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remove_deprecated_ffmpeg_api
Alexandros Theodotou 3 years ago
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a9c8d1e3ea
Signed by: alex
GPG Key ID: 022EAE42313D70F3
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  1. 85
      .gitignore
  2. 165
      COPYING
  3. 21
      README
  4. 135
      inc/ad.h
  5. 64
      inc/ad_plugin.h
  6. 95
      inc/ffcompat.h
  7. 18
      inc/meson.build
  8. 148
      meson.build
  9. 22
      meson_options.txt
  10. 389
      src/ad_ffmpeg.c
  11. 176
      src/ad_plugin.c
  12. 155
      src/ad_soundfile.c
  13. 22
      src/meson.build

85
.gitignore vendored
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# Copyright (C) 2019 Alexandros Theodotou <alex at zrythm dot org>
#
# This file is part of libaudec
#
# libaudec is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# libaudec is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with libaudec. If not, see <https://www.gnu.org/licenses/>.
# Build files
build
builddir
_build
# -- C++
# Prerequisites
*.d
# Compiled Object files
*.slo
*.lo
*.o
*.obj
**/*/*.so*
# Precompiled Headers
*.gch
*.pch
# Compiled Dynamic libraries
*.so
*.dylib
build/*.dll
# Fortran module files
*.mod
*.smod
# Compiled Static libraries
*.lai
*.la
*.a
*.lib
# Executables
*.exe
*.out
*.app
# -- Vim
# Swap
[._]*.s[a-v][a-z]
[._]*.sw[a-p]
[._]s[a-rt-v][a-z]
[._]ss[a-gi-z]
[._]sw[a-p]
.vimrc
# Session
Session.vim
# Temporary
.netrwhist
*~
*.ui#
**/.deps
# Auto-generated tag files
tags
# Persistent undo
[._]*.un~
# Backup files
*.bak
# Valgrind
vgcore.*

165
COPYING
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GNU LESSER GENERAL PUBLIC LICENSE
Version 3, 29 June 2007
Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
Everyone is permitted to copy and distribute verbatim copies
of this license document, but changing it is not allowed.
This version of the GNU Lesser General Public License incorporates
the terms and conditions of version 3 of the GNU General Public
License, supplemented by the additional permissions listed below.
0. Additional Definitions.
As used herein, "this License" refers to version 3 of the GNU Lesser
General Public License, and the "GNU GPL" refers to version 3 of the GNU
General Public License.
"The Library" refers to a covered work governed by this License,
other than an Application or a Combined Work as defined below.
An "Application" is any work that makes use of an interface provided
by the Library, but which is not otherwise based on the Library.
Defining a subclass of a class defined by the Library is deemed a mode
of using an interface provided by the Library.
A "Combined Work" is a work produced by combining or linking an
Application with the Library. The particular version of the Library
with which the Combined Work was made is also called the "Linked
Version".
The "Minimal Corresponding Source" for a Combined Work means the
Corresponding Source for the Combined Work, excluding any source code
for portions of the Combined Work that, considered in isolation, are
based on the Application, and not on the Linked Version.
The "Corresponding Application Code" for a Combined Work means the
object code and/or source code for the Application, including any data
and utility programs needed for reproducing the Combined Work from the
Application, but excluding the System Libraries of the Combined Work.
1. Exception to Section 3 of the GNU GPL.
You may convey a covered work under sections 3 and 4 of this License
without being bound by section 3 of the GNU GPL.
2. Conveying Modified Versions.
If you modify a copy of the Library, and, in your modifications, a
facility refers to a function or data to be supplied by an Application
that uses the facility (other than as an argument passed when the
facility is invoked), then you may convey a copy of the modified
version:
a) under this License, provided that you make a good faith effort to
ensure that, in the event an Application does not supply the
function or data, the facility still operates, and performs
whatever part of its purpose remains meaningful, or
b) under the GNU GPL, with none of the additional permissions of
this License applicable to that copy.
3. Object Code Incorporating Material from Library Header Files.
The object code form of an Application may incorporate material from
a header file that is part of the Library. You may convey such object
code under terms of your choice, provided that, if the incorporated
material is not limited to numerical parameters, data structure
layouts and accessors, or small macros, inline functions and templates
(ten or fewer lines in length), you do both of the following:
a) Give prominent notice with each copy of the object code that the
Library is used in it and that the Library and its use are
covered by this License.
b) Accompany the object code with a copy of the GNU GPL and this license
document.
4. Combined Works.
You may convey a Combined Work under terms of your choice that,
taken together, effectively do not restrict modification of the
portions of the Library contained in the Combined Work and reverse
engineering for debugging such modifications, if you also do each of
the following:
a) Give prominent notice with each copy of the Combined Work that
the Library is used in it and that the Library and its use are
covered by this License.
b) Accompany the Combined Work with a copy of the GNU GPL and this license
document.
c) For a Combined Work that displays copyright notices during
execution, include the copyright notice for the Library among
these notices, as well as a reference directing the user to the
copies of the GNU GPL and this license document.
d) Do one of the following:
0) Convey the Minimal Corresponding Source under the terms of this
License, and the Corresponding Application Code in a form
suitable for, and under terms that permit, the user to
recombine or relink the Application with a modified version of
the Linked Version to produce a modified Combined Work, in the
manner specified by section 6 of the GNU GPL for conveying
Corresponding Source.
