diff options
author | Mark Purcell <msp@debian.org> | 2008-06-22 11:00:40 +1000 |
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committer | etobi <git@e-tobi.net> | 2013-09-03 09:48:42 +0200 |
commit | 891c51ff368ed700dec6025eeb47ce4d96f76418 (patch) | |
tree | 3729664829e4faa691d403274f38eb10890b533c /lib/libdvben50221/en50221_app_mmi.c | |
parent | 1c6e1f28f54ec2606c23936c1d8689f2be55a86c (diff) | |
parent | ab959d7b4194715870128e616b8e29d4a101e488 (diff) | |
download | linux-dvb-apps-debian/1.1.1+rev1207-1.tar.gz |
Imported Debian patch 1.1.1+rev1207-1debian/1.1.1+rev1207-1
Diffstat (limited to '')
-rw-r--r-- | lib/libdvben50221/en50221_app_mmi.c | 1397 |
1 files changed, 1397 insertions, 0 deletions
diff --git a/lib/libdvben50221/en50221_app_mmi.c b/lib/libdvben50221/en50221_app_mmi.c new file mode 100644 index 0000000..830eaa3 --- /dev/null +++ b/lib/libdvben50221/en50221_app_mmi.c @@ -0,0 +1,1397 @@ +/* + en50221 encoder An implementation for libdvb + an implementation for the en50221 transport layer + + Copyright (C) 2004, 2005 Manu Abraham <abraham.manu@gmail.com> + Copyright (C) 2005 Julian Scheel (julian at jusst dot de) + Copyright (C) 2006 Andrew de Quincey (adq_dvb@lidskialf.net) + + This library 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 Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA +*/ + +#include <string.h> +#include <libdvbmisc/dvbmisc.h> +#include <pthread.h> +#include <libucsi/dvb/types.h> +#include "en50221_app_mmi.h" +#include "en50221_app_tags.h" +#include "asn_1.h" + +struct en50221_app_mmi_session { + uint16_t session_number; + + uint8_t *menu_block_chain; + uint32_t menu_block_length; + + uint8_t *list_block_chain; + uint32_t list_block_length; + + uint8_t *subtitlesegment_block_chain; + uint32_t subtitlesegment_block_length; + + uint8_t *subtitledownload_block_chain; + uint32_t subtitledownload_block_length; + + struct en50221_app_mmi_session *next; +}; + +struct en50221_app_mmi { + struct en50221_app_send_functions *funcs; + struct en50221_app_mmi_session *sessions; + + en50221_app_mmi_close_callback closecallback; + void *closecallback_arg; + + en50221_app_mmi_display_control_callback displaycontrolcallback; + void *displaycontrolcallback_arg; + + en50221_app_mmi_keypad_control_callback keypadcontrolcallback; + void *keypadcontrolcallback_arg; + + en50221_app_mmi_subtitle_segment_callback subtitlesegmentcallback; + void *subtitlesegmentcallback_arg; + + en50221_app_mmi_scene_end_mark_callback sceneendmarkcallback; + void *sceneendmarkcallback_arg; + + en50221_app_mmi_scene_control_callback scenecontrolcallback; + void *scenecontrolcallback_arg; + + en50221_app_mmi_subtitle_download_callback subtitledownloadcallback; + void *subtitledownloadcallback_arg; + + en50221_app_mmi_flush_download_callback flushdownloadcallback; + void *flushdownloadcallback_arg; + + en50221_app_mmi_enq_callback enqcallback; + void *enqcallback_arg; + + en50221_app_mmi_menu_callback menucallback; + void *menucallback_arg; + + en50221_app_mmi_list_callback listcallback; + void *listcallback_arg; + + pthread_mutex_t lock; +}; + +static int en50221_app_mmi_parse_close(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length); +static int en50221_app_mmi_parse_display_control(struct en50221_app_mmi + *mmi, uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length); +static int en50221_app_mmi_parse_keypad_control(struct en50221_app_mmi + *mmi, uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length); +static int en50221_app_mmi_parse_enq(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, uint32_t data_length); +static int en50221_app_mmi_parse_list_menu(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint32_t tag_id, int more_last, + uint8_t * data, + uint32_t data_length); +static int en50221_app_mmi_parse_subtitle(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint32_t tag_id, int more_last, + uint8_t * data, + uint32_t data_length); +static int en50221_app_mmi_parse_scene_end_mark(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length); +static int en50221_app_mmi_parse_scene_control(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length); +static int en50221_app_mmi_parse_subtitle(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint32_t tag_id, int more_last, + uint8_t * data, + uint32_t