Struct blip_buf::BlipBuf
[−]
[src]
pub struct BlipBuf { /* fields omitted */ }Sample buffer that resamples from input clock rate to output sample rate
Methods
impl BlipBuf[src]
fn new(sample_count: u32) -> BlipBuf
Creates new buffer that can hold at most sample_count samples. Sets rates
so that there are MAX_RATIO clocks per sample. Returns pointer to new
buffer, or panics if insufficient memory.
fn set_rates(&mut self, clock_rate: f64, sample_rate: f64)
Sets approximate input clock rate and output sample rate. For every
clock_rate input clocks, approximately sample_rate samples are generated.
fn clear(&mut self)
Clears entire buffer. Afterwards, samples_avail() == 0.
fn add_delta(&mut self, clock_time: u32, delta: i32)
Adds positive/negative delta into buffer at specified clock time.
fn add_delta_fast(&mut self, clock_time: u32, delta: i32)
Same as add_delta(), but uses faster, lower-quality synthesis.
fn clocks_needed(&self, sample_count: u32) -> u32
Length of time frame, in clocks, needed to make sample_count additional
samples available.
fn end_frame(&mut self, clock_duration: u32)
Makes input clocks before clock_duration available for reading as output
samples. Also begins new time frame at clock_duration, so that clock time 0 in
the new time frame specifies the same clock as clock_duration in the old time
frame specified. Deltas can have been added slightly past clock_duration (up to
however many clocks there are in two output samples).
fn samples_avail(&self) -> u32
Number of buffered samples available for reading.
fn read_samples(&mut self, buf: &mut [i16], stereo: bool) -> usize
Reads and removes at most buf.len() samples and writes them to buf. If
stereo is true, writes output to every other element of buf, allowing easy
interleaving of two buffers into a stereo sample stream. Outputs 16-bit signed
samples. Returns number of samples actually read.