plugin API: command_async("show-progress") doesn't work

[guarapicci]

mpv Information

mpv 0.34.1 Copyright © 2000-2021 mpv/MPlayer/mplayer2 projects
 built on UNKNOWN
FFmpeg library versions:
   libavutil       56.70.100
   libavcodec      58.134.100
   libavformat     58.76.100
   libswscale      5.9.100
   libavfilter     7.110.100
   libswresample   3.9.100
FFmpeg version: 4.4.2-0ubuntu0.22.04.1

Other Information

running on Ubuntu 22.04 with KDE Plasma 5.24.

note: the same command works if you pipe it via socket.

Reproduction Steps

• 1: First, make sure you have libmpv headers.
• 2: Save this snippet to "showprogress.c":

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdlib.h>
#include <mpv/client.h>

struct state {
    mpv_handle *mpv;
};

int mpv_open_cplugin(mpv_handle *handle){
    mpv_event *event = mpv_wait_event(handle, -1);
    sleep(2);
    printf("will run show-progress\n");
    const char *cmd_show_progress[2] = {"show-progress", NULL};
    mpv_command_async(handle, 200, cmd_show_progress);
    while (1){
        mpv_event *event = mpv_wait_event(handle, -1);
        int exit = 0;

        // printf("stepping through touchpad state machine\n");

        switch(event->event_id){
            case MPV_EVENT_SHUTDOWN:
                return 0;
            case MPV_EVENT_COMMAND_REPLY:

        }
        // usleep(4);
    }
    return 0;
}

• 3: open a console at the folder and run this :

# install showprogress.so to plugins folder
 gcc -o ~/.config/mpv/scripts/progress.so showprogress.c -shared -fPIC

• 4: on the same console, run mpv $MEDIAFILE, replacing $MEDIAFILE with a path to a playable video.

Expected Behavior

mpv plays file for 2 seconds, then prints will run show progress on console output, then shows HUD with progress bar.

Actual Behavior

mpv plays file for 2 seconds, then prints will run show progress on console output, then continues playing without displaying the HUD.

Log File

output.txt

Sample Files

No response

I carefully read all instruction and confirm that I did the following:

• I tested with the latest mpv version to validate that the issue is not already fixed.
• I provided all required information including system and mpv version.
• I produced the log file with the exact same set of files, parameters, and conditions used in "Reproduction Steps", with the addition of --log-file=output.txt.
• I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
• I attached the full, untruncated log file.
• I attached the backtrace in the case of a crash.

[Dudemanguy]

0.34.1 is outdated and not supported. This was fixed by 5c2051b. You can workaround this by using the osd-auto prefix for the command.