static int CreateResizeChromaChain( filter_t *p_parent, const es_format_t *p_fmt_mid )
{
filter_sys_t *p_sys = p_parent->p_sys;
filter_chain_Reset( p_sys->p_chain, &p_parent->fmt_in, &p_parent->fmt_out );
int i_ret = filter_chain_AppendConverter( p_sys->p_chain,
NULL, p_fmt_mid );
if( i_ret != VLC_SUCCESS )
return i_ret;
if( p_parent->b_allow_fmt_out_change )
{
/* XXX: Update i_sar_num/i_sar_den from last converter. Cf.
* p_filter->b_allow_fmt_out_change comment in video_chroma/swscale.c.
* */
es_format_t fmt_out;
es_format_Copy( &fmt_out,
filter_chain_GetFmtOut( p_sys->p_chain ) );
fmt_out.video.i_chroma = p_parent->fmt_out.video.i_chroma;
i_ret = filter_chain_AppendConverter( p_sys->p_chain,
NULL, &fmt_out );
es_format_Clean( &fmt_out );
}
else
i_ret = filter_chain_AppendConverter( p_sys->p_chain,
NULL, &p_parent->fmt_out );
if( i_ret != VLC_SUCCESS )
filter_chain_Reset( p_sys->p_chain, NULL, NULL );
return i_ret;
}
/*****************************************************************************
* Builders
*****************************************************************************/
static int BuildChromaResize( filter_t *p_filter )
{
filter_sys_t *p_sys = p_filter->p_sys;
es_format_t fmt_mid;
int i_ret;
/* Lets try resizing and then doing the chroma conversion */
filter_chain_Reset( p_sys->p_chain, &p_filter->fmt_in, &p_filter->fmt_out );
msg_Dbg( p_filter, "Trying to build resize+chroma" );
EsFormatMergeSize( &fmt_mid, &p_filter->fmt_in, &p_filter->fmt_out );
i_ret = CreateChain( p_sys->p_chain, &fmt_mid, NULL );
es_format_Clean( &fmt_mid );
if( i_ret == VLC_SUCCESS )
return VLC_SUCCESS;
/* Lets try it the other way arround (chroma and then resize) */
filter_chain_Reset( p_sys->p_chain, &p_filter->fmt_in, &p_filter->fmt_out );
msg_Dbg( p_filter, "Trying to build chroma+resize" );
EsFormatMergeSize( &fmt_mid, &p_filter->fmt_out, &p_filter->fmt_in );
i_ret = CreateChain( p_sys->p_chain, &fmt_mid, NULL );
es_format_Clean( &fmt_mid );
if( i_ret == VLC_SUCCESS )
return VLC_SUCCESS;
return VLC_EGENERIC;
}
static int BuildFilterChain( filter_t *p_filter )
{
es_format_t fmt_mid;
int i_ret = VLC_EGENERIC;
filter_sys_t *p_sys = p_filter->p_sys;
/* Now try chroma format list */
const vlc_fourcc_t *pi_allowed_chromas = get_allowed_chromas( p_filter );
for( int i = 0; pi_allowed_chromas[i]; i++ )
{
filter_chain_Reset( p_sys->p_chain, &p_filter->fmt_in, &p_filter->fmt_out );
const vlc_fourcc_t i_chroma = pi_allowed_chromas[i];
if( i_chroma == p_filter->fmt_in.i_codec ||
i_chroma == p_filter->fmt_out.i_codec )
continue;
msg_Dbg( p_filter, "Trying to use chroma %4.4s as middle man",
(char*)&i_chroma );
es_format_Copy( &fmt_mid, &p_filter->fmt_in );
fmt_mid.i_codec =
fmt_mid.video.i_chroma = i_chroma;
fmt_mid.video.i_rmask = 0;
fmt_mid.video.i_gmask = 0;
fmt_mid.video.i_bmask = 0;
video_format_FixRgb(&fmt_mid.video);
if( filter_chain_AppendConverter( p_sys->p_chain,
NULL, &fmt_mid ) == VLC_SUCCESS )
{
p_sys->p_video_filter =
filter_chain_AppendFilter( p_sys->p_chain,
p_filter->psz_name, p_filter->p_cfg,
