Java and JNI support for native VideoCapabilities. (5b11d4cc) · Commits · e / os / android_frameworks_base

media/java/android/media/MediaCodecInfo.java

+1767 −1522

File changed.

Preview size limit exceeded, changes collapsed.

media/jni/android_media_CodecCapabilities.cpp

+165 −0

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@ namespace android {

		struct fields_t {
		jfieldID audioCapsContext;
		jfieldID videoCapsContext;
		};
		static fields_t fields;

		@@ -40,6 +41,33 @@ static AudioCapabilities* getAudioCapabilities(JNIEnv *env, jobject thiz) {
		return p;
		}

		static VideoCapabilities* getVideoCapabilities(JNIEnv *env, jobject thiz) {
		VideoCapabilities* const p = (VideoCapabilities*)env->GetLongField(
		thiz, fields.videoCapsContext);
		return p;
		}

		// Utils

		static jobject convertToJavaIntRange(JNIEnv *env, const Range<int32_t>& range) {
		jclass helperClazz = env->FindClass("android/media/MediaCodecInfo$GenericHelper");
		jmethodID constructIntegerRangeID = env->GetStaticMethodID(helperClazz, "constructIntegerRange",
		"(II)Landroid/util/Range;");
		jobject jRange = env->CallStaticObjectMethod(helperClazz, constructIntegerRangeID,
		range.lower(), range.upper());

		return jRange;
		}

		static jobject convertToJavaDoubleRange(JNIEnv *env, const Range<double>& range) {
		jclass helperClazz = env->FindClass("android/media/MediaCodecInfo$GenericHelper");
		jmethodID constructDoubleRangeID = env->GetStaticMethodID(helperClazz, "constructDoubleRange",
		"(DD)Landroid/util/Range;");
		jobject jRange = env->CallStaticObjectMethod(helperClazz, constructDoubleRangeID,
		range.lower(), range.upper());
		return jRange;
		}

		// Converters between Java objects and native instances

		static VideoCapabilities::PerformancePoint convertToNativePerformancePoint(
		@@ -158,6 +186,125 @@ static jboolean android_media_VideoCapabilities_PerformancePoint_equals(JNIEnv *
		return res;
		}

		// VideoCapabilities

		static void android_media_VideoCapabilities_native_init(JNIEnv env, jobject / thiz */) {
		jclass clazz
		= env->FindClass("android/media/MediaCodecInfo$VideoCapabilities$VideoCapsNativeImpl");
		if (clazz == NULL) {
		return;
		}

		fields.videoCapsContext = env->GetFieldID(clazz, "mNativeContext", "J");
		if (fields.videoCapsContext == NULL) {
		return;
		}

		env->DeleteLocalRef(clazz);
		}

		static jboolean android_media_VideoCapabilities_areSizeAndRateSupported(JNIEnv *env, jobject thiz,
		int32_t width, int32_t height, double frameRate) {
		VideoCapabilities* const videoCaps = getVideoCapabilities(env, thiz);
		if (videoCaps == nullptr) {
		jniThrowException(env, "java/lang/IllegalStateException", NULL);
		return 0;
		}

		bool res = videoCaps->areSizeAndRateSupported(width, height, frameRate);
		return res;
		}

		static jboolean android_media_VideoCapabilities_isSizeSupported(JNIEnv *env, jobject thiz,
		int32_t width, int32_t height) {
		VideoCapabilities* const videoCaps = getVideoCapabilities(env, thiz);
		if (videoCaps == nullptr) {
		jniThrowException(env, "java/lang/IllegalStateException", NULL);
		return 0;
		}

		bool res = videoCaps->isSizeSupported(width, height);
		return res;
		}

		static jobject android_media_VideoCapabilities_getAchievableFrameRatesFor(JNIEnv *env, jobject thiz,
		int32_t width, int32_t height) {
		VideoCapabilities* const videoCaps = getVideoCapabilities(env, thiz);
		if (videoCaps == nullptr) {
		jniThrowException(env, "java/lang/IllegalStateException", NULL);
		return NULL;
		}

		std::optional<Range<double>> frameRates = videoCaps->getAchievableFrameRatesFor(width, height);
		if (!frameRates) {
		return NULL;
		}
		jobject jFrameRates = convertToJavaDoubleRange(env, frameRates.value());
		return jFrameRates;
		}

		static jobject android_media_VideoCapabilities_getSupportedFrameRatesFor(JNIEnv *env, jobject thiz,
		int32_t width, int32_t height) {
		VideoCapabilities* const videoCaps = getVideoCapabilities(env, thiz);
		if (videoCaps == nullptr) {
		jniThrowException(env, "java/lang/IllegalStateException", NULL);
		return NULL;
		}

