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author | James Zern <jzern@google.com> | 2015-06-20 01:43:53 +0000 |
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committer | Gerrit Code Review <noreply-gerritcodereview@google.com> | 2015-06-20 01:43:54 +0000 |
commit | 7b480ee90c28e8775cba628bff1039229d15dded (patch) | |
tree | 40d36c626dd3bfa4747b9b7618a634e197b26f2a /vp9/encoder | |
parent | c539ec022fdffc6aba1cfea1fc7f3fceabe66362 (diff) | |
parent | 922af194bcba1b5e7ea0a5e84deda59f424e9d77 (diff) | |
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Merge "Add dynamic range comment to vp9_int_pro_row"
Diffstat (limited to 'vp9/encoder')
-rw-r--r-- | vp9/encoder/vp9_avg.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/vp9/encoder/vp9_avg.c b/vp9/encoder/vp9_avg.c index 99bc12e81..3ef3882d2 100644 --- a/vp9/encoder/vp9_avg.c +++ b/vp9/encoder/vp9_avg.c @@ -128,15 +128,18 @@ int16_t vp9_satd_c(const int16_t *coeff, int length) { } // Integer projection onto row vectors. -void vp9_int_pro_row_c(int16_t *hbuf, uint8_t const *ref, +// height: value range {16, 32, 64}. +void vp9_int_pro_row_c(int16_t hbuf[16], uint8_t const *ref, const int ref_stride, const int height) { int idx; - const int norm_factor = MAX(8, height >> 1); + const int norm_factor = height >> 1; for (idx = 0; idx < 16; ++idx) { int i; hbuf[idx] = 0; + // hbuf[idx]: 14 bit, dynamic range [0, 16320]. for (i = 0; i < height; ++i) hbuf[idx] += ref[i * ref_stride]; + // hbuf[idx]: 9 bit, dynamic range [0, 510]. hbuf[idx] /= norm_factor; ++ref; } |