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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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f4b49b70e1
Original commit message from CVS: Add audioconvert and audioscale elements and add an error handler
82 lines
2.1 KiB
C
82 lines
2.1 KiB
C
#include <stdlib.h>
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#include <gst/gst.h>
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static void
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error_cb (GstElement * bin, GstElement * error_element, GError * error,
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const gchar * debug_msg, gpointer user_data)
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{
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gboolean *p_got_error = (gboolean *) user_data;
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g_printerr ("An error occured: %s\n", error->message);
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*p_got_error = 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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GstElement *bin, *filesrc, *decoder, *audioconvert, *audioscale, *osssink;
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gboolean got_error;
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gst_init (&argc, &argv);
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if (argc != 2) {
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g_print ("usage: %s <mp3 file>\n", argv[0]);
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exit (-1);
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}
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/* create a new bin to hold the elements */
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bin = gst_pipeline_new ("pipeline");
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g_assert (bin);
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/* create a disk reader */
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filesrc = gst_element_factory_make ("filesrc", "disk_source");
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g_assert (filesrc);
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g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
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/* now it's time to get the decoder */
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decoder = gst_element_factory_make ("mad", "decode");
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if (!decoder) {
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g_print ("could not find plugin \"mad\"");
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return -1;
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}
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/* create standard converters to make sure the decoded
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* samples are converted into a format our audio sink
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* understands (if necessary) */
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audioconvert = gst_element_factory_make ("audioconvert", "audioconvert");
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audioscale = gst_element_factory_make ("audioscale", "audioscale");
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g_assert (audioconvert && audioscale);
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/* and an audio sink */
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osssink = gst_element_factory_make ("osssink", "play_audio");
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g_assert (osssink);
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/* add objects to the main pipeline */
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gst_bin_add_many (GST_BIN (bin), filesrc, decoder, audioconvert, audioscale,
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osssink, NULL);
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/* link the elements */
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if (!gst_element_link_many (filesrc, decoder, audioconvert, audioscale,
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osssink, NULL))
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g_error ("gst_element_link_many() failed!");
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/* check for errors */
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got_error = FALSE;
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g_signal_connect (bin, "error", G_CALLBACK (error_cb), &got_error);
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/* start playing */
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gst_element_set_state (bin, GST_STATE_PLAYING);
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while (!got_error && gst_bin_iterate (GST_BIN (bin))) {
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;
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}
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/* stop the bin */
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gst_element_set_state (bin, GST_STATE_NULL);
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/* free */
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g_object_unref (bin);
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exit (0);
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}
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