/*****************************************************************************
* DecodeBlock:
*****************************************************************************/
static aout_buffer_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block;
if( !pp_block || !*pp_block ) return NULL;
p_block = *pp_block;
if( p_block->i_pts != 0 &&
p_block->i_pts != aout_DateGet( &p_sys->end_date ) )
{
aout_DateSet( &p_sys->end_date, p_block->i_pts );
}
else if( !aout_DateGet( &p_sys->end_date ) )
{
/* We've just started the stream, wait for the first PTS. */
block_Release( p_block );
return NULL;
}
/* Don't re-use the same pts twice */
p_block->i_pts = 0;
if( p_block->i_buffer >= p_sys->i_block )
{
aout_buffer_t *p_out;
p_out = p_dec->pf_aout_buffer_new( p_dec, p_sys->i_samplesperblock );
if( p_out == NULL )
{
block_Release( p_block );
return NULL;
}
p_out->start_date = aout_DateGet( &p_sys->end_date );
p_out->end_date =
aout_DateIncrement( &p_sys->end_date, p_sys->i_samplesperblock );
switch( p_sys->codec )
{
case ADPCM_IMA_QT:
DecodeAdpcmImaQT( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_IMA_WAV:
DecodeAdpcmImaWav( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_MS:
DecodeAdpcmMs( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_DK4:
DecodeAdpcmDk4( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_DK3:
DecodeAdpcmDk3( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_EA:
DecodeAdpcmEA( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
default:
break;
}
p_block->p_buffer += p_sys->i_block;
p_block->i_buffer -= p_sys->i_block;
return p_out;
}
block_Release( p_block );
return NULL;
}
/*****************************************************************************
* DecodeBlock:
*****************************************************************************/
static block_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block;
if( !pp_block || !*pp_block ) return NULL;
p_block = *pp_block;
if( p_block->i_pts > VLC_TS_INVALID &&
p_block->i_pts != date_Get( &p_sys->end_date ) )
{
date_Set( &p_sys->end_date, p_block->i_pts );
}
else if( !date_Get( &p_sys->end_date ) )
{
/* We've just started the stream, wait for the first PTS. */
block_Release( p_block );
return NULL;
}
/* Don't re-use the same pts twice */
p_block->i_pts = VLC_TS_INVALID;
if( p_block->i_buffer >= p_sys->i_block )
{
block_t *p_out;
p_out = decoder_NewAudioBuffer( p_dec, p_sys->i_samplesperblock );
if( p_out == NULL )
{
block_Release( p_block );
return NULL;
}
p_out->i_pts = date_Get( &p_sys->end_date );
p_out->i_length = date_Increment( &p_sys->end_date,
p_sys->i_samplesperblock ) - p_out->i_pts;
switch( p_sys->codec )
{
case ADPCM_IMA_QT:
DecodeAdpcmImaQT( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_IMA_WAV:
DecodeAdpcmImaWav( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_MS:
DecodeAdpcmMs( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_DK4:
DecodeAdpcmDk4( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_DK3:
DecodeAdpcmDk3( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_EA:
DecodeAdpcmEA( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
default:
break;
}
p_block->p_buffer += p_sys->i_block;
p_block->i_buffer -= p_sys->i_block;
return p_out;
}
block_Release( p_block );
return NULL;
}
/*****************************************************************************
* DecodeBlock:
*****************************************************************************/
static block_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block;
if( !*pp_block ) return NULL;
p_block = *pp_block;
if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
{
Flush( p_dec );
if( p_block->i_flags & BLOCK_FLAG_CORRUPTED )
goto drop;
}
if( p_block->i_pts > VLC_TS_INVALID &&
p_block->i_pts != date_Get( &p_sys->end_date ) )
{
date_Set( &p_sys->end_date, p_block->i_pts );
}
else if( !date_Get( &p_sys->end_date ) )
/* We've just started the stream, wait for the first PTS. */
goto drop;
/* Don't re-use the same pts twice */
p_block->i_pts = VLC_TS_INVALID;
if( p_block->i_buffer >= p_sys->i_block )
{
block_t *p_out;
if( decoder_UpdateAudioFormat( p_dec ) )
goto drop;
p_out = decoder_NewAudioBuffer( p_dec, p_sys->i_samplesperblock );
if( p_out == NULL )
goto drop;
p_out->i_pts = date_Get( &p_sys->end_date );
p_out->i_length = date_Increment( &p_sys->end_date,
p_sys->i_samplesperblock ) - p_out->i_pts;
switch( p_sys->codec )
{
case ADPCM_IMA_QT:
DecodeAdpcmImaQT( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_IMA_WAV:
DecodeAdpcmImaWav( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_MS:
DecodeAdpcmMs( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_DK4:
DecodeAdpcmDk4( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_DK3:
DecodeAdpcmDk3( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
break;
case ADPCM_EA:
DecodeAdpcmEA( p_dec, (int16_t*)p_out->p_buffer,
p_block->p_buffer );
default:
break;
}
p_block->p_buffer += p_sys->i_block;
p_block->i_buffer -= p_sys->i_block;
return p_out;
}
drop:
block_Release( p_block );
*pp_block = NULL;
return NULL;
}