wm4 45df7adc1d imgutils: add function to clear an image to black ...

Black isn't always just memset(ptr, 0, size). Limited YUV in particular
requires relatively non-obvious values, and filling a frame with
repeating 0 bytes is disallowed in some contexts. With component sizes
larger than 8 or packed YUV, this can become relatively complicated. So
having a generic function for this seems helpful.

In order to handle the complex cases in a generic way without destroying
performance, this code attempts to compute a black pixel, and then uses
that value to clear the image data quickly by using a function like
memset.

Common cases like yuv410p10 or rgba can't be handled with a simple
memset, so there is some code to fill memory with 2/4/8 byte patterns.
For the remaining cases, a generic slow fallback is used.

Signed-off-by: Anton Khirnov <anton@khirnov.net>

2017-07-26 23:21:26 +02:00

..

aarch64

aarch64: Add parentheses around the offset parameter in movrel

2017-02-16 09:56:11 +02:00

arm

arm: Check for the .arch directive in configure

2017-05-08 14:21:08 +03:00

avr32

cosmetics: Fix spelling mistakes

2016-05-04 18:16:21 +02:00

bfin

…

mips

mips: intreadwrite: Only execute that code for mips r1 or r2

2015-09-29 11:10:37 +02:00

ppc

ppc: Drop support for Apple GCC

2017-06-13 12:34:35 +02:00

sh4

…

tests

Convert all AVClass struct declarations to designated initializers.

2017-06-12 11:01:10 +02:00

tomi

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x86

x86util: Port all macros to cpuflags

2017-03-14 17:23:32 +01:00

.gitignore

Split global .gitignore file into per-directory files

2016-05-13 14:55:56 +02:00

adler32.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

adler32.h

…

aes.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

aes.h

lavu: Drop deprecated context size variables

2015-08-28 16:04:27 +02:00

attributes.h

libavutil: Hook up the rest of the gcc specific attributes to clang as well

2017-03-22 14:25:45 +02:00

audio_fifo.c

audio_fifo: Drop write-only variable

2016-10-27 12:21:46 +02:00

audio_fifo.h

…

avassert.h

cosmetics: Fix spelling mistakes

2016-05-04 18:16:21 +02:00

avstring.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

avstring.h

avutil/avstring: Inline some tiny functions

2015-10-03 13:45:37 +02:00

avutil.h

lavu: Add a video section to Doxygen documentation

2016-12-07 14:26:21 -05:00

base64.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

base64.h

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blowfish.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

blowfish.h

blowfish: add av_blowfish_alloc()

2015-07-31 09:04:09 +02:00

bswap.h

…

buffer_internal.h

buffer: convert to stdatomic

2016-10-02 18:58:04 +02:00

buffer.c

buffer: convert to stdatomic

2016-10-02 18:58:04 +02:00

buffer.h

buffer: fix av_buffer_pool_init2() documentation

2016-08-11 10:29:23 +02:00

channel_layout.c

channel_layout: Add a 16channel default layout

2015-08-23 21:44:38 +02:00

channel_layout.h

channel_layout: Add a 16channel default layout

2015-08-23 21:44:38 +02:00

colorspace.h

colorspace: Add support for BT709

2016-05-10 11:30:25 +02:00

common.h

libavutil: add av_mod_uintp2

2017-03-01 11:23:19 -05:00

cpu_internal.h

x86: Add helper macros to check for slow cpuflags

2015-05-31 12:07:11 +02:00

cpu.c

cpu: add a function for querying maximum required data alignment

2017-02-11 11:37:45 +01:00

cpu.h

cpu: add a function for querying maximum required data alignment

2017-02-11 11:37:45 +01:00

crc.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

crc.h

…

des.c

tests: Move all test programs to a subdirectory

2016-05-13 14:55:56 +02:00

des.h

des: Add missing include

2015-08-31 17:06:32 +02:00

dict.c

dict: Change return type of av_dict_copy()

2015-10-12 13:35:01 +02:00

dict.h

cosmetics: Fix spelling mistakes

2016-05-04 18:16:21 +02:00

display.c

mov: Write the display matrix in order

2015-03-23 20:53:28 +00:00

display.h

lavu: Add a video section to Doxygen documentation

2016-12-07 14:26:21 -05:00

downmix_info.c

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downmix_info.h

…

error.c

…

error.h

…

eval.c

Convert all AVClass struct declarations to designated initializers.

