FFmpeg

Commit Graph

Author	SHA1	Message	Date
Thierry Foucu	efbe84eb1b	avcodec/mpeg12dec: use init_get_bits8 and check the return value Signed-off-by: James Almer <jamrial@gmail.com>	2 years ago
Paul B Mahol	99bd2dbc91	swresample/swresample_frame: fix regression in detecting changes Do not overwrite return variable values, instead use different one for checking results.	2 years ago
Anton Khirnov	a0b5aaceca	lavc/libx265: restructure handling reordered_opaque Current code stores a pointer to allocated data in libx265 and frees it when the encoded packet is retrieved. This will leak if the packet is never retrieved, e.g. if the encoder is closed without being flushed. Restructure the code such that only indices to an array stored in our private data are given to libx265. This ensures no allocated memory can be lost.	2 years ago
Anton Khirnov	7399e5305c	lavc/libx264: do not leave an invalid array size on alloc error	2 years ago
Anton Khirnov	a4a81be1a8	lavc/libx264: zero reordered opaque on alloc This is safer.	2 years ago
Anton Khirnov	141303f323	lavc/libx264: print an error on invalid opaque pointer	2 years ago
Anton Khirnov	89761c2122	lavc/libx264: use a local variable to shorten code	2 years ago
Anton Khirnov	4469ce10a6	lavc/libx264: reindent after previous commit	2 years ago
Anton Khirnov	9ed5b0ac3b	lavc/libx264: reorder control flow in setup_roi() to reduce nesting depth	2 years ago
Anton Khirnov	ce5b2d34b4	lavc/libx264: reindent after previous commit	2 years ago
Anton Khirnov	e17b609fc6	lavc/libx264: do not ignore memory allocation errors	2 years ago
Anton Khirnov	cccd2c2179	lavc/libx264: unify cleanup in setup_frame()	2 years ago
Anton Khirnov	87eb362693	lavc/libx264: reindent after previous commit	2 years ago
Anton Khirnov	b1a184283b	lavc/libx264: factor out setting up ROI	2 years ago
Anton Khirnov	c7a8a6939b	lavc/libx264: use a local variable for input frame in setup_frame()	2 years ago
Anton Khirnov	9f8f980165	lavc/libx264: reindent after previous commit	2 years ago
Anton Khirnov	33cbba165c	lavc/libx264: factor out setting up the input frame X264_frame() is currently too large and complex.	2 years ago
James Almer	a781279871	avformat/oggenc: don't flush twice when the last packet is side data only Commit `18f24527eb` accidentally made side data only packets be handled like a flush request. Fix this regression by effectively ignoring them as was the original intention. Signed-off-by: James Almer <jamrial@gmail.com>	2 years ago
James Almer	99e3d26f20	avformat/mux: use only valid timestamps when calculating packet distance Fixes: signed integer overflow: 0 - -9223372036854775808 cannot be represented in type 'long int' Fixes: fate-cover-art-aiff-id3v2-remux, fate-cover-art-mp3-id3v2-remux and fate-mov-cover-image under ubsan. Signed-off-by: James Almer <jamrial@gmail.com>	2 years ago
Clément Bœsch	6e05622216	avfilter/paletteuse: use explicit key indexes in set_frame_lut	2 years ago
Clément Bœsch	68275043a0	avfilter/paletteuse: add atkinson dithering Atkinson according to https://bisqwit.iki.fi/jutut/kuvat/ordered_dither/error_diffusion.txt: * 1 1 / 8 1 1 1 1	2 years ago
Clément Bœsch	c973e8ae79	avfilter/paletteuse: add burkes dithering Burkes according to https://bisqwit.iki.fi/jutut/kuvat/ordered_dither/error_diffusion.txt: * 8 4 2 4 8 4 2 / 32	2 years ago
Clément Bœsch	9973343bf9	avfilter/paletteuse: add sierra3 dithering Sierra3 according to https://bisqwit.iki.fi/jutut/kuvat/ordered_dither/error_diffusion.txt: * 5 3 2 4 5 4 2 2 3 2 / 32	2 years ago
Clément Bœsch	11926c4bd4	avfilter/palette{gen,use}: misc for-loop cosmetics	2 years ago
Clément Bœsch	1340fe7caf	avfilter/paletteuse: move r,g,b computation in a more local scope	2 years ago
Clément Bœsch	1ae1b707e2	avfilter/paletteuse: remove mean error tool This belongs in another filter.	2 years ago
Clément Bœsch	8789a9e05b	avfilter/paletteuse: remove alternative search methods This is a maintenance pain more than anything. It appears to make the code slightly faster as a side effect.	2 years ago
