ref: e8a29beb7a6ba80b8a6596010bee8cdfd8a24421
parent: b8597d3238c967105640024555278aec78a5eae1
author: Olav Sørensen <olav.sorensen@live.no>
date: Fri Jun 19 15:35:35 EDT 2020
Reset sample counter when pressing Play Song (reduces tiny delay) Also some code cleanup (more sensible variable names).
--- a/src/ft2_audio.c
+++ b/src/ft2_audio.c
@@ -20,7 +20,7 @@
static int8_t pmpCountDiv, pmpChannels = 2;
static uint16_t smpBuffSize;
-static int32_t masterVol, oldAudioFreq, pmpLeft, randSeed = INITIAL_DITHER_SEED;
+static int32_t masterVol, oldAudioFreq, randSeed = INITIAL_DITHER_SEED;
static int32_t prngStateL, prngStateR;
static uint32_t tickTimeLen, tickTimeLenFrac;
static float fAudioAmpMul;
@@ -161,7 +161,7 @@
if (bpm > MAX_BPM)
return;
- audio.speedVal = audio.speedValTab[bpm];
+ audio.samplesPerTick = audio.speedValTab[bpm];
// get tick time length for audio/video sync timestamp
const uint64_t tickTimeLen64 = audio.tickTimeLengthTab[bpm];
@@ -261,7 +261,7 @@
}
else
{- v->SVolIPLen = audio.speedVal;
+ v->SVolIPLen = audio.samplesPerTick;
v->SLVolIP = ((int64_t)destVolL * audio.rampSpeedValMul) >> 32;
v->SRVolIP = ((int64_t)destVolR * audio.rampSpeedValMul) >> 32;
}
@@ -584,8 +584,8 @@
voice_t *v, *r;
assert(audio.speedVal <= MAX_WAV_RENDER_SAMPLES_PER_TICK);
- memset(audio.mixBufferL, 0, audio.speedVal * sizeof (int32_t));
- memset(audio.mixBufferR, 0, audio.speedVal * sizeof (int32_t));
+ memset(audio.mixBufferL, 0, audio.samplesPerTick * sizeof (int32_t));
+ memset(audio.mixBufferR, 0, audio.samplesPerTick * sizeof (int32_t));
// mix channels
v = voice; // normal voices
@@ -594,8 +594,8 @@
for (int32_t i = 0; i < song.antChn; i++, v++, r++)
{// call the mixing routine currently set for the voice
- if (v->mixRoutine != NULL) v->mixRoutine(v, audio.speedVal); // mix normal voice
- if (r->mixRoutine != NULL) r->mixRoutine(r, audio.speedVal); // mix volume ramp voice
+ if (v->mixRoutine != NULL) v->mixRoutine(v, audio.samplesPerTick); // mix normal voice
+ if (r->mixRoutine != NULL) r->mixRoutine(r, audio.samplesPerTick); // mix volume ramp voice
}
// normalize mix buffer and send to audio stream
@@ -602,16 +602,16 @@
if (bitDepth == 16)
{if (config.specialFlags2 & DITHERED_AUDIO)
- sendSamples16BitDitherStereo(stream, audio.speedVal, 2);
+ sendSamples16BitDitherStereo(stream, audio.samplesPerTick, 2);
else
- sendSamples16BitStereo(stream, audio.speedVal, 2);
+ sendSamples16BitStereo(stream, audio.samplesPerTick, 2);
}
else
{- sendSamples24BitStereo(stream, audio.speedVal, 2);
+ sendSamples24BitStereo(stream, audio.samplesPerTick, 2);
}
- return audio.speedVal;
+ return audio.samplesPerTick;
}
int32_t pattQueueReadSize(void)
@@ -930,18 +930,16 @@
static void SDLCALL audioCallback(void *userdata, Uint8 *stream, int len)
{- int32_t a, b;
-
assert(len < 65536); // limitation in mixer
assert(pmpCountDiv > 0);
- a = len / pmpCountDiv;
- if (a <= 0)
+ int32_t samplesLeft = len / pmpCountDiv;
+ if (samplesLeft <= 0)
return;
- while (a > 0)
+ while (samplesLeft > 0)
{- if (pmpLeft == 0)
+ if (audio.tickSampleCounter == 0)
{// new replayer tick
@@ -954,20 +952,20 @@
