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Code Issues Releases Wiki Activity

Fixed handling DVB subtitles and implemented decoding textual DVB subtitles

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This commit is contained in:
Klaus Schmidinger 2011-09-18 11:36:38 +02:00
parent b1f6b586d4
commit 0ecf6b00d4
5 changed files with 491 additions and 256 deletions
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1
CONTRIBUTORS
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@ -1117,6 +1117,7 @@ Rolf Ahrenberg <rahrenbe@cc.hut.fi>
for making the Audio and Subtitles options available through the Green and Yellow for making the Audio and Subtitles options available through the Green and Yellow
keys in the Setup/DVB menu keys in the Setup/DVB menu
for making the Recordings menu display the length (in hours:minutes) of each recording for making the Recordings menu display the length (in hours:minutes) of each recording
for fixing handling DVB subtitles and implementing decoding textual DVB subtitles
Ralf Klueber <ralf.klueber@vodafone.com> Ralf Klueber <ralf.klueber@vodafone.com>
for reporting a bug in cutting a recording if there is only a single editing mark for reporting a bug in cutting a recording if there is only a single editing mark

4
HISTORY
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@ -6743,7 +6743,7 @@ Video Disk Recorder Revision History
extends over TS packet boundaries is now done by locally skipping TS packets extends over TS packet boundaries is now done by locally skipping TS packets
in cFrameDetector. in cFrameDetector.
2011-09-11: Version 1.7.22 2011-09-18: Version 1.7.22
- Fixed scaling subtitles in case the primary device's GetVideoSize() function doesn't - Fixed scaling subtitles in case the primary device's GetVideoSize() function doesn't
return actual values (thanks to Luca Olivetti). return actual values (thanks to Luca Olivetti).
@ -6758,3 +6758,5 @@ Video Disk Recorder Revision History
- The configuration file name has been changed from "unicable.conf" to "scr.conf". - The configuration file name has been changed from "unicable.conf" to "scr.conf".
- Updated sources.conf (thanks to Arthur Konovalov). - Updated sources.conf (thanks to Arthur Konovalov).
- The SVDRP command LSTC now also accepts channel IDs (thanks to Dominic Evans). - The SVDRP command LSTC now also accepts channel IDs (thanks to Dominic Evans).
- Fixed handling DVB subtitles and implemented decoding textual DVB subtitles (thanks
to Rolf Ahrenberg).

527
dvbsubtitle.c
View File

@ -7,7 +7,7 @@
* Original author: Marco Schlüßler <marco@lordzodiac.de> * Original author: Marco Schlüßler <marco@lordzodiac.de>
* With some input from the "subtitle plugin" by Pekka Virtanen <pekka.virtanen@sci.fi> * With some input from the "subtitle plugin" by Pekka Virtanen <pekka.virtanen@sci.fi>
* *
* $Id: dvbsubtitle.c 2.19 2011/09/10 09:43:40 kls Exp $ * $Id: dvbsubtitle.c 2.20 2011/09/18 11:23:15 kls Exp $
*/ */
@ -15,13 +15,18 @@
#define __STDC_FORMAT_MACROS // Required for format specifiers #define __STDC_FORMAT_MACROS // Required for format specifiers
#include <inttypes.h> #include <inttypes.h>
#include "device.h" #include "device.h"
#include "libsi/si.h"
//#define FINISHPAGE_HACK
#define PAGE_COMPOSITION_SEGMENT 0x10 #define PAGE_COMPOSITION_SEGMENT 0x10
#define REGION_COMPOSITION_SEGMENT 0x11 #define REGION_COMPOSITION_SEGMENT 0x11
#define CLUT_DEFINITION_SEGMENT 0x12 #define CLUT_DEFINITION_SEGMENT 0x12
#define OBJECT_DATA_SEGMENT 0x13 #define OBJECT_DATA_SEGMENT 0x13
#define DISPLAY_DEFINITION_SEGMENT 0x14 #define DISPLAY_DEFINITION_SEGMENT 0x14
#define DISPARITY_SIGNALING_SEGMENT 0x15 // DVB BlueBook A156
#define END_OF_DISPLAY_SET_SEGMENT 0x80 #define END_OF_DISPLAY_SET_SEGMENT 0x80
#define STUFFING_SEGMENT 0xFF
// Set these to 'true' for debug output: // Set these to 'true' for debug output:
static bool DebugConverter = false; static bool DebugConverter = false;
@ -61,8 +66,68 @@ cSubtitleClut::cSubtitleClut(int ClutId)
,palette4(4) ,palette4(4)
,palette8(8) ,palette8(8)
{ {
int a = 0, r = 0, g = 0, b = 0;
clutId = ClutId; clutId = ClutId;
version = -1; version = -1;
// ETSI EN 300 743 10.3: 4-entry CLUT default contents
palette2.SetColor(0, ArgbToColor( 0, 0, 0, 0));
palette2.SetColor(1, ArgbToColor(255, 255, 255, 255));
palette2.SetColor(2, ArgbToColor(255, 0, 0, 0));
palette2.SetColor(3, ArgbToColor(255, 127, 127, 127));
// ETSI EN 300 743 10.2: 16-entry CLUT default contents
palette4.SetColor(0, ArgbToColor(0, 0, 0, 0));
for (int i = 1; i < 16; ++i) {
if (i < 8) {
r = (i & 1) ? 255 : 0;
g = (i & 2) ? 255 : 0;
b = (i & 4) ? 255 : 0;
}
else {
r = (i & 1) ? 127 : 0;