data_length); +static int en50221_app_mmi_parse_flush_download(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length); +static int en50221_app_mmi_defragment(struct en50221_app_mmi *mmi, + uint16_t session_number, + uint32_t tag_id, int more_last, + uint8_t * indata, + uint32_t indata_length, + uint8_t ** outdata, + uint32_t * outdata_length); +static int en50221_app_mmi_defragment_text(uint8_t * data, + uint32_t data_length, + uint8_t ** outdata, + uint32_t * outdata_length, + uint32_t * outconsumed); + + + +struct en50221_app_mmi *en50221_app_mmi_create(struct en50221_app_send_functions *funcs) +{ + struct en50221_app_mmi *mmi = NULL; + + // create structure and set it up + mmi = malloc(sizeof(struct en50221_app_mmi)); + if (mmi == NULL) { + return NULL; + } + mmi->funcs = funcs; + mmi->closecallback = NULL; + mmi->displaycontrolcallback = NULL; + mmi->keypadcontrolcallback = NULL; + mmi->subtitlesegmentcallback = NULL; + mmi->sceneendmarkcallback = NULL; + mmi->scenecontrolcallback = NULL; + mmi->subtitledownloadcallback = NULL; + mmi->flushdownloadcallback = NULL; + mmi->enqcallback = NULL; + mmi->menucallback = NULL; + mmi->listcallback = NULL; + mmi->sessions = NULL; + + pthread_mutex_init(&mmi->lock, NULL); + + // done + return mmi; +} + +void en50221_app_mmi_destroy(struct en50221_app_mmi *mmi) +{ + struct en50221_app_mmi_session *cur_s = mmi->sessions; + while (cur_s) { + struct en50221_app_mmi_session *next = cur_s->next; + if (cur_s->menu_block_chain) + free(cur_s->menu_block_chain); + if (cur_s->list_block_chain) + free(cur_s->list_block_chain); + if (cur_s->subtitlesegment_block_chain) + free(cur_s->subtitlesegment_block_chain); + if (cur_s->subtitledownload_block_chain) + free(cur_s->subtitledownload_block_chain); + free(cur_s); + cur_s = next; + } + + pthread_mutex_destroy(&mmi->lock); + free(mmi); +} + +void en50221_app_mmi_clear_session(struct en50221_app_mmi *mmi, + uint16_t session_number) +{ + pthread_mutex_lock(&mmi->lock); + struct en50221_app_mmi_session *cur_s = mmi->sessions; + struct en50221_app_mmi_session *prev_s = NULL; + while (cur_s) { + if (cur_s->session_number == session_number) { + if (cur_s->menu_block_chain) + free(cur_s->menu_block_chain); + if (cur_s->list_block_chain) + free(cur_s->list_block_chain); + if (cur_s->subtitlesegment_block_chain) + free(cur_s->subtitlesegment_block_chain); + if (cur_s->subtitledownload_block_chain) + free(cur_s->subtitledownload_block_chain); + if (prev_s) { + prev_s->next = cur_s->next; + } else { + mmi->sessions = cur_s->next; + } + free(cur_s); + return; + } + + prev_s = cur_s; + cur_s = cur_s->next; + } + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_close_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_close_callback callback, + void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->closecallback = callback; + mmi->closecallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_display_control_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_display_control_callback callback, + void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->displaycontrolcallback = callback; + mmi->displaycontrolcallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_keypad_control_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_keypad_control_callback callback, + void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->keypadcontrolcallback = callback; + mmi->keypadcontrolcallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_subtitle_segment_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_subtitle_segment_callback callback, + void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->subtitlesegmentcallback = callback; + mmi->subtitlesegmentcallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_scene_end_mark_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_scene_end_mark_callback callback, void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->sceneendmarkcallback = callback; + mmi->sceneendmarkcallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_scene_control_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_scene_control_callback callback, void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->scenecontrolcallback = callback; + mmi->scenecontrolcallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_subtitle_download_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_subtitle_download_callback