581 commits

Author	SHA1	Message	Date
Rakesh Kumar	efa8b27448	hevcdec: Enable assembly and intrinsic intra prediction functions for 444 and 422 chroma formats ... Remove generic C overrides for chroma and luma intra prediction in ihevcd_init_function_ptr_rext_generic to allow architecture-specific assembly and SIMD intrinsics to be used during 422 and 444 decoding.	2026-08-12 03:37:56 +00:00
Vivek R Jadhav	d61070bafe	libhevc: Update intrinsic for implicit RDPCM ... Test: ./hevcdec Change-Id: I013e44e024258f2f84690fdc0109200109042035	2026-08-05 14:37:42 +00:00
Vivek Jadhav	ce30a4b0e3	libhevcdec: Reapply deblocking assembly changes for YUV444 and YUV422 ... Test: ./hevcdec TODO: Add assemblies and intrinsics for deblocking 422 Change-Id: I40411c04ab00d7e23843eb1d033c4944e3ec66e9	2026-08-04 06:04:10 +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
Vivek Jadhav	a4cb498b8b	libhevcdec: Fix conformance issues for transform skip and implicit RDPCM ... - disable_boundary_filter flag was not reset within the TU loop. This caused the flag to remain sticky at 1 for all subsequent TUs in the CTB once set by any TU. - Transform-skip blocks larger than 4x4, the scaling/dequantization matrix is bypassed and the scaling factor is set to a constant of 16 as per HEVC specification section 8.6.3. - Bypassing the inverse transform for transform-skip blocks requires applying a scaling of tsShift (Rec. ITU-T H.265 Section 8.6.2 Eq 8-296: tsShift = 5 + log2_trans_size) and descaling of bdShift (Eq 8-295: bdShift = 20 - bit_depth). Net shift: shift_ts = bdShift - tsShift (20 - bit_depth) - (5 + log2_trans_size) 15 - bit_depth - log2_trans_size. Test: ./hevcdec Change-Id: I40411c04ab00d7e23842eb1d033c4543e4ec75e9	2026-07-30 09:36:12 -07:00
Harish Mahendrakar	b8c9100658	Remove incorrect prefix from ihevcd_itrans_res_dc ... ihevcd_itrans_res_dc is defined in common folder but has a wrong prefix of ihevcd_. This is now fixed to ihevc_.	2026-07-29 17:08:35 -07:00
Harish Mahendrakar	8dffbdd2d0	Move IVD_ARCH_T and IVD_SOC_T to iv.h and rename as IV_ARCH_T and IV_SOC_T ... This helps in decoupling unit tests in common from depending on ivd.h	2026-07-29 15:37:52 -07:00
Sabith Saheb	41d029542e	fix oob top-left pu-map read in ihevcd_get_mv_ctb	2026-07-14 07:25:34 -07:00
Sabith Saheb	1cef4c170f	fix oob slice-index read in ihevcd_sao_shift_ctb	2026-07-14 07:25:11 -07:00
Harish Mahendrakar	085f030e9e	Invoke ihevcd_free_dynamic_bufs() in ihevcd_allocate_dynamic_bufs() ... This will ensure that any memory that is allocated before and not yet freed, will be freed. This is done as a precaution to ensure there are no leaks.	2026-07-13 00:08:29 -07:00
Sabith Saheb	c605590236	use unsigned word type in ihevcd_bits_seek to avoid signed shift ub	2026-07-06 21:28:17 -07:00
Ram Mohan M	bc802ee605	hevcdec: update chroma subsample filter from neighbor to area ... For clips with chroma format idc 444/422 and output format selected to 420, after decoding during chroma sampling conversion from 444/422 to 420, neighbor filtering is done currently. This is updated to area. Test: ./hevcdec Change-Id: I024886655084051093858c5c40a94c0373c64813	2026-07-02 10:09:50 -07:00
