Original commit message from CVS:
make GST_PLUGIN_LDFLAGS only be flags; GST_LIBS should be
added manually to each Makefile.am so we are sure it goes
*last* and doesn't add -L flags before linking in libs of our
own, like, say, internal .la libs, that then accidentally pick
up the installed copy.
Original commit message from CVS:
* ext/theora/theoradec.c: (theora_dec_src_getcaps),
(theora_dec_push), (theora_handle_data_packet):
Prepare for better timestamp fix later.
* gst/audioconvert/gstaudioconvert.c:
List most accurate caps first
* gst/videotestsrc/gstvideotestsrc.c: (gst_videotestsrc_loop):
Use proper pad task function.
* sys/xvimage/xvimagesink.c: (gst_xvimagesink_xvimage_new),
(gst_xvimagesink_show_frame):
Fix deadlock when alloc failed.
Original commit message from CVS:
2005-07-01 Andy Wingo <wingo@pobox.com>
* ext/theora/theoradec.c (theora_dec_src_getcaps): Implement a
getcaps to do explicit caps. Needs to be done in all decoders,
possibly via a base class.
* configure.ac (GST_PLUGIN_LDFLAGS): Add videoscale.
* ext/ogg/gstoggdemux.c (gst_ogg_pad_typefind): No need to set
caps on the sink pad, just rely on the pad template. Also, setting
ANY caps on a pad is not valid because the caps are not fixed.
* sys/ximage/ximagesink.c (gst_ximagesink_buffer_alloc): Set the
caps on the buffer, and get the width from the desired_caps if
they're set.
(gst_ximagesink_renegotiate_size): Implement via setting the
desired_caps on the ximagesink.
(gst_ximagesink_setcaps): Only reset the width of the player if it
wasn't already set. Not sure if this is right.
(gst_ximagesink_show_frame): Memcpy only for normal buffers.
* sys/ximage/ximagesink.h (desired_caps): New field, is the caps
that the user wants. NULL unless the window has been resized.
* gst/volume/gstvolume.c (volume_transform): Adapt to
basetransform refcount changes.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_pad_submit_packet):
If we're building a chain we are not in an error case
when we queue a buffer.
Original commit message from CVS:
2005-06-27 Andy Wingo <wingo@pobox.com>
* gst/videotestsrc/gstvideotestsrc.c
(gst_videotestsrc_activate_push): Activation API changes.
* gst/playback/gstdecodebin.c (gst_decode_bin_change_state)
(gst_decode_bin_dispose): Free dynamics in READY->NULL, because
they have refs on the decodebin.
* ext/ogg/gstoggdemux.c (gst_ogg_pad_class_init): Ref the right
parent class.
(gst_ogg_pad_typefind): Don't leak a pad ref.
(gst_ogg_chain_new_stream): gst_object_unref, not g_object_unref.
(gst_ogg_demux_sink_activate, gst_ogg_demux_sink_activate_push)
(gst_ogg_demux_sink_activate_pull): Changes for activation API.
Original commit message from CVS:
* ext/theora/theoradec.c: (theora_dec_change_state):
re-arranged call to parent's state change in order to avoid locks (or
worse).
Original commit message from CVS:
* ext/theora/theoraenc.c: (theora_set_header_on_caps):
* ext/vorbis/vorbisenc.c: (gst_vorbisenc_set_header_on_caps):
Set buffers on caps as miniobjects and not as boxed.
Original commit message from CVS:
* ext/alsa/gstalsasink.c: (set_hwparams), (gst_alsasink_open):
Get actual segment size and buffer size after opening
the device.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_demux_activate_chain),
(gst_ogg_demux_perform_seek), (gst_ogg_demux_clear_chains):
Also FLUSH upstream, makes the loop function exit faster.
* ext/theora/theoradec.c: (theora_dec_src_query):
Some more debug info in the query.
