FFmpeg

Commit Graph

Author	SHA1	Message	Date
Michael Niedermayer	82a60de3b7	avcodec/pngdec: handle 4 more bytes with SIMD for RGB64 in paeth prediction Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	ed9be7dd47	avcodec/x86/pngdsp: fix off by 1 error This fixes artifacts in the last pixel of rows with some widths and pixel formats Found-by: Dominique Leroux <Dominique.Leroux@autodesk.com> Tested-by: Dominique Leroux <Dominique.Leroux@autodesk.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	4fa2758c79	avcodec/pngdec: check av_image_get_linesize return value Fixes CID 1257012 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	0f6931f4b6	avcodec/pngdec: use memcpy instead of byte loops for P frames. Rely on the way memcpy is optimized for one's system instead of looping on a byte buffer for buffer copies to handle P frames. Tested-by: Christophe Gisquet <christophe.gisquet@gmail.com> Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	1d69ab9d1c	avcodec/pngdec: fix indentation in handle_row() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	6e9b060e4f	avcodec/pngdec: fix mem leak in init() Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	08aec6f68e	libavcodec/pngdec: support 'previous' dispose operation for APNG. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	543fceba9c	apng: move shared header from avformat to avcodec. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	ebf2052a61	avcodec/pngdec: apng: fix output buffer filling when no blending is needed. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	af8804ac86	avcodec/pngdec: allow for some code path optimizations. Use 'if (CONFIG_APNG_DECODER)' where needed, so that the compiler can optimize out some portion of code. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	aff50ae1d1	avcodec/pngdec: do not blend on transparent black There is no need to memset the zlib output buffer, as there is no blending happening there. Instead, do not blend when the dispose operation is set to 'background' (tranparent black). Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	cfd83a8af6	avcodec/pngdec: add support for 'over' blend operation for 'none' dispose operation. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	7dfee8d697	avcodec/pngdec: split P frames handling to a separate function. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	9a53707e86	avcodec/pngdec: Fix paeth prediction with small images Fixes out of array read Fixes: asan_heap-oob_20b0a06_1962_cov_1907976991_delete_node_small.png Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	79ceaf827b	avcodec/pngdec: Check IHDR/IDAT order Fixes out of array access Fixes: asan_heap-oob_20a6c26_2690_cov_3434532168_mail.png Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	33acebd3cc	avcodec/pngdec: add APNG support. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	00df32f6a9	avcodec/pngdec: split frame decoding in its own function. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	8cab24df07	avcodec/pngdec: create a function to handle small (<=4) bits per pixel values. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	24ca2ffad8	avcodec/pngdec: use else if instead of if for small bpp handling. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	c25b6ae8a2	avcodec/pngdec: fix some indentation/whitespaces Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	6499e63f7b	avcodec/pngdec: create a function to decode tRNS chunk. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	4f313a50ee	avcodec/pngdec: create a function to decode PLTE chunk. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	b35fa04152	avcodec/pngdec: create a function to decode IDAT chunk. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	3f1eaf590c	avcodec/pngdec: create a function to decode pHYs chunk. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	1523d1484d	avcodec/pngdec: create a function to decode IHDR chunk. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Benoit Fouet	98abb98cb1	avcodec/pngdec: rename decode_frame to decode_frame_png Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	e830902934	avcodec/pngdec: Calculate MPNG bytewidth more defensively Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	3e2b745020	avcodec/pngdec: Check bits per pixel before setting monoblack pixel format Fixes out of array accesses Fixes: asan_heap-oob_14dbfcf_4_asan_heap-oob_1ce5767_179_add_method_small.png Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Michael Niedermayer	a6153bde3d	avcodec/pngdec: print the actual number of bytes left in the error case Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	10 years ago