g = (i & 2) ? 127 : 0;
b = (i & 4) ? 127 : 0;
}
palette4.SetColor(i, ArgbToColor(255, r, g, b));
}
// ETSI EN 300 743 10.1: 256-entry CLUT default contents
palette8.SetColor(0, ArgbToColor(0, 0, 0, 0));
for (int i = 1; i < 256; ++i) {
if (i < 8) {
r = (i & 1) ? 255 : 0;
g = (i & 2) ? 255 : 0;
b = (i & 4) ? 255 : 0;
a = 63;
}
else {
switch (i & 0x88) {
case 0x00:
r = ((i & 1) ? 85 : 0) + ((i & 0x10) ? 170 : 0);
g = ((i & 2) ? 85 : 0) + ((i & 0x20) ? 170 : 0);
b = ((i & 4) ? 85 : 0) + ((i & 0x40) ? 170 : 0);
a = 255;
break;
case 0x08:
r = ((i & 1) ? 85 : 0) + ((i & 0x10) ? 170 : 0);
g = ((i & 2) ? 85 : 0) + ((i & 0x20) ? 170 : 0);
b = ((i & 4) ? 85 : 0) + ((i & 0x40) ? 170 : 0);
a = 127;
break;
case 0x80:
r = 127 + ((i & 1) ? 43 : 0) + ((i & 0x10) ? 85 : 0);
g = 127 + ((i & 2) ? 43 : 0) + ((i & 0x20) ? 85 : 0);
b = 127 + ((i & 4) ? 43 : 0) + ((i & 0x40) ? 85 : 0);
a = 255;
break;
case 0x88:
r = ((i & 1) ? 43 : 0) + ((i & 0x10) ? 85 : 0);
g = ((i & 2) ? 43 : 0) + ((i & 0x20) ? 85 : 0);
b = ((i & 4) ? 43 : 0) + ((i & 0x40) ? 85 : 0);
a = 255;
break;
}
}
palette8.SetColor(i, ArgbToColor(a, r, g, b));
}
} }
void cSubtitleClut::SetColor(int Bpp, int Index, tColor Color) void cSubtitleClut::SetColor(int Bpp, int Index, tColor Color)
@ -94,29 +159,33 @@ private:
int version; int version;
int codingMethod; int codingMethod;
bool nonModifyingColorFlag; bool nonModifyingColorFlag;
int nibblePos; uchar backgroundPixelCode;
uchar backgroundColor; uchar foregroundPixelCode;
uchar foregroundColor;
int providerFlag; int providerFlag;
int px; int px;
int py; int py;
cBitmap *bitmap; cBitmap *bitmap;
char textData[Utf8BufSize(256)]; // number of character codes is an 8-bit field
void DrawLine(int x, int y, tIndex Index, int Length); void DrawLine(int x, int y, tIndex Index, int Length);
uchar Get2Bits(const uchar *Data, int &Index); bool Decode2BppCodeString(cBitStream *bs, int&x, int y, const uint8_t *MapTable);
uchar Get4Bits(const uchar *Data, int &Index); bool Decode4BppCodeString(cBitStream *bs, int&x, int y, const uint8_t *MapTable);
bool Decode2BppCodeString(const uchar *Data, int &Index, int&x, int y); bool Decode8BppCodeString(cBitStream *bs, int&x, int y);
bool Decode4BppCodeString(const uchar *Data, int &Index, int&x, int y);
bool Decode8BppCodeString(const uchar *Data, int &Index, int&x, int y);
public: public:
cSubtitleObject(int ObjectId, cBitmap *Bitmap); cSubtitleObject(int ObjectId, cBitmap *Bitmap);
int ObjectId(void) { return objectId; } int ObjectId(void) { return objectId; }
int Version(void) { return version; } int Version(void) { return version; }
int CodingMethod(void) { return codingMethod; } int CodingMethod(void) { return codingMethod; }
uchar BackgroundPixelCode(void) { return backgroundPixelCode; }
uchar ForegroundPixelCode(void) { return foregroundPixelCode; }
const char *TextData(void) { return &textData[0]; }
int X(void) { return px; }
int Y(void) { return py; }
bool NonModifyingColorFlag(void) { return nonModifyingColorFlag; } bool NonModifyingColorFlag(void) { return nonModifyingColorFlag; }
void DecodeCharacterString(const uchar *Data, int NumberOfCodes);
void DecodeSubBlock(const uchar *Data, int Length, bool Even); void DecodeSubBlock(const uchar *Data, int Length, bool Even);
void SetVersion(int Version) { version = Version; } void SetVersion(int Version) { version = Version; }
void SetBackgroundColor(uchar BackgroundColor) { backgroundColor = BackgroundColor; } void SetBackgroundPixelCode(uchar BackgroundPixelCode) { backgroundPixelCode = BackgroundPixelCode; }
void SetForegroundColor(uchar ForegroundColor) { foregroundColor = ForegroundColor; } void SetForegroundPixelCode(uchar ForegroundPixelCode) { foregroundPixelCode = ForegroundPixelCode; }
void SetNonModifyingColorFlag(bool NonModifyingColorFlag) { nonModifyingColorFlag = NonModifyingColorFlag; } void SetNonModifyingColorFlag(bool NonModifyingColorFlag) { nonModifyingColorFlag = NonModifyingColorFlag; }
void SetCodingMethod(int CodingMethod) { codingMethod = CodingMethod; } void SetCodingMethod(int CodingMethod) { codingMethod = CodingMethod; }
void SetPosition(int x, int y) { px = x; py = y; } void SetPosition(int x, int y) { px = x; py = y; }
@ -129,53 +198,99 @@ cSubtitleObject::cSubtitleObject(int ObjectId, cBitmap *Bitmap)
version = -1; version = -1;
codingMethod = -1; codingMethod = -1;
nonModifyingColorFlag = false; nonModifyingColorFlag = false;
nibblePos = 0; backgroundPixelCode = 0;
backgroundColor = 0; foregroundPixelCode = 0;
foregroundColor = 0;
providerFlag = -1; providerFlag = -1;
px = py = 0; px = py = 0;
bitmap = Bitmap; bitmap = Bitmap;
memset(textData, 0, sizeof(textData));
}
