NAME

  GStreamer1 - Bindings for GStreamer 1.0, the open source multimedia framework

SYNOPSIS

    use GStreamer1;

    GStreamer1::init([ $0, @ARGV ]);
    my $pipeline = GStreamer1::parse_launch( "playbin uri=$URI" );

    $pipeline->set_state( "playing" );

    my $bus = $pipeline->get_bus;
    my $msg = $bus->timed_pop_filtered( GStreamer1::CLOCK_TIME_NONE,
        [ 'error', 'eos' ]);

    $pipeline->set_state( "null" );

DESCRIPTION

GStreamer1 implements a framework that allows for processing and encoding of multimedia sources in a manner similar to a shell pipeline.

Because it's introspection-based, most of the classes follow directly from the C API. Therefore, most of the documentation is by example rather than a full breakdown of the class structure.

PORTING FROM GStreamer

If you're porting from the original GStreamer module, here are some things to keep in mind.

ElementFactory

The original GStreamer had a version of ElementFactory->make() which could be called with a list of gst plugins and associated names. GStreamer1 may add a similar method in the future. For now, the bindings directly follow from the C interface, so they take only one at a time.

Example:

    my $rpi        = GStreamer1::ElementFactory::make( rpicamsrc => 'and_who' );
    my $h264parse  = GStreamer1::ElementFactory::make( h264parse => 'are_you' );
    my $capsfilter = GStreamer1::ElementFactory::make(
        capsfilter => 'the_proud_lord_said' );
    my $avdec_h264 = GStreamer1::ElementFactory::make(
        avdec_h264 => 'that_i_should_bow_so_low' );
    my $jpegenc    = GStreamer1::ElementFactory::make( jpegenc => 'only_a_cat' );
    my $fakesink   = GStreamer1::ElementFactory::make(
        fakesink => 'of_a_different_coat' );

Adding/linking

The original GStreamer added methods for Pipeline->add() and Element->link() that could take lists of objects. GStreamer1 may add similar methods in the future. For now, the bindings directly follow from the C interface, so they take only one object at a time.

Example:

    my @link = ( $rpi, $h264parse, $capsfilter, $avdec_h264, $jpegenc, $fakesink );
    $pipeline->add( $_ ) for @link;
    foreach my $i (0 .. $#link) {
        last if ! exists $link[$i+1];
        my $this = $link[$i];
        my $next = $link[$i+1];
        $this->link( $next );
    }

EXAMPLES

See the examples/ directory in the distribution.

SEE ALSO

GStreamer - Perl bindings to the old 0.10 version of GStreamer

http://gstreamer.freedesktop.org/

SPECIAL THANKS

To Torsten Schönfeld for pointing me in the right direction on creating this module.

LICENSE

Copyright (c) 2014 Timm Murray All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice, this list of 
      conditions and the following disclaimer.
    * Redistributions in binary form must reproduce the above copyright notice, this list of
      conditions and the following disclaimer in the documentation and/or other materials 
      provided with the distribution.

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