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-rw-r--r--src/mot-encoder.cpp88
1 files changed, 70 insertions, 18 deletions
diff --git a/src/mot-encoder.cpp b/src/mot-encoder.cpp
index c92a596..9f502c1 100644
--- a/src/mot-encoder.cpp
+++ b/src/mot-encoder.cpp
@@ -69,6 +69,13 @@ extern "C" {
// JPEG quality 40
#define MINQUALITY 40
+// Charsets from TS 101 756
+#define CHARSET_COMPLETE_EBU_LATIN 0 // Complete EBU Latin based repertoire
+#define CHARSET_EBU_LATIN_CY_GR 1 // EBU Latin based common core, Cyrillic, Greek
+#define CHARSET_EBU_LATIN_AR_HE_CY_GR 2 // EBU Latin based core, Arabic, Hebrew, Cyrillic and Greek
+#define CHARSET_ISO_LATIN_ALPHABET_2 3 // ISO Latin Alphabet No 2
+#define CHARSET_UTF8 15 // ISO Latin Alphabet No 2
+
struct MSCDG {
// MSC Data Group Header (extension field not supported)
unsigned char extflag; // 1 bit
@@ -215,8 +222,8 @@ void writeMotPAD(int output_fd,
unsigned short int mscdgsize,
unsigned short int padlen);
-void create_dls_datagroup(char* text, int padlen);
-void writeDLS(int output_fd, const char* dls_file, int padlen);
+void create_dls_datagroup(char* text, int padlen, uint8_t charset);
+void writeDLS(int output_fd, const char* dls_file, int padlen, uint8_t charset);
int get_xpadlengthmask(int padlen);
@@ -248,18 +255,25 @@ void usage(char* name)
fprintf(stderr, "Usage: %s [OPTIONS...]\n", name);
fprintf(stderr, " -d, --dir=DIRNAME Directory to read images from.\n"
" -e, --erase Erase slides from DIRNAME once they have\n"
- " been encoded.\n"
+ " been encoded.\n"
" -s, --sleep=DELAY Wait DELAY seconds between each slide\n"
- " Default: " STR(SLEEPDELAY_DEFAULT) "\n"
+ " Default: " STR(SLEEPDELAY_DEFAULT) "\n"
" -o, --output=FILENAME Fifo to write PAD data into.\n"
- " Default: /tmp/pad.fifo\n"
+ " Default: /tmp/pad.fifo\n"
" -t, --dls=FILENAME Fifo or file to read DLS text from.\n"
" -p, --pad=LENGTH Set the pad length.\n"
- " Possible values: " ALLOWED_PADLEN "\n"
- " Default: 58\n"
+ " Possible values: " ALLOWED_PADLEN "\n"
+ " Default: 58\n"
+ " -c, --charset=ID Signal the character set encoding defined by ID\n"
+ " ID = 0: Complete EBU Latin based repertoire\n"
+ " ID = 1: Latin based common core, Cyrillic, Greek\n"
+ " ID = 2: EBU Latin based core, Arabic, Hebrew, Cyrillic and Greek\n"
+ " ID = 3: ISO Latin Alphabet No 2\n"
+ " ID = 15: ISO/IEC 10646 using UTF-8\n"
+ " Default: 0\n"
" -R, --raw-slides Do not process slides. Integrity checks and resizing\n"
- " slides is skipped. Use this if you know what you are doing !\n"
- " It is useful only when -d is used\n"
+ " slides is skipped. Use this if you know what you are doing !\n"
+ " It is useful only when -d is used\n"
" -v, --verbose Print more information to the console\n"
);
}
@@ -276,12 +290,14 @@ int main(int argc, char *argv[])
bool erase_after_tx = false;
int sleepdelay = SLEEPDELAY_DEFAULT;
bool raw_slides = false;
+ int charset = CHARSET_COMPLETE_EBU_LATIN;
const char* dir = NULL;
const char* output = "/tmp/pad.fifo";
const char* dls_file = NULL;
const struct option longopts[] = {
+ {"charset", required_argument, 0, 'c'},
{"dir", required_argument, 0, 'd'},
{"erase", no_argument, 0, 'e'},
{"output", required_argument, 0, 'o'},
@@ -297,8 +313,11 @@ int main(int argc, char *argv[])
int ch=0;
int index;
