Added preliminary support for LATM.

2023-10-10 13:36:53 +02:00 · 2010-06-23 12:16:17 +03:00 · 2010-06-23 12:16:17 +03:00 · f37f428670
commit f37f428670
parent 3235c67256
18 changed files with 213 additions and 39 deletions
--- a/3
+++ b/3
@ -396,8 +396,9 @@ VDR Plugin 'femon' Revision History
 - Added a setup option to downscale the OSD size.
 - Updated Estonian translation (Thanks to Arthur Konovalov).

-2010-xx-xx: Version 1.7.8
+2010-06-23: Version 1.7.8

 - Fixed device switching.
+- Added preliminary support for LATM.
 - Updated Italian translation (Thanks to Diego Pierotto).
 - Fixed a crash in femon service (Thanks to Wolfgang Astleitner).
--- a/4
+++ b/4
@ -63,7 +63,7 @@ all-redirect: all

 ### The object files (add further files here):

-OBJS = femon.o femonosd.o femonreceiver.o femoncfg.o femontools.o femonmpeg.o femonac3.o femonaac.o femonh264.o femonsymbol.o
+OBJS = femon.o femonosd.o femonreceiver.o femoncfg.o femontools.o femonmpeg.o femonac3.o femonaac.o femonlatm.o femonh264.o femonsymbol.o

 ### The main target:

@ -95,7 +95,7 @@ I18Npot   = $(PODIR)/$(PLUGIN).pot
 	msgfmt -c -o $@ $<

 $(I18Npot): $(wildcard *.c)
-	xgettext -C -cTRANSLATORS --no-wrap --no-location -k -ktr -ktrNOOP --msgid-bugs-address='Rolf Ahrenberg' -o $@ $^
+	xgettext -C -cTRANSLATORS --no-wrap --no-location -k -ktr -ktrNOOP --msgid-bugs-address='<see README>' -o $@ $^

 %.po: $(I18Npot)
 	msgmerge -U --no-wrap --no-location --backup=none -q $@ $<
--- a/femonaudio.h
+++ b/femonaudio.h
@ -17,7 +17,8 @@ enum eAudioCodec {
  AUDIO_CODEC_MPEG2_I,
  AUDIO_CODEC_MPEG2_II,
  AUDIO_CODEC_MPEG2_III,
-  AUDIO_CODEC_HEAAC
+  AUDIO_CODEC_HEAAC,
+  AUDIO_CODEC_LATM
  };

