Adding test for SingleNalUnit mode

modules/video_coding/codecs/test/videoprocessor_integrationtest.cc

Index: modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
diff --git a/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc b/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
index 4e4262a9f908bf64320fd022926313b6efde1f94..75b8e6f36fbaef60f71bfca7eeba0f3fdcefd254 100644
--- a/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
+++ b/modules/video_coding/codecs/test/videoprocessor_integrationtest.cc
@@ -175,6 +175,7 @@ void VideoProcessorIntegrationTest::ProcessFramesAndMaybeVerify(
     const RateProfile& rate_profile,
     const std::vector<RateControlThresholds>* rc_thresholds,
     const QualityThresholds* quality_thresholds,
+    const BitstreamThresholds* bs_thresholds,
     const VisualizationParams* visualization_params) {
   // The Android HW codec needs to be run on a task queue, so we simply always
   // run the test on a task queue.
@@ -245,6 +246,10 @@ void VideoProcessorIntegrationTest::ProcessFramesAndMaybeVerify(
   while (frame_number < num_frames) {
     UpdateRateControlMetrics(frame_number);
 
+    if (bs_thresholds) {
+      VerifyBitstream(frame_number, *bs_thresholds);
+    }
+
     ++frame_number;
 
     if (frame_number ==
@@ -334,6 +339,13 @@ void VideoProcessorIntegrationTest::CreateEncoderAndDecoder() {
     case kVideoCodecH264:
       // TODO(brandtr): Generalize so that we support multiple profiles here.
       codec = cricket::VideoCodec(cricket::kH264CodecName);
+      if (config_.packetization_mode == H264PacketizationMode::NonInterleaved) {
+        codec.SetParam(cricket::kH264FmtpPacketizationMode, "1");
+      } else {
+        RTC_CHECK_EQ(config_.packetization_mode,
+                     H264PacketizationMode::SingleNalUnit);
+        codec.SetParam(cricket::kH264FmtpPacketizationMode, "0");
+      }
       encoder_.reset(encoder_factory->CreateVideoEncoder(codec));
       decoder_ =
           decoder_factory_->CreateVideoDecoderWithParams(codec, decoder_params);
@@ -560,6 +572,14 @@ void VideoProcessorIntegrationTest::PrintRateControlMetrics(
   printf("\n");
 }
 
+void VideoProcessorIntegrationTest::VerifyBitstream(
+    int frame_number,
+    const BitstreamThresholds& bs_thresholds) {
+  RTC_CHECK_GE(frame_number, 0);
+  const FrameStatistic* frame_stat = stats_.GetFrame(frame_number);
+  EXPECT_LE(*(frame_stat->max_nalu_length), bs_thresholds.max_nalu_length);
+}
+
 // Temporal layer index corresponding to frame number, for up to 3 layers.
 int VideoProcessorIntegrationTest::TemporalLayerIndexForFrame(
     int frame_number) const {