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-rw-r--r--src/spu_dec/cmml_decoder.c525
1 files changed, 525 insertions, 0 deletions
diff --git a/src/spu_dec/cmml_decoder.c b/src/spu_dec/cmml_decoder.c
new file mode 100644
index 000000000..53d5fa9ea
--- /dev/null
+++ b/src/spu_dec/cmml_decoder.c
@@ -0,0 +1,525 @@
+/*
+ * Copyright (C) 2000-2008 the xine project
+ *
+ * This file is part of xine, a free video player.
+ *
+ * xine 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
+ * (at your option) any later version.
+ *
+ * xine 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.
+ *
+ * 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, USA
+ */
+
+#define LOG_MODULE "libspucmml"
+#define LOG_VERBOSE
+/*
+#define LOG
+*/
+#define LOG_OSD 0
+#define LOG_SCHEDULING 0
+#define LOG_WIDTH 0
+
+#define SUB_BUFSIZE 1024
+#define SUB_MAX_TEXT 5
+
+#include <xine/xine_internal.h>
+
+typedef enum {
+ SUBTITLE_SIZE_SMALL = 0,
+ SUBTITLE_SIZE_NORMAL,
+ SUBTITLE_SIZE_LARGE,
+
+ SUBTITLE_SIZE_NUM /* number of values in enum */
+} subtitle_size;
+
+
+typedef struct spucmml_class_s {
+ spu_decoder_class_t class;
+ char *src_encoding; /* encoding of subtitle file */
+ xine_t *xine;
+
+} spucmml_class_t;
+
+
+typedef struct cmml_anchor_s {
+ char *text;
+ char *href;
+} cmml_anchor_t;
+
+
+typedef struct spucmml_decoder_s {
+ spu_decoder_t spu_decoder;
+
+ spucmml_class_t *class;
+ xine_stream_t *stream;
+
+ xine_event_queue_t *event_queue;
+
+ int lines;
+ char text[SUB_MAX_TEXT][SUB_BUFSIZE];
+
+ int cached_width; /* frame width */
+ int cached_height; /* frame height */
+ int64_t cached_img_duration;
+ int font_size;
+ int line_height;
+ int master_started;
+ int slave_started;
+
+ char *font; /* subtitle font */
+ subtitle_size subtitle_size; /* size of subtitles */
+ int vertical_offset;
+
+ osd_object_t *osd;
+
+ cmml_anchor_t current_anchor;
+} spucmml_decoder_t;
+
+
+static void video_frame_format_change_callback (void *user_data, const xine_event_t *event);
+
+
+static void update_font_size (spucmml_decoder_t *this) {
+ static const int sizes[SUBTITLE_SIZE_NUM][4] = {
+ { 16, 16, 16, 20 }, /* SUBTITLE_SIZE_SMALL */
+ { 16, 16, 20, 24 }, /* SUBTITLE_SIZE_NORMAL */
+ { 16, 20, 24, 32 }, /* SUBTITLE_SIZE_LARGE */
+ };
+
+ const int *const vec = sizes[this->subtitle_size];
+
+ if( this->cached_width >= 512 )
+ this->font_size = vec[3];
+ else if( this->cached_width >= 384 )
+ this->font_size = vec[2];
+ else if( this->cached_width >= 320 )
+ this->font_size = vec[1];
+ else
+ this->font_size = vec[0];
+
+ this->line_height = this->font_size + 10;
+
+ int y = this->cached_height - (SUB_MAX_TEXT * this->line_height) - 5;
+
+ if(((y - this->vertical_offset) >= 0) && ((y - this->vertical_offset) <= this->cached_height))
+ y -= this->vertical_offset;
+
+ /* TODO: we should move this stuff below into another function */
+
+ if (this->osd)
+ this->stream->osd_renderer->free_object (this->osd);
+
+ llprintf (LOG_OSD,
+ "pre new_object: osd=%p, osd_renderer=%p, width=%d, height=%d\n",
+ this->osd,
+ this->stream->osd_renderer,
+ this->cached_width,
+ SUB_MAX_TEXT * this->line_height);
+
+ this->osd = this->stream->osd_renderer->new_object (this->stream->osd_renderer,
+ this->cached_width, SUB_MAX_TEXT * this->line_height);
+
+ llprintf (LOG_OSD, "post new_object: osd is %p\n", this->osd);
+
+ if(this->stream->osd_renderer) {
+ this->stream->osd_renderer->set_font (this->osd, this->font, this->font_size);
+ this->stream->osd_renderer->set_position (this->osd, 0, y);
+ }
+}
+
+static int get_width(spucmml_decoder_t *this, char* text) {
+ int width=0;
+
+ while (1)
+ switch (*text) {
+ case '\0':