Sushant	d629b12768	hevcdec: fix statcoeff placement for persistent rice adaptation ... According to the ITU Specs (9.3.3.11) the statCoeff for persistent rice adaptation must only be updated when the parsing of coeff_abs_level_remaining is actually triggered. Earlier, the i1_update_stats was incorrectly placed outside, resulting stateCoeff getting incorrectly updated for the first coefficient of every sub-block, and corrupting it. Test: ./hevcdec Change-Id: I7535ced74c18f55a7aff31d1c6d6d68f4a28f2cd	2026-06-24 22:51:07 -07:00
SABITHSAHEB	8260aefeb9	fix oob chroma source read in ihevcd_fmt_conv_422sp_to_420p	2026-06-23 09:21:08 +05:30
Harish Mahendrakar	a3336a27f4	Include ihevcd_defs.h and ihevcd_structs.h in risc function selector	2026-06-22 20:01:44 -07:00
Harish Mahendrakar	86c57003fe	Add required typecasts to fix warnings	2026-06-20 16:59:17 -07:00
SABITHSAHEB	5ad6b71310	hevcdec: avoid signed left shift overflow building coeff bitmasks	2026-06-20 10:34:06 -07:00
Sushant	646ee99888	libhevc: Direct memcpy and memset calls to enable _FORTIFY_SOURCE ... Bypass wrappers functions for memcpy and memset, calling standard C library functions directly. This allows _FORTIFY_SOURCE to perform compile-time safety checks. Bug: 514722372 Test: ./hevcdec Change-Id: Id9faf0919ecedfd1833d40a7fbf6ddac454628b4	2026-06-18 06:44:56 -07:00
Vivek R Jadhav	e7d529d271	hevcdec: add support for chroma qp offset list ... Test: ./hevcdec Change-Id: I40411c04ab00d7e23843eb1d033c4943e3ec86e8	2026-06-18 06:42:01 -07:00
Vivek R Jadhav	a0296d9951	libhevcdec: Fix number of TU's allocated for YUV422 ... Fixed num of TU and subTU allocated for YUV422 Test: ./hevcdec Change-Id: I40411c04ab00d7e23843ea1d033c4943e4ec66e5	2026-06-16 22:04:47 -07:00
Harish Mahendrakar	0d2132c3ac	Revert "Revert "libhevcdec: allow YUV422 format for decoding"" ... This reverts commit 97c1736f2d.	2026-06-11 22:48:24 -07:00
Vivek R Jadhav	df5c27d45d	libhevcdec: Add SAO boundary checks ... For 16x16 CTB sizes in chroma processing, au4_idx_tl[5] and au4_idx_tl[6] can be set to -1 at picture boundaries. Added guards to check that the index is valid (> idx_tl) before dereferencing the slice header list. Bug: 516422427 Test: ./hevc_dec_fuzzer Change-Id: I40411c04ab00d7e23843eb1d033c6953e3ec76e9	2026-06-11 22:33:05 -07:00
Vivek R Jadhav	091042fa3e	libhevcdec: Update static allocation for SAO context ... Corrected the static SAO buffer size calculation to match the partitioned buffer bounds. Luma requires 4x and Chroma requires 8x MAX_CTB_SIZE * MAX_CTB_SIZE, which is now correctly summed to allocate 12x MAX_CTB_SIZE * MAX_CTB_SIZE bytes per process thread. Bug: 484436016 Test: ./hevc_dec_fuzzer Change-Id: I40411c04ab00d7e23843eb1d033d4943e3ec76a9	2026-06-11 21:46:30 -07:00
Ram Mohan M	57d79be23a	updates to odd dimensions support - 2 ... - 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	1fac8cc5fe	Updates to odd dimension support. ... Reverted some of the unnecessary changes from commit: f6ef16b0f9 - Restored the format conversion structure prior to f6ef16b0f9 - No need to handle odd stride for 420 and 422 output. - Dimensions for output format 444 and 400 format can be odd Tested with few YUV444 and YUV400 odd dimension clips To generate: $ ffmpeg -f lavfi -i testsrc=s=511x511 -c:v libx265 -pix_fmt yuv444p -t 1 -tag:v hvc1 y444_511x511.hevc $ ffmpeg -f lavfi -i testsrc=s=511x511 -c:v libx265 -pix_fmt gray -t 1 -tag:v hvc1 y400_511x511.hevc To decode using hevcdec for YUV420 output format $ hevcdec -i y444_511x511.hevc -o y444_511x511.yuv --save_output 1 --num_frames -1 --chroma_format YUV_420P --enable_yuv_format 31 $ hevcdec -i y400_511x511.hevc -o y400_511x511.yuv --save_output 1 --num_frames -1 --chroma_format YUV_420P --enable_yuv_format 31 To decode using hevcdec for YUV444 output format $ hevcdec -i y444_511x511.hevc -o y444_511x511.yuv --save_output 1 --num_frames -1 --chroma_format YUV_444P --enable_yuv_format 31 To decode using hevcdec for YUV400 output format $ hevcdec -i y400_511x511.hevc -o y400_511x511.yuv --save_output 1 --num_frames -1 --chroma_format GRAY --enable_yuv_format 31 Display resulting output using ffplay by passing `-f rawvideo -pixel_format yuv420p -video_size 511x511` Change pixel_format to yuv420p/yuv444p/gray based on decoder chroma_format argument	2026-06-05 11:42:40 -07:00
Vivek R Jadhav	f6ef16b0f9	libhevcdec: Add support for odd dimensions ... Decoding streams with odd resolutions previously caused integer truncation during right-shift or division operations, leading to incorrect buffer size and stride calculations. This is fixed by applying the ALIGN2 macro to width and height across buffer metrics, dimension queries, and outargs to safely pad boundaries. Test: ./hevcdec Change-Id: I5c432aa63b0975b76baa5e59a816278087b65215	2026-06-05 10:53:38 -07:00
Vivek R Jadhav	1f0d11ce8f	libhevcdec: update chroma deblocking masks and BS shifts for YUV422/YUV444 ... Apply 0xAAAAAAAA mask for vertical chroma deblocking on YUV422 and YUV444. Apply 0xAAAAAAAA mask for horizontal chroma deblocking on YUV444. Add array indexing shifts for YUV422/YUV444 when log2_ctb_size != 6. Test: ./hevcdec Change-Id: I40411c04ab00d7e23843eb1d033c5943e3ec75e9	2026-06-03 09:40:02 -07:00
Harish Mahendrakar	97c1736f2d	Revert "libhevcdec: allow YUV422 format for decoding" ... This reverts commit a4a80bc48e.	2026-05-27 07:59:18 -07:00
Harish Mahendrakar	a2a98baa6e	refactor: clean up SAO and ILF padding code ... - Deleted ihevcd_sao_ctb implementation and declaration. - Removed code under #else of SAO_PROCESS_SHIFT_CTB in ihevcd_process_slice.c. - Removed code under #if FRAME_ILF_PAD and simplified checks assuming FRAME_ILF_PAD is 0. - Deleted ihevcd_ilf_padding.c and removed it from Android.bp and libhevcdec.cmake. - Removed SAO_PROCESS_SHIFT_CTB definition in ihevcd_defs.h. - Removed FRAME_ILF_PAD definition in ihevcd_defs.h. TAG=agy CONV=ceba65ba-1766-4f4d-84f0-f7c3804a90fe	2026-05-24 10:11:19 -07:00
Harish Mahendrakar	cdd7c565e0	Fix OOB access in ihevcd_fmt_conv_422sp_to_420p ... The function was processing all rows of chroma, while 420p only requires half the rows. This caused an OOB write when writing to the destination buffer. Fixed by skipping every other row of source chroma. TAG=agy Bug: ossfuzz:515832483 CONV=731dcda4-96d6-4402-b14c-f727e9983c85	2026-05-23 21:15:32 -07:00
Vivek R Jadhav	a4a80bc48e	libhevcdec: allow YUV422 format for decoding ... Test: ./hevcdec Change-Id: I40411c04ab00d7e23843eb1d033c4543e4ec63e9	2026-05-21 08:23:13 -07:00
Vivek R Jadhav	2f827d5db0	libhevcdec: Update deblock modules for yuv422 format ... Test: ./hevcdec Change-Id: I40411c04ab00d7e23843eb1d033c4543e3ec66e9	2026-05-21 08:22:42 -07:00
Vivek R Jadhav	f990e295bd	hevcdec: add support for frext profile ... Test: ./hevcdec Change-Id: I013e44e024258f2f84690fdc0109200109012026	2026-05-13 07:23:03 -07:00
Vivek R Jadhav	70ee4f3d29	libhevcdec: add support for deblock filter for yuv 444 format ... Test: ./hevcdec Change-Id: I013e44e024258f2f84690fdcc01b4cd56f0fbd19	2026-05-13 07:22:18 -07:00
