lavf/file: file_check: Handle file URLs that start with "file:"

Handle the URL analog to file_open, it may contain a "file:"
prefix. Skip it. Make access checks to file URLs starting
with "file:" work.

Fix part of ticket #3249.

Signed-off-by: Alexander Strasser <eclipse7@gmx.net>
fate: Add a downsampled SBR testvector
aac: Fix TNS decoding for the 512 sample window family.
fate: Add a test vector for AAC ELD with TNS.
aac: Fix low delay windowing.

AAC LD uses a low overlap sine window instead of a KBD window.
fate: Update AAC ELD 5.1 ref for recent bugfixes.
sdp: Check that fmt->oformat is non-null before accessing it

This avoids crashes when avserver tries to create an SDP, since
d77f4af.

CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
doc/protocols/file: document general file protocol URL syntax

Also drop confusing ff* tools reference about exceptions to the
file:FILENAME syntax, which is not ff* tool specific.

With various edits by Alexander Strasser <eclipse7@gmx.net>.
doc/protocols/file: fix semantical reverse

Change "read" to "write" in introductory description.

Spotted-by: Alexander Strasser <eclipse7@gmx.net>
lavf/file: fix help message first character casing for trunc option
avformat/mp3dec: fix start time in light of initial skip samples

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'e2096e2eaa9e75663d6bf0c37d342752aa5a146d'

* commit 'e2096e2eaa9e75663d6bf0c37d342752aa5a146d':
  fate: Add a downsampled SBR testvector

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit 'b2212dec0f011893ec68eecaa990170fa24050d7'

* commit 'b2212dec0f011893ec68eecaa990170fa24050d7':
  aac: Fix TNS decoding for the 512 sample window family.

also temporarily disable fate-aac-er_ad6000np_44_ep0 as this commit
causes a mismatch with the reference pcm file
The test will be reenabled after all fixes and with a new pcm reference

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '42d1b41983971da63302ac3d12091cad1f3d6324'

* commit '42d1b41983971da63302ac3d12091cad1f3d6324':
  fate: Add a test vector for AAC ELD with TNS.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '7f29644108c5fbd80f160930b31b78b8704c1a49'

* commit '7f29644108c5fbd80f160930b31b78b8704c1a49':
  aac: Fix low delay windowing.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '9d18a7d3ec09d6d933d648570643fde924aa391a'

* commit '9d18a7d3ec09d6d933d648570643fde924aa391a':
  fate: Update AAC ELD 5.1 ref for recent bugfixes.

also reenable fate-aac-er_ad6000np_44_ep0, as this commit updates the pcm
reference, so that the test works again

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  sdp: Check that fmt->oformat is non-null before accessing it

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avformat/matroskaenc: warn when muxing video codec not supported by format

This occurs for video codecs that have codec_tag set, but are are not listed
in ff_codec_bmp_tags (e.g. AV_CODEC_ID_BINKAUDIO, AV_CODEC_ID_IFF_ILBM).

Fixes ticket #3269.

Signed-off-by: Peter Ross <pross@xvid.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
configure: Support preprocessor macros as header names

New versions of FreeType have moved the location of their API
header(s) and hide the location behind a macro.

Since the location changes between versions and no other way
to know the location exists, this workaround becomes necessary.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  configure: Support preprocessor macros as header names

Merged-by: Michael Niedermayer <michaelni@gmx.at>