 enum eAudioChannelMode {
--- a/femonlatm.c
+++ b/femonlatm.c
@ -0,0 +1,112 @@
+/*
+ * Frontend Status Monitor plugin for the Video Disk Recorder
+ *
+ * See the README file for copyright information and how to reach the author.
+ *
+ */
+
+#include "femontools.h"
+#include "femonlatm.h"
+
+unsigned int cFemonLATM::s_Bitrates[3][16] =
+{
+  {0,  32,  48,  56,  64,  80,  96, 112, 128, 144, 160, 176, 192, 224, 256, -1}, // MPEG-2 Layer I
+  {0,   8,  16,  24,  32,  40,  48,  56,  64,  80,  96, 112, 128, 144, 160, -1}, // MPEG-2 Layer II/III
+  {0,   8,  16,  24,  32,  40,  48,  56,  64,  80,  96, 112, 128, 144, 160, -1}  // MPEG-2 Layer II/III
+};
+
+unsigned int cFemonLATM::s_Samplerates[4] =
+{
+  22050, 24000, 16000, -1
+};
+
+cFemonLATM::cFemonLATM(cFemonAudioIf *audiohandler)
+: m_AudioHandler(audiohandler)
+{
+}
+
+cFemonLATM::~cFemonLATM()
+{
+}
+
+bool cFemonLATM::processAudio(const uint8_t *buf, int len)
+{
+  cBitStream bs(buf, len * 8);
+
+  if (!m_AudioHandler)
+     return false;
+
+  // skip PES header
+  if (!PesLongEnough(len))
+      return false;
+  bs.skipBits(8 * PesPayloadOffset(buf));
+
+  // MPEG audio detection
+  if (bs.getBits(12) != 0x56E)              // syncword
+     return false;
+
+  if (bs.getBit() == 1)                     // id: MPEG-1=1, extension to lower sampling frequences=0
+     return false;
+  int layer = 3 - bs.getBits(2);            // layer: I=11, II=10, III=01
+  bs.skipBit();                             // protection bit
+  int bit_rate_index = bs.getBits(4);       // bitrate index
+  int sampling_frequency = bs.getBits(2);   // sampling frequency
+  bs.skipBit();                             // padding bit
+  bs.skipBit();                             // private pid
+  int mode = bs.getBits(2);                 // mode
+
+  m_AudioHandler->SetAudioCodec(AUDIO_CODEC_LATM);
+
+  switch (mode) {
+    case 0:
+         m_AudioHandler->SetAudioChannel(AUDIO_CHANNEL_MODE_STEREO);
+         break;
+
+    case 1:
+         m_AudioHandler->SetAudioChannel(AUDIO_CHANNEL_MODE_JOINT_STEREO);
+         break;
+
+    case 2:
+         m_AudioHandler->SetAudioChannel(AUDIO_CHANNEL_MODE_DUAL);
+         break;
+
+    case 3:
+         m_AudioHandler->SetAudioChannel(AUDIO_CHANNEL_MODE_SINGLE);
+         break;
+
+    default:
+         m_AudioHandler->SetAudioChannel(AUDIO_CHANNEL_MODE_INVALID);
+         break;
+  }
+
+  if (layer == 3) {
+      m_AudioHandler->SetAudioBitrate(AUDIO_BITRATE_FREE);
+  }
+  else {
+     switch (bit_rate_index) {
+       case 0:
+            m_AudioHandler->SetAudioBitrate(AUDIO_BITRATE_FREE);
+            break;
+
+       case 0xF:
+            m_AudioHandler->SetAudioBitrate(AUDIO_BITRATE_RESERVED);
+            break;
+
+       default:
+            m_AudioHandler->SetAudioBitrate(1000 * s_Bitrates[layer][bit_rate_index]);
+            break;
+     }
+  }
+
+  switch (sampling_frequency) {
+    case 3:
+         m_AudioHandler->SetAudioSamplingFrequency(AUDIO_SAMPLING_FREQUENCY_RESERVED);
+         break;
+
+    default:
+         m_AudioHandler->SetAudioSamplingFrequency(s_Samplerates[sampling_frequency]);
+         break;
+  }
+
+  return true;
+}
--- a/femonlatm.h
+++ b/femonlatm.h
@ -0,0 +1,27 @@
+/*
+ * Frontend Status Monitor plugin for the Video Disk Recorder
+ *
+ * See the README file for copyright information and how to reach the author.
+ *
+ */
+
+#ifndef __FEMONLATM_H
+#define __FEMONLATM_H
+
+#include "femonaudio.h"
+
+class cFemonLATM {
+private:
+  cFemonAudioIf *m_AudioHandler;
+
+  static unsigned int s_Bitrates[3][16];
+  static unsigned int s_Samplerates[4];
+
+public:
+  cFemonLATM(cFemonAudioIf *audiohandler);
+  virtual ~cFemonLATM();
+
+  bool processAudio(const uint8_t *buf, int len);
+  };
+
+#endif //__FEMONLATM_H
--- a/femonreceiver.c
+++ b/femonreceiver.c
@ -18,6 +18,7 @@ cFemonReceiver::cFemonReceiver(int Vtype, int Vpid, int Apid, int Dpid)
  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(Vtype),
@ -144,7 +145,7 @@ void cFemonReceiver::Action(void)
    while (Data = m_VideoBuffer.Get(Length)) {
      if (!m_Active || (Length < TS_SIZE))
         break;
-      Length = TS_SIZE;      
+      Length = TS_SIZE;
      if (*Data != TS_SYNC_BYTE) {
         for (int i = 1; i < Length; ++i) {
             if (Data[i] == TS_SYNC_BYTE) {
@ -181,7 +182,7 @@ void cFemonReceiver::Action(void)
    while (Data = m_AudioBuffer.Get(Length)) {
      if (!m_Active || (Length < TS_SIZE))
         break;
-      Length = TS_SIZE;      
+      Length = TS_SIZE;
      if (*Data != TS_SYNC_BYTE) {
         for (int i = 1; i < Length; ++i) {
             if (Data[i] == TS_SYNC_BYTE) {
@ -194,7 +195,7 @@ void cFemonReceiver::Action(void)
         }
      processed = true;
      if (const uint8_t *p = m_AudioAssembler.GetPes(len)) {
-         if (m_DetectAAC.processAudio(p, len) || m_DetectMPEG.processAudio(p, len))
+         if (m_DetectAAC.processAudio(p, len) || m_DetectLATM.processAudio(p, len) || m_DetectMPEG.processAudio(p, len))
            m_AudioValid = true;
         m_AudioAssembler.Reset();
         }
@ -206,7 +207,7 @@ void cFemonReceiver::Action(void)
    while (Data = m_AC3Buffer.Get(Length)) {
      if (!m_Active || (Length < TS_SIZE))
         break;
-      Length = TS_SIZE;      
+      Length = TS_SIZE;
      if (*Data != TS_SYNC_BYTE) {
         for (int i = 1; i < Length; ++i) {
             if (Data[i] == TS_SYNC_BYTE) {
--- a/femonreceiver.h
+++ b/femonreceiver.h
@ -14,6 +14,7 @@
 #include "femonh264.h"
 #include "femonmpeg.h"
 #include "femonaac.h"
+#include "femonlatm.h"
 #include "femonac3.h"
 #include "femonaudio.h"
 #include "femonvideo.h"
@ -28,6 +29,7 @@ private:
  cFemonH264        m_DetectH264;
  cFemonMPEG        m_DetectMPEG;
  cFemonAAC         m_DetectAAC;
+  cFemonLATM        m_DetectLATM;
  cFemonAC3         m_DetectAC3;

