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path: root/libavcodec/get_bits.h
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* Merge commit 'b574e1e97ea7067a5fcd3876e30a67df0e4e6611'Michael Niedermayer2014-09-05
|\ | | | | | | | | | | | | | | | | | | * commit 'b574e1e97ea7067a5fcd3876e30a67df0e4e6611': get_bits: Add OPEN_READER macro variant w/o size_plus8 Conflicts: libavcodec/get_bits.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * get_bits: Add OPEN_READER macro variant w/o size_plus8Diego Biurrun2014-09-05
| | | | | | | | This avoids a trillion warnings from MSVC.
* | Merge commit '91d305790ea0f6fe0f54b48236da42181c39c18b'Michael Niedermayer2014-09-02
|\| | | | | | | | | | | | | | | | | | | * commit '91d305790ea0f6fe0f54b48236da42181c39c18b': get_bits: Rename HAVE_BITS_REMAINING --> BITS_AVAILABLE Conflicts: libavcodec/golomb.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * get_bits: Rename HAVE_BITS_REMAINING --> BITS_AVAILABLEDiego Biurrun2014-09-02
| | | | | | | | The HAVE_ prefix is reserved for macros set by configure.
| * get_bits: Return pointer to buffer that is the result of the alignmentRonald S. Bultje2013-02-19
| | | | | | | | | | | | | | This allows more transparent mixing of get_bits and whole-byte access without having to touch get_bits internals. Signed-off-by: Martin Storsjö <martin@martin.st>
* | avcodec/get_bits: add BITS_LEFT() for finding the bits left with an opened ↵Michael Niedermayer2014-08-11
| | | | | | | | | | | | reader Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | get_bits: remove unused assignmentTimothy Gu2014-07-16
| | | | | | | | | | Signed-off-by: Timothy Gu <timothygu99@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | avcodec/bitstream: try to make vlc init code inherently thread safeMichael Niedermayer2014-06-16
| | | | | | | | | | | | also remove spinlock, it doesnt work on AIX Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | avcodec: better level/index printingMatthew Lindner2014-05-09
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* | avcodec: include GET_RL_VLC() in trace outputMichael Niedermayer2014-05-09
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | Various small spelling fixes.Reimar Döffinger2014-04-22
| | | | | | | | Signed-off-by: Reimar Döffinger <Reimar.Doeffinger@gmx.de>
* | avcodec/get_bits: add skip_1stop_8data_bitsMichael Niedermayer2013-10-30
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | skip_bits: dont call UPDATE_CACHEMichael Niedermayer2013-09-30
| | | | | | | | | | | | UPDATE_CACHE isnt needed and can cause segfaults Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | avcodec/get_bits: place volatile at the right spotMichael Niedermayer2013-07-30
| | | | | | | | | | | | Should fix Ticket2825 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | avcodec/get_bits: init_state is used for thread sync, make it volatileMichael Niedermayer2013-07-30
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | avcodec/ff_init_vlc_sparse: use a spinlock for thread syncMichael Niedermayer2013-07-29
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | get_bits: add get_bits_le()Paul B Mahol2013-07-05
| | | | | | | | Signed-off-by: Paul B Mahol <onemda@gmail.com>
* | get_xbits: assert validity of the number of bitsMichael Niedermayer2013-06-30
| | | | | | | | | | | | similar is already done in the other get_bits() functions Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | get_bits: return pointer to buffer that is the result of the alignment.Ronald S. Bultje2013-02-11
| | | | | | | | | | | | | | This allows more transparent mixing of get_bits and whole-byte access without having to touch get_bits internals. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | Merge commit '4af5310d29379283553bcd9f541a3f6c317f706e'Michael Niedermayer2013-01-22
|\| | | | | | | | | | | | | | | | | | | | | * commit '4af5310d29379283553bcd9f541a3f6c317f706e': get_bits/put_bits: K&R formatting cosmetics Conflicts: libavcodec/get_bits.h libavcodec/put_bits.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * get_bits/put_bits: K&R formatting cosmeticsDiego Biurrun2013-01-21
| | | | | | | | Signed-off-by: Diego Biurrun <diego@biurrun.de>
* | Merge commit '68f18f03519ae550e25cf12661172641e9f0eaca'Michael Niedermayer2013-01-21
|\| | | | | | | | | | | | | | | | | | | | | | | * commit '68f18f03519ae550e25cf12661172641e9f0eaca': videodsp_armv5te: remove #if HAVE_ARMV5TE_EXTERNAL dsputil: drop non-compliant "fast" qpel mc functions get_bits: change the failure condition in init_get_bits Conflicts: libavcodec/get_bits.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * get_bits: change the failure condition in init_get_bitsLuca Barbato2013-01-20
| | | | | | | | | | | | | | Too much code relies in having init_get_bits fed with a valid buffer and set its dimension to 0. Check for NULL buffer instead.
