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* all: ported to new API.

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-> i_rate isn't used for now : it will need to be fixed.
This commit is contained in:
Laurent Aimar 2003-11-22 19:55:47 +00:00
parent 1a80449a5a
commit 82ca25cb19
4 changed files with 311 additions and 359 deletions
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290
modules/codec/spudec/parse.c
View File

@ -2,15 +2,16 @@
* parse.c: SPU parser
*****************************************************************************
* Copyright (C) 2000-2001 VideoLAN
* $Id: parse.c,v 1.13 2003/07/29 22:25:40 gbazin Exp $
* $Id: parse.c,v 1.14 2003/11/22 19:55:47 fenrir Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
* Laurent Aimar <fenrir@via.ecp.fr>
*
* 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
@ -25,19 +26,19 @@
* Preamble
*****************************************************************************/
#include <stdlib.h> /* malloc(), free() */
#include <string.h> /* memcpy(), memset() */
#include <vlc/vlc.h>
#include <vlc/vout.h>
#include <vlc/decoder.h>
#include <vlc/input.h>
#include "spudec.h"
/*****************************************************************************
* Local prototypes.
*****************************************************************************/
static int ParseControlSeq ( spudec_thread_t *, subpicture_t * );
static int ParseRLE ( spudec_thread_t *, subpicture_t *, uint8_t * );
static int ParseControlSeq ( decoder_t *, subpicture_t * );
static int ParseRLE ( decoder_t *, subpicture_t * );
static void DestroySPU ( subpicture_t * );
@ -61,62 +62,20 @@ static inline unsigned int AddNibble( unsigned int i_code,
}
}
/*****************************************************************************
* SyncPacket: get in sync with the stream
*****************************************************************************
* This function makes a few sanity checks and returns 0 if it looks like we
* are at the beginning of a subpicture packet.
*****************************************************************************/
int E_(SyncPacket)( spudec_thread_t *p_spudec )
{
/* Re-align the buffer on an 8-bit boundary */
RealignBits( &p_spudec->bit_stream );
/* The total SPU packet size, often bigger than a PS packet */
p_spudec->i_spu_size = GetBits( &p_spudec->bit_stream, 16 );
/* The RLE stuff size (remove 4 because we just read 32 bits) */
p_spudec->i_rle_size = ShowBits( &p_spudec->bit_stream, 16 ) - 4;
/* If the values we got are a bit strange, skip packet */
if( !p_spudec->i_spu_size
|| ( p_spudec->i_rle_size >= p_spudec->i_spu_size ) )
{
return VLC_EGENERIC;
}
RemoveBits( &p_spudec->bit_stream, 16 );
return VLC_SUCCESS;
}
/*****************************************************************************
* ParsePacket: parse an SPU packet and send it to the video output
*****************************************************************************
* This function parses the SPU packet and, if valid, sends it to the
* video output.
*****************************************************************************/
void E_(ParsePacket)( spudec_thread_t *p_spudec )
void E_(ParsePacket)( decoder_t *p_dec)
{
subpicture_t * p_spu;
uint8_t * p_src;
unsigned int i_offset;
mtime_t i_pts;
