mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2025-02-20 21:16:24 +00:00
Added playback tutorial 2, fixed connection speed in playback tutorial 1
This commit is contained in:
unknown
parent
1e20154e2b
commit
a8e8e02ef2
5 changed files with 319 additions and 1 deletions
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@ -54,7 +54,7 @@ int main(int argc, char *argv[]) {
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g_object_set (data.playbin2, "flags", flags, NULL);
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/* Set connection speed. This will affect some internal decisions of playbin2 */
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g_object_set (data.playbin2, "connection-speed", 56000, NULL);
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g_object_set (data.playbin2, "connection-speed", 56, NULL);
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/* Add a bus watch, so we get notified when a message arrives */
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bus = gst_element_get_bus (data.playbin2);
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220
gst-sdk/tutorials/playback-tutorial-2.c
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220
gst-sdk/tutorials/playback-tutorial-2.c
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@ -0,0 +1,220 @@
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#include <gst/gst.h>
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/* Structure to contain all our information, so we can pass it around */
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typedef struct _CustomData {
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GstElement *playbin2; /* Our one and only element */
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gint n_video; /* Number of embedded video streams */
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gint n_audio; /* Number of embedded audio streams */
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gint n_text; /* Number of embedded subtitle streams */
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gint current_video; /* Currently playing video stream */
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gint current_audio; /* Currently playing audio stream */
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gint current_text; /* Currently playing subtitle stream */
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GMainLoop *main_loop; /* GLib's Main Loop */
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} CustomData;
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/* playbin2 flags */
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typedef enum {
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GST_PLAY_FLAG_VIDEO = (1 << 0), /* We want video output */
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GST_PLAY_FLAG_AUDIO = (1 << 1), /* We want audio output */
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GST_PLAY_FLAG_TEXT = (1 << 2) /* We want subtitle output */
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} GstPlayFlags;
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/* Forward definition for the message and keyboard processing functions */
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static gboolean handle_message (GstBus *bus, GstMessage *msg, CustomData *data);
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static gboolean handle_keyboard (GIOChannel *source, GIOCondition cond, CustomData *data);
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int main(int argc, char *argv[]) {
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CustomData data;
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GstBus *bus;
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GstStateChangeReturn ret;
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gint flags;
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GIOChannel *io_stdin;
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/* Initialize GStreamer */
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gst_init (&argc, &argv);
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/* Create the elements */
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data.playbin2 = gst_element_factory_make ("playbin2", "playbin2");
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if (!data.playbin2) {
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g_printerr ("Not all elements could be created.\n");
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return -1;
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}
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/* Set the URI to play */
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g_object_set (data.playbin2, "uri", "http://docs.gstreamer.com/media/sintel_trailer-480p.ogv", NULL);
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/* Set the subtitle URI to play and some font description */
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g_object_set (data.playbin2, "suburi", "http://docs.gstreamer.com/media/sintel_trailer_gr.srt", NULL);
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g_object_set (data.playbin2, "subtitle-font-desc", "Sans, 18", NULL);
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/* Set flags to show Audio, Video and Subtitles */
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g_object_get (data.playbin2, "flags", &flags, NULL);
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flags |= GST_PLAY_FLAG_VIDEO | GST_PLAY_FLAG_AUDIO | GST_PLAY_FLAG_TEXT;
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g_object_set (data.playbin2, "flags", flags, NULL);
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/* Add a bus watch, so we get notified when a message arrives */
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bus = gst_element_get_bus (data.playbin2);
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gst_bus_add_watch (bus, (GstBusFunc)handle_message, &data);
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/* Add a keyboard watch so we get notified of keystrokes */
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#ifdef _WIN32
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io_stdin = g_io_channel_win32_new_fd (fileno (stdin));
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#else
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io_stdin = g_io_channel_unix_new (fileno (stdin));
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#endif
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g_io_add_watch (io_stdin, G_IO_IN, (GIOFunc)handle_keyboard, &data);
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/* Start playing */
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ret = gst_element_set_state (data.playbin2, 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 (data.playbin2);
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return -1;
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}
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/* Create a GLib Main Loop and set it to run */
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data.main_loop = g_main_loop_new (NULL, FALSE);
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g_main_loop_run (data.main_loop);
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/* Free resources */
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g_main_loop_unref (data.main_loop);
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g_io_channel_unref (io_stdin);
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gst_object_unref (bus);
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gst_element_set_state (data.playbin2, GST_STATE_NULL);
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gst_object_unref (data.playbin2);
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return 0;
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}
