avcodec/cbs_av1: add an option to select an operating point

This implements the function drop_obu() as defined in Setion 6.2.1 from the
spec.
In a reading only scenario, units that belong to an operating point the
caller doesn't want should not be parsed.

Signed-off-by: James Almer <jamrial@gmail.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/libavcodec/cbs_av1.h b/libavcodec/cbs_av1.h
index 799470015c..1fc80dcfa0 100644
--- a/libavcodec/cbs_av1.h
+++ b/libavcodec/cbs_av1.h
@@ -425,6 +425,8 @@ typedef struct AV1ReferenceFrameState {
 } AV1ReferenceFrameState;
 
 typedef struct CodedBitstreamAV1Context {
+    const AVClass *class;
+
     AV1RawSequenceHeader *sequence_header;
     AVBufferRef          *sequence_header_ref;
 
@@ -453,6 +455,9 @@ typedef struct CodedBitstreamAV1Context {
     int tile_num;
 
     AV1ReferenceFrameState ref[AV1_NUM_REF_FRAMES];
+
+    // AVOptions
+    int operating_point;
 } CodedBitstreamAV1Context;