/*
 * Initial main.c file generated by Glade. Edit as required.
 * Glade will not overwrite this file.
 */

#ifdef HAVE_CONFIG_H
#  include <config.h>
#endif

//#define DEBUG_ENABLED

#include <gst/gstclock.h>

#include "gstplay.h"

#include "interface.h"
#include "support.h"

#include "codecs.h"

#define MUTEX_STATUS() (g_mutex_trylock(gdk_threads_mutex)? g_mutex_unlock(gdk_threads_mutex), "was not locked" : "was locked")


#define BUFFER 4

extern gboolean _gst_plugin_spew;
gboolean idle_func(gpointer data);
GstElement *show, *video_render_queue;
GstElement *audio_play, *audio_render_queue;
GstElement *src;
GstPipeline *pipeline;
GstElement *parse = NULL;
GstPlayState state;
gboolean picture_shown = FALSE;
guchar statusline[200];
guchar *statustext = "stopped";

static void frame_displayed(GstSrc *asrc) 
{
  int size, time, frame_time = 0, src_pos;
  guint mux_rate;
  static int prev_time = -1;

  DEBUG("gstplay: frame displayed %s\n", MUTEX_STATUS());

  mux_rate = gst_util_get_int_arg(GTK_OBJECT(parse),"mux_rate");
  size = gst_util_get_int_arg(GTK_OBJECT(src),"size");
  time = (size*8)/mux_rate;
  frame_time = gst_util_get_int_arg(GTK_OBJECT(show),"frame_time");
  src_pos = gst_util_get_int_arg(GTK_OBJECT(src),"offset");
  frame_time = (src_pos*8)/mux_rate;

  if (frame_time >= prev_time)  {
    
    g_snprintf(statusline, 200, "%02d:%02d / %02d:%02d\n", 
		  frame_time/60, frame_time%60,
		  time/60, time%60);

    //printf("%d %d %g\n", frame_time, size, frame_time*100.0/size);

    update_status_area();
    if (state == GSTPLAY_PLAYING)
      update_slider(src_pos*100.0/size);
  }
  picture_shown = TRUE;

  prev_time = frame_time;
  DEBUG("gstplay: frame displayed end %s\n", MUTEX_STATUS());
}

gboolean idle_func(gpointer data) {
  DEBUG("idle start %s\n",MUTEX_STATUS());
  gst_src_push(GST_SRC(data));
  DEBUG("idle stop %s\n",MUTEX_STATUS());
  return TRUE;
}

static void eof(GstSrc *src) {
  change_state(GSTPLAY_PAUSE);
  picture_shown = TRUE;
}

void show_next_picture() {
  picture_shown = FALSE;
  DEBUG("gstplay: next picture %s\n", MUTEX_STATUS());
  while (!picture_shown) {
    gdk_threads_leave();
    gst_src_push(GST_SRC(src));
    gdk_threads_enter();
  }
  DEBUG("gstplay: next found %s\n", MUTEX_STATUS());
}

void mute_audio(gboolean mute) {
  gtk_object_set(GTK_OBJECT(audio_play),"mute",mute,NULL);
}

void gstplay_parse_state_changed(GstElement *element, gint state, gpointer data) 
{
  printf("gstplay: element \"%s\" state changed %d\n", gst_element_get_name(element), state); 

  if (state == GST_STATE_COMPLETE) {
    g_print("gstplay: setting to PLAYING state\n");
    gst_element_set_state(GST_ELEMENT(pipeline),GST_STATE_PLAYING);
    gst_clock_reset(gst_clock_get_system());
    g_print("gstplay: PLAYING\n");
  }
}

