commit 1cb1c0027fc5e6f87afcc0f437da9086aca10799
author Hui Su <huisu@google.com> Mon Feb 05 18:21:20 2018 -0800
committer Hui Su <huisu@google.com> Mon Feb 19 21:47:41 2018 +0000
tree 06282629990bc7bb42dad291fa0198a56dd3b7cf
parent cd93bf429cd7bac00e2bf92433beb1a0a4d78310

Add cdf_update_mode experiment

Allow the CDF update to operate in different modes, e.g. update vs no
update.

The update mode is transmitted in the uncompressed frame header of
every keyframe and intra-only frame.

This patch only adds bitstream signaling and API support. The
implementation of the update modes will be in later patches.

Change-Id: Ic9fcd60e8a75f9c01f414253823d78cf9b3113dd

aomenc.c

diff --git a/aomenc.c b/aomenc.c
index 2493449..44f11c2 100644
--- a/aomenc.c
+++ b/aomenc.c
@@ -645,9 +645,16 @@
 
 static const arg_def_t tune_content = ARG_DEF_ENUM(
     NULL, "tune-content", 1, "Tune content type", tune_content_enum);
-#endif
 
-#if CONFIG_AV1_ENCODER
+#if CONFIG_CDF_UPDATE_MODE
+static const arg_def_t cdf_update_mode =
+    ARG_DEF(NULL, "cdf-update-mode", 1,
+            "CDF update rate for entropy coding "
+            "(0: off; 1: update all the time(default); "
+            "2: update half the time; "
+            "3: update quarter of the time)");
+#endif  // CONFIG_CDF_UPDATE_MODE
+
 #if CONFIG_EXT_PARTITION
 static const struct arg_enum_list superblock_size_enum[] = {
   { "dynamic", AOM_SUPERBLOCK_SIZE_DYNAMIC },
@@ -705,6 +712,9 @@
                                        &frame_periodic_boost,
                                        &noise_sens,
                                        &tune_content,
+#if CONFIG_CDF_UPDATE_MODE
+                                       &cdf_update_mode,
+#endif  // CONFIG_CDF_UPDATE_MODE
 #if CONFIG_CICP
                                        &input_color_primaries,
                                        &input_transfer_characteristics,
@@ -777,6 +787,9 @@
                                         AV1E_SET_FRAME_PERIODIC_BOOST,
                                         AV1E_SET_NOISE_SENSITIVITY,
                                         AV1E_SET_TUNE_CONTENT,
+#if CONFIG_CDF_UPDATE_MODE
+                                        AV1E_SET_CDF_UPDATE_MODE,
+#endif  // CONFIG_CDF_UPDATE_MODE
 #if CONFIG_CICP
                                         AV1E_SET_COLOR_PRIMARIES,
                                         AV1E_SET_TRANSFER_CHARACTERISTICS,
@@ -801,7 +814,7 @@
 #endif
                                         AV1E_SET_DISABLE_TEMPMV,
                                         0 };
-#endif
+#endif  // CONFIG_AV1_ENCODER
 
 static const arg_def_t *no_args[] = { NULL };