author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 16 Apr 2010 15:15:52 +0300 | |
changeset 8 | 4a7fac7dd34a |
parent 0 | 0e761a78d257 |
child 30 | 7e817e7e631c |
permissions | -rw-r--r-- |
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/* GStreamer |
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu> |
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* |
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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., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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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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#ifdef HAVE_UNISTD_H |
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#include <unistd.h> |
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#endif |
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#ifdef HAVE_STDLIB_H |
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#include <stdlib.h> /* exit */ |
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#endif |
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#include <gst/gst.h> |
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static void |
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new_decoded_pad_cb (GstElement * decodebin, GstPad * new_pad, gboolean last, |
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GstElement * pipeline) |
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{ |
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GstElement *fakesink; |
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GstPad *sinkpad; |
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fakesink = gst_element_factory_make ("fakesink", NULL); |
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gst_bin_add (GST_BIN (pipeline), fakesink); |
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sinkpad = gst_element_get_static_pad (fakesink, "sink"); |
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if (GST_PAD_LINK_FAILED (gst_pad_link (new_pad, sinkpad))) { |
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g_warning ("Failed to link %s:%s to %s:%s", GST_DEBUG_PAD_NAME (new_pad), |
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GST_DEBUG_PAD_NAME (sinkpad)); |
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gst_bin_remove (GST_BIN (pipeline), fakesink); |
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} else { |
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gst_element_set_state (fakesink, GST_STATE_PAUSED); |
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} |
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} |
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static void |
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show_error (const gchar * errmsg, GstBus * bus) |
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{ |
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GstMessage *msg; |
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GError *err = NULL; |
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gchar *dbg = NULL; |
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msg = gst_bus_poll (bus, GST_MESSAGE_ERROR, 0); |
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if (msg) { |
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g_assert (GST_MESSAGE_TYPE (msg) == GST_MESSAGE_ERROR); |
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gst_message_parse_error (msg, &err, &dbg); |
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} |
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g_print ("ERROR: %s\n", errmsg); |
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g_print (" %s\n", (err) ? err->message : ""); |
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if (dbg) { |
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g_print ("\ndebug: %s\n\n", dbg); |
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g_free (dbg); |
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} |
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if (err) |
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g_error_free (err); |
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} |
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gint |
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main (gint argc, gchar * argv[]) |
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{ |
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GstElement *pipeline, *filesrc, *decodebin; |
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GstStateChangeReturn res; |
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GstIterator *it; |
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GstBus *bus; |
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gpointer data; |
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gst_init (&argc, &argv); |
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pipeline = gst_pipeline_new ("pipeline"); |
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filesrc = gst_element_factory_make ("filesrc", "filesrc"); |
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g_assert (filesrc); |
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decodebin = gst_element_factory_make ("decodebin", "decodebin"); |
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g_assert (decodebin); |
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gst_bin_add_many (GST_BIN (pipeline), filesrc, decodebin, NULL); |
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gst_element_link (filesrc, decodebin); |
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if (argc < 2) { |
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g_print ("usage: %s <filenames>\n", argv[0]); |
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exit (-1); |
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} |
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102 |
if (!g_str_has_prefix (argv[1], "file://")) { |
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103 |
g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL); |
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104 |
} else { |
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105 |
g_object_set (G_OBJECT (filesrc), "location", argv[1] + 7, NULL); |
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106 |
} |
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107 |
|
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108 |
/* we've got to connect fakesinks to newly decoded pads to make sure |
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109 |
* buffers have actually been flowing over those pads and caps have |
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110 |
* been set on them. decodebin might insert internal queues and |
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111 |
* without fakesinks it's pot-luck what caps we get from the pad, because |
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112 |
* it depends on whether the queues have started pushing buffers yet or not. |
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113 |
* With fakesinks we make sure that the pipeline doesn't go to PAUSED state |
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114 |
* before each fakesink has a buffer queued. */ |
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115 |
g_signal_connect (decodebin, "new-decoded-pad", |
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116 |
G_CALLBACK (new_decoded_pad_cb), pipeline); |
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117 |
|
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118 |
bus = gst_element_get_bus (pipeline); |
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119 |
|
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120 |
g_print ("pause..\n"); |
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121 |
res = gst_element_set_state (pipeline, GST_STATE_PAUSED); |
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122 |
if (res == GST_STATE_CHANGE_FAILURE) { |
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123 |
show_error ("Could not go to PAUSED state", bus); |
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124 |
exit (-1); |
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125 |
} |
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126 |
g_print ("waiting..\n"); |
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127 |
res = gst_element_get_state (pipeline, NULL, NULL, GST_CLOCK_TIME_NONE); |
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128 |
if (res != GST_STATE_CHANGE_SUCCESS) { |
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129 |
show_error ("Failed to complete state change to PAUSED", bus); |
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130 |
exit (-1); |
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131 |
} |
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132 |
g_print ("stats..\n"); |
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133 |
|
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134 |
it = gst_element_iterate_src_pads (decodebin); |
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135 |
while (gst_iterator_next (it, &data) == GST_ITERATOR_OK) { |
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|
136 |
GstPad *pad = GST_PAD (data); |
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|
137 |
GstCaps *caps; |
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138 |
gchar *str; |
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139 |
GstQuery *query; |
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140 |
|
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141 |
g_print ("stream %s:\n", GST_OBJECT_NAME (pad)); |
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|
142 |
|
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143 |
caps = gst_pad_get_caps (pad); |
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144 |
str = gst_caps_to_string (caps); |
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145 |
g_print (" caps: %s\n", str); |
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|
146 |
g_free (str); |
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|
147 |
gst_caps_unref (caps); |
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|
148 |
|
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149 |
query = gst_query_new_duration (GST_FORMAT_TIME); |
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150 |
if (gst_pad_query (pad, query)) { |
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151 |
gint64 duration; |
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152 |
|
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153 |
gst_query_parse_duration (query, NULL, &duration); |
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|
154 |
|
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155 |
g_print (" duration: %" GST_TIME_FORMAT "\n", GST_TIME_ARGS (duration)); |
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|
156 |
} |
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157 |
gst_query_unref (query); |
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|
158 |
|
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159 |
gst_object_unref (pad); |
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|
160 |
} |
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|
161 |
gst_iterator_free (it); |
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|
162 |
|
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163 |
return 0; |
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164 |
} |