callback, + void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->subtitledownloadcallback = callback; + mmi->subtitledownloadcallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_flush_download_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_flush_download_callback callback, + void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->flushdownloadcallback = callback; + mmi->flushdownloadcallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_enq_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_enq_callback callback, + void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->enqcallback = callback; + mmi->enqcallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_menu_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_menu_callback callback, + void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->menucallback = callback; + mmi->menucallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +void en50221_app_mmi_register_list_callback(struct en50221_app_mmi *mmi, + en50221_app_mmi_list_callback callback, + void *arg) +{ + pthread_mutex_lock(&mmi->lock); + mmi->listcallback = callback; + mmi->listcallback_arg = arg; + pthread_mutex_unlock(&mmi->lock); +} + +int en50221_app_mmi_close(struct en50221_app_mmi *mmi, + uint16_t session_number, + uint8_t cmd_id, uint8_t delay) +{ + uint8_t data[6]; + int data_length = 5; + + data[0] = (TAG_CLOSE_MMI >> 16) & 0xFF; + data[1] = (TAG_CLOSE_MMI >> 8) & 0xFF; + data[2] = TAG_CLOSE_MMI & 0xFF; + data[3] = 1; + data[4] = cmd_id; + if (cmd_id == MMI_CLOSE_MMI_CMD_ID_DELAY) { + data[3] = 2; + data[5] = delay; + data_length = 6; + } + return mmi->funcs->send_data(mmi->funcs->arg, session_number, data, + data_length); +} + +int en50221_app_mmi_display_reply(struct en50221_app_mmi *mmi, + uint16_t session_number, + uint8_t reply_id, + struct en50221_app_mmi_display_reply_details *details) +{ + uint8_t data[32]; + struct iovec iov[2]; + uint32_t iov_count; + int length_field_len; + + // fill out the start of the header + data[0] = (TAG_DISPLAY_REPLY >> 16) & 0xFF; + data[1] = (TAG_DISPLAY_REPLY >> 8) & 0xFF; + data[2] = TAG_DISPLAY_REPLY & 0xFF; + + switch (reply_id) { + case MMI_DISPLAY_REPLY_ID_MMI_MODE_ACK: + data[3] = 2; + data[4] = reply_id; + data[5] = details->u.mode_ack.mmi_mode; + iov[0].iov_base = data; + iov[0].iov_len = 6; + iov_count = 1; + break; + + case MMI_DISPLAY_REPLY_ID_LIST_DISPLAY_CHAR_TABLES: + case MMI_DISPLAY_REPLY_ID_LIST_INPUT_CHAR_TABLES: + if ((length_field_len = + asn_1_encode(details->u.char_table.table_length + 1, data + 3, 3)) < 0) { + return -1; + } + data[3 + length_field_len] = reply_id; + iov[0].iov_base = data; + iov[0].iov_len = 3 + length_field_len + 1; + iov[1].iov_base = details->u.char_table.table; + iov[1].iov_len = details->u.char_table.table_length; + iov_count = 2; + break; + + case MMI_DISPLAY_REPLY_ID_LIST_OVERLAY_GFX_CHARACTERISTICS: + case MMI_DISPLAY_REPLY_ID_LIST_FULLSCREEN_GFX_CHARACTERISTICS: + { + if ((length_field_len = + asn_1_encode(1 + 9 + (details->u.gfx.num_pixel_depths * 2), data + 3, 3)) < 0) { + return -1; + } + data[3 + length_field_len] = reply_id; + data[3 + length_field_len + 1] = details->u.gfx.width >> 8; + data[3 + length_field_len + 2] = details->u.gfx.width; + data[3 + length_field_len + 3] = details->u.gfx.height >> 8; + data[3 + length_field_len + 4] = details->u.gfx.height; + data[3 + length_field_len + 5] = + ((details->u.gfx.aspect_ratio & 0x0f) << 4) | + ((details->u.gfx.gfx_relation_to_video & 0x07) << 1) | + (details->u.gfx.multiple_depths & 1); + data[3 + length_field_len + 6] = details->u.gfx.display_bytes >> 4; + data[3 + length_field_len + 7] = + ((details->u.gfx.display_bytes & 0x0f) << 4) | + ((details->u.gfx.composition_buffer_bytes & 0xf0) >> 4); + data[3 + length_field_len + 8] = + ((details->u.gfx.composition_buffer_bytes & 0x0f) << 4) | + ((details->u.gfx.object_cache_bytes & 0xf0) >> 4); + data[3 + length_field_len + 9] = + ((details->u.gfx.object_cache_bytes & 0x0f) << 4) | + (details->u.gfx.num_pixel_depths & 0x0f); + + // render the pixel depths themselves + uint8_t *pixdepths = + alloca(details->u.gfx.num_pixel_depths * 2); + if (pixdepths == NULL) { + return -1; + } + uint32_t i; + for (i = 0; i < details->u.gfx.num_pixel_depths; i++) { + pixdepths[0] = + ((details->u.gfx.pixel_depths[i].display_depth & 0x07) << 5) | + ((details->u.gfx.pixel_depths[i].pixels_per_byte & 0x07) << 2); + pixdepths[1] = + details->u.gfx.pixel_depths[i].region_overhead; + pixdepths += 2; + } + + // make up the iovs + iov[0].iov_base = data; + iov[0].iov_len = 3 + length_field_len + 10; + iov[1].iov_base = pixdepths; + iov[1].iov_len = + details->u.gfx.num_pixel_depths * 2; + iov_count = 2; + break; + } + + default: + data[3] = 1; + data[4] = reply_id; + iov[0].iov_base = data; + iov[0].iov_len = 5; + iov_count = 1; + break; + } + + // sendit + return mmi->funcs->send_datav(mmi->funcs->arg, session_number, iov, iov_count); +} + +int en50221_app_mmi_keypress(struct en50221_app_mmi *mmi, + uint16_t session_number, uint8_t keycode) +{ + uint8_t data[5]; + + data[0] = (TAG_KEYPRESS >> 16) & 0xFF; + data[1] = (TAG_KEYPRESS >> 8) & 0xFF; + data[2] = TAG_KEYPRESS & 0xFF; + data[3] = 1; + data[4] = keycode; + return mmi->funcs->send_data(mmi->funcs->arg, session_number, data, 5); +} + +int en50221_app_mmi_display_message(struct en50221_app_mmi *mmi, + uint16_t session_number, + uint8_t display_message_id) +{ + uint8_t data[5]; + + data[0] = (TAG_DISPLAY_MESSAGE >> 16) & 0xFF; + data[1] = (TAG_DISPLAY_MESSAGE >> 8) & 0xFF; + data[2] = TAG_DISPLAY_MESSAGE & 0xFF; + data[3] = 1; + data[4] = display_message_id; + return mmi->funcs->send_data(mmi->funcs->arg, session_number, data, 5); +} + +int en50221_app_mmi_scene_done(struct en50221_app_mmi *mmi, + uint16_t session_number, + uint8_t decoder_continue, + uint8_t scene_reveal, uint8_t scene_tag) +{ + uint8_t data[5]; + + data[0] = (TAG_SCENE_DONE >> 16) & 0xFF; + data[1] = (TAG_SCENE_DONE >> 8) & 0xFF; + data[2] = TAG_SCENE_DONE & 0xFF; + data[3] = 1; + data[4] = + (decoder_continue ? 0x80 : 0x00) | + (scene_reveal ? 0x40 : 0x00) | + (scene_tag & 0x0f); + return mmi->funcs->send_data(mmi->funcs->arg, session_number, data, 5); +} + +int en50221_app_mmi_download_reply(struct en50221_app_mmi *mmi, + uint16_t session_number, + uint16_t object_id, + uint8_t download_reply_id) +{ + uint8_t data[7]; + + data[0] = (TAG_DOWNLOAD_REPLY >> 16) & 0xFF; + data[1] = (TAG_DOWNLOAD_REPLY >> 8) & 0xFF; + data[2] = TAG_DOWNLOAD_REPLY & 0xFF; + data[3] = 3; + data[4] = object_id >> 8; + data[5] = object_id; + data[6] = download_reply_id; + return mmi->funcs->send_data(mmi->funcs->arg, session_number, data, 7); +} + +int en50221_app_mmi_answ(struct en50221_app_mmi *mmi, + uint16_t session_number, + uint8_t answ_id, + uint8_t * text, uint32_t text_count) +{ + uint8_t buf[10]; + + // set up the tag + buf[0] = (TAG_ANSWER >> 16) & 0xFF; + buf[1] = (TAG_ANSWER >> 8) & 0xFF; + buf[2] = TAG_ANSWER & 0xFF; + + // encode the length field + struct iovec iov[2]; + int length_field_len = 0; + int iov_count = 1; + if (answ_id == MMI_ANSW_ID_ANSWER) { + if ((length_field_len = asn_1_encode(text_count + 1, buf + 3, 3)) < 0) { + return -1; + } + buf[3 + length_field_len] = answ_id; + + iov[0].iov_base = buf; + iov[0].iov_len = 3 + length_field_len + 1; + iov[1].iov_base = text; + iov[1].iov_len = text_count; + iov_count = 2; + } else { + buf[3] = 1; + buf[4] = answ_id; + iov[0].iov_base = buf; + iov[0].iov_len = 5; + iov_count = 1; + } + + // create the data and send it + return mmi->funcs->send_datav(mmi->funcs->arg, session_number, iov, + iov_count); +} + +int en50221_app_mmi_menu_answ(struct en50221_app_mmi *mmi, + uint16_t session_number, uint8_t choice_ref) +{ + uint8_t data[5]; + + data[0] = (TAG_MENU_ANSWER >> 16) & 0xFF; + data[1] = (TAG_MENU_ANSWER >> 8) & 0xFF; + data[2] = TAG_MENU_ANSWER & 0xFF; + data[3] = 1; + data[4] = choice_ref; + return mmi->funcs->send_data(mmi->funcs->arg, session_number, data, 5); +} + +int en50221_app_mmi_message(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint32_t resource_id, + uint8_t * data, uint32_t data_length) +{ + (void) resource_id; + + // get the tag + if (data_length < 3) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + uint32_t tag = (data[0] << 16) | (data[1] << 8) | data[2]; + + switch (tag) { + case TAG_CLOSE_MMI: + return en50221_app_mmi_parse_close(mmi, slot_id, + session_number, + data + 3, + data_length - 3); + case TAG_DISPLAY_CONTROL: + return en50221_app_mmi_parse_display_control(mmi, slot_id, + session_number, + data + 3, + data_length - 3); + case