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vlc-1.1
Commit 62b54aa5 authored by Gildas Bazin's avatar Gildas Bazin
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* modules/codec/dvbsub.c: 

  - rewrite using the pixel buffer memory model as described in ETSI EN 300 743.
  - code simplification.
  - more compliant.
parent c14fe1b2
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modules/codec/dvbsub.c
View file @ 62b54aa5
......@@ -6,9 +6,9 @@
* Copyright (C) 2003-2004 VideoLAN
* $Id$
*
* Authors: Damien LUCAS <damien.lucas@anevia.com>
* Authors: Gildas Bazin <gbazin@videolan.org>
* Damien LUCAS <damien.lucas@anevia.com>
* Laurent Aimar <fenrir@via.ecp.fr>
* Gildas Bazin <gbazin@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
......@@ -34,7 +34,7 @@
#include "vlc_bits.h"
//#define DEBUG_DVBSUB 1
#define DEBUG_DVBSUB 1
/*****************************************************************************
* Module descriptor.
......@@ -67,126 +67,85 @@ static const char *ppsz_enc_options[] = { NULL };
* Those structures refer closely to the ETSI 300 743 Object model
****************************************************************************/
/* Storage of a RLE entry */
typedef struct dvbsub_rle_s
{
uint16_t i_num;
int i_color_code;
int i_bpp;
uint8_t y;
uint8_t cr;
uint8_t cb;
uint8_t t;
struct dvbsub_rle_s *p_next;
} dvbsub_rle_t;
/* A subpicture image is a list of codes
* We need to store the length of each line since nothing specify in
* the standard that all lines should have the same length
* WARNING: We assume here that a spu is less than 576 lines high */
typedef struct
{
uint16_t i_rows;
uint16_t i_cols[576];
dvbsub_rle_t *p_last;
dvbsub_rle_t *p_codes;
} dvbsub_image_t;
/* The object definition gives the position of the object in a region */
typedef struct dvbsub_objectdef_s
{
uint16_t i_id;
uint8_t i_type;
uint8_t i_provider;
uint16_t i_x;
uint16_t i_y;
uint8_t i_fg_pc;
uint8_t i_bg_pc;
int i_id;
int i_type;
int i_x;
int i_y;
int i_fg_pc;
int i_bg_pc;
} dvbsub_objectdef_t;
/* An object is constituted of 2 images (for interleaving) */
typedef struct dvbsub_object_s
/* The entry in the palette CLUT */
typedef struct
{
uint16_t i_id;
uint8_t i_version_number;
uint8_t i_coding_method;
vlc_bool_t b_non_modify_color;
dvbsub_image_t *topfield;
dvbsub_image_t *bottomfield;
struct dvbsub_object_s *p_next;
uint8_t Y;
uint8_t Cr;
uint8_t Cb;
uint8_t T;
} dvbsub_object_t;
} dvbsub_color_t;
/* The object definition gives the position of the object in a region */
typedef struct dvbsub_regiondef_s
/* */
typedef struct dvbsub_clut_s
{
uint16_t i_id;
uint16_t i_x;
uint16_t i_y;
uint8_t i_id;
uint8_t i_version;
dvbsub_color_t c_2b[4];
dvbsub_color_t c_4b[16];
dvbsub_color_t c_8b[256];
} dvbsub_regiondef_t;
struct dvbsub_clut_s *p_next;
} dvbsub_clut_t;
/* The Region is an aera on the image
* with a list of the object definitions associated and a CLUT */
typedef struct dvbsub_region_s
{
uint8_t i_id;
uint8_t i_version_number;
vlc_bool_t b_fill;
uint16_t i_x;
uint16_t i_y;
uint16_t i_width;
uint16_t i_height;
uint8_t i_level_comp;
uint8_t i_depth;
uint8_t i_clut;
uint8_t i_8bp_code;
uint8_t i_4bp_code;
uint8_t i_2bp_code;
int i_object_defs;
dvbsub_objectdef_t *p_object_defs;
struct dvbsub_region_s *p_next;
int i_id;
int i_version;
int i_x;
int i_y;
int i_width;
int i_height;
int i_level_comp;
int i_depth;
int i_clut;
} dvbsub_region_t;
uint8_t *p_pixbuf;
/* The page defines the list of regions */
typedef struct
{
uint16_t i_id;
uint8_t i_timeout;
uint8_t i_state;
uint8_t i_version_number;
int i_object_defs;
dvbsub_objectdef_t *p_object_defs;
uint8_t i_region_defs;
dvbsub_regiondef_t *p_region_defs;
struct dvbsub_region_s *p_next;
} dvbsub_page_t;
} dvbsub_region_t;
/* The entry in the palette CLUT */
typedef struct
/* The object definition gives the position of the object in a region */
typedef struct dvbsub_regiondef_s
{
uint8_t Y;
uint8_t Cr;
uint8_t Cb;
uint8_t T;
int i_id;
int i_x;
int i_y;
} dvbsub_color_t;
} dvbsub_regiondef_t;
/* */
/* The page defines the list of regions */
typedef struct
{
uint8_t i_id;
uint8_t i_version_number;
dvbsub_color_t c_2b[4];
dvbsub_color_t c_4b[16];
dvbsub_color_t c_8b[256];
int i_id;
int i_timeout;
int i_state;
int i_version;
} dvbsub_clut_t;
int i_region_defs;
dvbsub_regiondef_t *p_region_defs;
} dvbsub_page_t;
struct decoder_sys_t
{
......@@ -199,9 +158,7 @@ struct decoder_sys_t
