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Towards an example for rendering MPP output with DRI2 #27

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ydirson opened this issue Sep 29, 2017 · 2 comments
Closed

Towards an example for rendering MPP output with DRI2 #27

ydirson opened this issue Sep 29, 2017 · 2 comments

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@ydirson
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ydirson commented Sep 29, 2017

As I am having performance issues with my experimental usage of MPP in our in-house app, I have started to replicate what I did in the form of an example, by extending the official decoder test, in https://github.com/BladeGroup/mpp - in the hope that a complete example may also help others to gain time (when it is correct, obviously ;).

This example is slightly different from our app (where SDL already initializes a lot of graphics stuff), and I went into DRI2 initialization manually, but I'm apparently missing something, as drmPrimeFDToHandle() is still failing with EPERM on all frames. Use "-m 2" to activate display using DRI2.
@hizukiayaka
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Ask the SDL, not us.

@ydirson
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ydirson commented Sep 1, 2018

My question is specifically about how to render the MPP output with DRI2 without SDL, which I only mentionned as being part of another piece of code that dose work :)

HermanChen added a commit that referenced this issue Feb 6, 2024
@HermanChen
fix[vproc]: Fix deadlock in vproc thread
9431bbc 
BUG is reported from https://redmine.rock-chips.com/issues/464206

Thread 18 (LWP 2440):
#0  __lll_lock_wait (futex=0x7f34000d48, private=0) at lowlevellock.c:52
#1  0x0000007fab5b1540 in __GI___pthread_mutex_lock (mutex=0x7f34000d48) at pthread_mutex_lock.c:115
#2  0x0000007fa9e0299c in dec_vproc_signal (ctx=0x7f34001260) at ../git/mpp/vproc/mpp_dec_vproc.cpp:929
#3  0x0000007fa9df5bdc in mpp_dec_notify (ctx=0x7f602be600, flag=1088) at ../git/mpp/codec/mpp_dec.cpp:956
#4  0x0000007fa9e0ef30 in mpp_buffer_ref_dec (buffer=0x7f6403f6c8, caller=caller@entry=0x7fa9ee300c "mpp_frame_deinit") at ../git/mpp/base/mpp_buffer_impl.cpp:509
#5  0x0000007fa9e0fb84 in mpp_buffer_put_with_caller (buffer=<optimized out>, caller=caller@entry=0x7fa9ee300c "mpp_frame_deinit") at ../git/mpp/base/mpp_buffer.cpp:105
#6  0x0000007fa9e11820 in mpp_frame_deinit (frame=frame@entry=0x7f602ec340) at ../git/mpp/base/mpp_frame.cpp:85
#7  0x0000007fabd6bf4c in rkmpp_release_frame (opaque=<optimized out>, data=0x7f602ba600 <error: Cannot access memory at address 0x7f602ba600>) at src/libavcodec/rkmppdec.c:339
#8  0x0000007fab9547dc in buffer_replace (src=0x0, dst=<optimized out>) at src/libavutil/buffer.c:133
#9  av_buffer_unref (buf=<optimized out>) at src/libavutil/buffer.c:144
#10 0x0000007fac714bb8 in mp_image_destructor (ptr=0x7f60252c80) at ../../../../../../sources/mpv/video/mp_image.c:209
#11 0x0000007fac748d40 in ta_free (ptr=0x7f60252c80) at ../../../../../../sources/mpv/ta/ta.c:244
#12 0x0000007fac715178 in mp_image_unrefp (p_img=p_img@entry=0x7f4c00bfc0) at ../../../../../../sources/mpv/video/mp_image.c:472
#13 0x0000007fac73396c in wlbuf_pool_entry_release (data=0x7f4c00bfa0, wl_buffer=<optimized out>) at ../../../../../../sources/mpv/video/out/wlbuf_pool.c:132
#14 0x0000007fb4cfe328 in ffi_call_SYSV () at ../libffi-3.3/src/aarch64/sysv.S:114
#15 0x0000007fb4cfdb44 in ffi_call_int (cif=cif@entry=0x7f70fdec80, fn=0x7f70fdeca0, orig_rvalue=orig_rvalue@entry=0x0, avalue=0x10, avalue@entry=0x7f70fded50, closure=0x200000001, closure@entry=0x0) at ../libffi-3.3/src/aarch64/ffi.c:747
#16 0x0000007fb4cfdf24 in ffi_call (cif=cif@entry=0x7f70fdec80, fn=<optimized out>, rvalue=rvalue@entry=0x0, avalue=avalue@entry=0x7f70fded50) at ../libffi-3.3/src/aarch64/ffi.c:756
#17 0x0000007faa49c7c0 in wl_closure_invoke (closure=0x7f4c00bff0, flags=<optimized out>, target=<optimized out>, opcode=0, data=<optimized out>) at ../wayland-1.22.0/src/connection.c:1025
#18 0x0000007faa499df0 in dispatch_event (display=display@entry=0x7f4c001d40, queue=<optimized out>) at ../wayland-1.22.0/src/wayland-client.c:1644
#19 0x0000007faa49b2c8 in dispatch_queue (queue=0x7f4c001e30, display=0x7f4c001d40) at ../wayland-1.22.0/src/wayland-client.c:1790
#20 wl_display_dispatch_queue_pending (display=0x7f4c001d40, queue=0x7f4c001e30) at ../wayland-1.22.0/src/wayland-client.c:2032
#21 0x0000007faa49b2f4 in wl_display_dispatch_pending (display=<optimized out>) at ../wayland-1.22.0/src/wayland-client.c:2095
#22 0x0000007fac73e2cc in vo_wayland_dispatch_events (wl=0x7f4c000e40, nfds=nfds@entry=2, timeout=timeout@entry=100) at ../../../../../../sources/mpv/video/out/wayland_common.c:1933
#23 0x0000007fac741d7c in vo_wayland_wait_events_timeout (vo=vo@entry=0x7f600abed0, timeout_ms=timeout_ms@entry=100) at ../../../../../../sources/mpv/video/out/wayland_common.c:2594
#24 0x0000007fac73baf4 in draw_frame (vo=0x7f600abed0, frame=0x7f302063b0) at ../../../../../../sources/mpv/video/out/vo_dmabuf_wayland.c:1113
#25 0x0000007fac7360c4 in render_frame (vo=0x7f600abed0) at ../../../../../../sources/mpv/video/out/vo.c:984
#26 vo_thread (ptr=0x7f600abed0) at ../../../../../../sources/mpv/video/out/vo.c:1123
#27 0x0000007fab5af370 in start_thread (arg=0x7f72ffbe06) at pthread_create.c:477
#28 0x0000007fab51bedc in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:78

