Squashed 'vorbis/' content from commit d22c3ab5f

git-subtree-dir: vorbis
git-subtree-split: d22c3ab5f633460abc2532feee60ca0892134cbf

4 files changed, 889 insertions, 0 deletions

diff --git a/include/vorbis/Makefile.am b/include/vorbis/Makefile.am
new file mode 100644
index 0000000..dbba34e
--- /dev/null
+++ b/include/vorbis/Makefile.am
@@ -0,0 +1,7 @@
+## Process this file with automake to produce Makefile.in
+
+vorbisincludedir = $(includedir)/vorbis
+
+vorbisinclude_HEADERS = codec.h vorbisfile.h vorbisenc.h
+
+
diff --git a/include/vorbis/codec.h b/include/vorbis/codec.h
new file mode 100644
index 0000000..42aa291
--- /dev/null
+++ b/include/vorbis/codec.h
@@ -0,0 +1,242 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+
+ ********************************************************************
+
+ function: libvorbis codec headers
+
+ ********************************************************************/
+
+#ifndef _vorbis_codec_h_
+#define _vorbis_codec_h_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#include <ogg/ogg.h>
+
+typedef struct vorbis_info{
+  int version;
+  int channels;
+  long rate;
+
+  /* The below bitrate declarations are *hints*.
+     Combinations of the three values carry the following implications:
+
+     all three set to the same value:
+       implies a fixed rate bitstream
+     only nominal set:
+       implies a VBR stream that averages the nominal bitrate.  No hard
+       upper/lower limit
+     upper and or lower set:
+       implies a VBR bitstream that obeys the bitrate limits. nominal
+       may also be set to give a nominal rate.
+     none set:
+       the coder does not care to speculate.
+  */
+
+  long bitrate_upper;
+  long bitrate_nominal;
+  long bitrate_lower;
+  long bitrate_window;
+
+  void *codec_setup;
+} vorbis_info;
+
+/* vorbis_dsp_state buffers the current vorbis audio
+   analysis/synthesis state.  The DSP state belongs to a specific
+   logical bitstream ****************************************************/
+typedef struct vorbis_dsp_state{
+  int analysisp;
+  vorbis_info *vi;
+
+  float **pcm;
+  float **pcmret;
+  int      pcm_storage;
+  int      pcm_current;
+  int      pcm_returned;
+
+  int  preextrapolate;
+  int  eofflag;
+
+  long lW;
+  long W;
+  long nW;
+  long centerW;
+
+  ogg_int64_t granulepos;
+  ogg_int64_t sequence;
+
+  ogg_int64_t glue_bits;
+  ogg_int64_t time_bits;
+  ogg_int64_t floor_bits;
+  ogg_int64_t res_bits;
+
+  void       *backend_state;
+} vorbis_dsp_state;
+
+typedef struct vorbis_block{
+  /* necessary stream state for linking to the framing abstraction */
+  float  **pcm;       /* this is a pointer into local storage */
+  oggpack_buffer opb;
+
+  long  lW;
+  long  W;
+  long  nW;
+  int   pcmend;
+  int   mode;
+
+  int         eofflag;
+  ogg_int64_t granulepos;
+  ogg_int64_t sequence;
+  vorbis_dsp_state *vd; /* For read-only access of configuration */
+
+  /* local storage to avoid remallocing; it's up to the mapping to
+     structure it */
+  void               *localstore;
+  long                localtop;
+  long                localalloc;
+  long                totaluse;
+  struct alloc_chain *reap;
+
+  /* bitmetrics for the frame */
+  long glue_bits;
+  long time_bits;
+  long floor_bits;
+  long res_bits;
+
+  void *internal;
+
+} vorbis_block;
+
+/* vorbis_block is a single block of data to be processed as part of
+the analysis/synthesis stream; it belongs to a specific logical
+bitstream, but is independent from other vorbis_blocks belonging to
+that logical bitstream. *************************************************/
+
+struct alloc_chain{
+  void *ptr;
+  struct alloc_chain *next;
+};
+
+/* vorbis_info contains all the setup information specific to the
+   specific compression/decompression mode in progress (eg,
+   psychoacoustic settings, channel setup, options, codebook
+   etc). vorbis_info and substructures are in backends.h.
