def DecodeYUV(data):
"""
Decode the given WebP image data to a YUV bitmap
:param data: The original WebP image data
:type data: bytearray
:rtype: WebPImage
"""
# Prepare parameters
width = c_int(-1)
height = c_int(-1)
size = len(data)
u = create_string_buffer(0)
v = create_string_buffer(0)
stride = c_int(-1)
uv_stride = c_int(-1)
# Decode image an return pointer to decoded data
bitmap_p = _LIBRARY.WebPDecodeYUV(
str(data),
size,
width,
height,
u,
v,
# u, v,
stride,
uv_stride)
# Convert data to Python types
width = width.value
height = height.value
stride = stride.value
uv_stride = uv_stride.value
# Copy decoded data into a buffer
size = stride * height
bitmap = create_string_buffer(size)
memmove(bitmap, bitmap_p, size)
# Copy UV chrominace bitmap
uv_size = uv_stride * height
u_bitmap = create_string_buffer(uv_size)
v_bitmap = create_string_buffer(uv_size)
memmove(u_bitmap, u, uv_size)
memmove(v_bitmap, v, uv_size)
# End
return BitmapHandler(bytearray(bitmap),
BitmapHandler.YUV,
width,
height,
stride,
u_bitmap=bytearray(u_bitmap),
v_bitmap=bytearray(v_bitmap),
uv_stride=uv_stride)
def DecodeBGR(data):
"""
Decode the given WebP image data to a BGR bitmap
:param data: The original WebP image data
:type data: bytearray
:rtype: WebPImage
"""
bitmap, width, height = _decode(data, _LIBRARY.WebPDecodeBGR, PIXEL_SZ)
return BitmapHandler(bitmap, BitmapHandler.BGR, width, height,
PIXEL_SZ * width)