camera3: Update CameraMetadata vendor tag handling. (e03a7eab) · Commits · e / os / android_frameworks_base

core/jni/android_hardware_camera2_CameraMetadata.cpp

+48 −23

Original line number	Diff line number	Diff line
		@@ -18,8 +18,12 @@
		// #define LOG_NDEBUG 0
		// #define LOG_NNDEBUG 0
		#define LOG_TAG "CameraMetadata-JNI"
		#include <utils/Errors.h>
		#include <utils/Log.h>
		#include <utils/RefBase.h>
		#include <utils/Vector.h>
		#include <utils/SortedVector.h>
		#include <utils/KeyedVector.h>
		#include <string.h>

		#include "jni.h"
		@@ -483,12 +487,20 @@ static jint CameraMetadata_getTagFromKey(JNIEnv *env, jobject thiz, jstring keyN

		ALOGV("%s (key = '%s')", __FUNCTION__, key);

		sp<VendorTagDescriptor> vTags = VendorTagDescriptor::getGlobalVendorTagDescriptor();

		SortedVector<String8> vendorSections = vTags->getAllSectionNames();
		size_t vendorSectionCount = vendorSections.size();

		// First, find the section by the longest string match
		const char *section = NULL;
		size_t sectionIndex = 0;
		size_t sectionLength = 0;
		for (size_t i = 0; i < ANDROID_SECTION_COUNT; ++i) {
		const char *str = camera_metadata_section_names[i];
		size_t totalSectionCount = ANDROID_SECTION_COUNT + vendorSectionCount;
		for (size_t i = 0; i < totalSectionCount; ++i) {

		const char *str = (i < ANDROID_SECTION_COUNT) ? camera_metadata_section_names[i] :
		vendorSections[i - ANDROID_SECTION_COUNT].string();
		ALOGVV("%s: Trying to match against section '%s'",
		__FUNCTION__, str);
		if (strstr(key, str) == key) { // key begins with the section name
		@@ -502,12 +514,11 @@ static jint CameraMetadata_getTagFromKey(JNIEnv *env, jobject thiz, jstring keyN
		sectionIndex = i;
		sectionLength = strLength;

		ALOGVV("%s: Found new best section (idx %d)", __FUNCTION__, sectionIndex);
		ALOGVV("%s: Found new best section (%s)", __FUNCTION__, section);
		}
		}
		}

		// TODO: vendor ext
		// TODO: Make above get_camera_metadata_section_from_name ?

		if (section == NULL) {
		@@ -524,14 +535,17 @@ static jint CameraMetadata_getTagFromKey(JNIEnv *env, jobject thiz, jstring keyN
		if (sectionLength + 1 >= keyLength) {
		jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
		"Key length too short for key '%s')", key);
		return 0;
		}

		// Match rest of name against the tag names in that section only
		uint32_t tag = 0;
		if (sectionIndex < ANDROID_SECTION_COUNT) {
		// Match built-in tags (typically android.*)
		uint32_t tagBegin, tagEnd; // [tagBegin, tagEnd)
		tagBegin = camera_metadata_section_bounds[sectionIndex][0];
		tagEnd = camera_metadata_section_bounds[sectionIndex][1];

		uint32_t tag;
		for (tag = tagBegin; tag < tagEnd; ++tag) {
		const char *tagName = get_camera_metadata_tag_name(tag);

		@@ -542,14 +556,25 @@ static jint CameraMetadata_getTagFromKey(JNIEnv *env, jobject thiz, jstring keyN
		}
		}

		// TODO: vendor ext
		// TODO: Make above get_camera_metadata_tag_from_name ?

		if (tag == tagEnd) {
		jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
		"Could not find tag name for key '%s')", key);
		return 0;
		}
		} else {
		// Match vendor tags (typically com.*)
		const String8 sectionName(section);
		const String8 tagName(keyTagName);

		status_t res = OK;
		if ((res = vTags->lookupTag(tagName, sectionName, &tag)) != OK) {
		jniThrowExceptionFmt(env, "java/lang/IllegalArgumentException",
		"%s: No vendor tag matches key '%s'", __FUNCTION__, key);
		return 0;
		}
		}

		// TODO: Make above get_camera_metadata_tag_from_name ?

		return tag;
		}