This is more spec-compliant because it does not rely
on dead-code elimination by the compiler. Especially
MSVC has problems with this, as can be seen in
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/296373.html
or
https://ffmpeg.org/pipermail/ffmpeg-devel/2022-May/297022.html
This commit does not eliminate every instance where we rely
on dead code elimination: It only tackles branching to
the initialization of arch-specific dsp code, not e.g. all
uses of CONFIG_ and HAVE_ checks. But maybe it is already
enough to compile FFmpeg with MSVC with whole-programm-optimizations
enabled (if one does not disable too many components).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
Move AC3HeaderInfo into ac3_parser_internal.h and the rest
into a new header ac3defs.h.
This also breaks an include cycle of ac3.h and ac3tab.h
(the latter now only needs ac3defs.h).
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
* commit 'a9ba59591ed509fb7e6decfde8da4cbfd4ddf4b8':
ac3dsp: Add some special-case handling for the C downmix function
Merged-by: Clément Bœsch <u@pkh.me>
Adds a wrapper function for downmixing which detects channel count changes
and updates the selected downmix function accordingly.
Simplification and porting to current x86inc infrastructure by Diego Biurrun.
Signed-off-by: Diego Biurrun <diego@biurrun.de>
Also use (float **) instead of (float (*)[2]). This matches the matrix
layout in libavresample so we can reuse assembly code between the two.
Signed-off-by: Diego Biurrun <diego@biurrun.de>
* commit '9abc80f1ed673141326341e26a05c3e1f78576d0':
libavcodec: Make use of av_clip functions
Conflicts:
libavcodec/takdec.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '831a1180785a786272cdcefb71566a770bfb879e':
Update dsputil- and SIMD-related comments to match reality more closely
Conflicts:
libavcodec/x86/hpeldsp.asm
libavutil/arm/float_dsp_init_arm.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* commit '30b39164256999efc8d77edc85e2e0b963c24834':
ac3dec: make downmix() take array of pointers to channel data
Conflicts:
libavcodec/ac3dsp.c
libavcodec/ac3dsp.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
x86: vc1: call ff_vc1dsp_init_x86() under if (ARCH_X86)
x86: cavs: call ff_cavsdsp_init_x86() under if (ARCH_X86)
x86: call most of the x86 dsp init functions under if (ARCH_X86)
doc: support the new website layout
doc: remove a warning from filters.texi
doc: initial nut documentation
segment: drop global headers setting
lavu: fix typo in Makefile
Conflicts:
doc/Makefile
doc/filters.texi
doc/t2h.init
libavcodec/fmtconvert.c
libavcodec/proresdsp.c
libavcodec/x86/Makefile
libavcodec/x86/vc1dsp_mmx.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
os_support: Choose between direct.h and io.h using a configure check
os_support: Include io.h instead of direct.h on mingw32ce
x86: ac3dsp: Only refer to the ac3_downmix_sse symbol if it has been declared
swscale: Remove two bogus asserts
ac3: move ac3_downmix() from dsputil to ac3dsp
lavr/audio_mix_matrix: acknowledge the existence of LFE2.
mlp_parser: avoid mapping multiple disctinct TrueHD channels to the same Libav channel.
lavu/audioconvert: add a second low frequency channel.
Conflicts:
doc/APIchanges
libavcodec/ac3dsp.c
libavcodec/ac3dsp.h
libavcodec/mlp_parser.c
libavutil/audioconvert.c
libavutil/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master: (22 commits)
frwu: Employ more meaningful return values.
fraps: Use av_fast_padded_malloc() instead of av_realloc()
mjpegdec: use av_fast_padded_malloc()
eatqi: use av_fast_padded_malloc()
asv1: use av_fast_padded_malloc()
avcodec: Add av_fast_padded_malloc().
swscale: enable dithering in MMX functions.
swscale: make rgb24 function macros slightly smaller.
avcodec.h: Remove some disabled cruft.
swscale: remove obsolete comment.
swscale-test: Drop unused argc and argv arguments from main().
zmbv: Employ more meaningful return values.
zmbvenc: Employ more meaningful return values.
vc1: prevent null pointer dereference on broken files
zmbv: check av_realloc() return values and avoid memleaks on ENOMEM
truespeech: align buffer
ac3: Do not read past the end of ff_ac3_band_start_tab.
dv: Fix small stack overread related to CVE-2011-3929 and CVE-2011-3936.
dv: Fix null pointer dereference due to ach=0
dv: check stype
...
Conflicts:
doc/APIchanges
libavcodec/asv1.c
libavcodec/avcodec.h
libavcodec/eatqi.c
libavcodec/fraps.c
libavcodec/frwu.c
libavcodec/zmbv.c
libavformat/dv.c
libswscale/swscale.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
get_bits: remove x86 inline asm in A32 bitstream reader
doc: Remove outdated information about our issue tracker
avidec: Factor out the sync fucntionality.
fate-aac: Expand coverage.
ac3dsp: add x86-optimized versions of ac3dsp.extract_exponents().
ac3dsp: simplify extract_exponents() now that it does not need to do clipping.
ac3enc: clip coefficients after MDCT.
ac3enc: add int32_t array clipping function to DSPUtil, including x86 versions.
swscale: for >8bit scaling, read in native bit-depth.
matroskadec: matroska_read_seek after after EBML_STOP leads to failure.