void change_state(GstPlayState new_state) {

  if (new_state == state) return;
  switch (new_state) { 
    case GSTPLAY_PLAYING:
      mute_audio(FALSE);
      statustext = "playing";
      update_status_area();
      gtk_idle_add(idle_func,src);
      state = GSTPLAY_PLAYING;
      update_buttons(0);
      break;
    case GSTPLAY_PAUSE:
      statustext = "paused";
      update_status_area();
      if (state != GSTPLAY_STOPPED) gtk_idle_remove_by_data(src);
      mute_audio(TRUE);
      state = GSTPLAY_PAUSE;
      update_buttons(1);
      break;
    case GSTPLAY_STOPPED:
      if (state != GSTPLAY_PAUSE) gtk_idle_remove_by_data(src);
      statustext = "stopped";
      update_status_area();
      mute_audio(TRUE);
      state = GSTPLAY_STOPPED;
      gtk_object_set(GTK_OBJECT(src),"offset",0,NULL);
      update_buttons(2);
      update_slider(0.0);
      show_next_picture();
      break;
  }
}

static void have_type(GstSink *sink) {
  gint type;
  GstType *gsttype;
  
  type = gst_util_get_int_arg(GTK_OBJECT(sink),"type");
  gsttype = gst_type_find_by_id(type);

  g_print("have type %d:%s\n", type, gsttype->mime);

  gst_bin_remove(GST_BIN(pipeline), GST_ELEMENT(sink));

  gst_pad_disconnect(gst_element_get_pad(src,"src"),
                  gst_element_get_pad(GST_ELEMENT(sink),"sink"));
   
  if (strstr(gsttype->mime, "mpeg1-system")) {
    parse = gst_elementfactory_make("mpeg1parse","mpeg1_system_parse");
    gtk_signal_connect(GTK_OBJECT(parse),"new_pad",
                       GTK_SIGNAL_FUNC(mpeg1_new_pad_created),pipeline);
  }
  else if (strstr(gsttype->mime, "mpeg2-system")) {
    parse = gst_elementfactory_make("mpeg2parse","mpeg2_system_parse");
    gtk_signal_connect(GTK_OBJECT(parse),"new_pad",
                       GTK_SIGNAL_FUNC(mpeg2_new_pad_created),pipeline);
  }
  else if (strstr(gsttype->mime, "avi")) {
    parse = gst_elementfactory_make("parseavi","parse");
    gtk_signal_connect(GTK_OBJECT(parse),"new_pad",
                       GTK_SIGNAL_FUNC(avi_new_pad_created),pipeline);
  }
  else if (strstr(gsttype->mime, "mpeg1")) {
    mpeg1_setup_video_thread(gst_element_get_pad(src,"src"), show, GST_ELEMENT(pipeline));
  }
  else {
    g_print("unknown media type\n");
    exit(0);
  }

  if (parse) {
    gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(parse));
    gst_pad_connect(gst_element_get_pad(src,"src"),
                  gst_element_get_pad(parse,"sink"));
    gtk_signal_connect(GTK_OBJECT(parse),"state_change",
                       GTK_SIGNAL_FUNC(gstplay_parse_state_changed),pipeline);
  }

  gtk_object_set(GTK_OBJECT(src),"offset",0,NULL);
}

int
main (int argc, char *argv[])
{
  GtkWidget *window1;
  GstElement *typefind;
  GstElement *video_render_thread;
  GstElement *audio_render_thread;

  bindtextdomain (PACKAGE, PACKAGE_LOCALE_DIR);
  textdomain (PACKAGE);

  g_thread_init(NULL);
  gtk_init(&argc,&argv);
  gnome_init ("gstreamer", VERSION, argc, argv);
  gst_init(&argc,&argv);
  gst_plugin_load("mpeg1parse");
  gst_plugin_load("mpeg2parse");
  gst_plugin_load("mp1videoparse");
  gst_plugin_load("mp3parse");
  gst_plugin_load("parsewav");
  gst_plugin_load("parseavi");
  gst_plugin_load("videosink");

  g_snprintf(statusline, 200, "seeking"); 

