X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=modules%2Fmisc%2Fsvg.c;h=7c5ad64b8912b575280e0413673cea83d72c4e09;hb=1834c5a73ecf97c33e385c5f837af72a48a8672d;hp=81145858846c9fc70d159e7c6ab0cc96e7af8e5e;hpb=959bd283ae476f82830aa777cd0f6b567f15c94f;p=vlc diff --git a/modules/misc/svg.c b/modules/misc/svg.c index 8114585884..7c5ad64b89 100644 --- a/modules/misc/svg.c +++ b/modules/misc/svg.c @@ -1,8 +1,8 @@ /***************************************************************************** * svg.c : Put SVG on the video ***************************************************************************** - * Copyright (C) 2002, 2003 VideoLAN - * $Id: svg.c,v 1.2 2003/07/23 17:26:56 oaubert Exp $ + * Copyright (C) 2002, 2003 the VideoLAN team + * $Id$ * * Authors: Olivier Aubert * @@ -18,68 +18,87 @@ * * 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, USA. + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA. *****************************************************************************/ /***************************************************************************** * Preamble *****************************************************************************/ -#include /* malloc( ), free( ) */ -#include + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include +#include +#include +#include +#include +#include +#include #include -#include -#include -#include -#include -#include "osd.h" -#include "vlc_block.h" -#include "vlc_filter.h" +#ifdef HAVE_UNISTD_H +# include +#elif defined( WIN32 ) && !defined( UNDER_CE ) +# include +#endif +#include +#include +#include /* g_object_unref( ) */ #include +typedef struct svg_rendition_t svg_rendition_t; + /***************************************************************************** * Local prototypes *****************************************************************************/ static int Create ( vlc_object_t * ); static void Destroy ( vlc_object_t * ); -static subpicture_t *RenderText( filter_t *, block_t * ); +static int RenderText( filter_t *p_filter, subpicture_region_t *p_region_out, + subpicture_region_t *p_region_in ); +static char *svg_GetTemplate( vlc_object_t *p_this ); /***************************************************************************** * Module descriptor *****************************************************************************/ #define TEMPLATE_TEXT N_( "SVG template file" ) -#define TEMPLATE_LONGTEXT N_( "Location of a file holding a SVG template for automatic string conversion" ) - -vlc_module_begin(); - set_capability( "text renderer", 101 ); - add_shortcut( "svg" ); - add_string( "svg-template-file", "", NULL, TEMPLATE_TEXT, TEMPLATE_LONGTEXT, VLC_TRUE ); - set_callbacks( Create, Destroy ); -vlc_module_end(); +#define TEMPLATE_LONGTEXT N_( "Location of a file holding a SVG template "\ + "for automatic string conversion" ) + +vlc_module_begin () + set_category( CAT_INPUT ) + set_category( SUBCAT_INPUT_SCODEC ) + set_capability( "text renderer", 99 ) + add_shortcut( "svg" ) + add_string( "svg-template-file", "", NULL, TEMPLATE_TEXT, TEMPLATE_LONGTEXT, true ) + set_callbacks( Create, Destroy ) +vlc_module_end () /** Describes a SVG string to be displayed on the video */ -typedef struct subpicture_data_t +struct svg_rendition_t { int i_width; int i_height; int i_chroma; /** The SVG source associated with this subpicture */ - byte_t *psz_text; + char *psz_text; /* The rendered SVG, as a GdkPixbuf */ GdkPixbuf *p_rendition; -} subpicture_data_t; +}; -static void Render ( filter_t *, subpicture_t *, subpicture_data_t * ); -static byte_t *svg_GetTemplate (); -static void svg_SizeCallback (int *width, int *height, gpointer data ); -static void svg_RenderPicture (filter_t *p_filter, - subpicture_data_t *p_string ); -static void FreeString( subpicture_data_t * ); +static int Render( filter_t *, subpicture_region_t *, svg_rendition_t *, int, int); +static char *svg_GetTemplate (); +static void svg_set_size( filter_t *p_filter, int width, int height ); +static void svg_SizeCallback ( int *width, int *height, gpointer data ); +static void svg_RenderPicture ( filter_t *p_filter, + svg_rendition_t *p_svg ); +static void FreeString( svg_rendition_t * ); /***************************************************************************** * filter_sys_t: svg local data @@ -90,11 +109,10 @@ static void FreeString( subpicture_data_t * ); struct filter_sys_t { /* The SVG template used to convert strings */ - byte_t *psz_template; + char *psz_template; /* Default size for rendering. Initialized to the output size. */ int i_width; int i_height; - vlc_mutex_t *lock; }; /***************************************************************************** @@ -104,46 +122,44 @@ struct filter_sys_t *****************************************************************************/ static int Create( vlc_object_t *p_this ) { - filter_t *p_filter = (filter_t *)p_this; + filter_t *p_filter = ( filter_t * )p_this; filter_sys_t *p_sys; /* Allocate structure */ p_sys = malloc( sizeof( filter_sys_t ) ); if( !p_sys ) - { - msg_Err( p_filter, "Out of memory" ); return VLC_ENOMEM; - } /* Initialize psz_template */ p_sys->psz_template = svg_GetTemplate( p_this ); if( !p_sys->psz_template ) { - msg_Err( p_filter, "Out of memory" ); + free( p_sys ); return VLC_ENOMEM; } p_sys->i_width = p_filter->fmt_out.video.i_width; p_sys->i_height = p_filter->fmt_out.video.i_height; - p_filter->pf_render_string = RenderText; + p_filter->pf_render_text = RenderText; + p_filter->pf_render_html = NULL; p_filter->p_sys = p_sys; /* MUST call this before any RSVG funcs */ - g_type_init (); + rsvg_init( ); return VLC_SUCCESS; } -static byte_t *svg_GetTemplate( vlc_object_t *p_this ) +static char *svg_GetTemplate( vlc_object_t *p_this ) { - filter_t *p_filter = (filter_t *)p_this; + filter_t *p_filter = ( filter_t * )p_this; char *psz_filename; char *psz_template; FILE *file; - psz_filename = config_GetPsz( p_filter, "svg-template-file" ); - if( !psz_filename || psz_filename[0] == 0 ) + psz_filename = var_InheritString( p_filter, "svg-template-file" ); + if( !psz_filename || (psz_filename[0] == 0) ) { /* No filename. Use a default value. */ psz_template = NULL; @@ -151,40 +167,50 @@ static byte_t *svg_GetTemplate( vlc_object_t *p_this ) else { /* Read the template */ - file = fopen( psz_filename, "rt" ); + file = vlc_fopen( psz_filename, "rt" ); if( !file ) { - msg_Warn( p_this, "SVG template file %s does not exist.", psz_filename ); + msg_Warn( p_this, "SVG template file %s does not exist.", + psz_filename ); psz_template = NULL; } else { struct stat s; - int i_ret; - i_ret = lstat( psz_filename, &s ); - if( i_ret ) + if( fstat( fileno( file ), &s ) ) { /* Problem accessing file information. Should not happen as we could open it. */ psz_template = NULL; } else + if( ((signed)s.st_size) < 0 ) { - msg_Dbg( p_this, "Reading %ld bytes from template %s\n", (long)s.st_size, psz_filename ); + msg_Err( p_this, "SVG template too big" ); + psz_template = NULL; + } + else + { + msg_Dbg( p_this, "reading %ld bytes from template %s", + (unsigned long)s.st_size, psz_filename ); - psz_template = malloc( s.st_size + 42 ); + psz_template = calloc( 1, s.st_size + 42 ); if( !psz_template ) { - msg_Err( p_filter, "Out of memory" ); + fclose( file ); + free( psz_filename ); return NULL; } - memset( psz_template, 0, s.st_size + 1 ); - fread( psz_template, s.st_size, 1, file ); - fclose( file ); + if(! fread( psz_template, s.st_size, 1, file ) ) + { + msg_Dbg( p_this, "No data read from template." ); + } } + fclose( file ); } } + free( psz_filename ); if( !psz_template ) { /* Either there was no file, or there was an error. @@ -205,20 +231,20 @@ static byte_t *svg_GetTemplate( vlc_object_t *p_this ) *****************************************************************************/ static void Destroy( vlc_object_t *p_this ) { - filter_t *p_filter = (filter_t *)p_this; + filter_t *p_filter = ( filter_t * )p_this; filter_sys_t *p_sys = p_filter->p_sys; free( p_sys->psz_template ); free( p_sys ); + rsvg_term( ); } /***************************************************************************** * Render: render SVG in picture *****************************************************************************/ -static void Render( filter_t *p_filter, subpicture_t *p_spu, - subpicture_data_t *p_string ) +static int Render( filter_t *p_filter, subpicture_region_t *p_region, + svg_rendition_t *p_svg, int i_width, int i_height ) { - int i_width, i_height; video_format_t fmt; uint8_t *p_y, *p_u, *p_v, *p_a; int x, y, i_pitch, i_u_pitch; @@ -228,41 +254,53 @@ static void Render( filter_t *p_filter, subpicture_t *p_spu, int alpha; picture_t *p_pic; - if( p_string->p_rendition == NULL ) { - svg_RenderPicture( p_filter, p_string ); + if ( p_filter->p_sys->i_width != i_width || + p_filter->p_sys->i_height != i_height ) + { + svg_set_size( p_filter, i_width, i_height ); + p_svg->p_rendition = NULL; + } + + if( p_svg->p_rendition == NULL ) { + svg_RenderPicture( p_filter, p_svg ); + if( ! p_svg->p_rendition ) + { + msg_Err( p_filter, "Cannot render SVG" ); + return VLC_EGENERIC; + } } - i_width = gdk_pixbuf_get_width( p_string->p_rendition ); - i_height = gdk_pixbuf_get_height( p_string->p_rendition ); + i_width = gdk_pixbuf_get_width( p_svg->p_rendition ); + i_height = gdk_pixbuf_get_height( p_svg->p_rendition ); /* Create a new subpicture region */ - memset( &fmt, 0, sizeof(video_format_t) ); - fmt.i_chroma = VLC_FOURCC('Y','U','V','A'); - fmt.i_aspect = VOUT_ASPECT_FACTOR; + memset( &fmt, 0, sizeof( video_format_t ) ); + fmt.i_chroma = VLC_CODEC_YUVA; fmt.i_width = fmt.i_visible_width = i_width; fmt.i_height = fmt.i_visible_height = i_height; fmt.i_x_offset = fmt.i_y_offset = 0; - p_spu->p_region = p_spu->pf_create_region( VLC_OBJECT(p_filter), &fmt ); - if( !p_spu->p_region ) - { - msg_Err( p_filter, "cannot allocate SPU region" ); - return; - } + fmt.i_sar_num = 1; + fmt.i_sar_den = 1; + + p_region->p_picture = picture_NewFromFormat( &fmt ); + if( !p_region->p_picture ) + return VLC_EGENERIC; + p_region->fmt = fmt; - p_spu->p_region->i_x = p_spu->p_region->i_y = 0; - p_y = p_spu->p_region->picture.Y_PIXELS; - p_u = p_spu->p_region->picture.U_PIXELS; - p_v = p_spu->p_region->picture.V_PIXELS; - p_a = p_spu->p_region->picture.A_PIXELS; + p_region->i_x = p_region->i_y = 0; + p_y = p_region->p_picture->Y_PIXELS; + p_u = p_region->p_picture->U_PIXELS; + p_v = p_region->p_picture->V_PIXELS; + p_a = p_region->p_picture->A_PIXELS; - i_pitch = p_spu->p_region->picture.Y_PITCH; - i_u_pitch = p_spu->p_region->picture.U_PITCH; + i_pitch = p_region->p_picture->Y_PITCH; + i_u_pitch = p_region->p_picture->U_PITCH; /* Initialize the region pixels (only the alpha will be changed later) */ - memset( p_y, 0x00, i_pitch * p_spu->p_region->fmt.i_height ); - memset( p_u, 0x80, i_u_pitch * p_spu->p_region->fmt.i_height ); - memset( p_v, 0x80, i_u_pitch * p_spu->p_region->fmt.i_height ); + memset( p_y, 0x00, i_pitch * p_region->fmt.i_height ); + memset( p_u, 0x80, i_u_pitch * p_region->fmt.i_height ); + memset( p_v, 0x80, i_u_pitch * p_region->fmt.i_height ); - p_pic = &(p_spu->p_region->picture); + p_pic = p_region->p_picture; /* Copy the data */ @@ -284,38 +322,36 @@ static void Render( filter_t *p_filter, subpicture_t *p_spu, blue = pixels [ n_channels * ( y*rowstride ) + x ) + 2 ]; */ - pixels_in = gdk_pixbuf_get_pixels( p_string->p_rendition ); - rowstride_in = gdk_pixbuf_get_rowstride( p_string->p_rendition ); - channels_in = gdk_pixbuf_get_n_channels( p_string->p_rendition ); - alpha = gdk_pixbuf_get_has_alpha( p_string->p_rendition ); + pixels_in = gdk_pixbuf_get_pixels( p_svg->p_rendition ); + rowstride_in = gdk_pixbuf_get_rowstride( p_svg->p_rendition ); + channels_in = gdk_pixbuf_get_n_channels( p_svg->p_rendition ); + alpha = gdk_pixbuf_get_has_alpha( p_svg->p_rendition ); /* This crashes the plugin (if !alpha). As there is always an alpha value, it does not matter for the moment : if( !alpha ) - memset( p_a, 0xFF, i_pitch * p_spu->p_region->fmt.i_height ); + memset( p_a, 0xFF, i_pitch * p_region->fmt.i_height ); */ - + #define INDEX_IN( x, y ) ( y * rowstride_in + x * channels_in ) #define INDEX_OUT( x, y ) ( y * i_pitch + x * p_pic->p[Y_PLANE].i_pixel_pitch ) -#define UV_INDEX_OUT( x, y ) ( ( y >> 1 ) * i_u_pitch + ( x >> 1) * p_pic->p[U_PLANE].i_pixel_pitch ) - + for( y = 0; y < i_height; y++ ) { for( x = 0; x < i_width; x++ ) { guchar *p_in; int i_out; - int i_uv_out; - + p_in = &pixels_in[INDEX_IN( x, y )]; - + #define R( pixel ) *pixel #define G( pixel ) *( pixel+1 ) #define B( pixel ) *( pixel+2 ) #define ALPHA( pixel ) *( pixel+3 ) - + /* From http://www.geocrawler.com/archives/3/8263/2001/6/0/6020594/ : Y = 0.29900 * R + 0.58700 * G + 0.11400 * B U = -0.1687 * r - 0.3313 * g + 0.5 * b + 128 @@ -323,142 +359,144 @@ static void Render( filter_t *p_filter, subpicture_t *p_spu, */ if ( alpha ) { i_out = INDEX_OUT( x, y ); - + p_pic->Y_PIXELS[i_out] = .299 * R( p_in ) + .587 * G( p_in ) + .114 * B( p_in ); - - p_pic->A_PIXELS[i_out] = ALPHA( p_in ); - - if( ( x % 2 == 0 ) && ( y % 2 == 0 ) ) { - i_uv_out = UV_INDEX_OUT( x, y ); + p_pic->U_PIXELS[i_out] = -.1687 * R( p_in ) - .3313 * G( p_in ) + .5 * B( p_in ) + 128; + p_pic->V_PIXELS[i_out] = .5 * R( p_in ) - .4187 * G( p_in ) - .0813 * B( p_in ) + 128; - - p_pic->U_PIXELS[i_uv_out] = -.1687 * R( p_in ) - .3313 * G( p_in ) + .5 * B( p_in ) + 128; - p_pic->V_PIXELS[i_uv_out] = .5 * R( p_in ) - .4187 * G( p_in ) - .0813 * B( p_in ) + 128; - } + p_pic->A_PIXELS[i_out] = ALPHA( p_in ); } } } + + return VLC_SUCCESS; +} + +static void svg_set_size( filter_t *p_filter, int width, int height ) +{ + p_filter->p_sys->i_width = width; + p_filter->p_sys->i_height = height; } static void svg_SizeCallback( int *width, int *height, gpointer data ) { - subpicture_data_t *p_string = data; + filter_t *p_filter = data; - *width = p_string->i_width; - *height = p_string->i_height; + *width = p_filter->p_sys->i_width; + *height = p_filter->p_sys->i_height; return; } static void svg_RenderPicture( filter_t *p_filter, - subpicture_data_t *p_string ) + svg_rendition_t *p_svg ) { /* Render the SVG string p_string->psz_text into a new picture_t p_string->p_rendition with dimensions ( ->i_width, ->i_height ) */ RsvgHandle *p_handle; GError *error = NULL; + p_svg->p_rendition = NULL; + p_handle = rsvg_handle_new(); - rsvg_handle_set_size_callback( p_handle, svg_SizeCallback, p_string, NULL ); + if( !p_handle ) + { + msg_Err( p_filter, "Error creating SVG reader" ); + return; + } + + rsvg_handle_set_size_callback( p_handle, svg_SizeCallback, p_filter, NULL ); + + if( ! rsvg_handle_write( p_handle, + ( guchar* )p_svg->psz_text, strlen( p_svg->psz_text ), + &error ) ) + { + msg_Err( p_filter, "error while rendering SVG: %s", error->message ); + g_object_unref( G_OBJECT( p_handle ) ); + return; + } - rsvg_handle_write( p_handle, - p_string->psz_text, strlen( p_string->psz_text ) + 1, - &error ); - if( error != NULL ) + if( ! rsvg_handle_close( p_handle, &error ) ) { - msg_Err( p_filter, "Error in handle_write: %s\n", error->message ); + msg_Err( p_filter, "error while rendering SVG (close): %s", error->message ); + g_object_unref( G_OBJECT( p_handle ) ); return; } - rsvg_handle_close( p_handle, &error ); - p_string->p_rendition = rsvg_handle_get_pixbuf( p_handle ); - rsvg_handle_free( p_handle ); + p_svg->p_rendition = rsvg_handle_get_pixbuf( p_handle ); + + g_object_unref( G_OBJECT( p_handle ) ); } -static subpicture_t *RenderText( filter_t *p_filter, block_t *p_block ) +static int RenderText( filter_t *p_filter, subpicture_region_t *p_region_out, + subpicture_region_t *p_region_in ) { filter_sys_t *p_sys = p_filter->p_sys; - subpicture_t *p_subpic = NULL; - subpicture_data_t *p_string = NULL; + svg_rendition_t *p_svg = NULL; char *psz_string; /* Sanity check */ - if( !p_block ) return NULL; - psz_string = p_block->p_buffer; - if( !psz_string || !