write_os2_header (j_decompress_ptr cinfo, bmp_dest_ptr dest)
/* Write an OS2-style BMP file header, including colormap if needed */
{
char bmpfileheader[14];
char bmpcoreheader[12];
INT32 headersize, bfSize;
int bits_per_pixel, cmap_entries;
/* Compute colormap size and total file size */
if (cinfo->out_color_space == JCS_RGB) {
if (cinfo->quantize_colors) {
/* Colormapped RGB */
bits_per_pixel = 8;
cmap_entries = 256;
} else {
/* Unquantized, full color RGB */
bits_per_pixel = 24;
cmap_entries = 0;
}
} else {
/* Grayscale output. We need to fake a 256-entry colormap. */
bits_per_pixel = 8;
cmap_entries = 256;
}
/* File size */
headersize = 14 + 12 + cmap_entries * 3; /* Header and colormap */
bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height;
/* Set unused fields of header to 0 */
MEMZERO(bmpfileheader, SIZEOF(bmpfileheader));
MEMZERO(bmpcoreheader, SIZEOF(bmpcoreheader));
/* Fill the file header */
bmpfileheader[0] = 0x42; /* first 2 bytes are ASCII 'B', 'M' */
bmpfileheader[1] = 0x4D;
PUT_4B(bmpfileheader, 2, bfSize); /* bfSize */
/* we leave bfReserved1 & bfReserved2 = 0 */
PUT_4B(bmpfileheader, 10, headersize); /* bfOffBits */
/* Fill the info header (Microsoft calls this a BITMAPCOREHEADER) */
PUT_2B(bmpcoreheader, 0, 12); /* bcSize */
PUT_2B(bmpcoreheader, 4, cinfo->output_width); /* bcWidth */
PUT_2B(bmpcoreheader, 6, cinfo->output_height); /* bcHeight */
PUT_2B(bmpcoreheader, 8, 1); /* bcPlanes - must be 1 */
PUT_2B(bmpcoreheader, 10, bits_per_pixel); /* bcBitCount */
if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14)
ERREXIT(cinfo, JERR_FILE_WRITE);
if (JFWRITE(dest->pub.output_file, bmpcoreheader, 12) != (size_t) 12)
ERREXIT(cinfo, JERR_FILE_WRITE);
if (cmap_entries > 0)
write_colormap(cinfo, dest, cmap_entries, 3);
}
write_os2_header (j_decompress_ptr cinfo, bmp_dest_ptr dest)
{
char bmpfileheader[14];
char bmpcoreheader[12];
INT32 headersize, bfSize;
int bits_per_pixel, cmap_entries;
if (cinfo->out_color_space == JCS_RGB) {
if (cinfo->quantize_colors) {
bits_per_pixel = 8;
cmap_entries = 256;
} else {
bits_per_pixel = 24;
cmap_entries = 0;
}
} else {
bits_per_pixel = 8;
cmap_entries = 256;
}
headersize = 14 + 12 + cmap_entries * 3;
bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height;
MEMZERO(bmpfileheader, SIZEOF(bmpfileheader));
MEMZERO(bmpcoreheader, SIZEOF(bmpcoreheader));
bmpfileheader[0] = 0x42;
bmpfileheader[1] = 0x4D;
PUT_4B(bmpfileheader, 2, bfSize);
PUT_4B(bmpfileheader, 10, headersize);
PUT_2B(bmpcoreheader, 0, 12);
PUT_2B(bmpcoreheader, 4, cinfo->output_width);
PUT_2B(bmpcoreheader, 6, cinfo->output_height);
PUT_2B(bmpcoreheader, 8, 1);
PUT_2B(bmpcoreheader, 10, bits_per_pixel);
if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14)
ERREXIT(cinfo, JERR_FILE_WRITE);
if (JFWRITE(dest->pub.output_file, bmpcoreheader, 12) != (size_t) 12)
ERREXIT(cinfo, JERR_FILE_WRITE);
if (cmap_entries > 0)
write_colormap(cinfo, dest, cmap_entries, 3);
}
put_pixel_rows(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
JDIMENSION rows_supplied)
{
ppm_dest_ptr dest = (ppm_dest_ptr)dinfo;
(void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
