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-rw-r--r--servers/audio/audio_stream.cpp45
-rw-r--r--servers/audio/audio_stream.h16
-rw-r--r--servers/audio/effects/audio_stream_generator.cpp3
-rw-r--r--servers/audio/effects/audio_stream_generator.h2
4 files changed, 47 insertions, 19 deletions
diff --git a/servers/audio/audio_stream.cpp b/servers/audio/audio_stream.cpp
index 5544a09ac0..e1b391b823 100644
--- a/servers/audio/audio_stream.cpp
+++ b/servers/audio/audio_stream.cpp
@@ -74,11 +74,13 @@ void AudioStreamPlayback::seek(float p_time) {
}
}
-void AudioStreamPlayback::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
- if (GDVIRTUAL_CALL(_mix, p_buffer, p_rate_scale, p_frames)) {
- return;
+int AudioStreamPlayback::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
+ int ret;
+ if (GDVIRTUAL_CALL(_mix, p_buffer, p_rate_scale, p_frames, ret)) {
+ return ret;
}
WARN_PRINT_ONCE("AudioStreamPlayback::mix unimplemented!");
+ return 0;
}
void AudioStreamPlayback::_bind_methods() {
@@ -103,12 +105,14 @@ void AudioStreamPlaybackResampled::_begin_resample() {
mix_offset = 0;
}
-void AudioStreamPlaybackResampled::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
+int AudioStreamPlaybackResampled::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
float target_rate = AudioServer::get_singleton()->get_mix_rate();
float playback_speed_scale = AudioServer::get_singleton()->get_playback_speed_scale();
uint64_t mix_increment = uint64_t(((get_stream_sampling_rate() * p_rate_scale * playback_speed_scale) / double(target_rate)) * double(FP_LEN));
+ int mixed_frames_total = p_frames;
+
for (int i = 0; i < p_frames; i++) {
uint32_t idx = CUBIC_INTERP_HISTORY + uint32_t(mix_offset >> FP_BITS);
//standard cubic interpolation (great quality/performance ratio)
@@ -119,6 +123,11 @@ void AudioStreamPlaybackResampled::mix(AudioFrame *p_buffer, float p_rate_scale,
AudioFrame y2 = internal_buffer[idx - 1];
AudioFrame y3 = internal_buffer[idx - 0];
+ if (idx <= internal_buffer_end && idx >= internal_buffer_end && mixed_frames_total == p_frames) {
+ // The internal buffer ends somewhere in this range, and we haven't yet recorded the number of good frames we have.
+ mixed_frames_total = i;
+ }
+
float mu2 = mu * mu;
AudioFrame a0 = 3 * y1 - 3 * y2 + y3 - y0;
AudioFrame a1 = 2 * y0 - 5 * y1 + 4 * y2 - y3;
@@ -135,7 +144,14 @@ void AudioStreamPlaybackResampled::mix(AudioFrame *p_buffer, float p_rate_scale,
internal_buffer[2] = internal_buffer[INTERNAL_BUFFER_LEN + 2];
internal_buffer[3] = internal_buffer[INTERNAL_BUFFER_LEN + 3];
if (is_playing()) {
- _mix_internal(internal_buffer + 4, INTERNAL_BUFFER_LEN);
+ int mixed_frames = _mix_internal(internal_buffer + 4, INTERNAL_BUFFER_LEN);
+ if (mixed_frames != INTERNAL_BUFFER_LEN) {
+ // internal_buffer[mixed_frames] is the first frame of silence.
+ internal_buffer_end = mixed_frames;
+ } else {
+ // The internal buffer does not contain the first frame of silence.
+ internal_buffer_end = -1;
+ }
} else {
//fill with silence, not playing
for (int j = 0; j < INTERNAL_BUFFER_LEN; ++j) {
@@ -145,6 +161,7 @@ void AudioStreamPlaybackResampled::mix(AudioFrame *p_buffer, float p_rate_scale,
mix_offset -= (INTERNAL_BUFFER_LEN << FP_BITS);
}
}
+ return mixed_frames_total;
}
////////////////////////////////
@@ -210,7 +227,7 @@ void AudioStreamMicrophone::_bind_methods() {
AudioStreamMicrophone::AudioStreamMicrophone() {
}
-void AudioStreamPlaybackMicrophone::_mix_internal(AudioFrame *p_buffer, int p_frames) {
+int AudioStreamPlaybackMicrophone::_mix_internal(AudioFrame *p_buffer, int p_frames) {
AudioDriver::get_singleton()->lock();
Vector<int32_t> buf = AudioDriver::get_singleton()->get_input_buffer();
@@ -221,6 +238,8 @@ void AudioStreamPlaybackMicrophone::_mix_internal(AudioFrame *p_buffer, int p_fr
unsigned int input_position = AudioDriver::get_singleton()->get_input_position();
#endif
+ int mixed_frames = p_frames;
+
if (playback_delay > input_size) {
for (int i = 0; i < p_frames; i++) {
p_buffer[i] = AudioFrame(0.0f, 0.0f);
@@ -240,6 +259,9 @@ void AudioStreamPlaybackMicrophone::_mix_internal(AudioFrame *p_buffer, int p_fr
p_buffer[i] = AudioFrame(l, r);
} else {
+ if (mixed_frames == p_frames) {
+ mixed_frames = i;
+ }
p_buffer[i] = AudioFrame(0.0f, 0.0f);
}
}
@@ -252,10 +274,12 @@ void AudioStreamPlaybackMicrophone::_mix_internal(AudioFrame *p_buffer, int p_fr
#endif
AudioDriver::get_singleton()->unlock();
+
+ return mixed_frames;
}
-void AudioStreamPlaybackMicrophone::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
- AudioStreamPlaybackResampled::mix(p_buffer, p_rate_scale, p_frames);
+int AudioStreamPlaybackMicrophone::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
