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path: root/omx/gstomx_h263enc.c
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/*
 * Copyright (C) 2007-2009 Nokia Corporation.
 *
 * Author: Felipe Contreras <felipe.contreras@nokia.com>
 *
 * 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
 * version 2.1 of the License.
 *
 * 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 "gstomx_h263enc.h"
#include "gstomx.h"

GSTOMX_BOILERPLATE (GstOmxH263Enc, gst_omx_h263enc, GstOmxBaseVideoEnc, GST_OMX_BASE_VIDEOENC_TYPE);

static GstCaps *
generate_src_template (void)
{
    GstCaps *caps;

    caps = gst_caps_new_simple ("video/x-h263",
                                "variant", G_TYPE_STRING, "itu",
                                "width", GST_TYPE_INT_RANGE, 16, 4096,
                                "height", GST_TYPE_INT_RANGE, 16, 4096,
                                "framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1,
                                NULL);

    return caps;
}

static void
type_base_init (gpointer g_class)
{
    GstElementClass *element_class;

    element_class = GST_ELEMENT_CLASS (g_class);

    gst_element_class_set_details_simple (element_class,
            "OpenMAX IL H.263 video encoder",
            "Codec/Encoder/Video",
            "Encodes video in H.263 format with OpenMAX IL",
            "Felipe Contreras");

    {
        GstPadTemplate *template;

        template = gst_pad_template_new ("src", GST_PAD_SRC,
                                         GST_PAD_ALWAYS,
                                         generate_src_template ());

        gst_element_class_add_pad_template (element_class, template);
    }
}

static void
type_class_init (gpointer g_class,
                 gpointer class_data)
{
}

static void
settings_changed_cb (GOmxCore *core)
{
    GstOmxBaseVideoEnc *omx_base;
    GstOmxBaseFilter *omx_base_filter;
    guint width;
    guint height;

    omx_base_filter = core->object;
    omx_base = GST_OMX_BASE_VIDEOENC (omx_base_filter);

    GST_DEBUG_OBJECT (omx_base, "settings changed");

    {
        OMX_PARAM_PORTDEFINITIONTYPE param;

        G_OMX_INIT_PARAM (param);

        param.nPortIndex = omx_base_filter->out_port->port_index;
        OMX_GetParameter (core->omx_handle, OMX_IndexParamPortDefinition, &param);

        width = param.format.video.nFrameWidth;
        height = param.format.video.nFrameHeight;
    }

    {
        GstCaps *new_caps;

        new_caps = gst_caps_new_simple ("video/x-h263",
                                        "variant", G_TYPE_STRING, "itu",
                                        "width", G_TYPE_INT, width,
                                        "height", G_TYPE_INT, height,
                                        "framerate", GST_TYPE_FRACTION,
                                        omx_base->framerate_num, omx_base->framerate_denom,
                                        NULL);

        GST_INFO_OBJECT (omx_base, "caps are: %" GST_PTR_FORMAT, new_caps);
        gst_pad_set_caps (omx_base_filter->srcpad, new_caps);
    }
}

static void
type_instance_init (GTypeInstance *instance,
                    gpointer g_class)
{
    GstOmxBaseFilter *omx_base_filter;
    GstOmxBaseVideoEnc *omx_base;

    omx_base_filter = GST_OMX_BASE_FILTER (instance);
    omx_base = GST_OMX_BASE_VIDEOENC (instance);

    omx_base->compression_format = OMX_VIDEO_CodingH263;

    omx_base_filter->gomx->settings_changed_cb = settings_changed_cb;
}