Libav 0.7.1
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Functions | |
static void | ac3_exponent_min_c (uint8_t *exp, int num_reuse_blocks, int nb_coefs) |
static int | ac3_max_msb_abs_int16_c (const int16_t *src, int len) |
static void | ac3_lshift_int16_c (int16_t *src, unsigned int len, unsigned int shift) |
static void | ac3_rshift_int32_c (int32_t *src, unsigned int len, unsigned int shift) |
static void | float_to_fixed24_c (int32_t *dst, const float *src, unsigned int len) |
static void | ac3_bit_alloc_calc_bap_c (int16_t *mask, int16_t *psd, int start, int end, int snr_offset, int floor, const uint8_t *bap_tab, uint8_t *bap) |
static void | ac3_update_bap_counts_c (uint16_t mant_cnt[16], uint8_t *bap, int len) |
static int | ac3_compute_mantissa_size_c (uint16_t mant_cnt[6][16]) |
static void | ac3_extract_exponents_c (uint8_t *exp, int32_t *coef, int nb_coefs) |
av_cold void | ff_ac3dsp_init (AC3DSPContext *c, int bit_exact) |
Variables | |
const uint16_t | ff_ac3_bap_bits [16] |
Number of mantissa bits written for each bap value. |
static void ac3_bit_alloc_calc_bap_c | ( | int16_t * | mask, |
int16_t * | psd, | ||
int | start, | ||
int | end, | ||
int | snr_offset, | ||
int | floor, | ||
const uint8_t * | bap_tab, | ||
uint8_t * | bap | ||
) | [static] |
Definition at line 106 of file ac3dsp.c.
Referenced by ff_ac3dsp_init().
static int ac3_compute_mantissa_size_c | ( | uint16_t | mant_cnt[6][16] | ) | [static] |
Definition at line 144 of file ac3dsp.c.
Referenced by ff_ac3dsp_init().
static void ac3_exponent_min_c | ( | uint8_t * | exp, |
int | num_reuse_blocks, | ||
int | nb_coefs | ||
) | [static] |
Definition at line 27 of file ac3dsp.c.
Referenced by ff_ac3dsp_init().
static void ac3_extract_exponents_c | ( | uint8_t * | exp, |
int32_t * | coef, | ||
int | nb_coefs | ||
) | [static] |
Definition at line 164 of file ac3dsp.c.
Referenced by ff_ac3dsp_init().
static void ac3_lshift_int16_c | ( | int16_t * | src, |
unsigned int | len, | ||
unsigned int | shift | ||
) | [static] |
Definition at line 55 of file ac3dsp.c.
Referenced by ff_ac3dsp_init().
static int ac3_max_msb_abs_int16_c | ( | const int16_t * | src, |
int | len | ||
) | [static] |
Definition at line 47 of file ac3dsp.c.
Referenced by ff_ac3dsp_init().
static void ac3_rshift_int32_c | ( | int32_t * | src, |
unsigned int | len, | ||
unsigned int | shift | ||
) | [static] |
Definition at line 74 of file ac3dsp.c.
Referenced by ff_ac3dsp_init().
static void ac3_update_bap_counts_c | ( | uint16_t | mant_cnt[16], |
uint8_t * | bap, | ||
int | len | ||
) | [static] |
Definition at line 133 of file ac3dsp.c.
Referenced by ff_ac3dsp_init().
av_cold void ff_ac3dsp_init | ( | AC3DSPContext * | c, |
int | bit_exact | ||
) |
Definition at line 187 of file ac3dsp.c.
Referenced by ac3_decode_init(), and ff_ac3_encode_init().
static void float_to_fixed24_c | ( | int32_t * | dst, |
const float * | src, | ||
unsigned int | len | ||
) | [static] |
Definition at line 90 of file ac3dsp.c.
Referenced by ff_ac3dsp_init().
const uint16_t ff_ac3_bap_bits[16] |
{ 0, 0, 0, 3, 0, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 16 }
Number of mantissa bits written for each bap value.
bap values with fractional bits are set to 0 and are calculated separately.
Definition at line 140 of file ac3dsp.c.
Referenced by ac3_compute_mantissa_size_c().