This function/macro returns the high half of the unsigned 64-bit
product of two unsigned 32-bit operands.
Originally committed as revision 21463 to svn://svn.ffmpeg.org/ffmpeg/trunk
Use x86_64_suggest instead of _select as otherwise fast_cmov being
disabled (as it should be for nocona) also disables x86_64 breaking
the build.
Originally committed as revision 21446 to svn://svn.ffmpeg.org/ffmpeg/trunk
This compiler supports gcc-style alignment attributes for struct,
but not for global variables. For the latter, alignment can be
specified with a pragma, which does not work for struct members or
local variables. By using both pragma and attribute, one or the
other will always take effect.
Unfortunately, no means exists for aligning stack variables.
Originally committed as revision 21379 to svn://svn.ffmpeg.org/ffmpeg/trunk
The seemingly equivalent _Pragma(AV_STRINGIFY(x)) is not accepted
by some compilers.
Originally committed as revision 21378 to svn://svn.ffmpeg.org/ffmpeg/trunk
The macro implementation might need the name of the variable being
declared for compiler-specific syntax. Moving array specifiers outside
the macro invocation allows this to work.
Originally committed as revision 21363 to svn://svn.ffmpeg.org/ffmpeg/trunk
This makes ffmpeg stop printing millions of
Multiple frames in a packet from stream 0
when decoding adpcm.
Originally committed as revision 21362 to svn://svn.ffmpeg.org/ffmpeg/trunk
The various avcodec_thread_init() functions are updated to return
immediately after setting avctx->thread_count. This allows -threads 0
to pass through to codecs. It also simplifies the usage for apps
using libavcodec.
Originally committed as revision 21358 to svn://svn.ffmpeg.org/ffmpeg/trunk
This option limits the CPU time used by ffmpeg to the number of seconds
specified. After this time, the OS sends a SIGXCPU signal, which we
handle and attempt to exit cleanly. If the process is stuck, the OS
will deliver a SIGKILL one second later, forcibly terminating the
process.
This functionality is useful in automated setups where a runaway ffmpeg
process would otherwise go undetected.
Originally committed as revision 21347 to svn://svn.ffmpeg.org/ffmpeg/trunk
Some broken versions of awk (mawk, apparently used in debian)
do not handle character classes in regular expressions.
Originally committed as revision 21334 to svn://svn.ffmpeg.org/ffmpeg/trunk
Silly BSD systems need this despite POSIX requiring nothing of the
kind. Any system with sys/socket.h should also have sys/types.h,
so this is unlikely to break anything, and we already do this in
another place.
Originally committed as revision 21326 to svn://svn.ffmpeg.org/ffmpeg/trunk
This file contains a safe subset of the config.h settings.
Only bigendian is included for now, more can be added as
need arises.
Originally committed as revision 21321 to svn://svn.ffmpeg.org/ffmpeg/trunk
Image buffers require 16-byte alignment, so av_malloc() should be used.
Fixes crash on PPC.
Originally committed as revision 30369 to svn://svn.mplayerhq.hu/mplayer/trunk/libswscale
This adds a check_struct function to test for availability of a
member within a struct.
Originally committed as revision 21267 to svn://svn.ffmpeg.org/ffmpeg/trunk
With this change, the output is checked immediately after each test
has run. This means commands like "make regtest-mpeg2" can now be
used to run a single test and get meaningful results.
By default, make will abort if any test fails. To run all tests
regardless, use make -k.
Originally committed as revision 21254 to svn://svn.ffmpeg.org/ffmpeg/trunk
This disables all console output from the *-regression.sh scripts by
default. If the V environment variable is set to 1, ffmpeg commands
are printed before being run. If V is greater than 1, ffmpeg output
goes to the console, otherwise stderr is redirected to a file.
Originally committed as revision 21253 to svn://svn.ffmpeg.org/ffmpeg/trunk
This adds a test_ldflags function for testing linker flags without
adding them to LDFLAGS like check_ldflags does.
Originally committed as revision 21235 to svn://svn.ffmpeg.org/ffmpeg/trunk
Using the low-level macros directly avoids redundant open/update/close
cycles.
2-3% faster on ARM, PPC, and Core i7.
Originally committed as revision 21224 to svn://svn.ffmpeg.org/ffmpeg/trunk
This adds the possibility to set foo_if and foo_if_any variables,
causing foo to be enabled if all/any of the listed options are
enabled.
Originally committed as revision 21215 to svn://svn.ffmpeg.org/ffmpeg/trunk
Simplify cur_band_type, group_len, and coef/offset calculations. This
makes the code easier to read and slightly faster.
Originally committed as revision 21189 to svn://svn.ffmpeg.org/ffmpeg/trunk
The codebooks each consist of small number of values repeated in
groups of 2 or 4. Storing the codebooks as a packed list of 2- or
4-bit indexes into a table reduces their size substantially (from 7.5k
to 1.5k), resulting in less cache pressure.
For the band types with sign bits in the bitstream, storing the number
and position of non-zero codebook values using a few bits avoids
multiple get_bits() calls and floating-point comparisons which gcc
handles miserably.
Some float/int type punning also avoids gcc brain damage.
Overall speedup 20-35% on Cortex-A8, 20% on Core i7.
Originally committed as revision 21188 to svn://svn.ffmpeg.org/ffmpeg/trunk
Two of these are in fact constant size, so use the constant instead of
a variable in the declarations. The remaining one is small enough
that always using the maximum size is acceptable.
Originally committed as revision 21183 to svn://svn.ffmpeg.org/ffmpeg/trunk
The maximum length of escape_sequence is 21 bits, so adjust limit in
code to match this.
Up to 10% faster on Cortex-A8.
Originally committed as revision 21153 to svn://svn.ffmpeg.org/ffmpeg/trunk
The maximum length of escape_sequence is 21 bits, so adjust limit in
code to match this. Also fix the comment.
Originally committed as revision 21151 to svn://svn.ffmpeg.org/ffmpeg/trunk
config.h must not be included in that file. The table generator runs
on the host system, but config.h describes the target.
Originally committed as revision 20620 to svn://svn.ffmpeg.org/ffmpeg/trunk
Måns Rullgård