mirror of
https://github.com/vdr-projects/vdr.git
synced 2025-03-01 10:50:46 +00:00
523c4a07aa
- Fixed the 'newplugin' script to make it name the target for creating the distribution package 'dist', as stated in the PLUGINS.html documentation. If you have already created a plugin source directory and Makefile you may want to check it and replace the 'package' target with 'dist' if necessary. - Changed device handling for being able to do simultaneous recording and replay on the same device (Time Shifting). In order for this to work you need to use a driver with a firmware version that has this feature implemented. - cDevice::ProvidesCa() is no longer virtual. The new function cDevice::ProvidesChannel() is now used to determine whether a device can receive a given channel, and by default this function returns false. So a device that is a pure replaying device doesn't need to do anything here. - Increased the recorder buffer size to 5MB in order to be able to better handle multiple recordings. - Implemented cTSBuffer for better handling TS packet buffering in derived cDevice classes. - Changed the interface if cDevice::GetTSPacket() to avoid unnecessary copying of data. - Removed cDevice::Channel(), since this makes no more sense with devices receiving multiple channels. - Switching through channels with the 'Up' and 'Down' keys now skips channels that are currently not available (for instance because all devices are recording and these channels are on different transponders). - Implemented an SPU decoder (thanks to Andreas Schultz). - Fixed a crash when entering an integer value outside the limits (thanks to Stefan Huelswitt for reporting this one). - Added play mode pmAudioOnlyBlack (thanks to Stefan Huelswitt).
506 lines
13 KiB
C
506 lines
13 KiB
C
/*
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* SPU decoder for DVB devices
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*
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* Copyright (C) 2001.2002 Andreas Schultz <aschultz@warp10.net>
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*
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* This code is distributed under the terms and conditions of the
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* GNU GENERAL PUBLIC LICENSE. See the file COPYING for details.
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*
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* parts of this file are derived from the OMS program.
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*
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* $Id: dvbspu.c 1.1 2002/09/08 14:17:35 kls Exp $
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*/
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#include <assert.h>
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#include <string.h>
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#include <inttypes.h>
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#include <math.h>
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#include "osd.h"
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#include "osdbase.h"
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#include "device.h"
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#include "dvbspu.h"
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/*
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* cDvbSpubitmap:
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*
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* this is a bitmap of the full screen and two palettes
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* the normal palette for the background and the highlight palette
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*
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* Inputs:
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* - a SPU rle encoded image on creation, which will be decoded into
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* the full screen indexed bitmap
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*
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* Output:
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* - a minimal sized cDvbSpuBitmap a given palette, the indexed bitmap
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* will be scanned to get the smallest possible resulting bitmap considering
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* transparencies
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*/
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// #define SPUDEBUG
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#ifdef SPUDEBUG
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#define DEBUG(format, args...) printf (format, ## args)
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#else
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#define DEBUG(format, args...)
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#endif
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// --- cDvbSpuPalette----------------------------------
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void cDvbSpuPalette::setPalette(const uint32_t * pal)
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{
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for (int i = 0; i < 16; i++)
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palette[i] = yuv2rgb(pal[i]);
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}
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// --- cDvbSpuBitmap --------------------------------------------
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#define setMin(a, b) if (a > b) a = b
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#define setMax(a, b) if (a < b) a = b
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#define spuXres 720
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#define spuYres 576
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#define revRect(r1, r2) { r1.x1 = r2.x2; r1.y1 = r2.y2; r1.x2 = r2.x1; r1.y2 = r2.y1; }
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cDvbSpuBitmap::cDvbSpuBitmap(sDvbSpuRect size,
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uint8_t * fodd, uint8_t * eodd,
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uint8_t * feven, uint8_t * eeven)
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{
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if (size.x1 < 0 || size.y1 < 0 || size.x2 >= spuXres
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|| size.y2 >= spuYres)
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throw;
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bmpsize = size;
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revRect(minsize[0], size);
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revRect(minsize[1], size);
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revRect(minsize[2], size);
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revRect(minsize[3], size);
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if (!(bmp = new uint8_t[spuXres * spuYres * sizeof(uint8_t)]))
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throw;
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memset(bmp, 0, spuXres * spuYres * sizeof(uint8_t));
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putFieldData(0, fodd, eodd);
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putFieldData(1, feven, eeven);
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}
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cDvbSpuBitmap::~cDvbSpuBitmap()
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{
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delete[]bmp;
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}
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cBitmap *cDvbSpuBitmap::getBitmap(const aDvbSpuPalDescr paldescr,
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const cDvbSpuPalette & pal,
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sDvbSpuRect & size) const
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{
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int h = size.height();
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int w = size.width();
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if (size.y1 + h >= spuYres)
