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Code Issues Releases Activity

avformat/mux: Move ff_choose_timebase to nutenc, its only user

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(This function does not seem to abide by its documentation.)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-05-06 14:44:15 +02:00
parent f4a2d722aa
commit 107bdd97a9
3 changed files with 21 additions and 25 deletions
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9
libavformat/internal.h
View File

@ -765,15 +765,6 @@ int ff_is_intra_only(enum AVCodecID id);
*/
enum AVCodecID ff_get_pcm_codec_id(int bps, int flt, int be, int sflags);
/**
* Chooses a timebase for muxing the specified stream.
*
* The chosen timebase allows sample accurate timestamps based
* on the framerate or sample rate for audio streams. It also is
* at least as precise as 1/min_precision would be.
*/
AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision);
/**
* Chooses a timebase for muxing the specified stream.
*/

15
libavformat/mux.c
View File

@ -89,21 +89,6 @@ static void frac_add(FFFrac *f, int64_t incr)
f->num = num;
}
AVRational ff_choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
{
AVRational q;
q = st->time_base;
for (int j = 2; j < 14; j += 1 + (j > 2))
while (q.den / q.num < min_precision && q.num % j == 0)
q.num /= j;
while (q.den / q.num < min_precision && q.den < (1<<24))
q.den <<= 1;
return q;
}
enum AVChromaLocation ff_choose_chroma_location(AVFormatContext *s, AVStream *st)
{
AVCodecParameters *par = st->codecpar;

22
libavformat/nutenc.c
View File

@ -36,6 +36,26 @@
#include "riff.h"
#include "version.h"
/**
* Chooses a timebase for muxing the specified stream.
*
* The chosen timebase allows sample accurate timestamps based
* on the framerate or sample rate for audio streams. It also is
* at least as precise as 1/min_precision would be.
*/
static AVRational choose_timebase(AVFormatContext *s, AVStream *st, int min_precision)
{
AVRational q = st->time_base;
for (int j = 2; j < 14; j += 1 + (j > 2))
while (q.den / q.num < min_precision && q.num % j == 0)
q.num /= j;
while (q.den / q.num < min_precision && q.den < (1<<24))
q.den <<= 1;
return q;
}
static int find_expected_header(AVCodecParameters *p, int size, int key_frame,
uint8_t out[64])
{
@ -728,7 +748,7 @@ static int nut_write_header(AVFormatContext *s)
if (st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO && st->codecpar->sample_rate) {
time_base = (AVRational) {1, st->codecpar->sample_rate};
} else {
time_base = ff_choose_timebase(s, st, 48000);
time_base = choose_timebase(s, st, 48000);
}
avpriv_set_pts_info(st, 64, time_base.num, time_base.den);