opusfile: opusfile.h Source File

| opusfile 0.12 Stand-alone decoder library for .opus files.

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opusfile.h
1/********************************************************************
2 * *
3 * THIS FILE IS PART OF THE libopusfile SOFTWARE CODEC SOURCE CODE. *
4 * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS *
5 * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
6 * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING. *
7 * *
8 * THE libopusfile SOURCE CODE IS (C) COPYRIGHT 1994-2012 *
9 * by the Xiph.Org Foundation and contributors https://xiph.org/ *
10 * *
11 ********************************************************************
12
13 function: stdio-based convenience library for opening/seeking/decoding
14 last mod: $Id: vorbisfile.h 17182 2010-04-29 03:48:32Z xiphmont $
15
16 ********************************************************************/
17#if !defined(_opusfile_h)
18# define _opusfile_h (1)
19
103# if defined(__cplusplus)
104extern "C" {
105# endif
106
107# include <stdarg.h>
108# include <stdio.h>
109# include <ogg/ogg.h>
110# include <opus_multistream.h>
111
114/*Enable special features for gcc and gcc-compatible compilers.*/
115# if !defined(OP_GNUC_PREREQ)
116# if defined(__GNUC__)&&defined(__GNUC_MINOR__)
117# define OP_GNUC_PREREQ(_maj,_min) \
118 ((__GNUC__<<16)+__GNUC_MINOR__>=((_maj)<<16)+(_min))
119# else
120# define OP_GNUC_PREREQ(_maj,_min) 0
121# endif
122# endif
123
124# if OP_GNUC_PREREQ(4,0)
125# pragma GCC visibility push(default)
126# endif
127
128typedef struct OpusHead OpusHead;
129typedef struct OpusTags OpusTags;
130typedef struct OpusPictureTag OpusPictureTag;
131typedef struct OpusServerInfo OpusServerInfo;
132typedef struct OpusFileCallbacks OpusFileCallbacks;
133typedef struct OggOpusFile OggOpusFile;
134
135/*Warning attributes for libopusfile functions.*/
136# if OP_GNUC_PREREQ(3,4)
137# define OP_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
138# else
139# define OP_WARN_UNUSED_RESULT
140# endif
141# if OP_GNUC_PREREQ(3,4)
142# define OP_ARG_NONNULL(_x) __attribute__((__nonnull__(_x)))
143# else
144# define OP_ARG_NONNULL(_x)
145# endif
146
158
160#define OP_FALSE (-1)
161/*Currently not used externally.*/
162#define OP_EOF (-2)
165#define OP_HOLE (-3)
168#define OP_EREAD (-128)
172#define OP_EFAULT (-129)
175#define OP_EIMPL (-130)
177#define OP_EINVAL (-131)
182#define OP_ENOTFORMAT (-132)
185#define OP_EBADHEADER (-133)
187#define OP_EVERSION (-134)
188/*Currently not used at all.*/
189#define OP_ENOTAUDIO (-135)
193#define OP_EBADPACKET (-136)
197#define OP_EBADLINK (-137)
199#define OP_ENOSEEK (-138)
201#define OP_EBADTIMESTAMP (-139)
202
205
208
210#define OPUS_CHANNEL_COUNT_MAX (255)
211
215 struct OpusHead{
225 int version;
227 int channel_count;
