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https://github.com/python-pillow/Pillow.git
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Adding support to reading tiled and YcbCr jpegs tiffs through libtiff
This commit is contained in:
Konstantin Kopachev
parent
4c47628900
commit
f0436a4ddc
src
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@ -257,14 +257,14 @@ OPEN_INFO = {
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(II, 5, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0)): ("CMYK", "CMYKXX"),
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(MM, 5, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0)): ("CMYK", "CMYKXX"),
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(II, 6, (1,), 1, (8, 8, 8), ()): ("YCbCr", "YCbCr"),
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(MM, 6, (1,), 1, (8, 8, 8), ()): ("YCbCr", "YCbCr"),
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(II, 6, (1,), 1, (8, 8, 8, 8), (0,)): ("YCbCr", "YCbCrX"),
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(MM, 6, (1,), 1, (8, 8, 8, 8), (0,)): ("YCbCr", "YCbCrX"),
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(II, 6, (1,), 1, (8, 8, 8, 8, 8), (0, 0)): ("YCbCr", "YCbCrXX"),
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(MM, 6, (1,), 1, (8, 8, 8, 8, 8), (0, 0)): ("YCbCr", "YCbCrXX"),
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(II, 6, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0, 0)): ("YCbCr", "YCbCrXXX"),
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(MM, 6, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0, 0)): ("YCbCr", "YCbCrXXX"),
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(II, 6, (1,), 1, (8, 8, 8), ()): ("RGB", "RGB"),
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(MM, 6, (1,), 1, (8, 8, 8), ()): ("RGB", "RGB"),
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(II, 6, (1,), 1, (8, 8, 8, 8), (0,)): ("RGB", "RGBX"),
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(MM, 6, (1,), 1, (8, 8, 8, 8), (0,)): ("RGB", "RGBX"),
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(II, 6, (1,), 1, (8, 8, 8, 8, 8), (0, 0)): ("RGB", "RGBXX"),
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(MM, 6, (1,), 1, (8, 8, 8, 8, 8), (0, 0)): ("RGB", "RGBXX"),
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(II, 6, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0, 0)): ("RGB", "RGBXXX"),
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(MM, 6, (1,), 1, (8, 8, 8, 8, 8, 8), (0, 0, 0)): ("RGB", "RGBXXX"),
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(II, 8, (1,), 1, (8, 8, 8), ()): ("LAB", "LAB"),
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(MM, 8, (1,), 1, (8, 8, 8), ()): ("LAB", "LAB"),
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@ -1062,6 +1062,8 @@ class TiffImageFile(ImageFile.ImageFile):
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compression = self._compression
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if compression == "raw":
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args = (rawmode, 0, 1)
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if compression == "jpeg":
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args = ("RGB", "")
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elif compression == "packbits":
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args = rawmode
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@ -1187,6 +1189,7 @@ class TiffImageFile(ImageFile.ImageFile):
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print("- photometric_interpretation:", photo)
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print("- planar_configuration:", self._planar_configuration)
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print("- fill_order:", fillorder)
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print("- YCbCr subsampling:", self.tag.get(530))
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# size
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xsize = self.tag_v2.get(IMAGEWIDTH)
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@ -1258,13 +1261,8 @@ class TiffImageFile(ImageFile.ImageFile):
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# build tile descriptors
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x = y = layer = 0
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self.tile = []
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self.use_load_libtiff = False
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if STRIPOFFSETS in self.tag_v2:
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# striped image
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offsets = self.tag_v2[STRIPOFFSETS]
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h = self.tag_v2.get(ROWSPERSTRIP, ysize)
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w = self.size[0]
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if READ_LIBTIFF or self._compression != 'raw':
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self.use_load_libtiff = self._compression != 'raw'
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if self.use_load_libtiff:
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# Decoder expects entire file as one tile.
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# There's a buffer size limit in load (64k)
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# so large g4 images will fail if we use that
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@ -1273,8 +1271,6 @@ class TiffImageFile(ImageFile.ImageFile):
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# Setup the one tile for the whole image, then
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# use the _load_libtiff function.
