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lxdream.org :: lxdream/src/util.c
lxdream 0.9.1
released Jun 29
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filename src/util.c
changeset 768:b2a54f6864eb
prev736:a02d1475ccfd
next1042:0fd066956482
author nkeynes
date Thu Aug 07 23:35:03 2008 +0000 (11 years ago)
permissions -rw-r--r--
last change Fix compiler warnings
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     1 /**
     2  * $Id$
     3  *
     4  * Miscellaneous utility functions.
     5  *
     6  * Copyright (c) 2005 Nathan Keynes.
     7  *
     8  * This program is free software; you can redistribute it and/or modify
     9  * it under the terms of the GNU General Public License as published by
    10  * the Free Software Foundation; either version 2 of the License, or
    11  * (at your option) any later version.
    12  *
    13  * This program is distributed in the hope that it will be useful,
    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  * GNU General Public License for more details.
    17  */
    19 #define HAVE_EXECINFO_H 1
    21 #include <assert.h>
    22 #include <ctype.h>
    23 #include <stdarg.h>
    24 #include <stdio.h>
    25 #include <stdlib.h>
    26 #include <signal.h>
    27 #include <time.h>
    28 #include <zlib.h>
    29 #include <glib.h>
    30 #include <png.h>
    31 #include "dream.h"
    32 #include "display.h"
    33 #include "dreamcast.h"
    34 #include "gui.h"
    35 #include "sh4/sh4.h"
    37 char *msg_levels[] = { "FATAL", "ERROR", "WARN", "INFO", "DEBUG", "TRACE" };
    38 int global_msg_level = EMIT_WARN;
    40 static void report_crash( int signo, siginfo_t *info, void *ptr )
    41 {
    42     char buf[128];
    44     fprintf( stderr, "--- Aborting with signal %d ---\n", signo );
    45     // Get gdb to print a nice backtrace for us
    46     snprintf( buf, 128, "gdb -batch -f --quiet --pid=%d -ex bt", getpid() );
    47     system(buf);
    49     abort();
    50 }
    52 void install_crash_handler(void)
    53 {
    54     struct sigaction sa;
    56     sa.sa_sigaction = report_crash;
    57     sigemptyset(&sa.sa_mask);
    58     sa.sa_flags = SA_RESETHAND|SA_SIGINFO;
    59     sigaction( SIGSEGV, &sa, NULL );
    60 }
    63 void fwrite_string( const char *s, FILE *f )
    64 {
    65     uint32_t len = 0;
    66     if( s == NULL ) {
    67         fwrite( &len, sizeof(len), 1, f );
    68     } else {
    69         len = strlen(s)+1;
    70         fwrite( &len, sizeof(len), 1, f );
    71         fwrite( s, len, 1, f );
    72     }
    73 }
    75 int fread_string( char *s, int maxlen, FILE *f ) 
    76 {
    77     uint32_t len;
    78     fread( &len, sizeof(len), 1, f );
    79     if( len != 0 ) {
    80         fread( s, len > maxlen ? maxlen : len, 1, f );
    81     }
    82     return len;
    83 }
    85 void fwrite_gzip( void *p, size_t sz, size_t count, FILE *f )
    86 {
    87     uLongf size = sz*count;
    88     uLongf csize = ((int)(size*1.001))+13;
    89     unsigned char *tmp = g_malloc0( csize );
    90     int status = compress( tmp, &csize, p, size );
    91     assert( status == Z_OK );
    92     uint32_t wsize = (uint32_t)csize;
    93     fwrite( &wsize, sizeof(wsize), 1, f );
    94     fwrite( tmp, csize, 1, f );
    95     g_free(tmp);
    96 }
    98 int fread_gzip( void *p, size_t sz, size_t count, FILE *f )
    99 {
   100     uLongf size = sz*count;
   101     uint32_t csize;
   102     unsigned char *tmp;
   104     fread( &csize, sizeof(csize), 1, f );
   105     assert( csize <= (size*2) );
   106     tmp = g_malloc0( csize );
   107     fread( tmp, csize, 1, f );
   108     int status = uncompress( p, &size, tmp, csize );
   109     g_free(tmp);
   110     if( status == Z_OK ) {
   111         return count;
   112     } else {
   113         fprintf( stderr, "Error reading compressed data\n" );
