mirrors/pulseaudio
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git synced 2025-11-03 09:01:50 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

add byte-to-usec and usec-to-byte converters that round up, not down

Browse source
This commit is contained in:
Lennart Poettering 2008-08-28 17:53:01 +02:00
parent f79c665812
commit bb8263be6f
2 changed files with 36 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

33
src/pulsecore/sample-util.c
View file

@ -31,6 +31,8 @@
#include <liboil/liboilfuncs.h>
#include <liboil/liboil.h>
#include <pulse/timeval.h>
#include <pulsecore/log.h>
#include <pulsecore/macro.h>
#include <pulsecore/g711.h>
@ -981,3 +983,34 @@ void pa_sample_clamp(pa_sample_format_t format, void *dst, size_t dstr, const vo
}
}
}
/* Similar to pa_bytes_to_usec() but rounds up, not down */
pa_usec_t pa_bytes_to_usec_round_up(uint64_t length, const pa_sample_spec *spec) {
size_t fs;
pa_usec_t usec;
pa_assert(spec);
fs = pa_frame_size(spec);
length = (length + fs - 1) / fs;
usec = (pa_usec_t) length * PA_USEC_PER_SEC;
return (usec + spec->rate - 1) / spec->rate;
}
/* Similar to pa_usec_to_bytes() but rounds up, not down */
size_t pa_usec_to_bytes_round_up(pa_usec_t t, const pa_sample_spec *spec) {
uint64_t u;
pa_assert(spec);
u = (uint64_t) t * (uint64_t) spec->rate;
u = (u + PA_USEC_PER_SEC - 1) / PA_USEC_PER_SEC;
u *= pa_frame_size(spec);
return (size_t) u;
}

3
src/pulsecore/sample-util.h
View file

@ -78,4 +78,7 @@ void pa_deinterleave(const void *src, void *dst[], unsigned channels, size_t ss,
void pa_sample_clamp(pa_sample_format_t format, void *dst, size_t dstr, const void *src, size_t sstr, unsigned n);
pa_usec_t pa_bytes_to_usec_round_up(uint64_t length, const pa_sample_spec *spec);
size_t pa_usec_to_bytes_round_up(pa_usec_t t, const pa_sample_spec *spec);
#endif