Getting statistics in VLC

[shingaridavesh]

Hi

I am using VLC on Nexus 5 for my research. In my desktop VLC, I can see Statistics displaying Decoded, Displayed, Lost frames, Bitrate etc. information under Current Media Information.
Can I get similar statistics in VLC for Android.

Any guidance about where the code should be inserted or where it is present in Windows VLC would be of great help.

[edwardw]

It's not supported out of the box. If you are feeling adventurous, you can try recompiling, enable it, and make it function, but it will require some work. See http://wiki.videolan.org/AndroidCompile

[shingaridavesh]

Thanks for reply. I implemented the following in decoder.c

static void DecoderDecodeVideo( decoder_t *p_dec, block_t *p_block )
{
decoder_owner_sys_t *p_owner = p_dec->p_owner;
picture_t *p_pic;
int i_lost = 0;
int i_decoded = 0;
int i_displayed = 0;
static int sum_decoded =0;
static int sum_lost =0;
static int sum_displayed =0;


while( (p_pic = p_dec->pf_decode_video( p_dec, &p_block )) )
{
vout_thread_t *p_vout = p_owner->p_vout;
if( DecoderIsExitRequested( p_dec ) )
{
/* It prevent freezing VLC in case of broken decoder */
picture_Release( p_pic );
if( p_block )
block_Release( p_block );
break;
}

i_decoded++;

if( p_owner->i_preroll_end > VLC_TS_INVALID && p_pic->date < p_owner->i_preroll_end )
{
picture_Release( p_pic );
continue;
}

if( p_owner->i_preroll_end > VLC_TS_INVALID )
{
msg_Dbg( p_dec, "End of video preroll" );
msg_Dbg(p_dec, "****************Davesh Here***************\n");
msg_Dbg(p_dec, "Decoded Video = \t%d\n", sum_decoded);
msg_Dbg(p_dec, "Lost Video = \t%d\n", sum_lost);
msg_Dbg(p_dec, "Displayed Video = \t%d\n", sum_displayed);
if( p_vout )
vout_Flush( p_vout, VLC_TS_INVALID+1 );
/* */
p_owner->i_preroll_end = VLC_TS_INVALID;
}

if( p_dec->pf_get_cc &&
( !p_owner->p_packetizer || !p_owner->p_packetizer->pf_get_cc ) )
DecoderGetCc( p_dec, p_dec );

DecoderPlayVideo( p_dec, p_pic, &i_displayed, &i_lost );
}

/* Update ugly stat */
input_thread_t *p_input = p_owner->p_input;

if( p_input != NULL && (i_decoded > 0 || i_lost > 0 || i_displayed > 0) )
{
vlc_mutex_lock( &p_input->p->counters.counters_lock );
sum_decoded += i_decoded;
sum_lost += i_lost;
sum_displayed += i_displayed;
//msg_Dbg(p_dec, "****************Davesh with sum***************\n");
//msg_Dbg(p_dec, "Decoded Video = \t%d\n", sum_decoded);
//msg_Dbg(p_dec, "Lost Video = \t%d\n", sum_lost);
//msg_Dbg(p_dec, "Displayed Video = \t%d\n", sum_displayed);
stats_Update( p_input->p->counters.p_decoded_video, i_decoded, NULL );
stats_Update( p_input->p->counters.p_lost_pictures, i_lost , NULL);
stats_Update( p_input->p->counters.p_displayed_pictures,
i_displayed, NULL);
vlc_mutex_unlock( &p_input->p->counters.counters_lock );
}
}

Now I could see the number of frames dropped and displayed. Just posted to share and if you could suggest any better place, then that would be great.

At lower CPU frequencies, I could see Displayed Frames > Decoded Frames. Can you please explain this?

[edwardw]

There is already a stats module in VLC...