nick/DS5Dongle-OLED-Edition-steam-machine
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haptics gain before resample

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This commit is contained in:
awalol
2026-05-08 23:57:11 +08:00
parent 1119d2f17a
commit 5d32bb6de9
1 changed files with 25 additions and 21 deletions
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src/audio.cpp
+11 -7
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@@ -35,6 +35,7 @@ alignas(8) static uint32_t audio_core1_stack[8192];
queue_t audio_fifo;
static uint8_t opus_buf[200];
critical_section_t opus_cs;
struct audio_raw_element {
float data[512 * 2];
};
@@ -60,10 +61,11 @@ void audio_loop() {
WDL_ResampleSample *in_buf;
int nframes = resampler.ResamplePrepare(frames, OUTPUT_CHANNELS, &in_buf);
float gain = mute[0] ? 0.0f : powf(10.0f, get_config().speaker_volume / 20.0f);
const float audio_gain = mute[0] ? 0.0f : powf(10.0f, get_config().speaker_volume / 20.0f);
const float haptics_gain = get_config().haptics_gain;
for (int i = 0; i < nframes; i++) {
audio_buf[audio_buf_pos++] = raw[i * INPUT_CHANNELS] / 32768.0f * gain;
audio_buf[audio_buf_pos++] = raw[i * INPUT_CHANNELS + 1] / 32768.0f * gain;
audio_buf[audio_buf_pos++] = raw[i * INPUT_CHANNELS] / 32768.0f * audio_gain;
audio_buf[audio_buf_pos++] = raw[i * INPUT_CHANNELS + 1] / 32768.0f * audio_gain;
if (audio_buf_pos == 512 * 2) {
static audio_raw_element element{};
memcpy(element.data, audio_buf, 512 * 2 * 4);
@@ -76,8 +78,10 @@ void audio_loop() {
audio_buf_pos = 0;
}
in_buf[i * 2] = (WDL_ResampleSample) raw[i * INPUT_CHANNELS + 2] / 32768.0f;
in_buf[i * 2 + 1] = (WDL_ResampleSample) raw[i * INPUT_CHANNELS + 3] / 32768.0f;
in_buf[i * 2] = static_cast<WDL_ResampleSample>(clamp(raw[i * INPUT_CHANNELS + 2] / 32768.0f * haptics_gain,
-1.0f, 1.0f));
in_buf[i * 2 + 1] = static_cast<WDL_ResampleSample>(clamp(raw[i * INPUT_CHANNELS + 3] / 32768.0f * haptics_gain,
-1.0f, 1.0f));
}
// 3. 48kHz -> 3kHz 重采样
@@ -89,8 +93,8 @@ void audio_loop() {
// 4. 转换为int8并缓冲，满64字节即组包发送
for (int i = 0; i < out_frames; i++) {
int val_l = (int) (out_buf[i * 2] * 127.0f * max(get_config().haptics_gain,1.0f));
int val_r = (int) (out_buf[i * 2 + 1] * 127.0f * max(get_config().haptics_gain,1.0f));
int val_l = static_cast<int>(out_buf[i * 2] * 127.0f);
int val_r = static_cast<int>(out_buf[i * 2 + 1] * 127.0f);
haptic_buf[haptic_buf_pos++] = (int8_t) clamp(val_l, -128, 127); // 似乎clamp有点多余？还是以防万一吧
haptic_buf[haptic_buf_pos++] = (int8_t) clamp(val_r, -128, 127);