| /* GStreamer dynamic effect change test app |
| * Copyright (C) 2012 Tim-Philipp Müller <tim centricular net> |
| |
| * 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. |
| * |
| * Based on python script by Thiago Sousa Santos |
| */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| |
| #include <gst/gst.h> |
| |
| static gchar *opt_effects = NULL; |
| |
| #define DEFAULT_EFFECTS "identity,exclusion,navigationtest," \ |
| "agingtv,videoflip,vertigotv,gaussianblur,shagadelictv,edgetv" |
| |
| static GstPad *blockpad; |
| static GstElement *conv_before; |
| static GstElement *conv_after; |
| static GstElement *cur_effect; |
| static GstElement *pipeline; |
| |
| static GQueue effects = G_QUEUE_INIT; |
| |
| static GstPadProbeReturn |
| event_probe_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data) |
| { |
| GMainLoop *loop = user_data; |
| GstElement *next; |
| |
| if (GST_EVENT_TYPE (GST_PAD_PROBE_INFO_DATA (info)) != GST_EVENT_EOS) |
| return GST_PAD_PROBE_OK; |
| |
| gst_pad_remove_probe (pad, GST_PAD_PROBE_INFO_ID (info)); |
| |
| /* push current event back into the queue */ |
| g_queue_push_tail (&effects, gst_object_ref (cur_effect)); |
| /* take next effect from the queue */ |
| next = g_queue_pop_head (&effects); |
| if (next == NULL) { |
| GST_DEBUG_OBJECT (pad, "no more effects"); |
| g_main_loop_quit (loop); |
| return GST_PAD_PROBE_DROP; |
| } |
| |
| g_print ("Switching from '%s' to '%s'..\n", GST_OBJECT_NAME (cur_effect), |
| GST_OBJECT_NAME (next)); |
| |
| gst_element_set_state (cur_effect, GST_STATE_NULL); |
| |
| /* remove unlinks automatically */ |
| GST_DEBUG_OBJECT (pipeline, "removing %" GST_PTR_FORMAT, cur_effect); |
| gst_bin_remove (GST_BIN (pipeline), cur_effect); |
| |
| GST_DEBUG_OBJECT (pipeline, "adding %" GST_PTR_FORMAT, next); |
| gst_bin_add (GST_BIN (pipeline), next); |
| |
| GST_DEBUG_OBJECT (pipeline, "linking.."); |
| gst_element_link_many (conv_before, next, conv_after, NULL); |
| |
| gst_element_set_state (next, GST_STATE_PLAYING); |
| |
| cur_effect = next; |
| GST_DEBUG_OBJECT (pipeline, "done"); |
| |
| return GST_PAD_PROBE_DROP; |
| } |
| |
| static GstPadProbeReturn |
| pad_probe_cb (GstPad * pad, GstPadProbeInfo * info, gpointer user_data) |
| { |
| GstPad *srcpad, *sinkpad; |
| |
| GST_DEBUG_OBJECT (pad, "pad is blocked now"); |
| |
| /* remove the probe first */ |
| gst_pad_remove_probe (pad, GST_PAD_PROBE_INFO_ID (info)); |
| |
| /* install new probe for EOS */ |
| srcpad = gst_element_get_static_pad (cur_effect, "src"); |
| gst_pad_add_probe (srcpad, GST_PAD_PROBE_TYPE_BLOCK | |
| GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM, event_probe_cb, user_data, NULL); |
| gst_object_unref (srcpad); |
| |
| /* push EOS into the element, the probe will be fired when the |
| * EOS leaves the effect and it has thus drained all of its data */ |
| sinkpad = gst_element_get_static_pad (cur_effect, "sink"); |
| gst_pad_send_event (sinkpad, gst_event_new_eos ()); |
| gst_object_unref (sinkpad); |
| |
| return GST_PAD_PROBE_OK; |
| } |
| |
| static gboolean |
| timeout_cb (gpointer user_data) |
| { |
| gst_pad_add_probe (blockpad, GST_PAD_PROBE_TYPE_BLOCK_DOWNSTREAM, |
| pad_probe_cb, user_data, NULL); |
| |
| return TRUE; |
| } |
| |
| static gboolean |
