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/*
* Copyright (C) 2009 Texas Instruments, Inc - http://www.ti.com/
*
* Description: Base audio decoder element
* Created on: Aug 2, 2009
* Author: Rob Clark <rob@ti.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 2.1 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
* 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.
*/
#include "gstomx_base_audiodec.h"
#include "gstomx.h"
#include <string.h> /* for memset */
#define CHANNELS_DEFAULT 2
#define SAMPLERATE_DEFAULT 44100
GSTOMX_BOILERPLATE (GstOmxBaseAudioDec, gst_omx_base_audiodec, GstOmxBaseFilter, GST_OMX_BASE_FILTER_TYPE);
static void
type_base_init (gpointer g_class)
{
}
static void
type_class_init (gpointer g_class,
gpointer class_data)
{
}
static gboolean
sink_setcaps (GstPad *pad,
GstCaps *caps)
{
GstStructure *structure;
GstOmxBaseFilter *omx_base;
GstOmxBaseAudioDec *self;
GOmxCore *gomx;
omx_base = GST_OMX_BASE_FILTER (GST_PAD_PARENT (pad));
self = GST_OMX_BASE_AUDIODEC (omx_base);
gomx = (GOmxCore *) omx_base->gomx;
GST_INFO_OBJECT (omx_base, "getcaps (sink): %" GST_PTR_FORMAT, caps);
self->rate = SAMPLERATE_DEFAULT;
self->channels = CHANNELS_DEFAULT;
{
g_return_val_if_fail (caps, FALSE);
g_return_val_if_fail (gst_caps_get_size (caps) == 1, FALSE);
structure = gst_caps_get_structure (caps, 0);
gst_structure_get_int (structure, "rate", &self->rate);
gst_structure_get_int (structure, "channels", &self->channels);
}
return gst_pad_set_caps (pad, caps);
}
static void
settings_changed_cb (GOmxCore *core)
{
GstOmxBaseFilter *omx_base;
guint rate;
guint channels;
omx_base = core->object;
GST_DEBUG_OBJECT (omx_base, "settings changed");
{
OMX_AUDIO_PARAM_PCMMODETYPE param;
G_OMX_PORT_GET_PARAM (omx_base->out_port, OMX_IndexParamAudioPcm, ¶m);
rate = param.nSamplingRate;
channels = param.nChannels;
if (rate == 0)
{
/** @todo: this shouldn't happen. */
GST_WARNING_OBJECT (omx_base, "Bad samplerate");
rate = 44100;
}
}
{
GstCaps *new_caps;
new_caps = gst_caps_new_simple ("audio/x-raw-int",
"width", G_TYPE_INT, 16,
"depth", G_TYPE_INT, 16,
"rate", G_TYPE_INT, rate,
"signed", G_TYPE_BOOLEAN, TRUE,
"endianness", G_TYPE_INT, G_BYTE_ORDER,
"channels", G_TYPE_INT, channels,
NULL);
GST_INFO_OBJECT (omx_base, "caps are: %" GST_PTR_FORMAT, new_caps);
gst_pad_set_caps (omx_base->srcpad, new_caps);
}
}
static void
type_instance_init (GTypeInstance *instance,
gpointer g_class)
{
GstOmxBaseFilter *omx_base;
omx_base = GST_OMX_BASE_FILTER (instance);
GST_DEBUG_OBJECT (omx_base, "start");
omx_base->gomx->settings_changed_cb = settings_changed_cb;
gst_pad_set_setcaps_function (omx_base->sinkpad,
(sink_setcaps));
}
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