+ llprintf(LOG_WIDTH, "get_width returning width of %d\n", width);
+ return width;
+
+ case '<':
+ if (!strncmp("<b>", text, 3)) {
+ /*Do somethink to enable BOLD typeface*/
+ text += 3;
+ break;
+ } else if (!strncmp("</b>", text, 3)) {
+ /*Do somethink to disable BOLD typeface*/
+ text += 4;
+ break;
+ } else if (!strncmp("<i>", text, 3)) {
+ /*Do somethink to enable italics typeface*/
+ text += 3;
+ break;
+ } else if (!strncmp("</i>", text, 3)) {
+ /*Do somethink to disable italics typeface*/
+ text += 4;
+ break;
+ } else if (!strncmp("<font>", text, 3)) {
+ /*Do somethink to disable typing
+ fixme - no teststreams*/
+ text += 6;
+ break;
+ } else if (!strncmp("</font>", text, 3)) {
+ /*Do somethink to enable typing
+ fixme - no teststreams*/
+ text += 7;
+ break;
+ }
+ default:
+ {
+ int w, dummy;
+ const char letter[2] = { *text, '\0' };
+ this->stream->osd_renderer->get_text_size(this->osd, letter, &w, &dummy);
+ width += w;
+ text++;
+ }
+ }
+}
+
+static void render_line(spucmml_decoder_t *this, int x, int y, char* text) {
+ while (*text != '\0') {
+ int w, dummy;
+ const char letter[2] = { *text, '\0' };
+
+ this->stream->osd_renderer->render_text(this->osd, x, y, letter, OSD_TEXT1);
+ this->stream->osd_renderer->get_text_size(this->osd, letter, &w, &dummy);
+ x += w;
+ text++;
+ }
+}
+
+static void draw_subtitle(spucmml_decoder_t *this, int64_t sub_start) {
+
+ this->stream->osd_renderer->filled_rect (this->osd, 0, 0,
+ this->cached_width-1, this->line_height * SUB_MAX_TEXT - 1, 0);
+
+ const int y = (SUB_MAX_TEXT - this->lines) * this->line_height;
+ int font_size = this->font_size;
+ this->stream->osd_renderer->set_encoding(this->osd, this->class->src_encoding);
+
+ int line;
+
+ for (line=0; line<this->lines; line++) {
+ int x;
+ while(1) {
+ const int w = get_width( this, this->text[line]);
+ x = (this->cached_width - w) / 2;
+
+ if( w > this->cached_width && font_size > 16 ) {
+ font_size -= 4;
+ this->stream->osd_renderer->set_font (this->osd, this->font, font_size);
+ } else {
+ break;
+ }
+ }
+ render_line(this, x, y + line*this->line_height, this->text[line]);
+ }
+
+ if( font_size != this->font_size )
+ this->stream->osd_renderer->set_font (this->osd, this->font, this->font_size);
+
+
+ this->stream->osd_renderer->set_text_palette (this->osd, -1, OSD_TEXT1);
+ this->stream->osd_renderer->show (this->osd, sub_start);
+
+ llprintf (LOG_SCHEDULING,
+ "spucmml: scheduling subtitle >%s< at %"PRId64", current time is %"PRId64"\n",
+ this->text[0], sub_start,
+ this->stream->xine->clock->get_current_time (this->stream->xine->clock));
+}
+
+static void spudec_decode_data (spu_decoder_t *this_gen, buf_element_t *buf) {
+
+ spucmml_decoder_t *this = (spucmml_decoder_t *) this_gen;
+
+ xml_parser_t *xml_parser;
+ xml_node_t *packet_xml_root;
+ char * anchor_text = NULL;
+
+ lprintf("CMML packet seen\n");
+
+ char *str = (char *) buf->content;
+
+ /* parse the CMML */
+
+ xml_parser = xml_parser_init_r (str, strlen (str), XML_PARSER_CASE_INSENSITIVE);
+ if (xml_parser_build_tree_r(xml_parser, &packet_xml_root) != XML_PARSER_OK) {
+ lprintf ("warning: invalid XML packet detected in CMML track\n");
+ xml_parser_finalize_r(xml_parser);
+ return;
+ }
+
+ xml_parser_finalize_r(xml_parser);
+
+ if (strcasecmp(packet_xml_root->name, "head") == 0) {
+ /* found a <head>...</head> packet: need to parse the title */
+
+ xml_node_t *title_node;
+
+ /* iterate through children trying to find the title node */
+
+ for (title_node = packet_xml_root->child; title_node != NULL; title_node = title_node->next) {
+
+ if (title_node->data &&
+ strcasecmp (title_node->name, "title") == 0) {
+ /* found a title node */
+
