gstreamer/ext/vpx/plugin.c
John-Mark Bell d9cedee042 vp8enc: finish support for temporally scaled encoding
- introduce two new properties:

    * temporal-scalability-layer-flags:

      Provide fine-grained control of layer encoding to the
      outside world. The flags sequence should be a multiple of
      the periodicity and is indexed by a running count of encoded
      frames modulo the sequence length.

    * temporal-scalability-layer-sync-flags:

      Specify the pattern of inter-layer synchronisation (i.e.
      which of the frames generated by the layer encoding
      specification represent an inter-layer synchronisation).
      There must be one entry per entry in
      temporal-scalability-layer-flags.

  - apply temporal scalability settings and expose as buffer
    metadata.

    This allows the codec to allocate a given frame to the correct
    internal bitrate allocator. Additionally, all the
    non-bitstream metadata needed to payload a temporally scaled
    stream is now attached to each output buffer as a
    GstVideoVP8Meta.

  - add unit test for temporally scaled encoding.

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-good/-/merge_requests/728>
2020-10-16 09:25:10 +00:00

69 lines
1.8 KiB
C

/* VP8
* Copyright (C) 2006 David Schleef <ds@schleef.org>
* Copyright (C) 2010 Entropy Wave Inc
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gst/gst.h>
#include "gstvp8dec.h"
#include "gstvp8enc.h"
#include "gstvp9dec.h"
#include "gstvp9enc.h"
static gboolean
plugin_init (GstPlugin * plugin)
{
static const gchar *tags[] = { NULL };
#ifdef HAVE_VP8_DECODER
gst_element_register (plugin, "vp8dec", GST_RANK_PRIMARY,
gst_vp8_dec_get_type ());
#endif
#ifdef HAVE_VP8_ENCODER
gst_element_register (plugin, "vp8enc", GST_RANK_PRIMARY,
gst_vp8_enc_get_type ());
#endif
#ifdef HAVE_VP9_DECODER
gst_element_register (plugin, "vp9dec", GST_RANK_PRIMARY,
gst_vp9_dec_get_type ());
#endif
#ifdef HAVE_VP9_ENCODER
gst_element_register (plugin, "vp9enc", GST_RANK_PRIMARY,
gst_vp9_enc_get_type ());
#endif
if (!gst_meta_register_custom ("GstVP8Meta", tags, NULL, NULL, NULL))
return FALSE;
return TRUE;
}
GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
GST_VERSION_MINOR,
vpx,
"VP8 plugin",
plugin_init, VERSION, "LGPL", GST_PACKAGE_NAME, GST_PACKAGE_ORIGIN)