libass.c
资源名称:vlc-1.0.5.zip [点击查看]
上传用户:kjfoods
上传日期:2020-07-06
资源大小:29949k
文件大小:25k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * SSA/ASS subtitle decoder using libass.
- *****************************************************************************
- * Copyright (C) 2008-2009 the VideoLAN team
- * $Id: 4a33621166da3ea930fa76848d05a4277232c82a $
- *
- * Authors: Laurent Aimar <fenrir@videolan.org>
- *
- * 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 program 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.
- *
- * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- *****************************************************************************/
- /*****************************************************************************
- * Preamble
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <string.h>
- #include <limits.h>
- #include <assert.h>
- #include <math.h>
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_vout.h>
- #include <vlc_codec.h>
- #include <vlc_osd.h>
- #include <vlc_input.h>
- #include <vlc_dialog.h>
- #include <ass/ass.h>
- #if defined(WIN32)
- # include <vlc_charset.h>
- #endif
- /* Compatibility with old libass */
- #if !defined(LIBASS_VERSION) || LIBASS_VERSION < 0x00907010
- # define ASS_Renderer ass_renderer_t
- # define ASS_Library ass_library_t
- # define ASS_Track ass_track_t
- # define ASS_Image ass_image_t
- #endif
- /*****************************************************************************
- * Module descriptor
- *****************************************************************************/
- static int Create ( vlc_object_t * );
- static void Destroy( vlc_object_t * );
- vlc_module_begin ()
- set_shortname( N_("Subtitles (advanced)"))
- set_description( N_("Subtitle renderers using libass") )
- set_capability( "decoder", 100 )
- set_category( CAT_INPUT )
- set_subcategory( SUBCAT_INPUT_SCODEC )
- set_callbacks( Create, Destroy )
- vlc_module_end ()
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- static subpicture_t *DecodeBlock( decoder_t *, block_t ** );
- static void DestroySubpicture( subpicture_t * );
- static void PreRender( spu_t *, subpicture_t *, const video_format_t * );
- static void UpdateRegions( spu_t *,
- subpicture_t *, const video_format_t *, mtime_t );
- /* Yes libass sux with threads */
- typedef struct
- {
- vlc_object_t *p_libvlc;
- int i_refcount;
- ASS_Library *p_library;
- ASS_Renderer *p_renderer;
- video_format_t fmt;
- } ass_handle_t;
- static ass_handle_t *AssHandleHold( decoder_t *p_dec );
- static void AssHandleRelease( ass_handle_t * );
- /* */
- struct decoder_sys_t
- {
- mtime_t i_max_stop;
- /* decoder_sys_t is shared between decoder and spu units */
- vlc_mutex_t lock;
- int i_refcount;
- /* */
- ass_handle_t *p_ass;
- /* */
- ASS_Track *p_track;
- /* */
- subpicture_t *p_spu_final;
- };
- static void DecSysRelease( decoder_sys_t *p_sys );
- static void DecSysHold( decoder_sys_t *p_sys );
- struct subpicture_sys_t
- {
- decoder_sys_t *p_dec_sys;
- void *p_subs_data;
- int i_subs_len;
- mtime_t i_pts;
- };
- typedef struct
- {
- int x0;
- int y0;
- int x1;
- int y1;
- } rectangle_t;
- static int BuildRegions( spu_t *p_spu, rectangle_t *p_region, int i_max_region, ASS_Image *p_img_list, int i_width, int i_height );
- static void SubpictureReleaseRegions( spu_t *p_spu, subpicture_t *p_subpic );
- static void RegionDraw( subpicture_region_t *p_region, ASS_Image *p_img );
- static vlc_mutex_t libass_lock = VLC_STATIC_MUTEX;
- //#define DEBUG_REGION
- /*****************************************************************************
- * Create: Open libass decoder.