&fmt_mid, &fmt_mid );
if( p_sys->p_video_filter )
{
filter_AddProxyCallbacks( p_filter,
p_sys->p_video_filter,
RestartFilterCallback );
if (p_sys->p_video_filter->pf_video_mouse != NULL)
p_filter->pf_video_mouse = ChainMouse;
es_format_Clean( &fmt_mid );
i_ret = VLC_SUCCESS;
break;
}
}
es_format_Clean( &fmt_mid );
}
if( i_ret != VLC_SUCCESS )
filter_chain_Reset( p_sys->p_chain, &p_filter->fmt_in, &p_filter->fmt_out );
return i_ret;
}
static void transcode_video_filter_init( sout_stream_t *p_stream,
sout_stream_id_t *id )
{
es_format_t *p_fmt_out = &id->p_decoder->fmt_out;
id->p_encoder->fmt_in.video.i_chroma = id->p_encoder->fmt_in.i_codec;
id->p_f_chain = filter_chain_New( p_stream, "video filter2",
false,
transcode_video_filter_allocation_init,
transcode_video_filter_allocation_clear,
p_stream->p_sys );
filter_chain_Reset( id->p_f_chain, p_fmt_out, p_fmt_out );
/* Deinterlace */
if( p_stream->p_sys->b_deinterlace )
{
filter_chain_AppendFilter( id->p_f_chain,
p_stream->p_sys->psz_deinterlace,
p_stream->p_sys->p_deinterlace_cfg,
&id->p_decoder->fmt_out,
&id->p_decoder->fmt_out );
p_fmt_out = filter_chain_GetFmtOut( id->p_f_chain );
}
/* Check that we have visible_width/height*/
if( !p_fmt_out->video.i_visible_height )
p_fmt_out->video.i_visible_height = p_fmt_out->video.i_height;
if( !p_fmt_out->video.i_visible_width )
p_fmt_out->video.i_visible_width = p_fmt_out->video.i_width;
if( p_stream->p_sys->psz_vf2 )
{
id->p_uf_chain = filter_chain_New( p_stream, "video filter2",
true,
transcode_video_filter_allocation_init,
transcode_video_filter_allocation_clear,
p_stream->p_sys );
filter_chain_Reset( id->p_uf_chain, p_fmt_out,
&id->p_encoder->fmt_in );
filter_chain_AppendFromString( id->p_uf_chain, p_stream->p_sys->psz_vf2 );
p_fmt_out = filter_chain_GetFmtOut( id->p_uf_chain );
es_format_Copy( &id->p_encoder->fmt_in, p_fmt_out );
id->p_encoder->fmt_out.video.i_width =
id->p_encoder->fmt_in.video.i_width;
id->p_encoder->fmt_out.video.i_height =
id->p_encoder->fmt_in.video.i_height;
id->p_encoder->fmt_out.video.i_sar_num =
id->p_encoder->fmt_in.video.i_sar_num;
id->p_encoder->fmt_out.video.i_sar_den =
id->p_encoder->fmt_in.video.i_sar_den;
}
}
/**
* Filter chain destruction
*/
void filter_chain_Delete( filter_chain_t *p_chain )
{
filter_chain_Reset( p_chain, NULL, NULL );
es_format_Clean( &p_chain->fmt_in );
es_format_Clean( &p_chain->fmt_out );
free( p_chain );
}
static void transcode_video_filter_init( sout_stream_t *p_stream,
sout_stream_id_t *id )
{
id->p_f_chain = filter_chain_New( p_stream, "video filter2",
false,
transcode_video_filter_allocation_init,
transcode_video_filter_allocation_clear,
p_stream->p_sys );
/* Deinterlace */
if( p_stream->p_sys->b_deinterlace )
{
filter_chain_AppendFilter( id->p_f_chain,
p_stream->p_sys->psz_deinterlace,
p_stream->p_sys->p_deinterlace_cfg,
&id->p_decoder->fmt_out,
&id->p_decoder->fmt_out );
}
/* Take care of the scaling and chroma conversions */
if( ( id->p_decoder->fmt_out.video.i_chroma !=
id->p_encoder->fmt_in.video.i_chroma ) ||
