mirror of
https://github.com/ZDoom/raze-gles.git
synced 2024-12-30 21:31:03 +00:00
1cc9d13ccf
Files moved but not modified. Changes to follow in a subsequent commit. You down with CPP? git-svn-id: https://svn.eduke32.com/eduke32@6055 1a8010ca-5511-0410-912e-c29ae57300e0
371 lines
16 KiB
C
371 lines
16 KiB
C
/* libFLAC - Free Lossless Audio Codec library
|
|
* Copyright (C) 2000-2009 Josh Coalson
|
|
* Copyright (C) 2011-2013 Xiph.Org Foundation
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* - Neither the name of the Xiph.org Foundation nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR
|
|
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
|
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef FLAC__ALL_H
|
|
#define FLAC__ALL_H
|
|
|
|
#include "export.h"
|
|
|
|
#include "assert.h"
|
|
#include "callback.h"
|
|
#include "format.h"
|
|
#include "metadata.h"
|
|
#include "ordinals.h"
|
|
#include "stream_decoder.h"
|
|
#include "stream_encoder.h"
|
|
|
|
/** \mainpage
|
|
*
|
|
* \section intro Introduction
|
|
*
|
|
* This is the documentation for the FLAC C and C++ APIs. It is
|
|
* highly interconnected; this introduction should give you a top
|
|
* level idea of the structure and how to find the information you
|
|
* need. As a prerequisite you should have at least a basic
|
|
* knowledge of the FLAC format, documented
|
|
* <A HREF="../format.html">here</A>.
|
|
*
|
|
* \section c_api FLAC C API
|
|
*
|
|
* The FLAC C API is the interface to libFLAC, a set of structures
|
|
* describing the components of FLAC streams, and functions for
|
|
* encoding and decoding streams, as well as manipulating FLAC
|
|
* metadata in files. The public include files will be installed
|
|
* in your include area (for example /usr/include/FLAC/...).
|
|
*
|
|
* By writing a little code and linking against libFLAC, it is
|
|
* relatively easy to add FLAC support to another program. The
|
|
* library is licensed under <A HREF="../license.html">Xiph's BSD license</A>.
|
|
* Complete source code of libFLAC as well as the command-line
|
|
* encoder and plugins is available and is a useful source of
|
|
* examples.
|
|
*
|
|
* Aside from encoders and decoders, libFLAC provides a powerful
|
|
* metadata interface for manipulating metadata in FLAC files. It
|
|
* allows the user to add, delete, and modify FLAC metadata blocks
|
|
* and it can automatically take advantage of PADDING blocks to avoid
|
|
* rewriting the entire FLAC file when changing the size of the
|
|
* metadata.
|
|
*
|
|
* libFLAC usually only requires the standard C library and C math
|
|
* library. In particular, threading is not used so there is no
|
|
* dependency on a thread library. However, libFLAC does not use
|
|
* global variables and should be thread-safe.
|
|
*
|
|
* libFLAC also supports encoding to and decoding from Ogg FLAC.
|
|
* However the metadata editing interfaces currently have limited
|
|
* read-only support for Ogg FLAC files.
|
|
*
|
|
* \section cpp_api FLAC C++ API
|
|
*
|
|
* The FLAC C++ API is a set of classes that encapsulate the
|
|
* structures and functions in libFLAC. They provide slightly more
|
|
* functionality with respect to metadata but are otherwise
|
|
* equivalent. For the most part, they share the same usage as
|
|
* their counterparts in libFLAC, and the FLAC C API documentation
|
|
* can be used as a supplement. The public include files
|
|
* for the C++ API will be installed in your include area (for
|
|
* example /usr/include/FLAC++/...).
|
|
*
|
|
* libFLAC++ is also licensed under
|
|
* <A HREF="../license.html">Xiph's BSD license</A>.
|
|
*
|
|
* \section getting_started Getting Started
|
|
*
|
|
* A good starting point for learning the API is to browse through
|
|
* the <A HREF="modules.html">modules</A>. Modules are logical
|
|
* groupings of related functions or classes, which correspond roughly
|
|
* to header files or sections of header files. Each module includes a
|
|
* detailed description of the general usage of its functions or
|
|
* classes.
|
|
*
|
|
* From there you can go on to look at the documentation of
|
|
* individual functions. You can see different views of the individual
|
|
* functions through the links in top bar across this page.
|
|
*
|
|
* If you prefer a more hands-on approach, you can jump right to some
|
|
* <A HREF="../documentation_example_code.html">example code</A>.