1) Use a suitable shared library mechanism for linking with the
Library. A suitable mechanism is one that (a) uses at run time
a copy of the Library already present on the user's computer
system, and (b) will operate properly with a modified version
of the Library that is interface-compatible with the Linked
Version.
e) Provide Installation Information, but only if you would otherwise
be required to provide such information under section 6 of the
GNU GPL, and only to the extent that such information is
necessary to install and execute a modified version of the
Combined Work produced by recombining or relinking the
Application with a modified version of the Linked Version. (If
you use option 4d0, the Installation Information must accompany
the Minimal Corresponding Source and Corresponding Application
Code. If you use option 4d1, you must provide the Installation
Information in the manner specified by section 6 of the GNU GPL
for conveying Corresponding Source.)
5. Combined Libraries.
You may place library facilities that are a work based on the
Library side by side in a single library together with other library
facilities that are not Applications and are not covered by this
License, and convey such a combined library under terms of your
choice, if you do both of the following:
a) Accompany the combined library with a copy of the same work based
on the Library, uncombined with any other library facilities,
conveyed under the terms of this License.
b) Give prominent notice with the combined library that part of it
is a work based on the Library, and explaining where to find the
accompanying uncombined form of the same work.
6. Revised Versions of the GNU Lesser General Public License.
The Free Software Foundation may publish revised and/or new versions
of the GNU Lesser General Public License from time to time. Such new
versions will be similar in spirit to the present version, but may
differ in detail to address new problems or concerns.
Each version is given a distinguishing version number. If the
Library as you received it specifies that a certain numbered version
of the GNU Lesser General Public License "or any later version"
applies to it, you have the option of following the terms and
conditions either of that published version or of any later version
published by the Free Software Foundation. If the Library as you
received it does not specify a version number of the GNU Lesser
General Public License, you may choose any version of the GNU Lesser
General Public License ever published by the Free Software Foundation.
If the Library as you received it specifies that a proxy can decide
whether future versions of the GNU Lesser General Public License shall
apply, that proxy's public statement of acceptance of any version is
permanent authorization for you to choose that version for the
Library.

21
README
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libaudec
========
# Overview
libaudec (lib audio decoder) is a wrapper library over
ffmpeg, sndfile and libsamplerate for reading and
resampling audio files, based on Robin Gareus' `audio_decoder`
code (https://github.com/x42/silan/tree/master/audio_decoder)
# License
libaudec is released under the GNU LGPLv3+. See the
file COPYING for more details. Some files, where
specified, are licensed under different licenses.
----
Copyright (C) 2019 Alexandros Theodotou
Copying and distribution of this file, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. This file is offered as-is,
without any warranty.

135
inc/ad.h
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/**
@brief audio-decoder - wrapper around libsndfile and libav*
@file ad.h
@author Robin Gareus <robin@gareus.org>
Copyright (C) 2011-2013 Robin Gareus <robin@gareus.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser Public License as published by
the Free Software Foundation; either version 2.1, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __AD_H__
#define __AD_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <unistd.h>
#include <stdint.h>
struct adinfo {
unsigned int sample_rate;
unsigned int channels;
int64_t length; //milliseconds
int64_t frames; //total number of frames (eg a frame for 16bit stereo is 4 bytes).
int bit_rate;
int bit_depth;
char * meta_data;
};
/* global init function - register codecs */
void ad_init();
/* --- public API --- */
/** open an audio file
* @param fn file-name
* @param nfo pointer to a adinfo struct which will hold information about the file.
* @return NULL on error, a pointer to an opaque soundfile-decoder object on success.
*/
void * ad_open (const char *fn, struct adinfo *nfo);
/** close an audio file and release decoder structures
* @param sf decoder handle
* @return 0 on succees, -1 if sf was invalid or not open (return value can usually be ignored)
*/
int ad_close (void *sf);
/** seel to a given position in the file
* @param sf decoder handle
* @param pos frame position to seek to in frames (1 frame = number-of-channel samples) from the start of the file.
* @return the current position in frames (multi-channel samples) from the start of the file. On error this function returns -1.
*/
int64_t ad_seek (void *sf, int64_t pos);
/** decode audio data chunk to raw interleaved channel floating point data
*
* @param sf decoder handle
* @param out place to store data -- must be large enough to hold (sizeof(float) * len) bytes.
* @param len number of samples (!) to read (should be a multiple of nfo->channels).
* @return the number of read samples.
*/
ssize_t ad_read (void *sf, float* out, size_t len);
/** re-read the file information and meta-data.
*
* this is not neccesary in general \ref ad_open includes an inplicit call
* but meta-data may change in live-stream in which case en explicit call to
* ad_into is needed to update the inforation
*
* @param fn file-name
* @param nfo pointer to a adinfo struct which will hold information about the file.
* @return 0 on succees, -1 if sf was invalid or not open
*/
int ad_info (void *sf, struct adinfo *nfo);
/** zero initialize the information struct. * (does not free nfo->meta_data)
* @param nfo pointer to a adinfo struct
*/
void ad_clear_nfo (struct adinfo *nfo);
/** free possibly allocated meta-data text
* @param nfo pointer to a adinfo struct
*/
void ad_free_nfo (struct adinfo *nfo);
/* --- helper functions --- */
/** read file info
* combines ad_open() and ad_close()
*/
int ad_finfo (const char *, struct adinfo *);
/**
* wrapper around \ref ad_read, downmixes all channels to mono
*/
ssize_t ad_read_mono_dbl (void *, struct adinfo *, double*, size_t);
/**
* calls dbg() to print file info to stderr.
*
* @param dbglvl
* @param nfo
*/
void ad_dump_nfo (int dbglvl, struct adinfo *nfo);
/** set audio-decoder debug level -- all info is printed to stderr.
