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Merge remote-tracking branch 'qatar/master' 

* qatar/master:
  avfilter: allow setpts filter to use wallclock time for calculations

Conflicts:
	doc/filters.texi

Merged-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Michael Niedermayer 2013-01-25 15:04:41 +01:00
parent 25be63005f 0b55b16abc
commit fc2922836b
2 changed files with 20 additions and 0 deletions
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13
doc/filters.texi
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@ -5466,6 +5466,13 @@ previous output PTS
@item PREV_OUTT
previous output time in seconds
@item RTCTIME
wallclock (RTC) time in microseconds
@item RTCSTART
wallclock (RTC) time at the start of the movie in microseconds
@end table
@subsection Examples
@ -5506,6 +5513,12 @@ Apply an offset of 10 seconds to the input PTS:
@example
setpts=PTS+10/TB
@end example
@item
generate timestamps from a "live source" and rebase onto the current timebase
@example
setpts='(RTCTIME - RTCSTART) / (TB * 1000000)'
@end example
@end itemize
@section ebur128

7
libavfilter/f_setpts.c
View File

@ -27,6 +27,7 @@
#include "libavutil/eval.h"
#include "libavutil/internal.h"
#include "libavutil/mathematics.h"
#include "libavutil/time.h"
#include "avfilter.h"
#include "internal.h"
#include "audio.h"
@ -49,6 +50,8 @@ static const char *const var_names[] = {
"STARTT", ///< time at start of movie
"T", ///< original time in the file of the frame
"TB", ///< timebase
"RTCTIME", ///< wallclock (RTC) time in micro seconds
"RTCSTART", ///< wallclock (RTC) time at the start of the movie in micro seconds
NULL
};
@ -69,6 +72,8 @@ enum var_name {
VAR_STARTT,
VAR_T,
VAR_TB,
VAR_RTCTIME,
VAR_RTCSTART,
VAR_VARS_NB
};
@ -103,6 +108,7 @@ static int config_input(AVFilterLink *inlink)
setpts->type = inlink->type;
setpts->var_values[VAR_TB] = av_q2d(inlink->time_base);
setpts->var_values[VAR_RTCSTART] = av_gettime();
setpts->var_values[VAR_SAMPLE_RATE] =
setpts->type == AVMEDIA_TYPE_AUDIO ? inlink->sample_rate : NAN;
@ -145,6 +151,7 @@ static int filter_frame(AVFilterLink *inlink, AVFilterBufferRef *frame)
setpts->var_values[VAR_PTS ] = TS2D(frame->pts);
setpts->var_values[VAR_T ] = TS2T(frame->pts, inlink->time_base);
setpts->var_values[VAR_POS ] = frame->pos == -1 ? NAN : frame->pos;
setpts->var_values[VAR_RTCTIME ] = av_gettime();
switch (inlink->type) {
case AVMEDIA_TYPE_VIDEO: