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349aa7e2e6
Original commit message from CVS: * examples/controller/audio-example.c: (main): * examples/queue/queue.c: (event_loop): * gst/base/gstbasetransform.h: * gst/gstelement.c: (gst_element_send_event): * gst/gstevent.h: * gst/gstpad.c: (gst_pad_send_event): fixing examples fixing docs typos changing log priority in error situations
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
#include <stdlib.h>
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#include <gst/gst.h>
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/* This example uses the queue element to create a buffer between 2 elements.
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* The scheduler automatically uses 2 threads, 1 to feed and another to consume
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* data from the queue buffer
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*/
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/* Event loop to listen to events posted on the GstBus from the pipeline. Exits
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* on EOS or ERROR events
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*/
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static void
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event_loop (GstElement * pipe)
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{
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GstBus *bus;
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GstMessage *message = NULL;
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bus = gst_element_get_bus (GST_ELEMENT (pipe));
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while (TRUE) {
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message = gst_bus_poll (bus, GST_MESSAGE_ANY, -1);
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g_assert (message != NULL);
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switch (message->type) {
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case GST_MESSAGE_EOS:
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gst_message_unref (message);
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return;
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case GST_MESSAGE_WARNING:
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case GST_MESSAGE_ERROR:{
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GError *gerror;
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gchar *debug;
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gst_message_parse_error (message, &gerror, &debug);
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gst_object_default_error (GST_MESSAGE_SRC (message), gerror, debug);
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gst_message_unref (message);
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g_error_free (gerror);
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g_free (debug);
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return;
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}
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default:
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gst_message_unref (message);
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break;
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}
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}
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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 *filesrc, *audiosink, *decode, *queue;
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GstElement *pipeline;
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gst_init (&argc, &argv);
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if (argc != 2) {
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g_print ("usage: %s <filename>\n", argv[0]);
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exit (-1);
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}
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/* create a new pipeline to hold the elements */
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pipeline = gst_pipeline_new ("pipeline");
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g_assert (pipeline != NULL);
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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 != NULL);
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g_object_set (G_OBJECT (filesrc), "location", argv[1], NULL);
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decode = gst_element_factory_make ("mad", "decode");
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g_assert (decode != NULL);
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queue = gst_element_factory_make ("queue", "queue");
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g_assert (queue != NULL);
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/* and an audio sink */
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audiosink = gst_element_factory_make ("alsasink", "play_audio");
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g_assert (audiosink != NULL);
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/* add objects to the main pipeline */
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gst_bin_add_many (GST_BIN (pipeline), filesrc, decode, queue, audiosink,
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NULL);
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gst_element_link_many (filesrc, decode, queue, audiosink, NULL);
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/* start playing */
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gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_PLAYING);
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/* Listen for EOS */
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event_loop (pipeline);
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gst_element_set_state (GST_ELEMENT (pipeline), GST_STATE_NULL);
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exit (0);
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}
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