mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-28 20:53:54 +02:00
376d8fb2c5
If a JNI environment is not already attached to the thread where the
MediaCodec calls are made the current implementation will attach /
detach an environment for each MediaCodec call wasting some CPU time.
ff_jni_get_env replaces ff_jni_{attach,detach} by permanently attaching
an environment (if it is not already the case) to the current thread.
The environment will be automatically detached at the thread destruction
using a pthread_key callback.
Saves around 5% of CPU time (out of 20%) while decoding a stream with
MediaCodec.
57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
/*
|
|
* Android MediaCodec Surface functions
|
|
*
|
|
* Copyright (c) 2016 Matthieu Bouron <matthieu.bouron stupeflix.com>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include <jni.h>
|
|
|
|
#include "ffjni.h"
|
|
#include "mediacodec_surface.h"
|
|
|
|
void *ff_mediacodec_surface_ref(void *surface, void *log_ctx)
|
|
{
|
|
JNIEnv *env = NULL;
|
|
|
|
void *reference = NULL;
|
|
|
|
env = ff_jni_get_env(log_ctx);
|
|
if (!env) {
|
|
return NULL;
|
|
}
|
|
|
|
reference = (*env)->NewGlobalRef(env, surface);
|
|
|
|
return reference;
|
|
}
|
|
|
|
int ff_mediacodec_surface_unref(void *surface, void *log_ctx)
|
|
{
|
|
JNIEnv *env = NULL;
|
|
|
|
env = ff_jni_get_env(log_ctx);
|
|
if (!env) {
|
|
return AVERROR_EXTERNAL;
|
|
}
|
|
|
|
(*env)->DeleteGlobalRef(env, surface);
|
|
|
|
return 0;
|
|
}
|