}
METHODDEF void
put_demapped_rgb (decompress_info_ptr cinfo, int num_rows,
JSAMPIMAGE pixel_data)
{
FILE * outfile = cinfo->output_file;
register JSAMPROW ptr;
register char * row_bufferptr;
register JSAMPROW color_map0 = cinfo->colormap[0];
register JSAMPROW color_map1 = cinfo->colormap[1];
register JSAMPROW color_map2 = cinfo->colormap[2];
register int pixval;
register long col;
long width = cinfo->image_width;
int row;
for (row = 0; row < num_rows; row++) {
ptr = pixel_data[0][row];
row_bufferptr = row_buffer;
for (col = width; col > 0; col--) {
pixval = GETJSAMPLE(*ptr++);
*row_bufferptr++ = (char) GETJSAMPLE(color_map0[pixval]);
*row_bufferptr++ = (char) GETJSAMPLE(color_map1[pixval]);
*row_bufferptr++ = (char) GETJSAMPLE(color_map2[pixval]);
}
(void) JFWRITE(outfile, row_buffer, 3*width);
}
}
METHODDEF void
write_backing_store(j_common_ptr cinfo, backing_store_ptr info, void FAR * buffer_address, long file_offset, long byte_count)
{
if(fseek(info->temp_file, file_offset, SEEK_SET))
ERREXIT(cinfo, JERR_TFILE_SEEK);
if(JFWRITE(info->temp_file, buffer_address, byte_count) != (size_t) byte_count)
ERREXIT(cinfo, JERR_TFILE_WRITE);
}
flush_packet (gif_dest_ptr dinfo)
{
if (dinfo->bytesinpkt > 0) {
dinfo->packetbuf[0] = (char) dinfo->bytesinpkt++;
if (JFWRITE(dinfo->pub.output_file, dinfo->packetbuf, dinfo->bytesinpkt)
!= (size_t) dinfo->bytesinpkt)
ERREXIT(dinfo->cinfo, JERR_FILE_WRITE);
dinfo->bytesinpkt = 0;
}
}
METHODDEF void
write_backing_store (backing_store_ptr info, void FAR * buffer_address,
long file_offset, long byte_count)
{
if (fseek(info->temp_file, file_offset, SEEK_SET))
ERREXIT(methods, "fseek failed on temporary file");
if (JFWRITE(info->temp_file, buffer_address, byte_count)
!= (size_t) byte_count)
ERREXIT(methods, "fwrite failed on temporary file --- out of disk space?");
}
empty_output_buffer(j_compress_ptr cinfo)
{
my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
if (JFWRITE(dest->outfile, dest->buffer, OUTPUT_BUF_SIZE) !=
(size_t) OUTPUT_BUF_SIZE)
ERREXIT(cinfo, JERR_FILE_WRITE);
dest->pub.next_output_byte = dest->buffer;
dest->pub.free_in_buffer = OUTPUT_BUF_SIZE;
return TRUE;
}
flush_packet (gif_dest_ptr dinfo)
/* flush any accumulated data */
{
if (dinfo->bytesinpkt > 0) { /* never write zero-length packet */
dinfo->packetbuf[0] = (char) dinfo->bytesinpkt++;
if (JFWRITE(dinfo->pub.output_file, dinfo->packetbuf, dinfo->bytesinpkt)
!= (size_t) dinfo->bytesinpkt)
ERREXIT(dinfo->cinfo, JERR_FILE_WRITE);
dinfo->bytesinpkt = 0;
}
}
term_destination (j_compress_ptr cinfo)
{
my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
size_t datacount = OUTPUT_BUF_SIZE - dest->pub.free_in_buffer;
/* Write any data remaining in the buffer */
if (datacount > 0) {
if (JFWRITE(dest->outfile, dest->buffer, datacount) != datacount)
ERREXIT(cinfo, JERR_FILE_WRITE);
}
f_close(dest->outfile);
}
write_backing_store (j_common_ptr cinfo, backing_store_ptr info,
void FAR * buffer_address,
long file_offset, long byte_count)
{
if (fseek(info->temp_file, file_offset, SEEK_SET))
ERREXIT(cinfo, JERR_TFILE_SEEK);
