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Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Martin Storsjö <martin@martin.st>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Neon parts by Mans Rullgard <mans@mansr.com>.
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Signed-off-by: Diego Biurrun <diego@biurrun.de>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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On 32-bit ppc, the GOT pointer must be loaded manually.
This adds a "get_got" assembler macro to compute the
GOT address. The "movrel" macro is updated to take an
additional parameter containing the GOT address since
no register is reserved for this purpose on ppc32.
These changes have no effect on ppc64 builds.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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This is already set by dsputil_init_ppc() and is best done in only
one place.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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The Altivec IMDCT works with size 32 and higher only.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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Note: this is 4:4:4 from the 2007 spec revision, not the previous (now deprecated) 4:4:4 mode in H.264.
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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This separation allows these functions to be used in a cleaner
fashion from other codecs (e.g. qdm2) and simplifies creating
optimised versions of them.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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decoder.
This patch lets e.g. dsputil_init chose dsp functions with respect to
the bit depth to decode. The naming scheme of bit depth dependent
functions is <base name>_<bit depth>[_<prefix>] (i.e. the old
clear_blocks_c is now named clear_blocks_8_c).
Note: Some of the functions for high bit depth is not dependent on the
bit depth, but only on the pixel size. This leaves some room for
optimizing binary size.
Preparatory patch for high bit depth h264 decoding support.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
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This reverts commit f8bed30d8b176fa030f6737765338bb4a2bcabc9. The reason
for this is that the overlap filter, which runs after IDCT, should run
on unclamped values, and thus IDCT and put_pixels() cannot be merged if
we want to attempt to be bitexact.
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According to ISO 9899:1999 S 6.5.7/4:
The result of E1 << E2 is E1 left-shifted E2 bit positions; vacated bits
are filled with zeros. If E1 has an unsigned type, the value of the
result is E1× 2^E2, reduced modulo one more than the maximum value
representable in the result type. If E1 has a signed type and
nonnegative value, and E1× 2^E2 is representable in the result type, then
that is the resulting value; otherwise, the behavior is undefined.
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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It only has Altivec functions and is not compiled if Altivec is disabled.
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The 4-tap filters should only access one row/column before the
reference block.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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GCC 4.3 and later are more particular about signedness matching
in vector operations. The operations under if(rangered) were
missing assignments and thus had no effect.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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Merging these functions allows merging some loops, which makes the
results (particularly after SIMD optimizations) much faster.
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This will be beneficial for use with the audio conversion API without
requiring it to depend on all of dsputil.
Signed-off-by: Mans Rullgard <mans@mansr.com>
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DSPContext.vector_fmul_window()
DCADSPContext.lfe_fir()
SynthFilterContext.synth_filter_float()
Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Mans Rullgard <mans@mansr.com>
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Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
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Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
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function and rename it to av_get_cpu_flags().
Originally committed as revision 25076 to svn://svn.ffmpeg.org/ffmpeg/trunk
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mm_support() instead.
Reduce complexity and simplify pending move to libavutil.
Originally committed as revision 25074 to svn://svn.ffmpeg.org/ffmpeg/trunk
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symbols, and move them from libavcodec/avcodec.h to libavutil/cpu.h.
Originally committed as revision 25040 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 24909 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 24308 to svn://svn.ffmpeg.org/ffmpeg/trunk
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On PPC a leaf function has a 288-byte red zone below the stack pointer,
sparing these functions the chore of setting up a full stack frame.
When a function call is disguised within an inline asm block, the
compiler might not adjust the stack pointer as required before a
function call, resulting in the red zone being clobbered.
Moving the entire function to pure asm avoids this problem and also
results in somewhat better code.
Originally committed as revision 24044 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 24043 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 24042 to svn://svn.ffmpeg.org/ffmpeg/trunk
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This removes the need for a post-swizzle with the small FFTs.
Originally committed as revision 24025 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Originally committed as revision 23962 to svn://svn.ffmpeg.org/ffmpeg/trunk
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Patch by Loren Merritt
Originally committed as revision 23959 to svn://svn.ffmpeg.org/ffmpeg/trunk
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