First test of libVLC include files.

External libraries (GTK, GSL, SDL, Allegro, OpenGL, etc) questions.
geminis4941
Posts: 59
Joined: Jul 15, 2009 12:41

Re: First test of libVLC include files.

Postby geminis4941 » Jan 05, 2018 11:22

Can someone expand this sample to play the video in a WINDOW created with CreateWindowEx() and a message loop. Thanks in advanced.
WQ1980
Posts: 32
Joined: Sep 25, 2015 12:04
Location: Russia

Re: First test of libVLC include files.

Postby WQ1980 » Jan 06, 2018 16:46

geminis4941 wrote:Can someone expand this sample to play the video in a WINDOW created with CreateWindowEx() and a message loop. Thanks in advanced.


Small example window.bi + vlc.bi (window version, without image buffer and etc.)

Code: Select all

#Include Once "vlc\vlc.bi"
#Include Once "windows.bi"


Dim msg As MSG
Dim As WNDCLASSEX wc
Dim As String NameClass="MyClass"
Dim As HINSTANCE Hinst=GetModuleHandle(0)

Declare Function wndproc(hwnd As HWND, msg As UInteger,wparam As WPARAM, lparam As LPARAM) As Integer


With wc
   .cbSize=SizeOf(WNDCLASSEX)
   .style=CS_HREDRAW Or CS_VREDRAW
   .lpfnWndProc=@wndproc
   .hInstance=Hinst
   .hIcon=LoadIcon(0,IDI_QUESTION)
   .hCursor=LoadCursor(0,IDC_HELP)
   .hbrBackground=Cast(HBRUSH,COLOR_WINDOWFRAME)
   .lpszClassName=StrPtr(NameClass)
   .hIconSm=.hIcon
End With

If RegisterClassEx(@wc)=0 Then
   ? "Register error, press any key"
   Sleep
   End
EndIf

CreateWindowEx(0,NameClass,"Window 1",_
WS_VISIBLE Or WS_OVERLAPPEDWINDOW,100,100,300,300,0,0,Hinst,0)


While GetMessage(@msg,0,0,0)
   TranslateMessage(@msg)
   DispatchMessage(@msg)
Wend




Function wndproc(hwnd As HWND, msg As UInteger,_
   wparam As WPARAM, lparam As LPARAM) As Integer
   Select Case msg
      Case WM_DESTROY
         PostQuitMessage(0)
      Case WM_CREATE '' create pleer after create parent window

         Dim As String sPath
         sPath = "C:\1.mp4" '' video file path (utf-8?)


         Dim p_li As libvlc_instance_t Ptr
         Dim p_mi As libvlc_media_player_t Ptr
         Dim p_md As libvlc_media_t Ptr

         Dim As ZString Ptr vlc_argv(0 To ...) = {@"--no-video-title-show"} '' command line vlc
         
         p_li = libvlc_new(UBound(vlc_argv)+1,  @vlc_argv(0))
         p_md = libvlc_media_new_path(p_li,sPath)
         
         p_mi = libvlc_media_player_new_from_media( p_md )
         libvlc_media_release(p_md)
         libvlc_media_player_play( p_mi)


         libvlc_media_player_set_hwnd(p_mi, hwnd) '' set parent window


   End Select
   Return DefWindowProc(hwnd,msg,wparam,lparam)
End Function




(libvlc.dll, libvlccore.dll, plugins folder from \VideoLAN\VLC -> sample folder)
grindstone
Posts: 582
Joined: May 05, 2015 5:35
Location: Germany

Re: First test of libVLC include files.

Postby grindstone » Jan 07, 2018 0:40

Alternatively, you can create the VLC instance outside of wndproc and then link it to the window. And maybe additionally you'll have to set a path to libvlc's plugin directory:

Code: Select all

#Include Once "vlc\vlc.bi"
#Include Once "windows.bi"

Dim msg As MSG
Dim As WNDCLASSEX wc
Dim As String NameClass="MyClass"
Dim As HINSTANCE Hinst=GetModuleHandle(0)

Declare Function wndproc(hwnd As HWND, msg As UInteger,wparam As WPARAM, lparam As LPARAM) As Integer

