| /* GStreamer |
| * |
| * Copyright (C) 2009 Wim Taymans <wim.taymans@gmail.com> |
| * |
| * 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 |
| |
| #include <gst/gst.h> |
| |
| #include <stdio.h> |
| #include <string.h> |
| #include <stdlib.h> |
| |
| typedef struct _App App; |
| |
| struct _App |
| { |
| GstElement *playbin; |
| GstElement *textsink; |
| |
| GMainLoop *loop; |
| }; |
| |
| static App s_app; |
| |
| static gboolean |
| bus_message (GstBus * bus, GstMessage * message, App * app) |
| { |
| GST_DEBUG ("got message %s", |
| gst_message_type_get_name (GST_MESSAGE_TYPE (message))); |
| |
| switch (GST_MESSAGE_TYPE (message)) { |
| case GST_MESSAGE_ERROR: |
| { |
| GError *gerror; |
| gchar *debug; |
| |
| gst_message_parse_error (message, &gerror, &debug); |
| gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug); |
| g_error_free (gerror); |
| g_free (debug); |
| |
| g_main_loop_quit (app->loop); |
| break; |
| } |
| case GST_MESSAGE_WARNING: |
| { |
| GError *gerror; |
| gchar *debug; |
| |
| gst_message_parse_warning (message, &gerror, &debug); |
| gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug); |
| g_error_free (gerror); |
| g_free (debug); |
| break; |
| } |
| case GST_MESSAGE_EOS: |
| g_message ("received EOS"); |
| g_main_loop_quit (app->loop); |
| break; |
| default: |
| break; |
| } |
| return TRUE; |
| } |
| |
| static GstFlowReturn |
| have_subtitle (GstElement * appsink, App * app) |
| { |
| GstBuffer *buffer; |
| GstSample *sample; |
| |
| /* get the buffer, we can also wakeup the mainloop to get the subtitle from |
| * appsink in the mainloop */ |
| g_signal_emit_by_name (appsink, "pull-sample", &sample); |
| if (sample) { |
| GstMapInfo map; |
| gint64 position; |
| GstClock *clock; |
| GstClockTime base_time, running_time; |
| |
| buffer = gst_sample_get_buffer (sample); |
| gst_element_query_position (appsink, GST_FORMAT_TIME, &position); |
| |
| clock = gst_element_get_clock (appsink); |
| base_time = gst_element_get_base_time (appsink); |
| |
| running_time = gst_clock_get_time (clock) - base_time; |
| |
| gst_object_unref (clock); |
| |
| g_message ("received a subtitle at position %" GST_TIME_FORMAT |
| ", running_time %" GST_TIME_FORMAT, GST_TIME_ARGS (position), |
| GST_TIME_ARGS (running_time)); |
| |
| gst_buffer_map (buffer, &map, GST_MAP_READ); |
| gst_util_dump_mem (map.data, map.size); |
| gst_buffer_unmap (buffer, &map); |
| gst_sample_unref (sample); |
| } |
| return GST_FLOW_OK; |
| } |
| |
| int |
| main (int argc, char *argv[]) |
| { |
| App *app = &s_app; |
| GstBus *bus; |
| GstCaps *subcaps; |
| |
| gst_init (&argc, &argv); |
| |
| if (argc < 2) { |
| g_print ("usage: %s <uri> [<suburi>]\n", argv[0]); |
| return -1; |
| } |
| |
| /* create a mainloop to get messages */ |
| app->loop = g_main_loop_new (NULL, TRUE); |
| |
| app->playbin = gst_element_factory_make ("playbin", NULL); |
| g_assert (app->playbin); |
| |
| /* set appsink to get the subtitles */ |
| app->textsink = gst_element_factory_make ("appsink", "subtitle_sink"); |
| g_object_set (G_OBJECT (app->textsink), "emit-signals", TRUE, NULL); |
| g_object_set (G_OBJECT (app->textsink), "ts-offset", 0 * GST_SECOND, NULL); |
| g_signal_connect (app->textsink, "new-sample", G_CALLBACK (have_subtitle), |
| app); |
| subcaps = gst_caps_from_string ("text/x-raw, format={ utf8, pango-markup }"); |
| g_object_set (G_OBJECT (app->textsink), "caps", subcaps, NULL); |
| gst_caps_unref (subcaps); |
| |
| g_object_set (G_OBJECT (app->playbin), "text-sink", app->textsink, NULL); |
| |
| bus = gst_pipeline_get_bus (GST_PIPELINE (app->playbin)); |
| |
| /* add watch for messages */ |
| gst_bus_add_watch (bus, (GstBusFunc) bus_message, app); |
| |
| /* set to read from appsrc */ |
| g_object_set (app->playbin, "uri", argv[1], NULL); |
| |
| if (argc > 2) |
| g_object_set (app->playbin, "suburi", argv[2], NULL); |
| |
| /* go to playing and wait in a mainloop. */ |
| gst_element_set_state (app->playbin, GST_STATE_PLAYING); |
| |
| /* this mainloop is stopped when we receive an error or EOS */ |
| g_main_loop_run (app->loop); |
| |
| g_message ("stopping"); |
| |
| gst_element_set_state (app->playbin, GST_STATE_NULL); |
| |
| gst_object_unref (bus); |
| g_main_loop_unref (app->loop); |
| |
| return 0; |
| } |