Sweden-Number/dlls/windowscodecs/libjpeg.c

778 lines
21 KiB
C

/*
* Copyright 2009 Vincent Povirk for CodeWeavers
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#if 0
#pragma makedep unix
#endif
#include "config.h"
#include "wine/port.h"
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <setjmp.h>
#ifdef SONAME_LIBJPEG
/* This is a hack, so jpeglib.h does not redefine INT32 and the like*/
#define XMD_H
#define UINT8 JPEG_UINT8
#define UINT16 JPEG_UINT16
#define boolean jpeg_boolean
#undef HAVE_STDLIB_H
# include <jpeglib.h>
#undef HAVE_STDLIB_H
#define HAVE_STDLIB_H 1
#undef UINT8
#undef UINT16
#undef boolean
#endif
#include "ntstatus.h"
#define WIN32_NO_STATUS
#include "windef.h"
#include "winternl.h"
#include "winbase.h"
#include "objbase.h"
#include "wincodecs_private.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(wincodecs);
#ifdef SONAME_LIBJPEG
WINE_DECLARE_DEBUG_CHANNEL(jpeg);
static CRITICAL_SECTION init_jpeg_cs;
static CRITICAL_SECTION_DEBUG init_jpeg_cs_debug =
{
0, 0, &init_jpeg_cs,
{ &init_jpeg_cs_debug.ProcessLocksList,
&init_jpeg_cs_debug.ProcessLocksList },
0, 0, { (DWORD_PTR)(__FILE__ ": init_jpeg_cs") }
};
static CRITICAL_SECTION init_jpeg_cs = { &init_jpeg_cs_debug, -1, 0, 0, 0, 0 };
static void *libjpeg_handle;
#define MAKE_FUNCPTR(f) static typeof(f) * p##f
MAKE_FUNCPTR(jpeg_CreateCompress);
MAKE_FUNCPTR(jpeg_CreateDecompress);
MAKE_FUNCPTR(jpeg_destroy_compress);
MAKE_FUNCPTR(jpeg_destroy_decompress);
MAKE_FUNCPTR(jpeg_finish_compress);
MAKE_FUNCPTR(jpeg_read_header);
MAKE_FUNCPTR(jpeg_read_scanlines);
MAKE_FUNCPTR(jpeg_resync_to_restart);
MAKE_FUNCPTR(jpeg_set_defaults);
MAKE_FUNCPTR(jpeg_start_compress);
MAKE_FUNCPTR(jpeg_start_decompress);
MAKE_FUNCPTR(jpeg_std_error);
MAKE_FUNCPTR(jpeg_write_scanlines);
#undef MAKE_FUNCPTR
static void *load_libjpeg(void)
{
void *result;
RtlEnterCriticalSection(&init_jpeg_cs);
if((libjpeg_handle = dlopen(SONAME_LIBJPEG, RTLD_NOW)) != NULL) {
#define LOAD_FUNCPTR(f) \
if((p##f = dlsym(libjpeg_handle, #f)) == NULL) { \
ERR("failed to load symbol %s\n", #f); \
libjpeg_handle = NULL; \
RtlLeaveCriticalSection(&init_jpeg_cs); \
return NULL; \
}
LOAD_FUNCPTR(jpeg_CreateCompress);
LOAD_FUNCPTR(jpeg_CreateDecompress);
LOAD_FUNCPTR(jpeg_destroy_compress);
LOAD_FUNCPTR(jpeg_destroy_decompress);
LOAD_FUNCPTR(jpeg_finish_compress);
LOAD_FUNCPTR(jpeg_read_header);
LOAD_FUNCPTR(jpeg_read_scanlines);
LOAD_FUNCPTR(jpeg_resync_to_restart);
LOAD_FUNCPTR(jpeg_set_defaults);
LOAD_FUNCPTR(jpeg_start_compress);
LOAD_FUNCPTR(jpeg_start_decompress);
LOAD_FUNCPTR(jpeg_std_error);
LOAD_FUNCPTR(jpeg_write_scanlines);
#undef LOAD_FUNCPTR
}
result = libjpeg_handle;
RtlLeaveCriticalSection(&init_jpeg_cs);
return result;
}
static void error_exit_fn(j_common_ptr cinfo)
{
char message[JMSG_LENGTH_MAX];
if (ERR_ON(jpeg))
{
cinfo->err->format_message(cinfo, message);
ERR_(jpeg)("%s\n", message);
}
longjmp(*(jmp_buf*)cinfo->client_data, 1);
}
static void emit_message_fn(j_common_ptr cinfo, int msg_level)
{
char message[JMSG_LENGTH_MAX];
if (msg_level < 0 && ERR_ON(jpeg))
