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/*
* Copyright (C) 2010 Ole André Vadla Ravnås <oravnas@cisco.com>
*
* 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., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include "vth264encbin.h"
#include <string.h>
#include <gst/video/video.h>
#define VT_H264_ENC_BIN_DEFAULT_BITRATE 768
GST_DEBUG_CATEGORY_STATIC (gst_vt_h264_enc_bin_debug);
#define GST_CAT_DEFAULT gst_vt_h264_enc_bin_debug
enum
{
PROP_0,
PROP_BITRATE
};
enum
{
H264PARSE_OUTPUT_FORMAT_AVC_SAMPLE = 0,
H264PARSE_OUTPUT_FORMAT_BYTE_STREAM = 1,
H264PARSE_OUTPUT_FORMAT_INPUT = 2
};
static GstStaticPadTemplate vth264encbin_sink_template =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (GST_VIDEO_CAPS_YUV ("NV12"))
);
static GstStaticPadTemplate vth264encbin_src_template =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS ("video/x-h264, stream-format = (string) byte-stream"));
#define TAA_VT_H264_ENC_BIN_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE ((obj), GST_TYPE_VT_H264_ENC_BIN, \
GstVTH264EncBinPrivate))
struct _GstVTH264EncBinPrivate
{
GstElement *encoder;
GstElement *parser;
};
GST_BOILERPLATE (GstVTH264EncBin, gst_vt_h264_enc_bin, GstBin, GST_TYPE_BIN);
static void
gst_vt_h264_enc_bin_base_init (gpointer gclass)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (gclass);
gst_element_class_set_details_simple (element_class,
"VTH264EncBin",
"Encoder/Video",
"VideoToolbox H.264 encoder bin",
"Ole André Vadla Ravnås <oravnas@cisco.com>");
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&vth264encbin_sink_template));
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&vth264encbin_src_template));
}
static void
gst_vt_h264_enc_bin_init (GstVTH264EncBin * self, GstVTH264EncBinClass * gclass)
{
GstVTH264EncBinPrivate *priv;
GstPad *encoder_sinkpad, *parser_srcpad, *ghost_pad;
self->priv = priv = TAA_VT_H264_ENC_BIN_GET_PRIVATE (self);
priv->encoder = gst_element_factory_make ("vtenc_h264", "encoder");
priv->parser = gst_element_factory_make ("h264parse", "parser");
gst_bin_add_many (GST_BIN_CAST (self), priv->encoder, priv->parser, NULL);
gst_element_link (priv->encoder, priv->parser);
encoder_sinkpad = gst_element_get_static_pad (priv->encoder, "sink");
ghost_pad = gst_ghost_pad_new_from_template ("sink", encoder_sinkpad,
gst_static_pad_template_get (&vth264encbin_sink_template));
gst_object_unref (encoder_sinkpad);
gst_element_add_pad (GST_ELEMENT_CAST (self), ghost_pad);
parser_srcpad = gst_element_get_static_pad (priv->parser, "src");
ghost_pad = gst_ghost_pad_new_from_template ("src", parser_srcpad,
gst_static_pad_template_get (&vth264encbin_src_template));
gst_object_unref (parser_srcpad);
gst_element_add_pad (GST_ELEMENT_CAST (self), ghost_pad);
g_object_set (priv->encoder, "usage", 6, NULL);
g_object_set (priv->parser,
"output-format", H264PARSE_OUTPUT_FORMAT_BYTE_STREAM,
"split-packetized", TRUE, NULL);
}
static void
gst_vt_h264_enc_bin_get_property (GObject * obj, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstVTH264EncBin *self = GST_VT_H264_ENC_BIN_CAST (obj);
switch (prop_id) {
case PROP_BITRATE:
g_object_get_property (G_OBJECT (self->priv->encoder),
g_param_spec_get_name (pspec), value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, prop_id, pspec);
break;
}
}
static void
gst_vt_h264_enc_bin_set_property (GObject * obj, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstVTH264EncBin *self = GST_VT_H264_ENC_BIN_CAST (obj);
switch (prop_id) {
case PROP_BITRATE:
g_object_set_property (G_OBJECT (self->priv->encoder),
g_param_spec_get_name (pspec), value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, prop_id, pspec);
break;
}
}
static void
gst_vt_h264_enc_bin_class_init (GstVTH264EncBinClass * klass)
{
GObjectClass *gobject_class = (GObjectClass *) klass;
gobject_class->get_property = gst_vt_h264_enc_bin_get_property;
gobject_class->set_property = gst_vt_h264_enc_bin_set_property;
g_type_class_add_private (klass, sizeof (GstVTH264EncBinPrivate));
g_object_class_install_property (gobject_class, PROP_BITRATE,
g_param_spec_uint ("bitrate", "Bitrate",
"Target video bitrate in kbps",
1, G_MAXUINT, VT_H264_ENC_BIN_DEFAULT_BITRATE,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT | G_PARAM_STATIC_STRINGS));
GST_DEBUG_CATEGORY_INIT (gst_vt_h264_enc_bin_debug,
"vth264encbin", 0, "VideoToolbox H.264 encoder bin");
}
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