1 files changed, 133 insertions, 0 deletions
diff --git a/src/SFML/Audio/SoundFileWriterFlac.cpp b/src/SFML/Audio/SoundFileWriterFlac.cpp
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+++ b/src/SFML/Audio/SoundFileWriterFlac.cpp
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+////////////////////////////////////////////////////////////
+//
+// SFML - Simple and Fast Multimedia Library
+// Copyright (C) 2007-2015 Laurent Gomila (laurent@sfml-dev.org)
+//
+// This software is provided 'as-is', without any express or implied warranty.
+// In no event will the authors be held liable for any damages arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it freely,
+// subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented;
+//    you must not claim that you wrote the original software.
+//    If you use this software in a product, an acknowledgment
+//    in the product documentation would be appreciated but is not required.
+//
+// 2. Altered source versions must be plainly marked as such,
+//    and must not be misrepresented as being the original software.
+//
+// 3. This notice may not be removed or altered from any source distribution.
+//
+////////////////////////////////////////////////////////////
+
+////////////////////////////////////////////////////////////
+// Headers
+////////////////////////////////////////////////////////////
+#include <SFML/Audio/SoundFileWriterFlac.hpp>
+#include <SFML/System/Err.hpp>
+#include <algorithm>
+#include <cctype>
+#include <cassert>
+
+
+namespace sf
+{
+namespace priv
+{
+////////////////////////////////////////////////////////////
+bool SoundFileWriterFlac::check(const std::string& filename)
+{
+    std::string extension = filename.substr(filename.find_last_of(".") + 1);
+    std::transform(extension.begin(), extension.end(), extension.begin(), ::tolower);
+
+    return extension == "flac";
+}
+
+
+////////////////////////////////////////////////////////////
+SoundFileWriterFlac::SoundFileWriterFlac() :
+m_encoder     (NULL),
+m_channelCount(0),
+m_samples32   ()
+{
+}
+
+
+////////////////////////////////////////////////////////////
+SoundFileWriterFlac::~SoundFileWriterFlac()
+{
+    close();
+}
+
+
+////////////////////////////////////////////////////////////
+bool SoundFileWriterFlac::open(const std::string& filename, unsigned int sampleRate, unsigned int channelCount)
+{
+    // Create the encoder
+    m_encoder = FLAC__stream_encoder_new();
+    if (!m_encoder)
+    {
+        err() << "Failed to write flac file \"" << filename << "\" (failed to allocate encoder)" << std::endl;
+        return false;
+    }
+
+    // Setup the encoder
+    FLAC__stream_encoder_set_channels(m_encoder, channelCount);
+    FLAC__stream_encoder_set_bits_per_sample(m_encoder, 16);
+    FLAC__stream_encoder_set_sample_rate(m_encoder, sampleRate);
+
+    // Initialize the output stream
+    if (FLAC__stream_encoder_init_file(m_encoder, filename.c_str(), NULL, NULL) != FLAC__STREAM_ENCODER_INIT_STATUS_OK)
+    {
+        err() << "Failed to write flac file \"" << filename << "\" (failed to open the file)" << std::endl;
+        close();
+        return false;
+    }
+
+    // Store the channel count
+    m_channelCount = channelCount;
+
+    return true;
+}
+
+
+////////////////////////////////////////////////////////////
+void SoundFileWriterFlac::write(const Int16* samples, Uint64 count)
+{
+    while (count > 0)
+    {
+        // Make sure that we don't process too many samples at once
+        unsigned int frames = std::min(static_cast<unsigned int>(count / m_channelCount), 10000u);
+
+        // Convert the samples to 32-bits
+        m_samples32.assign(samples, samples + frames * m_channelCount);
+
+        // Write them to the FLAC stream
+        FLAC__stream_encoder_process_interleaved(m_encoder, &m_samples32[0], frames);
+
+        // Next chunk
+        count -= m_samples32.size();
+        samples += m_samples32.size();
+    }
+}
+
+
+////////////////////////////////////////////////////////////
+void SoundFileWriterFlac::close()
+{
+    if (m_encoder)
+    {
+        // Close the output stream
+        FLAC__stream_encoder_finish(m_encoder);
+
+        // Destroy the encoder
+        FLAC__stream_encoder_delete(m_encoder);
+        m_encoder = NULL;
+    }
+}
+
+} // namespace priv
+
+} // namespace sf