Thanks for reply~~ My devices info is below: # cat /proc/asound/devices 0: [ 0] : control 16: [ 0- 0]: digital audio playback 24: [ 0- 0]: digital audio capture 33: : timer
so I changed device name to digital audio capture,but it doesn't work. and i don't have asound.conf,does it metter? The same problme occured when i execute alsa_arecord. my alsa version is 1.0.17 the log is below: I/AudioHardwareALSA( 1761): AudioStreamInALSA::AudioStreamInALSA I/AudioHardwareALSA( 1761): ALSAStreamOps::open --> stream[CAPTURE] devname[digital audio capture_Speaker_normal] E/ALSALib ( 1761): external/alsa-lib/src/pcm/pcm.c:2201: (snd_pcm_open_noupdate) Unknown PCM digital audio capture_Speaker_normal E/ALSALib ( 1761): external/alsa-lib/src/pcm/pcm.c:2201: (snd_pcm_open_noupdate) Unknown PCM digital audio capture_Speaker E/ALSALib ( 1761): external/alsa-lib/src/pcm/pcm.c:2201: (snd_pcm_open_noupdate) Unknown PCM digital audio capture I/AudioHardwareALSA( 1761): Initialized ALSA CAPTURE device default D/AudioHardwareALSA( 1761): Set CAPTURE PCM format to S16_LE (Signed 16 bit Little Endian) D/AudioHardwareALSA( 1761): Using 1 channel for CAPTURE. D/AudioHardwareALSA( 1761): Set CAPTURE sample rate to 8000 HZ D/AudioHardwareALSA( 1761): Buffer size: 2048 D/AudioHardwareALSA( 1761): Latency: 256000 E/ALSALib ( 1761): external/alsa-lib/src/pcm/pcm_mmap.c:371: (snd_pcm_mmap) mmap failed E/AudioHardwareALSA( 1761): Unable to set hardware parameters: No such device or address W/AudioFlinger( 1761): AudioRecordThread: buffer overflow W/AudioRecord( 1761): obtainBuffer timed out (is the CPU pegged?) user=00000000, server=00000000 On 9月10日, 下午9时05分, wineleven <eleven....@gmail.com> wrote: > Try to specify the CAPTURE device name as your board, like hw00:0 or > hw00:1. > > Is the default ALSA device support CAPTURE? > > On Sep 10, 5:10 pm, xie zzl <xie...@hotmail.com> wrote: > > > > > I have ported ALSA to my board, and it can play music well. but i > > cann't use soundrecoder to capture,becouse of mmap failed. > > > The PLAYBACK can be configed successful, no error about mmap. > > I have no idear, can anyone help me ...thanks > > > the ALSA CAPTURE log is below: > > > I/AudioHardwareALSA( 1762): Initialized ALSA CAPTURE device default > > D/AudioHardwareALSA( 1762): Set CAPTURE PCM format to S16_LE (Signed > > 16 bit Little Endian) > > D/AudioHardwareALSA( 1762): Using 1 channel for CAPTURE. > > D/AudioHardwareALSA( 1762): Set CAPTURE sample rate to 8000 HZ > > D/AudioHardwareALSA( 1762): Buffer size: 2048 > > D/AudioHardwareALSA( 1762): Latency: 256000 > > E/ALSALib ( 1762): external/alsa-lib/src/pcm/pcm_mmap.c:371: > > (snd_pcm_mmap) mmap failed > > E/AudioHardwareALSA( 1762): Unable to set hardware parameters: No such > > device or address > > W/AudioFlinger( 1762): AudioRecordThread: buffer overflow > > W/AudioRecord( 1762): obtainBuffer timed out (is the CPU pegged?) > > user=00000000, server=00000000 > > W/AudioRecord( 1762): obtainBuffer timed out (is the CPU pegged?) > > user=00000000, server=00000000- 隐藏被引用文字 - > > - 显示引用的文字 - --~--~---------~--~----~------------~-------~--~----~ unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting -~----------~----~----~----~------~----~------~--~---