|
|
*
|
|
* \section porting_guide Porting Guide
|
|
*
|
|
* Starting with FLAC 1.1.3 a \link porting Porting Guide \endlink
|
|
* has been introduced which gives detailed instructions on how to
|
|
* port your code to newer versions of FLAC.
|
|
*
|
|
* \section embedded_developers Embedded Developers
|
|
*
|
|
* libFLAC has grown larger over time as more functionality has been
|
|
* included, but much of it may be unnecessary for a particular embedded
|
|
* implementation. Unused parts may be pruned by some simple editing of
|
|
* src/libFLAC/Makefile.am. In general, the decoders, encoders, and
|
|
* metadata interface are all independent from each other.
|
|
*
|
|
* It is easiest to just describe the dependencies:
|
|
*
|
|
* - All modules depend on the \link flac_format Format \endlink module.
|
|
* - The decoders and encoders depend on the bitbuffer.
|
|
* - The decoder is independent of the encoder. The encoder uses the
|
|
* decoder because of the verify feature, but this can be removed if
|
|
* not needed.
|
|
* - Parts of the metadata interface require the stream decoder (but not
|
|
* the encoder).
|
|
* - Ogg support is selectable through the compile time macro
|
|
* \c FLAC__HAS_OGG.
|
|
*
|
|
* For example, if your application only requires the stream decoder, no
|
|
* encoder, and no metadata interface, you can remove the stream encoder
|
|
* and the metadata interface, which will greatly reduce the size of the
|
|
* library.
|
|
*
|
|
* Also, there are several places in the libFLAC code with comments marked
|
|
* with "OPT:" where a #define can be changed to enable code that might be
|
|
* faster on a specific platform. Experimenting with these can yield faster
|
|
* binaries.
|
|
*/
|
|
|
|
/** \defgroup porting Porting Guide for New Versions
|
|
*
|
|
* This module describes differences in the library interfaces from
|
|
* version to version. It assists in the porting of code that uses
|
|
* the libraries to newer versions of FLAC.
|
|
*
|
|
* One simple facility for making porting easier that has been added
|
|
* in FLAC 1.1.3 is a set of \c #defines in \c export.h of each
|
|
* library's includes (e.g. \c include/FLAC/export.h). The
|
|
* \c #defines mirror the libraries'
|
|
* <A HREF="http://www.gnu.org/software/libtool/manual/libtool.html#Libtool-versioning">libtool version numbers</A>,
|
|
* e.g. in libFLAC there are \c FLAC_API_VERSION_CURRENT,
|
|
* \c FLAC_API_VERSION_REVISION, and \c FLAC_API_VERSION_AGE.
|
|
* These can be used to support multiple versions of an API during the
|
|
* transition phase, e.g.
|
|
*
|
|
* \code
|
|
* #if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7
|
|
* legacy code
|
|
* #else
|
|
* new code
|
|
* #endif
|
|
* \endcode
|
|
*
|
|
* The the source will work for multiple versions and the legacy code can
|
|
* easily be removed when the transition is complete.
|
|
*
|
|
* Another available symbol is FLAC_API_SUPPORTS_OGG_FLAC (defined in
|
|
* include/FLAC/export.h), which can be used to determine whether or not
|
|
* the library has been compiled with support for Ogg FLAC. This is
|
|
* simpler than trying to call an Ogg init function and catching the
|
|
* error.
|
|
*/
|
|
|
|
/** \defgroup porting_1_1_2_to_1_1_3 Porting from FLAC 1.1.2 to 1.1.3
|
|
* \ingroup porting
|
|
*
|
|
* \brief
|
|
* This module describes porting from FLAC 1.1.2 to FLAC 1.1.3.
|
|
*
|
|
* The main change between the APIs in 1.1.2 and 1.1.3 is that they have
|
|
* been simplified. First, libOggFLAC has been merged into libFLAC and
|
|
* libOggFLAC++ has been merged into libFLAC++. Second, both the three
|
|
* decoding layers and three encoding layers have been merged into a
|
|
* single stream decoder and stream encoder. That is, the functionality
|
|
* of FLAC__SeekableStreamDecoder and FLAC__FileDecoder has been merged
|
|
* into FLAC__StreamDecoder, and FLAC__SeekableStreamEncoder and
|
|
* FLAC__FileEncoder into FLAC__StreamEncoder. Only the
|
|
* FLAC__StreamDecoder and FLAC__StreamEncoder remain. What this means
|
|
* is there is now a single API that can be used to encode or decode
|
|
* streams to/from native FLAC or Ogg FLAC and the single API can work
|
|
* on both seekable and non-seekable streams.