void cSubtitleObject::DecodeCharacterString(const uchar *Data, int NumberOfCodes)
{
if (NumberOfCodes > 0) {
bool singleByte;
const uchar *from = &Data[1];
int len = NumberOfCodes * 2 - 1;
cCharSetConv conv(SI::getCharacterTable(from, len, &singleByte));
if (singleByte) {
char txt[NumberOfCodes + 1];
char *p = txt;
for (int i = 2; i < NumberOfCodes; ++i) {
char c = Data[i * 2 + 1] & 0xFF;
if (c == 0)
break;
if (' ' <= c && c <= '~' || c == '\n' || 0xA0 <= c)
*(p++) = c;
else if (c == 0x8A)
*(p++) = '\n';
}
*p = 0;
const char *s = conv.Convert(txt);
Utf8Strn0Cpy(textData, s, Utf8StrLen(s));
}
else {
// TODO: add proper multibyte support for "UTF-16", "EUC-KR", "GB2312", "GBK", "UTF-8"
}
}
} }
void cSubtitleObject::DecodeSubBlock(const uchar *Data, int Length, bool Even) void cSubtitleObject::DecodeSubBlock(const uchar *Data, int Length, bool Even)
{ {
int x = 0; int x = 0;
int y = Even ? 0 : 1; int y = Even ? 0 : 1;
for (int index = 0; index < Length; ) { uint8_t map2to4[ 4] = { 0x00, 0x07, 0x08, 0x0F };
switch (Data[index++]) { uint8_t map2to8[ 4] = { 0x00, 0x77, 0x88, 0xFF };
case 0x10: { uint8_t map4to8[16] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x88, 0x99, 0xAA, 0xBB, 0xCC, 0xDD, 0xEE, 0xFF };
nibblePos = 8; const uint8_t *mapTable = NULL;
while (Decode2BppCodeString(Data, index, x, y) && index < Length) cBitStream bs(Data, Length * 8);
; while (!bs.IsEOF()) {
if (!nibblePos) switch (bs.GetBits(8)) {
index++; case 0x10:
break; dbgobjects("2-bit / pixel code string\n");
switch (bitmap->Bpp()) {
case 8: mapTable = map2to8; break;
case 4: mapTable = map2to4; break;
default: mapTable = NULL; break;
} }
case 0x11: { while (Decode2BppCodeString(&bs, x, y, mapTable) && !bs.IsEOF())
nibblePos = 4;
while (Decode4BppCodeString(Data, index, x, y) && index < Length)
; ;
if (!nibblePos) bs.ByteAlign();
index++;
break; break;
case 0x11:
dbgobjects("4-bit / pixel code string\n");
switch (bitmap->Bpp()) {
case 8: mapTable = map4to8; break;
default: mapTable = NULL; break;
} }
while (Decode4BppCodeString(&bs, x, y, mapTable) && !bs.IsEOF())
;
bs.ByteAlign();
break;
case 0x12: case 0x12:
while (Decode8BppCodeString(Data, index, x, y) && index < Length) dbgobjects("8-bit / pixel code string\n");
while (Decode8BppCodeString(&bs, x, y) && !bs.IsEOF())
; ;
break; break;
case 0x20: //TODO case 0x20:
dbgobjects("sub block 2 to 4 map\n"); dbgobjects("sub block 2 to 4 map\n");
index += 4; map2to4[0] = bs.GetBits(4);
map2to4[1] = bs.GetBits(4);
map2to4[2] = bs.GetBits(4);
map2to4[3] = bs.GetBits(4);
break; break;
case 0x21: //TODO case 0x21:
dbgobjects("sub block 2 to 8 map\n"); dbgobjects("sub block 2 to 8 map\n");
index += 4; for (int i = 0; i < 4; ++i)
map2to8[i] = bs.GetBits(8);
break; break;
case 0x22: //TODO case 0x22:
dbgobjects("sub block 4 to 8 map\n"); dbgobjects("sub block 4 to 8 map\n");
index += 16; for (int i = 0; i < 16; ++i)
map4to8[i] = bs.GetBits(8);
break; break;
case 0xF0: case 0xF0:
dbgobjects("end of object line\n");
x = 0; x = 0;
y += 2; y += 2;
break; break;
@ -194,87 +309,68 @@ void cSubtitleObject::DrawLine(int x, int y, tIndex Index, int Length)
bitmap->SetIndex(pos, y, Index); bitmap->SetIndex(pos, y, Index);
} }
uchar cSubtitleObject::Get2Bits(const uchar *Data, int &Index) bool cSubtitleObject::Decode2BppCodeString(cBitStream *bs, int &x, int y, const uint8_t *MapTable)
{
uchar result = Data[Index];
if (!nibblePos) {
Index++;
nibblePos = 8;
}
nibblePos -= 2;
return (result >> nibblePos) & 0x03;
}
uchar cSubtitleObject::Get4Bits(const uchar *Data, int &Index)
{
uchar result = Data[Index];
if (!nibblePos) {
Index++;
nibblePos = 4;
}
else {
result >>= 4;
nibblePos -= 4;
}
return result & 0x0F;
}
bool cSubtitleObject::Decode2BppCodeString(const uchar *Data, int &Index, int &x, int y)
{ {
int rl = 0; int rl = 0;
int color = 0; int color = 0;
uchar code = Get2Bits(Data, Index); uchar code = bs->GetBits(2);
if (code) { if (code) {
color = code; color = code;
rl = 1; rl = 1;
} }
else { else if (bs->GetBit()) { // switch_1
code = Get2Bits(Data, Index); rl = bs->GetBits(3) + 3;
if (code & 2) { // switch_1 color = bs->GetBits(2);
rl = ((code & 1) << 2) + Get2Bits(Data, Index) + 3;
color = Get2Bits(Data, Index);
} }
else if (code & 1) else if (bs->GetBit()) // switch_2
rl = 1; //color 0 rl = 1; //color 0
else { else {
code = Get2Bits(Data, Index); switch (bs->GetBits(2)) { // switch_3
switch (code & 3) { //switch_3
case 0: case 0:
return false; return false;
case 1: case 1:
rl = 2; //color 0 rl = 2; //color 0
break; break;
case 2: case 2:
rl = (Get2Bits(Data, Index) << 2) + Get2Bits(Data, Index) + 12; rl = bs->GetBits(4) + 12;
color = Get2Bits(Data, Index); color = bs->GetBits(2);
break; break;