- *****************************************************************************/
- static int Create( vlc_object_t *p_this )
- {
- decoder_t *p_dec = (decoder_t *)p_this;
- decoder_sys_t *p_sys;
- ASS_Track *p_track;
- if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','s','a',' ') )
- return VLC_EGENERIC;
- p_dec->pf_decode_sub = DecodeBlock;
- p_dec->p_sys = p_sys = malloc( sizeof( decoder_sys_t ) );
- if( !p_sys )
- return VLC_ENOMEM;
- /* */
- p_sys->i_max_stop = VLC_TS_INVALID;
- p_sys->p_ass = AssHandleHold( p_dec );
- if( !p_sys->p_ass )
- {
- free( p_sys );
- return VLC_EGENERIC;
- }
- vlc_mutex_init( &p_sys->lock );
- p_sys->i_refcount = 1;
- /* Add a track */
- vlc_mutex_lock( &libass_lock );
- p_sys->p_track = p_track = ass_new_track( p_sys->p_ass->p_library );
- if( !p_track )
- {
- vlc_mutex_unlock( &libass_lock );
- DecSysRelease( p_sys );
- return VLC_EGENERIC;
- }
- ass_process_codec_private( p_track, p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra );
- vlc_mutex_unlock( &libass_lock );
- p_dec->fmt_out.i_cat = SPU_ES;
- p_dec->fmt_out.i_codec = VLC_FOURCC('R','G','B','A');
- return VLC_SUCCESS;
- }
- /*****************************************************************************
- * Destroy: finish
- *****************************************************************************/
- static void Destroy( vlc_object_t *p_this )
- {
- decoder_t *p_dec = (decoder_t *)p_this;
- DecSysRelease( p_dec->p_sys );
- }
- static void DecSysHold( decoder_sys_t *p_sys )
- {
- vlc_mutex_lock( &p_sys->lock );
- p_sys->i_refcount++;
- vlc_mutex_unlock( &p_sys->lock );
- }
- static void DecSysRelease( decoder_sys_t *p_sys )
- {
- /* */
- vlc_mutex_lock( &p_sys->lock );
- p_sys->i_refcount--;
- if( p_sys->i_refcount > 0 )
- {
- vlc_mutex_unlock( &p_sys->lock );
- return;
- }
- vlc_mutex_unlock( &p_sys->lock );
- vlc_mutex_destroy( &p_sys->lock );
- vlc_mutex_lock( &libass_lock );
- if( p_sys->p_track )
- ass_free_track( p_sys->p_track );
- vlc_mutex_unlock( &libass_lock );
- AssHandleRelease( p_sys->p_ass );
- free( p_sys );
- }
- /****************************************************************************
- * DecodeBlock:
- ****************************************************************************/
- static subpicture_t *DecodeBlock( decoder_t *p_dec, block_t **pp_block )
- {
- decoder_sys_t *p_sys = p_dec->p_sys;
- subpicture_t *p_spu = NULL;
- block_t *p_block;
- if( !pp_block || *pp_block == NULL )
- return NULL;
- p_block = *pp_block;
- if( p_block->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED) )
- {
- p_sys->i_max_stop = VLC_TS_INVALID;
- block_Release( p_block );
- return NULL;
- }
- *pp_block = NULL;
- if( p_block->i_buffer == 0 || p_block->p_buffer[0] == ' ' )
- {
- block_Release( p_block );
- return NULL;
- }
- p_spu = decoder_NewSubpicture( p_dec );
- if( !p_spu )
- {
- msg_Warn( p_dec, "can't get spu buffer" );
- block_Release( p_block );
- return NULL;
- }
- p_spu->p_sys = malloc( sizeof( subpicture_sys_t ));
- if( !p_spu->p_sys )
- {
- decoder_DeleteSubpicture( p_dec, p_spu );
- block_Release( p_block );
- return NULL;
- }
- p_spu->p_sys->i_subs_len = p_block->i_buffer;