doxygen: fix usage of @file directive in libavutil/{dict,file}.h
doxygen: Help doxygen parser to understand the DECLARE_ALIGNED and offsetof macros
Conflicts:
doc/issue_tracker.txt
libavformat/avidec.c
libavutil/dict.h
libswscale/swscale.c
libswscale/utils.c
tests/ref/lavfi/pixfmts_scale
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master: (27 commits)
ac3enc: fix LOCAL_ALIGNED usage in count_mantissa_bits()
ac3dsp: do not use the ff_* prefix when referencing ff_ac3_bap_bits.
ac3dsp: fix loop condition in ac3_update_bap_counts_c()
ARM: unbreak build
ac3enc: modify mantissa bit counting to keep bap counts for all values of bap instead of just 0 to 4.
ac3enc: split mantissa bit counting into a separate function.
ac3enc: store per-block/channel bap pointers by reference block in a 2D array rather than in the AC3Block struct.
get_bits: add av_unused tag to cache variable
sws: replace all long with int.
ARM: aacdec: fix constraints on inline asm
ARM: remove unnecessary volatile from inline asm
ARM: add "cc" clobbers to inline asm where needed
ARM: improve FASTDIV asm
ac3enc: use LOCAL_ALIGNED macro
APIchanges: fill in git hash for av_get_pix_fmt_name (0420bd7).
lavu: add av_get_pix_fmt_name() convenience function
cmdutils: remove OPT_FUNC2
swscale: fix crash in bilinear scaling.
vpxenc: add VP8E_SET_STATIC_THRESHOLD mapping
webm: support stereo videos in matroska/webm muxer
...
Conflicts:
Changelog
cmdutils.c
cmdutils.h
doc/APIchanges
doc/muxers.texi
ffmpeg.c
ffplay.c
libavcodec/ac3enc.c
libavcodec/ac3enc_float.c
libavcodec/avcodec.h
libavcodec/get_bits.h
libavcodec/libvpxenc.c
libavcodec/version.h
libavdevice/libdc1394.c
libavformat/matroskaenc.c
libavutil/avutil.h
libswscale/rgb2rgb.c
libswscale/swscale.c
libswscale/swscale_template.c
libswscale/x86/swscale_template.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master:
ALPHA: Replace sized int_fast integer types with plain int/unsigned.
Duplicate DPX image encoder
Duplicate DPX decoder: read sample aspect ratio
Duplciate DPX decoder: add buffer size checks.
ac3enc: clip large coefficient values and negative exponents rather than using av_assert2().
ac3enc: do not store a bandwidth code for each channel.
ac3enc: remove bandwidth reduction as fallback for bit allocation failure.
ac3enc: merge compute_exp_strategy_ch() into compute_exp_strategy()
ac3enc: return error if frame+exponent bits are too large instead of using av_assert2().
ac3enc: differentiate between current block and reference block in bit_alloc()
ac3enc: simplify exponent_init() by calculating exponent_group_tab[] based on exponent group sizes.
ac3enc: simplify stereo rematrixing decision options
Include both URLs: Update URL to fate samples
Conflicts:
Changelog
doc/fate.txt
libavcodec/ac3enc.c
libavcodec/dpxenc.c
libavcodec/version.h
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* qatar/master: (22 commits)
ac3enc: move extract_exponents inner loop to ac3dsp
avio: deprecate url_get_filename().
avio: deprecate url_max_packet_size().
avio: make url_get_file_handle() internal.
avio: make url_filesize() internal.
avio: make url_close() internal.
avio: make url_seek() internal.
avio: cosmetics, move AVSEEK_SIZE/FORCE declarations together
avio: make url_write() internal.
avio: make url_read_complete() internal.
avio: make url_read() internal.
avio: make url_open() internal.
avio: make url_connect internal.
avio: make url_alloc internal.
applehttp: Merge two for loops
applehttp: Restructure the demuxer to use a custom AVIOContext
applehttp: Move finished and target_duration to the variant struct
aacenc: reduce the number of loop index variables
avio: deprecate url_open_protocol
avio: deprecate url_poll and URLPollEntry
...
Conflicts:
libavformat/applehttp.c
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* newdev/master:
ac3enc: move compute_mantissa_size() to ac3dsp
ac3enc: move mant*_cnt and qmant*_ptr out of AC3EncodeContext
Remove support for stripping executables
ac3enc: NEON optimised float_to_fixed24
ac3: move ff_ac3_bit_alloc_calc_bap to ac3dsp
dfa: protect pointer range checks against overflows.
Duplicate: mimic: implement multithreading.
Merged-by: Michael Niedermayer <michaelni@gmx.at>
* newdev/master:
matroskadec: set default duration for simple block
When building for MinGW32 disable strict ANSI compliancy.
ARM: fix ff_apply_window_int16_neon() prototype
configure: check for --as-needed support early
ARM: NEON optimised apply_window_int16()
ac3enc: NEON optimised shift functions
ac3enc: NEON optimised ac3_max_msb_abs_int16 and ac3_exponent_min
mpeg12.c: fix slice threading for mpeg2 field picture mode.
ffmetadec.c: fix compiler warnings.
configure: Don't explicitly disable ffplay or in/outdevices on dos
configure: Remove the explicit disabling of ffserver
configure: Add fork as a dependency to ffserver
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Geoff Hill
James Almer
Rémi Denis-Courmont
Andreas Rheinhardt
Lynne
Anton Khirnov
Clément Bœsch
Justin Ruggles
Clément Bœsch
Diego Biurrun
Michael Niedermayer
Peter Meerwald
Nedeljko Babic
Mans Rullgard
Bojan Zivkovic
Janne Grunau