case 3: case 3:
rl = (Get2Bits(Data, Index) << 6) + (Get2Bits(Data, Index) << 4) + (Get2Bits(Data, Index) << 2) + Get2Bits(Data, Index) + 29; rl = bs->GetBits(8) + 29;
color = Get2Bits(Data, Index); color = bs->GetBits(2);
break; break;
default: ; default: ;
} }
} }
} if (MapTable)
color = MapTable[color];
DrawLine(x, y, color, rl); DrawLine(x, y, color, rl);
x += rl; x += rl;
return true; return true;
} }
bool cSubtitleObject::Decode4BppCodeString(const uchar *Data, int &Index, int &x, int y) bool cSubtitleObject::Decode4BppCodeString(cBitStream *bs, int &x, int y, const uint8_t *MapTable)
{ {
int rl = 0; int rl = 0;
int color = 0; int color = 0;
uchar code = Get4Bits(Data, Index); uchar code = bs->GetBits(4);
if (code) { if (code) {
color = code; color = code;
rl = 1; rl = 1;
} }
else if (bs->GetBit() == 0) { // switch_1
code = bs->GetBits(3);
if (code)
rl = code + 2; //color 0
else
return false;
}
else if (bs->GetBit() == 0) { // switch_2
rl = bs->GetBits(2) + 4;
color = bs->GetBits(4);
}
else { else {
code = Get4Bits(Data, Index); switch (bs->GetBits(2)) { // switch_3
if (code & 8) { // switch_1
if (code & 4) { //switch_2
switch (code & 3) { //switch_3
case 0: // color 0 case 0: // color 0
rl = 1; rl = 1;
break; break;
@ -282,48 +378,41 @@ bool cSubtitleObject::Decode4BppCodeString(const uchar *Data, int &Index, int &x
rl = 2; rl = 2;
break; break;
case 2: case 2:
rl = Get4Bits(Data, Index) + 9; rl = bs->GetBits(4) + 9;
color = Get4Bits(Data, Index); color = bs->GetBits(4);
break; break;
case 3: case 3:
rl = (Get4Bits(Data, Index) << 4) + Get4Bits(Data, Index) + 25; rl = bs->GetBits(8) + 25;
color = Get4Bits(Data, Index); color = bs->GetBits(4);
break; break;
default: ;
}
}
else {
rl = (code & 3) + 4;
color = Get4Bits(Data, Index);
}
}
else { // color 0
if (!code)
return false;
rl = code + 2;
} }
} }
if (MapTable)
color = MapTable[color];
DrawLine(x, y, color, rl); DrawLine(x, y, color, rl);
x += rl; x += rl;
return true; return true;
} }
bool cSubtitleObject::Decode8BppCodeString(const uchar *Data, int &Index, int &x, int y) bool cSubtitleObject::Decode8BppCodeString(cBitStream *bs, int &x, int y)
{ {
int rl = 0; int rl = 0;
int color = 0; int color = 0;
uchar code = Data[Index++]; uchar code = bs->GetBits(8);
if (code) { if (code) {
color = code; color = code;
rl = 1; rl = 1;
} }
else if (bs->GetBit()) {
rl = bs->GetBits(7);
color = bs->GetBits(8);
}
else { else {
code = Data[Index++]; code = bs->GetBits(7);
rl = code & 0x63; if (code)
if (code & 0x80) rl = code; // color 0
color = Data[Index++]; else
else if (!rl) return false;
return false; //else color 0
} }
DrawLine(x, y, color, rl); DrawLine(x, y, color, rl);
x += rl; x += rl;
@ -340,6 +429,7 @@ private:
int horizontalAddress; int horizontalAddress;
int verticalAddress; int verticalAddress;
int level; int level;
int lineHeight;
cList<cSubtitleObject> objects; cList<cSubtitleObject> objects;
public: public:
cSubtitleRegion(int RegionId); cSubtitleRegion(int RegionId);
@ -358,6 +448,7 @@ public:
void SetDepth(int Depth); void SetDepth(int Depth);
void SetHorizontalAddress(int HorizontalAddress) { horizontalAddress = HorizontalAddress; } void SetHorizontalAddress(int HorizontalAddress) { horizontalAddress = HorizontalAddress; }
void SetVerticalAddress(int VerticalAddress) { verticalAddress = VerticalAddress; } void SetVerticalAddress(int VerticalAddress) { verticalAddress = VerticalAddress; }
void UpdateTextData(cSubtitleClut *Clut);
}; };
cSubtitleRegion::cSubtitleRegion(int RegionId) cSubtitleRegion::cSubtitleRegion(int RegionId)
@ -369,6 +460,7 @@ cSubtitleRegion::cSubtitleRegion(int RegionId)
horizontalAddress = 0; horizontalAddress = 0;
verticalAddress = 0; verticalAddress = 0;
level = 0; level = 0;
lineHeight = 26; // configurable subtitling font size
} }
void cSubtitleRegion::FillRegion(tIndex Index) void cSubtitleRegion::FillRegion(tIndex Index)
@ -394,6 +486,22 @@ cSubtitleObject *cSubtitleRegion::GetObjectById(int ObjectId, bool New)
return result; return result;
} }
void cSubtitleRegion::UpdateTextData(cSubtitleClut *Clut)
{
const cPalette *palette = Clut ? Clut->GetPalette(Depth()) : NULL;
for (cSubtitleObject *so = objects.First(); so && palette; so = objects.Next(so)) {
if (Utf8StrLen(so->TextData()) > 0) {
const cFont *font = cFont::GetFont(fontOsd);
cBitmap *tmp = new cBitmap(font->Width(so->TextData()), font->Height(), Depth());
double factor = (double)lineHeight / font->Height();
tmp->DrawText(0, 0, so->TextData(), palette->Color(so->ForegroundPixelCode()), palette->Color(so->BackgroundPixelCode()), font);
tmp = tmp->Scaled(factor, factor, true);
DrawBitmap(so->X(), so->Y(), *tmp);
DELETENULL(tmp);
}
}
}
