Merge "DngCreator: Populate baseline exposure tag" into oc-dev (db1de8dd) · Commits · e / os / android_frameworks_base

core/jni/android_hardware_camera2_DngCreator.cpp

+18 −0

Original line number	Diff line number	Diff line
		@@ -21,6 +21,7 @@
		#include <algorithm>
		#include <memory>
		#include <vector>
		#include <cmath>

		#include <utils/Log.h>
		#include <utils/Errors.h>
		@@ -1374,6 +1375,23 @@ static sp<TiffWriter> DngCreator_setup(JNIEnv* env, jobject thiz, uint32_t image
		TIFF_IFD_0), env, TAG_ISOSPEEDRATINGS, writer);
		}

		{
		// Baseline exposure
		camera_metadata_entry entry =
		results.find(ANDROID_CONTROL_POST_RAW_SENSITIVITY_BOOST);
		BAIL_IF_EMPTY_RET_NULL_SP(entry, env, TAG_BASELINEEXPOSURE, writer);

		// post RAW gain should be boostValue / 100
		double postRAWGain = static_cast<double> (entry.data.i32[0]) / 100.f;
		// Baseline exposure should be in EV units so log2(gain) =
		// log10(gain)/log10(2)
		double baselineExposure = std::log(postRAWGain) / std::log(2.0f);
		int32_t baseExposureSRat[] = { static_cast<int32_t> (baselineExposure * 100),
		100 };
		BAIL_IF_INVALID_RET_NULL_SP(writer->addEntry(TAG_BASELINEEXPOSURE, 1,
		baseExposureSRat, TIFF_IFD_0), env, TAG_BASELINEEXPOSURE, writer);
		}

		{
		// focal length
		camera_metadata_entry entry =