Nevermind! I found the solution shortly after: it turns out there was a discrepancy between the libasound.so.2.0.0 on the system and the one in my buildroot. For some reason snd_pcm_hw_params_get_channels_min in src/java.desktop/linux/native/libjsound/PLATFORM_API_LinuxOS_ALSA_PCM.c at 156 would always return an error. After copying over the buildroot libasound.so.2.0.0, everything worked just fine.
On Fri, Oct 22, 2021 at 9:37 AM John Cummings <darkza...@gmail.com> wrote: > Hello all, > I have been attempting to build OpenJDK-11 for an ARMv7-A system using > Cortex-A7 that currently runs Java 8. After resolving my build issues with > the build-dev mailing list (who sent me here for this issue), I'm able to > make it run on the system, but it cannot play sound and I have been unable > to figure out why. Running the same java applications one after another, 8 > will play sound, 11 will crash upon trying to get the source line. > > Please let me know if there's any additional information I can provide > that may help! > > I have attempted building with two different toolchains, I've used the > branch at https://hg.openjdk.java.net/jdk/jdk11 as well as the one at > https://github.com/openjdk/jdk11u-dev/. I've tried the server, client, > and zero variants of both, with and without fastdebug enabled, and haven't > made much progress with it. I've also tried with java 8 still on the > system, and with deleting it entirely. I've also attempted to add the > following to the sound.properties: > > javax.sound.sampled.Clip=com.sun.media.sound.DirectAudioDeviceProvider > javax.sound.sampled.Port=com.sun.media.sound.PortMixerProvider > > javax.sound.sampled.SourceDataLine=com.sun.media.sound.DirectAudioDeviceProvider > > javax.sound.sampled.TargetDataLine=com.sun.media.sound.DirectAudioDeviceProvider > > This is the configuration I've been using: > bash configure \ > --openjdk-target=arm-unknown-linux-gnueabihf \ > --with-native-debug-symbols=none \ > --disable-warnings-as-errors \ > --with-abi-profile=arm-vfp-hflt \ > --disable-ccache \ > --with-build-jdk=/opt/openjdk/jdk11u-dev/build/linux-x86_64-normal-server-release/images/jdk > \ > --with-sysroot=/opt/buildroot-2017.08/output/host/arm-buildroot-linux-gnueabihf/sysroot/ > \ > --with-toolchain-path=/opt/x-tools/arm-unknown-linux-gnueabihf/bin \ > --with-x=/opt/buildroot-2017.08/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr > \ > --with-cups=/opt/sbuildroot-2017.08/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr > \ > --with-fontconfig=/opt/buildroot-2017.08/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr > \ > --with-freetype-lib=/opt/buildroot-2017.08/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/lib > \ > --with-freetype-include=/opt/buildroot-2017.08/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr/include > \ > --with-alsa=/opt/buildroot-2017.08/output/host/arm-buildroot-linux-gnueabihf/sysroot/usr > \ > --with-stdc++lib=dynamic \ > --with-extra-cxxflags='-O2 -pipe' \ > --with-extra-cflags='-O2 -pipe' \ > --with-jobs=8 \ > --with-jvm-variants=client > > > Output of uname -a for this system is > Linux sun6i 3.3.0 #125 SMP PREEMPT Fri Feb 5 07:04:03 CST 2021 armv7l > GNU/Linux > > Output of java -version for 8 is > # java8 -version > java version "1.8.0_144" > Java(TM) SE Runtime Environment (build 1.8.0_144-b01) > Java HotSpot(TM) Client VM (build 25.144-b01, mixed mode) > Output for the newly built 11 is: > # java -version > openjdk version "11.0.14-internal" 2022-01-18 > OpenJDK Runtime Environment (build > 11.0.14-internal+0-adhoc.johnc.jdk11u-dev) > OpenJDK Client VM (build 11.0.14-internal+0-adhoc.johnc.jdk11u-dev, mixed > mode) > > The app I've been collecting information with just gets the mixers, and > any data lines and prints their values, and