codecs: add support for ARIB subtitles

Fixed-by: Francois Cartegnie <[email protected]>
Signed-off-by: Francois Cartegnie <[email protected]>

NEWS

@@ -10,6 +10,7 @@ Access:
 Decoder:
  * OMX GPU-zerocopy support for decoding and display on Android using OpenMax IL
  * Support 4:4:4 chroma sampling with VDPAU hw acceleration
+ * Support for ARIB B24 subtitles
 
 Demuxers:
  * Support HD-DVD .evo (H.264, VC-1, MPEG-2, PCM, AC-3, E-AC3, MLP, DTS)

configure.ac

@@ -3032,6 +3032,24 @@ AS_IF( [test "${enable_libass}" != "no"], [
       ])
   ])
 
+dnl
+dnl ARIB subtitles rendering module
+dnl
+AC_ARG_ENABLE(aribsub,
+  [  --enable-aribsub        ARIB Subtitles support (default enabled)])
+AS_IF( [test "${enable_aribsub}" != "no" ],[
+  PKG_CHECK_MODULES(ARIBB24, [aribb24 >= 1.0.1], [
+      have_aribb24="yes"
+      VLC_ADD_PLUGIN([aribsub])
+      VLC_ADD_LIBS([aribsub],[-laribb24])
+      AC_DEFINE(HAVE_ARIBB24, 1, [Define if libaribb24 is available.])
+    ],[
+      AC_MSG_WARN(Library [aribb24] needed for [aribsub] was not found)
+      have_aribb24="no"
+  ])
+  AM_CONDITIONAL([HAVE_ARIBB24], [test "${have_aribb24}" = "yes"])
+])
+
 dnl
 dnl  kate decoder plugin
 dnl

include/vlc_fourcc.h

@@ -452,6 +452,8 @@
 #define VLC_CODEC_OGT       VLC_FOURCC('o','g','t',' ')
 #define VLC_CODEC_CVD       VLC_FOURCC('c','v','d',' ')
 #define VLC_CODEC_TX3G      VLC_FOURCC('t','x','3','g')
+#define VLC_CODEC_ARIB_A    VLC_FOURCC('a','r','b','a')
+#define VLC_CODEC_ARIB_C    VLC_FOURCC('a','r','b','c')
 /* Blu-ray Presentation Graphics */
 #define VLC_CODEC_BD_PG     VLC_FOURCC('b','d','p','g')
 /* EBU STL (TECH. 3264-E) */

modules/MODULES_LIST

@@ -37,6 +37,7 @@ $Id$
  * android_surface: video output for Android, based on Surface
  * antiflicker: anti-flicker video filter
  * araw: Pseudo audio decoder for raw PCM
+ * aribsub: ARIB subtitles decoder
  * asf: ASF demuxer
  * atmo: Ambilight-like video-output
  * attachment: Attachment access module

modules/codec/Makefile.am

@@ -152,6 +152,11 @@ codec_LTLIBRARIES += libcvdsub_plugin.la
 libdvbsub_plugin_la_SOURCES = codec/dvbsub.c
 codec_LTLIBRARIES += libdvbsub_plugin.la
 
+libaribsub_plugin_la_SOURCES = codec/arib/aribsub.c codec/arib/substext.h
+libaribsub_plugin_la_CFLAGS = $(ARIBB24_CFLAGS)
+libaribsub_plugin_la_LIBADD = $(ARIBB24_LIBS)
+codec_LTLIBRARIES += libaribsub_plugin.la
+
 libscte27_plugin_la_SOURCES = codec/scte27.c
 codec_LTLIBRARIES += libscte27_plugin.la
 

