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vdr/dvbspu.c
Klaus Schmidinger 889f7deeb4 Version 1.7.36 
VDR developer version 1.7.36 is now available at

       ftp://ftp.tvdr.de/vdr/Developer/vdr-1.7.36.tar.bz2

A 'diff' against the previous version is available at

       ftp://ftp.tvdr.de/vdr/Developer/vdr-1.7.35-1.7.36.diff

MD5 checksums:

e514f72a2a8c44f39e47b540d6ad325f  vdr-1.7.36.tar.bz2
9312a0d10bcda87d3c3c7e6dfbebcd05  vdr-1.7.35-1.7.36.diff

WARNING:
========

This is a developer version. Even though I use it in my productive
environment. I strongly recommend that you only use it under controlled
conditions and for testing and debugging.

From the HISTORY file:
- Added maximum SNR value for PCTV Systems nanoStick T2 290e (thanks to Antti
  Hartikainen).
- Added a remark indicating that the coordinates of Rect in a call to
  cDevice::CanScaleVideo() are in the range of the width and height returned by
  GetOsdSize() (suggested by Reinhard Nissl).
- Modified the Makefiles (thanks to Christopher Reimer).
  By default VDR is now built according to the FHS ("File system Hierarchy Standard"),
  and a plain "make" in the VDR source directory just builds everything, but doesn't
  copy it to ./PLUGINS/lib and ./locale any more. You can use a Make.config file
  (copied from Make.config.template) and set the parameter LCLBLD=1 to have everything
  built and installed under the VDR source tree (as was the default in previous
  versions). If you already have your own Make.config file, you may want to copy the
  new Make.config.template and adapt it to your needs. If you don't want VDR's data
  files to be spread around your system according to the FHS, you can set the
  parameter ONEDIR=1 (using Make.config) to have all files in one /video directory as
  before.
- Fixed the example for cReceiver in PLUGINS.html.
- Fixed sorting recordings in case two folders have the same name, but one of them
  ends in an additional digit, as in "abc" and "abc2" (reported by Andreas Mair).
- Added "repeat" function when using the keyboard to control VDR (thanks to Reinhard
  Nissl).
- The SVDRP command LSTR now knows the additional parameter "path", which can be
  given to get the actual file name of a recording's directory (suggested by
  Stefan Stolz).
- Fixed multiple occurrences of the same directory in the recordings list in case there
  are directories that only differ in non-alphanumeric characters (reported by Andreas
  Mair).
- Absolute jumps when replaying a recording (via the Red key) are now only performed
  if an actual value has been entered (suggested by Ulf Kiener).
- The last replayed recording is now stored in setup.conf, which allows the blue
  "Resume" key in the main menu to work even after a restart of VDR.
- The SVDRP command NEWT no longer checks whether a timer with the given data already
  exists (suggested by Malte Forkel).
- Implemented scaling of SPU bitmaps (thanks to Johann Friedrichs).
- Improved cutting MPEG-2 video (thanks to Sören Moch).
- Reduced the number of retries in cTransfer::Receive() to avoid blocking recordings
  in case the primary device can't handle the current live signal.
2013-01-22 00:35:10 +01:00

668 lines
19 KiB
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/*
* SPU decoder for DVB devices
*
* Copyright (C) 2001.2002 Andreas Schultz <aschultz@warp10.net>
*
* This code is distributed under the terms and conditions of the
* GNU GENERAL PUBLIC LICENSE. See the file COPYING for details.
*
* parts of this file are derived from the OMS program.
*
* $Id: dvbspu.c 2.10 2013/01/20 10:36:58 kls Exp $
*/
#include "dvbspu.h"
#include <assert.h>
#include <string.h>
#include <inttypes.h>
#include <math.h>
/*
* cDvbSpubitmap:
*
* this is a bitmap of the full screen and two palettes
* the normal palette for the background and the highlight palette
*
* Inputs:
* - a SPU rle encoded image on creation, which will be decoded into
* the full screen indexed bitmap
*
* Output:
* - a minimal sized cDvbSpuBitmap a given palette, the indexed bitmap
* will be scanned to get the smallest possible resulting bitmap considering
* transparencies
*/
// #define SPUDEBUG
#ifdef SPUDEBUG
#define DEBUG(format, args...) printf (format, ## args)
#else
#define DEBUG(format, args...)
