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More changes from Reinhard Nissl

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This commit is contained in:
Klaus Schmidinger
2005-08-28 11:23:23 +02:00
parent 94c74762ab
commit 62aa0902b0
1 changed files with 100 additions and 96 deletions
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186
remux.c
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@@ -11,7 +11,7 @@
* The cDolbyRepacker code was originally written by Reinhard Nissl <rnissl@gmx.de>, * The cDolbyRepacker code was originally written by Reinhard Nissl <rnissl@gmx.de>,
* and adapted to the VDR coding style by Klaus.Schmidinger@cadsoft.de. * and adapted to the VDR coding style by Klaus.Schmidinger@cadsoft.de.
* *
* $Id: remux.c 1.40 2005/08/27 09:03:56 kls Exp $ * $Id: remux.c 1.41 2005/08/28 11:23:23 kls Exp $
*/ */
#include "remux.h" #include "remux.h"
@@ -90,14 +90,15 @@ ePesHeader AnalyzePesHeader(const uchar *Data, int Count, int &PesPayloadOffset,
class cRepacker { class cRepacker {
protected: protected:
bool initiallySyncing;
int maxPacketSize; int maxPacketSize;
uint8_t subStreamId; uint8_t subStreamId;
static void DroppedData(const char *Reason, int Count) { esyslog("%s (dropped %d bytes)", Reason, Count); } static void DroppedData(const char *Reason, int Count) { esyslog("%s (dropped %d bytes)", Reason, Count); }
public: public:
static int Put(cRingBufferLinear *ResultBuffer, const uchar *Data, int Count, int CapacityNeeded); static int Put(cRingBufferLinear *ResultBuffer, const uchar *Data, int Count, int CapacityNeeded);
cRepacker(void) { maxPacketSize = 6 + 65535; subStreamId = 0; } cRepacker(void) { initiallySyncing = true; maxPacketSize = 6 + 65535; subStreamId = 0; }
virtual ~cRepacker() {} virtual ~cRepacker() {}
virtual void Reset(void) {} virtual void Reset(void) { /* initiallySyncing = true; */ }
virtual void Repack(cRingBufferLinear *ResultBuffer, const uchar *Data, int Count) = 0; virtual void Repack(cRingBufferLinear *ResultBuffer, const uchar *Data, int Count) = 0;
virtual int BreakAt(const uchar *Data, int Count) = 0; virtual int BreakAt(const uchar *Data, int Count) = 0;
virtual int QuerySnoopSize(void) { return 0; } virtual int QuerySnoopSize(void) { return 0; }
@@ -139,6 +140,7 @@ protected:
void cCommonRepacker::Reset(void) void cCommonRepacker::Reset(void)
{ {
cRepacker::Reset();
skippedBytes = 0; skippedBytes = 0;
packetTodo = maxPacketSize - 6 - 3; packetTodo = maxPacketSize - 6 - 3;
fragmentLen = 0; fragmentLen = 0;
@@ -293,16 +295,14 @@ void cVideoRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
// the byte count get's negative then the current buffer ends in a // the byte count get's negative then the current buffer ends in a
// partitial start code that must be stripped off, as it shall be put // partitial start code that must be stripped off, as it shall be put
// in the next packet. // in the next packet.
if (!PushOutPacket(ResultBuffer, payload, data - 3 - payload)) { PushOutPacket(ResultBuffer, payload, data - 3 - payload);
DroppedData("cVideoRepacker: result buffer overflow", Count - (done - 3));
return;
}
// go on with syncing to the next picture // go on with syncing to the next picture
state = syncing; state = syncing;
} }
if (state == syncing) { if (state == syncing) {
// report that syncing dropped some bytes if (initiallySyncing) // omit report for the typical initial case
if (skippedBytes > SkippedBytesLimit) initiallySyncing = false;
else if (skippedBytes > SkippedBytesLimit) // report that syncing dropped some bytes
esyslog("cVideoRepacker: skipped %d bytes to sync on next picture", skippedBytes - SkippedBytesLimit); esyslog("cVideoRepacker: skipped %d bytes to sync on next picture", skippedBytes - SkippedBytesLimit);
skippedBytes = 0; skippedBytes = 0;
// if there is a PES header available, then use it ... // if there is a PES header available, then use it ...
