[FFmpeg-cvslog] avcodec/cbs_av1: Add tx mode enum values

[Fei Wang]

ffmpeg | branch: master | Fei Wang <fei.w.wang at intel.com> | Mon Sep 11 15:52:25 2023 +0800| [6c3a5d625f917631d1c8bab31ed65ebe26d14f47] | committer: Haihao Xiang

avcodec/cbs_av1: Add tx mode enum values

Signed-off-by: Fei Wang <fei.w.wang at intel.com>
Reviewed-by: Neal Gompa <ngompa13 at gmail.com>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=6c3a5d625f917631d1c8bab31ed65ebe26d14f47
---

 libavcodec/av1.h                     | 7 +++++++
 libavcodec/cbs_av1_syntax_template.c | 4 ++--
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/libavcodec/av1.h b/libavcodec/av1.h
index 384f7cddc7..8704bc41c1 100644
--- a/libavcodec/av1.h
+++ b/libavcodec/av1.h
@@ -175,6 +175,13 @@ enum {
     AV1_RESTORE_SWITCHABLE = 3,
 };
 
+// TX mode (section 6.8.21)
+enum {
+    AV1_ONLY_4X4        = 0,
+    AV1_TX_MODE_LARGEST = 1,
+    AV1_TX_MODE_SELECT  = 2,
+};
+
 // Sequence Headers are actually unbounded because one can use
 // an arbitrary number of leading zeroes when encoding via uvlc.
 // The following estimate is based around using the lowest number
diff --git a/libavcodec/cbs_av1_syntax_template.c b/libavcodec/cbs_av1_syntax_template.c
index 6f09c4e410..3be1f2d30f 100644
--- a/libavcodec/cbs_av1_syntax_template.c
+++ b/libavcodec/cbs_av1_syntax_template.c
@@ -1028,9 +1028,9 @@ static int FUNC(read_tx_mode)(CodedBitstreamContext *ctx, RWContext *rw,
     int err;
 
     if (priv->coded_lossless)
-        infer(tx_mode, 0);
+        infer(tx_mode, AV1_ONLY_4X4);
     else
-        increment(tx_mode, 1, 2);
+        increment(tx_mode, AV1_TX_MODE_LARGEST, AV1_TX_MODE_SELECT);
 
     return 0;
 }