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h = spuYres - size.y1 - 1;
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if (size.x1 + w >= spuXres)
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w = spuXres - size.x1 - 1;
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if (w & 0x03)
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w += 4 - (w & 0x03);
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cBitmap *ret = new cBitmap(w, h, 2, true);
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// set the palette
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for (int i = 0; i < 4; i++) {
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uint32_t color =
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pal.getColor(paldescr[i].index, paldescr[i].trans);
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ret->SetColor(i, (eDvbColor) color);
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}
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// set the content
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for (int yp = 0; yp < h; yp++) {
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for (int xp = 0; xp < w; xp++) {
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uint8_t idx = bmp[(size.y1 + yp) * spuXres + size.x1 + xp];
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ret->SetIndex(xp, yp, idx);
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}
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}
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return ret;
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}
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// find the minimum non-transparent area
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bool cDvbSpuBitmap::getMinSize(const aDvbSpuPalDescr paldescr,
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sDvbSpuRect & size) const
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{
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bool ret = false;
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for (int i = 0; i < 4; i++) {
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if (paldescr[i].trans != 0) {
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if (!ret)
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size = minsize[i];
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else {
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setMin(size.x1, minsize[i].x1);
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setMin(size.y1, minsize[i].y1);
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setMax(size.x2, minsize[i].x2);
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setMax(size.y2, minsize[i].y2);
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ret = true;
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}
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}
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}
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if (ret)
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DEBUG("MinSize: (%d, %d) x (%d, %d)\n",
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size.x1, size.y1, size.x2, size.y2);
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return ret;
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}
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void cDvbSpuBitmap::putPixel(int xp, int yp, int len, uint8_t colorid)
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{
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memset(bmp + spuXres * yp + xp, colorid, len);
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setMin(minsize[colorid].x1, xp);
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setMin(minsize[colorid].y1, yp);
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setMax(minsize[colorid].x2, xp + len - 1);
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setMax(minsize[colorid].y2, yp + len - 1);
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}
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static uint8_t getBits(uint8_t * &data, uint8_t & bitf)
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{
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uint8_t ret = *data;
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if (bitf)
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ret >>= 4;
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else
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data++;
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bitf ^= 1;
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return (ret & 0xf);
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}
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void cDvbSpuBitmap::putFieldData(int field, uint8_t * data, uint8_t * endp)
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{
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int xp = bmpsize.x1;
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int yp = bmpsize.y1 + field;
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uint8_t bitf = 1;
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while (data < endp) {
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uint16_t vlc = getBits(data, bitf);
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if (vlc < 0x0004) {
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vlc = (vlc << 4) | getBits(data, bitf);
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if (vlc < 0x0010) {
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vlc = (vlc << 4) | getBits(data, bitf);
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if (vlc < 0x0040) {
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vlc = (vlc << 4) | getBits(data, bitf);
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}
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}
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}
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uint8_t color = vlc & 0x03;
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int len = vlc >> 2;
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// if len == 0 -> end sequence - fill to end of line
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len = len ? : bmpsize.x2 - xp + 1;
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putPixel(xp, yp, len, color);
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xp += len;
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if (xp > bmpsize.x2) {
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// nextLine
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if (!bitf)
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data++;
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bitf = 1;
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xp = bmpsize.x1;
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yp += 2;
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if (yp > bmpsize.y2)
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return;
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}
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}
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}
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// --- cDvbSpuDecoder-----------------------------
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#define CMD_SPU_MENU 0x00
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#define CMD_SPU_SHOW 0x01
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#define CMD_SPU_HIDE 0x02
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#define CMD_SPU_SET_PALETTE 0x03
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#define CMD_SPU_SET_ALPHA 0x04
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#define CMD_SPU_SET_SIZE 0x05
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#define CMD_SPU_SET_PXD_OFFSET 0x06
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#define CMD_SPU_EOF 0xff
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#define spuU32(i) ((spu[i] << 8) + spu[i+1])
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cDvbSpuDecoder::cDvbSpuDecoder()
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{
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clean = true;
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scaleMode = eSpuNormal;
