From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- media/libcubeb/src/cubeb-jni.cpp | 82 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 82 insertions(+) create mode 100644 media/libcubeb/src/cubeb-jni.cpp (limited to 'media/libcubeb/src/cubeb-jni.cpp') diff --git a/media/libcubeb/src/cubeb-jni.cpp b/media/libcubeb/src/cubeb-jni.cpp new file mode 100644 index 0000000000..8e7345b8aa --- /dev/null +++ b/media/libcubeb/src/cubeb-jni.cpp @@ -0,0 +1,82 @@ +/* clang-format off */ +#include "jni.h" +#include +#include "cubeb-jni-instances.h" +/* clang-format on */ + +#define AUDIO_STREAM_TYPE_MUSIC 3 + +struct cubeb_jni { + jobject s_audio_manager_obj = nullptr; + jclass s_audio_manager_class = nullptr; + jmethodID s_get_output_latency_id = nullptr; +}; + +extern "C" cubeb_jni * +cubeb_jni_init() +{ + jobject ctx_obj = cubeb_jni_get_context_instance(); + JNIEnv * jni_env = cubeb_get_jni_env_for_thread(); + if (!jni_env || !ctx_obj) { + return nullptr; + } + + cubeb_jni * cubeb_jni_ptr = new cubeb_jni; + assert(cubeb_jni_ptr); + + // Find the audio manager object and make it global to call it from another + // method + jclass context_class = jni_env->FindClass("android/content/Context"); + jfieldID audio_service_field = jni_env->GetStaticFieldID( + context_class, "AUDIO_SERVICE", "Ljava/lang/String;"); + jstring jstr = (jstring)jni_env->GetStaticObjectField(context_class, + audio_service_field); + jmethodID get_system_service_id = + jni_env->GetMethodID(context_class, "getSystemService", + "(Ljava/lang/String;)Ljava/lang/Object;"); + jobject audio_manager_obj = + jni_env->CallObjectMethod(ctx_obj, get_system_service_id, jstr); + cubeb_jni_ptr->s_audio_manager_obj = + reinterpret_cast(jni_env->NewGlobalRef(audio_manager_obj)); + + // Make the audio manager class a global reference in order to preserve method + // id + jclass audio_manager_class = jni_env->FindClass("android/media/AudioManager"); + cubeb_jni_ptr->s_audio_manager_class = + reinterpret_cast(jni_env->NewGlobalRef(audio_manager_class)); + cubeb_jni_ptr->s_get_output_latency_id = + jni_env->GetMethodID(audio_manager_class, "getOutputLatency", "(I)I"); + + jni_env->DeleteLocalRef(ctx_obj); + jni_env->DeleteLocalRef(context_class); + jni_env->DeleteLocalRef(jstr); + jni_env->DeleteLocalRef(audio_manager_obj); + jni_env->DeleteLocalRef(audio_manager_class); + + return cubeb_jni_ptr; +} + +extern "C" int +cubeb_get_output_latency_from_jni(cubeb_jni * cubeb_jni_ptr) +{ + assert(cubeb_jni_ptr); + JNIEnv * jni_env = cubeb_get_jni_env_for_thread(); + return jni_env->CallIntMethod( + cubeb_jni_ptr->s_audio_manager_obj, + cubeb_jni_ptr->s_get_output_latency_id, + AUDIO_STREAM_TYPE_MUSIC); // param: AudioManager.STREAM_MUSIC +} + +extern "C" void +cubeb_jni_destroy(cubeb_jni * cubeb_jni_ptr) +{ + assert(cubeb_jni_ptr); + + JNIEnv * jni_env = cubeb_get_jni_env_for_thread(); + assert(jni_env); + + jni_env->DeleteGlobalRef(cubeb_jni_ptr->s_audio_manager_obj); + jni_env->DeleteGlobalRef(cubeb_jni_ptr->s_audio_manager_class); + + delete cubeb_jni_ptr; +} -- cgit v1.2.3