pcm utility function: duration_ms (#275)

* utils::duration_ms * update version
Raffaello · Nov 10, 2023 · 5940002 · 5940002
1 parent a67ed5a
commit 5940002
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Showing 4 changed files with 31 additions and 1 deletion.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -5,7 +5,7 @@ if(DEFINED ENV{VCPKG_ROOT} AND NOT DEFINED CMAKE_TOOLCHAIN_FILE)
 endif()
 
 
-project ("sdl2-hyper-sonic-drivers" VERSION 0.14.0 DESCRIPTION "SDL2 based Hyper-Sonic Drivers for emulating old soundcards")
+project ("sdl2-hyper-sonic-drivers" VERSION 0.15.0 DESCRIPTION "SDL2 based Hyper-Sonic Drivers for emulating old soundcards")
 include (TestBigEndian)
 TEST_BIG_ENDIAN(IS_BIG_ENDIAN)
 if(IS_BIG_ENDIAN)

diff --git a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/utils/sound.cpp b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/utils/sound.cpp
@@ -61,4 +61,14 @@ namespace HyperSonicDrivers::utils
 
         return std::make_shared<audio::PCMSound>(sound1->group, sound1->stereo, sound1->freq, dataSize, data);
     }
+
+    uint32_t duration_ms(const std::shared_ptr<audio::PCMSound>& sound)
+    {
+        uint32_t ms = sound->dataSize;
+
+        if (sound->stereo)
+            ms /= 2;
+
+        return  ms * 1000 / sound->freq;
+    }
 }
diff --git a/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/utils/sound.hpp b/sdl2-hyper-sonic-drivers/src/HyperSonicDrivers/utils/sound.hpp
@@ -24,4 +24,6 @@ namespace HyperSonicDrivers::utils
     std::shared_ptr<audio::PCMSound> append(
         const std::shared_ptr<audio::PCMSound>& sound1,
         const std::shared_ptr<audio::PCMSound>& sound2);
+
+    uint32_t duration_ms(const std::shared_ptr<audio::PCMSound>& sound);
 }
diff --git a/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/utils/TestSound.cpp b/sdl2-hyper-sonic-drivers/test/HyperSonicDrivers/utils/TestSound.cpp
@@ -63,6 +63,24 @@ namespace HyperSonicDrivers::utils
 
         ASSERT_EQ(s1, s2);
     }
+
+    TEST(utils, duration_ms)
+    {
+        const uint32_t size = 44100 * 2;
+        auto data = std::make_shared<int16_t[]>(size);
+
+        auto s1 = std::make_shared<PCMSound>(eChannelGroup::Plain, true, 44100, size, data);
+        auto s2 = std::make_shared<PCMSound>(eChannelGroup::Plain, false, 44100, size, data);
+        auto s3 = std::make_shared<PCMSound>(eChannelGroup::Plain, false, 44100, 11025 * 7, data);
+        auto s4 = std::make_shared<PCMSound>(eChannelGroup::Plain, false, 8000, size, data);
+        auto s5 = std::make_shared<PCMSound>(eChannelGroup::Plain, true, 8000, size, data);
+
+        EXPECT_EQ(duration_ms(s1), 1000);
+        EXPECT_EQ(duration_ms(s2), 2000);
+        EXPECT_EQ(duration_ms(s3), 1750);
+        EXPECT_EQ(duration_ms(s4), 11025);
+        EXPECT_EQ(duration_ms(s5), 5512);
+    }
 }
 
 int main(int argc, char** argv)