gst-play.c 35.1 KB
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/* GStreamer command line playback testing utility
 *
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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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 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

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#include <locale.h>

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#include <gst/gst.h>
#include <gst/gst-i18n-app.h>
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#include <gst/audio/audio.h>
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#include <gst/video/video.h>
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#include <gst/pbutils/pbutils.h>
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#include <gst/tag/tag.h>
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#include <gst/math-compat.h>
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#include <stdlib.h>
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#include <stdio.h>
#include <string.h>

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#include <glib/gprintf.h>

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#include "gst-play-kb.h"
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#define VOLUME_STEPS 20

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GST_DEBUG_CATEGORY (play_debug);
#define GST_CAT_DEFAULT play_debug

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typedef enum
{
  GST_PLAY_TRICK_MODE_NONE = 0,
  GST_PLAY_TRICK_MODE_DEFAULT,
  GST_PLAY_TRICK_MODE_DEFAULT_NO_AUDIO,
  GST_PLAY_TRICK_MODE_KEY_UNITS,
  GST_PLAY_TRICK_MODE_KEY_UNITS_NO_AUDIO,
  GST_PLAY_TRICK_MODE_LAST
} GstPlayTrickMode;

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typedef enum
{
  GST_PLAY_TRACK_TYPE_INVALID = 0,
  GST_PLAY_TRACK_TYPE_AUDIO,
  GST_PLAY_TRACK_TYPE_VIDEO,
  GST_PLAY_TRACK_TYPE_SUBTITLE
} GstPlayTrackType;

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typedef struct
{
  gchar **uris;
  guint num_uris;
  gint cur_idx;

  GstElement *playbin;

  GMainLoop *loop;
  guint bus_watch;
  guint timeout;

  /* missing plugin messages */
  GList *missing;

  gboolean buffering;
  gboolean is_live;
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  GstState desired_state;       /* as per user interaction, PAUSED or PLAYING */

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  gulong deep_notify_id;

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  /* configuration */
  gboolean gapless;
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  GstPlayTrickMode trick_mode;
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  gdouble rate;
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} GstPlay;

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static gboolean quiet = FALSE;

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static gboolean play_bus_msg (GstBus * bus, GstMessage * msg, gpointer data);
static gboolean play_next (GstPlay * play);
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static gboolean play_prev (GstPlay * play);
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static gboolean play_timeout (gpointer user_data);
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static void play_about_to_finish (GstElement * playbin, gpointer user_data);
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static void play_reset (GstPlay * play);
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static void play_set_relative_volume (GstPlay * play, gdouble volume_step);
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static gboolean play_do_seek (GstPlay * play, gint64 pos, gdouble rate,
    GstPlayTrickMode mode);
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/* *INDENT-OFF* */
static void gst_play_printf (const gchar * format, ...) G_GNUC_PRINTF (1, 2);
/* *INDENT-ON* */

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static void keyboard_cb (const gchar * key_input, gpointer user_data);
static void relative_seek (GstPlay * play, gdouble percent);

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static void
gst_play_printf (const gchar * format, ...)
{
  gchar *str = NULL;
  va_list args;
  int len;

  if (quiet)
    return;

  va_start (args, format);

  len = g_vasprintf (&str, format, args);

  va_end (args);

  if (len > 0 && str != NULL)
    g_print ("%s", str);

  g_free (str);
}

#define g_print gst_play_printf

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static GstPlay *
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play_new (gchar ** uris, const gchar * audio_sink, const gchar * video_sink,
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    gboolean gapless, gdouble initial_volume, gboolean verbose,
    const gchar * flags_string)
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{
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  GstElement *sink, *playbin;
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  GstPlay *play;

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  playbin = gst_element_factory_make ("playbin", "playbin");
  if (playbin == NULL)
    return NULL;

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  play = g_new0 (GstPlay, 1);

  play->uris = uris;
  play->num_uris = g_strv_length (uris);
  play->cur_idx = -1;

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  play->playbin = playbin;
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  if (audio_sink != NULL) {
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    if (strchr (audio_sink, ' ') != NULL)
      sink = gst_parse_bin_from_description (audio_sink, TRUE, NULL);
    else
      sink = gst_element_factory_make (audio_sink, NULL);

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    if (sink != NULL)
      g_object_set (play->playbin, "audio-sink", sink, NULL);
    else
      g_warning ("Couldn't create specified audio sink '%s'", audio_sink);
  }
  if (video_sink != NULL) {
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    if (strchr (video_sink, ' ') != NULL)
      sink = gst_parse_bin_from_description (video_sink, TRUE, NULL);
    else
      sink = gst_element_factory_make (video_sink, NULL);

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    if (sink != NULL)
      g_object_set (play->playbin, "video-sink", sink, NULL);
    else
      g_warning ("Couldn't create specified video sink '%s'", video_sink);
  }

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  if (flags_string != NULL) {
    GParamSpec *pspec;
    GValue val = { 0, };

    pspec =
        g_object_class_find_property (G_OBJECT_GET_CLASS (playbin), "flags");
    g_value_init (&val, pspec->value_type);
    if (gst_value_deserialize (&val, flags_string))
      g_object_set_property (G_OBJECT (play->playbin), "flags", &val);
    else
      g_printerr ("Couldn't convert '%s' to playbin flags!\n", flags_string);
    g_value_unset (&val);
  }
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  if (verbose) {
    play->deep_notify_id = g_signal_connect (play->playbin, "deep-notify",
        G_CALLBACK (gst_object_default_deep_notify), NULL);
  }