SetEnviron ("VLC_PLUGIN_PATH=e:\vlc-2_2_1\plugins") 'replace with your plugin path

With wc
   .cbSize=SizeOf(WNDCLASSEX)
   .style=CS_HREDRAW Or CS_VREDRAW
   .lpfnWndProc=@wndproc
   .hInstance=Hinst
   .hIcon=LoadIcon(0,IDI_QUESTION)
   .hCursor=LoadCursor(0,IDC_HELP)
   .hbrBackground=Cast(HBRUSH,COLOR_WINDOWFRAME)
   .lpszClassName=StrPtr(NameClass)
   .hIconSm=.hIcon
End With

If RegisterClassEx(@wc)=0 Then
   ? "Register error, press any key"
   Sleep
   End
EndIf

CreateWindowEx(0,NameClass,"Window 1",_
WS_VISIBLE Or WS_OVERLAPPEDWINDOW,100,100,300,300,0,0,Hinst,0)

Dim As HWND hwnd = FindWindow(0, "Window 1") 'get window handle

Dim As String sPath
sPath = "C:\1.mp4" '' video file path (utf-8?)

Dim p_li As libvlc_instance_t Ptr
Dim p_mi As libvlc_media_player_t Ptr
Dim p_md As libvlc_media_t Ptr

Dim As ZString Ptr vlc_argv(0 To ...) = {@"--no-video-title-show"} '' command line vlc

p_li = libvlc_new(UBound(vlc_argv)+1,  @vlc_argv(0))
p_md = libvlc_media_new_path(p_li,sPath)

p_mi = libvlc_media_player_new_from_media( p_md )
libvlc_media_release(p_md)
libvlc_media_player_play( p_mi)

libvlc_media_player_set_hwnd(p_mi, hwnd) '' set parent window

While GetMessage(@msg,0,0,0)
   TranslateMessage(@msg)
   DispatchMessage(@msg)
Wend

Function wndproc(hwnd As HWND, msg As UInteger,_
   wparam As WPARAM, lparam As LPARAM) As Integer
   Select Case msg
      Case WM_DESTROY
         PostQuitMessage(0)
      
   End Select
   Return DefWindowProc(hwnd,msg,wparam,lparam)
End Function
gcdevelops
Posts: 7
Joined: Sep 18, 2018 19:46

Re: First test of libVLC include files.

Postby gcdevelops » Sep 18, 2018 19:55

WQ1980 wrote:Hi!
My simple code (libvlc.dll, libvlccore.dll and folder "plugins" from VLC folder -> code folder):
[

hello,
i'm trying again freebasic after some years, I used it with happiness some years ago to get away trouble at job doing some intelligent batch, barcode scanner and more. I love freebasic.
I'm trying libvlc because I am looking for a way to reproduce a videoclip in new window wich should only contain the clip, the ability to resize maintaining the correct aspect radio and without any control. I'm trying the examples above and i tried to copy ibvlc.dll, libvlccore.dll and folder "plugins" (the linux equivalent because i am on a linux system); i tried to put the files both in the source code folder and both inside include/freebasic/vlc but cannot compile this is the error:

ld: impossibile trovare -lvlc
linking failed: 'ld' terminated with exit code 1

any tip? thanks in advice
St_W
Posts: 1413
Joined: Feb 11, 2009 14:24
Location: Austria
Contact:

Re: First test of libVLC include files.

Postby St_W » Sep 18, 2018 20:41

gcdevelops wrote:ld: impossibile trovare -lvlc
linking failed: 'ld' terminated with exit code 1

The linker complains about being unable to find the library ("-l" stands for library) named "vlc". There should be a file "libvlc.a" or "vlc.so" or "libvlc.so" or similar. To make things simple just put it in the same folder as your source code. Also make sure the the library file is the correct one (e.g. 32 bit if you are using 32 bit freebasic).
badidea
Posts: 1014
Joined: May 24, 2007 22:10
Location: The Netherlands

Re: First test of libVLC include files.

Postby badidea » Sep 18, 2018 20:46

Got the same error on Ubuntu 64-bit with FBC 64-bit (not even going to try 32-bit in this case).
Linker error went away by creating the highlighted sym-link below.