| bus_cb (GstBus * bus, GstMessage * msg, gpointer user_data) |
| { |
| GMainLoop *loop = user_data; |
| |
| switch (GST_MESSAGE_TYPE (msg)) { |
| case GST_MESSAGE_ERROR:{ |
| GError *err = NULL; |
| gchar *dbg; |
| |
| gst_message_parse_error (msg, &err, &dbg); |
| gst_object_default_error (msg->src, err, dbg); |
| g_clear_error (&err); |
| g_free (dbg); |
| g_main_loop_quit (loop); |
| break; |
| } |
| default: |
| break; |
| } |
| return TRUE; |
| } |
| |
| int |
| main (int argc, char **argv) |
| { |
| GOptionEntry options[] = { |
| {"effects", 'e', 0, G_OPTION_ARG_STRING, &opt_effects, |
| "Effects to use (comma-separated list of element names)", NULL}, |
| {NULL} |
| }; |
| GOptionContext *ctx; |
| GError *err = NULL; |
| GMainLoop *loop; |
| GstElement *src, *q1, *q2, *effect, *filter1, *filter2, *sink; |
| gchar **effect_names, **e; |
| |
| ctx = g_option_context_new (""); |
| g_option_context_add_main_entries (ctx, options, GETTEXT_PACKAGE); |
| 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); |
| return 1; |
| } |
| g_option_context_free (ctx); |
| |
| GST_FIXME ("Multiple things to check/fix, see source code"); |
| |
| if (opt_effects != NULL) |
| effect_names = g_strsplit (opt_effects, ",", -1); |
| else |
| effect_names = g_strsplit (DEFAULT_EFFECTS, ",", -1); |
| |
| for (e = effect_names; e != NULL && *e != NULL; ++e) { |
| GstElement *el; |
| |
| el = gst_element_factory_make (*e, NULL); |
| if (el) { |
| g_print ("Adding effect '%s'\n", *e); |
| g_queue_push_tail (&effects, el); |
| } |
| } |
| |
| pipeline = gst_pipeline_new ("pipeline"); |
| |
| src = gst_element_factory_make ("videotestsrc", NULL); |
| g_object_set (src, "is-live", TRUE, NULL); |
| |
| filter1 = gst_element_factory_make ("capsfilter", NULL); |
| gst_util_set_object_arg (G_OBJECT (filter1), "caps", |
| "video/x-raw, width=320, height=240, " |
| "format={ I420, YV12, YUY2, UYVY, AYUV, Y41B, Y42B, " |
| "YVYU, Y444, v210, v216, NV12, NV21, UYVP, A420, YUV9, YVU9, IYU1 }"); |
| |
| q1 = gst_element_factory_make ("queue", NULL); |
| |
| blockpad = gst_element_get_static_pad (q1, "src"); |
| |
| conv_before = gst_element_factory_make ("videoconvert", NULL); |
| |
| effect = g_queue_pop_head (&effects); |
| cur_effect = effect; |
| |
| conv_after = gst_element_factory_make ("videoconvert", NULL); |
| |
| q2 = gst_element_factory_make ("queue", NULL); |
| |
| filter2 = gst_element_factory_make ("capsfilter", NULL); |
| gst_util_set_object_arg (G_OBJECT (filter2), "caps", |
| "video/x-raw, width=320, height=240, " |
| "format={ RGBx, BGRx, xRGB, xBGR, RGBA, BGRA, ARGB, ABGR, RGB, BGR }"); |
| |
| sink = gst_element_factory_make ("ximagesink", NULL); |
| |
| gst_bin_add_many (GST_BIN (pipeline), src, filter1, q1, conv_before, effect, |
| conv_after, q2, sink, NULL); |
| |
| gst_element_link_many (src, filter1, q1, conv_before, effect, conv_after, |
| q2, sink, NULL); |
| |
| gst_element_set_state (pipeline, GST_STATE_PLAYING); |
| |
| loop = g_main_loop_new (NULL, FALSE); |
| |
| gst_bus_add_watch (GST_ELEMENT_BUS (pipeline), bus_cb, loop); |
| |
| g_timeout_add_seconds (1, timeout_cb, loop); |
| |
| g_main_loop_run (loop); |
| |
| gst_element_set_state (pipeline, GST_STATE_NULL); |
| gst_object_unref (pipeline); |
| |
| return 0; |
| } |