* sys/ximage/ximagesink.c: (gst_ximagesink_ximage_new),
(gst_ximagesink_setcaps):
Release lock on par error, better error reporting.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_pad_submit_packet),
(gst_ogg_demux_activate_chain), (gst_ogg_demux_chain),
(gst_ogg_demux_clear_chains), (gst_ogg_demux_change_state):
Clear chains in READY
Queue packets until the chain is activated.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_pad_dispose),
(gst_ogg_pad_typefind), (gst_ogg_pad_submit_packet),
(gst_ogg_chain_new_stream), (gst_ogg_demux_perform_seek),
(gst_ogg_demux_chain), (gst_ogg_demux_loop),
(gst_ogg_demux_sink_activate):
* ext/theora/theoradec.c: (theora_dec_src_event),
(theora_handle_comment_packet), (theora_dec_chain),
(theora_dec_change_state):
* ext/vorbis/vorbisdec.c: (vorbis_dec_sink_event),
(vorbis_handle_data_packet), (vorbis_dec_chain),
(vorbis_dec_change_state):
Remove STREAM locks as they are taken in core now.
Never set bogus granulepos on vorbis/theora.
Fix leaks in theoradec tag parsing.
Original commit message from CVS:
* ext/alsa/gstalsasink.c: (gst_alsasink_open):
Open non-blocking, set to blocking mode afterwards to avoid
lockups when audio device is busy.
Original commit message from CVS:
* ext/vorbis/vorbisdec.c (vorbis_handle_comment_packet): Post a
message to the bus with the tags. Still not sent downstream tho.
* gst/playback/gstdecodebin.c (remove_element_chain): Unref after
get_parent.
(remove_element_chain): Use OBJECT_PARENT instead of get_parent to
avoid refcounting hassles.
Original commit message from CVS:
* ext/vorbis/vorbisenc.c: (gst_vorbisenc_sink_setcaps),
(gst_vorbisenc_src_query), (gst_vorbisenc_sink_query),
(gst_vorbisenc_set_header_on_caps), (gst_vorbisenc_sink_event),
(gst_vorbisenc_chain):
* gst/audioconvert/gstaudioconvert.c: (gst_audio_convert_chain),
(gst_audio_convert_caps_remove_format_info),
(gst_audio_convert_getcaps), (gst_audio_convert_setcaps),
(gst_audio_convert_fixate), (gst_audio_convert_channels):
Make caps writable before writing to it.
Fix negotiation in audioconvert some more.
Original commit message from CVS:
2005-05-06 Zaheer Abbas Merali <zaheerabbas at merali dot org>
* ext/Makefile.am:
Disable cdparanoia until someone ports it!
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_pad_typefind),
(gst_ogg_demux_sink_activate):
And revert after wingo's revert.. sigh..
Original commit message from CVS:
* ext/theora/theoradec.c: (_inc_granulepos),
(theora_dec_src_event), (theora_dec_sink_event),
(theora_handle_comment_packet), (theora_handle_type_packet),
(theora_handle_header_packet), (theora_handle_data_packet),
(theora_dec_chain):
* ext/theora/theoraenc.c: (gst_theora_enc_class_init),
(gst_theora_enc_init), (theora_enc_sink_setcaps),
(theora_push_buffer), (theora_push_packet),
(theora_enc_sink_event), (theora_enc_chain),
(theora_enc_change_state), (theora_enc_set_property),
(theora_enc_get_property):
Added stream lock to decoder so that we can serialize
the discont event.
More theoraenc porting, recover from errors, do clean
shutdown.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_pad_typefind),
(gst_ogg_demux_perform_seek), (gst_ogg_demux_sink_activate):
* ext/vorbis/vorbisdec.c: (vorbis_dec_convert),
(vorbis_dec_src_query), (vorbis_dec_src_event),
(vorbis_dec_sink_event), (vorbis_handle_comment_packet),
(vorbis_handle_type_packet), (vorbis_handle_header_packet),
(copy_samples), (vorbis_handle_data_packet), (vorbis_dec_chain):
Don't crap out when seeking back to position 0.
Original commit message from CVS:
* ext/theora/theoradec.c: (_inc_granulepos),
(theora_dec_sink_event), (theora_handle_comment_packet),
(theora_handle_type_packet), (theora_handle_header_packet),
(theora_handle_data_packet), (theora_dec_chain),
(theora_dec_change_state):
Refactor a bit, use STREAM_LOCK.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_demux_factory_filter):
* gst/playback/gstdecodebin.c: (find_compatibles):
Work with staticpadtemplates in elementfactories.
