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Commit 31e92569 authored by Gildas Bazin's avatar Gildas Bazin
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* modules/codec/dvbsub.c: improvements to the encoder. Should produce compliant streams now.

parent 41433abd
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Showing with 107 additions and 32 deletions
modules/codec/dvbsub.c
View file @ 31e92569
......@@ -600,7 +600,8 @@ static void decode_page_composition( decoder_t *p_dec, bs_t *s )
#endif
free_all( p_dec );
}
else if( !p_sys->p_page && i_state != DVBSUB_PCS_STATE_ACQUISITION )
else if( !p_sys->p_page && i_state != DVBSUB_PCS_STATE_ACQUISITION &&
i_state != DVBSUB_PCS_STATE_CHANGE )
{
/* Not a full PCS, we need to wait for one */
msg_Dbg( p_dec, "didn't receive an acquisition page yet" );
......@@ -1003,7 +1004,7 @@ static void dvbsub_pdata2bpp( bs_t *s, uint8_t *p, int i_width, int *pi_off )
else
{
/* 1 pixel color 0 */
i_count = 0;
i_count = 1;
}
}
}
......@@ -1290,18 +1291,22 @@ static subpicture_t *render( decoder_t *p_dec )
/*****************************************************************************
* encoder_sys_t : encoder descriptor
*****************************************************************************/
typedef struct encoder_region_t
{
int i_width;
int i_height;
} encoder_region_t;
struct encoder_sys_t
{
unsigned int i_page_ver;
unsigned int i_region_ver;
unsigned int i_clut_ver;
/*
* Input properties
*/
/*
* Common properties
*/
int i_regions;
encoder_region_t *p_regions;
mtime_t i_pts;
};
......@@ -1341,6 +1346,8 @@ static int OpenEncoder( vlc_object_t *p_this )
p_sys->i_page_ver = 0;
p_sys->i_region_ver = 0;
p_sys->i_clut_ver = 0;
p_sys->i_regions = 0;
p_sys->p_regions = 0;
return VLC_SUCCESS;
}
......@@ -1377,9 +1384,29 @@ static block_t *Encode( encoder_t *p_enc, subpicture_t *p_subpic )
bs_write( s, 8, 0xff ); /* End marker */
p_block->i_buffer = bs_pos( s ) / 8;
p_block->i_pts = p_block->i_dts = p_subpic->i_start;
if( !p_subpic->b_ephemer && p_subpic->i_stop )
if( !p_subpic->b_ephemer && p_subpic->i_stop > p_subpic->i_start )
{
block_t *p_block_stop;
p_block->i_length = p_subpic->i_stop - p_subpic->i_start;
/* Send another (empty) subtitle to signal the end of display */
p_block_stop = block_New( p_enc, 64000 );
bs_init( s, p_block_stop->p_buffer, p_block_stop->i_buffer );
bs_write( s, 8, 0x20 ); /* Data identifier */
bs_write( s, 8, 0x0 ); /* Subtitle stream id */
encode_page_composition( p_enc, s, 0 );
bs_write( s, 8, 0x0f ); /* Sync byte */
bs_write( s, 8, DVBSUB_ST_ENDOFDISPLAY ); /* Segment type */
bs_write( s, 16, 1 ); /* Page id */
bs_write( s, 16, 0 ); /* Segment length */
bs_write( s, 8, 0xff ); /* End marker */
p_block_stop->i_buffer = bs_pos( s ) / 8;
p_block_stop->i_pts = p_block_stop->i_dts = p_subpic->i_stop;
block_ChainAppend( &p_block, p_block_stop );
p_block_stop->i_length = 100000;//p_subpic->i_stop - p_subpic->i_start;
}
msg_Dbg( p_enc, "subpicture encoded properly" );
return p_block;
......@@ -1393,6 +1420,7 @@ static void CloseEncoder( vlc_object_t *p_this )