*
* @param lvl debug-level threshold
* -1: absolutley silent
* 0: errors only
* 1: errors + info
* 2: + debug
* 3: + low-level-debug info
*/
void ad_set_debuglevel(int lvl);
#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */
#endif

64
inc/ad_plugin.h
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/**
Copyright (C) 2011-2013 Robin Gareus <robin@gareus.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser Public License as published by
the Free Software Foundation; either version 2.1, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef __AD_PLUGIN_H__
#define __AD_PLUGIN_H__
#include <stdint.h>
#include "ad.h"
#define dbg(A, B, ...) ad_debug_printf(__func__, A, B, ##__VA_ARGS__)
#ifndef __PRI64_PREFIX
#if (defined __X86_64__ || defined __LP64__)
# define __PRI64_PREFIX "l"
#else
# define __PRI64_PREFIX "ll"
#endif
#endif
#ifndef PRIu64
# define PRIu64 __PRI64_PREFIX "u"
#endif
#ifndef PRIi64
# define PRIi64 __PRI64_PREFIX "i"
#endif
extern int ad_debug_level;
void ad_debug_printf(const char* func, int level, const char* format, ...);
typedef struct {
int (*eval)(const char *);
void * (*open)(const char *, struct adinfo *);
int (*close)(void *);
int (*info)(void *, struct adinfo *);
int64_t (*seek)(void *, int64_t);
ssize_t (*read)(void *, float *, size_t);
} ad_plugin;
int ad_eval_null(const char *);
void * ad_open_null(const char *, struct adinfo *);
int ad_close_null(void *);
int ad_info_null(void *, struct adinfo *);
int64_t ad_seek_null(void *, int64_t);
ssize_t ad_read_null(void *, float*, size_t);
/* hardcoded backends */
const ad_plugin * adp_get_sndfile();
const ad_plugin * adp_get_ffmpeg();
#endif

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inc/ffcompat.h
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/* ffmpeg compatibility wrappers
*
* Copyright 2012,2013 Robin Gareus <robin@gareus.org>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* 2. 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.
*
* 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 COPYRIGHT OWNER 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 FFCOMPAT_H
#define FFCOMPAT_H
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#include <libavutil/avutil.h>
#ifndef AVCODEC_MAX_AUDIO_FRAME_SIZE
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 192000
#endif
#if LIBAVUTIL_VERSION_INT < AV_VERSION_INT(50, 0, 0)
#define AVMEDIA_TYPE_AUDIO CODEC_TYPE_AUDIO
#endif
#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53, 2, 0)
static inline int avformat_open_input(AVFormatContext **ps, const char *filename, void *fmt, void **options)
{
return av_open_input_file(ps, filename, NULL, 0, NULL);
}
#endif /* avformat < 53.2.0 */
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(53, 5, 0)
static inline AVCodecContext *
avcodec_alloc_context3(AVCodec *codec __attribute__((unused)))
{
return avcodec_alloc_context();
}
static inline AVStream *
avformat_new_stream(AVFormatContext *s, AVCodec *c) {
return av_new_stream(s,0);
}
static inline int
avcodec_get_context_defaults3(AVCodecContext *s, AVCodec *codec)
{
avcodec_get_context_defaults(s);
return 0;
}
#endif /* < 53.5.0 */
#if LIBAVCODEC_VERSION_INT < AV_VERSION_INT(53, 5, 6)
static inline int
avcodec_open2(AVCodecContext *avctx, AVCodec *codec, void **options __attribute__((unused)))
{
return avcodec_open(avctx, codec);
}
#endif /* <= 53.5.6 */
#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53, 5, 0)
static inline int
avformat_find_stream_info(AVFormatContext *ic, void **options)
{
return av_find_stream_info(ic);
}
static inline void
avformat_close_input(AVFormatContext **s)
{
av_close_input_file(*s);
}
#endif /* < 53.5.0 */
#endif /* FFCOMPAT_H */

18
inc/meson.build
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# Copyright (C) 2019 Alexandros Theodotou <alex at zrythm dot org>
#
# This file is part of libaudec
#
# libaudec is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# libaudec is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with libaudec. If not, see <https://www.gnu.org/licenses/>.
install_headers('ad.h', subdir : 'audec')

148
meson.build
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# Copyright (C) 2019 Alexandros Theodotou <alex at zrythm dot org>
#
# This file is part of libaudec
#
# libaudec is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# libaudec is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with libaudec. If not, see <https://www.gnu.org/licenses/>.
