X-Git-Url: http://research.m1stereo.tv/gitweb?a=blobdiff_plain;f=src%2Fmodules%2Fgtk2%2Fproducer_pango.c;h=3398e79a285cce6f19fca18d76e6ad10310881ba;hb=f4963a6aa07644399b273b5d2b1f9299c9047414;hp=85b7b396463d70bef934a09f13df827de93f499a;hpb=9d64164b417c1d76e6fe06bbaddfa787ec0e8ee9;p=melted diff --git a/src/modules/gtk2/producer_pango.c b/src/modules/gtk2/producer_pango.c index 85b7b39..3398e79 100644 --- a/src/modules/gtk2/producer_pango.c +++ b/src/modules/gtk2/producer_pango.c @@ -3,28 +3,60 @@ * Copyright (C) 2003-2004 Ushodaya Enterprises Limited * Author: Dan Dennedy * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. * - * This program is distributed in the hope that it will be useful, + * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software Foundation, - * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ -#include "producer_pango.h" +#include #include +#include #include #include #include #include #include +#include +#include +#include + +typedef struct producer_pango_s *producer_pango; + +typedef enum +{ + pango_align_left = 0, + pango_align_center, + pango_align_right +} pango_align; + +static pthread_mutex_t pango_mutex = PTHREAD_MUTEX_INITIALIZER; + +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; + int weight; +}; // special color type used by internal pango routines typedef struct @@ -36,21 +68,149 @@ 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, int weight, int size ); -mlt_producer producer_pango_init( const char *markup ) +/** Return nonzero if the two strings are equal, ignoring case, up to + the first n characters. +*/ +int strncaseeq(const char *s1, const char *s2, size_t n) +{ + for ( ; n > 0; n--) + { + if (tolower(*s1++) != tolower(*s2++)) + return 0; + } + return 1; +} + +/** 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; +} + +static PangoFT2FontMap *fontmap = NULL; + +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 ) { mlt_producer producer = &this->parent; - producer->get_frame = producer_get_frame; - producer->close = producer_close; - - this->markup = strdup( markup ); - this->is_pal = 1; + pthread_mutex_lock( &pango_mutex ); + if ( fontmap == NULL ) + fontmap = (PangoFT2FontMap*) pango_ft2_font_map_new(); g_type_init(); + pthread_mutex_unlock( &pango_mutex ); + + producer->get_frame = producer_get_frame; + producer->close = ( mlt_destructor )producer_close; + + // Get the properties interface + mlt_properties properties = MLT_PRODUCER_PROPERTIES( &this->parent ); + + // Set the default properties + 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" ); + mlt_properties_set( properties, "encoding", "UTF-8" ); + mlt_properties_set_int( properties, "weight", PANGO_WEIGHT_NORMAL ); + + 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", filename ); + mlt_properties_set( properties, "markup", markup ); + free( copy ); + } + else if ( strstr( filename, ".mpl" ) ) + { + int i = 0; + mlt_properties contents = mlt_properties_load( filename ); + mlt_geometry key_frames = mlt_geometry_init( ); + struct mlt_geometry_item_s item; + mlt_properties_set( properties, "resource", filename ); + mlt_properties_set_data( properties, "contents", contents, 0, ( mlt_destructor )mlt_properties_close, NULL ); + mlt_properties_set_data( properties, "key_frames", key_frames, 0, ( mlt_destructor )mlt_geometry_close, NULL ); + + // Make sure we have at least one entry + if ( mlt_properties_get( contents, "0" ) == NULL ) + mlt_properties_set( contents, "0", "" ); + + for ( i = 0; i < mlt_properties_count( contents ); i ++ ) + { + char *name = mlt_properties_get_name( contents, i ); + char *value = mlt_properties_get_value( contents, i ); + while ( value != NULL && strchr( value, '~' ) ) + ( *strchr( value, '~' ) ) = '\n'; + item.frame = atoi( name ); + mlt_geometry_insert( key_frames, &item ); + } + } + 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", filename ); + mlt_properties_set( properties, "markup", ( markup == NULL ? "" : markup ) ); + free( markup ); + } + else + { + mlt_properties_set( properties, "markup", "" ); + } + } return producer; } @@ -58,167 +218,367 @@ mlt_producer producer_pango_init( const char *markup ) 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, const char *value, const char *fallback ) { - // Obtain properties of frame - mlt_properties properties = mlt_frame_properties( this ); - - // May need to know the size of the image to clone it - int size = 