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Improvements to mal_calculate_cpu_speed_factor().

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This commit is contained in:
David Reid
2018-05-23 19:49:51 +10:00
parent 21962f53de
commit 20e4813753
1 changed files with 20 additions and 13 deletions
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mini_al.h
+20 -13
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@@ -20961,17 +20961,23 @@ float mal_calculate_cpu_speed_factor()
mal_uint32 channelsIn = 2;
mal_uint32 channelsOut = 6;
// Using the heap here to avoid an unnecessary static memory allocation. Also too big for the stack. TODO: Make this a single malloc. Also doesn't need to be aligned.
mal_uint8* pInputFrames = (mal_uint8*)mal_aligned_malloc(sampleRateIn * channelsIn * sizeof(*pInputFrames), MAL_SIMD_ALIGNMENT);
if (pInputFrames == NULL) {
// Using the heap here to avoid an unnecessary static memory allocation. Also too big for the stack.
mal_uint8* pInputFrames = NULL;
float* pOutputFrames = NULL;
size_t inputDataSize = sampleRateIn * channelsIn * sizeof(*pInputFrames);
size_t outputDataSize = sampleRateOut * channelsOut * sizeof(*pOutputFrames);
void* pData = mal_malloc(inputDataSize + outputDataSize);
if (pData == NULL) {
return 1;
}
float* pOutputFrames = (float*)mal_aligned_malloc(sampleRateOut * channelsOut * sizeof(*pOutputFrames), MAL_SIMD_ALIGNMENT);
if (pOutputFrames == NULL) {
mal_aligned_free(pInputFrames);
return 1;
}
pInputFrames = (mal_uint8*)pData;
pOutputFrames = (float*)(pInputFrames + inputDataSize);
mal_calculate_cpu_speed_factor_data data;
data.pInputFrames = pInputFrames;
@@ -20979,6 +20985,10 @@ float mal_calculate_cpu_speed_factor()
mal_dsp_config config = mal_dsp_config_init(mal_format_u8, channelsIn, sampleRateIn, mal_format_f32, channelsOut, sampleRateOut, mal_calculate_cpu_speed_factor__on_read, &data);
// Use linear sample rate conversion because it's the simplest and least likely to cause skewing as a result of tweaks to default
// configurations in the future.
config.srcAlgorithm = mal_src_algorithm_linear;
// Experiment: Disable SIMD extensions when profiling just to try and keep things a bit more consistent. The idea is to get a general
// indication on the speed of the system, but SIMD is used more heavily in the DSP pipeline than in the general case which may make
// the results a little less realistic.
@@ -20990,8 +21000,7 @@ float mal_calculate_cpu_speed_factor()
mal_dsp dsp;
mal_result result = mal_dsp_init(&config, &dsp);
if (result != MAL_SUCCESS) {
mal_aligned_free(pInputFrames);
mal_aligned_free(pOutputFrames);
mal_free(pData);
return 1;
}
@@ -21012,9 +21021,7 @@ float mal_calculate_cpu_speed_factor()
executionTimeInSeconds /= iterationCount;
mal_aligned_free(pInputFrames);
mal_aligned_free(pOutputFrames);
mal_free(pData);
return (float)(executionTimeInSeconds * f);
}