modules/codec/arib/aribsub.c

@@ -0,0 +1,337 @@
+/*****************************************************************************
+ * aribsub.c : ARIB subtitles decoder
+ *****************************************************************************
+ * Copyright (C) 2012 Naohiro KORIYAMA
+ *
+ * Authors:  Naohiro KORIYAMA <[email protected]>
+ *
+ * This program 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,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * 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 Lesser 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_codec.h>
+
+#ifdef HAVE_ARIBB24
+ #include "substext.h"
+ #include <aribb24/parser.h>
+ #include <aribb24/decoder.h>
+#endif
+
+//#define DEBUG_ARIBSUB 1
+
+/*****************************************************************************
+ * Module descriptor.
+ *****************************************************************************/
+static int  Open( vlc_object_t * );
+static void Close( vlc_object_t * );
+static subpicture_t *Decode( decoder_t *, block_t ** );
+
+#define IGNORE_RUBY_TEXT N_("Ignore ruby(furigana)")
+#define IGNORE_RUBY_LONGTEXT N_("Ignore ruby(furigana) in the subtitle.")
+#define USE_CORETEXT_TEXT N_("Use Core Text renderer")
+#define USE_CORETEXT_LONGTEXT N_("Use Core Text renderer in the subtitle.")
+
+vlc_module_begin ()
+#   define ARIBSUB_CFG_PREFIX "aribsub-"
+    set_description( N_("ARIB subtitles decoder") )
+    set_shortname( N_("ARIB subtitles") )
+    set_capability( "decoder", 50 )
+    set_category( CAT_INPUT )
+    set_subcategory( SUBCAT_INPUT_SCODEC )
+    set_callbacks( Open, Close )
+
+    add_bool( ARIBSUB_CFG_PREFIX "ignore-ruby", false, IGNORE_RUBY_TEXT, IGNORE_RUBY_LONGTEXT, true )
+    add_bool( ARIBSUB_CFG_PREFIX "use-coretext", false, USE_CORETEXT_TEXT, USE_CORETEXT_LONGTEXT, true )
+vlc_module_end ()
+
+
+/****************************************************************************
+ * Local structures
+ ****************************************************************************/
+
+struct decoder_sys_t
+{
+    bool              b_a_profile;
+    bool              b_ignore_ruby;
+    bool              b_use_coretext;
+    bool              b_ignore_position_adjustment;
+
+    arib_instance_t  *p_arib_instance;
+    char             *psz_arib_base_dir;
+};
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+static subpicture_t *render( decoder_t *, arib_parser_t *,
+                             arib_decoder_t *, block_t * );
+
+static char* get_arib_base_dir( void );
+static void messages_callback_handler( void *, const char *psz_message );
+
+/*****************************************************************************
+ * Open: probe the decoder and return score
+ *****************************************************************************
+ * Tries to launch a decoder and return score so that the interface is able
+ * to choose.
+ *****************************************************************************/
+static int Open( vlc_object_t *p_this )
+{
+    decoder_t     *p_dec = (decoder_t *) p_this;
+    decoder_sys_t *p_sys;
+
+    if( p_dec->fmt_in.i_codec != VLC_CODEC_ARIB_A &&
+        p_dec->fmt_in.i_codec != VLC_CODEC_ARIB_C )
+    {
+        return VLC_EGENERIC;
+    }
+
+    p_sys = (decoder_sys_t*) calloc( 1, sizeof(decoder_sys_t) );
+    if( p_sys == NULL )
+    {
+        return VLC_ENOMEM;
+    }
+
+    p_sys->p_arib_instance = arib_instance_new( (void *) p_this );
+    if ( !p_sys->p_arib_instance )
+    {
+        free( p_sys );
+        return VLC_EGENERIC;
+    }
+
+    p_dec->p_sys = p_sys;
+    p_dec->pf_decode_sub = Decode;