mix_UpdateChannelVolPanFrq();
fillVisualsSyncBuffer();
- pmpLeft = audio.speedVal;
+ audio.tickSampleCounter = audio.samplesPerTick;
replayerBusy = false;
}
- b = a;
- if (b > pmpLeft)
- b = pmpLeft;
+ int32_t samplesToMix = samplesLeft;
+ if (samplesToMix > audio.tickSampleCounter)
+ samplesToMix = audio.tickSampleCounter;
- mixAudio(stream, b, pmpChannels);
- stream += b * pmpCountDiv;
+ mixAudio(stream, samplesToMix, pmpChannels);
+ stream += samplesToMix * pmpCountDiv;
- a -= b;
- pmpLeft -= b;
+ samplesLeft -= samplesToMix;
+ audio.tickSampleCounter -= samplesToMix;
}
(void)userdata;
@@ -1225,7 +1223,7 @@
stopAllScopes();
- pmpLeft = 0; // reset sample counter
+ audio.tickSampleCounter = 0; // zero tick sample counter so that it will instantly initiate a tick
calcReplayRate(audio.freq);
--- a/src/ft2_audio.h
+++ b/src/ft2_audio.h
@@ -51,8 +51,9 @@
int32_t inputDeviceNum, outputDeviceNum, lastWorkingAudioFreq, lastWorkingAudioBits;
int32_t quickVolSizeVal, *mixBufferL, *mixBufferR, *mixBufferLUnaligned, *mixBufferRUnaligned;
int32_t rampQuickVolMul, rampSpeedValMul, speedValTab[MAX_BPM+1], rampSpeedValMulTab[MAX_BPM+1];
+ int32_t tickSampleCounter;
uint32_t freq;
- uint32_t audLatencyPerfValInt, audLatencyPerfValFrac, speedVal, musicTimeSpeedVal;
+ uint32_t audLatencyPerfValInt, audLatencyPerfValFrac, samplesPerTick, musicTimeSpeedVal;
uint64_t tickTime64, tickTime64Frac, tickTimeLengthTab[MAX_BPM+1];
double dAudioLatencyMs;
SDL_AudioDeviceID dev;
--- a/src/ft2_replayer.c
+++ b/src/ft2_replayer.c
@@ -2780,6 +2780,8 @@
if (song.tempo == 0)
song.tempo = song.initialTempo;
+ audio.tickSampleCounter = 0; // zero tick sample counter so that it will instantly initiate a tick
+
unlockMixerCallback();
ui.updatePosSections = true;
--- a/vs2019_project/ft2-clone/ft2-clone.vcxproj.filters
+++ b/vs2019_project/ft2-clone/ft2-clone.vcxproj.filters
@@ -1,42 +1,49 @@
<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
<ItemGroup>
+ <ClCompile Include="..\..\src\ft2_about.c" />
<ClCompile Include="..\..\src\ft2_audio.c" />
+ <ClCompile Include="..\..\src\ft2_audioselector.c" />
+ <ClCompile Include="..\..\src\ft2_bmp.c" />
+ <ClCompile Include="..\..\src\ft2_checkboxes.c" />
<ClCompile Include="..\..\src\ft2_config.c" />
+ <ClCompile Include="..\..\src\ft2_diskop.c" />
<ClCompile Include="..\..\src\ft2_edit.c" />
+ <ClCompile Include="..\..\src\ft2_events.c" />
<ClCompile Include="..\..\src\ft2_gui.c" />
<ClCompile Include="..\..\src\ft2_help.c" />
<ClCompile Include="..\..\src\ft2_inst_ed.c" />
+ <ClCompile Include="..\..\src\ft2_intrp_table.c" />
<ClCompile Include="..\..\src\ft2_keyboard.c" />
<ClCompile Include="..\..\src\ft2_main.c" />
+ <ClCompile Include="..\..\src\ft2_midi.c" />
+ <ClCompile Include="..\..\src\ft2_mix.c" />
+ <ClCompile Include="..\..\src\ft2_module_loader.c" />
+ <ClCompile Include="..\..\src\ft2_module_saver.c" />
<ClCompile Include="..\..\src\ft2_mouse.c" />
<ClCompile Include="..\..\src\ft2_nibbles.c" />
+ <ClCompile Include="..\..\src\ft2_palette.c" />
+ <ClCompile Include="..\..\src\ft2_pattern_draw.c" />
+ <ClCompile Include="..\..\src\ft2_pattern_ed.c" />
