Increase JPG/MP3 in-memory threshold

- maximum size 512 MB instead of 64 MB - verbose output if JPGs are too large for in-memory (and packJPG is used as fallback)

Author: schnaader

contrib/packjpg/precomp_jpg.h

@@ -1,6 +1,8 @@
 // Motion JPEG DHT header
 // JPEG DHT Segment for YCrCb omitted from MJPEG data
 
+#define JPG_MAX_MEMORY_SIZE 512 * 1024 * 1024
+
 #define MJPGDHT_LEN 420
 unsigned char MJPGDHT[MJPGDHT_LEN] = {
 0xFF,0xC4,0x01,0xA2,

contrib/packmp3/precomp_mp3.h

@@ -3,7 +3,7 @@
 #include "pmp3tbl.h"
 #undef PRECOMP_MP3
 
-#define MP3_MAX_MEMORY_SIZE 64 * 1024 * 1024
+#define MP3_MAX_MEMORY_SIZE 512 * 1024 * 1024
 
 // function to convert MP3 to PMP and vice versa, file to file
 bool pmplib_convert_file2file( char* in, char* out, char* msg );

precomp.cpp

@@ -4857,7 +4857,7 @@ while (fin_pos < fin_length) {
  unsigned char* jpg_mem_in = NULL;
  unsigned char* jpg_mem_out = NULL;
  unsigned int jpg_mem_out_size = -1;
- bool in_memory = (recompressed_data_length <= MAX_IO_BUFFER_SIZE);
+ bool in_memory = (recompressed_data_length <= JPG_MAX_MEMORY_SIZE);
  bool recompress_success = false;
 
  if (in_memory) {
@@ -6587,7 +6587,7 @@ void try_decompression_jpg (long long jpg_length, bool progressive_jpg) {
  unsigned char* jpg_mem_in = NULL;
  unsigned char* jpg_mem_out = NULL;
  unsigned int jpg_mem_out_size = -1;
- bool in_memory = ((jpg_length + MJPGDHT_LEN) <= MAX_IO_BUFFER_SIZE);
+ bool in_memory = ((jpg_length + MJPGDHT_LEN) <= JPG_MAX_MEMORY_SIZE);
 
  if (in_memory) { // small stream => do everything in memory
  jpg_mem_in = new unsigned char[jpg_length + MJPGDHT_LEN];
@@ -6677,7 +6677,10 @@ void try_decompression_jpg (long long jpg_length, bool progressive_jpg) {
  brotli_used = false;
  }
  } else { // large stream => use temporary files
- // try to decompress at current position
+ if (DEBUG_MODE) {
+printf("JPG too large for brunsli, using packJPG fallback...\n");
+ }
+ // try to decompress at current position
  fjpg = tryOpen(tempfile0,"wb");
  seek_64(fin, input_file_pos);
  fast_copy(fin, fjpg, jpg_length);