licharset: added const qualifiers

[libucw.git] / images / io-libjpeg.c

diff --git a/images/io-libjpeg.c b/images/io-libjpeg.c
index 144e0b0e0a039f066099d1009513a1f57e18eef4..be394c95b393a9152fe300c60bd1adbdc9391e30 100644 (file)
--- a/images/io-libjpeg.c
+++ b/images/io-libjpeg.c
@@ -75,7 +75,7 @@ libjpeg_emit_message(j_common_ptr cinfo UNUSED, int msg_level UNUSED)
   cinfo->err->format_message(cinfo, buf);
   DBG("libjpeg_emit_message(): [%d] %s", msg_level, buf);
 #endif
-#if 1
+#if 0
   // Terminate on warning?
   if (unlikely(msg_level == -1))
     {
@@ -91,8 +91,16 @@ libjpeg_emit_message(j_common_ptr cinfo UNUSED, int msg_level UNUSED)
 static inline uns
 libjpeg_fastbuf_read_prepare(struct libjpeg_read_internals *i)
 {
+  DBG("libjpeg_fb_read_prepare()");
   byte *start;
   uns len = bdirect_read_prepare(i->fastbuf, &start);
+  DBG("readed %u bytes at %p", len, start);
+  if (!len)
+    {
+      // XXX: maybe only generate a warning and return EOI markers to recover from such errors (also in skip_input_data)
+      IMAGE_ERROR(i->err.io->context, IMAGE_ERROR_READ_FAILED, "Incomplete JPEG file");
+      longjmp(i->err.setjmp_buf, 1);
+    }
   i->fastbuf_pos = start + len;
   i->src.next_input_byte = start;
   i->src.bytes_in_buffer = len;
@@ -102,6 +110,7 @@ libjpeg_fastbuf_read_prepare(struct libjpeg_read_internals *i)
 static inline void
 libjpeg_fastbuf_read_commit(struct libjpeg_read_internals *i)
 {
+  DBG("libjpeg_fb_read_commit()");
   bdirect_read_commit(i->fastbuf, i->fastbuf_pos);
 }
 
@@ -125,7 +134,8 @@ libjpeg_fill_input_buffer(j_decompress_ptr cinfo)
   DBG("libjpeg_fill_input_buffer()");
   struct libjpeg_read_internals *i = (struct libjpeg_read_internals *)cinfo;
   libjpeg_fastbuf_read_commit(i);
-  return !!libjpeg_fastbuf_read_prepare(i);
+  libjpeg_fastbuf_read_prepare(i);
+  return 1;
 }
 
 static void
@@ -367,7 +377,11 @@ libjpeg_read_data(struct image_io *io)
          {
            case JCS_CMYK:
              read_flags = (read_flags & ~IMAGE_COLOR_SPACE & IMAGE_CHANNELS_FORMAT) | COLOR_SPACE_CMYK; 
-             i->cinfo.out_color_space = JCS_YCbCr;
+             i->cinfo.out_color_space = JCS_CMYK;
+             break;
+           case JCS_YCCK:
+             read_flags = (read_flags & ~IMAGE_COLOR_SPACE & IMAGE_CHANNELS_FORMAT) | COLOR_SPACE_YCCK; 
+             i->cinfo.out_color_space = JCS_YCCK;
              break;
            default:
              read_flags = (read_flags & ~IMAGE_COLOR_SPACE & IMAGE_CHANNELS_FORMAT) | COLOR_SPACE_RGB; 
@@ -529,6 +543,7 @@ libjpeg_write(struct image_io *io)
     }
   i.cinfo.input_components = color_space_channels[img->flags & IMAGE_COLOR_SPACE];
   jpeg_set_defaults(&i.cinfo);
+  jpeg_set_colorspace(&i.cinfo, i.cinfo.in_color_space);
   if (io->jpeg_quality)
     jpeg_set_quality(&i.cinfo, MIN(io->jpeg_quality, 100), 1);
   if (io->exif_size)