Mans Rullgard [Fri, 27 Apr 2012 01:46:14 +0000 (02:46 +0100)]
ppc: dsputil: do unaligned block accesses correctly
To load unaligned vector data in the usual way, explicit vec_ld()
should be used rather than dereferencing a pointer to a vector type.
When the VSX extension is enabled, gcc may compile vector pointer
dereferences using the VSX lxvw4x instruction instead of the lvx
instruction typically used with Altivec/VMX. As the behaviour of
these instructions with unaligned addresses differs, it is important
that only lvx is used here.
Mans Rullgard [Fri, 27 Apr 2012 01:25:42 +0000 (02:25 +0100)]
dvenc: do not call dsputil functions with stride not a multiple of 16
Allowing dsputil functions to assume the stride is a multiple of 16
even for smaller block sizes can simplify their implementation.
This appears to be the only place this guarantee is not met.
Hendrik Leppkes [Sun, 29 Apr 2012 20:35:51 +0000 (13:35 -0700)]
avcodec: introduce YCoCg colorspace
Non perceptual color model that aims to have an increase effectiveness
in compression like the normal YCbCr while having near-lossless/lossless
mapping to RGB.
h264: new assembly version of get_cabac for x86_64 with PIC
This adds a hand-optimized assembly version for get_cabac much like the
existing one, but it works if the table offsets are RIP-relative.
Compared to the non-RIP-relative version this adds 2 lea instructions
and it needs one extra register. get_cabac() gets about 40% faster, for
an overall speedup of about 5%.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
h264: use one table instead of several for cabac functions
The reason is this is easier for PIC code (in particular on darwin...).
Keep the old names as pointers (static in cabac_functions.h so gcc
knows these are just immediate offsets) so the c code can nicely stay the same
(alternatively could use offsets directly in the functions needing the
tables). This should produce the same code as before with non-pic and better
code (confirmed) with pic.
The assembly uses the new table but still won't work for PIC case.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
Yusuke Nakamura [Mon, 30 May 2011 23:17:13 +0000 (08:17 +0900)]
mov: Parse EC3SpecificBox (dec3 atom).
Skip to parse fields for additional independent substreams and its
associated dependent substreams since libavcodec's E-AC-3 decoder does not
support them yet.
Martin Storsjö [Sat, 21 Apr 2012 17:44:24 +0000 (20:44 +0300)]
mpegts: Make sure we don't return uninitialized packets
This fixes crashes, where the demuxer could return 0 even
if the returned AVPacket isn't initialized at all. This
could happen if running into EOF or running out of probesize
with non-seekable sources.
Diego Biurrun [Thu, 26 Apr 2012 12:54:39 +0000 (14:54 +0200)]
gitignore: replace library catch-all pattern by more specific patterns
Ignoring all files that start with the name of a library matches some
files that are not generated. So replace libfoo/libfoo* with patterns
for static and shared libraries, pkg-config and version files.
Mans Rullgard [Wed, 25 Apr 2012 20:15:39 +0000 (21:15 +0100)]
build: icc: silence some warnings
This disables the warning "external declaration in primary source file"
which is issued when a prototype for an extern function is found in a
.c file rather than a header file. We have such prototypes for asm
functions where a separate header file would be pointless.
This partially reverts acb1730218f1c614dc8ca3ba45d9de1e05059515
which would only have needed to change the checksums if channel mixing had
been properly avoided. This changes the output file size reference and the
seek test reference back to the previous values.
Reduces the amount of upfront data required for cluster parsing
thus decreasing latency on seek and startup.
The change in the seek-lavf_mkv FATE test is due to incremental
parsing no longer reading as much data as the old parser and
thus not having that additional data to generate index entries
based on keyframes. Index entries are added correctly as the
file is parsed.
All FATE tests pass and Chrome has been using this patch for ~6
months without issue.
Currently incremental parsing is not supported for files with
SSA tracks since they require merging packets between clusters.
In this case the code falls back to non-incremental parsing.
Martin Storsjö [Sat, 21 Apr 2012 19:48:34 +0000 (22:48 +0300)]
mpegts: Try seeking back even for nonseekable protocols
The mpegts demuxer reads 5 KB at startup just for discovering
the packet size. Since the default avio buffer size is 32 KB,
the seek back to the start will in most cases be within the
avio buffer, and will in most cases succeed even if the actual
protocol isn't seekable.
This makes the demuxer startup faster/with less data when
reading data from a non-seekable input, by not skipping
the first few KB.
If it fails, don't warn if the protocol isn't seekable, making
it behave as before in the failure case.
Mans Rullgard [Fri, 20 Apr 2012 13:31:08 +0000 (14:31 +0100)]
avcodec: remove AVCodecContext.dsp_mask
This removes all references to AVCodecContext.dsp_mask and marks
it for eviction at the next version bump. It has been superseded
by av_set_cpu_flag_mask() which, unlike this field, works everywhere.
Jan Ekström [Fri, 20 Apr 2012 13:31:26 +0000 (13:31 +0000)]
utvideo: general cosmetics
General cosmetics, such as keeping lines under 80 characters,
fixing a couple of typos (predition -> prediction) and a
general style fix that was pointed out by Derek when I was having
my sliced multithreading patch in review by him.
FATE: replace the acodec-g726 test with 4 new encode/decode tests
Avoids resampling and channel mixing. This only tests the behavior
with respect to input and output audio rather than also testing changes
to the encoder or muxer that do not affect the resulting decoded output.
FATE: replace current g722 encoding tests with an encode/decode test
Avoids resampling and channel mixing. This only tests the behavior
with respect to input and output audio rather than also testing changes
to the encoder or muxer that do not affect the resulting decoded output.
FATE: specify the input format when decoding in enc_dec_pcm()
The output format is not always the same as the file extension,
which is sometimes required for correct probing. We can avoid
probing by specifying the format since it is already known.
avconv: check for an incompatible changing channel layout
The decoder can change the layout and channel count during decoding,
but currently we only validate that the two are compatible when opening
the codec. This checks for incompatibilities after each decoded frame.
Mans Rullgard [Wed, 18 Apr 2012 12:48:20 +0000 (13:48 +0100)]
matroska: do not set invalid default duration if frame rate is zero
If a video track specifies a zero frame rate (invalid but occurs),
this results in a division by zero and subsequent undefined conversion
to integer. Setting the default duration from the frame rate only
if the latter is greater than zero avoids such problems.
Do not pointlessly call ff_alloc_packet multiple times,
and fix an infinite loop by clamping the maximum
number of bits to target in the algorithm that does
not use lambda.
Alex Converse [Tue, 10 Apr 2012 23:27:28 +0000 (16:27 -0700)]
aacdec: More robust output configuration.
Save the old output configuration (if it has been used
successfully) when trying a new configuration. If the new configuration
fails to decode, restore the last successful configuration.
Samuel Pitoiset [Sun, 15 Apr 2012 19:50:50 +0000 (21:50 +0200)]
rtmp: Support 'rtmp_playpath', an option which overrides the stream identifier
This option is the stream identifier to play or to publish.
Sometimes the URL parser cannot determine the correct
playpath automatically, so it must be given explicitly
using this option (ie. -rtmp_playpath).
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