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-rw-r--r--scumm/akos.cpp397
-rw-r--r--scumm/akos.h7
2 files changed, 401 insertions, 3 deletions
diff --git a/scumm/akos.cpp b/scumm/akos.cpp
index 729ffd8669..acbb5be8a1 100644
--- a/scumm/akos.cpp
+++ b/scumm/akos.cpp
@@ -1068,11 +1068,402 @@ void AkosRenderer::codec5()
}
}
-void AkosRenderer::codec16()
-{
- warning("akos_codec16: not implemented");
+static int32 akos16_shadow_mode;
+static byte akos16_unk5;
+static int32 akos16_unk6;
+static int32 akos16_mask;
+static int32 akos16_headervalue;
+static byte akos16_shift;
+static int32 akos16_bits;
+static int32 akos16_numbits;
+static byte * akos16_dataptr;
+static int32 _bitMask[] = {0, 1, 3, 7, 15, 31, 127, 255};
+static byte akos16_buffer[336];
+
+void AkosRenderer::akos16SetupBitReader(byte *src) {
+ akos16_unk5 = 0;
+ akos16_numbits = 16;
+ akos16_mask = _bitMask[*(src)];
+ akos16_shift = *(src);
+ akos16_headervalue = *(src + 1);
+ akos16_bits = (*(src + 2) | *(src + 3) << 8);
+ akos16_dataptr = src + 4;
+}
+
+void AkosRenderer::akos16PutOnScreen(byte * dest, byte * src, int32 transparency, int32 count) {
+ byte tmp_data;
+
+ if (shadow_mode == 0) {
+ for(;;) {
+ if (count-- == 0)
+ return;
+ tmp_data = *(src++);
+ if (tmp_data != transparency) {
+ *(dest) = tmp_data;
+ }
+ dest++;
+ }
+ }
+
+ if (shadow_mode == 1) {
+ for (;;) {
+ if (count-- == 0)
+ return;
+ tmp_data = *(src++);
+ if (tmp_data != transparency) {
+ if (tmp_data == 13) {
+ tmp_data = shadow_table[*(dest)];
+ }
+ *(dest) = tmp_data;
+ }
+ dest++;
+ }
+ }
+
+ if (shadow_mode == 3) {
+ for (;;) {
+ if (count-- == 0)
+ return;
+ tmp_data = *(src++);
+ if (tmp_data != transparency) {
+ if (tmp_data >= 8) {
+ tmp_data = shadow_table[*(dest) + (tmp_data << 8)];
+ }
+ *(dest) = tmp_data;
+ }
+ dest++;
+ }
+ }
}
+void AkosRenderer::akos16SkipData(int32 numskip) {
+ int32 bits, tmp_bits;
+
+ if (numskip != 0) {
+ for(;;) {
+ numskip--;
+ if (akos16_unk5 == 0) {
+ if (akos16_numbits <= 8) {
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ }
+ bits = akos16_bits & 3;
+ if (bits != 1) {
+ akos16_bits >>= 2;
+ akos16_numbits -= 2;
+ if (bits != 2) {
+ tmp_bits = akos16_bits & 7;
+ akos16_numbits -= 3;
+ akos16_bits >>= 3;
+ if (tmp_bits != 4) {
+ akos16_headervalue = tmp_bits - 4;
+ goto label1;
+ }
+ akos16_unk5 = 1;
+ if (akos16_numbits <= 8) {
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ }
+ akos16_unk6= (akos16_bits & 0xff) - 1;
+ akos16_bits >>= 8;
+ akos16_numbits -= 8;
+ if (akos16_numbits > 8)
+ goto label1;
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ goto label1;
+ }
+ if (akos16_numbits <= 8) {
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ }
+ akos16_headervalue = akos16_bits & akos16_mask;
+ akos16_bits >>= akos16_shift;
+ akos16_numbits -= akos16_shift;
+ if (akos16_numbits > 8)
+ goto label1;
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ goto label1;
+ }
+ akos16_bits >>= 1;
+ akos16_numbits--;
+ goto label1;
+ }
+ akos16_unk6--;
+ if (akos16_unk6 == 0) {
+ akos16_unk5 = 0;
+ }
+label1:
+ if (numskip == 0)
+ break;
+ }
+ }
+}
+
+void AkosRenderer::akos16DecodeLine(byte *buf, int32 numbytes, int32 dir) {
+ int32 bits, tmp_bits;
+
+ if (numbytes != 0) {
+ for(;;) {
+ numbytes--;
