1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 4; tab-width: 4 -*- */
4 * Copyright (C) John Stebbins 2008 <stebbins@stebbins>
6 * preview.c is free software.
8 * You may redistribute it and/or modify it under the terms of the
9 * GNU General Public License, as published by the Free Software
10 * Foundation; either version 2 of the License, or (at your option)
16 #include <glib/gstdio.h>
17 #include <glib-object.h>
21 #include <gst/interfaces/xoverlay.h>
22 #include <gst/video/video.h>
23 #include <gst/pbutils/missing-plugins.h>
25 #include "callbacks.h"
26 #include "hb-backend.h"
31 #define PREVIEW_STATE_IMAGE 0
32 #define PREVIEW_STATE_LIVE 1
40 gboolean progress_lock;
56 static gboolean live_preview_cb(GstBus *bus, GstMessage *msg, gpointer data);
57 static GstBusSyncReply create_window(GstBus *bus, GstMessage *msg,
59 gboolean preview_expose_cb(GtkWidget *widget, GdkEventExpose *event,
60 signal_user_data_t *ud);
63 ghb_preview_init(signal_user_data_t *ud)
68 ud->preview = g_malloc0(sizeof(preview_t));
69 ud->preview->view = GHB_WIDGET(ud->builder, "preview_image");
70 gtk_widget_realize(ud->preview->view);
71 g_signal_connect(G_OBJECT(ud->preview->view), "expose_event",
72 G_CALLBACK(preview_expose_cb), ud);
73 ud->preview->xid = GDK_DRAWABLE_XID(ud->preview->view->window);
75 ud->preview->play = gst_element_factory_make("playbin", "play");
76 ud->preview->pause = TRUE;
77 //xover = gst_element_factory_make("xvimagesink", "xover");
78 xover = gst_element_factory_make("gconfvideosink", "xover");
79 g_object_set(G_OBJECT(ud->preview->play), "video-sink", xover, NULL);
80 //g_object_set(G_OBJECT(xover), "force-aspect-ratio", TRUE, NULL);
82 bus = gst_pipeline_get_bus(GST_PIPELINE(ud->preview->play));
83 gst_bus_add_watch(bus, live_preview_cb, ud);
84 gst_bus_set_sync_handler(bus, create_window, ud->preview);
85 gst_object_unref(bus);
89 ghb_preview_cleanup(signal_user_data_t *ud)
91 if (ud->preview->current)
93 ud->preview->current = NULL;
94 g_free(ud->preview->current);
98 static GstBusSyncReply
99 create_window(GstBus *bus, GstMessage *msg, gpointer data)
101 preview_t *preview = (preview_t*)data;
103 switch (GST_MESSAGE_TYPE(msg))
105 case GST_MESSAGE_ELEMENT:
107 if (!gst_structure_has_name(msg->structure, "prepare-xwindow-id"))
109 gst_x_overlay_set_xwindow_id(
110 GST_X_OVERLAY(GST_MESSAGE_SRC(msg)), preview->xid);
111 gst_message_unref(msg);
123 get_stream_info_objects_for_type (GstElement *play, const gchar *typestr)
125 GValueArray *info_arr = NULL;
132 g_object_get(play, "stream-info-value-array", &info_arr, NULL);
133 if (info_arr == NULL)
136 for (ii = 0; ii < info_arr->n_values; ++ii)
141 val = g_value_array_get_nth(info_arr, ii);
142 info_obj = g_value_get_object(val);
149 g_object_get(info_obj, "type", &type, NULL);
150 pspec = g_object_class_find_property(
151 G_OBJECT_GET_CLASS (info_obj), "type");
152 value = g_enum_get_value(
153 G_PARAM_SPEC_ENUM (pspec)->enum_class, type);
156 if (g_ascii_strcasecmp (value->value_nick, typestr) == 0 ||
157 g_ascii_strcasecmp (value->value_name, typestr) == 0)
159 ret = g_list_prepend (ret, g_object_ref (info_obj));
164 g_value_array_free (info_arr);
165 return g_list_reverse (ret);
169 caps_set(GstCaps *caps, preview_t *preview)
173 ss = gst_caps_get_structure(caps, 0);