decoder_sys_t *p_sys = p_dec->p_sys;
msg_Dbg( p_spudec->p_fifo, "trying to gather a 0x%.2x long subtitle",
p_spudec->i_spu_size );
/* We cannot display a subpicture with no date */
NextPTS( &p_spudec->bit_stream, &i_pts, NULL );
if( i_pts == 0 )
{
msg_Warn( p_spudec->p_fifo, "subtitle without a date" );
return;
}
subpicture_t *p_spu;
/* Allocate the subpicture internal data. */
p_spu = vout_CreateSubPicture( p_spudec->p_vout, MEMORY_SUBPICTURE );
p_spu = vout_CreateSubPicture( p_sys->p_vout, MEMORY_SUBPICTURE );
if( p_spu == NULL )
{
return;
@ -126,17 +85,10 @@ void E_(ParsePacket)( spudec_thread_t *p_spudec )
* expand the RLE stuff so that we won't need to read nibbles later
* on. This will speed things up a lot. Plus, we'll only need to do
* this stupid interlacing stuff once. */
p_spu->p_sys = malloc( sizeof( subpicture_sys_t )
+ p_spudec->i_rle_size * 4 );
if( p_spu->p_sys == NULL )
{
vout_DestroySubPicture( p_spudec->p_vout, p_spu );
return;
}
p_spu->p_sys = malloc( sizeof( subpicture_sys_t ) + 4*p_sys->i_rle_size );
/* Fill the p_spu structure */
vlc_mutex_init( p_spudec->p_fifo, &p_spu->p_sys->lock );
vlc_mutex_init( p_dec, &p_spu->p_sys->lock );
p_spu->pf_render = E_(RenderSPU);
p_spu->pf_destroy = DestroySPU;
@ -151,10 +103,10 @@ void E_(ParsePacket)( spudec_thread_t *p_spudec )
p_spu->p_sys->b_crop = VLC_FALSE;
/* Get display time now. If we do it later, we may miss the PTS. */
p_spu->p_sys->i_pts = i_pts;
p_spu->p_sys->i_pts = p_sys->i_pts;
/* Attach to our input thread */
p_spu->p_sys->p_input = vlc_object_find( p_spudec->p_fifo,
p_spu->p_sys->p_input = vlc_object_find( p_dec,
VLC_OBJECT_INPUT, FIND_PARENT );
if( p_spu->p_sys->p_input )
{
@ -173,70 +125,30 @@ void E_(ParsePacket)( spudec_thread_t *p_spudec )
}
}
/* Allocate the temporary buffer we will parse */
p_src = malloc( p_spudec->i_rle_size );
if( p_src == NULL )
{
msg_Err( p_spudec->p_fifo, "out of memory" );
vout_DestroySubPicture( p_spudec->p_vout, p_spu );
return;
}
/* Get RLE data */
for( i_offset = 0; i_offset < p_spudec->i_rle_size;
i_offset += SPU_CHUNK_SIZE )
{
GetChunk( &p_spudec->bit_stream, p_src + i_offset,
( i_offset + SPU_CHUNK_SIZE < p_spudec->i_rle_size ) ?
SPU_CHUNK_SIZE : p_spudec->i_rle_size - i_offset );
/* Abort subtitle parsing if we were requested to stop */
if( p_spudec->p_fifo->b_die )
{
free( p_src );
vout_DestroySubPicture( p_spudec->p_vout, p_spu );
return;
}
}
#if 0
/* Dump the subtitle info */
intf_WarnHexDump( 5, p_spu->p_sys->p_data, p_spudec->i_rle_size );
#endif
/* Getting the control part */
if( ParseControlSeq( p_spudec, p_spu ) )
if( ParseControlSeq( p_dec, p_spu ) )
{
/* There was a parse error, delete the subpicture */
free( p_src );
vout_DestroySubPicture( p_spudec->p_vout, p_spu );
vout_DestroySubPicture( p_sys->p_vout, p_spu );
return;
}
/* At this point, no more GetBit() command is needed, so we have all
* the data we need to tell whether the subtitle is valid. Thus we
* try to display it and we ignore b_die. */
if( ParseRLE( p_spudec, p_spu, p_src ) )
/* We try to display it */
if( ParseRLE( p_dec, p_spu ) )
{
/* There was a parse error, delete the subpicture */
free( p_src );
vout_DestroySubPicture( p_spudec->p_vout, p_spu );
vout_DestroySubPicture( p_sys->p_vout, p_spu );
return;
}
msg_Dbg( p_spudec->p_fifo, "total size: 0x%x, RLE offsets: 0x%x 0x%x",
