mirror of
https://github.com/Next-Flip/Momentum-Firmware.git
synced 2026-04-25 03:29:58 -07:00
5eb5d75046
* Store app flags in FAP header * Add app flag to UnloadAssetPacks to free RAM * Unload asset packs in NFC and MFKey * Clearer size units * Update changelog * Future proof logic * Sync apps
116 lines
2.8 KiB
Python
116 lines
2.8 KiB
Python
import os
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import struct
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from enum import IntFlag
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from dataclasses import dataclass, field
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from flipper.assets.icon import file2image
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from .appmanifest import FlipperApplication
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_MANIFEST_MAGIC = 0x52474448
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class ElfManifestFlag(IntFlag):
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Default = 0
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InsomniaSafe = 1 << 0
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UnloadAssetPacks = 1 << 7
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@dataclass
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class ElfManifestBaseHeader:
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manifest_version: int
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api_version: int
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hardware_target_id: int
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manifest_magic: int = 0x52474448
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def as_bytes(self):
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return struct.pack(
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"<IIIh",
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self.manifest_magic,
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self.manifest_version,
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self.api_version,
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self.hardware_target_id,
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)
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@dataclass
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class ElfManifestV1:
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stack_size: int
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app_version: int
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name: str = ""
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icon: bytes = field(default=b"")
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def as_bytes(self):
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return struct.pack(
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"<hI32s?32s",
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self.stack_size,
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self.app_version,
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bytes(self.name.encode("ascii")),
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bool(self.icon),
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self.icon,
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)
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@dataclass
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class ElfManifestV1Ext:
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stack_size: int
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app_version: int
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name: str = ""
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icon: bytes = field(default=b"")
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flags: int = ElfManifestFlag.Default
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def as_bytes(self):
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return struct.pack(
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"<hI32s?32sB",
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self.stack_size,
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self.app_version,
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bytes(self.name.encode("ascii")),
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bool(self.icon),
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self.icon,
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self.flags,
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)
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def assemble_manifest_data(
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app_manifest: FlipperApplication,
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hardware_target: int,
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sdk_version,
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):
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image_data = b""
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if app_manifest.fap_icon:
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image = file2image(os.path.join(app_manifest._apppath, app_manifest.fap_icon))
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if (image.width, image.height) != (10, 10):
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raise ValueError(
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f"Flipper app icon must be 10x10 pixels, but {image.width}x{image.height} was given"
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)
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if len(image.data) > 32:
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raise ValueError(
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f"Flipper app icon must be 32 bytes or less, but {len(image.data)} bytes were given"
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)
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image_data = image.data
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app_version_as_int = ((app_manifest.fap_version[0] & 0xFFFF) << 16) | (
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app_manifest.fap_version[1] & 0xFFFF
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)
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flags_as_int = ElfManifestFlag.Default
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for flag in app_manifest.flags:
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flags_as_int |= ElfManifestFlag[flag]
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data = ElfManifestBaseHeader(
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manifest_version=1,
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api_version=sdk_version,
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hardware_target_id=hardware_target,
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).as_bytes()
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data += ElfManifestV1Ext(
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stack_size=app_manifest.stack_size,
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app_version=app_version_as_int,
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name=app_manifest.name,
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icon=image_data,
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flags=flags_as_int,
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).as_bytes()
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return data
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