/*****************************************************************************
* pes.c: PES packetizer used by the MPEG multiplexers
*****************************************************************************
- * Copyright (C) 2001, 2002 VideoLAN
- * $Id: pes.c,v 1.8 2003/07/15 13:12:00 gbazin Exp $
+ * Copyright (C) 2001, 2002 the VideoLAN team
+ * $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
* Eric Petit <titer@videolan.org>
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
#include "pes.h"
#include "bits.h"
-#define PES_PAYLOAD_SIZE_MAX 65500
-
static inline int PESHeader( uint8_t *p_hdr, mtime_t i_pts, mtime_t i_dts,
- int i_es_size, int i_stream_id, int i_private_id,
- vlc_bool_t b_mpeg2 )
+ int i_es_size, es_format_t *p_fmt,
+ int i_stream_id, int i_private_id,
+ vlc_bool_t b_mpeg2, vlc_bool_t b_data_alignment,
+ int i_header_size )
{
bits_buffer_t bits;
+ int i_extra = 0;
+
+ /* For PES_PRIVATE_STREAM_1 there is an extra header after the
+ pes header */
+ /* i_private_id != -1 because TS use 0xbd without private_id */
+ if( i_stream_id == PES_PRIVATE_STREAM_1 && i_private_id != -1 )
+ {
+ i_extra = 1;
+ if( ( i_private_id & 0xf0 ) == 0x80 )
+ {
+ i_extra += 3;
+ }
+ }
- bits_initwrite( &bits, 30, p_hdr );
+ bits_initwrite( &bits, 50, p_hdr );
/* add start code */
bits_write( &bits, 24, 0x01 );
/* arg, a little more difficult */
if( b_mpeg2 )
{
- int i_pts_dts;
- int i_extra = 0;
-
- /* For PES_PRIVATE_STREAM_1 there is an extra header after the
- pes header */
- if( i_stream_id == PES_PRIVATE_STREAM_1 )
- {
- i_extra = 1;
- if( ( i_private_id&0xf0 ) == 0x80 )
- {
- i_extra += 3;
- }
- }
+ int i_pts_dts;
- if( i_pts >= 0 && i_dts >= 0 )
+ if( i_pts > 0 && i_dts > 0 &&
+ ( i_pts != i_dts || ( p_fmt->i_cat == VIDEO_ES &&
+ p_fmt->i_codec != VLC_FOURCC('m','p','g','v') ) ) )
{
- bits_write( &bits, 16, i_es_size + i_extra+ 13 );
i_pts_dts = 0x03;
+ if ( !i_header_size ) i_header_size = 0xa;
}
- else if( i_pts >= 0 )
+ else if( i_pts > 0 )
{
- bits_write( &bits, 16, i_es_size + i_extra + 8 );
i_pts_dts = 0x02;
+ if ( !i_header_size ) i_header_size = 0x5;
}
else
{
- bits_write( &bits, 16, i_es_size + i_extra + 3 );
i_pts_dts = 0x00;
+ if ( !i_header_size ) i_header_size = 0x0;
}
+ bits_write( &bits, 16, i_es_size + i_extra + 3
+ + i_header_size ); // size
bits_write( &bits, 2, 0x02 ); // mpeg2 id
bits_write( &bits, 2, 0x00 ); // pes scrambling control
bits_write( &bits, 1, 0x00 ); // pes priority
- bits_write( &bits, 1, 0x00 ); // data alignement indicator
+ bits_write( &bits, 1, b_data_alignment ); // data alignement indicator
bits_write( &bits, 1, 0x00 ); // copyright
bits_write( &bits, 1, 0x00 ); // original or copy
bits_write( &bits, 1, 0x00 ); // dsm trick mode flag
bits_write( &bits, 1, 0x00 ); // additional copy info flag
bits_write( &bits, 1, 0x00 ); // pes crc flag
- bits_write( &bits, 1, 0x00 ); // pes extention flags
- if( i_pts_dts == 0x03 )
- {
- bits_write( &bits, 8, 0x0a ); // header size -> pts and dts
- }
- else if( i_pts_dts == 0x02 )
- {
- bits_write( &bits, 8, 0x05 ); // header size -> pts
- }
- else
- {
- bits_write( &bits, 8, 0x00 ); // header size -> 0
- }
+ bits_write( &bits, 1, 0x00 ); // pes extension flags
+ bits_write( &bits, 8, i_header_size ); // header size -> pts and dts
/* write pts */
if( i_pts_dts & 0x02 )
bits_write( &bits, 1, 0x01 ); // marker
bits_write( &bits, 15, i_pts );
bits_write( &bits, 1, 0x01 ); // marker
+ i_header_size -= 0x5;
}
/* write i_dts */
if( i_pts_dts & 0x01 )
bits_write( &bits, 1, 0x01 ); // marker
bits_write( &bits, 15, i_dts );
bits_write( &bits, 1, 0x01 ); // marker
+ i_header_size -= 0x5;
+ }
+ while ( i_header_size )
+ {
+ bits_write( &bits, 8, 0xff );
+ i_header_size--;
}
}
- else /* MPEG1 */
- {
+ else /* MPEG1 */
+ {
int i_pts_dts;
- if( i_pts >= 0 && i_dts >= 0 )
+ if( i_pts > 0 && i_dts > 0 &&
+ ( i_pts != i_dts || p_fmt->i_cat == VIDEO_ES ) )
{
- bits_write( &bits, 16, i_es_size + 10 /* + stuffing */ );
+ bits_write( &bits, 16, i_es_size + i_extra + 10 /* + stuffing */ );
i_pts_dts = 0x03;
}
- else if( i_pts >= 0 )
+ else if( i_pts > 0 )
{
- bits_write( &bits, 16, i_es_size + 5 /* + stuffing */ );
+ bits_write( &bits, 16, i_es_size + i_extra + 5 /* + stuffing */ );
i_pts_dts = 0x02;
}
else
{
- bits_write( &bits, 16, i_es_size + 1 /* + stuffing */);
+ bits_write( &bits, 16, i_es_size + i_extra + 1 /* + stuffing */);
i_pts_dts = 0x00;
}
bits_write( &bits, 15, i_dts );
bits_write( &bits, 1, 0x01 ); // marker
}
- if( !i_pts_dts )
+ if( !i_pts_dts )
{
bits_write( &bits, 8, 0x0F );
}
- }
+ }
/* now should be stuffing */
/* and then pes data */
}
}
-int E_( EStoPES )( sout_instance_t *p_sout,
- sout_buffer_t **pp_pes,
- sout_buffer_t *p_es,
- int i_stream_id,
- int b_mpeg2 )
+int E_( EStoPES )( sout_instance_t *p_sout, block_t **pp_pes, block_t *p_es,
+ es_format_t *p_fmt, int i_stream_id,
+ int b_mpeg2, int b_data_alignment, int i_header_size,
+ int i_max_pes_size )
{
- sout_buffer_t *p_es_sav, *p_pes;
- mtime_t i_pts, i_dts;
+ block_t *p_pes;
+ mtime_t i_pts, i_dts, i_length;
uint8_t *p_data;
int i_size;
int i_private_id = -1;
- uint8_t header[30]; // PES header + extra < 30 (more like 17)
+ uint8_t header[50]; // PES header + extra < 50 (more like 17)
int i_pes_payload;
int i_pes_header;
+ int i_pes_count = 1;
+
/* HACK for private stream 1 in ps */
if( ( i_stream_id >> 8 ) == PES_PRIVATE_STREAM_1 )
{
i_stream_id = PES_PRIVATE_STREAM_1;
}