size_t wrote = JFWRITE(info->temp_file, buffer_address, byte_count);
if(wrote != (size_t)byte_count) {
LOGD("write back store: offset(%d), buf(%p), fp(%p), wrote(%d) != byte_count(%d)", file_offset, buffer_address, info->temp_file, wrote, byte_count);
ERREXIT(cinfo, JERR_TFILE_WRITE);
}
}
copy_pixel_rows (j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
JDIMENSION rows_supplied)
{
ppm_dest_ptr dest = (ppm_dest_ptr) dinfo;
register char *bufferptr;
register JSAMPROW ptr;
register JDIMENSION col;
ptr = dest->pub.buffer[0];
bufferptr = dest->iobuffer;
for (col = dest->samples_per_row; col > 0; col--) {
PUTPPMSAMPLE(bufferptr, GETJSAMPLE(*ptr++));
}
(void) JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
}
term_destination (j_compress_ptr cinfo)
{
my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
size_t datacount = OUTPUT_BUF_SIZE - dest->pub.free_in_buffer;
/* Write any data remaining in the buffer */
if (datacount > 0) {
if (JFWRITE(dest->outfile, dest->buffer, datacount) != datacount)
ERREXIT(cinfo, JERR_FILE_WRITE);
}
JFFLUSH(dest->outfile);
/* Make sure we wrote the output file OK */
if (JFERROR(dest->outfile))
ERREXIT(cinfo, JERR_FILE_WRITE);
}
put_demapped_gray(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
JDIMENSION rows_supplied)
{
ppm_dest_ptr dest = (ppm_dest_ptr)dinfo;
register char *bufferptr;
register JSAMPROW ptr;
register JSAMPROW color_map = cinfo->colormap[0];
register JDIMENSION col;
ptr = dest->pub.buffer[0];
bufferptr = dest->iobuffer;
for (col = cinfo->output_width; col > 0; col--) {
PUTPPMSAMPLE(bufferptr, GETJSAMPLE(color_map[GETJSAMPLE(*ptr++)]));
}
(void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
}
term_destination (j_compress_ptr cinfo)
{
#ifndef USE_SYMBIAN
my_dest_ptr dest = (my_dest_ptr) cinfo->dest;
int datacount = OUTPUT_BUF_SIZE - dest->pub.free_in_buffer;
/* Write any data remaining in the buffer */
if (datacount > 0) {
if (JFWRITE(dest->outfile, dest->buffer, datacount) != datacount)
ERREXIT(cinfo, JERR_FILE_WRITE);
}
fflush(dest->outfile);
/* Make sure we wrote the output file OK */
if (ferror(dest->outfile))
ERREXIT(cinfo, JERR_FILE_WRITE);
#endif
}
put_cmyk(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
JDIMENSION rows_supplied)
{
ppm_dest_ptr dest = (ppm_dest_ptr)dinfo;
register char *bufferptr;
register JSAMPROW ptr;
register JDIMENSION col;
ptr = dest->pub.buffer[0];
bufferptr = dest->iobuffer;
for (col = cinfo->output_width; col > 0; col--) {
JSAMPLE r, g, b, c = *ptr++, m = *ptr++, y = *ptr++, k = *ptr++;
cmyk_to_rgb(c, m, y, k, &r, &g, &b);
PUTPPMSAMPLE(bufferptr, r);
PUTPPMSAMPLE(bufferptr, g);
PUTPPMSAMPLE(bufferptr, b);
}
(void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
}
METHODDEF void
put_gray_rows (decompress_info_ptr cinfo, int num_rows,
JSAMPIMAGE pixel_data)
{
FILE * outfile = cinfo->output_file;
register JSAMPROW ptr0;
register char * row_bufferptr;
register long col;
long width = cinfo->image_width;
int row;
for (row = 0; row < num_rows; row++) {
ptr0 = pixel_data[0][row];
row_bufferptr = row_buffer;
for (col = width; col > 0; col--) {
*row_bufferptr++ = (char) GETJSAMPLE(*ptr0++);
