Page MenuHomePhabricator (Chris)
Files F620254

music-player.cpp
No OneTemporary
Actions

Authored By
Unknown
Size
8 KB
Referenced Files
None
Subscribers
None

music-player.cpp
View Options

#ifdef USE_ALLEGRO
#include <allegro.h>
#endif
#include "music-player.h"
#include "globals.h"
#include <iostream>
#include "configuration.h"
#include "sound.h"
#include "dumb/include/dumb.h"
#include "gme/Music_Emu.h"
#ifdef USE_ALLEGRO
#include "dumb/include/aldumb.h"
#include "ogg/logg.h"
#ifdef _WIN32
/* what do we need winalleg for?
* reason: ...
*/
#include <winalleg.h>
#endif
#endif
#ifdef USE_SDL
#include "sdl/mixer/SDL_mixer.h"
#endif
namespace Util{
static double scaleVolume(double start){
return start * Configuration::getMusicVolume() / 100;
}
MusicPlayer::MusicPlayer():
volume(1.0){
}
MusicPlayer::~MusicPlayer(){
}
static const char * typeToExtension( int i ){
switch (i){
case 0 : return ".xm";
case 1 : return ".s3m";
case 2 : return ".it";
case 3 : return ".mod";
default : return "";
}
}
DUH * DumbPlayer::loadDumbFile(const char * path){
DUH * what;
for (int i = 0; i < 4; i++){
/* the order of trying xm/s3m/it/mod matters because mod could be
* confused with one of the other formats, so load it last.
*/
switch (i){
case 0 : {
what = dumb_load_xm_quick(path);
break;
}
case 1 : {
what = dumb_load_s3m_quick(path);
break;
}
case 2 : {
what = dumb_load_it_quick(path);
break;
}
case 3 : {
what = dumb_load_mod_quick(path);
break;
}
}
if (what != NULL){
Global::debug(0) << "Loaded " << path << " type " << typeToExtension(i) << "(" << i << ")" << std::endl;
return what;
}
}
return NULL;
}
#ifdef USE_ALLEGRO
DumbPlayer::DumbPlayer(const char * path){
music_file = loadDumbFile(path);
if (music_file != NULL){
int buf = 1 << 11;
player = al_start_duh(music_file, 2, 0, scaleVolume(volume), buf, Sound::FREQUENCY);
}
}
void DumbPlayer::play(){
al_resume_duh(this->player);
}
void DumbPlayer::poll(){
if (al_poll_duh(this->player) != 0){
}
}
void DumbPlayer::pause(){
al_pause_duh(this->player);
}
void DumbPlayer::setVolume(double volume){
this->volume = volume;
al_duh_set_volume(player, scaleVolume(volume));
}
DumbPlayer::~DumbPlayer(){
al_stop_duh(player);
unload_duh(music_file);
}
static const int GME_BUFFER_SIZE = 1 << 11;
GMEPlayer::GMEPlayer(const char * path){
gme_err_t fail = gme_open_file(path, &emulator, Sound::FREQUENCY);
if (fail != NULL){
Global::debug(0) << "GME load error for " << path << ": " << fail << std::endl;
throw std::exception();
}
emulator->start_track(0);
Global::debug(0) << "Loaded GME file " << path << std::endl;
stream = play_audio_stream(GME_BUFFER_SIZE, 16, 1, Sound::FREQUENCY, 255, 128);
voice_set_priority(stream->voice, 255);
}
void GMEPlayer::play(){
voice_start(stream->voice);
}
void GMEPlayer::poll(){
short * buffer = (short*) get_audio_stream_buffer(stream);
if (buffer){
/* size in 16-bit samples is buffer size * channels */
emulator->play(GME_BUFFER_SIZE * 2, buffer);
if (emulator->track_ended()){
gme_info_t * info;
gme_track_info(emulator, &info, 0);
int intro = info->intro_length;
emulator->start_track(0);
// Global::debug(0) << "Seeking " << intro << "ms. Track length " << info->length << "ms" << std::endl;
/* skip past the intro if there is a loop */
if (info->loop_length != 0){
emulator->seek(intro);
}
}
/* allegro wants unsigned data but gme produces signed so to convert
* signed samples to unsigned samples we have to raise each value
* by half the maximum value of a short (0xffff+1)/2 = 0x8000
*/
for (int i = 0; i < GME_BUFFER_SIZE * 2; i++){
buffer[i] += 0x8000;
}
free_audio_stream_buffer(stream);
}
}
void GMEPlayer::pause(){
voice_stop(stream->voice);
}
void GMEPlayer::setVolume(double volume){
/* FIXME */
}
GMEPlayer::~GMEPlayer(){
delete emulator;
stop_audio_stream(stream);
}
#ifdef HAVE_OGG
OggPlayer::OggPlayer(const char * path){
stream = logg_get_stream(path, scaleVolume(volume) * 255, 128, 1);
}
void OggPlayer::play(){
}
