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vlc-1.1
Commit 4cec267e authored by Laurent Aimar's avatar Laurent Aimar
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* ts: added 14496-17 (text sub) support. It assumes that input is utf8 

(wrong as long as we don't have a real subtitle packetizer).
 It doesn't work very well, the syncho is a broken (subs are late by more
than 1s).
parent 90665d70
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Showing with 114 additions and 7 deletions
modules/mux/mpeg/ts.c
View file @ 4cec267e
......@@ -225,6 +225,8 @@ static inline void BufferChainClean( sout_instance_t *p_sout, sout_buffer_chain_
typedef struct ts_stream_t
{
int i_pid;
vlc_fourcc_t i_codec;
int i_stream_type;
int i_stream_id;
int i_continuity_counter;
......@@ -525,6 +527,7 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
/* Init this new stream */
p_stream->i_pid = AllocatePID( p_sys, p_input->p_fmt->i_cat );
p_stream->i_codec = p_input->p_fmt->i_codec;
p_stream->i_continuity_counter = 0;
p_stream->i_decoder_specific_info = 0;
p_stream->p_decoder_specific_info = NULL;
......@@ -615,6 +618,12 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
p_stream->i_stream_type = 0x82;
p_stream->i_stream_id = 0xbd;
break;
case VLC_FOURCC( 's', 'u','b', 't' ):
p_stream->i_stream_type = 0x12;
p_stream->i_stream_id = 0xfa;
p_sys->i_mpeg4_streams++;
p_stream->i_es_id = p_stream->i_pid;
break;
default:
free( p_stream );
return VLC_EGENERIC;
......@@ -671,6 +680,53 @@ static int AddStream( sout_mux_t *p_mux, sout_input_t *p_input )
p_input->p_fmt->i_extra );
}
/* Create decoder specific info for subt */
if( p_stream->i_codec == VLC_FOURCC( 's', 'u','b', 't' ) )
{
uint8_t *p;
p_stream->i_decoder_specific_info = 55;
p_stream->p_decoder_specific_info = p = malloc( p_stream->i_decoder_specific_info );
p[0] = 0x10; /* textFormat, 0x10 for 3GPP TS 26.245 */
p[1] = 0x00; /* flags: 1b: associated video info flag
3b: reserved
1b: duration flag
3b: reserved */
p[2] = 52; /* remaining size */
p += 3;
p[0] = p[1] = p[2] = p[3] = 0; p+=4; /* display flags */
*p++ = 0; /* horizontal justification (-1: left, 0 center, 1 right) */
*p++ = 1; /* vertical justification (-1: top, 0 center, 1 bottom) */
p[0] = p[1] = p[2] = 0x00; p+=3;/* background rgb */
*p++ = 0xff; /* background a */
p[0] = p[1] = 0; p += 2; /* text box top */
p[0] = p[1] = 0; p += 2; /* text box left */
p[0] = p[1] = 0; p += 2; /* text box bottom */
p[0] = p[1] = 0; p += 2; /* text box right */
p[0] = p[1] = 0; p += 2; /* start char */
p[0] = p[1] = 0; p += 2; /* end char */
p[0] = p[1] = 0; p += 2; /* default font id */
*p++ = 0; /* font style flags */
*p++ = 12; /* font size */
p[0] = p[1] = p[2] = 0x00; p+=3;/* foreground rgb */
*p++ = 0x00; /* foreground a */
p[0] = p[1] = p[2] = 0; p[3] = 22; p += 4;
memcpy( p, "ftab", 4 ); p += 4;
*p++ = 0; *p++ = 1; /* entry count */
p[0] = p[1] = 0; p += 2; /* font id */
*p++ = 9; /* font name length */
memcpy( p, "Helvetica", 9 ); /* font name */
}
/* Init pes chain */
BufferChainInit( &p_stream->chain_pes );
p_stream->i_pes_dts = 0;
......@@ -755,7 +811,9 @@ static int DelStream( sout_mux_t *p_mux, sout_input_t *p_input )
{
free( p_stream->p_decoder_specific_info );
}
if( p_stream->i_stream_id == 0xfa || p_stream->i_stream_id == 0xfb )
if( p_stream->i_stream_id == 0xfa ||
p_stream->i_stream_id == 0xfb ||
p_stream->i_stream_id == 0xfe )
{
p_sys->i_mpeg4_streams--;
}
......@@ -837,14 +895,17 @@ static int Mux( sout_mux_t *p_mux )
{
sout_input_t *p_input = p_mux->pp_inputs[i];
ts_stream_t *p_stream = (ts_stream_t*)p_input->p_sys;
int64_t i_spu_length = 0;
int64_t i_spu_dts = 0;
if( ( p_stream == p_pcr_stream
&& p_stream->i_pes_length < i_shaping_delay ) ||