project (
'libaudec', ['c'],
version: '0.1.0',
license: 'LGPLv3+',
meson_version: '>= 0.46.0',
default_options: [
'warning_level=1',
'buildtype=debug',
'c_std=gnu11',
],
)
srcs = []
subdir('inc')
subdir('src')
cc = meson.get_compiler ('c')
prefix = get_option ('prefix')
includedir = join_paths (
prefix, get_option('includedir'))
libdir = join_paths (prefix, get_option ('libdir'))
cdata = configuration_data ()
cdata.set_quoted (
'PACKAGE_VERSION',
'@VCS_TAG@')
cdata.set_quoted (
'COMPILER',
meson.get_compiler('c').get_id())
cdata.set_quoted (
'PREFIX', prefix)
cdata.set_quoted (
'COMPILER_VERSION',
meson.get_compiler('c').version())
cdata.set_quoted (
'CONFIGURE_LIBDIR',
libdir)
# detect OS
os_darwin = false
os_linux = false
os_freebsd = false
if host_machine.system() == 'darwin'
os_darwin = true
elif host_machine.system() == 'linux'
os_linux = true
elif host_machine.system() == 'freebsd'
os_freebsd = true
endif
inc = [
include_directories ('.'),
include_directories ('inc'),
]
# Compiler flags
audec_cflags = [
'-Wall',
'-Wformat=2',
'-Wno-missing-field-initializers',
'-Wno-unused-parameter',
'-Wno-sequence-point',
'-Wignored-qualifiers',
'-Wno-cast-function-type',
]
audec_cflags = cc.get_supported_arguments (
audec_cflags)
audec_deps = []
if (get_option('enable_ffmpeg'))
audec_deps += dependency('libavcodec')
audec_deps += dependency('libavformat')
audec_deps += dependency('libavutil')
cdata.set('HAVE_FFMPEG', 1)
endif
audec_deps += [
dependency('sndfile', version: '>=1.0.25'),
dependency('samplerate', version: '>=0.1.8'),
]
# create config.h and add to deps
tmp_h = configure_file (
output: 'tmp.h',
configuration: cdata,
)
config_h_vcs = vcs_tag (
input: tmp_h,
output: 'config.h',
)
config_h_dep = declare_dependency (
sources: config_h_vcs,
)
audec_deps += config_h_dep
audec = static_library (
'audec',
sources: srcs,
dependencies: [
audec_deps,
],
include_directories: inc,
install: true,
)
pkg_mod = import('pkgconfig')
pkg_mod.generate(
libraries: audec,
version: '0.1',
name: 'audec',
filebase: 'audec',
description: 'A library to read and resample audio files.',
)
summary = [
'',
'------',
'libaudec @0@'.format(meson.project_version()),
'',
' Build type: @0@'.format(
get_option('buildtype')),
' Optional libraries:',
' ffmpeg: @0@'.format(get_option('enable_ffmpeg')),
' Directories:',
' prefix: @0@'.format(prefix),
' includedir: @0@'.format(includedir),
' libdir: @0@'.format(libdir),
'------',
''
]
message('\n'.join(summary))

22
meson_options.txt
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# Copyright (C) 2019 Alexandros Theodotou <alex at zrythm dot org>
#
# This file is part of libaudec
#
# libaudec is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# libaudec is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with libaudec. If not, see <https://www.gnu.org/licenses/>.
option (
'enable_ffmpeg',
type: 'boolean',
value: false,
description: 'Compile with ffmpeg (for MP3 support)')

389
src/ad_ffmpeg.c
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/**
Copyright (C) 2011-2013 Robin Gareus <robin@gareus.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser Public License as published by
the Free Software Foundation; either version 2.1, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <math.h>
#include "ad_plugin.h"
#ifdef HAVE_FFMPEG
#include "ffcompat.h"
#ifndef MIN
#define MIN(a,b) ( ( (a) < (b) )? (a) : (b) )
#endif
typedef struct {
AVFormatContext* formatContext;
AVCodecContext* codecContext;
AVCodec* codec;
AVPacket packet;
int audioStream;
int pkt_len;
uint8_t* pkt_ptr;
int16_t m_tmpBuffer[AVCODEC_MAX_AUDIO_FRAME_SIZE];
int16_t* m_tmpBufferStart;
unsigned long m_tmpBufferLen;
int64_t decoder_clock;
int64_t output_clock;
int64_t seek_frame;
unsigned int samplerate;
unsigned int channels;
int64_t length;
} ffmpeg_audio_decoder;
static int ad_info_ffmpeg(void *sf, struct adinfo *nfo) {
ffmpeg_audio_decoder *priv = (ffmpeg_audio_decoder*) sf;
if (!priv) return -1;
if (nfo) {
nfo->sample_rate = priv->samplerate;
nfo->channels = priv->channels;
nfo->frames = priv->length;
if (nfo->sample_rate==0) return -1;
nfo->length = (nfo->frames * 1000) / nfo->sample_rate;
nfo->bit_rate = priv->formatContext->bit_rate;
nfo->bit_depth = 0;
nfo->meta_data = NULL;
#ifdef WITH_GTK // XXX replace g_* functions with POSIX equiv
AVDictionaryEntry *tag = NULL;
// Tags in container
while ((tag = av_dict_get(priv->formatContext->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
dbg(2, "FTAG: %s=%s", tag->key, tag->value);
char * tmp = g_strdup_printf("%s%s<i>%s</i>:%s", nfo->meta_data?nfo->meta_data:"",nfo->meta_data?"\n":"", tag->key, tag->value);
if (nfo->meta_data) g_free(nfo->meta_data);
nfo->meta_data = tmp;
}
// Tags in stream
tag=NULL;
AVStream *stream = priv->formatContext->streams[priv->audioStream];
while ((tag = av_dict_get(stream->metadata, "", tag, AV_DICT_IGNORE_SUFFIX))) {
dbg(2, "STAG: %s=%s", tag->key, tag->value);
char * tmp = g_strdup_printf("%s%s<i>%s</i>:%s", nfo->meta_data?nfo->meta_data:"",nfo->meta_data?"\n":"", tag->key, tag->value);
