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Code Issues Releases Wiki Activity

Fixed H.264 parser.

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This commit is contained in:
Rolf Ahrenberg
2009-08-28 20:54:34 +03:00
parent 167da08ab3
commit 53b42a2d4a
7 changed files with 236 additions and 79 deletions
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3
HISTORY
View File

@@ -365,7 +365,8 @@ VDR Plugin 'femon' Revision History
- Cleaned up compilation warnings.
- Fixed font handling to be thread-safe.
2009-07-xx: Version 1.7.3
2009-08-28: Version 1.7.3
- Removed OSD offset and height options.
- Added PES assembler.
- Added bitstream parsers for all codecs.

227
femonh264.c
View File

@@ -42,9 +42,23 @@ const eVideoFormat cFemonH264::s_VideoFormats[] =
VIDEO_FORMAT_RESERVED
};
const uint8_t cFemonH264::s_SeiNumClockTsTable[9] =
{
1, 1, 1, 2, 2, 3, 3, 2, 3
};
cFemonH264::cFemonH264(cFemonVideoIf *videohandler)
: m_VideoHandler(videohandler)
: m_VideoHandler(videohandler),
m_Width(0),
m_Height(0),
m_AspectRatio(VIDEO_ASPECT_RATIO_INVALID),
m_Format(VIDEO_FORMAT_INVALID),
m_FrameRate(0),
m_BitRate(0),
m_Scan(VIDEO_SCAN_INVALID),
m_CpbDpbDelaysPresentFlag(false),
m_PicStructPresentFlag(false),
m_TimeOffsetLength(0)
{
}
@@ -54,7 +68,10 @@ cFemonH264::~cFemonH264()
bool cFemonH264::processVideo(const uint8_t *buf, int len)
{
bool aud_found = false, sps_found = false, sei_found = true; // sei currently disabled
uint8_t nal_data[len];
bool aud_found = false, sps_found = false, sei_found = false;
const uint8_t *start = buf;
const uint8_t *end = start + len;
if (!m_VideoHandler)
return false;
@@ -63,10 +80,7 @@ bool cFemonH264::processVideo(const uint8_t *buf, int len)
if (!PesLongEnough(len))
return false;
buf += PesPayloadOffset(buf);
const uint8_t *start = buf;
const uint8_t *end = start + len;
uint8_t nal_data[len];
start = buf;
for (;;) {
int consumed = 0;
@@ -81,7 +95,6 @@ bool cFemonH264::processVideo(const uint8_t *buf, int len)
switch (buf[4] >> 5) {
case 0: case 3: case 5: // I_FRAME
//Dprintf("H.264: Found NAL AUD at offset %d/%d", buf - start, len);
m_VideoHandler->SetVideoCodec(VIDEO_CODEC_H264);
aud_found = true;
break;
case 1: case 4: case 6: // P_FRAME;
@@ -101,7 +114,7 @@ bool cFemonH264::processVideo(const uint8_t *buf, int len)
sps_found = true;
}
break;
#if 0
case NAL_SEI:
if (!sei_found) {
//Dprintf("H.264: Found NAL SEI at offset %d/%d", buf - start, len);
@@ -111,7 +124,7 @@ bool cFemonH264::processVideo(const uint8_t *buf, int len)
sei_found = true;
}
break;
#endif
default:
break;
}
@@ -122,6 +135,22 @@ bool cFemonH264::processVideo(const uint8_t *buf, int len)
buf += consumed + 4;
}
if (aud_found) {
m_VideoHandler->SetVideoCodec(VIDEO_CODEC_H264);
if (sps_found) {
