diff options
Diffstat (limited to '')
| -rw-r--r-- | changelog.d/5039.bugfix | 1 | ||||
| -rw-r--r-- | synapse/python_dependencies.py | 2 | ||||
| -rw-r--r-- | synapse/rest/media/v1/media_repository.py | 9 | ||||
| -rw-r--r-- | synapse/rest/media/v1/thumbnailer.py | 35 |
4 files changed, 46 insertions, 1 deletions
diff --git a/changelog.d/5039.bugfix b/changelog.d/5039.bugfix new file mode 100644 index 0000000000..212cff7ae8 --- /dev/null +++ b/changelog.d/5039.bugfix @@ -0,0 +1 @@ +Fix image orientation when generating thumbnails (needs pillow>=4.3.0). Contributed by Pau Rodriguez-Estivill. diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py index 2708f5e820..fdcfb90a7e 100644 --- a/synapse/python_dependencies.py +++ b/synapse/python_dependencies.py @@ -53,7 +53,7 @@ REQUIREMENTS = [ "pyasn1-modules>=0.0.7", "daemonize>=2.3.1", "bcrypt>=3.1.0", - "pillow>=3.1.2", + "pillow>=4.3.0", "sortedcontainers>=1.4.4", "psutil>=2.0.0", "pymacaroons>=0.13.0", diff --git a/synapse/rest/media/v1/media_repository.py b/synapse/rest/media/v1/media_repository.py index bdffa97805..8569677355 100644 --- a/synapse/rest/media/v1/media_repository.py +++ b/synapse/rest/media/v1/media_repository.py @@ -444,6 +444,9 @@ class MediaRepository(object): ) return + if thumbnailer.transpose_method is not None: + m_width, m_height = thumbnailer.transpose() + if t_method == "crop": t_byte_source = thumbnailer.crop(t_width, t_height, t_type) elif t_method == "scale": @@ -578,6 +581,12 @@ class MediaRepository(object): ) return + if thumbnailer.transpose_method is not None: + m_width, m_height = yield logcontext.defer_to_thread( + self.hs.get_reactor(), + thumbnailer.transpose + ) + # We deduplicate the thumbnail sizes by ignoring the cropped versions if # they have the same dimensions of a scaled one. thumbnails = {} diff --git a/synapse/rest/media/v1/thumbnailer.py b/synapse/rest/media/v1/thumbnailer.py index a4b26c2587..3efd0d80fc 100644 --- a/synapse/rest/media/v1/thumbnailer.py +++ b/synapse/rest/media/v1/thumbnailer.py @@ -20,6 +20,17 @@ import PIL.Image as Image logger = logging.getLogger(__name__) +EXIF_ORIENTATION_TAG = 0x0112 +EXIF_TRANSPOSE_MAPPINGS = { + 2: Image.FLIP_LEFT_RIGHT, + 3: Image.ROTATE_180, + 4: Image.FLIP_TOP_BOTTOM, + 5: Image.TRANSPOSE, + 6: Image.ROTATE_270, + 7: Image.TRANSVERSE, + 8: Image.ROTATE_90 +} + class Thumbnailer(object): @@ -31,6 +42,30 @@ class Thumbnailer(object): def __init__(self, input_path): self.image = Image.open(input_path) self.width, self.height = self.image.size + self.transpose_method = None + try: + # We don't use ImageOps.exif_transpose since it crashes with big EXIF + image_exif = self.image._getexif() + if image_exif is not None: + image_orientation = image_exif.get(EXIF_ORIENTATION_TAG) + self.transpose_method = EXIF_TRANSPOSE_MAPPINGS.get(image_orientation) + except Exception as e: + # A lot of parsing errors can happen when parsing EXIF + logger.info("Error parsing image EXIF information: %s", e) + + def transpose(self): + """Transpose the image using its EXIF Orientation tag + + Returns: + Tuple[int, int]: (width, height) containing the new image size in pixels. + """ + if self.transpose_method is not None: + self.image = self.image.transpose(self.transpose_method) + self.width, self.height = self.image.size + self.transpose_method = None + # We don't need EXIF any more + self.image.info["exif"] = None + return self.image.size def aspect(self, max_width, max_height): """Calculate the largest size that preserves aspect ratio which |