  cRingBufferLinear m_VideoBuffer;
--- a/femontools.c
+++ b/femontools.c
@ -294,6 +294,7 @@ cString getAudioCodec(int value)
    case AUDIO_CODEC_MPEG2_II:  return cString::sprintf("%s", tr("MPEG-2 Layer II"));
    case AUDIO_CODEC_MPEG2_III: return cString::sprintf("%s", tr("MPEG-2 Layer III"));
    case AUDIO_CODEC_HEAAC:     return cString::sprintf("%s", tr("HE-AAC"));
+    case AUDIO_CODEC_LATM:      return cString::sprintf("%s", tr("LATM"));
    default:                    break;
    }
  return cString::sprintf("---");
--- a/po/de_DE.po
+++ b/po/de_DE.po
@ -7,9 +7,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2007-08-12 23:22+0300\n"
 "Last-Translator: Christian Wieninger\n"
 "Language-Team: <vdr@linuxtv.org>\n"
@ -266,6 +266,9 @@ msgstr ""
 msgid "HE-AAC"
 msgstr ""

+msgid "LATM"
+msgstr ""
+
 msgid "stereo"
 msgstr ""

--- a/po/es_ES.po
+++ b/po/es_ES.po
@ -5,9 +5,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2007-08-12 23:22+0300\n"
 "Last-Translator: Luis Palacios\n"
 "Language-Team: <vdr@linuxtv.org>\n"
@ -264,6 +264,9 @@ msgstr ""
 msgid "HE-AAC"
 msgstr ""

+msgid "LATM"
+msgstr ""
+
 msgid "stereo"
 msgstr ""

--- a/po/et_EE.po
+++ b/po/et_EE.po
@ -5,9 +5,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2007-08-12 23:22+0300\n"
 "Last-Translator: Arthur Konovalov\n"
 "Language-Team: <vdr@linuxtv.org>\n"
@ -264,6 +264,9 @@ msgstr "MPEG-2 Layer III"
 msgid "HE-AAC"
 msgstr "HE-AAC"

+msgid "LATM"
+msgstr "LATM"
+
 msgid "stereo"
 msgstr "stereo"

