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/*
* Copyright 2003-2021 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "MikmodDecoderPlugin.hxx"
#include "../DecoderAPI.hxx"
#include "lib/fmt/PathFormatter.hxx"
#include "tag/Handler.hxx"
#include "fs/Path.hxx"
#include "util/Domain.hxx"
#include "util/RuntimeError.hxx"
#include "util/StringView.hxx"
#include "Log.hxx"
#include "Version.h"
#include <mikmod.h>
#include <cassert>
static constexpr Domain mikmod_domain("mikmod");
/* this is largely copied from alsaplayer */
static constexpr size_t MIKMOD_FRAME_SIZE = 4096;
static BOOL
mikmod_mpd_init()
{
return VC_Init();
}
static void
mikmod_mpd_exit()
{
VC_Exit();
}
static void
mikmod_mpd_update()
{
}
static BOOL
mikmod_mpd_is_present()
{
return true;
}
static constexpr char drv_name[] = PACKAGE_NAME;
static constexpr char drv_version[] = VERSION;
static constexpr char drv_alias[] = PACKAGE;
static MDRIVER drv_mpd = {
nullptr,
drv_name,
drv_version,
0,
255,
drv_alias,
nullptr, /* CmdLineHelp */
nullptr, /* CommandLine */
mikmod_mpd_is_present,
VC_SampleLoad,
VC_SampleUnload,
VC_SampleSpace,
VC_SampleLength,
mikmod_mpd_init,
mikmod_mpd_exit,
nullptr,
VC_SetNumVoices,
VC_PlayStart,
VC_PlayStop,
mikmod_mpd_update,
nullptr,
VC_VoiceSetVolume,
VC_VoiceGetVolume,
VC_VoiceSetFrequency,
VC_VoiceGetFrequency,
VC_VoiceSetPanning,
VC_VoiceGetPanning,
VC_VoicePlay,
VC_VoiceStop,
VC_VoiceStopped,
VC_VoiceGetPosition,
VC_VoiceRealVolume
};
static bool mikmod_loop;
static unsigned mikmod_sample_rate;
static bool
mikmod_decoder_init(const ConfigBlock &block)
{
static char params[] = "";
mikmod_loop = block.GetBlockValue("loop", false);
mikmod_sample_rate = block.GetPositiveValue("sample_rate", 44100U);
if (!audio_valid_sample_rate(mikmod_sample_rate))
throw FormatRuntimeError("Invalid sample rate in line %d: %u",
block.line, mikmod_sample_rate);
md_device = 0;
md_reverb = 0;
MikMod_RegisterDriver(&drv_mpd);
MikMod_RegisterAllLoaders();
md_pansep = 64;
md_mixfreq = mikmod_sample_rate;
md_mode = (DMODE_SOFT_MUSIC | DMODE_INTERP | DMODE_STEREO |
DMODE_16BITS);
if (MikMod_Init(params)) {
FmtError(mikmod_domain,
"Could not init MikMod: {}",
MikMod_strerror(MikMod_errno));
return false;
}
return true;
}
static void
mikmod_decoder_finish() noexcept
{
MikMod_Exit();
}
static void
mikmod_decoder_file_decode(DecoderClient &client, Path path_fs)
{
/* deconstify the path because libmikmod wants a non-const
string pointer */
char *const path2 = const_cast<char *>(path_fs.c_str());
MODULE *handle;
int ret;
SBYTE buffer[MIKMOD_FRAME_SIZE];
handle = Player_Load(path2, 128, 0);
if (handle == nullptr) {
FmtError(mikmod_domain, "failed to open mod: {}", path_fs);
return;
}
handle->loop = mikmod_loop;
const AudioFormat audio_format(mikmod_sample_rate, SampleFormat::S16, 2);
assert(audio_format.IsValid());
client.Ready(audio_format, false, SignedSongTime::Negative());
Player_Start(handle);
DecoderCommand cmd = DecoderCommand::NONE;
while (cmd == DecoderCommand::NONE && Player_Active()) {
ret = VC_WriteBytes(buffer, sizeof(buffer));
cmd = client.SubmitData(nullptr, buffer, ret, 0);
}
Player_Stop();
Player_Free(handle);
}
static bool
mikmod_decoder_scan_file(Path path_fs, TagHandler &handler) noexcept
{
/* deconstify the path because libmikmod wants a non-const
string pointer */
char *const path2 = const_cast<char *>(path_fs.c_str());
MODULE *handle = Player_Load(path2, 128, 0);
if (handle == nullptr) {
FmtDebug(mikmod_domain, "Failed to open file: {}", path_fs);
return false;
}
Player_Free(handle);
char *title = Player_LoadTitle(path2);
if (title != nullptr) {
handler.OnTag(TAG_TITLE, title);
MikMod_free(title);
}
return true;
}
static const char *const mikmod_decoder_suffixes[] = {
"amf",
"dsm",
"far",
"gdm",
"imf",
"it",
"med",
"mod",
"mtm",
"s3m",
"stm",
"stx",
"ult",
"uni",
"xm",
nullptr
};
constexpr DecoderPlugin mikmod_decoder_plugin =
DecoderPlugin("mikmod",
mikmod_decoder_file_decode, mikmod_decoder_scan_file)
.WithInit(mikmod_decoder_init, mikmod_decoder_finish)
.WithSuffixes(mikmod_decoder_suffixes);
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