1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
|
/*
* libjingle
* Copyright 2015 Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef TALK_APP_WEBRTC_JAVA_JNI_SURFACETEXTUREHELPER_JNI_H_
#define TALK_APP_WEBRTC_JAVA_JNI_SURFACETEXTUREHELPER_JNI_H_
#include <jni.h>
#include "talk/app/webrtc/java/jni/jni_helpers.h"
#include "talk/app/webrtc/java/jni/native_handle_impl.h"
#include "webrtc/base/refcount.h"
#include "webrtc/base/scoped_ref_ptr.h"
#include "webrtc/common_video/interface/video_frame_buffer.h"
namespace webrtc_jni {
// Helper class to create and synchronize access to an Android SurfaceTexture.
// It is used for creating webrtc::VideoFrameBuffers from a SurfaceTexture when
// the SurfaceTexture has been updated.
// When the VideoFrameBuffer is released, this class returns the buffer to the
// java SurfaceTextureHelper so it can be updated safely. The VideoFrameBuffer
// can be released on an arbitrary thread.
// SurfaceTextureHelper is reference counted to make sure that it is not
// destroyed while a VideoFrameBuffer is in use.
// This class is the C++ counterpart of the java class SurfaceTextureHelper.
// Usage:
// 1. Create an instance of this class.
// 2. Call GetJavaSurfaceTextureHelper to get the Java SurfaceTextureHelper.
// 3. Register a listener to the Java SurfaceListener and start producing
// new buffers.
// 3. Call CreateTextureFrame to wrap the Java texture in a VideoFrameBuffer.
class SurfaceTextureHelper : public rtc::RefCountInterface {
public:
SurfaceTextureHelper(JNIEnv* jni, jobject shared_egl_context);
// Returns the Java SurfaceTextureHelper.
jobject GetJavaSurfaceTextureHelper() const {
return *j_surface_texture_helper_;
}
rtc::scoped_refptr<webrtc::VideoFrameBuffer> CreateTextureFrame(
int width,
int height,
const NativeTextureHandleImpl& native_handle);
protected:
~SurfaceTextureHelper();
private:
// May be called on arbitrary thread.
void ReturnTextureFrame() const;
const ScopedGlobalRef<jclass> j_surface_texture_helper_class_;
const ScopedGlobalRef<jobject> j_surface_texture_helper_;
const jmethodID j_return_texture_method_;
};
} // namespace webrtc_jni
#endif // TALK_APP_WEBRTC_JAVA_JNI_SURFACETEXTUREHELPER_JNI_H_
|