+    p_dec->fmt_out.i_cat = SPU_ES;
+    p_dec->fmt_out.i_codec = 0;
+
+    p_sys->b_a_profile = ( p_dec->fmt_in.i_codec == VLC_CODEC_ARIB_A );
+
+    p_sys->b_ignore_ruby =
+        var_InheritBool( p_this, ARIBSUB_CFG_PREFIX "ignore-ruby" );
+    p_sys->b_use_coretext =
+        var_InheritBool( p_this, ARIBSUB_CFG_PREFIX "use-coretext" );
+    p_sys->b_ignore_position_adjustment = p_sys->b_use_coretext;
+    p_sys->p_arib_instance->b_use_private_conv = p_sys->b_use_coretext;
+    p_sys->p_arib_instance->b_replace_ellipsis = p_sys->b_use_coretext;
+
+    char *psz_basedir = get_arib_base_dir();
+    arib_set_base_path( p_sys->p_arib_instance, psz_basedir );
+    free( psz_basedir );
+
+    arib_register_messages_callback( p_sys->p_arib_instance,
+                                     messages_callback_handler );
+
+    return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Close:
+ *****************************************************************************/
+static void Close( vlc_object_t *p_this )
+{
+    decoder_t     *p_dec = (decoder_t*) p_this;
+    decoder_sys_t *p_sys = p_dec->p_sys;
+
+    arib_instance_destroy( p_sys->p_arib_instance );
+    free( p_sys->psz_arib_base_dir );
+
+    var_Destroy( p_this, ARIBSUB_CFG_PREFIX "ignore-ruby" );
+    var_Destroy( p_this, ARIBSUB_CFG_PREFIX "use-coretext" );
+
+    free( p_sys );
+}
+
+/*****************************************************************************
+ * Decode:
+ *****************************************************************************/
+static subpicture_t *Decode( decoder_t *p_dec, block_t **pp_block )
+{
+    decoder_sys_t *p_sys = p_dec->p_sys;
+    block_t       *p_block;
+    subpicture_t  *p_spu = NULL;
+
+    if( ( pp_block == NULL ) || ( *pp_block == NULL ) )
+    {
+        return NULL;
+    }
+    p_block = *pp_block;
+
+    arib_parser_t *p_parser = arib_get_parser( p_sys->p_arib_instance );
+    arib_decoder_t *p_decoder = arib_get_decoder( p_sys->p_arib_instance );
+    if ( p_parser && p_decoder )
+    {
+        arib_parse_pes( p_parser, p_block->p_buffer, p_block->i_buffer );
+        p_spu = render( p_dec, p_parser, p_decoder, p_block );
+    }
+
+    block_Release( p_block );
+    *pp_block = NULL;
+
+    return p_spu;
+}
+
+/* following functions are local */
+
+static void messages_callback_handler( void *p_opaque, const char *psz_message )
+{
+    decoder_t *p_dec = ( decoder_t * ) p_opaque;
+    msg_Dbg( p_dec, "%s", psz_message );
+}
+
+static char* get_arib_base_dir()
+{
+    char *psz_data_dir = config_GetUserDir( VLC_DATA_DIR );
+    if( psz_data_dir == NULL )
+    {
+        return NULL;
+    }
+
+    char *psz_arib_base_dir;
+    if( asprintf( &psz_arib_base_dir, "%s"DIR_SEP"arib", psz_data_dir ) < 0 )
+    {
+        psz_arib_base_dir = NULL;
+    }
+    free( psz_data_dir );
+
+    return psz_arib_base_dir;
+}
+
+static subpicture_t *render( decoder_t *p_dec, arib_parser_t *p_parser,
+                             arib_decoder_t *p_arib_decoder, block_t *p_block )
+{
+    decoder_sys_t *p_sys = p_dec->p_sys;
+    subpicture_t *p_spu = NULL;
+    char *psz_subtitle = NULL;
+
+    size_t i_data_size;
+    const unsigned char *psz_data = arib_parser_get_data( p_parser, &i_data_size );
+    if( !psz_data || !i_data_size )
+        return NULL;
+
+    size_t i_subtitle_size = i_data_size * 4;
+    psz_subtitle = (char*) calloc( i_subtitle_size + 1, sizeof(*psz_subtitle) );
+    if( psz_subtitle == NULL )
+    {
+        return NULL;
+    }
+    if( p_sys->b_a_profile )
+        arib_initialize_decoder_a_profile( p_arib_decoder );
+    else
+        arib_initialize_decoder_c_profile( p_arib_decoder );
