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inherit image_types
# This sets the granularity of the sparse image conversion. Chunk sizes will be
# specified in units of this value. Setting this value smaller than the
# underlying image's block size will not result in any further space saving.
# However, there is no loss in correctness if this value is larger or smaller
# than optimal. This value should be a power of two.
SPARSE_BLOCK_SIZE ??= "4096"
CONVERSIONTYPES += "sparse"
CONVERSION_CMD:sparse() {
INPUT="${IMAGE_NAME}${IMAGE_NAME_SUFFIX}.${type}"
truncate --no-create --size=%${SPARSE_BLOCK_SIZE} "$INPUT"
img2simg -s "$INPUT" "$INPUT.sparse" ${SPARSE_BLOCK_SIZE}
}
CONVERSION_DEPENDS_sparse = "android-tools-native"
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