Harish Mahendrakar
816221d81e
libhevcdec: Reset PPS scratch buffer and extension flags before parsing
...
When parsing PPS in ihevcd_parse_pps(), the scratch buffer
ps_codec->s_parse.ps_pps_base + MAX_PPS_CNT - 1 was not reset to zero,
unlike ihevcd_parse_sps(). In streams with concatenated sequences where
an earlier sequence set pps_extension_present_flag and range extension
flags, subsequent sequences without PPS extensions would retain the stale
flags. This caused the parser to attempt reading non-existent range
extension syntax, leading to bitstream parsing failure.
- In ihevcd_parse_pps(), reset the scratch PPS structure to zero upon
entry while preserving pi2_scaling_mat and ps_tile pointers.
- In both ihevcd_parse_pps() and ihevcd_parse_sps(), explicitly zero all
extension flags when pps_extension_present_flag / sps_extension_present_flag
is 0.
Test: ./hevc_dec_tests
TAG=agy
CONV=476d1054-10ff-4f19-88d5-a1c8dae7b57f
(cherry picked from commit 4bf5819c62
2026-09-17 12:25:17 -07:00
Harish Mahendrakar
1713ca27ea
decoder: Fix race condition and invalid CTB coordinates in slice headers
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In ihevcd_copy_slice_hdr(), copying the previous slice header for dependent
slices copied i2_ctb_x and i2_ctb_y. If parsing was aborted or delayed,
the incomplete slice header retained the previous slice's coordinates,
causing concurrent worker threads in ihevcd_slice_hdr_update() to prematurely
switch to the invalid slice header. Reset i2_ctb_x and i2_ctb_y to -1
after copying.
In ihevcd_parse_slice_header(), initialize i2_ctb_x and i2_ctb_y to -1
immediately following memset so that slices rejected prior to coordinate
parsing do not retain valid-looking (0, 0) coordinates.
In ihevcd_parse_pic_init(), only skip reinitializing slice header 1 if
the first slice was missing in the current picture.
Test: ./hevc_dec_tests
Test: ./hevc_dec_fuzzer /work/misc/oss-fuzz/build/out/libhevc/crash-b74b07ae377d7450614e4534c86155d1d2999e13
TAG=agy
CONV=cfdfe257-7362-41c9-b5be-18261f1c6a3d
2026-09-16 10:56:47 +05:30
StevenShen3641
b21f809576
Fix out-of-bounds read when an SEI payload exceeds the NAL
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ihevcd_parse_sei() truncated the declared SEI payload size to the bytes
remaining with MIN() instead of rejecting it. The payload parsers do not
consult that size, so ihevcd_parse_mastering_disp_params_sei() read its
full 24-byte structure out of a one-byte payload and ran past the end of
the bitstream buffer.
2026-09-03 22:44:32 -07:00
Harish Mahendrakar
d42200d2f2
decoder: Fix OOB read in ihevcd_parse_sei_payload when no SPS is valid
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When parsing SEI payloads before any valid SPS has been decoded,
ihevcd_parse_sei_payload scanned ps_codec->ps_sps_base using a loop
that could step past the array bounds and dereference an invalid pointer.
Initialize ps_sps to NULL, check each entry's validity within bounds,
and return safely if no valid SPS is present.
2026-09-02 12:58:11 +05:30
Rakesh Kumar
e3ce7e69cb
hevcdec: Remove rext generic function pointer override for 422/444
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With SIMD optimizations updated and enabled for 422 and 444 chroma formats,
the fallback override in ihevcd_init_function_ptr_rext_generic is no longer
necessary.
Test: ./build
2026-08-17 16:29:15 +00:00
Vivek R Jadhav
6f423a375a
libhevcdec: Enable architecture-specific SIMD optimizations for 422 and 444
...
Previously, when 422 or 444 chroma formats were encountered, all
function pointers were overridden to generic C implementations due to
lack of support in optimized assemblies/intrinsics for certain
components.
This change introduces `ihevcd_init_function_ptr_rext` which:
- First initializes all function pointers with architecture-optimized
versions.
- Explicitly overrides only the components not yet optimized for 422/444 formats (intra prediction, SAO, deblocking and chroma padding) to point
back to their C implementations.
This allows other fully-compatible modules (e.g: inter prediction modes, transform/reconstruction, format conversion) to benefit from SIMD
optimizations on 422/444 formats without degrading YUV 420 decoding.
