int
gs_jpeg_finish_decompress(stream_DCT_state * st)
{
if (setjmp(st->data.common->exit_jmpbuf))
return_error(gs_jpeg_log_error(st));
return (int)jpeg_finish_decompress(&st->data.decompress->dinfo);
}
int
gs_jpeg_read_header(stream_DCT_state * st,
boolean require_image)
{
if (setjmp(st->data.common->exit_jmpbuf))
return_error(gs_jpeg_log_error(st));
return jpeg_read_header(&st->data.decompress->dinfo, require_image);
}
int
gs_jpeg_set_defaults(stream_DCT_state * st)
{
if (setjmp(find_jmp_buf(st->data.common->exit_jmpbuf)))
return_error(gs_jpeg_log_error(st));
jpeg_set_defaults(&st->data.compress->cinfo);
return 0;
}
int
gs_jpeg_destroy(stream_DCT_state * st)
{
if (setjmp(find_jmp_buf(st->data.common->exit_jmpbuf)))
return_error(gs_jpeg_log_error(st));
jpeg_destroy((j_common_ptr) & st->data.compress->cinfo);
return 0;
}
int
gs_jpeg_start_compress(stream_DCT_state * st,
boolean write_all_tables)
{
if (setjmp(find_jmp_buf(st->data.common->exit_jmpbuf)))
return_error(gs_jpeg_log_error(st));
jpeg_start_compress(&st->data.compress->cinfo, write_all_tables);
return 0;
}
int
gs_jpeg_set_colorspace(stream_DCT_state * st,
J_COLOR_SPACE colorspace)
{
if (setjmp(find_jmp_buf(st->data.common->exit_jmpbuf)))
return_error(gs_jpeg_log_error(st));
jpeg_set_colorspace(&st->data.compress->cinfo, colorspace);
return 0;
}
int
gs_jpeg_read_scanlines(stream_DCT_state * st,
JSAMPARRAY scanlines,
int max_lines)
{
if (setjmp(st->data.common->exit_jmpbuf))
return_error(gs_jpeg_log_error(st));
return (int)jpeg_read_scanlines(&st->data.decompress->dinfo,
scanlines, (JDIMENSION) max_lines);
}
JHUFF_TBL *
gs_jpeg_alloc_huff_table(stream_DCT_state * st)
{
if (setjmp(find_jmp_buf(st->data.common->exit_jmpbuf))) {
gs_jpeg_log_error(st);
return NULL;
}
return jpeg_alloc_huff_table((j_common_ptr)
& st->data.compress->cinfo);
}
int
gs_jpeg_set_quality(stream_DCT_state * st,
int quality, boolean force_baseline)
{
if (setjmp(find_jmp_buf(st->data.common->exit_jmpbuf)))
return_error(gs_jpeg_log_error(st));
jpeg_set_quality(&st->data.compress->cinfo,
quality, force_baseline);
return 0;
}
int
gs_jpeg_write_scanlines(stream_DCT_state * st,
JSAMPARRAY scanlines,
int num_lines)
{
if (setjmp(find_jmp_buf(st->data.common->exit_jmpbuf)))
return_error(gs_jpeg_log_error(st));
return (int)jpeg_write_scanlines(&st->data.compress->cinfo,
scanlines, (JDIMENSION) num_lines);
}
int
gs_jpeg_create_decompress(stream_DCT_state * st)
{ /* Initialize error handling */
gs_jpeg_error_setup(st);
/* Establish the setjmp return context for gs_jpeg_error_exit to use. */
if (setjmp(st->data.common->exit_jmpbuf))
return_error(gs_jpeg_log_error(st));
jpeg_stream_data_common_init(st->data.decompress);
jpeg_create_decompress(&st->data.decompress->dinfo);
return 0;
}
int
gs_jpeg_start_decompress(stream_DCT_state * st)
{
if (setjmp(st->data.common->exit_jmpbuf))
return_error(gs_jpeg_log_error(st));
#if JPEG_LIB_VERSION > 55
return (int)jpeg_start_decompress(&st->data.decompress->dinfo);
#else
/* in IJG version 5, jpeg_start_decompress had no return value */
jpeg_start_decompress(&st->data.decompress->dinfo);
return 1;
#endif
}
int
gs_jpeg_create_compress(stream_DCT_state * st)
{ /* Initialize error handling */
gs_jpeg_error_setup(st);
/* Establish the setjmp return context for gs_jpeg_error_exit to use. */
if (setjmp(find_jmp_buf(st->data.common->exit_jmpbuf)))
return_error(gs_jpeg_log_error(st));
jpeg_stream_data_common_init(st->data.compress);
if (gs_jpeg_mem_init (st->memory, (j_common_ptr)&st->data.compress->cinfo) < 0)
return_error(gs_error_VMerror);
jpeg_create_compress(&st->data.compress->cinfo);
return 0;
}
