forked from len0rd/rockbox
Port of Duke Nukem 3D
This ports Fabien Sanglard's Chocolate Duke to run on a version of SDL for Rockbox. Change-Id: I8f2c4c78af19de10c1633ed7bb7a997b43256dd9
This commit is contained in:
Franklin Wei
parent
01c6dcf6c7
commit
a855d62025
994 changed files with 336924 additions and 15 deletions
346
apps/plugins/sdl/SDL_mixer/music_mod.c
Normal file
346
apps/plugins/sdl/SDL_mixer/music_mod.c
Normal file
|
|
@ -0,0 +1,346 @@
|
|||
/*
|
||||
SDL_mixer: An audio mixer library based on the SDL library
|
||||
Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
|
||||
|
||||
This software is provided 'as-is', without any express or implied
|
||||
warranty. In no event will the authors be held liable for any damages
|
||||
arising from the use of this software.
|
||||
|
||||
Permission is granted to anyone to use this software for any purpose,
|
||||
including commercial applications, and to alter it and redistribute it
|
||||
freely, subject to the following restrictions:
|
||||
|
||||
1. The origin of this software must not be misrepresented; you must not
|
||||
claim that you wrote the original software. If you use this software
|
||||
in a product, an acknowledgment in the product documentation would be
|
||||
appreciated but is not required.
|
||||
2. Altered source versions must be plainly marked as such, and must not be
|
||||
misrepresented as being the original software.
|
||||
3. This notice may not be removed or altered from any source distribution.
|
||||
*/
|
||||
|
||||
/* $Id: music_mod.c 4211 2008-12-08 00:27:32Z slouken $ */
|
||||
|
||||
#ifdef MOD_MUSIC
|
||||
|
||||
/* This file supports MOD tracker music streams */
|
||||
|
||||
#include "SDL_mixer.h"
|
||||
#include "dynamic_mod.h"
|
||||
#include "music_mod.h"
|
||||
|
||||
#include "mikmod.h"
|
||||
|
||||
#define SDL_SURROUND
|
||||
#ifdef SDL_SURROUND
|
||||
#define MAX_OUTPUT_CHANNELS 6
|
||||
#else
|
||||
#define MAX_OUTPUT_CHANNELS 2
|
||||
#endif
|
||||
|
||||
/* Reference for converting mikmod output to 4/6 channels */
|
||||
static int current_output_channels;
|
||||
static Uint16 current_output_format;
|
||||
|
||||
static int music_swap8;
|
||||
static int music_swap16;
|
||||
|
||||
/* Initialize the MOD player, with the given mixer settings
|
||||
This function returns 0, or -1 if there was an error.
|
||||
*/
|
||||
int MOD_init(SDL_AudioSpec *mixerfmt)
|
||||
{
|
||||
CHAR *list;
|
||||
|
||||
if ( !Mix_Init(MIX_INIT_MOD) ) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
/* Set the MikMod music format */
|
||||
music_swap8 = 0;
|
||||
music_swap16 = 0;
|
||||
switch (mixerfmt->format) {
|
||||
|
||||
case AUDIO_U8:
|
||||
case AUDIO_S8: {
|
||||
if ( mixerfmt->format == AUDIO_S8 ) {
|
||||
music_swap8 = 1;
|
||||
}
|
||||
*mikmod.md_mode = 0;
|
||||
}
|
||||
break;
|
||||
|
||||
case AUDIO_S16LSB:
|
||||
case AUDIO_S16MSB: {
|
||||
/* See if we need to correct MikMod mixing */
|
||||
#if SDL_BYTEORDER == SDL_LIL_ENDIAN
|
||||
if ( mixerfmt->format == AUDIO_S16MSB ) {
|
||||
#else
|
||||
if ( mixerfmt->format == AUDIO_S16LSB ) {
|
||||
#endif
|
||||
music_swap16 = 1;
|
||||
}
|
||||
*mikmod.md_mode = DMODE_16BITS;
|
||||
}
|
||||
break;
|
||||
|
||||
default: {
|
||||
Mix_SetError("Unknown hardware audio format");
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
current_output_channels = mixerfmt->channels;