Original commit message from CVS:
Plugin port to 0.9, ogg/theora playback should work in the seek
example now.
Removed old examples.
Removed old oggvorbisenc, renamed rawvorbisenc to vorbisenc as
explained in 0.9 TODO doc.
Original commit message from CVS:
* configure.ac: Pull in librfb from my CVS tree, because it is
too small and annoying to be separate. Move rfbsrc plugin
to gst/.
* ext/Makefile.am:
* ext/librfb/Makefile.am:
* ext/librfb/gstrfbsrc.c:
* gst/librfb/Makefile.am:
* gst/librfb/gstrfbsrc.c:
* gst/librfb/rfb.c:
* gst/librfb/rfb.h:
* gst/librfb/rfbbuffer.c:
* gst/librfb/rfbbuffer.h:
* gst/librfb/rfbbytestream.c:
* gst/librfb/rfbbytestream.h:
* gst/librfb/rfbcontext.h:
* gst/librfb/rfbdecoder.c:
* gst/librfb/rfbdecoder.h:
* gst/librfb/rfbutil.h:
Original commit message from CVS:
* ext/a52dec/gsta52dec.c: (gst_a52dec_push),
(gst_a52dec_handle_event), (gst_a52dec_chain):
Add some debug output. Check that a discont has a valid
time associated.
* ext/alsa/gstalsasink.c: (gst_alsa_sink_check_event),
(gst_alsa_sink_loop):
Ignore TAG events. A little extra debug for broken timestamps.
* ext/dvdnav/dvdnavsrc.c: (dvdnavsrc_init), (dvdnavsrc_loop),
(dvdnavsrc_change_state):
Ensure we send a discont to engage the link before we send any
other events.
* ext/dvdread/dvdreadsrc.c: (dvdreadsrc_init),
(dvdreadsrc_finalize), (_close), (_open), (_seek_title),
(_seek_chapter), (seek_sector), (dvdreadsrc_get),
(dvdreadsrc_uri_get_uri), (dvdreadsrc_uri_set_uri):
Handle URI of the form dvd://title[,chapter[,angle]]. Currently only
dvd://title works in totem because typefinding sends a seek that ends
up going back to chapter 1 regardless.
* ext/mpeg2dec/gstmpeg2dec.c:
* ext/mpeg2dec/gstmpeg2dec.h:
Output correct timestamps and handle disconts.
* ext/ogg/gstoggdemux.c: (get_relative):
Small guard against a null dereference.
* ext/pango/gsttextoverlay.c: (gst_textoverlay_finalize),
(gst_textoverlay_set_property):
Free memory when done. Don't call gst_event_filler_get_duration on
EOS events. Use GST_LOG and GST_WARNING instead of g_message and
g_warning.
* ext/smoothwave/gstsmoothwave.c: (gst_smoothwave_init),
(draw_line), (gst_smoothwave_dispose), (gst_sw_sinklink),
(gst_sw_srclink), (gst_smoothwave_chain):
Draw solid lines, prettier colours.
* gst/mpeg2sub/gstmpeg2subt.c: (gst_mpeg2subt_init):
Add a default palette that'll work for some movies.
* gst/mpegstream/gstdvddemux.c: (gst_dvd_demux_init),
(gst_dvd_demux_handle_dvd_event), (gst_dvd_demux_send_discont),
(gst_dvd_demux_send_subbuffer), (gst_dvd_demux_reset):
* gst/mpegstream/gstdvddemux.h:
* gst/mpegstream/gstmpegdemux.c: (gst_mpeg_demux_send_discont),
(gst_mpeg_demux_parse_syshead), (gst_mpeg_demux_parse_pes):
* gst/mpegstream/gstmpegparse.c: (gst_mpeg_parse_init),
(gst_mpeg_parse_handle_discont), (gst_mpeg_parse_parse_packhead):
* gst/mpegstream/gstmpegparse.h:
Use PTM/NAV events when for timestamp adjustment when connected to
dvdnavsrc. Don't use many discont events where one suffices.