- p_spu->p_sys->p_subs_data = malloc( p_block->i_buffer );
- if( !p_spu->p_sys->p_subs_data )
- {
- free( p_spu->p_sys );
- decoder_DeleteSubpicture( p_dec, p_spu );
- block_Release( p_block );
- return NULL;
- }
- memcpy( p_spu->p_sys->p_subs_data, p_block->p_buffer,
- p_block->i_buffer );
- p_spu->p_sys->i_pts = p_block->i_pts;
- p_spu->i_start = p_block->i_pts;
- p_spu->i_stop = __MAX( p_sys->i_max_stop, p_block->i_pts + p_block->i_length );
- p_spu->b_ephemer = true;
- p_spu->b_absolute = true;
- p_sys->i_max_stop = p_spu->i_stop;
- vlc_mutex_lock( &libass_lock );
- if( p_sys->p_track )
- {
- ass_process_chunk( p_sys->p_track, p_spu->p_sys->p_subs_data, p_spu->p_sys->i_subs_len,
- p_block->i_pts / 1000, p_block->i_length / 1000 );
- }
- vlc_mutex_unlock( &libass_lock );
- p_spu->pf_pre_render = PreRender;
- p_spu->pf_update_regions = UpdateRegions;
- p_spu->pf_destroy = DestroySubpicture;
- p_spu->p_sys->p_dec_sys = p_sys;
- DecSysHold( p_sys );
- block_Release( p_block );
- return p_spu;
- }
- /****************************************************************************
- *
- ****************************************************************************/
- static void DestroySubpicture( subpicture_t *p_subpic )
- {
- DecSysRelease( p_subpic->p_sys->p_dec_sys );
- free( p_subpic->p_sys->p_subs_data );
- free( p_subpic->p_sys );
- }
- static void PreRender( spu_t *p_spu, subpicture_t *p_subpic,
- const video_format_t *p_fmt )
- {
- decoder_sys_t *p_dec_sys = p_subpic->p_sys->p_dec_sys;
- p_dec_sys->p_spu_final = p_subpic;
- VLC_UNUSED(p_fmt);
- VLC_UNUSED(p_spu);
- }
- static void UpdateRegions( spu_t *p_spu, subpicture_t *p_subpic,
- const video_format_t *p_fmt, mtime_t i_ts )
- {
- decoder_sys_t *p_sys = p_subpic->p_sys->p_dec_sys;
- ass_handle_t *p_ass = p_sys->p_ass;
- video_format_t fmt;
- bool b_fmt_changed;
- if( p_subpic != p_sys->p_spu_final )
- {
- SubpictureReleaseRegions( p_spu, p_subpic );
- return;
- }
- vlc_mutex_lock( &libass_lock );
- /* */
- fmt = *p_fmt;
- fmt.i_chroma = VLC_FOURCC('R','G','B','A');
- fmt.i_width = fmt.i_visible_width;
- fmt.i_height = fmt.i_visible_height;
- fmt.i_bits_per_pixel = 0;
- fmt.i_x_offset = fmt.i_y_offset = 0;
- b_fmt_changed = memcmp( &fmt, &p_ass->fmt, sizeof(fmt) ) != 0;
- if( b_fmt_changed )
- {
- ass_set_frame_size( p_ass->p_renderer, fmt.i_width, fmt.i_height );
- #if defined( LIBASS_VERSION ) && LIBASS_VERSION >= 0x00907000
- ass_set_aspect_ratio( p_ass->p_renderer, 1.0, 1.0 ); // TODO ?
- #else
- ass_set_aspect_ratio( p_ass->p_renderer, 1.0 ); // TODO ?
- #endif
- p_ass->fmt = fmt;
- }
- /* */
- const mtime_t i_stream_date = p_subpic->p_sys->i_pts + (i_ts - p_subpic->i_start);
- int i_changed;
- ASS_Image *p_img = ass_render_frame( p_ass->p_renderer, p_sys->p_track,
- i_stream_date/1000, &i_changed );
- if( !i_changed && !b_fmt_changed &&
- (p_img != NULL) == (p_subpic->p_region != NULL) )
- {
- vlc_mutex_unlock( &libass_lock );
- return;
- }
- /* */
- p_subpic->i_original_picture_height = fmt.i_height;
- p_subpic->i_original_picture_width = fmt.i_width;
- SubpictureReleaseRegions( p_spu, p_subpic );
- /* XXX to improve efficiency we merge regions that are close minimizing
- * the lost surface.
