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This commit is contained in:
David Madl
2026-03-22 08:50:39 +01:00
parent 25e5cc19d0
commit 3cf9607549
1 changed files with 10 additions and 3 deletions
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13
app/src/main/cpp/PlaybackEngine.cpp
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@@ -54,7 +54,6 @@ static bool read_mp3(std::string filename, std::vector<float>& samples) {
return ok1 && ok2; return ok1 && ok2;
} }
struct RbLogger : public RubberBand::RubberBandStretcher::Logger { struct RbLogger : public RubberBand::RubberBandStretcher::Logger {
virtual void log(const char *s) { virtual void log(const char *s) {
LOGI("%s", s); LOGI("%s", s);
@@ -83,6 +82,8 @@ PlaybackEngine::PlaybackEngine(std::string filesDir, int resid):
android_fd(0), android_fd(0),
haveTimeRatio(false), haveTimeRatio(false),
timeRatio(1.0), timeRatio(1.0),
// these 3 values are preliminary -- will be set from MixingPlayer defaults in the ctor body below
playbackRate(48000), playbackRate(48000),
numOutChannels(2), numOutChannels(2),
numInChannels(2) numInChannels(2)
@@ -90,21 +91,27 @@ PlaybackEngine::PlaybackEngine(std::string filesDir, int resid):
LOGI("PlaybackEngine()"); LOGI("PlaybackEngine()");
LOGI("NDK LOG_LEVEL=%d", LOG_LEVEL); LOGI("NDK LOG_LEVEL=%d", LOG_LEVEL);
// NDK LOG_LEVEL=3 (DEBUG) // NDK LOG_LEVEL=3 (DEBUG)
// load "bump" sound effect
std::vector<float> samples; std::vector<float> samples;
bool is_ok = read_mp3(mFilesDir + "/" + std::to_string(resid) + ".mp3", samples); bool is_ok = read_mp3(mFilesDir + "/" + std::to_string(resid) + ".mp3", samples);
LOGI("read_mp3() is_ok=%d", is_ok); LOGI("read_mp3() for bump effect, is_ok=%d", is_ok);
mPlayer = new MixingPlayer(samples); mPlayer = new MixingPlayer(samples);
int32_t res = mPlayer->startAudio(); int32_t res = mPlayer->startAudio();
playbackRate.store(mPlayer->getRate()); playbackRate.store(mPlayer->getRate());
numOutChannels.store(mPlayer->getNumChannels()); numOutChannels.store(mPlayer->getNumChannels());
LOGI("startAudio() = %d rate=%d channels=%d", res, playbackRate.load(), numOutChannels.load()); LOGI("startAudio() = %d rate=%d channels=%d", res, playbackRate.load(), numOutChannels.load());
// configure stretcher and start musicFeedThread()
initRubberBand(); initRubberBand();
} }
void PlaybackEngine::initRubberBand() { void PlaybackEngine::initRubberBand() {
// TODO: check mp3 actual sample rate, and adapt to 48000 Hz playback here // we do not yet have a music file with actual sampling rate, so set the default ratio
stretcher.setTimeRatio(1.0); stretcher.setTimeRatio(1.0);
stretcher.setPitchScale(1.0); stretcher.setPitchScale(1.0);
stretcher.setDebugLevel(1); // 1: errors only. generally 0..4 stretcher.setDebugLevel(1); // 1: errors only. generally 0..4
// feed samples into 'stretcher' and read bogus output // feed samples into 'stretcher' and read bogus output