if (nfo->meta_data) g_free(nfo->meta_data);
nfo->meta_data = tmp;
}
#endif
}
return 0;
}
static void *ad_open_ffmpeg(const char *fn, struct adinfo *nfo) {
ffmpeg_audio_decoder *priv = (ffmpeg_audio_decoder*) calloc(1, sizeof(ffmpeg_audio_decoder));
priv->m_tmpBufferStart=NULL;
priv->m_tmpBufferLen=0;
priv->decoder_clock=priv->output_clock=priv->seek_frame=0;
priv->packet.size=0; priv->packet.data=NULL;
if (avformat_open_input(&priv->formatContext, fn, NULL, NULL) <0) {
dbg(0, "ffmpeg is unable to open file '%s'.", fn);
free(priv); return(NULL);
}
if (avformat_find_stream_info(priv->formatContext, NULL) < 0) {
avformat_close_input(&priv->formatContext);
dbg(0, "av_find_stream_info failed" );
free(priv); return(NULL);
}
priv->audioStream = -1;
unsigned int i;
for (i=0; i<priv->formatContext->nb_streams; i++) {
if (priv->formatContext->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
priv->audioStream = i;
break;
}
}
if (priv->audioStream == -1) {
dbg(0, "No Audio Stream found in file");
avformat_close_input(&priv->formatContext);
free(priv); return(NULL);
}
priv->codecContext = priv->formatContext->streams[priv->audioStream]->codec;
priv->codec = avcodec_find_decoder(priv->codecContext->codec_id);
if (priv->codec == NULL) {
avformat_close_input(&priv->formatContext);
dbg(0, "Codec not supported by ffmpeg");
free(priv); return(NULL);
}
if (avcodec_open2(priv->codecContext, priv->codec, NULL) < 0) {
dbg(0, "avcodec_open failed" );
free(priv); return(NULL);
}
dbg(2, "ffmpeg - audio tics: %i/%i [sec]",priv->formatContext->streams[priv->audioStream]->time_base.num,priv->formatContext->streams[priv->audioStream]->time_base.den);
int64_t len = priv->formatContext->duration - priv->formatContext->start_time;
priv->formatContext->flags|=AVFMT_FLAG_GENPTS;
priv->formatContext->flags|=AVFMT_FLAG_IGNIDX;
priv->samplerate = priv->codecContext->sample_rate;
priv->channels = priv->codecContext->channels ;
priv->length = (int64_t)( len * priv->samplerate / AV_TIME_BASE );
if (ad_info_ffmpeg((void*)priv, nfo)) {
dbg(0, "invalid file info (sample-rate==0)");
free(priv); return(NULL);
}
dbg(1, "ffmpeg - %s", fn);
if (nfo)
dbg(1, "ffmpeg - sr:%i c:%i d:%"PRIi64" f:%"PRIi64, nfo->sample_rate, nfo->channels, nfo->length, nfo->frames);
return (void*) priv;
}
static int ad_close_ffmpeg(void *sf) {
ffmpeg_audio_decoder *priv = (ffmpeg_audio_decoder*) sf;
if (!priv) return -1;
avcodec_close(priv->codecContext);
avformat_close_input(&priv->formatContext);
free(priv);
return 0;
}
static void int16_to_float(int16_t *in, float *out, int num_channels, int num_samples, int out_offset) {
int i,ii;
for (i=0;i<num_samples;i++) {
for (ii=0;ii<num_channels;ii++) {
out[(i+out_offset)*num_channels+ii]= (float) in[i*num_channels+ii]/ 32768.0;
}
}
}
static ssize_t ad_read_ffmpeg(void *sf, float* d, size_t len) {
ffmpeg_audio_decoder *priv = (ffmpeg_audio_decoder*) sf;
if (!priv) return -1;
size_t frames = len / priv->channels;
size_t written = 0;
ssize_t ret = 0;
while (ret >= 0 && written < frames) {
dbg(3,"loop: %i/%i (bl:%lu)",written, frames, priv->m_tmpBufferLen );
if (priv->seek_frame == 0 && priv->m_tmpBufferLen > 0 ) {
int s = MIN(priv->m_tmpBufferLen / priv->channels, frames - written );
int16_to_float(priv->m_tmpBufferStart, d, priv->channels, s , written);
written += s;
priv->output_clock+=s;
s = s * priv->channels;
priv->m_tmpBufferStart += s;
priv->m_tmpBufferLen -= s;
ret = 0;
} else {
priv->m_tmpBufferStart = priv->m_tmpBuffer;
priv->m_tmpBufferLen = 0;
if (!priv->pkt_ptr || priv->pkt_len <1 ) {
if (priv->packet.data) av_free_packet(&priv->packet);
ret = av_read_frame(priv->formatContext, &priv->packet);
if (ret<0) { dbg(1, "reached end of file."); break; }
priv->pkt_len = priv->packet.size;
priv->pkt_ptr = priv->packet.data;
}
if (priv->packet.stream_index != priv->audioStream) {
priv->pkt_ptr = NULL;
continue;
}
/* decode all chunks in packet */
int data_size = AVCODEC_MAX_AUDIO_FRAME_SIZE;
#if LIBAVCODEC_VERSION_INT >= AV_VERSION_INT(54, 0, 0)
// TODO use av_frame_alloc() and av_frame_free() with newer ffmpeg
AVFrame avf;
memset(&avf, 0, sizeof(AVFrame));
int got_frame = 0;
ret = avcodec_decode_audio4(priv->codecContext, &avf, &got_frame, &priv->packet);
if (ret >= 0 && got_frame) {
int ch, plane_size;
const int planar = av_sample_fmt_is_planar(priv->codecContext->sample_fmt);
data_size = av_samples_get_buffer_size(&plane_size, priv->codecContext->channels, avf.nb_samples, priv->codecContext->sample_fmt, 1);
if (data_size <= AVCODEC_MAX_AUDIO_FRAME_SIZE) {
memcpy(priv->m_tmpBuffer, avf.extended_data[0], plane_size);
if (planar && priv->codecContext->channels > 1) {
uint8_t *out = ((uint8_t *)priv->m_tmpBuffer) + plane_size;
for (ch = 1; ch < priv->codecContext->channels; ch++) {
memcpy(out, avf.extended_data[ch], plane_size);
out += plane_size;
}
}
}
} else {
ret = -1;
}
#elif LIBAVUTIL_VERSION_INT > AV_VERSION_INT(49, 15, 0) && LIBAVCODEC_VERSION_INT > AV_VERSION_INT(52, 20, 1) // ??
