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0a54f96a44
This uses the existing optional runtime ffmpeg dependency to add support for m4a files (and in theory whatever other file formats ffmpeg supports) to the import audio dialog. The same functionality is mostly already available via Session -> Open Video, with the "import audio only" selection (even though m4a isn't currently included as one of the video formats, it still works). Having this in the import audio dialog however seems much more user friendly.
96 lines
2.6 KiB
C++
96 lines
2.6 KiB
C++
/*
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* Copyright (C) 2021 Marijn Kruisselbrink <mek@google.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "ardour/ffmpegfileimportable.h"
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#include "ardour/ffmpegfilesource.h"
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#include "ardour/filesystem_paths.h"
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namespace ARDOUR {
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/** Constructor to be called for existing external-to-session files
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* Sources created with this method are never writable or removable.
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*/
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FFMPEGFileSource::FFMPEGFileSource (Session& s, const std::string& path, int chn, Flag flags)
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: Source (s, DataType::AUDIO, path,
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Source::Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
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, AudioFileSource (s, path,
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Source::Flag (flags & ~(Writable|Removable|RemovableIfEmpty|RemoveAtDestroy)))
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, _ffmpeg (path, chn)
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{
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_length = _ffmpeg.length ();
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}
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FFMPEGFileSource::~FFMPEGFileSource ()
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{
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}
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void
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FFMPEGFileSource::close ()
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{
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}
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samplecnt_t
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FFMPEGFileSource::read_unlocked (Sample* dst, samplepos_t start, samplecnt_t cnt) const
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{
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_ffmpeg.seek (start);
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return _ffmpeg.read (dst, cnt);
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}
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int
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FFMPEGFileSource::get_soundfile_info (const std::string& path, SoundFileInfo &_info, std::string &error_msg)
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{
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if (!safe_audio_file_extension (path)) {
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return -1;
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}
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try {
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FFMPEGFileImportableSource ffmpeg (path);
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_info.samplerate = ffmpeg.samplerate ();
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_info.channels = ffmpeg.channels ();
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_info.length = ffmpeg.length ();
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_info.format_name = ffmpeg.format_name ();
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_info.timecode = ffmpeg.natural_position ();
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_info.seekable = false;
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return 0;
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} catch (...) {}
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return -1;
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}
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bool
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FFMPEGFileSource::safe_audio_file_extension (const std::string &file)
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{
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std::string unused;
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if (!ArdourVideoToolPaths::transcoder_exe (unused, unused)) {
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return false;
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}
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const char *suffixes[] = {
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".m4a", ".M4A",
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};
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for (size_t n = 0; n < sizeof(suffixes) / sizeof(suffixes[0]); ++n) {
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if (file.rfind(suffixes[n]) == file.length() - strlen(suffixes[n])) {
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return true;
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}
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}
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return false;
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}
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}
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