		std::optional<Range<double>> frameRates = videoCaps->getSupportedFrameRatesFor(width, height);
		if (!frameRates) {
		return NULL;
		}
		jobject jFrameRates = convertToJavaDoubleRange(env, frameRates.value());
		return jFrameRates;
		}

		static jobject android_media_VideoCapabilities_getSupportedWidthsFor(JNIEnv *env, jobject thiz,
		int32_t height) {
		VideoCapabilities* const videoCaps = getVideoCapabilities(env, thiz);
		if (videoCaps == nullptr) {
		jniThrowException(env, "java/lang/IllegalStateException", NULL);
		return NULL;
		}

		std::optional<Range<int32_t>> supportedWidths = videoCaps->getSupportedWidthsFor(height);
		if (!supportedWidths) {
		return NULL;
		}
		jobject jSupportedWidths = convertToJavaIntRange(env, supportedWidths.value());

		return jSupportedWidths;
		}

		static jobject android_media_VideoCapabilities_getSupportedHeightsFor(JNIEnv *env, jobject thiz,
		int32_t width) {
		VideoCapabilities* const videoCaps = getVideoCapabilities(env, thiz);
		if (videoCaps == nullptr) {
		jniThrowException(env, "java/lang/IllegalStateException", NULL);
		return NULL;
		}

		std::optional<Range<int32_t>> supportedHeights = videoCaps->getSupportedHeightsFor(width);
		if (!supportedHeights) {
		return NULL;
		}
		jobject jSupportedHeights = convertToJavaIntRange(env, supportedHeights.value());

		return jSupportedHeights;
		}

		static jint android_media_VideoCapabilities_getSmallerDimensionUpperLimit(JNIEnv *env,
		jobject thiz) {
		VideoCapabilities* const videoCaps = getVideoCapabilities(env, thiz);
		if (videoCaps == nullptr) {
		jniThrowException(env, "java/lang/IllegalStateException", NULL);
		return 0;
		}

		int smallerDimensionUpperLimit = videoCaps->getSmallerDimensionUpperLimit();
		return smallerDimensionUpperLimit;
		}

		// ----------------------------------------------------------------------------

		static const JNINativeMethod gAudioCapsMethods[] = {
		@@ -172,6 +319,17 @@ static const JNINativeMethod gPerformancePointMethods[] = {
		{"native_equals", "(Landroid/media/MediaCodecInfo$VideoCapabilities$PerformancePoint;)Z", (void *)android_media_VideoCapabilities_PerformancePoint_equals},
		};

		static const JNINativeMethod gVideoCapsMethods[] = {
		{"native_init", "()V", (void *)android_media_VideoCapabilities_native_init},
		{"native_areSizeAndRateSupported", "(IID)Z", (void *)android_media_VideoCapabilities_areSizeAndRateSupported},
		{"native_isSizeSupported", "(II)Z", (void *)android_media_VideoCapabilities_isSizeSupported},
		{"native_getAchievableFrameRatesFor", "(II)Landroid/util/Range;", (void *)android_media_VideoCapabilities_getAchievableFrameRatesFor},
		{"native_getSupportedFrameRatesFor", "(II)Landroid/util/Range;", (void *)android_media_VideoCapabilities_getSupportedFrameRatesFor},
		{"native_getSupportedWidthsFor", "(I)Landroid/util/Range;", (void *)android_media_VideoCapabilities_getSupportedWidthsFor},
		{"native_getSupportedHeightsFor", "(I)Landroid/util/Range;", (void *)android_media_VideoCapabilities_getSupportedHeightsFor},
		{"native_getSmallerDimensionUpperLimit", "()I", (void *)android_media_VideoCapabilities_getSmallerDimensionUpperLimit}
		};

		int register_android_media_CodecCapabilities(JNIEnv *env) {
		int result = AndroidRuntime::registerNativeMethods(env,
		"android/media/MediaCodecInfo$AudioCapabilities$AudioCapsNativeImpl",
		@@ -187,5 +345,12 @@ int register_android_media_CodecCapabilities(JNIEnv *env) {
		return result;
		}

		result = AndroidRuntime::registerNativeMethods(env,
		"android/media/MediaCodecInfo$VideoCapabilities$VideoCapsNativeImpl",
		gVideoCapsMethods, NELEM(gVideoCapsMethods));
		if (result != JNI_OK) {
		return result;
		}

		return result;
		}
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