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This commit is contained in:
Christopher Taylor 2017-05-27 21:39:02 -07:00
parent 111c0c3eb2
commit 6bf48a9c4a
2 changed files with 13 additions and 6 deletions
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11
LeopardFF8.cpp
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@ -846,17 +846,20 @@ void Encode(
// work <- data // work <- data
// FIXME: Unroll first loop to eliminate this // FIXME: Unroll first loop to eliminate this
for (unsigned i = 0; i < m; ++i) for (unsigned i = 0; i < original_count; ++i)
memcpy(work[i], data[i], buffer_bytes); memcpy(work[i], data[i], buffer_bytes);
for (unsigned i = original_count; i < m; ++i)
memset(work[i], 0, buffer_bytes);
// work <- IFFT(data, m, m) // work <- IFFT(data, m, m)
const unsigned first_end = (original_count < m) ? original_count : m;
for (unsigned width = 1; width < m; width <<= 1) for (unsigned width = 1; width < m; width <<= 1)
{ {
const unsigned range = width << 1; const unsigned range = width << 1;
const ffe_t* skewLUT = FFTSkew + m - 1; const ffe_t* skewLUT = FFTSkew + m - 1;
for (unsigned j = width; j < m; j += range) for (unsigned j = width; j < first_end; j += range)
{ {
VectorIFFTButterfly( VectorIFFTButterfly(
buffer_bytes, buffer_bytes,
@ -867,6 +870,9 @@ void Encode(
} }
} }
if (m >= original_count)
goto skip_body;
for (unsigned i = m; i + m <= original_count; i += m) for (unsigned i = m; i + m <= original_count; i += m)
{ {
// temp <- data + i // temp <- data + i
@ -949,6 +955,7 @@ void Encode(
} }
// work <- FFT(work, m, 0) // work <- FFT(work, m, 0)
skip_body:
for (unsigned width = (m >> 1); width > 0; width >>= 1) for (unsigned width = (m >> 1); width > 0; width >>= 1)
{ {

8
tests/benchmark.cpp
View File

@ -389,18 +389,18 @@ struct TestParameters
unsigned original_count = 1000; // under 65536 unsigned original_count = 1000; // under 65536
unsigned recovery_count = 100; // under 65536 - original_count unsigned recovery_count = 100; // under 65536 - original_count
#else #else
unsigned original_count = 100; // under 65536 unsigned original_count = 128; // under 65536
unsigned recovery_count = 10; // under 65536 - original_count unsigned recovery_count = 128; // under 65536 - original_count
#endif #endif
unsigned buffer_bytes = 64000; // multiple of 64 bytes unsigned buffer_bytes = 64000; // multiple of 64 bytes
unsigned loss_count = 10; // some fraction of original_count unsigned loss_count = 128; // some fraction of original_count
unsigned seed = 0; unsigned seed = 0;
bool multithreaded = true; bool multithreaded = true;
}; };
static void BasicTest(const TestParameters& params) static void BasicTest(const TestParameters& params)
{ {
static const unsigned kTrials = 4; static const unsigned kTrials = 10;
std::vector<uint8_t*> original_data(params.original_count); std::vector<uint8_t*> original_data(params.original_count);