mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-12-24 09:10:36 +00:00
Added basic tutorial 13.
This commit is contained in:
Xavi Artigas
parent
3b6437cbcf
commit
ecff617bf3
4 changed files with 223 additions and 0 deletions
112
gst-sdk/tutorials/basic-tutorial-13.c
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112
gst-sdk/tutorials/basic-tutorial-13.c
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@ -0,0 +1,112 @@
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#include <string.h>
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#include <gst/gst.h>
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typedef struct _CustomData {
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GstElement *pipeline;
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GMainLoop *loop;
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gboolean playing; /* Playing or Paused */
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gdouble rate; /* Current playback rate */
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gboolean backward; /* Forward or backwards */
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} CustomData;
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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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return TRUE;
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}
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switch (g_ascii_tolower (str[0])) {
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case 'p':
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data->playing = !data->playing;
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gst_element_set_state (data->pipeline, data->playing ? GST_STATE_PLAYING : GST_STATE_PAUSED);
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g_print ("Setting state to %s\n", data->playing ? "PLAYING" : "PAUSE");
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break;
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case 's':
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if (g_ascii_isupper (str[0])) {
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data->rate *= 2.0;
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} else {
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data->rate /= 2.0;
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}
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gst_element_send_event (data->pipeline,
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gst_event_new_step (GST_FORMAT_TIME, -1, data->rate, TRUE, FALSE));
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g_print ("Current rate: %g\n", data->rate);
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break;
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case 'd':
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data->backward = !data->backward;
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gst_element_send_event (data->pipeline,
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gst_event_new_seek (data->backward ? -data->rate : data->rate,
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GST_FORMAT_TIME, GST_SEEK_FLAG_NONE, GST_SEEK_TYPE_NONE, 0, GST_SEEK_TYPE_NONE, 0));
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g_print ("Going %s\n", data->backward ? "backwards" : "forward");
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break;
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case 'n':
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gst_element_send_event (data->pipeline,
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gst_event_new_step (GST_FORMAT_BUFFERS, 1, data->rate, TRUE, FALSE));
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g_print ("Stepping one frame\n");
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break;
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case 'q':
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g_main_loop_quit (data->loop);
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break;
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default:
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break;
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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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int main(int argc, char *argv[]) {
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CustomData data;
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GstStateChangeReturn ret;
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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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/* Initialize our data structure */
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memset (&data, 0, sizeof (data));
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/* Print usage map */
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g_print (
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"USAGE: Choose one of the following options, then press enter:\n"
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" 'P' to toggle between PAUSE and PLAY\n"
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" 'S' to increase playback speed, 's' to decrease playback speed\n"
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" 'D' to toggle playback direction\n"
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" 'N' to move to next frame (in the current direction, better in PAUSE)\n"
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" 'Q' to quit\n");
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/* Build the pipeline */
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data.pipeline = gst_parse_launch ("playbin2 uri=http://docs.gstreamer.com/media/sintel_trailer-480p.webm", NULL);
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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.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 (data.pipeline);
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return -1;
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}
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data.playing = TRUE;
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data.rate = 1.0;
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/* Create a GLib Main Loop and set it to run */
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data.loop = g_main_loop_new (NULL, FALSE);
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g_main_loop_run (data.loop);
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/* Free resources */
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g_main_loop_unref (data.loop);
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g_io_channel_unref (io_stdin);
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gst_element_set_state (data.pipeline, GST_STATE_NULL);
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gst_object_unref (data.pipeline);
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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="..\..\basic-tutorial-13.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>{6D962544-E7A2-450B-998B-6D09B17ACCB3}</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="..\..\basic-tutorial-13.c" />
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</ItemGroup>
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</Project>
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@ -35,6 +35,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "playback-tutorial-6", "play
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "playback-tutorial-7", "playback-tutorial-7\playback-tutorial-7.vcxproj", "{9C06FA1E-E571-42EA-B4AA-B91F9DA77D5A}"
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EndProject
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Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "basic-tutorial-13", "basic-tutorial-13\basic-tutorial-13.vcxproj", "{6D962544-E7A2-450B-998B-6D09B17ACCB3}"
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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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@ -179,6 +181,14 @@ Global
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{9C06FA1E-E571-42EA-B4AA-B91F9DA77D5A}.Release|Win32.Build.0 = Release|Win32
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{9C06FA1E-E571-42EA-B4AA-B91F9DA77D5A}.Release|x64.ActiveCfg = Release|x64
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{9C06FA1E-E571-42EA-B4AA-B91F9DA77D5A}.Release|x64.Build.0 = Release|x64
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{6D962544-E7A2-450B-998B-6D09B17ACCB3}.Debug|Win32.ActiveCfg = Debug|Win32
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{6D962544-E7A2-450B-998B-6D09B17ACCB3}.Debug|Win32.Build.0 = Debug|Win32
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{6D962544-E7A2-450B-998B-6D09B17ACCB3}.Debug|x64.ActiveCfg = Debug|x64
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{6D962544-E7A2-450B-998B-6D09B17ACCB3}.Debug|x64.Build.0 = Debug|x64
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{6D962544-E7A2-450B-998B-6D09B17ACCB3}.Release|Win32.ActiveCfg = Release|Win32
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{6D962544-E7A2-450B-998B-6D09B17ACCB3}.Release|Win32.Build.0 = Release|Win32
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{6D962544-E7A2-450B-998B-6D09B17ACCB3}.Release|x64.ActiveCfg = Release|x64
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{6D962544-E7A2-450B-998B-6D09B17ACCB3}.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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