dvbsub_page_t *p_page;
dvbsub_region_t *p_regions;
dvbsub_object_t *p_objects;
dvbsub_clut_t *p_clut[256];
dvbsub_clut_t *p_cluts;
dvbsub_clut_t default_clut;
};
......@@ -241,14 +198,12 @@ static void decode_page_composition( decoder_t *, bs_t * );
static void decode_region_composition( decoder_t *, bs_t * );
static void decode_object( decoder_t *, bs_t * );
static void decode_clut( decoder_t *, bs_t * );
static void free_objects( decoder_t * );
static void free_all( decoder_t * );
static subpicture_t *render( decoder_t * );
static void default_clut_init( decoder_t * );
static subpicture_t *render( decoder_t * );
/*****************************************************************************
* Open: probe the decoder and return score
*****************************************************************************
......@@ -259,7 +214,6 @@ static int Open( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t *) p_this;
decoder_sys_t *p_sys;
int i;
if( p_dec->fmt_in.i_codec != VLC_FOURCC('d','v','b','s') )
{
......@@ -268,14 +222,14 @@ static int Open( vlc_object_t *p_this )
p_dec->pf_decode_sub = Decode;
p_sys = p_dec->p_sys = malloc( sizeof(decoder_sys_t) );
memset( p_sys, 0, sizeof(decoder_sys_t) );
p_sys->i_pts = 0;
p_sys->i_id = p_dec->fmt_in.subs.dvb.i_id & 0xFFFF;
p_sys->i_ancillary_id = p_dec->fmt_in.subs.dvb.i_id >> 16;
p_sys->p_page = NULL;
p_sys->p_regions = NULL;
p_sys->p_objects = NULL;
for( i = 0; i < 256; i++ ) p_sys->p_clut[i] = NULL;
p_sys->p_cluts = NULL;
p_sys->p_page = NULL;
es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_FOURCC( 'd','v','b','s' ) );
......@@ -519,32 +473,41 @@ static void decode_clut( decoder_t *p_dec, bs_t *s )
uint16_t i_segment_length;
uint16_t i_processed_length;
dvbsub_clut_t *p_clut;
uint8_t i_clut_id;
uint8_t i_version_number;
int i_id, i_version;
i_segment_length = bs_read( s, 16 );
i_clut_id = bs_read( s, 8 );
i_version_number = bs_read( s, 4 );
i_id = bs_read( s, 8 );
i_version = bs_read( s, 4 );
/* Check if we already have this clut */
for( p_clut = p_sys->p_cluts; p_clut != NULL; p_clut = p_clut->p_next )
{
if( p_clut->i_id == i_id ) break;
}
/* Check that this id doesn't not already exist with the same version
* number and allocate memory if necessary */
if( p_sys->p_clut[i_clut_id] != NULL &&
p_sys->p_clut[i_clut_id]->i_version_number == i_version_number )
/* Check version number */
if( p_clut && p_clut->i_version == i_version )
{
/* Nothing to do */
bs_skip( s, 8 * i_segment_length - 12 );
bs_skip( s, 8 * i_segment_length - 12 );
return;
}
if( !p_sys->p_clut[i_clut_id] )
if( !p_clut )
{
p_sys->p_clut[i_clut_id] = malloc( sizeof(dvbsub_clut_t) );
#ifdef DEBUG_DVBSUB
msg_Dbg( p_dec, "new clut: %i", i_id );
#endif
p_clut = malloc( sizeof(dvbsub_clut_t) );
p_clut->p_next = p_sys->p_cluts;
p_sys->p_cluts = p_clut;
}
p_clut = p_sys->p_clut[i_clut_id];
/* TODO: initialize to default clut */
/* We don't have this version of the CLUT: Parse it */
p_clut->i_version_number = i_version_number;
p_clut->i_version = i_version;
p_clut->i_id = i_id;
bs_skip( s, 4 ); /* Reserved bits */
i_processed_length = 2;
while( i_processed_length < i_segment_length )
......@@ -616,17 +579,13 @@ static void decode_clut( decoder_t *p_dec, bs_t *s )
static void decode_page_composition( decoder_t *p_dec, bs_t *s )
{
decoder_sys_t *p_sys = p_dec->p_sys;
unsigned int i_version_number;
unsigned int i_state;
unsigned int i_segment_length;
uint8_t i_timeout;
unsigned int i;
int i_version, i_state, i_segment_length, i_timeout, i;
/* A page is composed by one or more region */
/* A page is composed by 0 or more region */
i_segment_length = bs_read( s, 16 );
i_timeout = bs_read( s, 8 );
i_version_number = bs_read( s, 4 );
i_version = bs_read( s, 4 );
i_state = bs_read( s, 2 );
bs_skip( s, 2 ); /* Reserved */
......@@ -640,24 +599,21 @@ static void decode_page_composition( decoder_t *p_dec, bs_t *s )
}
else if( !p_sys->p_page && i_state != DVBSUB_PCS_STATE_ACQUISITION )
{
#ifdef DEBUG_DVBSUB
/* Not a full PCS, we need to wait for one */
msg_Dbg( p_dec, "didn't receive an acquisition page yet" );
bs_skip( s, 8 * (i_segment_length - 2) );
return;
#endif
}
if( i_state == DVBSUB_PCS_STATE_ACQUISITION )
{
#ifdef DEBUG_DVBSUB
if( i_state == DVBSUB_PCS_STATE_ACQUISITION )
msg_Dbg( p_dec, "acquisition page composition" );
#endif
/* Make sure we clean up regularly our objects list.