#endif
// --- cDvbSpuPalette---------------------------------------------------------
void cDvbSpuPalette::setPalette(const uint32_t * pal)
{
for (int i = 0; i < 16; i++)
palette[i] = yuv2rgb(pal[i]);
}
// --- cDvbSpuBitmap ---------------------------------------------------------
#define setMin(a, b) if (a > b) a = b
#define setMax(a, b) if (a < b) a = b
// DVD SPU bitmaps cover max. 720 x 576 - this sizes the SPU bitmap
#define spuXres 720
#define spuYres 576
#define revRect(r1, r2) { r1.x1 = r2.x2; r1.y1 = r2.y2; r1.x2 = r2.x1; r1.y2 = r2.y1; }
cDvbSpuBitmap::cDvbSpuBitmap(sDvbSpuRect size,
uint8_t * fodd, uint8_t * eodd,
uint8_t * feven, uint8_t * eeven)
{
size.x1 = max(size.x1, 0);
size.y1 = max(size.y1, 0);
size.x2 = min(size.x2, spuXres - 1);
size.y2 = min(size.y2, spuYres - 1);
bmpsize = size;
revRect(minsize[0], size);
revRect(minsize[1], size);
revRect(minsize[2], size);
revRect(minsize[3], size);
int MemSize = spuXres * spuYres * sizeof(uint8_t);
bmp = new uint8_t[MemSize];
if (bmp)
memset(bmp, 0, MemSize);
putFieldData(0, fodd, eodd);
putFieldData(1, feven, eeven);
}
cDvbSpuBitmap::~cDvbSpuBitmap()
{
delete[]bmp;
}
cBitmap *cDvbSpuBitmap::getBitmap(const aDvbSpuPalDescr paldescr,
const cDvbSpuPalette & pal,
sDvbSpuRect & size) const
{
int h = size.height();
int w = size.width();
if (size.y1 + h >= spuYres)
h = spuYres - size.y1 - 1;
if (size.x1 + w >= spuXres)
w = spuXres - size.x1 - 1;
if (w & 0x03)
w += 4 - (w & 0x03);
cBitmap *ret = new cBitmap(w, h, 2);
// set the palette
for (int i = 0; i < 4; i++) {
uint32_t color =
pal.getColor(paldescr[i].index, paldescr[i].trans);
ret->SetColor(i, (tColor) color);
}
// set the content
if (bmp) {
for (int yp = 0; yp < h; yp++) {
for (int xp = 0; xp < w; xp++) {
uint8_t idx = bmp[(size.y1 + yp) * spuXres + size.x1 + xp];
ret->SetIndex(xp, yp, idx);
}
}
}
return ret;
}
// find the minimum non-transparent area
bool cDvbSpuBitmap::getMinSize(const aDvbSpuPalDescr paldescr,
sDvbSpuRect & size) const
{
bool ret = false;
for (int i = 0; i < 4; i++) {
if (paldescr[i].trans != 0) {
if (!ret)
size = minsize[i];
else {
setMin(size.x1, minsize[i].x1);
setMin(size.y1, minsize[i].y1);
setMax(size.x2, minsize[i].x2);
setMax(size.y2, minsize[i].y2);
}
ret = true;
}
}
if (ret)
DEBUG("MinSize: (%d, %d) x (%d, %d)\n",
size.x1, size.y1, size.x2, size.y2);
if (size.x1 > size.x2 || size.y1 > size.y2)
return false;
return ret;
}
void cDvbSpuBitmap::putPixel(int xp, int yp, int len, uint8_t colorid)
{
if (bmp)
memset(bmp + spuXres * yp + xp, colorid, len);
setMin(minsize[colorid].x1, xp);
setMin(minsize[colorid].y1, yp);
setMax(minsize[colorid].x2, xp + len - 1);
setMax(minsize[colorid].y2, yp);
}
