/* GStreamer * Copyright (C) <1999> Erik Walthinsen * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /* #define GST_DEBUG_ENABLED */ #include #include "gstavidemux.h" /* elementfactory information */ static GstElementDetails gst_avi_demux_details = { "Avi demuxer", "Codec/Demuxer", "Demultiplex an avi file into audio and video", VERSION, "Erik Walthinsen \n" "Wim Taymans ", "(C) 1999", }; static GstCaps* avi_type_find (GstBuffer *buf, gpointer private); /* typefactory for 'avi' */ static GstTypeDefinition avidefinition = { "avidemux_video/avi", "video/avi", ".avi", avi_type_find, }; /* AviDemux signals and args */ enum { /* FILL ME */ LAST_SIGNAL }; enum { ARG_0, ARG_BITRATE, /* FILL ME */ }; GST_PAD_TEMPLATE_FACTORY (sink_templ, "sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_CAPS_NEW ( "avidemux_sink", "video/avi", "format", GST_PROPS_STRING ("AVI") ) ) GST_PAD_TEMPLATE_FACTORY (src_video_templ, "video_%02d", GST_PAD_SRC, GST_PAD_SOMETIMES, GST_CAPS_NEW ( "avidemux_src_video", "video/avi", "format", GST_PROPS_LIST ( GST_PROPS_STRING ("strf_vids"), GST_PROPS_STRING ("strf_iavs") ), "width", GST_PROPS_INT_RANGE (16, 4096), "height", GST_PROPS_INT_RANGE (16, 4096) ), GST_CAPS_NEW ( "avidemux_src_video", "video/raw", "format", GST_PROPS_LIST ( GST_PROPS_FOURCC (GST_MAKE_FOURCC('Y','U','Y','2')), GST_PROPS_FOURCC (GST_MAKE_FOURCC('I','4','2','0')) ), "width", GST_PROPS_INT_RANGE (16, 4096), "height", GST_PROPS_INT_RANGE (16, 4096) ), GST_CAPS_NEW ( "avidemux_src_video", "video/jpeg", "width", GST_PROPS_INT_RANGE (16, 4096), "height", GST_PROPS_INT_RANGE (16, 4096) ), GST_CAPS_NEW ( "avidemux_src_video", "video/dv", "format", GST_PROPS_LIST ( GST_PROPS_STRING ("NTSC"), GST_PROPS_STRING ("PAL") ), "width", GST_PROPS_INT_RANGE (16, 4096), "height", GST_PROPS_INT_RANGE (16, 4096) ) ) GST_PAD_TEMPLATE_FACTORY (src_audio_templ, "audio_%02d", GST_PAD_SRC, GST_PAD_SOMETIMES, GST_CAPS_NEW ( "avidemux_src_audio", "video/avi", "format", GST_PROPS_STRING ("strf_auds") ), GST_CAPS_NEW ( "avidemux_src_audio", "audio/raw", "format", GST_PROPS_STRING ("int"), "law", GST_PROPS_INT (0), "endianness", GST_PROPS_INT (G_BYTE_ORDER), "signed", GST_PROPS_LIST ( GST_PROPS_BOOLEAN (TRUE), GST_PROPS_BOOLEAN (FALSE) ), "width", GST_PROPS_LIST ( GST_PROPS_INT (8), GST_PROPS_INT (16) ), "depth", GST_PROPS_LIST ( GST_PROPS_INT (8), GST_PROPS_INT (16) ), "rate", GST_PROPS_INT_RANGE (11025, 44100), "channels", GST_PROPS_INT_RANGE (1, 2) ), GST_CAPS_NEW ( "avidemux_src_audio", "audio/mp3", NULL ) ) static void gst_avi_demux_class_init (GstAviDemuxClass *klass); static void gst_avi_demux_init (GstAviDemux *avi_demux); static void gst_avi_demux_loop (GstElement *element); static gboolean gst_avi_demux_send_event (GstElement *element, GstEvent *event); static gboolean gst_avi_demux_handle_src_event (GstPad *pad, GstEvent *event); static gboolean gst_avi_demux_handle_src_query (GstPad *pad, GstPadQueryType type, GstFormat *format, gint64 *value); static gboolean gst_avi_demux_src_convert (GstPad *pad, GstFormat src_format, gint64 src_value, GstFormat *dest_format, gint64 *dest_value); static GstElementStateReturn gst_avi_demux_change_state (GstElement *element); static void gst_avi_demux_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec); static GstElementClass *parent_class = NULL; /*static guint gst_avi_demux_signals[LAST_SIGNAL] = { 0 }; */ GType gst_avi_demux_get_type(void) { static GType avi_demux_type = 0; if (!avi_demux_type) { static const GTypeInfo avi_demux_info = { sizeof(GstAviDemuxClass), NULL, NULL, (GClassInitFunc)gst_avi_demux_class_init, NULL, NULL, sizeof(GstAviDemux), 0, (GInstanceInitFunc)gst_avi_demux_init, }; avi_demux_type = g_type_register_static(GST_TYPE_ELEMENT, "GstAviDemux", &avi_demux_info, 0); } return avi_demux_type; } static void gst_avi_demux_class_init (GstAviDemuxClass *klass) { GObjectClass *gobject_class; GstElementClass *gstelement_class; gobject_class = (GObjectClass*)klass; gstelement_class = (GstElementClass*)klass; g_object_class_install_property (G_OBJECT_CLASS(klass), ARG_BITRATE, g_param_spec_long ("bitrate","bitrate","bitrate", G_MINLONG, G_MAXLONG, 0, G_PARAM_READABLE)); /* CHECKME */ parent_class = g_type_class_ref (GST_TYPE_ELEMENT); gobject_class->get_property = gst_avi_demux_get_property; gstelement_class->change_state = gst_avi_demux_change_state; gstelement_class->send_event = gst_avi_demux_send_event; } static void gst_avi_demux_init (GstAviDemux *avi_demux) { GST_FLAG_SET (avi_demux, GST_ELEMENT_EVENT_AWARE); avi_demux->sinkpad = gst_pad_new_from_template ( GST_PAD_TEMPLATE_GET (sink_templ), "sink"); gst_element_add_pad (GST_ELEMENT (avi_demux), avi_demux->sinkpad); gst_element_set_loop_function (GST_ELEMENT (avi_demux), gst_avi_demux_loop); avi_demux->num_streams = 0; avi_demux->num_v_streams = 0; avi_demux->num_a_streams = 0; avi_demux->index_entries = NULL; avi_demux->index_size = 0; avi_demux->seek_pending = 0; } static GstCaps* avi_type_find (GstBuffer *buf, gpointer private) { gchar *data = GST_BUFFER_DATA (buf); GstCaps *new; GST_DEBUG (0,"avi_demux: typefind"); if (GUINT32_FROM_LE (((guint32 *)data)[0]) != GST_RIFF_TAG_RIFF) return NULL; if (GUINT32_FROM_LE (((guint32 *)data)[2]) != GST_RIFF_RIFF_AVI) return NULL; new = GST_CAPS_NEW ("avi_type_find", "video/avi", "format", GST_PROPS_STRING ("AVI")); return new; } static gboolean gst_avi_demux_avih (GstAviDemux *avi_demux) { gst_riff_avih *avih; guint32 got_bytes; GstByteStream *bs = avi_demux->bs; got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&avih, sizeof (gst_riff_avih)); if (got_bytes == sizeof (gst_riff_avih)) { avi_demux->avih.us_frame = GUINT32_FROM_LE (avih->us_frame); avi_demux->avih.max_bps = GUINT32_FROM_LE (avih->max_bps); avi_demux->avih.pad_gran = GUINT32_FROM_LE (avih->pad_gran); avi_demux->avih.flags = GUINT32_FROM_LE (avih->flags); avi_demux->avih.tot_frames = GUINT32_FROM_LE (avih->tot_frames); avi_demux->avih.init_frames = GUINT32_FROM_LE (avih->init_frames); avi_demux->avih.streams = GUINT32_FROM_LE (avih->streams); avi_demux->avih.bufsize = GUINT32_FROM_LE (avih->bufsize); avi_demux->avih.width = GUINT32_FROM_LE (avih->width); avi_demux->avih.height = GUINT32_FROM_LE (avih->height); avi_demux->avih.scale = GUINT32_FROM_LE (avih->scale); avi_demux->avih.rate = GUINT32_FROM_LE (avih->rate); avi_demux->avih.start = GUINT32_FROM_LE (avih->start); avi_demux->avih.length = GUINT32_FROM_LE (avih->length); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: avih tag found"); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: us_frame %d", avi_demux->avih.us_frame); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: max_bps %d", avi_demux->avih.max_bps); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: pad_gran %d", avi_demux->avih.pad_gran); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: flags 0x%08x", avi_demux->avih.flags); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: tot_frames %d", avi_demux->avih.tot_frames); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: init_frames %d", avi_demux->avih.init_frames); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: streams %d", avi_demux->avih.streams); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: bufsize %d", avi_demux->avih.bufsize); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: width %d", avi_demux->avih.width); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: height %d", avi_demux->avih.height); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: scale %d", avi_demux->avih.scale); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: rate %d", avi_demux->avih.rate); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: start %d", avi_demux->avih.start); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: length %d", avi_demux->avih.length); return TRUE; } return FALSE; } static gboolean gst_avi_demux_strh (GstAviDemux *avi_demux) { gst_riff_strh *strh; GstByteStream *bs = avi_demux->bs; guint32 got_bytes; got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&strh, sizeof (gst_riff_strh)); if (got_bytes == sizeof (gst_riff_strh)) { avi_stream_context *target; avi_demux->fcc_type = GUINT32_FROM_LE (strh->type); target = &avi_demux->stream[avi_demux->num_streams]; target->num = avi_demux->num_streams; target->strh.type = avi_demux->fcc_type; target->strh.fcc_handler = GUINT32_FROM_LE (strh->fcc_handler); target->strh.flags = GUINT32_FROM_LE (strh->flags); target->strh.priority = GUINT32_FROM_LE (strh->priority); target->strh.init_frames = GUINT32_FROM_LE (strh->init_frames); target->strh.scale = GUINT32_FROM_LE (strh->scale); target->strh.rate = GUINT32_FROM_LE (strh->rate); target->strh.start = GUINT32_FROM_LE (strh->start); target->strh.length = GUINT32_FROM_LE (strh->length); target->strh.bufsize = GUINT32_FROM_LE (strh->bufsize); target->strh.quality = GUINT32_FROM_LE (strh->quality); target->strh.samplesize = GUINT32_FROM_LE (strh->samplesize); if (!target->strh.scale) target->strh.scale = 1; /* avoid division by zero */ if (!target->strh.rate) target->strh.rate = 1; /* avoid division by zero */ GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: strh tag found"); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: type 0x%08x (%s)", target->strh.type, gst_riff_id_to_fourcc (strh->type)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: fcc_handler 0x%08x (%s)", target->strh.fcc_handler, gst_riff_id_to_fourcc (strh->fcc_handler)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: flags 0x%08x", strh->flags); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: priority %d", target->strh.priority); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: init_frames %d", target->strh.init_frames); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: scale %d", target->strh.scale); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: rate %d", target->strh.rate); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: start %d", target->strh.start); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: length %d", target->strh.length); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: bufsize %d", target->strh.bufsize); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: quality %d", target->strh.quality); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: samplesize %d", target->strh.samplesize); target->delay = 0LL; target->total_bytes = 0LL; target->total_frames = 0; target->skip = 0; return TRUE; } return FALSE; } static void gst_avi_demux_strf_vids (GstAviDemux *avi_demux) { gst_riff_strf_vids *strf; GstPad *srcpad; GstByteStream *bs = avi_demux->bs; GstCaps *newcaps = NULL, *capslist = NULL; avi_stream_context *stream; guint32 got_bytes; got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&strf, sizeof (gst_riff_strf_vids)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: strf tag found in context vids"); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: size %d", GUINT32_FROM_LE (strf->size)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: width %d", GUINT32_FROM_LE (strf->width)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: height %d", GUINT32_FROM_LE (strf->height)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: planes %d", GUINT16_FROM_LE (strf->planes)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: bit_cnt %d", GUINT16_FROM_LE (strf->bit_cnt)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: compression 0x%08x (%s)", GUINT32_FROM_LE (strf->compression), gst_riff_id_to_fourcc (strf->compression)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: image_size %d", GUINT32_FROM_LE (strf->image_size)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: xpels_meter %d", GUINT32_FROM_LE (strf->xpels_meter)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: ypels_meter %d", GUINT32_FROM_LE (strf->ypels_meter)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: num_colors %d", GUINT32_FROM_LE (strf->num_colors)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: imp_colors %d", GUINT32_FROM_LE (strf->imp_colors)); srcpad = gst_pad_new_from_template ( GST_PAD_TEMPLATE_GET (src_video_templ), g_strdup_printf ("video_%02d", avi_demux->num_v_streams)); capslist = gst_caps_append(NULL, GST_CAPS_NEW ( "avidemux_video_src", "video/avi", "format", GST_PROPS_STRING ("strf_vids"), "size", GST_PROPS_INT (GUINT32_FROM_LE (strf->size)), "width", GST_PROPS_INT (GUINT32_FROM_LE (strf->width)), "height", GST_PROPS_INT (GUINT32_FROM_LE (strf->height)), "planes", GST_PROPS_INT (GUINT16_FROM_LE (strf->planes)), "bit_cnt", GST_PROPS_INT (GUINT16_FROM_LE (strf->bit_cnt)), "compression", GST_PROPS_FOURCC (GUINT32_FROM_LE (strf->compression)), "image_size", GST_PROPS_INT (GUINT32_FROM_LE (strf->image_size)), "xpels_meter", GST_PROPS_INT (GUINT32_FROM_LE (strf->xpels_meter)), "ypels_meter", GST_PROPS_INT (GUINT32_FROM_LE (strf->ypels_meter)), "num_colors", GST_PROPS_INT (GUINT32_FROM_LE (strf->num_colors)), "imp_colors", GST_PROPS_INT (GUINT32_FROM_LE (strf->imp_colors)) )); /* let's try some gstreamer-like mime-type caps */ switch (GUINT32_FROM_LE(strf->compression)) { case GST_MAKE_FOURCC('I','4','2','0'): case GST_MAKE_FOURCC('Y','U','Y','2'): newcaps = GST_CAPS_NEW ( "avidemux_video_src", "video/raw", "format", GST_PROPS_FOURCC(GUINT32_FROM_LE(strf->compression)), "width", GST_PROPS_INT(strf->width), "height", GST_PROPS_INT(strf->height) ); break; case GST_MAKE_FOURCC('M','J','P','G'): newcaps = GST_CAPS_NEW ( "avidemux_video_src", "video/jpeg", "width", GST_PROPS_INT(strf->width), "height", GST_PROPS_INT(strf->height) ); break; case GST_MAKE_FOURCC('d','v','s','d'): newcaps = GST_CAPS_NEW ( "avidemux_video_src", "video/dv", "format", GST_PROPS_STRING("NTSC"), /* FIXME??? */ "width", GST_PROPS_INT(strf->width), "height", GST_PROPS_INT(strf->height) ); break; } if (newcaps) capslist = gst_caps_append (capslist, newcaps); gst_pad_try_set_caps (srcpad, capslist); gst_pad_set_event_function (srcpad, gst_avi_demux_handle_src_event); gst_pad_set_query_function (srcpad, gst_avi_demux_handle_src_query); gst_pad_set_convert_function (srcpad, gst_avi_demux_src_convert); stream = &avi_demux->stream[avi_demux->num_streams]; stream->pad = srcpad; gst_pad_set_element_private (srcpad, stream); avi_demux->num_streams++; avi_demux->num_v_streams++; gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad); } static