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gst-play: Allow switching to previous tracks

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Implement case sensitive key-press handling,
and make 'V', 'A', 'S' switch to the previous
video, audio, or subtitle track. The lower-case
keypress cycles to the next track, as before

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1841>
This commit is contained in:
Jan Schmidt 2022-02-24 01:41:34 +11:00 committed by GStreamer Marge Bot
parent 00f773bd10
commit dde9e4e288
1 changed files with 58 additions and 19 deletions
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77
subprojects/gst-plugins-base/tools/gst-play.c
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@ -501,6 +501,8 @@ play_bus_msg (GstBus * bus, GstMessage * msg, gpointer user_data)
case GST_NAVIGATION_EVENT_KEY_PRESS:
{
const gchar *key;
const gchar *key_input;
gchar key_adjusted[2];
if (gst_navigation_event_parse_key_event (ev, &key)) {
GST_INFO ("Key press: %s", key);
@ -529,7 +531,21 @@ play_bus_msg (GstBus * bus, GstMessage * msg, gpointer user_data)
break;
}
keyboard_cb (key, user_data);
/* In the case of a simple single-char input,
* make it lower or upper as needed, and
* send that instead */
if (key[0] != '\0' && key[1] == '\0') {
if (play->shift_pressed)
key_adjusted[0] = g_ascii_toupper (key[0]);
else
key_adjusted[0] = g_ascii_tolower (key[0]);
key_adjusted[1] = '\0';
key_input = key_adjusted;
} else {
key_input = key;
}
keyboard_cb (key_input, user_data);
}
break;
}
@ -1158,7 +1174,8 @@ play_get_nth_stream_in_collection (GstPlay * play, guint index,
}
static void
play_cycle_track_selection (GstPlay * play, GstPlayTrackType track_type)
play_cycle_track_selection (GstPlay * play, GstPlayTrackType track_type,
gboolean forward)
{
const gchar *prop_cur, *prop_n, *prop_get, *name;
gint cur = -1, n = -1;
@ -1270,19 +1287,34 @@ play_cycle_track_selection (GstPlay * play, GstPlayTrackType track_type)
if (play->is_playbin3) {
if (n > 0) {
if (cur < 0)
cur = 0;
else
cur = (cur + 1) % (n + 1);
if (forward) {
if (cur < 0)
cur = 0;
else
cur = (cur + 1) % (n + 1);
} else {
if (cur <= 0)
cur = n;
else
cur = (cur - 1) % (n + 1);
}
}
} else {
g_object_get (play->playbin, prop_cur, &cur, prop_n, &n, "flags",
&cur_flags, NULL);
if (!(cur_flags & flag))
cur = 0;
else
cur = (cur + 1) % (n + 1);
if (forward) {
if (!(cur_flags & flag))
cur = 0;
else
cur = (cur + 1) % (n + 1);
} else {
if (cur <= 0)
cur = n;
else
cur = (cur - 1) % (n + 1);
}
}
if (n < 1) {
@ -1382,9 +1414,9 @@ print_keyboard_help (void)
"-", N_("decrease playback rate")}, {
"d", N_("change playback direction")}, {
"t", N_("enable/disable trick modes")}, {
"a", N_("change audio track")}, {
"v", N_("change video track")}, {
"s", N_("change subtitle track")}, {
"A/a", N_("change to previous/next audio track")}, {
"V/v", N_("change to previous/next video track")}, {
"S/s", N_("change to previous/next subtitle track")}, {
"0", N_("seek to beginning")}, {
"k", N_("show keyboard shortcuts")},};
/* *INDENT-ON* */
@ -1413,9 +1445,12 @@ keyboard_cb (const gchar * key_input, gpointer user_data)
GstPlay *play = (GstPlay *) user_data;
gchar key = '\0';
/* only want to switch/case on single char, not first char of string */
if (key_input[0] != '\0' && key_input[1] == '\0')
key = g_ascii_tolower (key_input[0]);
/* Switch on the first char for single char inputs,
* otherwise leave key = '\0' to fall through to
* the default case below */
if (key_input[0] != '\0' && key_input[1] == '\0') {
key = key_input[0];
}
switch (key) {
case 'k':
@ -1471,13 +1506,17 @@ keyboard_cb (const gchar * key_input, gpointer user_data)
break;
}
case 'a':
play_cycle_track_selection (play, GST_PLAY_TRACK_TYPE_AUDIO);
case 'A':
play_cycle_track_selection (play, GST_PLAY_TRACK_TYPE_AUDIO, key == 'a');
break;
case 'v':
play_cycle_track_selection (play, GST_PLAY_TRACK_TYPE_VIDEO);
case 'V':
play_cycle_track_selection (play, GST_PLAY_TRACK_TYPE_VIDEO, key == 'v');
break;
case 's':
play_cycle_track_selection (play, GST_PLAY_TRACK_TYPE_SUBTITLE);
case 'S':
play_cycle_track_selection (play, GST_PLAY_TRACK_TYPE_SUBTITLE,
key == 's');
break;
case '0':
play_do_seek (play, 0, play->rate, play->trick_mode);