230 unsigned pre_skip;
237 opus_uint32 input_sample_rate;
244 int output_gain;
251 int mapping_family;
253 int stream_count;
260 int coupled_count;
268 unsigned char mapping[OPUS_CHANNEL_COUNT_MAX];
269};
270
301 struct OpusTags{
303 char **user_comments;
305 int *comment_lengths;
307 int comments;
310 char *vendor;
311};
312
315
318#define OP_PIC_FORMAT_UNKNOWN (-1)
320#define OP_PIC_FORMAT_URL (0)
322#define OP_PIC_FORMAT_JPEG (1)
324#define OP_PIC_FORMAT_PNG (2)
326#define OP_PIC_FORMAT_GIF (3)
327
331 struct OpusPictureTag{
358 opus_int32 type;
365 char *mime_type;
367 char *description;
369 opus_uint32 width;
371 opus_uint32 height;
374 opus_uint32 depth;
377 opus_uint32 colors;
379 opus_uint32 data_length;
381 unsigned char *data;
391 int format;
392};
393
402
428OP_WARN_UNUSED_RESULT int opus_head_parse(OpusHead *_head,
429 const unsigned char *_data,size_t _len) OP_ARG_NONNULL(2);
430
445ogg_int64_t opus_granule_sample(const OpusHead *_head,ogg_int64_t _gp)
446 OP_ARG_NONNULL(1);
447
462OP_WARN_UNUSED_RESULT int opus_tags_parse(OpusTags *_tags,
463 const unsigned char *_data,size_t _len) OP_ARG_NONNULL(2);
464
472int opus_tags_copy(OpusTags *_dst,const OpusTags *_src) OP_ARG_NONNULL(1);
473
478void opus_tags_init(OpusTags *_tags) OP_ARG_NONNULL(1);
479
491int opus_tags_add(OpusTags *_tags,const char *_tag,const char *_value)
492 OP_ARG_NONNULL(1) OP_ARG_NONNULL(2) OP_ARG_NONNULL(3);
493
504int opus_tags_add_comment(OpusTags *_tags,const char *_comment)
505 OP_ARG_NONNULL(1) OP_ARG_NONNULL(2);
506
520int opus_tags_set_binary_suffix(OpusTags *_tags,
521 const unsigned char *_data,int _len) OP_ARG_NONNULL(1);
522
538const char *opus_tags_query(const OpusTags *_tags,const char *_tag,int _count)
539 OP_ARG_NONNULL(1) OP_ARG_NONNULL(2);
540
548int opus_tags_query_count(const OpusTags *_tags,const char *_tag)
549 OP_ARG_NONNULL(1) OP_ARG_NONNULL(2);
550
556const unsigned char *opus_tags_get_binary_suffix(const OpusTags *_tags,
557 int *_len) OP_ARG_NONNULL(1) OP_ARG_NONNULL(2);
558
574int opus_tags_get_album_gain(const OpusTags *_tags,int *_gain_q8)
575 OP_ARG_NONNULL(1) OP_ARG_NONNULL(2);
576
592int opus_tags_get_track_gain(const OpusTags *_tags,int *_gain_q8)
593 OP_ARG_NONNULL(1) OP_ARG_NONNULL(2);
594
600void opus_tags_clear(OpusTags *_tags) OP_ARG_NONNULL(1);
601
611int opus_tagcompare(const char *_tag_name,const char *_comment);
612
626int opus_tagncompare(const char *_tag_name,int _tag_len,const char *_comment);
627
658OP_WARN_UNUSED_RESULT int opus_picture_tag_parse(OpusPictureTag *_pic,
659 const char *_tag) OP_ARG_NONNULL(1) OP_ARG_NONNULL(2);
660
665void opus_picture_tag_init(OpusPictureTag *_pic) OP_ARG_NONNULL(1);
666
672void opus_picture_tag_clear(OpusPictureTag *_pic) OP_ARG_NONNULL(1);
673
677
689
692/*These are the raw numbers used to define the request codes.