p_spudec->i_spu_size,
msg_Dbg( p_dec, "total size: 0x%x, RLE offsets: 0x%x 0x%x",
p_sys->i_spu_size,
p_spu->p_sys->pi_offset[0], p_spu->p_sys->pi_offset[1] );
/* SPU is finished - we can ask the video output to display it */
vout_DisplaySubPicture( p_spudec->p_vout, p_spu );
vout_DisplaySubPicture( p_sys->p_vout, p_spu );
/* TODO: do stuff! */
/* Clean up */
free( p_src );
}
/*****************************************************************************
@ -246,11 +158,12 @@ void E_(ParsePacket)( spudec_thread_t *p_spudec )
* information, coordinates, and so on. For more information on the
* subtitles format, see http://sam.zoy.org/doc/dvd/subtitles/index.html
*****************************************************************************/
static int ParseControlSeq( spudec_thread_t *p_spudec,
subpicture_t * p_spu )
static int ParseControlSeq( decoder_t *p_dec, subpicture_t * p_spu )
{
decoder_sys_t *p_sys = p_dec->p_sys;
/* Our current index in the SPU packet */
unsigned int i_index = p_spudec->i_rle_size + 4;
unsigned int i_index = p_sys->i_rle_size + 4;
/* The next start-of-control-sequence index and the previous one */
unsigned int i_next_seq = 0, i_cur_seq = 0;
@ -267,25 +180,35 @@ static int ParseControlSeq( spudec_thread_t *p_spudec,
do
{
if( (int)i_index >= p_sys->i_spu_size + 1 )
{
/* sanity
* XXX only on test by loop as p_sys->buffer is bigger than needed
* to avoid checking at each access
*/
break;
}
/* If we just read a command sequence, read the next one;
* otherwise, go on with the commands of the current sequence. */
if( i_command == SPU_CMD_END )
{
/* Get the control sequence date */
date = (mtime_t)GetBits( &p_spudec->bit_stream, 16 ) * 11000
date = (mtime_t)GetWBE( &p_sys->buffer[i_index] ) * 11000;
/* FIXME How to access i_rate
* p_spudec->bit_stream.p_pes->i_rate / DEFAULT_RATE;
*/
/* Next offset */
i_cur_seq = i_index;
i_next_seq = GetBits( &p_spudec->bit_stream, 16 );
i_next_seq = GetWBE( &p_sys->buffer[i_index+2] );
/* Skip what we just read */
i_index += 4;
}
i_command = GetBits( &p_spudec->bit_stream, 8 );
i_index++;
i_command = p_sys->buffer[i_index++];
switch( i_command )
{
case SPU_CMD_FORCE_DISPLAY: /* 00 (force displaying) */
@ -305,17 +228,23 @@ static int ParseControlSeq( spudec_thread_t *p_spudec,
case SPU_CMD_SET_PALETTE:
/* 03xxxx (palette) */
if( p_spudec->p_fifo->p_demux_data
&& *(int*)p_spudec->p_fifo->p_demux_data == 0xBeeF )
if( p_dec->p_fifo->p_demux_data
&& *(int*)p_dec->p_fifo->p_demux_data == 0xBeeF )
{
uint32_t i_color;
unsigned int idx[4];
p_spu->p_sys->b_palette = VLC_TRUE;
idx[0] = (p_sys->buffer[i_index+0]>>4)&0x0f;
idx[1] = (p_sys->buffer[i_index+0])&0x0f;
idx[2] = (p_sys->buffer[i_index+1]>>4)&0x0f;
idx[3] = (p_sys->buffer[i_index+1])&0x0f;
for( i = 0; i < 4 ; i++ )
{
i_color = ((uint32_t*)((char*)p_spudec->p_fifo->
p_demux_data + sizeof(int)))[
GetBits(&p_spudec->bit_stream, 4) ];
uint32_t i_color;
i_color = ((uint32_t*)((char*)p_dec->p_fifo->p_demux_data +
sizeof(int)))[idx[i]];
/* FIXME: this job should be done sooner */
p_spu->p_sys->pi_yuv[3-i][0] = (i_color>>16) & 0xff;
@ -323,19 +252,15 @@ static int ParseControlSeq( spudec_thread_t *p_spudec,
p_spu->p_sys->pi_yuv[3-i][2] = (i_color>>8) & 0xff;
}
}
else
{
RemoveBits( &p_spudec->bit_stream, 16 );
}
i_index += 2;