{
cinfo->err->format_message(cinfo, message);
ERR_(jpeg)("%s\n", message);
}
else if (msg_level == 0 && WARN_ON(jpeg))
{
cinfo->err->format_message(cinfo, message);
WARN_(jpeg)("%s\n", message);
}
else if (msg_level > 0 && TRACE_ON(jpeg))
{
cinfo->err->format_message(cinfo, message);
TRACE_(jpeg)("%s\n", message);
}
}
struct jpeg_decoder {
struct decoder decoder;
struct decoder_frame frame;
BOOL cinfo_initialized;
IStream *stream;
struct jpeg_decompress_struct cinfo;
struct jpeg_error_mgr jerr;
struct jpeg_source_mgr source_mgr;
BYTE source_buffer[1024];
UINT stride;
BYTE *image_data;
};
static inline struct jpeg_decoder *impl_from_decoder(struct decoder* iface)
{
return CONTAINING_RECORD(iface, struct jpeg_decoder, decoder);
}
static inline struct jpeg_decoder *decoder_from_decompress(j_decompress_ptr decompress)
{
return CONTAINING_RECORD(decompress, struct jpeg_decoder, cinfo);
}
static void CDECL jpeg_decoder_destroy(struct decoder* iface)
{
struct jpeg_decoder *This = impl_from_decoder(iface);
if (This->cinfo_initialized) pjpeg_destroy_decompress(&This->cinfo);
free(This->image_data);
RtlFreeHeap(GetProcessHeap(), 0, This);
}
static void source_mgr_init_source(j_decompress_ptr cinfo)
{
}
static jpeg_boolean source_mgr_fill_input_buffer(j_decompress_ptr cinfo)
{
struct jpeg_decoder *This = decoder_from_decompress(cinfo);
HRESULT hr;
ULONG bytesread;
hr = stream_read(This->stream, This->source_buffer, 1024, &bytesread);
if (FAILED(hr) || bytesread == 0)
{
return FALSE;
}
else
{
This->source_mgr.next_input_byte = This->source_buffer;
This->source_mgr.bytes_in_buffer = bytesread;
return TRUE;
}
}
static void source_mgr_skip_input_data(j_decompress_ptr cinfo, long num_bytes)
{
struct jpeg_decoder *This = decoder_from_decompress(cinfo);
if (num_bytes > This->source_mgr.bytes_in_buffer)
{
stream_seek(This->stream, num_bytes - This->source_mgr.bytes_in_buffer, STREAM_SEEK_CUR, NULL);
This->source_mgr.bytes_in_buffer = 0;
}
else if (num_bytes > 0)
{
This->source_mgr.next_input_byte += num_bytes;
This->source_mgr.bytes_in_buffer -= num_bytes;
}
}
static void source_mgr_term_source(j_decompress_ptr cinfo)
{
}
static HRESULT CDECL jpeg_decoder_initialize(struct decoder* iface, IStream *stream, struct decoder_stat *st)
{
struct jpeg_decoder *This = impl_from_decoder(iface);
int ret;
jmp_buf jmpbuf;
UINT data_size, i;
if (This->cinfo_initialized)
return WINCODEC_ERR_WRONGSTATE;
pjpeg_std_error(&This->jerr);
This->jerr.error_exit = error_exit_fn;
This->jerr.emit_message = emit_message_fn;
This->cinfo.err = &This->jerr;
This->cinfo.client_data = jmpbuf;
if (setjmp(jmpbuf))
return E_FAIL;
pjpeg_CreateDecompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_decompress_struct));
This->cinfo_initialized = TRUE;
This->stream = stream;
stream_seek(This->stream, 0, STREAM_SEEK_SET, NULL);
This->source_mgr.bytes_in_buffer = 0;
This->source_mgr.init_source = source_mgr_init_source;
This->source_mgr.fill_input_buffer = source_mgr_fill_input_buffer;
This->source_mgr.skip_input_data = source_mgr_skip_input_data;
