static int Init( filter_t *p_filter )
{
filter_sys_t *p_sys = p_filter->p_sys;
if( IsFmtSimilar( &p_filter->fmt_in.video, &p_sys->fmt_in ) &&
IsFmtSimilar( &p_filter->fmt_out.video, &p_sys->fmt_out ) &&
p_sys->ctx )
{
return VLC_SUCCESS;
}
if( ( p_filter->fmt_in.video.i_chroma != VLC_CODEC_I420 &&
p_filter->fmt_in.video.i_chroma != VLC_CODEC_YV12 ) ||
p_filter->fmt_out.video.i_chroma != VLC_FOURCC('Y','4','2','0') )
{
msg_Err( p_filter, "format not supported" );
return VLC_EGENERIC;
}
if( p_sys->ctx )
sws_arm_jit_free( p_sys->ctx );
p_sys->ctx =
sws_arm_jit_create_omapfb_yuv420_scaler_armv6(
p_filter->fmt_in.video.i_width,
p_filter->fmt_in.video.i_height,
p_filter->fmt_out.video.i_width,
p_filter->fmt_out.video.i_height, 2 );
if( !p_sys->ctx )
{
msg_Err( p_filter, "could not init SwScaler" );
return VLC_EGENERIC;
}
p_sys->fmt_in = p_filter->fmt_in;
p_sys->fmt_out = p_filter->fmt_out;
return VLC_SUCCESS;
}
static int Init( filter_t *p_filter )
{
filter_sys_t *p_sys = p_filter->p_sys;
const video_format_t *p_fmti = &p_filter->fmt_in.video;
video_format_t *p_fmto = &p_filter->fmt_out.video;
if( IsFmtSimilar( p_fmti, &p_sys->fmt_in ) &&
IsFmtSimilar( p_fmto, &p_sys->fmt_out ) &&
p_sys->ctx )
{
return VLC_SUCCESS;
}
Clean( p_filter );
/* Init with new parameters */
ScalerConfiguration cfg;
if( GetParameters( &cfg, p_fmti, p_fmto, p_sys->i_sws_flags ) )
{
msg_Err( p_filter, "format not supported" );
return VLC_EGENERIC;
}
if( p_fmti->i_width <= 0 || p_fmto->i_width <= 0 )
{
msg_Err( p_filter, "0 width not supported" );
return VLC_EGENERIC;
}
/* swscale does not like too small width */
p_sys->i_extend_factor = 1;
while( __MIN( p_fmti->i_width, p_fmto->i_width ) * p_sys->i_extend_factor < MINIMUM_WIDTH)
p_sys->i_extend_factor++;
const unsigned i_fmti_width = p_fmti->i_width * p_sys->i_extend_factor;
const unsigned i_fmto_width = p_fmto->i_width * p_sys->i_extend_factor;
for( int n = 0; n < (cfg.b_has_a ? 2 : 1); n++ )
{
const int i_fmti = n == 0 ? cfg.i_fmti : PIX_FMT_GRAY8;
const int i_fmto = n == 0 ? cfg.i_fmto : PIX_FMT_GRAY8;
struct SwsContext *ctx;
ctx = sws_getContext( i_fmti_width, p_fmti->i_height, i_fmti,
i_fmto_width, p_fmto->i_height, i_fmto,
cfg.i_sws_flags | p_sys->i_cpu_mask,
p_sys->p_src_filter, p_sys->p_dst_filter, 0 );
if( n == 0 )
p_sys->ctx = ctx;
else
p_sys->ctxA = ctx;
}
if( p_sys->ctxA )
{
p_sys->p_src_a = picture_New( VLC_CODEC_GREY, i_fmti_width, p_fmti->i_height, 0, 1 );
p_sys->p_dst_a = picture_New( VLC_CODEC_GREY, i_fmto_width, p_fmto->i_height, 0, 1 );
}
if( p_sys->i_extend_factor != 1 )
{
p_sys->p_src_e = picture_New( p_fmti->i_chroma, i_fmti_width, p_fmti->i_height, 0, 1 );
p_sys->p_dst_e = picture_New( p_fmto->i_chroma, i_fmto_width, p_fmto->i_height, 0, 1 );
if( p_sys->p_src_e )
memset( p_sys->p_src_e->p[0].p_pixels, 0, p_sys->p_src_e->p[0].i_pitch * p_sys->p_src_e->p[0].i_lines );
if( p_sys->p_dst_e )
memset( p_sys->p_dst_e->p[0].p_pixels, 0, p_sys->p_dst_e->p[0].i_pitch * p_sys->p_dst_e->p[0].i_lines );
}
if( !p_sys->ctx ||
( cfg.b_has_a && ( !p_sys->ctxA || !p_sys->p_src_a || !p_sys->p_dst_a ) ) ||
( p_sys->i_extend_factor != 1 && ( !p_sys->p_src_e || !p_sys->p_dst_e ) ) )
{
msg_Err( p_filter, "could not init SwScaler and/or allocate memory" );
Clean( p_filter );
return VLC_EGENERIC;
}
p_sys->b_add_a = cfg.b_add_a;
p_sys->b_copy = cfg.b_copy;
p_sys->fmt_in = *p_fmti;
p_sys->fmt_out = *p_fmto;
p_sys->b_swap_uvi = cfg.b_swap_uvi;
p_sys->b_swap_uvo = cfg.b_swap_uvo;
video_format_ScaleCropAr( p_fmto, p_fmti );
#if 0
msg_Dbg( p_filter, "%ix%i chroma: %4.4s -> %ix%i chroma: %4.4s extend by %d",
p_fmti->i_width, p_fmti->i_height, (char *)&p_fmti->i_chroma,
p_fmto->i_width, p_fmto->i_height, (char *)&p_fmto->i_chroma,
p_sys->i_extend_factor );
#endif
return VLC_SUCCESS;
}