176 gint fps_n, fps_d, width, height;
177 guint num, den, par_n, par_d;
178 guint disp_par_n, disp_par_d;
180 GValue disp_par = {0,};
185 gst_structure_get_fraction(ss, "framerate", &fps_n, &fps_d);
186 gst_structure_get_int(ss, "width", &width);
187 gst_structure_get_int(ss, "height", &height);
188 par = gst_structure_get_value(ss, "pixel-aspect-ratio");
189 par_n = gst_value_get_fraction_numerator(par);
190 par_d = gst_value_get_fraction_denominator(par);
192 g_value_init(&disp_par, GST_TYPE_FRACTION);
193 gst_value_set_fraction(&disp_par, 1, 1);
194 g_object_get(preview->play, "video-sink", &xover, NULL);
195 klass = G_OBJECT_GET_CLASS(xover);
196 pspec = g_object_class_find_property(klass, "pixel-aspect_ratio");
199 GValue par_prop = {0,};
201 g_value_init(&par_prop, pspec->value_type);
202 g_object_get_property(G_OBJECT(xover), "pixel-aspect-ratio",
204 if (!g_value_transform(&par_prop, &disp_par))
206 g_warning("transform failed");
207 gst_value_set_fraction(&disp_par, 1, 1);
209 g_value_unset(&par_prop);
211 disp_par_n = gst_value_get_fraction_numerator(&disp_par);
212 disp_par_d = gst_value_get_fraction_denominator(&disp_par);
213 g_value_unset(&disp_par);
214 gst_video_calculate_display_ratio(
215 &num, &den, width, height, par_n, par_d, disp_par_n, disp_par_d);
217 width = gst_util_uint64_scale_int(height, num, den);
218 if (width != preview->width || height != preview->height)
220 gtk_widget_set_size_request(preview->view, width, height);
221 preview->width = width;
222 preview->height = height;
228 update_stream_info(preview_t *preview)
230 GList *vstreams, *ll;
233 vstreams = get_stream_info_objects_for_type(preview->play, "video");
236 for (ll = vstreams; vpad == NULL && ll != NULL; ll = ll->next)
238 g_object_get(ll->data, "object", &vpad, NULL);
245 caps = gst_pad_get_negotiated_caps(vpad);
248 caps_set(caps, preview);
249 gst_caps_unref(caps);
251 //g_signal_connect(vpad, "notify::caps", G_CALLBACK(caps_set_cb), preview);
252 gst_object_unref(vpad);
254 g_list_foreach(vstreams, (GFunc)g_object_unref, NULL);
255 g_list_free(vstreams);
259 live_preview_cb(GstBus *bus, GstMessage *msg, gpointer data)
261 signal_user_data_t *ud = (signal_user_data_t*)data;
263 switch (GST_MESSAGE_TYPE(msg))
265 case GST_MESSAGE_ERROR:
270 gst_message_parse_error(msg, &err, &debug);
271 g_warning("Gstreamer Error: %s", err->message);
276 case GST_MESSAGE_ELEMENT:
278 if (gst_is_missing_plugin_message(msg))
280 gst_element_set_state(ud->preview->play, GST_STATE_PAUSED);
281 gchar *message, *desc;
282 desc = gst_missing_plugin_message_get_description(msg);
283 message = g_strdup_printf(
284 "Missing GStreamer plugin\n"
285 "Audio or Video may not play as expected\n\n%s",
287 ghb_message_dialog(GTK_MESSAGE_WARNING, message, "Ok", NULL);
289 gst_element_set_state(ud->preview->play, GST_STATE_PLAYING);
293 case GST_MESSAGE_STATE_CHANGED:
295 GstState state, pending;
296 gst_element_get_state(ud->preview->play, &state, &pending, 0);
297 if (state == GST_STATE_PAUSED || state == GST_STATE_PLAYING)
299 update_stream_info(ud->preview);
303 case GST_MESSAGE_EOS:
308 img = GTK_IMAGE(GHB_WIDGET(ud->builder, "live_preview_play_image"));
309 gtk_image_set_from_stock(img, "gtk-media-play", GTK_ICON_SIZE_BUTTON);
310 gst_element_set_state(ud->preview->play, GST_STATE_PAUSED);