* gst/playback/gstplaybasebin.c: (group_destroy),
(gen_preroll_element), (gst_play_base_bin_add_element):
* gst/playback/gstplaybasebin.h:
Make sure we remove subtitles from the same bin we put them in.
* gst/subparse/gstsubparse.c: (convert_encoding), (parse_subrip),
(gst_subparse_buffer_format_autodetect),
(gst_subparse_change_state):
Fix some memleaks and invalid accesses.
* gst/typefind/gsttypefindfunctions.c: (ogganx_type_find),
(oggskel_type_find), (cmml_type_find), (plugin_init):
Some typefind functions for Annodex v3.0 files
* gst/wavparse/gstwavparse.h:
GstRiffReadClass is the correct parent class.
Original commit message from CVS:
* ext/alsa/gstalsaclock.c: (gst_alsa_clock_wait):
Sanity check, don't wait endlessly since the clock might not
actually run at this point (which is a deadlock). Fixes#164069.
Original commit message from CVS:
* ext/ogg/gstoggmux.c:
eos/bos debugging
* gst/tcp/gstmultifdsink.c:
* gst/tcp/gstmultifdsink.h:
* gst/tcp/gsttcp.c:
* gst/tcp/gsttcp.h:
* gst/tcp/gsttcpclientsink.c:
* gst/tcp/gsttcpclientsrc.c:
* gst/tcp/gsttcpserversink.c:
* gst/tcp/gsttcpserversrc.c:
improve reusability of elements after state changes and errors
make multifdsink throw away streamheaders when receiving new ones
Original commit message from CVS:
* ext/vorbis/vorbisdec.c: (vorbis_dec_chain):
Debug.
* sys/v4l/v4lsrc_calls.c: (gst_v4lsrc_grab_frame):
If we got a state change in the _get handler, don't return success.
Original commit message from CVS:
* ext/theora/theoradec.c: (theora_dec_chain):
Fix broken code generation by gcc by swapping arguments.
* ext/vorbis/vorbisdec.c: (vorbis_dec_src_query):
Fix \n in debug.
Original commit message from CVS:
* TODO:
delete this file, it is by far outdated
* ext/alsa/gstalsa.1: remove
* ext/alsa/gstalsa.c: (add_rates), (add_channels), (gst_alsa_caps),
(gst_alsa_check_sample_rates), (gst_alsa_rates_probe),
(gst_alsa_get_caps):
Add HW probing for supported sample rates. Fixes#161704
Original commit message from CVS:
* ext/alsa/gstalsa.c: (gst_alsa_class_init), (gst_alsa_get_caps):
* ext/alsa/gstalsa.h:
Add HW probing for period_count/size and buffer_size MIX/MAX
Adjust default/user defined value if out of bounds
Should fix bug #162024
Original commit message from CVS:
* ext/alsa/gstalsa.c: (gst_alsa_change_state):
Reset variables on READY.
* gst/matroska/matroska-mux.c: (gst_matroska_mux_request_new_pad),
(gst_matroska_mux_loop):
Require data before writing header.
Original commit message from CVS:
* configure.ac:
Fix indentation, fix v4l2 plugin detection.
* ext/Makefile.am:
Fix libmms location (Maciej, use diff -u!).
* ext/alsa/gstalsa.c: (gst_alsa_init):
Initialize caps cache to NULL.
* gst/playback/gstplaybin.c: (gst_play_bin_change_state):
Only change state on audiosink if it exists.
Original commit message from CVS:
* ext/alsa/gstalsasink.c: (gst_alsa_sink_loop):
Fix for integer overflow. Makes #156001 not crash. Probably masks
the real bug.
Original commit message from CVS:
* configure.ac: add audioresample and cairo plugins. Remove
HAVE_MMX stuff, because it's not used.
* ext/Makefile.am: same
* ext/audioresample/Makefile.am: You are not ready for an
audio resampling element based on audioresample.
