#include <pango/pangoft2.h>
#include <freetype/freetype.h>
+struct producer_pango_s
+{
+ struct mlt_producer_s parent;
+ int width;
+ int height;
+ uint8_t *image;
+ uint8_t *alpha;
+ char *fgcolor;
+ char *bgcolor;
+ int align;
+ int pad;
+ char *markup;
+ char *text;
+ char *font;
+};
+
// special color type used by internal pango routines
typedef struct
{
static int producer_get_frame( mlt_producer parent, mlt_frame_ptr frame, int index );
static void producer_close( mlt_producer parent );
static void pango_draw_background( GdkPixbuf *pixbuf, rgba_color bg );
-static GdkPixbuf *pango_get_pixbuf( const char *markup, rgba_color fg, rgba_color bg, int pad, int align );
+static GdkPixbuf *pango_get_pixbuf( const char *markup, const char *text, const char *font,
+ rgba_color fg, rgba_color bg, int pad, int align );
+
+/** Parse the alignment property.
+*/
+
+static int alignment_parse( char* align )
+{
+ int ret = pango_align_left;
+
+ if ( align == NULL );
+ else if ( isdigit( align[ 0 ] ) )
+ ret = atoi( align );
+ else if ( align[ 0 ] == 'c' || align[ 0 ] == 'm' )
+ ret = pango_align_center;
+ else if ( align[ 0 ] == 'r' )
+ ret = pango_align_right;
+
+ return ret;
+}
-mlt_producer producer_pango_init( const char *markup )
+mlt_producer producer_pango_init( const char *filename )
{
producer_pango this = calloc( sizeof( struct producer_pango_s ), 1 );
if ( this != NULL && mlt_producer_init( &this->parent, this ) == 0 )
producer->get_frame = producer_get_frame;
producer->close = producer_close;
- this->markup = strdup( markup );
+ // This is required to initialise gdk-pixbuf
g_type_init();
// Get the properties interface
mlt_properties properties = mlt_producer_properties( &this->parent );
// Set the default properties
- mlt_properties_set_int( properties, "video_standard", mlt_video_standard_pal );
- mlt_properties_set_int( properties, "fgcolor", 0xffffffff );
- mlt_properties_set_int( properties, "bgcolor", 0x00000000 );
+ mlt_properties_set( properties, "fgcolour", "0xffffffff" );
+ mlt_properties_set( properties, "bgcolour", "0x00000000" );
mlt_properties_set_int( properties, "align", pango_align_left );
mlt_properties_set_int( properties, "pad", 0 );
+ mlt_properties_set( properties, "text", "" );
+ mlt_properties_set( properties, "font", "Sans 48" );
+
+ if ( filename == NULL )
+ {
+ mlt_properties_set( properties, "markup", "" );
+ }
+ else if ( filename[ 0 ] == '+' || strstr( filename, "/+" ) )
+ {
+ char *copy = strdup( filename + 1 );
+ char *markup = copy;
+ if ( strstr( markup, "/+" ) )
+ markup = strstr( markup, "/+" ) + 2;
+ ( *strrchr( markup, '.' ) ) = '\0';
+ while ( strchr( markup, '~' ) )
+ ( *strchr( markup, '~' ) ) = '\n';
+ mlt_properties_set( properties, "resource", ( char * )filename );
+ mlt_properties_set( properties, "markup", markup );
+ free( copy );
+ }
+ else
+ {
+ FILE *f = fopen( filename, "r" );
+ if ( f != NULL )
+ {
+ char line[81];
+ char *markup = NULL;
+ size_t size = 0;
+ line[80] = '\0';
+
+ while ( fgets( line, 80, f ) )
+ {
+ size += strlen( line ) + 1;
+ if ( markup )
+ {
+ markup = realloc( markup, size );
+ strcat( markup, line );
+ }
+ else
+ {
+ markup = strdup( line );
+ }
+ }
+ fclose( f );
+
+ if ( markup[ strlen( markup ) - 1 ] == '\n' )
+ markup[ strlen( markup ) - 1 ] = '\0';
+
+ mlt_properties_set( properties, "resource", ( char * ) filename );
+ mlt_properties_set( properties, "markup", ( char * ) ( markup == NULL ? "" : markup ) );
+ free( markup );
+ }
+ else
+ {
+ mlt_properties_set( properties, "markup", "" );
+ }
+ }
return producer;
}
return NULL;
}
-static int producer_get_image( mlt_frame this, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
