mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-10 03:19:40 +00:00
Added Playback tutorial 3.
This commit is contained in:
Xavi Artigas
parent
63177bf882
commit
b4f718acfd
4 changed files with 272 additions and 0 deletions
161
gst-sdk/tutorials/playback-tutorial-3.c
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161
gst-sdk/tutorials/playback-tutorial-3.c
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#include <gst/gst.h>
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#include <string.h>
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#define GRAPH_LENGTH 80
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/* playbin2 flags */
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typedef enum {
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GST_PLAY_FLAG_DOWNLOAD = (1 << 7) /* Enable progressive download buffering for selected formats. */
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} GstPlayFlags;
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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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gint buffering_level;
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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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/* 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, &data->buffering_level);
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/* Wait until buffering is complete before start/resume playing */
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if (data->buffering_level < 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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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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static gboolean refresh_ui (CustomData *data) {
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GstQuery *query;
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gboolean result;
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query = gst_query_new_buffering (GST_FORMAT_PERCENT);
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result = gst_element_query (data->pipeline, query);
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if (result) {
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gint n_ranges, range, i;
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gchar graph[GRAPH_LENGTH + 1];
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GstFormat format = GST_FORMAT_TIME;
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gint64 position = 0, duration = 0;
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memset (graph, ' ', GRAPH_LENGTH);
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graph[GRAPH_LENGTH] = '\0';
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n_ranges = gst_query_get_n_buffering_ranges (query);
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for (range = 0; range < n_ranges; range++) {
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gint64 start, stop;
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gst_query_parse_nth_buffering_range (query, range, &start, &stop);
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start = start * GRAPH_LENGTH / 100;
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stop = stop * GRAPH_LENGTH / 100;
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for (i = (gint)start; i < stop; i++)
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graph [i] = '-';
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}
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if (gst_element_query_position (data->pipeline, &format, &position) &&
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GST_CLOCK_TIME_IS_VALID (position) &&
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gst_element_query_duration (data->pipeline, &format, &duration) &&
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GST_CLOCK_TIME_IS_VALID (duration)) {
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i = (gint)(GRAPH_LENGTH * (double)position / (double)(duration + 1));
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graph [i] = data->buffering_level < 100 ? 'X' : '>';
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}
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g_print ("[%s]", graph);
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if (data->buffering_level < 100) {
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g_print (" Buffering: %3d%%", data->buffering_level);
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} else {
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g_print (" ");
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}
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g_print ("\r");
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}
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return TRUE;
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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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guint flags;
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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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data.buffering_level = 100;
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/* Build the pipeline */
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pipeline = gst_parse_launch ("playbin2 uri=http://docs.gstreamer.com/media/sintel_trailer-480p.webm", NULL);
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// pipeline = gst_parse_launch ("playbin2 uri=http://micro.autom.teithe.gr/~vivia/oldmovies/peta.mp4", NULL);
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bus = gst_element_get_bus (pipeline);
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/* Set the download flag */
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g_object_get (pipeline, "flags", &flags, NULL);
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flags |= GST_PLAY_FLAG_DOWNLOAD;
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g_object_set (pipeline, "flags", flags, NULL);
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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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/* Register a function that GLib will call every second */
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g_timeout_add_seconds (1, (GSourceFunc)refresh_ui, &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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g_print ("\n");
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return 0;
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}
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@ -0,0 +1,95 @@
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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="Debug|x64">
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<Configuration>Debug</Configuration>
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<Platform>x64</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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<ProjectConfiguration Include="Release|x64">
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<Configuration>Release</Configuration>
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<Platform>x64</Platform>
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</ProjectConfiguration>
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</ItemGroup>
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<ItemGroup>