311 ud->preview->pause = TRUE;
312 gst_element_seek(ud->preview->play, 1.0,
313 GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_KEY_UNIT,
314 GST_SEEK_TYPE_SET, 0,
315 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE);
327 live_preview_start(signal_user_data_t *ud)
332 img = GTK_IMAGE(GHB_WIDGET(ud->builder, "live_preview_play_image"));
333 if (!ud->preview->encoded[ud->preview->frame])
335 gtk_image_set_from_stock(img, "gtk-media-play", GTK_ICON_SIZE_BUTTON);
336 gst_element_set_state(ud->preview->play, GST_STATE_NULL);
337 ud->preview->pause = TRUE;
341 uri = g_strdup_printf("file://%s", ud->preview->current);
342 gtk_image_set_from_stock(img, "gtk-media-pause", GTK_ICON_SIZE_BUTTON);
343 ud->preview->state = PREVIEW_STATE_LIVE;
344 g_object_set(G_OBJECT(ud->preview->play), "uri", uri, NULL);
345 gst_element_set_state(ud->preview->play, GST_STATE_PLAYING);
346 ud->preview->pause = FALSE;
351 live_preview_pause(signal_user_data_t *ud)
355 img = GTK_IMAGE(GHB_WIDGET(ud->builder, "live_preview_play_image"));
356 gtk_image_set_from_stock(img, "gtk-media-play", GTK_ICON_SIZE_BUTTON);
357 gst_element_set_state(ud->preview->play, GST_STATE_PAUSED);
358 ud->preview->pause = TRUE;
362 live_preview_stop(signal_user_data_t *ud)
367 img = GTK_IMAGE(GHB_WIDGET(ud->builder, "live_preview_play_image"));
368 gtk_image_set_from_stock(img, "gtk-media-play", GTK_ICON_SIZE_BUTTON);
369 gst_element_set_state(ud->preview->play, GST_STATE_NULL);
370 ud->preview->pause = TRUE;
371 ud->preview->state = PREVIEW_STATE_IMAGE;
373 progress = GTK_RANGE(GHB_WIDGET(ud->builder, "live_preview_progress"));
374 gtk_range_set_value(progress, 0);
378 ghb_live_reset(signal_user_data_t *ud)
382 if (!ud->preview->pause)
383 live_preview_stop(ud);
384 if (ud->preview->current)
386 g_free(ud->preview->current);
387 ud->preview->current = NULL;
389 encoded = ud->preview->encoded[ud->preview->frame];
390 memset(ud->preview->encoded, 0, sizeof(gboolean) * 10);
392 ghb_set_preview_image(ud);
395 extern void hb_get_tempory_directory(hb_handle_t *h, char path[512]);
398 live_preview_start_cb(GtkWidget *xwidget, signal_user_data_t *ud)
402 gint frame = ud->preview->frame;
404 tmp_dir = ghb_get_tmp_dir();
405 name = g_strdup_printf("%s/live%02d", tmp_dir, ud->preview->frame);
406 if (ud->preview->current)
407 g_free(ud->preview->current);
408 ud->preview->current = name;
410 if (ud->preview->encoded[frame] &&
411 g_file_test(name, G_FILE_TEST_IS_REGULAR))
413 if (ud->preview->pause)
414 live_preview_start(ud);
416 live_preview_pause(ud);
422 ud->preview->encode_frame = frame;
423 js = ghb_value_dup(ud->settings);
424 ghb_settings_set_string(js, "destination", name);
425 ghb_settings_set_int(js, "start_frame", ud->preview->frame);
426 ghb_settings_set_int(js, "live_duration", 15);
427 ghb_add_live_job(js, 0);
428 ghb_start_live_encode();
434 ghb_live_encode_done(signal_user_data_t *ud, gboolean success)
439 prog = GHB_WIDGET(ud->builder, "live_encode_progress");
441 ud->preview->encode_frame == ud->preview->frame)
443 gtk_progress_bar_set_text(GTK_PROGRESS_BAR(prog), "Done");
444 gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR(prog), 1);
445 ud->preview->encoded[ud->preview->encode_frame] = TRUE;
446 live_preview_start(ud);