+ xine_ui_data_t data = {
+ .str_len = strlen(title_node->data) + 1
+ };
+ xine_event_t uevent = {
+ .type = XINE_EVENT_UI_SET_TITLE,
+ .stream = this->stream,
+ .data = &data,
+ .data_length = sizeof(data),
+ };
+ strncpy(data.str, title_node->data, sizeof(data.str)-1);
+
+ /* found a non-empty title */
+ lprintf ("found title: \"%s\"\n", data.str);
+
+ /* set xine meta-info */
+ _x_meta_info_set(this->stream, XINE_META_INFO_TITLE, strdup(data.str));
+
+ /* and push out a new event signifying the title update on the event
+ * queue */
+ xine_event_send(this->stream, &uevent);
+ }
+ }
+ } else if (strcasecmp(packet_xml_root->name, "clip") == 0) {
+ /* found a <clip>...</clip> packet: search for the <a href="..."> in it */
+ xml_node_t *clip_node;
+
+ /* iterate through each tag contained in the <clip> tag to look for <a> */
+
+ for (clip_node = packet_xml_root->child; clip_node != NULL; clip_node = clip_node->next) {
+
+ if (strcasecmp (clip_node->name, "a") == 0) {
+ xml_property_t *href_property;
+
+ /* found the <a> tag: grab its value and its href property */
+
+ if (clip_node->data)
+ anchor_text = strdup (clip_node->data);
+
+ for (href_property = clip_node->props; href_property != NULL; href_property = href_property->next) {
+ if (strcasecmp (href_property->name, "href") == 0) {
+ /* found the href property */
+ char *href = href_property->value;
+
+ if (href) {
+ lprintf ("found href: \"%s\"\n", href);
+ this->current_anchor.href = strdup(href);
+ }
+ }
+ }
+ }
+ }
+ }
+
+ /* finish here if we don't have to process any anchor text */
+ if (!anchor_text)
+ return;
+
+ /* how many lines does the anchor text take up? */
+ this->lines=0;
+ {
+ int i = 0, index = 0;
+ while (anchor_text[index]) {
+ if (anchor_text[index] == '\r' || anchor_text[index] == '\n') {
+ if (i) {
+ /* match a newline and there are chars on the current line ... */
+ this->text[ this->lines ][i] = '\0';
+ this->lines++;
+ i = 0;
+ }
+ } else {
+ /* found a normal (non-line-ending) character */
+ this->text[ this->lines ][i] = anchor_text[index];
+ if (i<SUB_BUFSIZE-1)
+ i++;
+ }
+ index++;
+ }
+
+ /* always NULL-terminate the string */
+ if (i) {
+ this->text[ this->lines ][i] = '\0';
+ this->lines++;
+ }
+ }
+ free (anchor_text);
+
+ /* initialize decoder if needed */
+ if( !this->cached_width || !this->cached_height || !this->cached_img_duration || !this->osd ) {
+ if( this->stream->video_out->status(this->stream->video_out, NULL,
+ &this->cached_width, &this->cached_height, &this->cached_img_duration )) {
+ if( this->cached_width && this->cached_height && this->cached_img_duration ) {
+ lprintf("this->stream->osd_renderer is %p\n", this->stream->osd_renderer);
+ }
+ }
+ }
+
+ update_font_size (this);
+
+ if( this->osd ) {
+ draw_subtitle(this, buf->pts);
+ return;
+ } else {
+ lprintf ("libspucmml: no osd\n");
+ }
+
+ return;
+}
+
+static void video_frame_format_change_callback (void *user_data, const xine_event_t *event)
+{
+ /* this doesn't do anything for now: it's a start at attempting to display
+ * CMML clips which occur at 0 seconds into the track. see
+ *
+ * http://marc.theaimsgroup.com/?l=xine-devel&m=109202443013890&w=2
+ *
+ * for a description of the problem. */
+
+ switch (event->type) {
+ case XINE_EVENT_FRAME_FORMAT_CHANGE:
+ lprintf("video_frame_format_change_callback called!\n");
+ break;
+ default:
+ lprintf("video_frame_format_change_callback called with unknown event %d\n", event->type);
+ break;
+ }
+}
+
+static void spudec_reset (spu_decoder_t *this_gen) {
+ spucmml_decoder_t *this = (spucmml_decoder_t *) this_gen;
+
+ this->cached_width = this->cached_height = 0;
+}
+
+static void spudec_discontinuity (spu_decoder_t *this_gen) {
