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https://github.com/Relintai/MemR.git
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Attempt at fixing gif loading.
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parent
5cb1a3ce2f
commit
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@ -103,10 +103,14 @@ func read(source_file):
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img.lock()
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img.lock()
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for y in range(0, img_height):
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for y in range(0, img_height):
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for x in range(0, img_width):
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for x in range(0, img_width):
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if p >= decompressed.size():
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break
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var c = decompressed[p]
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var c = decompressed[p]
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if transparency == 0 or c != frame_transparent_color:
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if transparency == 0 or c != frame_transparent_color:
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img.set_pixel(img_left + x, img_top + y, local_lut[c])
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img.set_pixel(img_left + x, img_top + y, local_lut[c])
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p = p + 1
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p = p + 1
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img.unlock()
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img.unlock()
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var frame = ImageTexture.new()
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var frame = ImageTexture.new()
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frame.create_from_image(img, 0)
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frame.create_from_image(img, 0)
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@ -21,6 +21,12 @@ class CodeEntry:
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for element in self.sequence:
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for element in self.sequence:
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result += str(element) + ", "
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result += str(element) + ", "
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return result.substr(0, result.length() - 2)
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return result.substr(0, result.length() - 2)
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func duplicate():
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var sq : PoolByteArray = PoolByteArray()
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sq.append_array(sequence)
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var ce : CodeEntry = CodeEntry.new(sq)
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return ce
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class CodeTable:
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class CodeTable:
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@ -170,6 +176,9 @@ func decompress_lzw(code_stream_data: PoolByteArray, min_code_size: int, colors:
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var prevcode: int = code
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var prevcode: int = code
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# <LOOP POINT>
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# <LOOP POINT>
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while true:
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while true:
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if binary_code_stream.chunk_stream.size() - binary_code_stream.byte_index <= current_code_size:
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break
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# let CODE be the next code in the code stream
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# let CODE be the next code in the code stream
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code = binary_code_stream.read_bits(current_code_size)
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code = binary_code_stream.read_bits(current_code_size)
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# Detect Clear Code. When detected reset everything and get next code.
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# Detect Clear Code. When detected reset everything and get next code.
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@ -177,6 +186,7 @@ func decompress_lzw(code_stream_data: PoolByteArray, min_code_size: int, colors:
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code_table = initialize_color_code_table(colors)
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code_table = initialize_color_code_table(colors)
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current_code_size = min_code_size + 1
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current_code_size = min_code_size + 1
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code = binary_code_stream.read_bits(current_code_size)
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code = binary_code_stream.read_bits(current_code_size)
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prevcode = code
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elif code == clear_code_index + 1: # Stop when detected EOI Code.
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elif code == clear_code_index + 1: # Stop when detected EOI Code.
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break
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break
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# is CODE in the code table?
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# is CODE in the code table?
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@ -188,18 +198,37 @@ func decompress_lzw(code_stream_data: PoolByteArray, min_code_size: int, colors:
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var k: CodeEntry = CodeEntry.new([code_entry.sequence[0]])
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var k: CodeEntry = CodeEntry.new([code_entry.sequence[0]])
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# warning-ignore:return_value_discarded
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# warning-ignore:return_value_discarded
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# add {PREVCODE} + k to the code table
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# add {PREVCODE} + k to the code table
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code_table.add(code_table.get(prevcode).add(k))
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var prev_code_entry: CodeEntry = code_table.get(prevcode)
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if prev_code_entry:
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prev_code_entry = prev_code_entry.duplicate()
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code_table.add(prev_code_entry.add(k))
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else:
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code_table.add(k)
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# set PREVCODE = CODE
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# set PREVCODE = CODE
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prevcode = code
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prevcode = code
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else: # if NO
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else: # if NO
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# let k be the first index of {PREVCODE}
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# let k be the first index of {PREVCODE}
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var prevcode_entry: CodeEntry = code_table.get(prevcode)
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var prevcode_entry: CodeEntry = code_table.get(prevcode)
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var k: CodeEntry = CodeEntry.new([prevcode_entry.sequence[0]])
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var k: CodeEntry
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if prevcode_entry:
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k = CodeEntry.new([prevcode_entry.sequence[0]])
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else:
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k = CodeEntry.new([ code ])
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# output {PREVCODE} + k to index stream
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# output {PREVCODE} + k to index stream
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index_stream.append_array(prevcode_entry.add(k).sequence)
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if prevcode_entry:
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index_stream.append_array(prevcode_entry.add(k).sequence)
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else:
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index_stream.append_array(k.sequence)
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# add {PREVCODE} + k to code table
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# add {PREVCODE} + k to code table
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# warning-ignore:return_value_discarded
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# warning-ignore:return_value_discarded
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code_table.add(prevcode_entry.add(k))
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if prevcode_entry:
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code_table.add(prevcode_entry.add(k))
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else:
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code_table.add(k)
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# set PREVCODE = CODE
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# set PREVCODE = CODE
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prevcode = code
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prevcode = code
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