59 // pSrc[0,1,2] == B,G,R; pSrc[3] == Alpha
60 while (i < width && !pSrc[3]) {
61 pSrc += 4;
62 ++i;
63 }
64 if (i >= width)
65 break;
66 i0 = i;
67 while (i < width && pSrc[3]) {
68 pSrc += 4;
69 ++i;
70 }
71 RECT_SET(*pThis, i0, j, i - i0, 1);
72 ++pThis;
73 } while (i < width);
74
75 /* check if the previous scanline is exactly the same, merge if so
76 (this is the only optimization we can use for YXBanded rectangles,
77 and win32 supports YXBanded only */
78
79 length = pThis - pLine;
80 if (pPrevLine && pLine - pPrevLine == length) {
81 for (i = 0; i < length && RECT_EQ_X(pPrevLine[i], pLine[i]); ++i) {
82 }
83 if (i == pLine - pPrevLine) {
84 // do merge
85 for (i = 0; i < length; i++) {
86 RECT_INC_HEIGHT(pPrevLine[i]);
87 }
88 pThis = pLine;
89 continue;
90 }
91 }
92 /* or else use the generated scanline */
93
94 pPrevLine = pLine;
95 }
96
97 return pThis - pFirst;
98 }
99
100 #if defined(__cplusplus)
101 }
102 #endif
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59 // pSrc[0,1,2] == B,G,R; pSrc[3] == Alpha
60 while (i < width && !pSrc[3]) {
61 pSrc += 4;
62 ++i;
63 }
64 if (i >= width)
65 break;
66 i0 = i;
67 while (i < width && pSrc[3]) {
68 pSrc += 4;
69 ++i;
70 }
71 RECT_SET(*pThis, i0, j, i - i0, 1);
72 ++pThis;
73 } while (i < width);
74
75 /* check if the previous scanline is exactly the same, merge if so
76 (this is the only optimization we can use for YXBanded rectangles,
77 and win32 supports YXBanded only */
78
79 length = (int)(pThis - pLine);
80 if (pPrevLine && pLine - pPrevLine == length) {
81 for (i = 0; i < length && RECT_EQ_X(pPrevLine[i], pLine[i]); ++i) {
82 }
83 if (i == pLine - pPrevLine) {
84 // do merge
85 for (i = 0; i < length; i++) {
86 RECT_INC_HEIGHT(pPrevLine[i]);
87 }
88 pThis = pLine;
89 continue;
90 }
91 }
92 /* or else use the generated scanline */
93
94 pPrevLine = pLine;
95 }
96
97 return (int)(pThis - pFirst);
98 }
99
100 #if defined(__cplusplus)
101 }
102 #endif
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