+static void set_string( char **string, char *value, char *fallback )
+{
+ if ( value != NULL )
+ {
+ free( *string );
+ *string = strdup( value );
+ }
+ else if ( *string == NULL && fallback != NULL )
+ {
+ *string = strdup( fallback );
+ }
+ else if ( *string != NULL && fallback == NULL )
+ {
+ free( *string );
+ *string = NULL;
+ }
+}
+
+rgba_color parse_color( char *color )
+{
+ rgba_color result = { 0xff, 0xff, 0xff, 0xff };
+
+ if ( !strncmp( color, "0x", 2 ) )
+ {
+ unsigned int temp = 0;
+ sscanf( color + 2, "%x", &temp );
+ result.r = ( temp >> 24 ) & 0xff;
+ result.g = ( temp >> 16 ) & 0xff;
+ result.b = ( temp >> 8 ) & 0xff;
+ result.a = ( temp ) & 0xff;
+ }
+ else if ( !strcmp( color, "red" ) )
+ {
+ result.r = 0xff;
+ result.g = 0x00;
+ result.b = 0x00;
+ }
+ else if ( !strcmp( color, "green" ) )
+ {
+ result.r = 0x00;
+ result.g = 0xff;
+ result.b = 0x00;
+ }
+ else if ( !strcmp( color, "blue" ) )
+ {
+ result.r = 0x00;
+ result.g = 0x00;
+ result.b = 0xff;
+ }
+ else
+ {
+ unsigned int temp = 0;
+ sscanf( color, "%d", &temp );
+ result.r = ( temp >> 24 ) & 0xff;
+ result.g = ( temp >> 16 ) & 0xff;
+ result.b = ( temp >> 8 ) & 0xff;
+ result.a = ( temp ) & 0xff;
+ }
+
+ return result;
+}
+
+static void refresh_image( mlt_frame frame, int width, int height )
{
+ // Pixbuf
+ GdkPixbuf *pixbuf = NULL;
+
// Obtain properties of frame
- mlt_properties properties = mlt_frame_properties( this );
+ mlt_properties properties = mlt_frame_properties( frame );
+
+ // Obtain the producer pango for this frame
+ producer_pango this = mlt_properties_get_data( properties, "producer_pango", NULL );
+
+ // Obtain the producer
+ mlt_producer producer = &this->parent;
+
+ // Obtain the producer properties
+ mlt_properties producer_props = mlt_producer_properties( producer );
+
+ // Get producer properties
+ char *fg = mlt_properties_get( producer_props, "fgcolour" );
+ char *bg = mlt_properties_get( producer_props, "bgcolour" );
+ int align = alignment_parse( mlt_properties_get( producer_props, "align" ) );
+ int pad = mlt_properties_get_int( producer_props, "pad" );
+ char *markup = mlt_properties_get( producer_props, "markup" );
+ char *text = mlt_properties_get( producer_props, "text" );
+ char *font = mlt_properties_get( producer_props, "font" );
+
+ // See if any properties changed
+ int property_changed = ( align != this->align );
+ property_changed = property_changed || ( this->fgcolor == NULL || ( fg && strcmp( fg, this->fgcolor ) ) );
+ property_changed = property_changed || ( this->bgcolor == NULL || ( bg && strcmp( bg, this->bgcolor ) ) );
+ property_changed = property_changed || ( pad != this->pad );
+ property_changed = property_changed || ( markup && this->markup && strcmp( markup, this->markup ) );
+ property_changed = property_changed || ( text && this->text && strcmp( text, this->text ) );
+ property_changed = property_changed || ( font && this->font && strcmp( font, this->font ) );
+
+ // Save the properties for next comparison
+ this->align = align;
+ this->pad = pad;
+ set_string( &this->fgcolor, fg, "0xffffffff" );
+ set_string( &this->bgcolor, bg, "0x00000000" );
+ set_string( &this->markup, markup, NULL );
+ set_string( &this->text, text, NULL );
+ set_string( &this->font, font, "Sans 48" );
+
+ if ( property_changed )
+ {
+ rgba_color fgcolor = parse_color( this->fgcolor );
+ rgba_color bgcolor = parse_color( this->bgcolor );
+
+ mlt_pool_release( this->image );
+ mlt_pool_release( this->alpha );
+ this->image = NULL;
+ this->alpha = NULL;
+
+ // Render the title
+ pixbuf = pango_get_pixbuf( markup, text, font, fgcolor, bgcolor, pad, align );
+
+ if ( pixbuf != NULL )
+ {
+ // Register this pixbuf for destruction and reuse
