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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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gst-play: add keyboard shortcut to cycle through trick modes
Make "t" activate trick modes and cycle through the various modes.
This commit is contained in:
Tim-Philipp Müller
parent
a257fcf366
commit
0e9dac0cc7
2 changed files with 121 additions and 28 deletions
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@ -56,6 +56,9 @@ Increase/decrease playback rate
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.B d
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Reverse playback direction
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.TP 8
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.B t
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Cycle through trick modes
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.TP 8
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.B >
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Skip to next item in playlist
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.TP 8
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146
tools/gst-play.c
146
tools/gst-play.c
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@ -2,6 +2,7 @@
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*
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* Copyright (C) 2013-2014 Tim-Philipp Müller <tim centricular net>
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* Copyright (C) 2013 Collabora Ltd.
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* Copyright (C) 2015 Centricular Ltd
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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@ -43,6 +44,16 @@
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GST_DEBUG_CATEGORY (play_debug);
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#define GST_CAT_DEFAULT play_debug
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typedef enum
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{
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GST_PLAY_TRICK_MODE_NONE = 0,
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GST_PLAY_TRICK_MODE_DEFAULT,
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GST_PLAY_TRICK_MODE_DEFAULT_NO_AUDIO,
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GST_PLAY_TRICK_MODE_KEY_UNITS,
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GST_PLAY_TRICK_MODE_KEY_UNITS_NO_AUDIO,
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GST_PLAY_TRICK_MODE_LAST
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} GstPlayTrickMode;
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typedef struct
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{
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gchar **uris;
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@ -66,6 +77,7 @@ typedef struct
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/* configuration */
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gboolean gapless;
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GstPlayTrickMode trick_mode;
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gdouble rate;
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} GstPlay;
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@ -169,6 +181,7 @@ play_new (gchar ** uris, const gchar * audio_sink, const gchar * video_sink,
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play_set_relative_volume (play, initial_volume - 1.0);
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play->rate = 1.0;
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play->trick_mode = GST_PLAY_TRICK_MODE_NONE;
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return play;
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}
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@ -632,9 +645,11 @@ seek_failed:
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}
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}
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static void
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change_rate (GstPlay * play, gdouble rate)
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static gboolean
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play_set_rate_and_trick_mode (GstPlay * play, gdouble rate,
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GstPlayTrickMode mode)
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{
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GstSeekFlags seek_flags;
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GstQuery *query;
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GstEvent *seek;
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gboolean seekable = FALSE;
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@ -643,43 +658,120 @@ change_rate (GstPlay * play, gdouble rate)
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g_return_if_fail (rate != 0);
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if (!gst_element_query_position (play->playbin, GST_FORMAT_TIME, &pos))
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goto seek_failed;
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return FALSE;
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query = gst_query_new_seeking (GST_FORMAT_TIME);
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if (!gst_element_query (play->playbin, query)) {
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gst_query_unref (query);
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goto seek_failed;
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return FALSE;
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}
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gst_query_parse_seeking (query, NULL, &seekable, NULL, NULL);
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gst_query_unref (query);
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if (!seekable)
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goto seek_failed;
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return FALSE;
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seek_flags = GST_SEEK_FLAG_FLUSH;
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switch (mode) {
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case GST_PLAY_TRICK_MODE_DEFAULT:
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seek_flags |= GST_SEEK_FLAG_TRICKMODE;
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break;
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case GST_PLAY_TRICK_MODE_DEFAULT_NO_AUDIO:
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seek_flags |= GST_SEEK_FLAG_TRICKMODE | GST_SEEK_FLAG_TRICKMODE_NO_AUDIO;
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break;
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case GST_PLAY_TRICK_MODE_KEY_UNITS:
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seek_flags |= GST_SEEK_FLAG_TRICKMODE_KEY_UNITS;
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break;
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case GST_PLAY_TRICK_MODE_KEY_UNITS_NO_AUDIO:
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seek_flags |=
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GST_SEEK_FLAG_TRICKMODE_KEY_UNITS | GST_SEEK_FLAG_TRICKMODE_NO_AUDIO;
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break;
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case GST_PLAY_TRICK_MODE_NONE:
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default:
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break;
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}
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if (rate > 0)
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seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
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GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT,
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seek_flags | GST_SEEK_FLAG_KEY_UNIT,
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/* start */ GST_SEEK_TYPE_SET, pos,
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/* stop */ GST_SEEK_TYPE_NONE, 0);
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else
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seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
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GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE,
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seek_flags | GST_SEEK_FLAG_ACCURATE,
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/* start */ GST_SEEK_TYPE_SET, 0,
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/* stop */ GST_SEEK_TYPE_SET, pos);
