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140 lines
4.6 KiB
C
140 lines
4.6 KiB
C
/*
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* gstvaapiencode_mpeg2.c - VA-API MPEG2 encoder
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*
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* Copyright (C) 2012-2014 Intel Corporation
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* Author: Guangxin Xu <guangxin.xu@intel.com>
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* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public License
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* as published by the Free Software Foundation; either version 2.1
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* of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA
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*/
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/**
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* SECTION:element-vaapimpeg2enc
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* @short_description: A VA-API based MPEG2 video encoder
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*
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* Encodes raw video streams into MPEG2 bitstreams.
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*
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* ## Example launch line
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*
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* |[
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* gst-launch-1.0 -ev videotestsrc num-buffers=60 ! timeoverlay ! vaapimpeg2enc ! matroskamux ! filesink location=test.mkv
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* ]|
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*/
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#include "gstcompat.h"
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#include <gst/vaapi/gstvaapidisplay.h>
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#include <gst/vaapi/gstvaapiencoder_mpeg2.h>
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#include <gst/vaapi/gstvaapiutils_mpeg2.h>
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#include "gstvaapiencode_mpeg2.h"
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#include "gstvaapipluginutil.h"
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#include "gstvaapivideomemory.h"
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#define GST_PLUGIN_NAME "vaapimpeg2enc"
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#define GST_PLUGIN_DESC "A VA-API based MPEG-2 video encoder"
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GST_DEBUG_CATEGORY_STATIC (gst_vaapi_mpeg2_encode_debug);
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#define GST_CAT_DEFAULT gst_vaapi_mpeg2_encode_debug
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#define GST_CODEC_CAPS \
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"video/mpeg, mpegversion = (int) 2, " \
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"systemstream = (boolean) false"
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#define EXTRA_FORMATS {}
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/* mpeg2 encode */
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GST_VAAPI_ENCODE_REGISTER_TYPE (mpeg2, MPEG2, Mpeg2, EXTRA_FORMATS,
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gst_vaapi_utils_mpeg2_get_profile_string);
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static void
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gst_vaapiencode_mpeg2_init (GstVaapiEncodeMpeg2 * encode)
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{
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/* nothing to do here */
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}
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static void
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gst_vaapiencode_mpeg2_finalize (GObject * object)
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{
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G_OBJECT_CLASS (gst_vaapiencode_mpeg2_parent_class)->finalize (object);
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}
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static GstCaps *
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gst_vaapiencode_mpeg2_get_caps (GstVaapiEncode * base_encode)
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{
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GstCaps *caps;
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caps = gst_caps_from_string (GST_CODEC_CAPS);
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/* XXX: update profile and level information */
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return caps;
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}
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static GstVaapiEncoder *
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gst_vaapiencode_mpeg2_alloc_encoder (GstVaapiEncode * base,
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GstVaapiDisplay * display)
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{
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return gst_vaapi_encoder_mpeg2_new (display);
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}
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static void
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gst_vaapiencode_mpeg2_class_init (GstVaapiEncodeMpeg2Class * klass,
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gpointer data)
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{
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GObjectClass *const object_class = G_OBJECT_CLASS (klass);
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GstElementClass *const element_class = GST_ELEMENT_CLASS (klass);
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GstVaapiEncodeClass *const encode_class = GST_VAAPIENCODE_CLASS (klass);
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GstCaps *sink_caps = ((GstVaapiEncodeInitData *) data)->sink_caps;
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GstCaps *src_caps = ((GstVaapiEncodeInitData *) data)->src_caps;
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GstPadTemplate *templ;
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GstCaps *static_caps;
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gpointer encoder_class;
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object_class->finalize = gst_vaapiencode_mpeg2_finalize;
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object_class->set_property = gst_vaapiencode_set_property_subclass;
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object_class->get_property = gst_vaapiencode_get_property_subclass;
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encode_class->get_caps = gst_vaapiencode_mpeg2_get_caps;
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encode_class->alloc_encoder = gst_vaapiencode_mpeg2_alloc_encoder;
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gst_element_class_set_static_metadata (element_class,
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"VA-API MPEG-2 encoder",
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"Codec/Encoder/Video/Hardware",
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GST_PLUGIN_DESC, "Guangxin Xu <guangxin.xu@intel.com>");
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/* sink pad */
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g_assert (sink_caps);
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static_caps = gst_caps_from_string (GST_VAAPI_ENCODE_STATIC_SINK_CAPS);
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templ =
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gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, sink_caps);
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gst_pad_template_set_documentation_caps (templ, static_caps);
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gst_element_class_add_pad_template (element_class, templ);
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gst_caps_unref (static_caps);
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gst_caps_unref (sink_caps);
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/* src pad */
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g_assert (src_caps);
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static_caps = gst_caps_from_string (GST_CODEC_CAPS);
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templ = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, src_caps);
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gst_pad_template_set_documentation_caps (templ, static_caps);
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gst_element_class_add_pad_template (element_class, templ);
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gst_caps_unref (static_caps);
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gst_caps_unref (src_caps);
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encoder_class = g_type_class_ref (GST_TYPE_VAAPI_ENCODER_MPEG2);
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g_assert (encoder_class);
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gst_vaapiencode_class_install_properties (encode_class, encoder_class);
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g_type_class_unref (encoder_class);
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}
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