static uint8_t getBits(uint8_t * &data, uint8_t & bitf)
{
uint8_t ret = *data;
if (bitf)
ret >>= 4;
else
data++;
bitf ^= 1;
return (ret & 0xf);
}
void cDvbSpuBitmap::putFieldData(int field, uint8_t * data, uint8_t * endp)
{
int xp = bmpsize.x1;
int yp = bmpsize.y1 + field;
uint8_t bitf = 1;
while (data < endp) {
uint16_t vlc = getBits(data, bitf);
if (vlc < 0x0004) {
vlc = (vlc << 4) | getBits(data, bitf);
if (vlc < 0x0010) {
vlc = (vlc << 4) | getBits(data, bitf);
if (vlc < 0x0040) {
vlc = (vlc << 4) | getBits(data, bitf);
}
}
}
uint8_t color = vlc & 0x03;
int len = vlc >> 2;
// if len == 0 -> end sequence - fill to end of line
len = len ? len : bmpsize.x2 - xp + 1;
putPixel(xp, yp, len, color);
xp += len;
if (xp > bmpsize.x2) {
// nextLine
if (!bitf)
data++;
bitf = 1;
xp = bmpsize.x1;
yp += 2;
if (yp > bmpsize.y2)
return;
}
}
}
// --- cDvbSpuDecoder---------------------------------------------------------
#define CMD_SPU_MENU 0x00
#define CMD_SPU_SHOW 0x01
#define CMD_SPU_HIDE 0x02
#define CMD_SPU_SET_PALETTE 0x03
#define CMD_SPU_SET_ALPHA 0x04
#define CMD_SPU_SET_SIZE 0x05
#define CMD_SPU_SET_PXD_OFFSET 0x06
#define CMD_SPU_CHG_COLCON 0x07
#define CMD_SPU_EOF 0xff
#define spuU32(i) ((spu[i] << 8) + spu[i+1])
cDvbSpuDecoder::cDvbSpuDecoder()
{
clean = true;
scaleMode = eSpuNormal;
spu = NULL;
osd = NULL;
spubmp = NULL;
allowedShow = false;
}
cDvbSpuDecoder::~cDvbSpuDecoder()
{
delete spubmp;
delete spu;
delete osd;
}
// SPUs must be scaled if screensize is not 720x576
void cDvbSpuDecoder::SetSpuScaling(void)
{
int Width = spuXres;
int Height = spuYres;
int OsdWidth = 0;
int OsdHeight = 0;
double VideoAspect;
cDevice::PrimaryDevice()->GetOsdSize(OsdWidth, OsdHeight, VideoAspect);
DEBUG("dvbspu SetSpuScaling OsdSize %d x %d\n", OsdWidth, OsdHeight);
if (!OsdWidth) { // guess correct size
if (Setup.OSDWidth <= 720 || Setup.OSDHeight <= 576)
xscaling = yscaling = 1.0;
else if (Setup.OSDWidth <= 1280 || Setup.OSDHeight <= 720) {
xscaling = 1280.0 / Width;
yscaling = 720.0 / Height;
}
else {
xscaling = 1920.0 / Width;
yscaling = 1080.0/ Height;
}
}
else {
xscaling = (double)OsdWidth / Width;
yscaling = (double)OsdHeight / Height;
}
DEBUG("dvbspu xscaling = %f yscaling = %f\n", xscaling, yscaling);
}
void cDvbSpuDecoder::processSPU(uint32_t pts, uint8_t * buf, bool AllowedShow)
{
setTime(pts);
DEBUG("SPU pushData: pts: %d\n", pts);
delete spubmp;
spubmp = NULL;
delete[]spu;
spu = buf;
spupts = pts;
DCSQ_offset = cmdOffs();
prev_DCSQ_offset = 0;
clean = true;
allowedShow = AllowedShow;
}
void cDvbSpuDecoder::setScaleMode(cSpuDecoder::eScaleMode ScaleMode)
{
scaleMode = ScaleMode;
}
void cDvbSpuDecoder::setPalette(uint32_t * pal)
{
palette.setPalette(pal);
