Support for parsing CABAC coded bitstreams

webrtc/common_video/h264/pps_parser.cc

Index: webrtc/common_video/h264/pps_parser.cc
diff --git a/webrtc/common_video/h264/pps_parser.cc b/webrtc/common_video/h264/pps_parser.cc
index a48d27bfc7fd8c2706b78dc7b72b41a12d429ac4..fcabc91aa726ebf7bc9385cea3f90cb9cda6fde9 100644
--- a/webrtc/common_video/h264/pps_parser.cc
+++ b/webrtc/common_video/h264/pps_parser.cc
@@ -82,9 +82,7 @@ rtc::Optional<PpsParser::PpsState> PpsParser::ParseInternal(
   // entropy_coding_mode_flag: u(1)
   uint32_t entropy_coding_mode_flag;
   RETURN_EMPTY_ON_FAIL(bit_buffer->ReadBits(&entropy_coding_mode_flag, 1));
-  // TODO(pbos): Implement CABAC support if spotted in the wild.
-  RTC_CHECK(entropy_coding_mode_flag == 0)
-      << "Don't know how to parse CABAC streams.";
+  pps.entropy_coding_mode_flag = !!entropy_coding_mode_flag;

[magjed_webrtc, 2016/09/28 15:13:01]

nit: !! is cute, but I would prefer != 0. I don't think the style guide mentions
this. I don't want to enforce my subjective style, so ignore this comment if you
want.

   // bottom_field_pic_order_in_frame_present_flag: u(1)
   uint32_t bottom_field_pic_order_in_frame_present_flag;
   RETURN_EMPTY_ON_FAIL(