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/* Extract some metadata from the streams and print it on the screen */
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static void analyze_streams (CustomData *data) {
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gint i;
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GstTagList *tags;
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gchar *str;
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guint rate;
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/* Read some properties */
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g_object_get (data->playbin2, "n-video", &data->n_video, NULL);
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g_object_get (data->playbin2, "n-audio", &data->n_audio, NULL);
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g_object_get (data->playbin2, "n-text", &data->n_text, NULL);
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g_print ("%d video stream(s), %d audio stream(s), %d text stream(s)\n",
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data->n_video, data->n_audio, data->n_text);
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g_print ("\n");
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for (i = 0; i < data->n_video; i++) {
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tags = NULL;
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/* Retrieve the stream's video tags */
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g_signal_emit_by_name (data->playbin2, "get-video-tags", i, &tags);
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if (tags) {
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g_print ("video stream %d:\n", i);
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gst_tag_list_get_string (tags, GST_TAG_VIDEO_CODEC, &str);
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g_print (" codec: %s\n", str ? str : "unknown");
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g_free (str);
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gst_tag_list_free (tags);
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}
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}
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g_print ("\n");
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for (i = 0; i < data->n_audio; i++) {
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tags = NULL;
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/* Retrieve the stream's audio tags */
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g_signal_emit_by_name (data->playbin2, "get-audio-tags", i, &tags);
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if (tags) {
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g_print ("audio stream %d:\n", i);
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if (gst_tag_list_get_string (tags, GST_TAG_AUDIO_CODEC, &str)) {
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g_print (" codec: %s\n", str);
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g_free (str);
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}
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if (gst_tag_list_get_string (tags, GST_TAG_LANGUAGE_CODE, &str)) {
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g_print (" language: %s\n", str);
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g_free (str);
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}
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if (gst_tag_list_get_uint (tags, GST_TAG_BITRATE, &rate)) {
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g_print (" bitrate: %d\n", rate);
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}
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gst_tag_list_free (tags);
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}
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}
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g_print ("\n");
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for (i = 0; i < data->n_text; i++) {
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tags = NULL;
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/* Retrieve the stream's subtitle tags */
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g_print ("subtitle stream %d:\n", i);
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g_signal_emit_by_name (data->playbin2, "get-text-tags", i, &tags);
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if (tags) {
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if (gst_tag_list_get_string (tags, GST_TAG_LANGUAGE_CODE, &str)) {
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g_print (" language: %s\n", str);
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g_free (str);
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}
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gst_tag_list_free (tags);
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} else {
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g_print (" no tags found\n");
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}
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}
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g_object_get (data->playbin2, "current-video", &data->current_video, NULL);
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g_object_get (data->playbin2, "current-audio", &data->current_audio, NULL);
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g_object_get (data->playbin2, "current-text", &data->current_text, NULL);
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g_print ("\n");
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g_print ("Currently playing video stream %d, audio stream %d and subtitle stream %d\n",
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data->current_video, data->current_audio, data->current_text);
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g_print ("Type any number and hit ENTER to select a different subtitle stream\n");
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}
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/* Process messages from GStreamer */
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static gboolean handle_message (GstBus *bus, GstMessage *msg, CustomData *data) {
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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_printerr ("Error received from element %s: %s\n", GST_OBJECT_NAME (msg->src), err->message);
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g_printerr ("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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case GST_MESSAGE_STATE_CHANGED: {
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GstState old_state, new_state, pending_state;
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gst_message_parse_state_changed (msg, &old_state, &new_state, &pending_state);
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if (GST_MESSAGE_SRC (msg) == GST_OBJECT (data->playbin2)) {
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if (new_state == GST_STATE_PLAYING) {
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/* Once we are in the playing state, analyze the streams */
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analyze_streams (data);
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}
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}
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} break;
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}
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/* We want to keep receiving messages */
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return TRUE;
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}
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/* Process keyboard input */
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static gboolean handle_keyboard (GIOChannel *source, GIOCondition cond, CustomData *data) {