0; - - // Get the image - uint8_t *image = mlt_properties_get_data( properties, "image", &size ); - - // Get width and height - *width = mlt_properties_get_int( properties, "width" ); - *height = mlt_properties_get_int( properties, "height" ); - - // Clone if necessary - if ( writable ) + if ( value != NULL ) + { + free( *string ); + *string = strdup( value ); + } + else if ( *string == NULL && fallback != NULL ) + { + *string = strdup( fallback ); + } + else if ( *string != NULL && fallback == NULL ) { - // Clone our image - uint8_t *copy = malloc( size ); - memcpy( copy, image, size ); + free( *string ); + *string = NULL; + } +} - // We're going to pass the copy on - image = copy; +rgba_color parse_color( char *color ) +{ + rgba_color result = { 0xff, 0xff, 0xff, 0xff }; - // Now update properties so we free the copy after - mlt_properties_set_data( properties, "image", copy, size, free, NULL ); + 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; } - // Pass on the image - *buffer = image; - - return 0; + return result; } -static uint8_t *producer_get_alpha_mask( mlt_frame this ) +/** Convert a string property to UTF-8 +*/ +static int iconv_utf8( mlt_properties properties, const char *prop_name, const char* encoding ) { - // Obtain properties of frame - mlt_properties properties = mlt_frame_properties( this ); + char *text = mlt_properties_get( properties, prop_name ); + int result = -1; + + iconv_t cd = iconv_open( "UTF-8", encoding ); + if ( cd != ( iconv_t )-1 ) + { + char *inbuf_p = text; + size_t inbuf_n = strlen( text ); + size_t outbuf_n = inbuf_n * 6; + char *outbuf = mlt_pool_alloc( outbuf_n ); + char *outbuf_p = outbuf; + + memset( outbuf, 0, outbuf_n ); - // Return the alpha mask - return mlt_properties_get_data( properties, "alpha", NULL ); + if ( text != NULL && strcmp( text, "" ) && iconv( cd, &inbuf_p, &inbuf_n, &outbuf_p, &outbuf_n ) != -1 ) + mlt_properties_set( properties, prop_name, outbuf ); + else + mlt_properties_set( properties, prop_name, "" ); + + mlt_pool_release( outbuf ); + iconv_close( cd ); + result = 0; + } + return result; } -static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index ) +static void refresh_image( mlt_frame frame, int width, int height ) { - producer_pango this = producer->child; - GdkPixbuf *pixbuf = NULL; - - // Generate a frame - *frame = mlt_frame_init( ); + // Pixbuf + GdkPixbuf *pixbuf = mlt_properties_get_data( MLT_FRAME_PROPERTIES( frame ), "pixbuf", NULL ); // Obtain properties of frame - mlt_properties properties = mlt_frame_properties( *frame ); + 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" ); + char *encoding = mlt_properties_get( producer_props, "encoding" ); + int weight = mlt_properties_get_int( producer_props, "weight" ); + int size = mlt_properties_get_int( producer_props, "size" ); + int property_changed = 0; + + if ( pixbuf == NULL ) + { + // Check for file support + int position = mlt_properties_get_position( properties, "pango_position" ); + mlt_properties contents = mlt_properties_get_data( producer_props, "contents", NULL ); + mlt_geometry key_frames = mlt_properties_get_data( producer_props, "key_frames", NULL ); + struct mlt_geometry_item_s item; + if ( contents != NULL ) + { + char temp[ 20 ]; + mlt_geometry_prev_key( key_frames, &item, position ); + sprintf( temp, "%d", item.frame ); + markup = mlt_properties_get( contents, temp ); + } + + // See if any properties changed + 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 ) ); + property_changed = property_changed || ( weight != this->weight ); + + // 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" ); + this->weight = weight; + } - // optimization for subsequent iterations on single picture - if ( this->image != NULL ) + if ( pixbuf == NULL && property_changed ) { - // Set width/height - mlt_properties_set_int( properties, "width", this->width ); - mlt_properties_set_int( properties, "height", this->height ); + 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; - // 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 ); + // Convert from specified encoding to UTF-8 + if ( encoding != NULL && !strncaseeq( encoding, "utf-8", 5 ) && !strncaseeq( encoding, "utf8", 4 ) ) + { + if ( markup != NULL && iconv_utf8( producer_props, "markup", encoding ) != -1 ) + { + markup = mlt_properties_get( producer_props, "markup" ); + set_string( &this->markup, markup, NULL ); + } + if ( text != NULL && iconv_utf8( producer_props, "text", encoding ) != -1 ) + { + text = mlt_properties_get( producer_props, "text" ); + set_string( &this->text, text, NULL ); + } + } + + // Render the title + pixbuf = pango_get_pixbuf( markup, text, font, fgcolor, bgcolor, pad, align, weight, size ); - // Set alpha mask call back - ( *frame )->get_alpha_mask = producer_get_alpha_mask; + 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 ); + g_object_ref( pixbuf ); + mlt_properties_set_data( MLT_FRAME_PROPERTIES( frame ), "pixbuf", pixbuf, 0, ( mlt_destructor )g_object_unref, NULL ); - // Stack the get image callback - mlt_frame_push_get_image( *frame, producer_get_image ); + 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 + else if ( pixbuf == NULL && ( width > 0 && ( this->image == NULL || width != this->width || height != this->height ) ) ) { - // the following four will be replaced by properties - rgba_color fg = { 0xff, 0xff, 0xff, 0xff }; - rgba_color bg = { 0, 0, 0, 0x7f }; - int pad = 8; - int align = 0; /* left */ - - // Render the title - pixbuf = pango_get_pixbuf( this->markup, fg, bg, pad, align ); + 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 - if ( pixbuf ) + // If we have a pixbuf and a valid width + if ( pixbuf && width > 0 ) { - // Scale to adjust for sample aspect ratio - if ( this->is_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 ); - } + 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,"%s: scaling from %dx%d to %dx%d\n", __FILE__, this->width, this->height, width, 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 = gdk_pixbuf_get_width( pixbuf ); - this->height = gdk_pixbuf_get_height( pixbuf ); + this->width = width; + this->height = height; - // Allocate/define image and alpha - uint8_t *image = malloc( this->width * this->height * 2 ); - uint8_t *alpha = NULL; + // Allocate/define image + this->image = mlt_pool_alloc( width * ( height + 1 ) * 2 ); + this->alpha = mlt_pool_alloc( this->width * this->height ); - // 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 ); - } + // 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 of frame - mlt_properties_set_int( properties, "width", this->width ); - mlt_properties_set_int( properties, "height", this->height ); + // 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" ) ); - // if single picture, reference the image and alpha in the producer - this->image = image; - this->alpha = alpha; + // 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 ); + + // We need to know the size of the image to clone it + int image_size = 0; + int alpha_size = 0; + + // Alpha channel + uint8_t *alpha = NULL; + + *width = mlt_properties_get_int( properties, "rescale_width" ); + *height = mlt_properties_get_int( properties, "rescale_height" ); + + // Refresh the image + pthread_mutex_lock( &pango_mutex ); + refresh_image( frame, *width, *height ); + + // Get the image + *buffer = mlt_properties_get_data( properties, "image", &image_size ); + alpha = mlt_properties_get_data( properties, "alpha", &alpha_size ); - // 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 ); + // Get width and height + *width = mlt_properties_get_int( properties, "width" ); + *height = mlt_properties_get_int( properties, "height" ); + + // Always clone here to allow 'animated' text + if ( *buffer != NULL ) + { + // Clone the image and the alpha + uint8_t *image_copy = mlt_pool_alloc( image_size ); + uint8_t *alpha_copy = mlt_pool_alloc( alpha_size ); - // Set alpha call back - ( *frame )->get_alpha_mask = producer_get_alpha_mask; + memcpy( image_copy, *buffer, image_size ); - // Push the get_image method - mlt_frame_push_get_image( *frame, producer_get_image ); + // Copy or default the alpha + if ( alpha != NULL ) + memcpy( alpha_copy, alpha, alpha_size ); + else + memset( alpha_copy, 255, alpha_size ); + + // Now update properties so we free the copy after + mlt_properties_set_data( properties, "image", image_copy, image_size, mlt_pool_release, NULL ); + mlt_properties_set_data( properties, "alpha", alpha_copy, alpha_size, mlt_pool_release, NULL ); + + // We're going to pass the copy on + *buffer = image_copy; } + else + { + // TODO: Review all cases of invalid images + *buffer = mlt_pool_alloc( 50 * 50 * 2 ); + mlt_properties_set_data( properties, "image", *buffer, image_size, mlt_pool_release, NULL ); + *width = 50; + *height = 50; + } + + pthread_mutex_unlock( &pango_mutex ); + + return 