mix_audio/src/mixaip.c

/* 
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 Copyright 2009 Intel Corporation All Rights Reserved. 
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*/

/**
 * SECTION:mixaip
 * @short_description: Initialization parameters object.
 * @include: mixacp.h
 *
 * A data object which stores initialization specific parameters.
 * 
 * Not Implemented in Moorestown.
 */

#include "mixaip.h"

//static GType _mix_aip_type = 0;
static MixParamsClass *parent_class = NULL;

// #define _do_init { _mix_aip_type = g_define_type_id; };
#define _do_init 

gboolean mix_aip_copy(MixParams* target, const MixParams *src);
MixParams* mix_aip_dup(const MixParams *obj);
gboolean mix_aip_equal(MixParams* first, MixParams *second);
static void mix_aip_finalize(MixParams *obj);

G_DEFINE_TYPE_WITH_CODE(MixAudioInitParams, mix_aip, MIX_TYPE_PARAMS, _do_init );

#if 0
void _mix_aip_initialize (void)
{
  /* the MixParams types need to be class_ref'd once before it can be
   * done from multiple threads;
   * see http://bugzilla.gnome.org/show_bug.cgi?id=304551 */
  g_type_class_ref (mix_aip_get_type ());
}
#endif

static void mix_aip_init (MixAudioInitParams *self)
{
  self->reserved1 = self->reserved2 = self->reserved3 = self->reserved4 = NULL;
}

static void mix_aip_class_init(MixAudioInitParamsClass *klass)
{
  MixParamsClass *mixparams_class = MIX_PARAMS_CLASS(klass);

  /* setup static parent class */
  parent_class = (MixParamsClass *) g_type_class_peek_parent (klass);

  mixparams_class->finalize = mix_aip_finalize;
  mixparams_class->copy = (MixParamsCopyFunction)mix_aip_copy;
  mixparams_class->dup = (MixParamsDupFunction)mix_aip_dup;
  mixparams_class->equal = (MixParamsEqualFunction)mix_aip_equal;
}

MixAudioInitParams *mix_aip_new(void)
{
  MixAudioInitParams *ret = (MixAudioInitParams *)g_type_create_instance (MIX_TYPE_AUDIOINITPARAMS);

  return ret;
}

void mix_aip_finalize(MixParams *obj)
{
  /* clean up here. */
  
  /* Chain up parent */ 
  if (parent_class->finalize) 
    parent_class->finalize(obj);
}

MixAudioInitParams *mix_aip_ref(MixAudioInitParams *mix) 
{ 
  return (MixAudioInitParams*)mix_params_ref(MIX_PARAMS(mix)); 
}

/**
 * mix_aip_dup:
 * @obj: a #MixAudioInitParams object
 * @returns: a newly allocated duplicate of the object.
 * 
 * Copy duplicate of the object.
 */
MixParams* mix_aip_dup(const MixParams *obj)
{
  MixParams *ret = NULL;

  if (MIX_IS_AUDIOINITPARAMS(obj))
  {
    MixAudioInitParams *duplicate = mix_aip_new();
    if (mix_aip_copy(MIX_PARAMS(duplicate), MIX_PARAMS(obj)))
    {
      ret = MIX_PARAMS(duplicate);
    }
    else
    {
      mix_aip_unref(duplicate);
    }
  }

  return ret;
}

/**
 * mix_aip_copy:
 * @target: copy to target
 * @src: copy from src
 * @returns: boolean indicates if copy is successful.
 * 
 * Copy instance data from @src to @target.
 */
gboolean mix_aip_copy(MixParams* target, const MixParams *src)
{
  if (MIX_IS_AUDIOINITPARAMS(target) && MIX_IS_AUDIOINITPARAMS(src))
  {
    // TODO perform copy.
    // 
    // Now chainup base class
    // Get the root class from the cached parent_class object. This cached parent_class object has not be overwritten by this current class.
    // Using the cached parent_class object because this_class would have ->copy pointing to this method!
    // Cached parent_class contains the class object before it is overwritten by this derive class.
    // MixParamsClass *klass = MIX_PARAMS_CLASS(parent_class); 
    if (parent_class->copy)
    {
      return parent_class->copy(MIX_PARAMS_CAST(target), MIX_PARAMS_CAST(src));
    }
    else
      return TRUE;
  }
  return FALSE;
}

/**
 * mix_aip_equal:
 * @first: first object to compare
 * @second: seond object to compare
 * @returns: boolean indicates if instance are equal.
 * 
 * Copy instance data from @src to @target.
 */
gboolean mix_aip_equal(MixParams* first, MixParams *second)
{
  gboolean ret = FALSE;

  if (MIX_IS_AUDIOINITPARAMS(first) && MIX_IS_AUDIOINITPARAMS(second))
  {
    // TODO: do deep compare

    if (ret)
    {
      // members within this scope equal. chaining up.
      MixParamsClass *klass = MIX_PARAMS_CLASS(parent_class);
      if (klass->equal)
        ret = parent_class->equal(first, second);
      else
        ret = TRUE;
    }
  }

  return ret;
}