+*********************************************************************/
+
+/* the comments are not part of vorbis_info so that vorbis_info can be
+   static storage */
+typedef struct vorbis_comment{
+  /* unlimited user comment fields.  libvorbis writes 'libvorbis'
+     whatever vendor is set to in encode */
+  char **user_comments;
+  int   *comment_lengths;
+  int    comments;
+  char  *vendor;
+
+} vorbis_comment;
+
+
+/* libvorbis encodes in two abstraction layers; first we perform DSP
+   and produce a packet (see docs/analysis.txt).  The packet is then
+   coded into a framed OggSquish bitstream by the second layer (see
+   docs/framing.txt).  Decode is the reverse process; we sync/frame
+   the bitstream and extract individual packets, then decode the
+   packet back into PCM audio.
+
+   The extra framing/packetizing is used in streaming formats, such as
+   files.  Over the net (such as with UDP), the framing and
+   packetization aren't necessary as they're provided by the transport
+   and the streaming layer is not used */
+
+/* Vorbis PRIMITIVES: general ***************************************/
+
+extern void     vorbis_info_init(vorbis_info *vi);
+extern void     vorbis_info_clear(vorbis_info *vi);
+extern int      vorbis_info_blocksize(vorbis_info *vi,int zo);
+extern void     vorbis_comment_init(vorbis_comment *vc);
+extern void     vorbis_comment_add(vorbis_comment *vc, const char *comment);
+extern void     vorbis_comment_add_tag(vorbis_comment *vc,
+                                       const char *tag, const char *contents);
+extern char    *vorbis_comment_query(vorbis_comment *vc, const char *tag, int count);
+extern int      vorbis_comment_query_count(vorbis_comment *vc, const char *tag);
+extern void     vorbis_comment_clear(vorbis_comment *vc);
+
+extern int      vorbis_block_init(vorbis_dsp_state *v, vorbis_block *vb);
+extern int      vorbis_block_clear(vorbis_block *vb);
+extern void     vorbis_dsp_clear(vorbis_dsp_state *v);
+extern double   vorbis_granule_time(vorbis_dsp_state *v,
+                                    ogg_int64_t granulepos);
+
+extern const char *vorbis_version_string(void);
+
+/* Vorbis PRIMITIVES: analysis/DSP layer ****************************/
+
+extern int      vorbis_analysis_init(vorbis_dsp_state *v,vorbis_info *vi);
+extern int      vorbis_commentheader_out(vorbis_comment *vc, ogg_packet *op);
+extern int      vorbis_analysis_headerout(vorbis_dsp_state *v,
+                                          vorbis_comment *vc,
+                                          ogg_packet *op,
+                                          ogg_packet *op_comm,
+                                          ogg_packet *op_code);
+extern float  **vorbis_analysis_buffer(vorbis_dsp_state *v,int vals);
+extern int      vorbis_analysis_wrote(vorbis_dsp_state *v,int vals);
+extern int      vorbis_analysis_blockout(vorbis_dsp_state *v,vorbis_block *vb);
+extern int      vorbis_analysis(vorbis_block *vb,ogg_packet *op);
+
+extern int      vorbis_bitrate_addblock(vorbis_block *vb);
+extern int      vorbis_bitrate_flushpacket(vorbis_dsp_state *vd,
+                                           ogg_packet *op);
+
+/* Vorbis PRIMITIVES: synthesis layer *******************************/
+extern int      vorbis_synthesis_idheader(ogg_packet *op);
+extern int      vorbis_synthesis_headerin(vorbis_info *vi,vorbis_comment *vc,
+                                          ogg_packet *op);
+
+extern int      vorbis_synthesis_init(vorbis_dsp_state *v,vorbis_info *vi);
+extern int      vorbis_synthesis_restart(vorbis_dsp_state *v);
+extern int      vorbis_synthesis(vorbis_block *vb,ogg_packet *op);
+extern int      vorbis_synthesis_trackonly(vorbis_block *vb,ogg_packet *op);
+extern int      vorbis_synthesis_blockin(vorbis_dsp_state *v,vorbis_block *vb);
+extern int      vorbis_synthesis_pcmout(vorbis_dsp_state *v,float ***pcm);
+extern int      vorbis_synthesis_lapout(vorbis_dsp_state *v,float ***pcm);
+extern int      vorbis_synthesis_read(vorbis_dsp_state *v,int samples);
+extern long     vorbis_packet_blocksize(vorbis_info *vi,ogg_packet *op);
+
+extern int      vorbis_synthesis_halfrate(vorbis_info *v,int flag);
+extern int      vorbis_synthesis_halfrate_p(vorbis_info *v);
+
+/* Vorbis ERRORS and return codes ***********************************/
+
+#define OV_FALSE      -1
+#define OV_EOF        -2
+#define OV_HOLE       -3
+
+#define OV_EREAD      -128
+#define OV_EFAULT     -129
+#define OV_EIMPL      -130
+#define OV_EINVAL     -131
+#define OV_ENOTVORBIS -132
+#define OV_EBADHEADER -133
+#define OV_EVERSION   -134
+#define OV_ENOTAUDIO  -135
+#define OV_EBADPACKET -136
+#define OV_EBADLINK   -137
+#define OV_ENOSEEK    -138
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif
+
diff --git a/include/vorbis/vorbisenc.h b/include/vorbis/vorbisenc.h
new file mode 100644
index 0000000..55f3b4a
--- /dev/null
+++ b/include/vorbis/vorbisenc.h
@@ -0,0 +1,435 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2001             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+ function: vorbis encode-engine setup
+
+ ********************************************************************/
+
+/** \file
+ * Libvorbisenc is a convenient API for setting up an encoding
+ * environment using libvorbis. Libvorbisenc encapsulates the
+ * actions needed to set up the encoder properly.
+ */
+
+#ifndef _OV_ENC_H_
+#define _OV_ENC_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#include "codec.h"
+
+/**
+ * This is the primary function within libvorbisenc for setting up managed
+ * bitrate modes.
+ *
+ * Before this function is called, the \ref vorbis_info
+ * struct should be initialized by using vorbis_info_init() from the libvorbis
+ * API.  After encoding, vorbis_info_clear() should be called.
+ *
+ * The max_bitrate, nominal_bitrate, and min_bitrate settings are used to set
+ * constraints for the encoded file.  This function uses these settings to
+ * select the appropriate encoding mode and set it up.
+ *
+ * \param vi               Pointer to an initialized \ref vorbis_info struct.
+ * \param channels         The number of channels to be encoded.
+ * \param rate             The sampling rate of the source audio.
+ * \param max_bitrate      Desired maximum bitrate (limit). -1 indicates unset.
+ * \param nominal_bitrate  Desired average, or central, bitrate. -1 indicates unset.
+ * \param min_bitrate      Desired minimum bitrate. -1 indicates unset.
+ *
+ * \return Zero for success, and negative values for failure.
+ *
+ * \retval 0          Success.
+ * \retval OV_EFAULT  Internal logic fault; indicates a bug or heap/stack corruption.
+ * \retval OV_EINVAL  Invalid setup request, eg, out of range argument.
+ * \retval OV_EIMPL   Unimplemented mode; unable to comply with bitrate request.
+ */
+extern int vorbis_encode_init(vorbis_info *vi,
+                              long channels,
+                              long rate,
+
+                              long max_bitrate,
+                              long nominal_bitrate,
+                              long min_bitrate);
+
+/**
+ * This function performs step-one of a three-step bitrate-managed encode
+ * setup.  It functions similarly to the one-step setup performed by \ref
+ * vorbis_encode_init but allows an application to make further encode setup
+ * tweaks using \ref vorbis_encode_ctl before finally calling \ref
+ * vorbis_encode_setup_init to complete the setup process.
+ *
+ * Before this function is called, the \ref vorbis_info struct should be
+ * initialized by using vorbis_info_init() from the libvorbis API.  After
+ * encoding, vorbis_info_clear() should be called.
+ *
+ * The max_bitrate, nominal_bitrate, and min_bitrate settings are used to set
+ * constraints for the encoded file.  This function uses these settings to
+ * select the appropriate encoding mode and set it up.
+ *
+ * \param vi                Pointer to an initialized vorbis_info struct.
+ * \param channels          The number of channels to be encoded.
+ * \param rate              The sampling rate of the source audio.
+ * \param max_bitrate       Desired maximum bitrate (limit). -1 indicates unset.
+ * \param nominal_bitrate   Desired average, or central, bitrate. -1 indicates unset.
+ * \param min_bitrate       Desired minimum bitrate. -1 indicates unset.
+ *
+ * \return Zero for success, and negative for failure.
+ *
+ * \retval 0           Success
+ * \retval OV_EFAULT   Internal logic fault; indicates a bug or heap/stack corruption.
+ * \retval OV_EINVAL   Invalid setup request, eg, out of range argument.
+ * \retval OV_EIMPL    Unimplemented mode; unable to comply with bitrate request.
+ */
+extern int vorbis_encode_setup_managed(vorbis_info *vi,
+                                       long channels,
+                                       long rate,
+
+                                       long max_bitrate,
+                                       long nominal_bitrate,
+                                       long min_bitrate);
+
+/**
+ * This function performs step-one of a three-step variable bitrate
+ * (quality-based) encode setup.  It functions similarly to the one-step setup
+ * performed by \ref vorbis_encode_init_vbr() but allows an application to
+ * make further encode setup tweaks using \ref vorbis_encode_ctl() before
+ * finally calling \ref vorbis_encode_setup_init to complete the setup
+ * process.
