The Vorbis encoder has an array of a structure containing all
the ingredients for a codebook; this includes a pointer to
the actual codebook and some even have a pointer to an array
containing quant values. Each of these real codebooks is
an array of its own.
These pointers lead to relocations and therefore the array will
be placed in .data.rel.ro and not in .rodata.
This commit avoids the pointers altogether by combining all the actual
codebooks into one big array; the actual codebooks are now accessed
consecutively by incrementing the pointer used to access them by the
length of the actual codebook that has just been dealt with (said length
is contained in the structure describing the codebook). There is
no downside to this given that these codebooks are already only used
once during init.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This avoids an indirection in the table. Data size is slightly
smaller on 64-bit systems, 8 bytes larger on 32-bit.
Signed-off-by: Mans Rullgard <mans@mansr.com>
(cherry picked from commit 214a85202b2eedbef06357e40278c2f56aa2c6e3)
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
Consistently apply this rule: the guard name is obtained from the
filename by stripping the leading "lib", converting '/' and '.' to
'_' and uppercasing the resulting name. Guard names in the root
directory have to be prefixed by "FFMPEG_".
Originally committed as revision 15120 to svn://svn.ffmpeg.org/ffmpeg/trunk
Andreas Rheinhardt
Mans Rullgard
Diego Biurrun
Stefano Sabatini
Guillaume Poirier
Oded Shimon