* | init_get_bits: fix off by 1 errorMichael Niedermayer2013-01-14
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | init_get_bits8: zero pointers & struct on errorMichael Niedermayer2013-01-14
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | init_get_bits8: check byte_size against being positiveMichael Niedermayer2013-01-14
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | Merge commit 'a1c525f7eb0783d31ba7a653865b6cbd3dc880de'Michael Niedermayer2013-01-14
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * commit 'a1c525f7eb0783d31ba7a653865b6cbd3dc880de': pcx: return meaningful error codes. tmv: return meaningful error codes. msrle: return meaningful error codes. cscd: return meaningful error codes. yadif: x86: fix build for compilers without aligned stack lavc: introduce the convenience function init_get_bits8 lavc: check for overflow in init_get_bits Conflicts: libavcodec/cscd.c libavcodec/pcx.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * lavc: introduce the convenience function init_get_bits8Luca Barbato2013-01-14
| | | | | | | | | | Accept the buffer size in bytes and check for overflow before passing the value in bits to init_get_bits.
| * lavc: check for overflow in init_get_bitsLuca Barbato2013-01-14
| | | | | | | | | | | | | | Fix an undefined behaviour and make the function return a proper error in case of overflow. CC: libav-stable@libav.org
* | Merge commit '096abfa15052977eed93f0b5e01afd2d47c53c1f'Michael Niedermayer2012-12-08
|\| | | | | | | | | | | | | | | | | | | | | | | | | * commit '096abfa15052977eed93f0b5e01afd2d47c53c1f': parser: fix large overreads bitstream: add get_bits64() to support reading more than 32 bits at once arm: detect cpu features at runtime on Linux Conflicts: libavcodec/parser.c libavformat/mpegts.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * bitstream: add get_bits64() to support reading more than 32 bits at onceMichael Niedermayer2012-12-07
| | | | | | | | | | | | | | Also remove a duplicate function in the MPEG-TS demuxer. Signed-off-by: Michael Niedermayer <michaelni@gmx.at> Signed-off-by: Justin Ruggles <justin.ruggles@gmail.com>
* | get_bits: rename get_bits_longlong to get_bits64Michael Niedermayer2012-12-08
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | get_bits: get_bits_long() support n=0 as the docs allow itMichael Niedermayer2012-10-06
| | | | | | | | | | | | also the 0 case is indeed used in some code pathes Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | bitstream: add get_bits_longlong() to support more than 32bitsMichael Niedermayer2012-09-30
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | get_bits_long: fix variable typeMichael Niedermayer2012-09-30
| | | | | | | | | | | | This fixes a theoretical signed overflow Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | Merge remote-tracking branch 'qatar/master'Michael Niedermayer2012-09-28
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * qatar/master: libopus: Remap channels using libopus' internal remapping. Opus decoder using libopus avcodec: document the use of AVCodecContext.delay for audio decoding vc1dec: add flush function for WMV9 and VC-1 decoders http: Increase buffer sizes to cope with longer URIs nutenc: const correctness for ff_put_v_trace/put_s_trace function arguments h264_refs: Fix debug tprintf argument types golomb: const correctness for get_ue()/get_se() function arguments get_bits: const correctness for get_bits_trace()/get_xbits_trace() arguments Conflicts: Changelog libavcodec/Makefile libavcodec/version.h libavformat/http.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * get_bits: const correctness for get_bits_trace()/get_xbits_trace() argumentsDiego Biurrun2012-09-27
