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windows: Fix audio when host is not using 48 KHz sample rate (#640)

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Cameron Gutman 2022-12-28 07:53:58 -06:00 committed by GitHub
parent 215c86455f
commit c7fe8f65bd
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1 changed files with 57 additions and 349 deletions
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406
src/platform/windows/audio.cpp
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@ -81,262 +81,10 @@ public:
PROPVARIANT prop;
};
class audio_pipe_t {
public:
static constexpr auto stereo = 2;
static constexpr auto channels51 = 6;
static constexpr auto channels71 = 8;
using samples_t = std::vector<std::int16_t>;
using buf_t = util::buffer_t<std::int16_t>;
virtual void to_stereo(samples_t &out, const buf_t &in) = 0;
virtual void to_51(samples_t &out, const buf_t &in) = 0;
virtual void to_71(samples_t &out, const buf_t &in) = 0;
};
class mono_t : public audio_pipe_t {
public:
void to_stereo(samples_t &out, const buf_t &in) override {
auto sample_in_pos = std::begin(in);
auto sample_end = std::begin(out) + out.size();
for(auto sample_out_p = std::begin(out); sample_out_p != sample_end;) {
*sample_out_p++ = *sample_in_pos * 7 / 10;
*sample_out_p++ = *sample_in_pos++ * 7 / 10;
}
}
void to_51(samples_t &out, const buf_t &in) override {
using namespace speaker;
auto sample_in_pos = std::begin(in);
auto sample_end = std::begin(out) + out.size();
for(auto sample_out_p = std::begin(out); sample_out_p != sample_end; sample_out_p += channels51) {
int left = *sample_in_pos++;
auto fl = (left * 7 / 10);
sample_out_p[FRONT_LEFT] = fl;
sample_out_p[FRONT_RIGHT] = fl;
sample_out_p[FRONT_CENTER] = fl * 6;
sample_out_p[LOW_FREQUENCY] = fl / 10;
sample_out_p[BACK_LEFT] = left * 4 / 10;
sample_out_p[BACK_RIGHT] = left * 4 / 10;
}
}
void to_71(samples_t &out, const buf_t &in) override {
using namespace speaker;
auto sample_in_pos = std::begin(in);
auto sample_end = std::begin(out) + out.size();
for(auto sample_out_p = std::begin(out); sample_out_p != sample_end; sample_out_p += channels71) {
int left = *sample_in_pos++;
auto fl = (left * 7 / 10);
sample_out_p[FRONT_LEFT] = fl;
sample_out_p[FRONT_RIGHT] = fl;
sample_out_p[FRONT_CENTER] = fl * 6;
sample_out_p[LOW_FREQUENCY] = fl / 10;
sample_out_p[BACK_LEFT] = left * 4 / 10;
sample_out_p[BACK_RIGHT] = left * 4 / 10;
sample_out_p[SIDE_LEFT] = left * 5 / 10;
sample_out_p[SIDE_RIGHT] = left * 5 / 10;
}
}
};
class stereo_t : public audio_pipe_t {
public:
void to_stereo(samples_t &out, const buf_t &in) override {
std::copy_n(std::begin(in), out.size(), std::begin(out));
}
void to_51(samples_t &out, const buf_t &in) override {
using namespace speaker;
auto sample_in_pos = std::begin(in);
auto sample_end = std::begin(out) + out.size();
for(auto sample_out_p = std::begin(out); sample_out_p != sample_end; sample_out_p += channels51) {
int left = sample_in_pos[speaker::FRONT_LEFT];
int right = sample_in_pos[speaker::FRONT_RIGHT];
sample_in_pos += 2;
auto fl = (left * 7 / 10);
auto fr = (right * 7 / 10);
auto mix = (fl + fr) / 2;
sample_out_p[FRONT_LEFT] = fl;
sample_out_p[FRONT_RIGHT] = fr;
sample_out_p[FRONT_CENTER] = mix;
sample_out_p[LOW_FREQUENCY] = mix / 2;
