*
* Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
#include <vlc_plugin.h>
#include <vlc_codec.h>
#include <vlc_memory.h>
+#include <vlc_charset.h>
/*****************************************************************************
* Module descriptor
/*****************************************************************************
* Local definitions/prototypes
*****************************************************************************/
+#define GSI_BLOCK_SIZE 1024
+
+typedef enum {
+ CCT_ISO_6937_2 = 0x3030, CCT_BEGIN = CCT_ISO_6937_2,
+ CCT_ISO_8859_5 = 0x3031,
+ CCT_ISO_8859_6 = 0x3032,
+ CCT_ISO_8859_7 = 0x3033,
+ CCT_ISO_8859_8 = 0x3034, CCT_END = CCT_ISO_8859_8
+} cct_number_value_t;
+
+typedef struct {
+ cct_number_value_t value;
+ const char *str;
+} cct_number_t;
+
struct decoder_sys_t {
- int dummy;
+ cct_number_value_t cct;
};
-static char *ParseText(uint8_t *data, int size)
+static cct_number_t cct_nums[] = { {CCT_ISO_6937_2, "ISO_6937-2"},
+ {CCT_ISO_8859_5, "ISO_8859-5"},
+ {CCT_ISO_8859_6, "ISO_8859-6"},
+ {CCT_ISO_8859_7, "ISO_8859-7"},
+ {CCT_ISO_8859_8, "ISO_8859-8"} };
+
+
+static char *ParseText(const uint8_t *data, size_t size, const char *charset)
{
- char *text = strdup("");
- int text_size = 0;
+ char *text = malloc(size);
+ if (text == NULL)
+ return NULL;
- for (int i = 0; i < size; i++) {
+ size_t text_size = 0;
+
+ for (size_t i = 0; i < size; i++) {
uint8_t code = data[i];
if (code == 0x8f)
break;
-
- char tmp[16] = "";
- char *t = tmp;
- if (code >= 0x20 && code <= 0x7f)
- snprintf(tmp, sizeof(tmp), "%c", code);
-#if 0
- else if (code == 0x80)
- snprintf(tmp, sizeof(tmp), "<i>");
- else if (code == 0x81)
- snprintf(tmp, sizeof(tmp), "</i>");
- else if (code == 0x82)
- snprintf(tmp, sizeof(tmp), "<u>");
- else if (code == 0x83)
- snprintf(tmp, sizeof(tmp), "</u>");
-#endif
- else if (code == 0x8a)
- snprintf(tmp, sizeof(tmp), "\n");
- else {
- fprintf(stderr, "--> %2.2x\n", code);
- t = NULL;
- }
-
- if (!t)
- continue;
- size_t t_size = strlen(t);
- text = realloc_or_free(text, t_size + text_size + 1);
- if (!text)
+ if (code == 0x7f)
continue;
- memcpy(&text[text_size], t, t_size);
- text_size += t_size;
- text[text_size] = '\0';
+ /* TODO: italics begin/end 0x80/0x81, underline being/end 0x82/0x83 */
+ if (code & 0x60)
+ text[text_size++] = code;
+ if (code == 0x8a)
+ text[text_size++] = '\n';
}
- return text;
+
+ char *u8 = FromCharset(charset, text, text_size);
+ free(text);
+ return u8;
}
static subpicture_t *Decode(decoder_t *dec, block_t **block)
uint8_t *payload = malloc(payload_size);
if (!payload)
goto exit;
- for (int i = 0; i < b->i_buffer / 128; i++)
+ for (unsigned i = 0; i < b->i_buffer / 128; i++)
memcpy(&payload[112 * i], &b->p_buffer[128 * i + 16], 112);
sub = decoder_NewSubpicture(dec, NULL);
video_format_Clean(&fmt);
if (sub->p_region) {
- sub->p_region->psz_text = ParseText(payload, payload_size);
+ sub->p_region->psz_text = ParseText(payload,
+ payload_size,
+ cct_nums[dec->p_sys->cct - CCT_BEGIN].str);
+ sub->p_region->i_align = SUBPICTURE_ALIGN_BOTTOM;
sub->p_region->psz_html = NULL;
}
return sub;
}
+static int ExtractCCT(const decoder_t *dec, cct_number_value_t *cct_number)
+{
+ uint8_t *header = dec->fmt_in.p_extra;
+ if (!header) {
+ msg_Err(dec, "NULL EBU header (GSI block)\n");
+ return VLC_EGENERIC;
+ }
+
+ if (GSI_BLOCK_SIZE != dec->fmt_in.i_extra) {
+ msg_Err(dec, "EBU header is not in expected size (%d)\n", dec->fmt_in.i_extra);
+ return VLC_EGENERIC;
+ }
+
+ int cct = (header[12] << 8) | header[13];
+ if (CCT_BEGIN > cct || CCT_END < cct) {
+ msg_Err(dec, "EBU header contains illegal CCT (0x%x)\n", cct);
+ return VLC_EGENERIC;
+ }
+
+ *cct_number = cct;
+
+ return VLC_SUCCESS;
+}
+
static int Open(vlc_object_t *object)
{
decoder_t *dec = (decoder_t*)object;
if (dec->fmt_in.i_codec != VLC_CODEC_EBU_STL)
return VLC_EGENERIC;
+ cct_number_value_t cct;
+ int rc = ExtractCCT(dec, &cct);
+ if (VLC_SUCCESS != rc)
+ return rc;
+
+ msg_Dbg(dec, "CCT=0x%x", cct);
+
decoder_sys_t *sys = malloc(sizeof(*sys));
+ if (!sys)
+ return VLC_ENOMEM;
+
+ sys->cct = cct;
dec->p_sys = sys;
dec->pf_decode_sub = Decode;
free(sys);
}
-
projects / vlc / blobdiff