- i_pts = p_es->i_pts < 0 ? -1 : p_es->i_pts * 9 / 100; // 90000 units clock
- i_dts = p_es->i_dts < 0 ? -1 : p_es->i_dts * 9 / 100; // 90000 units clock
+ if( p_fmt->i_codec == VLC_FOURCC( 'm', 'p','4', 'v' ) &&
+ p_es->i_flags & BLOCK_FLAG_TYPE_I )
+ {
+ /* For MPEG4 video, add VOL before I-frames */
+ p_es = block_Realloc( p_es, p_fmt->i_extra, p_es->i_buffer );
- i_size = p_es->i_size;
+ memcpy( p_es->p_buffer, p_fmt->p_extra, p_fmt->i_extra );
+ }
+
+ i_pts = p_es->i_pts <= 0 ? 0 : p_es->i_pts * 9 / 100; // 90000 units clock
+ i_dts = p_es->i_dts <= 0 ? 0 : p_es->i_dts * 9 / 100; // 90000 units clock
+
+ i_size = p_es->i_buffer;
p_data = p_es->p_buffer;
*pp_pes = p_pes = NULL;
- p_es_sav = p_es;
+
+#ifdef DEBUG
+ memset( header, 0, 50 );
+#endif
do
{
- i_pes_payload = __MIN( i_size, PES_PAYLOAD_SIZE_MAX );
+ i_pes_payload = __MIN( i_size, (i_max_pes_size ?
+ i_max_pes_size : PES_PAYLOAD_SIZE_MAX) );
i_pes_header = PESHeader( header, i_pts, i_dts, i_pes_payload,
- i_stream_id, i_private_id, b_mpeg2 );
- i_dts = -1; // only first PES has a dts/pts
- i_pts = -1;
+ p_fmt, i_stream_id, i_private_id, b_mpeg2,
+ b_data_alignment, i_header_size );
+ i_dts = 0; // only first PES has a dts/pts
+ i_pts = 0;
- if( p_es )
+ if( p_es )
{
- if( sout_BufferReallocFromPreHeader( p_sout, p_es, i_pes_header ) )
- {
- msg_Err( p_sout,
- "cannot realloc preheader (should never happen)" );
- return( -1 );
- }
+ p_es = block_Realloc( p_es, i_pes_header, p_es->i_buffer );
+ p_data = p_es->p_buffer+i_pes_header;
/* reuse p_es for first frame */
*pp_pes = p_pes = p_es;
/* don't touch i_dts, i_pts, i_length as are already set :) */
}
else
{
- p_pes->p_next = sout_BufferNew( p_sout,
- i_pes_header + i_pes_payload );
+ p_pes->p_next = block_New( p_sout, i_pes_header + i_pes_payload );
p_pes = p_pes->p_next;
p_pes->i_dts = 0;
p_pes->i_length = 0;
if( i_pes_payload > 0 )
{
- p_sout->p_vlc->pf_memcpy( p_pes->p_buffer + i_pes_header,
+ p_sout->p_libvlc->pf_memcpy( p_pes->p_buffer + i_pes_header,
p_data, i_pes_payload );
}
+ i_pes_count++;
}
/* copy header */
i_size -= i_pes_payload;
p_data += i_pes_payload;
- p_pes->i_size = i_pes_header + i_pes_payload;
+ p_pes->i_buffer = i_pes_header + i_pes_payload;
} while( i_size > 0 );
- /* sav some space */
- if( p_es_sav->i_size + 10*1024 < p_es_sav->i_buffer_size )
+ /* Now redate all pes */
+ i_dts = (*pp_pes)->i_dts;
+ i_length = (*pp_pes)->i_length / i_pes_count;
+ for( p_pes = *pp_pes; p_pes != NULL; p_pes = p_pes->p_next )
{
- sout_BufferRealloc( p_sout, p_es_sav, p_es_sav->i_size );
+ p_pes->i_dts = i_dts;
+ p_pes->i_length = i_length;
+
+ i_dts += i_length;
}
- return( 0 );
+ return 0;
}
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