--- a/po/fi_FI.po
+++ b/po/fi_FI.po
@ -5,9 +5,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2007-08-12 23:22+0300\n"
 "Last-Translator: Rolf Ahrenberg\n"
 "Language-Team: <vdr@linuxtv.org>\n"
@ -264,6 +264,9 @@ msgstr "MPEG-2 kerros III"
 msgid "HE-AAC"
 msgstr "HE-AAC"

+msgid "LATM"
+msgstr "LATM"
+
 msgid "stereo"
 msgstr "stereo"

--- a/po/fr_FR.po
+++ b/po/fr_FR.po
@ -5,9 +5,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2008-01-26 09:59+0100\n"
 "Last-Translator: NIVAL Michaël <mnival@club-internet.fr>\n"
 "Language-Team:  <vdr@linuxtv.org>\n"
@ -264,6 +264,9 @@ msgstr ""
 msgid "HE-AAC"
 msgstr ""

+msgid "LATM"
+msgstr ""
+
 msgid "stereo"
 msgstr ""

--- a/po/it_IT.po
+++ b/po/it_IT.po
@ -6,9 +6,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2010-03-29 00:24+0100\n"
 "Last-Translator: Diego Pierotto <vdr-italian@tiscali.it>\n"
 "Language-Team:  <vdr@linuxtv.org>\n"
@ -268,6 +268,9 @@ msgstr "MPEG-2 Layer III"
 msgid "HE-AAC"
 msgstr "HE-AAC"

+msgid "LATM"
+msgstr "LATM"
+
 msgid "stereo"
 msgstr "stereo"

@ -381,4 +384,3 @@ msgstr "Mbit/s"

 msgid "kbit/s"
 msgstr "kbit/s"
-
--- a/po/lt_LT.po
+++ b/po/lt_LT.po
@ -5,9 +5,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2007-08-12 23:22+0300\n"
 "Last-Translator: Valdemaras Pipiras\n"
 "Language-Team: <varas@ambernet.lt>\n"
@ -264,6 +264,9 @@ msgstr "MPEG-2 Layer III"
 msgid "HE-AAC"
 msgstr "HE-AAC"

+msgid "LATM"
+msgstr "LATM"
+
 msgid "stereo"
 msgstr "stereo"

--- a/po/ru_RU.po
+++ b/po/ru_RU.po
@ -5,9 +5,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2007-08-12 23:22+0300\n"
 "Last-Translator: Vyacheslav Dikonov\n"
 "Language-Team: <vdr@linuxtv.org>\n"
@ -264,6 +264,9 @@ msgstr ""
 msgid "HE-AAC"
 msgstr ""

+msgid "LATM"
+msgstr ""
+
 msgid "stereo"
 msgstr ""

--- a/po/zh_CN.po
+++ b/po/zh_CN.po
@ -5,9 +5,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2009-09-21 21:36+0800\n"
 "Last-Translator: NanFeng <nfgx@21cn.com>\n"
 "Language-Team: <vdr@linuxtv.org>\n"
@ -264,6 +264,9 @@ msgstr "MPEG-2 Layer III"
 msgid "HE-AAC"
 msgstr "HE-AAC"

+msgid "LATM"
+msgstr "LATM"
+
 msgid "stereo"
 msgstr "立体声"

--- a/po/zh_TW.po
+++ b/po/zh_TW.po
@ -5,9 +5,9 @@
 #
 msgid ""
 msgstr ""
-"Project-Id-Version: femon 1.7.7\n"
-"Report-Msgid-Bugs-To: Rolf Ahrenberg\n"
-"POT-Creation-Date: 2010-02-25 20:31+0200\n"
+"Project-Id-Version: femon 1.7.8\n"
+"Report-Msgid-Bugs-To: <see README>\n"
+"POT-Creation-Date: 2010-06-23 12:14+0300\n"
 "PO-Revision-Date: 2009-09-21 21:36+0800\n"
 "Last-Translator: NanFeng <nfgx@21cn.com>\n"
 "Language-Team: <vdr@linuxtv.org>\n"
@ -264,6 +264,9 @@ msgstr "MPEG-2 Layer III"
 msgid "HE-AAC"
 msgstr "HE-AAC"

+msgid "LATM"
+msgstr "LATM"
+
 msgid "stereo"
 msgstr "立體聲"