- * libass tends to create a lot of small regions and thus spu engine
- * reinstanciate a lot the scaler, and as we do not support subpel blending
- * it looks ugly (text unaligned).
- */
- const int i_max_region = 4;
- rectangle_t region[i_max_region];
- const int i_region = BuildRegions( p_spu, region, i_max_region, p_img, fmt.i_width, fmt.i_height );
- if( i_region <= 0 )
- {
- vlc_mutex_unlock( &libass_lock );
- return;
- }
- /* Allocate the regions and draw them */
- subpicture_region_t *pp_region[i_max_region];
- subpicture_region_t **pp_region_last = &p_subpic->p_region;
- for( int i = 0; i < i_region; i++ )
- {
- subpicture_region_t *r;
- video_format_t fmt_region;
- /* */
- fmt_region = fmt;
- fmt_region.i_width =
- fmt_region.i_visible_width = region[i].x1 - region[i].x0;
- fmt_region.i_height =
- fmt_region.i_visible_height = region[i].y1 - region[i].y0;
- pp_region[i] = r = subpicture_region_New( &fmt_region );
- if( !r )
- break;
- r->i_x = region[i].x0;
- r->i_y = region[i].y0;
- r->i_align = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT;
- /* */
- RegionDraw( r, p_img );
- /* */
- *pp_region_last = r;
- pp_region_last = &r->p_next;
- }
- vlc_mutex_unlock( &libass_lock );
- }
- static rectangle_t r_create( int x0, int y0, int x1, int y1 )
- {
- rectangle_t r = { x0, y0, x1, y1 };
- return r;
- }
- static rectangle_t r_img( const ASS_Image *p_img )
- {
- return r_create( p_img->dst_x, p_img->dst_y, p_img->dst_x+p_img->w, p_img->dst_y+p_img->h );
- }
- static void r_add( rectangle_t *r, const rectangle_t *n )
- {
- r->x0 = __MIN( r->x0, n->x0 );
- r->y0 = __MIN( r->y0, n->y0 );
- r->x1 = __MAX( r->x1, n->x1 );
- r->y1 = __MAX( r->y1, n->y1 );
- }
- static int r_surface( const rectangle_t *r )
- {
- return (r->x1-r->x0) * (r->y1-r->y0);
- }
- static bool r_overlap( const rectangle_t *a, const rectangle_t *b, int i_dx, int i_dy )
- {
- return __MAX(a->x0-i_dx, b->x0) < __MIN( a->x1+i_dx, b->x1 ) &&
- __MAX(a->y0-i_dy, b->y0) < __MIN( a->y1+i_dy, b->y1 );
- }
- static int BuildRegions( spu_t *p_spu, rectangle_t *p_region, int i_max_region, ASS_Image *p_img_list, int i_width, int i_height )
- {
- ASS_Image *p_tmp;
- int i_count;
- VLC_UNUSED(p_spu);
- #ifdef DEBUG_REGION
- int64_t i_ck_start = mdate();
- #endif
- for( p_tmp = p_img_list, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->next )
- if( p_tmp->w > 0 && p_tmp->h > 0 )
- i_count++;
- if( i_count <= 0 )
- return 0;
- ASS_Image **pp_img = calloc( i_count, sizeof(*pp_img) );
- if( !pp_img )
- return 0;
- for( p_tmp = p_img_list, i_count = 0; p_tmp != NULL; p_tmp = p_tmp->next )
- if( p_tmp->w > 0 && p_tmp->h > 0 )
- pp_img[i_count++] = p_tmp;
- /* */
- const int i_w_inc = __MAX( ( i_width + 49 ) / 50, 32 );
- const int i_h_inc = __MAX( ( i_height + 99 ) / 100, 32 );
- int i_maxh = i_w_inc;
- int i_maxw = i_h_inc;
- int i_region;
- rectangle_t region[i_max_region+1];