sample_out_p[BACK_LEFT] = left * 4 / 10;
sample_out_p[BACK_RIGHT] = right * 4 / 10;
}
}
void to_71(samples_t &out, const buf_t &in) override {
using namespace speaker;
auto sample_in_pos = std::begin(in);
auto sample_end = std::begin(out) + out.size();
for(auto sample_out_p = std::begin(out); sample_out_p != sample_end; sample_out_p += channels71) {
int left = sample_in_pos[speaker::FRONT_LEFT];
int right = sample_in_pos[speaker::FRONT_RIGHT];
sample_in_pos += 2;
auto fl = (left * 7 / 10);
auto fr = (right * 7 / 10);
auto mix = (fl + fr) / 2;
sample_out_p[FRONT_LEFT] = fl;
sample_out_p[FRONT_RIGHT] = fr;
sample_out_p[FRONT_CENTER] = mix;
sample_out_p[LOW_FREQUENCY] = mix / 2;
sample_out_p[BACK_LEFT] = left * 4 / 10;
sample_out_p[BACK_RIGHT] = right * 4 / 10;
sample_out_p[SIDE_LEFT] = left * 5 / 10;
sample_out_p[SIDE_RIGHT] = right * 5 / 10;
}
}
};
class surr51_t : public audio_pipe_t {
public:
void to_stereo(samples_t &out, const buf_t &in) {
using namespace speaker;
auto sample_in_pos = std::begin(in);
auto sample_end = std::begin(out) + out.size();
for(auto sample_out_p = std::begin(out); sample_out_p != sample_end; sample_out_p += stereo) {
int left {}, right {};
left += sample_in_pos[FRONT_LEFT];
left += sample_in_pos[FRONT_CENTER] * 9 / 10;
left += sample_in_pos[LOW_FREQUENCY] * 3 / 10;
left += sample_in_pos[BACK_LEFT] * 7 / 10;
left += sample_in_pos[BACK_RIGHT] * 3 / 10;
right += sample_in_pos[FRONT_RIGHT];
right += sample_in_pos[FRONT_CENTER] * 9 / 10;
right += sample_in_pos[LOW_FREQUENCY] * 3 / 10;
right += sample_in_pos[BACK_LEFT] * 3 / 10;
right += sample_in_pos[BACK_RIGHT] * 7 / 10;
sample_out_p[0] = left;
sample_out_p[1] = right;
sample_in_pos += channels51;
}
}
void to_51(samples_t &out, const buf_t &in) override {
std::copy_n(std::begin(in), out.size(), std::begin(out));
}
void to_71(samples_t &out, const buf_t &in) override {
using namespace speaker;
auto sample_in_pos = std::begin(in);
auto sample_end = std::begin(out) + out.size();
for(auto sample_out_p = std::begin(out); sample_out_p != sample_end; sample_out_p += channels71) {
int fl = sample_in_pos[FRONT_LEFT];
int fr = sample_in_pos[FRONT_RIGHT];
int bl = sample_in_pos[BACK_LEFT];
int br = sample_in_pos[BACK_RIGHT];
auto mix_l = (fl + bl) / 2;
auto mix_r = (bl + br) / 2;
sample_out_p[FRONT_LEFT] = fl;
sample_out_p[FRONT_RIGHT] = fr;
sample_out_p[FRONT_CENTER] = sample_in_pos[FRONT_CENTER];
sample_out_p[LOW_FREQUENCY] = sample_in_pos[LOW_FREQUENCY];
sample_out_p[BACK_LEFT] = bl;
sample_out_p[BACK_RIGHT] = br;
sample_out_p[SIDE_LEFT] = mix_l;
sample_out_p[SIDE_RIGHT] = mix_r;
sample_in_pos += channels51;
}
}
};
class surr71_t : public audio_pipe_t {
public:
void to_stereo(samples_t &out, const buf_t &in) {
using namespace speaker;
auto sample_in_pos = std::begin(in);
auto sample_end = std::begin(out) + out.size();
for(auto sample_out_p = std::begin(out); sample_out_p != sample_end; sample_out_p += stereo) {
int left {}, right {};
left += sample_in_pos[FRONT_LEFT];
left += sample_in_pos[FRONT_CENTER] * 9 / 10;
left += sample_in_pos[LOW_FREQUENCY] * 3 / 10;
left += sample_in_pos[BACK_LEFT] * 7 / 10;
left += sample_in_pos[BACK_RIGHT] * 3 / 10;
left += sample_in_pos[SIDE_LEFT];
right += sample_in_pos[FRONT_RIGHT];