   114         return 0;
   115     }
   116 }
   118 void fwrite_dump( unsigned char *data, unsigned int length, FILE *f ) 
   119 {
   120     unsigned int i, j;
   121     for( i =0; i<length; i+=16 ) {
   122         fprintf( f, "%08X:", i);
   123         for( j=i; j<i+16; j++ ) {
   124             if( (j % 4) == 0 )
   125                 fprintf( f, " " );
   126             if( j < length )
   127                 fprintf( f, " %02X", (unsigned int)(data[j]) );
   128             else
   129                 fprintf( f, "   " );
   130         }
   131         fprintf( f, "  " );
   132         for( j=i; j<i+16 && j<length; j++ ) {
   133             fprintf( f, "%c", isprint(data[j]) ? data[j] : '.' );
   134         }
   135         fprintf( f, "\n" );
   136     }
   137 }
   139 void fwrite_dump32( unsigned int *data, unsigned int length, FILE *f ) 
   140 {
   141     fwrite_dump32v( data, length, 8, f );
   142 }
   144 void fwrite_dump32v( unsigned int *data, unsigned int length, int wordsPerLine, FILE *f ) 
   145 {
   146     unsigned int i, j;
   147     for( i =0; i<length>>2; i+=wordsPerLine ) {
   148         fprintf( f, "%08X:", i);
   149         for( j=i; j<i+wordsPerLine; j++ ) {
   150             if( j < length )
   151                 fprintf( f, " %08X", (unsigned int)(data[j]) );
   152             else
   153                 fprintf( f, "         " );
   154         }
   155         fprintf( f, "\n" );
   156     }
   157 }
   159 gboolean write_png_to_stream( FILE *f, frame_buffer_t buffer )
   160 {
   161     int coltype, i;
   162     png_bytep p;
   163     png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
   164     if (!png_ptr) {
   165         return FALSE;
   166     }
   168     png_infop info_ptr = png_create_info_struct(png_ptr);
   169     if (!info_ptr) {
   170         png_destroy_write_struct(&png_ptr, NULL);
   171         return FALSE;
   172     }
   174     if( setjmp(png_jmpbuf(png_ptr)) ) {
   175         png_destroy_write_struct(&png_ptr, &info_ptr);
   176         return FALSE;
   177     }
   178     png_init_io( png_ptr, f );
   179     switch( buffer->colour_format ) {
   180     case COLFMT_BGR888:
   181         coltype = PNG_COLOR_TYPE_RGB;
   182         break;
   183     case COLFMT_BGRA8888:
   184         coltype = PNG_COLOR_TYPE_RGB_ALPHA;
   185         break;
   186     case COLFMT_BGR0888:
   187         coltype = PNG_COLOR_TYPE_RGB;
   188         break;
   189     default:
   190         coltype = PNG_COLOR_TYPE_RGB;
   191     }
   192     png_set_IHDR(png_ptr, info_ptr, buffer->width, buffer->height,
   193                  8, coltype, PNG_INTERLACE_NONE, 
   194                  PNG_COMPRESSION_TYPE_DEFAULT, 
   195                  PNG_FILTER_TYPE_DEFAULT );
   196     png_write_info(png_ptr, info_ptr);
   197     if( buffer->colour_format == COLFMT_BGR0888 ) {
   198         png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
   199     }
   200     png_set_bgr(png_ptr);
   201     if( buffer->inverted ) {
   202         p = (png_bytep)(buffer->data + (buffer->height*buffer->rowstride) - buffer->rowstride);
   203         for(i=0; i<buffer->height; i++ ) {
   204             png_write_row(png_ptr, p);
   205             p-=buffer->rowstride;
   206         }
   207     } else {
   208         p = (png_bytep)buffer->data;
   209         for(i=0; i<buffer->height; i++ ) {
   210             png_write_row(png_ptr, p);
   211             p+=buffer->rowstride;
   212         }
   213     }
   214     png_write_end(png_ptr, info_ptr);
   215     png_destroy_write_struct(&png_ptr, &info_ptr);
   216     return TRUE;
   217 }
   219 frame_buffer_t read_png_from_stream( FILE *f )
   220 {
   221     png_bytep p;
   222     int i;
   223     png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 
