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Diffstat (limited to 'graphics/video/codecs/qtrle.cpp')
-rw-r--r--graphics/video/codecs/qtrle.cpp421
1 files changed, 0 insertions, 421 deletions
diff --git a/graphics/video/codecs/qtrle.cpp b/graphics/video/codecs/qtrle.cpp
deleted file mode 100644
index 380b89903c..0000000000
--- a/graphics/video/codecs/qtrle.cpp
+++ /dev/null
@@ -1,421 +0,0 @@
-/* ScummVM - Graphic Adventure Engine
- *
- * ScummVM is the legal property of its developers, whose names
- * are too numerous to list here. Please refer to the COPYRIGHT
- * file distributed with this source distribution.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
-
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
-
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- *
- * $URL$
- * $Id$
- *
- */
-
-// QuickTime RLE Decoder
-// Based off ffmpeg's QuickTime RLE decoder (written by Mike Melanson)
-
-#include "graphics/video/codecs/qtrle.h"
-
-#include "common/scummsys.h"
-#include "common/stream.h"
-#include "common/system.h"
-#include "graphics/colormasks.h"
-#include "graphics/surface.h"
-
-namespace Graphics {
-
-QTRLEDecoder::QTRLEDecoder(uint16 width, uint16 height, byte bitsPerPixel) : Codec() {
- _bitsPerPixel = bitsPerPixel;
- _pixelFormat = g_system->getScreenFormat();
-
- // We need to increase the surface size to a multiple of 4
- uint16 wMod = width % 4;
- if(wMod != 0)
- width += 4 - wMod;
-
- debug(2, "QTRLE corrected width: %d", width);
-
- _surface = new Surface();
- _surface->create(width, height, _bitsPerPixel <= 8 ? 1 : _pixelFormat.bytesPerPixel);
-}
-
-#define CHECK_STREAM_PTR(n) \
- if ((stream->pos() + n) > stream->size()) { \
- warning ("Problem: stream out of bounds (%d >= %d)", stream->pos() + n, stream->size()); \
- return; \
- }
-
-#define CHECK_PIXEL_PTR(n) \
- if ((int32)pixelPtr + n > _surface->w * _surface->h) { \
- warning ("Problem: pixel ptr = %d, pixel limit = %d", pixelPtr + n, _surface->w * _surface->h); \
- return; \
- } \
-
-void QTRLEDecoder::decode1(Common::SeekableReadStream *stream, uint32 rowPtr, uint32 linesToChange) {
- uint32 pixelPtr = 0;
- byte *rgb = (byte *)_surface->pixels;
-
- while (linesToChange) {
- CHECK_STREAM_PTR(2);
- byte skip = stream->readByte();
- int8 rleCode = stream->readSByte();
-
- if (rleCode == 0)
- break;
-
- if (skip & 0x80) {
- linesToChange--;
- rowPtr += _surface->w;
- pixelPtr = rowPtr + 2 * (skip & 0x7f);
- } else
- pixelPtr += 2 * skip;
-
- if (rleCode < 0) {
- // decode the run length code
- rleCode = -rleCode;
- // get the next 2 bytes from the stream, treat them as groups of 8 pixels, and output them rleCode times */
- CHECK_STREAM_PTR(2);
- byte pi0 = stream->readByte();
- byte pi1 = stream->readByte();
- CHECK_PIXEL_PTR(rleCode * 2);
-
- while (rleCode--) {
- rgb[pixelPtr++] = pi0;
- rgb[pixelPtr++] = pi1;
- }
- } else {
- // copy the same pixel directly to output 2 times
- rleCode *= 2;
- CHECK_STREAM_PTR(rleCode);
- CHECK_PIXEL_PTR(rleCode);
-
- while (rleCode--)
- rgb[pixelPtr++] = stream->readByte();
- }
- }
-}
-
-void QTRLEDecoder::decode2_4(Common::SeekableReadStream *stream, uint32 rowPtr, uint32 linesToChange, byte bpp) {
- uint32 pixelPtr = 0;
- byte *rgb = (byte *)_surface->pixels;
- byte numPixels = (bpp == 4) ? 8 : 16;
-
- while (linesToChange--) {
- CHECK_STREAM_PTR(2);
- pixelPtr = rowPtr + (numPixels * (stream->readByte() - 1));
-
- for (int8 rleCode = stream->readSByte(); rleCode != -1; rleCode = stream->readSByte()) {
- if (rleCode == 0) {
- // there's another skip code in the stream
- CHECK_STREAM_PTR(1);
- pixelPtr += (numPixels * (stream->readByte() - 1));
- } else if (rleCode < 0) {
- // decode the run length code
- rleCode = -rleCode;
-
- // get the next 4 bytes from the stream, treat them as palette indices, and output them rleCode times */
- CHECK_STREAM_PTR(4);
-
- byte pi[16]; // 16 palette indices
-
- for (int8 i = numPixels - 1; i >= 0; i--) {
- pi[numPixels - 1 - i] = (stream->readByte() >> ((i * bpp) & 0x07)) & ((1 << bpp) - 1);
-
- // FIXME: Is this right?