693 They should not be used directly.*/
694#define OP_SSL_SKIP_CERTIFICATE_CHECK_REQUEST (6464)
695#define OP_HTTP_PROXY_HOST_REQUEST (6528)
696#define OP_HTTP_PROXY_PORT_REQUEST (6592)
697#define OP_HTTP_PROXY_USER_REQUEST (6656)
698#define OP_HTTP_PROXY_PASS_REQUEST (6720)
699#define OP_GET_SERVER_INFO_REQUEST (6784)
700
701#define OP_URL_OPT(_request) ((char *)(_request))
702
703/*These macros trigger compilation errors or warnings if the wrong types are
704 provided to one of the URL options.*/
705#define OP_CHECK_INT(_x) ((void)((_x)==(opus_int32)0),(opus_int32)(_x))
706#define OP_CHECK_CONST_CHAR_PTR(_x) ((_x)+((_x)-(const char *)(_x)))
707#define OP_CHECK_SERVER_INFO_PTR(_x) ((_x)+((_x)-(OpusServerInfo *)(_x)))
708
712 struct OpusServerInfo{
716 char *name;
720 char *description;
724 char *genre;
728 char *url;
731 char *server;
735 char *content_type;
739 opus_int32 bitrate_kbps;
744 int is_public;
749 int is_ssl;
750};
751
756void opus_server_info_init(OpusServerInfo *_info) OP_ARG_NONNULL(1);
757
764void opus_server_info_clear(OpusServerInfo *_info) OP_ARG_NONNULL(1);
765
772#define OP_SSL_SKIP_CERTIFICATE_CHECK(_b) \
773 OP_URL_OPT(OP_SSL_SKIP_CERTIFICATE_CHECK_REQUEST),OP_CHECK_INT(_b)
774
783#define OP_HTTP_PROXY_HOST(_host) \
784 OP_URL_OPT(OP_HTTP_PROXY_HOST_REQUEST),OP_CHECK_CONST_CHAR_PTR(_host)
785
796#define OP_HTTP_PROXY_PORT(_port) \
797 OP_URL_OPT(OP_HTTP_PROXY_PORT_REQUEST),OP_CHECK_INT(_port)
798
809#define OP_HTTP_PROXY_USER(_user) \
810 OP_URL_OPT(OP_HTTP_PROXY_USER_REQUEST),OP_CHECK_CONST_CHAR_PTR(_user)
811
822#define OP_HTTP_PROXY_PASS(_pass) \
823 OP_URL_OPT(OP_HTTP_PROXY_PASS_REQUEST),OP_CHECK_CONST_CHAR_PTR(_pass)
824
843#define OP_GET_SERVER_INFO(_info) \
844 OP_URL_OPT(OP_GET_SERVER_INFO_REQUEST),OP_CHECK_SERVER_INFO_PTR(_info)
845
848
860
869typedef int (*op_read_func)(void *_stream,unsigned char *_ptr,int _nbytes);
870
880typedef int (*op_seek_func)(void *_stream,opus_int64 _offset,int _whence);
881
884typedef opus_int64 (*op_tell_func)(void *_stream);
885
890typedef int (*op_close_func)(void *_stream);
891
901 struct OpusFileCallbacks{
904 op_read_func read;
907 op_seek_func seek;
910 op_tell_func tell;
913 op_close_func close;
914};
915
933OP_WARN_UNUSED_RESULT void *op_fopen(OpusFileCallbacks *_cb,
934 const char *_path,const char *_mode) OP_ARG_NONNULL(1) OP_ARG_NONNULL(2)
935 OP_ARG_NONNULL(3);
936
950OP_WARN_UNUSED_RESULT void *op_fdopen(OpusFileCallbacks *_cb,
951 int _fd,const char *_mode) OP_ARG_NONNULL(1) OP_ARG_NONNULL(3);
952
972OP_WARN_UNUSED_RESULT void *op_freopen(OpusFileCallbacks *_cb,
973 const char *_path,const char *_mode,void *_stream) OP_ARG_NONNULL(1)
974 OP_ARG_NONNULL(2) OP_ARG_NONNULL(3) OP_ARG_NONNULL(4);
975
986OP_WARN_UNUSED_RESULT void *op_mem_stream_create(OpusFileCallbacks *_cb,
987 const unsigned char *_data,size_t _size) OP_ARG_NONNULL(1);
