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/* GStreamer Editing Services
* Copyright (C) 2010 Brandon Lewis <brandon@alum.berkeley.edu>
*
* 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.
*/
#include <stdlib.h>
#include <ges/ges.h>
typedef struct
{
int type;
char *name;
} transition_type;
GESClip *make_source (char *path, guint64 start, guint64 duration,
gint priority);
GESClip *make_overlay (char *text, guint64 start, guint64 duration,
gint priority, guint32 color, gdouble xpos, gdouble ypos);
GESPipeline *make_timeline (char *path, float duration, char *text,
guint32 color, gdouble xpos, gdouble ypos);
#define DEFAULT_DURATION 5
#define DEFAULT_POS 0.5
GESClip *
make_source (char *path, guint64 start, guint64 duration, gint priority)
{
gchar *uri = gst_filename_to_uri (path, NULL);
GESClip *ret = GES_CLIP (ges_uri_clip_new (uri));
g_object_set (ret,
"start", (guint64) start,
"duration", (guint64) duration,
"priority", (guint32) priority, "in-point", (guint64) 0, NULL);
g_free (uri);
return ret;
}
GESClip *
make_overlay (char *text, guint64 start, guint64 duration, gint priority,
guint32 color, gdouble xpos, gdouble ypos)
{
GESClip *ret = GES_CLIP (ges_text_overlay_clip_new ());
g_object_set (ret,
"text", (gchar *) text,
"start", (guint64) start,
"duration", (guint64) duration,
"priority", (guint32) priority,
"in-point", (guint64) 0,
"color", (guint32) color,
"valignment", (gint) GES_TEXT_VALIGN_ABSOLUTE,
"halignment", (gint) GES_TEXT_HALIGN_ABSOLUTE,
"xpos", (gdouble) xpos, "ypos", (gdouble) ypos, NULL);
return ret;
}
GESPipeline *
make_timeline (char *path, float duration, char *text, guint32 color,
gdouble xpos, gdouble ypos)
{
GESTimeline *timeline;
GESTrack *trackv, *tracka;
GESLayer *layer1;
GESClip *srca;
GESClip *overlay;
GESPipeline *pipeline;
guint64 aduration;
pipeline = ges_pipeline_new ();
ges_pipeline_set_mode (pipeline, GES_PIPELINE_MODE_PREVIEW_VIDEO);
timeline = ges_timeline_new ();
ges_pipeline_set_timeline (pipeline, timeline);
trackv = GES_TRACK (ges_video_track_new ());
ges_timeline_add_track (timeline, trackv);
tracka = GES_TRACK (ges_audio_track_new ());
ges_timeline_add_track (timeline, tracka);
layer1 = GES_LAYER (ges_layer_new ());
g_object_set (layer1, "priority", (gint32) 0, NULL);
if (!ges_timeline_add_layer (timeline, layer1))
exit (-1);
aduration = (guint64) (duration * GST_SECOND);
srca = make_source (path, 0, aduration, 1);
overlay = make_overlay (text, 0, aduration, 0, color, xpos, ypos);
ges_layer_add_clip (layer1, srca);
ges_layer_add_clip (layer1, overlay);
return pipeline;
}
int
main (int argc, char **argv)
{
GError *err = NULL;
GOptionContext *ctx;
GESPipeline *pipeline;
GMainLoop *mainloop;
gdouble duration = DEFAULT_DURATION;
char *path = NULL, *text;
guint64 color;
gdouble xpos = DEFAULT_POS, ypos = DEFAULT_POS;
GOptionEntry options[] = {
{"duration", 'd', 0, G_OPTION_ARG_DOUBLE, &duration,
"duration of segment", "seconds"},
{"path", 'p', 0, G_OPTION_ARG_STRING, &path,
"path to file", "path"},
{"text", 't', 0, G_OPTION_ARG_STRING, &text,
"text to render", "text"},
{"color", 'c', 0, G_OPTION_ARG_INT64, &color,
"color of the text", "color"},
{"xpos", 'x', 0, G_OPTION_ARG_DOUBLE, &xpos,
"horizontal position of the text", "color"},
{"ypos", 'y', 0, G_OPTION_ARG_DOUBLE, &ypos,
"vertical position of the text", "color"},
{NULL}
};
ctx = g_option_context_new ("- file segment playback with text overlay");
g_option_context_add_main_entries (ctx, options, NULL);
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", err->message);
g_option_context_free (ctx);
g_clear_error (&err);
exit (1);
}
if (argc > 1) {
g_print ("%s", g_option_context_get_help (ctx, TRUE, NULL));
exit (0);
}
g_option_context_free (ctx);
ges_init ();
if (path == NULL)
g_error ("Must specify --path=/path/to/media/file option\n");
pipeline = make_timeline (path, duration, text, color, xpos, ypos);
mainloop = g_main_loop_new (NULL, FALSE);
g_timeout_add_seconds ((duration) + 1, (GSourceFunc) g_main_loop_quit,
mainloop);
gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
g_main_loop_run (mainloop);
return 0;
}
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