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39
40#include "qvideoframeconversionhelper_p.h"
41
42#ifdef QT_COMPILER_SUPPORTS_SSSE3
43
44QT_BEGIN_NAMESPACE
45
46void QT_FASTCALL qt_convert_BGRA32_to_ARGB32_ssse3(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 __m128i shuffleMask = _mm_set_epi8(12, 13, 14, 15, 8, 9, 10, 11, 4, 5, 6, 7, 0, 1, 2, 3);
53
54 for (int y = 0; y < height; ++y) {
55 const quint32 *bgra = reinterpret_cast<const quint32*>(src);
56
57 int x = 0;
58 ALIGN(16, argb, x, width) {
59 *argb = qConvertBGRA32ToARGB32(*bgra);
60 ++bgra;
61 ++argb;
62 }
63
64 for (; x < width - 7; x += 8) {
65 __m128i pixelData = _mm_loadu_si128(reinterpret_cast<const __m128i*>(bgra));
66 __m128i pixelData2 = _mm_loadu_si128(reinterpret_cast<const __m128i*>(bgra + 4));
67 bgra += 8;
68 pixelData = _mm_shuffle_epi8(pixelData, shuffleMask);
69 pixelData2 = _mm_shuffle_epi8(pixelData2, shuffleMask);
70 _mm_store_si128(reinterpret_cast<__m128i*>(argb), pixelData);
71 _mm_store_si128(reinterpret_cast<__m128i*>(argb + 4), pixelData2);
72 argb += 8;
73 }
74
75 // leftovers
76 for (; x < width; ++x) {
77 *argb = qConvertBGRA32ToARGB32(*bgra);
78 ++bgra;
79 ++argb;
80 }
81
82 src += stride;
83 }
84}
85
86QT_END_NAMESPACE
87
88#endif
89