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<ClCompile Include="..\..\playback-tutorial-3.c" />
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</ItemGroup>
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<PropertyGroup Label="Globals">
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<Keyword>Win32Proj</Keyword>
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<ProjectGuid>{0342A79A-3522-416B-A4F8-58F5664B8415}</ProjectGuid>
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<TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
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<PropertyGroup Condition="'$(Configuration)'=='Debug'" 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="'$(Configuration)'=='Release'" Label="Configuration">
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<ConfigurationType>Application</ConfigurationType>
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<UseDebugLibraries>false</UseDebugLibraries>
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<WholeProgramOptimization>true</WholeProgramOptimization>
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<CharacterSet>Unicode</CharacterSet>
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</PropertyGroup>
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<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
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<ImportGroup Label="ExtensionSettings">
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Platform)'=='Win32'">
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<Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
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<Import Project="$(GSTREAMER_SDK_ROOT_X86)\share\vs\2010\libs\gstreamer-0.10.props" Condition="exists('$(GSTREAMER_SDK_ROOT_X86)\share\vs\2010\libs\gstreamer-0.10.props')" />
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<Import Project="$(GSTREAMER_SDK_ROOT_X86)\share\vs\2010\msvc\x86.props" Condition="exists('$(GSTREAMER_SDK_ROOT_X86)\share\vs\2010\msvc\x86.props')" />
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</ImportGroup>
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<ImportGroup Label="PropertySheets" Condition="'$(Platform)'=='x64'">
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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="$(GSTREAMER_SDK_ROOT_X86_64)\share\vs\2010\libs\gstreamer-0.10.props" Condition="exists('$(GSTREAMER_SDK_ROOT_X86_64)\share\vs\2010\libs\gstreamer-0.10.props')" />
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<Import Project="$(GSTREAMER_SDK_ROOT_X86_64)\share\vs\2010\msvc\x86_64.props" Condition="exists('$(GSTREAMER_SDK_ROOT_X86_64)\share\vs\2010\msvc\x86_64.props')" />
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</ImportGroup>
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<PropertyGroup Label="UserMacros" />
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<PropertyGroup Condition="'$(Configuration)'=='Debug'">
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<LinkIncremental>true</LinkIncremental>
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</PropertyGroup>
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<PropertyGroup Condition="'$(Configuration)'=='Release'">
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<LinkIncremental>false</LinkIncremental>
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</PropertyGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
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<ClCompile>
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<PrecompiledHeader>
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</PrecompiledHeader>
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<WarningLevel>Level3</WarningLevel>
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<Optimization>Disabled</Optimization>
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<PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
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</ClCompile>
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<Link>
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<SubSystem>Console</SubSystem>
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<GenerateDebugInformation>true</GenerateDebugInformation>
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<AdditionalDependencies>%(AdditionalDependencies)</AdditionalDependencies>
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<AdditionalLibraryDirectories>%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
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</Link>
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</ItemDefinitionGroup>
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<ItemDefinitionGroup Condition="'$(Configuration)'=='Release'">
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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>false</GenerateDebugInformation>
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<EnableCOMDATFolding>true</EnableCOMDATFolding>
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</Link>
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</ItemDefinitionGroup>
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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="..\..\playback-tutorial-3.c" />
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</ItemGroup>
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</Project>
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@ -25,6 +25,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "basic-tutorial-9", "basic-t
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "basic-tutorial-12", "basic-tutorial-12\basic-tutorial-12.vcxproj", "{A2E63C29-3375-4930-B7D3-2F23EC824EAF}"
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "playback-tutorial-3", "playback-tutorial-3\playback-tutorial-3.vcxproj", "{0342A79A-3522-416B-A4F8-58F5664B8415}"
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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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@ -129,6 +131,14 @@ Global
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{A2E63C29-3375-4930-B7D3-2F23EC824EAF}.Release|Win32.Build.0 = Release|Win32
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{A2E63C29-3375-4930-B7D3-2F23EC824EAF}.Release|x64.ActiveCfg = Release|x64
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{A2E63C29-3375-4930-B7D3-2F23EC824EAF}.Release|x64.Build.0 = Release|x64
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{0342A79A-3522-416B-A4F8-58F5664B8415}.Debug|Win32.ActiveCfg = Debug|Win32
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{0342A79A-3522-416B-A4F8-58F5664B8415}.Debug|Win32.Build.0 = Debug|Win32
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{0342A79A-3522-416B-A4F8-58F5664B8415}.Debug|x64.ActiveCfg = Debug|x64
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{0342A79A-3522-416B-A4F8-58F5664B8415}.Debug|x64.Build.0 = Debug|x64
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{0342A79A-3522-416B-A4F8-58F5664B8415}.Release|Win32.ActiveCfg = Release|Win32
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{0342A79A-3522-416B-A4F8-58F5664B8415}.Release|Win32.Build.0 = Release|Win32
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{0342A79A-3522-416B-A4F8-58F5664B8415}.Release|x64.ActiveCfg = Release|x64
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{0342A79A-3522-416B-A4F8-58F5664B8415}.Release|x64.Build.0 = Release|x64
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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