Test: ./hevcdec
Change-Id: I013e44e024258f2f84690fdc0109200129042145
2026-08-03 13:29:07 +00:00
Harish Mahendrakar
86c57003fe
Add required typecasts to fix warnings
2026-06-20 16:59:17 -07:00
Vivek R Jadhav
e7d529d271
hevcdec: add support for chroma qp offset list
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Test: ./hevcdec
Change-Id: I40411c04ab00d7e23843eb1d033c4943e3ec86e8
2026-06-18 06:42:01 -07:00
Harish Mahendrakar
0d2132c3ac
Revert "Revert "libhevcdec: allow YUV422 format for decoding""
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This reverts commit 97c1736f2d
2026-06-11 22:48:24 -07:00
Ram Mohan M
57d79be23a
updates to odd dimensions support - 2
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- reduce unused memory allocations
- revert unrequired alignments done to widths and height in format
conversion leaf functions
- pass correct strides and base address to leaf functions
fixes oss-fuzz-520748344
Change-Id: I8b783d1dae8c53b68a6d3a32dbc3ffb16376851e
2026-06-07 16:06:11 -07:00
Harish Mahendrakar
97c1736f2d
Revert "libhevcdec: allow YUV422 format for decoding"
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This reverts commit a4a80bc48e
2026-05-27 07:59:18 -07:00
Vivek R Jadhav
a4a80bc48e
libhevcdec: allow YUV422 format for decoding
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Test: ./hevcdec
Change-Id: I40411c04ab00d7e23843eb1d033c4543e4ec63e9
2026-05-21 08:23:13 -07:00
Vivek R Jadhav
f990e295bd
hevcdec: add support for frext profile
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Test: ./hevcdec
Change-Id: I013e44e024258f2f84690fdc0109200109012026
2026-05-13 07:23:03 -07:00
Vivek R Jadhav
944771fb1b
libhevcdec: disable simd optimizations during 422/444 decoding.
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Test: ./hevcdec
Change-Id: I40411c04ab00d7e23843eb1d033c4943e4ec86e5
2026-05-07 07:00:35 -07:00
Ram Mohan M
a960c019e0
hevcdec: add support for persistent rice adaptation flag
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Test: ./hevcdec
Change-Id: I835753e513b757330a4905ac29340422fc8d1590
2026-03-16 10:03:26 -07:00
Ram Mohan M
e0aec79c0d
hevcdec: add support for explicit rdpcm
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Test: ./hevcdec
Change-Id: I89365bb544c3a9dc6ffc25f86f3cbf568dd2ecf4
2026-03-06 14:33:49 -08:00
Ram Mohan M
e8624b5c8f
hevcdec: add support for implicit rdpcm
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Test: ./hevcdec
Change-Id: I703bdc92aaef2fed615fe1650249e6248768ddce
2026-03-06 14:33:49 -08:00
Ram Mohan M
38e622bf6a
hevcdec: update lib for chroma format idc 422
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- updated parser for 422 specific syntax elements
- updated iqitrecon module to handle 422 subtu's. Verified functionality
for intra only slices
- add support 422 i/o
- restrict combinations of output chroma format and internal chroma
format allowed. That is, for a given chroma format idc not all output
color formats are supported. The output format can now be either same
as internal color format or 420p.
Test: ./hevcdec
Change-Id: I9dbf5c141aceb8ffcbe063aa35856eeed11e3d4f
2026-03-04 15:39:55 -08:00
Ram Mohan M
87962d6818
hevcdec: add support for cross component prediction
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Test: ./hevcdec
Change-Id: I84b76bdd7a8f0611be42fbe08bb0dca46bc40df7
2026-03-04 12:32:03 -08:00
Ram Mohan M
90f29517ee
hevcdec: add support for transform_skip_rotation_enabled_flag
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Test: ./hevcdec
Change-Id: Icc083c3bf08b23a6b91c230aace3aae148cb3ec9
2026-03-04 12:32:03 -08:00
Sushant
ab4dd06386
hevcdec: add support for scaling lists
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Test: ./hevcdec
2026-02-27 08:33:45 -08:00
Ram Mohan M
e563dd60af
hevcdec: add support for transform_skip_context_enabled_flag
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Change-Id: I6655bb256d5de456a210b54d8b38a06c5ddeaee1
2026-02-23 10:59:08 -08:00
Ram Mohan M
934d05f42b
hevcdec: add support for log2 max transform skip size
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Change-Id: If72ce05af2c67dc1fbd81766cebcadfcb132983d
2026-02-23 10:59:08 -08:00
Rakesh Kumar
29611400fa
hevcdec: add support for internal color format 444
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Change-Id: I013e44e024258f2f84690fdcc01b4cd52f0fbd18
2026-02-23 10:59:08 -08:00
Ram Mohan M
546576fa3d
hevcdec: fix incorrect error checks added in sps/pps parsing
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range extension profile toolsets were guarded based on chroma format
information instead of profile. This is fixed.