0; +} + +static uint8_t *producer_get_alpha_mask( mlt_frame this ) +{ + // Obtain properties of frame + mlt_properties properties = MLT_FRAME_PROPERTIES( this ); + + // Return the alpha mask + return mlt_properties_get_data( properties, "alpha", NULL ); +} + +static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int index ) +{ + producer_pango this = producer->child; + + // Generate a frame + *frame = mlt_frame_init( MLT_PRODUCER_SERVICE( producer ) ); + + // Obtain properties of frame and producer + mlt_properties properties = MLT_FRAME_PROPERTIES( *frame ); + + // Set the producer on the frame properties + mlt_properties_set_data( properties, "producer_pango", this, 0, NULL, NULL ); // 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 ) ); + mlt_properties_set_position( properties, "pango_position", mlt_producer_frame( producer ) ); + + // Refresh the pango image + pthread_mutex_lock( &pango_mutex ); + refresh_image( *frame, 0, 0 ); + pthread_mutex_unlock( &pango_mutex ); + + // Set producer-specific frame properties + mlt_properties_set_int( properties, "progressive", 1 ); + mlt_properties_set_double( properties, "aspect_ratio", 1 ); + + // Set alpha call back + ( *frame )->get_alpha_mask = producer_get_alpha_mask; + + // Stack the get image callback + mlt_frame_push_get_image( *frame, producer_get_image ); // Calculate the next timecode mlt_producer_prepare_next( producer ); @@ -229,12 +589,13 @@ static int producer_get_frame( mlt_producer producer, mlt_frame_ptr frame, int i 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 ); @@ -259,28 +620,61 @@ 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, int weight, int size ) { - 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; FT_Bitmap bitmap; uint8_t *src = NULL; uint8_t* dest = NULL; + uint8_t *d, *s, a; int stride; + PangoFontDescription *desc = pango_font_description_from_string( font ); 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_font_description_set_weight( desc, ( PangoWeight ) weight ); + if ( size != 0 ) + pango_font_description_set_absolute_size( desc, PANGO_SCALE * size ); + pango_layout_set_font_description( layout, desc ); // 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 ) + { + // Replace all ~'s with a line feed (silly convention, but handy) + char *copy = strdup( text ); + while ( strchr( copy, '~' ) ) + ( *strchr( copy, '~' ) ) = '\n'; + pango_layout_set_text( layout, copy, strlen( copy ) ); + free( copy ); + } + else + { + // Pango doesn't like empty strings + pango_layout_set_text( layout, " ", 2 ); + } pango_layout_get_pixel_size( layout, &w, &h ); + // Interpret size property as an absolute pixel height and compensate for + // freetype's "interpretation" of our absolute size request. This gives + // precise control over compositing and better quality by reducing scaling + // artifacts with composite geometries that constrain the dimensions. + // If you do not want this, then put the size in the font property or in + // the pango markup. + if ( size != 0 ) + { + pango_font_description_set_absolute_size( desc, PANGO_SCALE * size * size/h ); + pango_layout_set_font_description( layout, desc ); + 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 ); pango_draw_background( pixbuf, bg ); @@ -289,34 +683,39 @@ static GdkPixbuf *pango_get_pixbuf( const char *markup, rgba_color fg, rgba_colo 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; x = ( gdk_pixbuf_get_width( pixbuf ) - w - 2 * pad ) * align / 2 + pad; dest = gdk_pixbuf_get_pixels( pixbuf ) + 4 * x + pad * stride; - for ( j = 0; j < h; j++ ) + j = h; + + while( j -- ) { - uint8_t *d = dest; - for ( i = 0; i < w; i++ ) + d = dest; + s = src; + i = w; + while( i -- ) { - float a = ( float ) bitmap.buffer[ j * bitmap.pitch + i ] / 255.0; - *d++ = ( int ) ( a * fg.r + ( 1 - a ) * bg.r ); - *d++ = ( int ) ( a * fg.g + ( 1 - a ) * bg.g ); - *d++ = ( int ) ( a * fg.b + ( 1 - a ) * bg.b ); - *d++ = ( int ) ( a * fg.a + ( 1 - a ) * bg.a ); + a = *s ++; + *d++ = ( a * fg.r + ( 255 - a ) * bg.r ) >> 8; + *d++ = ( a * fg.g + ( 255 - a ) * bg.g ) >> 8; + *d++ = ( a * fg.b + ( 255 - a ) * bg.b ) >> 8; + *d++ = ( a * fg.a + ( 255 - a ) * bg.a ) >> 8; } dest += stride; + src += bitmap.pitch; } - free( bitmap.buffer ); - + mlt_pool_release( bitmap.buffer ); + pango_font_description_free( desc ); g_object_unref( layout ); g_object_unref( context ); - g_object_unref( fontmap ); return pixbuf; } -