+ *buf = (byte)akos16_headervalue;
+ buf += dir;
+ if (akos16_unk5 == 0) {
+ if (akos16_numbits <= 8) {
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ }
+ bits = akos16_bits & 3;
+ if (bits != 1) {
+ akos16_bits >>= 2;
+ akos16_numbits -= 2;
+ if (bits != 2) {
+ tmp_bits = akos16_bits & 7;
+ akos16_numbits -= 3;
+ akos16_bits >>= 3;
+ if (tmp_bits != 4) {
+ akos16_headervalue = tmp_bits - 4;
+ goto label1;
+ }
+ akos16_unk5 = 1;
+ if (akos16_numbits <= 8) {
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ }
+ akos16_unk6= (akos16_bits & 0xff) - 1;
+ akos16_bits >>= 8;
+ akos16_numbits -= 8;
+ if (akos16_numbits > 8)
+ goto label1;
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ goto label1;
+ }
+ if (akos16_numbits <= 8) {
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ }
+ akos16_headervalue = akos16_bits & akos16_mask;
+ akos16_bits >>= akos16_shift;
+ akos16_numbits -= akos16_shift;
+ if (akos16_numbits > 8)
+ goto label1;
+ akos16_bits |= (*akos16_dataptr++) << akos16_numbits;
+ akos16_numbits += 8;
+ goto label1;
+ }
+ akos16_bits >>= 1;
+ akos16_numbits--;
+ goto label1;
+ }
+ akos16_unk6--;
+ if (akos16_unk6 == 0) {
+ akos16_unk5 = 0;
+ }
+label1:
+ if (numbytes == 0)
+ break;
+ }
+ }
+}
+
+void AkosRenderer::akos16ApplyMask(byte * dest, byte * maskptr, int32 bits, int32 count, int32 fillwith) {
+ int32 tmp;
+ byte tmp_data = *(maskptr);
+ byte bitpos = 1 << (7 - bits);
+ maskptr++;
+
+ for(;;) {
+ tmp = tmp_data;
+ do {
+ if(count-- == 0)
+ return;
+
+ if (tmp != bitpos) {
+ *(dest) = (byte)fillwith;
+ }
+
+ bitpos >>= 1;
+ dest++;
+
+ } while (bitpos != 0);
+
+ bitpos = 0x80;
+ tmp_data = *(maskptr++);
+ }
+}
+
+void AkosRenderer::akos16Decompress(byte * dest, int32 pitch, byte * src, int32 width, int32 height, int32 dir, int32 numskip_before, int32 numskip_after, byte transparency) {
+ byte * tmp_buf = akos16_buffer;
+
+ if (dir < 0) {
+ dest -= (width - 1);
+ tmp_buf += (width - 1);
+ }
+
+ akos16SetupBitReader(src);
+
+ if (numskip_before != 0) {
+ akos16SkipData(numskip_before);
+ }
+
+ for (;;) {
+ if (height-- == 0)
+ return;
+
+ akos16DecodeLine(tmp_buf, width, dir);
+ akos16PutOnScreen(dest, akos16_buffer, transparency, width);
+
+ if (numskip_after != 0) {
+ akos16SkipData(numskip_after);
+ }
+ dest += pitch;
+ }
+}
+
+void AkosRenderer::akos16DecompressMask(byte * dest, int32 pitch, byte * src, int32 width, int32 height, int32 dir, int32 numskip_before, int32 numskip_after, byte transparency, byte * maskptr, int32 bitpos_start) {
+ byte * tmp_buf = akos16_buffer;
+
+ if (dir < 0) {
+ dest -= (width - 1);
+ tmp_buf += (width - 1);
+ }
+
+ akos16SetupBitReader(src);
+
+ if (numskip_before != 0) {
+ akos16SkipData(numskip_before);
+ }
+
+ for (;;) {
+ if (height-- == 0)
+ return;
+
+ akos16DecodeLine(tmp_buf, width, dir);
+ akos16ApplyMask(akos16_buffer, maskptr, bitpos_start, width, transparency);
+ akos16PutOnScreen(dest, akos16_buffer, transparency, width);
+
+ if (numskip_after != 0) {
+ akos16SkipData(numskip_after);
+ }
+ dest += pitch;
+ maskptr += (g_scumm->_realWidth / 8) + 1;
+ }
+}
+
+void AkosRenderer::codec16() {
+ warning("akos_codec16");
+
+ int32 clip_left;
+
+ if(!mirror) {
+ clip_left = (x - move_x_cur - width) + 1;
+ }
+ else {
