I found there is a mismatch of define constant in these 2 files for
the source input: AudioRecord.h and MediaRecorder.java
In native code (AudioRecord.h), the values are...
44 enum input_source {
45 DEFAULT_INPUT =-1,
46 MIC_INPUT = 0,
47 VOICE_UPLINK_INPUT = 1,
48 VOICE_DOWNLINK_INPUT = 2,
49 VOICE_CALL_INPUT = 3,
50 NUM_INPUT_SOURCES
51 };
http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=include/media/AudioRecord.h;h=13e51eea1eb478517f677df0642b4d2221571192;hb=donut#l38
In Java MediaRecorder AudioSource, the values are...
120 public final class AudioSource {
121 /* Do not change these values without updating their
counterparts
122 * in include/media/mediarecorder.h!
123 */
124 private AudioSource() {}
125 public static final int DEFAULT = 0;
126 /** Microphone audio source */
127 public static final int MIC = 1;
128
129 /** Voice call uplink (Tx) audio source */
130 public static final int VOICE_UPLINK = 2;
131
132 /** Voice call downlink (Rx) audio source */
133 public static final int VOICE_DOWNLINK = 3;
134
135 /** Voice call uplink + downlink audio source */
136 public static final int VOICE_CALL = 4;
137 }
http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=media/java/android/media/MediaRecorder.java;h=be4b489eb08683750fc2149184ab073e8528e6d4;hb=donut#l120
I found a similar thread with this issue too:
http://groups.google.com.tw/group/android-developers/browse_thread/thread/01b53ce66b43810c/a578913b17a6bcca?#a578913b17a6bcca
I need to refer to the define AudioRecord::MIC_INPUT at the source
AudioHardwareALSA.cpp to determine which is the input source and set
the audio route accordingly for MIC recording, but this will cause a
wrong route because of this mismatch of constant define at the 2
source files.
Is it a bug by the Google?
Thanks
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