void OggPlayer::poll(){
logg_update_stream(stream);
}
void OggPlayer::pause(){
}
void OggPlayer::setVolume(double volume){
}
OggPlayer::~OggPlayer(){
logg_destroy_stream(stream);
}
#endif /* OGG */
#endif /* ALlEGRO */
#ifdef USE_SDL
DumbPlayer::DumbPlayer(const char * path){
music_file = loadDumbFile(path);
if (music_file == NULL){
/* FIXME */
throw std::exception();
}
int n_channels = 2;
int position = 0;
renderer = duh_start_sigrenderer(music_file, 0, n_channels, position);
if (!renderer){
Global::debug(0) << "Could not create renderer" << std::endl;
throw std::exception();
}
}
void DumbPlayer::render(Uint8 * stream, int length){
double delta = 65536.0 / Sound::FREQUENCY;
/* a frame is 32 bits, 16 bit samples with 2 channels = 2 * 16,
* so we have to divide the number of 'dumb samples' by the
* size of each frame, 32 bits = 4 bytes
*/
/* FIXME: use global music volume to scale the output here */
int n = duh_render(renderer, 16, 0, volume, delta, length / 4, stream);
if (n == 0){
Global::debug(0) << "Sound finished?" << std::endl;
}
/*
short large = 0;
for (int i = 0; i < length / 2; i++){
short z = ((short *) stream)[i];
if (z < 0){
z = -z;
}
if (z > large){
large = z;
}
}
Global::debug(0) << "Largest amplitude " << large << std::endl;
*/
}
struct DumbPlayerInfo{
MusicPlayer * who;
};
void DumbPlayer::mixer(void * player_, Uint8 * stream, int length){
DumbPlayerInfo * info = (DumbPlayerInfo *) player_;
DumbPlayer * player = (DumbPlayer *) info->who;
player->render(stream, length);
}
void DumbPlayer::pause(){
Mix_HookMusic(NULL, NULL);
}
void DumbPlayer::play(){
DumbPlayerInfo * me = new DumbPlayerInfo;
me->who = this;
Mix_HookMusic(mixer, me);
}
void DumbPlayer::poll(){
}
void DumbPlayer::setVolume(double volume){
this->volume = volume;
}
DumbPlayer::~DumbPlayer(){
DumbPlayerInfo * info = (DumbPlayerInfo*) Mix_GetMusicHookData();
Mix_HookMusic(NULL, NULL);
if (info != NULL){
delete info;
}
/* I'm pretty sure if we get this far then there is no chance
* that our mixer function will still be active.
*/
duh_end_sigrenderer(renderer);
unload_duh(music_file);
}
struct GMEInfo{
GMEPlayer * player;
};
GMEPlayer::GMEPlayer(const char * path){
gme_err_t fail = gme_open_file(path, &emulator, Sound::FREQUENCY);
if (fail != NULL){
Global::debug(0) << "GME load error for " << path << ": " << fail << std::endl;
throw std::exception();
}
emulator->start_track(0);
Global::debug(0) << "Loaded GME file " << path << std::endl;
}
void GMEPlayer::mixer(void * arg, Uint8 * stream, int length){
GMEInfo * info = (GMEInfo*) arg;
info->player->render(stream, length);
}
void GMEPlayer::render(Uint8 * stream, int length){
/* length/2 to convert bytes to short */
emulator->play(length / 2, (short*) stream);
/*
short large = 0;
short small = 0;
for (int i = 0; i < length / 2; i++){
// ((short *) stream)[i] *= 2;
short z = ((short *) stream)[i];
if (z < small){
small = z;
}
if (z > large){
large = z;
}
}
Global::debug(0) << "Largest " << large << " Smallest " << small << std::endl;
*/
}
void GMEPlayer::play(){
GMEInfo * me = new GMEInfo;
me->player = this;
Mix_HookMusic(mixer, me);
}
void GMEPlayer::poll(){
}
void GMEPlayer::pause(){
}
void GMEPlayer::setVolume(double volume){
}
GMEPlayer::~GMEPlayer(){
GMEInfo * info = (GMEInfo*) Mix_GetMusicHookData();
Mix_HookMusic(NULL, NULL);
if (info != NULL){
delete info;
}
delete emulator;
}
#ifdef HAVE_OGG
OggPlayer::OggPlayer(const char * path){
music = Mix_LoadMUS(path);
}
void OggPlayer::play(){
Mix_PlayMusic(music, -1);
}
void OggPlayer::poll(){
}
void OggPlayer::pause(){
Mix_PauseMusic();
}
void OggPlayer::setVolume(double volume){
Mix_VolumeMusic(volume * MIX_MAX_VOLUME);
}
OggPlayer::~OggPlayer(){
Mix_FreeMusic(music);
}
#endif /* OGG */
#endif /* SDL */
}

File Metadata

Mime Type
text/x-c++
Expires
Sat, Nov 14, 5:46 PM (13 h, 41 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
139794
Default Alt Text
music-player.cpp (8 KB)

Event Timeline