Rewrite the audio encoders to use the right API functions of ffmpeg. Also get
rid of the handrolled cache and use adapter instead for formats that require
fixed frame_size as input.
We don't need to set a default frame_size, ffmpeg has set this value to 0 to
inform us that there is a fixed relation between the amount of input samples
and output samples. Now we only need to implement handling that fact.
ffmpeg only tells us on a per-decoded-buffer basis if the stream is
interlaced or not. When we see a change, we force negotiation.
We can't detect that in our get_buffer() (when doing downstream allocation),
because at that point the interlaced flags aren't set on the outgoing
buffer.
Add a new function new_aligned_buffer() which creates a GstBuffer of
the requested size/caps, with the memory being allocated/freed by ffmpeg's
av_malloc/av_free which guarantees properly aligned memory.
Added a can_allocate_aligned internal property which we use to figure out
whether downstream can provide us with 128bit aligned buffers.
Without a frame_size configured in the context, the ffmpeg encoders do nothing.
Since the G726 does not configure a size itself, we set ourselves a frame_size
that corresponds to 20ms of audio, which is a reasonable default.
We do this, because the demuxer is initialized in the loop function. If it's not
initialized yet, that means the loop hasn't been entered... and therefore the
PIPE GCond will never be signalled.
We simply allocate the memory using ffmpeg's av_malloc which provides us
with properly memalign'ed data.
This avoids write-outside-of-bounds when sse/altivec code is being used.
The internal resampling functions seem to require a slightly bigger buffer
for output than what we require. Therefore we give it an extra 64bytes (although
16 should have been enough).
We should post a STREAM DECODE error message on the bus when we return
GST_FLOW_ERROR, otherwise the user ends up seeing an ugly internal flow
error message, which isn't very nice.
The problem is that the ffmpeg aac decoder fails... but still accepts
the following buffers as if nothing happened. But because some things
were not properly set in the internal code, all hell breaks loose.
AVOutputFormat does *NOT* contain the full list of codecs a muxer can handle,
but does contain the recommended audio and video codecs. Therefore we use that
information to expose more muxers, until AVOutputFormat contains a list of
*ALL* compatible codecs.
For a given AVCodec, when the sample_fmts field is non-NULL, that means that
that codec can only handle a specific set of SampleFormat.
With this patch, we now look for its presence and create the proper pad template
caps.
Fixes#569441
Where no more data is available, av_read_frame just returns an error code
instead of making the difference between "I am not returning anything because
we finished reading" and "I am not returning anything because the underlying
read failed".
We differentiate between the two by looking at whether we outputted any
data previously or not.
Original commit message from CVS:
Patch by: Dejan Sakelšak <sakdean at gmail dot com>
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ff_aud_caps_new):
Narrow down the allowed channels and sample rates for AMR.
Fixes#566647.
Original commit message from CVS:
* ffmpegrev:
Updating ffmpeg SVN revision to r16304 and update to the corresponding
swscale snapshot.
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_caps_to_codecid):
Enable the Real Video 3.0 decoder.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ff_aud_caps_new),
(gst_ffmpeg_codecid_to_caps), (gst_ffmpeg_smpfmt_to_caps),
(gst_ffmpeg_codectype_to_caps), (gst_ffmpeg_caps_to_smpfmt),
(gst_ffmpeg_caps_to_codecid), (av_smp_format_depth):
* ext/ffmpeg/gstffmpegcodecmap.h:
Add mapping for EAC3 and QCELP audio codecs.
Add conversion functions for all available audo SampleFormat.
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_open),
(gst_ffmpegdec_setcaps), (gst_ffmpegdec_negotiate),
(clip_audio_buffer), (gst_ffmpegdec_audio_frame):
Remove assumptions that we can only handle stereo 16bit signed integer
audio, and store the depth locally.
Original commit message from CVS:
* configure.ac:
* ext/ffmpeg/gstffmpegmux.c:
Fix tag merging. Use tagsetter and not internal copies. Depend on
CVS core and use new API to flush.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ff_channel_layout_to_gst):
If no channel layout is provided don't set a NONE layout in the
case of >2 channels but instead let audioconvert add some default
layout.
