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| author | Matthias Vogelgesang <matthias.vogelgesang@kit.edu> | 2015-06-23 14:59:46 +0200 |
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| committer | Matthias Vogelgesang <matthias.vogelgesang@kit.edu> | 2015-06-23 14:59:46 +0200 |
| commit | 21d81a5b4399af04519e0e490d722dd9cabd48d8 (patch) | |
| tree | beb4c1e6fd1410fae522ba15d0d516df3313cbfc /src | |
| parent | f3c6e08fe4068534373f8026892f569bdcdfa4dd (diff) | |
| download | libufodecode-21d81a5b4399af04519e0e490d722dd9cabd48d8.tar.gz libufodecode-21d81a5b4399af04519e0e490d722dd9cabd48d8.tar.bz2 libufodecode-21d81a5b4399af04519e0e490d722dd9cabd48d8.tar.xz libufodecode-21d81a5b4399af04519e0e490d722dd9cabd48d8.zip | |
Simplify decoding a bit
Diffstat (limited to 'src')
| -rw-r--r-- | src/ufodecode.c | 32 |
1 files changed, 13 insertions, 19 deletions
diff --git a/src/ufodecode.c b/src/ufodecode.c index b12b8fd..d842c36 100644 --- a/src/ufodecode.c +++ b/src/ufodecode.c @@ -234,12 +234,10 @@ ufo_decode_frame_channels_v6 (UfoDecoder *decoder, uint16_t *pixel_buffer, uint3 size_t base = 0; size_t index = 0; const size_t space = 640; + #ifdef HAVE_SSE const __m64 mask_fff = _mm_set_pi32 (0xfff, 0xfff); __m64 mm_r; - uint32_t *result; - - result = (uint32_t *) &mm_r; #endif while (raw[base] != 0xAAAAAAA) { @@ -254,37 +252,33 @@ ufo_decode_frame_channels_v6 (UfoDecoder *decoder, uint16_t *pixel_buffer, uint3 const __m64 src2 = _mm_set_pi32 (raw[base + 1], raw[base + 4]); const __m64 src3 = _mm_set_pi32 (raw[base + 2], raw[base + 5]); +#define store(i) \ + pixel_buffer[index + i * space] = ((uint32_t *) &mm_r)[0]; \ + pixel_buffer[index + IPECAMERA_WIDTH_20MP + i * space] = ((uint32_t *) &mm_r)[1]; + mm_r = _mm_srli_pi32 (src1, 20); - pixel_buffer[index + 0 * space] = result[0]; - pixel_buffer[index + IPECAMERA_WIDTH_20MP + 0 * space] = result[1]; + store(0); mm_r = _mm_and_si64 (_mm_srli_pi32 (src1, 8), mask_fff); - pixel_buffer[index + 1 * space] = result[0]; - pixel_buffer[index + IPECAMERA_WIDTH_20MP + 1 * space] = result[1]; + store(1); mm_r = _mm_or_si64 (_mm_and_si64 (_mm_slli_pi32 (src1, 4), mask_fff), _mm_srli_pi32 (src2, 28)); - pixel_buffer[index + 2 * space] = result[0]; - pixel_buffer[index + IPECAMERA_WIDTH_20MP + 2 * space] = result[1]; + store(2); mm_r = _mm_and_si64 (_mm_srli_pi32 (src2, 16), mask_fff); - pixel_buffer[index + 3 * space] = result[0]; - pixel_buffer[index + IPECAMERA_WIDTH_20MP + 3 * space] = result[1]; + store(3); mm_r = _mm_and_si64 (_mm_srli_pi32 (src2, 4), mask_fff); - pixel_buffer[index + 4 * space] = result[0]; - pixel_buffer[index + IPECAMERA_WIDTH_20MP + 4 * space] = result[1]; + store(4); mm_r = _mm_or_si64 (_mm_and_si64 (_mm_slli_pi32 (src2, 8), mask_fff), _mm_srli_pi32 (src3, 24)); - pixel_buffer[index + 5 * space] = result[0]; - pixel_buffer[index + IPECAMERA_WIDTH_20MP + 5 * space] = result[1]; + store(5); mm_r = _mm_and_si64 (_mm_srli_pi32 (src3, 12), mask_fff); - pixel_buffer[index + 6 * space] = result[0]; - pixel_buffer[index + IPECAMERA_WIDTH_20MP + 6 * space] = result[1]; + store(6); mm_r = _mm_and_si64 (src3, mask_fff); - pixel_buffer[index + 7 * space] = result[0]; - pixel_buffer[index + IPECAMERA_WIDTH_20MP + 7 * space] = result[1]; + store(7); #else pixel_buffer[index + 0 * space] = (raw[base] >> 20); pixel_buffer[index + 1 * space] = (raw[base] >> 8) & 0xfff; |