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Actualitzat jail_audio

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Sergio
2025-02-21 12:33:08 +01:00
parent 134b679a75
commit 370120345e
2 changed files with 224 additions and 48 deletions
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250
source/jail_audio.cpp
View File

@@ -1,10 +1,14 @@
#ifndef JA_USESDLMIXER
#include "jail_audio.h"
#include "stb_vorbis.c"
#include <SDL2/SDL.h>
#include <stdio.h>
#include <SDL2/SDL_log.h> // for SDL_Log, SDL_LogSetPriority, SDL_LOG_CAT...
#include <SDL2/SDL_rwops.h> // for SDL_RWFromMem
#include <SDL2/SDL_timer.h> // for SDL_GetTicks
#include <stdint.h> // for uint8_t, uint32_t
#include <stdio.h> // for NULL, fseek, fclose, fopen, fread, ftell
#include <stdlib.h> // for free, malloc
#include "stb_vorbis.c" // for stb_vorbis_decode_memory
#define JA_MAX_SIMULTANEOUS_CHANNELS 5
constexpr int JA_MAX_SIMULTANEOUS_CHANNELS = 20;
struct JA_Sound_t {
Uint32 length {0};
@@ -20,6 +24,7 @@ struct JA_Channel_t {
struct JA_Music_t {
int samples {0};
Uint32 length {0};
int pos {0};
int times {0};
short* output {NULL};
@@ -32,19 +37,41 @@ JA_Channel_t channels[JA_MAX_SIMULTANEOUS_CHANNELS];
int JA_freq {48000};
SDL_AudioFormat JA_format {AUDIO_S16};
Uint8 JA_channels {2};
int JA_volume = 128;
int JA_musicVolume = 128;
int JA_soundVolume = 64;
bool JA_musicEnabled = true;
bool JA_soundEnabled = true;
SDL_AudioDeviceID sdlAudioDevice = 0;
bool fading = false;
int fade_start_time;
int fade_duration;
int fade_initial_volume;
void audioCallback(void * userdata, uint8_t * stream, int len) {
SDL_memset(stream, 0, len);
if (current_music != NULL && current_music->state == JA_MUSIC_PLAYING) {
const int size = SDL_min(len, current_music->samples*2-current_music->pos);
SDL_MixAudioFormat(stream, (Uint8*)(current_music->output+current_music->pos), AUDIO_S16, size, JA_volume);
current_music->pos += size/2;
int volume = JA_musicVolume;
if (fading) {
int time = SDL_GetTicks();
if (time > (fade_start_time+fade_duration)) {
fading = false;
current_music->pos = 0;
current_music->state = JA_MUSIC_STOPPED;
volume = 0;
} else {
const int time_passed = time - fade_start_time;
const float percent = (float)time_passed / (float)fade_duration;
volume = JA_musicVolume * (1.0 - percent);
}
}
const int size = SDL_min(len, current_music->length - current_music->pos);
SDL_MixAudioFormat(stream, (Uint8*)(current_music->output)+current_music->pos, AUDIO_S16, size, volume);
current_music->pos += size;
if (size < len) {
if (current_music->times != 0) {
SDL_MixAudioFormat(stream+size, (Uint8*)current_music->output, AUDIO_S16, len-size, JA_volume);
current_music->pos = (len-size)/2;
SDL_MixAudioFormat(stream+size, (Uint8*)current_music->output, AUDIO_S16, len-size, volume);
current_music->pos = len-size;
if (current_music->times > 0) current_music->times--;
} else {
current_music->pos = 0;
@@ -56,11 +83,11 @@ void audioCallback(void * userdata, uint8_t * stream, int len) {
for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++) {
if (channels[i].state == JA_CHANNEL_PLAYING) {
const int size = SDL_min(len, channels[i].sound->length - channels[i].pos);
SDL_MixAudioFormat(stream, channels[i].sound->buffer + channels[i].pos, AUDIO_S16, size, JA_volume/2);
SDL_MixAudioFormat(stream, channels[i].sound->buffer + channels[i].pos, AUDIO_S16, size, JA_soundVolume);
channels[i].pos += size;
if (size < len) {
if (channels[i].times != 0) {
SDL_MixAudioFormat(stream + size, channels[i].sound->buffer, AUDIO_S16, len-size, JA_volume/2);