void cSubtitleRegion::SetLevel(int Level) void cSubtitleRegion::SetLevel(int Level)
{ {
if (Level > 0 && Level < 4) if (Level > 0 && Level < 4)
@ -907,12 +1015,15 @@ bool cDvbSubtitleConverter::AssertOsd(void)
int cDvbSubtitleConverter::ExtractSegment(const uchar *Data, int Length, int64_t Pts) int cDvbSubtitleConverter::ExtractSegment(const uchar *Data, int Length, int64_t Pts)
{ {
if (Length > 5 && Data[0] == 0x0F) { cBitStream bs(Data, Length * 8);
int segmentLength = (Data[4] << 8) + Data[5] + 6; if (Length > 5 && bs.GetBits(8) == 0x0F) { // sync byte
if (segmentLength > Length) int segmentType = bs.GetBits(8);
if (segmentType == STUFFING_SEGMENT)
return -1;
int pageId = bs.GetBits(16);
int segmentLength = bs.GetBits(16);
if (!bs.SetLength(bs.Index() + segmentLength * 8))
return -1; return -1;
int segmentType = Data[1];
int pageId = (Data[2] << 8) + Data[3];
cDvbSubtitlePage *page = NULL; cDvbSubtitlePage *page = NULL;
LOCK_THREAD; LOCK_THREAD;
for (cDvbSubtitlePage *sp = pages->First(); sp; sp = pages->Next(sp)) { for (cDvbSubtitlePage *sp = pages->First(); sp; sp = pages->Next(sp)) {
@ -931,108 +1042,118 @@ int cDvbSubtitleConverter::ExtractSegment(const uchar *Data, int Length, int64_t
switch (segmentType) { switch (segmentType) {
case PAGE_COMPOSITION_SEGMENT: { case PAGE_COMPOSITION_SEGMENT: {
dbgsegments("PAGE_COMPOSITION_SEGMENT\n"); dbgsegments("PAGE_COMPOSITION_SEGMENT\n");
int pageVersion = (Data[6 + 1] & 0xF0) >> 4; int pageTimeout = bs.GetBits(8);
int pageVersion = bs.GetBits(4);
if (pageVersion == page->Version()) if (pageVersion == page->Version())
break; // no update break; // no update
page->SetVersion(pageVersion); page->SetVersion(pageVersion);
page->SetTimeout(Data[6]); page->SetTimeout(pageTimeout);
page->SetState((Data[6 + 1] & 0x0C) >> 2); page->SetState(bs.GetBits(2));
page->regions.Clear(); page->regions.Clear();
bs.SkipBits(2); // reserved
dbgpages("Update page id %d version %d pts %"PRId64" timeout %d state %d\n", pageId, page->Version(), page->Pts(), page->Timeout(), page->State()); dbgpages("Update page id %d version %d pts %"PRId64" timeout %d state %d\n", pageId, page->Version(), page->Pts(), page->Timeout(), page->State());
for (int i = 6 + 2; i < segmentLength; i += 6) { while (!bs.IsEOF()) {
cSubtitleRegion *region = page->GetRegionById(Data[i], true); cSubtitleRegion *region = page->GetRegionById(bs.GetBits(8), true);
region->SetHorizontalAddress((Data[i + 2] << 8) + Data[i + 3]); bs.SkipBits(8); // reserved
region->SetVerticalAddress((Data[i + 4] << 8) + Data[i + 5]); region->SetHorizontalAddress(bs.GetBits(16));
region->SetVerticalAddress(bs.GetBits(16));
} }
break; break;
} }
case REGION_COMPOSITION_SEGMENT: { case REGION_COMPOSITION_SEGMENT: {
dbgsegments("REGION_COMPOSITION_SEGMENT\n"); dbgsegments("REGION_COMPOSITION_SEGMENT\n");
cSubtitleRegion *region = page->GetRegionById(Data[6]); cSubtitleRegion *region = page->GetRegionById(bs.GetBits(8));
if (!region) if (!region)
break; break;
int regionVersion = (Data[6 + 1] & 0xF0) >> 4; int regionVersion = bs.GetBits(4);
if (regionVersion == region->Version()) if (regionVersion == region->Version())
break; // no update break; // no update
region->SetVersion(regionVersion); region->SetVersion(regionVersion);
bool regionFillFlag = (Data[6 + 1] & 0x08) >> 3; bool regionFillFlag = bs.GetBit();
int regionWidth = (Data[6 + 2] << 8) | Data[6 + 3]; bs.SkipBits(3); // reserved
int regionWidth = bs.GetBits(16);
if (regionWidth < 1) if (regionWidth < 1)
regionWidth = 1; regionWidth = 1;
int regionHeight = (Data[6 + 4] << 8) | Data[6 + 5]; int regionHeight = bs.GetBits(16);
if (regionHeight < 1) if (regionHeight < 1)
regionHeight = 1; regionHeight = 1;
region->SetSize(regionWidth, regionHeight); region->SetSize(regionWidth, regionHeight);
region->SetLevel((Data[6 + 6] & 0xE0) >> 5); region->SetLevel(bs.GetBits(3));
region->SetDepth((Data[6 + 6] & 0x1C) >> 2); region->SetDepth(bs.GetBits(3));
region->SetClutId(Data[6 + 7]); bs.SkipBits(2); // reserved
region->SetClutId(bs.GetBits(8));
dbgregions("Region pageId %d id %d version %d fill %d width %d height %d level %d depth %d clutId %d\n", pageId, region->RegionId(), region->Version(), regionFillFlag, regionWidth, regionHeight, region->Level(), region->Depth(), region->ClutId()); dbgregions("Region pageId %d id %d version %d fill %d width %d height %d level %d depth %d clutId %d\n", pageId, region->RegionId(), region->Version(), regionFillFlag, regionWidth, regionHeight, region->Level(), region->Depth(), region->ClutId());
int region8bitPixelCode = bs.GetBits(8);
int region4bitPixelCode = bs.GetBits(4);
int region2bitPixelCode = bs.GetBits(2);
bs.SkipBits(2); // reserved
