* Add videoCodec, videoBitrate, audioCodec, and audioBitrate…

… properties to `FrameGrabber` * Work around `avcodec` and `avdevice` not loading properly for `FFmpegFrameGrabber` and `FFmpegFrameRecorder` (issue bytedeco#24) * Do key frame detection in `FFmpegFrameRecorder` based on `AVPacket`, not `AVPicture` (pull bytedeco#20)
funzhang · Aug 26, 2014 · b5eacba · b5eacba
1 parent 57a23c5
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,4 +1,8 @@
 
+ * Add `videoCodec`, `videoBitrate`, `audioCodec`, and `audioBitrate` properties to `FrameGrabber`
+ * Work around `avcodec` and `avdevice` not loading properly for `FFmpegFrameGrabber` and `FFmpegFrameRecorder` ([issue #24](https://github.com/bytedeco/javacv/issues/24))
+ * Do key frame detection in `FFmpegFrameRecorder` based on `AVPacket`, not `AVPicture` ([pull #20](https://github.com/bytedeco/javacv/pull/20))
+
 ### July 27, 2014 version 0.9
  * Remove `platform` property from `pom.xml`, replaced with the `platform.dependency` one in JavaCPP Presets ([issue #10](https://github.com/bytedeco/javacv/issues/10))
  * Add new `RLSA` sample, thanks to Nicholas Woodward ([issue #469](http://code.google.com/p/javacv/issues/detail?id=469))

diff --git a/pom.xml b/pom.xml
@@ -4,7 +4,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.bytedeco</groupId>
   <artifactId>javacv</artifactId>
-  <version>0.9</version>
+  <version>0.9.1-SNAPSHOT</version>
   <packaging>jar</packaging>
 
   <name>JavaCV</name>
@@ -48,7 +48,7 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <maven.build.timestamp.format>yyyyMMddhhmm</maven.build.timestamp.format>
-    <javacpp.version>${project.version}</javacpp.version>
+    <javacpp.version>0.9</javacpp.version>
     <!-- Reinclude the following with profiles, either all: -Pall
          or selectively: -Pmarkers,ffmpeg,dc1394,flycapture,openkinect,ps3eye,videoinput,jogamp -->
     <exclude.markers>**/Mark*.java</exclude.markers>

diff --git a/src/main/java/org/bytedeco/javacv/FFmpegFrameGrabber.java b/src/main/java/org/bytedeco/javacv/FFmpegFrameGrabber.java
@@ -84,10 +84,18 @@ public static void tryLoad() throws Exception {
         } else {
             try {
                 Loader.load(org.bytedeco.javacpp.avutil.class);
+                Loader.load(org.bytedeco.javacpp.swresample.class);
                 Loader.load(org.bytedeco.javacpp.avcodec.class);
                 Loader.load(org.bytedeco.javacpp.avformat.class);
-                Loader.load(org.bytedeco.javacpp.avdevice.class);
                 Loader.load(org.bytedeco.javacpp.swscale.class);
+
+                // Register all formats and codecs
+                avcodec_register_all();
+                av_register_all();
+                avformat_network_init();
+
+                Loader.load(org.bytedeco.javacpp.avdevice.class);
+                avdevice_register_all();
             } catch (Throwable t) {
                 if (t instanceof Exception) {
                     throw loadingException = (Exception)t;
@@ -99,11 +107,9 @@ public static void tryLoad() throws Exception {
     }
 
     static {
-        // Register all formats and codecs
-        avcodec_register_all();
-        avdevice_register_all();
-        av_register_all();
-        avformat_network_init();
+        try {
+            tryLoad();
+        } catch (Exception ex) { }
     }
 
     public FFmpegFrameGrabber(File file) {
@@ -242,6 +248,14 @@ public void releaseUnsafe() throws Exception {
         }
     }
 
+    @Override public int getVideoCodec() {
+        return video_c == null ? super.getVideoCodec() : video_c.codec_id();
+    }
+
+    @Override public int getVideoBitrate() {
+        return video_c == null ? super.getVideoBitrate() : video_c.bit_rate();
+    }
+
     @Override public double getFrameRate() {
         if (video_st == null) {
             return super.getFrameRate();
@@ -251,6 +265,14 @@ public void releaseUnsafe() throws Exception {
         }
     }
 