right += sample_in_pos[FRONT_CENTER] * 9 / 10;
right += sample_in_pos[LOW_FREQUENCY] * 3 / 10;
right += sample_in_pos[BACK_LEFT] * 3 / 10;
right += sample_in_pos[BACK_RIGHT] * 7 / 10;
right += sample_in_pos[SIDE_RIGHT];
sample_out_p[0] = left;
sample_out_p[1] = right;
sample_in_pos += channels71;
}
}
void to_51(samples_t &out, const buf_t &in) override {
using namespace speaker;
auto sample_in_pos = std::begin(in);
auto sample_end = std::begin(out) + out.size();
for(auto sample_out_p = std::begin(out); sample_out_p != sample_end; sample_out_p += channels51) {
auto sl = (int)sample_out_p[SIDE_LEFT] * 3 / 10;
auto sr = (int)sample_out_p[SIDE_RIGHT] * 3 / 10;
sample_out_p[FRONT_LEFT] = sample_in_pos[FRONT_LEFT] + sl;
sample_out_p[FRONT_RIGHT] = sample_in_pos[FRONT_RIGHT] + sr;
sample_out_p[FRONT_CENTER] = sample_in_pos[FRONT_CENTER];
sample_out_p[LOW_FREQUENCY] = sample_in_pos[LOW_FREQUENCY];
sample_out_p[BACK_LEFT] = sample_in_pos[BACK_LEFT] + sl;
sample_out_p[BACK_RIGHT] = sample_in_pos[BACK_RIGHT] + sr;
sample_in_pos += channels71;
}
}
void to_71(samples_t &out, const buf_t &in) override {
std::copy_n(std::begin(in), out.size(), std::begin(out));
}
};
static std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>, wchar_t> converter;
struct format_t {
enum type_e : int {
none,
mono,
stereo,
surr51,
surr71,
@ -346,12 +94,6 @@ struct format_t {
int channels;
int channel_mask;
} formats[] {
{
format_t::mono,
"Mono"sv,
1,
SPEAKER_FRONT_CENTER,
},
{
format_t::stereo,
"Stereo"sv,
@ -396,43 +138,53 @@ static format_t surround_51_side_speakers {
SPEAKER_SIDE_RIGHT,
};
void set_wave_format(audio::wave_format_t &wave_format, const format_t &format) {
wave_format->nChannels = format.channels;
wave_format->nBlockAlign = wave_format->nChannels * wave_format->wBitsPerSample / 8;
wave_format->nAvgBytesPerSec = wave_format->nSamplesPerSec * wave_format->nBlockAlign;
WAVEFORMATEXTENSIBLE create_wave_format(const format_t &format) {
WAVEFORMATEXTENSIBLE wave_format;
if(wave_format->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
((PWAVEFORMATEXTENSIBLE)wave_format.get())->dwChannelMask = format.channel_mask;
}
wave_format.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
wave_format.Format.nChannels = format.channels;
wave_format.Format.nSamplesPerSec = SAMPLE_RATE;
wave_format.Format.wBitsPerSample = 16;
wave_format.Format.nBlockAlign = wave_format.Format.nChannels * wave_format.Format.wBitsPerSample / 8;
wave_format.Format.nAvgBytesPerSec = wave_format.Format.nSamplesPerSec * wave_format.Format.nBlockAlign;
wave_format.Format.cbSize = sizeof(wave_format);
wave_format.Samples.wValidBitsPerSample = 16;
wave_format.dwChannelMask = format.channel_mask;
wave_format.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
return wave_format;
}
int init_wave_format(audio::wave_format_t &wave_format, DWORD sample_rate) {
int set_wave_format(audio::wave_format_t &wave_format, const format_t &format) {
wave_format->nSamplesPerSec = SAMPLE_RATE;
wave_format->wBitsPerSample = 16;
wave_format->nSamplesPerSec = sample_rate;
switch(wave_format->wFormatTag) {
case WAVE_FORMAT_PCM:
break;
case WAVE_FORMAT_IEEE_FLOAT:
break;
case WAVE_FORMAT_EXTENSIBLE: {
auto wave_ex = (PWAVEFORMATEXTENSIBLE)wave_format.get();
if(IsEqualGUID(KSDATAFORMAT_SUBTYPE_IEEE_FLOAT, wave_ex->SubFormat)) {