if (regionFillFlag) { if (regionFillFlag) {
switch (region->Bpp()) { switch (region->Bpp()) {
case 2: region->FillRegion((Data[6 + 9] & 0x0C) >> 2); break; case 2: region->FillRegion(region8bitPixelCode); break;
case 4: region->FillRegion((Data[6 + 9] & 0xF0) >> 4); break; case 4: region->FillRegion(region4bitPixelCode); break;
case 8: region->FillRegion(Data[6 + 8]); break; case 8: region->FillRegion(region2bitPixelCode); break;
default: dbgregions("unknown bpp %d (%s %d)\n", region->Bpp(), __FUNCTION__, __LINE__); default: dbgregions("unknown bpp %d (%s %d)\n", region->Bpp(), __FUNCTION__, __LINE__);
} }
} }
for (int i = 6 + 10; i < segmentLength; i += 6) { while (!bs.IsEOF()) {
cSubtitleObject *object = region->GetObjectById((Data[i] << 8) | Data[i + 1], true); cSubtitleObject *object = region->GetObjectById(bs.GetBits(16), true);
int objectType = (Data[i + 2] & 0xC0) >> 6; int objectType = bs.GetBits(2);
object->SetCodingMethod(objectType); object->SetCodingMethod(objectType);
object->SetProviderFlag((Data[i + 2] & 0x30) >> 4); object->SetProviderFlag(bs.GetBits(2));
int objectHorizontalPosition = ((Data[i + 2] & 0x0F) << 8) | Data[i + 3]; int objectHorizontalPosition = bs.GetBits(12);
int objectVerticalPosition = ((Data[i + 4] & 0x0F) << 8) | Data[i + 5]; bs.SkipBits(4); // reserved
int objectVerticalPosition = bs.GetBits(12);
object->SetPosition(objectHorizontalPosition, objectVerticalPosition); object->SetPosition(objectHorizontalPosition, objectVerticalPosition);
if (objectType == 0x01 || objectType == 0x02) { if (objectType == 0x01 || objectType == 0x02) {
object->SetForegroundColor(Data[i + 6]); object->SetForegroundPixelCode(bs.GetBits(8));
object->SetBackgroundColor(Data[i + 7]); object->SetBackgroundPixelCode(bs.GetBits(8));
i += 2;
} }
} }
break; break;
} }
case CLUT_DEFINITION_SEGMENT: { case CLUT_DEFINITION_SEGMENT: {
dbgsegments("CLUT_DEFINITION_SEGMENT\n"); dbgsegments("CLUT_DEFINITION_SEGMENT\n");
cSubtitleClut *clut = page->GetClutById(Data[6], true); cSubtitleClut *clut = page->GetClutById(bs.GetBits(8), true);
int clutVersion = (Data[6 + 1] & 0xF0) >> 4; int clutVersion = bs.GetBits(4);
if (clutVersion == clut->Version()) if (clutVersion == clut->Version())
break; // no update break; // no update
clut->SetVersion(clutVersion); clut->SetVersion(clutVersion);
bs.SkipBits(4); // reserved
dbgcluts("Clut pageId %d id %d version %d\n", pageId, clut->ClutId(), clut->Version()); dbgcluts("Clut pageId %d id %d version %d\n", pageId, clut->ClutId(), clut->Version());
for (int i = 6 + 2; i < segmentLength; i += 2) { while (!bs.IsEOF()) {
uchar clutEntryId = Data[i]; uchar clutEntryId = bs.GetBits(8);
bool fullRangeFlag = Data[i + 1] & 1; bool entryClut2Flag = bs.GetBit();
bool entryClut4Flag = bs.GetBit();
bool entryClut8Flag = bs.GetBit();
bs.SkipBits(4); // reserved
uchar yval; uchar yval;
uchar crval; uchar crval;
uchar cbval; uchar cbval;
uchar tval; uchar tval;
if (fullRangeFlag) { if (bs.GetBit()) { // full_range_flag
yval = Data[i + 2]; yval = bs.GetBits(8);
crval = Data[i + 3]; crval = bs.GetBits(8);
cbval = Data[i + 4]; cbval = bs.GetBits(8);
tval = Data[i + 5]; tval = bs.GetBits(8);
} }
else { else {
yval = Data[i + 2] & 0xFC; yval = bs.GetBits(6) << 2;
crval = (Data[i + 2] & 0x03) << 6; crval = bs.GetBits(4) << 4;
crval |= (Data[i + 3] & 0xC0) >> 2; cbval = bs.GetBits(4) << 4;
cbval = (Data[i + 3] & 0x3C) << 2; tval = bs.GetBits(2) << 6;
tval = (Data[i + 3] & 0x03) << 6;
} }
tColor value = 0; tColor value = 0;
if (yval) { if (yval) {
value = yuv2rgb(yval, cbval, crval); value = yuv2rgb(yval, cbval, crval);
value |= ((10 - (clutEntryId ? Setup.SubtitleFgTransparency : Setup.SubtitleBgTransparency)) * (255 - tval) / 10) << 24; value |= ((10 - (clutEntryId ? Setup.SubtitleFgTransparency : Setup.SubtitleBgTransparency)) * (255 - tval) / 10) << 24;
} }
int EntryFlags = Data[i + 1]; dbgcluts("%2d %d %d %d %08X\n", clutEntryId, entryClut2Flag ? 2 : 0, entryClut4Flag ? 4 : 0, entryClut8Flag ? 8 : 0, value);
dbgcluts("%2d %d %d %d %08X\n", clutEntryId, (EntryFlags & 0x80) ? 2 : 0, (EntryFlags & 0x40) ? 4 : 0, (EntryFlags & 0x20) ? 8 : 0, value); if (entryClut2Flag)
if ((EntryFlags & 0x80) != 0)
clut->SetColor(2, clutEntryId, value); clut->SetColor(2, clutEntryId, value);
if ((EntryFlags & 0x40) != 0) if (entryClut4Flag)
clut->SetColor(4, clutEntryId, value); clut->SetColor(4, clutEntryId, value);
if ((EntryFlags & 0x20) != 0) if (entryClut8Flag)
clut->SetColor(8, clutEntryId, value); clut->SetColor(8, clutEntryId, value);
i += fullRangeFlag ? 4 : 2;
} }
dbgcluts("\n"); dbgcluts("\n");
page->UpdateRegionPalette(clut); page->UpdateRegionPalette(clut);
