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Tools: binary_to_compressed_c.cpp: added -nocompress option.

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This commit is contained in:
ocornut 2015-10-12 13:13:00 +02:00
parent d4d2e5bc62
commit 1c69b3d0df
1 changed files with 16 additions and 11 deletions
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23
extra_fonts/binary_to_compressed_c.cpp
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@ -18,21 +18,23 @@ typedef unsigned int stb_uint;
typedef unsigned char stb_uchar; typedef unsigned char stb_uchar;
stb_uint stb_compress(stb_uchar *out,stb_uchar *in,stb_uint len); stb_uint stb_compress(stb_uchar *out,stb_uchar *in,stb_uint len);
static bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_base85_encoding); static bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_base85_encoding, bool use_compression);
int main(int argc, char** argv) int main(int argc, char** argv)
{ {
if (argc < 3) if (argc < 3)
{ {
printf("Syntax: %s [-base85] <inputfile> <symbolname>\n", argv[0]); printf("Syntax: %s [-base85] [-nocompress] <inputfile> <symbolname>\n", argv[0]);
return 0; return 0;
} }
int argn = 1; int argn = 1;
bool use_base85_encoding = false; bool use_base85_encoding = false;
bool use_compression = true;
if (argv[argn][0] == '-') if (argv[argn][0] == '-')
{ {
if (strcmp(argv[argn], "-base85") == 0) { use_base85_encoding = true; argn++; } if (strcmp(argv[argn], "-base85") == 0) { use_base85_encoding = true; argn++; }
else if (strcmp(argv[argn], "-nocompress") == 0) { use_compression = false; argn++; }
else else
{ {
printf("Unknown argument: '%s'\n", argv[argn]); printf("Unknown argument: '%s'\n", argv[argn]);
@ -40,7 +42,7 @@ int main(int argc, char** argv)
} }
} }
binary_to_compressed_c(argv[argn], argv[argn+1], use_base85_encoding); binary_to_compressed_c(argv[argn], argv[argn+1], use_base85_encoding, use_compression);
return 1; return 1;
} }
@ -50,7 +52,7 @@ char Encode85Byte(unsigned int x)
return (x>='\\') ? x+1 : x; return (x>='\\') ? x+1 : x;
} }
bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_base85_encoding) bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_base85_encoding, bool use_compression)
{ {
// Read file // Read file
FILE* f = fopen(filename, "rb"); FILE* f = fopen(filename, "rb");
@ -64,17 +66,19 @@ bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_b
// Compress // Compress
int maxlen = data_sz + 512 + (data_sz >> 2) + sizeof(int); // total guess int maxlen = data_sz + 512 + (data_sz >> 2) + sizeof(int); // total guess
char* compressed = new char[maxlen]; char* compressed = use_compression ? new char[maxlen] : data;
int compressed_sz = stb_compress((stb_uchar*)compressed, (stb_uchar*)data, data_sz); int compressed_sz = use_compression ? stb_compress((stb_uchar*)compressed, (stb_uchar*)data, data_sz) : data_sz;
if (use_compression)
memset(compressed + compressed_sz, 0, maxlen - compressed_sz); memset(compressed + compressed_sz, 0, maxlen - compressed_sz);
// Output as Base85 encoded // Output as Base85 encoded
FILE* out = stdout; FILE* out = stdout;
fprintf(out, "// File: '%s' (%d bytes)\n", filename, (int)data_sz); fprintf(out, "// File: '%s' (%d bytes)\n", filename, (int)data_sz);
fprintf(out, "// Exported using binary_to_compressed_c.cpp\n"); fprintf(out, "// Exported using binary_to_compressed_c.cpp\n");
const char* compressed_str = use_compression ? "compressed_" : "";
if (use_base85_encoding) if (use_base85_encoding)
{ {
fprintf(out, "static const char %s_compressed_data_base85[%d+1] =\n \"", symbol, (int)((compressed_sz+3)/4)*5); fprintf(out, "static const char %s_%sdata_base85[%d+1] =\n \"", symbol, compressed_str, (int)((compressed_sz+3)/4)*5);
int column = 0; int column = 0;
for (int i = 0; i < compressed_sz; i += 4) for (int i = 0; i < compressed_sz; i += 4)
{ {
@ -87,8 +91,8 @@ bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_b
} }
else else
{ {
fprintf(out, "static const unsigned int %s_compressed_size = %d;\n", symbol, (int)compressed_sz); fprintf(out, "static const unsigned int %s_%ssize = %d;\n", symbol, compressed_str, (int)compressed_sz);
fprintf(out, "static const unsigned int %s_compressed_data[%d/4] =\n{", symbol, (int)((compressed_sz+3)/4)*4); fprintf(out, "static const unsigned int %s_%sdata[%d/4] =\n{", symbol, compressed_str, (int)((compressed_sz+3)/4)*4);
int column = 0; int column = 0;
for (int i = 0; i < compressed_sz; i += 4) for (int i = 0; i < compressed_sz; i += 4)
{ {
@ -103,6 +107,7 @@ bool binary_to_compressed_c(const char* filename, const char* symbol, bool use_b
// Cleanup // Cleanup
delete[] data; delete[] data;
if (use_compression)
delete[] compressed; delete[] compressed;
return true; return true;
} }