FFmpeg

Commit Graph

Author	SHA1	Message	Date
Andreas Rheinhardt	6bf99f8c93	avcodec/huffyuv: Update outdated link Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	2 years ago
Andreas Rheinhardt	cad1593330	avcodec/huffyuv: Speed up generating Huffman codes The codes here have the property that the long codes are to the left of the tree (each zero bit child node is by definition to the left of its one bit sibling); they also have the property that among codes of the same length, the symbol is ascending from left to right. These properties can be used to create the codes from the lengths in only two passes over the array of lengths (the current code uses one pass for each length, i.e. 32): First one counts how many nodes of each length there are. Then one calculates the range of codes of each length (possible because the codes are ordered by length in the tree). This enables one to calculate the actual codes with only one further traversal of the length array. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	2 years ago
Andreas Rheinhardt	566280c3f4	avcodec/huffyuv: Split HYuvContext into decoder and encoder context While the share of elements used by both is quite big, the amount of code shared between the decoders and encoders is negligible. Therefore one can easily split the context if one wants to. The reasons for doing so are that the non-shared elements are non-negligible: The stats array which is only used by the encoder takes 524288B of 868904B (on x64); similarly, pix_bgr_map which is only used by the decoder takes 16KiB. Furthermore, using a shared context also entails inclusions of unneeded headers like put_bits.h for the decoder and get_bits.h for the encoder (and all of these and much more for huffyuv.c). Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	2 years ago
Andreas Rheinhardt	83a8b9fac7	avcodec/huffyuv: Inline ff_huffyuv_common_init() in its callers This is in preparation for splitting HYuvContext. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	2 years ago
Andreas Rheinhardt	2415f5158b	avcodec/huffyuv: Use AVCodecContext.(width\|height) directly These parameters are easily accessible whereever they are accessed, so using copies from HYuvContext is unnecessary. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	2 years ago
Andreas Rheinhardt	59535346b1	avocdec/huffyuvdec: Don't use HYuvContext.avctx It is nearly unused anyway, so stop use the field altogether. This is in preparation for splitting HYuvContext into decoder and encoder contexts. Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>	2 years ago
James Almer	30c1f27299	huffyuvencdsp: move functions only used by huffyuv from lossless_videodsp Signed-off-by: James Almer <jamrial@gmail.com>	8 years ago
Diego Biurrun	c67b449beb	dsputil: Split bswap*_buf() off into a separate context	11 years ago
Diego Biurrun	0d439fbede	dsputil: Split off HuffYUV decoding bits into their own context Also shorten HuffYUV context member names to avoid clutter.	11 years ago
Michael Niedermayer	4332b01c30	avcodec/huffyuv: simplify allocation of temporaries This also fixes a null pointer dereference with rgb and plane prediction Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	2a9c50798b	avcodec/huffyuv: dont depend on bitstream_bpp having a specific value for version>2 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	7cf8918b0d	avcodec/huffyuv: update years in copyright Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	eaacfc7dd1	avcodec/lossless_videodsp: Pass AVCodecContext to init Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	f70d7eb20c	Move add/diff_int16 to lossless_videodsp Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	b53aab1a58	libavcodec/huffyuv: >8 bit support This adds only yuv420p10, others are trivial to add after this commit and will be added in a subsequent commit. Currently the implementation is not optimized, optimizations will be added later Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Diego Biurrun	c242bbd8b6	Remove unnecessary dsputil.h #includes	12 years ago
Anton Khirnov	2ca5ca2957	huffyuv: split encoder and decoder into separate files.	12 years ago
Paul B Mahol	4d1912ff4d	huffyuv: return meaningful error codes Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Paul B Mahol	4a722a5cab	huffyuv: check for malloc failures Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Paul B Mahol	7f261ac850	huffyuv: make use of av_fast_padded_malloc() Signed-off-by: Paul B Mahol <onemda@gmail.com>	12 years ago
Anton Khirnov	df9b956751	lavc: fix decode_frame() third parameter semantics for video decoders It's got_frame, not data size	12 years ago
