static void
fz_dct_mem_free(j_common_ptr cinfo, void *object, size_t size)
{
fz_dctd *state = JZ_DCT_STATE_FROM_CINFO(cinfo);
UNUSED(size);
fz_free(state->ctx, object);
}
static boolean fill_input_buffer(j_decompress_ptr cinfo)
{
struct jpeg_source_mgr *src = cinfo->src;
fz_dctd *state = JZ_DCT_STATE_FROM_CINFO(cinfo);
fz_stream *curr_stm = state->curr_stm;
fz_context *ctx = curr_stm->ctx;
curr_stm->rp = curr_stm->wp;
fz_try(ctx)
{
src->bytes_in_buffer = fz_available(curr_stm, 1);
}
fz_catch(ctx)
{
fz_rethrow_if(ctx, FZ_ERROR_TRYLATER);
return 0;
}
src->next_input_byte = curr_stm->rp;
if (src->bytes_in_buffer == 0)
{
static unsigned char eoi[2] = { 0xFF, JPEG_EOI };
fz_warn(state->ctx, "premature end of file in jpeg");
src->next_input_byte = eoi;
src->bytes_in_buffer = 2;
}
return 1;
}
static void error_exit_dct(j_common_ptr cinfo)
{
char msg[JMSG_LENGTH_MAX];
fz_dctd *state = JZ_DCT_STATE_FROM_CINFO(cinfo);
fz_context *ctx = state->ctx;
cinfo->err->format_message(cinfo, msg);
fz_throw(ctx, FZ_ERROR_GENERIC, "jpeg error: %s", msg);
}
static void
fz_dct_mem_term(struct jpeg_decompress_struct *cinfo)
{
if (cinfo->client_data)
{
fz_dctd *state = JZ_DCT_STATE_FROM_CINFO(cinfo);
fz_free(state->ctx, cinfo->client_data);
cinfo->client_data = NULL;
}
}
static void error_exit(j_common_ptr cinfo)
{
fz_dctd *state = JZ_DCT_STATE_FROM_CINFO(cinfo);
cinfo->err->format_message(cinfo, state->msg);
longjmp(state->jb, 1);
}
static void *
fz_dct_mem_alloc(j_common_ptr cinfo, size_t size)
{
fz_dctd *state = JZ_DCT_STATE_FROM_CINFO(cinfo);
return fz_malloc(state->ctx, size);
}
