mix_audio/src/mixacpwma.c

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*/

/**
 * SECTION:mixacpwma
 * @short_description: Audio parameters for WMA audio.
 * @include: mixacpwma.h
 *
 * A data object which stores audio specific parameters for WMA.
 * 
 * In Moorestown, only WMA2 is supported.
 * 
 * Additional parameters must be set in the parent object #MixAudioConfigParams
 */

#include "mixacpwma.h"

static GType _mix_acp_wma_type = 0;
static MixAudioConfigParamsClass *parent_class = NULL;

#define _do_init { _mix_acp_wma_type = g_define_type_id; }

gboolean mix_acp_wma_copy(MixParams* target, const MixParams *src);
MixParams* mix_acp_wma_dup(const MixParams *obj);
gboolean mix_acp_wma_equal(MixParams* first, MixParams *second);
static void mix_acp_wma_finalize(MixParams *obj);

G_DEFINE_TYPE_WITH_CODE(MixAudioConfigParamsWMA, mix_acp_wma, MIX_TYPE_AUDIOCONFIGPARAMS, _do_init);

static void mix_acp_wma_init (MixAudioConfigParamsWMA *self)
{
  self->channel_mask = 0;
  self->format_tag = 0;
  self->block_align = 0;
  self->wma_encode_opt = 0;
  self->pcm_bit_width = 0;  /* source pcm bit width */
  self->wma_version = MIX_AUDIO_WMA_VUNKNOWN;
}

static void mix_acp_wma_class_init(MixAudioConfigParamsWMAClass *klass)
{
  MixParamsClass *mixparams_class = MIX_PARAMS_CLASS(klass);

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

  mixparams_class->finalize = mix_acp_wma_finalize;
  mixparams_class->copy = (MixParamsCopyFunction)mix_acp_wma_copy;
  mixparams_class->dup = (MixParamsDupFunction)mix_acp_wma_dup;
  mixparams_class->equal = (MixParamsEqualFunction)mix_acp_wma_equal;
}

MixAudioConfigParamsWMA *mix_acp_wma_new(void)
{
  MixAudioConfigParamsWMA *ret = (MixAudioConfigParamsWMA *)g_type_create_instance (MIX_TYPE_AUDIOCONFIGPARAMSWMA);

  return ret;
}

void mix_acp_wma_finalize(MixParams *obj)
{
  /* clean up here. */
  
  /* Chain up parent */ 
  MixParamsClass *klass = MIX_PARAMS_CLASS(parent_class);
  if (klass->finalize) 
    klass->finalize(obj);
}

MixAudioConfigParamsWMA *mix_acp_wma_ref(MixAudioConfigParamsWMA *obj) 
{ 
  return (MixAudioConfigParamsWMA*)mix_params_ref(MIX_PARAMS(obj)); 
}

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

  if (MIX_IS_AUDIOCONFIGPARAMSWMA(obj))
  {
    MixAudioConfigParamsWMA *duplicate = mix_acp_wma_new();
    if (mix_acp_wma_copy(MIX_PARAMS(duplicate), MIX_PARAMS(obj)))
    {
      ret = MIX_PARAMS(duplicate);
    }
    else
    {
      mix_acp_wma_unref(duplicate);
    }
  }

  return ret;
}

/**
 * mix_acp_wma_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_acp_wma_copy(MixParams* target, const MixParams *src)
{
  if (MIX_IS_AUDIOCONFIGPARAMSWMA(target) && MIX_IS_AUDIOCONFIGPARAMSWMA(src))
  {
    MixAudioConfigParamsWMA *t = MIX_AUDIOCONFIGPARAMSWMA(target);
    MixAudioConfigParamsWMA *s = MIX_AUDIOCONFIGPARAMSWMA(src);

    t->channel_mask = s->channel_mask;
    t->format_tag = s->format_tag;
    t->block_align = s->block_align;
    t->wma_encode_opt = s->wma_encode_opt;
    t->wma_version = s->wma_version;
    t->pcm_bit_width = s->pcm_bit_width;

    // Now chainup base class
    MixParamsClass *klass = MIX_PARAMS_CLASS(parent_class); 
    if (klass->copy)
    {
      return klass->copy(MIX_PARAMS_CAST(target), MIX_PARAMS_CAST(src));
    }
    else
      return TRUE;
  }
  return FALSE;
}

/**
 * mix_acp_wma_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_acp_wma_equal(MixParams* first, MixParams *second)
{
  gboolean ret = FALSE;
  
  if (first && second)
  {
    if (first == second) return TRUE;
  }
  else
  {
    return FALSE;
  }

  MixParamsClass *klass = MIX_PARAMS_CLASS(parent_class);
  if (klass->equal)
    ret = klass->equal(first, second);
  else
    ret = TRUE;

  if (ret && MIX_IS_AUDIOCONFIGPARAMSWMA(first) && MIX_IS_AUDIOCONFIGPARAMSWMA(second))
  {
    MixAudioConfigParamsWMA *acp1 = MIX_AUDIOCONFIGPARAMSWMA(first);
    MixAudioConfigParamsWMA *acp2 = MIX_AUDIOCONFIGPARAMSWMA(second);

    ret = (acp1->channel_mask == acp2->channel_mask) &&
          (acp1->format_tag == acp2->format_tag) &&
          (acp1->block_align == acp2->block_align) &&
          (acp1->wma_encode_opt == acp2->wma_encode_opt) &&
          (acp1->pcm_bit_width == acp2->pcm_bit_width) &&
          (acp1->wma_version == acp2->wma_version);
  }

  return ret;
}

MixAudioWMAVersion mix_acp_wma_get_version(MixAudioConfigParamsWMA *obj)
{
  if (obj)
    return (obj->wma_version);
  else
    return MIX_AUDIO_WMA_VUNKNOWN;
}

MIX_RESULT mix_acp_wma_set_version(MixAudioConfigParamsWMA *obj, MixAudioWMAVersion ver)
{
  MIX_RESULT ret = MIX_RESULT_SUCCESS;

  if (!obj) return MIX_RESULT_NULL_PTR;

  if ((ver > MIX_AUDIO_WMA_VUNKNOWN) && (ver < MIX_AUDIO_WMA_LAST))
    obj->wma_version = ver;
  else 
    ret=MIX_RESULT_INVALID_PARAM;

  return ret;
}