From 33fcb0faf028abc312524d7bbe045322068e63b3 Mon Sep 17 00:00:00 2001
From: He Junyan <junyan.he@intel.com>
Date: Mon, 28 Sep 2020 13:33:00 +0800
Subject: [PATCH] codecparsers: av1: add the set_operating_point() API.

The av1 can support multi layers when scalability is enabled. We
need an API to set the operating point and filter the OBUs just
belonging to some layers(the layers are specified by the operating
point).

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/1464>
---
 gst-libs/gst/codecparsers/gstav1parser.c | 32 ++++++++++++++++++++++++++++++--
 gst-libs/gst/codecparsers/gstav1parser.h |  5 +++++
 2 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/gst-libs/gst/codecparsers/gstav1parser.c b/gst-libs/gst/codecparsers/gstav1parser.c
index 6e09551..c2695e9 100644
--- a/gst-libs/gst/codecparsers/gstav1parser.c
+++ b/gst-libs/gst/codecparsers/gstav1parser.c
@@ -1289,7 +1289,8 @@ gst_av1_parser_parse_sequence_header_obu (GstAV1Parser * parser,
     }
   }
 
-  /* Let user decide the operatingPoint, move it later
+  /* Let user decide the operatingPoint,
+     implemented by calling gst_av1_parser_set_operating_point()
      operatingPoint = choose_operating_point( )
      operating_point_idc = operating_point_idc[ operatingPoint ] */
 
@@ -1451,7 +1452,7 @@ gst_av1_parser_parse_sequence_header_obu (GstAV1Parser * parser,
   if (parser->state.operating_point < 0 ||
       parser->state.operating_point >
       seq_header->operating_points_cnt_minus_1) {
-    GST_INFO ("Invalid operating_point %d set by user, just use 0",
+    GST_WARNING ("Invalid operating_point %d set by user, just use 0",
         parser->state.operating_point);
     parser->state.operating_point_idc = seq_header->operating_points[0].idc;
   } else {
@@ -4648,6 +4649,33 @@ gst_av1_parser_parse_frame_obu (GstAV1Parser * parser, GstAV1OBU * obu,
 }
 
 /**
+ * gst_av1_parser_set_operating_point:
+ * @parser: the #GstAV1Parser
+ * @operating_point: the operating point to set
+ *
+ * Set the operating point to filter OBUs.
+ *
+ * Returns: The #GstAV1ParserResult.
+ *
+ * Since: 1.20
+ */
+GstAV1ParserResult
+gst_av1_parser_set_operating_point (GstAV1Parser * parser,
+    gint32 operating_point)
+{
+  g_return_val_if_fail (parser != NULL, GST_AV1_PARSER_INVALID_OPERATION);
+  g_return_val_if_fail (operating_point >= 0, GST_AV1_PARSER_INVALID_OPERATION);
+
+  if (parser->seq_header &&
+      operating_point > parser->seq_header->operating_points_cnt_minus_1)
+    return GST_AV1_PARSER_INVALID_OPERATION;
+
+  /* Decide whether it is valid when sequence comes. */
+  parser->state.operating_point = operating_point;
+  return GST_AV1_PARSER_OK;
+}
+
+/**
  * gst_av1_parser_new:
  *
  * Allocates a new #GstAV1Parser,
diff --git a/gst-libs/gst/codecparsers/gstav1parser.h b/gst-libs/gst/codecparsers/gstav1parser.h
index afcce6f..c180ab1 100644
--- a/gst-libs/gst/codecparsers/gstav1parser.h
+++ b/gst-libs/gst/codecparsers/gstav1parser.h
@@ -1831,6 +1831,11 @@ gst_av1_parser_reference_frame_update (GstAV1Parser * parser,
     GstAV1FrameHeaderOBU * frame_header);
 
 GST_CODEC_PARSERS_API
+GstAV1ParserResult
+gst_av1_parser_set_operating_point (GstAV1Parser * parser,
+    gint32 operating_point);
+
+GST_CODEC_PARSERS_API
 GstAV1Parser * gst_av1_parser_new (void);
 
 GST_CODEC_PARSERS_API
-- 
2.7.4