diff options
| -rw-r--r-- | src/spu_dec/sputext_demuxer.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/spu_dec/sputext_demuxer.c b/src/spu_dec/sputext_demuxer.c index 2b7f506bf..a7625bf0a 100644 --- a/src/spu_dec/sputext_demuxer.c +++ b/src/spu_dec/sputext_demuxer.c @@ -94,6 +94,8 @@ typedef struct { int format; /* constants see below */ char next_line[SUB_BUFSIZE]; /* a buffer for next line read from file */ + char *encoding; /* charset. NULL if unknown. currently only "utf-8" autodetected. */ + } demux_sputext_t; typedef struct demux_sputext_class_s { @@ -1105,6 +1107,44 @@ static int sub_autodetect (demux_sputext_t *this) { return FORMAT_UNKNOWN; /* too many bad lines */ } +static int detect_utf8(subtitle_t *subs, int num_subs) +{ + /* return: + -1: unknown (ASCII?) + 0: not valid utf-8 + 1: valid utf-8 + */ + int i, l, utf8 = -1; + + for (i = 0; i < num_subs; i++) { + for (l = 0; l < subs[i].lines && subs[i].text[l]; l++) { + const uint8_t *c = subs[i].text[l]; + for (; *c; c++) { + if (*c & 0x80) { + if ( (c[0]>=0xC2 && c[0]<=0xDF) && (c[1]>=0x80 && c[1]<=0xBF) ) { + /* valid 2-byte */ + utf8 = 1; + c++; + } else if ( ( c[0]==0xE0 && (c[1]>=0xA0 && c[1]<=0xBF) && (c[2]>=0x80 && c[1]<=0xBF)) || + ( (c[0]>=0xE1 && c[0]<=0xEC) && (c[1]>=0x80 && c[1]<=0xBF) && (c[2]>=0x80 && c[1]<=0xBF)) || + ( c[0]==0xED && (c[1]>=0x80 && c[1]<=0x9F) && (c[2]>=0x80 && c[1]<=0xBF)) || + ( c[0]==0xEE && (c[1]>=0xA4 && c[1]<=0xBF) && (c[2]>=0x80 && c[1]<=0xBF) ) || + ( c[0]==0xEF && (c[1]>=0xA4 && c[1]<=0xBF) && (c[2]>=0x80 && c[1]<=0xBF) )) { + /* valid 3-byte */ + utf8 = 1; + c += 2; + } else { + /* TODO: 4-byte not checked */ + return 0; + } + } + } + } + } + + return utf8; +} + static subtitle_t *sub_read_file (demux_sputext_t *this) { int n_max; @@ -1196,6 +1236,11 @@ static subtitle_t *sub_read_file (demux_sputext_t *this) { first[this->num-1].end = first[this->num-1].start + timeout; } + if (detect_utf8(first, this->num) > 0) { + xprintf (this->stream->xine, XINE_VERBOSITY_LOG, "detected utf-8 subtitles\n"); + this->encoding = strdup("utf-8"); + } + if(this->stream->xine->verbosity >= XINE_VERBOSITY_DEBUG) { char buffer[1024]; @@ -1240,6 +1285,13 @@ static int demux_sputext_next (demux_sputext_t *this_gen) { str[SUB_BUFSIZE-1] = '\0'; } + if (this->encoding) { + buf->decoder_flags |= BUF_FLAG_SPECIAL; + buf->decoder_info[1] = BUF_SPECIAL_CHARSET_ENCODING; + buf->decoder_info_ptr[2] = this->encoding; + buf->decoder_info[2] = strlen(buf->decoder_info_ptr[2]); + } + this->stream->video_fifo->put(this->stream->video_fifo, buf); this->cur++; @@ -1255,6 +1307,7 @@ static void demux_sputext_dispose (demux_plugin_t *this_gen) { free(this->subtitles[i].text[l]); } free(this->subtitles); + free(this->encoding); free(this); } |