diff options
Diffstat (limited to 'src/utils/types.h')
| -rw-r--r-- | src/utils/types.h | 29 |
1 files changed, 13 insertions, 16 deletions
diff --git a/src/utils/types.h b/src/utils/types.h index 0dd6360..c2daf1f 100644 --- a/src/utils/types.h +++ b/src/utils/types.h @@ -390,12 +390,13 @@ struct FilmGrainParams { uint8_t point_v_value[10]; uint8_t point_v_scaling[10]; - uint8_t chroma_scaling; // [8, 11]. - uint8_t auto_regression_coeff_lag; // [0, 3]. - int8_t auto_regression_coeff_y[24]; // [-128, 127] - int8_t auto_regression_coeff_u[25]; // [-128, 127] - int8_t auto_regression_coeff_v[25]; // [-128, 127] - // Shift value: auto regression coeffs range + uint8_t chroma_scaling; // grain_scaling_minus_8 + 8: [8, 11]. + uint8_t auto_regression_coeff_lag; // ar_coeff_lag: [0, 3]. + // ar_coeffs_{y,u,v}_plus_128 - 128: [-128, 127]. + int8_t auto_regression_coeff_y[24]; + int8_t auto_regression_coeff_u[25]; + int8_t auto_regression_coeff_v[25]; + // Shift value: ar_coeff_shift_minus_6 + 6, auto regression coeffs range: // 6: [-2, 2) // 7: [-1, 1) // 8: [-0.5, 0.5) @@ -405,16 +406,12 @@ struct FilmGrainParams { uint16_t grain_seed; int reference_index; int grain_scale_shift; - // These multipliers are encoded as nonnegative values by adding 128 first. - // The 128 is subtracted during parsing. - int8_t u_multiplier; // [-128, 127] - int8_t u_luma_multiplier; // [-128, 127] - // These offsets are encoded as nonnegative values by adding 256 first. The - // 256 is subtracted during parsing. - int16_t u_offset; // [-256, 255] - int8_t v_multiplier; // [-128, 127] - int8_t v_luma_multiplier; // [-128, 127] - int16_t v_offset; // [-256, 255] + int8_t u_multiplier; // cb_mult - 128: [-128, 127]. + int8_t u_luma_multiplier; // cb_luma_mult - 128: [-128, 127]. + int16_t u_offset; // cb_offset - 256: [-256, 255]. + int8_t v_multiplier; // cr_mult - 128: [-128, 127]. + int8_t v_luma_multiplier; // cr_luma_mult - 128: [-128, 127]. + int16_t v_offset; // cr_offset - 256: [-256, 255]. }; struct ObuFrameHeader { |