/usr/lib$ ls -l libvlc*
lrwxrwxrwx 1 root root 19 Aug 11 2017 libvlccore.so.8 -> libvlccore.so.8.0.0
-rw-r--r-- 1 root root 1044808 Aug 11 2017 libvlccore.so.8.0.0
lrwxrwxrwx 1 root root 15 Sep 18 22:40 libvlc.so -> libvlc.so.5.5.0
lrwxrwxrwx 1 root root 15 Aug 11 2017 libvlc.so.5 -> libvlc.so.5.5.0
-rw-r--r-- 1 root root 130128 Aug 11 2017 libvlc.so.5.5.0

I cannot check if it actually works. I do not have the media files.
Last edited by badidea on Sep 18, 2018 20:58, edited 1 time in total.
gcdevelops
Posts: 7
Joined: Sep 18, 2018 19:46

Re: First test of libVLC include files.

Postby gcdevelops » Sep 18, 2018 20:57

gcdevelops wrote:[

ld: impossibile trovare -lvlc
linking failed: 'ld' terminated with exit code 1

any tip? thanks in advice


thanks for the prompt (almost istant) reply!
well, I solved simply installing libvlc-dev as described there https://wiki.videolan.org/LibVLC_Tutorial/
so if using ubuntu 18.04 like me just use this command:

sudo apt install libvlc-dev

after that I can compile the first example wich works perfectly for my needs.
ps: copying vlc libs/files isn't needed; almost on my machine
St_W
Posts: 1413
Joined: Feb 11, 2009 14:24
Location: Austria
Contact:

Re: First test of libVLC include files.

Postby St_W » Sep 19, 2018 7:59

gcdevelops wrote:ps: copying vlc libs/files isn't needed; almost on my machine

It shouldn't on Linux, because libraries are typically installed globally (system-wide) there. That's different on Windows where most applications are shipped with all their dependencies included.
gcdevelops
Posts: 7
Joined: Sep 18, 2018 19:46

Re: First test of libVLC include files.

Postby gcdevelops » Sep 22, 2018 21:10

I have some problems when playing more then one media.
I'working in a program who must play some clip in a random way, so I made a sub to do this... after lot of try it stop's working from the second clip... surely i am doing something wrong with libvlc, maybe I have to put some command after the first clip finish, but on the videolan documentation i havn't find nothing... here is some logs:

./libvlc-example4
wait on start ...
libva info: VA-API version 1.1.0
libva info: va_getDriverName() returns 0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so
libva info: Found init function __vaDriverInit_1_1
libva info: va_openDriver() returns 0
[00007f5eb80344a0] avcodec decoder: Using Intel i965 driver for Intel(R) Haswell Mobile - 2.1.0 for hardware decoding
size: 654 x 374 length: 36
playing ...
sleep press any key ---> AFTER THIS THE SECOND CLIP SHOULD START
[h264 @ 0x7f5eb8077720] get_buffer() failed
[h264 @ 0x7f5eb8077720] thread_get_buffer() failed
[h264 @ 0x7f5eb8077720] decode_slice_header error
[h264 @ 0x7f5eb8077720] no frame!
[h264 @ 0x7f5eb8086ec0] get_buffer() failed
[h264 @ 0x7f5eb8086ec0] thread_get_buffer() failed
[h264 @ 0x7f5eb8086ec0] decode_slice_header error
[h264 @ 0x7f5eb8086ec0] no frame!
Errore di segmentazione (core dump creato)

here is my code:

Code: Select all

 from: simplest libVLC example
' https://sourceforge.net/projects/simplestlibvlcexample/

#include once "vlc/vlc.bi"