@@ -408,10 +408,7 @@ void cVideoRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
const uchar *excessData = fragmentData + fragmentLen + bite; const uchar *excessData = fragmentData + fragmentLen + bite;
// a negative byte count means to drop some bytes from the current // a negative byte count means to drop some bytes from the current
// fragment's tail, to not exceed the maximum packet size. // fragment's tail, to not exceed the maximum packet size.
if (!PushOutPacket(ResultBuffer, payload, bite)) { PushOutPacket(ResultBuffer, payload, bite);
DroppedData("cVideoRepacker: result buffer overflow", Count - done);
return;
}
// create a continuation PES header // create a continuation PES header
pesHeaderLen = 0; pesHeaderLen = 0;
pesHeader[pesHeaderLen++] = 0x00; pesHeader[pesHeaderLen++] = 0x00;
@@ -463,6 +460,7 @@ void cVideoRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
} }
// report that syncing dropped some bytes // report that syncing dropped some bytes
if (skippedBytes > SkippedBytesLimit) { if (skippedBytes > SkippedBytesLimit) {
if (!initiallySyncing) // omit report for the typical initial case
esyslog("cVideoRepacker: skipped %d bytes while syncing on next picture", skippedBytes - SkippedBytesLimit); esyslog("cVideoRepacker: skipped %d bytes while syncing on next picture", skippedBytes - SkippedBytesLimit);
skippedBytes = SkippedBytesLimit; skippedBytes = SkippedBytesLimit;
} }
@@ -508,14 +506,14 @@ int cVideoRepacker::BreakAt(const uchar *Data, int Count)
class cAudioRepacker : public cCommonRepacker { class cAudioRepacker : public cCommonRepacker {
private: private:
static int bitRates[]; static int bitRates[2][3][16];
enum eState { enum eState {
syncing, syncing,
scanFrame scanFrame
} state; } state;
int frameTodo; int frameTodo;
int frameSize; int frameSize;
bool IsValidAudioHeader(uint32_t Header, int *FrameSize = NULL); static bool IsValidAudioHeader(uint32_t Header, bool Mpeg2, int *FrameSize = NULL);
public: public:
cAudioRepacker(void); cAudioRepacker(void);
virtual void Reset(void); virtual void Reset(void);
@@ -523,13 +521,19 @@ public:
virtual int BreakAt(const uchar *Data, int Count); virtual int BreakAt(const uchar *Data, int Count);
}; };
int cAudioRepacker::bitRates[] = { // all values are specified as kbits/s int cAudioRepacker::bitRates[2][3][16] = { // all values are specified as kbits/s
// Layer I // MPEG 1, Layer I
0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, -1, 0, 32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, -1,
// Layer II // MPEG 1, Layer II
0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, -1, 0, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, -1,
// Layer III // MPEG 1, Layer III
0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, -1 0, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, -1,
// MPEG 2, Layer I
0, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, -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
0, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, -1
}; };
cAudioRepacker::cAudioRepacker(void) cAudioRepacker::cAudioRepacker(void)
@@ -546,7 +550,7 @@ void cAudioRepacker::Reset(void)
frameSize = 0; frameSize = 0;
} }
bool cAudioRepacker::IsValidAudioHeader(uint32_t Header, int *FrameSize) bool cAudioRepacker::IsValidAudioHeader(uint32_t Header, bool Mpeg2, int *FrameSize)
{ {
int syncword = (Header & 0xFFF00000) >> 20; int syncword = (Header & 0xFFF00000) >> 20;
int id = (Header & 0x00080000) >> 19; int id = (Header & 0x00080000) >> 19;
@@ -565,7 +569,7 @@ bool cAudioRepacker::IsValidAudioHeader(uint32_t Header, int *FrameSize)
if (syncword != 0xFFF) if (syncword != 0xFFF)
return false; return false;
if (id == 0) // reserved if (id == 0 && !Mpeg2) // reserved in MPEG 1
return false; return false;
if (layer == 0) // reserved if (layer == 0) // reserved