* ext/audioresample/gstaudioresample.c:
* ext/audioresample/gstaudioresample.h:
* ext/cairo/Makefile.am: You are not ready for overlay elements
based on cairo. Don't look too closely, these elements kinda
suck right now.
* ext/cairo/gstcairo.c: new
* ext/cairo/gsttextoverlay.c: new
* ext/cairo/gsttextoverlay.h: new
* ext/cairo/gsttimeoverlay.c: new
* ext/cairo/gsttimeoverlay.h: new
* gst-libs/gst/media-info/media-info-priv.h: fix compile
problem with compilers that don't support variadic macros.
Original commit message from CVS:
* ext/cdparanoia/gstcdparanoia.c: (cdparanoia_class_init),
(cdparanoia_set_property), (cdparanoia_get_property):
* ext/dvdnav/dvdnavsrc.c: (dvdnavsrc_class_init),
(dvdnavsrc_set_property), (dvdnavsrc_get_property):
* ext/dvdread/dvdreadsrc.c: (dvdreadsrc_class_init),
(dvdreadsrc_init), (dvdreadsrc_set_property),
(dvdreadsrc_get_property):
* sys/vcd/vcdsrc.c: (gst_vcdsrc_class_init),
(gst_vcdsrc_set_property), (gst_vcdsrc_get_property):
Synchronize property names where not yet the case. Devices are
now device=X, other versions are deprecated (but still exist).
Also use g_free() unconditionally.
* gst/playback/gstplaybasebin.c: (gst_play_base_bin_class_init),
(setup_source), (gst_play_base_bin_get_property):
Expose source.
Original commit message from CVS:
* ext/alsa/gstalsa.c: (gst_alsa_get_caps), (gst_alsa_close_audio):
* ext/alsa/gstalsa.h:
refactor big chunks of the core caps negotiation code to make it
a lot faster, because people claim it's really slow
(actually, just cache the getcaps when the device is opened)
Original commit message from CVS:
2004-11-28 Martin Soto <martinsoto@users.sourceforge.net>
* ext/alsa/gstalsasink.c (gst_alsa_sink_loop):
* ext/alsa/gstalsa.h:
* ext/alsa/gstalsa.c (gst_alsa_set_clock):
Make alsasink actually honor gst_element_set_clock and use that
clock instead of ist internal one.
Original commit message from CVS:
* ext/alsa/gstalsa.c: (gst_alsa_get_caps):
Don't omit the last (which incase of dmix is the only :) )
channel count. Don't set channels if <= 2.
Original commit message from CVS:
* ext/vorbis/oggvorbisenc.c
* ext/vorbis/vorbisenc.c :
change description fields of those plugins to differentiate them
(pitivi show Encoders by description, they had the same one)
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_demux_push):
Fix position for discont if we're close as well. Nitpicking, but
saves a few milliseconds of extra waiting or skipping.
Original commit message from CVS:
patch by: Ronald Bultje <rbultje@ronald.bitfreak.net>
* ext/ogg/gstoggdemux.c:
Fix sync on broken files. Fixes#158976
Original commit message from CVS:
* ext/alsa/gstalsa.c: (gst_alsa_pcm_wait):
add debugging
* ext/alsa/gstalsasink.c: (gst_alsa_sink_loop):
do a wait when we enter the loop func with no data available to
write instead of getting into an 100% CPU loop by just returning and
being called again by the scheduler
Original commit message from CVS:
* configure.ac:
* ext/libvisual/visual.c: (gst_visual_get_type),
(libvisual_log_handler), (gst_visual_getcaps),
(gst_visual_srclink), (gst_visual_change_state), (make_valid_name),
(plugin_init):
Update libvisual to 0.1.7. Link in the debug handling to gstreamer
* ext/smoothwave/Makefile.am:
* ext/smoothwave/demo-osssrc.c: (main):
* ext/smoothwave/gstsmoothwave.c: (gst_smoothwave_class_init),
(gst_smoothwave_init), (gst_smoothwave_dispose), (gst_sw_sinklink),
(gst_sw_srclink), (gst_smoothwave_chain), (gst_sw_change_state),
(plugin_init):
* ext/smoothwave/gstsmoothwave.h:
Make gstsmoothwave a working element in the 20th century.