* Is it the best place to do this ? */
free_objects( p_dec );
}
/* Check version number */
if( p_sys->p_page &&
p_sys->p_page->i_version_number == i_version_number )
if( p_sys->p_page && p_sys->p_page->i_version == i_version )
{
bs_skip( s, 8 * (i_segment_length - 2) );
return;
......@@ -671,11 +627,14 @@ static void decode_page_composition( decoder_t *p_dec, bs_t *s )
if( !p_sys->p_page )
{
#ifdef DEBUG_DVBSUB
msg_Dbg( p_dec, "new page" );
#endif
/* Allocate a new page */
p_sys->p_page = malloc( sizeof(dvbsub_page_t) );
}
p_sys->p_page->i_version_number = i_version_number;
p_sys->p_page->i_version = i_version;
p_sys->p_page->i_timeout = i_timeout;
/* Number of regions */
......@@ -704,63 +663,93 @@ static void decode_region_composition( decoder_t *p_dec, bs_t *s )
{
decoder_sys_t *p_sys = p_dec->p_sys;
dvbsub_region_t *p_region, **pp_region = &p_sys->p_regions;
int i_segment_length;
int i_processed_length;
int i_region_id;
int i_version_number;
int i_segment_length, i_processed_length, i_id, i_version;
int i_width, i_height, i_level_comp, i_depth, i_clut;
int i_8_bg, i_4_bg, i_2_bg;
vlc_bool_t b_fill;
i_segment_length = bs_read( s, 16 );
i_region_id = bs_read( s, 8 );
i_version_number = bs_read( s, 4 );
i_id = bs_read( s, 8 );
i_version = bs_read( s, 4 );
/* Check if we already have this region */
for( p_region = p_sys->p_regions; p_region != NULL;
p_region = p_region->p_next )
{
pp_region = &p_region->p_next;
if( p_region->i_id == i_region_id ) break;
if( p_region->i_id == i_id ) break;
}
/* Check version number */
if( p_region &&
p_region->i_version_number == i_version_number )
if( p_region && p_region->i_version == i_version )
{
bs_skip( s, 8 * (i_segment_length - 1) - 4 );
bs_skip( s, 8 * (i_segment_length - 1) - 4 );
return;
}
else if( p_region )
{
if( p_region->i_object_defs )
free( p_region->p_object_defs );
}
if( !p_region )
{
#ifdef DEBUG_DVBSUB
msg_Dbg( p_dec, "new region: %i", i_region_id );
msg_Dbg( p_dec, "new region: %i", i_id );
#endif
p_region = *pp_region = malloc( sizeof(dvbsub_region_t) );
memset( p_region, 0, sizeof(dvbsub_region_t) );
p_region->p_object_defs = NULL;
p_region->p_pixbuf = NULL;
p_region->p_next = NULL;
}
/* Region attributes */
p_region->i_id = i_region_id;
p_region->i_version_number = i_version_number;
p_region->b_fill = bs_read( s, 1 );
p_region->i_id = i_id;
p_region->i_version = i_version;
b_fill = bs_read( s, 1 );
bs_skip( s, 3 ); /* Reserved */
p_region->i_width = bs_read( s, 16 );
p_region->i_height = bs_read( s, 16 );
p_region->i_level_comp = bs_read( s, 3 );
p_region->i_depth = bs_read( s, 3 );
i_width = bs_read( s, 16 );
i_height = bs_read( s, 16 );
i_level_comp = bs_read( s, 3 );
i_depth = bs_read( s, 3 );
bs_skip( s, 2 ); /* Reserved */
p_region->i_clut = bs_read( s, 8 );
p_region->i_8bp_code = bs_read( s, 8 );
p_region->i_4bp_code = bs_read( s, 4 );
p_region->i_2bp_code = bs_read( s, 2 );
i_clut = bs_read( s, 8 );
i_8_bg = bs_read( s, 8 );
i_4_bg = bs_read( s, 4 );
i_2_bg = bs_read( s, 2 );
bs_skip( s, 2 ); /* Reserved */
p_region->p_object_defs = NULL;
p_region->i_object_defs = 0;
/* Extra sanity checks */
if( p_region->i_width != i_width || p_region->i_height != i_height )
{
if( p_region->p_pixbuf )
{
msg_Dbg( p_dec, "region size changed (not allowed)" );
free( p_region->p_pixbuf );
}
p_region->p_pixbuf = malloc( i_height * i_width );
b_fill = VLC_TRUE;
}
if( p_region->i_depth != i_depth ||