Test: ./hevcdec -c test.cfg
Change-Id: I484b07f367d46a60112d3ef7c4a431bf72047e6e
2026-02-20 11:12:39 -08:00
Ram Mohan M
4e7799d665
hevcdec: fix incorrect sampling factor used for 422
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for 422 chroma format, the horizontal and vertical subsampling factors
chosen are incorrect. This is fixed.
Test: Build
Change-Id: Ie82c029da6e86225f202a366c41af447b7d76ab2
2026-02-20 10:28:18 -08:00
Ram Mohan M
09bc53ec53
hevcdec: fix white spacing and other cosmetic changes
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Test: Build
2026-02-11 12:14:51 -08:00
Rakesh Kumar
789320b76c
hevcdec: add support for parsing "extension present" fields of sps and pps
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Added support for parsing "extension present" fileds for sps and pps
for yuv color format 444.
Test: ./hevcdec
Change-Id: I42bc18ede7d75350784c7fc2546045019cd8171d
2026-02-10 07:14:13 -08:00
Vivek Jadhav
e38e75d666
hevcdec: add support for parsing "extension present" fields of sps and pps for monochrome
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Bug:
Test: ./hevcdec
Change-Id: I944c539000f26898d5985cd6806f2968d4865f61
2026-02-09 13:02:30 -08:00
Vivek Jadhav
45340a66f0
libhevcdec: Add support for monochrome
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Bug: 382315082
Test: ./hevcdec
Change-Id: I944c539000f26898d5985cd5809f2958d4865f71
2025-11-11 07:11:03 -08:00
Srujan Vandrangi
dc225332d0
libhevc: move SEI related code under a macro
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Bug: 338446610
Test: ./hevcdec
2024-05-07 10:07:49 -07:00
Haripriya Deshmukh
d0897deaf8
libhevc: Add dynamic color aspects support
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Bug: 325468696
Test: atest android.mediav2.cts.DecoderDynamicColorAspectTest
Change-Id: I01dc043dfdae5646818c3cbea8ae0415183eb69d
2024-04-22 23:50:43 -07:00
Srujan Vandrangi
3c03b2bcf7
decoder: add check for luma height while parsing sps
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Bug: oss-fuzz:60439
Test: ./hevc_dec_fuzzer
2023-10-25 06:56:55 -07:00
Shivaansh Agrawal
f6dcd29208
Decoder: add support for QP and block_type map export in library
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Bug: 176469524
Test: hevcdec -c test.cfg
Test: atest -c android.mediav2.cts.CodecDecoderTest
Test: atest VtsHalMediaC2V1_0TargetVideoDecTest
Change-Id: I75aebd3c4121d3b8cb5a2a947f643abbff41810d
2022-08-04 11:40:43 +05:30
Neelkamal Semwal
1c2342b48e
decoder: Fix integer overflow in ihevcd_parse_pred_wt_ofst
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Bug: 228326749
Test: poc in bug
Test: atest CtsMediaTestCases:VideoDecoderTest
Test: atest CtsMediaV2TestCases:CodecDecoderTest
Test: atest VtsHalMediaC2V1_0TargetVideoDecTest
Change-Id: Ifd63a964bc66c615d151877abbf06c1eeef0fc63
2022-05-19 12:01:00 +05:30
Harish Mahendrakar
70940fbabd
Check change in CTB size when decoding multiple SPS with same id
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If an SPS is being overwritten, ensure CTB size remains same.
If not, return from decoder and reset the decoder state in the
subsequent decode call.
Bug: 140322595
Test: poc in bug
Change-Id: I5f1e52d3bd2b48874a088ab32054f5a89e62eeb5
2019-09-19 21:17:50 -07:00
Harish Mahendrakar
9fcd94f316
decoder: Fix valid SPS check in parsing SEI am: 61646846b3 am: 7f5da9039c am: e4237f852d
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am: 824c19e4ca
2019-06-20 21:20:00 -07:00
Harish Mahendrakar
61646846b3
decoder: Fix valid SPS check in parsing SEI
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When parsing SEI, ensure there is at least one valid SPS.