void gst_avi_demux_strf_auds (GstAviDemux *avi_demux) { gst_riff_strf_auds *strf; GstPad *srcpad; GstByteStream *bs = avi_demux->bs; GstCaps *newcaps = NULL, *capslist = NULL; avi_stream_context *stream; guint32 got_bytes; got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&strf, sizeof (gst_riff_strf_auds)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: strf tag found in context auds"); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: format %d", GUINT16_FROM_LE (strf->format)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: channels %d", GUINT16_FROM_LE (strf->channels)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: rate %d", GUINT32_FROM_LE (strf->rate)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: av_bps %d", GUINT32_FROM_LE (strf->av_bps)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: blockalign %d", GUINT16_FROM_LE (strf->blockalign)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: size %d", GUINT16_FROM_LE (strf->size)); srcpad = gst_pad_new_from_template ( GST_PAD_TEMPLATE_GET (src_audio_templ), g_strdup_printf ("audio_%02d", avi_demux->num_a_streams)); capslist = gst_caps_append(NULL, GST_CAPS_NEW ( "avidemux_audio_src", "video/avi", "format", GST_PROPS_STRING ("strf_auds"), "fmt", GST_PROPS_INT (GUINT16_FROM_LE (strf->format)), "channels", GST_PROPS_INT (GUINT16_FROM_LE (strf->channels)), "rate", GST_PROPS_INT (GUINT32_FROM_LE (strf->rate)), "av_bps", GST_PROPS_INT (GUINT32_FROM_LE (strf->av_bps)), "blockalign", GST_PROPS_INT (GUINT16_FROM_LE (strf->blockalign)), "size", GST_PROPS_INT (GUINT16_FROM_LE (strf->size)) )); /* let's try some gstreamer-formatted mime types */ switch (GUINT16_FROM_LE(strf->format)) { case 0x0050: case 0x0055: /* mp3 */ newcaps = gst_caps_new ("avidemux_audio_src", "audio/mp3", NULL); break; case 0x0001: /* PCM/wav */ newcaps = gst_caps_new ("avidemux_audio_src", "audio/raw", gst_props_new ( "format", GST_PROPS_STRING ("int"), "law", GST_PROPS_INT (0), "endianness", GST_PROPS_INT (G_BYTE_ORDER), "signed", GST_PROPS_BOOLEAN ((GUINT16_FROM_LE (strf->size) != 8)), "width", GST_PROPS_INT ((GUINT16_FROM_LE (strf->blockalign)*8) / GUINT16_FROM_LE (strf->channels)), "depth", GST_PROPS_INT (GUINT16_FROM_LE (strf->size)), "rate", GST_PROPS_INT (GUINT32_FROM_LE (strf->rate)), "channels", GST_PROPS_INT (GUINT16_FROM_LE (strf->channels)), NULL )); break; } if (newcaps) capslist = gst_caps_append(capslist, newcaps); gst_pad_try_set_caps(srcpad, capslist); gst_pad_set_event_function (srcpad, gst_avi_demux_handle_src_event); gst_pad_set_query_function (srcpad, gst_avi_demux_handle_src_query); gst_pad_set_convert_function (srcpad, gst_avi_demux_src_convert); stream = &avi_demux->stream[avi_demux->num_streams]; stream->pad = srcpad; gst_pad_set_element_private (srcpad, stream); avi_demux->num_streams++; avi_demux->num_a_streams++; gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad); } static void gst_avi_demux_strf_iavs (GstAviDemux *avi_demux) { gst_riff_strf_iavs *strf; GstPad *srcpad; GstByteStream *bs = avi_demux->bs; GstCaps *newcaps = NULL, *capslist = NULL; avi_stream_context *stream; guint32 got_bytes; got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&strf, sizeof (gst_riff_strf_iavs)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: strf tag found in context iavs"); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVAAuxSrc %08x", GUINT32_FROM_LE (strf->DVAAuxSrc)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVAAuxCtl %08x", GUINT32_FROM_LE (strf->DVAAuxCtl)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVAAuxSrc1 %08x", GUINT32_FROM_LE (strf->DVAAuxSrc1)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVAAuxCtl1 %08x", GUINT32_FROM_LE (strf->DVAAuxCtl1)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVVAuxSrc %08x", GUINT32_FROM_LE (strf->DVVAuxSrc)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVVAuxCtl %08x", GUINT32_FROM_LE (strf->DVVAuxCtl)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVReserved1 %08x", GUINT32_FROM_LE (strf->DVReserved1)); GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux: DVReserved2 %08x", GUINT32_FROM_LE (strf->DVReserved2)); srcpad = gst_pad_new_from_template ( GST_PAD_TEMPLATE_GET (src_video_templ), g_strdup_printf ("video_%02d", avi_demux->num_v_streams)); capslist = gst_caps_append(NULL, GST_CAPS_NEW ( "avidemux_video_src", "video/avi", "format", GST_PROPS_STRING ("strf_iavs"), "DVAAuxSrc", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVAAuxSrc)), "DVAAuxCtl", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVAAuxCtl)), "DVAAuxSrc1", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVAAuxSrc1)), "DVAAuxCtl1", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVAAuxCtl1)), "DVVAuxSrc", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVVAuxSrc)), "DVVAuxCtl", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVVAuxCtl)), "DVReserved1", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVReserved1)), "DVReserved2", GST_PROPS_INT (GUINT32_FROM_LE (strf->DVReserved2)) )); newcaps = gst_caps_new ("avi_type_dv", "video/dv", gst_props_new ( "format", GST_PROPS_STRING ("NTSC"), /* FIXME??? */ NULL)); if (newcaps) capslist = gst_caps_append(capslist, newcaps); gst_pad_try_set_caps(srcpad, capslist); gst_pad_set_event_function (srcpad, gst_avi_demux_handle_src_event); gst_pad_set_query_function (srcpad, gst_avi_demux_handle_src_query); gst_pad_set_convert_function (srcpad, gst_avi_demux_src_convert); stream = &avi_demux->stream[avi_demux->num_streams]; stream->pad = srcpad; gst_pad_set_element_private (srcpad, stream); avi_demux->num_streams++; avi_demux->num_v_streams++; gst_element_add_pad (GST_ELEMENT (avi_demux), srcpad); } static void gst_avi_debug_entry (const gchar *prefix, gst_avi_index_entry *entry) { GST_DEBUG (0, "%s: %05d %d %08llx %05d %08lld %08x %08x %08x", prefix, entry->index_nr, entry->stream_nr, entry->bytes_before, entry->frames_before, entry->ts, entry->flags, entry->offset, entry->size); } static void gst_avi_demux_parse_index (GstAviDemux *avi_demux, gulong filepos, gulong offset) { GstBuffer *buf; gulong index_size; guint32 got_bytes; gint i; gst_riff_index_entry *entry; if (!gst_bytestream_seek (avi_demux->bs, filepos + offset, GST_SEEK_METHOD_SET)) { GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: could not seek to index"); return; } got_bytes = gst_bytestream_read (avi_demux->bs, &buf, 8); while (got_bytes < 8) { guint32 remaining; GstEvent *event; gst_bytestream_get_status (avi_demux->bs, &remaining, &event); got_bytes = gst_bytestream_read (avi_demux->bs, &buf, 8); } if (GST_BUFFER_OFFSET (buf) != filepos + offset || GST_BUFFER_SIZE (buf) != 8) { GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: could not get index"); goto end; } if (gst_riff_fourcc_to_id (GST_BUFFER_DATA (buf)) != GST_RIFF_TAG_idx1) { GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: no index found"); goto end; } index_size = GUINT32_FROM_LE(*(guint32 *)(GST_BUFFER_DATA (buf) + 4)); gst_buffer_unref (buf); got_bytes = gst_bytestream_read (avi_demux->bs, &buf, index_size); if (got_bytes < index_size) { GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: error reading index"); goto end; } avi_demux->index_size = index_size/sizeof(gst_riff_index_entry); GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: index size %lu", avi_demux->index_size); avi_demux->index_entries = g_malloc (avi_demux->index_size * sizeof (gst_avi_index_entry)); entry = (gst_riff_index_entry *) GST_BUFFER_DATA (buf); for (i = 0; i < avi_demux->index_size; i++) { avi_stream_context *stream; gint stream_nr; gst_avi_index_entry *target = &avi_demux->index_entries[i]; GstFormat format; stream_nr = CHUNKID_TO_STREAMNR (entry[i].id); target->stream_nr = stream_nr; stream = &avi_demux->stream[stream_nr]; target->index_nr = i; target->flags = entry[i].flags; target->size = entry[i].size; target->offset = entry[i].offset; target->bytes_before = stream->total_bytes; target->frames_before = stream->total_frames; format = GST_FORMAT_TIME; if (stream->strh.type == GST_RIFF_FCC_auds) { gst_pad_convert (stream->pad, GST_FORMAT_BYTES, stream->total_bytes, &format, &target->ts); } else { gst_pad_convert (stream->pad, GST_FORMAT_UNITS, stream->total_frames, &format, &target->ts); } gst_avi_debug_entry ("index", target); stream->total_bytes += target->size; stream->total_frames++; } gst_buffer_unref (buf); end: avi_demux->index_offset = filepos; GST_DEBUG (GST_CAT_PLUGIN_INFO, "index offset at %08lx", filepos); if (!gst_bytestream_seek (avi_demux->bs, filepos, GST_SEEK_METHOD_SET)) { GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: could not seek back to movi"); return; } } static gst_avi_index_entry* gst_avi_demux_index_next (GstAviDemux *avi_demux, gint stream_nr, gint start, guint32 flags) { gint i; gst_avi_index_entry *entry = NULL; for (i = start; i < avi_demux->index_size; i++) { entry = &avi_demux->index_entries[i]; if (entry->stream_nr == stream_nr && (entry->flags & flags) == flags) { break; } } return entry; } static gst_avi_index_entry* gst_avi_demux_index_entry_for_time (GstAviDemux *avi_demux, gint stream_nr, guint64 time, guint32 flags) { gst_avi_index_entry *entry = NULL, *last_entry = NULL; gint i; i = -1; do { entry = gst_avi_demux_index_next (avi_demux, stream_nr, i + 1, flags); if (!entry) return NULL; i = entry->index_nr; if (entry->ts <= time) { last_entry = entry; } } while (entry->ts <= time); return last_entry; } static gboolean gst_avi_demux_src_convert (GstPad *pad, GstFormat