|
||||
current_output_format = mixerfmt->format;
|
||||
if ( mixerfmt->channels > 1 ) {
|
||||
if ( mixerfmt->channels > MAX_OUTPUT_CHANNELS ) {
|
||||
Mix_SetError("Hardware uses more channels than mixerfmt");
|
||||
return -1;
|
||||
}
|
||||
*mikmod.md_mode |= DMODE_STEREO;
|
||||
}
|
||||
*mikmod.md_mixfreq = mixerfmt->freq;
|
||||
*mikmod.md_device = 0;
|
||||
*mikmod.md_volume = 96;
|
||||
*mikmod.md_musicvolume = 128;
|
||||
*mikmod.md_sndfxvolume = 128;
|
||||
*mikmod.md_pansep = 128;
|
||||
*mikmod.md_reverb = 0;
|
||||
*mikmod.md_mode |= DMODE_HQMIXER|DMODE_SOFT_MUSIC|DMODE_SURROUND;
|
||||
|
||||
list = mikmod.MikMod_InfoDriver();
|
||||
if ( list )
|
||||
free(list);
|
||||
else
|
||||
mikmod.MikMod_RegisterDriver(mikmod.drv_nos);
|
||||
|
||||
list = mikmod.MikMod_InfoLoader();
|
||||
if ( list )
|
||||
free(list);
|
||||
else
|
||||
mikmod.MikMod_RegisterAllLoaders();
|
||||
|
||||
if ( mikmod.MikMod_Init(NULL) ) {
|
||||
Mix_SetError("%s", mikmod.MikMod_strerror(*mikmod.MikMod_errno));
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Uninitialize the music players */
|
||||
void MOD_exit(void)
|
||||
{
|
||||
if (mikmod.MikMod_Exit) {
|
||||
mikmod.MikMod_Exit();
|
||||
}
|
||||
}
|
||||
|
||||
/* Set the volume for a MOD stream */
|
||||
void MOD_setvolume(MODULE *music, int volume)
|
||||
{
|
||||
mikmod.Player_SetVolume((SWORD)volume);
|
||||
}
|
||||
|
||||
typedef struct
|
||||
{
|
||||
MREADER mr;
|
||||
long offset;
|
||||
long eof;
|
||||
SDL_RWops *rw;
|
||||
} LMM_MREADER;
|
||||
|
||||
BOOL LMM_Seek(struct MREADER *mr,long to,int dir)
|
||||
{
|
||||
LMM_MREADER* lmmmr = (LMM_MREADER*)mr;
|
||||
if ( dir == SEEK_SET ) {
|
||||
to += lmmmr->offset;
|
||||
}
|
||||
return (SDL_RWseek(lmmmr->rw, to, dir) < lmmmr->offset);
|
||||
}
|
||||
long LMM_Tell(struct MREADER *mr)
|
||||
{
|
||||
LMM_MREADER* lmmmr = (LMM_MREADER*)mr;
|
||||
return SDL_RWtell(lmmmr->rw) - lmmmr->offset;
|
||||
}
|
||||
BOOL LMM_Read(struct MREADER *mr,void *buf,size_t sz)
|
||||
{
|
||||
LMM_MREADER* lmmmr = (LMM_MREADER*)mr;
|
||||
return SDL_RWread(lmmmr->rw, buf, sz, 1);
|
||||
}
|
||||
int LMM_Get(struct MREADER *mr)
|
||||
{
|
||||
unsigned char c;
|
||||
LMM_MREADER* lmmmr = (LMM_MREADER*)mr;
|
||||
if ( SDL_RWread(lmmmr->rw, &c, 1, 1) ) {
|
||||
return c;
|
||||
}
|
||||
return EOF;
|
||||
}
|
||||
BOOL LMM_Eof(struct MREADER *mr)
|
||||
{
|
||||
long offset;
|
||||
LMM_MREADER* lmmmr = (LMM_MREADER*)mr;
|
||||
offset = LMM_Tell(mr);
|
||||
return offset >= lmmmr->eof;
|
||||
}
|
||||
MODULE *MikMod_LoadSongRW(SDL_RWops *rw, int maxchan)
|
||||
{
|
||||
LMM_MREADER lmmmr = {
|
||||
{ LMM_Seek, LMM_Tell, LMM_Read, LMM_Get, LMM_Eof },
|
||||
0,
|
||||
0,
|
||||
0
|
||||
};
|
||||
lmmmr.offset = SDL_RWtell(rw);
|
||||
SDL_RWseek(rw, 0, RW_SEEK_END);
|
||||
lmmmr.eof = SDL_RWtell(rw);
|
||||
SDL_RWseek(rw, lmmmr.offset, RW_SEEK_SET);
|
||||
lmmmr.rw = rw;
|
||||
return mikmod.Player_LoadGeneric((MREADER*)&lmmmr, maxchan, 0);
|
||||
}
|
||||
|
||||
/* Load a MOD stream from an SDL_RWops object */
|
||||
MODULE *MOD_new_RW(SDL_RWops *rw, int freerw)
|
||||
{
|
||||
MODULE *module;
|
||||
|
||||
/* Make sure the mikmod library is loaded */
|
||||
if ( !Mix_Init(MIX_INIT_MOD) ) {
|
||||
if ( freerw ) {
|
||||
SDL_RWclose(rw);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
module = MikMod_LoadSongRW(rw,64);