Clément Bœsch	0f7942afa6	avfilter/paletteuse: switch to recursive method It appears faster than the iterative method on my machine (1.06x faster), so I'm guessing compilers improved over time (the iterative version was slightly faster in the past).	2 years ago
Clément Bœsch	6c7b54e962	avfilter/paletteuse: use lowbias32 for color hashing Impact is more negligible than previous commit but still faster (1.02x).	2 years ago
Clément Bœsch	c9084cd0e2	avfilter/palettegen: use lowbias32 for color hashing 1.12x faster overall in palettegen on my machine.	2 years ago
Clément Bœsch	3cafbdc083	avfilter/palette: add lowbias32 hashing	2 years ago
Clément Bœsch	051926868c	avfilter/palette{gen,use}: update Copyright after recent changes	2 years ago
Clément Bœsch	3a4a6c7815	avfilter/palettegen: use libc qsort Now that the sort function is deterministic, we can rely on the libc sorting function.	2 years ago
Clément Bœsch	8057e1a618	avfilter/palettegen: make refs order deterministic Currently, in case of equality on the first color channel, the order of the ref colors is defined by the hashing function. This commit makes the sorting deterministic and improve the hierarchical ordering.	2 years ago
Clément Bœsch	2441e53c0a	avfilter/palettegen: add a warning about supporting only sRGB	2 years ago
Clément Bœsch	9026d92c13	avfilter/palettegen: base box split decision on a perceptual model Similar to the change in paletteuse, we rely on a perceptual model to decide how and where to split the box.	2 years ago
Clément Bœsch	724f52b906	avfilter/palettegen: switch to signed arithmetic This prevents mixed sign arithmetic (typically because we have signed color channel differences), which has nasty side effects in C.	2 years ago
Clément Bœsch	67ce6ad9a2	avfilter/palettegen: rename local variable box_weight to weight This variable is used only for the running weight (used to reach the target median). The places where we actually need the box weight are changed to use box->weight.	2 years ago
Clément Bœsch	61d334d8c3	avfilter/palettegen: misc cosmetics	2 years ago
Clément Bœsch	efb0a6f6ce	avfilter/palettegen: compute average color within compute_box_stats()	2 years ago
Clément Bœsch	dafd43b78d	avfilter/palettegen: change cut score from ∑e² to max e² This is following the results from personal research¹. ¹: https://github.com/ubitux/research/tree/main/color-quantization#results	2 years ago
Clément Bœsch	187f5e7f90	avfilter/palettegen: rename variance to cut_score "Variance" wasn't exactly the correct word; "cut score" is more agnostic, which will be useful when changing the algorithm in the next commit.	2 years ago
Clément Bœsch	e49fc1a6ef	avfilter/palettegen: always compute the box variance The variance computation is simple enough now (since we can use the axis squared errors) that it doesn't need to have a complex lazy computation logic.	2 years ago
Clément Bœsch	9e5f494d26	avfilter/palettegen: use box->major_axis without intermediate variable	2 years ago
Clément Bœsch	86bced7c65	avfilter/palettegen: define the best axis to cut using the squared error This is following the results from personal research¹. ¹: https://github.com/ubitux/research/tree/main/color-quantization#results	2 years ago
Clément Bœsch	21f7814238	avfilter/palettegen: move box stats computation to a dedicated function	2 years ago
Clément Bœsch	a0587c0219	avfilter/paletteuse: switch to a perceptual model Now the selection of the color is based on a distance built around human perception of color instead of the unreliable sRGB triplet one.	2 years ago
Clément Bœsch	1159c36d6d	avfilter/paletteuse: remove redundant alpha condition This is redundant with a != 0xff below.	2 years ago
Clément Bœsch	4c061bc837	avfilter/paletteuse: remove unused alpha split dimension The equalities in the w{r,g,b} range checks make sure longest is never 0. Even if the alpha ended up being selected in get_next_color() it would cause underread memory accesses in its caller (colormap_insert).	2 years ago
Clément Bœsch	71ed92e9c4	avfilter/paletteuse: name target color arg consistently in colormap functions	2 years ago

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