[FFmpeg-devel] [PATCH v1 22/23] avcodec/vvc: add adaptive color transform support

[toqsxw@gmail.com]

From: Wu Jianhua <toqsxw@outlook.com>

passed files:
    ACT_A_Kwai_3.bit
    ACT_B_Kwai_3.bit

Signed-off-by: Wu Jianhua <toqsxw@outlook.com>
---
 libavcodec/vvc/ctu.c   |  2 ++
 libavcodec/vvc/intra.c | 13 +++++++++++--
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/libavcodec/vvc/ctu.c b/libavcodec/vvc/ctu.c
index e160199580..62c9d4f5c0 100644
--- a/libavcodec/vvc/ctu.c
+++ b/libavcodec/vvc/ctu.c
@@ -392,6 +392,8 @@ static int hls_transform_unit(VVCLocalContext *lc, int x0, int y0,int tu_width,
             if (ret < 0)
                 return ret;
             set_tb_tab(fc->tab.tu_coded_flag[tb->c_idx], tu->coded_flag[tb->c_idx], fc, tb);
+        } else if (cu->act_enabled_flag) {
+            memset(tb->coeffs, 0, tb->tb_width * tb->tb_height * sizeof(*tb->coeffs));
         }
         if (tb->c_idx != CR)
             set_tb_size(fc, tb);
diff --git a/libavcodec/vvc/intra.c b/libavcodec/vvc/intra.c
index 0ea33e1e73..f56b43be66 100644
--- a/libavcodec/vvc/intra.c
+++ b/libavcodec/vvc/intra.c
@@ -523,13 +523,14 @@ static void lmcs_scale_chroma(VVCLocalContext *lc, TransformUnit *tu, TransformB
 static void add_residual(const VVCLocalContext *lc, TransformUnit *tu, const int target_ch_type)
 {
     const VVCFrameContext *fc = lc->fc;
+    const CodingUnit *cu      = lc->cu;
 
     for (int i = 0; i < tu->nb_tbs; i++) {
         TransformBlock *tb      = tu->tbs + i;
         const int c_idx         = tb->c_idx;
         const int ch_type       = c_idx > 0;
         const ptrdiff_t stride  = fc->frame->linesize[c_idx];
-        const bool has_residual = tb->has_coeffs ||
+        const bool has_residual = tb->has_coeffs || cu->act_enabled_flag ||
                                   (c_idx && tu->joint_cbcr_residual_flag);
         uint8_t *dst            = POS(c_idx, tb->x0, tb->y0);
 
@@ -543,12 +544,13 @@ static void itransform(VVCLocalContext *lc, TransformUnit *tu, const int target_
     const VVCFrameContext *fc = lc->fc;
     const CodingUnit *cu      = lc->cu;
     TransformBlock *tbs       = tu->tbs;
+    const bool is_act_luma    = cu->act_enabled_flag && target_ch_type == LUMA;
 
     for (int i = 0; i < tu->nb_tbs; i++) {
         TransformBlock *tb = tbs + i;
         const int c_idx    = tb->c_idx;
         const int ch_type  = c_idx > 0;
-        const bool do_itx  = ch_type == target_ch_type;
+        const bool do_itx  = is_act_luma || !cu->act_enabled_flag && ch_type == target_ch_type;
 
         if (tb->has_coeffs && do_itx) {
             if (cu->bdpcm_flag[tb->c_idx])
@@ -568,6 +570,13 @@ static void itransform(VVCLocalContext *lc, TransformUnit *tu, const int target_
             lmcs_scale_chroma(lc, tu, tb, target_ch_type);
         }
     }
+
+    if (is_act_luma) {
+        fc->vvcdsp.itx.adaptive_color_transform(
+            tbs[LUMA].coeffs, tbs[CB].coeffs, tbs[CR].coeffs,
+            tbs[LUMA].tb_width, tbs[LUMA].tb_height);
+    }
+
     add_residual(lc, tu, target_ch_type);
 }
 
-- 
2.44.0.windows.1

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