p_region->i_level_comp != i_level_comp || p_region->i_clut != i_clut )
{
msg_Dbg( p_dec, "region parameters changed (not allowed)" );
}
/* Erase background of region */
if( b_fill )
{
int i_background = (p_region->i_depth == 1) ? i_2_bg :
(p_region->i_depth == 2) ? i_4_bg : i_8_bg;
memset( p_region->p_pixbuf, i_background, i_width * i_height );
}
p_region->i_width = i_width;
p_region->i_height = i_height;
p_region->i_level_comp = i_level_comp;
p_region->i_depth = i_depth;
p_region->i_clut = i_clut;
/* List of objects in the region */
i_processed_length = 10;
while( i_processed_length < i_segment_length )
......@@ -777,7 +766,7 @@ static void decode_region_composition( decoder_t *p_dec, bs_t *s )
p_obj = &p_region->p_object_defs[p_region->i_object_defs - 1];
p_obj->i_id = bs_read( s, 16 );
p_obj->i_type = bs_read( s, 2 );
p_obj->i_provider = bs_read( s, 2 );
bs_skip( s, 2 ); /* Provider */
p_obj->i_x = bs_read( s, 12 );
bs_skip( s, 4 ); /* Reserved */
p_obj->i_y = bs_read( s, 12 );
......@@ -794,78 +783,84 @@ static void decode_region_composition( decoder_t *p_dec, bs_t *s )
}
}
static dvbsub_image_t *dvbsub_parse_pdata( decoder_t *, bs_t *, uint16_t );
static uint16_t dvbsub_pdata2bpp( bs_t *, uint16_t *, dvbsub_image_t *, int );
static uint16_t dvbsub_pdata4bpp( bs_t *, uint16_t *, dvbsub_image_t *, int );
static uint16_t dvbsub_pdata8bpp( bs_t *, uint16_t *, dvbsub_image_t *, int );
static void dvbsub_render_pdata( decoder_t *, dvbsub_region_t *, int, int,
uint8_t *, int );
static void dvbsub_pdata2bpp( bs_t *, uint8_t *, int * );
static void dvbsub_pdata4bpp( bs_t *, uint8_t *, int * );
static void dvbsub_pdata8bpp( bs_t *, uint8_t *, int * );
static void decode_object( decoder_t *p_dec, bs_t *s )
{
decoder_sys_t *p_sys = p_dec->p_sys;
dvbsub_object_t *p_obj, **pp_obj = &p_sys->p_objects;
int i_segment_length;
int i_version_number;
int i_coding_method;
int i_obj_id;
i_segment_length = bs_read( s, 16 );
i_obj_id = bs_read( s, 16 );
i_version_number = bs_read( s, 4 );
i_coding_method = bs_read( s, 2 );
decoder_sys_t *p_sys = p_dec->p_sys;
dvbsub_region_t *p_region;
int i_segment_length, i_coding_method, i_version, i_id, i;
vlc_bool_t b_non_modify_color;
i_segment_length = bs_read( s, 16 );
i_id = bs_read( s, 16 );
i_version = bs_read( s, 4 );
i_coding_method = bs_read( s, 2 );
if( i_coding_method )
{
/* TODO: DVB subtitling as characters */
msg_Dbg( p_dec, "DVB subtitling as characters is not handled!" );
bs_skip( s, 8 * (i_segment_length - 2) - 6 );
bs_skip( s, 8 * (i_segment_length - 2) - 6 );
return;
}
/* Check if we already have this region */
for( p_obj = p_sys->p_objects; p_obj != NULL; p_obj = p_obj->p_next )
/* Check if the object needs to be rendered in at least one
* of the regions */
for( p_region = p_sys->p_regions; p_region != NULL;
p_region = p_region->p_next )
{
pp_obj = &p_obj->p_next;
if( p_obj->i_id == i_obj_id ) break;
}
for( i = 0; i < p_region->i_object_defs; i++ )
if( p_region->p_object_defs[i].i_id == i_id ) break;
/* Check version number */
if( p_obj && p_obj->i_version_number == i_version_number )
{
bs_skip( s, 8 * (i_segment_length - 2) - 6 );
return;
if( i != p_region->i_object_defs ) break;
}
else if( p_obj )
if( !p_region )
{
/* Clean structure */
bs_skip( s, 8 * (i_segment_length - 2) - 6 );
return;
}
if( !p_obj )
{
#ifdef DEBUG_DVBSUB
msg_Dbg( p_dec, "new object: %i", i_obj_id );
msg_Dbg( p_dec, "new object: %i", i_id );
#endif