+ return AudioStreamPlaybackResampled::mix(p_buffer, p_rate_scale, p_frames);
}
float AudioStreamPlaybackMicrophone::get_stream_sampling_rate() {
@@ -428,13 +452,14 @@ void AudioStreamPlaybackRandomPitch::seek(float p_time) {
}
}
-void AudioStreamPlaybackRandomPitch::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
+int AudioStreamPlaybackRandomPitch::mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) {
if (playing.is_valid()) {
- playing->mix(p_buffer, p_rate_scale * pitch_scale, p_frames);
+ return playing->mix(p_buffer, p_rate_scale * pitch_scale, p_frames);
} else {
for (int i = 0; i < p_frames; i++) {
p_buffer[i] = AudioFrame(0, 0);
}
+ return p_frames;
}
}
diff --git a/servers/audio/audio_stream.h b/servers/audio/audio_stream.h
index 25f0017211..922335508e 100644
--- a/servers/audio/audio_stream.h
+++ b/servers/audio/audio_stream.h
@@ -51,7 +51,7 @@ protected:
GDVIRTUAL0RC(int, _get_loop_count)
GDVIRTUAL0RC(float, _get_playback_position)
GDVIRTUAL1(_seek, float)
- GDVIRTUAL3(_mix, GDNativePtr<AudioFrame>, float, int)
+ GDVIRTUAL3R(int, _mix, GDNativePtr<AudioFrame>, float, int)
public:
virtual void start(float p_from_pos = 0.0);
virtual void stop();
@@ -62,7 +62,7 @@ public:
virtual float get_playback_position() const;
virtual void seek(float p_time);
- virtual void mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames);
+ virtual int mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames);
};
class AudioStreamPlaybackResampled : public AudioStreamPlayback {
@@ -77,15 +77,17 @@ class AudioStreamPlaybackResampled : public AudioStreamPlayback {
};
AudioFrame internal_buffer[INTERNAL_BUFFER_LEN + CUBIC_INTERP_HISTORY];
+ unsigned int internal_buffer_end = -1;
uint64_t mix_offset;
protected:
void _begin_resample();
- virtual void _mix_internal(AudioFrame *p_buffer, int p_frames) = 0;
+ // Returns the number of frames that were mixed.
+ virtual int _mix_internal(AudioFrame *p_buffer, int p_frames) = 0;
virtual float get_stream_sampling_rate() = 0;
public:
- virtual void mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override;
+ virtual int mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override;
AudioStreamPlaybackResampled() { mix_offset = 0; }
};
@@ -140,11 +142,11 @@ class AudioStreamPlaybackMicrophone : public AudioStreamPlaybackResampled {
Ref<AudioStreamMicrophone> microphone;
protected:
- virtual void _mix_internal(AudioFrame *p_buffer, int p_frames) override;
+ virtual int _mix_internal(AudioFrame *p_buffer, int p_frames) override;
virtual float get_stream_sampling_rate() override;
public:
- virtual void mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override;
+ virtual int mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override;
virtual void start(float p_from_pos = 0.0) override;
virtual void stop() override;
@@ -208,7 +210,7 @@ public:
virtual float get_playback_position() const override;
virtual void seek(float p_time) override;
- virtual void mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override;
+ virtual int mix(AudioFrame *p_buffer, float p_rate_scale, int p_frames) override;
~AudioStreamPlaybackRandomPitch();
};
diff --git a/servers/audio/effects/audio_stream_generator.cpp b/servers/audio/effects/audio_stream_generator.cpp
index bced2997ce..edb5c6d2dd 100644
--- a/servers/audio/effects/audio_stream_generator.cpp
+++ b/servers/audio/effects/audio_stream_generator.cpp
@@ -138,7 +138,7 @@ void AudioStreamGeneratorPlayback::clear_buffer() {
mixed = 0;
}
-void AudioStreamGeneratorPlayback::_mix_internal(AudioFrame *p_buffer, int p_frames) {
+int AudioStreamGeneratorPlayback::_mix_internal(AudioFrame *p_buffer, int p_frames) {
int read_amount = buffer.data_left();
if (p_frames < read_amount) {
read_amount = p_frames;
@@ -156,6 +156,7 @@ void AudioStreamGeneratorPlayback::_mix_internal(AudioFrame *p_buffer, int p_fra
}
mixed += p_frames / generator->get_mix_rate();
+ return read_amount < p_frames ? read_amount : p_frames;
}
float AudioStreamGeneratorPlayback::get_stream_sampling_rate() {
diff --git a/servers/audio/effects/audio_stream_generator.h b/servers/audio/effects/audio_stream_generator.h
index 5d46771f4d..6bec744081 100644
--- a/servers/audio/effects/audio_stream_generator.h
+++ b/servers/audio/effects/audio_stream_generator.h
@@ -67,7 +67,7 @@ class AudioStreamGeneratorPlayback : public AudioStreamPlaybackResampled {
AudioStreamGenerator *generator;
protected:
- virtual void _mix_internal(AudioFrame *p_buffer, int p_frames) override;
+ virtual int _mix_internal(AudioFrame *p_buffer, int p_frames) override;
virtual float get_stream_sampling_rate() override;
static void _bind_methods();
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 04:52:21 +0000