+ *
+ * Before this function is called, the \ref vorbis_info struct should be
+ * initialized by using \ref vorbis_info_init() from the libvorbis API.  After
+ * encoding, vorbis_info_clear() should be called.
+ *
+ * \param vi        Pointer to an initialized vorbis_info struct.
+ * \param channels  The number of channels to be encoded.
+ * \param rate      The sampling rate of the source audio.
+ * \param quality   Desired quality level, currently from -0.1 to 1.0 (lo to hi).
+ *
+ * \return Zero for success, and negative values for failure.
+ *
+ * \retval  0          Success
+ * \retval  OV_EFAULT  Internal logic fault; indicates a bug or heap/stack corruption.
+ * \retval  OV_EINVAL  Invalid setup request, eg, out of range argument.
+ * \retval  OV_EIMPL   Unimplemented mode; unable to comply with quality level request.
+ */
+extern int vorbis_encode_setup_vbr(vorbis_info *vi,
+                                  long channels,
+                                  long rate,
+
+                                  float quality
+                                  );
+
+/**
+ * This is the primary function within libvorbisenc for setting up variable
+ * bitrate ("quality" based) modes.
+ *
+ *
+ * Before this function is called, the vorbis_info struct should be
+ * initialized by using vorbis_info_init() from the libvorbis API. After
+ * encoding, vorbis_info_clear() should be called.
+ *
+ * \param vi           Pointer to an initialized vorbis_info struct.
+ * \param channels     The number of channels to be encoded.
+ * \param rate         The sampling rate of the source audio.
+ * \param base_quality Desired quality level, currently from -0.1 to 1.0 (lo to hi).
+ *
+ *
+ * \return Zero for success, or a negative number for failure.
+ *
+ * \retval 0           Success
+ * \retval OV_EFAULT   Internal logic fault; indicates a bug or heap/stack corruption.
+ * \retval OV_EINVAL   Invalid setup request, eg, out of range argument.
+ * \retval OV_EIMPL    Unimplemented mode; unable to comply with quality level request.
+ */
+extern int vorbis_encode_init_vbr(vorbis_info *vi,
+                                  long channels,
+                                  long rate,
+
+                                  float base_quality
+                                  );
+
+/**
+ * This function performs the last stage of three-step encoding setup, as
+ * described in the API overview under managed bitrate modes.
+ *
+ * Before this function is called, the \ref vorbis_info struct should be
+ * initialized by using vorbis_info_init() from the libvorbis API, one of
+ * \ref vorbis_encode_setup_managed() or \ref vorbis_encode_setup_vbr() called to
+ * initialize the high-level encoding setup, and \ref vorbis_encode_ctl()
+ * called if necessary to make encoding setup changes.
+ * vorbis_encode_setup_init() finalizes the highlevel encoding structure into
+ * a complete encoding setup after which the application may make no further
+ * setup changes.
+ *
+ * After encoding, vorbis_info_clear() should be called.
+ *
+ * \param vi Pointer to an initialized \ref vorbis_info struct.
+ *
+ * \return Zero for success, and negative values for failure.
+ *
+ * \retval  0           Success.
+ * \retval  OV_EFAULT  Internal logic fault; indicates a bug or heap/stack corruption.
+ *
+ * \retval OV_EINVAL   Attempt to use vorbis_encode_setup_init() without first
+ * calling one of vorbis_encode_setup_managed() or vorbis_encode_setup_vbr() to
+ * initialize the high-level encoding setup
+ *
+ */
+extern int vorbis_encode_setup_init(vorbis_info *vi);
+
+/**
+ * This function implements a generic interface to miscellaneous encoder
+ * settings similar to the classic UNIX 'ioctl()' system call.  Applications
+ * may use vorbis_encode_ctl() to query or set bitrate management or quality
+ * mode details by using one of several \e request arguments detailed below.
+ * vorbis_encode_ctl() must be called after one of
+ * vorbis_encode_setup_managed() or vorbis_encode_setup_vbr().  When used
+ * to modify settings, \ref vorbis_encode_ctl() must be called before \ref
+ * vorbis_encode_setup_init().
+ *
+ * \param vi      Pointer to an initialized vorbis_info struct.
+ *
+ * \param number Specifies the desired action; See \ref encctlcodes "the list
+ * of available requests".
+ *
+ * \param arg void * pointing to a data structure matching the request
+ * argument.
+ *
+ * \retval 0          Success. Any further return information (such as the result of a
+ * query) is placed into the storage pointed to by *arg.
+ *
+ * \retval OV_EINVAL  Invalid argument, or an attempt to modify a setting after
+ * calling vorbis_encode_setup_init().
+ *
+ * \retval OV_EIMPL   Unimplemented or unknown request
+ */
+extern int vorbis_encode_ctl(vorbis_info *vi,int number,void *arg);
+
+/**
+ * \deprecated This is a deprecated interface. Please use vorbis_encode_ctl()
+ * with the \ref ovectl_ratemanage2_arg struct and \ref
+ * OV_ECTL_RATEMANAGE2_GET and \ref OV_ECTL_RATEMANAGE2_SET calls in new code.
+ *
+ * The \ref ovectl_ratemanage_arg structure is used with vorbis_encode_ctl()
+ * and the \ref OV_ECTL_RATEMANAGE_GET, \ref OV_ECTL_RATEMANAGE_SET, \ref
+ * OV_ECTL_RATEMANAGE_AVG, \ref OV_ECTL_RATEMANAGE_HARD calls in order to
+ * query and modify specifics of the encoder's bitrate management
+ * configuration.
+*/
+struct ovectl_ratemanage_arg {
+  int    management_active; /**< nonzero if bitrate management is active*/
+/** hard lower limit (in kilobits per second) below which the stream bitrate
+    will never be allowed for any given bitrate_hard_window seconds of time.*/
+  long   bitrate_hard_min;
+/** hard upper limit (in kilobits per second) above which the stream bitrate
+    will never be allowed for any given bitrate_hard_window seconds of time.*/
+  long   bitrate_hard_max;
+/** the window period (in seconds) used to regulate the hard bitrate minimum
+    and maximum*/
+  double bitrate_hard_window;
+/** soft lower limit (in kilobits per second) below which the average bitrate
+    tracker will start nudging the bitrate higher.*/
+  long   bitrate_av_lo;
+/** soft upper limit (in kilobits per second) above which the average bitrate
+    tracker will start nudging the bitrate lower.*/
+  long   bitrate_av_hi;
+/** the window period (in seconds) used to regulate the average bitrate
+    minimum and maximum.*/
+  double bitrate_av_window;
+/** Regulates the relative centering of the average and hard windows; in
+    libvorbis 1.0 and 1.0.1, the hard window regulation overlapped but
+    followed the average window regulation. In libvorbis 1.1 a bit-reservoir
+    interface replaces the old windowing interface; the older windowing
+    interface is simulated and this field has no effect.*/
+  double bitrate_av_window_center;
+};
+
+/**
+ * \name struct ovectl_ratemanage2_arg
+ *
+ * The ovectl_ratemanage2_arg structure is used with vorbis_encode_ctl() and
+ * the OV_ECTL_RATEMANAGE2_GET and OV_ECTL_RATEMANAGE2_SET calls in order to
+ * query and modify specifics of the encoder's bitrate management
+ * configuration.
+ *
+*/
+struct ovectl_ratemanage2_arg {
+  int    management_active; /**< nonzero if bitrate management is active */
+/** Lower allowed bitrate limit in kilobits per second */
+  long   bitrate_limit_min_kbps;
+/** Upper allowed bitrate limit in kilobits per second */
+  long   bitrate_limit_max_kbps;
+  long   bitrate_limit_reservoir_bits; /**<Size of the bitrate reservoir in bits */
+/** Regulates the bitrate reservoir's preferred fill level in a range from 0.0
+ * to 1.0; 0.0 tries to bank bits to buffer against future bitrate spikes, 1.0
+ * buffers against future sudden drops in instantaneous bitrate. Default is
+ * 0.1
+ */
+  double bitrate_limit_reservoir_bias;
+/** Average bitrate setting in kilobits per second */
+  long   bitrate_average_kbps;
+/** Slew rate limit setting for average bitrate adjustment; sets the minimum
+ *  time in seconds the bitrate tracker may swing from one extreme to the
+ *  other when boosting or damping average bitrate.
+ */
+  double bitrate_average_damping;
+};
+
+
+/**
+ * \name vorbis_encode_ctl() codes
+ *
+ * \anchor encctlcodes
+ *
+ * These values are passed as the \c number parameter of vorbis_encode_ctl().
+ * The type of the referent of that function's \c arg pointer depends on these
+ * codes.
+ */
+/*@{*/
+
+/**
+ * Query the current encoder bitrate management setting.
+ *
+ *Argument: <tt>struct ovectl_ratemanage2_arg *</tt>
+ *
+ * Used to query the current encoder bitrate management setting. Also used to
+ * initialize fields of an ovectl_ratemanage2_arg structure for use with
+ * \ref OV_ECTL_RATEMANAGE2_SET.