}
(void) JFWRITE(outfile, row_buffer, width);
}
}
put_rgb(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo, JDIMENSION rows_supplied)
{
ppm_dest_ptr dest = (ppm_dest_ptr)dinfo;
register char *bufferptr;
register JSAMPROW ptr;
register JDIMENSION col;
register int rindex = rgb_red[cinfo->out_color_space];
register int gindex = rgb_green[cinfo->out_color_space];
register int bindex = rgb_blue[cinfo->out_color_space];
register int ps = rgb_pixelsize[cinfo->out_color_space];
ptr = dest->pub.buffer[0];
bufferptr = dest->iobuffer;
for (col = cinfo->output_width; col > 0; col--) {
PUTPPMSAMPLE(bufferptr, ptr[rindex]);
PUTPPMSAMPLE(bufferptr, ptr[gindex]);
PUTPPMSAMPLE(bufferptr, ptr[bindex]);
ptr += ps;
}
(void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
}
copy_pixel_rows(j_decompress_ptr cinfo, djpeg_dest_ptr dinfo,
JDIMENSION rows_supplied)
{
ppm_dest_ptr dest = (ppm_dest_ptr)dinfo;
register char *bufferptr;
register JSAMPROW ptr;
#if BITS_IN_JSAMPLE != 8 || (!defined(HAVE_UNSIGNED_CHAR) && !defined(__CHAR_UNSIGNED__))
register JDIMENSION col;
#endif
ptr = dest->pub.buffer[0];
bufferptr = dest->iobuffer;
#if BITS_IN_JSAMPLE == 8 && (defined(HAVE_UNSIGNED_CHAR) || defined(__CHAR_UNSIGNED__))
MEMCOPY(bufferptr, ptr, dest->samples_per_row);
#else
for (col = dest->samples_per_row; col > 0; col--) {
PUTPPMSAMPLE(bufferptr, GETJSAMPLE(*ptr++));
}
#endif
(void)JFWRITE(dest->pub.output_file, dest->iobuffer, dest->buffer_width);
}
write_bmp_header (j_decompress_ptr cinfo, bmp_dest_ptr dest)
/* Write a Windows-style BMP file header, including colormap if needed */
{
char bmpfileheader[14];
char bmpinfoheader[40];
#define PUT_2B(array,offset,value) \
(array[offset] = (char) ((value) & 0xFF), \
array[offset+1] = (char) (((value) >> 8) & 0xFF))
#define PUT_4B(array,offset,value) \
(array[offset] = (char) ((value) & 0xFF), \
array[offset+1] = (char) (((value) >> 8) & 0xFF), \
array[offset+2] = (char) (((value) >> 16) & 0xFF), \
array[offset+3] = (char) (((value) >> 24) & 0xFF))
INT32 headersize, bfSize;
int bits_per_pixel, cmap_entries;
/* Compute colormap size and total file size */
if (cinfo->out_color_space == JCS_RGB) {
if (cinfo->quantize_colors) {
/* Colormapped RGB */
bits_per_pixel = 8;
cmap_entries = 256;
} else {
/* Unquantized, full color RGB */
bits_per_pixel = 24;
cmap_entries = 0;
}
} else {
/* Grayscale output. We need to fake a 256-entry colormap. */
bits_per_pixel = 8;
cmap_entries = 256;
}
/* File size */
headersize = 14 + 40 + cmap_entries * 4; /* Header and colormap */
bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height;
/* Set unused fields of header to 0 */
MEMZERO(bmpfileheader, SIZEOF(bmpfileheader));
MEMZERO(bmpinfoheader, SIZEOF(bmpinfoheader));
/* Fill the file header */
bmpfileheader[0] = 0x42; /* first 2 bytes are ASCII 'B', 'M' */
bmpfileheader[1] = 0x4D;
PUT_4B(bmpfileheader, 2, bfSize); /* bfSize */
/* we leave bfReserved1 & bfReserved2 = 0 */
PUT_4B(bmpfileheader, 10, headersize); /* bfOffBits */
/* Fill the info header (Microsoft calls this a BITMAPINFOHEADER) */
PUT_2B(bmpinfoheader, 0, 40); /* biSize */
