mp4getsamplesize.3

完整的RTP RTSP代码库

.TH "MP4" "3" "Version 0.9" "Cisco Systems Inc." "MP4 File Format Library"
.SH "NAME"
.LP 
\fBMP4GetSampleSize\fR \- Get the size of a track sample
.SH "SYNTAX"
.LP 
#include <mp4.h>
.LP 
u_int32_t \fBMP4GetSampleSize\fR(
.br 
	MP4FileHandle \fIhFile\fP,
.br 
	MP4TrackId \fItrackId\fP,
.br 
	MP4SampleId \fIsampleId\fP
.br 
);
.SH "ARGUMENTS"
.LP 
.TP 
\fIhFile\fP
Specifies the mp4 file to which the operation applies.
.TP 
\fItrackId\fP
Specifies the track to which the operation applies.
.TP 
\fIsampleId\fP
Specifies the sample to which the operation applies. Caveat: the first sample has id 1 not 0.

.SH "RETURN VALUES"
.LP 
Upon success, the sample size in bytes. Upon an error, 0.
.SH "DESCRIPTION"
.LP 
\fBMP4GetSampleSize\fR returns the size in bytes of the specified sample from the specified track.
.SH "SEE ALSO"
.LP 
MP4(3)