988
1012OP_WARN_UNUSED_RESULT void *op_url_stream_vcreate(OpusFileCallbacks *_cb,
1013 const char *_url,va_list _ap) OP_ARG_NONNULL(1) OP_ARG_NONNULL(2);
1014
1034OP_WARN_UNUSED_RESULT void *op_url_stream_create(OpusFileCallbacks *_cb,
1035 const char *_url,...) OP_ARG_NONNULL(1) OP_ARG_NONNULL(2);
1036
1039
1049
1080int op_test(OpusHead *_head,
1081 const unsigned char *_initial_data,size_t _initial_bytes);
1082
1092OP_WARN_UNUSED_RESULT OggOpusFile *op_open_file(const char *_path,int *_error)
1093 OP_ARG_NONNULL(1);
1094
1103OP_WARN_UNUSED_RESULT OggOpusFile *op_open_memory(const unsigned char *_data,
1104 size_t _size,int *_error);
1105
1132OP_WARN_UNUSED_RESULT OggOpusFile *op_vopen_url(const char *_url,
1133 int *_error,va_list _ap) OP_ARG_NONNULL(1);
1134
1154OP_WARN_UNUSED_RESULT OggOpusFile *op_open_url(const char *_url,
1155 int *_error,...) OP_ARG_NONNULL(1);
1156
1236OP_WARN_UNUSED_RESULT OggOpusFile *op_open_callbacks(void *_stream,
1237 const OpusFileCallbacks *_cb,const unsigned char *_initial_data,
1238 size_t _initial_bytes,int *_error) OP_ARG_NONNULL(2);
1239
1250OP_WARN_UNUSED_RESULT OggOpusFile *op_test_file(const char *_path,int *_error)
1251 OP_ARG_NONNULL(1);
1252
1262OP_WARN_UNUSED_RESULT OggOpusFile *op_test_memory(const unsigned char *_data,
1263 size_t _size,int *_error);
1264
1293OP_WARN_UNUSED_RESULT OggOpusFile *op_vtest_url(const char *_url,
1294 int *_error,va_list _ap) OP_ARG_NONNULL(1);
1295
1317OP_WARN_UNUSED_RESULT OggOpusFile *op_test_url(const char *_url,
1318 int *_error,...) OP_ARG_NONNULL(1);
1319
1385OP_WARN_UNUSED_RESULT OggOpusFile *op_test_callbacks(void *_stream,
1386 const OpusFileCallbacks *_cb,const unsigned char *_initial_data,
1387 size_t _initial_bytes,int *_error) OP_ARG_NONNULL(2);
1388
1415int op_test_open(OggOpusFile *_of) OP_ARG_NONNULL(1);
1416
1419void op_free(OggOpusFile *_of);
1420
1423
1441
1456int op_seekable(const OggOpusFile *_of) OP_ARG_NONNULL(1);
1457
1466int op_link_count(const OggOpusFile *_of) OP_ARG_NONNULL(1);
1467
1481opus_uint32 op_serialno(const OggOpusFile *_of,int _li) OP_ARG_NONNULL(1);
1482
1498int op_channel_count(const OggOpusFile *_of,int _li) OP_ARG_NONNULL(1);
1499
1520opus_int64 op_raw_total(const OggOpusFile *_of,int _li) OP_ARG_NONNULL(1);
1521
1538ogg_int64_t op_pcm_total(const OggOpusFile *_of,int _li) OP_ARG_NONNULL(1);
1539
1554const OpusHead *op_head(const OggOpusFile *_of,int _li) OP_ARG_NONNULL(1);
1555
1572const OpusTags *op_tags(const OggOpusFile *_of,int _li) OP_ARG_NONNULL(1);
1573
1589int op_current_link(const OggOpusFile *_of) OP_ARG_NONNULL(1);
1590
1611opus_int32 op_bitrate(const OggOpusFile *_of,int _li) OP_ARG_NONNULL(1);
1612
1624opus_int32 op_bitrate_instant(OggOpusFile *_of) OP_ARG_NONNULL(1);
1625
1630opus_int64 op_raw_tell(const OggOpusFile *_of) OP_ARG_NONNULL(1);
