int main(int argc, char*const* argv) {
int opt, has_consumed_fmt_input;
unsigned i;
co_this = argv[0];
while (-1 != (opt =
#ifdef HAVE_GETOPT_LONG
getopt_long(argc, argv, short_options, long_options, NULL)
#else
getopt(argc, argv, short_options)
#endif
)) {
switch (opt) {
case '?':
case ':':
case 'h':
fputs(usage_statement, opt == 'h'? stdout : stderr);
return (opt == 'h'? 0 : 255);
case 'V':
puts("drachencode (" PACKAGE_STRING ")");
return 0;
case 'b':
uint_arg_or_die(&co_block_size, "block-size");
break;
case 'd':
co_is_decoding = 1;
break;
case 'D':
co_dryrun = 1;
break;
case 'e':
co_is_encoding = 1;
break;
case 'f':
co_force = 1;
break;
case 'H':
uint_arg_or_die(&co_image_bh, "img-block-height");
break;
case 'W':
uint_arg_or_die(&co_image_bw, "img-block-width");
break;
case 'O':
uint_arg_or_die(&co_image_off, "img-offset");
break;
case 'C':
uint_arg_or_die(&co_image_nc, "img-num-cols");
break;
case 'X':
uint_arg_or_die(&co_image_comps, "img-num-components");
break;
case 'R':
uint_arg_or_die(&co_image_nr, "img-num-rows");
break;
case 'w':
co_nowarn = 1;
break;
case 'N':
co_base_son_on_output = 1;
break;
case 'n':
co_sequential_output_name = strdup(optarg);
break;
case 'u':
co_allow_unsafe_names = 1;
break;
case 'o':
co_primary_filename = strdup(optarg);
break;
case 't':
co_timing_statistics = 1;
break;
case 'v':
++co_verbosity;
break;
case 'Z':
co_zero_frames = 1;
break;
case 'a':
uint_arg_or_die(&co_begin, "begin");
break;
case 'z':
uint_arg_or_die(&co_end, "end");
break;
case 's':
uint_arg_or_die(&co_stride, "stride");
break;
default:
fprintf(stderr, "%s: FATAL: Unknown \"known\" option: %c\n",
co_this, (char)opt);
exit(255);
}
}
/* Validate options */
if (!(co_is_decoding ^ co_is_encoding)) {
l_error("Exactly one of --encode or --decode must be specified.");
return 255;
}
if (co_is_encoding &&
(co_image_nc || co_image_nr || co_image_bw || co_image_bh ||
co_image_off || co_image_comps) &&
!(co_image_nc && co_image_nr && co_image_bw && co_image_bh)) {
l_error("Either no image options, or at least --img-num-cols,\n"
"--img-num-rows, --img-block-width, and --img-block-height\n"
"must be specified.");
return 255;
}
if (co_image_nc && !co_image_comps)
co_image_comps = 1;
/* Validate the format string, if given */
if (co_sequential_output_name) {
has_consumed_fmt_input = 0;
for (i = 0; co_sequential_output_name[i]; ++i) {
if (co_sequential_output_name[i] == '%') {
++i;
if (co_sequential_output_name[i] == '%')
/* Simple escaped percent sign */
continue;
if (has_consumed_fmt_input) {
l_error("Format string has more than one consuming formatting.");
return 255;
}
has_consumed_fmt_input = 1;
/* Flags */
while (co_sequential_output_name[i] == '#' ||
co_sequential_output_name[i] == '0' ||
co_sequential_output_name[i] == '-' ||
co_sequential_output_name[i] == ' ' ||
co_sequential_output_name[i] == '+')
++i;
/* Width */
while (co_sequential_output_name[i] >= '0' &&
co_sequential_output_name[i] <= '9')
++i;
/* Type */
if (co_sequential_output_name[i] != 'd' &&
co_sequential_output_name[i] != 'i' &&
co_sequential_output_name[i] != 'o' &&
co_sequential_output_name[i] != 'u' &&
co_sequential_output_name[i] != 'x' &&
co_sequential_output_name[i] != 'X') {
l_error("Invalid format string type.");
return 255;
}
}
}
if (!has_consumed_fmt_input) {
l_error("Format string is not variant.");
return 255;
}
}
if (co_is_encoding && !co_force && !co_primary_filename) {
l_error("Not implicitly encoding to standard output without --force");
return 255;
}
if (co_image_bh && co_image_nr && co_image_nr % co_image_bh) {
l_warn("img-block-height does not divide evenly into img-num-rows.");
l_warn("Actual block height will differ from what you specfied.");
}
if (co_image_bw && co_image_nc && co_image_nc % co_image_bw) {
l_warn("img-block-width does not divide evenly into img-num-cols.");
l_warn("Actual block height will differ from what you specified.");
}
if (co_dryrun && co_is_encoding) {
l_report("Changing output file to /dev/null to perform dry-run.");
co_primary_filename = "/dev/null";
}
if (co_is_encoding) {
co_num_encoding_input_files = optind <= argc? argc - optind : 0;
/* Cast is safe, we won't be modifying anything.
* (char*const* -> const char*const* is technically "incompatible")
*/
co_encoding_input_files = (const char*const*)argv+optind;
if (!co_num_encoding_input_files) {
l_error("No encoding input files given.");
return 255;
}
return do_encode();
} else {
if (optind >= argc) {
co_primary_filename = "-";
if (!co_force)
l_warn("Decoding from standard input.");
} else if (argc - optind == 1) {
co_primary_filename = argv[optind];
} else {
l_error("Too many input files.");
return 255;
}
return do_decode();
}
}
static int do_encode(void) {
FILE* file = 0, *infile = 0;
drachen_encoder* enc = NULL;
struct stat statbuf;
uint32_t frame_size, amt_read;
uint32_t* custom_xform = NULL;
unsigned char* buffer = NULL;
int status = 0;
unsigned i;
clock_t enc_start, enc_end, total_time = 0;
unsigned long long total_data;
unsigned data_suffix = 0;
drachen_block_spec custom_blocks[2];
if (!co_primary_filename || !strcmp(co_primary_filename, "-"))
file = stdin;
else
file = fopen(co_primary_filename,
/* Only allow overwriting if forced, or if writing to the
* bitbucket.
*/
co_force || !strcmp(co_primary_filename, "/dev/null")?
"wb" : "wbx");
if (!file) {
l_sysferr("Could not open output file", co_primary_filename);
if (errno == EEXIST)
fprintf(stderr, "Use --force to overwrite it anyway.\n");
status = 254;
goto finish;
}
/* Get the frame size from the first file */
if (stat(co_encoding_input_files[0], &statbuf)) {
l_sysferr("Could not stat first input file", co_encoding_input_files[0]);
status = 254;
goto finish;
}
if (!statbuf.st_size) {
l_error("First file appears to be empty (size==0), giving up.");
status = 254;
goto finish;
}
frame_size = statbuf.st_size;
l_reportf("Using frame size of %u bytes.\n", (unsigned)frame_size);
if (co_image_bw) {
if (frame_size < co_image_off + co_image_comps*co_image_nr*co_image_nc) {
l_error("Frames are too small for the image parameters you specified.");
status = 255;
goto finish;
}
if (frame_size > co_image_nc + co_image_comps*co_image_nr*co_image_nc)
l_warn("Frame size is larger than the space used by the image parms.");
custom_xform = malloc(sizeof(uint32_t)*frame_size);
if (!custom_xform) {
l_syserr("Could not allocate image transform buffer");
status = 254;
goto finish;
}
/* Initialise the whole thing first in case the image doesn't cover the
* whole thing.
*/
for (i = 0; i < frame_size; ++i)
custom_xform[i] = i;
drachen_make_image_xform_matrix(custom_xform,
co_image_off,
co_image_nc,
co_image_nr,
co_image_comps,
co_image_bw,
co_image_bh);
}
buffer = malloc(frame_size);
if (!buffer) {
l_syserr("Could not allocate input buffer");
status = 254;
goto finish;
}
enc = drachen_create_encoder(file, frame_size, custom_xform);
if (!enc) {
l_syserr("Could not allocate encoder");
status = 254;
goto finish;
}
if (co_block_size) {
custom_blocks[0].segment_end = 0xFFFFFFFFu;
custom_blocks[0].block_size = co_block_size;
drachen_set_block_size(enc, custom_blocks);
} else if (co_image_bh) {
if (co_image_off) {
custom_blocks[0].segment_end = co_image_off;
custom_blocks[0].block_size = co_image_off;
custom_blocks[1].segment_end = 0xFFFFFFFFu;
custom_blocks[1].block_size = co_image_bw/4;
if (custom_blocks[1].block_size < 16)
custom_blocks[1].block_size = co_image_bw;
} else {
custom_blocks[0].segment_end = 0xFFFFFFFFu;
custom_blocks[0].block_size = co_image_bw/4;
if (custom_blocks[0].block_size < 16)
custom_blocks[0].block_size = co_image_bw;
}
drachen_set_block_size(enc, custom_blocks);
}
for (i = 0; i < co_num_encoding_input_files; ++i) {
l_report(co_encoding_input_files[i]);
infile = fopen(co_encoding_input_files[i], "rb");
if (!infile) {
l_sysferr("Could not open input file", co_encoding_input_files[i]);
status = 254;
goto finish;
}
amt_read = fread(buffer, 1, frame_size, infile);
if (ferror(infile)) {
l_sysferr("Could not read from input file", co_encoding_input_files[i]);
status = 254;
goto finish;
}
