/*
- * Image Library -- GraphicsMagick
+ * Image Library -- GraphicsMagick (slow fallback library)
*
* (c) 2006 Pavel Charvat <pchar@ucw.cz>
*
* of the GNU Lesser General Public License.
*/
-#define LOCAL_DEBUG
+#undef LOCAL_DEBUG
#include "lib/lib.h"
#include "lib/mempool.h"
#define MAX_FILE_SIZE (1 << 30)
#define QUANTUM_SCALE (QuantumDepth - 8)
#define QUANTUM_TO_BYTE(x) ((uns)(x) >> QUANTUM_SCALE)
+#define BYTE_TO_QUANTUM(x) ((uns)(x) << QUANTUM_SCALE)
+#define OPACITY_MAX ((1 << QuantumDepth) - 1)
struct magick_read_data {
ExceptionInfo exception;
/* Read entire stream */
sh_off_t file_size = bfilesize(io->fastbuf) - btell(io->fastbuf);
- if (file_size > MAX_FILE_SIZE)
+ if (unlikely(file_size > MAX_FILE_SIZE))
{
image_thread_err(io->thread, IMAGE_ERR_READ_FAILED, "Too long stream.");
return 0;
}
uns buf_size = file_size;
byte *buf = xmalloc(buf_size);
- bread(io->fastbuf, buf, buf_size);
+ breadb(io->fastbuf, buf, buf_size);
/* Allocate read structure */
struct magick_read_data *rd = io->read_data = mp_alloc(io->internal_pool, sizeof(*rd));
/* Read the image */
rd->image = BlobToImage(rd->info, buf, buf_size, &rd->exception);
xfree(buf);
- if (!rd->image)
+ if (unlikely(!rd->image))
{
image_thread_err(io->thread, IMAGE_ERR_READ_FAILED, "GraphicsMagick failed to read the image.");
goto err;
}
- if (rd->image->columns > IMAGE_MAX_SIZE || rd->image->rows > IMAGE_MAX_SIZE)
+ if (unlikely(rd->image->columns > IMAGE_MAX_SIZE || rd->image->rows > IMAGE_MAX_SIZE))
{
image_thread_err(io->thread, IMAGE_ERR_INVALID_DIMENSIONS, "Image too large.");
goto err;
}
/* Fill image parameters */
- if (!io->cols)
- io->cols = rd->image->columns;
- if (!io->rows)
- io->rows = rd->image->rows;
- if (!(io->flags & IMAGE_CHANNELS_FORMAT))
- {
- switch (rd->image->colorspace)
- {
- case GRAYColorspace:
- io->flags |= COLOR_SPACE_GRAYSCALE | IMAGE_ALPHA;
- break;
- default:
- io->flags |= COLOR_SPACE_RGB | IMAGE_ALPHA;
- break;
- }
+ io->cols = rd->image->columns;
+ io->rows = rd->image->rows;
+ switch (rd->image->colorspace)
+ {
+ case GRAYColorspace:
+ io->flags |= COLOR_SPACE_GRAYSCALE | IMAGE_ALPHA;
+ break;
+ default:
+ io->flags |= COLOR_SPACE_RGB | IMAGE_ALPHA;
+ break;
}
+ io->number_of_colors = rd->image->colors;
+ if (rd->image->storage_class == PseudoClass && rd->image->compression != JPEGCompression)
+ io->has_palette = 1;
io->read_cancel = libmagick_read_cancel;
return 1;
struct image *img = need_scale ?
image_new(io->thread, rd->image->columns, rd->image->rows, io->flags & IMAGE_CHANNELS_FORMAT, NULL) :
image_new(io->thread, io->cols, io->rows, io->flags, io->pool);
- if (!img)
+ if (unlikely(!img))
goto err;
/* Acquire pixels */
PixelPacket *src = (PixelPacket *)AcquireImagePixels(rd->image, 0, 0, rd->image->columns, rd->image->rows, &rd->exception);
- if (!src)
+ if (unlikely(!src))
{
image_thread_err(io->thread, IMAGE_ERR_READ_FAILED, "Cannot acquire image pixels.");
goto err;
if (need_scale)
{
struct image *img2 = image_new(io->thread, io->cols, io->rows, io->flags, io->pool);
- if (!img2)
+ if (unlikely(!img2))
goto err2;
int result = image_scale(io->thread, img2, img);
- image_destroy(io->thread, img);
+ image_destroy(img);
img = img2;
need_destroy = !io->pool;
- if (!result)
+ if (unlikely(!result))
goto err2;
}
libmagick_destroy_read_data(rd);
err2:
if (need_destroy)
- image_destroy(io->thread, img);
+ image_destroy(img);
return 0;
}
int
libmagick_write(struct image_io *io)
{
- image_thread_err(io->thread, IMAGE_ERR_NOT_IMPLEMENTED, "GraphicsMagick write not implemented.");
- return 0;
+ DBG("libmagick_write()");
+
+ /* Initialize GraphicsMagick */
+ int result = 0;