- i_region = 0;
- for( int i_used = 0; i_used < i_count; )
- {
- int n;
- for( n = 0; n < i_count; n++ )
- {
- if( pp_img[n] )
- break;
- }
- assert( i_region < i_max_region + 1 );
- region[i_region++] = r_img( pp_img[n] );
- pp_img[n] = NULL; i_used++;
- bool b_ok;
- do {
- b_ok = false;
- for( n = 0; n < i_count; n++ )
- {
- ASS_Image *p_img = pp_img[n];
- if( !p_img )
- continue;
- rectangle_t r = r_img( p_img );
- int k;
- int i_best = -1;
- int i_best_s = INT_MAX;
- for( k = 0; k < i_region; k++ )
- {
- if( !r_overlap( ®ion[k], &r, i_maxw, i_maxh ) )
- continue;
- int s = r_surface( &r );
- if( s < i_best_s )
- {
- i_best_s = s;
- i_best = k;
- }
- }
- if( i_best >= 0 )
- {
- r_add( ®ion[i_best], &r );
- pp_img[n] = NULL; i_used++;
- b_ok = true;
- }
- }
- } while( b_ok );
- if( i_region > i_max_region )
- {
- int i_best_i = -1;
- int i_best_j = -1;
- int i_best_ds = INT_MAX;
- /* merge best */
- for( int i = 0; i < i_region; i++ )
- {
- for( int j = i+1; j < i_region; j++ )
- {
- rectangle_t n = region[i];
- r_add( &n, ®ion[j] );
- int ds = r_surface( &n ) - r_surface( ®ion[i] ) - r_surface( ®ion[j] );
- if( ds < i_best_ds )
- {
- i_best_i = i;
- i_best_j = j;
- i_best_ds = ds;
- }
- }
- }
- #ifdef DEBUG_REGION
- msg_Err( p_spu, "Merging %d and %d", i_best_i, i_best_j );
- #endif
- r_add( ®ion[i_best_i], ®ion[i_best_j] );
- if( i_best_j+1 < i_region )
- memmove( ®ion[i_best_j], ®ion[i_best_j+1], sizeof(*region) * ( i_region - (i_best_j+1) ) );
- i_region--;
- }
- }
- /* */
- for( int n = 0; n < i_region; n++ )
- p_region[n] = region[n];
- #ifdef DEBUG_REGION
- int64_t i_ck_time = mdate() - i_ck_start;
- msg_Err( p_spu, "ASS: %d objects merged into %d region in %d micros", i_count, i_region, (int)(i_ck_time) );
- #endif
- free( pp_img );
- return i_region;
- }
- static void RegionDraw( subpicture_region_t *p_region, ASS_Image *p_img )
- {
- const plane_t *p = &p_region->p_picture->p[0];
- const int i_x = p_region->i_x;
- const int i_y = p_region->i_y;
- const int i_width = p_region->fmt.i_width;
- const int i_height = p_region->fmt.i_height;
- memset( p->p_pixels, 0x00, p->i_pitch * p->i_lines );
- for( ; p_img != NULL; p_img = p_img->next )
- {
- if( p_img->dst_x < i_x || p_img->dst_x + p_img->w > i_x + i_width ||
- p_img->dst_y < i_y || p_img->dst_y + p_img->h > i_y + i_height )
- continue;
- const unsigned r = (p_img->color >> 24)&0xff;
- const unsigned g = (p_img->color >> 16)&0xff;
- const unsigned b = (p_img->color >> 8)&0xff;
- const unsigned a = (p_img->color )&0xff;
- int x, y;
- for( y = 0; y < p_img->h; y++ )
- {
- for( x = 0; x < p_img->w; x++ )
- {
- const unsigned alpha = p_img->bitmap[y*p_img->stride+x];
- const unsigned an = (255 - a) * alpha / 255;
- uint8_t *p_rgba = &p->p_pixels[(y+p_img->dst_y-i_y) * p->i_pitch + 4 * (x+p_img->dst_x-i_x)];
- const unsigned ao = p_rgba[3];
- /* Native endianness, but RGBA ordering */
