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Fix wasapi going silent when number of channels are not supported

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This commit is contained in:
Marcelo Fernandez 2017-11-30 19:51:27 -03:00
parent 9678231b10
commit a3f0ffdf24
2 changed files with 49 additions and 37 deletions
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84
drivers/wasapi/audio_driver_wasapi.cpp
View file

@ -74,21 +74,22 @@ Error AudioDriverWASAPI::init_device(bool reinit) {
ERR_FAIL_COND_V(hr != S_OK, ERR_CANT_OPEN);
// Since we're using WASAPI Shared Mode we can't control any of these, we just tag along
channels = pwfex->nChannels;
wasapi_channels = pwfex->nChannels;
mix_rate = pwfex->nSamplesPerSec;
format_tag = pwfex->wFormatTag;
bits_per_sample = pwfex->wBitsPerSample;
switch (channels) {
switch (wasapi_channels) {
case 2: // Stereo
case 4: // Surround 3.1
case 6: // Surround 5.1
case 8: // Surround 7.1
channels = wasapi_channels;
break;
default:
ERR_PRINTS("WASAPI: Unsupported number of channels: " + itos(channels));
ERR_FAIL_V(ERR_CANT_OPEN);
WARN_PRINTS("WASAPI: Unsupported number of channels: " + itos(wasapi_channels));
channels = 2;
break;
}
@ -206,6 +207,35 @@ AudioDriver::SpeakerMode AudioDriverWASAPI::get_speaker_mode() const {
return get_speaker_mode_by_total_channels(channels);
}
void AudioDriverWASAPI::write_sample(AudioDriverWASAPI *ad, BYTE *buffer, int i, int32_t sample) {
if (ad->format_tag == WAVE_FORMAT_PCM) {
switch (ad->bits_per_sample) {
case 8:
((int8_t *)buffer)[i] = sample >> 24;
break;
case 16:
((int16_t *)buffer)[i] = sample >> 16;
break;
case 24:
((int8_t *)buffer)[i * 3 + 2] = sample >> 24;
((int8_t *)buffer)[i * 3 + 1] = sample >> 16;
((int8_t *)buffer)[i * 3 + 0] = sample >> 8;
break;
case 32:
((int32_t *)buffer)[i] = sample;
break;
}
} else if (ad->format_tag == WAVE_FORMAT_IEEE_FLOAT) {
((float *)buffer)[i] = (sample >> 16) / 32768.f;
} else {
ERR_PRINT("WASAPI: Unknown format tag");
ad->exit_thread = true;
}
}
void AudioDriverWASAPI::thread_func(void *p_udata) {
AudioDriverWASAPI *ad = (AudioDriverWASAPI *)p_udata;
@ -240,42 +270,21 @@ void AudioDriverWASAPI::thread_func(void *p_udata) {
if (hr == S_OK) {
// We're using WASAPI Shared Mode so we must convert the buffer
if (ad->format_tag == WAVE_FORMAT_PCM) {
switch (ad->bits_per_sample) {
case 8:
for (unsigned int i = 0; i < write_frames * ad->channels; i++) {
((int8_t *)buffer)[i] = ad->samples_in[buffer_idx++] >> 24;
}
break;
case 16:
for (unsigned int i = 0; i < write_frames * ad->channels; i++) {
((int16_t *)buffer)[i] = ad->samples_in[buffer_idx++] >> 16;
}
break;
case 24:
for (unsigned int i = 0; i < write_frames * ad->channels; i++) {
int32_t sample = ad->samples_in[buffer_idx++];
((int8_t *)buffer)[i * 3 + 2] = sample >> 24;
((int8_t *)buffer)[i * 3 + 1] = sample >> 16;
((int8_t *)buffer)[i * 3 + 0] = sample >> 8;
}
break;
case 32:
for (unsigned int i = 0; i < write_frames * ad->channels; i++) {
((int32_t *)buffer)[i] = ad->samples_in[buffer_idx++];
}
break;
}
} else if (ad->format_tag == WAVE_FORMAT_IEEE_FLOAT) {
if (ad->channels == ad->wasapi_channels) {
for (unsigned int i = 0; i < write_frames * ad->channels; i++) {
((float *)buffer)[i] = (ad->samples_in[buffer_idx++] >> 16) / 32768.f;
ad->write_sample(ad, buffer, i, ad->samples_in[buffer_idx++]);
}
} else {
ERR_PRINT("WASAPI: Unknown format tag");
ad->exit_thread = true;
for (unsigned int i = 0; i < write_frames; i++) {
for (unsigned int j = 0; j < MIN(ad->channels, ad->wasapi_channels); j++) {
ad->write_sample(ad, buffer, i * ad->wasapi_channels + j, ad->samples_in[buffer_idx++]);
}
if (ad->wasapi_channels > ad->channels) {
for (unsigned int j = ad->channels; j < ad->wasapi_channels; j++) {
ad->write_sample(ad, buffer, i * ad->wasapi_channels + j, 0);
}
}
}
}
hr = ad->render_client->ReleaseBuffer(write_frames, 0);
@ -380,6 +389,7 @@ AudioDriverWASAPI::AudioDriverWASAPI() {
buffer_size = 0;
channels = 0;
wasapi_channels = 0;
mix_rate = 0;
buffer_frames = 0;

2
drivers/wasapi/audio_driver_wasapi.h
View file

@ -55,6 +55,7 @@ class AudioDriverWASAPI : public AudioDriver {
unsigned int buffer_size;
unsigned int channels;
unsigned int wasapi_channels;
int mix_rate;
int buffer_frames;
@ -62,6 +63,7 @@ class AudioDriverWASAPI : public AudioDriver {
mutable bool exit_thread;
bool active;
_FORCE_INLINE_ void write_sample(AudioDriverWASAPI *ad, BYTE *buffer, int i, int32_t sample);
static void thread_func(void *p_udata);
Error init_device(bool reinit = false);