break;
case SPU_CMD_SET_ALPHACHANNEL: /* 04xxxx (alpha channel) */
pi_alpha[3] = GetBits( &p_spudec->bit_stream, 4 );
pi_alpha[2] = GetBits( &p_spudec->bit_stream, 4 );
pi_alpha[1] = GetBits( &p_spudec->bit_stream, 4 );
pi_alpha[0] = GetBits( &p_spudec->bit_stream, 4 );
pi_alpha[3] = (p_sys->buffer[i_index+0]>>4)&0x0f;
pi_alpha[2] = (p_sys->buffer[i_index+0])&0x0f;
pi_alpha[1] = (p_sys->buffer[i_index+1]>>4)&0x0f;
pi_alpha[0] = (p_sys->buffer[i_index+1])&0x0f;
/* Ignore blank alpha palette. Sometimes spurious blank
* alpha palettes are present - dunno why. */
@ -348,31 +273,29 @@ static int ParseControlSeq( spudec_thread_t *p_spudec,
}
else
{
msg_Warn( p_spudec->p_fifo, "ignoring blank alpha palette" );
msg_Warn( p_dec, "ignoring blank alpha palette" );
}
i_index += 2;
break;
case SPU_CMD_SET_COORDINATES: /* 05xxxyyyxxxyyy (coordinates) */
p_spu->i_x = GetBits( &p_spudec->bit_stream, 12 );
p_spu->i_width = GetBits( &p_spudec->bit_stream, 12 )
- p_spu->i_x + 1;
p_spu->i_x = (p_sys->buffer[i_index+0]<<4)|
((p_sys->buffer[i_index+1]>>4)&0x0f);
p_spu->i_width = (((p_sys->buffer[i_index+1]&0x0f)<<8)|
p_sys->buffer[i_index+2]) - p_spu->i_x + 1;
p_spu->i_y = GetBits( &p_spudec->bit_stream, 12 );
p_spu->i_height = GetBits( &p_spudec->bit_stream, 12 )
- p_spu->i_y + 1;
p_spu->i_y = (p_sys->buffer[i_index+3]<<4)|
((p_sys->buffer[i_index+4]>>4)&0x0f);
p_spu->i_height = (((p_sys->buffer[i_index+4]&0x0f)<<8)|
p_sys->buffer[i_index+5]) - p_spu->i_y + 1;
i_index += 6;
break;
case SPU_CMD_SET_OFFSETS: /* 06xxxxyyyy (byte offsets) */
p_spu->p_sys->pi_offset[0] =
GetBits( &p_spudec->bit_stream, 16 ) - 4;
p_spu->p_sys->pi_offset[1] =
GetBits( &p_spudec->bit_stream, 16 ) - 4;
p_spu->p_sys->pi_offset[0] = GetWBE(&p_sys->buffer[i_index+0]) - 4;
p_spu->p_sys->pi_offset[1] = GetWBE(&p_sys->buffer[i_index+2]) - 4;
i_index += 4;
break;
@ -380,13 +303,12 @@ static int ParseControlSeq( spudec_thread_t *p_spudec,
break;
default: /* xx (unknown command) */
msg_Err( p_spudec->p_fifo, "unknown command 0x%.2x",
i_command );
msg_Err( p_dec, "unknown command 0x%.2x", i_command );
return VLC_EGENERIC;
}
/* We need to check for quit commands here */
if( p_spudec->p_fifo->b_die )
if( p_dec->b_die )
{
return VLC_EGENERIC;
}
@ -396,55 +318,41 @@ static int ParseControlSeq( spudec_thread_t *p_spudec,
/* Check that the next sequence index matches the current one */
if( i_next_seq != i_cur_seq )
{
msg_Err( p_spudec->p_fifo, "index mismatch (0x%.4x != 0x%.4x)",
i_next_seq, i_cur_seq );
msg_Err( p_dec, "index mismatch (0x%.4x != 0x%.4x)",
i_next_seq, i_cur_seq );
return VLC_EGENERIC;
}
if( i_index > p_spudec->i_spu_size )
if( (int)i_index > p_sys->i_spu_size )
{
msg_Err( p_spudec->p_fifo, "uh-oh, we went too far (0x%.4x > 0x%.4x)",
i_index, p_spudec->i_spu_size );
msg_Err( p_dec, "uh-oh, we went too far (0x%.4x > 0x%.4x)",
i_index, p_sys->i_spu_size );
return VLC_EGENERIC;
}
if( !p_spu->i_start )
{
msg_Err( p_spudec->p_fifo, "no `start display' command" );
msg_Err( p_dec, "no `start display' command" );
}
if( p_spu->i_stop <= p_spu->i_start && !p_spu->b_ephemer )
{
/* This subtitle will live for 5 seconds or until the next subtitle */
p_spu->i_stop = p_spu->i_start + (mtime_t)500 * 11000
p_spu->i_stop = p_spu->i_start + (mtime_t)500 * 11000;
/* FIXME how to access i_rate ?