wave_ex->Samples.wValidBitsPerSample = 16;
wave_ex->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
break;
}
BOOST_LOG(error) << "Unsupported Sub Format for WAVE_FORMAT_EXTENSIBLE: [0x"sv << util::hex(wave_ex->SubFormat).to_string_view() << ']';
auto wave_ex = (PWAVEFORMATEXTENSIBLE)wave_format.get();
wave_ex->Samples.wValidBitsPerSample = 16;
wave_ex->dwChannelMask = format.channel_mask;
wave_ex->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
break;
}
default:
BOOST_LOG(error) << "Unsupported Wave Format: [0x"sv << util::hex(wave_format->wFormatTag).to_string_view() << ']';
return -1;
};
wave_format->nChannels = format.channels;
wave_format->nBlockAlign = wave_format->nChannels * wave_format->wBitsPerSample / 8;
wave_format->nAvgBytesPerSec = wave_format->nSamplesPerSec * wave_format->nBlockAlign;
return 0;
}
audio_client_t make_audio_client(device_t &device, const format_t &format, int sample_rate) {
audio_client_t make_audio_client(device_t &device, const format_t &format) {
audio_client_t audio_client;
auto status = device->Activate(
IID_IAudioClient,
@ -446,24 +198,14 @@ audio_client_t make_audio_client(device_t &device, const format_t &format, int s
return nullptr;
}
wave_format_t wave_format;
status = audio_client->GetMixFormat(&wave_format);
if(FAILED(status)) {
BOOST_LOG(error) << "Couldn't acquire Wave Format [0x"sv << util::hex(status).to_string_view() << ']';
return nullptr;
}
if(init_wave_format(wave_format, sample_rate)) {
return nullptr;
}
set_wave_format(wave_format, format);
WAVEFORMATEXTENSIBLE wave_format = create_wave_format(format);
status = audio_client->Initialize(
AUDCLNT_SHAREMODE_SHARED,
AUDCLNT_STREAMFLAGS_LOOPBACK | AUDCLNT_STREAMFLAGS_EVENTCALLBACK,
AUDCLNT_STREAMFLAGS_LOOPBACK | AUDCLNT_STREAMFLAGS_EVENTCALLBACK |
AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM | AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY, // Enable automatic resampling to 48 KHz
0, 0,
wave_format.get(),
(LPWAVEFORMATEX)&wave_format,
nullptr);
if(status) {
@ -478,19 +220,21 @@ const wchar_t *no_null(const wchar_t *str) {
return str ? str : L"Unknown";
}
format_t::type_e validate_device(device_t &device, int sample_rate) {
bool validate_device(device_t &device) {
bool valid = false;
// Check for any valid format
for(const auto &format : formats) {
// Ensure WaveFromat is compatible
auto audio_client = make_audio_client(device, format, sample_rate);
auto audio_client = make_audio_client(device, format);
BOOST_LOG(debug) << format.name << ": "sv << (!audio_client ? "unsupported"sv : "supported"sv);
if(audio_client) {
return format.type;
valid = true;
}
}
return format_t::none;
return valid;
}
device_t default_device(device_enum_t &device_enum) {
@ -514,32 +258,20 @@ device_t default_device(device_enum_t &device_enum) {
class mic_wasapi_t : public mic_t {
public:
capture_e sample(std::vector<std::int16_t> &sample_out) override {
auto sample_size = sample_out.size() / channels_out * channels_in;
while(sample_buf_pos - std::begin(sample_buf) < sample_size) {
//FIXME: Use IAudioClient3 instead of IAudioClient, that would allows for adjusting the latency of the audio samples
auto capture_result = _fill_buffer();
auto sample_size = sample_out.size();
