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tools: gst-play: add shortcuts to switch audio/subtitle/video tracks

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This commit is contained in:
Tim-Philipp Müller 2015-06-09 10:16:34 +01:00
parent 90bbb830d9
commit 6ed7ea73cf
2 changed files with 96 additions and 1 deletions
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9
tools/gst-play-1.0.1
View file

@ -59,6 +59,15 @@ Reverse playback direction
.B t
Cycle through trick modes
.TP 8
.B a
Switch audio track
.TP 8
.B s
Switch subtitle track
.TP 8
.B v
Switch video track
.TP 8
.B >
Skip to next item in playlist
.TP 8

88
tools/gst-play.c
View file

@ -31,6 +31,7 @@
#include <gst/audio/audio.h>
#include <gst/video/video.h>
#include <gst/pbutils/pbutils.h>
#include <gst/tag/tag.h>
#include <gst/math-compat.h>
#include <stdlib.h>
#include <stdio.h>
@ -55,6 +56,14 @@ typedef enum
GST_PLAY_TRICK_MODE_LAST
} GstPlayTrickMode;
typedef enum
{
GST_PLAY_TRACK_TYPE_INVALID = 0,
GST_PLAY_TRACK_TYPE_AUDIO,
GST_PLAY_TRACK_TYPE_VIDEO,
GST_PLAY_TRACK_TYPE_SUBTITLE
} GstPlayTrackType;
typedef struct
{
gchar **uris;
@ -865,6 +874,66 @@ play_switch_trick_mode (GstPlay * play)
}
}
static void
play_cycle_track_selection (GstPlay * play, GstPlayTrackType track_type)
{
const gchar *prop_cur, *prop_n, *prop_get, *name;
gint cur = -1, n = -1;
switch (track_type) {
case GST_PLAY_TRACK_TYPE_AUDIO:
prop_get = "get-audio-tags";
prop_cur = "current-audio";
prop_n = "n-audio";
name = "audio";
break;
case GST_PLAY_TRACK_TYPE_VIDEO:
prop_get = "get-video-tags";
prop_cur = "current-video";
prop_n = "n-video";
name = "video";
break;
case GST_PLAY_TRACK_TYPE_SUBTITLE:
prop_get = "get-text-tags";
prop_cur = "current-text";
prop_n = "n-text";
name = "subtitle";
break;
default:
return;
}
g_object_get (play->playbin, prop_cur, &cur, prop_n, &n, NULL);
if (n < 1) {
g_print ("No %s tracks.\n", name);
} else if (n == 1) {
g_print ("No other %s tracks to switch to.\n", name);
} else {
gchar *lcode = NULL, *lname = NULL;
const gchar *lang = NULL;
GstTagList *tags = NULL;
cur = (cur + 1) % n;
g_signal_emit_by_name (play->playbin, prop_get, cur, &tags);
if (tags != NULL) {
if (gst_tag_list_get_string (tags, GST_TAG_LANGUAGE_CODE, &lcode))
lang = gst_tag_get_language_name (lcode);
else if (gst_tag_list_get_string (tags, GST_TAG_LANGUAGE_NAME, &lname))
lang = lname;
gst_tag_list_unref (tags);
}
if (lang != NULL)
g_print ("Switching to %s track %d of %d (%s).\n", name, cur + 1, n,
lang);
else
g_print ("Switching to %s track %d of %d.\n", name, cur + 1, n);
g_object_set (play->playbin, prop_cur, cur, NULL);
g_free (lcode);
g_free (lname);
}
}
static void
print_keyboard_help (void)
{
@ -886,6 +955,9 @@ 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")}, {
"k", N_("show keyboard shortcuts")},};
guint i, chars_to_pad, desc_len, max_desc_len = 0;
@ -910,8 +982,13 @@ static void
keyboard_cb (const gchar * key_input, gpointer user_data)
{
GstPlay *play = (GstPlay *) user_data;
gchar key = '\0';
switch (g_ascii_tolower (key_input[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 (key) {
case 'k':
print_keyboard_help ();
break;
@ -962,6 +1039,15 @@ keyboard_cb (const gchar * key_input, gpointer user_data)
g_main_loop_quit (play->loop);
break;
}
case 'a':
play_cycle_track_selection (play, GST_PLAY_TRACK_TYPE_AUDIO);
break;
case 'v':
play_cycle_track_selection (play, GST_PLAY_TRACK_TYPE_VIDEO);
break;
case 's':
play_cycle_track_selection (play, GST_PLAY_TRACK_TYPE_SUBTITLE);
break;
/* fall through */
default:
if (strcmp (key_input, GST_PLAY_KB_ARROW_RIGHT) == 0) {