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gchar *str = NULL;
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if (g_io_channel_read_line (source, &str, NULL, NULL, NULL) == G_IO_STATUS_NORMAL) {
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int index = atoi (str);
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if (index < 0 || index >= data->n_text) {
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g_printerr ("Index out of bounds\n");
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} else {
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/* If the input was a valid subtitle stream index, set the current subtitle stream */
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g_print ("Setting current subtitle stream to %d\n", index);
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g_object_set (data->playbin2, "current-text", index, NULL);
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}
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}
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g_free (str);
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return TRUE;
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}
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@ -0,0 +1,86 @@
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<?xml version="1.0" encoding="utf-8"?>
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<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ItemGroup Label="ProjectConfigurations">
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<ProjectConfiguration Include="Debug|Win32">
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<Configuration>Debug</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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<ProjectConfiguration Include="Release|Win32">
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<Configuration>Release</Configuration>
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<Platform>Win32</Platform>
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</ProjectConfiguration>
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</ItemGroup>
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<PropertyGroup Label="Globals">
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<ProjectGuid>{4319F5D7-039A-44B5-B1A7-507DC627B24D}</ProjectGuid>
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<Keyword>Win32Proj</Keyword>
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<RootNamespace>playbacktutorial2</RootNamespace>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>true</UseDebugLibraries>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<WholeProgramOptimization>true</WholeProgramOptimization>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
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<ImportGroup Label="ExtensionSettings">
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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<Import Project="..\..\libs\gstreamer-0.10.props" />
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<Import Project="..\..\libs\msvc\x86.props" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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<Import Project="..\..\libs\gstreamer-0.10.props" />
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<Import Project="..\..\libs\msvc\x86.props" />
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</ImportGroup>
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<PropertyGroup Label="UserMacros" />
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<LinkIncremental>true</LinkIncremental>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<LinkIncremental>false</LinkIncremental>
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</PropertyGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
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<ClCompile>
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<PrecompiledHeader>
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</PrecompiledHeader>
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<WarningLevel>Level3</WarningLevel>
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<Optimization>Disabled</Optimization>
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<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
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<ClCompile>
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<WarningLevel>Level3</WarningLevel>
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<PrecompiledHeader>
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</PrecompiledHeader>
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<Optimization>MaxSpeed</Optimization>
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<FunctionLevelLinking>true</FunctionLevelLinking>
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<IntrinsicFunctions>true</IntrinsicFunctions>
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<PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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<OptimizeReferences>true</OptimizeReferences>
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</Link>
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</ItemDefinitionGroup>
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<ItemGroup>
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<ClCompile Include="..\..\..\..\gst-sdk\tutorials\playback-tutorial-2.c" />
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</ItemGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
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<ImportGroup Label="ExtensionTargets">
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</ImportGroup>
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</Project>
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@ -0,0 +1,6 @@
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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<ItemGroup>
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<ClCompile Include="..\..\..\..\gst-sdk\tutorials\playback-tutorial-2.c" />
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</ItemGroup>
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</Project>
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@ -13,6 +13,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "basic-tutorial-5", "basic-t
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "playback-tutorial-1", "playback-tutorial-1\playback-tutorial-1.vcxproj", "{474353B0-D353-4DB7-A9EE-E210D1ED954B}"
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "playback-tutorial-2", "playback-tutorial-2\playback-tutorial-2.vcxproj", "{4319F5D7-039A-44B5-B1A7-507DC627B24D}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Win32 = Debug|Win32
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@ -43,6 +45,10 @@ Global
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{474353B0-D353-4DB7-A9EE-E210D1ED954B}.Debug|Win32.Build.0 = Debug|Win32
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{474353B0-D353-4DB7-A9EE-E210D1ED954B}.Release|Win32.ActiveCfg = Release|Win32
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{474353B0-D353-4DB7-A9EE-E210D1ED954B}.Release|Win32.Build.0 = Release|Win32
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{4319F5D7-039A-44B5-B1A7-507DC627B24D}.Debug|Win32.ActiveCfg = Debug|Win32
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{4319F5D7-039A-44B5-B1A7-507DC627B24D}.Debug|Win32.Build.0 = Debug|Win32
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{4319F5D7-039A-44B5-B1A7-507DC627B24D}.Release|Win32.ActiveCfg = Release|Win32
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{4319F5D7-039A-44B5-B1A7-507DC627B24D}.Release|Win32.Build.0 = Release|Win32
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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