( id->p_decoder->fmt_out.video.i_width !=
id->p_encoder->fmt_in.video.i_width ) ||
( id->p_decoder->fmt_out.video.i_height !=
id->p_encoder->fmt_in.video.i_height ) )
{
filter_chain_AppendFilter( id->p_f_chain,
NULL, NULL,
&id->p_decoder->fmt_out,
&id->p_encoder->fmt_in );
}
if( p_stream->p_sys->psz_vf2 )
{
const es_format_t *p_fmt_out;
id->p_uf_chain = filter_chain_New( p_stream, "video filter2",
true,
transcode_video_filter_allocation_init,
transcode_video_filter_allocation_clear,
p_stream->p_sys );
filter_chain_Reset( id->p_uf_chain, &id->p_encoder->fmt_in,
&id->p_encoder->fmt_in );
filter_chain_AppendFromString( id->p_uf_chain, p_stream->p_sys->psz_vf2 );
p_fmt_out = filter_chain_GetFmtOut( id->p_uf_chain );
es_format_Copy( &id->p_encoder->fmt_in, p_fmt_out );
id->p_encoder->fmt_out.video.i_width =
id->p_encoder->fmt_in.video.i_width;
id->p_encoder->fmt_out.video.i_height =
id->p_encoder->fmt_in.video.i_height;
id->p_encoder->fmt_out.video.i_sar_num =
id->p_encoder->fmt_in.video.i_sar_num;
id->p_encoder->fmt_out.video.i_sar_den =
id->p_encoder->fmt_in.video.i_sar_den;
}
}
static int CreateChain( filter_t *p_parent, const es_format_t *p_fmt_mid )
{
filter_sys_t *p_sys = p_parent->p_sys;
filter_chain_Reset( p_sys->p_chain, &p_parent->fmt_in, &p_parent->fmt_out );
filter_t *p_filter;
if( p_parent->fmt_in.video.orientation != p_fmt_mid->video.orientation)
{
p_filter = AppendTransform( p_sys->p_chain, &p_parent->fmt_in, p_fmt_mid );
// Check if filter was enough:
if( p_filter == NULL )
return VLC_EGENERIC;
if( es_format_IsSimilar(&p_filter->fmt_out, &p_parent->fmt_out ))
return VLC_SUCCESS;
}
else
{
if( filter_chain_AppendConverter( p_sys->p_chain,
NULL, p_fmt_mid ) )
return VLC_EGENERIC;
}
if( p_fmt_mid->video.orientation != p_parent->fmt_out.video.orientation)
{
if( AppendTransform( p_sys->p_chain, p_fmt_mid,
&p_parent->fmt_out ) == NULL )
goto error;
}
else
{
if( filter_chain_AppendConverter( p_sys->p_chain,
p_fmt_mid, &p_parent->fmt_out ) )
goto error;
}
return VLC_SUCCESS;
error:
//Clean up.
filter_chain_Reset( p_sys->p_chain, NULL, NULL );
return VLC_EGENERIC;
}
static int CreateChain( filter_t *p_parent, es_format_t *p_fmt_mid, config_chain_t *p_cfg )
{
filter_chain_Reset( p_parent->p_sys->p_chain, &p_parent->fmt_in, &p_parent->fmt_out );
filter_t *p_filter;
if( p_parent->fmt_in.video.orientation != p_fmt_mid->video.orientation)
{
p_filter = AppendTransform( p_parent->p_sys->p_chain, &p_parent->fmt_in, p_fmt_mid );
}
else
{
p_filter = filter_chain_AppendFilter( p_parent->p_sys->p_chain, NULL, p_cfg, NULL, p_fmt_mid );
}
if( !p_filter )
return VLC_EGENERIC;
//Check if first filter was enough (transform filter most likely):
if( es_format_IsSimilar(&p_filter->fmt_out, &p_parent->fmt_out ))
return VLC_SUCCESS;
if( p_fmt_mid->video.orientation != p_parent->fmt_out.video.orientation)
{
p_filter = AppendTransform( p_parent->p_sys->p_chain, p_fmt_mid, &p_parent->fmt_out );
}
else
{
p_filter = filter_chain_AppendFilter( p_parent->p_sys->p_chain, NULL, p_cfg, p_fmt_mid, NULL );
}
if( !p_filter )
{
//Clean up.
