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DATV demod: implemented audio and video mute. Corrected audio volume

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This commit is contained in:
f4exb
2019-03-23 06:06:42 +01:00
parent 9e668f5f22
commit 2d6730678d
11 changed files with 101 additions and 71 deletions
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plugins/channelrx/demoddatv/datvideorender.cpp
+34 -33
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@@ -37,8 +37,6 @@ DATVideoRender::DATVideoRender(QWidget *parent) : TVScreen(true, parent)
m_formatCtx = nullptr;
m_videoDecoderCtx = nullptr;
m_swsCtx = nullptr;
m_audioBuffer.resize(1 << 14);
m_audioBufferFill = 0;
m_audioFifo = nullptr;
m_audioSWR = nullptr;
m_audioSampleRate = 48000;
@@ -46,6 +44,7 @@ DATVideoRender::DATVideoRender(QWidget *parent) : TVScreen(true, parent)
m_videoStreamIndex = -1;
m_audioStreamIndex = -1;
m_audioMute = false;
m_videoMute = false;
m_audioVolume = 0;
m_updateAudioResampler = false;
@@ -481,7 +480,7 @@ bool DATVideoRender::RenderStream()
}
//Video channel
if (packet.stream_index == m_videoStreamIndex)
if ((packet.stream_index == m_videoStreamIndex) && (!m_videoMute))
{
memset(m_frame, 0, sizeof(AVFrame));
av_frame_unref(m_frame);
@@ -580,7 +579,7 @@ bool DATVideoRender::RenderStream()
}
}
// Audio channel
else if ((packet.stream_index == m_audioStreamIndex) && (m_audioFifo) && (swr_is_initialized(m_audioSWR)))
else if ((packet.stream_index == m_audioStreamIndex) && (m_audioFifo) && (swr_is_initialized(m_audioSWR)) && (!m_audioMute))
{
if (m_updateAudioResampler)
{
@@ -597,37 +596,45 @@ bool DATVideoRender::RenderStream()
{
if (gotFrame)
{
uint16_t *audioBuffer;
int16_t *audioBuffer;
av_samples_alloc((uint8_t**) &audioBuffer, nullptr, 2, m_frame->nb_samples, AV_SAMPLE_FMT_S16, 0);
int frame_count = swr_convert(m_audioSWR, (uint8_t**) &audioBuffer, m_frame->nb_samples, (const uint8_t**) m_frame->data, m_frame->nb_samples);
// direct writing:
// int ret = m_audioFifo->write((const quint8*) &audioBuffer[0], frame_count);
// if (ret < frame_count) {
// qDebug("DATVideoRender::RenderStream: audio frames missing %d vs %d", ret, frame_count);
// }
if (m_audioFifoBufferIndex + frame_count < m_audioFifoBufferSize)
{
std::copy(&audioBuffer[0], &audioBuffer[2*frame_count], &m_audioFifoBuffer[2*m_audioFifoBufferIndex]);
m_audioFifoBufferIndex += frame_count;
}
else
{
int remainder = m_audioFifoBufferSize - m_audioFifoBufferIndex;
std::copy(&audioBuffer[0], &audioBuffer[2*remainder], &m_audioFifoBuffer[2*m_audioFifoBufferIndex]);
m_audioFifo->write((const quint8*) &m_audioFifoBuffer[0], m_audioFifoBufferSize);
std::copy(&audioBuffer[2*remainder], &audioBuffer[2*frame_count], &m_audioFifoBuffer[0]);
m_audioFifoBufferIndex = frame_count - remainder;
}
// m_audioFifoBufferIndex += frame_count;
// if (m_audioFifoBufferIndex >= m_audioFifoBufferSize)
// buffered writing:
// if (m_audioFifoBufferIndex + frame_count < m_audioFifoBufferSize)
// {
// m_audioFifo->write((const quint8*)&m_audioFifoBuffer[0], m_audioFifoBufferSize);
// m_audioFifoBufferIndex -= m_audioFifoBufferSize;
// std::copy(&audioBuffer[0], &audioBuffer[2*frame_count], &m_audioFifoBuffer[2*m_audioFifoBufferIndex]);
// m_audioFifoBufferIndex += frame_count;
// }
// else
// {
// int remainder = m_audioFifoBufferSize - m_audioFifoBufferIndex;
// std::copy(&audioBuffer[0], &audioBuffer[2*remainder], &m_audioFifoBuffer[2*m_audioFifoBufferIndex]);
// m_audioFifo->write((const quint8*) &m_audioFifoBuffer[0], m_audioFifoBufferSize);
// std::copy(&audioBuffer[2*remainder], &audioBuffer[2*frame_count], &m_audioFifoBuffer[0]);
// m_audioFifoBufferIndex = frame_count - remainder;
// }
// Apply volume:
for (int i = 0; i < frame_count; i++)
{
m_audioFifoBuffer[2*m_audioFifoBufferIndex] = m_audioVolume * audioBuffer[2*i];
m_audioFifoBuffer[2*m_audioFifoBufferIndex+1] = m_audioVolume * audioBuffer[2*i+1];
m_audioFifoBufferIndex++;
if (m_audioFifoBufferIndex >= m_audioFifoBufferSize)
{
m_audioFifo->write((const quint8*) &m_audioFifoBuffer[0], m_audioFifoBufferSize);
m_audioFifoBufferIndex = 0;
}
}
}
}
else
@@ -647,8 +654,8 @@ bool DATVideoRender::RenderStream()
void DATVideoRender::setAudioVolume(int audioVolume)
{
m_audioVolume = audioVolume < -32 ? -32 : audioVolume > 32 ? 32 : audioVolume;
m_updateAudioResampler = true;
int audioVolumeConstrained = audioVolume < 0 ? 0 : audioVolume > 100 ? 100 : audioVolume;
m_audioVolume = audioVolumeConstrained / 100.0f;
}
void DATVideoRender::setResampler()
@@ -666,9 +673,6 @@ void DATVideoRender::setResampler()
av_opt_set_int(m_audioSWR, "out_sample_rate", m_audioSampleRate, 0);
av_opt_set_sample_fmt(m_audioSWR, "in_sample_fmt", m_audioDecoderCtx->sample_fmt, 0);
av_opt_set_sample_fmt(m_audioSWR, "out_sample_fmt", AV_SAMPLE_FMT_S16, 0);
av_opt_set_int(m_audioSWR, "center_mix_level", m_audioVolume, 0);
av_opt_set_int(m_audioSWR, "surround_mix_level", m_audioVolume, 0);
av_opt_set_int(m_audioSWR, "lfe_mix_level", m_audioVolume, 0);
swr_init(m_audioSWR);
@@ -680,10 +684,7 @@ void DATVideoRender::setResampler()
<< " in_sample_rate: " << m_audioDecoderCtx->sample_rate
<< " out_sample_rate: " << m_audioSampleRate
<< " in_sample_fmt: " << m_audioDecoderCtx->sample_fmt
<< " out_sample_fmt: " << AV_SAMPLE_FMT_S16
<< " center_mix_level: " << m_audioVolume
<< " surround_mix_level: " << m_audioVolume
<< " lfe_mix_level: " << m_audioVolume;
<< " out_sample_fmt: " << AV_SAMPLE_FMT_S16;
}
bool DATVideoRender::CloseStream(QIODevice *device)