+ <ClCompile Include="..\..\src\ft2_pushbuttons.c" />
+ <ClCompile Include="..\..\src\ft2_radiobuttons.c" />
<ClCompile Include="..\..\src\ft2_replayer.c" />
- <ClCompile Include="..\..\src\ft2_scopes.c" />
- <ClCompile Include="..\..\src\ft2_video.c" />
<ClCompile Include="..\..\src\ft2_sample_ed.c" />
- <ClCompile Include="..\..\src\ft2_pattern_ed.c" />
+ <ClCompile Include="..\..\src\ft2_sample_ed_features.c" />
<ClCompile Include="..\..\src\ft2_sample_loader.c" />
<ClCompile Include="..\..\src\ft2_sample_saver.c" />
- <ClCompile Include="..\..\src\ft2_diskop.c" />
- <ClCompile Include="..\..\src\ft2_unicode.c" />
- <ClCompile Include="..\..\src\ft2_midi.c" />
- <ClCompile Include="..\..\src\ft2_wav_renderer.c" />
- <ClCompile Include="..\..\src\ft2_trim.c" />
- <ClCompile Include="..\..\src\ft2_checkboxes.c" />
- <ClCompile Include="..\..\src\ft2_pushbuttons.c" />
- <ClCompile Include="..\..\src\ft2_radiobuttons.c" />
+ <ClCompile Include="..\..\src\ft2_sampling.c" />
+ <ClCompile Include="..\..\src\ft2_scopedraw.c" />
+ <ClCompile Include="..\..\src\ft2_scopes.c" />
<ClCompile Include="..\..\src\ft2_scrollbars.c" />
- <ClCompile Include="..\..\src\ft2_textboxes.c" />
+ <ClCompile Include="..\..\src\ft2_structs.c" />
<ClCompile Include="..\..\src\ft2_sysreqs.c" />
- <ClCompile Include="..\..\src\ft2_module_loader.c" />
- <ClCompile Include="..\..\src\ft2_module_saver.c" />
- <ClCompile Include="..\..\src\ft2_mix.c" />
- <ClCompile Include="..\..\src\ft2_sampling.c" />
- <ClCompile Include="..\..\src\ft2_audioselector.c" />
- <ClCompile Include="..\..\src\ft2_events.c" />
- <ClCompile Include="..\..\src\ft2_pattern_draw.c" />
- <ClCompile Include="..\..\src\ft2_sample_ed_features.c" />
+ <ClCompile Include="..\..\src\ft2_tables.c" />
+ <ClCompile Include="..\..\src\ft2_textboxes.c" />
+ <ClCompile Include="..\..\src\ft2_trim.c" />
+ <ClCompile Include="..\..\src\ft2_unicode.c" />
+ <ClCompile Include="..\..\src\ft2_video.c" />
+ <ClCompile Include="..\..\src\ft2_wav_renderer.c" />
<ClCompile Include="..\..\src\rtmidi\RtMidi.cpp">
<Filter>rtmidi</Filter>
</ClCompile>
@@ -43,17 +50,15 @@
<ClCompile Include="..\..\src\rtmidi\rtmidi_c.cpp">
<Filter>rtmidi</Filter>
</ClCompile>
- <ClCompile Include="..\..\src\ft2_palette.c" />
- <ClCompile Include="..\..\src\ft2_scopedraw.c" />
- <ClCompile Include="..\..\src\ft2_tables.c" />
- <ClCompile Include="..\..\src\ft2_intrp_table.c" />
- <ClCompile Include="..\..\src\ft2_bmp.c" />
- <ClCompile Include="..\..\src\gfxdata\ft2_bmp_nibbles.c">
+ <ClCompile Include="..\..\src\gfxdata\ft2_bmp_fonts.c">
<Filter>graphics</Filter>
</ClCompile>
- <ClCompile Include="..\..\src\gfxdata\ft2_bmp_midi.c">
+ <ClCompile Include="..\..\src\gfxdata\ft2_bmp_gui.c">
<Filter>graphics</Filter>
</ClCompile>
+ <ClCompile Include="..\..\src\gfxdata\ft2_bmp_instr.c">
+ <Filter>graphics</Filter>
+ </ClCompile>
<ClCompile Include="..\..\src\gfxdata\ft2_bmp_logo.c">
<Filter>graphics</Filter>
</ClCompile>
@@ -60,164 +65,159 @@
<ClCompile Include="..\..\src\gfxdata\ft2_bmp_looppins.c">
<Filter>graphics</Filter>
</ClCompile>
