lavu: Remove bit packing from AVComponentDescriptor
There is no practical benefit in having this structure elements
bit packed given the size of the structure and its usage.
Change types from uint16_t (packed) to plain int in order to simplify
modifying the structure and accessing its fields.
Martin Storsjö [Wed, 2 Sep 2015 10:05:45 +0000 (13:05 +0300)]
mov: Allow more than one keyframe per trun
The previous restriction was partially designed to fix certain
(broken) samples from bug 215. There should be no restriction on the
number of keyframes per fragment or trun.
The spec suggests that all frames lacking MOV_FRAG_SAMPLE_FLAG_IS_NON_SYNC
are key frames, but we require the flag MOV_FRAG_SAMPLE_FLAG_DEPENDS_YES
to be unset as well. This works for (possibly broken) media that never
sets the NON_SYNC flag and should also be correct for any spec-compliant
file.
For files that never set either of the flags, all samples are marked
as keyframes.
Despite '417792' being reported in the binary decoder, the buffer at
encoding time needs to be bigger to avoid running out of space due to
interlace handling.
Use a comment to list the reused tables, since it's more flexible than a
table name to keep information like this. The list will expand in later
commits.
Henrik Gramner [Thu, 20 Aug 2015 15:06:21 +0000 (17:06 +0200)]
checkasm: Explicitly declare function prototypes
Now we no longer have to rely on function pointers intentionally
declared without specified argument types.
This makes it easier to support functions with floating point parameters
or return values as well as functions returning 64-bit values on 32-bit
architectures. It also avoids having to explicitly cast strides to
ptrdiff_t for example.
Martin Storsjö [Fri, 14 Aug 2015 08:05:30 +0000 (11:05 +0300)]
libfdk-aacdec: Always decode into an intermediate buffer
For ADTS streams, the output format (number of channels, frame size)
can change at any point (with the latest version of fdk-aac, the decoder
seems to change format after a handful of frames, not outputting the
right format immediately, for cases that worked fine with the earlier
version of the lib).
Previously, the decoder decoded straight into the output frame once the
number of channels and frame size was known. This obviously does not
work if the number of channels or frame size changes.
The alternative would be to allocate the AVFrame with the maximum number
of channels and frame size, and change them afterward decoding into it,
but that may cause confusion to users e.g. of the get_buffer callback.
This solution should be more robust.
CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>
Martin Storsjö [Fri, 14 Aug 2015 07:55:54 +0000 (10:55 +0300)]
libfdk-aacdec: Bump the max number of channels to 8
In the latest version of fdk-aac, the decoder can output up to 8
channels; take this into account when preallocating buffers that
need to fit the output from any packet.
CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>
Martin Storsjö [Sun, 9 Aug 2015 20:11:55 +0000 (23:11 +0300)]
movenc: Add a new flag for writing global sidx indexes for dash
The double meaning of the faststart flag (moving a moov atom
to the start of files, making them streamable, for non-fragmented
files, vs inserting a global sidx index at the start of files
for fragmented files) is confusing - see 40ed1cbf1 for
explanation of its origins.
Since the second meaning of the flag hasn't been part of any
libav release yet, just rename it to get rid of the confusion
without any extra deprecation (which wouldn't get rid of the
potential confusion, of users adding -movflags faststart
even for fragmented files, where it isn't needed for making
them "streamable").
This gets back the old behaviour, where -movflags faststart
doesn't have any effect for fragmented files.
Henrik Gramner [Sat, 1 Aug 2015 15:27:32 +0000 (17:27 +0200)]
x86inc: Support arbitrary stack alignments
Change ALLOC_STACK to always align the stack before allocating stack space for
consistency. Previously alignment would occur either before or after allocating
stack space depending on whether manual alignment was required or not.
x86inc: warn if XOP integer FMA instruction emulation is impossible
Emulation requires a temporary register if arguments 1 and 4 are the same; this
doesn't obey the semantics of the original instruction, so we can't emulate
that in x86inc.
Also add pmacsdql emulation.
Signed-off-by: Henrik Gramner <henrik@gramner.com> Signed-off-by: Anton Khirnov <anton@khirnov.net>
Martin Storsjö [Sun, 9 Aug 2015 19:36:25 +0000 (22:36 +0300)]
movenc: Check that frag_info entries exist in mov_write_sidx_tag
This fixes crashes with pathological cases when trying to write
a sidx index (via the -movflags faststart option, in combination
with fragmenting options), when no fragments actually have been
written. (This is possible if the empty_moov flag isn't used,
so that all actual packet data is written in the moov/mdat pair,
and no moof/mdat pairs have been written.)
In these pathological cases, no sidx should be written at all.
Shiz [Mon, 3 Aug 2015 10:44:44 +0000 (12:44 +0200)]
configure: Silence error messages when probing compiler
On Xcode's clang on OS X, $cc --version will output a 'Configured with:'
line to stderr, which clobbers the configure script output. As this line
serves no further purpose, it should be silenced.
The same applies to apple-gcc 4.2.1, which complains that it can not
understand the kernel version it is running on.
projects / ffmpeg / log