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  play->loop = g_main_loop_new (NULL, FALSE);

  play->bus_watch = gst_bus_add_watch (GST_ELEMENT_BUS (play->playbin),
      play_bus_msg, play);

  /* FIXME: make configurable incl. 0 for disable */
  play->timeout = g_timeout_add (100, play_timeout, play);

  play->missing = NULL;
  play->buffering = FALSE;
  play->is_live = FALSE;

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  play->desired_state = GST_STATE_PLAYING;

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  play->gapless = gapless;
  if (gapless) {
    g_signal_connect (play->playbin, "about-to-finish",
        G_CALLBACK (play_about_to_finish), play);
  }

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  if (initial_volume != -1)
    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;
}

static void
play_free (GstPlay * play)
{
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  /* No need to see all those pad caps going to NULL etc., it's just noise */
  if (play->deep_notify_id != 0)
    g_signal_handler_disconnect (play->playbin, play->deep_notify_id);

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  play_reset (play);

  gst_element_set_state (play->playbin, GST_STATE_NULL);
  gst_object_unref (play->playbin);

  g_source_remove (play->bus_watch);
  g_source_remove (play->timeout);
  g_main_loop_unref (play->loop);

  g_strfreev (play->uris);
  g_free (play);
}

/* reset for new file/stream */
static void
play_reset (GstPlay * play)
{
  g_list_foreach (play->missing, (GFunc) gst_message_unref, NULL);
  play->missing = NULL;

  play->buffering = FALSE;
  play->is_live = FALSE;
}

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static void
play_set_relative_volume (GstPlay * play, gdouble volume_step)
{
  gdouble volume;

  volume = gst_stream_volume_get_volume (GST_STREAM_VOLUME (play->playbin),
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      GST_STREAM_VOLUME_FORMAT_CUBIC);
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  volume = round ((volume + volume_step) * VOLUME_STEPS) / VOLUME_STEPS;
  volume = CLAMP (volume, 0.0, 10.0);

  gst_stream_volume_set_volume (GST_STREAM_VOLUME (play->playbin),
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      GST_STREAM_VOLUME_FORMAT_CUBIC, volume);
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  g_print (_("Volume: %.0f%%"), volume * 100);
  g_print ("                  \n");
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}

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/* returns TRUE if something was installed and we should restart playback */
static gboolean
play_install_missing_plugins (GstPlay * play)
{
  /* FIXME: implement: try to install any missing plugins we haven't
   * tried to install before */
  return FALSE;
}

static gboolean
play_bus_msg (GstBus * bus, GstMessage * msg, gpointer user_data)
{
  GstPlay *play = user_data;

  switch (GST_MESSAGE_TYPE (msg)) {
    case GST_MESSAGE_ASYNC_DONE:
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      /* dump graph on preroll */
      GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (play->playbin),
          GST_DEBUG_GRAPH_SHOW_ALL, "gst-play.async-done");

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      g_print ("Prerolled.\r");
      if (play->missing != NULL && play_install_missing_plugins (play)) {
        g_print ("New plugins installed, trying again...\n");
        --play->cur_idx;
        play_next (play);
      }
      break;
    case GST_MESSAGE_BUFFERING:{
      gint percent;

      if (!play->buffering)
        g_print ("\n");

      gst_message_parse_buffering (msg, &percent);
      g_print ("%s %d%%  \r", _("Buffering..."), percent);

      if (percent == 100) {
        /* a 100% message means buffering is done */
        if (play->buffering) {
          play->buffering = FALSE;
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          /* no state management needed for live pipelines */
          if (!play->is_live)
            gst_element_set_state (play->playbin, play->desired_state);
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        }
      } else {
        /* buffering... */
        if (!play->buffering) {
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          if (!play->is_live)
            gst_element_set_state (play->playbin, GST_STATE_PAUSED);
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          play->buffering = TRUE;
        }
      }
      break;
    }
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    case GST_MESSAGE_CLOCK_LOST:{
      g_print (_("Clock lost, selecting a new one\n"));
      gst_element_set_state (play->playbin, GST_STATE_PAUSED);
      gst_element_set_state (play->playbin, GST_STATE_PLAYING);
      break;
    }
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    case GST_MESSAGE_LATENCY:
      g_print ("Redistribute latency...\n");
      gst_bin_recalculate_latency (GST_BIN (play->playbin));
      break;
    case GST_MESSAGE_REQUEST_STATE:{
      GstState state;
      gchar *name;

      name = gst_object_get_path_string (GST_MESSAGE_SRC (msg));

      gst_message_parse_request_state (msg, &state);

      g_print ("Setting state to %s as requested by %s...\n",
          gst_element_state_get_name (state), name);

      gst_element_set_state (play->playbin, state);
      g_free (name);
      break;
    }
    case GST_MESSAGE_EOS:
      /* print final position at end */
      play_timeout (play);
      g_print ("\n");
      /* and switch to next item in list */
      if (!play_next (play)) {
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        g_print ("%s\n", _("Reached end of play list."));
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        g_main_loop_quit (play->loop);
      }
      break;
    case GST_MESSAGE_WARNING:{
      GError *err;
      gchar *dbg = NULL;

