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project/fm_viewer/fav/AudioResampler.cpp

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+/******************************************************************************
+    QtAV:  Multimedia framework based on Qt and FFmpeg
+    Copyright (C) 2012-2016 Wang Bin <wbsecg1@gmail.com>
+
+*   This file is part of QtAV
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Lesser General Public
+    License as published by the Free Software Foundation; either
+    version 2.1 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public
+    License along with this library; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+******************************************************************************/
+
+#include "AudioResampler.h"
+#include "AudioFormat.h"
+#include "AudioResampler_p.h"
+#include "factory.h"
+#include "mkid.h"
+#include "Logger.h"
+
+namespace FAV {
+FACTORY_DEFINE(AudioResampler)
+
+AudioResamplerId AudioResamplerId_FF = mkid::id32base36_6<'F', 'F', 'm', 'p', 'e', 'g'>::value;
+AudioResamplerId AudioResamplerId_Libav = mkid::id32base36_5<'L', 'i', 'b', 'a', 'v'>::value;
+
+extern bool RegisterAudioResamplerFF_Man();
+extern bool RegisterAudioResamplerLibav_Man();
+void AudioResampler::registerAll()
+{
+    static bool done = false;
+    if (done)
+        return;
+    done = true;
+#if QTAV_HAVE(SWRESAMPLE)    
+    RegisterAudioResamplerFF_Man();
+#endif
+#if QTAV_HAVE(AVRESAMPLE)
+    RegisterAudioResamplerLibav_Man();
+#endif
+}
+
+AudioResampler::AudioResampler(AudioResamplerPrivate& d):DPTR_INIT(&d)
+{
+}
+
+AudioResampler::~AudioResampler()
+{
+}
+
+QByteArray AudioResampler::outData() const
+{
+    return d_func().data_out;
+}
+
+bool AudioResampler::prepare()
+{
+    if (!inAudioFormat().isValid()) {
+        qWarning("src audio parameters 'channel layout(or channels), sample rate and sample format must be set before initialize resampler");
+        return false;
+    }
+    return true;
+}
+
+bool AudioResampler::convert(const quint8 **data)
+{
+    Q_UNUSED(data);
+    return false;
+}
+
+void AudioResampler::setSpeed(qreal speed)
+{
+    DPTR_D(AudioResampler);
+    if (d.speed == speed)
+        return;
+    d.speed = speed;
+    prepare();
+}
+
+qreal AudioResampler::speed() const
+{
+    return d_func().speed;
+}
+
+
+void AudioResampler::setInAudioFormat(const AudioFormat& format)
+{
+    DPTR_D(AudioResampler);
+    if (d.in_format == format)
+        return;
+    d.in_format = format;
+    prepare();
+}
+
+AudioFormat& AudioResampler::inAudioFormat()
+{
+    return d_func().in_format;
+}
+
+const AudioFormat& AudioResampler::inAudioFormat() const
+{
+    return d_func().in_format;
+}
+
+void AudioResampler::setOutAudioFormat(const AudioFormat& format)
+{
+    DPTR_D(AudioResampler);
+    if (d.out_format == format)
+        return;
+    d.out_format = format;
+    prepare();
+}
+
+AudioFormat& AudioResampler::outAudioFormat()
+{
+    return d_func().out_format;
+}
+
+const AudioFormat& AudioResampler::outAudioFormat() const
+{
+    return d_func().out_format;
+}
+
+void AudioResampler::setInSampesPerChannel(int samples)
+{
+    d_func().in_samples_per_channel = samples;
+}
+
+int AudioResampler::outSamplesPerChannel() const
+{
+    return d_func().out_samples_per_channel;
+}
+
+//channel count can be computed by av_get_channel_layout_nb_channels(chl)
+void AudioResampler::setInSampleRate(int isr)
+{
+    AudioFormat af(d_func().in_format);
+    af.setSampleRate(isr);
+    setInAudioFormat(af);
+}
+
+void AudioResampler::setOutSampleRate(int osr)
+{
+    AudioFormat af(d_func().out_format);
+    af.setSampleRate(osr);
+    setOutAudioFormat(af);
+}
+
+void AudioResampler::setInSampleFormat(int isf)
+{
+    AudioFormat af(d_func().in_format);
+    af.setSampleFormatFFmpeg(isf);
+    setInAudioFormat(af);
+}
+
+void AudioResampler::setOutSampleFormat(int osf)
+{
+    AudioFormat af(d_func().out_format);
+    af.setSampleFormatFFmpeg(osf);
+    setOutAudioFormat(af);
+}
+
+void AudioResampler::setInChannelLayout(qint64 icl)
+{
+    AudioFormat af(d_func().in_format);
+    af.setChannelLayoutFFmpeg(icl);
+    setInAudioFormat(af);
+}
+
+void AudioResampler::setOutChannelLayout(qint64 ocl)
+{
+    AudioFormat af(d_func().out_format);
+    af.setChannelLayoutFFmpeg(ocl);
+    setOutAudioFormat(af);
+}
+
+void AudioResampler::setInChannels(int channels)
+{
+    AudioFormat af(d_func().in_format);
+    af.setChannels(channels);
+    setInAudioFormat(af);
+}
+
+void AudioResampler::setOutChannels(int channels)
+{
+    AudioFormat af(d_func().out_format);
+    af.setChannels(channels);
+    setOutAudioFormat(af);
+}
+
+} //namespace FAV