}
void cDvbSpuDecoder::setHighlight(uint16_t sx, uint16_t sy,
uint16_t ex, uint16_t ey,
uint32_t palette)
{
aDvbSpuPalDescr pld;
for (int i = 0; i < 4; i++) {
pld[i].index = 0xf & (palette >> (16 + 4 * i));
pld[i].trans = 0xf & (palette >> (4 * i));
}
bool ne = hlpsize.x1 != sx || hlpsize.y1 != sy ||
hlpsize.x2 != ex || hlpsize.y2 != ey ||
pld[0] != hlpDescr[0] || pld[1] != hlpDescr[1] ||
pld[2] != hlpDescr[2] || pld[3] != hlpDescr[3];
if (ne) {
DEBUG("setHighlight: %d,%d x %d,%d\n", sx, sy, ex, ey);
hlpsize.x1 = sx;
hlpsize.y1 = sy;
hlpsize.x2 = ex;
hlpsize.y2 = ey;
memcpy(hlpDescr, pld, sizeof(aDvbSpuPalDescr));
highlight = true;
clean = false;
Draw(); // we have to trigger Draw() here
}
}
void cDvbSpuDecoder::clearHighlight(void)
{
clean &= !highlight;
highlight = false;
hlpsize.x1 = -1;
hlpsize.y1 = -1;
hlpsize.x2 = -1;
hlpsize.y2 = -1;
}
sDvbSpuRect cDvbSpuDecoder::CalcAreaSize(sDvbSpuRect fgsize, cBitmap *fgbmp, sDvbSpuRect bgsize, cBitmap *bgbmp)
{
sDvbSpuRect size;
if (fgbmp && bgbmp) {
size.x1 = min(fgsize.x1, bgsize.x1);
size.y1 = min(fgsize.y1, bgsize.y1);
size.x2 = max(fgsize.x2, bgsize.x2);
size.y2 = max(fgsize.y2, bgsize.y2);
}
else if (fgbmp) {
size.x1 = fgsize.x1;
size.y1 = fgsize.y1;
size.x2 = fgsize.x2;
size.y2 = fgsize.y2;
}
else if (bgbmp) {
size.x1 = bgsize.x1;
size.y1 = bgsize.y1;
size.x2 = bgsize.x2;
size.y2 = bgsize.y2;
}
else {
size.x1 = 0;
size.y1 = 0;
size.x2 = 0;
size.y2 = 0;
}
return size;
}
int cDvbSpuBitmap::getMinBpp(const aDvbSpuPalDescr paldescr)
{
int col = 1;
for (int i = 0; i < 4; i++) {
if (paldescr[i].trans != 0) {
col++;
}
}
return col > 2 ? 2 : 1;
}
int cDvbSpuDecoder::CalcAreaBpp(cBitmap *fgbmp, cBitmap *bgbmp)
{
int fgbpp = 0;
int bgbpp = 0;
int ret;
if (fgbmp) {
fgbpp = spubmp->getMinBpp(hlpDescr);
}
if (bgbmp) {
bgbpp = spubmp->getMinBpp(palDescr);
}
ret = fgbpp + bgbpp;
if (ret > 2)
ret = 4;
return ret;
}
void cDvbSpuDecoder::Draw(void)
{
cMutexLock MutexLock(&mutex);
if (!spubmp) {
Hide();
return;
}
sDvbSpuRect bgsize;
sDvbSpuRect drawsize;
sDvbSpuRect bgdrawsize;
cBitmap *fg = NULL;
cBitmap *bg = NULL;
cBitmap *tmp = NULL;
SetSpuScaling(); // always set current scaling, size could have changed
if (highlight) {
tmp = spubmp->getBitmap(hlpDescr, palette, hlpsize);
fg = tmp->Scaled(xscaling, yscaling, true);
drawsize.x1 = hlpsize.x1 * xscaling;
drawsize.y1 = hlpsize.y1 * yscaling;
drawsize.x2 = drawsize.x1 + fg->Width();
drawsize.y2 = drawsize.y1 + fg->Height();
}
if (spubmp->getMinSize(palDescr, bgsize)) {
tmp = spubmp->getBitmap(palDescr, palette, bgsize);
bg = tmp->Scaled(xscaling, yscaling, true);
bgdrawsize.x1 = bgsize.x1 * xscaling;
bgdrawsize.y1 = bgsize.y1 * yscaling;
