void filter_chain_SubSource( filter_chain_t *p_chain,
mtime_t display_date )
{
for( chained_filter_t *f = p_chain->first; f != NULL; f = f->next )
{
filter_t *p_filter = &f->filter;
subpicture_t *p_subpic = p_filter->pf_sub_source( p_filter, display_date );
/* XXX I find that spu_t cast ugly */
if( p_subpic )
spu_PutSubpicture( (spu_t*)p_chain->p_this, p_subpic );
}
}
/**
* \brief Show text on the video from a given start date to a given end date
* \param p_spu pointer to the subpicture queue the text is to be showed on
* \param i_channel Subpicture channel
* \param psz_string The text to be shown
* \param p_style Pointer to a struct with text style info (it is duplicated)
* \param i_flags flags for alignment and such
* \param i_hmargin horizontal margin in pixels
* \param i_vmargin vertical margin in pixels
* \param i_start the time when this string is to appear on the video
* \param i_stop the time when this string should stop to be displayed
* if this is 0 the string will be shown untill the next string
* is about to be shown
*/
int osd_ShowTextAbsolute( spu_t *p_spu_channel, int i_channel,
const char *psz_string, const text_style_t *p_style,
int i_flags, int i_hmargin, int i_vmargin,
mtime_t i_start, mtime_t i_stop )
{
subpicture_t *p_spu;
video_format_t fmt;
(void)p_style;
if( !psz_string ) return VLC_EGENERIC;
p_spu = subpicture_New( NULL );
if( !p_spu )
return VLC_EGENERIC;
p_spu->i_channel = i_channel;
p_spu->i_start = i_start;
p_spu->i_stop = i_stop;
p_spu->b_ephemer = true;
p_spu->b_absolute = false;
/* Create a new subpicture region */
memset( &fmt, 0, sizeof(video_format_t) );
fmt.i_chroma = VLC_CODEC_TEXT;
fmt.i_width = fmt.i_height = 0;
fmt.i_x_offset = fmt.i_y_offset = 0;
p_spu->p_region = subpicture_region_New( &fmt );
if( !p_spu->p_region )
{
msg_Err( p_spu_channel, "cannot allocate SPU region" );
subpicture_Delete( p_spu );
return VLC_EGENERIC;
}
p_spu->p_region->psz_text = strdup( psz_string );
p_spu->p_region->i_align = i_flags & SUBPICTURE_ALIGN_MASK;
p_spu->p_region->i_x = i_hmargin;
p_spu->p_region->i_y = i_vmargin;
spu_PutSubpicture( p_spu_channel, p_spu );
return VLC_SUCCESS;
}
int transcode_spu_process( sout_stream_t *p_stream,
sout_stream_id_sys_t *id,
block_t *in, block_t **out )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
subpicture_t *p_subpic;
*out = NULL;
p_subpic = id->p_decoder->pf_decode_sub( id->p_decoder, &in );
if( !p_subpic )
{
/* We just don't have anything to handle now, go own*/
return VLC_SUCCESS;
}
if( p_sys->b_master_sync && p_sys->i_master_drift )
{
p_subpic->i_start -= p_sys->i_master_drift;
if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
}
if( p_sys->b_soverlay )
{
spu_PutSubpicture( p_sys->p_spu, p_subpic );
return VLC_SUCCESS;
}
else
{
block_t *p_block;
p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
subpicture_Delete( p_subpic );
if( p_block )
{
block_ChainAppend( out, p_block );
return VLC_SUCCESS;
}
}
return VLC_EGENERIC;
}
int transcode_spu_process( sout_stream_t *p_stream,
sout_stream_id_t *id,
block_t *in, block_t **out )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
subpicture_t *p_subpic;
*out = NULL;
p_subpic = id->p_decoder->pf_decode_sub( id->p_decoder, &in );
if( !p_subpic )
return VLC_EGENERIC;
sout_UpdateStatistic( p_stream->p_sout, SOUT_STATISTIC_DECODED_SUBTITLE, 1 );
if( p_sys->b_master_sync && p_sys->i_master_drift )
{
p_subpic->i_start -= p_sys->i_master_drift;
if( p_subpic->i_stop ) p_subpic->i_stop -= p_sys->i_master_drift;
}
if( p_sys->b_soverlay )
{
spu_PutSubpicture( p_sys->p_spu, p_subpic );
}
else
{
block_t *p_block;
p_block = id->p_encoder->pf_encode_sub( id->p_encoder, p_subpic );
spu_del_buffer( id->p_decoder, p_subpic );
if( p_block )
{
block_ChainAppend( out, p_block );
return VLC_SUCCESS;
}
}
return VLC_EGENERIC;
}