PUT_4B(bmpinfoheader, 4, cinfo->output_width); /* biWidth */
PUT_4B(bmpinfoheader, 8, cinfo->output_height); /* biHeight */
PUT_2B(bmpinfoheader, 12, 1); /* biPlanes - must be 1 */
PUT_2B(bmpinfoheader, 14, bits_per_pixel); /* biBitCount */
/* we leave biCompression = 0, for none */
/* we leave biSizeImage = 0; this is correct for uncompressed data */
if (cinfo->density_unit == 2) { /* if have density in dots/cm, then */
PUT_4B(bmpinfoheader, 24, (INT32) (cinfo->X_density*100)); /* XPels/M */
PUT_4B(bmpinfoheader, 28, (INT32) (cinfo->Y_density*100)); /* XPels/M */
}
PUT_2B(bmpinfoheader, 32, cmap_entries); /* biClrUsed */
/* we leave biClrImportant = 0 */
if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14)
ERREXIT(cinfo, JERR_FILE_WRITE);
if (JFWRITE(dest->pub.output_file, bmpinfoheader, 40) != (size_t) 40)
ERREXIT(cinfo, JERR_FILE_WRITE);
if (cmap_entries > 0)
write_colormap(cinfo, dest, cmap_entries, 4);
}
write_bmp_header (j_decompress_ptr cinfo, bmp_dest_ptr dest)
{
char bmpfileheader[14];
char bmpinfoheader[40];
#define PUT_2B(array,offset,value) \
(array[offset] = (char) ((value) & 0xFF), \
array[offset+1] = (char) (((value) >> 8) & 0xFF))
#define PUT_4B(array,offset,value) \
(array[offset] = (char) ((value) & 0xFF), \
array[offset+1] = (char) (((value) >> 8) & 0xFF), \
array[offset+2] = (char) (((value) >> 16) & 0xFF), \
array[offset+3] = (char) (((value) >> 24) & 0xFF))
INT32 headersize, bfSize;
int bits_per_pixel, cmap_entries;
if (cinfo->out_color_space == JCS_RGB) {
if (cinfo->quantize_colors) {
bits_per_pixel = 8;
cmap_entries = 256;
} else {
bits_per_pixel = 24;
cmap_entries = 0;
}
} else {
bits_per_pixel = 8;
cmap_entries = 256;
}
headersize = 14 + 40 + cmap_entries * 4;
bfSize = headersize + (INT32) dest->row_width * (INT32) cinfo->output_height;
MEMZERO(bmpfileheader, SIZEOF(bmpfileheader));
MEMZERO(bmpinfoheader, SIZEOF(bmpinfoheader));
bmpfileheader[0] = 0x42;
bmpfileheader[1] = 0x4D;
PUT_4B(bmpfileheader, 2, bfSize);
PUT_4B(bmpfileheader, 10, headersize);
PUT_2B(bmpinfoheader, 0, 40);
PUT_4B(bmpinfoheader, 4, cinfo->output_width);
PUT_4B(bmpinfoheader, 8, cinfo->output_height);
PUT_2B(bmpinfoheader, 12, 1);
PUT_2B(bmpinfoheader, 14, bits_per_pixel);
if (cinfo->density_unit == 2) {
PUT_4B(bmpinfoheader, 24, (INT32) (cinfo->X_density*100));
PUT_4B(bmpinfoheader, 28, (INT32) (cinfo->Y_density*100));
}
PUT_2B(bmpinfoheader, 32, cmap_entries);
if (JFWRITE(dest->pub.output_file, bmpfileheader, 14) != (size_t) 14)
ERREXIT(cinfo, JERR_FILE_WRITE);
if (JFWRITE(dest->pub.output_file, bmpinfoheader, 40) != (size_t) 40)
ERREXIT(cinfo, JERR_FILE_WRITE);
if (cmap_entries > 0)
write_colormap(cinfo, dest, cmap_entries, 4);
}
int
main (int argc, char **argv)
{
struct jpeg_decompress_struct srcinfo;
struct jpeg_compress_struct dstinfo;
struct jpeg_error_mgr jsrcerr, jdsterr;
#ifdef PROGRESS_REPORT
struct cdjpeg_progress_mgr progress;
#endif
jvirt_barray_ptr * src_coef_arrays;
jvirt_barray_ptr * dst_coef_arrays;
int file_index;
/* We assume all-in-memory processing and can therefore use only a
* single file pointer for sequential input and output operation.