p_obj = *pp_obj = malloc( sizeof(dvbsub_object_t) );
p_obj->p_next = NULL;
}
p_obj->i_id = i_obj_id;
p_obj->i_version_number = i_version_number;
p_obj->i_coding_method = i_coding_method;
p_obj->b_non_modify_color = bs_read( s, 1 );
b_non_modify_color = bs_read( s, 1 );
bs_skip( s, 1 ); /* Reserved */
if( p_obj->i_coding_method == 0x00 )
if( i_coding_method == 0x00 )
{
uint16_t i_topfield_length;
uint16_t i_bottomfield_length;
int i_topfield, i_bottomfield;
uint8_t *p_topfield, *p_bottomfield;
i_topfield = bs_read( s, 16 );
i_bottomfield = bs_read( s, 16 );
p_topfield = s->p_start + bs_pos( s ) / 8;
p_bottomfield = p_topfield + i_topfield;
i_topfield_length = bs_read( s, 16 );
i_bottomfield_length = bs_read( s, 16 );
for( p_region = p_sys->p_regions; p_region != NULL;
p_region = p_region->p_next )
{
for( i = 0; i < p_region->i_object_defs; i++ )
{
if( p_region->p_object_defs[i].i_id != i_id ) continue;
dvbsub_render_pdata( p_dec, p_region,
p_region->p_object_defs[i].i_x,
p_region->p_object_defs[i].i_y,
p_topfield, i_topfield );
dvbsub_render_pdata( p_dec, p_region,
p_region->p_object_defs[i].i_x,
p_region->p_object_defs[i].i_y + 1,
p_bottomfield, i_bottomfield );
}
}
p_obj->topfield =
dvbsub_parse_pdata( p_dec, s, i_topfield_length );
p_obj->bottomfield =
dvbsub_parse_pdata( p_dec, s, i_bottomfield_length );
bs_skip( s, (i_topfield + i_bottomfield) * 8 );
/* Check word-alignement */
bs_align( s );
......@@ -877,139 +872,92 @@ static void decode_object( decoder_t *p_dec, bs_t *s )
}
#ifdef DEBUG_DVBSUB
msg_Dbg( p_dec, "end object: %i", i_obj_id );
msg_Dbg( p_dec, "end object: %i", i_id );
#endif
}
static dvbsub_image_t* dvbsub_parse_pdata( decoder_t *p_dec, bs_t *s,
uint16_t length )
static void dvbsub_render_pdata( decoder_t *p_dec, dvbsub_region_t *p_region,
int i_x, int i_y,
uint8_t *p_field, int i_field )
{
dvbsub_image_t* p_image;
uint16_t i_processed_length = 0;
uint16_t i_lines = 0;
uint16_t i_cols_last = 0;
p_image = malloc( sizeof(dvbsub_image_t) );
p_image->p_last = p_image->p_codes = NULL;
uint8_t *p_pixbuf = p_region->p_pixbuf + i_y * p_region->i_width;
bs_t bs;
int i_offset = 0;
memset( p_image->i_cols, 0, 576 * sizeof(uint16_t) );
bs_init( &bs, p_field, i_field );
/* Let's parse it a first time to determine the size of the buffer */
while( i_processed_length < length )
while( !bs_eof( &bs ) )
{
i_processed_length++;
switch( bs_read( s, 8 ) )
switch( bs_read( &bs, 8 ) )
{
case 0x10:
i_processed_length +=
dvbsub_pdata2bpp( s, &p_image->i_cols[i_lines],
p_image, length - i_processed_length );
break;
case 0x11:
i_processed_length +=
dvbsub_pdata4bpp( s, &p_image->i_cols[i_lines],
p_image, length - i_processed_length );
break;
case 0x12:
i_processed_length +=
dvbsub_pdata8bpp( s, &p_image->i_cols[i_lines],
p_image, length - i_processed_length );
break;
case 0x20:
case 0x21:
case 0x22:
/* We don't use map tables */
break;
case 0xf0:
i_lines++; /* End of line code */
break;
case 0x10:
dvbsub_pdata2bpp( &bs, p_pixbuf + i_x, &i_offset );
break;
case 0x11:
dvbsub_pdata4bpp( &bs, p_pixbuf + i_x, &i_offset );
break;
case 0x12:
dvbsub_pdata8bpp( &bs, p_pixbuf + i_x, &i_offset );
break;
case 0x20:
case 0x21:
case 0x22:
/* We don't use map tables */
break;
case 0xf0:
p_pixbuf += 2*p_region->i_width; /* End of line code */
i_offset = 0;
break;
}
}
p_image->i_rows = i_lines;
p_image->i_cols[i_lines] = i_cols_last;
return p_image;
}
