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#include "amg.h"
#include "api__jpeg.h"
#include <setjmp.h>
extern "C"
{
#undef FAR
#include "jpeglib.h"
// our reader...
static void init_source( j_decompress_ptr cinfo )
{}
static const JOCTET jpeg_eof[] = { (JOCTET)0xFF, (JOCTET)JPEG_EOI };
static boolean fill_input_buffer( j_decompress_ptr cinfo )
{
cinfo->src->next_input_byte = jpeg_eof;
cinfo->src->bytes_in_buffer = 2;
return TRUE;
}
static void skip_input_data( j_decompress_ptr cinfo, long num_bytes )
{
//my_src_ptr src = (my_src_ptr) cinfo->src;
if ( num_bytes > 0 )
{
if ( num_bytes > (long)cinfo->src->bytes_in_buffer )
{
fill_input_buffer( cinfo );
}
else
{
cinfo->src->next_input_byte += (size_t)num_bytes;
cinfo->src->bytes_in_buffer -= (size_t)num_bytes;
}
}
}
static void term_source( j_decompress_ptr cinfo )
{}
typedef struct
{
jpeg_destination_mgr pub;
uint8_t *buf;
int len;
} my_destination_mgr;
void init_destination( j_compress_ptr cinfo );
boolean empty_output_buffer( j_compress_ptr cinfo );
void term_destination( j_compress_ptr cinfo );
static void wasabi_jpgload_error_exit( j_common_ptr cinfo )
{
jmp_buf *stack_env = (jmp_buf *)cinfo->client_data;
longjmp( *stack_env, 1 );
}
};
int AMGSucks::WriteAlbumArt(const void *data, size_t data_len, void **out, int *out_len)
{
*out = 0;
jmp_buf stack_env;
jpeg_decompress_struct cinfo_dec={0};
jpeg_compress_struct cinfo={0};
cinfo.client_data=&stack_env;
cinfo_dec.client_data=&stack_env;
if (setjmp(stack_env))
{
// longjmp will goto here
jpeg_destroy_decompress(&cinfo_dec);
jpeg_destroy_compress(&cinfo);
return 1;
}
jpeg_error_mgr jerr;
jpeg_source_mgr src = {(const JOCTET *)data,data_len,init_source,fill_input_buffer,skip_input_data,jpeg_resync_to_restart,term_source};
cinfo_dec.err = jpeg_std_error(&jerr);
jpeg_create_decompress(&cinfo_dec);
cinfo_dec.err->error_exit = wasabi_jpgload_error_exit;
cinfo_dec.src = &src;
if (jpeg_read_header(&cinfo_dec, TRUE) == JPEG_HEADER_OK)
{
cinfo.err = cinfo_dec.err;
jpeg_create_compress(&cinfo);
cinfo.err->error_exit = wasabi_jpgload_error_exit;
my_destination_mgr dest = {{0,65536,init_destination,empty_output_buffer,term_destination},0,65536};
dest.buf = (uint8_t *)WASABI_API_MEMMGR->sysMalloc(65536);
dest.pub.next_output_byte = dest.buf;
cinfo.dest = (jpeg_destination_mgr*)&dest;
cinfo.image_width = cinfo_dec.image_width;
cinfo.image_height = cinfo_dec.image_height;
cinfo.input_components = 4;
cinfo.in_color_space = JCS_RGB;
jpeg_copy_critical_parameters(&cinfo_dec, &cinfo);
jvirt_barray_ptr *stuff = jpeg_read_coefficients(&cinfo_dec);
jpeg_write_coefficients(&cinfo, stuff);
const char *blah = "AMG/AOL";
jpeg_write_marker(&cinfo, JPEG_COM, (JOCTET *)blah, (unsigned int)strlen(blah));
jpeg_finish_compress(&cinfo);
*out = dest.buf;
*out_len = dest.len - (int)dest.pub.free_in_buffer;
jpeg_destroy_decompress(&cinfo_dec);
jpeg_destroy_compress(&cinfo);
return 0;
}
return 1;
}
#define CBCLASS AMGSucks
START_DISPATCH;
CB(WRITEALBUMART, WriteAlbumArt);
END_DISPATCH;
#undef CBCLASS
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