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      /* dump graph on warning */
      GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (play->playbin),
          GST_DEBUG_GRAPH_SHOW_ALL, "gst-play.warning");

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      gst_message_parse_warning (msg, &err, &dbg);
      g_printerr ("WARNING %s\n", err->message);
      if (dbg != NULL)
        g_printerr ("WARNING debug information: %s\n", dbg);
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      g_clear_error (&err);
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      g_free (dbg);
      break;
    }
    case GST_MESSAGE_ERROR:{
      GError *err;
      gchar *dbg;

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      /* dump graph on error */
      GST_DEBUG_BIN_TO_DOT_FILE_WITH_TS (GST_BIN (play->playbin),
          GST_DEBUG_GRAPH_SHOW_ALL, "gst-play.error");

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      gst_message_parse_error (msg, &err, &dbg);
      g_printerr ("ERROR %s for %s\n", err->message, play->uris[play->cur_idx]);
      if (dbg != NULL)
        g_printerr ("ERROR debug information: %s\n", dbg);
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      g_clear_error (&err);
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      g_free (dbg);

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      /* flush any other error messages from the bus and clean up */
      gst_element_set_state (play->playbin, GST_STATE_NULL);

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      if (play->missing != NULL && play_install_missing_plugins (play)) {
        g_print ("New plugins installed, trying again...\n");
        --play->cur_idx;
        play_next (play);
        break;
      }
      /* try next item in list then */
      if (!play_next (play)) {
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        g_print ("%s\n", _("Reached end of play list."));
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        g_main_loop_quit (play->loop);
      }
      break;
    }
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    case GST_MESSAGE_ELEMENT:
    {
      GstNavigationMessageType mtype = gst_navigation_message_get_type (msg);
      if (mtype == GST_NAVIGATION_MESSAGE_EVENT) {
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        GstEvent *ev = NULL;
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        if (gst_navigation_message_parse_event (msg, &ev)) {
          GstNavigationEventType e_type = gst_navigation_event_get_type (ev);
          switch (e_type) {
            case GST_NAVIGATION_EVENT_KEY_PRESS:
            {
              const gchar *key;
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              if (gst_navigation_event_parse_key_event (ev, &key)) {
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                GST_INFO ("Key press: %s", key);

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                if (strcmp (key, "Left") == 0)
                  key = GST_PLAY_KB_ARROW_LEFT;
                else if (strcmp (key, "Right") == 0)
                  key = GST_PLAY_KB_ARROW_RIGHT;
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                else if (strcmp (key, "Up") == 0)
                  key = GST_PLAY_KB_ARROW_UP;
                else if (strcmp (key, "Down") == 0)
                  key = GST_PLAY_KB_ARROW_DOWN;
                else if (strcmp (key, "space") == 0)
                  key = " ";
                else if (strlen (key) > 1)
                  break;

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                keyboard_cb (key, user_data);
              }
              break;
            }
            case GST_NAVIGATION_EVENT_MOUSE_BUTTON_PRESS:
            {
              gint button;
              if (gst_navigation_event_parse_mouse_button_event (ev, &button,
                      NULL, NULL)) {
                if (button == 4) {
                  /* wheel up */
                  relative_seek (play, +0.08);
                } else if (button == 5) {
                  /* wheel down */
                  relative_seek (play, -0.01);
                }
              }
              break;
            }
            default:
              break;
          }
        }
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        if (ev)
          gst_event_unref (ev);
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      }
      break;
    }
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    default:
      if (gst_is_missing_plugin_message (msg)) {
        gchar *desc;

        desc = gst_missing_plugin_message_get_description (msg);
        g_print ("Missing plugin: %s\n", desc);
        g_free (desc);
        play->missing = g_list_append (play->missing, gst_message_ref (msg));
      }
      break;
  }

  return TRUE;
}

static gboolean
play_timeout (gpointer user_data)
{
  GstPlay *play = user_data;
  gint64 pos = -1, dur = -1;
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  const gchar *paused = _("Paused");
  gchar *status;
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  if (play->buffering)
    return TRUE;

  gst_element_query_position (play->playbin, GST_FORMAT_TIME, &pos);
  gst_element_query_duration (play->playbin, GST_FORMAT_TIME, &dur);

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  if (play->desired_state == GST_STATE_PAUSED) {
    status = (gchar *) paused;
  } else {
    gint len = g_utf8_strlen (paused, -1);
    status = g_newa (gchar, len + 1);
    memset (status, ' ', len);
    status[len] = '\0';
  }
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  if (pos >= 0 && dur > 0) {
    gchar dstr[32], pstr[32];

    /* FIXME: pretty print in nicer format */
    g_snprintf (pstr, 32, "%" GST_TIME_FORMAT, GST_TIME_ARGS (pos));
    pstr[9] = '\0';
    g_snprintf (dstr, 32, "%" GST_TIME_FORMAT, GST_TIME_ARGS (dur));
    dstr[9] = '\0';
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    g_print ("%s / %s %s\r", pstr, dstr, status);
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  }

  return TRUE;
}

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static gchar *
play_uri_get_display_name (GstPlay * play, const gchar * uri)
{
  gchar *loc;

  if (gst_uri_has_protocol (uri, "file")) {
    loc = g_filename_from_uri (uri, NULL, NULL);
  } else if (gst_uri_has_protocol (uri, "pushfile")) {
    loc = g_filename_from_uri (uri + 4, NULL, NULL);
  } else {
    loc = g_strdup (uri);
  }