encoder_t *p_enc = (encoder_t *)p_this;
encoder_sys_t *p_sys = p_enc->p_sys;
if( p_sys->i_regions ) free( p_sys->p_regions );
free( p_sys );
}
......@@ -1401,24 +1429,65 @@ static void encode_page_composition( encoder_t *p_enc, bs_t *s,
{
encoder_sys_t *p_sys = p_enc->p_sys;
subpicture_region_t *p_region;
int i_regions;
vlc_bool_t b_mode_change = VLC_FALSE;
int i_regions, i_timeout;
bs_write( s, 8, 0x0f ); /* Sync byte */
bs_write( s, 8, DVBSUB_ST_PAGE_COMPOSITION ); /* Segment type */
bs_write( s, 16, 1 ); /* Page id */
for( i_regions = 0, p_region = p_subpic->p_region; p_region;
p_region = p_region->p_next, i_regions++ );
for( i_regions = 0, p_region = p_subpic ? p_subpic->p_region : 0;
p_region; p_region = p_region->p_next, i_regions++ )
{
if( i_regions >= p_sys->i_regions )
{
encoder_region_t region;
region.i_width = region.i_height = 0;
p_sys->p_regions =
realloc( p_sys->p_regions, sizeof(encoder_region_t) *
(p_sys->i_regions + 1) );
p_sys->p_regions[p_sys->i_regions++] = region;
}
if( p_sys->p_regions[i_regions].i_width <
(int)p_region->fmt.i_visible_width )
{
b_mode_change = VLC_TRUE;
msg_Dbg( p_enc, "region %i width change: %i -> %i",
i_regions, p_sys->p_regions[i_regions].i_width,
p_region->fmt.i_visible_width );
p_sys->p_regions[i_regions].i_width =
p_region->fmt.i_visible_width;
}
if( p_sys->p_regions[i_regions].i_height <
(int)p_region->fmt.i_visible_height )
{
b_mode_change = VLC_TRUE;
msg_Dbg( p_enc, "region %i height change: %i -> %i",
i_regions, p_sys->p_regions[i_regions].i_height,
p_region->fmt.i_visible_height );
p_sys->p_regions[i_regions].i_height =
p_region->fmt.i_visible_height;
}
}
bs_write( s, 16, i_regions * 6 + 2 ); /* Segment length */
bs_write( s, 8, 5 ); /* Timeout */
i_timeout = 0;
if( p_subpic && !p_subpic->b_ephemer &&
p_subpic->i_stop > p_subpic->i_start )
{
i_timeout = (p_subpic->i_stop - p_subpic->i_start) / 1000000;
}
bs_write( s, 8, i_timeout + 15 ); /* Timeout */
bs_write( s, 4, p_sys->i_page_ver++ );
bs_write( s, 2, DVBSUB_PCS_STATE_ACQUISITION );
bs_write( s, 2, b_mode_change ?
DVBSUB_PCS_STATE_CHANGE : DVBSUB_PCS_STATE_ACQUISITION );
bs_write( s, 2, 0 ); /* Reserved */
for( i_regions = 0, p_region = p_subpic->p_region; p_region;
p_region = p_region->p_next, i_regions++ )
for( i_regions = 0, p_region = p_subpic ? p_subpic->p_region : 0;
p_region; p_region = p_region->p_next, i_regions++ )
{
bs_write( s, 8, i_regions );
bs_write( s, 8, 0 ); /* Reserved */
......@@ -1457,7 +1526,8 @@ static void encode_clut( encoder_t *p_enc, bs_t *s, subpicture_t *p_subpic )
bs_write( s, 1, p_pal->i_entries == 256 ); /* 8bit/entry flag */
bs_write( s, 4, 0 ); /* Reserved */
bs_write( s, 1, 1 ); /* Full range flag */
bs_write( s, 8, p_pal->palette[i][0] ); /* Y value */
bs_write( s, 8, p_pal->palette[i][3] ? /* Y value */
(p_pal->palette[i][0] ? p_pal->palette[i][0] : 16) : 0 );
bs_write( s, 8, p_pal->palette[i][1] ); /* Cr value */
bs_write( s, 8, p_pal->palette[i][2] ); /* Cb value */
bs_write( s, 8, 0xff - p_pal->palette[i][3] ); /* T value */
