Commit f7b4364c authored by James Zern's avatar James Zern
Browse files

vp9_aq_cyclicrefresh: fix unused-function warning

delete apply_cyclic_refresh_bitrate(). unused since:
3472cbbd vp9 aq-mode=3: Keep it on even at low bitrates.

Change-Id: I0fac9a31b59504e31000ac3a8f0b68e8d4320113
parent 85dccb69
......@@ -59,27 +59,6 @@ void vp9_cyclic_refresh_free(CYCLIC_REFRESH *cr) {
vpx_free(cr);
}
// Check if we should turn off cyclic refresh based on bitrate condition.
static int apply_cyclic_refresh_bitrate(const VP9_COMMON *cm,
const RATE_CONTROL *rc) {
// Turn off cyclic refresh if bits available per frame is not sufficiently
// larger than bit cost of segmentation. Segment map bit cost should scale
// with number of seg blocks, so compare available bits to number of blocks.
// Average bits available per frame = avg_frame_bandwidth
// Number of (8x8) blocks in frame = mi_rows * mi_cols;
const float factor = 0.15f;
const int number_blocks = cm->mi_rows * cm->mi_cols;
// The condition below corresponds to turning off at target bitrates:
// (at 30fps), ~8kbps for CIF, 20kbps for VGA, 60kps for HD/720p.
// Also turn off at very small frame sizes, to avoid too large fraction of
// superblocks to be refreshed per frame. Threshold below is less than QCIF.
if (rc->avg_frame_bandwidth < factor * number_blocks ||
number_blocks / 64 < 5)
return 0;
else
return 1;
}
// Check if this coding block, of size bsize, should be considered for refresh
// (lower-qp coding). Decision can be based on various factors, such as
// size of the coding block (i.e., below min_block size rejected), coding
......
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