gstreamer/gst/vaapi/gstvaapiencode_mpeg2.c
Gwenole Beauchesne 9ab6037847 plugins: use G_PARAM_STATIC_STRINGS.
This avoids a few string copies during initialization.
2013-11-28 17:35:44 +01:00

239 lines
7.7 KiB
C

/*
* gstvaapiencode_mpeg2.c - VA-API MPEG2 encoder
*
* Copyright (C) 2012-2013 Intel Corporation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "gst/vaapi/sysdeps.h"
#include <gst/vaapi/gstvaapidisplay.h>
#include <gst/vaapi/gstvaapiencoder_mpeg2.h>
#include "gst/vaapi/gstvaapiencoder_mpeg2_priv.h"
#include "gstvaapiencode_mpeg2.h"
#include "gstvaapipluginutil.h"
#if GST_CHECK_VERSION(1,0,0)
#include "gstvaapivideomemory.h"
#endif
#define GST_PLUGIN_NAME "vaapiencode_mpeg2"
#define GST_PLUGIN_DESC "A VA-API based MPEG-2 video encoder"
GST_DEBUG_CATEGORY_STATIC (gst_vaapi_mpeg2_encode_debug);
#define GST_CAT_DEFAULT gst_vaapi_mpeg2_encode_debug
#define GST_CAPS_CODEC(CODEC) CODEC "; "
static const char gst_vaapiencode_mpeg2_sink_caps_str[] =
#if GST_CHECK_VERSION(1,1,0)
GST_VIDEO_CAPS_MAKE_WITH_FEATURES(GST_CAPS_FEATURE_MEMORY_VAAPI_SURFACE,
"{ ENCODED, NV12, I420, YV12 }") ", "
#else
GST_VAAPI_SURFACE_CAPS ", "
#endif
GST_CAPS_INTERLACED_FALSE "; "
#if GST_CHECK_VERSION(1,0,0)
GST_VIDEO_CAPS_MAKE (GST_VIDEO_FORMATS_ALL) ", "
#else
"video/x-raw-yuv, "
"width = (int) [ 1, MAX ], "
"height = (int) [ 1, MAX ], "
#endif
GST_CAPS_INTERLACED_FALSE;
static const char gst_vaapiencode_mpeg2_src_caps_str[] =
GST_CAPS_CODEC ("video/mpeg,"
"mpegversion = (int) 2, " "systemstream = (boolean) false");
static GstStaticPadTemplate gst_vaapiencode_mpeg2_sink_factory =
GST_STATIC_PAD_TEMPLATE ("sink",
GST_PAD_SINK,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (gst_vaapiencode_mpeg2_sink_caps_str));
static GstStaticPadTemplate gst_vaapiencode_mpeg2_src_factory =
GST_STATIC_PAD_TEMPLATE ("src",
GST_PAD_SRC,
GST_PAD_ALWAYS,
GST_STATIC_CAPS (gst_vaapiencode_mpeg2_src_caps_str));
/* mpeg2 encode */
G_DEFINE_TYPE (GstVaapiEncodeMpeg2, gst_vaapiencode_mpeg2, GST_TYPE_VAAPIENCODE)
enum
{
PROP_0,
PROP_QUANTIZER,
PROP_KEY_PERIOD,
PROP_MAX_BFRAMES
};
static void
gst_vaapiencode_mpeg2_init (GstVaapiEncodeMpeg2 * encode)
{
GstVaapiEncode *const base_encode = GST_VAAPIENCODE_CAST (encode);
base_encode->rate_control = GST_VAAPI_ENCODER_MPEG2_DEFAULT_RATE_CONTROL;
encode->quantizer = GST_VAAPI_ENCODER_MPEG2_DEFAULT_CQP;
encode->intra_period = GST_VAAPI_ENCODER_MPEG2_DEFAULT_GOP_SIZE;
encode->ip_period = GST_VAAPI_ENCODER_MPEG2_DEFAULT_MAX_BFRAMES;
}
static void
gst_vaapiencode_mpeg2_finalize (GObject * object)
{
G_OBJECT_CLASS (gst_vaapiencode_mpeg2_parent_class)->finalize (object);
}
static void
gst_vaapiencode_mpeg2_set_property (GObject * object,
guint prop_id, const GValue * value, GParamSpec * pspec)
{
GstVaapiEncodeMpeg2 *const encode = GST_VAAPIENCODE_MPEG2_CAST (object);
switch (prop_id) {
case PROP_QUANTIZER:
encode->quantizer = g_value_get_uint (value);
break;
case PROP_KEY_PERIOD:
encode->intra_period = g_value_get_uint (value);
break;
case PROP_MAX_BFRAMES:
encode->ip_period = g_value_get_uint (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
gst_vaapiencode_mpeg2_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstVaapiEncodeMpeg2 *const encode = GST_VAAPIENCODE_MPEG2_CAST (object);
