[Spice-devel] video playback issue with vp8/h264 patch

Victor Toso lists at victortoso.com
Wed Nov 25 00:57:18 PST 2015 

Hi,

This message was sent 3 times in a row.
We received it in case you are wondering it ;)

http://lists.freedesktop.org/archives/spice-devel/2015-November/024252.html

Cheers,
  toso

On Wed, Nov 25, 2015 at 05:51:30PM +0900, Sunny Shin wrote:
> Hello Francois Gouget,
>
> While applying and testing your patches supporting VP8 and H264, I had an
> issue that VM gets hung when playing video. From gstack, it seems stuck in
> gstreamer. Please check the details below, and let me know what might be
> wrong. Thank you.
> 
> 
> - OS: CentOS 7
> - Patches from git server
>     https://github.com/fgouget/spice/tree/gst
>     https://github.com/fgouget/spice-gtk/tree/gst
>     https://github.com/fgouget/spice-common/tree/gst
>     https://github.com/fgouget/spice-protocol/tree/gst
> - hardcoding to change the codec from mjpeg to vp8 or h264
>     spice-gst/server/red_worker.c
>         dcc_create_video_encoder()
>             << return mjpeg_encoder_new(SPICE_VIDEO_CODEC_TYPE_MJPEG, ...)
>             >> return gstreamer_encoder_new(SPICE_VIDEO_CODEC_TYPE_H264,
> ...)
> - whenever trying to play a video, remote viewer doesn't respond, and VM
> gets hung. Below is the gstack output of qemu-kvm process which was
> captured after I'd closed remote viewer.
> 
> Thread 19 (Thread 0x7f0311065700 (LWP 15778)):
> #0  0x00007f0320083f7d in __lll_lock_wait () from /lib64/libpthread.so.0
> #1  0x00007f032007fd32 in _L_lock_791 () from /lib64/libpthread.so.0
> #2  0x00007f032007fc38 in pthread_mutex_lock () from /lib64/libpthread.so.0
> #3  0x00007f0322b3a3a9 in qemu_mutex_lock ()
> #4  0x00007f0322a82634 in kvm_cpu_exec ()
> #5  0x00007f0322a356f5 in qemu_kvm_cpu_thread_fn ()
> #6  0x00007f032007ddf5 in start_thread () from /lib64/libpthread.so.0
> #7  0x00007f031c0e91ad in clone () from /lib64/libc.so.6
> Thread 18 (Thread 0x7f030bfff700 (LWP 15793)):
> #0  0x00007f0320081705 in pthread_cond_wait@@GLIBC_2.3.2 () from
> /lib64/libpthread.so.0
> #1  0x00007f0321320c57 in g_cond_wait () from /lib64/libglib-2.0.so.0
> #2  0x00007f0316e7b8b7 in gst_app_sink_pull_sample (appsink=0x7f02b838cbc0)
> at gstappsink.c:1219
> #3  0x00007f031ce0347d in pull_compressed_buffer () from
> /lib64/libspice-server.so.1
> #4  0x00007f031ce03944 in spice_gst_encoder_encode_frame () from
> /lib64/libspice-server.so.1
> #5  0x00007f031cdca828 in red_marshall_stream_data () from
> /lib64/libspice-server.so.1
> #6  0x00007f031cdcab8b in marshall_qxl_drawable () from
> /lib64/libspice-server.so.1
> #7  0x00007f031cdcc442 in display_channel_send_item () from
> /lib64/libspice-server.so.1
> #8  0x00007f031cd9f7e6 in red_channel_client_send_item () from
> /lib64/libspice-server.so.1
> #9  0x00007f031cda1f69 in red_channel_client_push () from
> /lib64/libspice-server.so.1
> #10 0x00007f031cda201e in red_channel_push () from
> /lib64/libspice-server.so.1
> #11 0x00007f031cdcc6ff in red_push () from /lib64/libspice-server.so.1
> #12 0x00007f031cdd3ed9 in red_worker_main () from
> /lib64/libspice-server.so.1
> #13 0x00007f032007ddf5 in start_thread () from /lib64/libpthread.so.0
> #14 0x00007f031c0e91ad in clone () from /lib64/libc.so.6
