[FFmpeg-trac] #6932(avcodec:open): Cross-compile fails in "libavcodec/libx264.c: In function ‘X264_frame’"
FFmpeg
trac at avcodec.org
Tue Dec 26 07:15:59 EET 2017
#6932: Cross-compile fails in "libavcodec/libx264.c: In function ‘X264_frame’"
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Reporter: hydra3333 | Owner:
Type: defect | Status: open
Priority: normal | Component: avcodec
Version: git-master | Resolution:
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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Comment (by hydra3333):
This seems to be related to the error message and possibly may be more
than an API change ? Just wondering.
http://git.videolan.org/?p=x264.git;a=commit;h=71ed44c7312438fac7c5c5301e45522e57127db4
"Drop the 'x264_bit_depth' global variable."
Unify 8-bit and 10-bit CLI and libraries
Add 'i_bitdepth' to x264_param_t with the corresponding '--output-depth'
CLI
option to set the bit depth at runtime.
Drop the 'x264_bit_depth' global variable. Rather than hardcoding it to an
incorrect value, it's preferable to induce a linking failure. If
applications
relies on this symbol this will make it more obvious where the problem is.
Add Makefile rules that compiles modules with different bit depths.
Assembly
on x86 is prefixed with the 'private_prefix' define, while all other archs
modify their function prefix internally.
Templatize the main C library, x86/x86_64 assembly, ARM assembly, AARCH64
assembly, PowerPC assembly, and MIPS assembly.
The depth and cache CLI filters heavily depend on bit depth size, so they
need to be duplicated for each value. This means having to rename these
filters, and adjust the callers to use the right version.
Unfortunately the threaded input CLI module inherits a common.h dependency
(input/frame -> common/threadpool -> common/frame -> common/common) which
is extremely complicated to address in a sensible way. Instead duplicate
the module and select the appropriate one at run time.
Each bitdepth needs different checkasm compilation rules, so split the
main
checkasm target into two executables.
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Ticket URL: <https://trac.ffmpeg.org/ticket/6932#comment:4>
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