This->source_mgr.resync_to_restart = pjpeg_resync_to_restart;
This->source_mgr.term_source = source_mgr_term_source;
This->cinfo.src = &This->source_mgr;
ret = pjpeg_read_header(&This->cinfo, TRUE);
if (ret != JPEG_HEADER_OK) {
WARN("Jpeg image in stream has bad format, read header returned %d.\n",ret);
return E_FAIL;
}
switch (This->cinfo.jpeg_color_space)
{
case JCS_GRAYSCALE:
This->cinfo.out_color_space = JCS_GRAYSCALE;
This->frame.bpp = 8;
This->frame.pixel_format = GUID_WICPixelFormat8bppGray;
break;
case JCS_RGB:
case JCS_YCbCr:
This->cinfo.out_color_space = JCS_RGB;
This->frame.bpp = 24;
This->frame.pixel_format = GUID_WICPixelFormat24bppBGR;
break;
case JCS_CMYK:
case JCS_YCCK:
This->cinfo.out_color_space = JCS_CMYK;
This->frame.bpp = 32;
This->frame.pixel_format = GUID_WICPixelFormat32bppCMYK;
break;
default:
ERR("Unknown JPEG color space %i\n", This->cinfo.jpeg_color_space);
return E_FAIL;
}
if (!pjpeg_start_decompress(&This->cinfo))
{
ERR("jpeg_start_decompress failed\n");
return E_FAIL;
}
This->frame.width = This->cinfo.output_width;
This->frame.height = This->cinfo.output_height;
switch (This->cinfo.density_unit)
{
case 2: /* pixels per centimeter */
This->frame.dpix = This->cinfo.X_density * 2.54;
This->frame.dpiy = This->cinfo.Y_density * 2.54;
break;
case 1: /* pixels per inch */
This->frame.dpix = This->cinfo.X_density;
This->frame.dpiy = This->cinfo.Y_density;
break;
case 0: /* unknown */
default:
This->frame.dpix = This->frame.dpiy = 96.0;
break;
}
This->frame.num_color_contexts = 0;
This->frame.num_colors = 0;
This->stride = (This->frame.bpp * This->cinfo.output_width + 7) / 8;
data_size = This->stride * This->cinfo.output_height;
This->image_data = malloc(data_size);
if (!This->image_data)
return E_OUTOFMEMORY;
while (This->cinfo.output_scanline < This->cinfo.output_height)
{
UINT first_scanline = This->cinfo.output_scanline;
UINT max_rows;
JSAMPROW out_rows[4];
JDIMENSION ret;
max_rows = min(This->cinfo.output_height-first_scanline, 4);
for (i=0; i<max_rows; i++)
out_rows[i] = This->image_data + This->stride * (first_scanline+i);
ret = pjpeg_read_scanlines(&This->cinfo, out_rows, max_rows);
if (ret == 0)
{
ERR("read_scanlines failed\n");
return E_FAIL;
}
}
if (This->frame.bpp == 24)
{
/* libjpeg gives us RGB data and we want BGR, so byteswap the data */
reverse_bgr8(3, This->image_data,
This->cinfo.output_width, This->cinfo.output_height,
This->stride);
}
if (This->cinfo.out_color_space == JCS_CMYK && This->cinfo.saw_Adobe_marker)
{
/* Adobe JPEG's have inverted CMYK data. */
for (i=0; i<data_size; i++)
This->image_data[i] ^= 0xff;
}
st->frame_count = 1;
st->flags = WICBitmapDecoderCapabilityCanDecodeAllImages |
WICBitmapDecoderCapabilityCanDecodeSomeImages |
WICBitmapDecoderCapabilityCanEnumerateMetadata |
DECODER_FLAGS_UNSUPPORTED_COLOR_CONTEXT;
return S_OK;
}
static HRESULT CDECL jpeg_decoder_get_frame_info(struct decoder* iface, UINT frame, struct decoder_frame *info)
{
struct jpeg_decoder *This = impl_from_decoder(iface);
*info = This->frame;
return S_OK;
}