SDL_MixAudioFormat(stream + size, channels[i].sound->buffer, AUDIO_S16, len-size, JA_soundVolume);
channels[i].pos = len-size;
if (channels[i].times > 0) channels[i].times--;
} else {
@@ -71,13 +98,19 @@ void audioCallback(void * userdata, uint8_t * stream, int len) {
}
}
void JA_Init(const int freq, const SDL_AudioFormat format, const int channels) {
void JA_Init(const int freq, const SDL_AudioFormat format, const int channels)
{
#ifdef DEBUG
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_DEBUG);
#endif
JA_freq = freq;
JA_format = format;
JA_channels = channels;
SDL_AudioSpec audioSpec{JA_freq, JA_format, JA_channels, 0, 1024, 0, 0, audioCallback, NULL};
if (sdlAudioDevice != 0) SDL_CloseAudioDevice(sdlAudioDevice);
sdlAudioDevice = SDL_OpenAudioDevice(NULL, 0, &audioSpec, NULL, 0);
SDL_PauseAudioDevice(sdlAudioDevice, 0);
}
@@ -87,9 +120,35 @@ void JA_Quit() {
sdlAudioDevice = 0;
}
JA_Music_t *JA_LoadMusic(const char* filename) {
JA_Music_t *JA_LoadMusic(Uint8* buffer, Uint32 length)
{
int chan, samplerate;
JA_Music_t *music = new JA_Music_t();
music->samples = stb_vorbis_decode_memory(buffer, length, &chan, &samplerate, &music->output);
// [RZC 28/08/22] Abans el descomprimiem mentre el teniem obert
// music->samples = stb_vorbis_decode_filename(filename, &chan, &samplerate, &music->output);
SDL_AudioCVT cvt;
SDL_BuildAudioCVT(&cvt, AUDIO_S16, chan, samplerate, JA_format, JA_channels, JA_freq);
if (cvt.needed) {
cvt.len = music->samples * chan * 2;
music->length = cvt.len;
cvt.buf = (Uint8 *) SDL_malloc(cvt.len * cvt.len_mult);
SDL_memcpy(cvt.buf, music->output, cvt.len);
SDL_ConvertAudio(&cvt);
free(music->output);
music->output = (short*)cvt.buf;
}
music->length = music->samples * chan * 2;
music->pos = 0;
music->state = JA_MUSIC_STOPPED;
return music;
}
JA_Music_t *JA_LoadMusic(const char* filename)
{
// [RZC 28/08/22] Carreguem primer el arxiu en memòria i després el descomprimim. Es algo més rapid.
FILE *f = fopen(filename, "rb");
fseek(f, 0, SEEK_END);
@@ -99,30 +158,17 @@ JA_Music_t *JA_LoadMusic(const char* filename) {
if (fread(buffer, fsize, 1, f)!=1) return NULL;
fclose(f);
JA_Music_t *music = new JA_Music_t();
JA_Music_t *music = JA_LoadMusic(buffer, fsize);
music->samples = stb_vorbis_decode_memory(buffer, fsize, &chan, &samplerate, &music->output);
free(buffer);
// [RZC 28/08/22] Abans el descomprimiem mentre el teniem obert
// music->samples = stb_vorbis_decode_filename(filename, &chan, &samplerate, &music->output);
SDL_AudioCVT cvt;
SDL_BuildAudioCVT(&cvt, AUDIO_S16, chan, samplerate, JA_format, JA_channels, JA_freq);
if (cvt.needed) {
cvt.len = music->samples * chan * 2;
cvt.buf = (Uint8 *) SDL_malloc(cvt.len * cvt.len_mult);
SDL_memcpy(cvt.buf, music->output, cvt.len);
SDL_ConvertAudio(&cvt);
free(music->output);
music->output = (short*)cvt.buf;
}
music->pos = 0;
music->state = JA_MUSIC_STOPPED;
return music;
}
void JA_PlayMusic(JA_Music_t *music, const int loop) {
void JA_PlayMusic(JA_Music_t *music, const int loop)
{
if (!JA_musicEnabled) return;
if (current_music != NULL) {
current_music->pos = 0;
current_music->state = JA_MUSIC_STOPPED;
@@ -133,23 +179,45 @@ void JA_PlayMusic(JA_Music_t *music, const int loop) {
current_music->times = loop;
}
void JA_PauseMusic() {
void JA_PauseMusic()
{
if (!JA_musicEnabled) return;
if (current_music == NULL || current_music->state == JA_MUSIC_INVALID) return;
current_music->state = JA_MUSIC_PAUSED;
}
void JA_ResumeMusic() {
void JA_ResumeMusic()
{
if (!JA_musicEnabled) return;
if (current_music == NULL || current_music->state == JA_MUSIC_INVALID) return;