+ mlt_properties_set_data( producer_props, "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL );
+
+ mlt_properties_set_int( producer_props, "real_width", gdk_pixbuf_get_width( pixbuf ) );
+ mlt_properties_set_int( producer_props, "real_height", gdk_pixbuf_get_height( pixbuf ) );
+
+ // Store the width/height of the pixbuf temporarily
+ this->width = gdk_pixbuf_get_width( pixbuf );
+ this->height = gdk_pixbuf_get_height( pixbuf );
+ }
+ }
+ else if ( width > 0 && ( this->image == NULL || width != this->width || height != this->height ) )
+ {
+ mlt_pool_release( this->image );
+ mlt_pool_release( this->alpha );
+ this->image = NULL;
+ this->alpha = NULL;
+
+ pixbuf = mlt_properties_get_data( producer_props, "pixbuf", NULL );
+ }
+
+ // If we have a pixbuf and a valid width
+ if ( pixbuf && width > 0 )
+ {
+ char *interps = mlt_properties_get( properties, "rescale.interp" );
+ int interp = GDK_INTERP_BILINEAR;
+
+ if ( strcmp( interps, "nearest" ) == 0 )
+ interp = GDK_INTERP_NEAREST;
+ else if ( strcmp( interps, "tiles" ) == 0 )
+ interp = GDK_INTERP_TILES;
+ else if ( strcmp( interps, "hyper" ) == 0 )
+ interp = GDK_INTERP_HYPER;
+
+// fprintf( stderr, "SCALING PANGO from %dx%d to %dx%d was %dx%d\n", gdk_pixbuf_get_width( pixbuf ), gdk_pixbuf_get_height( pixbuf ), width, height, this->width, this->height );
+
+ // Note - the original pixbuf is already safe and ready for destruction
+ pixbuf = gdk_pixbuf_scale_simple( pixbuf, width, height, interp );
+
+ // Store width and height
+ this->width = width;
+ this->height = height;
+
+ // Allocate/define image
+ this->image = mlt_pool_alloc( width * ( height + 1 ) * 2 );
+ this->alpha = mlt_pool_alloc( this->width * this->height );
+
+ // Convert the image
+ mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
+ this->width, this->height,
+ gdk_pixbuf_get_rowstride( pixbuf ),
+ this->image, this->alpha );
+
+ // Finished with pixbuf now
+ g_object_unref( pixbuf );
+ }
+
+ // Set width/height
+ mlt_properties_set_int( properties, "width", this->width );
+ mlt_properties_set_int( properties, "height", this->height );
+ mlt_properties_set_int( properties, "real_width", mlt_properties_get_int( producer_props, "real_width" ) );
+ mlt_properties_set_int( properties, "real_height", mlt_properties_get_int( producer_props, "real_height" ) );
+
+ // pass the image data without destructor
+ mlt_properties_set_data( properties, "image", this->image, this->width * ( this->height + 1 ) * 2, NULL, NULL );
+ mlt_properties_set_data( properties, "alpha", this->alpha, this->width * this->height, NULL, NULL );
+}
+
+static int producer_get_image( mlt_frame frame, uint8_t **buffer, mlt_image_format *format, int *width, int *height, int writable )
+{
+ // Obtain properties of frame
+ mlt_properties properties = mlt_frame_properties( frame );
+
+ *width = mlt_properties_get_int( properties, "rescale_width" );
+ *height = mlt_properties_get_int( properties, "rescale_height" );
+
+ // Refresh the image
+ refresh_image( frame, *width, *height );
+
+ // Determine format
+ //mlt_producer this = mlt_properties_get_data( properties, "producer_pango", NULL );
+ //*format = ( mlt_properties_get_int( mlt_producer_properties( this ), "bpp" ) == 4 ) ? mlt_image_rgb24a : mlt_image_rgb24;
// May need to know the size of the image to clone it
int size = 0;
if ( writable )
{
// Clone our image
- uint8_t *copy = malloc( size );
+ uint8_t *copy = mlt_pool_alloc( size );
memcpy( copy, image, size );
// We're going to pass the copy on
image = copy;
// Now update properties so we free the copy after
- mlt_properties_set_data( properties, "image", copy, size, free, NULL );
