Automatically turn on/off screen content tools
Turn "allow_screen_content_tools" on when the source video has many blocks
with only few different colors. The automatic detection is enabled by
defualt (or with command line flag "--tune-content=default"). With
"--tune-content=screen", the screen content tools are always turned on.
On the screen_content test set, the "default" setting is less than 0.3%
worse than the "screen" setting on keyframe encoding.
Change-Id: Iac7ab8952c96531d1fae84da1823291f5987519c
diff --git a/av1/encoder/rdopt.c b/av1/encoder/rdopt.c
index def2a36..fa4b970 100644
--- a/av1/encoder/rdopt.c
+++ b/av1/encoder/rdopt.c
@@ -1591,6 +1591,43 @@
visible_rows);
}
+#if CONFIG_PALETTE || CONFIG_INTRABC
+int av1_count_colors(const uint8_t *src, int stride, int rows, int cols) {
+ int val_count[256];
+ memset(val_count, 0, sizeof(val_count));
+ for (int r = 0; r < rows; ++r) {
+ for (int c = 0; c < cols; ++c) {
+ ++val_count[src[r * stride + c]];
+ }
+ }
+ int n = 0;
+ for (int i = 0; i < 256; ++i) {
+ if (val_count[i]) ++n;
+ }
+ return n;
+}
+
+#if CONFIG_HIGHBITDEPTH
+int av1_count_colors_highbd(const uint8_t *src8, int stride, int rows, int cols,
+ int bit_depth) {
+ assert(bit_depth <= 12);
+ const uint16_t *src = CONVERT_TO_SHORTPTR(src8);
+ int val_count[1 << 12];
+ memset(val_count, 0, (1 << 12) * sizeof(val_count[0]));
+ for (int r = 0; r < rows; ++r) {
+ for (int c = 0; c < cols; ++c) {
+ ++val_count[src[r * stride + c]];
+ }
+ }
+ int n = 0;
+ for (int i = 0; i < (1 << bit_depth); ++i) {
+ if (val_count[i]) ++n;
+ }
+ return n;
+}
+#endif // CONFIG_HIGHBITDEPTH
+#endif // CONFIG_PALETTE || CONFIG_INTRABC
+
void av1_dist_block(const AV1_COMP *cpi, MACROBLOCK *x, int plane,
BLOCK_SIZE plane_bsize, int block, int blk_row, int blk_col,
TX_SIZE tx_size, int64_t *out_dist, int64_t *out_sse,
