| Schroedinger Reference Manual | ||||
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SchroUnpack;
void schro_unpack_byte_sync (SchroUnpack *unpack);
void schro_unpack_copy (SchroUnpack *dest,
SchroUnpack *src);
unsigned int schro_unpack_decode_bit (SchroUnpack *unpack);
unsigned int schro_unpack_decode_bits (SchroUnpack *unpack,
int n);
int schro_unpack_decode_sint (SchroUnpack *unpack);
void schro_unpack_decode_sint_s16 (int16_t *dest,
SchroUnpack *unpack,
int n);
int schro_unpack_decode_sint_slow (SchroUnpack *unpack);
unsigned int schro_unpack_decode_uint (SchroUnpack *unpack);
int schro_unpack_get_bits_read (SchroUnpack *unpack);
int schro_unpack_get_bits_remaining (SchroUnpack *unpack);
void schro_unpack_init_with_data (SchroUnpack *unpack,
uint8_t *data,
int n_bytes,
unsigned int guard_bit);
void schro_unpack_limit_bits_remaining (SchroUnpack *unpack,
int n_bits);
void schro_unpack_skip_bits (SchroUnpack *unpack,
int n_bits);
typedef struct {
/* pointer to data that haven't been shifted into the shift register */
uint8_t *data;
/* number of bits remaining that haven't been shifted into the shift
* register */
int n_bits_left;
/* number of bits read by reader */
int n_bits_read;
/* chunk of bits we're currently frobbing, aligned to (1<<31) */
uint32_t shift_register;
int n_bits_in_shift_register;
/* bit pattern used after an error */
unsigned int guard_bit;
/* unpacking has overrun the end of the buffer */
int overrun;
} SchroUnpack;
unsigned int schro_unpack_decode_bit (SchroUnpack *unpack);
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unsigned int schro_unpack_decode_bits (SchroUnpack *unpack, int n);
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void schro_unpack_decode_sint_s16 (int16_t *dest, SchroUnpack *unpack, int n);
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int schro_unpack_decode_sint_slow (SchroUnpack *unpack);
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unsigned int schro_unpack_decode_uint (SchroUnpack *unpack);
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int schro_unpack_get_bits_read (SchroUnpack *unpack);
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int schro_unpack_get_bits_remaining (SchroUnpack *unpack);
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void schro_unpack_init_with_data (SchroUnpack *unpack, uint8_t *data, int n_bytes, unsigned int guard_bit);
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void schro_unpack_limit_bits_remaining (SchroUnpack *unpack, int n_bits);
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void schro_unpack_skip_bits (SchroUnpack *unpack, int n_bits);
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