*/
FILE * fp;
unsigned char *inbuffer = NULL;
unsigned long insize = 0;
unsigned char *outbuffer = NULL;
unsigned long outsize = 0;
/* On Mac, fetch a command line. */
#ifdef USE_CCOMMAND
argc = ccommand(&argv);
#endif
progname = argv[0];
if (progname == NULL || progname[0] == 0)
progname = "jpegtran"; /* in case C library doesn't provide it */
/* Initialize the JPEG decompression object with default error handling. */
srcinfo.err = jpeg_std_error(&jsrcerr);
jpeg_create_decompress(&srcinfo);
/* Initialize the JPEG compression object with default error handling. */
dstinfo.err = jpeg_std_error(&jdsterr);
jpeg_create_compress(&dstinfo);
dstinfo.use_moz_defaults = TRUE;
/* Scan command line to find file names.
* It is convenient to use just one switch-parsing routine, but the switch
* values read here are mostly ignored; we will rescan the switches after
* opening the input file. Also note that most of the switches affect the
* destination JPEG object, so we parse into that and then copy over what
* needs to affects the source too.
*/
file_index = parse_switches(&dstinfo, argc, argv, 0, FALSE);
jsrcerr.trace_level = jdsterr.trace_level;
srcinfo.mem->max_memory_to_use = dstinfo.mem->max_memory_to_use;
#ifdef TWO_FILE_COMMANDLINE
/* Must have either -outfile switch or explicit output file name */
if (outfilename == NULL) {
if (file_index != argc-2) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
outfilename = argv[file_index+1];
} else {
if (file_index != argc-1) {
fprintf(stderr, "%s: must name one input and one output file\n",
progname);
usage();
}
}
#else
/* Unix style: expect zero or one file name */
if (file_index < argc-1) {
fprintf(stderr, "%s: only one input file\n", progname);
usage();
}
#endif /* TWO_FILE_COMMANDLINE */
/* Open the input file. */
if (file_index < argc) {
if ((fp = fopen(argv[file_index], READ_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s for reading\n", progname, argv[file_index]);
exit(EXIT_FAILURE);
}
} else {
/* default input file is stdin */
fp = read_stdin();
}
#ifdef PROGRESS_REPORT
start_progress_monitor((j_common_ptr) &dstinfo, &progress);
#endif
/* Specify data source for decompression */
memsrc = dstinfo.use_moz_defaults; /* needed to revert to original */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
if (memsrc) {
size_t nbytes;
do {
inbuffer = (unsigned char *)realloc(inbuffer, insize + INPUT_BUF_SIZE);
if (inbuffer == NULL) {
fprintf(stderr, "%s: memory allocation failure\n", progname);
exit(EXIT_FAILURE);
}
nbytes = JFREAD(fp, &inbuffer[insize], INPUT_BUF_SIZE);
if (nbytes < INPUT_BUF_SIZE && ferror(fp)) {
if (file_index < argc)
fprintf(stderr, "%s: can't read from %s\n", progname,
argv[file_index]);
else
fprintf(stderr, "%s: can't read from stdin\n", progname);
}
insize += (unsigned long)nbytes;
} while (nbytes == INPUT_BUF_SIZE);
jpeg_mem_src(&srcinfo, inbuffer, insize);
} else
#endif
jpeg_stdio_src(&srcinfo, fp);
/* Enable saving of extra markers that we want to copy */
jcopy_markers_setup(&srcinfo, copyoption);
/* Read file header */
(void) jpeg_read_header(&srcinfo, TRUE);
/* Any space needed by a transform option must be requested before
* jpeg_read_coefficients so that memory allocation will be done right.
