mirror of
https://github.com/VDR4Arch/vdr.git
synced 2023-10-10 13:36:52 +02:00
554 lines
14 KiB
C
554 lines
14 KiB
C
/*
|
|
* 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 1.12 2005/02/06 09:54:51 kls Exp $
|
|
*/
|
|
|
|
#include <assert.h>
|
|
#include <string.h>
|
|
#include <inttypes.h>
|
|
#include <math.h>
|
|
|
|
#include "device.h"
|
|
#include "dvbspu.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
|
|
|
|
#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)
|
|
{
|
|
if (size.x1 < 0 || size.y1 < 0 || size.x2 >= spuXres
|
|
|| size.y2 >= spuYres)
|
|
throw;
|
|
|
|
bmpsize = size;
|
|
revRect(minsize[0], size);
|
|
revRect(minsize[1], size);
|
|
revRect(minsize[2], size);
|
|
revRect(minsize[3], size);
|
|
|
|
if (!(bmp = new uint8_t[spuXres * spuYres * sizeof(uint8_t)]))
|
|
throw;
|
|
|
|
memset(bmp, 0, spuXres * spuYres * sizeof(uint8_t));
|
|
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
|
|
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);
|
|
|
|
return ret;
|
|
}
|
|
|
|
void cDvbSpuBitmap::putPixel(int xp, int yp, int len, uint8_t colorid)
|
|
{
|
|
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 + len - 1);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
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;
|
|
}
|
|
}
|
|
|
|
void cDvbSpuDecoder::clearHighlight(void)
|
|
{
|
|
clean &= !highlight;
|
|
highlight = false;
|
|
hlpsize.x1 = -1;
|
|
hlpsize.y1 = -1;
|
|
hlpsize.x2 = -1;
|
|
hlpsize.y2 = -1;
|
|
}
|
|
|
|
int cDvbSpuDecoder::ScaleYcoord(int value)
|
|
{
|
|
if (scaleMode == eSpuLetterBox) {
|
|
int offset = cDevice::PrimaryDevice()->GetVideoSystem() == vsPAL ? 72 : 60;
|
|
return lround((value * 3.0) / 4.0) + offset;
|
|
}
|
|
else
|
|
return value;
|
|
}
|
|
|
|
int cDvbSpuDecoder::ScaleYres(int value)
|
|
{
|
|
if (scaleMode == eSpuLetterBox)
|
|
return lround((value * 3.0) / 4.0);
|
|
else
|
|
return value;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void cDvbSpuDecoder::Draw(void)
|
|
{
|
|
if (!spubmp) {
|
|
Hide();
|
|
return;
|
|
}
|
|
|
|
cBitmap *fg = NULL;
|
|
cBitmap *bg = NULL;
|
|
sDvbSpuRect bgsize;
|
|
sDvbSpuRect hlsize;
|
|
|
|
hlsize.x1 = hlpsize.x1;
|
|
hlsize.y1 = ScaleYcoord(hlpsize.y1);
|
|
hlsize.x2 = hlpsize.x2;
|
|
hlsize.y2 = ScaleYcoord(hlpsize.y2);
|
|
|
|
if (highlight)
|
|
fg = spubmp->getBitmap(hlpDescr, palette, hlsize);
|
|
|
|
if (spubmp->getMinSize(palDescr, bgsize)) {
|
|
bg = spubmp->getBitmap(palDescr, palette, bgsize);
|
|
if (scaleMode == eSpuLetterBox) {
|
|
// the coordinates have to be modified for letterbox
|
|
int y1 = ScaleYres(bgsize.y1) + bgsize.height();
|
|
bgsize.y2 = y1 + bgsize.height();
|
|
bgsize.y1 = y1;
|
|
}
|
|
}
|
|
|
|
sDvbSpuRect areaSize = CalcAreaSize(hlsize, fg, bgsize, bg);
|
|
|
|
if (!fg || !bg || !osd) {
|
|
Hide();
|
|
}
|
|
|
|
if (bg || fg) {
|
|
if (osd == NULL) {
|
|
osd = cOsdProvider::NewOsd(0, 0);
|
|
int x2 = areaSize.x2;
|
|
while ((x2 - areaSize.x1 + 1) & 0x03)
|
|
x2++;
|
|
tArea Area = { areaSize.x1, areaSize.y1, x2, areaSize.y2, (fg && bg) ? 4 : 2 };
|
|
osd->SetAreas(&Area, 1);
|
|
}
|
|
|
|
if (bg)
|
|
osd->DrawBitmap(bgsize.x1, bgsize.y1, *bg);
|
|
if (fg)
|
|
osd->DrawBitmap(hlsize.x1, hlsize.y1, *fg);
|
|
delete fg;
|
|
delete bg;
|
|
|
|
osd->Flush();
|
|
}
|
|
|
|
clean = true;
|
|
}
|
|
|
|
void cDvbSpuDecoder::Hide(void)
|
|
{
|
|
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 (spu && !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)\n",
|
|
spu[i]);
|
|
assert(0);
|
|
i++;
|
|
break;
|
|
}
|
|
}
|
|
if (fodd != 0 && feven != 0) {
|
|
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;
|
|
}
|