- <ClCompile Include="..\..\src\gfxdata\ft2_bmp_mouse.c">
+ <ClCompile Include="..\..\src\gfxdata\ft2_bmp_midi.c">
<Filter>graphics</Filter>
</ClCompile>
- <ClCompile Include="..\..\src\gfxdata\ft2_bmp_fonts.c">
+ <ClCompile Include="..\..\src\gfxdata\ft2_bmp_mouse.c">
<Filter>graphics</Filter>
</ClCompile>
- <ClCompile Include="..\..\src\gfxdata\ft2_bmp_instr.c">
+ <ClCompile Include="..\..\src\gfxdata\ft2_bmp_nibbles.c">
<Filter>graphics</Filter>
</ClCompile>
<ClCompile Include="..\..\src\gfxdata\ft2_bmp_scopes.c">
<Filter>graphics</Filter>
</ClCompile>
- <ClCompile Include="..\..\src\gfxdata\ft2_bmp_gui.c">
- <Filter>graphics</Filter>
- </ClCompile>
- <ClCompile Include="..\..\src\ft2_structs.c" />
- <ClCompile Include="..\..\src\ft2_about.c" />
</ItemGroup>
<ItemGroup>
- <ClInclude Include="..\..\src\ft2_audio.h">
+ <ClInclude Include="..\..\src\rtmidi\RtMidi.h">
+ <Filter>rtmidi</Filter>
+ </ClInclude>
+ <ClInclude Include="..\..\src\rtmidi\rtmidi_c.h">
+ <Filter>rtmidi</Filter>
+ </ClInclude>
+ <ClInclude Include="..\..\src\ft2_about.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_config.h">
+ <ClInclude Include="..\..\src\ft2_audio.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_edit.h">
+ <ClInclude Include="..\..\src\ft2_audioselector.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_gui.h">
+ <ClInclude Include="..\..\src\ft2_bmp.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_header.h">
+ <ClInclude Include="..\..\src\ft2_checkboxes.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_help.h">
+ <ClInclude Include="..\..\src\ft2_config.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_inst_ed.h">
+ <ClInclude Include="..\..\src\ft2_diskop.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_keyboard.h">
+ <ClInclude Include="..\..\src\ft2_edit.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_mouse.h">
+ <ClInclude Include="..\..\src\ft2_events.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_nibbles.h">
+ <ClInclude Include="..\..\src\ft2_gfxdata.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_replayer.h">
+ <ClInclude Include="..\..\src\ft2_gui.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_scopes.h">
+ <ClInclude Include="..\..\src\ft2_header.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_sample_ed.h">
+ <ClInclude Include="..\..\src\ft2_help.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_pattern_ed.h">
+ <ClInclude Include="..\..\src\ft2_inst_ed.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_sample_loader.h">
+ <ClInclude Include="..\..\src\ft2_intrp_table.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_sample_saver.h">
+ <ClInclude Include="..\..\src\ft2_keyboard.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_video.h">
+ <ClInclude Include="..\..\src\ft2_midi.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_diskop.h">
+ <ClInclude Include="..\..\src\ft2_mix.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_unicode.h">
+ <ClInclude Include="..\..\src\ft2_mix_macros.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_midi.h">
