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Refactor set vbp thresholds function

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Code refactoring.

Change-Id: I73b6fcc0444155ee46c1efa5253c1d608c6439cb
This commit is contained in:
Yunqing Wang 2015-03-17 12:19:15 -07:00
parent 1f9b2b77ad
commit c0423abf00
1 changed files with 18 additions and 16 deletions
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34
vp9/encoder/vp9_encodeframe.c
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@ -486,32 +486,34 @@ void vp9_set_vbp_thresholds(VP9_COMP *cpi, int q) {
return;
} else {
VP9_COMMON *const cm = &cpi->common;
const VP9EncoderConfig *const oxcf = &cpi->oxcf;
const int is_key_frame = (cm->frame_type == KEY_FRAME);
const int use_4x4_partition = is_key_frame;
const int low_res = (cm->width <= 352 && cm->height <= 288);
const int threshold_multiplier = is_key_frame ? 80 : 4;
const int64_t threshold_base = (int64_t)(threshold_multiplier *
vp9_convert_qindex_to_q(q, cm->bit_depth));
cpi->vbp_threshold = threshold_base;
cpi->vbp_threshold_bsize_min = threshold_base << oxcf->speed;
cpi->vbp_threshold_bsize_max = threshold_base;
if (is_key_frame) {
cpi->vbp_threshold = threshold_base >> 2;
cpi->vbp_threshold_bsize_min = threshold_base << 2;
} else if (low_res) {
cpi->vbp_threshold_bsize_min = threshold_base << 3;
cpi->vbp_threshold_bsize_max = threshold_base >> 2;
}
// TODO(marpan): Allow 4x4 partitions for inter-frames.
// use_4x4_partition = (variance4x4downsample[i2 + j] == 1);
// If 4x4 partition is not used, then 8x8 partition will be selected
// if variance of 16x16 block is very high, so use larger threshold
// for 16x16 (threshold_bsize_min) in that case.
cpi->vbp_threshold_16x16 = (use_4x4_partition) ?
cpi->vbp_threshold : cpi->vbp_threshold_bsize_min;
cpi->vbp_bsize_min = (use_4x4_partition) ? BLOCK_8X8 : BLOCK_16X16;
if (is_key_frame) {
cpi->vbp_threshold = threshold_base >> 2;
cpi->vbp_threshold_bsize_max = threshold_base;
cpi->vbp_threshold_bsize_min = threshold_base << 2;
cpi->vbp_threshold_16x16 = cpi->vbp_threshold;
cpi->vbp_bsize_min = BLOCK_8X8;
} else {
cpi->vbp_threshold = threshold_base;
if (cm->width <= 352 && cm->height <= 288) {
cpi->vbp_threshold_bsize_max = threshold_base >> 2;
cpi->vbp_threshold_bsize_min = threshold_base << 3;
} else {
cpi->vbp_threshold_bsize_max = threshold_base;
cpi->vbp_threshold_bsize_min = threshold_base << cpi->oxcf.speed;
}
cpi->vbp_threshold_16x16 = cpi->vbp_threshold_bsize_min;
cpi->vbp_bsize_min = BLOCK_16X16;
}
}
}