  /* Maybe additionally use glib's filename to display name function */
  return loc;
}

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static void
play_uri (GstPlay * play, const gchar * next_uri)
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{
  gchar *loc;

  gst_element_set_state (play->playbin, GST_STATE_READY);
  play_reset (play);

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  loc = play_uri_get_display_name (play, next_uri);
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  g_print (_("Now playing %s\n"), loc);
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  g_free (loc);

  g_object_set (play->playbin, "uri", next_uri, NULL);

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  switch (gst_element_set_state (play->playbin, GST_STATE_PAUSED)) {
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    case GST_STATE_CHANGE_FAILURE:
      /* ignore, we should get an error message posted on the bus */
      break;
    case GST_STATE_CHANGE_NO_PREROLL:
      g_print ("Pipeline is live.\n");
      play->is_live = TRUE;
      break;
    case GST_STATE_CHANGE_ASYNC:
      g_print ("Prerolling...\r");
      break;
    default:
      break;
  }
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  if (play->desired_state != GST_STATE_PAUSED)
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    gst_element_set_state (play->playbin, play->desired_state);
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}

/* returns FALSE if we have reached the end of the playlist */
static gboolean
play_next (GstPlay * play)
{
  if ((play->cur_idx + 1) >= play->num_uris)
    return FALSE;
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  play_uri (play, play->uris[++play->cur_idx]);
  return TRUE;
}

/* returns FALSE if we have reached the beginning of the playlist */
static gboolean
play_prev (GstPlay * play)
{
  if (play->cur_idx == 0 || play->num_uris <= 1)
    return FALSE;

  play_uri (play, play->uris[--play->cur_idx]);
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  return TRUE;
}

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static void
play_about_to_finish (GstElement * playbin, gpointer user_data)
{
  GstPlay *play = user_data;
  const gchar *next_uri;
  gchar *loc;
  guint next_idx;

  if (!play->gapless)
    return;

  next_idx = play->cur_idx + 1;
  if (next_idx >= play->num_uris)
    return;

  next_uri = play->uris[next_idx];
  loc = play_uri_get_display_name (play, next_uri);
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  g_print (_("About to finish, preparing next title: %s"), loc);
  g_print ("\n");
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  g_free (loc);

  g_object_set (play->playbin, "uri", next_uri, NULL);
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  play->cur_idx = next_idx;
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}

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static void
do_play (GstPlay * play)
{
  gint i;

  /* dump playlist */
  for (i = 0; i < play->num_uris; ++i)
    GST_INFO ("%4u : %s", i, play->uris[i]);

  if (!play_next (play))
    return;

  g_main_loop_run (play->loop);
}

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static gint
compare (gconstpointer a, gconstpointer b)
{
  gchar *a1, *b1;
  gint ret;

  a1 = g_utf8_collate_key_for_filename ((gchar *) a, -1);
  b1 = g_utf8_collate_key_for_filename ((gchar *) b, -1);
  ret = strcmp (a1, b1);
  g_free (a1);
  g_free (b1);

  return ret;
}

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static void
add_to_playlist (GPtrArray * playlist, const gchar * filename)
{
  GDir *dir;
  gchar *uri;

  if (gst_uri_is_valid (filename)) {
    g_ptr_array_add (playlist, g_strdup (filename));
    return;
  }

  if ((dir = g_dir_open (filename, 0, NULL))) {
    const gchar *entry;
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    GList *l, *files = NULL;
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    while ((entry = g_dir_read_name (dir))) {
      gchar *path;

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      path = g_build_filename (filename, entry, NULL);
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      files = g_list_insert_sorted (files, path, compare);
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    }

    g_dir_close (dir);
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    for (l = files; l != NULL; l = l->next) {
      gchar *path = (gchar *) l->data;

      add_to_playlist (playlist, path);
      g_free (path);
    }
    g_list_free (files);
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    return;
  }

  uri = gst_filename_to_uri (filename, NULL);
  if (uri != NULL)
    g_ptr_array_add (playlist, uri);
  else
    g_warning ("Could not make URI out of filename '%s'", filename);
}

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static void
shuffle_uris (gchar ** uris, guint num)
{
  gchar *tmp;
  guint i, j;

  if (num < 2)
    return;

  for (i = 0; i < num; i++) {
    /* gets equally distributed random number in 0..num-1 [0;num[ */
    j = g_random_int_range (0, num);
    tmp = uris[j];
    uris[j] = uris[i];
    uris[i] = tmp;
  }
}

711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731
static void
restore_terminal (void)
{
  gst_play_kb_set_key_handler (NULL, NULL);
}

static void
toggle_paused (GstPlay * play)
{
  if (play->desired_state == GST_STATE_PLAYING)
    play->desired_state = GST_STATE_PAUSED;
  else
    play->desired_state = GST_STATE_PLAYING;

  if (!play->buffering) {
    gst_element_set_state (play->playbin, play->desired_state);
  } else if (play->desired_state == GST_STATE_PLAYING) {
    g_print ("\nWill play as soon as buffering finishes)\n");
  }
}

