commit 17693b690a0d54041d2651059692575cecb61667
author fei.deng <fei.deng@amlogic.com> Wed Aug 28 20:13:17 2024 +0800
committer fei.deng <fei.deng@amlogic.com> Thu Aug 29 13:30:30 2024 +0800
tree 5300acfb67ef7f98c3c1381a45df54152a63c71b
parent dc626904e14def9426e19bd4b6b7f9db3bf8c5fc

amlv4l2dec: CB2 increase margin number [1/1]

PD#SWPL-182760

Problem:
default capture buffer margin number is 4.
sometimes compositor do not release capture
in time.so video freeze

Solution:
1.set default capture margin count to 6
2.set margin count to 4 when on low memory mode

Verify:
ap222

Change-Id: I7dfceaaca1cc938021f36f85205c1f10b512b573
Signed-off-by: fei.deng <fei.deng@amlogic.com>

src/gstamlv4l2object.c

diff --git a/src/gstamlv4l2object.c b/src/gstamlv4l2object.c
index 246eccc..44aaae5 100644
--- a/src/gstamlv4l2object.c
+++ b/src/gstamlv4l2object.c
@@ -3742,7 +3742,12 @@
         GST_DEBUG_OBJECT(v4l2object->dbg_obj, "output cfg dw mode to %d", decParm->cfg.double_write_mode);
         v4l2object->dw_mode = decParm->cfg.double_write_mode;
 
-        decParm->cfg.ref_buf_margin = GST_AML_V4L2_DEFAULT_CAP_BUF_MARGIN;
+        if (v4l2object->low_memory_mode) {
+            decParm->cfg.ref_buf_margin = GST_AML_V4L2_LOW_MEMORY_CAP_BUF_MARGIN;
+        } else {
+            decParm->cfg.ref_buf_margin = GST_AML_V4L2_DEFAULT_CAP_BUF_MARGIN;
+        }
+
         env = getenv("V4L2_SET_AMLOGIC_MARGIN_NUM");
         if (env)
         {

src/gstamlv4l2object.h

diff --git a/src/gstamlv4l2object.h b/src/gstamlv4l2object.h
index 37dc71b..1c2651c 100644
--- a/src/gstamlv4l2object.h
+++ b/src/gstamlv4l2object.h
@@ -44,7 +44,8 @@
 #define GST_AML_V4L2_MIN_BUFFERS 2
 #define GST_AML_V4L2_MAX_AV1_CAP_BUFS 16
 #define GST_AML_V4L2_MAX_VP9_CAP_BUFS 20
-#define GST_AML_V4L2_DEFAULT_CAP_BUF_MARGIN 4
+#define GST_AML_V4L2_DEFAULT_CAP_BUF_MARGIN 6
+#define GST_AML_V4L2_LOW_MEMORY_CAP_BUF_MARGIN 4
 
 /* max frame width/height */
 #define GST_AML_V4L2_MAX_SIZE (1 << 15) /* 2^15 == 32768 */