Test: poc in bug
Bug: 134420911
Change-Id: If3aa142b7fac324f8416e647572dfb002f56e06d
2019-06-07 16:23:17 -07:00
Android Build Merger (Role)
8fb024bad3
[automerger] Add few more checks for invalid parameters in sps am: 2f30da4ca2 am: 59c1e4d23e am: 7dbf2eeb7f am: 4fd075fd4d am: e10f3d3c6d
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Change-Id: I44b6ea6f4a0af681be55c893cb9241ef5e90ec4c
2019-05-07 20:47:48 +00:00
Android Build Merger (Role)
59c1e4d23e
[automerger] Add few more checks for invalid parameters in sps am: 2f30da4ca2
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Change-Id: I78d8b0b2a9e804f3af8fd090876fbd2750d1edf9
2019-05-07 20:47:43 +00:00
Harish Mahendrakar
2f30da4ca2
Add few more checks for invalid parameters in sps
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Following elements didn't have a bound check in SPS as spec doesn't list
the bounds on these explicitly.
log2_min_coding_block_size_minus3, log2_diff_max_min_coding_block_size,
log2_min_transform_block_size_minus2 and log2_diff_max_min_transform_block_size
Added appopriate error checks on these fields
Bug: 129366952
Bug: 130023983
Test: vendor
Merged-In: I59d95f43c2ef98300132d664095e88df8e87a164
Change-Id: I59d95f43c2ef98300132d664095e88df8e87a164
2019-05-07 20:47:42 +00:00
Harish Mahendrakar
3d5a29afff
Merge changes from topic "am-5b50c796-9c7d-4769-bc6c-f71bdac7c742" into oc-dev am: dce2f1a1a1 am: 7dd0807cdf am: cfebb9ec7d
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am: 6b80fa9f71
2019-05-06 19:11:23 -07:00
Harish Mahendrakar
c34a29b7b5
[automerger] Add missing return check for short_term_ref_pic_set() am: 299cceb9e4 am: 2e8ae23656 am: 7ecb4083b9 am: 4fe71a567e am: 1561dc0fa9 am: 2b9fa38bb8 am: 6e96227190 am: cd5ac287ce
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am: 0cdffda83f
2019-05-06 17:27:22 -07:00
TreeHugger Robot
dce2f1a1a1
Merge changes from topic "am-5b50c796-9c7d-4769-bc6c-f71bdac7c742" into oc-dev
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* changes:
[automerger] Add bounds check for tile dimensions am: 05f83e94588ee7982e467c6da2165bc11699b0f4c0d441f4a705f83e94588ee7982e467c6da2165bc11699b0f405f83e94588ee7982e467c6da2165b05f83e94588ee7982e4605f83e9458
2019-05-07 00:16:35 +00:00
TreeHugger Robot
d683d78752
Merge changes from topic "am-5b50c796-9c7d-4769-bc6c-f71bdac7c742" into nyc-dr1-dev
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* changes:
[automerger] Add bounds check for tile dimensions am: 05f83e9458
2019-05-07 00:16:35 +00:00
Harish Mahendrakar
8925a5b7fb
Add few more checks for invalid parameters in sps
...
Following elements didn't have a bound check in SPS as spec doesn't list
the bounds on these explicitly.
log2_min_coding_block_size_minus3, log2_diff_max_min_coding_block_size,
log2_min_transform_block_size_minus2 and log2_diff_max_min_transform_block_size
Added appopriate error checks on these fields
Bug: 129366952
Bug: 130023983
Test: vendor
Change-Id: I59d95f43c2ef98300132d664095e88df8e87a164
2019-04-30 14:11:10 -07:00
Android Build Merger (Role)
2b9fa38bb8
[automerger] Add missing return check for short_term_ref_pic_set() am: 299cceb9e4 am: 2e8ae23656 am: 7ecb4083b9 am: 4fe71a567e am: 1561dc0fa9
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Change-Id: I378a6e4f6f70931f36fd74acb02846096679e367
2019-04-23 22:29:03 +00:00
Android Build Merger (Role)
2e8ae23656
[automerger] Add missing return check for short_term_ref_pic_set() am: 299cceb9e4
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Change-Id: I9c4d960ac4e58f57b637908524918558ae539ca4
2019-04-23 22:28:54 +00:00
Harish Mahendrakar
299cceb9e4
Add missing return check for short_term_ref_pic_set()
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Bug: 129401104
Bug: 130025324
Test: vendor
Change-Id: I685dd29ec13cca0ced5de8eb3aea1d0da5952a62
2019-04-23 15:28:03 -07:00
Android Build Merger (Role)
adb9a9521f
[automerger] Add bounds check for tile dimensions am: 05f83e9458 am: 8ee7982e46 am: 7c6da2165b am: c11699b0f4 am: c0d441f4a7
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Change-Id: Id59eb1cae3db497e3b7d04abd207ff69819a2331
2019-04-23 22:07:43 +00:00