bgdrawsize.x2 = bgdrawsize.x1 + bg->Width();
bgdrawsize.y2 = bgdrawsize.y1 + bg->Height();
}
if (osd) // always rewrite OSD
Hide();
if (osd == NULL) {
restricted_osd = false;
osd = cOsdProvider::NewOsd(0, 0);
sDvbSpuRect areaSize = CalcAreaSize(drawsize, fg, bgdrawsize, bg); // combine
tArea Area = { areaSize.x1, areaSize.y1, areaSize.x2, areaSize.y2, 4 };
if (osd->CanHandleAreas(&Area, 1) != oeOk) {
DEBUG("dvbspu CanHandleAreas (%d,%d)x(%d,%d), 4 failed\n", areaSize.x1, areaSize.y1, areaSize.x2, areaSize.y2);
restricted_osd = true;
}
else
osd->SetAreas(&Area, 1);
}
if (restricted_osd) {
sDvbSpuRect hlsize;
bool setarea = false;
/* reduce fg area */
if (fg) {
spubmp->getMinSize(hlpDescr,hlsize);
/* clip to the highligh area */
setMax(hlsize.x1, hlpsize.x1);
setMax(hlsize.y1, hlpsize.y1);
setMin(hlsize.x2, hlpsize.x2);
setMin(hlsize.y2, hlpsize.y2);
if (hlsize.x1 > hlsize.x2 || hlsize.y1 > hlsize.y2)
hlsize.x1 = hlsize.x2 = hlsize.y1 = hlsize.y2 = 0;
/* resize scaled fg */
drawsize.x1=hlsize.x1 * xscaling;
drawsize.y1=hlsize.y1 * yscaling;
drawsize.x2=hlsize.x2 * xscaling;
drawsize.y2=hlsize.y2 * yscaling;
}
sDvbSpuRect areaSize = CalcAreaSize(drawsize, fg, bgdrawsize, bg);
#define DIV(a, b) (a/b)?:1
for (int d = 1; !setarea && d <= 2; d++) {
/* first try old behaviour */
tArea Area = { areaSize.x1, areaSize.y1, areaSize.x2, areaSize.y2, DIV(CalcAreaBpp(fg, bg), d) };
if ((Area.Width() & 7) != 0)
Area.x2 += 8 - (Area.Width() & 7);
if (osd->CanHandleAreas(&Area, 1) == oeOk &&
osd->SetAreas(&Area, 1) == oeOk)
setarea = true;
/* second try to split area if there is both area */
if (!setarea && fg && bg) {
tArea Area_Both [2] = {
{ bgdrawsize.x1, bgdrawsize.y1, bgdrawsize.x2, bgdrawsize.y2, DIV(CalcAreaBpp(0, bg), d) },
{ drawsize.x1, drawsize.y1, drawsize.x2, drawsize.y2, DIV(CalcAreaBpp(fg, 0), d) }
};
if (!Area_Both[0].Intersects(Area_Both[1])) {
/* there is no intersection. We can try with split areas */
if ((Area_Both[0].Width() & 7) != 0)
Area_Both[0].x2 += 8 - (Area_Both[0].Width() & 7);
if ((Area_Both[1].Width() & 7) != 0)
Area_Both[1].x2 += 8 - (Area_Both[1].Width() & 7);
if (osd->CanHandleAreas(Area_Both, 2) == oeOk &&
osd->SetAreas(Area_Both, 2) == oeOk)
setarea = true;
}
}
}
if (setarea)
DEBUG("dvbspu: reduced AreaSize (%d, %d) (%d, %d) Bpp %d\n", areaSize.x1, areaSize.y1, areaSize.x2, areaSize.y2, (fg && bg) ? 4 : 2);
else
dsyslog("dvbspu: reduced AreaSize (%d, %d) (%d, %d) Bpp %d failed", areaSize.x1, areaSize.y1, areaSize.x2, areaSize.y2, (fg && bg) ? 4 : 2);
}
/* we could draw use DrawPixel on osd */
if (bg || fg) {
if (bg)
osd->DrawBitmap(bgdrawsize.x1, bgdrawsize.y1, *bg);
if (fg)
osd->DrawBitmap(drawsize.x1, drawsize.y1, *fg);
