mirrors/dolphin
0
0
Fork 0
mirror of https://github.com/dolphin-emu/dolphin.git synced 2025-07-30 04:38:49 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

Do not directly store input sample rate, rather just store a divisor for that sample rate, with it using a fixed dividend of 54000000 * 2.

Browse source 
This should reduce (but not completely eliminate) gradual audio desyncs in dumps. This also allows for accurate sample rates for the GameCube.
Completely eliminating gradual audio desyncs will require resampling to an integer sample rate, as nothing seems to support a non-integer sample rate.
This commit is contained in:
CasualPokePlayer 2022-07-03 15:07:06 -07:00
commit 4234b25682
11 changed files with 121 additions and 93 deletions
Download patch file Download diff file Expand all files Collapse all files

17
Source/Core/AudioCommon/WaveFile.cpp
View file

@ -2,6 +2,7 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include "AudioCommon/WaveFile.h"
#include "AudioCommon/Mixer.h"
#include <string>
@ -26,7 +27,7 @@ WaveFileWriter::~WaveFileWriter()
Stop();
}
bool WaveFileWriter::Start(const std::string& filename, unsigned int HLESampleRate)
bool WaveFileWriter::Start(const std::string& filename, u32 sample_rate_divisor)
{
// Ask to delete file
if (File::Exists(filename))
@ -65,7 +66,7 @@ bool WaveFileWriter::Start(const std::string& filename, unsigned int HLESampleRa
if (basename.empty())
SplitPath(filename, nullptr, &basename, nullptr);
current_sample_rate = HLESampleRate;
current_sample_rate_divisor = sample_rate_divisor;
// -----------------
// Write file header
@ -78,7 +79,7 @@ bool WaveFileWriter::Start(const std::string& filename, unsigned int HLESampleRa
Write(16); // size of fmt block
Write(0x00020001); // two channels, uncompressed
const u32 sample_rate = HLESampleRate;
const u32 sample_rate = Mixer::FIXED_SAMPLE_RATE_DIVIDEND / sample_rate_divisor;
Write(sample_rate);
Write(sample_rate * 2 * 2); // two channels, 16bit
@ -114,8 +115,8 @@ void WaveFileWriter::Write4(const char* ptr)
file.WriteBytes(ptr, 4);
}
void WaveFileWriter::AddStereoSamplesBE(const short* sample_data, u32 count, int sample_rate,
int l_volume, int r_volume)
void WaveFileWriter::AddStereoSamplesBE(const short* sample_data, u32 count,
u32 sample_rate_divisor, int l_volume, int r_volume)
{
if (!file)
ERROR_LOG_FMT(AUDIO, "WaveFileWriter - file not open.");
@ -148,14 +149,14 @@ void WaveFileWriter::AddStereoSamplesBE(const short* sample_data, u32 count, int
conv_buffer[2 * i + 1] = conv_buffer[2 * i + 1] * r_volume / 256;
}
if (sample_rate != current_sample_rate)
if (sample_rate_divisor != current_sample_rate_divisor)
{
Stop();
file_index++;
std::ostringstream filename;
filename << File::GetUserPath(D_DUMPAUDIO_IDX) << basename << file_index << ".wav";
Start(filename.str(), sample_rate);
current_sample_rate = sample_rate;
Start(filename.str(), sample_rate_divisor);
current_sample_rate_divisor = sample_rate_divisor;
}
file.WriteBytes(conv_buffer.data(), count * 4);