447 widget = GHB_WIDGET(ud->builder, "live_progress_box");
448 gtk_widget_hide (widget);
449 widget = GHB_WIDGET(ud->builder, "live_preview_progress");
450 gtk_widget_show (widget);
454 gtk_progress_bar_set_text(GTK_PROGRESS_BAR(prog), "");
455 gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR(prog), 0);
456 ud->preview->encoded[ud->preview->encode_frame] = FALSE;
461 unlock_progress_cb(signal_user_data_t *ud)
463 ud->preview->progress_lock = FALSE;
464 // This function is initiated by g_idle_add. Must return false
465 // so that it is not called again
470 ghb_live_preview_progress(signal_user_data_t *ud)
472 GstFormat fmt = GST_FORMAT_TIME;
473 gint64 len = -1, pos = -1;
475 if (ud->preview->state != PREVIEW_STATE_LIVE || ud->preview->seek_lock)
478 ud->preview->progress_lock = TRUE;
479 if (gst_element_query_duration(ud->preview->play, &fmt, &len))
481 if (len != -1 && fmt == GST_FORMAT_TIME)
483 ud->preview->len = len / GST_MSECOND;
486 if (gst_element_query_position(ud->preview->play, &fmt, &pos))
488 if (pos != -1 && fmt == GST_FORMAT_TIME)
490 ud->preview->pos = pos / GST_MSECOND;
493 if (ud->preview->len > 0)
498 percent = (gdouble)ud->preview->pos * 100 / ud->preview->len;
499 progress = GTK_RANGE(GHB_WIDGET(ud->builder, "live_preview_progress"));
500 gtk_range_set_value(progress, percent);
502 g_idle_add((GSourceFunc)unlock_progress_cb, ud);
506 unlock_seek_cb(signal_user_data_t *ud)
508 ud->preview->seek_lock = FALSE;
509 // This function is initiated by g_idle_add. Must return false
510 // so that it is not called again
515 live_preview_seek_cb(GtkWidget *widget, signal_user_data_t *ud)
520 if (ud->preview->progress_lock)
523 ud->preview->seek_lock = TRUE;
524 dval = gtk_range_get_value(GTK_RANGE(widget));
525 pos = ((ud->preview->len * dval) / 100) * GST_MSECOND;
526 gst_element_seek(ud->preview->play, 1.0,
527 GST_FORMAT_TIME, GST_SEEK_FLAG_FLUSH | GST_SEEK_FLAG_ACCURATE,
528 GST_SEEK_TYPE_SET, pos,
529 GST_SEEK_TYPE_NONE, GST_CLOCK_TIME_NONE);
530 g_idle_add((GSourceFunc)unlock_seek_cb, ud);
534 ghb_set_preview_image(signal_user_data_t *ud)
537 gint preview_width, preview_height, target_height, width, height;
539 g_debug("set_preview_button_image ()");
542 live_preview_stop(ud);
544 titleindex = ghb_settings_combo_int(ud->settings, "title");
545 if (titleindex < 0) return;
546 widget = GHB_WIDGET (ud->builder, "preview_frame");
547 ud->preview->frame = ghb_widget_int(widget) - 1;
548 if (ud->preview->encoded[ud->preview->frame])
550 widget = GHB_WIDGET(ud->builder, "live_progress_box");
551 gtk_widget_hide (widget);
552 widget = GHB_WIDGET(ud->builder, "live_preview_progress");
553 gtk_widget_show (widget);
557 widget = GHB_WIDGET(ud->builder, "live_preview_progress");
558 gtk_widget_hide (widget);
559 widget = GHB_WIDGET(ud->builder, "live_progress_box");
560 gtk_widget_show (widget);
561 widget = GHB_WIDGET(ud->builder, "live_encode_progress");
562 gtk_progress_bar_set_text(GTK_PROGRESS_BAR(widget), "");
563 gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR(widget), 0);
565 if (ud->preview->pix != NULL)
566 g_object_unref(ud->preview->pix);
567 ud->preview->pix = ghb_get_preview_image(titleindex, ud->preview->frame,
569 if (ud->preview->pix == NULL) return;
570 preview_width = gdk_pixbuf_get_width(ud->preview->pix);
