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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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995c529609
Original commit message from CVS:
add comments to show what pipeline is being constructed.
change threadstate3 to be { { fakesrc ! fakesink } } which doesn't change state once it has started
68 lines
1.6 KiB
C
68 lines
1.6 KiB
C
#include <gst/gst.h>
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/* this pipeline is:
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* { filesrc ! mad ! osssink }
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*/
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/* eos will be called when the src element has an end of stream */
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void eos(GstElement *element, gpointer data)
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{
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GstThread *thread = GST_THREAD(data);
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g_print("have eos, quitting\n");
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/* stop the bin */
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gst_element_set_state(GST_ELEMENT(thread), GST_STATE_NULL);
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gst_main_quit();
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}
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int main(int argc,char *argv[])
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{
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GstElement *filesrc, *osssink;
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GstElement *thread;
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GstElement *mad;
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gint x;
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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 thread to hold the elements */
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thread = gst_thread_new("thread");
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g_assert(thread != 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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g_signal_connect(G_OBJECT(filesrc),"eos",
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G_CALLBACK(eos), thread);
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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 != NULL);
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/* did i mention that this is an mp3 player? */
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mad = gst_element_factory_make("mad", "mp3_decoder");
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g_assert(mad != NULL);
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gst_bin_add_many (GST_BIN(thread), filesrc, mad, osssink, NULL);
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gst_element_connect_many (filesrc, mad, osssink, NULL);
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for (x = 0 ; x < 10 ; x++){
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g_print("playing %d\n", x);
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gst_element_set_state(GST_ELEMENT(thread), GST_STATE_PLAYING);
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sleep(2);
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g_print("pausing %d\n", x);
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gst_element_set_state(GST_ELEMENT(thread), GST_STATE_PAUSED);
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sleep(2);
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}
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exit(0);
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}
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