Fix (#753)

Author: shresthan3

src/tests/roc_audio/bench_codecs.cpp

@@ -0,0 +1,81 @@
+#include <benchmark/benchmark.h>
+#include "roc_audio/pcm_encoder.h"
+#include "roc_audio/pcm_decoder.h"
+#include "roc_audio/sample_spec.h"
+#include "roc_audio/channel_set.h"
+#include "roc_audio/channel_defs.h"
+#include <vector>
+#include <cstdint>
+
+using namespace roc::audio;
+
+static void bench_pcm_encoder(benchmark::State& s) {
+    ChannelSet channels(
+        ChanLayout_Surround,
+        ChanOrder_Smpte,
+        ChanMask_Surround_Stereo
+    );
+
+    SampleSpec spec(
+        48000,
+        PcmFormat_Float32,
+        channels
+    );
+
+    PcmEncoder enc(spec);
+
+    const size_t samples_per_channel = 48000;
+    const size_t num_channels = channels.num_channels();
+    const size_t total_samples = samples_per_channel * num_channels;
+
+    std::vector<float> samples(total_samples, 0.0f);
+
+    // encoded_byte_count expects samples per channel
+    size_t frame_size = enc.encoded_byte_count(samples_per_channel);
+    std::vector<uint8_t> frame(frame_size);
+
+    for (auto _ : s) {
+        enc.begin(frame.data(), frame_size);
+        enc.write(samples.data(), total_samples);
+        enc.end();
+    }
+
+    s.SetItemsProcessed(int64_t(s.iterations()) * int64_t(total_samples));
+}
+
+static void bench_pcm_decoder(benchmark::State& s) {
+    ChannelSet channels(
+        ChanLayout_Surround,
+        ChanOrder_Smpte,
+        ChanMask_Surround_Stereo
+    );
+
+    SampleSpec spec(
+        48000,
+        PcmFormat_Float32,
+        channels
+    );
+
+    PcmDecoder dec(spec);
+
+    const size_t samples_per_channel = 48000;
+    const size_t num_channels = channels.num_channels();
+    const size_t total_samples = samples_per_channel * num_channels;
+
+    std::vector<float> samples(total_samples, 0.0f);
+
+    // For PCM float32 encoded frame size (bytes) = samples_per_channel * num_channels * sizeof(float)
+    size_t frame_size = samples_per_channel * num_channels * sizeof(float);
+    std::vector<uint8_t> frame(frame_size);
+
+    for (auto _ : s) {
+        dec.begin(0, frame.data(), frame.size());
+        dec.read(samples.data(), total_samples);
+        dec.end();
+    }
+
+    s.SetItemsProcessed(int64_t(s.iterations()) * int64_t(total_samples));
+}
+
+BENCHMARK(bench_pcm_encoder);
+BENCHMARK(bench_pcm_decoder);