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39 | |
40 | #include "qvideoframeconversionhelper_p.h" |
41 | |
42 | #ifdef QT_COMPILER_SUPPORTS_AVX2 |
43 | |
44 | QT_BEGIN_NAMESPACE |
45 | |
46 | void QT_FASTCALL qt_convert_BGRA32_to_ARGB32_avx2(const QVideoFrame &frame, uchar *output) |
47 | { |
48 | FETCH_INFO_PACKED(frame) |
49 | MERGE_LOOPS(width, height, stride, 4) |
50 | quint32 *argb = reinterpret_cast<quint32*>(output); |
51 | |
52 | const __m256i shuffleMask = _mm256_set_epi8(b31: 12, b30: 13, b29: 14, b28: 15, b27: 8, b26: 9, b25: 10, b24: 11, b23: 4, b22: 5, b21: 6, b20: 7, b19: 0, b18: 1, b17: 2, b16: 3, |
53 | b15: 12, b14: 13, b13: 14, b12: 15, b11: 8, b10: 9, b09: 10, b08: 11, b07: 4, b06: 5, b05: 6, b04: 7, b03: 0, b02: 1, b01: 2, b00: 3); |
54 | |
55 | for (int y = 0; y < height; ++y) { |
56 | const quint32 *bgra = reinterpret_cast<const quint32*>(src); |
57 | |
58 | int x = 0; |
59 | ALIGN(32, argb, x, width) { |
60 | *argb = qConvertBGRA32ToARGB32(bgra: *bgra); |
61 | ++bgra; |
62 | ++argb; |
63 | } |
64 | |
65 | for (; x < width - 15; x += 16) { |
66 | __m256i pixelData = _mm256_loadu_si256(p: reinterpret_cast<const __m256i*>(bgra)); |
67 | __m256i pixelData2 = _mm256_loadu_si256(p: reinterpret_cast<const __m256i*>(bgra + 8)); |
68 | bgra += 16; |
69 | pixelData = _mm256_shuffle_epi8(a: pixelData, b: shuffleMask); |
70 | pixelData2 = _mm256_shuffle_epi8(a: pixelData2, b: shuffleMask); |
71 | _mm256_store_si256(p: reinterpret_cast<__m256i*>(argb), a: pixelData); |
72 | _mm256_store_si256(p: reinterpret_cast<__m256i*>(argb + 8), a: pixelData2); |
73 | argb += 16; |
74 | } |
75 | |
76 | // leftovers |
77 | for (; x < width; ++x) { |
78 | *argb = qConvertBGRA32ToARGB32(bgra: *bgra); |
79 | ++bgra; |
80 | ++argb; |
81 | } |
82 | |
83 | src += stride; |
84 | } |
85 | } |
86 | |
87 | QT_END_NAMESPACE |
88 | |
89 | #endif |
90 | |