+ clip_left = x + move_x_cur;
+ }
+
+ int32 clip_top = move_y_cur + y;
+ int32 clip_right = (clip_left + width) - 1;
+ int32 clip_bottom = (clip_top + height) - 1;
+ int32 skip_x = 0;
+ int32 skip_y = 0;
+ int32 cur_x = width - 1;
+ int32 cur_y = height - 1;
+ int32 maxw = outwidth - 1;
+ int32 maxh = outheight - 1;
+ int32 tmp_x, tmp_y;
+
+ tmp_x = clip_left;
+ if(tmp_x < 0) {
+ skip_x = tmp_x;
+ clip_left -= tmp_x;
+ skip_x = !skip_x;
+ }
+
+ tmp_x = clip_right - maxw;
+ if(tmp_x > 0) {
+ cur_x -= tmp_x;
+ clip_right -= tmp_x;
+ }
+
+ tmp_y = clip_top;
+ if(tmp_y < 0) {
+ skip_y -= tmp_y;
+ clip_top -= tmp_y;
+ }
+
+ tmp_y = clip_bottom - maxh;
+ if(tmp_y > 0) {
+ cur_y -= tmp_y;
+ clip_bottom -= tmp_y;
+ }
+
+ if((clip_left >= clip_right) || (clip_top >= clip_bottom))
+ return;
+
+ _vm->updateDirtyRect(0, clip_left, clip_right + 1, clip_top, clip_bottom + 1, 1 << dirty_id);
+
+// if(clip_top < Actor.top) {
+// Actor.top = clip_top;
+// }
+
+// if(clip_bottom > Actor.bottom) {
+// Actor.bottom = clip_bottom + 1;
+// }
+
+ int32 width_unk, height_unk;
+
+ height_unk = clip_top;
+ int32 pitch = _vm->_realWidth;
+
+ int32 tmp1, tmp2, tmp3, dir;
+
+ if (mirror != 0) {
+ dir = -1;
+ tmp2 = cur_x;
+ cur_x = skip_x;
+ tmp1 = width - 1;
+ tmp3 = tmp1;
+ tmp3 -= tmp2;
+ width_unk = clip_right;
+ skip_x = tmp1 - tmp2;
+ cur_x = tmp1;
+ } else {
+ dir = 1;
+ width_unk = clip_left;
+ }
+
+ tmp_y = cur_y - skip_y;
+ if(tmp_y < 0) {
+ tmp_y = !tmp_y;
+ }
+
+ tmp_y++;
+ int32 out_height = tmp_y;
+ cur_x -= skip_x;
+
+ if(cur_x < 0) {
+ cur_x = !cur_x;
+ }
+
+ cur_x++;
+ int32 out_width = cur_x;
+
+ int32 numskip_before = skip_x + (skip_y * width);
+ int32 numskip_after = width - out_width;
+
+ byte * dest = outptr + width_unk + height_unk * _vm->_realWidth;
+
+ if (clipping == 0) {
+ akos16Decompress(dest, pitch, srcptr, out_width, out_height, dir, numskip_before, numskip_after, 255);
+ return;
+ }
+
+ byte * ptr = _vm->_screenStartStrip + _vm->getResourceAddress(rtBuffer, 9) + _vm->gdi._imgBufOffs[clipping] + ((_vm->_realWidth / 8) + 1) * clip_top + (clip_left / 8);
+ akos16DecompressMask(dest, pitch, srcptr, out_width, out_height, dir, numskip_before, numskip_after, 255, ptr, clip_left / 8);
+}
bool Scumm::akos_increaseAnims(byte *akos, Actor *a)
{
diff --git a/scumm/akos.h b/scumm/akos.h
index d24f4b48bc..025a26c187 100644
--- a/scumm/akos.h
+++ b/scumm/akos.h
@@ -125,6 +125,13 @@ public:
void codec1_ignorePakCols(int num);
void c1_spec2();
void c1_spec3();
+ void akos16SetupBitReader(byte *src);
+ void akos16PutOnScreen(byte * dest, byte * src, int32 transparency, int32 count);
+ void akos16SkipData(int32 numskip);
+ void akos16DecodeLine(byte *buf, int32 numbytes, int32 dir);
+ void akos16ApplyMask(byte * dest, byte * maskptr, int32 bits, int32 count, int32 fillwith);
+ void akos16Decompress(byte * dest, int32 pitch, byte * src, int32 width, int32 height, int32 dir, int32 numskip_before, int32 numskip_after, byte transparency);
+ void akos16DecompressMask(byte * dest, int32 pitch, byte * src, int32 width, int32 height, int32 dir, int32 numskip_before, int32 numskip_after, byte transparency, byte * maskptr, int32 bitpos_start);
};
enum AkosOpcodes {
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-14 01:36:23 +0000