delete fg;
delete bg;
delete tmp;
osd->Flush();
}
clean = true;
}
void cDvbSpuDecoder::Hide(void)
{
cMutexLock MutexLock(&mutex);
delete osd;
osd = NULL;
}
void cDvbSpuDecoder::Empty(void)
{
Hide();
delete spubmp;
spubmp = NULL;
delete[]spu;
spu = NULL;
clearHighlight();
clean = true;
}
int cDvbSpuDecoder::setTime(uint32_t pts)
{
if (!spu)
return 0;
if (!clean)
Draw();
while (DCSQ_offset != prev_DCSQ_offset) { /* Display Control Sequences */
int i = DCSQ_offset;
state = spNONE;
uint32_t exec_time = spupts + spuU32(i) * 1024;
if ((pts != 0) && (exec_time > pts))
return 0;
DEBUG("offs = %d, rel = %d, time = %d, pts = %d, diff = %d\n",
i, spuU32(i) * 1024, exec_time, pts, exec_time - pts);
if (pts != 0) {
uint16_t feven = 0;
uint16_t fodd = 0;
i += 2;
prev_DCSQ_offset = DCSQ_offset;
DCSQ_offset = spuU32(i);
DEBUG("offs = %d, DCSQ = %d, prev_DCSQ = %d\n",
i, DCSQ_offset, prev_DCSQ_offset);
i += 2;
while (spu[i] != CMD_SPU_EOF) { // Command Sequence
switch (spu[i]) {
case CMD_SPU_SHOW: // show subpicture
DEBUG("\tshow subpicture\n");
state = spSHOW;
i++;
break;
case CMD_SPU_HIDE: // hide subpicture
DEBUG("\thide subpicture\n");
state = spHIDE;
i++;
break;
case CMD_SPU_SET_PALETTE: // CLUT
palDescr[0].index = spu[i + 2] & 0xf;
palDescr[1].index = spu[i + 2] >> 4;
palDescr[2].index = spu[i + 1] & 0xf;
palDescr[3].index = spu[i + 1] >> 4;
i += 3;
break;
case CMD_SPU_SET_ALPHA: // transparency palette
palDescr[0].trans = spu[i + 2] & 0xf;
palDescr[1].trans = spu[i + 2] >> 4;
palDescr[2].trans = spu[i + 1] & 0xf;
palDescr[3].trans = spu[i + 1] >> 4;
i += 3;
break;
case CMD_SPU_SET_SIZE: // image coordinates
size.x1 = (spu[i + 1] << 4) | (spu[i + 2] >> 4);
size.x2 = ((spu[i + 2] & 0x0f) << 8) | spu[i + 3];
size.y1 = (spu[i + 4] << 4) | (spu[i + 5] >> 4);
size.y2 = ((spu[i + 5] & 0x0f) << 8) | spu[i + 6];
DEBUG("\t(%d, %d) x (%d, %d)\n",
size.x1, size.y1, size.x2, size.y2);
i += 7;
break;
case CMD_SPU_SET_PXD_OFFSET: // image 1 / image 2 offsets
fodd = spuU32(i + 1);
feven = spuU32(i + 3);
DEBUG("\todd = %d even = %d\n", fodd, feven);
i += 5;
break;
case CMD_SPU_CHG_COLCON: {
int size = spuU32(i + 1);
i += 1 + size;
}
break;
case CMD_SPU_MENU:
DEBUG("\tspu menu\n");
state = spMENU;
i++;
break;
default:
esyslog("invalid sequence in control header (%.2x)",
spu[i]);
Empty();
return 0;
}
}
if (fodd != 0 && feven != 0) {
Hide();
delete spubmp;
spubmp = new cDvbSpuBitmap(size, spu + fodd, spu + feven,
spu + feven, spu + cmdOffs());
}
} else if (!clean)
state = spSHOW;
if ((state == spSHOW && allowedShow) || state == spMENU)
Draw();
if (state == spHIDE)
Hide();
if (pts == 0)
return 0;
}
return 1;
}
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