static HRESULT CDECL jpeg_decoder_copy_pixels(struct decoder* iface, UINT frame,
const WICRect *prc, UINT stride, UINT buffersize, BYTE *buffer)
{
struct jpeg_decoder *This = impl_from_decoder(iface);
return copy_pixels(This->frame.bpp, This->image_data,
This->frame.width, This->frame.height, This->stride,
prc, stride, buffersize, buffer);
}
static HRESULT CDECL jpeg_decoder_get_metadata_blocks(struct decoder* iface, UINT frame,
UINT *count, struct decoder_block **blocks)
{
FIXME("stub\n");
*count = 0;
*blocks = NULL;
return S_OK;
}
static HRESULT CDECL jpeg_decoder_get_color_context(struct decoder* This, UINT frame, UINT num,
BYTE **data, DWORD *datasize)
{
/* This should never be called because we report 0 color contexts and the unsupported flag. */
FIXME("stub\n");
return E_NOTIMPL;
}
static const struct decoder_funcs jpeg_decoder_vtable = {
jpeg_decoder_initialize,
jpeg_decoder_get_frame_info,
jpeg_decoder_copy_pixels,
jpeg_decoder_get_metadata_blocks,
jpeg_decoder_get_color_context,
jpeg_decoder_destroy
};
HRESULT CDECL jpeg_decoder_create(struct decoder_info *info, struct decoder **result)
{
struct jpeg_decoder *This;
if (!load_libjpeg())
{
ERR("Failed reading JPEG because unable to find %s\n", SONAME_LIBJPEG);
return E_FAIL;
}
This = RtlAllocateHeap(GetProcessHeap(), 0, sizeof(struct jpeg_decoder));
if (!This) return E_OUTOFMEMORY;
This->decoder.vtable = &jpeg_decoder_vtable;
This->cinfo_initialized = FALSE;
This->stream = NULL;
This->image_data = NULL;
*result = &This->decoder;
info->container_format = GUID_ContainerFormatJpeg;
info->block_format = GUID_ContainerFormatJpeg;
info->clsid = CLSID_WICJpegDecoder;
return S_OK;
}
typedef struct jpeg_compress_format {
const WICPixelFormatGUID *guid;
int bpp;
int num_components;
J_COLOR_SPACE color_space;
int swap_rgb;
} jpeg_compress_format;
static const jpeg_compress_format compress_formats[] = {
{ &GUID_WICPixelFormat24bppBGR, 24, 3, JCS_RGB, 1 },
{ &GUID_WICPixelFormat32bppCMYK, 32, 4, JCS_CMYK },
{ &GUID_WICPixelFormat8bppGray, 8, 1, JCS_GRAYSCALE },
{ 0 }
};
struct jpeg_encoder
{
struct encoder encoder;
IStream *stream;
BOOL cinfo_initialized;
struct jpeg_compress_struct cinfo;
struct jpeg_error_mgr jerr;
struct jpeg_destination_mgr dest_mgr;
struct encoder_frame encoder_frame;
const jpeg_compress_format *format;
BYTE dest_buffer[1024];
};
static inline struct jpeg_encoder *impl_from_encoder(struct encoder* iface)
{
return CONTAINING_RECORD(iface, struct jpeg_encoder, encoder);
}
static inline struct jpeg_encoder *encoder_from_compress(j_compress_ptr compress)
{
return CONTAINING_RECORD(compress, struct jpeg_encoder, cinfo);
}
static void dest_mgr_init_destination(j_compress_ptr cinfo)
{
struct jpeg_encoder *This = encoder_from_compress(cinfo);
This->dest_mgr.next_output_byte = This->dest_buffer;
This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
}
static jpeg_boolean dest_mgr_empty_output_buffer(j_compress_ptr cinfo)
{
struct jpeg_encoder *This = encoder_from_compress(cinfo);
HRESULT hr;
ULONG byteswritten;
hr = stream_write(This->stream, This->dest_buffer,
