diff options
Diffstat (limited to 'lib/python/qmk/painter_qgf.py')
| -rw-r--r-- | lib/python/qmk/painter_qgf.py | 408 |
1 files changed, 408 insertions, 0 deletions
diff --git a/lib/python/qmk/painter_qgf.py b/lib/python/qmk/painter_qgf.py new file mode 100644 index 0000000000..71ce1f5a02 --- /dev/null +++ b/lib/python/qmk/painter_qgf.py @@ -0,0 +1,408 @@ +# Copyright 2021 Nick Brassel (@tzarc) +# SPDX-License-Identifier: GPL-2.0-or-later + +# Quantum Graphics File "QGF" Image File Format. +# See https://docs.qmk.fm/#/quantum_painter_qgf for more information. + +from colorsys import rgb_to_hsv +from types import FunctionType +from PIL import Image, ImageFile, ImageChops +from PIL._binary import o8, o16le as o16, o32le as o32 +import qmk.painter + + +def o24(i): + return o16(i & 0xFFFF) + o8((i & 0xFF0000) >> 16) + + +######################################################################################################################## + + +class QGFBlockHeader: + block_size = 5 + + def write(self, fp): + fp.write(b'' # start off with empty bytes... + + o8(self.type_id) # block type id + + o8((~self.type_id) & 0xFF) # negated block type id + + o24(self.length) # blob length + ) + + +######################################################################################################################## + + +class QGFGraphicsDescriptor: + type_id = 0x00 + length = 18 + magic = 0x464751 + + def __init__(self): + self.header = QGFBlockHeader() + self.header.type_id = QGFGraphicsDescriptor.type_id + self.header.length = QGFGraphicsDescriptor.length + self.version = 1 + self.total_file_size = 0 + self.image_width = 0 + self.image_height = 0 + self.frame_count = 0 + + def write(self, fp): + self.header.write(fp) + fp.write( + b'' # start off with empty bytes... + + o24(QGFGraphicsDescriptor.magic) # magic + + o8(self.version) # version + + o32(self.total_file_size) # file size + + o32((~self.total_file_size) & 0xFFFFFFFF) # negated file size + + o16(self.image_width) # width + + o16(self.image_height) # height + + o16(self.frame_count) # frame count + ) + + +######################################################################################################################## + + +class QGFFrameOffsetDescriptorV1: + type_id = 0x01 + + def __init__(self, frame_count): + self.header = QGFBlockHeader() + self.header.type_id = QGFFrameOffsetDescriptorV1.type_id + self.frame_offsets = [0xFFFFFFFF] * frame_count + self.frame_count = frame_count + + def write(self, fp): + self.header.length = len(self.frame_offsets) * 4 + self.header.write(fp) + for offset in self.frame_offsets: + fp.write(b'' # start off with empty bytes... + + o32(offset) # offset + ) + + +######################################################################################################################## + + +class QGFFrameDescriptorV1: + type_id = 0x02 + length = 6 + + def __init__(self): + self.header = QGFBlockHeader() + self.header.type_id = QGFFrameDescriptorV1.type_id + self.header.length = QGFFrameDescriptorV1.length + self.format = 0xFF + self.flags = 0 + self.compression = 0xFF + self.transparency_index = 0xFF # TODO: Work out how to retrieve the transparent palette entry from the PIL gif loader + self.delay = 1000 # Placeholder until it gets read from the animation + + def write(self, fp): + self.header.write(fp) + fp.write(b'' # start off with empty bytes... + + o8(self.format) # format + + o8(self.flags) # flags + + o8(self.compression) # compression + + o8(self.transparency_index) # transparency index + + o16(self.delay) # delay + ) + + @property + def is_transparent(self): + return (self.flags & 0x01) == 0x01 + + @is_transparent.setter + def is_transparent(self, val): + if val: + self.flags |= 0x01 + else: + self.flags &= ~0x01 + + @property + def is_delta(self): + return (self.flags & 0x02) == 0x02 + + @is_delta.setter + def is_delta(self, val): + if val: + self.flags |= 0x02 + else: + self.flags &= ~0x02 + + +######################################################################################################################## + + +class QGFFramePaletteDescriptorV1: + type_id = 0x03 + + def __init__(self): + self.header = QGFBlockHeader() + self.header.type_id = QGFFramePaletteDescriptorV1.type_id + self.header.length = 0 + self.palette_entries = [(0xFF, 0xFF, 0xFF)] * 4 + + def write(self, fp): + self.header.length = len(self.palette_entries) * 3 + self.header.write(fp) + for entry in self.palette_entries: + fp.write(b'' # start off with empty bytes... + + o8(entry[0]) # h + + o8(entry[1]) # s + + o8(entry[2]) # v + ) + + +######################################################################################################################## + + +class QGFFrameDeltaDescriptorV1: + type_id = 0x04 + length = 8 + + def __init__(self): + self.header = QGFBlockHeader() + self.header.type_id = QGFFrameDeltaDescriptorV1.type_id + self.header.length = QGFFrameDeltaDescriptorV1.length + self.left = 0 + self.top = 0 + self.right = 0 + self.bottom = 0 + + def write(self, fp): + self.header.write(fp) + fp.write(b'' # start off with empty bytes... + + o16(self.left) # left + + o16(self.top) # top + + o16(self.right) # right + + o16(self.bottom) # bottom + ) + + +######################################################################################################################## + + +class QGFFrameDataDescriptorV1: + type_id = 0x05 + + def __init__(self): + self.header = QGFBlockHeader() + self.header.type_id = QGFFrameDataDescriptorV1.type_id + self.data = [] + + def write(self, fp): + self.header.length = len(self.data) + self.header.write(fp) + fp.write(bytes(self.data)) + + +######################################################################################################################## + + +class QGFImageFile(ImageFile.ImageFile): + + format = "QGF" + format_description = "Quantum Graphics File Format" + + def _open(self): + raise NotImplementedError("Reading QGF files is not supported") + + +######################################################################################################################## + + +def _accept(prefix): + """Helper method used by PIL to work out if it can parse an input file. + + Currently unimplemented. + """ + return False + + +def _save(im, fp, filename): + """Helper method used by PIL to write to an output file. + """ + # Work out from the parameters if we need to do anything special + encoderinfo = im.encoderinfo.copy() + append_images = list(encoderinfo.get("append_images", [])) + verbose = encoderinfo.get("verbose", False) + use_deltas = encoderinfo.get("use_deltas", True) + use_rle = encoderinfo.get("use_rle", True) + + # Helper for inline verbose prints + def vprint(s): + if verbose: + print(s) + + # Helper to iterate through all frames in the input image + def _for_all_frames(x: FunctionType): + frame_num = 0 + last_frame = None + for frame in [im] + append_images: + # Get number of of frames in this image + nfr = getattr(frame, "n_frames", 1) + for idx in range(nfr): + frame.seek(idx) + frame.load() + copy = frame.copy().convert("RGB") + x(frame_num, copy, last_frame) + last_frame = copy + frame_num += 1 + + # Collect all the frame sizes + frame_sizes = [] + _for_all_frames(lambda idx, frame, last_frame: frame_sizes.append(frame.size)) + + # Make sure all frames are the same size + if len(list(set(frame_sizes))) != 1: + raise ValueError("Mismatching sizes on frames") + + # Write out the initial graphics descriptor (and write a dummy value), so that we can come back and fill in the + # correct values once we've written all the frames to the output + graphics_descriptor_location = fp.tell() + graphics_descriptor = QGFGraphicsDescriptor() + graphics_descriptor.frame_count = len(frame_sizes) + graphics_descriptor.image_width = frame_sizes[0][0] + graphics_descriptor.image_height = frame_sizes[0][1] + vprint(f'{"Graphics descriptor block":26s} {fp.tell():5d}d / {fp.tell():04X}h') + graphics_descriptor.write(fp) + + # Work out the frame offset descriptor location (and write a dummy value), so that we can come back and fill in the + # correct offsets once we've written all the frames to the output + frame_offset_location = fp.tell() + frame_offsets = QGFFrameOffsetDescriptorV1(graphics_descriptor.frame_count) + vprint(f'{"Frame offsets block":26s} {fp.tell():5d}d / {fp.tell():04X}h') + frame_offsets.write(fp) + + # Helper function to save each frame to the output file + def _write_frame(idx, frame, last_frame): + # If we replace the frame we're going to output with a delta, we can override it here + this_frame = frame + location = (0, 0) + size = frame.size + + # Work out the format we're going to use + format = encoderinfo["qmk_format"] + + # Convert the original frame so we can do comparisons + converted = qmk.painter.convert_requested_format(this_frame, format) + graphic_data = qmk.painter.convert_image_bytes(converted, format) + + # Convert the raw data to RLE-encoded if requested + raw_data = graphic_data[1] + if use_rle: + rle_data = qmk.painter.compress_bytes_qmk_rle(graphic_data[1]) + use_raw_this_frame = not use_rle or len(raw_data) <= len(rle_data) + image_data = raw_data if use_raw_this_frame else rle_data + + # Work out if a delta frame is smaller than injecting it directly + use_delta_this_frame = False + if use_deltas and last_frame is not None: + # If we want to use deltas, then find the difference + diff = ImageChops.difference(frame, last_frame) + + # Get the bounding box of those differences + bbox = diff.getbbox() + + # If we have a valid bounding box... + if bbox: + # ...create the delta frame by cropping the original. + delta_frame = frame.crop(bbox) + delta_location = (bbox[0], bbox[1]) + delta_size = (bbox[2] - bbox[0], bbox[3] - bbox[1]) + + # Convert the delta frame to the requested format + delta_converted = qmk.painter.convert_requested_format(delta_frame, format) + delta_graphic_data = qmk.painter.convert_image_bytes(delta_converted, format) + + # Work out how large the delta frame is going to be with compression etc. + delta_raw_data = delta_graphic_data[1] + if use_rle: + delta_rle_data = qmk.painter.compress_bytes_qmk_rle(delta_graphic_data[1]) + delta_use_raw_this_frame = not use_rle or len(delta_raw_data) <= len(delta_rle_data) + delta_image_data = delta_raw_data if delta_use_raw_this_frame else delta_rle_data + + # If the size of the delta frame (plus delta descriptor) is smaller than the original, use that instead + # This ensures that if a non-delta is overall smaller in size, we use that in preference due to flash + # sizing constraints. + if (len(delta_image_data) + QGFFrameDeltaDescriptorV1.length) < len(image_data): + # Copy across all the delta equivalents so that the rest of the processing acts on those + this_frame = delta_frame + location = delta_location + size = delta_size + converted = delta_converted + graphic_data = delta_graphic_data + raw_data = delta_raw_data + rle_data = delta_rle_data + use_raw_this_frame = delta_use_raw_this_frame + image_data = delta_image_data + use_delta_this_frame = True + + # Write out the frame descriptor + frame_offsets.frame_offsets[idx] = fp.tell() + vprint(f'{f"Frame {idx:3d} base":26s} {fp.tell():5d}d / {fp.tell():04X}h') + frame_descriptor = QGFFrameDescriptorV1() + frame_descriptor.is_delta = use_delta_this_frame + frame_descriptor.is_transparent = False + frame_descriptor.format = format['image_format_byte'] + frame_descriptor.compression = 0x00 if use_raw_this_frame else 0x01 # See qp.h, painter_compression_t + frame_descriptor.delay = frame.info['duration'] if 'duration' in frame.info else 1000 # If we're not an animation, just pretend we're delaying for 1000ms + frame_descriptor.write(fp) + + # Write out the palette if required + if format['has_palette']: + palette = graphic_data[0] + palette_descriptor = QGFFramePaletteDescriptorV1() + + # Helper to convert from RGB888 to the QMK "dialect" of HSV888 + def rgb888_to_qmk_hsv888(e): + hsv = rgb_to_hsv(e[0] / 255.0, e[1] / 255.0, e[2] / 255.0) + return (int(hsv[0] * 255.0), int(hsv[1] * 255.0), int(hsv[2] * 255.0)) + + # Convert all palette entries to HSV888 and write to the output + palette_descriptor.palette_entries = list(map(rgb888_to_qmk_hsv888, palette)) + vprint(f'{f"Frame {idx:3d} palette":26s} {fp.tell():5d}d / {fp.tell():04X}h') + palette_descriptor.write(fp) + + # Write out the delta info if required + if use_delta_this_frame: + # Set up the rendering location of where the delta frame should be situated + delta_descriptor = QGFFrameDeltaDescriptorV1() + delta_descriptor.left = location[0] + delta_descriptor.top = location[1] + delta_descriptor.right = location[0] + size[0] + delta_descriptor.bottom = location[1] + size[1] + + # Write the delta frame to the output + vprint(f'{f"Frame {idx:3d} delta":26s} {fp.tell():5d}d / {fp.tell():04X}h') + delta_descriptor.write(fp) + + # Write out the data for this frame to the output + data_descriptor = QGFFrameDataDescriptorV1() + data_descriptor.data = image_data + vprint(f'{f"Frame {idx:3d} data":26s} {fp.tell():5d}d / {fp.tell():04X}h') + data_descriptor.write(fp) + + # Iterate over each if the input frames, writing it to the output in the process + _for_all_frames(_write_frame) + + # Go back and update the graphics descriptor now that we can determine the final file size + graphics_descriptor.total_file_size = fp.tell() + fp.seek(graphics_descriptor_location, 0) + graphics_descriptor.write(fp) + + # Go back and update the frame offsets now that they're written to the file + fp.seek(frame_offset_location, 0) + frame_offsets.write(fp) + + +######################################################################################################################## + +# Register with PIL so that it knows about the QGF format +Image.register_open(QGFImageFile.format, QGFImageFile, _accept) +Image.register_save(QGFImageFile.format, _save) +Image.register_save_all(QGFImageFile.format, _save) +Image.register_extension(QGFImageFile.format, f".{QGFImageFile.format.lower()}") +Image.register_mime(QGFImageFile.format, f"image/{QGFImageFile.format.lower()}") |