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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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8e5f7f27f5
When g_option_context_parse fails, context and error variables are not getting free'd which results in memory leaks. Free'ing the same. And replacing g_error_free with g_clear_error, which checks if the error being passed is not NULL and sets the variable to NULL on free'ing. https://bugzilla.gnome.org/show_bug.cgi?id=753852
235 lines
6.8 KiB
C
235 lines
6.8 KiB
C
/* GStreamer dynamic effect change test app
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* Copyright (C) 2012 Tim-Philipp Müller <tim centricular net>
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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* Based on python script by Thiago Sousa Santos
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <gst/gst.h>
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static gchar *opt_effects = NULL;
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#define DEFAULT_EFFECTS "identity,exclusion,navigationtest," \
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"agingtv,videoflip,vertigotv,gaussianblur,shagadelictv,edgetv"
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static GstPad *blockpad;
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static GstElement *conv_before;
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static GstElement *conv_after;
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static GstElement *cur_effect;
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static GstElement *pipeline;
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static GQueue effects = G_QUEUE_INIT;
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static GstPadProbeReturn
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event_probe_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
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{
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GMainLoop *loop = user_data;
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GstElement *next;
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if (GST_EVENT_TYPE (GST_PAD_PROBE_INFO_DATA (info)) != GST_EVENT_EOS)
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return GST_PAD_PROBE_OK;
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gst_pad_remove_probe (pad, GST_PAD_PROBE_INFO_ID (info));
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/* push current event back into the queue */
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g_queue_push_tail (&effects, gst_object_ref (cur_effect));
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/* take next effect from the queue */
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next = g_queue_pop_head (&effects);
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if (next == NULL) {
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GST_DEBUG_OBJECT (pad, "no more effects");
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g_main_loop_quit (loop);
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return GST_PAD_PROBE_DROP;
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}
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g_print ("Switching from '%s' to '%s'..\n", GST_OBJECT_NAME (cur_effect),
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GST_OBJECT_NAME (next));
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gst_element_set_state (cur_effect, GST_STATE_NULL);
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/* remove unlinks automatically */
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GST_DEBUG_OBJECT (pipeline, "removing %" GST_PTR_FORMAT, cur_effect);
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gst_bin_remove (GST_BIN (pipeline), cur_effect);
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GST_DEBUG_OBJECT (pipeline, "adding %" GST_PTR_FORMAT, next);
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gst_bin_add (GST_BIN (pipeline), next);
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GST_DEBUG_OBJECT (pipeline, "linking..");
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gst_element_link_many (conv_before, next, conv_after, NULL);
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gst_element_set_state (next, GST_STATE_PLAYING);
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cur_effect = next;
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GST_DEBUG_OBJECT (pipeline, "done");
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return GST_PAD_PROBE_DROP;
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}
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static GstPadProbeReturn
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pad_probe_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data)
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{
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GstPad *srcpad, *sinkpad;
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GST_DEBUG_OBJECT (pad, "pad is blocked now");
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/* remove the probe first */
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gst_pad_remove_probe (pad, GST_PAD_PROBE_INFO_ID (info));
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/* install new probe for EOS */
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srcpad = gst_element_get_static_pad (cur_effect, "src");
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gst_pad_add_probe (srcpad, GST_PAD_PROBE_TYPE_BLOCK |
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GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, event_probe_cb, user_data, NULL);
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gst_object_unref (srcpad);
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/* push EOS into the element, the probe will be fired when the
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* EOS leaves the effect and it has thus drained all of its data */
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sinkpad = gst_element_get_static_pad (cur_effect, "sink");
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gst_pad_send_event (sinkpad, gst_event_new_eos ());
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gst_object_unref (sinkpad);
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return GST_PAD_PROBE_OK;
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}
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static gboolean
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timeout_cb (gpointer user_data)
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{
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gst_pad_add_probe (blockpad, GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM,
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pad_probe_cb, user_data, NULL);
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return TRUE;
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}
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static gboolean
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bus_cb (GstBus * bus, GstMessage * msg, gpointer user_data)
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{
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GMainLoop *loop = user_data;
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switch (GST_MESSAGE_TYPE (msg)) {