+ */
+#define OV_ECTL_RATEMANAGE2_GET      0x14
+
+/**
+ * Set the current encoder bitrate management settings.
+ *
+ * Argument: <tt>struct ovectl_ratemanage2_arg *</tt>
+ *
+ * Used to set the current encoder bitrate management settings to the values
+ * listed in the ovectl_ratemanage2_arg. Passing a NULL pointer will disable
+ * bitrate management.
+*/
+#define OV_ECTL_RATEMANAGE2_SET      0x15
+
+/**
+ * Returns the current encoder hard-lowpass setting (kHz) in the double
+ * pointed to by arg.
+ *
+ * Argument: <tt>double *</tt>
+*/
+#define OV_ECTL_LOWPASS_GET          0x20
+
+/**
+ *  Sets the encoder hard-lowpass to the value (kHz) pointed to by arg. Valid
+ *  lowpass settings range from 2 to 99.
+ *
+ * Argument: <tt>double *</tt>
+*/
+#define OV_ECTL_LOWPASS_SET          0x21
+
+/**
+ *  Returns the current encoder impulse block setting in the double pointed
+ *  to by arg.
+ *
+ * Argument: <tt>double *</tt>
+*/
+#define OV_ECTL_IBLOCK_GET           0x30
+
+/**
+ *  Sets the impulse block bias to the the value pointed to by arg.
+ *
+ * Argument: <tt>double *</tt>
+ *
+ *  Valid range is -15.0 to 0.0 [default]. A negative impulse block bias will
+ *  direct to encoder to use more bits when incoding short blocks that contain
+ *  strong impulses, thus improving the accuracy of impulse encoding.
+ */
+#define OV_ECTL_IBLOCK_SET           0x31
+
+/**
+ *  Returns the current encoder coupling setting in the int pointed
+ *  to by arg.
+ *
+ * Argument: <tt>int *</tt>
+*/
+#define OV_ECTL_COUPLING_GET         0x40
+
+/**
+ *  Enables/disables channel coupling in multichannel encoding according to arg.
+ *
+ * Argument: <tt>int *</tt>
+ *
+ *  Zero disables channel coupling for multichannel inputs, nonzer enables
+ *  channel coupling.  Setting has no effect on monophonic encoding or
+ *  multichannel counts that do not offer coupling.  At present, coupling is
+ *  available for stereo and 5.1 encoding.
+ */
+#define OV_ECTL_COUPLING_SET         0x41
+
+  /* deprecated rate management supported only for compatibility */
+
+/**
+ * Old interface to querying bitrate management settings.
+ *
+ * Deprecated after move to bit-reservoir style management in 1.1 rendered
+ * this interface partially obsolete.
+
+ * \deprecated Please use \ref OV_ECTL_RATEMANAGE2_GET instead.
+ *
+ * Argument: <tt>struct ovectl_ratemanage_arg *</tt>
+ */
+#define OV_ECTL_RATEMANAGE_GET       0x10
+/**
+ * Old interface to modifying bitrate management settings.
+ *
+ *  deprecated after move to bit-reservoir style management in 1.1 rendered
+ *  this interface partially obsolete.
+ *
+ * \deprecated Please use \ref OV_ECTL_RATEMANAGE2_SET instead.
+ *
+ * Argument: <tt>struct ovectl_ratemanage_arg *</tt>
+ */
+#define OV_ECTL_RATEMANAGE_SET       0x11
+/**
+ * Old interface to setting average-bitrate encoding mode.
+ *
+ * Deprecated after move to bit-reservoir style management in 1.1 rendered
+ * this interface partially obsolete.
+ *
+ *  \deprecated Please use \ref OV_ECTL_RATEMANAGE2_SET instead.
+ *
+ * Argument: <tt>struct ovectl_ratemanage_arg *</tt>
+ */
+#define OV_ECTL_RATEMANAGE_AVG       0x12
+/**
+ * Old interface to setting bounded-bitrate encoding modes.
+ *
+ * deprecated after move to bit-reservoir style management in 1.1 rendered
+ * this interface partially obsolete.
+ *
+ *  \deprecated Please use \ref OV_ECTL_RATEMANAGE2_SET instead.
