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Defines | |
#define | _SPANDSP_TONE_GENERATE_H_ |
#define | make_tone_gen_descriptor tone_gen_descriptor_init |
Typedefs | |
typedef tone_gen_tone_descriptor_s | tone_gen_tone_descriptor_t |
typedef tone_gen_descriptor_s | tone_gen_descriptor_t |
typedef tone_gen_state_s | tone_gen_state_t |
Functions | |
tone_gen_descriptor_t * | tone_gen_descriptor_init (tone_gen_descriptor_t *s, int f1, int l1, int f2, int l2, int d1, int d2, int d3, int d4, int repeat) |
Create a tone generator descriptor. | |
void | tone_gen_descriptor_free (tone_gen_descriptor_t *s) |
SPAN_DECLARE_NONSTD (int) tone_gen(tone_gen_state_t *s | |
Get the next bit of data from a T.38 rate adapting non-ECM buffer context. | |
tone_gen_state_t * | tone_gen_init (tone_gen_state_t *s, tone_gen_descriptor_t *t) |
int | tone_gen_release (tone_gen_state_t *s) |
int | tone_gen_free (tone_gen_state_t *s) |
Variables | |
int16_t | amp [] |
int16_t int | max_samples |
typedef struct tone_gen_descriptor_s tone_gen_descriptor_t |
Cadenced multi-tone generator descriptor.
typedef struct tone_gen_state_s tone_gen_state_t |
Cadenced multi-tone generator state descriptor. This defines the state of a single working instance of a generator.
SPAN_DECLARE_NONSTD | ( | int | ) |
Get the next bit of data from a T.38 rate adapting non-ECM buffer context.
Process a block of received FAX audio samples.
s | The T.38 context. | |
amp | The audio sample buffer. | |
len | The number of samples in the buffer. |
tone_gen_descriptor_t* tone_gen_descriptor_init | ( | tone_gen_descriptor_t * | s, | |
int | f1, | |||
int | l1, | |||
int | f2, | |||
int | l2, | |||
int | d1, | |||
int | d2, | |||
int | d3, | |||
int | d4, | |||
int | repeat | |||
) |
Create a tone generator descriptor.
Create a tone generator descriptor
s | The descriptor | |
f1 | The first frequency, in Hz | |
l1 | The level of the first frequency, in dBm0 | |
f2 | 0 for no second frequency, a positive number for the second frequency, in Hz, or a negative number for an AM modulation frequency, in Hz | |
l2 | The level of the second frequency, in dBm0, or the percentage modulation depth for an AM modulated tone. | |
d1 | x | |
d2 | x | |
d3 | x | |
d4 | x | |
repeat | x |