732 733 734 735 736
static void
relative_seek (GstPlay * play, gdouble percent)
{
  GstQuery *query;
  gboolean seekable = FALSE;
737
  gint64 dur = -1, pos = -1, step;
738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755

  g_return_if_fail (percent >= -1.0 && percent <= 1.0);

  if (!gst_element_query_position (play->playbin, GST_FORMAT_TIME, &pos))
    goto seek_failed;

  query = gst_query_new_seeking (GST_FORMAT_TIME);
  if (!gst_element_query (play->playbin, query)) {
    gst_query_unref (query);
    goto seek_failed;
  }

  gst_query_parse_seeking (query, NULL, &seekable, NULL, &dur);
  gst_query_unref (query);

  if (!seekable || dur <= 0)
    goto seek_failed;

756 757 758 759 760
  step = dur * percent;
  if (ABS (step) < GST_SECOND)
    step = (percent < 0) ? -GST_SECOND : GST_SECOND;

  pos = pos + step;
761 762
  if (pos > dur) {
    if (!play_next (play)) {
763
      g_print ("\n%s\n", _("Reached end of play list."));
764 765 766 767 768
      g_main_loop_quit (play->loop);
    }
  } else {
    if (pos < 0)
      pos = 0;
769 770

    play_do_seek (play, pos, play->rate, play->trick_mode);
771 772 773 774 775 776 777 778 779 780
  }

  return;

seek_failed:
  {
    g_print ("\nCould not seek.\n");
  }
}

781 782 783
static gboolean
play_set_rate_and_trick_mode (GstPlay * play, gdouble rate,
    GstPlayTrickMode mode)
784 785 786
{
  gint64 pos = -1;

787
  g_return_val_if_fail (rate != 0, FALSE);
788 789

  if (!gst_element_query_position (play->playbin, GST_FORMAT_TIME, &pos))
790
    return FALSE;
791

792 793 794 795 796 797 798 799 800 801 802
  return play_do_seek (play, pos, rate, mode);
}

static gboolean
play_do_seek (GstPlay * play, gint64 pos, gdouble rate, GstPlayTrickMode mode)
{
  GstSeekFlags seek_flags;
  GstQuery *query;
  GstEvent *seek;
  gboolean seekable = FALSE;

803 804 805
  query = gst_query_new_seeking (GST_FORMAT_TIME);
  if (!gst_element_query (play->playbin, query)) {
    gst_query_unref (query);
806
    return FALSE;
807 808 809 810 811 812
  }

  gst_query_parse_seeking (query, NULL, &seekable, NULL, NULL);
  gst_query_unref (query);

  if (!seekable)
813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834
    return FALSE;

  seek_flags = GST_SEEK_FLAG_FLUSH;

  switch (mode) {
    case GST_PLAY_TRICK_MODE_DEFAULT:
      seek_flags |= GST_SEEK_FLAG_TRICKMODE;
      break;
    case GST_PLAY_TRICK_MODE_DEFAULT_NO_AUDIO:
      seek_flags |= GST_SEEK_FLAG_TRICKMODE | GST_SEEK_FLAG_TRICKMODE_NO_AUDIO;
      break;
    case GST_PLAY_TRICK_MODE_KEY_UNITS:
      seek_flags |= GST_SEEK_FLAG_TRICKMODE_KEY_UNITS;
      break;
    case GST_PLAY_TRICK_MODE_KEY_UNITS_NO_AUDIO:
      seek_flags |=
          GST_SEEK_FLAG_TRICKMODE_KEY_UNITS | GST_SEEK_FLAG_TRICKMODE_NO_AUDIO;
      break;
    case GST_PLAY_TRICK_MODE_NONE:
    default:
      break;
  }
835

836
  if (rate >= 0)
837
    seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
838
        seek_flags | GST_SEEK_FLAG_ACCURATE,
839
        /* start */ GST_SEEK_TYPE_SET, pos,
840
        /* stop */ GST_SEEK_TYPE_SET, GST_CLOCK_TIME_NONE);
841 842
  else
    seek = gst_event_new_seek (rate, GST_FORMAT_TIME,
843
        seek_flags | GST_SEEK_FLAG_ACCURATE,
844 845 846 847
        /* start */ GST_SEEK_TYPE_SET, 0,
        /* stop */ GST_SEEK_TYPE_SET, pos);

  if (!gst_element_send_event (play->playbin, seek))
848
    return FALSE;
849

850 851 852 853
  play->rate = rate;
  play->trick_mode = mode;
  return TRUE;
}
854

855 856 857 858
static void
play_set_playback_rate (GstPlay * play, gdouble rate)
{
  if (play_set_rate_and_trick_mode (play, rate, play->trick_mode)) {
859 860
    g_print (_("Playback rate: %.2f"), rate);
    g_print ("                               \n");
861
  } else {
862 863 864
    g_print ("\n");
    g_print (_("Could not change playback rate to %.2f"), rate);
    g_print (".\n");
865 866 867
  }
}