@@ -584,16 +588,32 @@ bool cAudioRepacker::IsValidAudioHeader(uint32_t Header, int *FrameSize)
if (bitrate_index == 0) if (bitrate_index == 0)
*FrameSize = 0; *FrameSize = 0;
else { else {
static int samplingFrequencies[] = { 44100, 48000, 32000 }; // Hz static int samplingFrequencies[2][4] = { // all values are specified in Hz
// MPEG 1
44100, 48000, 32000, -1,
// MPEG 2
22050, 24000, 16000, -1
};
int br = 1000 * bitRates[ (3 - layer) * 0x10 + bitrate_index ]; // bits/s static int slots_per_frame[2][3] = {
int sf = samplingFrequencies[sampling_frequency]; // MPEG 1, Layer I, II, III
12, 144, 144,
// MPEG 2, Layer I, II, III
12, 144, 72
};
bool layerI = (layer == 3); int mpegIndex = 1 - id;
int layerIndex = 3 - layer;
int N = (layerI ? 12 : 144) * br / sf; // slots // Layer I (i. e., layerIndex == 0) has a larger slot size
int slotSize = (layerIndex == 0) ? 4 : 1; // bytes
*FrameSize = (N + padding_bit) * (layerI ? 4 : 1); // bytes int br = 1000 * bitRates[mpegIndex][layerIndex][bitrate_index]; // bits/s
int sf = samplingFrequencies[mpegIndex][sampling_frequency];
int N = slots_per_frame[mpegIndex][layerIndex] * br / sf; // slots
*FrameSize = (N + padding_bit) * slotSize; // bytes
} }
} }
@@ -632,29 +652,35 @@ void cAudioRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
// collect number of skipped bytes while syncing // collect number of skipped bytes while syncing
if (state <= syncing) if (state <= syncing)
skippedBytes++; skippedBytes++;
else if (frameTodo > 0) else if (frameTodo > 0) {
frameTodo--; frameTodo--;
if (frameTodo == 0 && state == scanFrame) {
// the current audio frame is is done now. So push out the packet to
// start a new packet for the next audio frame.
PushOutPacket(ResultBuffer, payload, data - payload);
// go on with syncing to the next audio frame
state = syncing;
}
}
// did we reach an audio frame header? // did we reach an audio frame header?
scanner <<= 8; scanner <<= 8;
scanner |= *data; scanner |= *data;
if ((scanner & 0xFFF00000) == 0xFFF00000) { if ((scanner & 0xFFF00000) == 0xFFF00000) {
if (frameTodo <= 0 && IsValidAudioHeader(scanner, &frameSize)) { if (frameTodo <= 0 && IsValidAudioHeader(scanner, mpegLevel == phMPEG2, &frameSize)) {
if (state == scanFrame) { if (state == scanFrame) {
// As a new audio frame starts here, the previous one is done. So push // As a new audio frame starts here, the previous one is done. So push
// out the packet to start a new packet for the next audio frame. If // out the packet to start a new packet for the next audio frame. If
// the byte count gets negative then the current buffer ends in a // the byte count gets negative then the current buffer ends in a
// partitial audio frame header that must be stripped off, as it shall // partitial audio frame header that must be stripped off, as it shall
// be put in the next packet. // be put in the next packet.
if (!PushOutPacket(ResultBuffer, payload, data - 3 - payload)) { PushOutPacket(ResultBuffer, payload, data - 3 - payload);
DroppedData("cAudioRepacker: result buffer overflow", Count - (done - 3));
return;
}
// go on with syncing to the next audio frame // go on with syncing to the next audio frame
state = syncing; state = syncing;
} }
if (state == syncing) { if (state == syncing) {
// report that syncing dropped some bytes if (initiallySyncing) // omit report for the typical initial case
if (skippedBytes > SkippedBytesLimit) initiallySyncing = false;
else if (skippedBytes > SkippedBytesLimit) // report that syncing dropped some bytes
esyslog("cAudioRepacker: skipped %d bytes to sync on next audio frame", skippedBytes - SkippedBytesLimit); esyslog("cAudioRepacker: skipped %d bytes to sync on next audio frame", skippedBytes - SkippedBytesLimit);
skippedBytes = 0; skippedBytes = 0;
// if there is a PES header available, then use it ... // if there is a PES header available, then use it ...