* p_spudec->bit_stream.p_pes->i_rate / DEFAULT_RATE;
*/
p_spu->b_ephemer = VLC_TRUE;
}
/* Get rid of padding bytes */
switch( p_spudec->i_spu_size - i_index )
if( p_sys->i_spu_size > (int)i_index + 1 )
{
/* Zero or one padding byte, quite usual */
case 1:
RemoveBits( &p_spudec->bit_stream, 8 );
i_index++;
case 0:
break;
/* More than one padding byte - this is very strange, but
/* Zero or one padding byte, are quite usual
* More than one padding byte - this is very strange, but
* we can deal with it */
default:
msg_Warn( p_spudec->p_fifo,
"%i padding bytes, we usually get 0 or 1 of them",
p_spudec->i_spu_size - i_index );
while( i_index < p_spudec->i_spu_size )
{
RemoveBits( &p_spudec->bit_stream, 8 );
i_index++;
}
break;
msg_Warn( p_dec, "%i padding bytes, we usually get 0 or 1 of them",
p_sys->i_spu_size - i_index );
}
/* Successfully parsed ! */
@ -458,9 +366,11 @@ static int ParseControlSeq( spudec_thread_t *p_spudec,
* convenient structure for later decoding. For more information on the
* subtitles format, see http://sam.zoy.org/doc/dvd/subtitles/index.html
*****************************************************************************/
static int ParseRLE( spudec_thread_t *p_spudec,
subpicture_t * p_spu, uint8_t * p_src )
static int ParseRLE( decoder_t *p_dec, subpicture_t * p_spu )
{
decoder_sys_t *p_sys = p_dec->p_sys;
uint8_t *p_src = &p_sys->buffer[4];
unsigned int i_code;
unsigned int i_width = p_spu->i_width;
@ -519,7 +429,7 @@ static int ParseRLE( spudec_thread_t *p_spudec,
else
{
/* We have a boo boo ! */
msg_Err( p_spudec->p_fifo, "unknown RLE code "
msg_Err( p_dec, "unknown RLE code "
"0x%.4x", i_code );
return VLC_EGENERIC;
}
@ -530,7 +440,7 @@ static int ParseRLE( spudec_thread_t *p_spudec,
if( ( (i_code >> 2) + i_x + i_y * i_width ) > i_height * i_width )
{
msg_Err( p_spudec->p_fifo,
msg_Err( p_dec,
"out of bounds, %i at (%i,%i) is out of %ix%i",
i_code >> 2, i_x, i_y, i_width, i_height );
return VLC_EGENERIC;
@ -580,8 +490,8 @@ static int ParseRLE( spudec_thread_t *p_spudec,
/* Check that we didn't go too far */
if( i_x > i_width )
{
msg_Err( p_spudec->p_fifo, "i_x overflowed, %i > %i",
i_x, i_width );
msg_Err( p_dec, "i_x overflowed, %i > %i",
i_x, i_width );
return VLC_EGENERIC;
}
@ -598,9 +508,9 @@ static int ParseRLE( spudec_thread_t *p_spudec,
/* We shouldn't get any padding bytes */
if( i_y < i_height )
{
msg_Err( p_spudec->p_fifo, "padding bytes found in RLE sequence" );
msg_Err( p_spudec->p_fifo, "send mail to <sam@zoy.org> if you "
"want to help debugging this" );
msg_Err( p_dec, "padding bytes found in RLE sequence" );
msg_Err( p_dec, "send mail to <sam@zoy.org> if you "
"want to help debugging this" );
/* Skip them just in case */
while( i_y < i_height )
@ -612,7 +522,7 @@ static int ParseRLE( spudec_thread_t *p_spudec,
return VLC_EGENERIC;
}
msg_Dbg( p_spudec->p_fifo, "valid subtitle, size: %ix%i, position: %i,%i",
msg_Dbg( p_dec, "valid subtitle, size: %ix%i, position: %i,%i",
p_spu->i_width, p_spu->i_height, p_spu->i_x, p_spu->i_y );
#if 0 /* cropping */
@ -679,7 +589,7 @@ static int ParseRLE( spudec_thread_t *p_spudec,
p_spu->p_sys->pi_yuv[i_shade][2] = 0x80;
}
msg_Dbg( p_spudec->p_fifo,
msg_Dbg( p_dec,
"using custom palette (border %i, inner %i, shade %i)",
i_border, i_inner, i_shade );
}

3
modules/codec/spudec/render.c
View File

@ -2,7 +2,7 @@
* render.c : SPU renderer
*****************************************************************************
* Copyright (C) 2000-2001 VideoLAN
* $Id: render.c,v 1.6 2003/10/25 00:49:14 sam Exp $
* $Id: render.c,v 1.7 2003/11/22 19:55:47 fenrir Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
* Rudolf Cornelissen <rag.cornelissen@inter.nl.net>
@ -27,7 +27,6 @@
* Preamble
*****************************************************************************/
#include <stdlib.h> /* malloc(), free() */
#include <string.h> /* memcpy(), memset() */
#include <vlc/vlc.h>
#include <vlc/vout.h>

324
modules/codec/spudec/spudec.c
View File

@ -2,15 +2,16 @@
* spudec.c : SPU decoder thread
*****************************************************************************
* Copyright (C) 2000-2001 VideoLAN
* $Id: spudec.c,v 1.27 2003/11/16 21:07:31 gbazin Exp $
* $Id: spudec.c,v 1.28 2003/11/22 19:55:47 fenrir Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
* Laurent Aimar <fenrir@via.ecp.fr>
*
* 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
@ -25,169 +26,258 @@
* Preamble
*****************************************************************************/
#include <stdlib.h> /* malloc(), free() */
#include <string.h> /* memcpy(), memset() */
#include <vlc/vlc.h>
#include <vlc/vout.h>
#include <vlc/decoder.h>
#include <vlc/input.h>
#include "spudec.h"
/*****************************************************************************
* Local prototypes
*****************************************************************************/
static int OpenDecoder ( vlc_object_t * );
static int RunDecoder ( decoder_fifo_t * );
static int InitThread ( spudec_thread_t * );
static void EndThread ( spudec_thread_t * );
static vout_thread_t *FindVout( spudec_thread_t *);
/*****************************************************************************
* Module descriptor.
*****************************************************************************/
static int DecoderOpen ( vlc_object_t * );
static int PacketizerOpen( vlc_object_t * );
static void Close ( vlc_object_t * );
vlc_module_begin();
set_description( _("DVD subtitles decoder") );
set_capability( "decoder", 50 );
set_callbacks( OpenDecoder, NULL );
set_callbacks( DecoderOpen, Close );
add_submodule();
set_description( _("DVD subtitles packetizer") );
set_capability( "decoder", 50 );
set_callbacks( PacketizerOpen, Close );
vlc_module_end();
/*****************************************************************************
* OpenDecoder: probe the decoder and return score
* Local prototypes
*****************************************************************************/
static vout_thread_t *FindVout( decoder_t *);
static block_t *Reassemble( decoder_t *, block_t ** );
static void Decode ( decoder_t *, block_t ** );
static block_t *Packetize( decoder_t *, block_t ** );
/*****************************************************************************
* DecoderOpen
*****************************************************************************
* Tries to launch a decoder and return score so that the interface is able
* Tries to launch a decoder and return score so that the interface is able
* to chose.
*****************************************************************************/
static int OpenDecoder( vlc_object_t *p_this )
static int DecoderOpen( vlc_object_t *p_this )
{
decoder_t *p_dec = (decoder_t*)p_this;
decoder_t *p_dec = (decoder_t*)p_this;
decoder_sys_t *p_sys;
if( p_dec->fmt_in.i_codec != VLC_FOURCC('s','p','u',' ')
&& p_dec->fmt_in.i_codec != VLC_FOURCC('s','p','u','b') )
if( p_dec->fmt_in.i_codec != VLC_FOURCC( 's','p','u',' ' ) &&
p_dec->fmt_in.i_codec != VLC_FOURCC( 's','p','u','b' ) )
{
return VLC_EGENERIC;
}
p_dec->pf_run = RunDecoder;
p_dec->p_sys = p_sys = malloc( sizeof( decoder_sys_t ) );
p_sys->b_packetizer = VLC_FALSE;
p_sys->i_spu_size = 0;
p_sys->i_spu = 0;
p_sys->p_block = NULL;
p_sys->p_vout = NULL;
es_format_Init( &p_dec->fmt_out, SPU_ES, VLC_FOURCC( 's','p','u',' ' ) );
p_dec->pf_decode_sub = Decode;
p_dec->pf_packetize = Packetize;
return VLC_SUCCESS;
}
/*****************************************************************************
* RunDecoder: this function is called just after the thread is created
* PacketizerOpen
*****************************************************************************
* Tries to launch a decoder and return score so that the interface is able
* to chose.
*****************************************************************************/
static int RunDecoder( decoder_fifo_t * p_fifo )
static int PacketizerOpen( vlc_object_t *p_this )
{
spudec_thread_t * p_spudec;
decoder_t *p_dec = (decoder_t*)p_this;
/* Allocate the memory needed to store the thread's structure */
p_spudec = (spudec_thread_t *)malloc( sizeof(spudec_thread_t) );
if ( p_spudec == NULL )
if( DecoderOpen( p_this ) )
{
msg_Err( p_fifo, "out of memory" );
DecoderError( p_fifo );
return( -1 );
return VLC_EGENERIC;
}
p_dec->p_sys->b_packetizer = VLC_TRUE;
/*
* Initialize the thread properties
*/
p_spudec->p_vout = NULL;
p_spudec->p_fifo = p_fifo;
return VLC_SUCCESS;
}
/*
* Initialize thread and free configuration
*/
p_spudec->p_fifo->b_error = InitThread( p_spudec );
/*****************************************************************************
* 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;
/*
* Main loop - it is not executed if an error occured during
* initialization
*/
while( (!p_spudec->p_fifo->b_die) && (!p_spudec->p_fifo->b_error) )
if( !p_sys->b_packetizer )
{
if( E_(SyncPacket)( p_spudec ) )
/* FIXME check if it's ok to not lock vout */