current_music->state = JA_MUSIC_PLAYING;
}
void JA_StopMusic() {
void JA_StopMusic()
{
if (!JA_musicEnabled) return;
if (current_music == NULL || current_music->state == JA_MUSIC_INVALID) return;
current_music->pos = 0;
current_music->state = JA_MUSIC_STOPPED;
}
void JA_FadeOutMusic(const int milliseconds)
{
if (!JA_musicEnabled) return;
if (current_music == NULL || current_music->state == JA_MUSIC_INVALID) return;
fading = true;
fade_start_time = SDL_GetTicks();
fade_duration = milliseconds;
fade_initial_volume = JA_musicVolume;
}
JA_Music_state JA_GetMusicState() {
if (!JA_musicEnabled) return JA_MUSIC_DISABLED;
if (current_music == NULL) return JA_MUSIC_INVALID;
return current_music->state;
}
@@ -160,6 +228,35 @@ void JA_DeleteMusic(JA_Music_t *music) {
delete music;
}
int JA_SetMusicVolume(int volume)
{
JA_musicVolume = volume > 128 ? 128 : volume < 0 ? 0 : volume;
return JA_musicVolume;
}
void JA_SetMusicPosition(float value)
{
if (!current_music) return;
current_music->pos = value * JA_freq;
}
float JA_GetMusicPosition()
{
if (!current_music) return 0;
return float(current_music->pos)/float(JA_freq);
}
void JA_EnableMusic(const bool value)
{
if (!value && current_music != NULL && current_music->state==JA_MUSIC_PLAYING) JA_StopMusic();
JA_musicEnabled = value;
}
JA_Sound_t *JA_NewSound(Uint8* buffer, Uint32 length) {
JA_Sound_t *sound = new JA_Sound_t();
sound->buffer = buffer;
@@ -167,6 +264,24 @@ JA_Sound_t *JA_NewSound(Uint8* buffer, Uint32 length) {
return sound;
}
JA_Sound_t *JA_LoadSound(uint8_t* buffer, uint32_t size) {
JA_Sound_t *sound = new JA_Sound_t();
SDL_AudioSpec wavSpec;
SDL_LoadWAV_RW(SDL_RWFromMem(buffer, size),1, &wavSpec, &sound->buffer, &sound->length);
SDL_AudioCVT cvt;
SDL_BuildAudioCVT(&cvt, wavSpec.format, wavSpec.channels, wavSpec.freq, JA_format, JA_channels, JA_freq);
cvt.len = sound->length;
cvt.buf = (Uint8 *) SDL_malloc(cvt.len * cvt.len_mult);
SDL_memcpy(cvt.buf, sound->buffer, sound->length);
SDL_ConvertAudio(&cvt);
SDL_FreeWAV(sound->buffer);
sound->buffer = cvt.buf;
sound->length = cvt.len_cvt;
return sound;
}
JA_Sound_t *JA_LoadSound(const char* filename) {
JA_Sound_t *sound = new JA_Sound_t();
SDL_AudioSpec wavSpec;
@@ -185,7 +300,10 @@ JA_Sound_t *JA_LoadSound(const char* filename) {
return sound;
}
int JA_PlaySound(JA_Sound_t *sound, const int loop) {
int JA_PlaySound(JA_Sound_t *sound, const int loop)
{
if (!JA_soundEnabled) return -1;
int channel = 0;
while (channel < JA_MAX_SIMULTANEOUS_CHANNELS && channels[channel].state != JA_CHANNEL_FREE) { channel++; }
if (channel == JA_MAX_SIMULTANEOUS_CHANNELS) channel = 0;
@@ -197,7 +315,21 @@ int JA_PlaySound(JA_Sound_t *sound, const int loop) {
return channel;
}
void JA_DeleteSound(JA_Sound_t *sound) {
int JA_PlaySoundOnChannel(JA_Sound_t *sound, const int channel, const int loop)
{
if (!JA_soundEnabled) return -1;
if (channel >= JA_MAX_SIMULTANEOUS_CHANNELS) return -1;
channels[channel].sound = sound;
channels[channel].times = loop;
channels[channel].pos = 0;
channels[channel].state = JA_CHANNEL_PLAYING;
return channel;
}
void JA_DeleteSound(JA_Sound_t *sound)
{
for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++) {
if (channels[i].sound == sound) JA_StopChannel(i);
}
@@ -205,7 +337,10 @@ void JA_DeleteSound(JA_Sound_t *sound) {
delete sound;
}
void JA_PauseChannel(const int channel) {
void JA_PauseChannel(const int channel)
{
if (!JA_soundEnabled) return;
if (channel == -1) {
for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++) {
if (channels[i].state == JA_CHANNEL_PLAYING) channels[i].state = JA_CHANNEL_PAUSED;