@@ -693,11 +719,10 @@ void cAudioRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
// the next packet's payload will begin with the fourth byte of // the next packet's payload will begin with the fourth byte of
// the audio frame header (= the actual byte) // the audio frame header (= the actual byte)
payload = data; payload = data;
// as there is no length information available, assume the
// maximum we can hold in one PES packet // maximum we can hold in one PES packet
packetTodo = maxPacketSize - pesHeaderLen; packetTodo = maxPacketSize - pesHeaderLen;
// setup expected audio frame size to omit false audio header detection // expected remainder of audio frame: so far we have read 3 bytes from the frame header
frameTodo = frameSize; frameTodo = frameSize - 3;
// go on with collecting the frame's data // go on with collecting the frame's data
((int &)state)++; ((int &)state)++;
} }
@@ -751,10 +776,7 @@ void cAudioRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
const uchar *excessData = fragmentData + fragmentLen + bite; const uchar *excessData = fragmentData + fragmentLen + bite;
// A negative byte count means to drop some bytes from the current // A negative byte count means to drop some bytes from the current
// fragment's tail, to not exceed the maximum packet size. // fragment's tail, to not exceed the maximum packet size.
if (!PushOutPacket(ResultBuffer, payload, bite)) { PushOutPacket(ResultBuffer, payload, bite);
DroppedData("cAudioRepacker: result buffer overflow", Count - done);
return;
}
// create a continuation PES header // create a continuation PES header
pesHeaderLen = 0; pesHeaderLen = 0;
pesHeader[pesHeaderLen++] = 0x00; pesHeader[pesHeaderLen++] = 0x00;
@@ -806,6 +828,7 @@ void cAudioRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
} }
// report that syncing dropped some bytes // report that syncing dropped some bytes
if (skippedBytes > SkippedBytesLimit) { if (skippedBytes > SkippedBytesLimit) {
if (!initiallySyncing) // omit report for the typical initial case
esyslog("cAudioRepacker: skipped %d bytes while syncing on next audio frame", skippedBytes - SkippedBytesLimit); esyslog("cAudioRepacker: skipped %d bytes while syncing on next audio frame", skippedBytes - SkippedBytesLimit);
skippedBytes = SkippedBytesLimit; skippedBytes = SkippedBytesLimit;
} }
@@ -815,7 +838,8 @@ int cAudioRepacker::BreakAt(const uchar *Data, int Count)
{ {
int PesPayloadOffset = 0; int PesPayloadOffset = 0;
if (AnalyzePesHeader(Data, Count, PesPayloadOffset) <= phInvalid) ePesHeader MpegLevel = AnalyzePesHeader(Data, Count, PesPayloadOffset);
if (MpegLevel <= phInvalid)
return -1; // not enough data for test return -1; // not enough data for test
// determine amount of data to fill up packet and to append next audio frame header // determine amount of data to fill up packet and to append next audio frame header
@@ -845,7 +869,7 @@ int cAudioRepacker::BreakAt(const uchar *Data, int Count)
localScanner <<= 8; localScanner <<= 8;
localScanner |= *data++; localScanner |= *data++;
// check whether the next audio frame follows // check whether the next audio frame follows
if ((localScanner & 0xFFF00000) == 0xFFF00000 && IsValidAudioHeader(localScanner)) if (((localScanner & 0xFFF00000) == 0xFFF00000) && IsValidAudioHeader(localScanner, MpegLevel == phMPEG2))
return data - Data; return data - Data;
} }
} }
@@ -879,8 +903,8 @@ private:
int skippedBytes; int skippedBytes;
void ResetPesHeader(bool ContinuationFrame = false); void ResetPesHeader(bool ContinuationFrame = false);
void AppendSubStreamID(bool ContinuationFrame = false); void AppendSubStreamID(bool ContinuationFrame = false);
bool FinishRemainder(cRingBufferLinear *ResultBuffer, const uchar *const Data, const int Todo, int &Done, int &Bite); bool FinishRemainder(cRingBufferLinear *ResultBuffer, const uchar *const Data, const int Todo, int &Bite);
bool StartNewPacket(cRingBufferLinear *ResultBuffer, const uchar *const Data, const int Todo, int &Done, int &Bite); bool StartNewPacket(cRingBufferLinear *ResultBuffer, const uchar *const Data, const int Todo, int &Bite);
public: public:
cDolbyRepacker(void); cDolbyRepacker(void);
virtual void Reset(void); virtual void Reset(void);
@@ -947,6 +971,7 @@ void cDolbyRepacker::ResetPesHeader(bool ContinuationFrame)
void cDolbyRepacker::Reset(void) void cDolbyRepacker::Reset(void)
{ {
cRepacker::Reset();
ResetPesHeader(); ResetPesHeader();
state = find_0b; state = find_0b;
ac3todo = 0; ac3todo = 0;
@@ -958,26 +983,24 @@ void cDolbyRepacker::Reset(void)
skippedBytes = 0; skippedBytes = 0;
} }
bool cDolbyRepacker::FinishRemainder(cRingBufferLinear *ResultBuffer, const uchar *const Data, const int Todo, int &Done, int &Bite) bool cDolbyRepacker::FinishRemainder(cRingBufferLinear *ResultBuffer, const uchar *const Data, const int Todo, int &Bite)
{ {
bool success = true;
// enough data available to put PES packet into buffer? // enough data available to put PES packet into buffer?
if (fragmentTodo <= Todo) { if (fragmentTodo <= Todo) {
// output a previous fragment first // output a previous fragment first
if (fragmentLen > 0) { if (fragmentLen > 0) {
Bite = fragmentLen; Bite = fragmentLen;
int n = Put(ResultBuffer, fragmentData, Bite, fragmentLen + fragmentTodo); int n = Put(ResultBuffer, fragmentData, Bite, fragmentLen + fragmentTodo);
if (Bite != n) { if (Bite != n)
Reset(); success = false;
return false;
}
fragmentLen = 0; fragmentLen = 0;
} }
Bite = fragmentTodo; Bite = fragmentTodo;
if (success) {
int n = Put(ResultBuffer, Data, Bite, Bite); int n = Put(ResultBuffer, Data, Bite, Bite);
if (Bite != n) { if (Bite != n)
Reset(); success = false;
Done += n;
return false;
} }
fragmentTodo = 0; fragmentTodo = 0;
// ac3 frame completely processed? // ac3 frame completely processed?
@@ -987,19 +1010,16 @@ bool cDolbyRepacker::FinishRemainder(cRingBufferLinear *ResultBuffer, const ucha
else { else {
// copy the fragment into separate buffer for later processing // copy the fragment into separate buffer for later processing
Bite = Todo; Bite = Todo;
if (fragmentLen + Bite > (int)sizeof(fragmentData)) {
Reset();
return false;
}
memcpy(fragmentData + fragmentLen, Data, Bite); memcpy(fragmentData + fragmentLen, Data, Bite);
fragmentLen += Bite; fragmentLen += Bite;
fragmentTodo -= Bite; fragmentTodo -= Bite;
} }
return true; return success;
} }
bool cDolbyRepacker::StartNewPacket(cRingBufferLinear *ResultBuffer, const uchar *const Data, const int Todo, int &Done, int &Bite) bool cDolbyRepacker::StartNewPacket(cRingBufferLinear *ResultBuffer, const uchar *const Data, const int Todo, int &Bite)
{ {
bool success = true;
int packetLen = pesHeaderLen + ac3todo; int packetLen = pesHeaderLen + ac3todo;
// limit packet to maximum size // limit packet to maximum size
if (packetLen > maxPacketSize) if (packetLen > maxPacketSize)
@@ -1010,16 +1030,13 @@ bool cDolbyRepacker::StartNewPacket(cRingBufferLinear *ResultBuffer, const uchar
// enough data available to put PES packet into buffer? // enough data available to put PES packet into buffer?
if (packetLen - pesHeaderLen <= Todo) { if (packetLen - pesHeaderLen <= Todo) {
int n = Put(ResultBuffer, pesHeader, Bite, packetLen); int n = Put(ResultBuffer, pesHeader, Bite, packetLen);
if (Bite != n) { if (Bite != n)
Reset(); success = false;
return false;
}
Bite = packetLen - pesHeaderLen; Bite = packetLen - pesHeaderLen;
if (success) {
n = Put(ResultBuffer, Data, Bite, Bite); n = Put(ResultBuffer, Data, Bite, Bite);
if (Bite != n) { if (Bite != n)
Reset(); success = false;
Done += n;
return false;
} }
// ac3 frame completely processed? // ac3 frame completely processed?
if (Bite >= ac3todo) if (Bite >= ac3todo)
@@ -1028,24 +1045,16 @@ bool cDolbyRepacker::StartNewPacket(cRingBufferLinear *ResultBuffer, const uchar
else { else {
fragmentTodo = packetLen; fragmentTodo = packetLen;
// copy the pesheader into separate buffer for later processing // copy the pesheader into separate buffer for later processing
if (fragmentLen + Bite > (int)sizeof(fragmentData)) {
Reset();
return false;
}
memcpy(fragmentData + fragmentLen, pesHeader, Bite); memcpy(fragmentData + fragmentLen, pesHeader, Bite);
fragmentLen += Bite; fragmentLen += Bite;
fragmentTodo -= Bite; fragmentTodo -= Bite;
// copy the fragment into separate buffer for later processing // copy the fragment into separate buffer for later processing
Bite = Todo; Bite = Todo;
if (fragmentLen + Bite > (int)sizeof(fragmentData)) {
Reset();
return false;
}
memcpy(fragmentData + fragmentLen, Data, Bite); memcpy(fragmentData + fragmentLen, Data, Bite);
fragmentLen += Bite; fragmentLen += Bite;
fragmentTodo -= Bite; fragmentTodo -= Bite;
} }
return true; return success;
} }
void cDolbyRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data, int Count) void cDolbyRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data, int Count)
@@ -1139,8 +1148,9 @@ void cDolbyRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
state = find_0b; state = find_0b;
continue; continue;
} }
// report that syncing dropped some bytes if (initiallySyncing) // omit report for the typical initial case
if (skippedBytes > SkippedBytesLimit) initiallySyncing = false;
else if (skippedBytes > SkippedBytesLimit) // report that syncing dropped some bytes
esyslog("cDolbyRepacker: skipped %d bytes to sync on next AC3 frame", skippedBytes - SkippedBytesLimit); esyslog("cDolbyRepacker: skipped %d bytes to sync on next AC3 frame", skippedBytes - SkippedBytesLimit);
skippedBytes = 0; skippedBytes = 0;
// append read data to header for common output processing // append read data to header for common output processing
@@ -1154,18 +1164,11 @@ void cDolbyRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
case output_packet: { case output_packet: {
int bite = 0; int bite = 0;
// finish remainder of ac3 frame? // finish remainder of ac3 frame?
if (fragmentTodo > 0) { if (fragmentTodo > 0)
if (!FinishRemainder(ResultBuffer, data, todo, done, bite)) { FinishRemainder(ResultBuffer, data, todo, bite);
DroppedData("cDolbyRepacker: result buffer overflow", Count - done);
return;
}
}
else { else {
// start a new packet // start a new packet
if (!StartNewPacket(ResultBuffer, data, todo, done, bite)) { StartNewPacket(ResultBuffer, data, todo, bite);
DroppedData("cDolbyRepacker: result buffer overflow", Count - done);
return;
}
// prepare for next (continuation) packet // prepare for next (continuation) packet
ResetPesHeader(state == output_packet); ResetPesHeader(state == output_packet);
} }
@@ -1178,6 +1181,7 @@ void cDolbyRepacker::Repack(cRingBufferLinear *ResultBuffer, const uchar *Data,
} }
// report that syncing dropped some bytes // report that syncing dropped some bytes
if (skippedBytes > SkippedBytesLimit) { if (skippedBytes > SkippedBytesLimit) {
if (!initiallySyncing) // omit report for the typical initial case
esyslog("cDolbyRepacker: skipped %d bytes while syncing on next AC3 frame", skippedBytes - 4); esyslog("cDolbyRepacker: skipped %d bytes while syncing on next AC3 frame", skippedBytes - 4);
skippedBytes = SkippedBytesLimit; skippedBytes = SkippedBytesLimit;
} }