+
+    i_subtitle_size = arib_decode_buffer( p_arib_decoder,
+                                          psz_data,
+                                          i_data_size,
+                                          psz_subtitle,
+                                          i_subtitle_size );
+#ifdef DEBUG_ARIBSUB
+    msg_Dbg( p_dec, "psz_subtitle [%s]", psz_subtitle );
+    unsigned const char* start = psz_data;
+    unsigned const char* end = psz_data + i_data_size;
+    char* psz_subtitle_data_hex = (char*) calloc(
+            i_data_size * 3 + 1, sizeof(char) );
+    char* psz_subtitle_data_hex_idx = psz_subtitle_data_hex;
+    while( start < end )
+    {
+        sprintf(psz_subtitle_data_hex_idx, "%02x ", *start++);
+        psz_subtitle_data_hex_idx += 3;
+    }
+    msg_Dbg( p_dec, "psz_subtitle_data [%s]", psz_subtitle_data_hex);
+    free( psz_subtitle_data_hex );
+#endif
+
+    p_spu = decoder_NewSubpictureText( p_dec );
+    if( p_spu == NULL )
+    {
+        goto decoder_NewSubpictureText_failed;
+    }
+
+    p_spu->i_start = p_block->i_pts;
+    p_spu->i_stop = p_block->i_pts + arib_decoder_get_time( p_arib_decoder );
+    p_spu->b_ephemer  = (p_spu->i_start == p_spu->i_stop);
+    p_spu->b_absolute = true;
+
+    subpicture_updater_sys_t *p_spu_sys = p_spu->updater.p_sys;
+
+    arib_text_region_t *p_region = p_spu_sys->p_region =
+        (arib_text_region_t*) calloc( 1, sizeof(arib_text_region_t) );
+    if( p_region == NULL )
+    {
+        goto malloc_failed;
+    }
+    for( const arib_buf_region_t *p_buf_region = arib_decoder_get_regions( p_arib_decoder );
+         p_buf_region; p_buf_region = p_buf_region->p_next )
+    {
+        if( p_sys->b_ignore_ruby && p_buf_region->i_fontheight == 18 )
+        {
+            continue;
+        }
+
+        int i_size = p_buf_region->p_end - p_buf_region->p_start;
+        char *psz_text = (char*) calloc( i_size + 1, sizeof(char) );
+        if( psz_text == NULL )
+        {
+            goto malloc_failed;
+        }
+        strncpy(psz_text, p_buf_region->p_start, i_size);
+        psz_text[i_size] = '\0';
+#ifdef DEBUG_ARIBSUB
+        msg_Dbg( p_dec, "psz_text [%s]", psz_text );
+#endif
+
+        p_region->psz_text = strdup( psz_text );
+        free( psz_text );
+        p_region->psz_html = NULL;
+        p_region->psz_fontname = NULL;
+        p_region->i_font_color = p_buf_region->i_foreground_color;
+        p_region->i_planewidth = p_buf_region->i_planewidth;
+        p_region->i_planeheight = p_buf_region->i_planeheight;
+        p_region->i_fontwidth = p_buf_region->i_fontwidth;
+        p_region->i_fontheight = p_buf_region->i_fontheight;
+        p_region->i_verint = p_buf_region->i_verint;
+        p_region->i_horint = p_buf_region->i_horint;
+        p_region->i_charleft = p_buf_region->i_charleft;
+        p_region->i_charbottom = p_buf_region->i_charbottom;
+        p_region->i_charleft_adj = 0;
+        p_region->i_charbottom_adj = 0;
+        if( !p_sys->b_ignore_position_adjustment )
+        {
+            p_region->i_charleft_adj = p_buf_region->i_horadj;
+            p_region->i_charbottom_adj = p_buf_region->i_veradj;
+        }
+        p_region->p_next = NULL;
+        if( p_buf_region->p_next != NULL )
+        {
+            p_region = p_region->p_next =
+                (arib_text_region_t*) calloc( 1, sizeof(arib_text_region_t) );
+            if( p_region == NULL )
+            {
+                goto malloc_failed;
+            }
+        }
+    }
+
+decoder_NewSubpictureText_failed:
+malloc_failed:
+    arib_finalize_decoder( p_arib_decoder );
+    free( psz_subtitle );
+
+    return p_spu;
+}