+ *
+ * Argument: <tt>struct ovectl_ratemanage_arg *</tt>
+ */
+#define OV_ECTL_RATEMANAGE_HARD      0x13
+
+/*@}*/
+
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif
diff --git a/include/vorbis/vorbisfile.h b/include/vorbis/vorbisfile.h
new file mode 100644
index 0000000..5662611
--- /dev/null
+++ b/include/vorbis/vorbisfile.h
@@ -0,0 +1,205 @@
+/********************************************************************
+ *                                                                  *
+ * THIS FILE IS PART OF THE OggVorbis SOFTWARE CODEC SOURCE CODE.   *
+ * USE, DISTRIBUTION AND REPRODUCTION OF THIS LIBRARY SOURCE IS     *
+ * GOVERNED BY A BSD-STYLE SOURCE LICENSE INCLUDED WITH THIS SOURCE *
+ * IN 'COPYING'. PLEASE READ THESE TERMS BEFORE DISTRIBUTING.       *
+ *                                                                  *
+ * THE OggVorbis SOURCE CODE IS (C) COPYRIGHT 1994-2007             *
+ * by the Xiph.Org Foundation http://www.xiph.org/                  *
+ *                                                                  *
+ ********************************************************************
+
+ function: stdio-based convenience library for opening/seeking/decoding
+
+ ********************************************************************/
+
+#ifndef _OV_FILE_H_
+#define _OV_FILE_H_
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif /* __cplusplus */
+
+#include <stdio.h>
+#include "codec.h"
+
+/* The function prototypes for the callbacks are basically the same as for
+ * the stdio functions fread, fseek, fclose, ftell.
+ * The one difference is that the FILE * arguments have been replaced with
+ * a void * - this is to be used as a pointer to whatever internal data these
+ * functions might need. In the stdio case, it's just a FILE * cast to a void *
+ *
+ * If you use other functions, check the docs for these functions and return
+ * the right values. For seek_func(), you *MUST* return -1 if the stream is
+ * unseekable
+ */
+typedef struct {
+  size_t (*read_func)  (void *ptr, size_t size, size_t nmemb, void *datasource);
+  int    (*seek_func)  (void *datasource, ogg_int64_t offset, int whence);
+  int    (*close_func) (void *datasource);
+  long   (*tell_func)  (void *datasource);
+} ov_callbacks;
+
+#ifndef OV_EXCLUDE_STATIC_CALLBACKS
+
+/* a few sets of convenient callbacks, especially for use under
+ * Windows where ov_open_callbacks() should always be used instead of
+ * ov_open() to avoid problems with incompatible crt.o version linking
+ * issues. */
+
+static int _ov_header_fseek_wrap(FILE *f,ogg_int64_t off,int whence){
+  if(f==NULL)return(-1);
+
+#ifdef __MINGW32__
+  return fseeko64(f,off,whence);
+#elif defined (_WIN32)
+  return _fseeki64(f,off,whence);
+#else
+  return fseek(f,off,whence);
+#endif
+}
+
+/* These structs below (OV_CALLBACKS_DEFAULT etc) are defined here as
+ * static data. That means that every file which includes this header
+ * will get its own copy of these structs whether it uses them or
+ * not unless it #defines OV_EXCLUDE_STATIC_CALLBACKS.
+ * These static symbols are essential on platforms such as Windows on
+ * which several different versions of stdio support may be linked to
+ * by different DLLs, and we need to be certain we know which one
+ * we're using (the same one as the main application).
+ */
+
+static ov_callbacks OV_CALLBACKS_DEFAULT = {
+  (size_t (*)(void *, size_t, size_t, void *))  fread,
+  (int (*)(void *, ogg_int64_t, int))           _ov_header_fseek_wrap,
+  (int (*)(void *))                             fclose,
+  (long (*)(void *))                            ftell
+};
+
+static ov_callbacks OV_CALLBACKS_NOCLOSE = {
+  (size_t (*)(void *, size_t, size_t, void *))  fread,
+  (int (*)(void *, ogg_int64_t, int))           _ov_header_fseek_wrap,
+  (int (*)(void *))                             NULL,
+  (long (*)(void *))                            ftell
+};
+
+static ov_callbacks OV_CALLBACKS_STREAMONLY = {
+  (size_t (*)(void *, size_t, size_t, void *))  fread,
+  (int (*)(void *, ogg_int64_t, int))           NULL,
+  (int (*)(void *))                             fclose,
+  (long (*)(void *))                            NULL
+};
+
+static ov_callbacks OV_CALLBACKS_STREAMONLY_NOCLOSE = {
