diff options
Diffstat (limited to 'source')
| -rw-r--r-- | source/fitz/image.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/source/fitz/image.c b/source/fitz/image.c index 3ee5f88d..e2ac2de3 100644 --- a/source/fitz/image.c +++ b/source/fitz/image.c @@ -278,6 +278,29 @@ fz_image_get_pixmap(fz_context *ctx, fz_image *image, int w, int h) case FZ_IMAGE_JXR: tile = fz_load_jxr(ctx, image->buffer->buffer->data, image->buffer->buffer->len); break; + case FZ_IMAGE_JPEG: + /* Scan JPEG stream and patch missing width/height values in header */ + { + unsigned char *d = image->buffer->buffer->data; + unsigned char *e = d + image->buffer->buffer->len; + for (d += 2; d + 9 < e && d[0] == 0xFF; d += (d[2] << 8 | d[3]) + 2) + { + if (d[1] < 0xC0 || 0xC3 < d[1]) + continue; + if (d[7] == 0xFF && d[8] == 0xFF) + { + d[7] = (image->w >> 8) & 0xFF; + d[8] = image->w & 0xFF; + } + if (d[5] == 0xFF && d[6] == 0xFF) + { + d[5] = (image->h >> 8) & 0xFF; + d[6] = image->h & 0xFF; + } + } + } + /* fall through */ + default: native_l2factor = l2factor; stm = fz_open_image_decomp_stream_from_buffer(ctx, image->buffer, &native_l2factor); |