868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917
static void
play_set_relative_playback_rate (GstPlay * play, gdouble rate_step,
    gboolean reverse_direction)
{
  gdouble new_rate = play->rate + rate_step;

  if (reverse_direction)
    new_rate *= -1.0;

  play_set_playback_rate (play, new_rate);
}

static const gchar *
trick_mode_get_description (GstPlayTrickMode mode)
{
  switch (mode) {
    case GST_PLAY_TRICK_MODE_NONE:
      return "normal playback, trick modes disabled";
    case GST_PLAY_TRICK_MODE_DEFAULT:
      return "trick mode: default";
    case GST_PLAY_TRICK_MODE_DEFAULT_NO_AUDIO:
      return "trick mode: default, no audio";
    case GST_PLAY_TRICK_MODE_KEY_UNITS:
      return "trick mode: key frames only";
    case GST_PLAY_TRICK_MODE_KEY_UNITS_NO_AUDIO:
      return "trick mode: key frames only, no audio";
    default:
      break;
  }
  return "unknown trick mode";
}

static void
play_switch_trick_mode (GstPlay * play)
{
  GstPlayTrickMode new_mode = ++play->trick_mode;
  const gchar *mode_desc;

  if (new_mode == GST_PLAY_TRICK_MODE_LAST)
    new_mode = GST_PLAY_TRICK_MODE_NONE;

  mode_desc = trick_mode_get_description (new_mode);

  if (play_set_rate_and_trick_mode (play, play->rate, new_mode)) {
    g_print ("Rate: %.2f (%s)                      \n", play->rate, mode_desc);
  } else {
    g_print ("\nCould not change trick mode to %s.\n", mode_desc);
  }
}

918 919 920 921 922
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;
923
  guint flag, cur_flags;
924 925 926 927 928 929 930

  switch (track_type) {
    case GST_PLAY_TRACK_TYPE_AUDIO:
      prop_get = "get-audio-tags";
      prop_cur = "current-audio";
      prop_n = "n-audio";
      name = "audio";
931
      flag = 0x2;
932 933 934 935 936 937
      break;
    case GST_PLAY_TRACK_TYPE_VIDEO:
      prop_get = "get-video-tags";
      prop_cur = "current-video";
      prop_n = "n-video";
      name = "video";
938
      flag = 0x1;
939 940 941 942 943 944
      break;
    case GST_PLAY_TRACK_TYPE_SUBTITLE:
      prop_get = "get-text-tags";
      prop_cur = "current-text";
      prop_n = "n-text";
      name = "subtitle";
945
      flag = 0x4;
946 947 948 949 950
      break;
    default:
      return;
  }

951 952
  g_object_get (play->playbin, prop_cur, &cur, prop_n, &n, "flags", &cur_flags,
      NULL);
953 954 955 956 957 958 959 960

  if (n < 1) {
    g_print ("No %s tracks.\n", name);
  } else {
    gchar *lcode = NULL, *lname = NULL;
    const gchar *lang = NULL;
    GstTagList *tags = NULL;

961 962
    if (!(cur_flags & flag))
      cur = 0;
963
    else
964 965
      cur = (cur + 1) % (n + 1);

966
    if (cur >= n && track_type != GST_PLAY_TRACK_TYPE_VIDEO) {
967 968 969 970 971 972 973
      cur = -1;
      g_print ("Disabling %s.           \n", name);
      if (cur_flags & flag) {
        cur_flags &= ~flag;
        g_object_set (play->playbin, "flags", cur_flags, NULL);
      }
    } else {
974 975 976 977
      /* For video we only want to switch between streams, not disable it altogether */
      if (cur >= n)
        cur = 0;
      if (!(cur_flags & flag) && track_type != GST_PLAY_TRACK_TYPE_VIDEO) {
978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994
        cur_flags |= flag;
        g_object_set (play->playbin, "flags", cur_flags, NULL);
      }
      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);
    }
995 996 997 998 999 1000
    g_object_set (play->playbin, prop_cur, cur, NULL);
    g_free (lcode);
    g_free (lname);
  }
}

1001 1002 1003
static void
print_keyboard_help (void)
{
1004 1005 1006 1007 1008 1009 1010 1011
  static struct
  {
    const gchar *key_desc;
    const gchar *key_help;
  } key_controls[] = {
    {
    N_("space"), N_("pause/unpause")}, {
    N_("q or ESC"), N_("quit")}, {
1012 1013
    N_("> or n"), N_("play next")}, {
    N_("< or b"), N_("play previous")}, {
1014 1015 1016 1017 1018 1019 1020 1021
    "\342\206\222", N_("seek forward")}, {
    "\342\206\220", N_("seek backward")}, {
    "\342\206\221", N_("volume up")}, {
    "\342\206\223", N_("volume down")}, {
    "+", N_("increase playback rate")}, {
    "-", N_("decrease playback rate")}, {
    "d", N_("change playback direction")}, {
    "t", N_("enable/disable trick modes")}, {
1022 1023 1024
    "a", N_("change audio track")}, {
    "v", N_("change video track")}, {
    "s", N_("change subtitle track")}, {
1025
    "0", N_("seek to beginning")}, {
1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043
  "k", N_("show keyboard shortcuts")},};
  guint i, chars_to_pad, desc_len, max_desc_len = 0;

  g_print ("\n\n%s\n\n", _("Interactive mode - keyboard controls:"));

  for (i = 0; i < G_N_ELEMENTS (key_controls); ++i) {
    desc_len = g_utf8_strlen (key_controls[i].key_desc, -1);
    max_desc_len = MAX (max_desc_len, desc_len);
  }
  ++max_desc_len;

  for (i = 0; i < G_N_ELEMENTS (key_controls); ++i) {
    chars_to_pad = max_desc_len - g_utf8_strlen (key_controls[i].key_desc, -1);
    g_print ("\t%s", key_controls[i].key_desc);
    g_print ("%-*s: ", chars_to_pad, "");
    g_print ("%s\n", key_controls[i].key_help);
  }
  g_print ("\n");
1044 1045
}