@ -1040,45 +1161,51 @@ int cDvbSubtitleConverter::ExtractSegment(const uchar *Data, int Length, int64_t
} }
case OBJECT_DATA_SEGMENT: { case OBJECT_DATA_SEGMENT: {
dbgsegments("OBJECT_DATA_SEGMENT\n"); dbgsegments("OBJECT_DATA_SEGMENT\n");
cSubtitleObject *object = page->GetObjectById((Data[6] << 8) | Data[6 + 1]); cSubtitleObject *object = page->GetObjectById(bs.GetBits(16));
if (!object) if (!object)
break; break;
int objectVersion = (Data[6 + 2] & 0xF0) >> 4; int objectVersion = bs.GetBits(4);
if (objectVersion == object->Version()) if (objectVersion == object->Version())
break; // no update break; // no update
object->SetVersion(objectVersion); object->SetVersion(objectVersion);
int codingMethod = (Data[6 + 2] & 0x0C) >> 2; int codingMethod = bs.GetBits(2);
object->SetNonModifyingColorFlag(Data[6 + 2] & 0x01); object->SetNonModifyingColorFlag(bs.GetBit());
bs.SkipBit(); // reserved
dbgobjects("Object pageId %d id %d version %d method %d modify %d\n", pageId, object->ObjectId(), object->Version(), object->CodingMethod(), object->NonModifyingColorFlag()); dbgobjects("Object pageId %d id %d version %d method %d modify %d\n", pageId, object->ObjectId(), object->Version(), object->CodingMethod(), object->NonModifyingColorFlag());
if (codingMethod == 0) { // coding of pixels if (codingMethod == 0) { // coding of pixels
int i = 6 + 3; int topFieldLength = bs.GetBits(16);
int topFieldLength = (Data[i] << 8) | Data[i + 1]; int bottomFieldLength = bs.GetBits(16);
int bottomFieldLength = (Data[i + 2] << 8) | Data[i + 3]; object->DecodeSubBlock(bs.GetData(), topFieldLength, true);
object->DecodeSubBlock(Data + i + 4, topFieldLength, true);
if (bottomFieldLength) if (bottomFieldLength)
object->DecodeSubBlock(Data + i + 4 + topFieldLength, bottomFieldLength, false); object->DecodeSubBlock(bs.GetData() + topFieldLength, bottomFieldLength, false);
else else
object->DecodeSubBlock(Data + i + 4, topFieldLength, false); object->DecodeSubBlock(bs.GetData(), topFieldLength, false);
bs.WordAlign();
} }
else if (codingMethod == 1) { // coded as a string of characters else if (codingMethod == 1) { // coded as a string of characters
//TODO implement textual subtitles int numberOfCodes = bs.GetBits(8);
object->DecodeCharacterString(bs.GetData(), numberOfCodes);
} }
#ifdef FINISHPAGE_HACK
FinishPage(page); // flush to OSD right away
#endif
break; break;
} }
case DISPLAY_DEFINITION_SEGMENT: { case DISPLAY_DEFINITION_SEGMENT: {
dbgsegments("DISPLAY_DEFINITION_SEGMENT\n"); dbgsegments("DISPLAY_DEFINITION_SEGMENT\n");
int version = (Data[6] & 0xF0) >> 4; int version = bs.GetBits(4);
if (version != ddsVersionNumber) { if (version != ddsVersionNumber) {
int displayWindowFlag = (Data[6] & 0x08) >> 3; bool displayWindowFlag = bs.GetBit();
windowHorizontalOffset = 0; windowHorizontalOffset = 0;
windowVerticalOffset = 0; windowVerticalOffset = 0;
displayWidth = windowWidth = ((Data[7] << 8) | Data[8]) + 1; bs.SkipBits(3); // reserved
displayHeight = windowHeight = ((Data[9] << 8) | Data[10]) + 1; displayWidth = windowWidth = bs.GetBits(16) + 1;
displayHeight = windowHeight = bs.GetBits(16) + 1;
if (displayWindowFlag) { if (displayWindowFlag) {
windowHorizontalOffset = (Data[11] << 8) | Data[12]; // displayWindowHorizontalPositionMinimum windowHorizontalOffset = bs.GetBits(16); // displayWindowHorizontalPositionMinimum
windowWidth = ((Data[13] << 8) | Data[14]) - windowHorizontalOffset + 1; // displayWindowHorizontalPositionMaximum windowWidth = bs.GetBits(16) - windowHorizontalOffset + 1; // displayWindowHorizontalPositionMaximum
windowVerticalOffset = (Data[15] << 8) | Data[16]; // displayWindowVerticalPositionMinimum windowVerticalOffset = bs.GetBits(16); // displayWindowVerticalPositionMinimum
windowHeight = ((Data[17] << 8) | Data[18]) - windowVerticalOffset + 1; // displayWindowVerticalPositionMaximum windowHeight = bs.GetBits(16) - windowVerticalOffset + 1; // displayWindowVerticalPositionMaximum
} }
SetOsdData(); SetOsdData();
SetupChanged(); SetupChanged();
@ -1086,15 +1213,56 @@ int cDvbSubtitleConverter::ExtractSegment(const uchar *Data, int Length, int64_t
} }
break; break;
} }
case DISPARITY_SIGNALING_SEGMENT: {
dbgsegments("DISPARITY_SIGNALING_SEGMENT\n");
bs.SkipBits(4); // dss_version_number
bool disparity_shift_update_sequence_page_flag = bs.GetBit();
bs.SkipBits(3); // reserved
bs.SkipBits(8); // page_default_disparity_shift
if (disparity_shift_update_sequence_page_flag) {
bs.SkipBits(8); // disparity_shift_update_sequence_length
bs.SkipBits(24); // interval_duration[23..0]
int division_period_count = bs.GetBits(8);
for (int i = 0; i < division_period_count; ++i) {
bs.SkipBits(8); // interval_count