if( p_sys->p_vout != NULL && p_sys->p_vout->p_subpicture != NULL )
{
continue;
}
subpicture_t * p_subpic;
int i_subpic;
/* Find/Wait for a video output */
p_spudec->p_vout = FindVout( p_spudec );
if( p_spudec->p_vout)
{
E_(ParsePacket)( p_spudec );
vlc_object_release( p_spudec->p_vout );
for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
{
p_subpic = &p_sys->p_vout->p_subpicture[i_subpic];
if( p_subpic != NULL &&
( ( p_subpic->i_status == RESERVED_SUBPICTURE ) ||
( p_subpic->i_status == READY_SUBPICTURE ) ) )
{
vout_DestroySubPicture( p_sys->p_vout, p_subpic );
}
}
}
}
/*
* Error loop
*/
if( p_spudec->p_fifo->b_error )
if( p_sys->p_block )
{
DecoderError( p_spudec->p_fifo );
/* End of thread */
EndThread( p_spudec );
return -1;
block_ChainRelease( p_sys->p_block );
}
/* End of thread */
EndThread( p_spudec );
return 0;
free( p_sys );
}
/*****************************************************************************
* Decode:
*****************************************************************************/
static void Decode ( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_spu = Reassemble( p_dec, pp_block );
if( p_spu )
{
p_sys->i_spu = block_ChainExtract( p_spu, p_sys->buffer, 65536 );
p_sys->i_pts = p_spu->i_pts;
block_ChainRelease( p_spu );
if( ( p_sys->p_vout = FindVout( p_dec ) ) )
{
/* Parse and decode */
E_(ParsePacket)( p_dec );
vlc_object_release( p_sys->p_vout );
}
/* reinit context */
p_sys->i_spu_size = 0;
p_sys->i_rle_size = 0;
p_sys->i_spu = 0;
p_sys->p_block = NULL;
}
}
/*****************************************************************************
* Packetize:
*****************************************************************************/
static block_t *Packetize( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_spu = Reassemble( p_dec, pp_block );
if( p_spu )
{
/* reinit context */
p_sys->i_spu_size = 0;
p_sys->i_rle_size = 0;
p_sys->i_spu = 0;
p_sys->p_block = NULL;
return block_ChainGather( p_spu );
}
return NULL;
}
/*****************************************************************************
* Reassemble:
*****************************************************************************/
static block_t *Reassemble( decoder_t *p_dec, block_t **pp_block )
{
decoder_sys_t *p_sys = p_dec->p_sys;
block_t *p_block;
if( pp_block == NULL || *pp_block == NULL )
{
return NULL;
}
p_block = *pp_block;
*pp_block = NULL;
if( p_sys->i_spu_size <= 0 && ( p_block->i_pts <= 0 || p_block->i_buffer < 4 ) )
{
msg_Dbg( p_dec, "invalid starting packet (size < 4 or pts <=0)" );
block_Release( p_block );
return NULL;
}
block_ChainAppend( &p_sys->p_block, p_block );
p_sys->i_spu += p_block->i_buffer;
if( p_sys->i_spu_size <= 0 )
{
p_sys->i_spu_size = ( p_block->p_buffer[0] << 8 )| p_block->p_buffer[1];
p_sys->i_rle_size = ( ( p_block->p_buffer[2] << 8 )| p_block->p_buffer[3] ) - 4;
msg_Dbg( p_dec, "i_spu_size=%d i_rle=%d", p_sys->i_spu_size, p_sys->i_rle_size );
if( p_sys->i_spu_size <= 0 || p_sys->i_rle_size >= p_sys->i_spu_size )
{
p_sys->i_spu_size = 0;
p_sys->i_rle_size = 0;
p_sys->i_spu = 0;
p_sys->p_block = NULL;
block_Release( p_block );
return NULL;
}
}
if( p_sys->i_spu >= p_sys->i_spu_size )
{
/* We have a complete sub */
block_t *p_ret = p_sys->p_block;
msg_Dbg( p_dec, "SPU packets size=%d should be %d",
p_sys->i_spu, p_sys->i_spu_size );
return p_ret;
}
return NULL;
}
/* following functions are local */
/*****************************************************************************
* InitThread: initialize spu decoder thread
*****************************************************************************
* This function is called from RunThread and performs the second step of the
* initialization. It returns 0 on success. Note that the thread's flag are not
* modified inside this function.