//Dprintf("H.264 SPS: -> video size %dx%d, aspect %d format %d", m_Width, m_Height, m_AspectRatio, m_Format);
m_VideoHandler->SetVideoFormat(m_Format);
m_VideoHandler->SetVideoSize(m_Width, m_Height);
m_VideoHandler->SetVideoAspectRatio(m_AspectRatio);
}
if (sei_found) {
//Dprintf("H.264 SEI: -> stream bitrate %.1f, frame rate %.1f scan %d", m_BitRate, m_FrameRate, m_Scan);
m_VideoHandler->SetVideoFramerate(m_FrameRate);
m_VideoHandler->SetVideoBitrate(m_BitRate);
m_VideoHandler->SetVideoScan(m_Scan);
}
}
return aud_found;
}
@@ -159,11 +188,16 @@ int cFemonH264::nalUnescape(uint8_t *dst, const uint8_t *src, int len)
int cFemonH264::parseSPS(const uint8_t *buf, int len)
{
int profile_idc, pic_order_cnt_type, frame_mbs_only, i, j;
unsigned int width = 0, height = 0;
eVideoAspectRatio aspect_ratio = VIDEO_ASPECT_RATIO_INVALID;
eVideoFormat format = VIDEO_FORMAT_INVALID;
cBitStream bs(buf, len);
unsigned int width = m_Width;
unsigned int height = m_Height;
eVideoAspectRatio aspect_ratio = m_AspectRatio;
eVideoFormat format = m_Format;
bool cpb_dpb_delays_present_flag = m_CpbDpbDelaysPresentFlag;
bool pic_struct_present_flag = m_PicStructPresentFlag;
unsigned int time_offset_length = m_TimeOffsetLength;
profile_idc = bs.getU8();
//Dprintf("H.264 SPS: profile_idc %d", profile_idc);
@@ -255,21 +289,83 @@ int cFemonH264::parseSPS(const uint8_t *buf, int len)
if (bs.getBit()) // overscan_info_present_flag
bs.skipBit(); // overscan_approriate_flag
if (bs.getBit()) { // video_signal_type_present_flag
uint32_t video_format = bs.getBits(3);
uint32_t video_format;
video_format = bs.getBits(3); // video_format
if (video_format < sizeof(s_VideoFormats) / sizeof(s_VideoFormats[0])) {
format = s_VideoFormats[video_format];
//Dprintf("H.264 SPS: -> video format %d", format);
}
bs.skipBit(); // video_full_range_flag
bs.skipBit(); // video_full_range_flag
if (bs.getBit()) { // colour_description_present_flag
bs.skipBits(8); // colour_primaries
bs.skipBits(8); // transfer_characteristics
bs.skipBits(8); // matrix_coefficients
}
}
if (bs.getBit()) { // chroma_loc_info_present_flag
bs.skipUeGolomb(); // chroma_sample_loc_type_top_field
bs.skipUeGolomb(); // chroma_sample_loc_type_bottom_field
}
if (bs.getBit()) { // timing_info_present_flag
bs.skipBits(32); // num_units_in_tick
bs.skipBits(32); // time_scale
bs.skipBit(); // fixed_frame_rate_flag
}
int nal_hrd_parameters_present_flag = bs.getBit(); // nal_hrd_parameters_present_flag
if (nal_hrd_parameters_present_flag) {
int cpb_cnt_minus1;
cpb_cnt_minus1 = bs.getUeGolomb(); // cpb_cnt_minus1
bs.skipBits(4); // bit_rate_scale
bs.skipBits(4); // cpb_size_scale
for (int i = 0; i < cpb_cnt_minus1; ++i) {
bs.skipUeGolomb(); // bit_rate_value_minus1[i]
bs.skipUeGolomb(); // cpb_size_value_minus1[i]
bs.skipBit(); // cbr_flag[i]
}
bs.skipBits(5); // initial_cpb_removal_delay_length_minus1
bs.skipBits(5); // cpb_removal_delay_length_minus1
bs.skipBits(5); // dpb_output_delay_length_minus1
time_offset_length = bs.getBits(5); // time_offset_length
}
int vlc_hrd_parameters_present_flag = bs.getBit(); // vlc_hrd_parameters_present_flag
if (vlc_hrd_parameters_present_flag) {
int cpb_cnt_minus1;
cpb_cnt_minus1 = bs.getUeGolomb(); // cpb_cnt_minus1
bs.skipBits(4); // bit_rate_scale
bs.skipBits(4); // cpb_size_scale
for (int i = 0; i < cpb_cnt_minus1; ++i) {
bs.skipUeGolomb(); // bit_rate_value_minus1[i]
bs.skipUeGolomb(); // cpb_size_value_minus1[i]
bs.skipBit(); // cbr_flag[i]
}
bs.skipBits(5); // initial_cpb_removal_delay_length_minus1
bs.skipBits(5); // cpb_removal_delay_length_minus1
bs.skipBits(5); // dpb_output_delay_length_minus1
time_offset_length = bs.getBits(5); // time_offset_length
}
cpb_dpb_delays_present_flag = (nal_hrd_parameters_present_flag | vlc_hrd_parameters_present_flag);
if (cpb_dpb_delays_present_flag)
bs.skipBit(); // low_delay_hrd_flag
pic_struct_present_flag = bs.getBit(); // pic_struct_present_flag
if (bs.getBit()) { // bitstream_restriction_flag
bs.skipBit(); // motion_vectors_over_pic_boundaries_flag
bs.skipUeGolomb(); // max_bytes_per_pic_denom
bs.skipUeGolomb(); // max_bits_per_mb_denom
bs.skipUeGolomb(); // log2_max_mv_length_horizontal
bs.skipUeGolomb(); // log2_max_mv_length_vertical
bs.skipUeGolomb(); // num_reorder_frames
bs.skipUeGolomb(); // max_dec_frame_buffering
}
}
//Dprintf("H.264 SPS: -> video size %dx%d, aspect %d", width, height, aspect_ratio);
if (m_VideoHandler) {
m_VideoHandler->SetVideoFormat(format);
m_VideoHandler->SetVideoSize(width, height);
m_VideoHandler->SetVideoAspectRatio(aspect_ratio);
}
m_Width = width;
m_Height = height;
m_AspectRatio = aspect_ratio;
m_Format = format;
m_CpbDpbDelaysPresentFlag = cpb_dpb_delays_present_flag;
m_PicStructPresentFlag = pic_struct_present_flag;
m_TimeOffsetLength = time_offset_length;
return (bs.getIndex() / 8);
}
@@ -277,10 +373,12 @@ int cFemonH264::parseSPS(const uint8_t *buf, int len)
int cFemonH264::parseSEI(const uint8_t *buf, int len)
{
int num_referenced_subseqs, i;
double frame_rate = 0, bit_rate = 0;
eVideoScan scan = VIDEO_SCAN_INVALID;
cBitStream bs(buf, len);
double frame_rate = m_FrameRate;
double bit_rate = m_BitRate;
eVideoScan scan = m_Scan;
while ((bs.getIndex() * 8 + 16) < len) { // sei_message
int lastByte, payloadSize = 0, payloadType = 0;
@@ -297,23 +395,60 @@ int cFemonH264::parseSEI(const uint8_t *buf, int len)
} while (lastByte == 0xFF);
switch (payloadType) { // sei_payload
//case 1: // pic_timing
// ...
// switch (bs.getBits(2)) { // ct_type
// case 0:
// scan = VIDEO_SCAN_PROGRESSIVE;
// break;
// case 1:
// scan = VIDEO_SCAN_INTERLACED;
// break;
// case 2:
// scan = VIDEO_SCAN_UNKNOWN;
// break;
// default:
// scan = VIDEO_SCAN_RESERVED;
// break;
// }
// break;
case 1: // pic_timing
if (m_CpbDpbDelaysPresentFlag) { // cpb_dpb_delays_present_flag
bs.skipUeGolomb(); // cpb_removal_delay
bs.skipUeGolomb(); // dpb_output_delay
}
if (m_PicStructPresentFlag) { // pic_struct_present_flag
unsigned int pic_struct = bs.getBits(4); // pic_struct
if (pic_struct >= (sizeof(s_SeiNumClockTsTable) ) / sizeof(s_SeiNumClockTsTable[0]))
return 0;
for (int i = 0; i < s_SeiNumClockTsTable[pic_struct]; ++i) {
if (bs.getBit()) { // clock_timestamp_flag[i]
int full_timestamp_flag;
switch (bs.getBits(2)) { // ct_type
case 0:
scan = VIDEO_SCAN_PROGRESSIVE;
break;
case 1:
scan = VIDEO_SCAN_INTERLACED;
break;
case 2:
scan = VIDEO_SCAN_UNKNOWN;
break;
default:
scan = VIDEO_SCAN_RESERVED;
break;
}
//Dprintf("\nH.264 SEI: -> scan type %d", bit_rate, scan);
bs.skipBit(); // nuit_field_based_flag
bs.skipBits(5); // counting_type
full_timestamp_flag = bs.getBit(); // full_timestamp_flag
bs.skipBit(); // discontinuity_flag
bs.skipBit(); // cnt_dropped_flag
bs.skipBits(8); // n_frames
if (full_timestamp_flag) {
bs.skipBits(6); // seconds_value
bs.skipBits(6); // minutes_value
bs.skipBits(5); // hours_value
}
else {
if (bs.getBit()) { // seconds_flag
bs.skipBits(6); // seconds_value
if (bs.getBit()) { // minutes_flag
bs.skipBits(6); // minutes_value
if (bs.getBit()) // hours_flag
bs.skipBits(5); // hours_value
}
}
}
if (m_TimeOffsetLength > 0)
bs.skipBits(m_TimeOffsetLength); // time_offset
}
}
}
break;
case 12: // sub_seq_characteristics
bs.skipUeGolomb(); // sub_seq_layer_num
@@ -322,9 +457,9 @@ int cFemonH264::parseSEI(const uint8_t *buf, int len)
bs.skipBits(32); // sub_seq_duration
if (bs.getBit()) { // average_rate_flag
bs.skipBit(); // accurate_statistics_flag
bit_rate = bs.getU16(); // average_bit_rate
frame_rate = bs.getU16(); // average_frame_rate
//Dprintf("H.264 SEI: -> stream bitrate %.1f, frame rate %.1f", sei->bitrate, sei->frame_rate);
bit_rate = bs.getU16() / 1048.51; // average_bit_rate (1000 bit/s -> Mbit/s)
frame_rate = bs.getU16() / 256.0; // average_frame_rate (frames/256s)
//Dprintf("\nH.264 SEI: -> stream bitrate %.1f, frame rate %.1f", bit_rate, frame_rate);
}
num_referenced_subseqs = bs.getUeGolomb(); // num_referenced_subseqs
for (i = 0; i < num_referenced_subseqs; ++i) {
@@ -343,11 +478,9 @@ int cFemonH264::parseSEI(const uint8_t *buf, int len)
bs.byteAlign();
}
if (m_VideoHandler) {
m_VideoHandler->SetVideoFramerate(frame_rate);
m_VideoHandler->SetVideoBitrate(bit_rate);
m_VideoHandler->SetVideoScan(scan);
}
m_FrameRate = frame_rate;
m_BitRate = bit_rate;
m_Scan = scan;
return (bs.getIndex() / 8);
}