bs.SkipBits(8); // disparity_shift_update_integer_part
}
}
while (!bs.IsEOF()) {
bs.SkipBits(8); // region_id
bool disparity_shift_update_sequence_region_flag = bs.GetBit();
bs.SkipBits(5); // reserved
int number_of_subregions_minus_1 = bs.GetBits(2);
for (int i = 0; i <= number_of_subregions_minus_1; ++i) {
if (number_of_subregions_minus_1 > 0) {
bs.SkipBits(16); // subregion_horizontal_position
bs.SkipBits(16); // subregion_width
}
bs.SkipBits(8); // subregion_disparity_shift_integer_part
bs.SkipBits(4); // subregion_disparity_shift_fractional_part
bs.SkipBits(4); // reserved
if (disparity_shift_update_sequence_region_flag) {
bs.SkipBits(8); // disparity_shift_update_sequence_length
bs.SkipBits(24); // interval_duration[23..0]
int division_period_count = bs.GetBits(8);
for (int i = 0; i < division_period_count; ++i) {
bs.SkipBits(8); // interval_count
bs.SkipBits(8); // disparity_shift_update_integer_part
}
}
}
}
break;
}
case END_OF_DISPLAY_SET_SEGMENT: { case END_OF_DISPLAY_SET_SEGMENT: {
dbgsegments("END_OF_DISPLAY_SET_SEGMENT\n"); dbgsegments("END_OF_DISPLAY_SET_SEGMENT\n");
FinishPage(page); FinishPage(page);
}
break; break;
}
default: default:
dbgsegments("*** unknown segment type: %02X\n", segmentType); dbgsegments("*** unknown segment type: %02X\n", segmentType);
} }
return segmentLength; return bs.Length() / 8;
} }
return -1; return -1;
} }
@ -1143,6 +1311,7 @@ void cDvbSubtitleConverter::FinishPage(cDvbSubtitlePage *Page)
cDvbSubtitleBitmaps *Bitmaps = new cDvbSubtitleBitmaps(Page->Pts(), Page->Timeout(), Areas, NumAreas, osdFactorX, osdFactorY); cDvbSubtitleBitmaps *Bitmaps = new cDvbSubtitleBitmaps(Page->Pts(), Page->Timeout(), Areas, NumAreas, osdFactorX, osdFactorY);
bitmaps->Add(Bitmaps); bitmaps->Add(Bitmaps);
for (cSubtitleRegion *sr = Page->regions.First(); sr; sr = Page->regions.Next(sr)) { for (cSubtitleRegion *sr = Page->regions.First(); sr; sr = Page->regions.Next(sr)) {
sr->UpdateTextData(Page->GetClutById(sr->ClutId()));
int posX = sr->HorizontalAddress(); int posX = sr->HorizontalAddress();
int posY = sr->VerticalAddress(); int posY = sr->VerticalAddress();
if (sr->Width() > 0 && sr->Height() > 0) { if (sr->Width() > 0 && sr->Height() > 0) {

43
tools.c
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and * See the main source file 'vdr.c' for copyright information and
* how to reach the author. * how to reach the author.
* *
* $Id: tools.c 2.17 2011/08/15 13:35:23 kls Exp $ * $Id: tools.c 2.18 2011/09/18 11:22:21 kls Exp $
*/ */
#include "tools.h" #include "tools.h"
@ -1196,6 +1196,47 @@ const char *cBase64Encoder::NextLine(void)
return NULL; return NULL;
} }
// --- cBitStream ------------------------------------------------------------
int cBitStream::GetBit(void)
{
if (index >= length)
return 1;
int r = (data[index >> 3] >> (7 - (index & 7))) & 1;
++index;
return r;
}
uint32_t cBitStream::GetBits(int n)
{
uint32_t r = 0;
while (n--)
r |= GetBit() << n;
return r;
}
void cBitStream::ByteAlign(void)
{
int n = index % 8;
if (n > 0)
SkipBits(8 - n);
}
void cBitStream::WordAlign(void)
{
int n = index % 16;
if (n > 0)
SkipBits(16 - n);
}
bool cBitStream::SetLength(int Length)
{
if (Length > length)
return false;
length = Length;
return true;
}
// --- cReadLine ------------------------------------------------------------- // --- cReadLine -------------------------------------------------------------
cReadLine::cReadLine(void) cReadLine::cReadLine(void)

24
tools.h
View File

@ -4,7 +4,7 @@
* See the main source file 'vdr.c' for copyright information and * See the main source file 'vdr.c' for copyright information and
* how to reach the author. * how to reach the author.
* *
* $Id: tools.h 2.11 2011/08/15 14:13:42 kls Exp $ * $Id: tools.h 2.12 2011/09/18 11:21:23 kls Exp $
*/ */
#ifndef __TOOLS_H #ifndef __TOOLS_H
@ -266,6 +266,28 @@ public:
///< is called, or until the object is destroyed. ///< is called, or until the object is destroyed.
}; };
class cBitStream {
private:
const uint8_t *data;
int length; // in bits
int index; // in bits
public:
cBitStream(const uint8_t *Data, int Length) : data(Data), length(Length), index(0) {}
~cBitStream() {}
int GetBit(void);
uint32_t GetBits(int n);
void ByteAlign(void);
void WordAlign(void);
bool SetLength(int Length);
void SkipBits(int n) { index += n; }
void SkipBit(void) { SkipBits(1); }
bool IsEOF(void) const { return index >= length; }
void Reset(void) { index = 0; }
int Length(void) const { return length; }
int Index(void) const { return (IsEOF() ? length : index); }
const uint8_t *GetData(void) const { return (IsEOF() ? NULL : data + (index / 8)); }
};
class cTimeMs { class cTimeMs {
private: private:
uint64_t begin; uint64_t begin;