整理代码

video/alsa/SoundCard.h

@@ -0,0 +1,83 @@
+#ifndef A83739DB_6BC9_4B7C_8FA0_11DC60C05AA3
+#define A83739DB_6BC9_4B7C_8FA0_11DC60C05AA3
+/*
+ *******************************************************************************
+ *                                   INCLUDE
+ *******************************************************************************
+ */
+#include <alsa/asoundlib.h>
+#include <Poco/SharedPtr.h>
+#include <string>
+#include <vector>
+
+namespace Video
+{
+namespace ALSA
+{
+/*
+ *******************************************************************************
+ *                                CLASS DECLARE
+ *******************************************************************************
+ */
+class SoundCard
+{
+public:
+    struct Info
+    {
+        std::string                   id;
+        std::string                   device;
+        std::string                   name;
+        std::string                   longname;
+        std::string                   driver;
+        std::string                   components;
+        std::string                   mixername;
+        bool                          access[SND_PCM_ACCESS_LAST + 1];
+        std::vector<snd_pcm_format_t> formats;
+        int                           channels;
+        std::vector<uint32_t>         sampleRates;
+        std::vector<uint32_t>         bufferSizes;
+        bool                          supportCapture;
+        bool                          supportPlayback;
+
+        bool operator==(const Info& other)
+        {
+            return components == other.components;
+        }
+    };
+
+    using Ptr        = Poco::SharedPtr<SoundCard>;
+    using SoundCards = std::vector<Ptr>;
+
+private:
+    SoundCard(int index);
+    void initialize();
+
+public:
+    ~SoundCard();
+
+    Info& info();
+
+private:
+    int  _index;
+    Info _info;
+
+public:
+    static SoundCards getSoundCards();
+
+    template <class F> static SoundCards getSoundCards(F&& filter);
+};
+
+template <class F> inline SoundCard::SoundCards SoundCard::getSoundCards(F&& filter)
+{
+    SoundCard::SoundCards cards;
+    for (auto& card : ALSA::SoundCard::getSoundCards())
+    {
+        if (filter(card))
+            cards.push_back(card);
+    }
+
+    return cards;
+}
+}
+}
+#endif