- if( ao == 0 )
- {
- /* Optimized but the else{} will produce the same result */
- p_rgba[0] = r;
- p_rgba[1] = g;
- p_rgba[2] = b;
- p_rgba[3] = an;
- }
- else
- {
- p_rgba[3] = 255 - ( 255 - p_rgba[3] ) * ( 255 - an ) / 255;
- if( p_rgba[3] != 0 )
- {
- p_rgba[0] = ( p_rgba[0] * ao * (255-an) / 255 + r * an ) / p_rgba[3];
- p_rgba[1] = ( p_rgba[1] * ao * (255-an) / 255 + g * an ) / p_rgba[3];
- p_rgba[2] = ( p_rgba[2] * ao * (255-an) / 255 + b * an ) / p_rgba[3];
- }
- }
- }
- }
- }
- #ifdef DEBUG_REGION
- /* XXX Draw a box for debug */
- #define P(x,y) ((uint32_t*)&p->p_pixels[(y)*p->i_pitch + 4*(x)])
- for( int y = 0; y < p->i_lines; y++ )
- *P(0,y) = *P(p->i_visible_pitch/4-1,y) = 0xff000000;
- for( int x = 0; x < p->i_visible_pitch; x++ )
- *P(x/4,0) = *P(x/4,p->i_visible_lines-1) = 0xff000000;
- #undef P
- #endif
- }
- static void SubpictureReleaseRegions( spu_t *p_spu, subpicture_t *p_subpic )
- {
- VLC_UNUSED( p_spu );
- subpicture_region_ChainDelete( p_subpic->p_region );
- p_subpic->p_region = NULL;
- }
- /* */
- static ass_handle_t *AssHandleHold( decoder_t *p_dec )
- {
- vlc_mutex_lock( &libass_lock );
- ass_handle_t *p_ass = NULL;
- ASS_Library *p_library = NULL;
- ASS_Renderer *p_renderer = NULL;
- vlc_value_t val;
- var_Create( p_dec->p_libvlc, "libass-handle", VLC_VAR_ADDRESS );
- if( var_Get( p_dec->p_libvlc, "libass-handle", &val ) )
- val.p_address = NULL;
- if( val.p_address )
- {
- p_ass = val.p_address;
- p_ass->i_refcount++;
- vlc_mutex_unlock( &libass_lock );
- return p_ass;
- }
- /* */
- p_ass = malloc( sizeof(*p_ass) );
- if( !p_ass )
- goto error;
- /* */
- p_ass->p_libvlc = VLC_OBJECT(p_dec->p_libvlc);
- p_ass->i_refcount = 1;
- /* Create libass library */
- p_ass->p_library = p_library = ass_library_init();
- if( !p_library )
- goto error;
- /* load attachments */
- input_attachment_t **pp_attachments;
- int i_attachments;
- if( decoder_GetInputAttachments( p_dec, &pp_attachments, &i_attachments ))
- {
- i_attachments = 0;
- pp_attachments = NULL;
- }
- for( int k = 0; k < i_attachments; k++ )
- {
- input_attachment_t *p_attach = pp_attachments[k];
- if( !strcasecmp( p_attach->psz_mime, "application/x-truetype-font" ) )
- {
- msg_Dbg( p_dec, "adding embedded font %s", p_attach->psz_name );
- ass_add_font( p_ass->p_library, p_attach->psz_name, p_attach->p_data, p_attach->i_data );
- }
- vlc_input_attachment_Delete( p_attach );
- }
- free( pp_attachments );
- char *psz_font_dir = NULL;
- #if defined(WIN32)
- dialog_progress_bar_t *p_dialog = dialog_ProgressCreate( p_dec,
- _("Building font cache"),
- _( "Please wait while your font cache is rebuild.n"
- "This should take less than a minute." ), NULL );
- /* This makes Windows build of VLC hang */
- const UINT uPath = GetSystemWindowsDirectoryW( NULL, 0 );
- if( uPath > 0 )
- {
- wchar_t *psw_path = calloc( uPath + 1, sizeof(wchar_t) );
- if( psw_path )
- {