' I tested flc, mp4, avi, xvid ...
dim shared TEST as string

sub play

'chdir exepath()
var instance = libvlc_new (0, NULL)
var media    = libvlc_media_new_path (instance,TEST)
var player   = libvlc_media_player_new_from_media (media)
libvlc_media_release(media)
libvlc_media_player_play(player)
dim as long w,h,l,timeout=2000 ' 2 seconds
print "wait on start ..."
while w=0 andalso h=0 andalso l=0 andalso timeout>=0
  w = libvlc_video_get_width(player)
  h = libvlc_video_get_height(player)
  l = libvlc_media_player_get_length(player)
  sleep 100 : timeout-=100
wend
if timeout<0 then
  libvlc_media_player_release(player)
  libvlc_release(instance)
  ?:?:?
  print "play back not started !"
  print "error log: in console ?"
  beep:sleep:end
end if
print "size: " & w & " x " & h & " length: " & l\1000
print "playing ..."
print "sleep press any key"
sleep
libvlc_media_player_stop(player)
libvlc_media_release(media)
libvlc_media_player_release(player)
libvlc_release(instance)


end sub

TEST = "./video.mkv"
play
TEST = "./video2.mkv"
play
gcdevelops
Posts: 7
Joined: Sep 18, 2018 19:46

Re: First test of libVLC include files.

Postby gcdevelops » Sep 26, 2018 20:48

i have made a code that can play more then one media in sequence as i need... i post an example.... it work like a charm on windows, but on linux again plays perfectly only the first clip and starting from the second the clip is not reproduced and the console says:

sleep press any key
[00007fef08036d20] cache_read stream error: cannot pre fill buffer
[00007fef080349a0] mjpeg demux error: cannot peek

any tip?

here is the code

Code: Select all

#include once "vlc/vlc.bi"

dim shared TEST as string
dim shared instance as integer
dim shared player as integer
instance = libvlc_new (0, NULL)
player = libvlc_media_player_new (instance)
chdir exepath()

sub play
var media    = libvlc_media_new_path (instance,TEST)
media    = libvlc_media_new_path (instance,TEST)
libvlc_media_player_set_media(player,media)
libvlc_media_player_play(player)

dim as long w,h,l,timeout=2000 ' 2 seconds print "wait on start ..."
while w=0 andalso h=0 andalso l=0 andalso timeout>=0
   w = libvlc_video_get_width(player)
   h = libvlc_video_get_height(player)
   l = libvlc_media_player_get_length(player)
   sleep 100 : timeout-=100
wend

if timeout<0 then
  libvlc_media_player_release(player)
  libvlc_release(instance)
  ?:?:?
  print "play back not started !"
  print "error log: in console ?"
  beep:sleep:end
end if

print "size: " & w & " x " & h & " length: " & l\1000
print "playing ..."
print "sleep press any key"
sleep
libvlc_media_player_pause(player)
end sub


TEST = "./prova1.avi"
play
TEST = "./prova2.avi"
play
TEST = "./prova3.avi"
play
TEST = "./prova4.avi"
play


sleep
badidea
Posts: 1014
Joined: May 24, 2007 22:10
Location: The Netherlands

Re: First test of libVLC include files.

Postby badidea » Sep 26, 2018 21:39

The compiler is outputting a lot of warnings here. Seems you are using integers were pointers to certain vlc_types are expected.
The other examples posted above look different. Have a look at those. I get the same behaviour here (linux) with your code.
gcdevelops
Posts: 7
Joined: Sep 18, 2018 19:46

Re: First test of libVLC include files.

Postby gcdevelops » Sep 30, 2018 19:58

following your advice i restarted from the examples above, now I have some other warning during compilation but seems not important (imho of course).
but like before, the code works like a charm on windows, meanwhile on linux plays only the first clip of the cascade, the others don't start, this time without any error.

Code: Select all

' from: simplest libVLC example
' https://sourceforge.net/projects/simplestlibvlcexample/

#include once "vlc/vlc.bi"

' I tested flc, mp4, avi, xvid ...

dim shared TEST as string
dim shared firstplay as string
firstplay="y"

chdir exepath()

sub play
    if firstplay="n" then
        goto notfirstplay
        end if
var instance = libvlc_new (0, NULL)
firstplay="n"

var media    = libvlc_media_new_path (instance,TEST)
var player = libvlc_media_player_new (instance)
'libvlc_media_release(media)
notfirstplay:
libvlc_media_player_set_media(player,media)
libvlc_media_player_play(player)
dim as long w,h,l,timeout=2000 ' 2 seconds
print "wait on start ..."
while w=0 andalso h=0 andalso l=0 andalso timeout>=0
  w = libvlc_video_get_width(player)
  h = libvlc_video_get_height(player)
  l = libvlc_media_player_get_length(player)
  sleep 100 : timeout-=100
wend
if timeout<0 then
  libvlc_media_player_release(player)
  libvlc_release(instance)
  ?:?:?
  print "play back not started !"
  print "error log: in console ?"
  beep:sleep:end
end if
print "size: " & w & " x " & h & " length: " & l\1000
print "playing ..."
print "sleep press any key"
sleep
end sub

