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https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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64fd2b265f
Add a `num-lookahead` property that will 'prepare' a number of fragments in advance of the playhead if they have been deactivated or closed by a limited number of `num-open-fragments`. It can help to avoid any play stalls reading the indexes or headers of the next file from high-latency media or on resource limited machines. Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/7053>
104 lines
2.5 KiB
C
104 lines
2.5 KiB
C
#include <gst/gst.h>
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#include "gstsplitmuxpartreader.h"
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#include "gstsplitmuxsrc.h"
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GST_DEBUG_CATEGORY_EXTERN (splitmux_debug);
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static const gchar *const path = "out001.mp4";
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typedef struct _CustomData
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{
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GstSplitMuxPartReader *reader;
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GMainLoop *main_loop;
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GstBus *bus;
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} CustomData;
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static void
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part_prepared (GstSplitMuxPartReader * reader)
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{
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g_print ("Part prepared\n");
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}
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static gboolean
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handle_message (GstBus * bus, GstMessage * msg, CustomData * data)
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{
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GError *err;
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gchar *debug_info;
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switch (GST_MESSAGE_TYPE (msg)) {
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case GST_MESSAGE_ERROR:
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gst_message_parse_error (msg, &err, &debug_info);
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g_print ("Error received from element %s: %s\n",
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GST_OBJECT_NAME (msg->src), err->message);
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g_print ("Debugging information: %s\n", debug_info ? debug_info : "none");
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g_clear_error (&err);
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g_free (debug_info);
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g_main_loop_quit (data->main_loop);
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break;
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case GST_MESSAGE_EOS:
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g_print ("End-Of-Stream reached.\n");
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g_main_loop_quit (data->main_loop);
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break;
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default:
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break;
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}
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return TRUE;
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}
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static gboolean
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start_reader (CustomData * data)
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{
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g_print ("Preparing part reader for %s\n", path);
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gst_splitmux_part_reader_prepare (data->reader);
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return FALSE;
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}
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static GstPad *
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handle_get_pad (GstSplitMuxPartReader * reader, GstPad * src_pad,
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CustomData * data)
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{
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/* Create a dummy target pad for the reader */
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GstPad *new_pad = g_object_new (SPLITMUX_TYPE_SRC_PAD,
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"name", GST_PAD_NAME (src_pad), "direction", GST_PAD_SRC, NULL);
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g_print ("Creating new dummy pad %s\n", GST_PAD_NAME (src_pad));
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return new_pad;
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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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CustomData data;
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gst_init (&argc, &argv);
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data.main_loop = g_main_loop_new (NULL, FALSE);
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data.reader = g_object_new (GST_TYPE_SPLITMUX_PART_READER, NULL);
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data.bus = gst_element_get_bus (GST_ELEMENT_CAST (data.reader));
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/* Listen for bus messages */
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gst_bus_add_watch (data.bus, (GstBusFunc) handle_message, &data);
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gst_splitmux_part_reader_set_location (data.reader, path);
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/* Connect to prepare signal */
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g_signal_connect (data.reader, "prepared", (GCallback) part_prepared, &data);
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gst_splitmux_part_reader_set_callbacks (data.reader, &data,
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(GstSplitMuxPartReaderPadCb) handle_get_pad, NULL, NULL);
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g_idle_add ((GSourceFunc) start_reader, &data);
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/* Run mainloop */
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g_main_loop_run (data.main_loop);
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gst_splitmux_part_reader_unprepare (data.reader);
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g_main_loop_unref (data.main_loop);
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gst_object_unref (data.bus);
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g_object_unref (data.reader);
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return 0;
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}
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