2017-06-12 11:01:10 +02:00

eval.h

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fifo.c

fifo: Return the correct AVERROR value

2017-01-26 10:25:20 +01:00

fifo.h

…

file_open.c

Share the utf8 to wchar conversion routine between lavf and lavu

2014-11-27 09:29:17 +02:00

file.c

Convert all AVClass struct declarations to designated initializers.

2017-06-12 11:01:10 +02:00

file.h

…

float_dsp.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

float_dsp.h

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frame.c

lavc, lavu: move frame cropping to a convenience function

2017-07-26 23:20:40 +02:00

frame.h

lavc, lavu: move frame cropping to a convenience function

2017-07-26 23:20:40 +02:00

hmac.c

hmac: Explicitly convert types at function pointer assignment

2017-01-09 15:18:16 +01:00

hmac.h

hmac: add support for SHA-2

2015-07-29 22:09:16 +03:00

hwcontext_cuda.c

hwcontext_cuda: implement frames_get_constraints

2017-02-01 10:43:00 +01:00

hwcontext_cuda.h

hwcontext: add a CUDA implementation

2016-02-14 22:08:33 +01:00

hwcontext_d3d11va.c

d3d11va: Check WINAPI_FAMILY instead of HAVE_LOADLIBRARY

2017-07-05 13:55:11 +03:00

hwcontext_d3d11va.h

hwcontext_d3d11va: add option to enable debug mode

2017-06-27 00:23:12 +02:00

hwcontext_dxva2.c

avutil/hwcontext_dxva2: Don't improperly free IDirect3DSurface9 objects

2017-05-20 09:41:45 +02:00

hwcontext_dxva2.h

dxva: add support for new dxva2 and d3d11 hwaccel APIs

2017-06-08 21:20:18 +02:00

hwcontext_internal.h

lavu: add new D3D11 pixfmt and hwcontext

2017-06-08 20:55:36 +02:00

hwcontext_qsv.c

hwcontext_qsv: Implement mapping frames to the child device type

2017-04-30 17:33:18 +01:00

hwcontext_qsv.h

hwcontext: add a QSV implementation

2016-06-21 19:53:37 +02:00

hwcontext_vaapi.c

vaapi: Add ABGR map only if VA_FOURCC_ABGR is defined

2017-05-29 13:50:03 +02:00

hwcontext_vaapi.h

hwcontext_vaapi: Try to support the VDPAU wrapper

2017-02-13 21:44:47 +00:00

hwcontext_vdpau.c

hwcontext_vdpau: Fix missing subscripts

2016-09-14 20:48:36 +01:00

hwcontext_vdpau.h

hwcontext: add a VDPAU implementation

2016-02-14 22:06:04 +01:00

hwcontext.c

hwcontext: Mark local table static const

2017-06-15 00:02:06 +01:00

hwcontext.h

lavu: add new D3D11 pixfmt and hwcontext

2017-06-08 20:55:36 +02:00

imgutils_internal.h

imgutils: add a function for copying image data from GPU mapped memory

2016-08-31 08:15:47 +02:00

imgutils.c

imgutils: add function to clear an image to black

2017-07-26 23:21:26 +02:00

imgutils.h

imgutils: add function to clear an image to black

2017-07-26 23:21:26 +02:00

internal.h

libavutil: Make LOCAL_ALIGNED(xx be equal to LOCAL_ALIGNED_xx(

2017-03-31 22:06:52 +03:00

intfloat.h

…

intmath.c

…

intmath.h

intmath: add faster clz support

2017-03-01 11:23:19 -05:00

intreadwrite.h

Revert "libavutil: Use an intermediate variable in AV_COPY*U"

