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9886db71d3
Currently, libhevc maintains two separate implementations for inverse
transform residual functions: ihevc_itrans_res_* and ihevc_hbd_itrans_res_*.
Since both 8-bit and HBD inverse transform residual routines output signed
16-bit residuals (WORD16 *pi2_dst), the only algorithmic difference between
8-bit and HBD variants is the 2nd stage shift:
Stage 1 shift: IT_SHIFT_STAGE_1 = 7 (fixed across all bit depths)
Stage 2 shift: shift = 20 - bit_depth
- 8-bit: 20 - 8 = 12 (IT_SHIFT_STAGE_2)
- 10-bit: 20 - 10 = 10
This commit cleans up the entire itrans_res family (4x4_ttype1, 4x4, dc, 8x8,
16x16, 32x32) as follows:
1. common/ihevc_itrans_res.h & common/ihevc_itrans_res.c:
- Add 'UWORD8 bit_depth' parameter to ihevc_itrans_res_* function
signatures and typedefs.
- Replace hardcoded 'shift = IT_SHIFT_STAGE_2;' with 'shift = 20 - bit_depth;'.
- Remove obsolete ihevc_hbd_itrans_res_* prototypes and typedefs.
2. common/ihevc_hbd_itrans_res.c:
- Delete file (~2,335 redundant lines removed).
3. Update tests/common/ihevc_itrans_res_test.cc to test bit depths 8 and 10
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| .. | ||
| common | ||
| decoder | ||
| encoder | ||
| Android.bp | ||
| AndroidTest.xml | ||
| DynamicConfig.xml | ||