......@@ -1469,39 +1539,44 @@ static void encode_region_composition( encoder_t *p_enc, bs_t *s,
{
encoder_sys_t *p_sys = p_enc->p_sys;
subpicture_region_t *p_region;
int i_regions;
int i_region, i_bg;
for( i_regions = 0, p_region = p_subpic->p_region; p_region;
p_region = p_region->p_next, i_regions++ )
for( i_region = 0, p_region = p_subpic->p_region; p_region;
p_region = p_region->p_next, i_region++ )
{
video_palette_t *p_pal = p_region->fmt.p_palette;
int i_depth = p_pal->i_entries == 4 ? 0x1 :
p_pal->i_entries == 16 ? 0x2 : 0x3;
for( i_bg = 0; i_bg < p_pal->i_entries; i_bg++ )
{
if( !p_pal->palette[i_bg][3] ) break;
}
bs_write( s, 8, 0x0f ); /* Sync byte */
bs_write( s, 8, DVBSUB_ST_REGION_COMPOSITION ); /* Segment type */
bs_write( s, 16, 1 ); /* Page id */
bs_write( s, 16, 10 + 6 ); /* Segment length */
bs_write( s, 8, i_regions );
bs_write( s, 8, i_region );
bs_write( s, 4, p_sys->i_region_ver++ );
/* Region attributes */
bs_write( s, 1, 0 ); /* Fill */
bs_write( s, 1, i_bg < p_pal->i_entries ); /* Fill */
bs_write( s, 3, 0 ); /* Reserved */
bs_write( s, 16, p_region->fmt.i_visible_width );
bs_write( s, 16, p_region->fmt.i_visible_height );
bs_write( s, 16, p_sys->p_regions[i_region].i_width );
bs_write( s, 16, p_sys->p_regions[i_region].i_height );
bs_write( s, 3, i_depth ); /* Region level of compatibility */
bs_write( s, 3, i_depth ); /* Region depth */
bs_write( s, 2, 0 ); /* Reserved */
bs_write( s, 8, 1 ); /* Clut id */
bs_write( s, 8, 0 ); /* region 8bit pixel code */
bs_write( s, 4, 0 ); /* region 4bit pixel code */
bs_write( s, 2, 0 ); /* region 2bit pixel code */
bs_write( s, 8, i_bg ); /* region 8bit pixel code */
bs_write( s, 4, i_bg ); /* region 4bit pixel code */
bs_write( s, 2, i_bg ); /* region 2bit pixel code */
bs_write( s, 2, 0 ); /* Reserved */
/* In our implementation we only have 1 object per region */
bs_write( s, 16, i_regions );
bs_write( s, 16, i_region );
bs_write( s, 2, DVBSUB_OT_BASIC_BITMAP );
bs_write( s, 2, 0 ); /* object provider flag */
bs_write( s, 12, 0 ); /* object horizontal position */
......@@ -1518,12 +1593,12 @@ static void encode_object( encoder_t *p_enc, bs_t *s, subpicture_t *p_subpic )
{
encoder_sys_t *p_sys = p_enc->p_sys;
subpicture_region_t *p_region;
int i_regions;
int i_region;
int i_length_pos, i_update_pos, i_pixel_data_pos;
for( i_regions = 0, p_region = p_subpic->p_region; p_region;
p_region = p_region->p_next, i_regions++ )
for( i_region = 0, p_region = p_subpic->p_region; p_region;
p_region = p_region->p_next, i_region++ )
{
bs_write( s, 8, 0x0f ); /* Sync byte */
bs_write( s, 8, DVBSUB_ST_OBJECT_DATA ); /* Segment type */
......@@ -1531,7 +1606,7 @@ static void encode_object( encoder_t *p_enc, bs_t *s, subpicture_t *p_subpic )
i_length_pos = bs_pos( s );
bs_write( s, 16, 0 ); /* Segment length */
bs_write( s, 16, i_regions ); /* Object id */
bs_write( s, 16, i_region ); /* Object id */
bs_write( s, 4, p_sys->i_region_ver++ );
bs_write( s, 2, 0 ); /* object coding method */
......
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