TAG_KEYPAD_CONTROL: + return en50221_app_mmi_parse_keypad_control(mmi, slot_id, + session_number, + data + 3, + data_length - 3); + case TAG_ENQUIRY: + return en50221_app_mmi_parse_enq(mmi, slot_id, + session_number, data + 3, + data_length - 3); + case TAG_MENU_LAST: + return en50221_app_mmi_parse_list_menu(mmi, slot_id, + session_number, tag, + 1, data + 3, + data_length - 3); + case TAG_MENU_MORE: + return en50221_app_mmi_parse_list_menu(mmi, slot_id, + session_number, tag, + 0, data + 3, + data_length - 3); + case TAG_LIST_LAST: + return en50221_app_mmi_parse_list_menu(mmi, slot_id, + session_number, tag, + 1, data + 3, + data_length - 3); + case TAG_LIST_MORE: + return en50221_app_mmi_parse_list_menu(mmi, slot_id, + session_number, tag, + 0, data + 3, + data_length - 3); + case TAG_SUBTITLE_SEGMENT_LAST: + return en50221_app_mmi_parse_subtitle(mmi, slot_id, + session_number, tag, + 1, data + 3, + data_length - 3); + case TAG_SUBTITLE_SEGMENT_MORE: + return en50221_app_mmi_parse_subtitle(mmi, slot_id, + session_number, tag, + 0, data + 3, + data_length - 3); + case TAG_SCENE_END_MARK: + return en50221_app_mmi_parse_scene_end_mark(mmi, slot_id, + session_number, + data + 3, + data_length - 3); + case TAG_SCENE_CONTROL: + return en50221_app_mmi_parse_scene_control(mmi, slot_id, + session_number, + data + 3, + data_length - 3); + case TAG_SUBTITLE_DOWNLOAD_LAST: + return en50221_app_mmi_parse_subtitle(mmi, slot_id, + session_number, tag, + 1, data + 3, + data_length - 3); + case TAG_SUBTITLE_DOWNLOAD_MORE: + return en50221_app_mmi_parse_subtitle(mmi, slot_id, + session_number, tag, + 0, data + 3, + data_length - 3); + case TAG_FLUSH_DOWNLOAD: + return en50221_app_mmi_parse_flush_download(mmi, slot_id, + session_number, + data + 3, + data_length - 3); + } + + print(LOG_LEVEL, ERROR, 1, "Received unexpected tag %x\n", tag); + return -1; +} + + + + + +static int en50221_app_mmi_parse_close(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length) +{ + // validate data + if (data_length < 2) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (data[0] > (data_length - 1)) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + uint8_t cmd_id = data[1]; + uint8_t delay = 0; + if (cmd_id == MMI_CLOSE_MMI_CMD_ID_DELAY) { + if (data[0] != 2) { + print(LOG_LEVEL, ERROR, 1, + "Received short data\n"); + return -1; + } + delay = data[2]; + } + // tell the app + pthread_mutex_lock(&mmi->lock); + en50221_app_mmi_close_callback cb = mmi->closecallback; + void *cb_arg = mmi->closecallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number, cmd_id, delay); + } + return 0; +} + +static int en50221_app_mmi_parse_display_control(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t *data, + uint32_t data_length) +{ + // validate data + if (data_length < 2) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (data[0] > (data_length - 1)) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + uint8_t cmd_id = data[1]; + uint8_t mmi_mode = 0; + if (cmd_id == MMI_DISPLAY_CONTROL_CMD_ID_SET_MMI_MODE) { + if (data[0] != 2) { + print(LOG_LEVEL, ERROR, 1, + "Received short data\n"); + return -1; + } + mmi_mode = data[2]; + } + // tell the app + pthread_mutex_lock(&mmi->lock); + en50221_app_mmi_display_control_callback cb = mmi->displaycontrolcallback; + void *cb_arg = mmi->displaycontrolcallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number, cmd_id, mmi_mode); + } + return 0; +} + +static int en50221_app_mmi_parse_keypad_control(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t *data, + uint32_t data_length) +{ + // first of all, decode the length field + uint16_t asn_data_length; + int length_field_len; + if ((length_field_len = asn_1_decode(&asn_data_length, data, data_length)) < 0) { + print(LOG_LEVEL, ERROR, 1, "ASN.1 decode error\n"); + return -1; + } + // check it + if (asn_data_length > (data_length - length_field_len)) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (asn_data_length < 1) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + // skip over the length field + data += length_field_len; + + // extract the information + uint8_t cmd_id = data[0]; + uint8_t *keycodes = data + 1; + + // tell the app + pthread_mutex_lock(&mmi->lock); + en50221_app_mmi_keypad_control_callback cb = mmi->keypadcontrolcallback; + void *cb_arg = mmi->keypadcontrolcallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number, cmd_id, + keycodes, asn_data_length - 1); + } + return 0; +} + +static int en50221_app_mmi_parse_enq(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, uint32_t data_length) +{ + // first of all, decode the length field + uint16_t asn_data_length; + int length_field_len; + if ((length_field_len = asn_1_decode(&asn_data_length, data, data_length)) < 0) { + print(LOG_LEVEL, ERROR, 1, "ASN.1 decode error\n"); + return -1; + } + // check it + if (asn_data_length > (data_length - length_field_len)) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (asn_data_length < 2) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + // skip over the length field + data += length_field_len; + + // extract the information + uint8_t blind_answer = (data[0] & 0x01) ? 1 : 0; + uint8_t answer_length = data[1]; + uint8_t *text = data + 2; + + // tell the app + pthread_mutex_lock(&mmi->lock); + en50221_app_mmi_enq_callback cb = mmi->enqcallback; + void *cb_arg = mmi->enqcallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number, blind_answer, + answer_length, text, asn_data_length - 2); + } + return 0; +} + +static int en50221_app_mmi_parse_list_menu(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint32_t tag_id, int more_last, + uint8_t * data, + uint32_t data_length) +{ + int result = 0; + uint8_t *text_flags = NULL; + struct en50221_app_mmi_text *text_data = NULL; + uint32_t i; + uint8_t text_count = 0; + + // first of all, decode the length field + uint16_t asn_data_length; + int length_field_len; + if ((length_field_len = asn_1_decode(&asn_data_length, data, data_length)) < 0) { + print(LOG_LEVEL, ERROR, 1, "ASN.1 decode error\n"); + return -1; + } + // check it + if (asn_data_length > (data_length - length_field_len)) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + // skip over the length field + data += length_field_len; + + // defragment + pthread_mutex_lock(&mmi->lock); + uint8_t *outdata; + uint32_t outdata_length; + int dfstatus = + en50221_app_mmi_defragment(mmi, session_number, tag_id, + more_last, + data, asn_data_length, + &outdata, &outdata_length); + if (dfstatus <= 0) { + pthread_mutex_unlock(&mmi->lock); + return dfstatus; + } + data = outdata; + data_length = outdata_length; + + // check the reassembled data length + if (data_length < 1) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + pthread_mutex_unlock(&mmi->lock); + result = -1; + goto exit_cleanup; + } + // now, parse the data + uint8_t choice_nb = data[0]; + text_count = choice_nb + 3; + if (choice_nb == 0xff) + text_count = 3; + data++; + data_length--; + + // variables for extracted text state + text_flags = alloca(text_count); + if (text_flags == NULL) { + pthread_mutex_unlock(&mmi->lock); + result = -1; + goto exit_cleanup; + } + memset(text_flags, 0, text_count); + text_data = (struct en50221_app_mmi_text *) + alloca(sizeof(struct en50221_app_mmi_text) * text_count); + if (text_data == NULL) { + pthread_mutex_unlock(&mmi->lock); + result = -1; + goto exit_cleanup; + } + memset(text_data, 0, + sizeof(struct en50221_app_mmi_text) * text_count); + + // extract the text! + for (i = 0; i < text_count; i++) { + uint32_t consumed = 0; + int cur_status = + en50221_app_mmi_defragment_text(data, data_length, + &text_data[i].text, + &text_data[i].text_length, + &consumed); + if (cur_status < 0) { + pthread_mutex_unlock(&mmi->lock); + result = -1; + goto exit_cleanup; + } + + text_flags[i] = cur_status; + data += consumed; + data_length -= consumed; + } + + // work out what to pass to the user + struct en50221_app_mmi_text *text_data_for_user = (struct en50221_app_mmi_text *) + alloca(sizeof(struct en50221_app_mmi_text) * text_count); + if (text_data_for_user == NULL) { + result = -1; + goto exit_cleanup; + } + memcpy(text_data_for_user, text_data, + sizeof(struct en50221_app_mmi_text) * text_count); + struct en50221_app_mmi_text *text_ptr = NULL; + if (text_count > 3) { + text_ptr = &text_data_for_user[3]; + } + uint8_t *items_raw = NULL; + uint32_t items_raw_length = 0; + if (choice_nb == 0xff) { + items_raw = data; + items_raw_length = data_length; + } + // do callback + result = 0; + switch (tag_id) { + case TAG_MENU_LAST: + { + en50221_app_mmi_menu_callback cb = mmi->menucallback; + void *cb_arg = mmi->menucallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + result = + cb(cb_arg, slot_id, session_number, + &text_data_for_user[0], + &text_data_for_user[1], + &text_data_for_user[2], + text_count - 3, text_ptr, + items_raw_length, items_raw); + } + break; + } + + case TAG_LIST_LAST: + { + en50221_app_mmi_list_callback cb = mmi->listcallback; + void *cb_arg = mmi->listcallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + result = + cb(cb_arg, slot_id, session_number, + &text_data_for_user[0], + &text_data_for_user[1], + &text_data_for_user[2], + text_count - 3, text_ptr, + items_raw_length, items_raw); + } + break; + } + + default: + pthread_mutex_unlock(&mmi->lock); + break; + } + +exit_cleanup: + if ((dfstatus == 2) && outdata) + free(outdata); + if (text_flags && text_data) { + for (i = 0; i < text_count; i++) { + if ((text_flags[i] == 2) && text_data[i].text) { + free(text_data[i].text); + } + } + } + return result; +} + +static int en50221_app_mmi_parse_subtitle(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint32_t tag_id, int more_last, + uint8_t * data, + uint32_t data_length) +{ + // first of all, decode the length field + uint16_t asn_data_length; + int length_field_len; + if ((length_field_len = asn_1_decode(&asn_data_length, data, data_length)) < 0) { + print(LOG_LEVEL, ERROR, 1, "ASN.1 decode error\n"); + return -1; + } + // check it + if (asn_data_length > (data_length - length_field_len)) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + // skip over the length field + data += length_field_len; + + // defragment + pthread_mutex_lock(&mmi->lock); + uint8_t *outdata; + uint32_t outdata_length; + int dfstatus = + en50221_app_mmi_defragment(mmi, session_number, tag_id, + more_last, + data, asn_data_length, + &outdata, &outdata_length); + if (dfstatus <= 0) { + pthread_mutex_unlock(&mmi->lock); + return dfstatus; + } + // do callback + int cbstatus = 0; + switch (tag_id) { + case TAG_SUBTITLE_SEGMENT_LAST: + { + en50221_app_mmi_subtitle_segment_callback cb = + mmi->subtitlesegmentcallback; + void *cb_arg = mmi->subtitlesegmentcallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + cbstatus = + cb(cb_arg, slot_id, session_number, outdata, outdata_length); + } + break; + } + + case TAG_SUBTITLE_DOWNLOAD_LAST: + { + en50221_app_mmi_subtitle_download_callback cb = + mmi->subtitledownloadcallback; + void *cb_arg = mmi->subtitledownloadcallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + cbstatus = + cb(cb_arg, slot_id, session_number, outdata, outdata_length); + } + break; + } + } + + // free the data returned by the defragment call if asked to + if (dfstatus == 2) { + free(outdata); + } + // done + return cbstatus; +} + +static int en50221_app_mmi_parse_scene_end_mark(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length) +{ + // validate data + if (data_length != 2) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (data[0] != 1) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + uint8_t flags = data[1]; + + // tell the app + pthread_mutex_lock(&mmi->lock); + en50221_app_mmi_scene_end_mark_callback cb = + mmi->sceneendmarkcallback; + void *cb_arg = mmi->sceneendmarkcallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number, + (flags & 0x80) ? 1 : 0, + (flags & 0x40) ? 1 : 0, + (flags & 0x20) ? 1 : 0, flags & 0x0f); + } + return 0; +} + +static int en50221_app_mmi_parse_scene_control(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t * data, + uint32_t data_length) +{ + // validate data + if (data_length != 2) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (data[0] != 1) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + uint8_t flags = data[1]; + + // tell the app + pthread_mutex_lock(&mmi->lock); + en50221_app_mmi_scene_control_callback cb = mmi->scenecontrolcallback; + void *cb_arg = mmi->scenecontrolcallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number, + (flags & 0x80) ? 1 : 0, + (flags & 0x40) ? 