+ mlt_properties_set_data( properties, "image", copy, size, ( mlt_destructor )mlt_pool_release, NULL );
}
// Pass on the image
static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index )
{
producer_pango this = producer->child;
- GdkPixbuf *pixbuf = NULL;
// Generate a frame
*frame = mlt_frame_init( );
- // Obtain properties of frame
+ // Obtain properties of frame and producer
mlt_properties properties = mlt_frame_properties( *frame );
- // optimization for subsequent iterations on single picture
- if ( this->image != NULL )
- {
- // Set width/height
- mlt_properties_set_int( properties, "width", this->width );
- mlt_properties_set_int( properties, "height", this->height );
+ // Set the producer on the frame properties
+ mlt_properties_set_data( properties, "producer_pango", this, 0, NULL, NULL );
- // if picture sequence pass the image and alpha data without destructor
- mlt_properties_set_data( properties, "image", this->image, 0, NULL, NULL );
- mlt_properties_set_data( properties, "alpha", this->alpha, 0, NULL, NULL );
+ // Refresh the pango image
+ refresh_image( *frame, 0, 0 );
- // Set alpha mask call back
- ( *frame )->get_alpha_mask = producer_get_alpha_mask;
+ // Set producer-specific frame properties
+ mlt_properties_set_int( properties, "progressive", 1 );
+ mlt_properties_set_double( properties, "aspect_ratio", mlt_properties_get_double( properties, "real_width" ) / mlt_properties_get_double( properties, "real_height" ) );
- // Stack the get image callback
- mlt_frame_push_get_image( *frame, producer_get_image );
+ // Set alpha call back
+ ( *frame )->get_alpha_mask = producer_get_alpha_mask;
- }
- else
- {
- // Obtain properties of producer
- mlt_properties props = mlt_producer_properties( producer );
-
- // Get properties
- int fg = mlt_properties_get_int( props, "fgcolor" );
- int bg = mlt_properties_get_int( props, "bgcolor" );
- int align = mlt_properties_get_int( props, "align" );
- int pad = mlt_properties_get_int( props, "pad" );
- rgba_color fgcolor =
- {
- ( fg & 0xff000000 ) >> 24,
- ( fg & 0x00ff0000 ) >> 16,
- ( fg & 0x0000ff00 ) >> 8,
- ( fg & 0x000000ff )
- };
- rgba_color bgcolor =
- {
- ( bg & 0xff000000 ) >> 24,
- ( bg & 0x00ff0000 ) >> 16,
- ( bg & 0x0000ff00 ) >> 8,
- ( bg & 0x000000ff )
- };
-
- // Render the title
- pixbuf = pango_get_pixbuf( this->markup, fgcolor, bgcolor, pad, align );
- }
-
- // If we have a pixbuf
- if ( pixbuf )
- {
- // Scale to adjust for sample aspect ratio
- if ( mlt_properties_get_int( properties, "video_standard" ) == mlt_video_standard_pal )
- {
- GdkPixbuf *temp = pixbuf;
- GdkPixbuf *scaled = gdk_pixbuf_scale_simple( pixbuf,
- (gint) ( (float) gdk_pixbuf_get_width( pixbuf ) * 54.0/59.0),
- gdk_pixbuf_get_height( pixbuf ), GDK_INTERP_HYPER );
- pixbuf = scaled;
- g_object_unref( temp );
- }
- else
- {
- GdkPixbuf *temp = pixbuf;
- GdkPixbuf *scaled = gdk_pixbuf_scale_simple( pixbuf,
- (gint) ( (float) gdk_pixbuf_get_width( pixbuf ) * 11.0/10.0 ),
- gdk_pixbuf_get_height( pixbuf ), GDK_INTERP_HYPER );
- pixbuf = scaled;
- g_object_unref( temp );
- }
-
- // Store width and height
- this->width = gdk_pixbuf_get_width( pixbuf );
- this->height = gdk_pixbuf_get_height( pixbuf );
-
- // Allocate/define image and alpha
- uint8_t *image = malloc( this->width * this->height * 2 );
- uint8_t *alpha = NULL;
-
- // Extract YUV422 and alpha
- if ( gdk_pixbuf_get_has_alpha( pixbuf ) )
- {
- // Allocate the alpha mask
- alpha = malloc( this->width * this->height );
-
- // Convert the image
- mlt_convert_rgb24a_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
- this->width, this->height,
- gdk_pixbuf_get_rowstride( pixbuf ),
- image, alpha );
- }
- else
- {
- // No alpha to extract