571 preview_height = gdk_pixbuf_get_height(ud->preview->pix);
572 widget = GHB_WIDGET (ud->builder, "preview_image");
573 if (preview_width != ud->preview->width ||
574 preview_height != ud->preview->height)
576 gtk_widget_set_size_request(widget, preview_width, preview_height);
577 ud->preview->width = preview_width;
578 ud->preview->height = preview_height;
581 widget->window, NULL, ud->preview->pix, 0, 0, 0, 0,
582 -1, -1, GDK_RGB_DITHER_NONE, 0, 0);
584 gchar *text = g_strdup_printf("%d x %d", preview_width, preview_height);
585 widget = GHB_WIDGET (ud->builder, "preview_dims");
586 gtk_label_set_text(GTK_LABEL(widget), text);
589 g_debug("preview %d x %d", preview_width, preview_height);
590 target_height = MIN(ud->preview->button_height, 128);
591 height = target_height;
592 width = preview_width * height / preview_height;
594 if ((height >= 16) && (width >= 16))
596 GdkPixbuf *scaled_preview;
597 scaled_preview = gdk_pixbuf_scale_simple (ud->preview->pix, width,
598 height, GDK_INTERP_NEAREST);
599 if (scaled_preview != NULL)
601 widget = GHB_WIDGET (ud->builder, "preview_button_image");
602 gtk_image_set_from_pixbuf(GTK_IMAGE(widget), scaled_preview);
603 g_object_unref (scaled_preview);
609 delayed_expose_cb(signal_user_data_t *ud)
614 g_object_get(ud->preview->play, "video-sink", &vsink, NULL);
615 if (GST_IS_BIN(vsink))
616 xover = GST_X_OVERLAY(gst_bin_get_by_interface(
617 GST_BIN(vsink), GST_TYPE_X_OVERLAY));
619 xover = GST_X_OVERLAY(vsink);
620 gst_x_overlay_expose(xover);
621 // This function is initiated by g_idle_add. Must return false
622 // so that it is not called again
629 GdkEventExpose *event,
630 signal_user_data_t *ud)
632 if (ud->preview->state == PREVIEW_STATE_LIVE)
634 if (GST_STATE(ud->preview->play) >= GST_STATE_PAUSED)
639 g_object_get(ud->preview->play, "video-sink", &vsink, NULL);
640 if (GST_IS_BIN(vsink))
641 xover = GST_X_OVERLAY(gst_bin_get_by_interface(
642 GST_BIN(vsink), GST_TYPE_X_OVERLAY));
644 xover = GST_X_OVERLAY(vsink);
645 gst_x_overlay_expose(xover);
646 // For some reason, the exposed region doesn't always get
647 // cleaned up here. But a delayed gst_x_overlay_expose()
649 g_idle_add((GSourceFunc)delayed_expose_cb, ud);
656 widget->window, NULL, ud->preview->pix, 0, 0, 0, 0,
657 -1, -1, GDK_RGB_DITHER_NONE, 0, 0);
662 preview_button_size_allocate_cb(GtkWidget *widget, GtkAllocation *allocation, signal_user_data_t *ud)
664 g_debug("allocate %d x %d", allocation->width, allocation->height);
665 if (ud->preview->button_width == allocation->width &&
666 ud->preview->button_height == allocation->height)
668 // Nothing to do. Bug out.
669 g_debug("nothing to do");
672 g_debug("prev allocate %d x %d", ud->preview->button_width,
673 ud->preview->button_height);
674 ud->preview->button_width = allocation->width;
675 ud->preview->button_height = allocation->height;
676 ghb_set_preview_image(ud);
680 preview_button_clicked_cb(GtkWidget *xwidget, signal_user_data_t *ud)
684 titleindex = ghb_settings_combo_int(ud->settings, "title");
685 if (titleindex < 0) return;
686 g_debug("titleindex %d", titleindex);
688 GtkWidget *widget = GHB_WIDGET (ud->builder, "preview_window");
689 gtk_widget_show (widget);
693 preview_frame_value_changed_cb(GtkWidget *widget, signal_user_data_t *ud)
695 ghb_set_preview_image(ud);