src_format, gint64 src_value, GstFormat *dest_format, gint64 *dest_value) { gboolean res = TRUE; avi_stream_context *stream = gst_pad_get_element_private (pad); switch (src_format) { case GST_FORMAT_TIME: switch (*dest_format) { case GST_FORMAT_BYTES: if (stream->strh.type == GST_RIFF_FCC_auds) *dest_value = src_value * stream->strh.rate / (stream->strh.scale * GST_SECOND); else res = FALSE; break; case GST_FORMAT_DEFAULT: *dest_format = GST_FORMAT_UNITS; case GST_FORMAT_UNITS: *dest_value = src_value * stream->strh.rate / (stream->strh.scale * GST_SECOND); break; default: res = FALSE; break; } break; case GST_FORMAT_BYTES: switch (*dest_format) { case GST_FORMAT_TIME: if (stream->strh.type == GST_RIFF_FCC_auds) *dest_value = src_value * GST_SECOND * stream->strh.scale / stream->strh.rate; else res = FALSE; default: res = FALSE; break; } break; case GST_FORMAT_UNITS: switch (*dest_format) { case GST_FORMAT_TIME: *dest_value = src_value * GST_SECOND * stream->strh.scale / stream->strh.rate; break; default: res = FALSE; break; } break; default: res = FALSE; } return res; } static gboolean gst_avi_demux_handle_src_query (GstPad *pad, GstPadQueryType type, GstFormat *format, gint64 *value) { gboolean res = TRUE; //GstAviDemux *avi_demux = GST_AVI_DEMUX (gst_pad_get_parent (pad)); avi_stream_context *stream = gst_pad_get_element_private (pad); switch (type) { case GST_PAD_QUERY_TOTAL: switch (*format) { case GST_FORMAT_DEFAULT: *format = GST_FORMAT_TIME; /* fall through */ case GST_FORMAT_TIME: *value = GST_SECOND * stream->strh.scale * stream->strh.length / stream->strh.rate; break; case GST_FORMAT_BYTES: if (stream->strh.type == GST_RIFF_FCC_auds) *value = stream->strh.length; else res = FALSE; break; case GST_FORMAT_UNITS: if (stream->strh.type == GST_RIFF_FCC_auds) *value = stream->strh.length * stream->strh.samplesize; else if (stream->strh.type == GST_RIFF_FCC_vids) *value = stream->strh.length; else res = FALSE; break; default: res = FALSE; break; } break; case GST_PAD_QUERY_POSITION: switch (*format) { case GST_FORMAT_DEFAULT: *format = GST_FORMAT_TIME; /* fall through */ case GST_FORMAT_TIME: if (stream->strh.type == GST_RIFF_FCC_vids) *value = stream->current_frame * GST_SECOND * stream->strh.scale / stream->strh.rate; else *value = stream->current_byte * GST_SECOND * stream->strh.scale / stream->strh.rate; break; case GST_FORMAT_BYTES: *value = stream->current_byte; break; case GST_FORMAT_UNITS: if (stream->strh.type == GST_RIFF_FCC_auds) *value = stream->current_byte * stream->strh.samplesize; else if (stream->strh.type == GST_RIFF_FCC_vids) *value = stream->current_frame; else res = FALSE; break; default: res = FALSE; break; } break; default: res = FALSE; break; } return res; } static gint32 gst_avi_demux_sync_streams (GstAviDemux *avi_demux, guint64 time) { gint i; guint64 min_index = -1; avi_stream_context *stream; gst_avi_index_entry *entry; for (i = 0; i < avi_demux->num_streams; i++) { stream = &avi_demux->stream[i]; GST_DEBUG (0, "finding %d for time %lld", i, time); entry = gst_avi_demux_index_entry_for_time (avi_demux, stream->num, time, GST_RIFF_IF_KEYFRAME); if (entry) { gst_avi_debug_entry ("sync entry", entry); min_index = MIN (entry->index_nr, min_index); } } /* now we know the entry we need to sync on. calculate number of frames to * skip fro there on and the stream stats */ for (i = 0; i < avi_demux->num_streams; i++) { gst_avi_index_entry *next_entry; stream = &avi_demux->stream[i]; /* next entry */ next_entry = gst_avi_demux_index_next (avi_demux, stream->num, min_index, 0); /* next entry with keyframe */ entry = gst_avi_demux_index_next (avi_demux, stream->num, min_index, GST_RIFF_IF_KEYFRAME); gst_avi_debug_entry ("final sync", entry); stream->current_byte = next_entry->bytes_before; stream->current_frame = next_entry->frames_before; stream->skip = entry->frames_before - next_entry->frames_before; GST_DEBUG (0, "%d skip %d", stream->num, stream->skip); } return min_index; } static gboolean gst_avi_demux_send_event (GstElement *element, GstEvent *event) { GList *pads; pads = gst_element_get_pad_list (element); while (pads) { GstPad *pad = GST_PAD (pads->data); if (GST_PAD_DIRECTION (pad) == GST_PAD_SRC) { return gst_avi_demux_handle_src_event (pad, event); } pads = g_list_next (pads); } return FALSE; } static gboolean gst_avi_demux_handle_src_event (GstPad *pad, GstEvent *event) { gboolean res = TRUE; GstAviDemux *avi_demux = GST_AVI_DEMUX (gst_pad_get_parent (pad)); avi_stream_context *stream; stream = gst_pad_get_element_private (pad); switch (GST_EVENT_TYPE (event)) { case GST_EVENT_SEEK: switch (GST_EVENT_SEEK_FORMAT (event)) { case GST_FORMAT_BYTES: case GST_FORMAT_UNITS: break; case GST_FORMAT_TIME: { gst_avi_index_entry *seek_entry, *entry; gint64 