1631
1639ogg_int64_t op_pcm_tell(const OggOpusFile *_of) OP_ARG_NONNULL(1);
1640
1643
1671
1687int op_raw_seek(OggOpusFile *_of,opus_int64 _byte_offset) OP_ARG_NONNULL(1);
1688
1703int op_pcm_seek(OggOpusFile *_of,ogg_int64_t _pcm_offset) OP_ARG_NONNULL(1);
1704
1707
1748
1751#define OP_DEC_FORMAT_SHORT (7008)
1754#define OP_DEC_FORMAT_FLOAT (7040)
1755
1758#define OP_DEC_USE_DEFAULT (6720)
1759
1791typedef int (*op_decode_cb_func)(void *_ctx,OpusMSDecoder *_decoder,void *_pcm,
1792 const ogg_packet *_op,int _nsamples,int _nchannels,int _format,int _li);
1793
1815void op_set_decode_callback(OggOpusFile *_of,
1816 op_decode_cb_func _decode_cb,void *_ctx) OP_ARG_NONNULL(1);
1817
1821#define OP_HEADER_GAIN (0)
1822
1825#define OP_ALBUM_GAIN (3007)
1826
1829#define OP_TRACK_GAIN (3008)
1830
1833#define OP_ABSOLUTE_GAIN (3009)
1834
1852int op_set_gain_offset(OggOpusFile *_of,
1853 int _gain_type,opus_int32 _gain_offset_q8) OP_ARG_NONNULL(1);
1854
1865void op_set_dither_enabled(OggOpusFile *_of,int _enabled) OP_ARG_NONNULL(1);
1866
1947OP_WARN_UNUSED_RESULT int op_read(OggOpusFile *_of,
1948 opus_int16 *_pcm,int _buf_size,int *_li) OP_ARG_NONNULL(1);
1949
2028OP_WARN_UNUSED_RESULT int op_read_float(OggOpusFile *_of,
2029 float *_pcm,int _buf_size,int *_li) OP_ARG_NONNULL(1);
2030
2089OP_WARN_UNUSED_RESULT int op_read_stereo(OggOpusFile *_of,
2090 opus_int16 *_pcm,int _buf_size) OP_ARG_NONNULL(1);
2091
2150OP_WARN_UNUSED_RESULT int op_read_float_stereo(OggOpusFile *_of,
2151 float *_pcm,int _buf_size) OP_ARG_NONNULL(1);
2152
2155
2156# if OP_GNUC_PREREQ(4,0)
2157# pragma GCC visibility pop
2158# endif
2159
2160# if defined(__cplusplus)
2161}
2162# endif
2163
2164#endif
OpusFileCallbacks
The callbacks used to access non-FILE stream resources.
Definition opusfile.h:901
OpusFileCallbacks::close
op_close_func close
Used to close the stream when the decoder is freed.
Definition opusfile.h:913
OpusFileCallbacks::tell
op_tell_func tell
Used to return the current read position in the stream.
Definition opusfile.h:910
OpusFileCallbacks::read
op_read_func read
Used to read data from the stream.
Definition opusfile.h:904
OpusFileCallbacks::seek
op_seek_func seek
Used to seek in the stream.
Definition opusfile.h:907
OpusHead
Ogg Opus bitstream information.
Definition opusfile.h:215
OpusHead::coupled_count
int coupled_count
The number of coupled Opus streams in each Ogg packet, in the range 0...127.
Definition opusfile.h:260
OpusHead::output_gain
int output_gain
The gain to apply to the decoded output, in dB, as a Q8 value in the range -32768....
Definition opusfile.h:244
OpusHead::stream_count
int stream_count
The number of Opus streams in each Ogg packet, in the range 1...255.
Definition opusfile.h:253
OpusHead::mapping_family
int mapping_family
The channel mapping family, in the range 0...255.