while(ch != -1) {
- ch = getopt_long(argc, argv, "ehRd:o:p:s:t:v", longopts, &index);
+ ch = getopt_long(argc, argv, "ehRc:d:o:p:s:t:v", longopts, &index);
switch (ch) {
+ case 'c':
+ charset = atoi(optarg);
+ break;
case 'd':
dir = optarg;
break;
@@ -355,6 +374,39 @@ int main(int argc, char *argv[])
return 1;
}
+ const char* user_charset;
+ switch (charset) {
+ case CHARSET_COMPLETE_EBU_LATIN:
+ user_charset = "Complete EBU Latin";
+ break;
+ case CHARSET_EBU_LATIN_CY_GR:
+ user_charset = "EBU Latin core, Cyrillic, Greek";
+ break;
+ case CHARSET_EBU_LATIN_AR_HE_CY_GR:
+ user_charset = "EBU Latin core, Arabic, Hebrew, Cyrillic, Greek";
+ break;
+ case CHARSET_ISO_LATIN_ALPHABET_2:
+ user_charset = "ISO Latin Alphabet 2";
+ break;
+ case CHARSET_UTF8:
+ user_charset = "UTF-8";
+ break;
+ default:
+ user_charset = "Invalid";
+ charset = -1;
+ break;
+ }
+
+ if (charset == -1) {
+ fprintf(stderr, "mot-encoder Error: Invalid charset!\n");
+ usage(argv[0]);
+ return 1;
+ }
+ else {
+ fprintf(stderr, "mot-encoder using charset %s (%d)\n",
+ user_charset, charset);
+ }
+
int output_fd = open(output, O_WRONLY);
if (output_fd == -1) {
perror("mot-encoder Error: failed to open output");
@@ -400,7 +452,7 @@ int main(int argc, char *argv[])
if (dls_file) {
// Maybe we have no slides, always update DLS
- writeDLS(output_fd, dls_file, padlen);
+ writeDLS(output_fd, dls_file, padlen, charset);
sleep(sleepdelay);
}
@@ -424,7 +476,7 @@ int main(int argc, char *argv[])
// Always retransmit DLS after each slide, we want it to be updated frequently
if (dls_file) {
- writeDLS(output_fd, dls_file, padlen);
+ writeDLS(output_fd, dls_file, padlen, charset);
}
sleep(sleepdelay);
@@ -438,7 +490,7 @@ int main(int argc, char *argv[])
}
else if (dls_file) { // only DLS
// Always retransmit DLS, we want it to be updated frequently
- writeDLS(output_fd, dls_file, padlen);
+ writeDLS(output_fd, dls_file, padlen, charset);
sleep(sleepdelay);
}
@@ -818,7 +870,7 @@ void packMscDG(unsigned char* b, MSCDG* msc, unsigned short int* bsize)
}
-void writeDLS(int output_fd, const char* dls_file, int padlen)
+void writeDLS(int output_fd, const char* dls_file, int padlen, uint8_t charset)
{
char dlstext[MAXDLS];
int dlslen;
@@ -851,13 +903,13 @@ void writeDLS(int output_fd, const char* dls_file, int padlen)
fprintf(stderr, "mot-encoder writing DLS text \"%s\"\n", dlstext);
}
- create_dls_datagroup(dlstext, padlen);
+ create_dls_datagroup(dlstext, padlen, charset);
for (i = 0; i < dlsdg.size(); i++) {
size_t dummy = write(output_fd, &dlsdg[i].front(), dlsdg[i].size());
}
}
-void create_dls_datagroup(char* text, int padlen)
+void create_dls_datagroup(char* text, int padlen, uint8_t charset)
{
int numdg = 0; // Number of data groups
int numseg; // Number of DSL segments
@@ -964,7 +1016,7 @@ void create_dls_datagroup(char* text, int padlen)
if (firstseg==1) {
// DLS Prefix (Charset standard)
- dlsdg[i][padlen-6]=0x00;
+ dlsdg[i][padlen-6] = charset << 4;
}
else {
// DLS SegNum
@@ -1035,7 +1087,7 @@ void create_dls_datagroup(char* text, int padlen)
if (firstseg == 1) {
// DLS Prefix (Charset standard)
- dlsdg[i][padlen-6] = 0x00;
+ dlsdg[i][padlen-6] = charset << 4;
}
else {
// DLS SegNum
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-11 10:34:23 +0000