desired_offset = GST_EVENT_SEEK_OFFSET (event); guint32 flags; guint64 min_index; /* no seek on audio yet */ if (stream->strh.type == GST_RIFF_FCC_auds) return FALSE; flags = GST_RIFF_IF_KEYFRAME; entry = gst_avi_demux_index_entry_for_time (avi_demux, stream->num, desired_offset, GST_RIFF_IF_KEYFRAME); if (entry) { desired_offset = entry->ts; min_index = gst_avi_demux_sync_streams (avi_demux, desired_offset); seek_entry = &avi_demux->index_entries[min_index]; avi_demux->seek_offset = seek_entry->offset + avi_demux->index_offset; avi_demux->seek_pending = TRUE; avi_demux->last_seek = seek_entry->ts; } else { res = FALSE; } break; } default: res = FALSE; break; } break; default: res = FALSE; break; } return res; } static gboolean gst_avi_demux_handle_sink_event (GstAviDemux *avi_demux) { guint32 remaining; GstEvent *event; GstEventType type; gst_bytestream_get_status (avi_demux->bs, &remaining, &event); type = event? GST_EVENT_TYPE (event) : GST_EVENT_UNKNOWN; switch (type) { case GST_EVENT_EOS: gst_pad_event_default (avi_demux->sinkpad, event); break; case GST_EVENT_SEEK: g_warning ("seek event"); break; case GST_EVENT_FLUSH: g_warning ("flush event"); break; case GST_EVENT_DISCONTINUOUS: { gint i; for (i = 0; i < avi_demux->num_streams; i++) { avi_stream_context *stream = &avi_demux->stream[i]; event = gst_event_new_discontinuous (FALSE, GST_FORMAT_TIME, avi_demux->last_seek + stream->delay, NULL); gst_pad_push (stream->pad, GST_BUFFER (event)); } break; } default: g_warning ("unhandled event %d", type); break; } return TRUE; } static inline gboolean gst_avi_demux_read_chunk (GstAviDemux *avi_demux, guint32 *id, guint32 *size) { gst_riff_chunk *chunk; GstByteStream *bs = avi_demux->bs; guint32 got_bytes; if (avi_demux->seek_pending) { GST_DEBUG (0, "avidemux: seek pending to %lld %08llx", avi_demux->seek_offset, avi_demux->seek_offset); if (!gst_bytestream_seek (avi_demux->bs, avi_demux->seek_offset, GST_SEEK_METHOD_SET)) { GST_INFO (GST_CAT_PLUGIN_INFO, "avidemux: could not seek"); } avi_demux->seek_pending = FALSE; } do { got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&chunk, sizeof (gst_riff_chunk)); if (got_bytes == sizeof (gst_riff_chunk)) { *id = GUINT32_FROM_LE (chunk->id); *size = GUINT32_FROM_LE (chunk->size); gst_bytestream_flush (bs, sizeof (gst_riff_chunk)); return TRUE; } } while (gst_avi_demux_handle_sink_event (avi_demux)); return TRUE; } static gboolean gst_avi_demux_process_chunk (GstAviDemux *avi_demux, guint64 *filepos, guint32 desired_tag, gint rec_depth, guint32 *chunksize) { guint32 chunkid; GstByteStream *bs = avi_demux->bs; if (!gst_avi_demux_read_chunk (avi_demux, &chunkid, chunksize)) { g_print (" ***** Error reading chunk at filepos 0x%08llx\n", *filepos); return FALSE; } if (desired_tag) { /* do we have to test identity? */ if (desired_tag != chunkid) { g_print ("\n\n *** Error: Expected chunk '%s', found '%s'\n", gst_riff_id_to_fourcc (desired_tag), gst_riff_id_to_fourcc (chunkid)); return FALSE; } } GST_INFO (GST_CAT_PLUGIN_INFO, "chunkid %s, size %08x, filepos %08llx", gst_riff_id_to_fourcc (chunkid), *chunksize, *filepos); *filepos += (sizeof (guint32) + sizeof (guint32)); switch (chunkid) { case GST_RIFF_TAG_RIFF: case GST_RIFF_TAG_LIST: { guint32 datashowed; guint32 subchunksize = 0; /* size of a read subchunk */ gchar *formtype; guint32 got_bytes; got_bytes = gst_bytestream_peek_bytes (bs, (guint8**)&formtype, sizeof (guint32)); if (got_bytes < sizeof(guint32)) return FALSE; switch (GUINT32_FROM_LE (*((guint32*)formtype))) { case GST_RIFF_LIST_movi: gst_avi_demux_parse_index (avi_demux, *filepos, *chunksize); while (!gst_bytestream_flush (bs, sizeof (guint32))) { guint32 remaining; GstEvent *event; gst_bytestream_get_status (avi_demux->bs, &remaining, &event); } break; default: /* flush the form type */ gst_bytestream_flush_fast (bs, sizeof (guint32)); break; } datashowed = sizeof (guint32); /* we showed the form type */ *filepos += datashowed; /* for the rest of the routine */ while (datashowed < *chunksize) { /* while not showed all: */ GST_INFO (GST_CAT_PLUGIN_INFO, "process chunk filepos %08llx", *filepos); /* recurse for subchunks of RIFF and LIST chunks: */ if (!gst_avi_demux_process_chunk (avi_demux, filepos, 0, rec_depth + 1, &subchunksize)) { g_print (" ***** Error processing chunk at filepos 0x%08llxi %u %u\n", *filepos, *chunksize, datashowed); return FALSE; } subchunksize = ((subchunksize + 1) & ~1); datashowed += (sizeof (guint32) + sizeof (guint32) + subchunksize); GST_INFO (GST_CAT_PLUGIN_INFO, "process chunk done filepos %08llx, subchunksize %08x", *filepos, subchunksize); } if (datashowed != *chunksize) { g_warning ("error parsing AVI %u %u", datashowed, *chunksize); } goto done; } case GST_RIFF_TAG_avih: gst_avi_demux_avih (avi_demux); break; case GST_RIFF_TAG_strh: { gst_avi_demux_strh (avi_demux); break; } case GST_RIFF_TAG_strf: switch (avi_demux->fcc_type) { case GST_RIFF_FCC_vids: gst_avi_demux_strf_vids (avi_demux); break; case GST_RIFF_FCC_auds: gst_avi_demux_strf_auds (avi_demux); break; case GST_RIFF_FCC_iavs: gst_avi_demux_strf_iavs (avi_demux); break; case GST_RIFF_FCC_pads: case GST_RIFF_FCC_txts: default: GST_INFO (GST_CAT_PLUGIN_INFO, "gst_avi_demux_chain: strh type %s not supported", gst_riff_id_to_fourcc (avi_demux->fcc_type)); break; } break; case GST_RIFF_00dc: case GST_RIFF_00db: case GST_RIFF_00__: case GST_RIFF_01wb: { gint stream_id; avi_stream_context *stream; gint64 next_ts; GstFormat format; stream_id = CHUNKID_TO_STREAMNR (chunkid); stream = &avi_demux->stream[stream_id]; GST_DEBUG (0,"gst_avi_demux_chain: tag found %08x size %08x", chunkid, *chunksize); format = GST_FORMAT_TIME; gst_pad_query (stream->pad, GST_PAD_QUERY_POSITION, &format, &next_ts); if (stream->strh.init_frames == stream->current_frame && stream->delay==0) stream->delay = next_ts; if (stream->skip) { stream->skip--; } else { if (GST_PAD_IS_CONNECTED (stream->pad)) { GstBuffer *buf; guint32 got_bytes; if (*chunksize) { got_bytes = gst_bytestream_peek (bs, &buf, *chunksize); GST_BUFFER_TIMESTAMP (buf) = next_ts; if (stream->need_flush) { /* FIXME, do some flush event here */ stream->need_flush = FALSE; } GST_DEBUG (0, "send stream %d: %lld %d %lld %08x", stream_id, next_ts, stream->current_frame, stream->delay, *chunksize); gst_pad_push(stream->pad, buf); } } } stream->current_frame++; stream->current_byte += *chunksize; *chunksize = (*chunksize + 1) & ~1; break; } default: GST_DEBUG (0, " ***** unknown chunkid %08x (%s)", chunkid, gst_riff_id_to_fourcc (chunkid)); *chunksize = (*chunksize + 1) & ~1; break; } GST_INFO (GST_CAT_PLUGIN_INFO, "chunkid %s, flush %08x, filepos %08llx", gst_riff_id_to_fourcc (chunkid), *chunksize, *filepos); *filepos += *chunksize; if (!gst_bytestream_flush (bs, *chunksize)) { return gst_avi_demux_handle_sink_event (avi_demux); } done: /* we are running in an infinite loop, we need to _yield * from time to time */ gst_element_yield (GST_ELEMENT (avi_demux)); return TRUE; } static void gst_avi_demux_loop (GstElement *element) { GstAviDemux *avi_demux; guint32 chunksize; guint64 filepos = 0; g_return_if_fail (element != NULL); g_return_if_fail (GST_IS_AVI_DEMUX (element)); avi_demux = GST_AVI_DEMUX (element); /* this is basically an infinite loop */ if (!gst_avi_demux_process_chunk (avi_demux, &filepos, GST_RIFF_TAG_RIFF, 0, &chunksize)) { gst_element_error (element, "This doesn't appear to be an AVI file"); return; } /* if we exit the loop we are EOS */ gst_pad_event_default (avi_demux->sinkpad, gst_event_new (GST_EVENT_EOS)); } static GstElementStateReturn gst_avi_demux_change_state (GstElement *element) { GstAviDemux *avi_demux = GST_AVI_DEMUX (element); switch (GST_STATE_TRANSITION (element)) { case GST_STATE_NULL_TO_READY: break; case GST_STATE_READY_TO_PAUSED: avi_demux->bs = gst_bytestream_new (avi_demux->sinkpad); break; case GST_STATE_PAUSED_TO_PLAYING: break; case GST_STATE_PLAYING_TO_PAUSED: break; case GST_STATE_PAUSED_TO_READY: gst_bytestream_destroy (avi_demux->bs); break; case GST_STATE_READY_TO_NULL: break; default: break; } parent_class->change_state (element); return GST_STATE_SUCCESS; } static void gst_avi_demux_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { GstAviDemux *src; g_return_if_fail (GST_IS_AVI_DEMUX (object)); src = GST_AVI_DEMUX (object); switch (prop_id) { case ARG_BITRATE: break; default: break; } } static gboolean plugin_init (GModule *module, GstPlugin *plugin) { GstElementFactory *factory; GstTypeFactory *type; /* this filter needs the riff parser */ if (!gst_library_load ("gstbytestream")) { gst_info("avidemux: could not load support library: 'gstbytestream'\n"); return FALSE; } if (!gst_library_load ("gstriff")) { gst_info("avidemux: could not load support library: 'gstriff'\n"); return FALSE; } /* create an elementfactory for the avi_demux element */ factory = gst_element_factory_new ("avidemux",GST_TYPE_AVI_DEMUX, &gst_avi_demux_details); g_return_val_if_fail (factory != NULL, FALSE); gst_element_factory_set_rank (factory, GST_ELEMENT_RANK_PRIMARY); gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (src_audio_templ)); gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (src_video_templ)); gst_element_factory_add_pad_template (factory, GST_PAD_TEMPLATE_GET (sink_templ)); type = gst_type_factory_new (&avidefinition); gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (type)); gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory)); return TRUE; } GstPluginDesc plugin_desc = { GST_VERSION_MAJOR, GST_VERSION_MINOR, "avidemux", plugin_init };