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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 00:47:55 +0000 |
commit | 26a029d407be480d791972afb5975cf62c9360a6 (patch) | |
tree | f435a8308119effd964b339f76abb83a57c29483 /mozglue/android/SharedMemNatives.cpp | |
parent | Initial commit. (diff) | |
download | firefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz firefox-26a029d407be480d791972afb5975cf62c9360a6.zip |
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | mozglue/android/SharedMemNatives.cpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/mozglue/android/SharedMemNatives.cpp b/mozglue/android/SharedMemNatives.cpp new file mode 100644 index 0000000000..f38a2274b3 --- /dev/null +++ b/mozglue/android/SharedMemNatives.cpp @@ -0,0 +1,80 @@ +/* -*- Mode: c++; c-basic-offset: 2; tab-width: 20; indent-tabs-mode: nil; -*- + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include <errno.h> +#include <jni.h> +#include <stdio.h> +#include <string.h> +#include <sys/mman.h> + +#include "mozilla/Sprintf.h" + +extern "C" { + +JNIEXPORT +void JNICALL +Java_org_mozilla_gecko_media_SampleBuffer_nativeReadFromDirectBuffer( + JNIEnv* jenv, jclass, jobject src, jlong dest, jint offset, jint size) { + uint8_t* from = static_cast<uint8_t*>(jenv->GetDirectBufferAddress(src)); + if (from == nullptr) { + jenv->ThrowNew(jenv->FindClass("java/lang/NullPointerException"), + "Null direct buffer"); + return; + } + + void* to = reinterpret_cast<void*>(dest); + if (to == nullptr) { + jenv->ThrowNew(jenv->FindClass("java/lang/NullPointerException"), + "Null shared memory buffer"); + return; + } + + memcpy(to, from + offset, size); +} + +JNIEXPORT +void JNICALL +Java_org_mozilla_gecko_media_SampleBuffer_nativeWriteToDirectBuffer( + JNIEnv* jenv, jclass, jlong src, jobject dest, jint offset, jint size) { + uint8_t* from = reinterpret_cast<uint8_t*>(src); + if (from == nullptr) { + jenv->ThrowNew(jenv->FindClass("java/lang/NullPointerException"), + "Null shared memory buffer"); + return; + } + + void* to = jenv->GetDirectBufferAddress(dest); + if (to == nullptr) { + jenv->ThrowNew(jenv->FindClass("java/lang/NullPointerException"), + "Null direct buffer"); + return; + } + + memcpy(to, from + offset, size); +} + +JNIEXPORT +jlong JNICALL Java_org_mozilla_gecko_mozglue_SharedMemory_map(JNIEnv* env, + jobject jobj, + jint fd, + jint length) { + void* address = mmap(NULL, length, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0); + if (address == MAP_FAILED) { + char msg[128]; + SprintfLiteral(msg, "mmap failed. errno=%d", errno); + env->ThrowNew(env->FindClass("java/lang/NullPointerException"), msg); + return 0; + } + return jlong(address); +} + +JNIEXPORT +void JNICALL Java_org_mozilla_gecko_mozglue_SharedMemory_unmap(JNIEnv* env, + jobject jobj, + jlong address, + jint size) { + munmap((void*)address, (size_t)size); +} +} |