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spu = NULL;
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osd = NULL;
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spubmp = NULL;
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}
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cDvbSpuDecoder::~cDvbSpuDecoder()
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{
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delete spubmp;
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delete spu;
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delete osd;
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}
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void cDvbSpuDecoder::processSPU(uint32_t pts, uint8_t * buf)
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{
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setTime(pts);
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DEBUG("SPU pushData: pts: %d\n", pts);
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delete spubmp;
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spubmp = NULL;
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delete[]spu;
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spu = buf;
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DCSQ_offset = cmdOffs();
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prev_DCSQ_offset = 0;
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clean = true;
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}
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void cDvbSpuDecoder::setScaleMode(cSpuDecoder::eScaleMode ScaleMode)
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{
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scaleMode = ScaleMode;
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}
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void cDvbSpuDecoder::setPalette(uint32_t * pal)
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{
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palette.setPalette(pal);
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}
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void cDvbSpuDecoder::setHighlight(uint16_t sx, uint16_t sy,
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uint16_t ex, uint16_t ey,
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uint32_t palette)
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{
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aDvbSpuPalDescr pld;
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for (int i = 0; i < 4; i++) {
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pld[i].index = 0xf & (palette >> (16 + 4 * i));
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pld[i].trans = 0xf & (palette >> (4 * i));
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}
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bool ne = hlpsize.x1 != sx || hlpsize.y1 != sy ||
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hlpsize.x2 != ex || hlpsize.y2 != ey ||
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pld[0] != hlpDescr[0] || pld[1] != hlpDescr[1] ||
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pld[2] != hlpDescr[2] || pld[3] != hlpDescr[3];
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if (ne) {
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DEBUG("setHighlight: %d,%d x %d,%d\n", sx, sy, ex, ey);
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hlpsize.x1 = sx;
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hlpsize.y1 = sy;
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hlpsize.x2 = ex;
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hlpsize.y2 = ey;
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memcpy(hlpDescr, pld, sizeof(aDvbSpuPalDescr));
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highlight = true;
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clean = false;
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}
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}
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void cDvbSpuDecoder::clearHighlight(void)
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{
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clean &= !highlight;
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highlight = false;
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}
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int cDvbSpuDecoder::ScaleYcoord(int value)
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{
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if (scaleMode == eSpuLetterBox)
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return lround((value * 3.0) / 4.0 + 72.0);
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else
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return value;
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}
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int cDvbSpuDecoder::ScaleYres(int value)
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{
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if (scaleMode == eSpuLetterBox)
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return lround((value * 3.0) / 4.0);
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else
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return value;
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}
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void cDvbSpuDecoder::DrawBmp(sDvbSpuRect & size, cBitmap * bmp)
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{
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osd->Create(size.x1, size.y1, size.width(), size.height(), 2, false);
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osd->SetBitmap(size.x1, size.y1, *bmp);
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delete bmp;
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}
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void cDvbSpuDecoder::Draw(void)
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{
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Hide();
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if (!spubmp)
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return;
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cBitmap *fg = NULL;
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cBitmap *bg = NULL;
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sDvbSpuRect bgsize;
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sDvbSpuRect hlsize;
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hlsize.x1 = hlpsize.x1;
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hlsize.y1 = ScaleYcoord(hlpsize.y1);
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hlsize.x2 = hlpsize.x2;
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hlsize.y2 = ScaleYcoord(hlpsize.y2);
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if (highlight)
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fg = spubmp->getBitmap(hlpDescr, palette, hlsize);
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if (spubmp->getMinSize(palDescr, bgsize)) {
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bg = spubmp->getBitmap(palDescr, palette, bgsize);
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if (scaleMode == eSpuLetterBox) {
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// the coordinates have to be modified for letterbox
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int y1 = ScaleYres(bgsize.y1) + bgsize.height();
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bgsize.y2 = y1 + bgsize.height();
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bgsize.y1 = y1;
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}
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}
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if (bg || fg) {
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if (osd == NULL)
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if ((osd = cOsd::OpenRaw(0, 0)) == NULL) {
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dsyslog("OpenRaw failed\n");
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return;
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}
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if (fg)