*/
#if TRANSFORMS_SUPPORTED
/* Fail right away if -perfect is given and transformation is not perfect.
*/
if (!jtransform_request_workspace(&srcinfo, &transformoption)) {
fprintf(stderr, "%s: transformation is not perfect\n", progname);
exit(EXIT_FAILURE);
}
#endif
/* Read source file as DCT coefficients */
src_coef_arrays = jpeg_read_coefficients(&srcinfo);
/* Initialize destination compression parameters from source values */
jpeg_copy_critical_parameters(&srcinfo, &dstinfo);
/* Adjust destination parameters if required by transform options;
* also find out which set of coefficient arrays will hold the output.
*/
#if TRANSFORMS_SUPPORTED
dst_coef_arrays = jtransform_adjust_parameters(&srcinfo, &dstinfo,
src_coef_arrays,
&transformoption);
#else
dst_coef_arrays = src_coef_arrays;
#endif
/* Close input file, if we opened it.
* Note: we assume that jpeg_read_coefficients consumed all input
* until JPEG_REACHED_EOI, and that jpeg_finish_decompress will
* only consume more while (! cinfo->inputctl->eoi_reached).
* We cannot call jpeg_finish_decompress here since we still need the
* virtual arrays allocated from the source object for processing.
*/
if (fp != stdin)
fclose(fp);
/* Open the output file. */
if (outfilename != NULL) {
if ((fp = fopen(outfilename, WRITE_BINARY)) == NULL) {
fprintf(stderr, "%s: can't open %s for writing\n", progname, outfilename);
exit(EXIT_FAILURE);
}
} else {
/* default output file is stdout */
fp = write_stdout();
}
/* Adjust default compression parameters by re-parsing the options */
file_index = parse_switches(&dstinfo, argc, argv, 0, TRUE);
/* Specify data destination for compression */
#if JPEG_LIB_VERSION >= 80 || defined(MEM_SRCDST_SUPPORTED)
if (dstinfo.use_moz_defaults)
jpeg_mem_dest(&dstinfo, &outbuffer, &outsize);
else
#endif
jpeg_stdio_dest(&dstinfo, fp);
/* Start compressor (note no image data is actually written here) */
jpeg_write_coefficients(&dstinfo, dst_coef_arrays);
/* Copy to the output file any extra markers that we want to preserve */
jcopy_markers_execute(&srcinfo, &dstinfo, copyoption);
/* Execute image transformation, if any */
#if TRANSFORMS_SUPPORTED
jtransform_execute_transformation(&srcinfo, &dstinfo,
src_coef_arrays,
&transformoption);
#endif
/* Finish compression and release memory */
jpeg_finish_compress(&dstinfo);
if (dstinfo.use_moz_defaults) {
size_t nbytes;
unsigned char *buffer = outbuffer;
unsigned long size = outsize;
if (insize < size) {
size = insize;
buffer = inbuffer;
}
nbytes = JFWRITE(fp, buffer, size);
if (nbytes < size && ferror(fp)) {
if (file_index < argc)
fprintf(stderr, "%s: can't write to %s\n", progname,
argv[file_index]);
else
fprintf(stderr, "%s: can't write to stdout\n", progname);
}
}
jpeg_destroy_compress(&dstinfo);
(void) jpeg_finish_decompress(&srcinfo);
jpeg_destroy_decompress(&srcinfo);
/* Close output file, if we opened it */
if (fp != stdout)
fclose(fp);
#ifdef PROGRESS_REPORT
end_progress_monitor((j_common_ptr) &dstinfo);
#endif
/* All done. */
exit(jsrcerr.num_warnings + jdsterr.num_warnings ?EXIT_WARNING:EXIT_SUCCESS);
return 0; /* suppress no-return-value warnings */
}
