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Implement PCM sound with SDL_mixer

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kichikuou
2020-02-16 13:36:01 +09:00
parent 52313dd682
commit 6bd6bca7dc
2 changed files with 21 additions and 43 deletions
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src/sys/mako.cpp
+19 -37
View File
@@ -19,7 +19,9 @@
MAKO::MAKO(NACT* parent, const char* playlist) :
current_music(0),
next_loop(0),
nact(parent)
nact(parent),
mix_music(NULL),
mix_chunk(NULL)
{
int mix_init_flags = MIX_INIT_MID;
@@ -40,12 +42,9 @@ MAKO::MAKO(NACT* parent, const char* playlist) :
MAKO::~MAKO()
{
stop_pcm();
Mix_CloseAudio();
Mix_Quit();
#if defined(_USE_PCM)
PlaySound(NULL, NULL, SND_PURGE);
#endif
}
bool MAKO::load_playlist(const char* path)
@@ -132,16 +131,13 @@ void MAKO::get_mark(int* mark, int* loop)
void MAKO::play_pcm(int page, bool loop)
{
assert(false);
#if defined(_USE_PCM)
static char header[44] = {
'R' , 'I' , 'F' , 'F' , 0x00, 0x00, 0x00, 0x00, 'W' , 'A' , 'V' , 'E' , 'f' , 'm' , 't' , ' ' ,
0x10, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x40, 0x1f, 0x00, 0x00, 0x40, 0x1f, 0x00, 0x00,
0x01, 0x00, 0x08, 0x00, 'd' , 'a' , 't' , 'a' , 0x00, 0x00, 0x00, 0x00
};
// 現在再生中のPCMを停止
PlaySound(NULL, NULL, SND_PURGE);
stop_pcm();
uint8* buffer = NULL;
int size;
@@ -149,19 +145,15 @@ void MAKO::play_pcm(int page, bool loop)
if((buffer = dri->load(_T("AWAV.DAT"), page, &size)) != NULL) {
// WAV形式 (Only You)
memcpy(wav, buffer, (size < MAX_SAMPLES) ? size : MAX_SAMPLES);
if(loop) {
PlaySound(wav, NULL, SND_ASYNC | SND_MEMORY | SND_LOOP);
} else {
PlaySound(wav, NULL, SND_ASYNC | SND_MEMORY);
}
mix_chunk = Mix_LoadWAV_RW(SDL_RWFromConstMem(buffer, size), 1 /* freesrc */);
free(buffer);
Mix_PlayChannel(-1, mix_chunk, loop ? -1 : 0);
} else if((buffer = dri->load(_T("AMSE.DAT"), page, &size)) != NULL) {
// AMSE形式 (乙女戦記)
int total = (size - 12) * 2 + 0x24;
int samples = (size - 12) * 2;
uint8* wav = (uint8*)malloc(total + 8);
memcpy(wav, header, 44);
wav[ 4] = (total >> 0) & 0xff;
wav[ 5] = (total >> 8) & 0xff;
@@ -171,40 +163,30 @@ void MAKO::play_pcm(int page, bool loop)
wav[41] = (samples >> 8) & 0xff;
wav[42] = (samples >> 16) & 0xff;
wav[43] = (samples >> 24) & 0xff;
for(int i = 12, p = 44; i < size && p < MAX_SAMPLES - 2; i++) {
for(int i = 12, p = 44; i < size; i++) {
wav[p++] = buffer[i] & 0xf0;
wav[p++] = (buffer[i] & 0x0f) << 4;
}
if(loop) {
PlaySound(wav, NULL, SND_ASYNC | SND_MEMORY | SND_LOOP);
} else {
PlaySound(wav, NULL, SND_ASYNC | SND_MEMORY);
}
free(buffer);
mix_chunk = Mix_LoadWAV_RW(SDL_RWFromConstMem(wav, total + 8), 1 /* freesrc */);
free(wav);
Mix_PlayChannel(-1, mix_chunk, loop ? -1 : 0);
}
#endif
}
void MAKO::stop_pcm()
{
#if defined(_USE_PCM)
PlaySound(NULL, NULL, SND_PURGE);
#endif
Mix_HaltChannel(-1);
if (mix_chunk) {
Mix_FreeChunk(mix_chunk);
mix_chunk = NULL;
}
}
bool MAKO::check_pcm()
{
// 再生中でtrue
#if defined(_USE_PCM)
static char null_wav[45] = {
'R' , 'I' , 'F' , 'F' , 0x25, 0x00, 0x00, 0x00, 'W' , 'A' , 'V' , 'E' , 'f' , 'm' , 't' , ' ' ,
0x10, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x40, 0x1f, 0x00, 0x00, 0x40, 0x1f, 0x00, 0x00,
0x01, 0x00, 0x08, 0x00, 'd' , 'a' , 't' , 'a' , 0x01, 0x00, 0x00, 0x00, 0x00
};
return PlaySound(null_wav, NULL, SND_ASYNC | SND_MEMORY | SND_NOSTOP) ? false : true;
#else
return false;
#endif
return Mix_Playing(-1) != 0;
}
src/sys/mako.h
+2 -6
View File
@@ -17,10 +17,6 @@
#if !defined(__EMSCRIPTEN__) && !defined(__ANDROID__)
#include <SDL_mixer.h>
#define MAX_SAMPLES (128 * 1024)
//#define _USE_PCM
class MAKO
{
public:
@@ -55,9 +51,9 @@ private:
NACT* nact;
std::vector<const char*> playlist;
Mix_Music *mix_music;
std::vector<uint8> smf;
char wav[MAX_SAMPLES];
Mix_Music *mix_music;
Mix_Chunk *mix_chunk;
};
#else // Emscripten or Android