if (EOF != fgetc(infile)) {
l_warns("File is longer than frame size; it will be truncated",
co_encoding_input_files[i]);
}
fclose(infile);
infile = NULL;
if (amt_read < frame_size) {
l_warns("File is shorter than frame size; other bytes assumed zero.",
co_encoding_input_files[i]);
memset(buffer+amt_read, 0, frame_size-amt_read);
}
enc_start = clock();
status = drachen_encode(enc, buffer, co_encoding_input_files[i]);
enc_end = clock();
if (status) {
l_errore(co_encoding_input_files[i], enc);
goto finish;
}
total_time += enc_end - enc_start;
if (co_timing_statistics)
l_report_extraf("File %s encoded in %u ms\n",
co_encoding_input_files[i],
(unsigned)((enc_end-enc_start)*1000/CLOCKS_PER_SEC));
}
/* If timing statistics were requested, print them */
if (co_timing_statistics) {
if (total_time == 0)
total_time = 1;
fprintf(stderr, "Encoding rate:\n");
fprintf(stderr, " Frames/ms: %u\n",
(unsigned)(((unsigned long long)co_num_encoding_input_files) *
CLOCKS_PER_SEC / 1000 / total_time));
fprintf(stderr, " Frames/sec: %u\n",
(unsigned)(((unsigned long long)co_num_encoding_input_files) *
CLOCKS_PER_SEC / total_time));
fprintf(stderr, " Frames/min: %u\n",
(unsigned)(((unsigned long long)co_num_encoding_input_files) *
60 * CLOCKS_PER_SEC / total_time));
total_data = co_num_encoding_input_files;
total_data *= frame_size;
total_data *= CLOCKS_PER_SEC;
total_data /= total_time;
while (total_data > 1024*1024) {
total_data /= 1024;
++data_suffix;
}
fprintf(stderr, " Data rate: %u %s/sec\n",
(unsigned)total_data, data_suffices[data_suffix]);
}
finish:
if (infile) fclose(infile);
if (buffer) free(buffer);
if (custom_xform) free(custom_xform);
if (enc) {
drachen_free(enc);
file = NULL;
}
if (file) fclose(file);
return status;
}
// Find the matching plugin structure for the section name `section`. If no
// such section exists, a new one is allocated and returned. If the section
// name matches the special name "Global", it is added to the appropriate list.
//
// Returns true on success, false on failure.
static bool find_plugin_section(struct registry *registry,
const char *section,
struct plugin **plugin)
{
struct plugin *current;
// Check if this is the special "Global" section used to specify default
// parameters and other special values.
if (strcmp(section, "Global") == 0) {
// If this is the first value from the Global section, we need to
// create it.
if (registry->global == NULL) {
// Allocate a new structure.
if ((*plugin = calloc(1, sizeof(**plugin))) == NULL) {
l_error("memory allocation failure");
return false;
}
// Install as the global plugin.
registry->global = *plugin;
registry->global->section = strdup(section);
}
// Return pointer to parent.
*plugin = registry->global;
// Success.
return !! registry->global->section;
} else {
// This is not the Global section, a regular plugin section.
current = registry->plugins;
for (current = registry->plugins; current; current = current->next) {
// Search to see if we already recognise this section.
if (strcmp(current->section, section) == 0) {
// Match found.
*plugin = current;
return true;
}
}
}
// This is the first time we've seen this section, we have to set it up.
l_debug("new plugin section %s discovered", section);
// Allocate a new structure.
if ((*plugin = calloc(1, sizeof(**plugin))) == NULL) {
l_error("memory allocation failure");
return false;
}
// Check if we have any other plugins registered.
if (registry->plugins != NULL) {
// Find the tail of the plugin registry.
for (current = registry->plugins; current->next; current = current->next)
;
// Add to the list.
current->next = *plugin;
current = current->next;
current->section = strdup(section);
} else {
// This is the first plugin structure we've seen, create the list head.
registry->plugins = *plugin;
registry->plugins->section = strdup(section);
current = registry->plugins;
}
// Success.
return !! current->section;
}