|
|
*
|
|
* Instead of creating an encoder or decoder of a certain layer, now the
|
|
* client will always create a FLAC__StreamEncoder or
|
|
* FLAC__StreamDecoder. The old layers are now differentiated by the
|
|
* initialization function. For example, for the decoder,
|
|
* FLAC__stream_decoder_init() has been replaced by
|
|
* FLAC__stream_decoder_init_stream(). This init function takes
|
|
* callbacks for the I/O, and the seeking callbacks are optional. This
|
|
* allows the client to use the same object for seekable and
|
|
* non-seekable streams. For decoding a FLAC file directly, the client
|
|
* can use FLAC__stream_decoder_init_file() and pass just a filename
|
|
* and fewer callbacks; most of the other callbacks are supplied
|
|
* internally. For situations where fopen()ing by filename is not
|
|
* possible (e.g. Unicode filenames on Windows) the client can instead
|
|
* open the file itself and supply the FILE* to
|
|
* FLAC__stream_decoder_init_FILE(). The init functions now returns a
|
|
* FLAC__StreamDecoderInitStatus instead of FLAC__StreamDecoderState.
|
|
* Since the callbacks and client data are now passed to the init
|
|
* function, the FLAC__stream_decoder_set_*_callback() functions and
|
|
* FLAC__stream_decoder_set_client_data() are no longer needed. The
|
|
* rest of the calls to the decoder are the same as before.
|
|
*
|
|
* There are counterpart init functions for Ogg FLAC, e.g.
|
|
* FLAC__stream_decoder_init_ogg_stream(). All the rest of the calls
|
|
* and callbacks are the same as for native FLAC.
|
|
*
|
|
* As an example, in FLAC 1.1.2 a seekable stream decoder would have
|
|
* been set up like so:
|
|
*
|
|
* \code
|
|
* FLAC__SeekableStreamDecoder *decoder = FLAC__seekable_stream_decoder_new();
|
|
* if(decoder == NULL) do_something;
|
|
* FLAC__seekable_stream_decoder_set_md5_checking(decoder, true);
|
|
* [... other settings ...]
|
|
* FLAC__seekable_stream_decoder_set_read_callback(decoder, my_read_callback);
|
|
* FLAC__seekable_stream_decoder_set_seek_callback(decoder, my_seek_callback);
|
|
* FLAC__seekable_stream_decoder_set_tell_callback(decoder, my_tell_callback);
|
|
* FLAC__seekable_stream_decoder_set_length_callback(decoder, my_length_callback);
|
|
* FLAC__seekable_stream_decoder_set_eof_callback(decoder, my_eof_callback);
|
|
* FLAC__seekable_stream_decoder_set_write_callback(decoder, my_write_callback);
|
|
* FLAC__seekable_stream_decoder_set_metadata_callback(decoder, my_metadata_callback);
|
|
* FLAC__seekable_stream_decoder_set_error_callback(decoder, my_error_callback);
|
|
* FLAC__seekable_stream_decoder_set_client_data(decoder, my_client_data);
|
|
* if(FLAC__seekable_stream_decoder_init(decoder) != FLAC__SEEKABLE_STREAM_DECODER_OK) do_something;
|
|
* \endcode
|
|
*
|
|
* In FLAC 1.1.3 it is like this:
|
|
*
|
|
* \code
|
|
* FLAC__StreamDecoder *decoder = FLAC__stream_decoder_new();
|
|
* if(decoder == NULL) do_something;
|
|
* FLAC__stream_decoder_set_md5_checking(decoder, true);
|
|
* [... other settings ...]
|
|
* if(FLAC__stream_decoder_init_stream(
|
|
* decoder,
|
|
* my_read_callback,
|
|
* my_seek_callback, // or NULL
|
|
* my_tell_callback, // or NULL
|
|
* my_length_callback, // or NULL
|
|
* my_eof_callback, // or NULL
|
|
* my_write_callback,
|
|
* my_metadata_callback, // or NULL
|
|
* my_error_callback,
|
|
* my_client_data
|
|
* ) != FLAC__STREAM_DECODER_INIT_STATUS_OK) do_something;
|
|
* \endcode
|
|
*
|
|
* or you could do;
|
|
*
|
|
* \code
|
|
* [...]
