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318 Commits

Author SHA1 Message Date
Derek Buitenhuis a4bd4733c0 swscale: Allow the max filter size to be set at compile time 
This can help "extreme" resizes, e.g with some 4k stuff.

Signed-off-by: Derek Buitenhuis <derek.buitenhuis@gmail.com>
 2014-06-13 14:49:59 +01:00
Michael Niedermayer ce4d91ba2a sws: document color range >8bit oddity 2014-05-21 21:29:33 +02:00
Michael Niedermayer c3417ed7fd swscale/utils: Add check that ensures that the hardcoded struct offsets are valid 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-05-14 01:32:11 +02:00
Michael Niedermayer 656fe7ecce swscale/utils: use FF_ALLOC(Z)_ARRAY_OR_GOTO() and av_malloc(z)_array() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-05-04 19:49:06 +02:00
Michael Niedermayer 1c4110be90 Merge commit '3a177a9cca924e097265b32f9282814f6b653e08' 
* commit '3a177a9cca924e097265b32f9282814f6b653e08':
  swscale: Fix an undefined behaviour

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-05-03 23:36:54 +02:00
Luca Barbato 3a177a9cca swscale: Fix an undefined behaviour 
Prevent a division by zero down the codepath.

Sample-Id: 00001721-google
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
 2014-05-03 18:25:17 +02:00
Michael Niedermayer 4959a4fcf7 swscale/utils: fix changing src/dst range after initializing the context 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-15 00:40:39 +02:00
Michael Niedermayer fa98885be4 swscale/utils: move handling of unscaled case to the end of init function 
This way all context fields get initialized and can be used without needing to reinit the context

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-14 23:32:41 +02:00
Michael Niedermayer ed962414bd Merge commit '92b099daf4b8ef93513e38b43899cb8458a2fde3' 
* commit '92b099daf4b8ef93513e38b43899cb8458a2fde3':
  swscale: support converting YVYU422 pixel format

Conflicts:
	libswscale/input.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-09 03:36:38 +02:00
Michael Niedermayer 1752b1459d swscale/utils: scale filter_size in warning so that it can be used as max for the compile time define 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-09 00:57:12 +02:00
Michael Niedermayer 7b2b06eb43 swscale/utils: dont print message about filter size when the cause is a malloc failure 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-09 00:57:12 +02:00
Vittorio Giovara 92b099daf4 swscale: support converting YVYU422 pixel format 2014-04-07 23:50:34 +02:00
Michael Niedermayer 37f69cd93e swscale: add full bgra64 support 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-02 19:44:08 +02:00
Michael Niedermayer 3428a9b8d5 Merge commit '0ca0924c10d9617a5793964bf79655424ef32b68' 
* commit '0ca0924c10d9617a5793964bf79655424ef32b68':
  swscale: add endianness conversion for AV_PIX_FMT_BGRA64|RGBA64

Conflicts:
	libswscale/swscale_unscaled.c
	libswscale/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2014-04-02 17:46:19 +02:00
Janne Grunau 0ca0924c10 swscale: add endianness conversion for AV_PIX_FMT_BGRA64|RGBA64 2014-04-02 11:39:26 +02:00
Carl Eugen Hoyos e6fe804bdd Do not set swscale sizeFactor to -1. 
Fixes ticket #3495.
 2014-03-25 15:46:35 +01:00
Øyvind Kolås 3e6016622e swscale: add two spatially stable dithering methods 
Both of these dithering methods are from http://pippin.gimp.org/a_dither/ for
GIF they can be considered better than bayer (provides more gray-levels), and
spatial stability - often more than twice as good compression and less visual
flicker than error diffusion methods (the methods also avoids error-shadow
artifacts of diffusion dithers).

These methods are similar to blue/green noise type dither masks; but are
simple enough to generate their mask on the fly. They are still research work
in progress; though more expensive to generate masks (which can be used in a
LUT) like 'void and cluster' and similar methods will yield superior results
 2014-03-25 13:48:06 +01:00
Carl Eugen Hoyos 37c07d4529 swscale/utils: Fix color range of gray16 
Improves rgb -> gray16 conversion

Fixes Ticket3422

The pam and png output files look visually similar, in both cases the
dynamics increase to 0x0 -> 0xfffb.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-03-18 22:15:15 +01:00
Jean First 1481d24c3a RGBA64 pixel formats 
Signed-off-by: Vittorio Giovara <vittorio.giovara@gmail.com>
 2014-03-16 23:05:47 +01:00
Peter Ross 02b63246cf libswscale: bayer to rgb24 & yv12 colorspace converters 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2014-02-23 02:38:22 +01:00
Michael Niedermayer 51fed95dde swscale/utils: fix wrong deprecated message with rgb0 
Fixes Ticket3242
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-12-24 22:47:49 +01:00
Michael Niedermayer 037fc3b054 swscale/utils: check chroma width for fast bilinear scaler 
Fixes artifacts where fast bilinear was used for downscaling chroma

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-12-15 14:13:55 +01:00
Michael Niedermayer 554e913fd7 swscale/utils: remove useless () 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-12-15 14:10:02 +01:00
Michael Niedermayer dc54bd4e8d swscale/utils: factor (d + 1 < 4) out 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-12-15 13:49:20 +01:00
Michael Niedermayer 4d18060e56 swscale/utils: fill xyz tables only when they will be used 
makes the first call to sws_getContext() 1ms faster

