整理代码

2026-09-28 21:33:04 +08:00 · 2026-09-28 21:33:04 +08:00 · c7b4e178ec
commit c7b4e178ec
364 changed files with 59691 additions and 0 deletions
--- a/video/alsa/Output.cpp
+++ b/video/alsa/Output.cpp
@ -0,0 +1,162 @@
+/*
+ *******************************************************************************
+ *                                   INCLUDE
+ *******************************************************************************
+ */
+#include "Output.h"
+#include "PCM.h"
+#include "SoundCard.h"
+#include "Util.h"
+#include "Logger.h"
+#include "../core/System.h"
+
+namespace Video
+{
+namespace ALSA
+{
+/*
+ *******************************************************************************
+ *                                CLASS DEFINE
+ *******************************************************************************
+ */
+Output::Output(const std::string& arg): Core::AudioOutput("ALSA::Output(" + arg + ")")
+{
+    auto pos     = arg.find(':');
+    _soundCardID = (pos != std::string::npos) ? arg.substr(pos + 1) : arg;
+}
+
+Output::~Output()
+{
+}
+
+void Output::initialize()
+{
+    setSoundCardEstablished(tryEstablishSoundCard());
+    if (!getSoundCardEstablished())
+        runSearchTask();
+}
+
+void Output::deinitialize()
+{
+    _searchTask.cancel();
+    if (getSoundCardEstablished())
+        _pcm.close();
+}
+
+void Output::onConfigChanged(ParameterNames& names)
+{
+}
+
+void Output::writeFrame(Core::Frame::Ptr pFrame)
+{
+    if (!getSoundCardEstablished())
+        return;
+
+    int rc;
+
+    if (SND_PCM_ACCESS_RW_NONINTERLEAVED == _access)
+    {
+        uint8_t* ptrs[_channels];
+        for (int i = 0; i < _channels; i++)
+            ptrs[i] = pFrame->data[i].get();
+
+        rc = _pcm.write(ptrs, _samples);
+    }
+    else
+    {
+        rc = _pcm.write(pFrame->data[0].get(), _samples);
+    }
+
+    if (rc < 0)
+    {
+        setSoundCardEstablished(false);
+        _pcm.close();
+    }
+}
+
+SoundCard::Ptr Output::getSoundCard()
+{
+    auto cards = SoundCard::getSoundCards([this](SoundCard::Ptr pCard) -> bool
+                                          { return (pCard->info().components == _soundCardID); });
+
+    if (cards.size() > 0)
+        return *(cards.begin());
+
+    return nullptr;
+}
+
+bool Output::tryEstablishSoundCard()
+{
+    try
+    {
+        auto pCard = getSoundCard();
+        if (pCard)
+        {
+            int rc = _pcm.open(pCard, SND_PCM_STREAM_PLAYBACK);
+            if (rc >= 0)
+            {
+                const auto sampleRate   = Util::getSuitableSampleRate(pCard, getSampleRate());
+                const auto access       = Util::getSuitableAccess(pCard, sampleFormatIsPlanar(getSampleFormat()));
+                const auto format       = Util::getSuitableSampleFormat(pCard, getSampleFormat());
+                const auto sampleFormat = Util::convertSampleFormat(format, access == SND_PCM_ACCESS_RW_INTERLEAVED);
+
+                logger().debug("%s: Suitable config found: %s %s %uHz", name(),
+                               std::string(snd_pcm_access_name(access)), std::string(snd_pcm_format_name(format)),
+                               sampleRate);
+
+                rc = _pcm.config(access, format, pCard->info().channels, sampleRate, getFrameSize(),
+                                 sampleFormatBytesPerSample(sampleFormat));
+                if (rc >= 0)
+                {
+                    if (pCard->info().channels == 1 && getChannelLayout() != Core::ChannelLayout::MONO)
+                        setChannelLayout(Core::ChannelLayout::MONO);
+
+                    setSampleRate(sampleRate);
+                    setSampleFormat(sampleFormat);
+
+                    _channels = channelLayoutChannels(getChannelLayout());
+                    _samples  = getFrameSize();
+                    _access   = access;
+
+                    serialCodeManager().increment();
+                    return true;
+                }
+
+                _pcm.close();
+            }
+        }
+    }
+    catch (Poco::Exception& e)
+    {
+        logger().error("%s: %s", name(), e.displayText());
+    }
+    catch (std::exception& e)
+    {
+        logger().error("%s: %s", name(), std::string(e.what()));
+    }
+
+    return false;
+}
+
+void Output::runSearchTask()
+{
+    if (_searchTask.isRunning())
+        return;
+
+    _searchTask.run(
+        [this](std::atomic<bool>& isCancelled) -> void
+        {
+            while (!isCancelled)
+            {
+                if (tryEstablishSoundCard())
+                {
+                    setSoundCardEstablished(true);
+                    break;
+                }
+
+                Poco::Thread::sleep(2000);
+            }
+        });
+}
+}
+}