11
femonh264.h
View File

@@ -20,6 +20,16 @@ private:
};
cFemonVideoIf *m_VideoHandler;
unsigned int m_Width;
unsigned int m_Height;
eVideoAspectRatio m_AspectRatio;
eVideoFormat m_Format;
double m_FrameRate;
double m_BitRate;
eVideoScan m_Scan;
bool m_CpbDpbDelaysPresentFlag;
bool m_PicStructPresentFlag;
unsigned int m_TimeOffsetLength;
const uint8_t *nextStartCode(const uint8_t *start, const uint8_t *end);
int nalUnescape(uint8_t *dst, const uint8_t *src, int len);
@@ -28,6 +38,7 @@ private:
static const eVideoAspectRatio s_AspectRatios[];
static const eVideoFormat s_VideoFormats[];
static const uint8_t s_SeiNumClockTsTable[9];
public:
cFemonH264(cFemonVideoIf *videohandler);

14
femonosd.c
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@@ -493,7 +493,7 @@ void cFemonOsd::Action(void)
DrawStatusWindow();
}
else if (m_SvdrpConnection.handle >= 0) {
cmd.handle = m_SvdrpConnection.handle;
cmd.handle = m_SvdrpConnection.handle;
m_SvdrpPlugin->Service("SvdrpCommand-v1.0", &cmd);
if (cmd.responseCode == 900) {
for (cLine *line = cmd.reply.First(); line; line = cmd.reply.Next(line)) {
@@ -576,7 +576,7 @@ void cFemonOsd::Show(void)
if (channel) {
IS_AUDIO_TRACK(track) ? apid[0] = channel->Apid(int(track - ttAudioFirst)) : apid[0] = channel->Apid(0);
IS_DOLBY_TRACK(track) ? dpid[0] = channel->Dpid(int(track - ttDolbyFirst)) : dpid[0] = channel->Dpid(0);
m_Receiver = new cFemonReceiver(channel->GetChannelID(), channel->Ca(), channel->Vpid(), apid, dpid);
m_Receiver = new cFemonReceiver(channel->GetChannelID(), channel->Ca(), channel->Vtype(), channel->Vpid(), apid, dpid);
cDevice::ActualDevice()->AttachReceiver(m_Receiver);
}
}
@@ -621,7 +621,7 @@ void cFemonOsd::ChannelSwitch(const cDevice * device, int channelNumber)
if (channel) {
IS_AUDIO_TRACK(track) ? apid[0] = channel->Apid(int(track - ttAudioFirst)) : apid[0] = channel->Apid(0);
IS_DOLBY_TRACK(track) ? dpid[0] = channel->Dpid(int(track - ttDolbyFirst)) : dpid[0] = channel->Dpid(0);
m_Receiver = new cFemonReceiver(channel->GetChannelID(), channel->Ca(), channel->Vpid(), apid, dpid);
m_Receiver = new cFemonReceiver(channel->GetChannelID(), channel->Ca(), channel->Vtype(), channel->Vpid(), apid, dpid);
cDevice::ActualDevice()->AttachReceiver(m_Receiver);
}
}
@@ -642,7 +642,7 @@ void cFemonOsd::SetAudioTrack(int Index, const char * const *Tracks)
if (channel) {
IS_AUDIO_TRACK(track) ? apid[0] = channel->Apid(int(track - ttAudioFirst)) : apid[0] = channel->Apid(0);
IS_DOLBY_TRACK(track) ? dpid[0] = channel->Dpid(int(track - ttDolbyFirst)) : dpid[0] = channel->Dpid(0);
m_Receiver = new cFemonReceiver(channel->GetChannelID(), channel->Ca(), channel->Vpid(), apid, dpid);
m_Receiver = new cFemonReceiver(channel->GetChannelID(), channel->Ca(), channel->Vtype(), channel->Vpid(), apid, dpid);
cDevice::ActualDevice()->AttachReceiver(m_Receiver);
}
}
@@ -693,7 +693,7 @@ bool cFemonOsd::SvdrpConnect(void)
m_SvdrpPlugin->Service("SvdrpConnection-v1.0", &m_SvdrpConnection);
if (m_SvdrpConnection.handle >= 0) {
SvdrpCommand_v1_0 cmd;
cmd.handle = m_SvdrpConnection.handle;
cmd.handle = m_SvdrpConnection.handle;
cmd.command = cString::sprintf("PLUG %s\r\n", PLUGIN_NAME_I18N);
m_SvdrpPlugin->Service("SvdrpCommand-v1.0", &cmd);
if (cmd.responseCode != 214) {
@@ -716,7 +716,7 @@ bool cFemonOsd::SvdrpTune(void)
cChannel *channel = Channels.GetByNumber(cDevice::CurrentChannel());
if (channel) {
SvdrpCommand_v1_0 cmd;
cmd.handle = m_SvdrpConnection.handle;
cmd.handle = m_SvdrpConnection.handle;
cmd.command = cString::sprintf("CHAN %s\r\n", *channel->GetChannelID().ToString());
m_SvdrpPlugin->Service("SvdrpCommand-v1.0", &cmd);
if (cmd.responseCode == 250)
@@ -765,7 +765,7 @@ double cFemonOsd::GetDolbyBitrate(void)
}
eOSState cFemonOsd::ProcessKey(eKeys Key)
{
{
eOSState state = cOsdObject::ProcessKey(Key);
if (state == osUnknown) {
switch (Key) {