  pipeline = gst_pipeline_new("main_pipeline");
  g_return_val_if_fail(pipeline != NULL, -1);

  video_render_thread = gst_thread_new("video_render_thread");
  g_return_val_if_fail(video_render_thread != NULL, -1);
  show = gst_elementfactory_make("videosink","show");
  g_return_val_if_fail(show != NULL, -1);
  gtk_object_set(GTK_OBJECT(show),"xv_enabled",FALSE,NULL);
  window1 = create_window1 (gst_util_get_widget_arg(GTK_OBJECT(show),"widget"));
  gtk_widget_show (window1);
  gtk_signal_connect(GTK_OBJECT(show),"frame_displayed",
                       GTK_SIGNAL_FUNC(frame_displayed),NULL);
  gst_bin_add(GST_BIN(video_render_thread),GST_ELEMENT(show));
  gst_element_add_ghost_pad(GST_ELEMENT(video_render_thread),
                               gst_element_get_pad(show,"sink"));

  video_render_queue = gst_elementfactory_make("queue","video_render_queue");
  gtk_object_set(GTK_OBJECT(video_render_queue),"max_level",BUFFER,NULL);
  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(video_render_queue));
  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(video_render_thread));
  gst_pad_connect(gst_element_get_pad(video_render_queue,"src"),
                  gst_element_get_pad(video_render_thread,"sink"));
  gtk_object_set(GTK_OBJECT(video_render_thread),"create_thread",TRUE,NULL);


  audio_render_thread = gst_thread_new("audio_render_thread");
  g_return_val_if_fail(audio_render_thread != NULL, -1);
  audio_play = gst_elementfactory_make("audiosink","play_audio");
  gst_bin_add(GST_BIN(audio_render_thread),GST_ELEMENT(audio_play));
  gst_element_add_ghost_pad(GST_ELEMENT(audio_render_thread),
                               gst_element_get_pad(audio_play,"sink"));

  audio_render_queue = gst_elementfactory_make("queue","audio_render_queue");
  gtk_object_set(GTK_OBJECT(audio_render_queue),"max_level",BUFFER,NULL);
  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(audio_render_queue));
  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(audio_render_thread));
  gst_pad_connect(gst_element_get_pad(audio_render_queue,"src"),
                  gst_element_get_pad(audio_render_thread,"sink"));
  gtk_object_set(GTK_OBJECT(audio_render_thread),"create_thread",TRUE,NULL);


  src = gst_elementfactory_make("disksrc","disk_src");
  g_return_val_if_fail(src != NULL, -1);
  g_print("should be using file '%s'\n",argv[1]);
  gtk_object_set(GTK_OBJECT(src),"location",argv[1],NULL);

  gtk_window_set_title (GTK_WINDOW (window1), g_strdup_printf("GStreamer Media player - %s", argv[1]));

  typefind = gst_elementfactory_make("typefind","typefind");
  g_return_val_if_fail(typefind != NULL, -1);

  gtk_signal_connect(GTK_OBJECT(typefind),"have_type",
                       GTK_SIGNAL_FUNC(have_type),NULL);


  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(src));
  gst_bin_add(GST_BIN(pipeline),GST_ELEMENT(typefind));


  gtk_signal_connect(GTK_OBJECT(src),"eos",
                       GTK_SIGNAL_FUNC(eof),NULL);

  gst_pad_connect(gst_element_get_pad(src,"src"),
                  gst_element_get_pad(typefind,"sink"));

  g_print("setting to PREROLL state\n");
  gst_element_set_state(GST_ELEMENT(pipeline),GST_STATE_PREROLL);
  g_print("setting to RUNNING state\n");
  gst_element_set_state(GST_ELEMENT(pipeline),GST_STATE_RUNNING);

  state = GSTPLAY_STOPPED;

  change_state(GSTPLAY_PLAYING);

  gdk_threads_enter();
  gtk_main();
  gdk_threads_leave();
  return 0;
}