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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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99 lines
2.8 KiB
C
99 lines
2.8 KiB
C
#include <gst/gst.h>
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#include <string.h>
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typedef struct _CustomData {
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gboolean is_live;
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GstElement *pipeline;
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GMainLoop *loop;
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} CustomData;
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static void cb_message (GstBus *bus, GstMessage *msg, CustomData *data) {
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switch (GST_MESSAGE_TYPE (msg)) {
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case GST_MESSAGE_ERROR: {
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GError *err;
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gchar *debug;
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gst_message_parse_error (msg, &err, &debug);
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g_print ("Error: %s\n", err->message);
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g_error_free (err);
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g_free (debug);
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gst_element_set_state (data->pipeline, GST_STATE_READY);
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g_main_loop_quit (data->loop);
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break;
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}
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case GST_MESSAGE_EOS:
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/* end-of-stream */
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gst_element_set_state (data->pipeline, GST_STATE_READY);
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g_main_loop_quit (data->loop);
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break;
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case GST_MESSAGE_BUFFERING: {
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gint percent = 0;
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/* If the stream is live, we do not care about buffering. */
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if (data->is_live) break;
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gst_message_parse_buffering (msg, &percent);
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g_print ("Buffering (%3d%%)\r", percent);
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/* Wait until buffering is complete before start/resume playing */
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if (percent < 100)
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gst_element_set_state (data->pipeline, GST_STATE_PAUSED);
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else
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gst_element_set_state (data->pipeline, GST_STATE_PLAYING);
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break;
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}
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case GST_MESSAGE_CLOCK_LOST:
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/* Get a new clock */
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gst_element_set_state (data->pipeline, GST_STATE_PAUSED);
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gst_element_set_state (data->pipeline, GST_STATE_PLAYING);
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break;
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default:
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/* Unhandled message */
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break;
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}
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}
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int main(int argc, char *argv[]) {
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GstElement *pipeline;
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GstBus *bus;
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GstStateChangeReturn ret;
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GMainLoop *main_loop;
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CustomData data;
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/* Initialize GStreamer */
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gst_init (&argc, &argv);
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/* Initialize our data structure */
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memset (&data, 0, sizeof (data));
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/* Build the pipeline */
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pipeline = gst_parse_launch ("playbin uri=http://docs.gstreamer.com/media/sintel_trailer-480p.webm", NULL);
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bus = gst_element_get_bus (pipeline);
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/* Start playing */
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ret = gst_element_set_state (pipeline, GST_STATE_PLAYING);
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if (ret == GST_STATE_CHANGE_FAILURE) {
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g_printerr ("Unable to set the pipeline to the playing state.\n");
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gst_object_unref (pipeline);
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return -1;
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} else if (ret == GST_STATE_CHANGE_NO_PREROLL) {
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data.is_live = TRUE;
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}
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main_loop = g_main_loop_new (NULL, FALSE);
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data.loop = main_loop;
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data.pipeline = pipeline;
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gst_bus_add_signal_watch (bus);
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g_signal_connect (bus, "message", G_CALLBACK (cb_message), &data);
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g_main_loop_run (main_loop);
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/* Free resources */
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g_main_loop_unref (main_loop);
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gst_object_unref (bus);
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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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