diff options
Diffstat (limited to 'decoder/drc_src/impd_drc_tables.c')
| -rw-r--r-- | decoder/drc_src/impd_drc_tables.c | 142 |
1 files changed, 62 insertions, 80 deletions
diff --git a/decoder/drc_src/impd_drc_tables.c b/decoder/drc_src/impd_drc_tables.c index 849c300..b099b5e 100644 --- a/decoder/drc_src/impd_drc_tables.c +++ b/decoder/drc_src/impd_drc_tables.c @@ -28,93 +28,75 @@ #include "impd_drc_rom.h" WORD32 impd_init_tbls(const WORD32 num_gain_max_values, - ia_tables_struct* str_tables) -{ - impd_gen_delta_time_code_tbl (num_gain_max_values, - str_tables->delta_time_code_table); - return(0); + ia_tables_struct* str_tables) { + impd_gen_delta_time_code_tbl(num_gain_max_values, + str_tables->delta_time_code_table); + return (0); } -void impd_get_slope_code_tbl_and_size(ia_slope_code_table_struct const** slope_code_tbl_entry, - WORD32* num_slope_code_tbl_entries) -{ - *slope_code_tbl_entry = &(slopeCodeTableEntryBySize[0]); - *num_slope_code_tbl_entries = kNumSlopeValuesTable; +void impd_get_slope_code_tbl_and_size( + ia_slope_code_table_struct const** slope_code_tbl_entry, + WORD32* num_slope_code_tbl_entries) { + *slope_code_tbl_entry = &(slopeCodeTableEntryBySize[0]); + *num_slope_code_tbl_entries = kNumSlopeValuesTable; } - -void -impd_get_delta_gain_code_tbl(const WORD32 gain_coding_profile, - ia_delta_gain_code_table_struct const** delta_time_code_tbl, - WORD32 *num_entries) -{ - if (gain_coding_profile==GAIN_CODING_PROFILE_CLIPPING) - { - *delta_time_code_tbl = deltaGainCodeTableProfile2BySize; - *num_entries = kNumDeltaGainValuesTableProfile2; - } - else - { - *delta_time_code_tbl = deltaGainCodeTableBySize; - *num_entries = kNumDeltaGainValuesTable; - } +void impd_get_delta_gain_code_tbl( + const WORD32 gain_coding_profile, + ia_delta_gain_code_table_struct const** delta_time_code_tbl, + WORD32* num_entries) { + if (gain_coding_profile == GAIN_CODING_PROFILE_CLIPPING) { + *delta_time_code_tbl = deltaGainCodeTableProfile2BySize; + *num_entries = kNumDeltaGainValuesTableProfile2; + } else { + *delta_time_code_tbl = deltaGainCodeTableBySize; + *num_entries = kNumDeltaGainValuesTable; + } } -void -impd_gen_delta_time_code_tbl (const WORD32 num_gain_max_values, - ia_delta_time_code_table_entry_struct* delta_time_code_tbl_item) -{ - WORD32 n, k; - - WORD32 Z = 1; - while((1<<Z)<2*num_gain_max_values) - { - Z++; - } - - delta_time_code_tbl_item[0].size = -1; - delta_time_code_tbl_item[0].code = -1; - delta_time_code_tbl_item[0].value = -1; - - delta_time_code_tbl_item[1].size = 2; - delta_time_code_tbl_item[1].code = 0x0; - delta_time_code_tbl_item[1].value = 1; - for (n=0; n<4; n++) - { - delta_time_code_tbl_item[n+2].size = 4; - delta_time_code_tbl_item[n+2].code = 0x4 + n; - delta_time_code_tbl_item[n+2].value = n+2; - } - for (n=0; n<8; n++) - { - delta_time_code_tbl_item[n+6].size = 5; - delta_time_code_tbl_item[n+6].code = 0x10 + n; - delta_time_code_tbl_item[n+6].value = n+6; - } - - k = 2*num_gain_max_values-14+1; - for (n=0; n<k; n++) - { - delta_time_code_tbl_item[n+14].size = 2+Z; - delta_time_code_tbl_item[n+14].code = (0x3<<Z) + n; - delta_time_code_tbl_item[n+14].value = n+14; - } - +void impd_gen_delta_time_code_tbl( + const WORD32 num_gain_max_values, + ia_delta_time_code_table_entry_struct* delta_time_code_tbl_item) { + WORD32 n, k; + + WORD32 Z = 1; + while ((1 << Z) < 2 * num_gain_max_values) { + Z++; + } + + delta_time_code_tbl_item[0].size = -1; + delta_time_code_tbl_item[0].code = -1; + delta_time_code_tbl_item[0].value = -1; + + delta_time_code_tbl_item[1].size = 2; + delta_time_code_tbl_item[1].code = 0x0; + delta_time_code_tbl_item[1].value = 1; + for (n = 0; n < 4; n++) { + delta_time_code_tbl_item[n + 2].size = 4; + delta_time_code_tbl_item[n + 2].code = 0x4 + n; + delta_time_code_tbl_item[n + 2].value = n + 2; + } + for (n = 0; n < 8; n++) { + delta_time_code_tbl_item[n + 6].size = 5; + delta_time_code_tbl_item[n + 6].code = 0x10 + n; + delta_time_code_tbl_item[n + 6].value = n + 6; + } + + k = 2 * num_gain_max_values - 14 + 1; + for (n = 0; n < k; n++) { + delta_time_code_tbl_item[n + 14].size = 2 + Z; + delta_time_code_tbl_item[n + 14].code = (0x3 << Z) + n; + delta_time_code_tbl_item[n + 14].value = n + 14; + } } WORD32 -impd_get_delta_tmin (const WORD32 sampling_rate) -{ - WORD32 lowerBound = (WORD32) (0.5f + 0.0005f * sampling_rate); - WORD32 result = 1; - if (sampling_rate < 1000) - { - return(UNEXPECTED_ERROR); - } - while (result <= lowerBound) result = result << 1; - return result; +impd_get_delta_tmin(const WORD32 sampling_rate) { + WORD32 lowerBound = (WORD32)(0.5f + 0.0005f * sampling_rate); + WORD32 result = 1; + if (sampling_rate < 1000) { + return (UNEXPECTED_ERROR); + } + while (result <= lowerBound) result = result << 1; + return result; } - - - - |