* gst/chart/gstchart.c: (gst_chart_init), (gst_chart_srcconnect):
Fix incorrect link function
Original commit message from CVS:
* ext/alsa/gstalsasink.c: (gst_alsa_sink_loop):
Fix for negotiation order problem. This would show when the
ALSA loopfuction was called before any other function. ALSA
wouldn't do anything because we're not negotiated yet, leading
to an infinite loop. Showed in e.g. Rhythmbox. Fixes#158006.
Original commit message from CVS:
reviewed by: Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* ext/vorbis/vorbisdec.c: (vorbis_dec_src_query):
No warnings (#157986).
Original commit message from CVS:
* ext/alsa/gstalsa.c: (gst_alsa_change_state):
Only set hardware parameters *after* negotiation. Before
negotiation, it will set ANY and that seems to cause crashes
(see e.g. #151288, #153227).
Original commit message from CVS:
* ext/alsa/gstalsasink.c: (gst_alsa_sink_get_time):
This seems to be antique leftover. It needs to pass error
checking.
* ext/sdl/sdlvideosink.c: (gst_sdlvideosink_init),
(gst_sdlvideosink_deinitsdl), (gst_sdlvideosink_initsdl),
(gst_sdlvideosink_destroy), (gst_sdlvideosink_create),
(gst_sdlvideosink_sinkconnect), (gst_sdlvideosink_chain):
Fix GstXOverlay implementation (#151059).
Original commit message from CVS:
* ext/alsa/gstalsa.c: (gst_alsa_get_caps_internal):
buffer-frames property was missing
* ext/arts/gst_arts.c:
rate missing from sinkcaps
* ext/audiofile/gstafparse.c:
* ext/audiofile/gstafsink.c:
* ext/audiofile/gstafsrc.c:
* ext/swfdec/gstswfdec.c:
int audio doesn't know buffer-frames
* ext/cdparanoia/gstcdparanoia.c:
int audio doesn't know chunksize either
* ext/nas/nassink.c:
it's endianness, not endianess
* gst-libs/gst/audio/audio.h:
make float standard pad template caps really describe float
* gst/law/mulaw.c: (linear_factory):
signed only, please
* gst/mpegstream/gstdvddemux.c:
widths of 20 are not valid
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (get_relative), (gst_ogg_demux_src_query),
(gst_ogg_demux_push), (gst_ogg_pad_push):
Let's act as if we're synchronized now! :).
* ext/theora/theoradec.c: (theora_dec_chain):
Add some debug.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_pad_push):
Actually always send a discont (cornercase when resending the
same serial-tagged chain twice).
Original commit message from CVS:
reviewed by: Ronald S. Bultje <rbultje@ronald.bitfreak.net>
* ext/vorbis/vorbisenc.c: (raw_caps_factory):
Fix weird caps (#157548).
Original commit message from CVS:
2004-11-01 Christophe Fergeau <teuf@gnome.org>
* ext/ogg/gstoggdemux.c: (gst_ogg_demux_finalize): fix an "invalid
free" warning from libc.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_pad_push):
Hack to prevent crash when going to READY inside signal handler
while this function is active.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_demux_src_event),
(gst_ogg_demux_push):
Make seeking sort-of exact again (fixes#156387).
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_demux_src_event),
(gst_ogg_demux_handle_event), (_find_chain_get_unknown_part),
(_find_streams_check), (gst_ogg_demux_push):
Fix EOS again. Needs to be done in a better way. We should not
remove the pad if there is no new chained stream.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_pad_remove),
(gst_ogg_demux_push), (gst_ogg_chains_clear):
Make sure to remove the pad when a new chain is
encountered. Set some vars to NULL so we don't try
to reference freed memory.
Original commit message from CVS:
* ext/ogg/gstoggdemux.c: (gst_ogg_demux_src_query),
(gst_ogg_demux_src_event), (_find_chain_seek),
(gst_ogg_pad_push):
Check for pad availability before using it.
* ext/ogg/gstoggdemux.c: (_find_chain_process):
Fix parsing of chained ogg. Needs more work on the decoder side.