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if (!gst_element_send_event (play->playbin, seek))
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goto seek_failed;
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return FALSE;
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g_print ("Rate: %.2f \n", rate);
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return;
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play->rate = rate;
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play->trick_mode = mode;
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return TRUE;
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}
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seek_failed:
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{
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static void
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play_set_playback_rate (GstPlay * play, gdouble rate)
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{
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if (play_set_rate_and_trick_mode (play, rate, play->trick_mode)) {
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g_print ("Rate: %.2f \n", rate);
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} else {
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g_print ("\nCould not change playback rate to %.2f.\n", rate);
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}
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}
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static void
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play_set_relative_playback_rate (GstPlay * play, gdouble rate_step,
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gboolean reverse_direction)
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{
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gdouble new_rate = play->rate + rate_step;
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if (reverse_direction)
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new_rate *= -1.0;
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play_set_playback_rate (play, new_rate);
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}
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static const gchar *
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trick_mode_get_description (GstPlayTrickMode mode)
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{
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switch (mode) {
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case GST_PLAY_TRICK_MODE_NONE:
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return "normal playback, trick modes disabled";
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case GST_PLAY_TRICK_MODE_DEFAULT:
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return "trick mode: default";
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case GST_PLAY_TRICK_MODE_DEFAULT_NO_AUDIO:
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return "trick mode: default, no audio";
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case GST_PLAY_TRICK_MODE_KEY_UNITS:
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return "trick mode: key frames only";
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case GST_PLAY_TRICK_MODE_KEY_UNITS_NO_AUDIO:
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return "trick mode: key frames only, no audio";
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default:
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break;
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}
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return "unknown trick mode";
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}
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static void
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play_switch_trick_mode (GstPlay * play)
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{
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GstPlayTrickMode new_mode = ++play->trick_mode;
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const gchar *mode_desc;
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if (new_mode == GST_PLAY_TRICK_MODE_LAST)
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new_mode = GST_PLAY_TRICK_MODE_NONE;
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mode_desc = trick_mode_get_description (new_mode);
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if (play_set_rate_and_trick_mode (play, play->rate, new_mode)) {
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g_print ("Rate: %.2f (%s) \n", play->rate, mode_desc);
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} else {
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g_print ("\nCould not change trick mode to %s.\n", mode_desc);
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}
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}
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static void
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keyboard_cb (const gchar * key_input, gpointer user_data)
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{
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@ -704,31 +796,29 @@ keyboard_cb (const gchar * key_input, gpointer user_data)
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break;
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case '+':
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if (play->rate > -0.2 && play->rate < 0.0)
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play->rate *= -1.0;
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play_set_relative_playback_rate (play, 0.0, TRUE);
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else if (ABS (play->rate) < 2.0)
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play->rate += 0.1;
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play_set_relative_playback_rate (play, 0.1, FALSE);
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else if (ABS (play->rate) < 4.0)
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play->rate += 0.5;
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play_set_relative_playback_rate (play, 0.5, FALSE);
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else
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play->rate += 1.0;
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change_rate (play, play->rate);
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play_set_relative_playback_rate (play, 1.0, FALSE);
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break;
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case '-':
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if (play->rate > 0.0 && play->rate < 0.20) {
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play->rate *= -1.0;
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} else if (ABS (play->rate) <= 2.0)
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play->rate -= 0.1;
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if (play->rate > 0.0 && play->rate < 0.20)
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play_set_relative_playback_rate (play, 0.0, TRUE);
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else if (ABS (play->rate) <= 2.0)
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play_set_relative_playback_rate (play, -0.1, FALSE);
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else if (ABS (play->rate) <= 4.0)
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play->rate -= 0.5;
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play_set_relative_playback_rate (play, -0.5, FALSE);
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else
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play->rate -= 1.0;
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change_rate (play, play->rate);
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play_set_relative_playback_rate (play, -1.0, FALSE);
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break;
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case 'd':
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play->rate *= -1.0;
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change_rate (play, play->rate);
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play_set_relative_playback_rate (play, 0.0, TRUE);
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break;
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case 't':
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play_switch_trick_mode (play);
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break;
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case 27: /* ESC */
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if (key_input[1] == '\0') {
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