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Merge branch 'gst-play-step' into 'main'

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gst-play: add frame stepping forward/backward keyboard control

See merge request gstreamer/gstreamer!6192
This commit is contained in:
Andreas Gschossmann 2024-05-03 20:32:26 +00:00
parent 73c64e8182 50c7cf220c
commit 3584dcac0d
1 changed files with 29 additions and 0 deletions
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29
subprojects/gst-plugins-base/tools/gst-play.c
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@ -533,6 +533,10 @@ play_bus_msg (GstBus * bus, GstMessage * msg, gpointer user_data)
} else if (strcmp (key, "space") == 0 ||
strcmp (key, "Space") == 0) {
key = " ";
} else if (strcmp (key, "comma") == 0) {
key = ",";
} else if (strcmp (key, "period") == 0) {
key = ".";
} else if (strcmp (key, "minus") == 0) {
key = "-";
} else if (strcmp (key, "plus") == 0
@ -1103,6 +1107,23 @@ play_set_relative_playback_rate (GstPlay * play, gdouble rate_step,
play_set_playback_rate (play, new_rate);
}
static gboolean
play_frame_step (GstPlay * play, gboolean backward)
{
GstEvent *step;
if ((backward && (play->rate > 0)) || (!backward && (play->rate < 0))) {
play_set_relative_playback_rate (play, 0.0, TRUE);
}
step = gst_event_new_step (GST_FORMAT_BUFFERS, 1, 1.0, TRUE, FALSE);
if (!gst_element_send_event (play->playbin, step))
gst_print ("Failed to step.\n");
return TRUE;
}
static const gchar *
trick_mode_get_description (GstPlayTrickMode mode)
{
@ -1419,6 +1440,8 @@ print_keyboard_help (void)
"m", N_("toggle audio mute on/off")}, {
"+", N_("increase playback rate")}, {
"-", N_("decrease playback rate")}, {
",", N_("step frame backward")}, {
".", N_("step frame forward")}, {
"d", N_("change playback direction")}, {
"t", N_("enable/disable trick modes")}, {
"A/a", N_("change to previous/next audio track")}, {
@ -1531,6 +1554,12 @@ keyboard_cb (const gchar * key_input, gpointer user_data)
case 'm':
play_toggle_audio_mute (play);
break;
case ',':
play_frame_step (play, TRUE);
break;
case '.':
play_frame_step (play, FALSE);
break;
default:
if (strcmp (key_input, GST_PLAY_KB_ARROW_RIGHT) == 0) {
relative_seek (play, +0.08);