// this was deprecated in LIBAVCODEC_VERSION_MAJOR 53
ret = avcodec_decode_audio3(priv->codecContext,
priv->m_tmpBuffer, &data_size, &priv->packet);
#else
int len = priv->packet.size;
uint8_t *ptr = priv->packet.data;
ret = avcodec_decode_audio2(priv->codecContext,
priv->m_tmpBuffer, &data_size, ptr, len);
#endif
if (ret < 0 || ret > priv->pkt_len) {
#if 0
dbg(0, "audio decode error");
return -1;
#endif
priv->pkt_len=0;
ret=0;
continue;
}
priv->pkt_len -= ret; priv->pkt_ptr += ret;
/* sample exact alignment */
if (priv->packet.pts != AV_NOPTS_VALUE) {
priv->decoder_clock = priv->samplerate * av_q2d(priv->formatContext->streams[priv->audioStream]->time_base) * priv->packet.pts;
} else {
dbg(0, "!!! NO PTS timestamp in file");
priv->decoder_clock += (data_size>>1) / priv->channels;
}
if (data_size>0) {
priv->m_tmpBufferLen+= (data_size>>1); // 2 bytes per sample
}
/* align buffer after seek. */
if (priv->seek_frame > 0) {
const int diff = priv->output_clock-priv->decoder_clock;
if (diff<0) {
/* seek ended up past the wanted sample */
dbg(0, " !!! Audio seek failed.");
return -1;
} else if (priv->m_tmpBufferLen < (diff*priv->channels)) {
/* wanted sample not in current buffer - keep going */
dbg(2, " !!! seeked sample was not in decoded buffer. frames-to-go: %li", diff);
priv->m_tmpBufferLen = 0;
} else if (diff!=0 && data_size > 0) {
/* wanted sample is in current buffer but not at the beginnning */
dbg(2, " !!! sync buffer to seek. (diff:%i)", diff);
priv->m_tmpBufferStart+= diff*priv->codecContext->channels;
priv->m_tmpBufferLen -= diff*priv->codecContext->channels;
#if 1
memmove(priv->m_tmpBuffer, priv->m_tmpBufferStart, priv->m_tmpBufferLen);
priv->m_tmpBufferStart = priv->m_tmpBuffer;
#endif
priv->seek_frame=0;
priv->decoder_clock += diff;
} else if (data_size > 0) {
dbg(2, "Audio exact sync-seek (%"PRIi64" == %"PRIi64")", priv->decoder_clock, priv->seek_frame);
priv->seek_frame=0;
} else {
dbg(0, "Error: no audio data in packet");
}
}
//dbg(0, "PTS: decoder:%"PRIi64". - want: %"PRIi64, priv->decoder_clock, priv->output_clock);
//dbg(0, "CLK: frame: %"PRIi64" T:%.3fs",priv->decoder_clock, (float) priv->decoder_clock/priv->samplerate);
}
}
if (written!=frames) {
dbg(2, "short-read");
}
return written * priv->channels;
}
static int64_t ad_seek_ffmpeg(void *sf, int64_t pos) {
ffmpeg_audio_decoder *priv = (ffmpeg_audio_decoder*) sf;
if (!sf) return -1;
if (pos == priv->output_clock) return pos;
/* flush internal buffer */
priv->m_tmpBufferLen = 0;
priv->seek_frame = pos;
priv->output_clock = pos;
priv->pkt_len = 0; priv->pkt_ptr = NULL;
priv->decoder_clock = 0;
#if 0
/* TODO seek at least 1 packet before target.
* for mpeg compressed files, the
* output may depend on past frames! */
if (pos > 8192) pos -= 8192;
else pos = 0;
#endif
const int64_t timestamp = pos / av_q2d(priv->formatContext->streams[priv->audioStream]->time_base) / priv->samplerate;
dbg(2, "seek frame:%"PRIi64" - idx:%"PRIi64, pos, timestamp);
av_seek_frame(priv->formatContext, priv->audioStream, timestamp, AVSEEK_FLAG_ANY | AVSEEK_FLAG_BACKWARD);
avcodec_flush_buffers(priv->codecContext);
return pos;
}
static int ad_eval_ffmpeg(const char *f) {
char *ext = strrchr(f, '.');
if (!ext) return 10;
// libavformat.. guess_format..