filter_chain_Reset( p_parent->p_sys->p_chain, NULL, NULL );
return VLC_EGENERIC;
}
return VLC_SUCCESS;
}
static sout_stream_id_sys_t * Add( sout_stream_t *p_stream, const es_format_t *p_fmt )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
bridge_t *p_bridge;
bridged_es_t *p_es;
char *psz_chain;
int i;
if( p_sys->b_inited || p_fmt->i_cat != VIDEO_ES )
return NULL;
/* Create decoder object */
p_sys->p_decoder = vlc_object_create( p_stream, sizeof( decoder_t ) );
if( !p_sys->p_decoder )
return NULL;
p_sys->p_decoder->p_module = NULL;
p_sys->p_decoder->fmt_in = *p_fmt;
p_sys->p_decoder->b_frame_drop_allowed = true;
p_sys->p_decoder->fmt_out = p_sys->p_decoder->fmt_in;
p_sys->p_decoder->fmt_out.i_extra = 0;
p_sys->p_decoder->fmt_out.p_extra = 0;
p_sys->p_decoder->pf_decode_video = 0;
p_sys->p_decoder->pf_vout_format_update = video_update_format_decoder;
p_sys->p_decoder->pf_vout_buffer_new = video_new_buffer_decoder;
p_sys->p_decoder->p_owner = malloc( sizeof(decoder_owner_sys_t) );
if( !p_sys->p_decoder->p_owner )
{
vlc_object_release( p_sys->p_decoder );
return NULL;
}
p_sys->p_decoder->p_owner->video = p_fmt->video;
//p_sys->p_decoder->p_cfg = p_sys->p_video_cfg;
p_sys->p_decoder->p_module =
module_need( p_sys->p_decoder, "decoder", "$codec", false );
if( !p_sys->p_decoder->p_module || !p_sys->p_decoder->pf_decode_video )
{
if( p_sys->p_decoder->p_module )
{
msg_Err( p_stream, "instanciated a non video decoder" );
module_unneed( p_sys->p_decoder, p_sys->p_decoder->p_module );
}
else
{
msg_Err( p_stream, "cannot find decoder" );
}
free( p_sys->p_decoder->p_owner );
vlc_object_release( p_sys->p_decoder );
return NULL;
}
p_sys->b_inited = true;
vlc_global_lock( VLC_MOSAIC_MUTEX );
p_bridge = GetBridge( p_stream );
if ( p_bridge == NULL )
{
vlc_object_t *p_libvlc = VLC_OBJECT( p_stream->obj.libvlc );
vlc_value_t val;
p_bridge = xmalloc( sizeof( bridge_t ) );
var_Create( p_libvlc, "mosaic-struct", VLC_VAR_ADDRESS );
val.p_address = p_bridge;
var_Set( p_libvlc, "mosaic-struct", val );
p_bridge->i_es_num = 0;
p_bridge->pp_es = NULL;
}
for ( i = 0; i < p_bridge->i_es_num; i++ )
{
if ( p_bridge->pp_es[i]->b_empty )
break;
}
if ( i == p_bridge->i_es_num )
{
p_bridge->pp_es = xrealloc( p_bridge->pp_es,
(p_bridge->i_es_num + 1) * sizeof(bridged_es_t *) );
p_bridge->i_es_num++;
p_bridge->pp_es[i] = xmalloc( sizeof(bridged_es_t) );
}
p_sys->p_es = p_es = p_bridge->pp_es[i];
p_es->i_alpha = var_GetInteger( p_stream, CFG_PREFIX "alpha" );
p_es->i_x = var_GetInteger( p_stream, CFG_PREFIX "x" );
p_es->i_y = var_GetInteger( p_stream, CFG_PREFIX "y" );
//p_es->fmt = *p_fmt;
p_es->psz_id = p_sys->psz_id;
p_es->p_picture = NULL;
p_es->pp_last = &p_es->p_picture;
p_es->b_empty = false;
vlc_global_unlock( VLC_MOSAIC_MUTEX );
if ( p_sys->i_height || p_sys->i_width )
{
p_sys->p_image = image_HandlerCreate( p_stream );
}
else
{
p_sys->p_image = NULL;
}
msg_Dbg( p_stream, "mosaic bridge id=%s pos=%d", p_es->psz_id, i );
/* Create user specified video filters */
psz_chain = var_GetNonEmptyString( p_stream, CFG_PREFIX "vfilter" );
msg_Dbg( p_stream, "psz_chain: %s", psz_chain );
if( psz_chain )
{
filter_owner_t owner = {
.sys = p_sys->p_decoder->p_owner,
.video = {
.buffer_new = video_new_buffer_filter,
},
};
p_sys->p_vf2 = filter_chain_NewVideo( p_stream, false, &owner );
es_format_t fmt;
es_format_Copy( &fmt, &p_sys->p_decoder->fmt_out );
if( p_sys->i_chroma )
fmt.video.i_chroma = p_sys->i_chroma;
filter_chain_Reset( p_sys->p_vf2, &fmt, &fmt );
filter_chain_AppendFromString( p_sys->p_vf2, psz_chain );
free( psz_chain );
}
else
{
int transcode_audio_new( sout_stream_t *p_stream,
sout_stream_id_t *id )
{
sout_stream_sys_t *p_sys = p_stream->p_sys;
es_format_t fmt_last;
/*
* Open decoder
*/
/* Initialization of decoder structures */
id->p_decoder->fmt_out = id->p_decoder->fmt_in;
id->p_decoder->fmt_out.i_extra = 0;
id->p_decoder->fmt_out.p_extra = 0;
id->p_decoder->pf_decode_audio = NULL;
id->p_decoder->pf_aout_buffer_new = audio_new_buffer;
id->p_decoder->pf_aout_buffer_del = audio_del_buffer;
/* id->p_decoder->p_cfg = p_sys->p_audio_cfg; */
id->p_decoder->p_module =
module_need( id->p_decoder, "decoder", "$codec", false );
if( !id->p_decoder->p_module )
{
msg_Err( p_stream, "cannot find audio decoder" );
return VLC_EGENERIC;
}
id->p_decoder->fmt_out.audio.i_bitspersample =
aout_BitsPerSample( id->p_decoder->fmt_out.i_codec );
fmt_last = id->p_decoder->fmt_out;
/* Fix AAC SBR changing number of channels and sampling rate */
if( !(id->p_decoder->fmt_in.i_codec == VLC_CODEC_MP4A &&
fmt_last.audio.i_rate != id->p_encoder->fmt_in.audio.i_rate &&
fmt_last.audio.i_channels != id->p_encoder->fmt_in.audio.i_channels) )
fmt_last.audio.i_rate = id->p_decoder->fmt_in.audio.i_rate;
/*
* Open encoder
*/
/* Initialization of encoder format structures */
es_format_Init( &id->p_encoder->fmt_in, id->p_decoder->fmt_in.i_cat,
id->p_decoder->fmt_out.i_codec );
id->p_encoder->fmt_in.audio.i_format = id->p_decoder->fmt_out.i_codec;
id->p_encoder->fmt_in.audio.i_rate = id->p_encoder->fmt_out.audio.i_rate;
id->p_encoder->fmt_in.audio.i_physical_channels =
id->p_encoder->fmt_out.audio.i_physical_channels;
id->p_encoder->fmt_in.audio.i_original_channels =
id->p_encoder->fmt_out.audio.i_original_channels;
id->p_encoder->fmt_in.audio.i_channels =
id->p_encoder->fmt_out.audio.i_channels;
id->p_encoder->fmt_in.audio.i_bitspersample =
aout_BitsPerSample( id->p_encoder->fmt_in.i_codec );
id->p_encoder->p_cfg = p_stream->p_sys->p_audio_cfg;
id->p_encoder->p_module =
module_need( id->p_encoder, "encoder", p_sys->psz_aenc, true );
if( !id->p_encoder->p_module )
{
msg_Err( p_stream, "cannot find audio encoder (module:%s fourcc:%4.4s)",
p_sys->psz_aenc ? p_sys->psz_aenc : "any",
(char *)&p_sys->i_acodec );
module_unneed( id->p_decoder, id->p_decoder->p_module );
id->p_decoder->p_module = NULL;
return VLC_EGENERIC;
}
id->p_encoder->fmt_in.audio.i_format = id->p_encoder->fmt_in.i_codec;
id->p_encoder->fmt_in.audio.i_bitspersample =
aout_BitsPerSample( id->p_encoder->fmt_in.i_codec );
