Optimize source content calculation
Determined whether grading content can be skipped based on the frame
level sad stat.
Borg test result on rtc_derf set:
avg_psnr: ovr_psnr: ssim: encoding_spdup:
speed 9: -0.004 -0.013 -0.061 0.2
speed 10: 0.099 0.113 0.176 0.7
STATS_CHANGED for rtc_derf speed 9 & 10
Change-Id: I3c199c7aa89f21a9dd0eb05bf1b81a6dc0f32b5a
diff --git a/av1/encoder/encodeframe.c b/av1/encoder/encodeframe.c
index ed277b2..5d99847 100644
--- a/av1/encoder/encodeframe.c
+++ b/av1/encoder/encodeframe.c
@@ -753,6 +753,44 @@
}
}
+/*!\brief Determine whether grading content can be skipped based on sad stat
+ *
+ * \ingroup partition_search
+ * \callgraph
+ * \callergraph
+ */
+static AOM_INLINE bool is_calc_src_content_needed(AV1_COMP *cpi, int mi_row,
+ int mi_col) {
+ AV1_COMMON *const cm = &cpi->common;
+ bool do_calc_src_content = true;
+
+ if (cpi->oxcf.speed < 9) return do_calc_src_content;
+
+ // TODO(yunqing): Need to consider 4 64x64 results if later this is used for
+ // 128x128 sb size.
+ if (cpi->src_sad_blk_64x64 != NULL && AOMMIN(cm->width, cm->height) < 360) {
+ const int sb_size_by_mb = (cm->seq_params->sb_size == BLOCK_128X128)
+ ? (cm->seq_params->mib_size >> 1)
+ : cm->seq_params->mib_size;
+ const int sb_cols =
+ (cm->mi_params.mi_cols + sb_size_by_mb - 1) / sb_size_by_mb;
+ const int sbi_col = mi_col / sb_size_by_mb;
+ const int sbi_row = mi_row / sb_size_by_mb;
+ // The threshold is determined based on kLowSad and kHighSad threshold and
+ // test results.
+ const uint64_t thresh_low = 15000;
+ const uint64_t thresh_high = 40000;
+ const uint64_t blk_sad =
+ cpi->src_sad_blk_64x64[sbi_col + sbi_row * sb_cols];
+
+ if (blk_sad > thresh_low && blk_sad < thresh_high) {
+ do_calc_src_content = false;
+ }
+ }
+
+ return do_calc_src_content;
+}
+
/*!\brief Determine whether grading content is needed based on sf and frame stat
*
* \ingroup partition_search
@@ -770,7 +808,7 @@
cpi->svc.number_spatial_layers <= 1 &&
cm->current_frame.frame_type != KEY_FRAME) {
if (!cpi->sf.rt_sf.check_scene_detection || cpi->rc.frame_source_sad > 0) {
- calc_src_content = true;
+ calc_src_content = is_calc_src_content_needed(cpi, mi_row, mi_col);
} else {
x->content_state_sb.source_sad_nonrd = kZeroSad;
}
