void filter_chain_SubFilter( 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_filter( p_filter, display_date );
/* XXX I find that spu_t cast ugly */
if( p_subpic )
spu_DisplaySubpicture( (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
* \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,
char *psz_string, 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 = spu_CreateSubpicture( p_spu_channel );
if( !p_spu ) return VLC_EGENERIC;
/* Create a new subpicture region */
memset( &fmt, 0, sizeof(video_format_t) );
fmt.i_chroma = VLC_FOURCC('T','E','X','T');
fmt.i_aspect = 0;
fmt.i_width = fmt.i_height = 0;
fmt.i_x_offset = fmt.i_y_offset = 0;
p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_spu_channel), &fmt );
if( !p_spu->p_region )
{
msg_Err( p_spu_channel, "cannot allocate SPU region" );
spu_DestroySubpicture( p_spu_channel, 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->i_start = i_start;
p_spu->i_stop = i_stop;
p_spu->b_ephemer = true;
p_spu->b_absolute = false;
p_spu->i_x = i_hmargin;
p_spu->i_y = i_vmargin;
p_spu->i_flags = i_flags & ~SUBPICTURE_ALIGN_MASK;
p_spu->i_channel = i_channel;
spu_DisplaySubpicture( p_spu_channel, p_spu );
return VLC_SUCCESS;
}
/**
* This function will inject a subpicture into the vout with the provided
* picture
*/
static int VoutSnapshotPip( vout_thread_t *p_vout, image_handler_t *p_image, picture_t *p_pic, const video_format_t *p_fmt_in )
{
video_format_t fmt_in = *p_fmt_in;
video_format_t fmt_out;
picture_t *p_pip;
subpicture_t *p_subpic;
/* */
memset( &fmt_out, 0, sizeof(fmt_out) );
fmt_out = fmt_in;
fmt_out.i_chroma = VLC_FOURCC('Y','U','V','A');
/* */
p_pip = image_Convert( p_image, p_pic, &fmt_in, &fmt_out );
if( !p_pip )
return VLC_EGENERIC;
p_subpic = spu_CreateSubpicture( p_vout->p_spu );
if( p_subpic == NULL )
{
picture_Release( p_pip );
return VLC_EGENERIC;
}
p_subpic->i_channel = 0;
p_subpic->i_start = mdate();
p_subpic->i_stop = mdate() + 4000000;
p_subpic->b_ephemer = true;
p_subpic->b_fade = true;
p_subpic->i_original_picture_width = fmt_out.i_width * 4;
p_subpic->i_original_picture_height = fmt_out.i_height * 4;
fmt_out.i_aspect = 0;
fmt_out.i_sar_num =
fmt_out.i_sar_den = 0;
p_subpic->p_region = spu_CreateRegion( p_vout->p_spu, &fmt_out );
if( p_subpic->p_region )
vout_CopyPicture( p_image->p_parent, &p_subpic->p_region->picture, p_pip );
picture_Release( p_pip );
spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
return VLC_SUCCESS;
}
/**
* This function will inject a subpicture into the vout with the provided
* picture
*/
static int VoutSnapshotPip( vout_thread_t *p_vout, picture_t *p_pic )
{
subpicture_t *p_subpic = subpicture_NewFromPicture( VLC_OBJECT(p_vout),
p_pic, VLC_CODEC_YUVA );
if( !p_subpic )
return VLC_EGENERIC;
/* FIXME DEFAULT_CHAN is not good (used by the text) but
* hardcoded 0 doesn't seem right */
p_subpic->i_channel = 0;
p_subpic->i_start = mdate();
p_subpic->i_stop = p_subpic->i_start + 4000000;
p_subpic->b_ephemer = true;
p_subpic->b_fade = true;
/* Reduce the picture to 1/4^2 of the screen */
p_subpic->i_original_picture_width *= 4;
p_subpic->i_original_picture_height *= 4;
spu_DisplaySubpicture( p_vout->p_spu, p_subpic );
return VLC_SUCCESS;
}