/* Load user specified audio filters */
if( p_sys->psz_af )
{
es_format_t fmt_fl32 = fmt_last;
fmt_fl32.i_codec =
fmt_fl32.audio.i_format = VLC_CODEC_FL32;
id->p_uf_chain = filter_chain_New( p_stream, "audio filter", false,
transcode_audio_filter_allocation_init, NULL, NULL );
filter_chain_Reset( id->p_uf_chain, &fmt_last, &fmt_fl32 );
if( transcode_audio_filter_chain_build( p_stream, id->p_uf_chain,
&fmt_fl32, &fmt_last ) )
{
transcode_audio_close( id );
return VLC_EGENERIC;
}
fmt_last = fmt_fl32;
if( filter_chain_AppendFromString( id->p_uf_chain, p_sys->psz_af ) > 0 )
fmt_last = *filter_chain_GetFmtOut( id->p_uf_chain );
}
/* Load conversion filters */
id->p_f_chain = filter_chain_New( p_stream, "audio filter", true,
transcode_audio_filter_allocation_init, NULL, NULL );
filter_chain_Reset( id->p_f_chain, &fmt_last, &id->p_encoder->fmt_in );
if( transcode_audio_filter_chain_build( p_stream, id->p_f_chain,
&id->p_encoder->fmt_in, &fmt_last ) )
{
transcode_audio_close( id );
return VLC_EGENERIC;
}
fmt_last = id->p_encoder->fmt_in;
/* */
id->p_encoder->fmt_out.i_codec =
vlc_fourcc_GetCodec( AUDIO_ES, id->p_encoder->fmt_out.i_codec );
return VLC_SUCCESS;
}
static int BuildChromaChain( filter_t *p_filter )
{
filter_sys_t *p_sys = p_filter->p_sys;
es_format_t fmt_mid;
/* We have to protect ourself against a too high recursion */
const char *psz_option = MODULE_STRING"-level";
int i_level = 0;
for( const config_chain_t *c = p_filter->p_cfg; c != NULL; c = c->p_next)
{
if( c->psz_name && c->psz_value && !strcmp(c->psz_name, psz_option) )
{
i_level = atoi(c->psz_value);
if( i_level < 0 || i_level > CHAIN_LEVEL_MAX )
{
msg_Err( p_filter, "Too high level of recursion (%d)", i_level );
return VLC_EGENERIC;
}
break;
}
}
/* */
int i_ret = VLC_EGENERIC;
/* */
config_chain_t cfg_level;
memset(&cfg_level, 0, sizeof(cfg_level));
cfg_level.psz_name = strdup(psz_option);
if( asprintf( &cfg_level.psz_value, "%d", i_level + 1) < 0 )
cfg_level.psz_value = NULL;
if( !cfg_level.psz_name || !cfg_level.psz_value )
goto exit;
/* Now try chroma format list */
for( int i = 0; pi_allowed_chromas[i]; i++ )
{
const vlc_fourcc_t i_chroma = pi_allowed_chromas[i];
if( i_chroma == p_filter->fmt_in.i_codec ||
i_chroma == p_filter->fmt_out.i_codec )
continue;
msg_Dbg( p_filter, "Trying to use chroma %4.4s as middle man",
(char*)&i_chroma );
es_format_Copy( &fmt_mid, &p_filter->fmt_in );
fmt_mid.i_codec =
fmt_mid.video.i_chroma = i_chroma;
fmt_mid.video.i_rmask = 0;
fmt_mid.video.i_gmask = 0;
fmt_mid.video.i_bmask = 0;
video_format_FixRgb(&fmt_mid.video);
filter_chain_Reset( p_sys->p_chain, &p_filter->fmt_in, &p_filter->fmt_out );
i_ret = CreateChain( p_sys->p_chain, &fmt_mid, &cfg_level );
es_format_Clean( &fmt_mid );
if( i_ret == VLC_SUCCESS )
break;
}
exit:
free( cfg_level.psz_name );
free( cfg_level.psz_value );
return i_ret;
}
static int Activate( vlc_object_t *p_this )
{
filter_t *p_filter = (filter_t *)p_this;
unsigned i_canvas_width; /* width of output canvas */
unsigned i_canvas_height; /* height of output canvas */
