使用以下方法很好
gst-launch-0.10 filesrc location=temp.wav ! wavparse ! audioconvert ! alsasink device=hw:0
同样如此
gst-launch-1.0 filesrc location=temp.wav ! wavparse ! audioconvert ! alsasink device=hw:0
当我使用hw:2时,如果玩家正在使用它,我会收到设备忙错误,否则会收到内部数据流错误。
如果启用调试
GST_DEBUG=2
我得到以下信息
alsa pcm_hw.c:1693:_snd_pcm_hw_open: alsalib error: Invalid value for card
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
wavparse gstwavparse.c:2249:gst_wavparse_loop:<wavparse0> error: Internal data flow error.
wavparse gstwavparse.c:2249:gst_wavparse_loop:<wavparse0> error: streaming task paused, reason not-negotiated (-4)
basetransform gstbasetransform.c:1414:gst_base_transform_setcaps:<audioconvert0> transform could not transform audio/x-raw, format=(string)S16LE, layout=(string)interleaved, channels=(int)2, channel-mask=(bitmask)0x0000000000000003, rate=(int)44100 in anything we support
ERROR: from element /GstPipeline:pipeline0/GstWavParse:wavparse0: Internal data flow error.
我确实从以下两个方面得到了声音
gst123 -a alsa=hw:2 temp.wav
aplay -D hw:2 temp.wav
我是否遗漏了gst发布的一些其他论点?
任何帮助都将不胜感激!