then plays a .wav file using > SourceDataLine, and again with Clip. I use -Daudio.mixer="M1 PCM [default]" > because in the Java 11 build, setting it to null for the default just > returns null, and it doesn't even return the "Found Audio Mixer" line. If > it helps, here is the java itself: https://pastebin.com/CCfUWTTf > > The output is as follows for 8 and 11: > > > > Java 8 output > > > > # java8 -Daudio.mixer="M1 PCM [default]" AudioFormats SuccessBuzzer.wav > Found audio mixer: M1 PCM [default] > Supported Lines of default mixer (M1 PCM [default]): > > > Mixer ClassName: > com.sun.media.sound.DirectAudioDeviceProvider$DirectAudioDeviceInfo > Mixer Desc: Direct Audio Device: sun7i PCM, M1 PCM, sun7i PCM > Vendor: ALSA (http://www.alsa-project.org) > > M1 PCM [default] --- interface SourceDataLine supporting 8 > audio formats, and buffers of at least 32 bytes ----- > com.sun.media.sound.DirectAudioDevice$DirectSDL@873330 > M1 PCM [default] --- interface Clip supporting 8 audio formats, > and buffers of at least 32 bytes ----- > com.sun.media.sound.DirectAudioDevice$DirectClip@19d7047 > com.sun.media.sound.DirectAudioDevice@16ec8df --- interface > TargetDataLine supporting 8 audio formats, and buffers of at least 32 bytes > ----- com.sun.media.sound.DirectAudioDevice$DirectTDL@ec7777 > Mixer Num Source Info Lines: 2 > Mixer Num Target Info Lines: 1 > interface SourceDataLine supporting 8 audio formats, and buffers of at > least 32 bytes > max buffer size: -1 > min buffer size: 32 > Supported Audio formats: > PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, > little-endian > encoding: PCM_SIGNED > channels: 1 > frame size [bytes]: 2 > sample size [bit]: 16 > big endian: false > line supported: true > PCM_SIGNED unknown sample rate, 16 bit, mono, 2 bytes/frame, big-endian > encoding: PCM_SIGNED > channels: 1 > frame size [bytes]: 2 > sample size [bit]: 16 > big endian: true > line supported: true > PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, > little-endian > encoding: PCM_SIGNED > channels: 2 > frame size [bytes]: 4 > sample size [bit]: 16 > big endian: false > line supported: true > PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 bytes/frame, > big-endian > encoding: PCM_SIGNED > channels: 2 > frame size [bytes]: 4 > sample size [bit]: 16 > big endian: true > line supported: true > PCM_SIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, > encoding: PCM_SIGNED > channels: 1 > frame size [bytes]: 1 > sample size [bit]: 8 > big endian: false > line supported: true > PCM_UNSIGNED unknown sample rate, 8 bit, mono, 1 bytes/frame, > encoding: PCM_UNSIGNED > channels: 1 > frame size [bytes]: 1 > sample size [bit]: 8 > big endian: false > line supported: true > PCM_SIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, > encoding: PCM_SIGNED > channels: 2 > frame size [bytes]: 2 > sample size [bit]: 8 > big endian: false > line supported: true > PCM_UNSIGNED unknown sample rate, 8 bit, stereo, 2 bytes/frame, > encoding: PCM_UNSIGNED > channels: 2 > frame size [bytes]: 2 > sample size [bit]: 8 > big endian: false > line supported: true > > > interface Clip supporting 8 audio formats, and buffers of at least 32 bytes > > Playing SuccessBuzzer.wav > Source Data Lines: PCM_SIGNED 22050.0 Hz, 16 bit, stereo, 4 > bytes/frame, little-endian > encoding: PCM_SIGNED > channels: 2 > frame rate [1/s]: 22050.0 > frame size [bytes]: 4 > sample rate [1/s]: 22050.0 > sample size [bit]: 16 > big endian: false > line supported: true > > > > Clip Data Lines: PCM_SIGNED 22050.0 Hz, 16 bit, stereo, 4 bytes/frame, > little-endian > encoding: PCM_SIGNED > channels: 2 > frame rate [1/s]: 22050.0 > frame size [bytes]: 4 > sample rate [1/s]: 22050.0 > sample size [bit]: 16 > big endian: false > line supported: true > > > > Target Data