1046 1047 1048 1049
static void
keyboard_cb (const gchar * key_input, gpointer user_data)
{
  GstPlay *play = (GstPlay *) user_data;
1050 1051 1052 1053 1054
  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]);
1055

1056
  switch (key) {
1057 1058 1059
    case 'k':
      print_keyboard_help ();
      break;
1060 1061 1062
    case ' ':
      toggle_paused (play);
      break;
1063 1064 1065 1066
    case 'q':
    case 'Q':
      g_main_loop_quit (play->loop);
      break;
1067
    case 'n':
1068 1069
    case '>':
      if (!play_next (play)) {
1070
        g_print ("\n%s\n", _("Reached end of play list."));
1071 1072 1073
        g_main_loop_quit (play->loop);
      }
      break;
1074
    case 'b':
1075 1076 1077
    case '<':
      play_prev (play);
      break;
1078
    case '+':
1079
      if (play->rate > -0.2 && play->rate < 0.0)
1080
        play_set_relative_playback_rate (play, 0.0, TRUE);
1081
      else if (ABS (play->rate) < 2.0)
1082
        play_set_relative_playback_rate (play, 0.1, FALSE);
1083
      else if (ABS (play->rate) < 4.0)
1084
        play_set_relative_playback_rate (play, 0.5, FALSE);
1085
      else
1086
        play_set_relative_playback_rate (play, 1.0, FALSE);
1087 1088
      break;
    case '-':
1089 1090 1091 1092
      if (play->rate > 0.0 && play->rate < 0.20)
        play_set_relative_playback_rate (play, 0.0, TRUE);
      else if (ABS (play->rate) <= 2.0)
        play_set_relative_playback_rate (play, -0.1, FALSE);
1093
      else if (ABS (play->rate) <= 4.0)
1094
        play_set_relative_playback_rate (play, -0.5, FALSE);
1095
      else
1096
        play_set_relative_playback_rate (play, -1.0, FALSE);
1097 1098
      break;
    case 'd':
1099 1100 1101 1102
      play_set_relative_playback_rate (play, 0.0, TRUE);
      break;
    case 't':
      play_switch_trick_mode (play);
1103
      break;
1104
    case 27:                   /* ESC */
1105 1106 1107 1108
      if (key_input[1] == '\0') {
        g_main_loop_quit (play->loop);
        break;
      }
1109 1110 1111 1112 1113 1114 1115 1116 1117
    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;
1118 1119 1120
    case '0':
      play_do_seek (play, 0, play->rate, play->trick_mode);
      break;
1121
    default:
1122 1123 1124 1125
      if (strcmp (key_input, GST_PLAY_KB_ARROW_RIGHT) == 0) {
        relative_seek (play, +0.08);
      } else if (strcmp (key_input, GST_PLAY_KB_ARROW_LEFT) == 0) {
        relative_seek (play, -0.01);
1126 1127 1128 1129
      } else if (strcmp (key_input, GST_PLAY_KB_ARROW_UP) == 0) {
        play_set_relative_volume (play, +1.0 / VOLUME_STEPS);
      } else if (strcmp (key_input, GST_PLAY_KB_ARROW_DOWN) == 0) {
        play_set_relative_volume (play, -1.0 / VOLUME_STEPS);
1130 1131 1132 1133 1134
      } else {
        GST_INFO ("keyboard input:");
        for (; *key_input != '\0'; ++key_input)
          GST_INFO ("  code %3d", *key_input);
      }
1135 1136 1137 1138
      break;
  }
}

1139 1140 1141 1142 1143
int
main (int argc, char **argv)
{
  GstPlay *play;
  GPtrArray *playlist;
1144
  gboolean verbose = FALSE;
1145
  gboolean print_version = FALSE;
1146
  gboolean interactive = TRUE;
1147
  gboolean gapless = FALSE;
1148
  gboolean shuffle = FALSE;
1149
  gdouble volume = -1;
1150 1151 1152 1153
  gchar **filenames = NULL;
  gchar *audio_sink = NULL;
  gchar *video_sink = NULL;
  gchar **uris;
1154
  gchar *flags = NULL;
1155 1156 1157
  guint num, i;
  GError *err = NULL;
  GOptionContext *ctx;
1158
  gchar *playlist_file = NULL;
1159
  GOptionEntry options[] = {
1160 1161
    {"verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose,
        N_("Output status information and property notifications"), NULL},
1162
    {"flags", 0, 0, G_OPTION_ARG_STRING, &flags,
1163 1164
          N_("Control playback behaviour setting playbin 'flags' property"),
        NULL},
1165 1166 1167 1168 1169 1170
    {"version", 0, 0, G_OPTION_ARG_NONE, &print_version,
        N_("Print version information and exit"), NULL},
    {"videosink", 0, 0, G_OPTION_ARG_STRING, &video_sink,
        N_("Video sink to use (default is autovideosink)"), NULL},
    {"audiosink", 0, 0, G_OPTION_ARG_STRING, &audio_sink,
        N_("Audio sink to use (default is autoaudiosink)"), NULL},
1171 1172
    {"gapless", 0, 0, G_OPTION_ARG_NONE, &gapless,
        N_("Enable gapless playback"), NULL},
1173 1174
    {"shuffle", 0, 0, G_OPTION_ARG_NONE, &shuffle,
        N_("Shuffle playlist"), NULL},
1175 1176 1177
    {"no-interactive", 0, G_OPTION_FLAG_REVERSE, G_OPTION_ARG_NONE,
          &interactive,
        N_("Disable interactive control via the keyboard"), NULL},
1178 1179
    {"volume", 0, 0, G_OPTION_ARG_DOUBLE, &volume,
        N_("Volume"), NULL},
1180 1181
    {"playlist", 0, 0, G_OPTION_ARG_FILENAME, &playlist_file,
        N_("Playlist file containing input media files"), NULL},
1182 1183
    {"quiet", 'q', 0, G_OPTION_ARG_NONE, &quiet,
        N_("Do not print any output (apart from errors)"), NULL},
1184 1185 1186 1187
    {G_OPTION_REMAINING, 0, 0, G_OPTION_ARG_FILENAME_ARRAY, &filenames, NULL},
    {NULL}
  };