static void add_rle_code( dvbsub_image_t *p, uint16_t num, uint8_t color,
int i_bpp )
{
if( p->p_last != NULL )
{
p->p_last->p_next = malloc( sizeof(dvbsub_rle_t) );
p->p_last = p->p_last->p_next;
}
else
{
p->p_codes = malloc( sizeof(dvbsub_rle_t) );
p->p_last = p->p_codes;
}
p->p_last->i_num = num;
p->p_last->i_color_code = color;
p->p_last->i_bpp = i_bpp;
p->p_last->p_next = NULL;
}
static uint16_t dvbsub_pdata2bpp( bs_t *s, uint16_t* p,
dvbsub_image_t* p_image, int i_length )
static void dvbsub_pdata2bpp( bs_t *s, uint8_t *p, int *pi_off )
{
uint16_t i_processed = 0;
vlc_bool_t b_stop = 0;
uint16_t i_count = 0;
uint8_t i_color = 0;
while( !b_stop && i_processed/8 < i_length )
while( !b_stop && !bs_eof( s ) )
{
i_processed += 2;
if( (i_color = bs_read( s, 2 )) != 0x00 )
{
(*p)++;
/* Add 1 pixel */
add_rle_code( p_image, 1, i_color, 2 );
p[*pi_off] = i_color;
(*pi_off)++;
}
else
{
i_processed++;
if( bs_read( s, 1 ) == 0x01 ) // Switch1
{
i_count = 3 + bs_read( s, 3 );
(*p) += i_count ;
i_color = bs_read( s, 2 );
add_rle_code( p_image, i_count, i_color, 2 );
i_processed += 5;
memset( p + *pi_off, i_color, i_count );
(*pi_off) += i_count;
}
else
{
i_processed++;
if( bs_read( s, 1 ) == 0x00 ) //Switch2
{
i_processed += 2;
switch( bs_read( s, 2 ) ) //Switch3
{
case 0x00:
b_stop=1;
break;
case 0x01:
(*p) += 2 ;
add_rle_code( p_image, 2, 0, 2 );
memset( p + *pi_off, 0, 2 );
(*pi_off) += 2;
break;
case 0x02:
i_count = 12 + bs_read( s, 4 );
i_color = bs_read( s, 2 );
(*p) += i_count;
i_processed += 6;
add_rle_code( p_image, i_count, i_color, 2 );
memset( p + *pi_off, i_color, i_count );
(*pi_off) += i_count;
break;
case 0x03:
i_count = 29 + bs_read( s, 8 );
i_color = bs_read( s, 2 );
(*p) += i_count;
i_processed += 10;
add_rle_code( p_image, i_count, i_color, 2 );
memset( p + *pi_off, i_color, i_count );
(*pi_off) += i_count;
break;
default:
break;
......@@ -1017,35 +965,30 @@ static uint16_t dvbsub_pdata2bpp( bs_t *s, uint16_t* p,
}
else
{
(*p)++;
add_rle_code( p_image, 1, 0, 2 ); /* 1 pixel color 0 */
/* 1 pixel color 0 */
p[*pi_off] = 0;
(*pi_off)++;
}
}
}
}
bs_align( s );
return ( i_processed + 7 ) / 8;
}
static uint16_t dvbsub_pdata4bpp( bs_t *s, uint16_t* p,
dvbsub_image_t* p_image, int i_length )
static void dvbsub_pdata4bpp( bs_t *s, uint8_t* p, int *pi_off )
{
uint16_t i_processed = 0;
vlc_bool_t b_stop = 0;
uint16_t i_count = 0;
uint8_t i_color = 0;
while( !b_stop && i_processed/8 < i_length )
while( !b_stop && !bs_eof( s ) )
{
if( (i_color = bs_read( s, 4 )) != 0x00 )
{
(*p)++;
i_processed+=4;
/* Add 1 pixel */
add_rle_code( p_image, 1, i_color, 4 );
p[*pi_off] = i_color;
(*pi_off)++;
}
else
{
......@@ -1054,15 +997,14 @@ static uint16_t dvbsub_pdata4bpp( bs_t *s, uint16_t* p,
if( bs_show( s, 3 ) != 0x00 )
{
i_count = 2 + bs_read( s, 3 );
(*p) += i_count ;
add_rle_code( p_image, i_count, 0x00, 4 );
memset( p + *pi_off, 0, i_count );
(*pi_off) += i_count;
}
else
{
bs_skip( s, 3 );
b_stop=1;
}
i_processed += 8;
}
else
{
......@@ -1070,37 +1012,32 @@ static uint16_t dvbsub_pdata4bpp( bs_t *s, uint16_t* p,
{
i_count = 4 + bs_read( s, 2 );
i_color = bs_read( s, 4 );
(*p) += i_count;
i_processed += 12;
add_rle_code( p_image, i_count, i_color, 4 );
memset( p + *pi_off, i_color, i_count );
(*pi_off) += i_count;
}
else
{
switch ( bs_read( s, 2 ) ) //Switch3
{
case 0x0:
(*p)++;
i_processed += 8;
add_rle_code( p_image, 1, 0x00, 4 );
memset( p + *pi_off, 0, 1 );
(*pi_off) += 1;