p_stream->i_pes_dts + p_stream->i_pes_length
p_stream->i_pes_dts + p_stream->i_pes_length
< p_pcr_stream->i_pes_dts + p_pcr_stream->i_pes_length )
{
/* Need more data */
if( p_input->p_fifo->i_depth <= 1 )
if( p_input->p_fifo->i_depth <= 50 )
{
if( p_input->p_fmt->i_cat == AUDIO_ES ||
p_input->p_fmt->i_cat == VIDEO_ES )
......@@ -861,6 +922,11 @@ static int Mux( sout_mux_t *p_mux )
b_ok = VLC_FALSE;
p_data = block_FifoGet( p_input->p_fifo );
if( p_input->p_fmt->i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
{
i_spu_length = p_data->i_length; /* save info for SPU */
i_spu_dts = p_data->i_dts;
}
if( p_input->p_fifo->i_depth > 0 )
{
block_t *p_next = block_FifoShow( p_input->p_fifo );
......@@ -870,7 +936,7 @@ static int Mux( sout_mux_t *p_mux )
if( ( p_pcr_stream->i_pes_dts > 0 && p_data->i_dts - 2000000 > p_pcr_stream->i_pes_dts + p_pcr_stream->i_pes_length ) ||
p_data->i_dts < p_stream->i_pes_dts ||
( p_stream->i_pes_dts > 0 && p_data->i_dts - 2000000 > p_stream->i_pes_dts + p_stream->i_pes_length ) )
( p_stream->i_pes_dts > 0 && p_input->p_fmt->i_cat != SPU_ES && p_data->i_dts - 2000000 > p_stream->i_pes_dts + p_stream->i_pes_length ) )
{
msg_Warn( p_mux, "packet with too strange dts (dts=%lld,old=%lld,pcr=%lld)",
p_data->i_dts,
......@@ -891,12 +957,29 @@ static int Mux( sout_mux_t *p_mux )
}
else
{
if( p_data->i_length < 0 || p_data->i_length > 2000000 )
if( p_input->p_fmt->i_cat == SPU_ES )
{
/* Arbitrary */
p_data->i_length = 1000;
if( p_input->p_fmt->i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
{
/* Prepend header */
p_data = block_Realloc( p_data, 2, p_data->i_buffer );
p_data->p_buffer[0] = ( (p_data->i_buffer - 2) >> 8)&0xff;
p_data->p_buffer[1] = ( (p_data->i_buffer - 2) )&0xff;
/* remove trailling \0 if any */
if( p_data->i_buffer > 2 && p_data->p_buffer[p_data->i_buffer -1] == '\0' )
p_data->i_buffer--;
}
}
else if( p_data->i_length < 0 || p_data->i_length > 2000000 )
{
/* FIXME choose a better value, but anyway we should never
* have to do that */
p_data->i_length = 1000;
}
p_stream->i_pes_length += p_data->i_length;
if( p_stream->i_pes_dts == 0 )
{
......@@ -920,6 +1003,23 @@ static int Mux( sout_mux_t *p_mux )
i_shaping_delay = p_stream->i_pes_length;
p_stream->b_key_frame = 1;
}
/* Append a empty sub (sub text only) */
if( i_spu_length > 0 )
{
block_t *p_spu = block_New( p_mux, 3 );
p_spu->i_dts = p_spu->i_pts = i_spu_dts + i_spu_length;
p_spu->i_length = 1000;
p_spu->p_buffer[0] = 0;
p_spu->p_buffer[1] = 1;
p_spu->p_buffer[2] = ' ';
p_stream->i_pes_length += p_spu->i_length;
E_( EStoPES )( p_mux->p_sout, &p_spu, p_spu, p_stream->i_stream_id, 1 );
BufferChainAppend( &p_stream->chain_pes, p_spu );
}
}
}
}
......@@ -1000,7 +1100,7 @@ static int Mux( sout_mux_t *p_mux )
i_dts = p_stream->i_pes_dts;
}
}
if( i_stream == -1 )
if( i_stream == -1 || i_dts > i_pcr_dts + i_pcr_length )
{
break;
}
......@@ -1749,7 +1849,9 @@ static void GetPMT( sout_mux_t *p_mux,
ts_stream_t *p_stream;
p_stream = (ts_stream_t*)p_mux->pp_inputs[i_stream]->p_sys;
if( p_stream->i_stream_id == 0xfa || p_stream->i_stream_id == 0xfb )
if( p_stream->i_stream_id == 0xfa ||
p_stream->i_stream_id == 0xfb ||
p_stream->i_stream_id == 0xfe )
{
bits_buffer_t bits_fix_ESDescr, bits_fix_Decoder;
/* ES descriptor */
......@@ -1778,6 +1880,11 @@ static void GetPMT( sout_mux_t *p_mux,
bits_write( &bits, 8, 0x40 ); // Audio 14496-3
bits_write( &bits, 6, 0x05 ); // AudioStream
}
else if( p_stream->i_stream_type == 0x12 && p_stream->i_codec == VLC_FOURCC( 's', 'u', 'b', 't' ) )
{
bits_write( &bits, 8, 0x0B ); // Text Stream
bits_write( &bits, 6, 0x04 ); // VisualStream
}
else
{
bits_write( &bits, 8, 0x00 );
......
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