unsigned i_canvas_aspect; /* canvas PictureAspectRatio */
es_format_t fmt; /* target format after up/down conversion */
char psz_croppadd[100];
int i_padd,i_offset;
char *psz_aspect, *psz_parser;
bool b_padd;
unsigned i_fmt_in_aspect;
if( !p_filter->b_allow_fmt_out_change )
{
msg_Err( p_filter, "Picture format change isn't allowed" );
return VLC_EGENERIC;
}
if( p_filter->fmt_in.video.i_chroma != p_filter->fmt_out.video.i_chroma )
{
msg_Err( p_filter, "Input and output chromas don't match" );
return VLC_EGENERIC;
}
config_ChainParse( p_filter, CFG_PREFIX, ppsz_filter_options,
p_filter->p_cfg );
i_canvas_width = var_CreateGetInteger( p_filter, CFG_PREFIX "width" );
i_canvas_height = var_CreateGetInteger( p_filter, CFG_PREFIX "height" );
if( i_canvas_width == 0 || i_canvas_height == 0 )
{
msg_Err( p_filter, "Width and height options must be set" );
return VLC_EGENERIC;
}
if( i_canvas_width & 1 || i_canvas_height & 1 )
{
/* If this restriction were ever relaxed, it is very important to
* get the field polatiry correct */
msg_Err( p_filter, "Width and height options must be even integers" );
return VLC_EGENERIC;
}
i_fmt_in_aspect = (int64_t)p_filter->fmt_in.video.i_sar_num *
p_filter->fmt_in.video.i_width *
VOUT_ASPECT_FACTOR /
p_filter->fmt_in.video.i_sar_den /
p_filter->fmt_in.video.i_height;
psz_aspect = var_CreateGetNonEmptyString( p_filter, CFG_PREFIX "aspect" );
if( psz_aspect )
{
psz_parser = strchr( psz_aspect, ':' );
int numerator = atoi( psz_aspect );
int denominator = psz_parser ? atoi( psz_parser+1 ) : 0;
denominator = denominator == 0 ? 1 : denominator;
i_canvas_aspect = numerator * VOUT_ASPECT_FACTOR / denominator;
free( psz_aspect );
if( numerator <= 0 || denominator < 0 )
{
msg_Err( p_filter, "Aspect ratio must be strictly positive" );
return VLC_EGENERIC;
}
}
else
{
/* if there is no user supplied aspect ratio, assume the canvas
* has the same sample aspect ratio as the subpicture */
/* aspect = subpic_sar * canvas_width / canvas_height
* where subpic_sar = subpic_ph * subpic_par / subpic_pw */
i_canvas_aspect = (uint64_t) p_filter->fmt_in.video.i_height
* i_fmt_in_aspect
* i_canvas_width
/ (i_canvas_height * p_filter->fmt_in.video.i_width);
}
b_padd = var_CreateGetBool( p_filter, CFG_PREFIX "padd" );
filter_sys_t *p_sys = (filter_sys_t *)malloc( sizeof( filter_sys_t ) );
if( !p_sys )
return VLC_ENOMEM;
p_filter->p_sys = p_sys;
p_sys->p_chain = filter_chain_New( p_filter, "video filter2", true,
alloc_init, NULL, p_filter );
if( !p_sys->p_chain )
{
msg_Err( p_filter, "Could not allocate filter chain" );
free( p_sys );
return VLC_EGENERIC;
}
es_format_Copy( &fmt, &p_filter->fmt_in );
/* one dimension will end up with one of the following: */
fmt.video.i_width = i_canvas_width;
fmt.video.i_height = i_canvas_height;
if( b_padd )
{
/* Padd */
if( i_canvas_aspect > i_fmt_in_aspect )
{
/* The canvas has a wider aspect than the subpicture:
* ie, pillarbox the [scaled] subpicture */
/* The following is derived form:
* width = upconverted_subpic_height * subpic_par / canvas_sar