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* | get_bits: check the number of bits parameter through av_assert2()Michael Niedermayer2012-04-07
| | | | | | | | Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
* | Merge remote-tracking branch 'qatar/master'Michael Niedermayer2012-02-25
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * qatar/master: docs: use -bsf:[vas] instead of -[vas]bsf. mpegaudiodec: Prevent premature clipping of mp3 input buffer. lavf: move the packet keyframe setting code. oggenc: free comment header for all codecs lcl: error out if uncompressed input buffer is smaller than framesize. mjpeg: abort decoding if packet is too large. golomb: use HAVE_BITS_REMAINING() macro to prevent infloop on EOF. get_bits: add HAVE_BITS_REMAINING macro. lavf/output-example: use new audio encoding API correctly. lavf/output-example: more proper usage of the new API. tiff: Prevent overreads in the type_sizes array. tiff: Make the TIFF_LONG and TIFF_SHORT types unsigned. apetag: do not leak memory if avio_read() fails apetag: propagate errors. SBR DSP x86: implement SSE sbr_hf_g_filt SBR DSP x86: implement SSE sbr_sum_square_sse SBR DSP: use intptr_t for the ixh parameter. Conflicts: doc/bitstream_filters.texi doc/examples/muxing.c doc/ffmpeg.texi libavcodec/golomb.h libavcodec/x86/Makefile libavformat/oggenc.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * get_bits: add HAVE_BITS_REMAINING macro.Ronald S. Bultje2012-02-24
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* | Merge remote-tracking branch 'qatar/master'Michael Niedermayer2012-02-16
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * qatar/master: (27 commits) ppc: Add ff_ prefix to nonstatic symbols sh4: Add ff_ prefix to nonstatic symbols mpegvideo: Add ff_ prefix to nonstatic functions rtjpeg: Add ff_ prefix to nonstatic symbols rv: Add ff_ prefix to nonstatic symbols vp56: Add ff_ prefix to nonstatic symbols vorbis: Add ff_ prefix to nonstatic symbols msmpeg4: Add ff_ prefix to nonstatic symbols vc1: Add ff_ prefix to nonstatic symbols msmpeg4: Add ff_ prefixes to nonstatic symbols snow: Add ff_ prefix to nonstatic symbols mpeg12: Add ff_ prefix to nonstatic symbols mpeg4: Add ff_ prefixes to nonstatic symbols lagarith: Add ff_ prefix to lag_rac_init libavcodec: Add ff_ prefix to j_rev_dct* dsputil: Add ff_ prefix to inv_zigzag_direct16 libavcodec: Prefix fdct_ifast, fdct_ifast248 dsputil: Add ff_ prefix to the dsputil*_init* functions libavcodec: Add ff_ prefix to some nonstatic symbols vlc/rl: Add ff_ prefix to the nonstatic symbols ... Conflicts: libavcodec/Makefile libavcodec/allcodecs.c libavcodec/dnxhddec.c libavcodec/ffv1.c libavcodec/h263.h libavcodec/h263dec.c libavcodec/h264.c libavcodec/mpegvideo.c libavcodec/mpegvideo_enc.c libavcodec/nuv.c libavcodec/ppc/dsputil_ppc.c libavcodec/proresdsp.c libavcodec/svq3.c libavcodec/version.h libavformat/dv.h libavformat/dvenc.c libavformat/matroskadec.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * vlc/rl: Add ff_ prefix to the nonstatic symbolsMartin Storsjö2012-02-15
| | | | | | | | Signed-off-by: Martin Storsjö <martin@martin.st>
* | Merge remote-tracking branch 'qatar/master'Michael Niedermayer2011-12-23