return 40;
}
#endif
static const ad_plugin ad_ffmpeg = {
#ifdef HAVE_FFMPEG
&ad_eval_ffmpeg,
&ad_open_ffmpeg,
&ad_close_ffmpeg,
&ad_info_ffmpeg,
&ad_seek_ffmpeg,
&ad_read_ffmpeg
#else
&ad_eval_null,
&ad_open_null,
&ad_close_null,
&ad_info_null,
&ad_seek_null,
&ad_read_null
#endif
};
/* dlopen handler */
const ad_plugin * adp_get_ffmpeg() {
#ifdef HAVE_FFMPEG
static int ffinit = 0;
if (!ffinit) {
ffinit=1;
#if LIBAVFORMAT_VERSION_INT < AV_VERSION_INT(53, 5, 0)
avcodec_init();
#endif
av_register_all();
avcodec_register_all();
if(ad_debug_level <= 1)
av_log_set_level(AV_LOG_QUIET);
else
av_log_set_level(AV_LOG_VERBOSE);
}
#endif
return &ad_ffmpeg;
}

176
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/**
Copyright (C) 2011-2013 Robin Gareus <robin@gareus.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser Public License as published by
the Free Software Foundation; either version 2.1, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include <math.h>
#include "ad_plugin.h"
int ad_debug_level = 0;
#define UNUSED(x) (void)(x)
int ad_eval_null(const char *f) { UNUSED(f); return -1; }
void * ad_open_null(const char *f, struct adinfo *n) { UNUSED(f); UNUSED(n); return NULL; }
int ad_close_null(void *x) { UNUSED(x); return -1; }
int ad_info_null(void *x, struct adinfo *n) { UNUSED(x); UNUSED(n); return -1; }
int64_t ad_seek_null(void *x, int64_t p) { UNUSED(x); UNUSED(p); return -1; }
ssize_t ad_read_null(void *x, float*d, size_t s) { UNUSED(x); UNUSED(d); UNUSED(s); return -1;}
typedef struct {
ad_plugin const *b; ///< decoder back-end
void *d; ///< backend data
} adecoder;
/* samplecat api */
void ad_init() { /* global init */ }
static ad_plugin const * choose_backend(const char *fn) {
int max, val;
ad_plugin const *b=NULL;
max=0;
val=adp_get_sndfile()->eval(fn);
if (val>max) {max=val; b=adp_get_sndfile();}
val=adp_get_ffmpeg()->eval(fn);
if (val>max) {max=val; b=adp_get_ffmpeg();}
return b;
}
void *ad_open(const char *fn, struct adinfo *nfo) {
adecoder *d = (adecoder*) calloc(1, sizeof(adecoder));
ad_clear_nfo(nfo);
d->b = choose_backend(fn);
if (!d->b) {
dbg(0, "fatal: no decoder backend available");
free(d);
return NULL;
}
d->d = d->b->open(fn, nfo);
if (!d->d) {
free(d);
return NULL;
}
return (void*)d;
}
int ad_info(void *sf, struct adinfo *nfo) {
adecoder *d = (adecoder*) sf;
if (!d) return -1;
return d->b->info(d->d, nfo);
}
int ad_close(void *sf) {
adecoder *d = (adecoder*) sf;
if (!d) return -1;
int rv = d->b->close(d->d);
free(d);
return rv;
}
int64_t ad_seek(void *sf, int64_t pos) {
adecoder *d = (adecoder*) sf;
if (!d) return -1;
return d->b->seek(d->d, pos);
}
ssize_t ad_read(void *sf, float* out, size_t len){
adecoder *d = (adecoder*) sf;
if (!d) return -1;
return d->b->read(d->d, out, len);
}
/*
* side-effects: allocates buffer
*/
ssize_t ad_read_mono_dbl(void *sf, struct adinfo *nfo, double* d, size_t len){
unsigned int c,f;
unsigned int chn = nfo->channels;
if (len<1) return 0;
static float *buf = NULL;
static size_t bufsiz = 0;
if (!buf || bufsiz != len*chn) {
bufsiz=len*chn;
buf = (float*) realloc((void*)buf, bufsiz * sizeof(float));
}
len = ad_read(sf, buf, bufsiz);
for (f=0;f< (len/chn);f++) {
double val=0.0;
for (c=0;c<chn;c++) {
val+=buf[f*chn + c];
}
d[f]= val/chn;
}
return len/chn;
}
int ad_finfo (const char *fn, struct adinfo *nfo) {
ad_clear_nfo(nfo);
void * sf = ad_open(fn, nfo);
return ad_close(sf)?1:0;
}
void ad_clear_nfo(struct adinfo *nfo) {
memset(nfo, 0, sizeof(struct adinfo));
}
void ad_free_nfo(struct adinfo *nfo) {
if (nfo->meta_data) free(nfo->meta_data);
}
void ad_dump_nfo(int dbglvl, struct adinfo *nfo) {
dbg(dbglvl, "sample_rate: %u", nfo->sample_rate);
dbg(dbglvl, "channels: %u", nfo->channels);
dbg(dbglvl, "length: %"PRIi64" ms", nfo->length);
dbg(dbglvl, "frames: %"PRIi64, nfo->frames);
dbg(dbglvl, "bit_rate: %d", nfo->bit_rate);
dbg(dbglvl, "bit_depth: %d", nfo->bit_depth);
dbg(dbglvl, "channels: %u", nfo->channels);
dbg(dbglvl, "meta-data: %s", nfo->meta_data?nfo->meta_data:"-");
}
void ad_debug_printf(const char* func, int level, const char* format, ...) {
va_list args;
va_start(args, format);
if (level <= ad_debug_level) {
fprintf(stderr, "%s(): ", func);
vfprintf(stderr, format, args);
fprintf(stderr, "\n");
}
va_end(args);
}
void ad_set_debuglevel(int lvl) {
ad_debug_level = lvl;
