Michael Niedermayer 10f2abc41f swscale: support sliced input with cascaded scaling contexts ...

Previously scale_cascaded() assumed the whole source frame arrived in a
single sws_scale() call, and the dispatcher only routed full-frame calls
to it. A partial input slice fell through to ff_swscale() on the parent
dispatcher context, whose scaler state (c->desc) is never initialized in
cascade mode, causing a NULL dereference / crash.

Top-down sliced output is bit-exact with full-frame scaling; bottom-up
matches swscale's pre-existing (non-cascade) slice behaviour for
subsampled intermediate formats.

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

2026-06-13 21:32:37 +00:00

..

aarch64

swscale/ops: generalize SwsReadWriteOp.packed to enum

2026-06-11 16:27:47 +00:00

arm

libswscale/arm: Switch consistent indentation to common style

2026-04-29 13:49:27 +03:00

loongarch

swscale/loongarch: fix LASX YUV2RGB residual for multi-row slices

2026-03-02 13:14:07 +00:00

ppc

swscale/swscale_internal: Move altivec parts to ppc/

2026-02-28 09:56:01 +01:00

riscv

swscale/range_convert: saturate output instead of limiting input

2024-12-05 21:10:29 +01:00

tests

swscale/tests/sws_ops: fix uops leak on translate success path

2026-06-10 07:48:37 +00:00

vulkan

hwcontext_vulkan: fix BGRA/BGR0 images

2026-06-12 10:14:33 +09:00

x86

swscale/x86/ops: fix CPU flags checks

2026-06-13 08:26:19 +00:00

alphablend.c

swscale/alphablend: don't overread alpha plane on subsampled odd size

2025-07-31 11:32:20 +00:00

bayer_template.c

swscale/internal: constify SwsFunc

2024-10-07 19:51:34 +02:00

cms.c

swscale: replace fall-through comments

2026-04-28 12:29:37 +00:00

cms.h

swscale/utils: split off format code into new file

2025-03-14 19:50:44 +01:00

csputils.c

swscale/csputils: Remove unused ff_sws_matrix3x3_rmul()

2025-04-03 06:04:57 +02:00

csputils.h

swscale/csputils: Remove unused ff_sws_matrix3x3_rmul()

2025-04-03 06:04:57 +02:00

filters.c

swscale/filters: hard-code radius for trivial kernels

2026-05-11 19:59:39 +02:00

filters.h

swscale/filters: write new filter LUT generation code

2026-03-28 18:50:13 +01:00

format.c

swscale/ops: generalize SwsReadWriteOp.packed to enum

2026-06-11 16:27:47 +00:00

format.h

swscale/format: generalize ff_test_fmt() to take SwsBackend

2026-06-03 21:39:55 +00:00

framepool.c

swscale: add FFFramePool and use it for allocating planes

2026-04-10 15:12:18 +02:00

gamma.c

swscale: rename SwsContext to SwsInternal

2024-10-24 22:50:00 +02:00

graph.c

swscale/graph: prefer ops backend for floating point formats

2026-06-05 22:37:18 +02:00

graph.h

swscale/graph: add metadata about backends in use

2026-06-03 21:39:55 +00:00

half2float.c

swscale/input: add rgbaf16 input support

2022-08-19 22:09:36 +02:00

hscale_fast_bilinear.c

swscale: rename SwsContext to SwsInternal

2024-10-24 22:50:00 +02:00

hscale.c

swscale/range_convert: fix mpeg ranges in yuv range conversion for non-8-bit pixel formats

2024-12-05 21:10:29 +01:00

input.c

swscale/input: fix rgbf32 input (add half input functions)