* where canvas_sar = canvas_width / (canvas_height * canvas_par)
* then simplify */
fmt.video.i_width = i_canvas_width
* i_fmt_in_aspect
/ i_canvas_aspect;
if( fmt.video.i_width & 1 ) fmt.video.i_width -= 1;
i_padd = (i_canvas_width - fmt.video.i_width) / 2;
i_offset = (i_padd & 1);
_snprintf( psz_croppadd, 100, "croppadd{paddleft=%d,paddright=%d}",
i_padd - i_offset, i_padd + i_offset ); // sunqueen modify
}
else
{
/* The canvas has a taller aspect than the subpicture:
* ie, letterbox the [scaled] subpicture */
fmt.video.i_height = i_canvas_height
* i_canvas_aspect
/ i_fmt_in_aspect;
if( fmt.video.i_height & 1 ) fmt.video.i_height -= 1;
i_padd = (i_canvas_height - fmt.video.i_height ) / 2;
i_offset = (i_padd & 1);
_snprintf( psz_croppadd, 100, "croppadd{paddtop=%d,paddbottom=%d}",
i_padd - i_offset, i_padd + i_offset ); // sunqueen modify
}
}
else
{
/* Crop */
if( i_canvas_aspect < i_fmt_in_aspect )
{
/* The canvas has a narrower aspect than the subpicture:
* ie, crop the [scaled] subpicture horizontally */
fmt.video.i_width = i_canvas_width
* i_fmt_in_aspect
/ i_canvas_aspect;
if( fmt.video.i_width & 1 ) fmt.video.i_width -= 1;
i_padd = (fmt.video.i_width - i_canvas_width) / 2;
i_offset = (i_padd & 1);
_snprintf( psz_croppadd, 100, "croppadd{cropleft=%d,cropright=%d}",
i_padd - i_offset, i_padd + i_offset ); // sunqueen modify
}
else
{
/* The canvas has a shorter aspect than the subpicture:
* ie, crop the [scaled] subpicture vertically */
fmt.video.i_height = i_canvas_height
* i_canvas_aspect
/ i_fmt_in_aspect;
if( fmt.video.i_height & 1 ) fmt.video.i_height -= 1;
i_padd = (fmt.video.i_height - i_canvas_height) / 2;
i_offset = (i_padd & 1);
_snprintf( psz_croppadd, 100, "croppadd{croptop=%d,cropbottom=%d}",
i_padd - i_offset, i_padd + i_offset ); // sunqueen modify
}
}
/* xxx, should the clean area include the letter-boxing?
* probably not, as some codecs can make use of that information
* and it should be a scaled version of the input clean area
* -- davidf */
fmt.video.i_visible_width = fmt.video.i_width;
fmt.video.i_visible_height = fmt.video.i_height;
filter_chain_Reset( p_sys->p_chain, &p_filter->fmt_in, &fmt );
/* Append scaling module */
filter_chain_AppendFilter( p_sys->p_chain, NULL, NULL, NULL, NULL );
/* Append padding module */
filter_chain_AppendFromString( p_sys->p_chain, psz_croppadd );
fmt = *filter_chain_GetFmtOut( p_sys->p_chain );
es_format_Copy( &p_filter->fmt_out, &fmt );
p_filter->fmt_out.video.i_sar_num =
i_canvas_aspect * p_filter->fmt_out.video.i_height;
p_filter->fmt_out.video.i_sar_den =
VOUT_ASPECT_FACTOR * p_filter->fmt_out.video.i_width;
if( p_filter->fmt_out.video.i_width != i_canvas_width
|| p_filter->fmt_out.video.i_height != i_canvas_height )
{
msg_Warn( p_filter, "Looks like something went wrong. "
"Output size is %dx%d while we asked for %dx%d",
p_filter->fmt_out.video.i_width,
p_filter->fmt_out.video.i_height,
i_canvas_width, i_canvas_height );
}
p_filter->pf_video_filter = Filter;
return VLC_SUCCESS;
}