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The Independent JPEG Group's JPEG software v4

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This commit is contained in:
Thomas G. Lane
1992-12-10 00:00:00 +00:00
committed by Kornel Lesiński
parent 9821061877
commit f14f1a0dc3
78 changed files with 4906 additions and 2527 deletions
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21
example.c
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@@ -185,9 +185,9 @@ write_JPEG_file (char * filename)
* call to jpeg_compress; typically, making them local data in the
* calling routine is the best strategy.
*/
struct compress_info_struct cinfo;
struct compress_methods_struct c_methods;
struct external_methods_struct e_methods;
struct Compress_info_struct cinfo;
struct Compress_methods_struct c_methods;
struct External_methods_struct e_methods;
/* Initialize the system-dependent method pointers. */
cinfo.methods = &c_methods; /* links to method structs */
@@ -314,7 +314,7 @@ trace_message (const char *msgtext)
/*
* The error_exit() routine should not return to its caller. The default
* routine calls exit(), but here we assume that we want to return to
* read_JPEG_data, which has set up a setjmp context for the purpose.
* read_JPEG_file, which has set up a setjmp context for the purpose.
* You should make sure that the free_all method is called, either within
* error_exit or after the return to the outer-level routine.
*/
@@ -525,9 +525,9 @@ read_JPEG_file (char * filename)
* call to jpeg_decompress; typically, making them local data in the
* calling routine is the best strategy.
*/
struct decompress_info_struct cinfo;
struct decompress_methods_struct dc_methods;
struct external_methods_struct e_methods;
struct Decompress_info_struct cinfo;
struct Decompress_methods_struct dc_methods;
struct External_methods_struct e_methods;
/* Select the input and output files.
* In this example we want to open the input file before doing anything else,
@@ -554,6 +554,10 @@ read_JPEG_file (char * filename)
emethods = &e_methods; /* save struct addr for possible access */
e_methods.error_exit = error_exit; /* supply error-exit routine */
e_methods.trace_message = trace_message; /* supply trace-message routine */
e_methods.trace_level = 0; /* default = no tracing */
e_methods.num_warnings = 0; /* no warnings emitted yet */
e_methods.first_warning_level = 0; /* display first corrupt-data warning */
e_methods.more_warning_level = 3; /* but suppress additional ones */
/* prepare setjmp context for possible exit from error_exit */
if (setjmp(setjmp_buffer)) {
@@ -614,6 +618,9 @@ read_JPEG_file (char * filename)
/* Here we assume only the input file need be closed. */
fclose(cinfo.input_file);
/* You might want to test e_methods.num_warnings to see if bad data was
* detected. In this example, we just blindly forge ahead.
*/
return 1; /* indicate success */
/* Note: if you want to decompress more than one image, we recommend you