Mercurial > hg > sv-dependency-builds
annotate src/libsndfile-1.0.27/doc/embedded_files.html @ 125:cd6cdf86811e
Current libsndfile source
| author | Chris Cannam <cannam@all-day-breakfast.com> |
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| date | Tue, 18 Oct 2016 13:22:47 +0100 |
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| children |
| rev | line source |
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| cannam@125 | 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> |
| cannam@125 | 2 <HTML> |
| cannam@125 | 3 |
| cannam@125 | 4 <HEAD> |
| cannam@125 | 5 <TITLE> |
| cannam@125 | 6 libsndfile : Embedded Sound Files. |
| cannam@125 | 7 </TITLE> |
| cannam@125 | 8 <META NAME="Author" CONTENT="Erik de Castro Lopo (erikd AT mega-nerd DOT com)"> |
| cannam@125 | 9 <META NAME="Description" CONTENT="The libsndfile API."> |
| cannam@125 | 10 <META NAME="Keywords" CONTENT="WAV AIFF AU libsndfile sound audio dsp Linux"> |
| cannam@125 | 11 <LINK REL="stylesheet" HREF="libsndfile.css" TYPE="text/css" MEDIA="all"> |
| cannam@125 | 12 <LINK REL="stylesheet" HREF="print.css" TYPE="text/css" MEDIA="print"> |
| cannam@125 | 13 </HEAD> |
| cannam@125 | 14 <!-- pepper --> |
| cannam@125 | 15 <BODY> |
| cannam@125 | 16 <!-- pepper --> |
| cannam@125 | 17 <H1><B>Embedded Sound Files.</B></H1> |
| cannam@125 | 18 |
| cannam@125 | 19 <P> |
| cannam@125 | 20 By using the open SNDFILE with a file descriptor function: |
| cannam@125 | 21 </P> |
| cannam@125 | 22 <!-- pepper --> |
| cannam@125 | 23 <PRE> |
| cannam@125 | 24 SNDFILE* sf_open_fd (int fd, int mode, SF_INFO *sfinfo, int close_desc) ; |
| cannam@125 | 25 </PRE> |
| cannam@125 | 26 <!-- pepper --> |
| cannam@125 | 27 <P> |
| cannam@125 | 28 it is possible to open sound files embedded within larger files. |
| cannam@125 | 29 There are however a couple of caveats: |
| cannam@125 | 30 <P> |
| cannam@125 | 31 <!-- pepper --> |
| cannam@125 | 32 <UL> |
| cannam@125 | 33 <LI> Read/Write mode (SFM_RDWR) is not supported. |
| cannam@125 | 34 <LI> Writing of embedded files is only supported at the end of the file. |
| cannam@125 | 35 <LI> Reading of embedded files is only supported at file offsets greater |
| cannam@125 | 36 than zero. |
| cannam@125 | 37 <LI> Not all file formats are supported (currently only WAV, AIFF and AU). |
| cannam@125 | 38 </UL> |
| cannam@125 | 39 <!-- pepper --> |
| cannam@125 | 40 <P> |
| cannam@125 | 41 The test program <B>multi_file_test.c</B> in the <B>tests/</B> directory of the |
| cannam@125 | 42 source code tarball shows how this functionality is used to read and write |
| cannam@125 | 43 embedded files. |
| cannam@125 | 44 </P> |
| cannam@125 | 45 <!-- pepper --> |
| cannam@125 | 46 </BODY> |
| cannam@125 | 47 </HTML> |