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Play with prebuffer

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This commit is contained in:
tudnai 2022-04-13 18:59:33 -07:00
parent 47cae17e6d
commit 38c47db369
1 changed files with 79 additions and 30 deletions
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109
src/dev/audio/speaker.c
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@ -601,6 +601,80 @@ INLINE void spkr_debug_spike() {
}
void spkr_play_with_prebuf() {
ALenum state;
alGetSourcei( spkr_src[SPKR_SRC_GAME_SFX], AL_SOURCE_STATE, &state );
// al_check_error();
switch (state) {
case AL_PAUSED:
// should not be paused
alSourcePlay(spkr_src[SPKR_SRC_GAME_SFX]);
break;
case AL_PLAYING:
// already playing, no need to do anything
break;
case AL_INITIAL:
case AL_STOPPED:
default:
if (--freeBuffers < 0) {
printf("freeBuffer < 0 (%i)\n", freeBuffers);
freeBuffers = 0;
}
// Normal Sound Buffer Feed
else {
const int buf_len = round((double)spkr_buf_size + spkr_extra_buf) * sizeof(spkr_sample_t) * 2;
// const int buf_len = 500;
// printf("buf_len=%i\n", buf_len);
const spkr_sample_t * silent_samples = spkr_samples + spkr_buf_size * 100;
alBufferData(spkr_buffers[freeBuffers], AL_FORMAT_STEREO16, silent_samples, buf_len, spkr_sample_rate);
al_check_error();
alSourceQueueBuffers(spkr_src[SPKR_SRC_GAME_SFX], 1, &spkr_buffers[freeBuffers]);
al_check_error();
}
// no we can play this empty buffer first and then later on the real one
alSourcePlay(spkr_src[SPKR_SRC_GAME_SFX]);
break;
}
}
void spkr_play_with_pause() {
ALenum state;
alGetSourcei( spkr_src[SPKR_SRC_GAME_SFX], AL_SOURCE_STATE, &state );
// al_check_error();
switch (state) {
case AL_PAUSED:
if ( --playDelay < 0 ) {
alSourcePlay(spkr_src[SPKR_SRC_GAME_SFX]);
playDelay = SPKR_PLAY_DELAY;
}
break;
case AL_PLAYING:
// already playing
break;
case AL_INITIAL:
case AL_STOPPED:
default:
alSourcePlay(spkr_src[SPKR_SRC_GAME_SFX]);
// this is so we will set state to AL_PAUSED immediately
// As a result there will be an extra queued buffer
// which gives us a glitch free sound
alSourcePause(spkr_src[SPKR_SRC_GAME_SFX]);
playDelay = SPKR_PLAY_DELAY;
break;
}
}
void spkr_update() {
if ( ++spkr_frame_cntr >= spkr_fps_divider ) {
spkr_frame_cntr = 0;
@ -669,6 +743,8 @@ void spkr_update() {
// //spkr_samples[sample_idx] = spkr_level;
// memset(spkr_samples + spkr_sample_idx, spkr_level, spkr_buf_alloc_size * DEFAULT_FPS - spkr_sample_idx);
spkr_play_with_prebuf();
if (--freeBuffers < 0) {
printf("freeBuffer < 0 (%i)\n", freeBuffers);
freeBuffers = 0;
@ -682,8 +758,7 @@ void spkr_update() {
spkr_samples[ spkr_sample_last_idx++ ] = spkr_level; // stereo
}
int buf_len = round((double)spkr_buf_size + spkr_extra_buf) * sizeof(spkr_sample_t);
const int buf_len = round((double)spkr_buf_size + spkr_extra_buf) * sizeof(spkr_sample_t);
// digital filtering the audio stream -- most notably smoothing
spkr_filter(buf_len);
@ -694,34 +769,8 @@ void spkr_update() {
al_check_error();
}
}
ALenum state;
alGetSourcei( spkr_src[SPKR_SRC_GAME_SFX], AL_SOURCE_STATE, &state );
// al_check_error();
switch (state) {
case AL_PAUSED:
if ( --playDelay < 0 ) {
alSourcePlay(spkr_src[SPKR_SRC_GAME_SFX]);
playDelay = SPKR_PLAY_DELAY;
}
break;
case AL_PLAYING:
// already playing
break;
case AL_INITIAL:
case AL_STOPPED:
default:
alSourcePlay(spkr_src[SPKR_SRC_GAME_SFX]);
// this is so we will set state to AL_PAUSED immediately
// As a result there will be an extra queued buffer
// which gives us a glitch free sound
alSourcePause(spkr_src[SPKR_SRC_GAME_SFX]);
playDelay = SPKR_PLAY_DELAY;
break;
}
// spkr_play_with_pause();
// int dst = 0;
int src = spkr_buf_size + spkr_extra_buf;