- mlt_convert_rgb24_to_yuv422( gdk_pixbuf_get_pixels( pixbuf ),
- this->width, this->height,
- gdk_pixbuf_get_rowstride( pixbuf ),
- image );
- }
-
- // Finished with pixbuf now
- g_object_unref( pixbuf );
-
- // Set width/height of frame
- mlt_properties_set_int( properties, "width", this->width );
- mlt_properties_set_int( properties, "height", this->height );
-
- // if single picture, reference the image and alpha in the producer
- this->image = image;
- this->alpha = alpha;
-
- // pass the image and alpha data without destructor
- mlt_properties_set_data( properties, "image", image, 0, NULL, NULL );
- mlt_properties_set_data( properties, "alpha", alpha, 0, NULL, NULL );
-
- // Set alpha call back
- ( *frame )->get_alpha_mask = producer_get_alpha_mask;
-
- // Push the get_image method
- mlt_frame_push_get_image( *frame, producer_get_image );
- }
+ // Stack the get image callback
+ mlt_frame_push_get_image( *frame, producer_get_image );
// Update timecode on the frame we're creating
- mlt_frame_set_timecode( *frame, mlt_producer_position( producer ) );
+ mlt_frame_set_position( *frame, mlt_producer_position( producer ) );
// Calculate the next timecode
mlt_producer_prepare_next( producer );
static void producer_close( mlt_producer parent )
{
producer_pango this = parent->child;
- if ( this->markup )
- free( this->markup );
- if ( this->image )
- free( this->image );
- if ( this->alpha )
- free( this->alpha );
+ mlt_pool_release( this->image );
+ mlt_pool_release( this->alpha );
+ free( this->fgcolor );
+ free( this->bgcolor );
+ free( this->markup );
+ free( this->text );
+ free( this->font );
parent->close = NULL;
mlt_producer_close( parent );
free( this );
}
}
-static GdkPixbuf *pango_get_pixbuf( const char *markup, rgba_color fg, rgba_color bg, int pad, int align )
+static GdkPixbuf *pango_get_pixbuf( const char *markup, const char *text, const char *font, rgba_color fg, rgba_color bg, int pad, int align )
{
PangoFT2FontMap *fontmap = (PangoFT2FontMap*) pango_ft2_font_map_new();
PangoContext *context = pango_ft2_font_map_create_context( fontmap );
PangoLayout *layout = pango_layout_new( context );
-// PangoFontDescription *font;
int w, h, x;
int i, j;
GdkPixbuf *pixbuf = NULL;
pango_ft2_font_map_set_resolution( fontmap, 72, 72 );
pango_layout_set_width( layout, -1 ); // set wrapping constraints
-// pango_layout_set_font_description( layout, "Sans 48" );
+ pango_layout_set_font_description( layout, pango_font_description_from_string( font ) );
// pango_layout_set_spacing( layout, space );
pango_layout_set_alignment( layout, ( PangoAlignment ) align );
- pango_layout_set_markup( layout, markup, (markup == NULL ? 0 : strlen( markup ) ) );
+ if ( markup != NULL && strcmp( markup, "" ) != 0 )
+ pango_layout_set_markup( layout, markup, strlen( markup ) );
+ else if ( text != NULL && strcmp( text, "" ) != 0 )
+ pango_layout_set_text( layout, text, strlen( text ) );
+ else
+ return NULL;
pango_layout_get_pixel_size( layout, &w, &h );
pixbuf = gdk_pixbuf_new( GDK_COLORSPACE_RGB, TRUE /* has alpha */, 8, w + 2 * pad, h + 2 * pad );
bitmap.width = w;
bitmap.pitch = 32 * ( ( w + 31 ) / 31 );
bitmap.rows = h;
- bitmap.buffer = ( unsigned char * ) calloc( 1, h * bitmap.pitch );
+ bitmap.buffer = mlt_pool_alloc( h * bitmap.pitch );
bitmap.num_grays = 256;
bitmap.pixel_mode = ft_pixel_mode_grays;
+ memset( bitmap.buffer, 0, h * bitmap.pitch );
+
pango_ft2_render_layout( &bitmap, layout, 0, 0 );
src = bitmap.buffer;
}
dest += stride;
}
- free( bitmap.buffer );
-
+ mlt_pool_release( bitmap.buffer );
g_object_unref( layout );
g_object_unref( context );
g_object_unref( fontmap );
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