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Update Wii U audio backend

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This commit is contained in:
Clownacy 2020-06-24 17:34:25 +01:00
parent f64f924b54
commit dae87c6106
1 changed files with 25 additions and 26 deletions
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51
src/Backends/Audio/WiiU-Software.cpp
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@ -27,12 +27,12 @@ static OSMutex organya_mutex;
static AXVoice *voices[2];
static short *stream_buffers[2];
static float *stream_buffer_float;
static long *stream_buffer_long;
static size_t buffer_length;
static unsigned long output_frequency;
static void FillMixerBuffer(float *stream, size_t frames_total)
static void MixSoundsAndUpdateOrganya(long *stream, size_t frames_total)
{
OSLockMutex(&organya_mutex);
@ -91,39 +91,38 @@ static void FrameCallback(void)
if (current_buffer != last_buffer)
{
// Clear the mixer buffer
for (unsigned int i = 0; i < buffer_length * 2; ++i)
stream_buffer_float[i] = 0.0f;
memset(stream_buffer_long, 0, buffer_length * sizeof(long) * 2);
// Fill mixer buffer
FillMixerBuffer(stream_buffer_float, buffer_length);
MixSoundsAndUpdateOrganya(stream_buffer_long, buffer_length);
// Deinterlate samples, convert them to S16, and write them to the double-buffers
short *left_output_buffer = &stream_buffers[0][buffer_length * last_buffer];
short *right_output_buffer = &stream_buffers[1][buffer_length * last_buffer];
float *mixer_buffer_pointer = stream_buffer_float;
long *mixer_buffer_pointer = stream_buffer_long;
short *left_output_buffer_pointer = left_output_buffer;
short *right_output_buffer_pointer = right_output_buffer;
for (unsigned int i = 0; i < buffer_length; ++i)
{
float left_sample = *mixer_buffer_pointer++;
float right_sample = *mixer_buffer_pointer++;
const long left_sample = *mixer_buffer_pointer++;
const long right_sample = *mixer_buffer_pointer++;
// Clamp samples to sane limits
if (left_sample < -1.0f)
left_sample = -1.0f;
else if (left_sample > 1.0f)
left_sample = 1.0f;
// Clamp samples to sane limits, convert to S16, and store in double-buffers
if (left_sample > 0x7FFF)
*left_output_buffer_pointer++ = 0x7FFF;
else if (left_sample < -0x7FFF)
*left_output_buffer_pointer++ = -0x7FFF;
else
*left_output_buffer_pointer++ = (short)left_sample;
if (right_sample < -1.0f)
right_sample = -1.0f;
else if (right_sample > 1.0f)
right_sample = 1.0f;
// Convert to S16 and store in double-buffers
*left_output_buffer_pointer++ = (short)(left_sample * 32767.0f);
*right_output_buffer_pointer++ = (short)(right_sample * 32767.0f);
if (right_sample > 0x7FFF)
*right_output_buffer_pointer++ = 0x7FFF;
else if (right_sample < -0x7FFF)
*right_output_buffer_pointer++ = -0x7FFF;
else
*right_output_buffer_pointer++ = (short)right_sample;
}
// Make sure the sound hardware can see our data
@ -158,11 +157,11 @@ bool AudioBackend_Init(void)
// Create and initialise two 'voices': each one will stream its own
// audio - one for the left speaker, and one for the right.
// The software-mixer outputs interlaced float samples, so create
// a buffer for it here.
stream_buffer_float = (float*)malloc(buffer_length * sizeof(float) * 2); // `* 2` because it's an interlaced stereo buffer
// The software-mixer outputs interlaced samples into a buffer of `long`s,
// so create a buffer for it here.
stream_buffer_long = (long*)malloc(buffer_length * sizeof(long) * 2); // `* 2` because it's an interlaced stereo buffer
if (stream_buffer_float != NULL)
if (stream_buffer_long != NULL)
{
stream_buffers[0] = (short*)malloc(buffer_length * sizeof(short) * 2); // `* 2` because it's a double-buffer
@ -232,7 +231,7 @@ bool AudioBackend_Init(void)
free(stream_buffers[0]);
}
free(stream_buffer_float);
free(stream_buffer_long);
}
return false;