break;
case 0x1:
(*p)+=2;
i_processed += 8;
add_rle_code( p_image, 2, 0x00, 4 );
memset( p + *pi_off, 0, 2 );
(*pi_off) += 2;
break;
case 0x2:
i_count = 9 + bs_read( s, 4 );
i_color = bs_read( s, 4 );
(*p)+= i_count;
i_processed += 16;
add_rle_code( p_image, i_count, i_color, 4 );
memset( p + *pi_off, i_color, i_count );
(*pi_off) += i_count;
break;
case 0x3:
i_count= 25 + bs_read( s, 8 );
i_color = bs_read( s, 4 );
(*p)+= i_count;
i_processed += 20;
add_rle_code( p_image, i_count, i_color, 4 );
memset( p + *pi_off, i_color, i_count );
(*pi_off) += i_count;
break;
}
}
......@@ -1109,131 +1046,88 @@ static uint16_t dvbsub_pdata4bpp( bs_t *s, uint16_t* p,
}
bs_align( s );
return ( i_processed + 7 ) / 8 ;
}
static uint16_t dvbsub_pdata8bpp( bs_t *s, uint16_t* p,
dvbsub_image_t* p_image, int i_length )
static void dvbsub_pdata8bpp( bs_t *s, uint8_t* p, int *pi_off )
{
uint16_t i_processed = 0;
vlc_bool_t b_stop = 0;
uint16_t i_count = 0;
uint8_t i_color = 0;
while( !b_stop && i_processed/8 < i_length )
while( !b_stop && !bs_eof( s ) )
{
i_processed += 8;
if( (i_color = bs_read( s, 8 )) != 0x00 )
{
(*p)++;
/* Add 1 pixel */
add_rle_code( p_image, 1, i_color, 8 );
p[*pi_off] = i_color;
(*pi_off)++;
}
else
{
i_processed++;
if( bs_read( s, 1 ) == 0x00 ) // Switch1
{
if( bs_show( s, 7 ) != 0x00 )
{
i_count = bs_read( s, 7 );
(*p) += i_count ;
add_rle_code( p_image, i_count, 0x00, 8 );
memset( p + *pi_off, 0, i_count );
(*pi_off) += i_count;
}
else
{
bs_skip( s, 7 );
b_stop = 1;
}
i_processed += 7;
}
else
{
i_count = bs_read( s, 7 );
(*p) += i_count ;
i_color = bs_read( s, 8 );
add_rle_code( p_image, i_count, i_color, 8 );
i_processed += 15;
memset( p + *pi_off, i_color, i_count );
(*pi_off) += i_count;
}
}
}
bs_align( s );
return ( i_processed + 7 ) / 8 ;
}
static void free_image( dvbsub_image_t *p_i )
{
dvbsub_rle_t *p1;
dvbsub_rle_t *p2 = NULL;
for( p1 = p_i->p_codes; p1 != NULL; p1 = p2 )
{
p2 = p1->p_next;
free( p1 );
p1 = NULL;
}
free( p_i );
}
static void free_objects( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
dvbsub_object_t *p_obj, *p_obj_next;
for( p_obj = p_sys->p_objects; p_obj != NULL; p_obj = p_obj_next )
{
p_obj_next = p_obj->p_next;
free_image( p_obj->topfield );
free_image( p_obj->bottomfield );
free( p_obj );
}
p_sys->p_objects = NULL;
}
static void free_all( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
dvbsub_region_t *p_reg, *p_reg_next;
int i;
dvbsub_clut_t *p_clut, *p_clut_next;
for( i = 0; i < 256; i++ )
for( p_clut = p_sys->p_cluts; p_clut != NULL; p_clut = p_clut_next )
{
if( p_sys->p_clut[i] ) free( p_sys->p_clut[i] );
p_sys->p_clut[i] = NULL;
}
if( p_sys->p_page )
{
if( p_sys->p_page->i_region_defs )
free( p_sys->p_page->p_region_defs );
free( p_sys->p_page );
p_sys->p_page = NULL;
p_clut_next = p_clut->p_next;
free( p_clut );
}
p_sys->p_cluts = NULL;
for( p_reg = p_sys->p_regions; p_reg != NULL; p_reg = p_reg_next )
{
p_reg_next = p_reg->p_next;
if( p_reg->i_object_defs ) free( p_reg->p_object_defs );
if( p_reg->p_pixbuf ) free( p_reg->p_pixbuf );
free( p_reg );
}
p_sys->p_regions = NULL;
free_objects( p_dec );
if( p_sys->p_page )
{
if( p_sys->p_page->i_region_defs )
free( p_sys->p_page->p_region_defs );
free( p_sys->p_page );
}
p_sys->p_page = NULL;
}
static subpicture_t *render( decoder_t *p_dec )
{
decoder_sys_t *p_sys = p_dec->p_sys;
dvbsub_clut_t *p_clut;
dvbsub_rle_t *p_c;
subpicture_t *p_spu;
