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| |
| #include "qvideoframeconversionhelper_p.h" |
| |
| #ifdef QT_COMPILER_SUPPORTS_SSE2 |
| |
| QT_BEGIN_NAMESPACE |
| |
| void QT_FASTCALL qt_convert_BGRA32_to_ARGB32_sse2(const QVideoFrame &frame, uchar *output) |
| { |
| FETCH_INFO_PACKED(frame) |
| MERGE_LOOPS(width, height, stride, 4) |
| quint32 *argb = reinterpret_cast<quint32*>(output); |
| |
| const __m128i zero = _mm_setzero_si128(); |
| |
| for (int y = 0; y < height; ++y) { |
| const quint32 *bgra = reinterpret_cast<const quint32*>(src); |
| |
| int x = 0; |
| ALIGN(16, argb, x, width) { |
| *argb = qConvertBGRA32ToARGB32(*bgra); |
| ++bgra; |
| ++argb; |
| } |
| |
| for (; x < width - 3; x += 4) { |
| __m128i pixelData = _mm_loadu_si128(reinterpret_cast<const __m128i*>(bgra)); |
| bgra += 4; |
| __m128i gaComponents = _mm_unpacklo_epi8(pixelData, zero); |
| __m128i brComponents = _mm_unpackhi_epi8(pixelData, zero); |
| gaComponents = _mm_shufflelo_epi16(_mm_shufflehi_epi16(gaComponents, _MM_SHUFFLE(0, 1, 2, 3)), _MM_SHUFFLE(0, 1, 2, 3)); // swap GA |
| brComponents = _mm_shufflelo_epi16(_mm_shufflehi_epi16(brComponents, _MM_SHUFFLE(0, 1, 2, 3)), _MM_SHUFFLE(0, 1, 2, 3)); // swap BR |
| pixelData = _mm_packus_epi16(gaComponents, brComponents); |
| _mm_store_si128(reinterpret_cast<__m128i*>(argb), pixelData); |
| argb += 4; |
| } |
| |
| // leftovers |
| for (; x < width; ++x) { |
| *argb = qConvertBGRA32ToARGB32(*bgra); |
| ++bgra; |
| ++argb; |
| } |
| |
| src += stride; |
| } |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif |