Added VC-1 raw es demuxer.
authorLaurent Aimar <fenrir@videolan.org>
Sun, 25 Feb 2007 13:14:08 +0000 (13:14 +0000)
committerLaurent Aimar <fenrir@videolan.org>
Sun, 25 Feb 2007 13:14:08 +0000 (13:14 +0000)
configure.ac
modules/demux/Modules.am
modules/demux/vc1.c [new file with mode: 0644]

index 21cbad6..aeb1368 100644 (file)
@@ -1157,7 +1157,7 @@ dnl
 dnl  default modules
 dnl
 VLC_ADD_PLUGINS([dummy logger memcpy])
-VLC_ADD_PLUGINS([mpgv mpga m4v m4a h264 ps pva avi asf mp4 rawdv nsv real aiff mjpeg demuxdump flacsys tta])
+VLC_ADD_PLUGINS([mpgv mpga m4v m4a h264 vc1 ps pva avi asf mp4 rawdv nsv real aiff mjpeg demuxdump flacsys tta])
 VLC_ADD_PLUGINS([cvdsub svcdsub spudec telx subsdec dvbsub mpeg_audio lpcm a52 dts cinepak flac])
 VLC_ADD_PLUGINS([deinterlace invert adjust transform wave ripple psychedelic gradient motionblur rv32 rotate noise extract sharpen])
 VLC_ADD_PLUGINS([converter_fixed mono])
index 6346836..494c3be 100644 (file)
@@ -26,3 +26,4 @@ SOURCES_nsc = nsc.c
 SOURCES_mpc = mpc.c
 SOURCES_gme = gme.cpp
 SOURCES_tta = tta.c
+SOURCES_vc1 = vc1.c
diff --git a/modules/demux/vc1.c b/modules/demux/vc1.c
new file mode 100644 (file)
index 0000000..49fc98e
--- /dev/null
@@ -0,0 +1,192 @@
+/*****************************************************************************
+ * vc1.c : VC1 Video demuxer
+ *****************************************************************************
+ * Copyright (C) 2002-2004 the VideoLAN team
+ * $Id$
+ *
+ * Authors: 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
+ * GNU General Public License for more details.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <stdlib.h>                                      /* malloc(), free() */
+
+#include <vlc/vlc.h>
+#include <vlc_demux.h>
+#include "vlc_codec.h"
+
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+static int  Open ( vlc_object_t * );
+static void Close( vlc_object_t * );
+
+#define FPS_TEXT N_("Frames per Second")
+#define FPS_LONGTEXT N_("Desired frame rate for the VC-1 stream.")
+
+vlc_module_begin();
+    set_shortname( "VC-1");
+    set_category( CAT_INPUT );
+    set_subcategory( SUBCAT_INPUT_DEMUX );
+    set_description( _("VC1 video demuxer" ) );
+    set_capability( "demux2", 0 );
+    add_float( "vc1-fps", 25.0, NULL, FPS_TEXT, FPS_LONGTEXT, VLC_TRUE );
+    set_callbacks( Open, Close );
+    add_shortcut( "vc1" );
+vlc_module_end();
+
+/*****************************************************************************
+ * Local prototypes
+ *****************************************************************************/
+struct demux_sys_t
+{
+    mtime_t     i_dts;
+    es_out_id_t *p_es;
+
+    float       f_fps;
+    decoder_t *p_packetizer;
+};
+
+static int Demux( demux_t * );
+static int Control( demux_t *, int, va_list );
+
+#define VC1_PACKET_SIZE 4096
+
+/*****************************************************************************
+ * Open: initializes demux structures
+ *****************************************************************************/
+static int Open( vlc_object_t * p_this )
+{
+    demux_t     *p_demux = (demux_t*)p_this;
+    demux_sys_t *p_sys;
+    uint8_t     *p_peek;
+    vlc_value_t val;
+
+    if( stream_Peek( p_demux->s, &p_peek, 5 ) < 5 ) return VLC_EGENERIC;
+
+    if( p_peek[0] != 0x00 || p_peek[1] != 0x00 ||
+        p_peek[2] != 0x00 || p_peek[3] != 0x01 ||
+        p_peek[4] != 0x0f ) /* Sequence header */
+    {
+        if( !p_demux->b_force )
+        {
+            msg_Warn( p_demux, "vc-1 module discarded (no startcode)" );
+            return VLC_EGENERIC;
+        }
+
+        msg_Err( p_demux, "this doesn't look like a VC-1 ES stream, "
+                 "continuing anyway" );
+    }
+
+    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;
+    p_sys->f_fps = var_CreateGetFloat( p_demux, "vc1-fps" );
+    if( val.f_float < 0.001 ) p_sys->f_fps = 0.0;
+
+    /* Load the packetizer */
+    INIT_VPACKETIZER( p_sys->p_packetizer,  'W', 'V', 'C', '1'  );
+    es_format_Init( &p_sys->p_packetizer->fmt_out, UNKNOWN_ES, 0 );
+    LOAD_PACKETIZER_OR_FAIL( p_sys->p_packetizer, "VC-1" );
+
+    return VLC_SUCCESS;
+}
+
+/*****************************************************************************
+ * Close: frees unused data
+ *****************************************************************************/
+static void Close( vlc_object_t * p_this )
+{
+    demux_t     *p_demux = (demux_t*)p_this;
+    demux_sys_t *p_sys = p_demux->p_sys;
+
+    DESTROY_PACKETIZER( p_sys->p_packetizer );
+
+    free( p_sys );
+}
+
+/*****************************************************************************
+ * 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_sys = p_demux->p_sys;
+    block_t *p_block_in, *p_block_out;
+
+    if( ( p_block_in = stream_Block( p_demux->s, VC1_PACKET_SIZE ) ) == NULL )
+        return 0;
+
+    /*  */ 
+    p_block_in->i_dts = 1;
+    p_block_in->i_pts = 1;
+
+    while( (p_block_out = p_sys->p_packetizer->pf_packetize( p_sys->p_packetizer, &p_block_in )) )
+    {
+        while( p_block_out )
+        {
+            block_t *p_next = p_block_out->p_next;
+
+            p_block_out->p_next = NULL;
+
+            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->i_dts = p_sys->i_dts;
+            p_block_out->i_pts = p_sys->i_dts;
+
+            es_out_Send( p_demux->out, p_sys->p_es, p_block_out );
+
+            p_block_out = p_next;
+
+            if( p_sys->p_packetizer->fmt_out.video.i_frame_rate > 0 &&
+                p_sys->p_packetizer->fmt_out.video.i_frame_rate_base > 0 )
+                p_sys->i_dts += I64C(1000000) *
+                    p_sys->p_packetizer->fmt_out.video.i_frame_rate_base /
+                    p_sys->p_packetizer->fmt_out.video.i_frame_rate;
+            else if( p_sys->f_fps > 0.001 )
+                p_sys->i_dts += (int64_t)((double)1000000.0 / p_sys->f_fps);
+            else
+                p_sys->i_dts += I64C(1000000) / 25;
+        }
+    }
+    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
+        return demux2_vaControlHelper( p_demux->s,
+                                       0, -1,
+                                       0, 1, i_query, args );
+}
+