decoder_sys_t *p_sys = p_dec->p_sys;
subpicture_t *p_spu;
subpicture_region_t **pp_spu_region;
int i, j = 0, i_timeout = 0;
int i, j, i_timeout = 0;
/* Allocate the subpicture internal data. */
p_spu = p_dec->pf_spu_buffer_new( p_dec );
......@@ -1251,11 +1145,12 @@ static subpicture_t *render( decoder_t *p_dec )
{
dvbsub_region_t *p_region;
dvbsub_regiondef_t *p_regiondef;
subpicture_region_t *p_spu_region;
dvbsub_clut_t *p_clut;
dvbsub_color_t *p_color;
subpicture_region_t *p_spu_region;
uint8_t *p_src, *p_dst;
video_format_t fmt;
uint8_t *p_y;
int i_pitch, i_background;
int i_pitch;
i_timeout = p_sys->p_page->i_timeout;
......@@ -1279,6 +1174,17 @@ static subpicture_t *render( decoder_t *p_dec )
continue;
}
/* Find associated CLUT */
for( p_clut = p_sys->p_cluts; p_clut != NULL; p_clut = p_clut->p_next )
{
if( p_region->i_clut == p_clut->i_id ) break;
}
if( !p_clut )
{
msg_Warn( p_dec, "clut %i not found", p_region->i_clut );
p_clut = &p_sys->default_clut;
}
/* Create new SPU region */
memset( &fmt, 0, sizeof(video_format_t) );
fmt.i_chroma = VLC_FOURCC('Y','U','V','P');
......@@ -1298,8 +1204,6 @@ static subpicture_t *render( decoder_t *p_dec )
pp_spu_region = &p_spu_region->p_next;
/* Build palette */
p_clut = p_sys->p_clut[p_region->i_clut];
if( !p_clut ) p_clut = &p_sys->default_clut;
fmt.p_palette->i_entries = p_region->i_depth == 1 ? 4 :
p_region->i_depth == 2 ? 16 : 256;
p_color = (p_region->i_depth == 1) ? p_clut->c_2b :
......@@ -1312,67 +1216,16 @@ static subpicture_t *render( decoder_t *p_dec )
fmt.p_palette->palette[j][3] = 0xff - p_color[j].T;
}
p_y = p_spu_region->picture.Y_PIXELS;
p_src = p_region->p_pixbuf;
p_dst = p_spu_region->picture.Y_PIXELS;
i_pitch = p_spu_region->picture.Y_PITCH;
/* Erase region */
i_background = (p_region->i_depth == 1) ? p_region->i_2bp_code :
(p_region->i_depth == 2) ? p_region->i_4bp_code :
p_region->i_8bp_code;
memset( p_y, i_background, i_pitch * p_region->i_height );
/* Loop on object definitions */
for( j = 0; j < p_region->i_object_defs; j++ )
/* Copy pixel buffer */
for( j = 0; j < p_region->i_height; j++ )
{
dvbsub_object_t *p_object;
dvbsub_objectdef_t *p_objectdef;
uint16_t k, l, x, y;
p_objectdef = &p_region->p_object_defs[j];
#ifdef DEBUG_DVBSUB
msg_Dbg( p_dec, "rendering object %i (%i,%i)", p_objectdef->i_id,
p_objectdef->i_x, p_objectdef->i_y );
#endif
/* Look for the right object */
for( p_object = p_sys->p_objects; p_object != NULL;
p_object = p_object->p_next )
{
if( p_objectdef->i_id == p_object->i_id ) break;
}
if( !p_object )
{
msg_Err( p_dec, "no object founddddd!!!" );
continue;
}
/* Draw SPU region */
for( k = 0, l = 0, p_c = p_object->topfield->p_codes;
p_c; p_c = p_c->p_next )
{
x = l + p_objectdef->i_x;
y = 2 * k + p_objectdef->i_y;
memset( p_y + y * i_pitch + x, p_c->i_color_code, p_c->i_num );
l += p_c->i_num;
if( l >= p_object->topfield->i_cols[k] ) { k++; l = 0; }
if( k >= p_object->topfield->i_rows) break;
}
for( k = 0, l = 0, p_c = p_object->bottomfield->p_codes;
p_c; p_c = p_c->p_next )
{
x = l + p_objectdef->i_x;
y = 2 * k + 1 + p_objectdef->i_y;
memset( p_y + y * i_pitch + x, p_c->i_color_code, p_c->i_num );
l += p_c->i_num;
if( l >= p_object->bottomfield->i_cols[k] ) { k++; l = 0; }
if( k >= p_object->bottomfield->i_rows) break;
}
memcpy( p_dst, p_src, p_region->i_width );
p_src += p_region->i_width;
p_dst += i_pitch;
}
}
......
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