+ ExceptionInfo exception;
+ ImageInfo *info;
+ InitializeMagick(NULL);
+ GetExceptionInfo(&exception);
+ info = CloneImageInfo(NULL);
+
+ /* Setup image parameters and allocate the image*/
+ struct image *img = io->image;
+ switch (img->flags & IMAGE_COLOR_SPACE)
+ {
+ case COLOR_SPACE_GRAYSCALE:
+ info->colorspace = GRAYColorspace;
+ break;
+ case COLOR_SPACE_RGB:
+ info->colorspace = RGBColorspace;
+ break;
+ default:
+ ASSERT(0);
+ }
+ switch (io->format)
+ {
+ case IMAGE_FORMAT_JPEG:
+ strcpy(info->magick, "JPEG");
+ if (io->jpeg_quality)
+ info->quality = MIN(io->jpeg_quality, 100);
+ break;
+ case IMAGE_FORMAT_PNG:
+ strcpy(info->magick, "PNG");
+ break;
+ case IMAGE_FORMAT_GIF:
+ strcpy(info->magick, "GIF");
+ break;
+ default:
+ ASSERT(0);
+ }
+ Image *image = AllocateImage(info);
+ if (unlikely(!image))
+ {
+ image_thread_err(io->thread, IMAGE_ERR_WRITE_FAILED, "GraphicsMagick failed to allocate the image.");
+ goto err;
+ }
+ image->columns = img->cols;
+ image->rows = img->rows;
+
+ /* Get pixels */
+ PixelPacket *pixels = SetImagePixels(image, 0, 0, img->cols, img->rows), *dest = pixels;
+ if (unlikely(!pixels))
+ {
+ image_thread_err(io->thread, IMAGE_ERR_WRITE_FAILED, "Cannot get GraphicsMagick pixels.");
+ goto err2;
+ }
+
+ /* Convert pixels */
+ switch (img->pixel_size)
+ {
+ case 1:
+# define IMAGE_WALK_INLINE
+# define IMAGE_WALK_UNROLL 4
+# define IMAGE_WALK_COL_STEP 1
+# define IMAGE_WALK_DO_STEP do{ \
+ dest->red = BYTE_TO_QUANTUM(pos[0]); \
+ dest->green = BYTE_TO_QUANTUM(pos[0]); \
+ dest->blue = BYTE_TO_QUANTUM(pos[0]); \
+ dest->opacity = OPACITY_MAX; \
+ dest++; }while(0)
+# include "images/image-walk.h"
+ break;
+
+ case 2:
+# define IMAGE_WALK_INLINE
+# define IMAGE_WALK_UNROLL 4
+# define IMAGE_WALK_COL_STEP 2
+# define IMAGE_WALK_DO_STEP do{ \
+ dest->red = BYTE_TO_QUANTUM(pos[0]); \
+ dest->green = BYTE_TO_QUANTUM(pos[0]); \
+ dest->blue = BYTE_TO_QUANTUM(pos[0]); \
+ dest->opacity = BYTE_TO_QUANTUM(pos[1]); \
+ dest++; }while(0)
+# include "images/image-walk.h"
+ break;
+
+ case 3:
+# define IMAGE_WALK_INLINE
+# define IMAGE_WALK_UNROLL 4
+# define IMAGE_WALK_COL_STEP 3
+# define IMAGE_WALK_DO_STEP do{ \
+ dest->red = BYTE_TO_QUANTUM(pos[0]); \
+ dest->green = BYTE_TO_QUANTUM(pos[1]); \
+ dest->blue = BYTE_TO_QUANTUM(pos[2]); \
+ dest->opacity = OPACITY_MAX; \
+ dest++; }while(0)
+# include "images/image-walk.h"
+ break;
+
+ case 4:
+# define IMAGE_WALK_INLINE
+# define IMAGE_WALK_UNROLL 4
+# define IMAGE_WALK_COL_STEP 4
+# define IMAGE_WALK_DO_STEP do{ \
+ dest->red = BYTE_TO_QUANTUM(pos[0]); \
+ dest->green = BYTE_TO_QUANTUM(pos[1]); \
+ dest->blue = BYTE_TO_QUANTUM(pos[2]); \
+ dest->opacity = BYTE_TO_QUANTUM(pos[3]); \
+ dest++; }while(0)
+# include "images/image-walk.h"
+ break;
+
+ default:
+ ASSERT(0);
+ }
+
+ /* Store pixels */
+ if (unlikely(!SyncImagePixels(image)))
+ {
+ image_thread_err(io->thread, IMAGE_ERR_WRITE_FAILED, "Cannot sync GraphicsMagick pixels.");
+ goto err2;
+ }
+
+ /* Write image */
+ size_t buf_len = 0;
+ void *buf = ImageToBlob(info, image, &buf_len, &exception);
+ if (unlikely(!buf))
+ {
+ image_thread_err(io->thread, IMAGE_ERR_WRITE_FAILED, "GraphicsMagick failed to compress the image.");
+ goto err2;
+ }
+ if (unlikely(buf_len > MAX_FILE_SIZE))
+ {
+ image_thread_err(io->thread, IMAGE_ERR_WRITE_FAILED, "Image too large.");
+ goto err2;
+ }
+
+ /* Write to stream */
+ bwrite(io->fastbuf, buf, buf_len);
+
+ /* Success */
+ result = 1;
+
+err2:
+ DestroyImage(image);
+err:
+ DestroyImageInfo(info);
+ DestroyExceptionInfo(&exception);
+ DestroyMagick();
+ return result;
}
projects / libucw.git / blobdiff