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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 1148:8e75fab17be8
prev1092:7c4ffe27e7b5
next1239:be3121267597
author nkeynes
date Sun Feb 12 16:30:26 2012 +1000 (9 years ago)
permissions -rw-r--r--
last change Add -Werror for mregparm check, so it actually fails if mregparm isn't
accepted
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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     sh4_crashdump();
    46     // Get gdb to print a nice backtrace for us
    47 #ifdef APPLE_BUILD
    48     snprintf( buf, 128, "echo bt | gdb --quiet --pid=%d", getpid() );
    49 #else
    50     snprintf( buf, 128, "gdb -batch -f --quiet --pid=%d -ex bt", getpid() );
    51 #endif
    52     system(buf);
    54     abort();
    55 }
    57 void install_crash_handler(void)
    58 {
    59     struct sigaction sa;
    61     sa.sa_sigaction = report_crash;
    62     sigemptyset(&sa.sa_mask);
    63     sa.sa_flags = SA_RESETHAND|SA_SIGINFO;
    64     sigaction( SIGSEGV, &sa, NULL );
    65     sigaction( SIGILL, &sa, NULL );
    66     sigaction( SIGBUS, &sa, NULL );
    67 }
    70 void fwrite_string( const char *s, FILE *f )
    71 {
    72     uint32_t len = 0;
    73     if( s == NULL ) {
    74         fwrite( &len, sizeof(len), 1, f );
    75     } else {
    76         len = strlen(s)+1;
    77         fwrite( &len, sizeof(len), 1, f );
    78         fwrite( s, len, 1, f );
    79     }
    80 }
    82 int fread_string( char *s, int maxlen, FILE *f ) 
    83 {
    84     uint32_t len;
    85     fread( &len, sizeof(len), 1, f );
    86     if( len != 0 ) {
    87         fread( s, len > maxlen ? maxlen : len, 1, f );
    88     }
    89     return len;
    90 }
    92 int fwrite_gzip( void *p, size_t sz, size_t count, FILE *f )
    93 {
    94     uLongf size = sz*count;
    95     uLongf csize = ((int)(size*1.001))+13;
    96     unsigned char *tmp = g_malloc0( csize );
    97     int status = compress( tmp, &csize, p, size );
    98     assert( status == Z_OK );
    99     uint32_t wsize = (uint32_t)csize;
   100     fwrite( &wsize, sizeof(wsize), 1, f );
   101     int written = fwrite( tmp, csize, 1, f );
   102     g_free(tmp);
   104     /* Could be finer-grained, but this is enough to know it succeeded/failed */
   105     if( written == 1 ) {
   106         return count;
   107     } else {
   108         return 0;
   109     }
   110 }
   112 int fread_gzip( void *p, size_t sz, size_t count, FILE *f )
   113 {
   114     uLongf size = sz*count;
   115     uint32_t csize;
   116     unsigned char *tmp;
   118     fread( &csize, sizeof(csize), 1, f );
   119     assert( csize <= (size*2) );
   120     tmp = g_malloc0( csize );
   121     fread( tmp, csize, 1, f );
   122     int status = uncompress( p, &size, tmp, csize );
   123     g_free(tmp);
   124     if( status == Z_OK ) {
   125         return count;
   126     } else {
   127         fprintf( stderr, "Error reading compressed data\n" );
   128         return 0;
   129     }
   130 }
   132 void fwrite_dump( unsigned char *data, unsigned int length, FILE *f ) 
   133 {
   134     unsigned int i, j;
   135     for( i =0; i<length; i+=16 ) {
   136         fprintf( f, "%08X:", i);
   137         for( j=i; j<i+16; j++ ) {
   138             if( (j % 4) == 0 )
   139                 fprintf( f, " " );
   140             if( j < length )
   141                 fprintf( f, " %02X", (unsigned int)(data[j]) );
   142             else
   143                 fprintf( f, "   " );
   144         }
   145         fprintf( f, "  " );
   146         for( j=i; j<i+16 && j<length; j++ ) {
   147             fprintf( f, "%c", isprint(data[j]) ? data[j] : '.' );
   148         }
   149         fprintf( f, "\n" );
   150     }
   151 }
   153 void fwrite_dump32( unsigned int *data, unsigned int length, FILE *f ) 
   154 {
   155     fwrite_dump32v( data, length, 8, f );
   156 }
   158 void fwrite_dump32v( unsigned int *data, unsigned int length, int wordsPerLine, FILE *f ) 
   159 {
   160     unsigned int i, j;
   161     for( i =0; i<length>>2; i+=wordsPerLine ) {
   162         fprintf( f, "%08X:", i);
   163         for( j=i; j<i+wordsPerLine; j++ ) {
   164             if( j < length )
   165                 fprintf( f, " %08X", (unsigned int)(data[j]) );
   166             else
   167                 fprintf( f, "         " );
   168         }
   169         fprintf( f, "\n" );
   170     }
   171 }
   173 gboolean write_png_to_stream( FILE *f, frame_buffer_t buffer )
   174 {
   175     int coltype, i;
   176     png_bytep p;
   177     png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
   178     if (!png_ptr) {
   179         return FALSE;
   180     }
   182     png_infop info_ptr = png_create_info_struct(png_ptr);
   183     if (!info_ptr) {
   184         png_destroy_write_struct(&png_ptr, NULL);
   185         return FALSE;
   186     }
   188     if( setjmp(png_jmpbuf(png_ptr)) ) {
   189         png_destroy_write_struct(&png_ptr, &info_ptr);
   190         return FALSE;
   191     }
   192     png_init_io( png_ptr, f );
   193     switch( buffer->colour_format ) {
   194     case COLFMT_BGR888:
   195         coltype = PNG_COLOR_TYPE_RGB;
   196         break;
   197     case COLFMT_BGRA8888:
   198         coltype = PNG_COLOR_TYPE_RGB_ALPHA;