- //stream_ptr += ((i & ((num_pixels>>2)-1)) == 0);
- if ((i & ((numPixels >> 2) - 1)) == 0)
- stream->readByte();
- }
-
- CHECK_PIXEL_PTR(rleCode * numPixels);
-
- while (rleCode--)
- for (byte i = 0; i < numPixels; i++)
- rgb[pixelPtr++] = pi[i];
- } else {
- // copy the same pixel directly to output 4 times
- rleCode *= 4;
- CHECK_STREAM_PTR(rleCode);
- CHECK_PIXEL_PTR(rleCode * (numPixels >> 2));
-
- while (rleCode--) {
- byte temp = stream->readByte();
- if (bpp == 4) {
- rgb[pixelPtr++] = (temp >> 4) & 0x0f;
- rgb[pixelPtr++] = temp & 0x0f;
- } else {
- rgb[pixelPtr++] = (temp >> 6) & 0x03;
- rgb[pixelPtr++] = (temp >> 4) & 0x03;
- rgb[pixelPtr++] = (temp >> 2) & 0x03;
- rgb[pixelPtr++] = temp & 0x03;
- }
- }
- }
- }
-
- rowPtr += _surface->w;
- }
-}
-
-void QTRLEDecoder::decode8(Common::SeekableReadStream *stream, uint32 rowPtr, uint32 linesToChange) {
- uint32 pixelPtr = 0;
- byte *rgb = (byte *)_surface->pixels;
-
- while (linesToChange--) {
- CHECK_STREAM_PTR(2);
- pixelPtr = rowPtr + 4 * (stream->readByte() - 1);
-
- for (int8 rleCode = stream->readSByte(); rleCode != -1; rleCode = stream->readSByte()) {
- if (rleCode == 0) {
- // there's another skip code in the stream
- CHECK_STREAM_PTR(1);
- pixelPtr += 4 * (stream->readByte() - 1);
- } else if (rleCode < 0) {
- // decode the run length code
- rleCode = -rleCode;
-
- // get the next 4 bytes from the stream, treat them as palette indices, and output them rleCode times
- CHECK_STREAM_PTR(4);
-
- byte pi[4]; // 4 palette indexes
-
- for (byte i = 0; i < 4; i++)
- pi[i] = stream->readByte();
-
- CHECK_PIXEL_PTR(rleCode * 4);
-
- while (rleCode--)
- for (byte i = 0; i < 4; i++)
- rgb[pixelPtr++] = pi[i];
- } else {
- // copy the same pixel directly to output 4 times
- rleCode *= 4;
- CHECK_STREAM_PTR(rleCode);
- CHECK_PIXEL_PTR(rleCode);
-
- while (rleCode--)
- rgb[pixelPtr++] = stream->readByte();
- }
- }
-
- rowPtr += _surface->w;
- }
-}
-
-void QTRLEDecoder::decode16(Common::SeekableReadStream *stream, uint32 rowPtr, uint32 linesToChange) {
- uint32 pixelPtr = 0;
- OverlayColor *rgb = (OverlayColor *)_surface->pixels;
-
- while (linesToChange--) {
- CHECK_STREAM_PTR(2);
- pixelPtr = rowPtr + stream->readByte() - 1;
-
- for (int8 rleCode = stream->readSByte(); rleCode != -1; rleCode = stream->readSByte()) {
- if (rleCode == 0) {
- // there's another skip code in the stream
- CHECK_STREAM_PTR(1);
- pixelPtr += stream->readByte() - 1;
- } else if (rleCode < 0) {
- // decode the run length code
- rleCode = -rleCode;
- CHECK_STREAM_PTR(2);
-
- uint16 rgb16 = stream->readUint16BE();
-
- CHECK_PIXEL_PTR(rleCode);
-
- while (rleCode--) {
- // Convert from RGB555 to the format specified by the Overlay
- byte r = 0, g = 0, b = 0;
- colorToRGB<ColorMasks<555> >(rgb16, r, g, b);
- rgb[pixelPtr++] = _pixelFormat.RGBToColor(r, g, b);
- }
- } else {
- CHECK_STREAM_PTR(rleCode * 2);
- CHECK_PIXEL_PTR(rleCode);
-
- // copy pixels directly to output
- while (rleCode--) {
- uint16 rgb16 = stream->readUint16BE();
-
- // Convert from RGB555 to the format specified by the Overlay
- byte r = 0, g = 0, b = 0;
- colorToRGB<ColorMasks<555> >(rgb16, r, g, b);
- rgb[pixelPtr++] = _pixelFormat.RGBToColor(r, g, b);
- }
- }
- }
-
- rowPtr += _surface->w;
- }
-}
-
-void QTRLEDecoder::decode24(Common::SeekableReadStream *stream, uint32 rowPtr, uint32 linesToChange) {
- uint32 pixelPtr = 0;
- OverlayColor *rgb = (OverlayColor *)_surface->pixels;
-
- while (linesToChange--) {
- CHECK_STREAM_PTR(2);
- pixelPtr = rowPtr + stream->readByte() - 1;
