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Commit f6451c7a authored by matze's avatar matze
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Varaible names renamed. Macro definitions fixed. findEndContourPoint function… 

Varaible names renamed. Macro definitions fixed. findEndContourPoint function fixed. findContoursInInterval adjusted.
parent 25cf33d5
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Showing with 46 additions and 39 deletions
modules/imgproc/src/contours.cpp
View file @ f6451c7a
......@@ -52,11 +52,17 @@ static const CvPoint icvCodeDeltas[8] =
inline unsigned int trailingZeros(unsigned int value) {
#if defined(_MSC_VER)
#if (_MSC_VER < 1500)
return _BitScanForward(value);
#else
return _tzcnt_u32(value);
#elif defined(_GCC)
#endif
#elif defined(__GNUC__) || defined(__GNUG__)
return __builtin_ctz(value);
//#elif defined(__INTEL_COMPILER)
//return _bit_scan_reverse(value);
//#elif defined(__ICC) || defined(__INTEL_COMPILER)
// return _bit_scan_forward(value);
//#elif defined(__clang__)
// return llvm.cttz.i32(value, true);
#else
static const int MultiplyDeBruijnBitPosition[32] = {
0, 1, 28, 2, 29, 14, 24, 3, 30, 22, 20, 15, 25, 17, 4, 8,
......@@ -1052,8 +1058,8 @@ cvFindNextContour( CvContourScanner scanner )
int v_size = width - 32;
for (; x <= v_size; x += 32) {
__m128i v_p1 = _mm_loadu_si128((__m128i*)(img + x));
__m128i v_p2 = _mm_loadu_si128((__m128i*)(img + x + 16));
__m128i v_p1 = _mm_loadu_si128((const __m128i*)(img + x));
__m128i v_p2 = _mm_loadu_si128((const __m128i*)(img + x + 16));
__m128i v_cmp1 = _mm_cmpeq_epi8(v_p1, v_prev);
__m128i v_cmp2 = _mm_cmpeq_epi8(v_p2, v_prev);
......@@ -1350,18 +1356,18 @@ inline int findStartContourPoint(uchar *src_data, CvSize img_size, int j) {
#endif
#if CV_SSE2
if (haveSSE2) {
__m128i sseZero = _mm_setzero_si128();
int sizeSse = img_size.width - 32;
__m128i v_zero = _mm_setzero_si128();
int v_size = img_size.width - 32;
for (; j <= sizeSse; j += 32) {
__m128i sseP1 = _mm_loadu_si128((__m128i*)(src_data + j));
__m128i sseP2 = _mm_loadu_si128((__m128i*)(src_data + j + 16));
for (; j <= v_size; j += 32) {
__m128i v_p1 = _mm_loadu_si128((const __m128i*)(src_data + j));
__m128i v_p2 = _mm_loadu_si128((const __m128i*)(src_data + j + 16));
__m128i sseCmp1 = _mm_cmpeq_epi8(sseP1, sseZero);
__m128i sseCmp2 = _mm_cmpeq_epi8(sseP2, sseZero);
__m128i v_cmp1 = _mm_cmpeq_epi8(v_p1, v_zero);
__m128i v_cmp2 = _mm_cmpeq_epi8(v_p2, v_zero);
unsigned int mask1 = _mm_movemask_epi8(sseCmp1);
unsigned int mask2 = _mm_movemask_epi8(sseCmp2);
unsigned int mask1 = _mm_movemask_epi8(v_cmp1);
unsigned int mask2 = _mm_movemask_epi8(v_cmp2);
mask1 ^= 0x0000ffff;
mask2 ^= 0x0000ffff;
......@@ -1378,9 +1384,9 @@ inline int findStartContourPoint(uchar *src_data, CvSize img_size, int j) {
}
if (j <= img_size.width - 16) {
__m128i sseP = _mm_loadu_si128((__m128i*)(src_data + j));
__m128i v_p = _mm_loadu_si128((const __m128i*)(src_data + j));
unsigned int mask = _mm_movemask_epi8(_mm_cmpeq_epi8(sseP, sseZero)) ^ 0x0000ffff;
unsigned int mask = _mm_movemask_epi8(_mm_cmpeq_epi8(v_p, v_zero)) ^ 0x0000ffff;
if (mask) {
