增加佳明相机业务

2023-04-19 15:41:33 +08:00
parent fdb62780ee
commit 3876ab9f38
142 changed files with 8433 additions and 67 deletions
--- a/collect-library/src/main/java/org/videolan/libvlc/Aout.java
+++ b/collect-library/src/main/java/org/videolan/libvlc/Aout.java
@@ -0,0 +1,74 @@
+/*****************************************************************************
+ * Aout.java
+ *****************************************************************************
+ * Copyright © 2011-2012 VLC authors and VideoLAN
+ *
+ * This program 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.
+ *
+ * This program 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 this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+package org.videolan.libvlc;
+
+import android.media.AudioFormat;
+import android.media.AudioManager;
+import android.media.AudioTrack;
+import android.util.Log;
+
+public class Aout {
+    /**
+     * Java side of the audio output module for Android.
+     * Uses an AudioTrack to play decoded audio buffers.
+     *
+     * TODO Use MODE_STATIC instead of MODE_STREAM with a MemoryFile (ashmem)
+     */
+
+    public Aout() {
+    }
+
+    private AudioTrack mAudioTrack;
+    private static final String TAG = "LibVLC/aout";
+
+    public void init(int sampleRateInHz, int channels, int samples) {
+        Log.d(TAG, sampleRateInHz + ", " + channels + ", " + samples + "=>" + channels * samples);
+        int minBufferSize = AudioTrack.getMinBufferSize(sampleRateInHz,
+                                                        AudioFormat.CHANNEL_OUT_STEREO,
+                                                        AudioFormat.ENCODING_PCM_16BIT);
+        mAudioTrack = new AudioTrack(AudioManager.STREAM_MUSIC,
+                                     sampleRateInHz,
+                                     AudioFormat.CHANNEL_OUT_STEREO,
+                                     AudioFormat.ENCODING_PCM_16BIT,
+                                     Math.max(minBufferSize, channels * samples * 2),
+                                     AudioTrack.MODE_STREAM);
+    }
+
+    public void release() {
+        if (mAudioTrack != null) {
+            mAudioTrack.release();
+        }
+        mAudioTrack = null;
+    }
+
+    public void playBuffer(byte[] audioData, int bufferSize) {
+        if (mAudioTrack.getState() == AudioTrack.STATE_UNINITIALIZED)
+            return;
+        if (mAudioTrack.write(audioData, 0, bufferSize) != bufferSize) {
+            Log.w(TAG, "Could not write all the samples to the audio device");
+        }
+        mAudioTrack.play();
+    }
+
+    public void pause() {
+        mAudioTrack.pause();
+    }
+}