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * qatar/master: build: fix standalone compilation of OMA muxer build: fix standalone compilation of Microsoft XMV demuxer build: fix standalone compilation of Core Audio Format demuxer kvmc: fix invalid reads 4xm: Add a check in decode_i_frame to prevent buffer overreads adpcm: fix IMA SMJPEG decoding options: set minimum for "threads" to zero bsd: use number of logical CPUs as automatic thread count windows: use number of CPUs as automatic thread count linux: use number of CPUs as automatic thread count pthreads: reset active_thread_type when slice thread_init returrns early v410dec: include correct headers Drop ALT_ prefix from BITSTREAM_READER_LE name. lavfi: always build vsrc_buffer. ra144enc: zero the reflection coeffs if the filter is unstable sws: readd PAL8 to isPacked() mov: Don't stick the QuickTime field ordering atom in extradata. truespeech: fix invalid reads in truespeech_apply_twopoint_filter() Conflicts: configure libavcodec/4xm.c libavcodec/avcodec.h libavfilter/Makefile libavfilter/allfilters.c libavformat/Makefile libswscale/swscale_internal.h Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * Drop ALT_ prefix from BITSTREAM_READER_LE name.Diego Biurrun2011-12-22
| | | | | | | | | | The prefix is a historic remnant that probably meant "alternative". Now that the A32 bitstream reader has been dropped it makes no sense anymore.
* | Merge remote-tracking branch 'qatar/master'Michael Niedermayer2011-12-18
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * qatar/master: build: link test programs with static libraries dct-test: remove unused variable cropTbl swscale: fix overflow in gray16 vertical scaling. get_bits: remove LAST_SKIP_CACHE macro swscale: fix integer overflows in RGB pixel writing. swscale: add endian conversion for RGB555 and RGB444 pixel formats swscale: fix overflows in output of RGB48 pixels. get_bits: remove strange/obsolete comments get_bits: whitespace (mostly) cosmetics swscale: add rgb565 endianess conversion get_bits: remove unnecessary #includes mp3dec: hack: fix decoding with safe bitstream reader fate: fix eatqi test adpcm: Check for channels to be a non-zero integer swscale: fix overflows in RGB rounding constants. get_bits: introduce safe bitreading to prevent overreads. Conflicts: libswscale/swscale.c libswscale/swscale_unscaled.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
| * get_bits: remove LAST_SKIP_CACHE macroMans Rullgard2011-12-17
| | | | | | | | | | | | This macro is empty since the removal of the A32 bitstream reader. Signed-off-by: Mans Rullgard <mans@mansr.com>
| * get_bits: remove strange/obsolete commentsMans Rullgard2011-12-17
| | | | | | | | Signed-off-by: Mans Rullgard <mans@mansr.com>
| * get_bits: whitespace (mostly) cosmeticsMans Rullgard2011-12-17
| | | | | | | | Signed-off-by: Mans Rullgard <mans@mansr.com>
| * get_bits: remove unnecessary #includesMans Rullgard2011-12-17
| | | | | | | | Signed-off-by: Mans Rullgard <mans@mansr.com>
| * get_bits: introduce safe bitreading to prevent overreads.Ronald S. Bultje2011-12-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When turned on, H264/CAVLC gets ~15% (CVPCMNL1_SVA_C.264) slower for ultra-high-bitrate files, or ~2.5% (CVFI1_SVA_C.264) for lower-bitrate files. Other codecs are affected to a lesser extent because they are less optimized; e.g., VC-1 slows down by less than 1% (all on x86). The patch generated 3 extra instructions (cmp, cmovae and mov) per call to get_bits(). The performance penalty on ARM is within the error margin for most files, up to 4% in extreme cases such as CVPCMNL1_SVA_C.264. Based on work (for GCI) by Aneesh Dogra <lionaneesh@gmail.com>, and inspired by patch in Chromium by Chris Evans <cevans@chromium.org>.
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