Thread 14 (LWP 3455):
#0  __lll_lock_wait (futex=0x7f60208040, private=0) at lowlevellock.c:52
#1  0x0000007fab5b1540 in __GI___pthread_mutex_lock (mutex=mutex@entry=0x7f60208040) at pthread_mutex_lock.c:115
#2  0x0000007fa9e0ef48 in mpp_buffer_ref_dec (buffer=0x7f6406fee8, caller=caller@entry=0x7fa9ee1ae7 "check_entry_unused") at ../git/mpp/base/mpp_buffer_impl.cpp:503
#3  0x0000007fa9e0fb84 in mpp_buffer_put_with_caller (buffer=<optimized out>, caller=caller@entry=0x7fa9ee1ae7 "check_entry_unused") at ../git/mpp/base/mpp_buffer.cpp:105
#4  0x0000007fa9e0bf1c in check_entry_unused (entry=0x7f601ef530, impl=0x7f60263ec0) at ../git/mpp/base/mpp_buf_slot.cpp:627
#5  mpp_buf_slot_clr_flag (slots=0x7f60263ec0, index=<optimized out>, type=type@entry=SLOT_QUEUE_USE) at ../git/mpp/base/mpp_buf_slot.cpp:919
#6  0x0000007fa9e00eb0 in dec_vproc_clr_prev0 (ctx=ctx@entry=0x7f34001260) at ../git/mpp/vproc/mpp_dec_vproc.cpp:149
#7  0x0000007fa9e00fd0 in dec_vproc_clr_prev (ctx=ctx@entry=0x7f34001260) at ../git/mpp/vproc/mpp_dec_vproc.cpp:180
#8  0x0000007fa9e012b8 in dec_vproc_thread (data=0x7f34001260) at ../git/mpp/vproc/mpp_dec_vproc.cpp:631
#9  0x0000007fab5af370 in start_thread (arg=0x7f47ffdf16) at pthread_create.c:477
#10 0x0000007fab51bedc in thread_start () at ../sysdeps/unix/sysv/linux/aarch64/clone.S:78

Signed-off-by: Herman Chen <herman.chen@rock-chips.com>
Change-Id: I742e55e745c46a4adb229e2f6f0e2a2c3498e369
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@ydirson @hizukiayaka