t140.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:3k
源码类别:
midi
开发平台:
Unix_Linux
- /*****************************************************************************
- * t140.c : trivial T.140 text encoder
- *****************************************************************************
- * Copyright © 2007 Rémi Denis-Courmont
- * $Id: 2b891998941200ac70844ee0a03007eea56157c8 $
- *
- * 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.
- *****************************************************************************/
- #ifdef HAVE_CONFIG_H
- # include "config.h"
- #endif
- #include <vlc_common.h>
- #include <vlc_plugin.h>
- #include <vlc_vout.h>
- #include <vlc_codec.h>
- #include <vlc_sout.h>
- static int Open ( vlc_object_t * );
- static void Close( vlc_object_t * );
- vlc_module_begin ()
- add_submodule ()
- set_description( N_("T.140 text encoder") )
- set_capability( "encoder", 100 )
- set_callbacks( Open, Close )
- vlc_module_end ()
- static block_t *Encode ( encoder_t *, subpicture_t * );
- static int Open( vlc_object_t *p_this )
- {
- encoder_t *p_enc = (encoder_t *)p_this;
- switch( p_enc->fmt_out.i_codec )
- {
- case VLC_FOURCC('s','u','b','t'):
- if( ( p_enc->fmt_out.subs.psz_encoding != NULL )
- && strcasecmp( p_enc->fmt_out.subs.psz_encoding, "utf8" )
- && strcasecmp( p_enc->fmt_out.subs.psz_encoding, "UTF-8" ) )
- {
- msg_Err( p_this, "Only UTF-8 encoding supported" );
- return VLC_EGENERIC;
- }
- case VLC_FOURCC('t','1','4','0'):
- break;
- default:
- if( !p_enc->b_force )
- return VLC_EGENERIC;
- p_enc->fmt_out.i_codec = VLC_FOURCC('t','1','4','0');
- }
- p_enc->p_sys = NULL;
- p_enc->pf_encode_sub = Encode;
- p_enc->fmt_out.i_cat = SPU_ES;
- return VLC_SUCCESS;
- }
- static void Close( vlc_object_t *p_this )
- {
- (void)p_this;
- }
- static block_t *Encode( encoder_t *p_enc, subpicture_t *p_spu )
- {
- subpicture_region_t *p_region;
- block_t *p_block;
- size_t len;
- if( p_spu == NULL )
- return NULL;
- p_region = p_spu->p_region;
- if( ( p_region == NULL )
- || ( p_region->fmt.i_chroma != VLC_FOURCC('T','E','X','T') )
- || ( p_region->psz_text == NULL ) )
- return NULL;
- /* This should already be UTF-8 encoded, so not much effort... */
- len = strlen( p_region->psz_text );
- p_block = block_New( p_enc, len );
- memcpy( p_block->p_buffer, p_region->psz_text, len );
- p_block->i_pts = p_block->i_dts = p_spu->i_start;
- if( !p_spu->b_ephemer && ( p_spu->i_stop > p_spu->i_start ) )
- p_block->i_length = p_spu->i_stop - p_spu->i_start;
- return p_block;
- }