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DrawBmp(hlsize, fg);
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if (bg)
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DrawBmp(bgsize, bg);
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osd->Flush();
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}
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clean = true;
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}
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void cDvbSpuDecoder::Hide(void)
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{
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delete osd;
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osd = NULL;
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}
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void cDvbSpuDecoder::Empty(void)
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{
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Hide();
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delete spubmp;
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spubmp = NULL;
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delete[]spu;
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spu = NULL;
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clearHighlight();
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clean = true;
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}
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int cDvbSpuDecoder::setTime(uint32_t pts)
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{
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if (!spu)
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return 0;
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if (spu && !clean)
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Draw();
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while (DCSQ_offset != prev_DCSQ_offset) { /* Display Control Sequences */
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int i = DCSQ_offset;
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state = spNONE;
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uint32_t exec_time = pts + spuU32(i) * 1024;
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if ((pts != 0) && (exec_time > pts))
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return 0;
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DEBUG("offs = %d, rel = %d, time = %d, pts = %d, diff = %d\n",
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i, spuU32(i) * 1024, exec_time, pts, exec_time - pts);
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if (pts != 0) {
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uint16_t feven = 0;
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uint16_t fodd = 0;
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i += 2;
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prev_DCSQ_offset = DCSQ_offset;
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DCSQ_offset = spuU32(i);
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DEBUG("offs = %d, DCSQ = %d\n", i, DCSQ_offset);
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i += 2;
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while (spu[i] != CMD_SPU_EOF) { // Command Sequence
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switch (spu[i]) {
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case CMD_SPU_SHOW: // show subpicture
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DEBUG("\tshow subpicture\n");
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state = spSHOW;
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i++;
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break;
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case CMD_SPU_HIDE: // hide subpicture
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DEBUG("\thide subpicture\n");
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state = spHIDE;
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i++;
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break;
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case CMD_SPU_SET_PALETTE: // CLUT
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palDescr[0].index = spu[i + 2] & 0xf;
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palDescr[1].index = spu[i + 2] >> 4;
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palDescr[2].index = spu[i + 1] & 0xf;
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palDescr[3].index = spu[i + 1] >> 4;
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i += 3;
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break;
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case CMD_SPU_SET_ALPHA: // transparency palette
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palDescr[0].trans = spu[i + 2] & 0xf;
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palDescr[1].trans = spu[i + 2] >> 4;
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palDescr[2].trans = spu[i + 1] & 0xf;
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palDescr[3].trans = spu[i + 1] >> 4;
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i += 3;
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break;
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case CMD_SPU_SET_SIZE: // image coordinates
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size.x1 = (spu[i + 1] << 4) | (spu[i + 2] >> 4);
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size.x2 = ((spu[i + 2] & 0x0f) << 8) | spu[i + 3];
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size.y1 = (spu[i + 4] << 4) | (spu[i + 5] >> 4);
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size.y2 = ((spu[i + 5] & 0x0f) << 8) | spu[i + 6];
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DEBUG("\t(%d, %d) x (%d, %d)\n",
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size.x1, size.y1, size.x2, size.y2);
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i += 7;
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break;
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case CMD_SPU_SET_PXD_OFFSET: // image 1 / image 2 offsets
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fodd = spuU32(i + 1);
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feven = spuU32(i + 3);
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DEBUG("\todd = %d even = %d\n", fodd, feven);
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i += 5;
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break;
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case CMD_SPU_MENU:
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DEBUG("\tspu menu\n");
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state = spMENU;
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i++;
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break;
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default:
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esyslog("invalid sequence in control header (%.2x)\n",
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spu[i]);
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assert(0);
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i++;
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break;
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}
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}
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if (fodd != 0 && feven != 0) {
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delete spubmp;
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spubmp = new cDvbSpuBitmap(size, spu + fodd, spu + feven,
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spu + feven, spu + cmdOffs());
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}
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} else if (!clean)
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state = spSHOW;
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if (state == spSHOW || state == spMENU)
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Draw();
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if (state == spHIDE)
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Hide();
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|
if (pts == 0)
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|