*****************************************************************************/
static int InitThread( spudec_thread_t *p_spudec )
{
int i_ret;
/* Call InitBitstream anyway so p_spudec->bit_stream is in a known
* state before calling CloseBitstream */
i_ret = InitBitstream( &p_spudec->bit_stream, p_spudec->p_fifo,
NULL, NULL );
/* Check for a video output */
p_spudec->p_vout = FindVout( p_spudec );
if( !p_spudec->p_vout )
{
return -1;
}
/* It was just a check */
vlc_object_release( p_spudec->p_vout );
p_spudec->p_vout = NULL;
return i_ret;
}
/*****************************************************************************
* FindVout: Find a vout or wait for one to be created.
*****************************************************************************/
static vout_thread_t *FindVout( spudec_thread_t *p_spudec )
static vout_thread_t *FindVout( decoder_t *p_dec )
{
vout_thread_t *p_vout = NULL;
/* Find an available video output */
do
{
if( p_spudec->p_fifo->b_die || p_spudec->p_fifo->b_error )
if( p_dec->b_die || p_dec->b_error )
{
break;
}
p_vout = vlc_object_find( p_spudec->p_fifo, VLC_OBJECT_VOUT,
FIND_ANYWHERE );
p_vout = vlc_object_find( p_dec, VLC_OBJECT_VOUT, FIND_ANYWHERE );
if( p_vout )
{
break;
@ -200,33 +290,3 @@ static vout_thread_t *FindVout( spudec_thread_t *p_spudec )
return p_vout;
}
/*****************************************************************************
* EndThread: thread destruction
*****************************************************************************
* This function is called when the thread ends after a sucessful
* initialization.
*****************************************************************************/
static void EndThread( spudec_thread_t *p_spudec )
{
if( p_spudec->p_vout != NULL
&& p_spudec->p_vout->p_subpicture != NULL )
{
subpicture_t * p_subpic;
int i_subpic;
for( i_subpic = 0; i_subpic < VOUT_MAX_SUBPICTURES; i_subpic++ )
{
p_subpic = &p_spudec->p_vout->p_subpicture[i_subpic];
if( p_subpic != NULL &&
( ( p_subpic->i_status == RESERVED_SUBPICTURE )
|| ( p_subpic->i_status == READY_SUBPICTURE ) ) )
{
vout_DestroySubPicture( p_spudec->p_vout, p_subpic );
}
}
}
CloseBitstream( &p_spudec->bit_stream );
free( p_spudec );
}

53
modules/codec/spudec/spudec.h
View File

@ -2,7 +2,7 @@
* spudec.h : sub picture unit decoder thread interface
*****************************************************************************
* Copyright (C) 1999, 2000 VideoLAN
* $Id: spudec.h,v 1.7 2003/07/22 20:49:10 hartman Exp $
* $Id: spudec.h,v 1.8 2003/11/22 19:55:47 fenrir Exp $
*
* Authors: Samuel Hocevar <sam@zoy.org>
*
@ -21,7 +21,21 @@
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*****************************************************************************/
typedef struct spudec_thread_t spudec_thread_t;
struct decoder_sys_t
{
int b_packetizer;
mtime_t i_pts;
int i_spu_size;
int i_rle_size;
int i_spu;
block_t *p_block;
uint8_t buffer[65536 + 20 ]; /* we will never overflow more than 11 bytes if I'm right */
vout_thread_t *p_vout;
};
struct subpicture_sys_t
{
@ -44,35 +58,6 @@ struct subpicture_sys_t
unsigned int i_x_start, i_y_start, i_x_end, i_y_end;
};
/*****************************************************************************
* spudec_thread_t : sub picture unit decoder thread descriptor
*****************************************************************************/
struct spudec_thread_t
{
/*
* Thread properties and locks
*/
vlc_thread_t thread_id; /* id for thread functions */
/*
* Input properties
*/
decoder_fifo_t * p_fifo; /* stores the PES stream data */
/* The bit stream structure handles the PES stream at the bit level */
bit_stream_t bit_stream;
/*
* Output properties
*/
vout_thread_t * p_vout; /* needed to create the spu objects */
/*
* Private properties
*/
unsigned int i_spu_size; /* size of current SPU packet */
unsigned int i_rle_size; /* size of the RLE part */
};
/*****************************************************************************
* Amount of bytes we GetChunk() in one go
*****************************************************************************/
@ -93,9 +78,7 @@ struct spudec_thread_t
/*****************************************************************************
* Prototypes
*****************************************************************************/
int E_(SyncPacket) ( spudec_thread_t * );
void E_(ParsePacket) ( spudec_thread_t * );
void E_(ParsePacket)( decoder_t * );
void E_(RenderSPU) ( vout_thread_t *, picture_t *,
const subpicture_t * );
void E_(RenderSPU) ( vout_thread_t *, picture_t *, const subpicture_t * );