sizeof(This->dest_buffer), &byteswritten);
if (hr != S_OK || byteswritten == 0)
{
ERR("Failed writing data, hr=%x\n", hr);
return FALSE;
}
This->dest_mgr.next_output_byte = This->dest_buffer;
This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
return TRUE;
}
static void dest_mgr_term_destination(j_compress_ptr cinfo)
{
struct jpeg_encoder *This = encoder_from_compress(cinfo);
ULONG byteswritten;
HRESULT hr;
if (This->dest_mgr.free_in_buffer != sizeof(This->dest_buffer))
{
hr = stream_write(This->stream, This->dest_buffer,
sizeof(This->dest_buffer) - This->dest_mgr.free_in_buffer, &byteswritten);
if (hr != S_OK || byteswritten == 0)
ERR("Failed writing data, hr=%x\n", hr);
}
}
HRESULT CDECL jpeg_encoder_initialize(struct encoder* iface, IStream *stream)
{
struct jpeg_encoder *This = impl_from_encoder(iface);
jmp_buf jmpbuf;
pjpeg_std_error(&This->jerr);
This->jerr.error_exit = error_exit_fn;
This->jerr.emit_message = emit_message_fn;
This->cinfo.err = &This->jerr;
This->cinfo.client_data = jmpbuf;
if (setjmp(jmpbuf))
return E_FAIL;
pjpeg_CreateCompress(&This->cinfo, JPEG_LIB_VERSION, sizeof(struct jpeg_compress_struct));
This->stream = stream;
This->dest_mgr.next_output_byte = This->dest_buffer;
This->dest_mgr.free_in_buffer = sizeof(This->dest_buffer);
This->dest_mgr.init_destination = dest_mgr_init_destination;
This->dest_mgr.empty_output_buffer = dest_mgr_empty_output_buffer;
This->dest_mgr.term_destination = dest_mgr_term_destination;
This->cinfo.dest = &This->dest_mgr;
This->cinfo_initialized = TRUE;
return S_OK;
}
HRESULT CDECL jpeg_encoder_get_supported_format(struct encoder* iface, GUID *pixel_format,
DWORD *bpp, BOOL *indexed)
{
int i;
for (i=0; compress_formats[i].guid; i++)
{
if (memcmp(compress_formats[i].guid, pixel_format, sizeof(GUID)) == 0)
break;
}
if (!compress_formats[i].guid) i = 0;
*pixel_format = *compress_formats[i].guid;
*bpp = compress_formats[i].bpp;
*indexed = FALSE;
return S_OK;
}
HRESULT CDECL jpeg_encoder_create_frame(struct encoder* iface, const struct encoder_frame *frame)
{
struct jpeg_encoder *This = impl_from_encoder(iface);
jmp_buf jmpbuf;
int i;
This->encoder_frame = *frame;
if (setjmp(jmpbuf))
return E_FAIL;
This->cinfo.client_data = jmpbuf;
for (i=0; compress_formats[i].guid; i++)
{
if (memcmp(compress_formats[i].guid, &frame->pixel_format, sizeof(GUID)) == 0)
break;
}
This->format = &compress_formats[i];
This->cinfo.image_width = frame->width;
This->cinfo.image_height = frame->height;
This->cinfo.input_components = This->format->num_components;
This->cinfo.in_color_space = This->format->color_space;
pjpeg_set_defaults(&This->cinfo);
if (frame->dpix != 0.0 && frame->dpiy != 0.0)
{
This->cinfo.density_unit = 1; /* dots per inch */
This->cinfo.X_density = frame->dpix;
This->cinfo.Y_density = frame->dpiy;
}
pjpeg_start_compress(&This->cinfo, TRUE);
return S_OK;
}
HRESULT CDECL jpeg_encoder_write_lines(struct encoder* iface, BYTE *data,
DWORD line_count, DWORD stride)
{
struct jpeg_encoder *This = impl_from_encoder(iface);
jmp_buf jmpbuf;
