/*****************************************************************************
* Convert
*****************************************************************************/
static block_t *Convert( filter_t *p_filter, block_t *p_block )
{
block_t *p_out;
int i_out_size;
if( !p_block || !p_block->i_nb_samples )
{
if( p_block )
block_Release( p_block );
return NULL;
}
i_out_size = p_block->i_nb_samples * p_filter->p_sys->i_bitspersample/8 *
aout_FormatNbChannels( &(p_filter->fmt_out.audio) );
p_out = block_Alloc( i_out_size );
if( !p_out )
{
msg_Warn( p_filter, "can't get output buffer" );
block_Release( p_block );
return NULL;
}
p_out->i_nb_samples =
(p_block->i_nb_samples / p_filter->p_sys->i_nb_channels) *
aout_FormatNbChannels( &(p_filter->fmt_out.audio) );
#if 0
unsigned int i_in_size = in_buf.i_nb_samples * (p_filter->p_sys->i_bitspersample/8) *
aout_FormatNbChannels( &(p_filter->fmt_in.audio) );
if( (in_buf.i_buffer != i_in_size) && ((i_in_size % 32) != 0) ) /* is it word aligned?? */
{
msg_Err( p_filter, "input buffer is not word aligned" );
/* Fix output buffer to be word aligned */
}
#endif
memset( p_out->p_buffer, 0, i_out_size );
if( p_filter->p_sys->b_downmix )
{
stereo2mono_downmix( p_filter, p_block, p_out );
mono( p_filter, p_out, p_block );
}
else
{
stereo_to_mono( p_filter, p_out, p_block );
}
block_Release( p_block );
return p_out;
}
/*****************************************************************************
* Convert
*****************************************************************************/
static block_t *Convert( filter_t *p_filter, block_t *p_block )
{
aout_filter_t aout_filter;
aout_buffer_t in_buf, out_buf;
block_t *p_out = NULL;
unsigned int i_samples;
int i_out_size;
if( !p_block || !p_block->i_samples )
{
if( p_block )
block_Release( p_block );
return NULL;
}
i_out_size = p_block->i_samples * p_filter->p_sys->i_bitspersample/8 *
aout_FormatNbChannels( &(p_filter->fmt_out.audio) );
p_out = p_filter->pf_audio_buffer_new( p_filter, i_out_size );
if( !p_out )
{
msg_Warn( p_filter, "can't get output buffer" );
block_Release( p_block );
return NULL;
}
p_out->i_samples = (p_block->i_samples / p_filter->p_sys->i_nb_channels) *
aout_FormatNbChannels( &(p_filter->fmt_out.audio) );
p_out->i_dts = p_block->i_dts;
p_out->i_pts = p_block->i_pts;
p_out->i_length = p_block->i_length;
aout_filter.p_sys = (struct aout_filter_sys_t *)p_filter->p_sys;
aout_filter.input = p_filter->fmt_in.audio;
aout_filter.input.i_format = p_filter->fmt_in.i_codec;
aout_filter.output = p_filter->fmt_out.audio;
aout_filter.output.i_format = p_filter->fmt_out.i_codec;
in_buf.p_buffer = p_block->p_buffer;
in_buf.i_nb_bytes = p_block->i_buffer;
in_buf.i_nb_samples = p_block->i_samples;
#if 0
unsigned int i_in_size = in_buf.i_nb_samples * (p_filter->p_sys->i_bitspersample/8) *
aout_FormatNbChannels( &(p_filter->fmt_in.audio) );
if( (in_buf.i_nb_bytes != i_in_size) && ((i_in_size % 32) != 0) ) /* is it word aligned?? */
{
msg_Err( p_filter, "input buffer is not word aligned" );
/* Fix output buffer to be word aligned */
}
#endif
out_buf.p_buffer = p_out->p_buffer;
out_buf.i_nb_bytes = p_out->i_buffer;
out_buf.i_nb_samples = p_out->i_samples;
memset( p_out->p_buffer, 0, i_out_size );
if( p_filter->p_sys->b_downmix )
{
stereo2mono_downmix( &aout_filter, &in_buf, &out_buf );
i_samples = mono( &aout_filter, &out_buf, &in_buf );
}
else
{
i_samples = stereo_to_mono( &aout_filter, &out_buf, &in_buf );
}
p_out->i_buffer = out_buf.i_nb_bytes;
p_out->i_samples = out_buf.i_nb_samples;
block_Release( p_block );
return p_out;
}
