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Android: Annotate and generate JNI code for VideoFrame.java

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This CL also merged native_handle_impl.cc and videoframe_jni.cc to keep
all JNI code for the same Java class in the same file, and also renames
this file to jni/videoframe.cc.

The classes AndroidVideoBufferFactory and JavaVideoFrameFactory are
now unnecessary since we cache everything and can be simplified to
global static functions instead.

Bug: webrtc:8278
Change-Id: I03d7b0bbde64cfb407cd6210478ddf9d5599cd8c
Reviewed-on: https://webrtc-review.googlesource.com/22923
Commit-Queue: Magnus Jedvert <magjed@webrtc.org>
Reviewed-by: Sami Kalliomäki <sakal@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20677}
This commit is contained in:
Magnus Jedvert
2017-11-14 17:08:59 +01:00
committed by Commit Bot
parent 651707bdf0
commit c2ac3c663f
17 changed files with 170 additions and 349 deletions
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35
sdk/android/api/org/webrtc/VideoFrame.java
View File

@ -30,22 +30,22 @@ public class VideoFrame {
/**
* Resolution of the buffer in pixels.
*/
int getWidth();
int getHeight();
@CalledByNative("Buffer") int getWidth();
@CalledByNative("Buffer") int getHeight();
/**
* Returns a memory-backed frame in I420 format. If the pixel data is in another format, a
* conversion will take place. All implementations must provide a fallback to I420 for
* compatibility with e.g. the internal WebRTC software encoders.
*/
I420Buffer toI420();
@CalledByNative("Buffer") I420Buffer toI420();
/**
* Reference counting is needed since a video buffer can be shared between multiple VideoSinks,
* and the buffer needs to be returned to the VideoSource as soon as all references are gone.
*/
void retain();
void release();
@CalledByNative("Buffer") void retain();
@CalledByNative("Buffer") void release();
/**
* Crops a region defined by |cropx|, |cropY|, |cropWidth| and |cropHeight|. Scales it to size
@ -65,25 +65,25 @@ public class VideoFrame {
* be 0. Callers may mutate the ByteBuffer (eg. through relative-read operations), so
* implementations must return a new ByteBuffer or slice for each call.
*/
ByteBuffer getDataY();
@CalledByNative("I420Buffer") ByteBuffer getDataY();
/**
* Returns a direct ByteBuffer containing U-plane data. The buffer capacity is at least
* getStrideU() * ((getHeight() + 1) / 2) bytes. The position of the returned buffer is ignored
* and must be 0. Callers may mutate the ByteBuffer (eg. through relative-read operations), so
* implementations must return a new ByteBuffer or slice for each call.
*/
ByteBuffer getDataU();
@CalledByNative("I420Buffer") ByteBuffer getDataU();
/**
* Returns a direct ByteBuffer containing V-plane data. The buffer capacity is at least
* getStrideV() * ((getHeight() + 1) / 2) bytes. The position of the returned buffer is ignored
* and must be 0. Callers may mutate the ByteBuffer (eg. through relative-read operations), so
* implementations must return a new ByteBuffer or slice for each call.
*/
ByteBuffer getDataV();
@CalledByNative("I420Buffer") ByteBuffer getDataV();
int getStrideY();
int getStrideU();
int getStrideV();
@CalledByNative("I420Buffer") int getStrideY();
@CalledByNative("I420Buffer") int getStrideU();
@CalledByNative("I420Buffer") int getStrideV();
}
/**
@ -132,6 +132,7 @@ public class VideoFrame {
this.timestampNs = timestampNs;
}
@CalledByNative
public Buffer getBuffer() {
return buffer;
}
@ -139,6 +140,7 @@ public class VideoFrame {
/**
* Rotation of the frame in degrees.
*/
@CalledByNative
public int getRotation() {
return rotation;
}
@ -146,6 +148,7 @@ public class VideoFrame {
/**
* Timestamp of the frame in nano seconds.
*/
@CalledByNative
public long getTimestampNs() {
return timestampNs;
}
@ -194,7 +197,7 @@ public class VideoFrame {
}
JavaI420Buffer newBuffer = JavaI420Buffer.allocate(scaleWidth, scaleHeight);
nativeCropAndScaleI420(buffer.getDataY(), buffer.getStrideY(), buffer.getDataU(),
cropAndScaleI420Native(buffer.getDataY(), buffer.getStrideY(), buffer.getDataU(),
buffer.getStrideU(), buffer.getDataV(), buffer.getStrideV(), cropX, cropY, cropWidth,
cropHeight, newBuffer.getDataY(), newBuffer.getStrideY(), newBuffer.getDataU(),
newBuffer.getStrideU(), newBuffer.getDataV(), newBuffer.getStrideV(), scaleWidth,
@ -202,7 +205,13 @@ public class VideoFrame {
return newBuffer;
}
private static native void nativeCropAndScaleI420(ByteBuffer srcY, int srcStrideY,
// TODO(bugs.webrtc.org/8278): Add a way to generate JNI code for constructors directly.
@CalledByNative
static VideoFrame create(Buffer buffer, int rotation, long timestampNs) {
return new VideoFrame(buffer, rotation, timestampNs);
}
private static native void cropAndScaleI420Native(ByteBuffer srcY, int srcStrideY,
ByteBuffer srcU, int srcStrideU, ByteBuffer srcV, int srcStrideV, int cropX, int cropY,
int cropWidth, int cropHeight, ByteBuffer dstY, int dstStrideY, ByteBuffer dstU,
int dstStrideU, ByteBuffer dstV, int dstStrideV, int scaleWidth, int scaleHeight);