> Thread 17 (Thread 0x7f030923b700 (LWP 15899)):
> #0  0x00007f0320081705 in pthread_cond_wait@@GLIBC_2.3.2 () from
> /lib64/libpthread.so.0
> #1  0x00007f0321320c57 in g_cond_wait () from /lib64/libglib-2.0.so.0
> #2  0x00007f0316e77f6d in gst_app_src_create (bsrc=0x7f02b829f900,
> offset=<optimized out>, size=4096, buf=0x7f030923a9a0) at gstappsrc.c:1197
> #3  0x00007f0316c432f5 in gst_base_src_get_range (src=src at entry=0x7f02b829f900,
> offset=offset at entry=641048, length=length at entry=4096,
> buf=buf at entry=0x7f030923aaa8)
> at gstbasesrc.c:2455
> #4  0x00007f0316c44e43 in gst_base_src_loop (pad=0x7f02b838a060) at
> gstbasesrc.c:2731
> #5  0x00007f0316997081 in gst_task_func (task=0x7f02b8395050) at
> gsttask.c:331
> #6  0x00007f032130403c in g_thread_pool_thread_proxy () from
> /lib64/libglib-2.0.so.0
> #7  0x00007f03213036b5 in g_thread_proxy () from /lib64/libglib-2.0.so.0
> #8  0x00007f032007ddf5 in start_thread () from /lib64/libpthread.so.0
> #9  0x00007f031c0e91ad in clone () from /lib64/libc.so.6
> Thread 16 (Thread 0x7f0308a3a700 (LWP 15900)):
> #0  0x00007f0320081705 in pthread_cond_wait@@GLIBC_2.3.2 () from
> /lib64/libpthread.so.0
> #1  0x00007f03099154db in x264_threadpool_thread () from
> /usr/local/lib/gstreamer-1.0/libgstx264.so
> #2  0x00007f032007ddf5 in start_thread () from /lib64/libpthread.so.0
> #3  0x00007f031c0e91ad in clone () from /lib64/libc.so.6
> ... ...
> Thread 3 (Thread 0x7f02ad7fa700 (LWP 15913)):
> #0  0x00007f0320081705 in pthread_cond_wait@@GLIBC_2.3.2 () from
> /lib64/libpthread.so.0
> #1  0x00007f03099154db in x264_threadpool_thread () from
> /usr/local/lib/gstreamer-1.0/libgstx264.so
> #2  0x00007f032007ddf5 in start_thread () from /lib64/libpthread.so.0
> #3  0x00007f031c0e91ad in clone () from /lib64/libc.so.6
> Thread 2 (Thread 0x7f02a9c32700 (LWP 15914)):
> #0  0x00007f0320081705 in pthread_cond_wait@@GLIBC_2.3.2 () from
> /lib64/libpthread.so.0
> #1  0x00007f0309914bd5 in x264_lookahead_thread () from
> /usr/local/lib/gstreamer-1.0/libgstx264.so
> #2  0x00007f032007ddf5 in start_thread () from /lib64/libpthread.so.0
> #3  0x00007f031c0e91ad in clone () from /lib64/libc.so.6
> Thread 1 (Thread 0x7f032282fa40 (LWP 15767)):
> #0  0x00007f032008425d in read () from /lib64/libpthread.so.0
> #1  0x00007f031cda597a in read_safe () from /lib64/libspice-server.so.1
> #2  0x00007f031cda5f0e in dispatcher_send_message () from
> /lib64/libspice-server.so.1
> #3  0x00007f031cda6d5f in red_dispatcher_disconnect_cursor_peer () from
> /lib64/libspice-server.so.1
> #4  0x00007f031cda4b9d in red_client_destroy () from
> /lib64/libspice-server.so.1
> #5  0x00007f031cdd8972 in reds_client_disconnect () from
> /lib64/libspice-server.so.1
> #6  0x00007f031cda9aba in main_dispatcher_handle_client_disconnect () from
> /lib64/libspice-server.so.1
> #7  0x00007f031cda5c68 in dispatcher_handle_single_read () from
> /lib64/libspice-server.so.1
> #8  0x00007f031cda5d67 in dispatcher_handle_recv_read () from
> /lib64/libspice-server.so.1
> #9  0x00007f031cda9cdc in dispatcher_handle_read () from
> /lib64/libspice-server.so.1
> #10 0x00007f03229c4206 in qemu_iohandler_poll ()
> #11 0x00007f03229c8768 in main_loop_wait ()
> #12 0x00007f03228ec340 in main ()

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