|
|
* FILE *file = fopen("somefile.flac","rb");
|
|
* if(file == NULL) do_somthing;
|
|
* if(FLAC__stream_decoder_init_FILE(
|
|
* decoder,
|
|
* file,
|
|
* my_write_callback,
|
|
* my_metadata_callback, // or NULL
|
|
* my_error_callback,
|
|
* my_client_data
|
|
* ) != FLAC__STREAM_DECODER_INIT_STATUS_OK) do_something;
|
|
* \endcode
|
|
*
|
|
* or just:
|
|
*
|
|
* \code
|
|
* [...]
|
|
* if(FLAC__stream_decoder_init_file(
|
|
* decoder,
|
|
* "somefile.flac",
|
|
* my_write_callback,
|
|
* my_metadata_callback, // or NULL
|
|
* my_error_callback,
|
|
* my_client_data
|
|
* ) != FLAC__STREAM_DECODER_INIT_STATUS_OK) do_something;
|
|
* \endcode
|
|
*
|
|
* Another small change to the decoder is in how it handles unparseable
|
|
* streams. Before, when the decoder found an unparseable stream
|
|
* (reserved for when the decoder encounters a stream from a future
|
|
* encoder that it can't parse), it changed the state to
|
|
* \c FLAC__STREAM_DECODER_UNPARSEABLE_STREAM. Now the decoder instead
|
|
* drops sync and calls the error callback with a new error code
|
|
* \c FLAC__STREAM_DECODER_ERROR_STATUS_UNPARSEABLE_STREAM. This is
|
|
* more robust. If your error callback does not discriminate on the the
|
|
* error state, your code does not need to be changed.
|
|
*
|
|
* The encoder now has a new setting:
|
|
* FLAC__stream_encoder_set_apodization(). This is for setting the
|
|
* method used to window the data before LPC analysis. You only need to
|
|
* add a call to this function if the default is not suitable. There
|
|
* are also two new convenience functions that may be useful:
|
|
* FLAC__metadata_object_cuesheet_calculate_cddb_id() and
|
|
* FLAC__metadata_get_cuesheet().
|
|
*
|
|
* The \a bytes parameter to FLAC__StreamDecoderReadCallback,
|
|
* FLAC__StreamEncoderReadCallback, and FLAC__StreamEncoderWriteCallback
|
|
* is now \c size_t instead of \c unsigned.
|
|
*/
|
|
|
|
/** \defgroup porting_1_1_3_to_1_1_4 Porting from FLAC 1.1.3 to 1.1.4
|
|
* \ingroup porting
|
|
*
|
|
* \brief
|
|
* This module describes porting from FLAC 1.1.3 to FLAC 1.1.4.
|
|
*
|
|
* There were no changes to any of the interfaces from 1.1.3 to 1.1.4.
|
|
* There was a slight change in the implementation of
|
|
* FLAC__stream_encoder_set_metadata(); the function now makes a copy
|
|
* of the \a metadata array of pointers so the client no longer needs
|
|
* to maintain it after the call. The objects themselves that are
|
|
* pointed to by the array are still not copied though and must be
|
|
* maintained until the call to FLAC__stream_encoder_finish().
|
|
*/
|
|
|
|
/** \defgroup porting_1_1_4_to_1_2_0 Porting from FLAC 1.1.4 to 1.2.0
|
|
* \ingroup porting
|
|
*
|
|
* \brief
|
|
* This module describes porting from FLAC 1.1.4 to FLAC 1.2.0.
|
|
*
|
|
* There were only very minor changes to the interfaces from 1.1.4 to 1.2.0.
|
|
* In libFLAC, \c FLAC__format_sample_rate_is_subset() was added.
|
|
* In libFLAC++, \c FLAC::Decoder::Stream::get_decode_position() was added.
|
|
*
|
|
* Finally, value of the constant \c FLAC__FRAME_HEADER_RESERVED_LEN
|
|
* has changed to reflect the conversion of one of the reserved bits
|
|
* into active use. It used to be \c 2 and now is \c 1. However the
|
|
* FLAC frame header length has not changed, so to skip the proper
|
|
* number of bits, use \c FLAC__FRAME_HEADER_RESERVED_LEN +
|
|
* \c FLAC__FRAME_HEADER_BLOCKING_STRATEGY_LEN
|
|
*/
|
|
|
|
/** \defgroup flac FLAC C API
|
|
*
|
|
* The FLAC C API is the interface to libFLAC, a set of structures
|
|
* describing the components of FLAC streams, and functions for
|
|
* encoding and decoding streams, as well as manipulating FLAC
|
|
* metadata in files.
|
|
*
|
|
* You should start with the format components as all other modules
|
|
* are dependent on it.
|
|
*/
|
|
|
|
#endif
|