diff options
Diffstat (limited to 'dvbspu.h')
| -rw-r--r-- | dvbspu.h | 204 |
1 files changed, 204 insertions, 0 deletions
diff --git a/dvbspu.h b/dvbspu.h new file mode 100644 index 00000000..5ac2d0ac --- /dev/null +++ b/dvbspu.h @@ -0,0 +1,204 @@ +/* + * 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.h 1.1 2002/09/08 14:17:38 kls Exp $ + */ + +#ifndef __DVBSPU_H +#define __DVBSPU_H + +#include <inttypes.h> + +#include "osdbase.h" +#include "spu.h" + +typedef struct sDvbSpuPalDescr { + uint8_t index; + uint8_t trans; + + bool operator != (const sDvbSpuPalDescr pd) const { + return index != pd.index && trans != pd.trans; + }; +} aDvbSpuPalDescr[4]; + +typedef struct sDvbSpuRect { + int x1, y1; + int x2, y2; + + int width() { + return x2 - x1 + 1; + }; + int height() { + return y2 - y1 + 1; + }; + + bool operator != (const sDvbSpuRect r) const { + return r.x1 != x1 || r.y1 != y1 || r.x2 != x2 || r.y2 != y2; + }; +} + +sDvbSpuRect; + +// --- cDvbSpuPalette---------------------------------- + +class cDvbSpuPalette { + private: + uint32_t palette[16]; + + private: + uint32_t yuv2rgb(uint32_t yuv_color); + + public: + void setPalette(const uint32_t * pal); + uint32_t getColor(uint8_t idx, uint8_t trans) const; +}; + +// --- cDvbSpuBitmap---------------------------------- + +class cDvbSpuBitmap { + + public: + private: + sDvbSpuRect bmpsize; + sDvbSpuRect minsize[4]; + uint8_t *bmp; + + private: + void putPixel(int xp, int yp, int len, uint8_t colorid); + void putFieldData(int field, uint8_t * data, uint8_t * endp); + + public: + cDvbSpuBitmap(sDvbSpuRect size, + uint8_t * fodd, uint8_t * eodd, + uint8_t * feven, uint8_t * eeven); + ~cDvbSpuBitmap(); + + bool getMinSize(const aDvbSpuPalDescr paldescr, + sDvbSpuRect & size) const; + cBitmap *getBitmap(const aDvbSpuPalDescr paldescr, + const cDvbSpuPalette & pal, + sDvbSpuRect & size) const; +}; + +// --- cDvbSpuDecoder------------------------------------ + +class cDvbSpuDecoder:public cSpuDecoder { + private: + cOsdBase * osd; + + // processing state + uint8_t *spu; + bool clean; + bool ready; + + enum spFlag { spNONE, spHIDE, spSHOW, spMENU }; + spFlag state; + + cSpuDecoder::eScaleMode scaleMode; + + //highligh area + bool highlight; + sDvbSpuRect hlpsize; + aDvbSpuPalDescr hlpDescr; + + //palette + cDvbSpuPalette palette; + + // spu info's + sDvbSpuRect size; + aDvbSpuPalDescr palDescr; + + uint16_t DCSQ_offset; + uint16_t prev_DCSQ_offset; + + cDvbSpuBitmap *spubmp; + private: + int cmdOffs(void) { + return ((spu[2] << 8) | spu[3]); + }; + int spuSize(void) { + return ((spu[0] << 8) | spu[1]); + }; + + int ScaleYcoord(int value); + int ScaleYres(int value); + void DrawBmp(sDvbSpuRect & size, cBitmap * bmp); + + void Draw(); + void Hide(); + + public: + cDvbSpuDecoder(); + ~cDvbSpuDecoder(); + + int setTime(uint32_t pts); + + void setScaleMode(cSpuDecoder::eScaleMode ScaleMode); + void setPalette(uint32_t * pal); + void setHighlight(uint16_t sx, uint16_t sy, uint16_t ex, uint16_t ey, + uint32_t palette); + void clearHighlight(void); + void Empty(void); + void processSPU(uint32_t pts, uint8_t * buf); +}; + +// --- cDvbSpuPalette ------------------------------------------- + +inline uint32_t cDvbSpuPalette::yuv2rgb(uint32_t yuv_color) +{ + int Y, Cb, Cr; + int Ey, Epb, Epr; + int Eg, Eb, Er; + uint32_t result; + + Y = (yuv_color >> 16) & 0xff; + Cb = (yuv_color) & 0xff; + Cr = (yuv_color >> 8) & 0xff; + + Ey = (Y - 16); + Epb = (Cb - 128); + Epr = (Cr - 128); + /* ITU-R 709 + Eg = (298*Ey - 55*Epb - 137*Epr)/256; + Eb = (298*Ey + 543*Epb)/256; + Er = (298*Ey + 460*Epr)/256; + */ + /* FCC ~= mediaLib */ + Eg = (298 * Ey - 100 * Epb - 208 * Epr) / 256; + Eb = (298 * Ey + 516 * Epb) / 256; + Er = (298 * Ey + 408 * Epr) / 256; + + if (Eg > 255) + Eg = 255; + if (Eg < 0) + Eg = 0; + + if (Eb > 255) + Eb = 255; + if (Eb < 0) + Eb = 0; + + if (Er > 255) + Er = 255; + if (Er < 0) + Er = 0; + + result = (Eb << 16) | (Eg << 8) | Er; + + return result; +} + +inline uint32_t cDvbSpuPalette::getColor(uint8_t idx, uint8_t trans) const +{ + uint8_t t = trans == 0x0f ? 0xff : trans << 4; + return palette[idx] | (t << 24); +} + +#endif // __DVBSPU_H |