/*****************************************************************************
- * m4v.c : MPEG-4 video Stream input module for vlc
+ * m4v.c : MPEG-4 Video demuxer
*****************************************************************************
- * Copyright (C) 2002 VideoLAN
- * $Id: m4v.c,v 1.4 2003/03/30 18:14:37 gbazin Exp $
+ * Copyright (C) 2002-2004 the VideoLAN team
+ * $Id$
*
* Authors: Laurent Aimar <fenrir@via.ecp.fr>
*
*
* 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.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
#include <stdlib.h> /* malloc(), free() */
-#include <string.h>
#include <vlc/vlc.h>
-#include <vlc/input.h>
-
-/*****************************************************************************
- * Local prototypes
- *****************************************************************************/
-static int Activate ( vlc_object_t * );
-static int Demux ( input_thread_t * );
+#include <vlc_demux.h>
+#include "vlc_codec.h"
/*****************************************************************************
* Module descriptor
*****************************************************************************/
+static int Open ( vlc_object_t * );
+static void Close( vlc_object_t * );
+
vlc_module_begin();
- set_description( _("MPEG-4 video elementary stream demuxer" ) );
- set_capability( "demux", 0 );
- set_callbacks( Activate, NULL );
+ set_category( CAT_INPUT );
+ set_subcategory( SUBCAT_INPUT_DEMUX );
+ set_description( _("MPEG-4 video demuxer" ) );
+ set_capability( "demux2", 0 );
+ set_callbacks( Open, Close );
add_shortcut( "m4v" );
+ add_shortcut( "mp4v" );
vlc_module_end();
/*****************************************************************************
- * Definitions of structures and functions used by this plugins
+ * Local prototypes
*****************************************************************************/
-
struct demux_sys_t
{
- mtime_t i_dts;
+ mtime_t i_dts;
+ es_out_id_t *p_es;
- es_descriptor_t *p_es;
+ decoder_t *p_packetizer;
};
+static int Demux( demux_t * );
+static int Control( demux_t *, int, va_list );
+
+#define M4V_PACKET_SIZE 4096
/*****************************************************************************
- * Activate: initializes MPEGaudio structures
+ * Open: initializes demux structures
*****************************************************************************/
-static int Activate( vlc_object_t * p_this )
+static int Open( vlc_object_t * p_this )
{
- input_thread_t * p_input = (input_thread_t *)p_this;
- demux_sys_t * p_demux;
- input_info_category_t * p_category;
-
- uint8_t *p_peek;
+ demux_t *p_demux = (demux_t*)p_this;
+ demux_sys_t *p_sys;
+ uint8_t *p_peek;
- /* Set the demux function */
- p_input->pf_demux = Demux;
+ if( stream_Peek( p_demux->s, &p_peek, 4 ) < 4 ) return VLC_EGENERIC;
- /* Initialize access plug-in structures. */
- if( p_input->i_mtu == 0 )
+ if( p_peek[0] != 0x00 || p_peek[1] != 0x00 || p_peek[2] != 0x01 )
{
- /* Improve speed. */
- p_input->i_bufsize = INPUT_DEFAULT_BUFSIZE;
- }
-
- /* Have a peep at the show. */
- if( input_Peek( p_input, &p_peek, 4 ) < 4 )
- {
- /* Stream shorter than 4 bytes... */
- msg_Err( p_input, "cannot peek()" );
- return( -1 );
- }
-
- if( p_peek[0] != 0x00 || p_peek[1] != 0x00 || p_peek[2] != 0x01 || p_peek[3] > 0x2f )
- {
- if( *p_input->psz_demux && !strncmp( p_input->psz_demux, "m4v", 3 ) )
- {
- /* user forced */
- msg_Warn( p_input, "this doesn't look like an MPEG-4 ES stream, continuing" );
- }
- else
+ if( !p_demux->b_force )
{
- msg_Warn( p_input, "m4v module discarded (invalid startcode)" );
- return( -1 );
+ msg_Warn( p_demux, "m4v module discarded (no startcode)" );
+ return VLC_EGENERIC;
}
- }
- /* create p_demux and init it */