- if( GetSystemWindowsDirectoryW( psw_path, uPath + 1 ) > 0 )
- {
- char *psz_tmp = FromWide( psw_path );
- if( psz_tmp &&
- asprintf( &psz_font_dir, "%s\Fonts", psz_tmp ) < 0 )
- psz_font_dir = NULL;
- free( psz_tmp );
- }
- free( psw_path );
- }
- }
- #endif
- if( !psz_font_dir )
- psz_font_dir = config_GetCacheDir();
- if( !psz_font_dir )
- goto error;
- msg_Dbg( p_dec, "Setting libass fontdir: %s", psz_font_dir );
- ass_set_fonts_dir( p_library, psz_font_dir );
- free( psz_font_dir );
- #ifdef WIN32
- if( p_dialog )
- dialog_ProgressSet( p_dialog, NULL, 0.1 );
- #endif
- ass_set_extract_fonts( p_library, true );
- ass_set_style_overrides( p_library, NULL );
- /* Create the renderer */
- p_ass->p_renderer = p_renderer = ass_renderer_init( p_library );
- if( !p_renderer )
- goto error;
- ass_set_use_margins( p_renderer, false);
- //if( false )
- // ass_set_margins( p_renderer, int t, int b, int l, int r);
- ass_set_hinting( p_renderer, ASS_HINTING_LIGHT );
- ass_set_font_scale( p_renderer, 1.0 );
- ass_set_line_spacing( p_renderer, 0.0 );
- const char *psz_font = NULL; /* We don't ship a default font with VLC */
- const char *psz_family = "Arial"; /* Use Arial if we can't find anything more suitable */
- #ifdef HAVE_FONTCONFIG
- #ifdef WIN32
- if( p_dialog )
- dialog_ProgressSet( p_dialog, NULL, 0.2 );
- #endif
- #if defined( LIBASS_VERSION ) && LIBASS_VERSION >= 0x00907000
- ass_set_fonts( p_renderer, psz_font, psz_family, true, NULL, 1 ); // setup default font/family
- #else
- ass_set_fonts( p_renderer, psz_font, psz_family ); // setup default font/family
- #endif
- #ifdef WIN32
- if( p_dialog )
- dialog_ProgressSet( p_dialog, NULL, 1.0 );
- #endif
- #else
- /* FIXME you HAVE to give him a font if no fontconfig */
- #if defined( LIBASS_VERSION ) && LIBASS_VERSION >= 0x00907000
- ass_set_fonts( p_renderer, psz_font, psz_family, false, NULL, 1 );
- #else
- ass_set_fonts_nofc( p_renderer, psz_font, psz_family );
- #endif
- #endif
- memset( &p_ass->fmt, 0, sizeof(p_ass->fmt) );
- /* */
- val.p_address = p_ass;
- var_Set( p_dec->p_libvlc, "libass-handle", val );
- /* */
- vlc_mutex_unlock( &libass_lock );
- #ifdef WIN32
- if( p_dialog )
- dialog_ProgressDestroy( p_dialog );
- #endif
- return p_ass;
- error:
- if( p_renderer )
- ass_renderer_done( p_renderer );
- if( p_library )
- ass_library_done( p_library );
- msg_Warn( p_dec, "Libass creation failed" );
- free( p_ass );
- vlc_mutex_unlock( &libass_lock );
- return NULL;
- }
- static void AssHandleRelease( ass_handle_t *p_ass )
- {
- vlc_mutex_lock( &libass_lock );
- p_ass->i_refcount--;
- if( p_ass->i_refcount > 0 )
- {
- vlc_mutex_unlock( &libass_lock );
- return;
- }
- ass_renderer_done( p_ass->p_renderer );
- ass_library_done( p_ass->p_library );
- vlc_value_t val;
- val.p_address = NULL;
- var_Set( p_ass->p_libvlc, "libass-handle", val );
- vlc_mutex_unlock( &libass_lock );
- free( p_ass );
- }