/*****************************************************************************
* OpenDeinterlace: probe the filter and return score
*****************************************************************************/
int OpenDeinterlace( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t*)p_this;
filter_sys_t *p_sys;
/* Check if we can handle that formats */
if( TestFfmpegChroma( -1, p_filter->fmt_in.i_codec ) != VLC_SUCCESS )
{
msg_Err( p_filter, "Failed to match chroma type" );
return VLC_EGENERIC;
}
/* Allocate the memory needed to store the decoder's structure */
if( ( p_filter->p_sys = p_sys =
(filter_sys_t *)malloc(sizeof(filter_sys_t)) ) == NULL )
{
return VLC_EGENERIC;
}
/* Misc init */
p_filter->fmt_in.video.i_chroma = p_filter->fmt_in.i_codec;
if( GetFfmpegChroma( &p_sys->i_src_ffmpeg_chroma, p_filter->fmt_in.video ) != VLC_SUCCESS )
{
msg_Err( p_filter, "Failed to match chroma type" );
return VLC_EGENERIC;
}
p_filter->pf_video_filter = Deinterlace;
msg_Dbg( p_filter, "deinterlacing" );
/* libavcodec needs to be initialized for some chroma conversions */
InitLibavcodec(p_this);
return VLC_SUCCESS;
}
static int GetParameters( ScalerConfiguration *p_cfg,
const video_format_t *p_fmti,
const video_format_t *p_fmto,
int i_sws_flags_default )
{
int i_fmti = -1;
int i_fmto = -1;
bool b_has_ai = false;
bool b_has_ao = false;
int i_sws_flags = i_sws_flags_default;
bool b_swap_uvi = false;
bool b_swap_uvo = false;
GetFfmpegChroma( &i_fmti, *p_fmti );
GetFfmpegChroma( &i_fmto, *p_fmto );
if( p_fmti->i_chroma == p_fmto->i_chroma )
{
if( p_fmti->i_chroma == VLC_CODEC_YUVP && ALLOW_YUVP )
{
i_fmti = i_fmto = PIX_FMT_GRAY8;
i_sws_flags = SWS_POINT;
}
}
FixParameters( &i_fmti, &b_has_ai, &b_swap_uvi, p_fmti->i_chroma );
FixParameters( &i_fmto, &b_has_ao, &b_swap_uvo, p_fmto->i_chroma );
#if !defined (__ANDROID__) && !defined(TARGET_OS_IPHONE)
/* FIXME TODO removed when ffmpeg is fixed
* Without SWS_ACCURATE_RND the quality is really bad for some conversions */
switch( i_fmto )
{
case PIX_FMT_ARGB:
case PIX_FMT_RGBA:
case PIX_FMT_ABGR:
i_sws_flags |= SWS_ACCURATE_RND;
break;
}
#endif
if( p_cfg )
{
p_cfg->i_fmti = i_fmti;
p_cfg->i_fmto = i_fmto;
p_cfg->b_has_a = b_has_ai && b_has_ao;
p_cfg->b_add_a = (!b_has_ai) && b_has_ao;
p_cfg->b_copy = i_fmti == i_fmto &&
p_fmti->i_width == p_fmto->i_width &&
p_fmti->i_height == p_fmto->i_height;
p_cfg->b_swap_uvi = b_swap_uvi;
p_cfg->b_swap_uvo = b_swap_uvo;
p_cfg->i_sws_flags = i_sws_flags;
}
if( i_fmti < 0 || i_fmto < 0 )
return VLC_EGENERIC;
return VLC_SUCCESS;
}
