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avformat/internal: Move definition of FFStream->info to demux.h

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It is only used by avformat_find_stream_info().

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
This commit is contained in:
Andreas Rheinhardt 2022-05-06 18:37:18 +02:00
parent 35ec5c819b
commit 3cfae9e038
4 changed files with 54 additions and 51 deletions
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45
libavformat/demux.c
View File

@ -2173,59 +2173,60 @@ static int tb_unreliable(AVCodecContext *c)
int ff_rfps_add_frame(AVFormatContext *ic, AVStream *st, int64_t ts)
{
FFStream *const sti = ffstream(st);
int64_t last = sti->info->last_dts;
FFStreamInfo *info = sti->info;
int64_t last = info->last_dts;
if ( ts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && ts > last
&& ts - (uint64_t)last < INT64_MAX) {
double dts = (is_relative(ts) ? ts - RELATIVE_TS_BASE : ts) * av_q2d(st->time_base);
int64_t duration = ts - last;
if (!sti->info->duration_error)
sti->info->duration_error = av_mallocz(sizeof(sti->info->duration_error[0])*2);
if (!sti->info->duration_error)
if (!info->duration_error)
info->duration_error = av_mallocz(sizeof(info->duration_error[0])*2);
if (!info->duration_error)
return AVERROR(ENOMEM);
// if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
// av_log(NULL, AV_LOG_ERROR, "%f\n", dts);
for (int i = 0; i < MAX_STD_TIMEBASES; i++) {
if (sti->info->duration_error[0][1][i] < 1e10) {
if (info->duration_error[0][1][i] < 1e10) {
int framerate = get_std_framerate(i);
double sdts = dts*framerate/(1001*12);
for (int j = 0; j < 2; j++) {
int64_t ticks = llrint(sdts+j*0.5);
double error = sdts - ticks + j*0.5;
sti->info->duration_error[j][0][i] += error;
sti->info->duration_error[j][1][i] += error*error;
info->duration_error[j][0][i] += error;
info->duration_error[j][1][i] += error*error;
}
}
}
if (sti->info->rfps_duration_sum <= INT64_MAX - duration) {
sti->info->duration_count++;
sti->info->rfps_duration_sum += duration;
if (info->rfps_duration_sum <= INT64_MAX - duration) {
info->duration_count++;
info->rfps_duration_sum += duration;
}
if (sti->info->duration_count % 10 == 0) {
int n = sti->info->duration_count;
if (info->duration_count % 10 == 0) {
int n = info->duration_count;
for (int i = 0; i < MAX_STD_TIMEBASES; i++) {
if (sti->info->duration_error[0][1][i] < 1e10) {
double a0 = sti->info->duration_error[0][0][i] / n;
double error0 = sti->info->duration_error[0][1][i] / n - a0*a0;
double a1 = sti->info->duration_error[1][0][i] / n;
double error1 = sti->info->duration_error[1][1][i] / n - a1*a1;
if (info->duration_error[0][1][i] < 1e10) {
double a0 = info->duration_error[0][0][i] / n;
double error0 = info->duration_error[0][1][i] / n - a0*a0;
double a1 = info->duration_error[1][0][i] / n;
double error1 = info->duration_error[1][1][i] / n - a1*a1;
if (error0 > 0.04 && error1 > 0.04) {
sti->info->duration_error[0][1][i] = 2e10;
sti->info->duration_error[1][1][i] = 2e10;
info->duration_error[0][1][i] = 2e10;
info->duration_error[1][1][i] = 2e10;
}
}
}
}
// ignore the first 4 values, they might have some random jitter
if (sti->info->duration_count > 3 && is_relative(ts) == is_relative(last))
sti->info->duration_gcd = av_gcd(sti->info->duration_gcd, duration);
if (info->duration_count > 3 && is_relative(ts) == is_relative(last))
info->duration_gcd = av_gcd(info->duration_gcd, duration);
}
if (ts != AV_NOPTS_VALUE)
sti->info->last_dts = ts;
info->last_dts = ts;
return 0;
}

29
libavformat/demux.h
View File

@ -26,6 +26,35 @@
#include "libavcodec/packet.h"
#include "avformat.h"
#define MAX_STD_TIMEBASES (30*12+30+3+6)
typedef struct FFStreamInfo {
int64_t last_dts;
int64_t duration_gcd;
int duration_count;
int64_t rfps_duration_sum;
double (*duration_error)[2][MAX_STD_TIMEBASES];
int64_t codec_info_duration;
int64_t codec_info_duration_fields;
int frame_delay_evidence;
/**
* 0 -> decoder has not been searched for yet.
* >0 -> decoder found
* <0 -> decoder with codec_id == -found_decoder has not been found
*/
int found_decoder;
int64_t last_duration;
/**
* Those are used for average framerate estimation.
*/
int64_t fps_first_dts;
int fps_first_dts_idx;
int64_t fps_last_dts;
int fps_last_dts_idx;
} FFStreamInfo;
#define RELATIVE_TS_BASE (INT64_MAX - (1LL << 48))
static av_always_inline int is_relative(int64_t ts)

30
libavformat/internal.h
View File

@ -245,38 +245,10 @@ typedef struct FFStream {
FFFrac *priv_pts;
#define MAX_STD_TIMEBASES (30*12+30+3+6)
/**
* Stream information used internally by avformat_find_stream_info()
*/
struct {
int64_t last_dts;
int64_t duration_gcd;
int duration_count;
int64_t rfps_duration_sum;
double (*duration_error)[2][MAX_STD_TIMEBASES];
int64_t codec_info_duration;
int64_t codec_info_duration_fields;
int frame_delay_evidence;
/**
* 0 -> decoder has not been searched for yet.
* >0 -> decoder found
* <0 -> decoder with codec_id == -found_decoder has not been found
*/
int found_decoder;
int64_t last_duration;
/**
* Those are used for average framerate estimation.
*/
int64_t fps_first_dts;
int fps_first_dts_idx;
int64_t fps_last_dts;
int fps_last_dts_idx;
} *info;
struct FFStreamInfo *info;
AVIndexEntry *index_entries; /**< Only used if the format does not
support seeking natively. */

1
libavformat/utils.c
View File

@ -40,6 +40,7 @@
#include "avformat.h"
#include "avio_internal.h"
#include "demux.h"
#include "internal.h"
#if CONFIG_NETWORK
#include "network.h"