+ /* do nothing */
+}
+
+static void spudec_dispose (spu_decoder_t *this_gen) {
+ spucmml_decoder_t *this = (spucmml_decoder_t *) this_gen;
+
+ if (this->event_queue)
+ xine_event_dispose_queue (this->event_queue);
+
+ if (this->osd) {
+ this->stream->osd_renderer->free_object (this->osd);
+ this->osd = NULL;
+ }
+ free(this);
+}
+
+static void update_vertical_offset(void *this_gen, xine_cfg_entry_t *entry)
+{
+ spucmml_decoder_t *this = (spucmml_decoder_t *)this_gen;
+
+ this->vertical_offset = entry->num_value;
+ update_font_size(this);
+}
+
+static void update_osd_font(void *this_gen, xine_cfg_entry_t *entry)
+{
+ spucmml_decoder_t *this = (spucmml_decoder_t *)this_gen;
+
+ this->font = entry->str_value;
+
+ if( this->stream->osd_renderer )
+ this->stream->osd_renderer->set_font (this->osd, this->font, this->font_size);
+}
+
+static spu_decoder_t *spucmml_class_open_plugin (spu_decoder_class_t *class_gen, xine_stream_t *stream) {
+ spucmml_class_t *class = (spucmml_class_t *)class_gen;
+ spucmml_decoder_t *this = (spucmml_decoder_t *) calloc(1, sizeof(spucmml_decoder_t));
+
+ this->spu_decoder.decode_data = spudec_decode_data;
+ this->spu_decoder.reset = spudec_reset;
+ this->spu_decoder.discontinuity = spudec_discontinuity;
+ this->spu_decoder.dispose = spudec_dispose;
+ this->spu_decoder.get_interact_info = NULL;
+ this->spu_decoder.set_button = NULL;
+ this->spu_decoder.dispose = spudec_dispose;
+
+ this->class = class;
+ this->stream = stream;
+
+ this->event_queue = xine_event_new_queue (this->stream);
+ xine_event_create_listener_thread (this->event_queue,
+ video_frame_format_change_callback,
+ this);
+
+ this->font_size = 24;
+ this->subtitle_size = 1;
+
+ this->font = class->xine->config->register_string(class->xine->config,
+ "subtitles.separate.font",
+ "sans",
+ _("font for external subtitles"),
+ NULL, 0, update_osd_font, this);
+
+ this->vertical_offset = class->xine->config->register_num(class->xine->config,
+ "subtitles.separate.vertical_offset",
+ 0,
+ _("subtitle vertical offset (relative window size)"),
+ NULL, 0, update_vertical_offset, this);
+
+ this->current_anchor.href = NULL;
+
+ lprintf ("video_out is at %p\n", this->stream->video_out);
+
+ return (spu_decoder_t *) this;
+}
+
+static void update_src_encoding(void *this_gen, xine_cfg_entry_t *entry)
+{
+ spucmml_class_t *this = (spucmml_class_t *)this_gen;
+
+ this->src_encoding = entry->str_value;
+ printf("libspucmml: spu_src_encoding = %s\n", this->src_encoding );
+}
+
+static void *init_spu_decoder_plugin (xine_t *xine, void *data) {
+ spucmml_class_t *this = (spucmml_class_t *) calloc(1, sizeof(spucmml_class_t));
+
+ this->class.open_plugin = spucmml_class_open_plugin;
+ this->class.identifier = "spucmml";
+ this->class.description = N_("CMML subtitle decoder plugin");
+ this->class.dispose = default_spu_decoder_class_dispose;
+
+ this->xine = xine;
+
+ this->src_encoding = xine->config->register_string(xine->config,
+ "subtitles.separate.src_encoding",
+ "iso-8859-1",
+ _("encoding of subtitles"),
+ NULL, 10, update_src_encoding, this);
+
+ return &this->class;
+}
+
+
+/* plugin catalog information */
+static const uint32_t supported_types[] = { BUF_SPU_CMML, 0 };
+
+static const decoder_info_t spudec_info = {
+ supported_types, /* supported types */
+ 1 /* priority */
+};
+
+const plugin_info_t xine_plugin_info[] EXPORTED = {
+ /* type, API, "name", version, special_info, init_function */
+ { PLUGIN_SPU_DECODER, 17, "spucmml", XINE_VERSION_CODE, &spudec_info, &init_spu_decoder_plugin },
+ { PLUGIN_NONE, 0, "", 0, NULL, NULL }
+};
+
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-25 14:07:24 +0000