Vittorio Giovara	e64f0bf2d2	png: support reading gray+alpha at 16 bits	10 years ago
Vittorio Giovara	2257165bff	png: disable broken MMX/SIMD code for bpp <= 2 The decoder was producing different results when ASM was disabled. Based on a long debug session with Kostya.	10 years ago
Vittorio Giovara	e96c3b81ca	avutil: rename AV_PIX_FMT_Y400A to AV_PIX_FMT_YA8 The rationale is that you have a packed format in form <greyscale sample> <alpha sample> <greyscale sample> <alpha sample> and shortening greyscale to 'G' might make one thing about Greenscale instead. An alias pixel format and color space name are provided for compatibility.	10 years ago
Vittorio Giovara	92a36a6b33	pngdec: correctly indent macros	10 years ago
Michael Niedermayer	c163f5e601	avcodec/pngdec: fix () in OP_* macros Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Vittorio Giovara	c598b569fb	png: K&R formatting cosmetics	11 years ago
Carl Eugen Hoyos	666749f669	Decode png images without iend chunk. Fixes ticket #3357.	11 years ago
Michael Niedermayer	cb079b1b2b	avcodec/pngdec: fix signed overflow fixes fate ftrapv failure Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Diego Biurrun	b2bed9325d	cosmetics: Group .name and .long_name together in codec/format declarations	11 years ago
Martin Storsjö	a81cad8f86	pngdec: Stop trying to decode once inflate returns Z_STREAM_END If the input buffer contains more data after the deflate stream, the loop previously left running infinitely, with inflate returning Z_STREAM_END. Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind CC: libav-stable@libav.org Signed-off-by: Martin Storsjö <martin@martin.st>	11 years ago
Michael Niedermayer	65bf9a44d7	avcodec/pngdec: check for stream end in png_decode_idat() Fix infinite loop Fix Ticket2978 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Paul B Mahol	7d7b4e8d5c	avcodec/png: remove obsolete comments Signed-off-by: Paul B Mahol <onemda@gmail.com>	11 years ago
Michael Niedermayer	60fed98e63	avcodec/pngdec: fix last_row_size type Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Michael Niedermayer	7b47d7f75e	avcodec/pngdec: Fix padded alloc code with threads Fixes Ticket2903 Fixes out of array write no releases should be affected by this Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	11 years ago
Paul B Mahol	2a75459519	pngdec: do not release buffer on failure instead report full progress Should fix heap-use-after-free as reported by Address Sanitizer. Signed-off-by: Paul B Mahol <onemda@gmail.com>	11 years ago
Paul B Mahol	dd1d29bd5f	pngdec: use av_fast_padded_malloc(z) Signed-off-by: Paul B Mahol <onemda@gmail.com>	11 years ago
Paul B Mahol	6e643239d9	pngdec: frame multithreading support Signed-off-by: Paul B Mahol <onemda@gmail.com>	11 years ago
Stefano Sabatini	0a3589bf2f	lavc/pngdec: return meaningful error codes	12 years ago
Michael Niedermayer	3b58ab4c5f	pngdec: dont treat mpng like png with key and non keyframes Fixes Ticket2618 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>	12 years ago
Diego Biurrun	2832ea26f3	Remove commented-out debug #define cruft	12 years ago
Clément Bœsch	1ec94b0f06	lavc: factorize ff_{thread_,re,}get_buffer error messages. Coccinelle profile used: @@ expression r, ctx, f, loglevel, str, flags; @@ -if ((r = ff_get_buffer(ctx, f, flags)) < 0) { - av_log(ctx, loglevel, str); - return r; -} +if ((r = ff_get_buffer(ctx, f, flags)) < 0) + return r; @@ expression r, ctx, f, loglevel, str; @@ -if ((r = ff_reget_buffer(ctx, f)) < 0) { - av_log(ctx, loglevel, str); - return r; -} +if ((r = ff_reget_buffer(ctx, f)) < 0) + return r; @@ expression r, ctx, f, loglevel, str, flags; @@ -if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) { - av_log(ctx, loglevel, str); - return r; -} +if ((r = ff_thread_get_buffer(ctx, f, flags)) < 0) + return r; ...along with some manual patches for the remaining ones.	12 years ago

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164 Commits (6f838dee3cf86bf8b7196ef25bcce1cb4736a0c4)