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gst-play: more fine-grained playback rate control

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Use smaller steps for lower rates to allow more
fine-grained control. Handle jump across 0 properly
from both sides (just flip direction where we would
have gone down to 0 instead). Don't artificially
limit rates to +/- 10x. Print new rate.

https://bugzilla.gnome.org/show_bug.cgi?id=745174
This commit is contained in:
Tim-Philipp Müller 2015-02-26 10:57:56 +00:00
parent 0c8967348f
commit b4c45935b7
1 changed files with 21 additions and 4 deletions
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25
tools/gst-play.c
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@ -637,7 +637,7 @@ change_rate (GstPlay * play, gdouble rate)
gboolean seekable = FALSE;
gint64 pos = -1;
g_return_if_fail (rate != 0 && rate >= -10.0 && rate <= 10.0);
g_return_if_fail (rate != 0);
if (!gst_element_query_position (play->playbin, GST_FORMAT_TIME, &pos))
goto seek_failed;
@ -668,11 +668,12 @@ change_rate (GstPlay * play, gdouble rate)
if (!gst_element_send_event (play->playbin, seek))
goto seek_failed;
g_print ("Rate: %.2f \n", rate);
return;
seek_failed:
{
g_print ("\nCould not seek.\n");
g_print ("\nCould not change playback rate to %.2f.\n", rate);
}
}
@ -699,11 +700,27 @@ keyboard_cb (const gchar * key_input, gpointer user_data)
play_prev (play);
break;
case '+':
play->rate += 0.5;
if (play->rate > -0.2 && play->rate < 0.0)
play->rate *= -1.0;
else if (ABS (play->rate) < 2.0)
play->rate += 0.1;
else if (ABS (play->rate) < 4.0)
play->rate += 0.5;
else
play->rate += 1.0;
change_rate (play, play->rate);
break;
case '-':
play->rate -= 0.5;
if (play->rate > 0.0 && play->rate < 0.20) {
play->rate *= -1.0;
} else if (ABS (play->rate) <= 2.0)
play->rate -= 0.1;
else if (ABS (play->rate) <= 4.0)
play->rate -= 0.5;
else
play->rate -= 1.0;
change_rate (play, play->rate);
break;
case 'd':