV(batch, numberThread);
int start = tId * step;
int end = std::min(start + step, batch);
if (end <= start) {
return NO_ERROR;
}
for (int v=start; v<end; ++v) {
auto outputStart = (int8_t*)outputRaw + (v * core->pack * bitLength * area);
auto inputStart = (int8_t*)inputRaw + (v * channel * bitLength * area);
proc((float*)outputStart, (const float*)inputStart, area, channel, offset);
}
} else {
// Divide in area
int offset[2] = {
area,
area
};
int step = UP_DIV(area, numberThread);
int start = tId * step;
int end = std::min(start + step, area);
if (end <= start) {
return NO_ERROR;
}
auto outputStart = (int8_t*)outputRaw + (start * core->pack * bitLength);
auto inputStart = (int8_t*)inputRaw + (start * bitLength);
proc((float*)outputStart, (const float*)inputStart, end - start, channel, offset);
}
}
return NO_ERROR;
}
return NO_ERROR;
}
std::tuple<int, int, int> CPUTensorConverter::splitDimensions(const halide_buffer_t& ib, MNN_DATA_FORMAT source) {
int area = 1, batch = ib.dim[0].extent, channel;
if (source == MNN_DATA_FORMAT_NC4HW4 || source == MNN_DATA_FORMAT_NCHW) {
channel = ib.dim[1].extent;
for (int axis = 2; axis < ib.dimensions; ++axis) {
area *= ib.dim[axis].extent;
}
} else {
channel = ib.dim[ib.dimensions - 1].extent;
for (int axis = 1; axis < ib.dimensions - 1; ++axis) {
area *= ib.dim[axis].extent;
}
}
return std::make_tuple(batch, area, channel);
}
static int _getBytes(const CoreFunctions* core, const Tensor* output) {
auto bytes = output->getType().bytes();
auto quant = TensorUtils::getDescribe(output)->quantAttr.get();
if (output->getType().code == halide_type_float) {
bytes = core->bytes;
}
if (nullptr != quant && TensorUtils::getDescribe(output)->type == DataType_DT_INT8) {
bytes = 1;
}
return bytes;
}
ErrorCode CPUTensorConverter::convert(const Tensor* input, const Tensor* output, const CoreFunctions* core, int tId, int numberThread) {
auto ib = input->buffer();
auto ob = output->buffer();
auto source = TensorUtils::getDescribe(input)->dimensionFormat;
auto dest = TensorUtils::getDescribe(output)->dimensionFormat;
if (nullptr == core) {
core = MNNGetCoreFunctions();
}
size_t bitLength = _getBytes(core, input);
if (ib.dimensions <= 1 || source == dest) {
size_t dataSize = 1;
for (int i = 0; i < input->dimensions(); i++) {
int currentDimSize = input->length(i);
if (source == MNN_DATA_FORMAT_NC4HW4 && 1 == i) {
currentDimSize = UP_DIV(currentDimSize, core->pack) * core->pack;
}
dataSize *= currentDimSize;
}
// printf("convert # dataSize, bitLength = %d, %d\n", dataSize, bitLength);
// fflush(stdout);
::memcpy(ob.host, ib.host, dataSize * bitLength);
return NO_ERROR;
}
if (source == MNN_DATA_FORMAT_UNKNOWN || dest == MNN_DATA_FORMAT_UNKNOWN) {
MNN_ERROR("unknown data format!\nsrc: %s, dst: %s\n", EnumNameMNN_DATA_FORMAT(source), EnumNameMNN_DATA_FORMAT(dest));
return INVALID_VALUE;
}
auto tup = splitDimensions(ib, source);
int area = std::get<1>(tup), batch = std::get<0>(tup), channel = std::get<2>(tup);
auto code = convert(ib.host, ob.host, source, dest, batch, area, channel, bitLength, core, tId, numberThread);
if (NO_ERROR != code) {
MNN_ERROR("Error in CPUTensorConver\n");
return code;
}
return NO_ERROR;
}
} // namespace MNN
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