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Merge "Adding several consts to assign_std_frame_bits()."

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Dmitry Kovalev 2014-05-22 19:26:39 -07:00 committed by Gerrit Code Review
commit d1ad3b678b
1 changed files with 8 additions and 17 deletions
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25
vp9/encoder/vp9_firstpass.c
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@ -1757,23 +1757,14 @@ static void assign_std_frame_bits(VP9_COMP *cpi, FIRSTPASS_STATS *this_frame) {
const int max_bits = frame_max_bits(&cpi->rc, oxcf);
// Calculate modified prediction error used in bit allocation.
const double modified_err = calculate_modified_err(twopass, oxcf, this_frame);
int target_frame_size;
double err_fraction;
if (twopass->gf_group_error_left > 0)
// What portion of the remaining GF group error is used by this frame.
err_fraction = modified_err / twopass->gf_group_error_left;
else
err_fraction = 0.0;
// How many of those bits available for allocation should we give it?
target_frame_size = (int)((double)twopass->gf_group_bits * err_fraction);
// Clip target size to 0 - max_bits (or cpi->twopass.gf_group_bits) at
// the top end.
target_frame_size = clamp(target_frame_size, 0,
MIN(max_bits, (int)twopass->gf_group_bits));
// What portion of the remaining GF group error is used by this frame.
const double err_fraction = twopass->gf_group_error_left > 0 ?
modified_err / twopass->gf_group_error_left : 0.0;
// How many of those bits available for allocation should we give it? Clip
// target size to 0 - max_bits (or cpi->twopass.gf_group_bits) at the top end.
const int target_frame_size =
clamp((int)(twopass->gf_group_bits * err_fraction),
0, MIN(max_bits, (int)twopass->gf_group_bits));
// Adjust error and bits remaining.
twopass->gf_group_error_left -= (int64_t)modified_err;