+  (size_t (*)(void *, size_t, size_t, void *))  fread,
+  (int (*)(void *, ogg_int64_t, int))           NULL,
+  (int (*)(void *))                             NULL,
+  (long (*)(void *))                            NULL
+};
+
+#endif
+
+#define  NOTOPEN   0
+#define  PARTOPEN  1
+#define  OPENED    2
+#define  STREAMSET 3
+#define  INITSET   4
+
+typedef struct OggVorbis_File {
+  void            *datasource; /* Pointer to a FILE *, etc. */
+  int              seekable;
+  ogg_int64_t      offset;
+  ogg_int64_t      end;
+  ogg_sync_state   oy;
+
+  /* If the FILE handle isn't seekable (eg, a pipe), only the current
+     stream appears */
+  int              links;
+  ogg_int64_t     *offsets;
+  ogg_int64_t     *dataoffsets;
+  long            *serialnos;
+  ogg_int64_t     *pcmlengths; /* overloaded to maintain binary
+                                  compatibility; x2 size, stores both
+                                  beginning and end values */
+  vorbis_info     *vi;
+  vorbis_comment  *vc;
+
+  /* Decoding working state local storage */
+  ogg_int64_t      pcm_offset;
+  int              ready_state;
+  long             current_serialno;
+  int              current_link;
+
+  double           bittrack;
+  double           samptrack;
+
+  ogg_stream_state os; /* take physical pages, weld into a logical
+                          stream of packets */
+  vorbis_dsp_state vd; /* central working state for the packet->PCM decoder */
+  vorbis_block     vb; /* local working space for packet->PCM decode */
+
+  ov_callbacks callbacks;
+
+} OggVorbis_File;
+
+
+extern int ov_clear(OggVorbis_File *vf);
+extern int ov_fopen(const char *path,OggVorbis_File *vf);
+extern int ov_open(FILE *f,OggVorbis_File *vf,const char *initial,long ibytes);
+extern int ov_open_callbacks(void *datasource, OggVorbis_File *vf,
+                const char *initial, long ibytes, ov_callbacks callbacks);
+
+extern int ov_test(FILE *f,OggVorbis_File *vf,const char *initial,long ibytes);
+extern int ov_test_callbacks(void *datasource, OggVorbis_File *vf,
+                const char *initial, long ibytes, ov_callbacks callbacks);
+extern int ov_test_open(OggVorbis_File *vf);
+
+extern long ov_bitrate(OggVorbis_File *vf,int i);
+extern long ov_bitrate_instant(OggVorbis_File *vf);
+extern long ov_streams(OggVorbis_File *vf);
+extern long ov_seekable(OggVorbis_File *vf);
+extern long ov_serialnumber(OggVorbis_File *vf,int i);
+
+extern ogg_int64_t ov_raw_total(OggVorbis_File *vf,int i);
+extern ogg_int64_t ov_pcm_total(OggVorbis_File *vf,int i);
+extern double ov_time_total(OggVorbis_File *vf,int i);
+
+extern int ov_raw_seek(OggVorbis_File *vf,ogg_int64_t pos);
+extern int ov_pcm_seek(OggVorbis_File *vf,ogg_int64_t pos);
+extern int ov_pcm_seek_page(OggVorbis_File *vf,ogg_int64_t pos);
+extern int ov_time_seek(OggVorbis_File *vf,double pos);
+extern int ov_time_seek_page(OggVorbis_File *vf,double pos);
+
+extern int ov_raw_seek_lap(OggVorbis_File *vf,ogg_int64_t pos);
+extern int ov_pcm_seek_lap(OggVorbis_File *vf,ogg_int64_t pos);
+extern int ov_pcm_seek_page_lap(OggVorbis_File *vf,ogg_int64_t pos);
+extern int ov_time_seek_lap(OggVorbis_File *vf,double pos);
+extern int ov_time_seek_page_lap(OggVorbis_File *vf,double pos);
+
+extern ogg_int64_t ov_raw_tell(OggVorbis_File *vf);
+extern ogg_int64_t ov_pcm_tell(OggVorbis_File *vf);
+extern double ov_time_tell(OggVorbis_File *vf);
+
+extern vorbis_info *ov_info(OggVorbis_File *vf,int link);
+extern vorbis_comment *ov_comment(OggVorbis_File *vf,int link);
+
+extern long ov_read_float(OggVorbis_File *vf,float ***pcm_channels,int samples,
+                          int *bitstream);
+extern long ov_read_filter(OggVorbis_File *vf,char *buffer,int length,
+                          int bigendianp,int word,int sgned,int *bitstream,
+                          void (*filter)(float **pcm,long channels,long samples,void *filter_param),void *filter_param);
+extern long ov_read(OggVorbis_File *vf,char *buffer,int length,
+                    int bigendianp,int word,int sgned,int *bitstream);
+extern int ov_crosslap(OggVorbis_File *vf1,OggVorbis_File *vf2);
+
+extern int ov_halfrate(OggVorbis_File *vf,int flag);
+extern int ov_halfrate_p(OggVorbis_File *vf);
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif
+