-
- for (int8 rleCode = stream->readSByte(); rleCode != -1; rleCode = stream->readSByte()) {
- if (rleCode == 0) {
- // there's another skip code in the stream
- CHECK_STREAM_PTR(1);
- pixelPtr += stream->readByte() - 1;
- } else if (rleCode < 0) {
- // decode the run length code
- rleCode = -rleCode;
-
- CHECK_STREAM_PTR(3);
-
- byte r = stream->readByte();
- byte g = stream->readByte();
- byte b = stream->readByte();
-
- CHECK_PIXEL_PTR(rleCode);
-
- while (rleCode--)
- rgb[pixelPtr++] = _pixelFormat.RGBToColor(r, g, b);
- } else {
- CHECK_STREAM_PTR(rleCode * 3);
- CHECK_PIXEL_PTR(rleCode);
-
- // copy pixels directly to output
- while (rleCode--) {
- byte r = stream->readByte();
- byte g = stream->readByte();
- byte b = stream->readByte();
- rgb[pixelPtr++] = _pixelFormat.RGBToColor(r, g, b);
- }
- }
- }
-
- rowPtr += _surface->w;
- }
-}
-
-void QTRLEDecoder::decode32(Common::SeekableReadStream *stream, uint32 rowPtr, uint32 linesToChange) {
- uint32 pixelPtr = 0;
- OverlayColor *rgb = (OverlayColor *)_surface->pixels;
-
- while (linesToChange--) {
- CHECK_STREAM_PTR(2);
- pixelPtr = rowPtr + stream->readByte() - 1;
-
- for (int8 rleCode = stream->readSByte(); rleCode != -1; rleCode = stream->readSByte()) {
- if (rleCode == 0) {
- // there's another skip code in the stream
- CHECK_STREAM_PTR(1);
- pixelPtr += stream->readByte() - 1;
- } else if (rleCode < 0) {
- // decode the run length code
- rleCode = -rleCode;
-
- CHECK_STREAM_PTR(4);
-
- byte a = stream->readByte();
- byte r = stream->readByte();
- byte g = stream->readByte();
- byte b = stream->readByte();
-
- CHECK_PIXEL_PTR(rleCode);
-
- while (rleCode--)
- rgb[pixelPtr++] = _pixelFormat.ARGBToColor(a, r, g, b);
- } else {
- CHECK_STREAM_PTR(rleCode * 4);
- CHECK_PIXEL_PTR(rleCode);
-
- // copy pixels directly to output
- while (rleCode--) {
- byte a = stream->readByte();
- byte r = stream->readByte();
- byte g = stream->readByte();
- byte b = stream->readByte();
- rgb[pixelPtr++] = _pixelFormat.ARGBToColor(a, r, g, b);
- }
- }
- }
-
- rowPtr += _surface->w;
- }
-}
-
-const Surface *QTRLEDecoder::decodeImage(Common::SeekableReadStream *stream) {
- uint16 start_line = 0;
- uint16 height = _surface->h;
-
- // check if this frame is even supposed to change
- if (stream->size() < 8)
- return _surface;
-
- // start after the chunk size
- stream->readUint32BE();
-
- // fetch the header
- uint16 header = stream->readUint16BE();
-
- // if a header is present, fetch additional decoding parameters
- if (header & 8) {
- if(stream->size() < 14)
- return _surface;
- start_line = stream->readUint16BE();
- stream->readUint16BE(); // Unknown
- height = stream->readUint16BE();
- stream->readUint16BE(); // Unknown
- }
-
- uint32 row_ptr = _surface->w * start_line;
-
- switch (_bitsPerPixel) {
- case 1:
- case 33:
- decode1(stream, row_ptr, height);
- break;
- case 2:
- case 34:
- decode2_4(stream, row_ptr, height, 2);
- break;
- case 4:
- case 36:
- decode2_4(stream, row_ptr, height, 4);
- break;
- case 8:
- case 40:
- decode8(stream, row_ptr, height);
- break;
- case 16:
- decode16(stream, row_ptr, height);
- break;
- case 24:
- decode24(stream, row_ptr, height);
- break;
- case 32:
- decode32(stream, row_ptr, height);
- break;
- default:
- error ("Unsupported bits per pixel %d", _bitsPerPixel);
- }
-
- return _surface;
-}
-
-QTRLEDecoder::~QTRLEDecoder() {
- _surface->free();
- delete _surface;
-}
-
-} // End of namespace Graphics
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