+    @Override public int getAudioCodec() {
+        return audio_c == null ? super.getAudioCodec() : audio_c.codec_id();
+    }
+
+    @Override public int getAudioBitrate() {
+        return audio_c == null ? super.getAudioBitrate() : audio_c.bit_rate();
+    }
+
     @Override public int getSampleFormat() {
         return audio_c == null ? super.getSampleFormat() : audio_c.sample_fmt();
     }

diff --git a/src/main/java/org/bytedeco/javacv/FFmpegFrameRecorder.java b/src/main/java/org/bytedeco/javacv/FFmpegFrameRecorder.java
@@ -88,9 +88,14 @@ public static void tryLoad() throws Exception {
         } else {
             try {
                 Loader.load(org.bytedeco.javacpp.avutil.class);
+                Loader.load(org.bytedeco.javacpp.swresample.class);
                 Loader.load(org.bytedeco.javacpp.avcodec.class);
                 Loader.load(org.bytedeco.javacpp.avformat.class);
                 Loader.load(org.bytedeco.javacpp.swscale.class);
+
+                /* initialize libavcodec, and register all codecs and formats */
+                av_register_all();
+                avformat_network_init();
             } catch (Throwable t) {
                 if (t instanceof Exception) {
                     throw loadingException = (Exception)t;
@@ -102,9 +107,9 @@ public static void tryLoad() throws Exception {
     }
 
     static {
-        /* initialize libavcodec, and register all codecs and formats */
-        av_register_all();
-        avformat_network_init();
+        try {
+            tryLoad();
+        } catch (Exception ex) { }
     }
 
     public FFmpegFrameRecorder(File file, int audioChannels) {

diff --git a/src/main/java/org/bytedeco/javacv/FrameGrabber.java b/src/main/java/org/bytedeco/javacv/FrameGrabber.java
@@ -41,7 +41,7 @@
 public abstract class FrameGrabber {
 
     public static final List<String> list = new LinkedList<String>(Arrays.asList(new String[] {
-            "DC1394", "FlyCapture", "OpenKinect", "PS3Eye", "VideoInput", "OpenCV", "FFmpeg" }));
+            "DC1394", "FlyCapture", "OpenKinect", "PS3Eye", "VideoInput", "OpenCV", "FFmpeg", "IPCamera" }));
     public static void init() {
         for (String name : list) {
             try {
@@ -169,9 +169,9 @@ public static enum ImageMode {
     protected int imageWidth = 0, imageHeight = 0, audioChannels = 0;
     protected ImageMode imageMode = ImageMode.COLOR;
     protected long sensorPattern = -1L;
-    protected int pixelFormat = -1;
+    protected int pixelFormat = -1, videoCodec, videoBitrate = 0;
     protected double frameRate = 0;
-    protected int sampleFormat = 0, sampleRate = 0;
+    protected int sampleFormat = 0, audioCodec, audioBitrate = 0, sampleRate = 0;
     protected boolean triggerMode = false;
     protected int bpp = 0;
     protected int timeout = 10000;
@@ -230,13 +230,41 @@ public void setPixelFormat(int pixelFormat) {
         this.pixelFormat = pixelFormat;
     }
 
+    public int getVideoCodec() {
+        return videoCodec;
+    }
+    public void setVideoCodec(int videoCodec) {
+        this.videoCodec = videoCodec;
+    }
+
+    public int getVideoBitrate() {
+        return videoBitrate;
+    }
+    public void setVideoBitrate(int videoBitrate) {
+        this.videoBitrate = videoBitrate;
+    }
+
     public double getFrameRate() {
         return frameRate;
     }
     public void setFrameRate(double frameRate) {
         this.frameRate = frameRate;
     }
 
+    public int getAudioCodec() {
+        return audioCodec;
+    }
+    public void setAudioCodec(int audioCodec) {
+        this.audioCodec = audioCodec;
+    }
+
+    public int getAudioBitrate() {
+        return audioBitrate;
+    }
+    public void setAudioBitrate(int audioBitrate) {
+        this.audioBitrate = audioBitrate;
+    }
+
     public int getSampleFormat() {
         return sampleFormat;
     }

diff --git a/src/main/java/org/bytedeco/javacv/IPCameraFrameGrabber.java b/src/main/java/org/bytedeco/javacv/IPCameraFrameGrabber.java
@@ -30,9 +30,9 @@
 import java.net.URLConnection;
 import java.util.List;
 import java.util.Map;
-import org.bytedeco.javacpp.BytePointer;
-
 import javax.imageio.ImageIO;
+import org.bytedeco.javacpp.BytePointer;
+import org.bytedeco.javacpp.Loader;
 
 import static org.bytedeco.javacpp.opencv_core.*;
 import static org.bytedeco.javacpp.opencv_highgui.*;
@@ -46,6 +46,19 @@ public class IPCameraFrameGrabber extends FrameGrabber {
      * cam http://192.168.0.57:8080/videofeed
      */
 
+    private static Exception loadingException = null;
+    public static void tryLoad() throws Exception {
+        if (loadingException != null) {
+            throw loadingException;
+        } else {
+            try {
+                Loader.load(org.bytedeco.javacpp.opencv_highgui.class);
+            } catch (Throwable t) {
+                throw loadingException = new Exception("Failed to load " + IPCameraFrameGrabber.class, t);
+            }
+        }
+    }
+
     private URL url;
     private URLConnection connection;
     private InputStream input;