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-12-07 02:04:31 +01:00
Stefano Sabatini 2a6c95d85f lsws/utils: introduce scale_algorithms array 
Allow some dumb factorizations, slightly decrease spaghetti factor.
 2013-11-05 14:01:53 +01:00
Stefano Sabatini 246e323de8 lsws/utils: fix typo 2013-11-05 00:04:17 +01:00
Stefano Sabatini ff9d11f95d lsws: use av_pix_fmt_get_chroma_sub_sample() 
Remove duplicated getSubSampleFactors() function. Simplify.
 2013-10-24 08:12:38 +02:00
Michael Niedermayer eb4205cc89 swscale/utils: check mprotect() return code 
Found-by: wm4
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-10-23 10:14:05 +02:00
Michael Niedermayer 2db6547237 swscale/utils/sws_setColorspaceDetails(): fix indention 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-10-17 14:02:43 +02:00
Michael Niedermayer a830915b78 swscale: Use full resolution chroma for yuv2rgb when the input has full chroma 
See Ticket3028

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-10-10 17:28:59 +02:00
Michael Niedermayer 5710f55e49 Merge commit '6b3ff6f91a535d6383f41ca7bdf760165dcb6015' 
* commit '6b3ff6f91a535d6383f41ca7bdf760165dcb6015':
  swscale: provide a default scaler if none is set

Conflicts:
	libswscale/utils.c

The default is left at bicubic until someone has compared the scalers
properly speed and quality wise.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-10-06 11:44:05 +02:00
Vittorio Giovara 6b3ff6f91a swscale: provide a default scaler if none is set 
Lanczos for general case, sinc for upscaling, Gaussian for
downscaling. According to current literature these scalers
should be the best quality-wise algorithms for each case.

Inspired from a patch by wm4 <nfxjfg@googlemail.com>

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
 2013-10-05 18:38:55 +02:00
Michael Niedermayer 2e2a2d8801 swscale/utils: dont divide by zero with zero vectors 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-10-01 00:27:28 +02:00
Michael Niedermayer 2d28950da9 swscale/utils: remove redundant NULL checks before sws_freeVec() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-17 21:48:54 +02:00
Michael Niedermayer a446657d8c swscale/utils: simplify cpu caps printing code 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-17 21:31:58 +02:00
Michael Niedermayer 9d052adbeb swscale/utils: Simplify scaler name printing code 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-17 21:29:42 +02:00
Michael Niedermayer aec91de549 swscale/utils: Allow sws_setColorspaceDetails() to use the tables from sws_getColorspaceDetails() 
Previously this would have lead to a memcpy(a,a) which violates the
requirement of non overlapping src and dst.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-17 17:21:13 +02:00
Michael Niedermayer c914c99d4b swscale/utils: use memcpy instead of loop in sws_cloneVec() 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-09-08 16:39:38 +02:00
Michael Niedermayer f0a3562382 Merge commit '79aec43ce813a3e270743ca64fa3f31fa43df80b' 
* commit '79aec43ce813a3e270743ca64fa3f31fa43df80b':
  x86: Add and use more convenience macros to check CPU extension availability

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-30 11:57:35 +02:00
Michael Niedermayer 01cac26f68 Merge commit '1909f6b1b6da2db371c179bed5a19aaf979b7557' 
* commit '1909f6b1b6da2db371c179bed5a19aaf979b7557':
  swscale: cosmetics: Drop silly camelCase from swScale function pointer name

Conflicts:
	libswscale/swscale_unscaled.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-29 15:56:03 +02:00
Michael Niedermayer 5ff1b588eb Merge commit 'c2503d9c8ab42ea55922e9f5a10c8bfbbbfeaf19' 
* commit 'c2503d9c8ab42ea55922e9f5a10c8bfbbbfeaf19':
  swscale: ppc: Hide arch-specific initialization details

Conflicts:
	libswscale/utils.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-29 15:10:09 +02:00
Michael Niedermayer 29daad5b98 Merge commit 'f61bece684d9685b07895508e6c1c733b5564ccf' 
* commit 'f61bece684d9685b07895508e6c1c733b5564ccf':
  ppc: Add and use convenience macro to check for AltiVec availability

Conflicts:
	libavcodec/ppc/dsputil_ppc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-29 14:24:07 +02:00
Diego Biurrun 79aec43ce8 x86: Add and use more convenience macros to check CPU extension availability 2013-08-29 13:07:37 +02:00
Diego Biurrun 1909f6b1b6 swscale: cosmetics: Drop silly camelCase from swScale function pointer name 2013-08-29 10:23:54 +02:00
Diego Biurrun c2503d9c8a swscale: ppc: Hide arch-specific initialization details 
Also give consistent names to init functions.
 2013-08-29 10:23:41 +02:00
Diego Biurrun f61bece684 ppc: Add and use convenience macro to check for AltiVec availability 2013-08-28 23:54:15 +02:00
Michael Niedermayer 23b3141261 swscale: improve dither checks 
Bssed on patch by Øyvind Kolås <pippin@gimp.org>

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-19 18:33:50 +02:00
Michael Niedermayer 8c50ea2251 swscale: set dither to a specific value for rgb/bgr8 output 
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-19 18:31:35 +02:00
Michael Niedermayer c14fc4585c Merge commit 'aa2ba8c99e5708884a56aea9c1d96e014866f8a3' 
* commit 'aa2ba8c99e5708884a56aea9c1d96e014866f8a3':
  swscale: Move extern declarations for tables to swscale_internal.h

Conflicts:
	libswscale/output.c
	libswscale/swscale_internal.h
	libswscale/swscale_unscaled.c
	libswscale/utils.c
	libswscale/yuv2rgb.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
 2013-08-16 12:56:48 +02:00