BYTE *swapped_data = NULL, *current_row;
UINT line;
int row_size;
if (setjmp(jmpbuf))
{
free(swapped_data);
return E_FAIL;
}
This->cinfo.client_data = jmpbuf;
row_size = This->format->bpp / 8 * This->encoder_frame.width;
if (This->format->swap_rgb)
{
swapped_data = malloc(row_size);
if (!swapped_data)
return E_OUTOFMEMORY;
}
for (line=0; line < line_count; line++)
{
if (This->format->swap_rgb)
{
UINT x;
memcpy(swapped_data, data + (stride * line), row_size);
for (x=0; x < This->encoder_frame.width; x++)
{
BYTE b;
b = swapped_data[x*3];
swapped_data[x*3] = swapped_data[x*3+2];
swapped_data[x*3+2] = b;
}
current_row = swapped_data;
}
else
current_row = data + (stride * line);
if (!pjpeg_write_scanlines(&This->cinfo, &current_row, 1))
{
ERR("failed writing scanlines\n");
free(swapped_data);
return E_FAIL;
}
}
free(swapped_data);
return S_OK;
}
HRESULT CDECL jpeg_encoder_commit_frame(struct encoder* iface)
{
struct jpeg_encoder *This = impl_from_encoder(iface);
jmp_buf jmpbuf;
if (setjmp(jmpbuf))
return E_FAIL;
This->cinfo.client_data = jmpbuf;
pjpeg_finish_compress(&This->cinfo);
return S_OK;
}
HRESULT CDECL jpeg_encoder_commit_file(struct encoder* iface)
{
return S_OK;
}
void CDECL jpeg_encoder_destroy(struct encoder* iface)
{
struct jpeg_encoder *This = impl_from_encoder(iface);
if (This->cinfo_initialized)
pjpeg_destroy_compress(&This->cinfo);
RtlFreeHeap(GetProcessHeap(), 0, This);
};
static const struct encoder_funcs jpeg_encoder_vtable = {
jpeg_encoder_initialize,
jpeg_encoder_get_supported_format,
jpeg_encoder_create_frame,
jpeg_encoder_write_lines,
jpeg_encoder_commit_frame,
jpeg_encoder_commit_file,
jpeg_encoder_destroy
};
HRESULT CDECL jpeg_encoder_create(struct encoder_info *info, struct encoder **result)
{
struct jpeg_encoder *This;
if (!load_libjpeg())
{
ERR("Failed writing JPEG because unable to find %s\n", SONAME_LIBJPEG);
return E_FAIL;
}
This = RtlAllocateHeap(GetProcessHeap(), 0, sizeof(struct jpeg_encoder));
if (!This) return E_OUTOFMEMORY;
This->encoder.vtable = &jpeg_encoder_vtable;
This->stream = NULL;
This->cinfo_initialized = FALSE;
*result = &This->encoder;
info->flags = ENCODER_FLAGS_SUPPORTS_METADATA;
info->container_format = GUID_ContainerFormatJpeg;
info->clsid = CLSID_WICJpegEncoder;
info->encoder_options[0] = ENCODER_OPTION_IMAGE_QUALITY;
info->encoder_options[1] = ENCODER_OPTION_BITMAP_TRANSFORM;
info->encoder_options[2] = ENCODER_OPTION_LUMINANCE;
info->encoder_options[3] = ENCODER_OPTION_CHROMINANCE;
info->encoder_options[4] = ENCODER_OPTION_YCRCB_SUBSAMPLING;
info->encoder_options[5] = ENCODER_OPTION_SUPPRESS_APP0;
info->encoder_options[6] = ENCODER_OPTION_END;
return S_OK;
}
#else /* !defined(SONAME_LIBJPEG) */
HRESULT CDECL jpeg_decoder_create(struct decoder_info *info, struct decoder **result)
{
ERR("Trying to load JPEG picture, but JPEG support is not compiled in.\n");
return E_FAIL;
}
HRESULT CDECL jpeg_encoder_create(struct encoder_info *info, struct encoder **result)
{
ERR("Trying to save JPEG picture, but JPEG support is not compiled in.\n");
return E_FAIL;
}
#endif