+ <ClInclude Include="..\..\src\ft2_module_loader.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_wav_renderer.h">
+ <ClInclude Include="..\..\src\ft2_module_saver.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_about.h">
+ <ClInclude Include="..\..\src\ft2_mouse.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_trim.h">
+ <ClInclude Include="..\..\src\ft2_nibbles.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_checkboxes.h">
+ <ClInclude Include="..\..\src\ft2_palette.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_pushbuttons.h">
+ <ClInclude Include="..\..\src\ft2_pattern_draw.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_radiobuttons.h">
+ <ClInclude Include="..\..\src\ft2_pattern_ed.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_scrollbars.h">
+ <ClInclude Include="..\..\src\ft2_pushbuttons.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_textboxes.h">
+ <ClInclude Include="..\..\src\ft2_radiobuttons.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_sysreqs.h">
+ <ClInclude Include="..\..\src\ft2_replayer.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_module_loader.h">
+ <ClInclude Include="..\..\src\ft2_sample_ed.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_module_saver.h">
+ <ClInclude Include="..\..\src\ft2_sample_ed_features.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_gfxdata.h">
+ <ClInclude Include="..\..\src\ft2_sample_loader.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_mix.h">
+ <ClInclude Include="..\..\src\ft2_sample_saver.h">
<Filter>headers</Filter>
</ClInclude>
<ClInclude Include="..\..\src\ft2_sampling.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_audioselector.h">
+ <ClInclude Include="..\..\src\ft2_scopedraw.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_mix_macros.h">
+ <ClInclude Include="..\..\src\ft2_scopes.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_events.h">
+ <ClInclude Include="..\..\src\ft2_scrollbars.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_pattern_draw.h">
+ <ClInclude Include="..\..\src\ft2_structs.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_palette.h">
+ <ClInclude Include="..\..\src\ft2_sysreqs.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_sample_ed_features.h">
+ <ClInclude Include="..\..\src\ft2_tables.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\rtmidi\RtMidi.h">
- <Filter>rtmidi</Filter>
- </ClInclude>
- <ClInclude Include="..\..\src\rtmidi\rtmidi_c.h">
- <Filter>rtmidi</Filter>
- </ClInclude>
- <ClInclude Include="..\..\src\ft2_scopedraw.h">
+ <ClInclude Include="..\..\src\ft2_textboxes.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_tables.h">
+ <ClInclude Include="..\..\src\ft2_trim.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_intrp_table.h">
+ <ClInclude Include="..\..\src\ft2_unicode.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_bmp.h">
+ <ClInclude Include="..\..\src\ft2_video.h">
<Filter>headers</Filter>
</ClInclude>
- <ClInclude Include="..\..\src\ft2_structs.h">
+ <ClInclude Include="..\..\src\ft2_wav_renderer.h">
<Filter>headers</Filter>
</ClInclude>
</ItemGroup>