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self.use_load_libtiff = True
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# libtiff handles the fillmode for us, so 1;IR should
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# actually be 1;I. Including the R double reverses the
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# bits, so stripes of the image are reversed. See
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@ -1307,38 +1303,29 @@ class TiffImageFile(ImageFile.ImageFile):
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a = (rawmode, self._compression, False)
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self.tile.append(
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(self._compression,
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(0, 0, w, ysize),
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(0, 0, xsize, ysize),
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0, a))
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a = None
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elif STRIPOFFSETS in self.tag_v2 or TILEOFFSETS in self.tag_v2:
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# striped image
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if STRIPOFFSETS in self.tag_v2:
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offsets = self.tag_v2[STRIPOFFSETS]
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h = self.tag_v2.get(ROWSPERSTRIP, ysize)
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w = self.size[0]
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else:
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for i, offset in enumerate(offsets):
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a = self._decoder(rawmode, layer, i)
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self.tile.append(
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(self._compression,
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(0, min(y, ysize), w, min(y+h, ysize)),
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offset, a))
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if DEBUG:
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print("tiles: ", self.tile)
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y = y + h
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if y >= self.size[1]:
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x = y = 0
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layer += 1
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a = None
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elif TILEOFFSETS in self.tag_v2:
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# tiled image
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offsets = self.tag_v2[TILEOFFSETS]
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w = self.tag_v2.get(322)
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h = self.tag_v2.get(323)
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a = None
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for o in self.tag_v2[TILEOFFSETS]:
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for offset in offsets:
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if not a:
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a = self._decoder(rawmode, layer)
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# FIXME: this doesn't work if the image size
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# is not a multiple of the tile size...
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self.tile.append(
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(self._compression,
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(x, y, x+w, y+h),
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o, a))
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(min(x, xsize), min(y, ysize), min(x+w, xsize), min(y+h, ysize)),
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offset, a))
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x = x + w
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if x >= self.size[0]:
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x, y = 0, y + h
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@ -1346,6 +1333,7 @@ class TiffImageFile(ImageFile.ImageFile):
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x = y = 0
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layer += 1
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a = None
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self.tile_prefix = self.tag_v2.get(JPEGTABLES, b"")
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else:
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if DEBUG:
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print("- unsupported data organization")
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@ -173,7 +173,6 @@ int ImagingLibTiffDecode(Imaging im, ImagingCodecState state, UINT8* buffer, int
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char *filename = "tempfile.tif";
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char *mode = "r";
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TIFF *tiff;
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tsize_t size;
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/* buffer is the encoded file, bytes is the length of the encoded file */
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@ -235,8 +234,67 @@ int ImagingLibTiffDecode(Imaging im, ImagingCodecState state, UINT8* buffer, int
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}
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}
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TIFFSetField(tiff, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
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if (TIFFIsTiled(tiff)) {
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state->bytes = TIFFTileSize(tiff);
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/* overflow check for malloc */
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if (state->bytes > INT_MAX - 1) {
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state->errcode = IMAGING_CODEC_MEMORY;
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TIFFClose(tiff);
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return -1;
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}
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/* realloc to fit whole tile */
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UINT8 *new = realloc (state->buffer, state->bytes);
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if (!new) {
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state->errcode = IMAGING_CODEC_MEMORY;
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TIFFClose(tiff);
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return -1;
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}
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state->buffer = new;
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TRACE(("TIFFTileSize: %d\n", state->bytes));
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uint32 x, y, tile_y;
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uint32 tileWidth, tileLength;
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TIFFGetField(tiff, TIFFTAG_TILEWIDTH, &tileWidth);
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TIFFGetField(tiff, TIFFTAG_TILELENGTH, &tileLength);
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for (y = state->yoff; y < state->ysize; y += tileLength) {
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for (x = state->xoff; x < state->xsize; x += tileWidth) {
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if (TIFFReadTile(tiff, (tdata_t)state->buffer, x, y, 0, 0) == -1) {
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TRACE(("Decode Error, Tile at %dx%d\n", x, y));
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state->errcode = IMAGING_CODEC_BROKEN;
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TIFFClose(tiff);
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return -1;
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}
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TRACE(("Read tile at %dx%d; \n\n", x, y));
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// iterate over each line in the tile and stuff data into image
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for (tile_y = 0; tile_y < min(tileLength, state->ysize - y); tile_y++) {
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TRACE(("Writing tile data at %dx%d using tilwWidth: %d; \n", tile_y + y, x, min(tileWidth, state->xsize - x)));
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// UINT8 * bbb = state->buffer + tile_y * (state->bytes / tileLength);
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// TRACE(("chars: %x%x%x%x\n", ((UINT8 *)bbb)[0], ((UINT8 *)bbb)[1], ((UINT8 *)bbb)[2], ((UINT8 *)bbb)[3]));
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state->shuffle((UINT8*) im->image[tile_y + y] + x * im->pixelsize,
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state->buffer + tile_y * (state->bytes / tileLength),
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min(tileWidth, state->xsize - x)
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);
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}
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}
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}
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} else {
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tsize_t size;
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size = TIFFScanlineSize(tiff);
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TRACE(("ScanlineSize: %d \n", size));
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TRACE(("ScanlineSize: %lu \n", size));
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if (size > state->bytes) {
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TRACE(("Error, scanline size > buffer size\n"));
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state->errcode = IMAGING_CODEC_BROKEN;
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@ -265,6 +323,7 @@ int ImagingLibTiffDecode(Imaging im, ImagingCodecState state, UINT8* buffer, int
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state->y++;
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}
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}
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TIFFClose(tiff);
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TRACE(("Done Decoding, Returning \n"));
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