j += trailingZeros(mask);
......@@ -1401,40 +1407,40 @@ inline int findEndContourPoint(uchar *src_data, CvSize img_size, int j, bool hav
inline int findEndContourPoint(uchar *src_data, CvSize img_size, int j) {
#endif
#if CV_SSE2
if (!src_data[j]) {
return j;
if (j < img_size.width && !src_data[j]) {
return j - 1;
} else if (haveSSE2) {
__m128i sseZero = _mm_setzero_si128();
int sizeSse = img_size.width - 32;
__m128i v_zero = _mm_setzero_si128();
int v_size = img_size.width - 32;
for (; j <= sizeSse; j += 32) {
__m128i sseP1 = _mm_loadu_si128((__m128i*)(src_data + j));
__m128i sseP2 = _mm_loadu_si128((__m128i*)(src_data + j + 16));
for (; j <= v_size; j += 32) {
__m128i v_p1 = _mm_loadu_si128((const __m128i*)(src_data + j));
__m128i v_p2 = _mm_loadu_si128((const __m128i*)(src_data + j + 16));
__m128i sseCmp1 = _mm_cmpeq_epi8(sseP1, sseZero);
__m128i sseCmp2 = _mm_cmpeq_epi8(sseP2, sseZero);
__m128i v_cmp1 = _mm_cmpeq_epi8(v_p1, v_zero);
__m128i v_cmp2 = _mm_cmpeq_epi8(v_p2, v_zero);
unsigned int mask1 = _mm_movemask_epi8(sseCmp1);
unsigned int mask2 = _mm_movemask_epi8(sseCmp2);
unsigned int mask1 = _mm_movemask_epi8(v_cmp1);
unsigned int mask2 = _mm_movemask_epi8(v_cmp2);
if (mask1) {
j += trailingZeros(mask1);
j += (trailingZeros(mask1) - 1);
return j;
}
if (mask2) {
j += trailingZeros(mask2 << 16);
j += trailingZeros(mask2 << 15);
return j;
}
}
if (j <= img_size.width - 16) {
__m128i sseP = _mm_loadu_si128((__m128i*)(src_data + j));
__m128i v_p = _mm_loadu_si128((const __m128i*)(src_data + j));
unsigned int mask = _mm_movemask_epi8(_mm_cmpeq_epi8(sseP, sseZero));
unsigned int mask = _mm_movemask_epi8(_mm_cmpeq_epi8(v_p, v_zero));
if (mask) {
j += trailingZeros(mask);
j += (trailingZeros(mask) - 1);
return j;
}
j += 16;
......@@ -1443,7 +1449,8 @@ inline int findEndContourPoint(uchar *src_data, CvSize img_size, int j) {
#endif
for (; j < img_size.width && src_data[j]; ++j)
;
return j;
return j - 1;
}
static int
......@@ -1545,11 +1552,11 @@ icvFindContoursInInterval( const CvArr* src,
tmp_prev->next = (CvLinkedRunPoint*)CV_GET_WRITTEN_ELEM( writer );
tmp_prev = tmp_prev->next;
#if CV_SSE2
j = findEndContourPoint(src_data, img_size, j, haveSSE2);
j = findEndContourPoint(src_data, img_size, j+1, haveSSE2);
#else
j = findEndContourPoint(src_data, img_size, j);
j = findEndContourPoint(src_data, img_size, j+1);
#endif
tmp.pt.x = j-1;
tmp.pt.x = j;
CV_WRITE_SEQ_ELEM( tmp, writer );
tmp_prev->next = (CvLinkedRunPoint*)CV_GET_WRITTEN_ELEM( writer );
tmp_prev->link = tmp_prev->next;
......@@ -1583,11 +1590,11 @@ icvFindContoursInInterval( const CvArr* src,
tmp_prev->next = (CvLinkedRunPoint*)CV_GET_WRITTEN_ELEM( writer );
tmp_prev = tmp_prev->next;
#if CV_SSE2
j = findEndContourPoint(src_data, img_size, j, haveSSE2);
j = findEndContourPoint(src_data, img_size, j+1, haveSSE2);
#else
j = findEndContourPoint(src_data, img_size, j);
j = findEndContourPoint(src_data, img_size, j+1);
#endif
tmp.pt.x = j-1;
tmp.pt.x = j;
CV_WRITE_SEQ_ELEM( tmp, writer );
tmp_prev = tmp_prev->next = (CvLinkedRunPoint*)CV_GET_WRITTEN_ELEM( writer );
}//j
......
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