@@ -215,7 +350,10 @@ void JA_PauseChannel(const int channel) {
}
}
void JA_ResumeChannel(const int channel) {
void JA_ResumeChannel(const int channel)
{
if (!JA_soundEnabled) return;
if (channel == -1) {
for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++) {
if (channels[i].state == JA_CHANNEL_PAUSED) channels[i].state = JA_CHANNEL_PLAYING;
@@ -225,7 +363,10 @@ void JA_ResumeChannel(const int channel) {
}
}
void JA_StopChannel(const int channel) {
void JA_StopChannel(const int channel)
{
if (!JA_soundEnabled) return;
if (channel == -1) {
for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++) {
channels[i].state = JA_CHANNEL_FREE;
@@ -239,13 +380,34 @@ void JA_StopChannel(const int channel) {
}
}
JA_Channel_state JA_GetChannelState(const int channel) {
JA_Channel_state JA_GetChannelState(const int channel)
{
if (!JA_soundEnabled) return JA_SOUND_DISABLED;
if (channel < 0 || channel >= JA_MAX_SIMULTANEOUS_CHANNELS) return JA_CHANNEL_INVALID;
return channels[channel].state;
}
int JA_SetVolume(int volume) {
JA_volume = volume > 128 ? 128 : volume < 0 ? 0 : volume;
return JA_volume;
int JA_SetSoundVolume(int volume)
{
JA_soundVolume = volume > 128 ? 128 : volume < 0 ? 0 : volume;
return JA_soundVolume;
}
void JA_EnableSound(const bool value)
{
for (int i = 0; i < JA_MAX_SIMULTANEOUS_CHANNELS; i++)
{
if (channels[i].state == JA_CHANNEL_PLAYING) JA_StopChannel(i);
}
JA_soundEnabled = value;
}
int JA_SetVolume(int volume)
{
JA_musicVolume = volume > 128 ? 128 : volume < 0 ? 0 : volume;
JA_soundVolume = JA_musicVolume/2;
return JA_musicVolume;
}
#endif

20
source/jail_audio.h
View File

@@ -1,8 +1,12 @@
#pragma once
#include <SDL2/SDL.h>
enum JA_Channel_state { JA_CHANNEL_INVALID, JA_CHANNEL_FREE, JA_CHANNEL_PLAYING, JA_CHANNEL_PAUSED };
enum JA_Music_state { JA_MUSIC_INVALID, JA_MUSIC_PLAYING, JA_MUSIC_PAUSED, JA_MUSIC_STOPPED };
#include <SDL2/SDL_audio.h> // for SDL_AudioFormat
#include <SDL2/SDL_stdinc.h> // for Uint32, Uint8
struct JA_Music_t; // lines 8-8
struct JA_Sound_t; // lines 7-7
enum JA_Channel_state { JA_CHANNEL_INVALID, JA_CHANNEL_FREE, JA_CHANNEL_PLAYING, JA_CHANNEL_PAUSED, JA_SOUND_DISABLED };
enum JA_Music_state { JA_MUSIC_INVALID, JA_MUSIC_PLAYING, JA_MUSIC_PAUSED, JA_MUSIC_STOPPED, JA_MUSIC_DISABLED };
struct JA_Sound_t;
struct JA_Music_t;
@@ -11,20 +15,30 @@ void JA_Init(const int freq, const SDL_AudioFormat format, const int channels);
void JA_Quit();
JA_Music_t *JA_LoadMusic(const char* filename);
JA_Music_t *JA_LoadMusic(Uint8* buffer, Uint32 length);
void JA_PlayMusic(JA_Music_t *music, const int loop = -1);
void JA_PauseMusic();
void JA_ResumeMusic();
void JA_StopMusic();
void JA_FadeOutMusic(const int milliseconds);
JA_Music_state JA_GetMusicState();
void JA_DeleteMusic(JA_Music_t *music);
int JA_SetMusicVolume(int volume);
void JA_SetMusicPosition(float value);
float JA_GetMusicPosition();
void JA_EnableMusic(const bool value);
JA_Sound_t *JA_NewSound(Uint8* buffer, Uint32 length);
JA_Sound_t *JA_LoadSound(Uint8* buffer, Uint32 length);
JA_Sound_t *JA_LoadSound(const char* filename);
int JA_PlaySound(JA_Sound_t *sound, const int loop = 0);
int JA_PlaySoundOnChannel(JA_Sound_t *sound, const int channel, const int loop = 0);
void JA_PauseChannel(const int channel);
void JA_ResumeChannel(const int channel);
void JA_StopChannel(const int channel);
JA_Channel_state JA_GetChannelState(const int channel);
void JA_DeleteSound(JA_Sound_t *sound);
int JA_SetSoundVolume(int volume);
void JA_EnableSound(const bool value);
int JA_SetVolume(int volume);