Vivek R Jadhav	b6ad1290f0	hevcdec: update sao modules for chroma format idc 444 ... Test: ./hevcdec Change-Id: I013e44e024258f2f84690fdcc01b4cd52f0fbd16	2026-05-08 08:16:51 -07:00
Vivek R Jadhav	944771fb1b	libhevcdec: disable simd optimizations during 422/444 decoding. ... Test: ./hevcdec Change-Id: I40411c04ab00d7e23843eb1d033c4943e4ec86e5	2026-05-07 07:00:35 -07:00
Vivek R Jadhav	98462a6e46	libhevcdec: Unify ihevcd_function_selector_generic.c and ihevcd_function_selector_noneon.c ... Test: ./hevcdec Change-Id: I40411c04ab00d7e23843eb1d033c4943e3ec56e5	2026-05-07 07:00:35 -07:00
Vivek R Jadhav	37e4bc2135	libhevcdec: Add inter pred support for yuv422 format ... Bug: Test: ./hevcdec Change-Id: I40411c04ab00d7e23843eb1d033c4945e3ec66e9	2026-05-06 10:30:26 -07:00
Rakesh Kumar	5da3d44aef	libhevc: added BTI and PAC support in libhevc ... Test: readelf -nw libhevcdec.a Test: readelf -nW libhevcenc.a Test: atest MctsMediaV2TestCases atest MctsMediaDecoderTestCases atest MctsMediaEncoderTestCases atest MctsMediaCodecTestCases Test: hevc_dec_fuzzer hevc_enc_fuzzer Bug: 485868924 Change-Id: I7eb3c915662654d649ba4aa5793f71afff8c47e7	2026-04-02 08:34:07 -07:00
Ram Mohan M	a960c019e0	hevcdec: add support for persistent rice adaptation flag ... Test: ./hevcdec Change-Id: I835753e513b757330a4905ac29340422fc8d1590	2026-03-16 10:03:26 -07:00
Ram Mohan M	e0aec79c0d	hevcdec: add support for explicit rdpcm ... Test: ./hevcdec Change-Id: I89365bb544c3a9dc6ffc25f86f3cbf568dd2ecf4	2026-03-06 14:33:49 -08:00
Ram Mohan M	e8624b5c8f	hevcdec: add support for implicit rdpcm ... Test: ./hevcdec Change-Id: I703bdc92aaef2fed615fe1650249e6248768ddce	2026-03-06 14:33:49 -08:00
Ram Mohan M	811fa89f0e	hevcdec: fix missing initialization of during subtu's processing ... Test: ./hevcdec Change-Id: I5ab746bb2ba28bee8ea2869112db63dec0363264	2026-03-06 14:32:33 -08:00
Ram Mohan M	38e622bf6a	hevcdec: update lib for chroma format idc 422 ... - 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	c8327aa960	hevcdec: remove unused memory allocations ... while computing chroma residue, the same buffer is used for both cb and cr. So remove allocation made for cr. Further guard the memory allocation for rext toolsets under the macro ENABLE_MAIN_REXT_PROFILE Test: ./hevcdec Change-Id: I773c9413d262a4b84bcc7ec71ac11ceaadfd839d	2026-03-04 14:11:33 -08:00
Ram Mohan M	87962d6818	hevcdec: add support for cross component prediction ... 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 ... Test: ./hevcdec Change-Id: Icc083c3bf08b23a6b91c230aace3aae148cb3ec9	2026-03-04 12:32:03 -08:00
Ram Mohan M	ad0a6d8688	hevcdec: add itrans residue functions ... These functions are similar to ihevc_itrans_recon_* with the exception that instead of computing recon directly they store residue to the destination buffer. This helps with additional transformation of the residue coefficients (rotation, rdpcm, ccp) before adding to the prediction data to generate the final recon. Test: Build Change-Id: I9f84e66f5e9595162335cb152a6329a0f8d23337	2026-03-04 12:32:03 -08:00
Harish Mahendrakar	aea272ecb6	expose inter pred filter coefficients ... In subsequent commits, the unit tests will use these filter coefficients instead of defining a copy.	2026-02-28 22:40:12 +05:30
Harish Mahendrakar	2cf1cc917d	decoder: Change function pointer argument to avoid passing codec_t	2026-02-28 22:39:33 +05:30