1188 1189
  setlocale (LC_ALL, "");

1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202
#ifdef ENABLE_NLS
  bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
  bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
  textdomain (GETTEXT_PACKAGE);
#endif

  g_set_prgname ("gst-play-" GST_API_VERSION);

  ctx = g_option_context_new ("FILE1|URI1 [FILE2|URI2] [FILE3|URI3] ...");
  g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
  g_option_context_add_group (ctx, gst_init_get_option_group ());
  if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
    g_print ("Error initializing: %s\n", GST_STR_NULL (err->message));
1203 1204
    g_option_context_free (ctx);
    g_clear_error (&err);
1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218
    return 1;
  }
  g_option_context_free (ctx);

  GST_DEBUG_CATEGORY_INIT (play_debug, "play", 0, "gst-play");

  if (print_version) {
    gchar *version_str;

    version_str = gst_version_string ();
    g_print ("%s version %s\n", g_get_prgname (), PACKAGE_VERSION);
    g_print ("%s\n", version_str);
    g_print ("%s\n", GST_PACKAGE_ORIGIN);
    g_free (version_str);
1219 1220 1221

    g_free (audio_sink);
    g_free (video_sink);
1222
    g_free (playlist_file);
1223

1224 1225 1226
    return 0;
  }

1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
  playlist = g_ptr_array_new ();

  if (playlist_file != NULL) {
    gchar *playlist_contents = NULL;
    gchar **lines = NULL;

    if (g_file_get_contents (playlist_file, &playlist_contents, NULL, &err)) {
      lines = g_strsplit (playlist_contents, "\n", 0);
      num = g_strv_length (lines);

      for (i = 0; i < num; i++) {
        if (lines[i][0] != '\0') {
          GST_LOG ("Playlist[%d]: %s", i + 1, lines[i]);
          add_to_playlist (playlist, lines[i]);
        }
      }
      g_strfreev (lines);
      g_free (playlist_contents);
    } else {
      g_printerr ("Could not read playlist: %s\n", err->message);
      g_clear_error (&err);
    }
    g_free (playlist_file);
1250
    playlist_file = NULL;
1251 1252 1253
  }

  if (playlist->len == 0 && (filenames == NULL || *filenames == NULL)) {
1254 1255 1256 1257 1258
    g_printerr (_("Usage: %s FILE1|URI1 [FILE2|URI2] [FILE3|URI3] ..."),
        "gst-play-" GST_API_VERSION);
    g_printerr ("\n\n"),
        g_printerr ("%s\n\n",
        _("You must provide at least one filename or URI to play."));
1259 1260
    /* No input provided. Free array */
    g_ptr_array_free (playlist, TRUE);
1261 1262 1263 1264

    g_free (audio_sink);
    g_free (video_sink);

1265 1266 1267 1268
    return 1;
  }

  /* fill playlist */
1269 1270 1271 1272 1273 1274 1275
  if (filenames != NULL && *filenames != NULL) {
    num = g_strv_length (filenames);
    for (i = 0; i < num; ++i) {
      GST_LOG ("command line argument: %s", filenames[i]);
      add_to_playlist (playlist, filenames[i]);
    }
    g_strfreev (filenames);
1276 1277
  }

1278
  num = playlist->len;
1279 1280 1281
  g_ptr_array_add (playlist, NULL);

  uris = (gchar **) g_ptr_array_free (playlist, FALSE);
1282 1283 1284 1285

  if (shuffle)
    shuffle_uris (uris, num);

1286
  /* prepare */
1287 1288
  play =
      play_new (uris, audio_sink, video_sink, gapless, volume, verbose, flags);
1289

1290 1291 1292 1293 1294 1295
  if (play == NULL) {
    g_printerr
        ("Failed to create 'playbin' element. Check your GStreamer installation.\n");
    return EXIT_FAILURE;
  }

1296 1297
  if (interactive) {
    if (gst_play_kb_set_key_handler (keyboard_cb, play)) {
1298
      g_print (_("Press 'k' to see a list of keyboard shortcuts.\n"));
1299 1300 1301 1302 1303 1304 1305
      atexit (restore_terminal);
    } else {
      g_print ("Interactive keyboard handling in terminal not available.\n");
    }
  }

  /* play */
1306 1307 1308 1309 1310
  do_play (play);

  /* clean up */
  play_free (play);

1311 1312 1313
  g_free (audio_sink);
  g_free (video_sink);

1314
  g_print ("\n");
1315
  gst_deinit ();
1316 1317
  return 0;
}