   199         break;
   200     case COLFMT_BGR0888:
   201         coltype = PNG_COLOR_TYPE_RGB;
   202         break;
   203     default:
   204         coltype = PNG_COLOR_TYPE_RGB;
   205     }
   206     png_set_IHDR(png_ptr, info_ptr, buffer->width, buffer->height,
   207                  8, coltype, PNG_INTERLACE_NONE, 
   208                  PNG_COMPRESSION_TYPE_DEFAULT, 
   209                  PNG_FILTER_TYPE_DEFAULT );
   210     png_write_info(png_ptr, info_ptr);
   211     if( buffer->colour_format == COLFMT_BGR0888 ) {
   212         png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
   213     }
   214     png_set_bgr(png_ptr);
   215     if( buffer->inverted ) {
   216         p = (png_bytep)(buffer->data + (buffer->height*buffer->rowstride) - buffer->rowstride);
   217         for(i=0; i<buffer->height; i++ ) {
   218             png_write_row(png_ptr, p);
   219             p-=buffer->rowstride;
   220         }
   221     } else {
   222         p = (png_bytep)buffer->data;
   223         for(i=0; i<buffer->height; i++ ) {
   224             png_write_row(png_ptr, p);
   225             p+=buffer->rowstride;
   226         }
   227     }
   228     png_write_end(png_ptr, info_ptr);
   229     png_destroy_write_struct(&png_ptr, &info_ptr);
   230     return TRUE;
   231 }
   233 frame_buffer_t read_png_from_stream( FILE *f )
   234 {
   235     png_bytep p;
   236     int i;
   237     png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, 
   238             NULL, NULL, NULL);
   239     if (!png_ptr) {
   240         return NULL;
   241     }
   243     png_infop info_ptr = png_create_info_struct(png_ptr);
   244     if (!info_ptr) {
   245         png_destroy_read_struct(&png_ptr, NULL, NULL);
   246         return NULL;
   247     }
   249     png_infop end_info = png_create_info_struct(png_ptr);
   250     if (!end_info) {
   251         png_destroy_read_struct(&png_ptr, &info_ptr, NULL );
   252         return NULL;
   253     }
   255     if( setjmp(png_jmpbuf(png_ptr)) ) {
   256         png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
   257         return NULL;
   258     }
   260     png_init_io(png_ptr, f);
   261     png_read_info(png_ptr, info_ptr);
   263     png_uint_32 width, height;
   264     int bit_depth, color_type, interlace_type,
   265     compression_type, filter_method;
   266     png_get_IHDR(png_ptr, info_ptr, &width, &height,
   267                  &bit_depth, &color_type, &interlace_type,
   268                  &compression_type, &filter_method);
   269     assert( interlace_type == PNG_INTERLACE_NONE );
   270     int rowbytes = png_get_rowbytes(png_ptr, info_ptr);
   271     int channels = png_get_channels(png_ptr, info_ptr);
   272     frame_buffer_t buffer = g_malloc( sizeof(struct frame_buffer) + rowbytes*height );
   273     buffer->data = (unsigned char *)(buffer+1);
   274     buffer->width = width;
   275     buffer->height = height;
   276     buffer->rowstride = rowbytes;
   277     buffer->address = -1;
   278     buffer->size = rowbytes*height;
   279     buffer->inverted = FALSE;
   280     if( channels == 4 ) {
   281         buffer->colour_format = COLFMT_BGRA8888;
   282     } else if( channels == 3 ) {
   283         buffer->colour_format = COLFMT_RGB888;
   284     }
   286     p = (png_bytep)buffer->data;
   287     for( i=0; i<height; i++ ) {
   288         png_read_row(png_ptr, p, NULL );
   289         p += rowbytes;
   290     }
   292     png_read_end(png_ptr, end_info);
   293     png_destroy_read_struct(&png_ptr, &info_ptr, &end_info);
   294     return buffer;
   295 }
   297 int get_log_level_from_string( const gchar *str )
   298 {
   299     switch( tolower(str[0]) ) {
   300     case 'd': return EMIT_DEBUG;
   301     case 'e': return EMIT_ERR;
   302     case 'f': return EMIT_FATAL;
   303     case 'i': return EMIT_INFO;
   304     case 't': return EMIT_TRACE;
   305     case 'w': return EMIT_WARN;
   306     default: return -1;
   307     }
   308 }
   310 gboolean set_global_log_level( const gchar *str ) 
   311 {
   312     int l = get_log_level_from_string(str);
   313     if( l == -1 ) {
   314         return FALSE;
   315     } else {
   316         global_msg_level = l;
   317         return TRUE;
   318     }
   319 }
   321 void log_message( void *ptr, int level, const gchar *source, const char *msg, ... )
   322 {
   323     char buf[20];
   324     time_t tm = time(NULL);
   325     va_list ap;
   327     if( level > global_msg_level ) {
   328         return; // ignored
   329     }
   331     va_start(ap, msg);
   332     gchar *text = g_strdup_vprintf( msg, ap );
   333     va_end(ap);
   335     if( level <= EMIT_ERR ) {
   336         if( gui_error_dialog( text ) ) {
   337             g_free(text);
   338             // If we're running, halt on error to avoid potentially flooding
   339             // the user with error messages.
   340             if( dreamcast_is_running() ) {
   341                 dreamcast_stop();
   342             }
   343             return;
   344         }
   345     }
   348     strftime( buf, sizeof(buf), "%H:%M:%S", localtime(&tm) );
   349     fprintf( stderr, "%s %08X %-5s %s\n", buf, sh4r.pc, msg_levels[level], text );
   350     g_free(text);
   351 }
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