Definition opusfile.h:251
OpusHead::input_sample_rate
opus_uint32 input_sample_rate
The sampling rate of the original input.
Definition opusfile.h:237
OpusHead::version
int version
The Ogg Opus format version, in the range 0...255.
Definition opusfile.h:225
OpusHead::pre_skip
unsigned pre_skip
The number of samples that should be discarded from the beginning of the stream.
Definition opusfile.h:230
OpusHead::mapping
unsigned char mapping[OPUS_CHANNEL_COUNT_MAX]
The mapping from coded stream channels to output channels.
Definition opusfile.h:268
OpusHead::channel_count
int channel_count
The number of channels, in the range 1...255.
Definition opusfile.h:227
OpusPictureTag
The contents of a METADATA_BLOCK_PICTURE tag.
Definition opusfile.h:331
OpusPictureTag::data
unsigned char * data
The binary picture data.
Definition opusfile.h:381
OpusPictureTag::height
opus_uint32 height
The height of the picture in pixels.
Definition opusfile.h:371
OpusPictureTag::type
opus_int32 type
The picture type according to the ID3v2 APIC frame:
Definition opusfile.h:358
OpusPictureTag::colors
opus_uint32 colors
For indexed-color pictures (e.g., GIF), the number of colors used, or 0 for non-indexed pictures.
Definition opusfile.h:377
OpusPictureTag::width
opus_uint32 width
The width of the picture in pixels.
Definition opusfile.h:369
OpusPictureTag::depth
opus_uint32 depth
The color depth of the picture in bits-per-pixel (not bits-per-channel).
Definition opusfile.h:374
OpusPictureTag::description
char * description
The description of the picture, in UTF-8.
Definition opusfile.h:367
OpusPictureTag::data_length
opus_uint32 data_length
The length of the picture data in bytes.
Definition opusfile.h:379
OpusPictureTag::format
int format
The format of the picture data, if known.
Definition opusfile.h:391
OpusPictureTag::mime_type
char * mime_type
The MIME type of the picture, in printable ASCII characters 0x20-0x7E.
Definition opusfile.h:365
OpusServerInfo
HTTP/Shoutcast/Icecast server information associated with a URL.
Definition opusfile.h:712
OpusServerInfo::bitrate_kbps
opus_int32 bitrate_kbps
The nominal stream bitrate in kbps (icy-br/ice-bitrate).
Definition opusfile.h:739
OpusServerInfo::genre
char * genre
The genre the server falls under (icy-genre/ice-genre).
Definition opusfile.h:724
OpusServerInfo::is_ssl
int is_ssl
Flag indicating whether the server is using HTTPS instead of HTTP.
Definition opusfile.h:749
OpusServerInfo::content_type
char * content_type
The media type of the entity sent to the recepient (Content-Type).
Definition opusfile.h:735
OpusServerInfo::name
char * name
The name of the server (icy-name/ice-name).
Definition opusfile.h:716
OpusServerInfo::server
char * server
The software used by the origin server (Server).
Definition opusfile.h:731
OpusServerInfo::url
char * url
The homepage for the server (icy-url/ice-url).
Definition opusfile.h:728
OpusServerInfo::is_public
int is_public
Flag indicating whether the server is public (1) or not (0) (icy-pub/ice-public).
Definition opusfile.h:744
OpusServerInfo::description
char * description
A short description of the server (icy-description/ice-description).
Definition opusfile.h:720
OpusTags
The metadata from an Ogg Opus stream.
Definition opusfile.h:301
OpusTags::comments
int comments
The total number of comment streams.
Definition opusfile.h:307
OpusTags::comment_lengths
int * comment_lengths
An array of the corresponding length of each vector, in bytes.
Definition opusfile.h:305
OpusTags::user_comments
char ** user_comments
The array of comment string vectors.
Definition opusfile.h:303
OpusTags::vendor
char * vendor
The null-terminated vendor string.
Definition opusfile.h:310