2026-06-05 22:33:58 +02:00

libswscale.v

…

log2_tab.c

…

lut3d.c

swscale/lut3d: remove unused function

2025-07-22 19:56:34 +02:00

lut3d.h

swscale/utils: split off format code into new file

2025-03-14 19:50:44 +01:00

Makefile

swscale/ops_backend: delete ops-based C backend

2026-06-09 18:27:20 +02:00

ops_chain.c

swscale/ops_dispatch: generalize over_read/over_read to array

2026-06-11 16:27:47 +00:00

ops_chain.h

swscale/ops_dispatch: generalize over_read/over_read to array

2026-06-11 16:27:47 +00:00

ops_dispatch.c

swscale/ops: generalize SwsReadWriteOp.packed to enum

2026-06-11 16:27:47 +00:00

ops_dispatch.h

swscale/ops_dispatch: generalize block_size_in/out to array

2026-06-11 16:27:47 +00:00

ops_internal.h

swscale/ops: move ff_sws_compile_pass() and friends to ops_dispatch.h

2026-05-15 18:53:05 +02:00

ops_memcpy.c

swscale/ops_memcpy: simplify plane count check

2026-06-11 16:27:47 +00:00

ops_optimizer.c

swscale/ops: generalize SwsReadWriteOp.packed to enum

2026-06-11 16:27:47 +00:00

ops.c

swscale/ops: generalize SwsReadWriteOp.packed to enum

2026-06-11 16:27:47 +00:00

ops.h

swscale/ops: generalize SwsReadWriteOp.packed to enum

2026-06-11 16:27:47 +00:00

options.c

swscale: add new SwsContext.backends option

2026-06-03 21:39:55 +00:00

output.c

swscale/output: avoid signed overflow in yuv2rgba64_1 alpha

2026-06-05 01:15:22 +00:00

rgb2rgb_template.c

swscale/rgb2rgb_template: use unsigned for <<24

2026-06-05 01:14:02 +00:00

rgb2rgb.c

swscale/rgb2rgb: Remove set-but-unused functions

2026-03-01 23:45:11 +00:00

rgb2rgb.h

swscale/rgb2rgb: Remove set-but-unused functions

2026-03-01 23:45:11 +00:00

slice.c

swscale/slice: fix init of 32 bpc planes

2024-12-16 12:21:55 +01:00

swscale_internal.h

swscale: add new SwsContext.backends option

2026-06-03 21:39:55 +00:00

swscale_unscaled.c

swscale/swscale_unscaled: disable unscaled copy from yaf32be to grayf32be

2026-06-05 22:33:37 +02:00

swscale.c

swscale: support sliced input with cascaded scaling contexts

2026-06-13 21:32:37 +00:00

swscale.h

swscale/graph: only prefer unstable backends with SWS_UNSTABLE

2026-06-03 21:39:55 +00:00

swscaleres.rc

…

uops_backend.c

swscale/ops_dispatch: generalize over_read/over_read to array

2026-06-11 16:27:47 +00:00

uops_macros.h

swscale/uops: add SWS_UOP_MOVE for optimal register-register swizzles

2026-06-09 18:27:20 +02:00

uops_tmpl.c

swscale/uops: parametrize filter op result type

2026-06-09 18:27:20 +02:00

uops_tmpl.h

swscale/uops_tmpl: move attributes before static keyword

2026-06-10 16:27:58 +02:00

uops.c

swscale/uops: add default fallback for translate_op()

2026-06-11 16:27:47 +00:00

uops.h

swscale/uops: add SWS_UOP_MOVE for optimal register-register swizzles

2026-06-09 18:27:20 +02:00

utils.c

swscale/utils: improve check for float formats that will be converted to uint16_t

2026-06-05 22:31:09 +02:00

version_major.h

libs: bump major version for all libraries

2025-03-28 14:44:34 -03:00

version.c

lib*/version: Use static_assert for static asserts

2024-03-31 00:08:42 +01:00

version.h

swscale: add new SwsContext.backends option

2026-06-03 21:39:55 +00:00

vscale.c

swscale/internal: group user-facing options together

2024-11-21 12:49:56 +01:00

yuv2rgb.c

swscale/yuv2rgb: add explicit BE/LE 565/555 cases

2026-06-10 17:54:20 +00:00