static block_t *Encode( encoder_t *p_enc, block_t *p_aout_buf )
{
encoder_sys_t *p_sys = p_enc->p_sys;
/* FIXME:p_aout_buf is NULL when it's time to flush, does twolame has buffer to flush?*/
if( unlikely( !p_aout_buf ) ) return NULL;
int16_t *p_buffer = (int16_t *)p_aout_buf->p_buffer;
int i_nb_samples = p_aout_buf->i_nb_samples;
block_t *p_chain = NULL;
p_sys->i_pts = p_aout_buf->i_pts -
(mtime_t)1000000 * (mtime_t)p_sys->i_nb_samples /
(mtime_t)p_enc->fmt_out.audio.i_rate;
while ( p_sys->i_nb_samples + i_nb_samples >= MPEG_FRAME_SIZE )
{
int i_used;
block_t *p_block;
Bufferize( p_enc, p_buffer, MPEG_FRAME_SIZE - p_sys->i_nb_samples );
i_nb_samples -= MPEG_FRAME_SIZE - p_sys->i_nb_samples;
p_buffer += (MPEG_FRAME_SIZE - p_sys->i_nb_samples) * 2;
i_used = twolame_encode_buffer_interleaved( p_sys->p_twolame,
p_sys->p_buffer, MPEG_FRAME_SIZE,
p_sys->p_out_buffer, MAX_CODED_FRAME_SIZE );
p_sys->i_nb_samples = 0;
p_block = block_Alloc( i_used );
memcpy( p_block->p_buffer, p_sys->p_out_buffer, i_used );
p_block->i_length = (mtime_t)1000000 *
(mtime_t)MPEG_FRAME_SIZE / (mtime_t)p_enc->fmt_out.audio.i_rate;
p_block->i_dts = p_block->i_pts = p_sys->i_pts;
p_sys->i_pts += p_block->i_length;
block_ChainAppend( &p_chain, p_block );
}
if ( i_nb_samples )
{
Bufferize( p_enc, p_buffer, i_nb_samples );
p_sys->i_nb_samples += i_nb_samples;
}
return p_chain;
}
static block_t *Encode( encoder_t *p_enc, aout_buffer_t *p_aout_buf )
{
encoder_sys_t *p_sys = p_enc->p_sys;
int16_t *p_buffer = (int16_t *)p_aout_buf->p_buffer;
int i_nb_samples = p_aout_buf->i_nb_samples;
block_t *p_chain = NULL;
p_sys->i_pts = p_aout_buf->start_date -
(mtime_t)1000000 * (mtime_t)p_sys->i_nb_samples /
(mtime_t)p_enc->fmt_out.audio.i_rate;
while ( p_sys->i_nb_samples + i_nb_samples >= MPEG_FRAME_SIZE )
{
int i_used;
block_t *p_block;
Bufferize( p_enc, p_buffer, MPEG_FRAME_SIZE - p_sys->i_nb_samples );
i_nb_samples -= MPEG_FRAME_SIZE - p_sys->i_nb_samples;
p_buffer += (MPEG_FRAME_SIZE - p_sys->i_nb_samples) * 2;
i_used = twolame_encode_buffer_interleaved( p_sys->p_twolame,
p_sys->p_buffer, MPEG_FRAME_SIZE,
p_sys->p_out_buffer, MAX_CODED_FRAME_SIZE );
p_sys->i_nb_samples = 0;
p_block = block_New( p_enc, i_used );
vlc_memcpy( p_block->p_buffer, p_sys->p_out_buffer, i_used );
p_block->i_length = (mtime_t)1000000 *
(mtime_t)MPEG_FRAME_SIZE / (mtime_t)p_enc->fmt_out.audio.i_rate;
p_block->i_dts = p_block->i_pts = p_sys->i_pts;
p_sys->i_pts += p_block->i_length;
block_ChainAppend( &p_chain, p_block );
}
if ( i_nb_samples )
{
Bufferize( p_enc, p_buffer, i_nb_samples );
p_sys->i_nb_samples += i_nb_samples;
}
return p_chain;
}
static block_t *Encode( encoder_t *p_enc, block_t *p_aout_buf )
{
encoder_sys_t *p_sys = p_enc->p_sys;
block_t *p_chain = NULL;
if( unlikely( !p_aout_buf ) ) {
int i_used = 0;
block_t *p_block;
i_used = twolame_encode_flush( p_sys->p_twolame,
p_sys->p_out_buffer, MAX_CODED_FRAME_SIZE );
if( i_used <= 0 )
return NULL;
p_block = block_Alloc( i_used );
if( !p_block )
return NULL;
memcpy( p_block->p_buffer, p_sys->p_out_buffer, i_used );
p_block->i_length = vlc_tick_from_samples( MPEG_FRAME_SIZE,
p_enc->fmt_out.audio.i_rate );
p_block->i_dts = p_block->i_pts = p_sys->i_pts;
p_sys->i_pts += p_block->i_length;
return p_block;
}
int16_t *p_buffer = (int16_t *)p_aout_buf->p_buffer;
int i_nb_samples = p_aout_buf->i_nb_samples;
p_sys->i_pts = p_aout_buf->i_pts -
vlc_tick_from_samples( p_sys->i_nb_samples,
p_enc->fmt_out.audio.i_rate );
while ( p_sys->i_nb_samples + i_nb_samples >= MPEG_FRAME_SIZE )
{
int i_used;
block_t *p_block;
Bufferize( p_enc, p_buffer, MPEG_FRAME_SIZE - p_sys->i_nb_samples );
i_nb_samples -= MPEG_FRAME_SIZE - p_sys->i_nb_samples;
p_buffer += (MPEG_FRAME_SIZE - p_sys->i_nb_samples) * 2;
i_used = twolame_encode_buffer_interleaved( p_sys->p_twolame,
p_sys->p_buffer, MPEG_FRAME_SIZE,
p_sys->p_out_buffer, MAX_CODED_FRAME_SIZE );
/* On error, buffer samples and return what was already encoded */
if( i_used < 0 )
{
msg_Err( p_enc, "encoder error: %d", i_used );
break;
}
p_sys->i_nb_samples = 0;
p_block = block_Alloc( i_used );
if( !p_block )
{
if( p_chain )
block_ChainRelease( p_chain );
return NULL;
}
memcpy( p_block->p_buffer, p_sys->p_out_buffer, i_used );
p_block->i_length = vlc_tick_from_samples( MPEG_FRAME_SIZE,
p_enc->fmt_out.audio.i_rate );
p_block->i_dts = p_block->i_pts = p_sys->i_pts;
p_sys->i_pts += p_block->i_length;
block_ChainAppend( &p_chain, p_block );
}
if ( i_nb_samples )
{
Bufferize( p_enc, p_buffer, i_nb_samples );
p_sys->i_nb_samples += i_nb_samples;
}
return p_chain;
}
