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Lua: All usage of double converted to float (#4502)

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* Lua: All usage of double converted to float. printf("%f") still uses promotion to double, (floating point va_args are always promoted to double)
Speed improvements:
 * reordering of rotable to put most used tables at the top
 * caching of last found global table
Use real pointer to rotable instead of misusing void* to pass integer value
Lua internal traces now turned on by TRACE_LUA_INTERNALS cmake option

* Replaced floating point division with multiplication (where possible), the hardware FPU is much faster at multiplication vs division.
stb_image: enabled STBI_NO_HDR and STBI_NO_LINEAR (removes code that we don't need)
This commit is contained in:
Damjan Adamic
2017-02-26 12:59:39 +01:00
committed by Bertrand Songis
parent 3b149a22d1
commit a1a58ad8f8
16 changed files with 129 additions and 107 deletions
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radio/src/audio_arm.cpp
+3 -3
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@@ -661,8 +661,8 @@ int ToneContext::mixBuffer(AudioBuffer * buffer, int volume, unsigned int fade)
if (fragment.tone.freq != state.freq) {
state.freq = fragment.tone.freq;
state.step = limit<float>(1, float(DIM(sineValues)*fragment.tone.freq) / AUDIO_SAMPLE_RATE, 512);
state.volume = evalVolumeRatio(fragment.tone.freq, volume);
state.step = limit<float>(1, float(fragment.tone.freq) * (float(DIM(sineValues))/float(AUDIO_SAMPLE_RATE)), 512);
state.volume = 1.0f / evalVolumeRatio(fragment.tone.freq, volume);
}
if (fragment.tone.freqIncr) {
@@ -699,7 +699,7 @@ int ToneContext::mixBuffer(AudioBuffer * buffer, int volume, unsigned int fade)
}
for (int i=0; i<points; i++) {
int16_t sample = sineValues[int(toneIdx)] / state.volume;
int16_t sample = sineValues[int(toneIdx)] * state.volume;
mixSample(&buffer->data[i], sample, fade);
toneIdx += state.step;
if ((unsigned int)toneIdx >= DIM(sineValues))