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vdr-plugin-femon
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vdr-plugin-femon/femonreceiver.c

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C
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/*
* Frontend Status Monitor plugin for the Video Disk Recorder
*
* See the README file for copyright information and how to reach the author.
*
*/
#include <unistd.h>
#include "femontools.h"
#include "femoncfg.h"
#include "femonreceiver.h"
cFemonReceiver::cFemonReceiver(const cChannel *Channel, int ATrack, int DTrack)
: cReceiver(Channel),
cThread("femon receiver"),
m_Mutex(),
m_Sleep(),
m_Active(false),
m_DetectH264(this),
m_DetectMPEG(this, this),
m_DetectAAC(this),
m_DetectLATM(this),
m_DetectAC3(this),
m_VideoBuffer(KILOBYTE(512), TS_SIZE, false, "Femon video"),
m_VideoType(Channel ? Channel->Vtype(): 0),
m_VideoPid(Channel ? Channel->Vpid() : 0),
m_VideoPacketCount(0),
m_VideoBitrate(0.0),
m_VideoValid(false),
m_AudioBuffer(KILOBYTE(256), TS_SIZE, false, "Femon audio"),
m_AudioPid(Channel ? Channel->Apid(ATrack) : 0),
m_AudioPacketCount(0),
m_AudioBitrate(0.0),
m_AudioValid(false),
m_AC3Buffer(KILOBYTE(256), TS_SIZE, false, "Femon AC3"),
m_AC3Pid(Channel ? Channel->Dpid(DTrack) : 0),
m_AC3PacketCount(0),
m_AC3Bitrate(0),
m_AC3Valid(false)
{
debug("%s()\n", __PRETTY_FUNCTION__);
SetPids(NULL);
AddPid(m_VideoPid);
AddPid(m_AudioPid);
AddPid(m_AC3Pid);
m_VideoBuffer.SetTimeouts(0, 100);
m_AudioBuffer.SetTimeouts(0, 100);
m_AC3Buffer.SetTimeouts(0, 100);
m_VideoInfo.codec = VIDEO_CODEC_INVALID;
m_VideoInfo.format = VIDEO_FORMAT_INVALID;
m_VideoInfo.scan = VIDEO_SCAN_INVALID;
m_VideoInfo.aspectRatio = VIDEO_ASPECT_RATIO_INVALID;
m_VideoInfo.width = 0;
m_VideoInfo.height = 0;
m_VideoInfo.frameRate = 0;
m_VideoInfo.bitrate = AUDIO_BITRATE_INVALID;
m_AudioInfo.codec = AUDIO_CODEC_UNKNOWN;
m_AudioInfo.bitrate = AUDIO_BITRATE_INVALID;
m_AudioInfo.samplingFrequency = AUDIO_SAMPLING_FREQUENCY_INVALID;
m_AudioInfo.channelMode = AUDIO_CHANNEL_MODE_INVALID;
m_AC3Info.bitrate = AUDIO_BITRATE_INVALID;
m_AC3Info.samplingFrequency = AUDIO_SAMPLING_FREQUENCY_INVALID;
m_AC3Info.bitstreamMode = AUDIO_BITSTREAM_MODE_INVALID;
m_AC3Info.audioCodingMode = AUDIO_CODING_MODE_INVALID;
m_AC3Info.dolbySurroundMode = AUDIO_DOLBY_SURROUND_MODE_INVALID;
m_AC3Info.centerMixLevel = AUDIO_CENTER_MIX_LEVEL_INVALID;
m_AC3Info.surroundMixLevel = AUDIO_SURROUND_MIX_LEVEL_INVALID;
m_AC3Info.dialogLevel = 0;
m_AC3Info.lfe = false;
}
cFemonReceiver::~cFemonReceiver(void)
{
debug("%s()\n", __PRETTY_FUNCTION__);
Deactivate();
}
void cFemonReceiver::Deactivate(void)
{
debug("%s()\n", __PRETTY_FUNCTION__);
Detach();
if (m_Active) {
m_Active = false;
m_Sleep.Signal();
if (Running())
Cancel(3);
}
}
void cFemonReceiver::Activate(bool On)
{
debug("%s(%d)\n", __PRETTY_FUNCTION__, On);
if (On)
Start();
else
Deactivate();
}
void cFemonReceiver::Receive(uchar *Data, int Length)
{
// TS packet length: TS_SIZE
if (Running() && (*Data == TS_SYNC_BYTE) && (Length == TS_SIZE)) {
int len, pid = TsPid(Data);
if (pid == m_VideoPid) {
++m_VideoPacketCount;
len = m_VideoBuffer.Put(Data, Length);
if (len != Length) {
m_VideoBuffer.ReportOverflow(Length - len);
m_VideoBuffer.Clear();
}
}
else if (pid == m_AudioPid) {
++m_AudioPacketCount;
len = m_AudioBuffer.Put(Data, Length);
if (len != Length) {
m_AudioBuffer.ReportOverflow(Length - len);
m_AudioBuffer.Clear();
}
}
else if (pid == m_AC3Pid) {
++m_AC3PacketCount;
len = m_AC3Buffer.Put(Data, Length);
if (len != Length) {
m_AC3Buffer.ReportOverflow(Length - len);
m_AC3Buffer.Clear();
}
}
}
}
void cFemonReceiver::Action(void)
{
debug("%s()\n", __PRETTY_FUNCTION__);
cTimeMs calcPeriod(0);
m_Active = true;
while (Running() && m_Active) {
uint8_t *Data;
double timeout;
int len, Length;
bool processed = false;
// process available video data
while ((Data = m_VideoBuffer.Get(Length))) {
if (!m_Active || (Length < TS_SIZE))
break;
Length = TS_SIZE;
if (*Data != TS_SYNC_BYTE) {
for (int i = 1; i < Length; ++i) {
if (Data[i] == TS_SYNC_BYTE) {
Length = i;
break;
}
}
m_VideoBuffer.Del(Length);
continue;
}
processed = true;
if (TsPayloadStart(Data)) {
while (const uint8_t *p = m_VideoAssembler.GetPes(len)) {
if (m_VideoType == 0x1B) { // MPEG4
if (m_DetectH264.processVideo(p, len)) {
m_VideoValid = true;
break;
}
}
else {
if (m_DetectMPEG.processVideo(p, len)) {
m_VideoValid = true;
break;
}
}
}
m_VideoAssembler.Reset();
}
m_VideoAssembler.PutTs(Data, Length);
m_VideoBuffer.Del(Length);
}
// process available audio data
while ((Data = m_AudioBuffer.Get(Length))) {
if (!m_Active || (Length < TS_SIZE))
break;
Length = TS_SIZE;
if (*Data != TS_SYNC_BYTE) {
for (int i = 1; i < Length; ++i) {
if (Data[i] == TS_SYNC_BYTE) {
Length = i;
break;
}
}
m_AudioBuffer.Del(Length);
continue;
}
processed = true;
if (const uint8_t *p = m_AudioAssembler.GetPes(len)) {
if (m_DetectAAC.processAudio(p, len) || m_DetectLATM.processAudio(p, len) || m_DetectMPEG.processAudio(p, len))
m_AudioValid = true;
m_AudioAssembler.Reset();
}
m_AudioAssembler.PutTs(Data, Length);
m_AudioBuffer.Del(Length);
}
// process available dolby data
while ((Data = m_AC3Buffer.Get(Length))) {
if (!m_Active || (Length < TS_SIZE))
break;
Length = TS_SIZE;
if (*Data != TS_SYNC_BYTE) {
for (int i = 1; i < Length; ++i) {
if (Data[i] == TS_SYNC_BYTE) {
Length = i;
break;
}
}
m_AC3Buffer.Del(Length);
continue;
}
processed = true;
if (const uint8_t *p = m_AC3Assembler.GetPes(len)) {
if (m_DetectAC3.processAudio(p, len))
m_AC3Valid = true;
m_AC3Assembler.Reset();
}
m_AC3Assembler.PutTs(Data, Length);
m_AC3Buffer.Del(Length);
}
// calculate bitrates
timeout = double(calcPeriod.Elapsed());
if (m_Active && (timeout >= (100.0 * femonConfig.calcinterval))) {
// TS packet 188 bytes - 4 byte header; MPEG standard defines 1Mbit = 1000000bit
// PES headers should be compensated!
m_VideoBitrate = (1000.0 * 8.0 * 184.0 * m_VideoPacketCount) / timeout;
m_VideoPacketCount = 0;
m_AudioBitrate = (1000.0 * 8.0 * 184.0 * m_AudioPacketCount) / timeout;
m_AudioPacketCount = 0;
m_AC3Bitrate = (1000.0 * 8.0 * 184.0 * m_AC3PacketCount) / timeout;
m_AC3PacketCount = 0;
calcPeriod.Set(0);
}
if (!processed)
m_Sleep.Wait(10); // to avoid busy loop and reduce cpu load
}
}
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