2016-08-02 21:18:18 +03:00

lfg.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

lfg.h

…

libavutil.v

build: Change structure of the linker version script templates

2016-05-29 16:43:11 +02:00

libm.h

…

lls.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

lls.h

libavutil: move FFALIGN macro from common.h to macros.h

2015-12-14 16:16:55 +01:00

log2_tab.c

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log.c

log: Print a full backtrace along with error messages under Valgrind

2015-04-20 19:20:57 +01:00

log.h

lavu: Drop deprecated av_dlog macro

2017-03-23 10:09:17 +01:00

lzo.c

…

lzo.h

…

macros.h

libavutil: move FFALIGN macro from common.h to macros.h

2015-12-14 16:16:55 +01:00

Makefile

lavu: add new D3D11 pixfmt and hwcontext

2017-06-08 20:55:36 +02:00

mathematics.c

mathematics: Kill non-compiling disabled cruft

2016-08-17 12:16:42 +02:00

mathematics.h

…

md5.c

avutil/md5: fix misaligned reads

2017-06-02 21:00:35 -04:00

md5.h

crypto: consistently use size_t as type for length parameters

2017-01-09 15:17:43 +01:00

mem.c

mem: uninline av_malloc(z)_array()

2017-04-26 09:05:28 +02:00

mem.h

mem: uninline av_malloc(z)_array()

2017-04-26 09:05:28 +02:00

opt.c

Drop unreachable break and return statements

2016-11-03 20:17:12 +01:00

opt.h

lavu: Drop deprecated option type

2017-03-23 10:09:17 +01:00

parseutils.c

Mark some arrays that never change as const.

2017-02-01 10:42:59 +01:00

parseutils.h

parseutils: Make av_small_strptime public

2015-04-07 12:36:11 +02:00

pixdesc.c

lavu: add new D3D11 pixfmt and hwcontext

2017-06-08 20:55:36 +02:00

pixdesc.h

pixdesc: Use AV_CEIL_RSHIFT in documentation

2016-01-25 12:02:20 -05:00

pixfmt.h

lavu: add new D3D11 pixfmt and hwcontext

2017-06-08 20:55:36 +02:00

random_seed.c

cosmetics: Fix spelling mistakes

2016-05-04 18:16:21 +02:00

random_seed.h

…

rational.c

…

rational.h

…

rc4.c

rc4: add av_rc4_alloc()

2015-07-31 09:04:12 +02:00

rc4.h

rc4: extend av_rc4_init() doxy

2015-07-31 09:04:12 +02:00

replaygain.h

cosmetics: Drop empty comment lines

2016-02-18 15:35:30 +01:00

samplefmt.c

…

samplefmt.h

cosmetics: Drop empty comment lines

2016-02-18 15:35:30 +01:00

sha.c

crypto: consistently use size_t as type for length parameters

2017-01-09 15:17:43 +01:00

sha.h

crypto: consistently use size_t as type for length parameters

2017-01-09 15:17:43 +01:00

spherical.c

spherical: add functions to retrieve and request projection names

2017-04-27 09:59:54 -04:00

spherical.h

spherical: add functions to retrieve and request projection names

2017-04-27 09:59:54 -04:00

stereo3d.c

Mark some arrays that never change as const.

2017-02-01 10:42:59 +01:00

stereo3d.h

lavu: Add a video section to Doxygen documentation

2016-12-07 14:26:21 -05:00

thread.h

thread: Define ff_mutex_* macros as stub functions when threads are disabled

2017-04-12 10:07:09 +02:00

time_internal.h

lavu: Provide fallbacks for gmtime_r and localtime_r

2014-10-26 00:14:54 +03:00

time.c

lavu: Add av_gettime_relative

2014-10-24 09:53:41 +03:00

time.h

lavu: Add av_gettime_relative

2014-10-24 09:53:41 +03:00

timer.h

arm64: add cycle counter support

2015-12-14 16:42:35 +01:00

tree.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

tree.h

lavu: Drop deprecated context size variables

2015-08-28 16:04:27 +02:00

utils.c

lavu: add an API function to return the Libav version string

2015-07-02 23:22:53 +02:00

version.h

imgutils: add function to clear an image to black

2017-07-26 23:21:26 +02:00

wchar_filename.h

Share the utf8 to wchar conversion routine between lavf and lavu

2014-11-27 09:29:17 +02:00

xtea.c

build: Split test programs off into separate files

2016-04-07 16:14:42 +02:00

xtea.h

xtea: Add functions for little endian mode

2015-11-13 21:53:54 +02:00