TEST = "./prova1.avi"
play
TEST = "./prova1.avi"
play
TEST = "./prova1.avi"
play
TEST = "./prova1.avi"
play


'libvlc_media_player_stop(player)
'libvlc_media_player_release(player)
'libvlc_release(instance)
badidea
Posts: 1014
Joined: May 24, 2007 22:10
Location: The Netherlands

Re: First test of libVLC include files.

Postby badidea » Sep 30, 2018 20:58

Can you try this?
It restarts the same avi after 3 seconds. Could not find more small avi files on my pc.

Code: Select all

' from: simplest libVLC example
' https://sourceforge.net/projects/simplestlibvlcexample/
' https://wiki.videolan.org/LibVLC_Tutorial/

#include once "vlc/vlc.bi"

function play(fileName as string, pInstance as libvlc_instance_t ptr, pPlayer as libvlc_media_player_t ptr) as integer
   var pMedia = libvlc_media_new_path (pInstance, fileName) 'libvlc_media_t ptr
   libvlc_media_player_set_media(pPlayer, pMedia)
   libvlc_media_player_play(pPlayer)
   dim as long w, h, l, timeout = 5000 'ms
   print "wait on start ..."
   while w = 0 andalso h = 0 andalso l = 0 andalso timeout >= 0
      w = libvlc_video_get_width(pPlayer)
      h = libvlc_video_get_height(pPlayer)
      l = libvlc_media_player_get_length(pPlayer)
      sleep 100 : timeout -= 100
   wend
   if timeout < 0 then
      print "Error: play back not started !"
      return -1
   end if
   print "size: " & w & " x " & h & " length: " & l \ 1000
   print "playing 3 seconds ..."
   sleep 3000, 1
   libvlc_media_player_stop(pPlayer)
   'sleep
   return 0
end function

'using pXxx for pointers
var pInstance = libvlc_new(0, NULL) 'libvlc_instance_t ptr
var pPlayer = libvlc_media_player_new(pInstance) 'libvlc_media_player_t ptr
var mediaFileName = "./P1020155.avi"

while inkey$ <> chr(27)
   if play(mediaFileName, pInstance, pPlayer) < 0 then exit while
   sleep 500, 1 'short pause (optinal)
wend
libvlc_media_player_release(pPlayer)
libvlc_release(pInstance)
print "END of program"

'chdir exepath() 'Not needed?
'libvlc_media_player_stop(player)
'libvlc_media_player_release(player)
'libvlc_release(instance)
'libvlc_media_release(media)

Seems to work here, but no previous experience with libvlc myself
badidea
Posts: 1014
Joined: May 24, 2007 22:10
Location: The Netherlands

Re: First test of libVLC include files.

Postby badidea » Sep 30, 2018 21:14

This one waits for the AVI to end, before starting a new one.

Code: Select all

' from: simplest libVLC example
' https://sourceforge.net/projects/simplestlibvlcexample/
' https://wiki.videolan.org/LibVLC_Tutorial/
' https://www.videolan.org/developers/vlc-branch/doc/doxygen/html/group__libvlc.html
' https://www.videolan.org/developers/vlc/doc/doxygen/html/group__libvlc__media__player.html

#include once "vlc/vlc.bi"

function play(fileName as string, pInstance as libvlc_instance_t ptr, pPlayer as libvlc_media_player_t ptr) as integer
   var pMedia = libvlc_media_new_path (pInstance, fileName) 'libvlc_media_t ptr
   libvlc_media_player_set_media(pPlayer, pMedia)
   libvlc_media_player_play(pPlayer)
   dim as long w, h, l, timeout = 5000 'ms
   print "wait on start ..."
   while w = 0 andalso h = 0 andalso l = 0 andalso timeout >= 0
      w = libvlc_video_get_width(pPlayer)
      h = libvlc_video_get_height(pPlayer)
      l = libvlc_media_player_get_length(pPlayer)
      sleep 100 : timeout -= 100
   wend
   if timeout < 0 then
      print "Error: play back not started !"
      return -1
   end if
   print "size: " & w & " x " & h & " length: " & l \ 1000
   while libvlc_media_get_state(pMedia) <> libvlc_ended
      if inkey$ = chr(27) then return -1
      sleep 100, 1
   wend
   libvlc_media_player_stop(pPlayer)
   'sleep
   return 0
end function

