mpd/src/inputPlugins/mod_plugin.c

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/* the Music Player Daemon (MPD)
* Copyright (C) 2003-2007 by Warren Dukes (warren.dukes@gmail.com)
* This project's homepage is: 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "../decoder_api.h"
#ifdef HAVE_MIKMOD
#include "../utils.h"
#include "../log.h"
#include <mikmod.h>
/* this is largely copied from alsaplayer */
#define MIKMOD_FRAME_SIZE 4096
static BOOL mod_mpd_Init(void)
{
return VC_Init();
}
static void mod_mpd_Exit(void)
{
VC_Exit();
}
static void mod_mpd_Update(void)
{
}
static BOOL mod_mpd_IsThere(void)
{
return 1;
}
static MDRIVER drv_mpd = {
NULL,
"MPD",
"MPD Output Driver v0.1",
0,
255,
#if (LIBMIKMOD_VERSION > 0x030106)
"mpd", /* Alias */
#if (LIBMIKMOD_VERSION >= 0x030200)
NULL, /* CmdLineHelp */
#endif
NULL, /* CommandLine */
#endif
mod_mpd_IsThere,
VC_SampleLoad,
VC_SampleUnload,
VC_SampleSpace,
VC_SampleLength,
mod_mpd_Init,
mod_mpd_Exit,
NULL,
VC_SetNumVoices,
VC_PlayStart,
VC_PlayStop,
mod_mpd_Update,
NULL,
VC_VoiceSetVolume,
VC_VoiceGetVolume,
VC_VoiceSetFrequency,
VC_VoiceGetFrequency,
VC_VoiceSetPanning,
VC_VoiceGetPanning,
VC_VoicePlay,
VC_VoiceStop,
VC_VoiceStopped,
VC_VoiceGetPosition,
VC_VoiceRealVolume
};
static int mod_mikModInitiated;
static int mod_mikModInitError;
static int mod_initMikMod(void)
{
if (mod_mikModInitError)
return -1;
if (!mod_mikModInitiated) {
mod_mikModInitiated = 1;
md_device = 0;
md_reverb = 0;
MikMod_RegisterDriver(&drv_mpd);
MikMod_RegisterAllLoaders();
}
md_pansep = 64;
md_mixfreq = 44100;
md_mode = (DMODE_SOFT_MUSIC | DMODE_INTERP | DMODE_STEREO |
DMODE_16BITS);
if (MikMod_Init("")) {
ERROR("Could not init MikMod: %s\n",
MikMod_strerror(MikMod_errno));
mod_mikModInitError = 1;
return -1;
}
return 0;
}
static void mod_finishMikMod(void)
{
MikMod_Exit();
}
typedef struct _mod_Data {
MODULE *moduleHandle;
SBYTE *audio_buffer;
} mod_Data;
static mod_Data *mod_open(char *path)
{
MODULE *moduleHandle;
mod_Data *data;
if (!(moduleHandle = Player_Load(path, 128, 0)))
return NULL;
/* Prevent module from looping forever */
moduleHandle->loop = 0;
data = xmalloc(sizeof(mod_Data));
data->audio_buffer = xmalloc(MIKMOD_FRAME_SIZE);
data->moduleHandle = moduleHandle;
Player_Start(data->moduleHandle);
return data;
}
static void mod_close(mod_Data * data)
{
Player_Stop();
Player_Free(data->moduleHandle);
free(data->audio_buffer);
free(data);
}
static int mod_decode(struct decoder * decoder, char *path)
{
mod_Data *data;
AudioFormat audio_format;
float total_time = 0.0;
int ret;
float secPerByte;
if (mod_initMikMod() < 0)
return -1;
if (!(data = mod_open(path))) {
ERROR("failed to open mod: %s\n", path);
MikMod_Exit();
return -1;
}
audio_format.bits = 16;
audio_format.sampleRate = 44100;
audio_format.channels = 2;
secPerByte =
1.0 / ((audio_format.bits * audio_format.channels / 8.0) *
(float)audio_format.sampleRate);
decoder_initialized(decoder, &audio_format, 0);
while (1) {
if (decoder_get_command(decoder) == DECODE_COMMAND_SEEK) {
decoder_seek_error(decoder);
}
if (decoder_get_command(decoder) == DECODE_COMMAND_STOP)
break;
if (!Player_Active())
break;
ret = VC_WriteBytes(data->audio_buffer, MIKMOD_FRAME_SIZE);
total_time += ret * secPerByte;
decoder_data(decoder, NULL, 0,
(char *)data->audio_buffer, ret,
total_time, 0, NULL);
}
decoder_flush(decoder);
mod_close(data);
MikMod_Exit();
return 0;
}
static MpdTag *modTagDup(char *file)
{
MpdTag *ret = NULL;
MODULE *moduleHandle;
char *title;
if (mod_initMikMod() < 0) {
DEBUG("modTagDup: Failed to initialize MikMod\n");
return NULL;
}
if (!(moduleHandle = Player_Load(file, 128, 0))) {
DEBUG("modTagDup: Failed to open file: %s\n", file);
MikMod_Exit();
return NULL;
}
Player_Free(moduleHandle);
ret = newMpdTag();
ret->time = 0;
title = xstrdup(Player_LoadTitle(file));
if (title)
addItemToMpdTag(ret, TAG_ITEM_TITLE, title);
MikMod_Exit();
return ret;
}
static const char *modSuffixes[] = { "amf",
"dsm",
"far",
"gdm",
"imf",
"it",
"med",
"mod",
"mtm",
"s3m",
"stm",
"stx",
"ult",
"uni",
"xm",
NULL
};
InputPlugin modPlugin = {
"mod",
NULL,
mod_finishMikMod,
NULL,
NULL,
mod_decode,
modTagDup,
INPUT_PLUGIN_STREAM_FILE,
modSuffixes,
NULL
};
#else
InputPlugin modPlugin;
#endif /* HAVE_MIKMOD */