- if( !( p_demux = p_input->p_demux_data = malloc( sizeof(demux_sys_t) ) ) )
- {
- msg_Err( p_input, "out of memory" );
- return( -1 );
+ msg_Warn( p_demux, "this doesn't look like an MPEG-4 ES stream, "
+ "continuing anyway" );
}
- memset( p_demux, 0, sizeof(demux_sys_t) );
- p_demux->i_dts = 0;
- vlc_mutex_lock( &p_input->stream.stream_lock );
- if( input_InitStream( p_input, 0 ) == -1)
- {
- msg_Err( p_input, "cannot init stream" );
- free( p_input->p_demux_data );
- return( -1 );
- }
- if( input_AddProgram( p_input, 0, 0) == NULL )
- {
- msg_Err( p_input, "cannot add program" );
- free( p_input->p_demux_data );
- return( -1 );
- }
- p_input->stream.pp_programs[0]->b_is_ok = 0;
- p_input->stream.p_selected_program = p_input->stream.pp_programs[0];
-
- /* create our ES */
- p_demux->p_es = input_AddES( p_input,
- p_input->stream.p_selected_program,
- 1, /* id */
- 0 );
- if( !p_demux->p_es )
- {
- vlc_mutex_unlock( &p_input->stream.stream_lock );
- msg_Err( p_input, "out of memory" );
- free( p_input->p_demux_data );
- return( -1 );
- }
- p_demux->p_es->i_stream_id = 1;
- p_demux->p_es->i_fourcc = VLC_FOURCC('m','p','4','v');
- p_demux->p_es->i_cat = VIDEO_ES;
+ p_demux->pf_demux = Demux;
+ p_demux->pf_control= Control;
+ p_demux->p_sys = p_sys = malloc( sizeof( demux_sys_t ) );
+ p_sys->p_es = NULL;
+ p_sys->i_dts = 1;
- input_SelectES( p_input, p_demux->p_es );
+ /* Load the mpeg4video packetizer */
+ INIT_VPACKETIZER( p_sys->p_packetizer, 'm', 'p', '4', 'v' );
+ es_format_Init( &p_sys->p_packetizer->fmt_out, UNKNOWN_ES, 0 );
- p_input->stream.p_selected_program->b_is_ok = 1;
- vlc_mutex_unlock( &p_input->stream.stream_lock );
+ LOAD_PACKETIZER_OR_FAIL( p_sys->p_packetizer, "mpeg4 video" );
- vlc_mutex_lock( &p_input->stream.stream_lock );
- p_category = input_InfoCategory( p_input, _("mpeg") );
- input_AddInfo( p_category, _("Input Type"), _("Video MPEG-4 (raw ES)") );
- vlc_mutex_unlock( &p_input->stream.stream_lock );
+ /* We need to wait until we get p_extra (VOL header) from the packetizer
+ * before we create the output */
- return( 0 );
+ return VLC_SUCCESS;
}
/*****************************************************************************
- * Demux: reads and demuxes data packets
- *****************************************************************************
- * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
+ * Close: frees unused data
*****************************************************************************/
-static int FindStartCode( uint8_t *p_data, int i_size, uint8_t i_startcode, uint8_t i_mask )
+static void Close( vlc_object_t * p_this )
{
- int i_pos = 0;
+ demux_t *p_demux = (demux_t*)p_this;
+ demux_sys_t *p_sys = p_demux->p_sys;
- for( i_pos = 0; i_size >= 4; i_pos++,i_size--,p_data++ )
- {
- if( p_data[0] == 0 && p_data[1] == 0 &&
- p_data[2] == 1 && ( p_data[3]&i_mask) == i_startcode )
- {
- return( i_pos );
- }
- }
- return( i_pos );
-}
+ DESTROY_PACKETIZER( p_sys->p_packetizer) ;
-static void PESAddDataPacket( pes_packet_t *p_pes, data_packet_t *p_data )
-{
- if( !p_pes->p_first )
- {
- p_pes->p_first = p_data;
- p_pes->i_nb_data = 1;
- p_pes->i_pes_size = p_data->p_payload_end - p_data->p_payload_start;
- }
- else
- {
- p_pes->p_last->p_next = p_data;
- p_pes->i_nb_data++;
- p_pes->i_pes_size += p_data->p_payload_end - p_data->p_payload_start;
- }
- p_pes->p_last = p_data;
+ free( p_sys );
}
-static int Demux( input_thread_t * p_input )
+/*****************************************************************************
+ * Demux: reads and demuxes data packets
+ *****************************************************************************
+ * Returns -1 in case of error, 0 in case of EOF, 1 otherwise
+ *****************************************************************************/
+static int Demux( demux_t *p_demux)
{
- demux_sys_t *p_demux = p_input->p_demux_data;
- pes_packet_t *p_pes;
- data_packet_t *p_data;
- uint8_t *p_peek;
- int i_peek;
- int i_size;
- int i_read;
- int b_vop;
-
- input_ClockManageRef( p_input,
- p_input->stream.p_selected_program,
- p_demux->i_dts );
-
- if( (p_pes = input_NewPES( p_input->p_method_data ) ) == NULL )
- {
- msg_Err( p_input, "cannot allocate new PES" );
- return( -1 );
- }
+ demux_sys_t *p_sys = p_demux->p_sys;
+ block_t *p_block_in, *p_block_out;
- /* we will read data into this pes until we found a vop header */
- for( ; ; )
+ if( ( p_block_in = stream_Block( p_demux->s, M4V_PACKET_SIZE ) ) == NULL )
{
- /* Have a peep at the show. */
- if( ( i_peek = input_Peek( p_input, &p_peek, 512 ) ) < 5 )
- {
- /* Stream shorter than 4 bytes... */
- msg_Warn( p_input, "cannot peek()" );
- return( 0 );
- }
-
- /* vop startcode */
- if( ( i_size = FindStartCode( p_peek, i_peek, 0xb6, 0xff ) ) == 0 )
- {
- break;
- }
-
- if( ( i_read = input_SplitBuffer( p_input,
- &p_data,
- i_size ) ) < 0 )
- {
- msg_Warn( p_input, "error while reading data" );
- break;
- }
- PESAddDataPacket( p_pes, p_data );
+ return 0;
}
- b_vop = 1;
- for( ; ; )
- {
- /* Have a peep at the show. */
- if( ( i_peek = input_Peek( p_input, &p_peek, 512 ) ) < 5 )
- {
- /* Stream shorter than 4 bytes... */
- msg_Warn( p_input, "cannot peek()" );
- return( 0 );
- }
- /* vop startcode */
- if( b_vop )
- i_size = FindStartCode( p_peek + 1, i_peek - 1, 0x00, 0x00 ) + 1;
- else
- i_size = FindStartCode( p_peek, i_peek, 0x00, 0x00 );
- b_vop = 0;
+ /* m4v demuxer doesn't set pts/dts at all */
+ p_block_in->i_dts = p_sys->i_dts;
+ p_block_in->i_pts = 0;
- if( i_size == 0 )
- {
- break;
- }
-
- if( ( i_read = input_SplitBuffer( p_input,
- &p_data,
- i_size ) ) < 0 )
+ while( (p_block_out = p_sys->p_packetizer->pf_packetize( p_sys->p_packetizer, &p_block_in )) )
+ {
+ while( p_block_out )
{
- msg_Warn( p_input, "error while reading data" );
- break;
+ block_t *p_next = p_block_out->p_next;
+
+ if( p_sys->p_es == NULL )
+ {
+ p_sys->p_packetizer->fmt_out.b_packetized = VLC_TRUE;
+ p_sys->p_es = es_out_Add( p_demux->out, &p_sys->p_packetizer->fmt_out);
+ }
+
+ es_out_Control( p_demux->out, ES_OUT_SET_PCR, p_sys->i_dts );
+
+ p_block_out->p_next = NULL;
+ if( p_block_out->i_pts == p_block_out->i_dts )
+ {
+ p_block_out->i_pts = p_sys->i_dts;
+ }
+ else
+ {
+ p_block_out->i_pts = 0;
+ }
+ p_block_out->i_dts = p_sys->i_dts;
+
+ es_out_Send( p_demux->out, p_sys->p_es, p_block_out );
+
+ p_block_out = p_next;
+
+ /* FIXME FIXME FIXME FIXME */
+ p_sys->i_dts += (mtime_t)1000000 / 25;
+ /* FIXME FIXME FIXME FIXME */
}
- PESAddDataPacket( p_pes, p_data );
}
+ return 1;
+}
- p_pes->i_dts =
- p_pes->i_pts = input_ClockGetTS( p_input,
- p_input->stream.p_selected_program,
- p_demux->i_dts );
-
- if( !p_demux->p_es->p_decoder_fifo )
- {
- msg_Err( p_input, "no video decoder" );
- input_DeletePES( p_input->p_method_data, p_pes );
- return( -1 );
- }
+/*****************************************************************************
+ * Control:
+ *****************************************************************************/
+static int Control( demux_t *p_demux, int i_query, va_list args )
+{
+ /* demux_sys_t *p_sys = p_demux->p_sys; */
+ /* FIXME calculate the bitrate */
+ if( i_query == DEMUX_SET_TIME )
+ return VLC_EGENERIC;
else
- {
- input_DecodePES( p_demux->p_es->p_decoder_fifo, p_pes );
- }
- /* FIXME FIXME FIXME FIXME */
- p_demux->i_dts += (mtime_t)90000 / 25;
- /* FIXME FIXME FIXME FIXME */
-
- return( 1 );
+ return demux2_vaControlHelper( p_demux->s,
+ 0, -1,
+ 0, 1, i_query, args );
}
-
projects / vlc / blobdiff