|
||||
if (!module) {
|
||||
Mix_SetError("%s", mikmod.MikMod_strerror(*mikmod.MikMod_errno));
|
||||
if ( freerw ) {
|
||||
SDL_RWclose(rw);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/* Stop implicit looping, fade out and other flags. */
|
||||
module->extspd = 1;
|
||||
module->panflag = 1;
|
||||
module->wrap = 0;
|
||||
module->loop = 0;
|
||||
#if 0 /* Don't set fade out by default - unfortunately there's no real way
|
||||
to query the status of the song or set trigger actions. Hum. */
|
||||
module->fadeout = 1;
|
||||
#endif
|
||||
|
||||
if ( freerw ) {
|
||||
SDL_RWclose(rw);
|
||||
}
|
||||
return module;
|
||||
}
|
||||
|
||||
/* Start playback of a given MOD stream */
|
||||
void MOD_play(MODULE *music)
|
||||
{
|
||||
mikmod.Player_Start(music);
|
||||
}
|
||||
|
||||
/* Return non-zero if a stream is currently playing */
|
||||
int MOD_playing(MODULE *music)
|
||||
{
|
||||
return mikmod.Player_Active();
|
||||
}
|
||||
|
||||
/* Play some of a stream previously started with MOD_play() */
|
||||
int MOD_playAudio(MODULE *music, Uint8 *stream, int len)
|
||||
{
|
||||
if (current_output_channels > 2) {
|
||||
int small_len = 2 * len / current_output_channels;
|
||||
int i;
|
||||
Uint8 *src, *dst;
|
||||
|
||||
mikmod.VC_WriteBytes((SBYTE *)stream, small_len);
|
||||
/* and extend to len by copying channels */
|
||||
src = stream + small_len;
|
||||
dst = stream + len;
|
||||
|
||||
switch (current_output_format & 0xFF) {
|
||||
case 8:
|
||||
for ( i=small_len/2; i; --i ) {
|
||||
src -= 2;
|
||||
dst -= current_output_channels;
|
||||
dst[0] = src[0];
|
||||
dst[1] = src[1];
|
||||
dst[2] = src[0];
|
||||
dst[3] = src[1];
|
||||
if (current_output_channels == 6) {
|
||||
dst[4] = src[0];
|
||||
dst[5] = src[1];
|
||||
}
|
||||
}
|
||||
break;
|
||||
case 16:
|
||||
for ( i=small_len/4; i; --i ) {
|
||||
src -= 4;
|
||||
dst -= 2 * current_output_channels;
|
||||
dst[0] = src[0];
|
||||
dst[1] = src[1];
|
||||
dst[2] = src[2];
|
||||
dst[3] = src[3];
|
||||
dst[4] = src[0];
|
||||
dst[5] = src[1];
|
||||
dst[6] = src[2];
|
||||
dst[7] = src[3];
|
||||
if (current_output_channels == 6) {
|
||||
dst[8] = src[0];
|
||||
dst[9] = src[1];
|
||||
dst[10] = src[2];
|
||||
dst[11] = src[3];
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
} else {
|
||||
mikmod.VC_WriteBytes((SBYTE *)stream, len);
|
||||
}
|
||||
if ( music_swap8 ) {
|
||||
Uint8 *dst;
|
||||
int i;
|
||||
|
||||
dst = stream;
|
||||
for ( i=len; i; --i ) {
|
||||
*dst++ ^= 0x80;
|
||||
}
|
||||
} else
|
||||
if ( music_swap16 ) {
|
||||
Uint8 *dst, tmp;
|
||||
int i;
|
||||
|
||||
dst = stream;
|
||||
for ( i=(len/2); i; --i ) {
|
||||
tmp = dst[0];
|
||||
dst[0] = dst[1];
|
||||
dst[1] = tmp;
|
||||
dst += 2;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Stop playback of a stream previously started with MOD_play() */
|
||||
void MOD_stop(MODULE *music)
|
||||
{
|
||||
mikmod.Player_Stop();
|
||||
}
|
||||
|
||||
/* Close the given MOD stream */
|
||||
void MOD_delete(MODULE *music)
|
||||
{
|
||||
mikmod.Player_Free(music);
|
||||
}
|
||||
|
||||
/* Jump (seek) to a given position (time is in seconds) */
|
||||
void MOD_jump_to_time(MODULE *music, double time)
|
||||
{
|
||||
mikmod.Player_SetPosition((UWORD)time);
|
||||
}
|
||||
|
||||
#endif /* MOD_MUSIC */
|
||||
Loading…
Add table
Add a link
Reference in a new issue