21
femonreceiver.c
View File

@@ -10,7 +10,7 @@
#include "femoncfg.h"
#include "femonreceiver.h"
cFemonReceiver::cFemonReceiver(tChannelID ChannelID, int Ca, int Vpid, int Apid[], int Dpid[])
cFemonReceiver::cFemonReceiver(tChannelID ChannelID, int Ca, int Vtype, int Vpid, int Apid[], int Dpid[])
: cReceiver(ChannelID, -1, Vpid, Apid, Dpid, NULL),
cThread("femon receiver"),
m_Sleep(),
@@ -19,6 +19,7 @@ cFemonReceiver::cFemonReceiver(tChannelID ChannelID, int Ca, int Vpid, int Apid[
m_DetectMPEG(this, this),
m_DetectAAC(this),
m_DetectAC3(this),
m_VideoType(Vtype),
m_VideoPid(Vpid),
m_VideoPacketCount(0),
m_VideoBitrate(0.0),
@@ -28,7 +29,7 @@ cFemonReceiver::cFemonReceiver(tChannelID ChannelID, int Ca, int Vpid, int Apid[
m_AudioBitrate(0.0),
m_AudioValid(false),
m_AC3Pid(Dpid[0]),
m_AC3PacketCount(0),
m_AC3PacketCount(0),
m_AC3Bitrate(0),
m_AC3Valid(false)
{
@@ -93,10 +94,18 @@ void cFemonReceiver::Receive(uchar *Data, int Length)
m_VideoPacketCount++;
if (TsPayloadStart(Data)) {
while (const uint8_t *p = m_VideoAssembler.GetPes(len)) {
if (m_DetectMPEG.processVideo(p, len) || m_DetectH264.processVideo(p, len)) {
m_VideoValid = true;
break;
}
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();
}

3
femonreceiver.h
View File

@@ -30,6 +30,7 @@ private:
cFemonAC3 m_DetectAC3;
cTsToPes m_VideoAssembler;
int m_VideoType;
int m_VideoPid;
int m_VideoPacketCount;
double m_VideoBitrate;
@@ -81,7 +82,7 @@ public:
virtual void SetAC3LFE(bool onoff) { m_AC3Info.lfe = onoff; }
public:
cFemonReceiver(tChannelID ChannelID, int Ca, int Vpid, int Apid[], int Dpid[]);
cFemonReceiver(tChannelID ChannelID, int Ca, int Vtype, int Vpid, int Apid[], int Dpid[]);
virtual ~cFemonReceiver();
void Deactivate(void);

36
femontools.h
View File

@@ -79,23 +79,25 @@ public:
cBitStream(const uint8_t *buf, const int len);
~cBitStream();
int getBit();
uint32_t getBits(uint32_t n);
void skipBits(uint32_t n);
uint32_t getUeGolomb();
int32_t getSeGolomb();
void skipGolomb();
void skipUeGolomb();
void skipSeGolomb();
void byteAlign();
void skipBit() { skipBits(1); }
uint32_t getU8() { return getBits(8); }
uint32_t getU16() { return ((getBits(8) << 8) | getBits(8)); }
uint32_t getU24() { return ((getBits(8) << 16) | (getBits(8) << 8) | getBits(8)); }
uint32_t getU32() { return ((getBits(8) << 24) | (getBits(8) << 16) | (getBits(8) << 8) | getBits(8)); }
bool isEOF() { return (index >= count); }
void reset() { index = 0; }
int getIndex() { return (isEOF() ? count : index);}
int getBit();
uint32_t getBits(uint32_t n);
void skipBits(uint32_t n);
uint32_t getUeGolomb();
int32_t getSeGolomb();
void skipGolomb();
void skipUeGolomb();
void skipSeGolomb();
void byteAlign();
void skipBit() { skipBits(1); }
uint32_t getU8() { return getBits(8); }
uint32_t getU16() { return ((getBits(8) << 8) | getBits(8)); }
uint32_t getU24() { return ((getBits(8) << 16) | (getBits(8) << 8) | getBits(8)); }
uint32_t getU32() { return ((getBits(8) << 24) | (getBits(8) << 16) | (getBits(8) << 8) | getBits(8)); }
bool isEOF() { return (index >= count); }
void reset() { index = 0; }
int getIndex() { return (isEOF() ? count : index); }
const uint8_t *getData() { return (isEOF() ? NULL : data + (index / 8)); }
};
#endif // __FEMONTOOLS_H