xiangmingzhu authored 10 years ago and Jean-Marc Valin committed 10 years ago

1. Only for fixed point on x86 platform (32bit and 64bit, uses SIMD
   intrinsics up to SSE4.2)
2. Use "configure --enable-fixed-point --enable-intrinsics" to enable
   optimization, default is disabled.
3. Official test cases are verified and passed.

Signed-off-by: Timothy B. Terriberry <tterribe@xiph.org>

Mark Harris authored 11 years ago and Jean-Marc Valin committed 11 years ago

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

This was causing pseudostack builds to fail because opus_demo uses a 2-second
buffer.

We only keep when concealing less than 10ms with SILK.

Timothy B. Terriberry authored 11 years ago and Jean-Marc Valin committed 11 years ago

Optimizing celt_pitch_xcorr()/xcorr_kernel() which also speeds up
FIRs, IIRs and auto-correlations

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Because it's indirectly used in the encoder (through the repackerizer).

The library really depends on all the little fixed point math functions
 being inlined in order to get acceptable performance. It turns out that
 it's very easy for someone to compile with optimization disable when
 twiddling cflags or cooking up their own build system.

Newer versions of MSVC are unhappy with the strategy of the build
 environment redefining "inline" (even though they don't support the
 actual keyword). Instead we define OPUS_INLINE to the right thing
 in opus_defines.h.

This is the same approach we use for restrict.

This should fix decoding of padded multistream packets and (hopefully)
multistream fec.

Mark Harris authored 11 years ago and Jean-Marc Valin committed 11 years ago

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Mark Harris authored 11 years ago and Jean-Marc Valin committed 11 years ago

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Mark Harris authored 11 years ago and Jean-Marc Valin committed 11 years ago

Decoding failed with OPUS_BAD_ARG on a packet containing a 40ms or
60ms zero-length frame when it followed a hybrid or MDCT frame.
It now invokes the PLC for the duration of the packet as expected.

Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>

Prevents the decoder from being out-of-sync on an invalid packet. Also
returns OPUS_INVALID_PACKET on a corrupted FEC packet.

Also makes the CTL bad argument handling more consistent to avoid mistakes
 like that in the future.  Also updates the variable duration docs.

Aurélien Zanelli authored 11 years ago and Timothy B. Terriberry committed 11 years ago

Run-time CPU detection (RTCD) is enabled by default if target platform support
it.
It can be disable at compile time with --disable-rtcd option.

Add RTCD support for ARM architecture.

Thanks to Timothy B. Terriberry for help and code review

Signed-off-by: Timothy B. Terriberry <tterribe@xiph.org>

This left FEC disabled on the decoder side for all cases except concatenated
packets. Also fixes a FEC bug in opus_demo (wrong output buffer size
calculation).

opus_decode() and opus_multistream_decode() now apply soft clipping
before converting to 16-bit int. This should produce better a higher
quality result than hard clipping like we were doing before. The _float()
API isn't affected, but the clipping function is exported so users can
manually apply the soft clipping.

Calling PLC/FEC with a different size was not updating it

PLC and FEC now return exactly the number of samples specified for the
buffer rather than (usually) returning the size of the last packet.
Doc and tests are updated accordingly.

This was reported by Juri Aedla and is limited to reading memory up
to about 60 kB beyond the compressed buffer. This can only be triggered
by a compressed packet more than about 16 MB long, so it's not a problem
for RTP. In theory, it *could* crash an Ogg decoder if the memory just after
the incoming packet is out-of-range.

The README doesn't say anything about this particular define.
Refer people to config.h and the other build files for examples.

Delays stack allocations as much as possible, and makes some of these
allocations conditional.

Koen Vos authored 12 years ago and Jean-Marc Valin committed 12 years ago

Conflicts:

	src/opus_multistream.c
	src/opus_private.h

Timothy B. Terriberry authored 12 years ago and Jean-Marc Valin committed 12 years ago

This avoids allocating any buffers on the stack that depend on the
 total channel count.
Such buffers could easily exceed the size of the
 NONTHREADSAFE_PSEUDOSTACK.
It also checks the frame_size argument in both the encoder and
 decoder to avoid allocating large stack buffers for opus_encode()
 calls that would fail anyway or opus_decode() calls that would
 never use all that space anyway.