'using pXxx for pointers
var pInstance = libvlc_new(0, NULL) 'libvlc_instance_t ptr
var pPlayer = libvlc_media_player_new(pInstance) 'libvlc_media_player_t ptr
var mediaFileName = "./P1020155.avi"

while inkey$ <> chr(27)
   if play(mediaFileName, pInstance, pPlayer) < 0 then exit while
   sleep 500, 1 'short pause (optional)
wend
libvlc_media_player_release(pPlayer)
libvlc_release(pInstance)
print "END of program"

'chdir exepath() 'Not needed?
'libvlc_media_player_stop(player)
'libvlc_media_player_release(player)
'libvlc_release(instance)
'libvlc_media_release(media)

It does close and open again a new window for each play. Is that a problem?

Edit: Small update, easier to end the program <ESC>
Last edited by badidea on Sep 30, 2018 21:33, edited 1 time in total.
gcdevelops
Posts: 7
Joined: Sep 18, 2018 19:46

Re: First test of libVLC include files.

Postby gcdevelops » Sep 30, 2018 21:29

badidea wrote:This one waits for the AVI to end, before starting a new one.

Code: Select all

' from: simplest libVLC example
' https://sourceforge.net/projects/simplestlibvlcexample/
' https://wiki.videolan.org/LibVLC_Tutorial/
' https://www.videolan.org/developers/vlc/doc/doxygen/html/group__libvlc__media__player.html

#include once "vlc/vlc.bi"

function play(fileName as string, pInstance as libvlc_instance_t ptr, pPlayer as libvlc_media_player_t ptr) as integer
   var pMedia = libvlc_media_new_path (pInstance, fileName) 'libvlc_media_t ptr
   libvlc_media_player_set_media(pPlayer, pMedia)
   libvlc_media_player_play(pPlayer)
   dim as long w, h, l, timeout = 5000 'ms
   print "wait on start ..."
   while w = 0 andalso h = 0 andalso l = 0 andalso timeout >= 0
      w = libvlc_video_get_width(pPlayer)
      h = libvlc_video_get_height(pPlayer)
      l = libvlc_media_player_get_length(pPlayer)
      sleep 100 : timeout -= 100
   wend
   if timeout < 0 then
      print "Error: play back not started !"
      return -1
   end if
   print "size: " & w & " x " & h & " length: " & l \ 1000
   while libvlc_media_get_state(pMedia) <> libvlc_ended
      sleep 100, 1
   wend
   libvlc_media_player_stop(pPlayer)
   'sleep
   return 0
end function

'using pXxx for pointers
var pInstance = libvlc_new(0, NULL) 'libvlc_instance_t ptr
var pPlayer = libvlc_media_player_new(pInstance) 'libvlc_media_player_t ptr
var mediaFileName = "./P1020155.avi"

while inkey$ <> chr(27)
   if play(mediaFileName, pInstance, pPlayer) < 0 then exit while
   sleep 500, 1 'short pause (optional)
wend
libvlc_media_player_release(pPlayer)
libvlc_release(pInstance)
print "END of program"

'chdir exepath() 'Not needed?
'libvlc_media_player_stop(player)
'libvlc_media_player_release(player)
'libvlc_release(instance)
'libvlc_media_release(media)

It does close and open again a new window for each play. Is that a problem?


this code seems to work well also on linux thx!
also my code close and open the window, the problem was that on linux only the first clip where played, while on windows plays all the clips with no problems. absolutely same code, same fb version. Maybe some of the compiler warnings that my version has genereted some problem on the linux side.
Last edited by gcdevelops on Sep 30, 2018 21:39, edited 1 time in total.

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