// Refill the sample buffer if needed
while(sample_buf_pos - std::begin(sample_buf) < sample_size) {
auto capture_result = _fill_buffer();
if(capture_result != capture_e::ok) {
return capture_result;
}
}
switch(channels_out) {
case 2:
pipe->to_stereo(sample_out, sample_buf);
break;
case 6:
pipe->to_51(sample_out, sample_buf);
break;
case 8:
pipe->to_71(sample_out, sample_buf);
break;
default:
BOOST_LOG(error) << "converting to ["sv << channels_out << "] channels is not supported"sv;
return capture_e::error;
}
// Fill the output buffer with samples
std::copy_n(std::begin(sample_buf), sample_size, std::begin(sample_out));
// The excess samples should be in front of the queue
// Move any excess samples to the front of the buffer
std::move(&sample_buf[sample_size], sample_buf_pos, std::begin(sample_buf));
sample_buf_pos -= sample_size;
@ -576,31 +308,17 @@ public:
}
for(auto &format : formats) {
if(format.channels != channels_out) {
BOOST_LOG(debug) << "Skipping audio format ["sv << format.name << "] with channel count ["sv << format.channels << " != "sv << channels_out << ']';
continue;
}
BOOST_LOG(debug) << "Trying audio format ["sv << format.name << ']';
audio_client = make_audio_client(device, format, sample_rate);
audio_client = make_audio_client(device, format);
if(audio_client) {
BOOST_LOG(debug) << "Found audio format ["sv << format.name << ']';
channels_in = format.channels;
this->channels_out = channels_out;
switch(channels_in) {
case 1:
pipe = std::make_unique<mono_t>();
break;
case 2:
pipe = std::make_unique<stereo_t>();
break;
case 6:
pipe = std::make_unique<surr51_t>();
break;
case 8:
pipe = std::make_unique<surr71_t>();
break;
default:
BOOST_LOG(error) << "converting from ["sv << channels_in << "] channels is not supported"sv;
return -1;
}
channels = channels_out;
break;
}
}
@ -623,7 +341,7 @@ public:
}
// *2 --> needs to fit double
sample_buf = util::buffer_t<std::int16_t> { std::max(frames, frame_size) * 2 * channels_in };
sample_buf = util::buffer_t<std::int16_t> { std::max(frames, frame_size) * 2 * channels_out };
sample_buf_pos = std::begin(sample_buf);
status = audio_client->GetService(IID_IAudioCaptureClient, (void **)&audio_capture);
@ -705,7 +423,7 @@ private:
}
sample_aligned.uninitialized = std::end(sample_buf) - sample_buf_pos;
auto n = std::min(sample_aligned.uninitialized, block_aligned.audio_sample_size * channels_in);
auto n = std::min(sample_aligned.uninitialized, block_aligned.audio_sample_size * channels);
if(buffer_flags & AUDCLNT_BUFFERFLAGS_SILENT) {
std::fill_n(sample_buf_pos, n, 0);
@ -742,13 +460,7 @@ public:
util::buffer_t<std::int16_t> sample_buf;
std::int16_t *sample_buf_pos;
// out --> our audio output
int channels_out;
// in --> our wasapi input
int channels_in;
std::unique_ptr<audio_pipe_t> pipe;
int channels;
};
class audio_control_t : public ::platf::audio_control_t {
@ -798,8 +510,7 @@ public:
audio::device_t device;
collection->Item(x, &device);
auto type = validate_device(device, SAMPLE_RATE);
if(type == format_t::none) {
if(!validate_device(device)) {
continue;
}
@ -897,9 +608,6 @@ public:
return std::nullopt;
}
if(init_wave_format(wave_format, SAMPLE_RATE)) {
return std::nullopt;
}
set_wave_format(wave_format, formats[(int)type - 1]);
WAVEFORMATEXTENSIBLE p {};