diff options
Diffstat (limited to 'src/libac3/ac3.h')
| -rw-r--r-- | src/libac3/ac3.h | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/src/libac3/ac3.h b/src/libac3/ac3.h index 305a10e49..03b849357 100644 --- a/src/libac3/ac3.h +++ b/src/libac3/ac3.h @@ -22,24 +22,28 @@ * */ +typedef float sample_t; + typedef struct ac3_ba_s { - uint16_t fsnroffst; // fine SNR offset - uint16_t fgaincod; // fast gain - uint16_t deltbae; // delta bit allocation exists - int8_t deltba[50]; // per-band delta bit allocation + uint16_t fsnroffst; // fine SNR offset + uint16_t fgaincod; // fast gain + uint16_t deltbae; // delta bit allocation exists + int8_t deltba[50]; // per-band delta bit allocation } ac3_ba_t; typedef struct ac3_state_s { + sample_t * delay; // delay samples for imdct + uint8_t fscod; // sample rate uint8_t halfrate; // halfrate factor uint8_t acmod; // coded channels - float clev; // centre channel mix level - float slev; // surround channels mix level + sample_t clev; // centre channel mix level + sample_t slev; // surround channels mix level uint8_t lfeon; // coded lfe channel int output; // type of output - float level; // output level - float bias; // output bias + sample_t level; // output level + sample_t bias; // output bias uint16_t cplinu; // coupling in use uint16_t chincpl[5]; // channel coupled @@ -47,7 +51,7 @@ typedef struct ac3_state_s { uint16_t cplbndstrc[18]; // coupling band structure uint16_t cplstrtmant; // coupling channel start mantissa uint16_t cplendmant; // coupling channel end mantissa - float cplco[5][18]; // coupling coordinates + sample_t cplco[5][18]; // coupling coordinates // derived information uint16_t cplstrtbnd; // coupling start band (for bit allocation) @@ -101,5 +105,5 @@ void ac3_init (void); int ac3_syncinfo (uint8_t * buf, int * flags, int * sample_rate, int * bit_rate); int ac3_frame (ac3_state_t * state, uint8_t * buf, int * flags, - float * level, float bias); -int ac3_block (ac3_state_t * state); + sample_t * level, sample_t bias, sample_t * delay); +int ac3_block (ac3_state_t * state, sample_t samples[][256]); |