From: Jingning Han Date: Mon, 24 Nov 2014 22:40:42 +0000 (-0800) Subject: Adaptively adjust mode test kick-off thresholds in RTC coding X-Git-Tag: v1.4.0~460 X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=92a7cfc8bfb050870b238e9174829d5af136c403;p=libvpx Adaptively adjust mode test kick-off thresholds in RTC coding This commit allows the encoder to increase the mode test kick-off thresholds if the previous best mode renders all zero quantized coefficients, thereby saving motion search runs when possible. The compression performance of speed -5 and -6 is down by -0.446% and 0.591%, respectively. The runtime of speed -6 is improved by 10% for many test clips. vidyo1, 1000 kbps 16578 b/f, 40.316 dB, 7873 ms -> 16575 b/f, 40.262 dB, 7126 ms nik720p, 1000 kbps 33311 b/f, 38.651 dB, 7263 ms -> 33304 b/f, 38.629 dB, 6865 ms dark720p, 1000 kbps 33331 b/f, 39.718 dB, 13596 ms -> 33324 b/f, 39.651 dB, 12000 ms mmoving, 1000 kbps 33263 b/f, 40.983 dB, 7566 ms -> 33259 b/f, 40.978 dB, 7531 ms Change-Id: I7591617ff113e91125ec32c9b853e257fbc41d90 --- diff --git a/vp9/encoder/vp9_pickmode.c b/vp9/encoder/vp9_pickmode.c index c88a81887..fa1f89f24 100644 --- a/vp9/encoder/vp9_pickmode.c +++ b/vp9/encoder/vp9_pickmode.c @@ -530,7 +530,7 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x, static const int flag_list[4] = { 0, VP9_LAST_FLAG, VP9_GOLD_FLAG, VP9_ALT_FLAG }; RD_COST this_rdc, best_rdc; - uint8_t skip_txfm = 0; + uint8_t skip_txfm = 0, best_mode_skip_txfm = 0; // var_y and sse_y are saved to be used in skipping checking unsigned int var_y = UINT_MAX; unsigned int sse_y = UINT_MAX; @@ -678,7 +678,8 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x, if (!(cpi->sf.inter_mode_mask[bsize] & (1 << this_mode))) continue; - mode_rd_thresh = rd_threshes[mode_index]; + mode_rd_thresh = best_mode_skip_txfm ? rd_threshes[mode_index] << 1 : + rd_threshes[mode_index]; if (rd_less_than_thresh(best_rdc.rdcost, mode_rd_thresh, rd_thresh_freq_fact[mode_index])) continue; @@ -809,7 +810,7 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x, best_pred_filter = mbmi->interp_filter; best_tx_size = mbmi->tx_size; best_ref_frame = ref_frame; - skip_txfm = x->skip_txfm[0]; + best_mode_skip_txfm = x->skip_txfm[0]; if (reuse_inter_pred) { free_pred_buffer(best_pred); @@ -837,7 +838,7 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x, mbmi->ref_frame[0] = best_ref_frame; mbmi->mv[0].as_int = frame_mv[best_mode][best_ref_frame].as_int; xd->mi[0].src_mi->bmi[0].as_mv[0].as_int = mbmi->mv[0].as_int; - x->skip_txfm[0] = skip_txfm; + x->skip_txfm[0] = best_mode_skip_txfm; // Perform intra prediction search, if the best SAD is above a certain // threshold. @@ -887,7 +888,7 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x, mbmi->uv_mode = this_mode; mbmi->mv[0].as_int = INVALID_MV; } else { - x->skip_txfm[0] = skip_txfm; + x->skip_txfm[0] = best_mode_skip_txfm; mbmi->tx_size = saved_tx_size; } }