Original commit message from CVS:
* ext/ffmpeg/Makefile.am:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ff_channel_layout_to_gst),
(gst_ff_aud_caps_new):
* ext/ffmpeg/gstffmpegcodecmap.h:
Set the channel layout if it's exposed by the decoder.
Fixes bug #548002.
Original commit message from CVS:
reviewed by: Edward Hervey <edward.hervey@collabora.co.uk>
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_finalize):
Fix check for memory to free.
Fixes#560644
Original commit message from CVS:
* ext/ffmpeg/gstffmpegmux.c: (gst_ffmpegmux_setcaps):
Copy the codec aspect ratio to the stream, ffmpeg expects them to be the
same. Fixes#560305.
Original commit message from CVS:
* configure.ac:
Fix typo: libswcale -> libswscale for the pkg-config check.
* ext/libswscale/gstffmpegscale.c:
Fix include path, newer ffmpeg installs the headers for all
libraries into separate directories. Fixes bug #560137.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_avpicture_fill):
Initialize some more variables.
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_setcaps),
(alloc_output_buffer):
Disable direct rendering for h264, some functions just seem to read from
invalid memory.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_setcaps),
(gst_ffmpegdec_get_buffer), (get_output_buffer):
Enable direct rendering.
Add some more debug info about image strides.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_pixfmt_to_caps),
(gst_ffmpeg_smpfmt_to_caps), (gst_ffmpeg_caps_to_codecid),
(gst_ffmpeg_avpicture_fill):
Don't convert caps to strings when we don't have debugging enabled.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ff_aud_caps_new):
Fix regression in template caps limitations;
expose more than 2 channels in both src and sink template
if so supported.
Original commit message from CVS:
* ext/ffmpeg/Makefile.am:
* ext/libpostproc/Makefile.am:
* ext/libswscale/Makefile.am:
Don't install static libs for plugins. Fixes#550851 for -ffmpeg.
Original commit message from CVS:
Based on a patch by: Alexis Ballier <aballier at gentoo dot org>
* configure.ac:
* ext/ffmpeg/gstffmpeg.c:
* ext/ffmpeg/gstffmpeg.h:
* ext/ffmpeg/gstffmpegaudioresample.c:
* ext/ffmpeg/gstffmpegcfg.c: (gst_ffmpeg_flags_get_type),
(gst_ffmpeg_cfg_init):
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_codecid_to_caps),
(gst_ffmpeg_caps_to_pixfmt), (gst_ffmpeg_caps_with_codecid):
* ext/ffmpeg/gstffmpegcodecmap.h:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_setcaps),
(gst_ffmpegdec_register):
* ext/ffmpeg/gstffmpegdeinterlace.c:
* ext/ffmpeg/gstffmpegdemux.c:
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_getcaps),
(gst_ffmpegenc_setcaps), (gst_ffmpegenc_register):
* ext/ffmpeg/gstffmpegmux.c:
* ext/ffmpeg/gstffmpegprotocol.c: (gst_ffmpegdata_seek):
* ext/libpostproc/gstpostproc.c:
* ffmpegrev:
Update ffmpeg/swscale snapshot to the latest revision and adjust
to API changes. Fixes bug #556405.
Require libavutil for swscale too when building with an external
ffmpeg and fix includes for external ffmpeg.
Original commit message from CVS:
Patch by: Robin Stocker <robin at nibor dot org>
* ext/ffmpeg/gstffmpegdec.c:
(gst_ffmpegdec_add_pixel_aspect_ratio):
If both, the decoder and the demuxer, provide a non-1:1 PAR
prefer the one of the demuxer instead of the one of the decoder.
Fixes bug #556336.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ff_vid_caps_new),
(gst_ff_aud_caps_new), (gst_ffmpeg_codecid_to_caps),
(gst_ffmpeg_codectype_to_caps):
* ext/ffmpeg/gstffmpegcodecmap.h:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_negotiate),
(gst_ffmpegdec_register):
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_getcaps),
(gst_ffmpegenc_register):
Add some more width/height/channels/rate limitations to caps
to cater for more automagic negotiation. Addresses #532422.
Original commit message from CVS:
Patch by: Damien Lespiau <damien dot lespiau at gmail dot com>
* configure.ac:
* ext/ffmpeg/Makefile.am:
Fix cross compilation and add support for compilation with mingw32.
Fixes bug #542216.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (nal_escape), (copy_config),
(gst_ffmpeg_caps_with_codecid):
Add some debug that revealed that the escape code was disabled...
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_frame),
(gst_ffmpegdec_chain):
If we have a parser and we did not consume any of the bytes of a new
buffer, make sure we submit the buffer again with its original timestamp
instead of a -1 timestamp. Fixes various h264 cases with reordered
frames.
If we have a discont and a timestamp but the first buffer after the
discont did not produce any data, make sure we set the timestamp on the
next buffer instead. Fixes initial timestamp on realaudio in many cases.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (nal_escape), (copy_config),
(gst_ffmpeg_caps_with_codecid):
Escape the codec_data for h264 before we put it in the extra_data
because ffmpeg expects it escaped.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_codecid_to_caps):
Give the TrueSpeech audio codec a proper caps. This is now synchronized
with libriff in -base cvs.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_finalize),
(gst_ffmpegdec_get_buffer), (gst_ffmpegdec_frame):
Finalizing a decoder that was never used shouldn't trigger an assertion.
Add debug messages for the two other g_assert_if_reached().
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ff_aud_caps_new):
Instead of marking all audio decoders/encoders as accepting up to 6
channels, we white-list those for which we are sure they can handle
those 6 channels.
Fixes#549799
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdemux.c:
gst_pad_template_new() takes ownership of caps; ref them beforehand
since we want to keep using them afterwards.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ff_aud_caps_new):
ffmpeg audio decoders can now do up to 6 channels... and actually
expose it properly. Don't expect any channel mapping though.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcfg.c: (gst_ffmpeg_cfg_fill_context):
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_getcaps):
Latest ffmpeg revision's avcodec_close frees more; use safer coding to
prevent double free and other related segfaults.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_caps_to_pixfmt):
Recognize video/x-raw-gray and map to proper pixfmt.
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_setcaps),
(gst_ffmpegenc_chain_video):
Fail negotiation if pixfmt cannot be determined from input caps.
Prevent segfault accessing non-existant coded_frame, provide some
warning debug output instead.
Original commit message from CVS:
Based on a patch by: Aurelien Grimaud <gstelzz at yahoo dot fr>
* ext/ffmpeg/gstffmpegmux.c: (gst_ffmpegmux_collected):
Properly convert buffer duration to an ffmpeg packet duration.
Fixes#371939.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c:
If ffmpeg reports 0 bytes of input data consumed, don't break out
unless it also didn't produce any output. Fixes the audio in #377400
and doesn't break anything else I've tested.
Enable the mp3 parser, and set mp3 and mpeg2-video decoding autoplug
at marginal level, as they seem to both work fine now.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_register):
Set flv demuxer to rank NONE, we have a better, working demuxer in -bad
and we don't want any bug reports about this one. Fixes#534783.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ff_vid_caps_new),
(gst_ffmpeg_pixfmt_to_caps), (gst_ffmpeg_caps_with_codecid):
Add more specific width/height for DV video so that it negotiates more
automatically.
Try to avoid accessing NULL caps.
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_getcaps):
Add some more debuggin to the caps generation.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_register):
Explicitely disable the AAC decoders as they don't work very well
and we have better alternatives. Fixes bug #534392.
Original commit message from CVS:
Patch by:
Hans de Goede <j dot w dot r degoede at hhs dot nl>
* configure.ac:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_avpicture_fill):
* ext/ffmpeg/gstffmpegcodecmap.h:
* ext/ffmpeg/gstffmpegdec.c: (get_output_buffer):
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_loop):
* ext/ffmpeg/gstffmpegmux.c: (gst_ffmpegmux_collected):
Use av_picture_copy() instead of libswscale to copy pictures. This
removes the swscale dependency and is faster. Fixes bug #534390.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_type_find),
(gst_ffmpegdemux_register):
Explicitly disable 'raw' mpeg-ts typefinder as well; better debug logging
for the gst-ffmpeg typefinders. (#533708).
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_src_query_list),
(gst_ffmpegdemux_src_query), (gst_ffmpegdemux_get_stream),
(gst_ffmpegdemux_open):
Implement SEEKING query, so players such as totem can query
seekability. Fix a comment typo or two.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_img_convert):
Replace usage of img_convert (deprecated) by sws_scale.
Fixes#529015
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_setcaps),
(gst_ffmpegdec_register):
Previous commit in fact broke playback for standard wmv3.
Instead make both ffdec_vc1 and ffdec_wmv3 accept any wmv3 variant and
figure out the proper codecid when opening the ffmpeg decoder.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_setcaps),
(gst_ffmpegdec_video_frame), (gst_ffmpegdec_register):
Bump the priority of VC1 decoder so that it goes before the WMV3
decoder. This allows proper auto-pluggin with decodebin/playbin.
Fixes#531857
Original commit message from CVS:
Patch by: Gabriel Bouvigne <bouvigne at mp3-tech dot org>
* ext/libpostproc/gstpostproc.c:
Support for non-I420 colorspaces in postproc
Fixes#496127
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_codecid_to_caps),
(gst_ffmpeg_formatid_to_caps), (gst_ffmpeg_caps_to_codecid),
(gst_ffmpeg_get_codecid_longname):
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_register):
Add support for MusePack StreamVersion 7 and disable the StreamVersion
8 typefinder. Fixes bug #510745.
Original commit message from CVS:
2008-04-15 Andy Wingo <wingo@pobox.com>
* ext/libpostproc/gstpostproc.c (gst_post_proc_transform_ip): Fix
some mistyping when calling pp_postprocess.
Original commit message from CVS:
* ffmpegrev: Bump upstream ffmpeg revision to todays
* configure.ac: Fix configure for build modification in upstream
* ext/libpostproc/gstpostproc.c: (gst_post_proc_transform_ip):
Fix build for modifications in upstream
Original commit message from CVS:
2008-03-18 Andy Wingo <wingo@pobox.com>
* ext/ffmpeg/gstffmpegdec.c (gst_ffmpegdec_sink_event): Only drain
if we've already set up a codec.
Original commit message from CVS:
2008-03-17 Andy Wingo <wingo@pobox.com>
* ext/ffmpeg/Makefile.am (libgstffmpeg_la_LIBADD): Re-add -lz
explicitly here.
* configure.ac: Remove -lz from FFMPEG_LIBS, because FFMPEG_LIBS
are used in the Makefile.am as a DEPENDENCIES target, and -lz is
not a target. Also in a blahriffic turn of events, MMX and Altivec
code on MacOS 10.5 produces non-PIC code. Turn them off on macos.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_sink_event):
When we receive a newsegment event, we must drain any pending frames
because they belong to the previous segment. This fixes some cases of
very large timestamps when doing segment seeks.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_open),
(get_output_buffer), (gst_ffmpegdec_video_frame),
(gst_ffmpegdec_chain):
Work around an ffmpeg bug where it always returns 0 timestamps.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcodecmap.c: (gst_ffmpeg_pixfmt_to_caps):
Fix masks for RGBA32 caps. Fixes colours when decoding using
ffdec_qtrle. Follows an identical fix in the ffmpegcolorspace copy of
this code (revision 1.29).
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_class_init),
(gst_ffmpegdec_setcaps), (check_keyframe),
(gst_ffmpegdec_video_frame), (gst_ffmpegdec_sink_event),
(gst_ffmpegdec_set_property):
Detect DTS or PTS as timestamps. This is done by tracking frame
reordering on the output and making sure that timestamps don't go
backwards. Fixes#482660.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_loop):
Don't try handling a buffer if downstream allocation failed.
Avoids crashes and Fixes#515205
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_video_frame):
Don't blindly copy input timestamp to output timestamp but prefer the
one attached to the picture when we can.
Add new variables for the output timestamp and duration to make the code
a little more clear.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_video_frame):
Initialize hurry_up to 0 to fix "might be used uninitialized"
compiler warning.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_base_init),
(gst_ffmpegdec_setcaps), (gst_ffmpegdec_video_frame):
* ext/ffmpeg/gstffmpegenc.c: (gst_ffmpegenc_base_init):
When doing QoS, don't drop the frame before decoding because we might
drop an important reference frame, just make the decoder hurry_up on
this frame.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_class_init),
(gst_ffmpegdec_init), (get_output_buffer), (gst_ffmpegdec_chain),
(gst_ffmpegdec_change_state), (gst_ffmpegdec_set_property),
(gst_ffmpegdec_get_property):
Add padding to input data before feeding it to ffmpeg. Also add option
to disable this (although it does not seem to cause slowdown).
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_setcaps),
(alloc_output_buffer), (gst_ffmpegdec_get_buffer),
(gst_ffmpegdec_release_buffer), (gst_ffmpegdec_negotiate),
(get_output_buffer):
Change the pad_alloc calculations for weird clipped sizes, refactor the
code a bit.
Add support for some different refcounting algorithm.
Direct rendering still disabled by default.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_class_init):
Disable direct-rendering by default until buffer allocation works
correctly.
Rename the alias of the direct rendering property from 'direct' to
'direct-rendering'.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_setcaps),
(gst_ffmpegdec_get_buffer):
Disable direct rendering for h264 since it does not always work.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_set_property),
(gst_ffmpegdec_get_property):
Implement get/set for the new property too.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_class_init),
(gst_ffmpegdec_init), (gst_ffmpegdec_close), (gst_ffmpegdec_open),
(gst_ffmpegdec_setcaps), (gst_ffmpegdec_get_buffer),
(gst_ffmpegdec_release_buffer), (get_output_buffer),
(gst_ffmpegdec_video_frame), (gst_ffmpegdec_audio_frame),
(gst_ffmpegdec_frame), (gst_ffmpegdec_change_state),
(gst_ffmpegdec_set_property), (gst_ffmpegdec_get_property):
Reenable pad_alloc, seem to work now.
Added property to easily disable it later on.
Remove some old code that tried hard to break the get_buffer
functions. Fixes#321662.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegcfg.c: (gst_ffmpeg_flags_get_type):
Add h263 to the list of codecs using the mpeg flags and options.
Add some more H263 specific flags. Fixes#421068.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_register):
Don't register typefinders for which we have better replacements
in base. Fixes bug #510985.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_video_frame),
(gst_ffmpegdec_chain):
Remove some more overly clever code that does nothing but mess up
timestamps.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_drain),
(gst_ffmpegdec_sink_event), (gst_ffmpegdec_chain):
Flush delayed frames on DISCONT if we have them.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_video_frame),
(gst_ffmpegdec_chain):
Flush on DISCONT because ffmpeg does not reliably tell us about
keyframes.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdec.c: (gst_ffmpegdec_register):
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_register):
Don't register the WavPack demuxer and decoder. They don't work,
we have better ones and the output of the demuxer/input of the
decoder is in a different format than what audio/x-wavpack of the
wavpack plugin is (it seems that the demuxer strips of the wavpack
headers from every frame).
This fixes typefinding of Wavpack files again, as the ffmpeg
typefinder was preffered for some reason and gave
application/x-gst_ff-wv instead of audio/x-wavpack.
Original commit message from CVS:
* ext/ffmpeg/gstffmpegdemux.c: (gst_ffmpegdemux_loop):
Fix demuxer to stop properly (emit an error message on the bus) if no
pads are linked. Use aggregated flow return values a bit more.