if (ad_debug_level<-1) ad_debug_level=-1;
if (ad_debug_level>3) ad_debug_level=3;
}

155
src/ad_soundfile.c
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/**
Copyright (C) 2011-2013 Robin Gareus <robin@gareus.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser Public License as published by
the Free Software Foundation; either version 2.1, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <unistd.h>
#include <math.h>
#include <sndfile.h>
#include "ad_plugin.h"
/* internal abstraction */
typedef struct {
SF_INFO sfinfo;
SNDFILE *sffile;
} sndfile_audio_decoder;
static int parse_bit_depth(int format) {
/* see http://www.mega-nerd.com/libsndfile/api.html */
switch (format&0x0f) {
case SF_FORMAT_PCM_S8: return 8;
case SF_FORMAT_PCM_16: return 16; /* Signed 16 bit data */
case SF_FORMAT_PCM_24: return 24; /* Signed 24 bit data */
case SF_FORMAT_PCM_32: return 32; /* Signed 32 bit data */
case SF_FORMAT_PCM_U8: return 8; /* Unsigned 8 bit data (WAV and RAW only) */
case SF_FORMAT_FLOAT : return 32; /* 32 bit float data */
case SF_FORMAT_DOUBLE: return 64; /* 64 bit float data */
default: break;
}
return 0;
}
static int ad_info_sndfile(void *sf, struct adinfo *nfo) {
sndfile_audio_decoder *priv = (sndfile_audio_decoder*) sf;
if (!priv) return -1;
if (nfo) {
nfo->channels = priv->sfinfo.channels;
nfo->frames = priv->sfinfo.frames;
nfo->sample_rate = priv->sfinfo.samplerate;
nfo->length = priv->sfinfo.samplerate ? (priv->sfinfo.frames * 1000) / priv->sfinfo.samplerate : 0;
nfo->bit_depth = parse_bit_depth(priv->sfinfo.format);
nfo->bit_rate = nfo->bit_depth * nfo->channels * nfo->sample_rate;
nfo->meta_data = NULL;
}
return 0;
}
static void *ad_open_sndfile(const char *fn, struct adinfo *nfo) {
sndfile_audio_decoder *priv = (sndfile_audio_decoder*) calloc(1, sizeof(sndfile_audio_decoder));
priv->sfinfo.format=0;
if(!(priv->sffile = sf_open(fn, SFM_READ, &priv->sfinfo))){
dbg(0, "unable to open file '%s'.", fn);
puts(sf_strerror(NULL));
int e = sf_error(NULL);
dbg(0, "error=%i", e);
free(priv);
return NULL;
}
ad_info_sndfile(priv, nfo);
return (void*) priv;
}
static int ad_close_sndfile(void *sf) {
sndfile_audio_decoder *priv = (sndfile_audio_decoder*) sf;
if (!priv) return -1;
if(!sf || sf_close(priv->sffile)) {
dbg(0, "fatal: bad file close.\n");
return -1;
}
free(priv);
return 0;
}
static int64_t ad_seek_sndfile(void *sf, int64_t pos) {
sndfile_audio_decoder *priv = (sndfile_audio_decoder*) sf;
if (!priv) return -1;
return sf_seek(priv->sffile, pos, SEEK_SET);
}
static ssize_t ad_read_sndfile(void *sf, float* d, size_t len) {
sndfile_audio_decoder *priv = (sndfile_audio_decoder*) sf;
if (!priv) return -1;
return sf_read_float (priv->sffile, d, len);
}
static int ad_eval_sndfile(const char *f) {
char *ext = strrchr(f, '.');
if (strstr (f, "://")) return 0;
if (!ext) return 5;
/* see http://www.mega-nerd.com/libsndfile/ */
if (!strcasecmp(ext, ".wav")) return 100;
if (!strcasecmp(ext, ".aiff")) return 100;
if (!strcasecmp(ext, ".aifc")) return 100;
if (!strcasecmp(ext, ".snd")) return 100;
if (!strcasecmp(ext, ".au")) return 100;
if (!strcasecmp(ext, ".paf")) return 100;
if (!strcasecmp(ext, ".iff")) return 100;
if (!strcasecmp(ext, ".svx")) return 100;
if (!strcasecmp(ext, ".sf")) return 100;
if (!strcasecmp(ext, ".vcc")) return 100;
if (!strcasecmp(ext, ".w64")) return 100;
if (!strcasecmp(ext, ".mat4")) return 100;
if (!strcasecmp(ext, ".mat5")) return 100;
if (!strcasecmp(ext, ".pvf5")) return 100;
if (!strcasecmp(ext, ".xi")) return 100;
if (!strcasecmp(ext, ".htk")) return 100;
if (!strcasecmp(ext, ".pvf")) return 100;
if (!strcasecmp(ext, ".sd2")) return 100;
// libsndfile >= 1.0.18
if (!strcasecmp(ext, ".flac")) return 80;
if (!strcasecmp(ext, ".ogg")) return 80;
return 0;
}
static const ad_plugin ad_sndfile = {
#if 1
&ad_eval_sndfile,
&ad_open_sndfile,
&ad_close_sndfile,
&ad_info_sndfile,
&ad_seek_sndfile,
&ad_read_sndfile
#else
&ad_eval_null,
&ad_open_null,
&ad_close_null,
&ad_info_null,
&ad_seek_null,
&ad_read_null
#endif
};
/* dlopen handler */
const ad_plugin * adp_get_sndfile() {
return &ad_sndfile;
}

22
src/meson.build
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# Copyright (C) 2019 Alexandros Theodotou <alex at zrythm dot org>
#
# This file is part of libaudec
#
# libaudec is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser