mirror of
https://github.com/videolan/vlc.git
synced 2024-11-28 12:26:11 +08:00
Fix region width/height encoding bug. Dvbsub never tested for a change in region widht/height that made a region smaller then the previous one that was encoded. The encoded region size would always been the largest size encountered, this is now fixed. Removed some superflous whitespace/
This commit is contained in:
Jean-Paul Saman
parent
a5b73abf55
commit
ac6a6b6850
@ -9,7 +9,7 @@
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* Authors: Gildas Bazin <gbazin@videolan.org>
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* Damien LUCAS <damien.lucas@anevia.com>
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* Laurent Aimar <fenrir@via.ecp.fr>
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* Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
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* Jean-Paul Saman <jpsaman #_at_# m2x dot nl>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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@ -44,7 +44,7 @@
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#define POSX_TEXT N_("X coordinate of the subpicture")
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#define POSX_LONGTEXT N_("You can reposition the subpicture by providing another value here." )
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#define POSY_TEXT N_("Y coordinate of the subpicture")
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#define POSY_LONGTEXT N_("You can reposition the subpicture by providing another value here." )
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@ -88,7 +88,7 @@ vlc_module_begin();
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set_category( CAT_INPUT );
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set_subcategory( SUBCAT_INPUT_SCODEC );
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set_callbacks( Open, Close );
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add_integer( DVBSUB_CFG_PREFIX "position", 8, NULL, POS_TEXT, POS_LONGTEXT, VLC_TRUE );
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change_integer_list( pi_pos_values, ppsz_pos_descriptions, 0 );
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add_integer( DVBSUB_CFG_PREFIX "x", -1, NULL, POSX_TEXT, POSX_LONGTEXT, VLC_FALSE );
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@ -99,7 +99,7 @@ vlc_module_begin();
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set_description( _("DVB subtitles encoder") );
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set_capability( "encoder", 100 );
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set_callbacks( OpenEncoder, CloseEncoder );
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add_integer( ENC_CFG_PREFIX "x", -1, NULL, ENC_POSX_TEXT, ENC_POSX_LONGTEXT, VLC_FALSE );
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add_integer( ENC_CFG_PREFIX "y", -1, NULL, ENC_POSY_TEXT, ENC_POSY_LONGTEXT, VLC_FALSE );
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add_integer( ENC_CFG_PREFIX "timeout", 15, NULL, TIMEOUT_TEXT, TIMEOUT_LONGTEXT, VLC_FALSE );
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@ -207,7 +207,7 @@ struct decoder_sys_t
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int i_spu_position;
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int i_spu_x;
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int i_spu_y;
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vlc_bool_t b_page;
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dvbsub_page_t *p_page;
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dvbsub_region_t *p_regions;
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@ -286,7 +286,7 @@ static int Open( vlc_object_t *p_this )
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p_sys->p_regions = NULL;
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p_sys->p_cluts = NULL;
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p_sys->p_page = NULL;
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var_Create( p_this, DVBSUB_CFG_PREFIX "position", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
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var_Get( p_this, DVBSUB_CFG_PREFIX "position", &val );
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p_sys->i_spu_position = val.i_int;
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@ -296,7 +296,7 @@ static int Open( vlc_object_t *p_this )
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var_Create( p_this, DVBSUB_CFG_PREFIX "y", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
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var_Get( p_this, DVBSUB_CFG_PREFIX "y", &val );
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posy = val.i_int;
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/* Check if subpicture position was overridden */
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p_sys->b_absolute = VLC_TRUE;
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if( posx < 0 || posy < 0)
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@ -316,7 +316,7 @@ static int Open( vlc_object_t *p_this )
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p_sys->i_spu_x = 0;
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p_sys->i_spu_y = 0;
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}
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es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_FOURCC( 'd','v','b','s' ) );
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default_clut_init( p_dec );
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@ -335,7 +335,7 @@ static void Close( vlc_object_t *p_this )
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var_Destroy( p_this, DVBSUB_CFG_PREFIX "x" );
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var_Destroy( p_this, DVBSUB_CFG_PREFIX "y" );
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var_Destroy( p_this, DVBSUB_CFG_PREFIX "position" );
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free_all( p_dec );
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free( p_sys );
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}
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@ -685,7 +685,6 @@ static void decode_page_composition( decoder_t *p_dec, bs_t *s )
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int i_version, i_state, i_segment_length, i_timeout, i;
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/* A page is composed by 0 or more region */
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i_segment_length = bs_read( s, 16 );
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i_timeout = bs_read( s, 8 );
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i_version = bs_read( s, 4 );
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@ -814,6 +813,9 @@ static void decode_region_composition( decoder_t *p_dec, bs_t *s )
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i_width = bs_read( s, 16 );
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i_height = bs_read( s, 16 );
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#ifdef DEBUG_DVBSUB
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msg_Dbg( p_dec, " width=%d height=%d", i_width, i_height );
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#endif
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i_level_comp = bs_read( s, 3 );
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i_depth = bs_read( s, 3 );
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bs_skip( s, 2 ); /* Reserved */
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@ -841,7 +843,7 @@ static void decode_region_composition( decoder_t *p_dec, bs_t *s )
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{
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if( p_region->p_pixbuf )
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{
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msg_Dbg( p_dec, "region size changed (not allowed)" );
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msg_Dbg( p_dec, " changed (not allowed)" );
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free( p_region->p_pixbuf );
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}
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@ -1467,12 +1469,12 @@ static subpicture_t *render( decoder_t *p_dec )
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p_spu->i_stop = p_spu->i_start + (mtime_t) (i_timeout * 1000000);
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p_spu->b_ephemer = VLC_TRUE;
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p_spu->b_fade = VLC_TRUE;
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/* Correct positioning of SPU */
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p_spu->b_absolute = p_sys->b_absolute;
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p_spu->i_flags = p_sys->i_spu_position;
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p_spu->i_x = p_sys->i_spu_x;
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p_spu->i_y = p_sys->i_spu_y;
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p_spu->i_y = p_sys->i_spu_y;
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return p_spu;
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}
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@ -1497,11 +1499,11 @@ struct encoder_sys_t
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encoder_region_t *p_regions;
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mtime_t i_pts;
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/* subpicture positioning */
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int i_offset_x;
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int i_offset_y;
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int i_timeout_delay;
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int i_timeout_delay;
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};
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static void encode_page_composition( encoder_t *, bs_t *, subpicture_t * );
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@ -1552,8 +1554,8 @@ static int OpenEncoder( vlc_object_t *p_this )
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p_sys->i_offset_y = val.i_int;
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var_Create( p_this, ENC_CFG_PREFIX "timeout", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
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var_Get( p_this, ENC_CFG_PREFIX "timeout", &val );
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p_sys->i_timeout_delay = val.i_int;
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p_sys->i_timeout_delay = val.i_int;
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return VLC_SUCCESS;
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}
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@ -1565,7 +1567,7 @@ static subpicture_t *YuvaYuvp( encoder_t *p_enc, subpicture_t *p_subpic )
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subpicture_region_t *p_region = NULL;
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if( !p_subpic ) return NULL;
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for( p_region = p_subpic->p_region; p_region; p_region = p_region->p_next )
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{
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video_format_t *p_fmt = &p_region->fmt;
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@ -1586,38 +1588,38 @@ static subpicture_t *YuvaYuvp( encoder_t *p_enc, subpicture_t *p_subpic )
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#if DEBUG_DVBSUB
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msg_Dbg( p_enc, "YuvaYuvp: i_pixels=%d, i_iterator=%d", i_pixels, i_iterator );
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#endif
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#endif
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p_fmt->i_chroma = VLC_FOURCC('Y','U','V','P');
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p_fmt->p_palette = (video_palette_t *) malloc( sizeof( video_palette_t ) );
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if( !p_fmt->p_palette ) break;
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p_fmt->p_palette->i_entries = 0;
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/* Find best iterator using Euclide’s algorithm */
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for( ; i_iterator > 1 ; i_iterator-- )
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{
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int a = i_pixels;
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int b = i_iterator;
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int c;
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while( b )
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{
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c = a % b;
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a = b;
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b = c;
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}
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if( a == 1 )
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{
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break;
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}
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}
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/* Count colors, build best palette */
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for( i_tolerance = 0; i_tolerance < 128; i_tolerance++ )
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{
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vlc_bool_t b_success = VLC_TRUE;
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p_fmt->p_palette->i_entries = 0;
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for( i = 0; i < i_pixels ; )
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{
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uint8_t y, u, v, a;
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@ -1654,13 +1656,13 @@ static subpicture_t *YuvaYuvp( encoder_t *p_enc, subpicture_t *p_subpic )
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i -= i_pixels;
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}
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}
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if( b_success )
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{
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break;
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}
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}
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#if DEBUG_DVBSUB
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msg_Dbg( p_enc, "best palette has %d colors", p_fmt->p_palette->i_entries );
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#endif
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@ -1678,18 +1680,18 @@ static subpicture_t *YuvaYuvp( encoder_t *p_enc, subpicture_t *p_subpic )
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for( p = 0; p < p_region->picture.p[0].i_visible_lines ; p++ )
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{
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int i_ydelta = 0, i_udelta = 0, i_vdelta = 0, i_adelta = 0;
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for( n = 0; n < p_region->picture.p[0].i_pitch ; n++ )
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{
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int i_offset = p * p_region->picture.p[0].i_pitch + n;
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int y, u, v, a;
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int i_mindist, i_best;
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y = (int)p_region->picture.p[0].p_pixels[i_offset];
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u = (int)p_region->picture.p[1].p_pixels[i_offset];
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v = (int)p_region->picture.p[2].p_pixels[i_offset];
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a = (int)p_region->picture.p[3].p_pixels[i_offset];
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/* Add dithering compensation */
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#ifdef RANDOM_DITHERING
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y += ((i_seed & 0xff) - 0x80) * i_tolerance / 0x80;
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@ -1707,22 +1709,22 @@ static subpicture_t *YuvaYuvp( encoder_t *p_enc, subpicture_t *p_subpic )
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for( i_mindist = 99999999, i_best = 0, j = 0; j < p_fmt->p_palette->i_entries; j++ )
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{
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int i_dist = 0;
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i_dist += abs((int)p_fmt->p_palette->palette[j][0] - y);
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i_dist += abs((int)p_fmt->p_palette->palette[j][1] - u);
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i_dist += abs((int)p_fmt->p_palette->palette[j][2] - v);
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i_dist += 2 * abs((int)p_fmt->p_palette->palette[j][3] - a);
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if( i_dist < i_mindist )
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{
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i_mindist = i_dist;
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i_best = j;
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}
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}
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/* Set pixel to best color */
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p_region->picture.p[0].p_pixels[i_offset] = i_best;
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/* Update dithering state */
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#ifdef RANDOM_DITHERING
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i_seed = (i_seed * 0x1283837) ^ 0x789479 ^ (i_seed >> 13);
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@ -1773,13 +1775,13 @@ static block_t *Encode( encoder_t *p_enc, subpicture_t *p_subpic )
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block_t *p_block;
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if( !p_subpic || !p_subpic->p_region ) return NULL;
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/* FIXME: this is a hack to convert VLC_FOURCC('Y','U','V','A') into
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* VLC_FOURCC('Y','U','V','P')
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*/
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p_region = p_subpic->p_region;
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if( p_region->fmt.i_chroma == VLC_FOURCC('Y','U','V','A') )
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{
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{
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p_temp = YuvaYuvp( p_enc, p_subpic );
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if( !p_temp )
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{
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@ -1788,13 +1790,13 @@ static block_t *Encode( encoder_t *p_enc, subpicture_t *p_subpic )
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}
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p_region = p_subpic->p_region;
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}
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/* Sanity check */
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if( !p_region ) return NULL;
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if( p_region->fmt.i_chroma != VLC_FOURCC('T','E','X','T') &&
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p_region->fmt.i_chroma != VLC_FOURCC('Y','U','V','P') ) return NULL;
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if( p_region->fmt.p_palette )
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{
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switch( p_region->fmt.p_palette->i_entries )
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@ -1807,11 +1809,11 @@ static block_t *Encode( encoder_t *p_enc, subpicture_t *p_subpic )
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default:
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msg_Err( p_enc, "subpicture palette (%d) not handled",
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p_region->fmt.p_palette->i_entries );
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return NULL;
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return NULL;
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}
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}
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/* End of hack */
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#if DEBUG_DVBSUB
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msg_Dbg( p_enc, "encoding subpicture" );
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#endif
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@ -1873,7 +1875,7 @@ static void CloseEncoder( vlc_object_t *p_this )
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var_Destroy( p_this , ENC_CFG_PREFIX "x" );
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var_Destroy( p_this , ENC_CFG_PREFIX "y" );
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var_Destroy( p_this , ENC_CFG_PREFIX "timeout" );
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var_Destroy( p_this , ENC_CFG_PREFIX "timeout" );
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if( p_sys->i_regions ) free( p_sys->p_regions );
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free( p_sys );
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@ -1904,8 +1906,10 @@ static void encode_page_composition( encoder_t *p_enc, bs_t *s,
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p_sys->p_regions[p_sys->i_regions++] = region;
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}
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if( p_sys->p_regions[i_regions].i_width <
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(int)p_region->fmt.i_visible_width )
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if( ( p_sys->p_regions[i_regions].i_width <
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(int)p_region->fmt.i_visible_width ) ||
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( p_sys->p_regions[i_regions].i_width >
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(int)p_region->fmt.i_visible_width ) )
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{
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b_mode_change = VLC_TRUE;
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msg_Dbg( p_enc, "region %i width change: %i -> %i",
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@ -1914,8 +1918,10 @@ static void encode_page_composition( encoder_t *p_enc, bs_t *s,
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p_sys->p_regions[i_regions].i_width =
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p_region->fmt.i_visible_width;
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}
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if( p_sys->p_regions[i_regions].i_height <
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(int)p_region->fmt.i_visible_height )
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if( ( p_sys->p_regions[i_regions].i_height <
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(int)p_region->fmt.i_visible_height ) ||
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( p_sys->p_regions[i_regions].i_height >
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(int)p_region->fmt.i_visible_height ) )
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{
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b_mode_change = VLC_TRUE;
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msg_Dbg( p_enc, "region %i height change: %i -> %i",
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@ -1935,7 +1941,7 @@ static void encode_page_composition( encoder_t *p_enc, bs_t *s,
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i_timeout = (p_subpic->i_stop - p_subpic->i_start) / 1000000;
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}
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bs_write( s, 8, i_timeout + p_sys->i_timeout_delay ); /* Timeout */
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bs_write( s, 8, i_timeout + p_sys->i_timeout_delay ); /* Timeout */
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bs_write( s, 4, p_sys->i_page_ver++ );
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bs_write( s, 2, b_mode_change ?
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DVBSUB_PCS_STATE_CHANGE : DVBSUB_PCS_STATE_ACQUISITION );
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@ -2028,7 +2034,7 @@ static void encode_region_composition( encoder_t *p_enc, bs_t *s,
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if( !b_text )
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{
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video_palette_t *p_pal = p_region->fmt.p_palette;
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if( !p_pal )
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{
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msg_Err( p_enc, "subpicture has no palette - ignoring it" );
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@ -2135,7 +2141,7 @@ static void encode_object( encoder_t *p_enc, bs_t *s, subpicture_t *p_subpic )
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for( i = 0; i < i_size; i++ )
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{
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bs_write( s, 16, p_region->psz_text[i] );
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}
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}
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/* Update segment length */
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SetWBE( &s->p_start[i_length_pos/8],
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@ -2195,7 +2201,7 @@ static void encode_pixel_data( encoder_t *p_enc, bs_t *s,
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{
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case 0:
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break;
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case 4:
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bs_write( s, 8, 0x10 ); /* 2 bit/pixel code string */
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encode_pixel_line_2bp( p_enc, s, p_region, i_line );
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