*psz_string ) return NULL; - - /* Create and initialize a subpicture */ - p_subpic = p_filter->pf_sub_buffer_new( p_filter ); - if( !p_subpic ) return NULL; + if( !p_region_in || !p_region_out ) return VLC_EGENERIC; + psz_string = p_region_in->psz_text; + if( !psz_string || !*psz_string ) return VLC_EGENERIC; - p_subpic->i_start = p_block->i_pts; - p_subpic->i_stop = p_block->i_pts + p_block->i_length; - /* Always replace rendered text when another is displayed */ - p_subpic->b_ephemer = VLC_TRUE; - p_subpic->b_absolute = VLC_FALSE; + p_svg = malloc( sizeof( svg_rendition_t ) ); + if( !p_svg ) + return VLC_ENOMEM; -// msg_Dbg( p_filter, "adding string \"%s\" start_date "I64Fd + p_region_out->i_x = p_region_in->i_x; + p_region_out->i_y = p_region_in->i_y; - /* Create and initialize private data for the subpicture */ - p_string = malloc( sizeof(subpicture_data_t) ); - if( !p_string ) - { - msg_Err( p_filter, "Out of memory" ); - p_filter->pf_sub_buffer_del( p_filter, p_subpic ); - return NULL; - } /* Check if the data is SVG or pure text. In the latter case, convert the text to SVG. FIXME: find a better test */ if( strstr( psz_string, "psz_text = strdup( psz_string ); - if( !p_string->psz_text ) + p_svg->psz_text = strdup( psz_string ); + if( !p_svg->psz_text ) { - msg_Err( p_filter, "Out of memory" ); - p_filter->pf_sub_buffer_del( p_filter, p_subpic ); - free( p_string ); - return NULL; + free( p_svg ); + return VLC_ENOMEM; } } else { /* Data is text. Convert to SVG */ + /* FIXME: handle p_style attributes */ int length; - byte_t* psz_template = p_sys->psz_template; + char* psz_template = p_sys->psz_template; length = strlen( psz_string ) + strlen( psz_template ) + 42; - p_string->psz_text = malloc( length + 1 ); - if( !p_string->psz_text ) + p_svg->psz_text = calloc( 1, length + 1 ); + if( !p_svg->psz_text ) { - msg_Err( p_filter, "Out of memory" ); - p_filter->pf_sub_buffer_del( p_filter, p_subpic ); - free( p_string ); - return NULL; + free( p_svg ); + return VLC_ENOMEM; } - memset( p_string->psz_text, 0, length + 1 ); - snprintf( p_string->psz_text, length, psz_template, psz_string ); + snprintf( p_svg->psz_text, length, psz_template, psz_string ); } - p_string->i_width = p_sys->i_width; - p_string->i_height = p_sys->i_height; - p_string->i_chroma = VLC_FOURCC('Y','U','V','A'); + p_svg->i_width = p_sys->i_width; + p_svg->i_height = p_sys->i_height; + p_svg->i_chroma = VLC_CODEC_YUVA; /* Render the SVG. The input data is stored in the p_string structure, and the function updates the p_rendition attribute. */ - svg_RenderPicture( p_filter, p_string ); + svg_RenderPicture( p_filter, p_svg ); - Render( p_filter, p_subpic, p_string ); - FreeString( p_string ); - block_Release( p_block ); + Render( p_filter, p_region_out, p_svg, p_svg->i_width, p_svg->i_height ); + FreeString( p_svg ); - return p_subpic; + return VLC_SUCCESS; } -static void FreeString( subpicture_data_t *p_string ) +static void FreeString( svg_rendition_t *p_svg ) { - free( p_string->psz_text ); - free( p_string->p_rendition ); - free( p_string ); + free( p_svg->psz_text ); + /* p_svg->p_rendition is a GdkPixbuf, and its allocation is + managed through ref. counting */ + if( p_svg->p_rendition ) + g_object_unref( p_svg->p_rendition ); + free( p_svg ); }