switch (prop_id) {
case PROP_QUANTIZER:
g_value_set_uint (value, encode->quantizer);
break;
case PROP_KEY_PERIOD:
g_value_set_uint (value, encode->intra_period);
break;
case PROP_MAX_BFRAMES:
g_value_set_uint (value, encode->ip_period);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static GstVaapiEncoder *
gst_vaapiencode_mpeg2_create_encoder (GstVaapiEncode * base,
GstVaapiDisplay * display)
{
GstVaapiEncodeMpeg2 *const encode = GST_VAAPIENCODE_MPEG2_CAST (base);
GstVaapiEncode *const base_encode = GST_VAAPIENCODE_CAST (base);
GstVaapiEncoder *base_encoder;
GstVaapiEncoderMpeg2 *encoder;
base_encoder = gst_vaapi_encoder_mpeg2_new (display);
if (!base_encoder)
return NULL;
encoder = GST_VAAPI_ENCODER_MPEG2 (base_encoder);
encoder->profile = GST_VAAPI_ENCODER_MPEG2_DEFAULT_PROFILE;
encoder->level = GST_VAAPI_ENCODER_MPEG2_DEFAULT_LEVEL;
GST_VAAPI_ENCODER_RATE_CONTROL (encoder) = base_encode->rate_control;
encoder->bitrate = base_encode->bitrate;
encoder->cqp = encode->quantizer;
encoder->intra_period = encode->intra_period;
encoder->ip_period = encode->ip_period;
return base_encoder;
}
static gboolean
gst_vaapiencode_mpeg2_check_ratecontrol (GstVaapiEncode * encode,
GstVaapiRateControl rate_control)
{
/* XXX: get information from GstVaapiEncoder object */
return rate_control == GST_VAAPI_RATECONTROL_CQP ||
rate_control == GST_VAAPI_RATECONTROL_CBR;
}
static void
gst_vaapiencode_mpeg2_class_init (GstVaapiEncodeMpeg2Class * klass)
{
GObjectClass *const object_class = G_OBJECT_CLASS (klass);
GstElementClass *const element_class = GST_ELEMENT_CLASS (klass);
GstVaapiEncodeClass *const encode_class = GST_VAAPIENCODE_CLASS (klass);
GST_DEBUG_CATEGORY_INIT (gst_vaapi_mpeg2_encode_debug,
GST_PLUGIN_NAME, 0, GST_PLUGIN_DESC);
object_class->finalize = gst_vaapiencode_mpeg2_finalize;
object_class->set_property = gst_vaapiencode_mpeg2_set_property;
object_class->get_property = gst_vaapiencode_mpeg2_get_property;
encode_class->create_encoder = gst_vaapiencode_mpeg2_create_encoder;
encode_class->check_ratecontrol = gst_vaapiencode_mpeg2_check_ratecontrol;
gst_element_class_set_static_metadata (element_class,
"VA-API MPEG-2 encoder",
"Codec/Encoder/Video",
GST_PLUGIN_DESC, "Guangxin Xu <guangxin.xu@intel.com>");
/* sink pad */
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_vaapiencode_mpeg2_sink_factory)
);
/* src pad */
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&gst_vaapiencode_mpeg2_src_factory)
);
g_object_class_install_property (object_class,
PROP_QUANTIZER,
g_param_spec_uint ("quantizer",
"Constant Quantizer",
"Constant quantizer (if rate-control mode is CQP)",
GST_VAAPI_ENCODER_MPEG2_MIN_CQP,
GST_VAAPI_ENCODER_MPEG2_MAX_CQP,
GST_VAAPI_ENCODER_MPEG2_DEFAULT_CQP,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_KEY_PERIOD,
g_param_spec_uint ("key-period",
"Key Period",
"Maximal distance between two key-frames",
1,
GST_VAAPI_ENCODER_MPEG2_MAX_GOP_SIZE,
GST_VAAPI_ENCODER_MPEG2_DEFAULT_GOP_SIZE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class,
PROP_MAX_BFRAMES,
g_param_spec_uint ("max-bframes",
"Max B-Frames",
"Number of B-frames between I and P",
0,
GST_VAAPI_ENCODER_MPEG2_MAX_MAX_BFRAMES,
GST_VAAPI_ENCODER_MPEG2_DEFAULT_MAX_BFRAMES,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}