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case GST_MESSAGE_ERROR:{
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GError *err = NULL;
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gchar *dbg;
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gst_message_parse_error (msg, &err, &dbg);
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gst_object_default_error (msg->src, err, dbg);
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g_clear_error (&err);
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g_free (dbg);
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g_main_loop_quit (loop);
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break;
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}
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default:
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break;
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}
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return TRUE;
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}
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int
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main (int argc, char **argv)
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{
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GOptionEntry options[] = {
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{"effects", 'e', 0, G_OPTION_ARG_STRING, &opt_effects,
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"Effects to use (comma-separated list of element names)", NULL},
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{NULL}
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};
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GOptionContext *ctx;
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GError *err = NULL;
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GMainLoop *loop;
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GstElement *src, *q1, *q2, *effect, *filter1, *filter2, *sink;
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gchar **effect_names, **e;
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ctx = g_option_context_new ("");
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g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE);
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g_option_context_add_group (ctx, gst_init_get_option_group ());
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if (!g_option_context_parse (ctx, &argc, &argv, &err)) {
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g_print ("Error initializing: %s\n", err->message);
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g_option_context_free (ctx);
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g_clear_error (&err);
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return 1;
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}
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g_option_context_free (ctx);
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GST_FIXME ("Multiple things to check/fix, see source code");
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if (opt_effects != NULL)
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effect_names = g_strsplit (opt_effects, ",", -1);
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else
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effect_names = g_strsplit (DEFAULT_EFFECTS, ",", -1);
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for (e = effect_names; e != NULL && *e != NULL; ++e) {
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GstElement *el;
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el = gst_element_factory_make (*e, NULL);
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if (el) {
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g_print ("Adding effect '%s'\n", *e);
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g_queue_push_tail (&effects, el);
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}
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}
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pipeline = gst_pipeline_new ("pipeline");
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src = gst_element_factory_make ("videotestsrc", NULL);
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g_object_set (src, "is-live", TRUE, NULL);
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filter1 = gst_element_factory_make ("capsfilter", NULL);
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gst_util_set_object_arg (G_OBJECT (filter1), "caps",
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"video/x-raw, width=320, height=240, "
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"format={ I420, YV12, YUY2, UYVY, AYUV, Y41B, Y42B, "
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"YVYU, Y444, v210, v216, NV12, NV21, UYVP, A420, YUV9, YVU9, IYU1 }");
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q1 = gst_element_factory_make ("queue", NULL);
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blockpad = gst_element_get_static_pad (q1, "src");
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conv_before = gst_element_factory_make ("videoconvert", NULL);
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effect = g_queue_pop_head (&effects);
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cur_effect = effect;
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conv_after = gst_element_factory_make ("videoconvert", NULL);
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q2 = gst_element_factory_make ("queue", NULL);
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filter2 = gst_element_factory_make ("capsfilter", NULL);
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gst_util_set_object_arg (G_OBJECT (filter2), "caps",
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"video/x-raw, width=320, height=240, "
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"format={ RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR }");
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sink = gst_element_factory_make ("ximagesink", NULL);
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gst_bin_add_many (GST_BIN (pipeline), src, filter1, q1, conv_before, effect,
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conv_after, q2, sink, NULL);
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gst_element_link_many (src, filter1, q1, conv_before, effect, conv_after,
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q2, sink, NULL);
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gst_element_set_state (pipeline, GST_STATE_PLAYING);
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loop = g_main_loop_new (NULL, FALSE);
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gst_bus_add_watch (GST_ELEMENT_BUS (pipeline), bus_cb, loop);
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g_timeout_add_seconds (1, timeout_cb, loop);
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g_main_loop_run (loop);
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gst_element_set_state (pipeline, GST_STATE_NULL);
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gst_object_unref (pipeline);
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return 0;
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}
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