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emscripten-audio-stream: resume stream from correct position after pausing

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Sebastian Krzyszkowiak 2019-12-09 02:50:59 +01:00
parent 4a0e7a77cc
commit 2adbb131e6
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GPG key ID: E8F235CF3BDBC3FF
2 changed files with 9 additions and 1 deletions
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8
src/emscripten-audio-stream.c
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@ -60,6 +60,7 @@ SYMBOL_EXPORT ALLEGRO_AUDIO_STREAM *emscripten_load_audio_stream(const char* fil
stream->sample = al_load_sample(filename);
stream->instance = al_create_sample_instance(stream->sample);
stream->old_pos = 0.0;
stream->pause_pos = 0.0;
al_set_sample_instance_playing(stream->instance, true);
return (ALLEGRO_AUDIO_STREAM*)stream;
}
@ -69,6 +70,7 @@ SYMBOL_EXPORT ALLEGRO_AUDIO_STREAM *emscripten_load_audio_stream_f(ALLEGRO_FILE
stream->sample = al_load_sample_f(file, ident);
stream->instance = al_create_sample_instance(stream->sample);
stream->old_pos = 0.0;
stream->pause_pos = 0.0;
al_set_sample_instance_playing(stream->instance, true);
return (ALLEGRO_AUDIO_STREAM*)stream;
}
@ -80,6 +82,11 @@ SYMBOL_EXPORT bool emscripten_set_audio_stream_gain(ALLEGRO_AUDIO_STREAM *stream
SYMBOL_EXPORT bool emscripten_set_audio_stream_playing(ALLEGRO_AUDIO_STREAM *stream, bool val) {
EMSCRIPTEN_AUDIO_STREAM *s = (EMSCRIPTEN_AUDIO_STREAM*)stream;
if (val && s->pause_pos) {
al_set_sample_instance_position(s->instance, s->pause_pos);
} else {
s->pause_pos = al_get_sample_instance_position(s->instance);
}
return al_set_sample_instance_playing(s->instance, val);
}
@ -101,6 +108,7 @@ SYMBOL_EXPORT bool emscripten_get_audio_stream_playing(ALLEGRO_AUDIO_STREAM *str
SYMBOL_EXPORT bool emscripten_rewind_audio_stream(ALLEGRO_AUDIO_STREAM *stream) {
EMSCRIPTEN_AUDIO_STREAM *s = (EMSCRIPTEN_AUDIO_STREAM*)stream;
s->pause_pos = 0.0;
return al_set_sample_instance_position(s->instance, 0);
}

2
src/emscripten-audio-stream.h
View file

@ -26,7 +26,7 @@
typedef struct {
ALLEGRO_SAMPLE* sample;
ALLEGRO_SAMPLE_INSTANCE* instance;
double old_pos;
double old_pos, pause_pos;
} EMSCRIPTEN_AUDIO_STREAM;
ALLEGRO_AUDIO_STREAM* emscripten_load_audio_stream(const char* filename, size_t buffer_count, unsigned int samples);