   224             NULL, NULL, NULL);
   225     if (!png_ptr) {
   226         return NULL;
   227     }
   229     png_infop info_ptr = png_create_info_struct(png_ptr);
   230     if (!info_ptr) {
   231         png_destroy_read_struct(&png_ptr, NULL, NULL);
   232         return NULL;
   233     }
   235     png_infop end_info = png_create_info_struct(png_ptr);
   236     if (!end_info) {
   237         png_destroy_read_struct(&png_ptr, &info_ptr, NULL );
   238         return NULL;
   239     }
   241     if( setjmp(png_jmpbuf(png_ptr)) ) {
   242         png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
   243         return NULL;
   244     }
   246     png_init_io(png_ptr, f);
   247     png_read_info(png_ptr, info_ptr);
   249     png_uint_32 width, height;
   250     int bit_depth, color_type, interlace_type,
   251     compression_type, filter_method;
   252     png_get_IHDR(png_ptr, info_ptr, &width, &height,
   253                  &bit_depth, &color_type, &interlace_type,
   254                  &compression_type, &filter_method);
   255     assert( interlace_type == PNG_INTERLACE_NONE );
   256     int rowbytes = png_get_rowbytes(png_ptr, info_ptr);
   257     int channels = png_get_channels(png_ptr, info_ptr);
   258     frame_buffer_t buffer = g_malloc( sizeof(struct frame_buffer) + rowbytes*height );
   259     buffer->data = (unsigned char *)(buffer+1);
   260     buffer->width = width;
   261     buffer->height = height;
   262     buffer->rowstride = rowbytes;
   263     buffer->address = -1;
   264     buffer->size = rowbytes*height;
   265     buffer->inverted = FALSE;
   266     if( channels == 4 ) {
   267         buffer->colour_format = COLFMT_BGRA8888;
   268     } else if( channels == 3 ) {
   269         buffer->colour_format = COLFMT_RGB888;
   270     }
   272     p = (png_bytep)buffer->data;
   273     for( i=0; i<height; i++ ) {
   274         png_read_row(png_ptr, p, NULL );
   275         p += rowbytes;
   276     }
   278     png_read_end(png_ptr, end_info);
   279     png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
   280     return buffer;
   281 }
   283 int get_log_level_from_string( const gchar *str )
   284 {
   285     switch( tolower(str[0]) ) {
   286     case 'd': return EMIT_DEBUG;
   287     case 'e': return EMIT_ERR;
   288     case 'f': return EMIT_FATAL;
   289     case 'i': return EMIT_INFO;
   290     case 't': return EMIT_TRACE;
   291     case 'w': return EMIT_WARN;
   292     default: return -1;
   293     }
   294 }
   296 gboolean set_global_log_level( const gchar *str ) 
   297 {
   298     int l = get_log_level_from_string(str);
   299     if( l == -1 ) {
   300         return FALSE;
   301     } else {
   302         global_msg_level = l;
   303         return TRUE;
   304     }
   305 }
   307 void log_message( void *ptr, int level, const gchar *source, const char *msg, ... )
   308 {
   309     char buf[20];
   310     time_t tm = time(NULL);
   311     va_list ap;
   313     if( level > global_msg_level ) {
   314         return; // ignored
   315     }
   317     va_start(ap, msg);
   318     gchar *text = g_strdup_vprintf( msg, ap );
   319     va_end(ap);
   321     if( level <= EMIT_ERR ) {
   322         if( gui_error_dialog( text ) ) {
   323             g_free(text);
   324             // If we're running, halt on error to avoid potentially flooding
   325             // the user with error messages.
   326             if( dreamcast_is_running() ) {
   327                 dreamcast_stop();
   328             }
   329             return;
   330         }
   331     }
   334     strftime( buf, sizeof(buf), "%H:%M:%S", localtime(&tm) );
   335     fprintf( stderr, "%s %08X %-5s %s\n", buf, sh4r.pc, msg_levels[level], text );
   336     g_free(text);
   337 }
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