Lines: PCM_SIGNED 22050.0 Hz, 16 bit, stereo, 4 > bytes/frame, little-endian > encoding: PCM_SIGNED > channels: 2 > frame rate [1/s]: 22050.0 > frame size [bytes]: 4 > sample rate [1/s]: 22050.0 > sample size [bit]: 16 > big endian: false > line supported: true > > > > > > > > > Java 11 Output > > > > > > # java -Daudio.mixer="M1 PCM [default]" AudioFormats SuccessBuzzer.wav > Found audio mixer: M1 PCM [default] > Supported Lines of default mixer (M1 PCM [default]): > > > Mixer ClassName: > com.sun.media.sound.DirectAudioDeviceProvider$DirectAudioDeviceInfo > Mixer Desc: Direct Audio Device: sun7i PCM, M1 PCM, sun7i PCM > Vendor: ALSA (http://www.alsa-project.org) > > Mixer Has 0 Source Info Lines: > Mixer Has 0 Target Info Lines: > > > > > > Playing SuccessBuzzer.wav > Source Data Lines: PCM_SIGNED 22050.0 Hz, 16 bit, stereo, 4 > bytes/frame, little-endian > encoding: PCM_SIGNED > channels: 2 > frame rate [1/s]: 22050.0 > frame size [bytes]: 4 > sample rate [1/s]: 22050.0 > sample size [bit]: 16 > big endian: false > line supported: false > > > > Clip Data Lines: PCM_SIGNED 22050.0 Hz, 16 bit, stereo, 4 bytes/frame, > little-endian > encoding: PCM_SIGNED > channels: 2 > frame rate [1/s]: 22050.0 > frame size [bytes]: 4 > sample rate [1/s]: 22050.0 > sample size [bit]: 16 > big endian: false > line supported: false > > > > Target Data Lines: PCM_SIGNED 22050.0 Hz, 16 bit, stereo, 4 > bytes/frame, little-endian > encoding: PCM_SIGNED > channels: 2 > frame rate [1/s]: 22050.0 > frame size [bytes]: 4 > sample rate [1/s]: 22050.0 > sample size [bit]: 16 > big endian: false > line supported: false > java.lang.IllegalArgumentException: No line matching interface > SourceDataLine supporting format PCM_SIGNED 22050.0 Hz, 16 bit, stereo, 4 > bytes/frame, little-endian is supported. > at > java.desktop/javax.sound.sampled.AudioSystem.getLine(AudioSystem.java:425) > at AudioFormats.main(AudioFormats.java:77) > java.lang.IllegalArgumentException: No line matching interface Clip > supporting format PCM_SIGNED unknown sample rate, 16 bit, stereo, 4 > bytes/frame, big-endian is supported. > at > java.desktop/javax.sound.sampled.AudioSystem.getLine(AudioSystem.java:425) > at > java.desktop/javax.sound.sampled.AudioSystem.getClip(AudioSystem.java:461) > at AudioFormats.main(AudioFormats.java:94) > > On another application I've also had an error pointing to the > DirectAudioDevice.java that also plays the same .wav file. > > Caused by: java.lang.IllegalArgumentException: Line unsupported: interface > SourceDataLine > at > java.desktop/com.sun.media.sound.DirectAudioDevice.getLine(DirectAudioDevice.java:175) > at > java.desktop/javax.sound.sampled.AudioSystem.getSourceDataLine(AudioSystem.java:572) > > Here's aplay output for that file too in case that helps: > > #aplay -vvv SuccessBuzzer.wav > Playing WAVE 'SuccessBuzzer.wav' : Signed 16 bit Little Endian, Rate 22050 > Hz, Stereo > Hardware PCM card 0 'audiocodec' device 0 subdevice 0 > Its setup is: > stream : PLAYBACK > access : RW_INTERLEAVED > format : S16_LE > subformat : STD > channels : 2 > rate : 22050 > exact rate : 22050 (22050/1) > msbits : 16 > buffer_size : 8192 > period_size : 2048 > period_time : 92879 > tstamp_mode : NONE > tstamp_type : MONOTONIC > period_step : 1 > avail_min : 2048 > period_event : 0 > start_threshold : 8192 > stop_threshold : 8192 > silence_threshold: 0 > silence_size : 0 > boundary : 1073741824 > appl_ptr : 0 > hw_ptr : 0 > Max peak (4096 samples): 0x0000095f ## 7% > Max peak (4096 samples): 0x00001a62 ##### 20% > Max peak (4096 samples): 0x00001b1c ##### 21% > Max peak (4096 samples): 0x0000182c #### 18% > Max peak (4096 samples): 0x000005de # 4% > Max peak (4096 samples): 0x00000451 # 3% > Max peak (4096 samples): 0x000001d5 # 1% > > > Thanks, > John Cummings > >