Michael Niedermayer	6abb9a901f	huffyuvdec: check width more completely, avoid out of array accesses Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Anton Khirnov	716d413c13	Replace PIX_FMT_* -> AV_PIX_FMT_*, PixelFormat -> AVPixelFormat	12 years ago
Diego Biurrun	14d3e7ad11	Remove some silly disabled code.	12 years ago
Michael Niedermayer	5a582bd3b5	huffman: add ff_huff_gen_len_table The function will be used by utvideo as well. Signed-off-by: Luca Barbato <lu_zero@gentoo.org>	13 years ago
Luca Barbato	e0f7a9f6e7	huffyuv: update to current coding style	13 years ago
Michael Niedermayer	3f943fe681	huffman/huffyuv: move lorens huffman table generation code to huffman.c/h Reviewed-by: Derek Buitenhuis <derek.buitenhuis@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Anton Khirnov	36ef5369ee	Replace all CODEC_ID_* with AV_CODEC_ID_*	13 years ago
Michael Niedermayer	4b5c7d4d9a	huffyuv: switch to av_assert Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Martin Storsjö	00c3b67b8a	cosmetics: Align codec declarations Also break some long lines, remove codec function placeholder comments and add spaces in sample/pixel format lists. Signed-off-by: Martin Storsjö <martin@martin.st>	13 years ago
Paul B Mahol	ae2c33b0c2	cosmetics: remove superfluous curly brackets Signed-off-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Paul B Mahol	0e465c1a81	huffyuv: remove long time disabled code Signed-off-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Paul B Mahol	3a085c6a37	huffyuv: do not decode/encode yuv colorspace with odd width Signed-off-by: Paul B Mahol <onemda@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	e180079c1f	huffyuvenc: switch to ff_alloc_packet2() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	c743aad557	huffyuv: some more consts Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Ronald S. Bultje	4ffe5e2aa5	huffyuv: add padding to classic (v1) huffman tables. We slightly overread the input buffer, so we require padding at the end of the buffer, as is documented in the get_bits API. Without padding, we'll read uninitialized data or beyond the end of the .rodata, which may crash. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	13 years ago
Alex Converse	3574a85ce5	Replace computations of remaining bits with calls to get_bits_left().	13 years ago
Michael Niedermayer	8fdd93eaad	huffyuv: pad classic huffman tables so as to avoid bitreader overread. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Ronald S. Bultje	63c9de6469	huffyuv: do not abort on unknown pix_fmt; instead, return an error. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	13 years ago
Anton Khirnov	bc9c70e5a3	huffyuv: switch to encode2().	13 years ago
Ronald S. Bultje	84c202cc37	huffyuv: error out on bit overrun. On EOF, get_bits() will continuously return 0, causing an infinite loop. Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org	13 years ago
Martin Storsjö	9cf0841ef3	dsputil: Add ff_ prefix to the dsputil_init functions Signed-off-by: Martin Storsjö <martin@martin.st>	13 years ago
Martin Storsjö	e96b4a53df	vlc/rl: Add ff_ prefix to the nonstatic symbols Signed-off-by: Martin Storsjö <martin@martin.st>	13 years ago
Justin Ruggles	560f773c7d	avcodec: change number of plane pointers from 4 to 8 at next major bump. Add AV_NUM_DATA_POINTERS to simplify the bump transition. This will allow for supporting more planar audio channels without having to allocate separate pointer arrays.	13 years ago
Michael Niedermayer	ae5873f13b	huffyuvenc: switch from alphaless rgb32 to rgb24 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	d3fc335bac	huffyuvenc: support alphaless rgb32 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Michael Niedermayer	0af7d7082f	huffyuvenc: store alpha for bgr32 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	13 years ago
Anton Khirnov	ec6402b7c5	lavc: use designated initialisers for all codecs. It's more readable and less prone to breakage.	14 years ago
Stefano Sabatini	01042d4123	lavc: set defaults in internal codec frames This is required specifically for setting frame->format to -1, otherwise it will be set to 0 = PIX_FMT_YUV420P and code reading the format from the output decoded frame will get misled. In particular fix regressions occurring with the pending vsrc_buffer patch.	14 years ago
Stefano Sabatini	ce5e49b0c2	replace deprecated FF__TYPE symbols with AV_PICTURE_TYPE_	14 years ago

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202 Commits (6b4165643dcfbf6ead55c00f68406874d7e1a9d4)