1 : 0, flags & 0x0f); + } + return 0; +} + +static int en50221_app_mmi_parse_flush_download(struct en50221_app_mmi *mmi, + uint8_t slot_id, + uint16_t session_number, + uint8_t *data, + uint32_t data_length) +{ + // validate data + if (data_length != 1) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + if (data[0] != 0) { + print(LOG_LEVEL, ERROR, 1, "Received short data\n"); + return -1; + } + // tell the app + pthread_mutex_lock(&mmi->lock); + en50221_app_mmi_flush_download_callback cb = mmi->flushdownloadcallback; + void *cb_arg = mmi->flushdownloadcallback_arg; + pthread_mutex_unlock(&mmi->lock); + if (cb) { + return cb(cb_arg, slot_id, session_number); + } + return 0; +} + +static int en50221_app_mmi_defragment(struct en50221_app_mmi *mmi, + uint16_t session_number, + uint32_t tag_id, + int more_last, + uint8_t * indata, + uint32_t indata_length, + uint8_t ** outdata, + uint32_t * outdata_length) +{ + struct en50221_app_mmi_session *cur_s = mmi->sessions; + while (cur_s) { + if (cur_s->session_number == session_number) + break; + cur_s = cur_s->next; + } + + // more data is still to come + if (!more_last) { + // if there was no previous session, create one + if (cur_s == NULL) { + cur_s = malloc(sizeof(struct en50221_app_mmi_session)); + if (cur_s == NULL) { + print(LOG_LEVEL, ERROR, 1, "Ran out of memory\n"); + return -1; + } + cur_s->session_number = session_number; + cur_s->menu_block_chain = NULL; + cur_s->menu_block_length = 0; + cur_s->list_block_chain = NULL; + cur_s->list_block_length = 0; + cur_s->subtitlesegment_block_chain = NULL; + cur_s->subtitlesegment_block_length = 0; + cur_s->subtitledownload_block_chain = NULL; + cur_s->subtitledownload_block_length = 0; + cur_s->next = mmi->sessions; + mmi->sessions = cur_s; + } + // find the block/block_length to use + uint8_t **block_chain; + uint32_t *block_length; + switch (tag_id) { + case TAG_MENU_LAST: + case TAG_MENU_MORE: + block_chain = &cur_s->menu_block_chain; + block_length = &cur_s->menu_block_length; + break; + case TAG_LIST_LAST: + case TAG_LIST_MORE: + block_chain = &cur_s->list_block_chain; + block_length = &cur_s->list_block_length; + break; + case TAG_SUBTITLE_SEGMENT_LAST: + case TAG_SUBTITLE_SEGMENT_MORE: + block_chain = &cur_s->subtitlesegment_block_chain; + block_length = &cur_s->subtitlesegment_block_length; + break; + case TAG_SUBTITLE_DOWNLOAD_LAST: + case TAG_SUBTITLE_DOWNLOAD_MORE: + block_chain = &cur_s->subtitledownload_block_chain; + block_length = &cur_s->subtitledownload_block_length; + break; + default: + return -1; + } + + // append the data + uint8_t *new_data = + realloc(*block_chain, *block_length + indata_length); + if (new_data == NULL) { + print(LOG_LEVEL, ERROR, 1, "Ran out of memory\n"); + return -1; + } + memcpy(new_data + *block_length, indata, indata_length); + *block_chain = new_data; + *block_length += indata_length; + + // success, but block not complete yet + return 0; + } + // we hit the last of a possible chain of fragments + if (cur_s != NULL) { + // find the block/block_length to use + uint8_t **block_chain; + uint32_t *block_length; + switch (tag_id) { + case TAG_MENU_LAST: + case TAG_MENU_MORE: + block_chain = &cur_s->menu_block_chain; + block_length = &cur_s->menu_block_length; + break; + case TAG_LIST_LAST: + case TAG_LIST_MORE: + block_chain = &cur_s->list_block_chain; + block_length = &cur_s->list_block_length; + break; + case TAG_SUBTITLE_SEGMENT_LAST: + case TAG_SUBTITLE_SEGMENT_MORE: + block_chain = &cur_s->subtitlesegment_block_chain; + block_length = &cur_s->subtitlesegment_block_length; + break; + case TAG_SUBTITLE_DOWNLOAD_LAST: + case TAG_SUBTITLE_DOWNLOAD_MORE: + block_chain = &cur_s->subtitledownload_block_chain; + block_length = &cur_s->subtitledownload_block_length; + break; + default: + return -1; + } + + // we have a preceding fragment - need to append + uint8_t *new_data = + realloc(*block_chain, *block_length + indata_length); + if (new_data == NULL) { + print(LOG_LEVEL, ERROR, 1, "Ran out of memory\n"); + return -1; + } + memcpy(new_data + *block_length, indata, indata_length); + *outdata_length = *block_length + indata_length; + *outdata = new_data; + *block_chain = NULL; + *block_length = 0; + + // success, and indicate to free the block when done + return 2; + } + // success, but indicate it is not to be freed + *outdata_length = indata_length; + *outdata = indata; + return 1; +} + +static int en50221_app_mmi_defragment_text(uint8_t * data, + uint32_t data_length, + uint8_t ** outdata, + uint32_t * outdata_length, + uint32_t * outconsumed) +{ + uint8_t *text = NULL; + uint32_t text_length = 0; + uint32_t consumed = 0; + + while (1) { + // get the tag + if (data_length < 3) { + print(LOG_LEVEL, ERROR, 1, "Short data\n"); + if (text) + free(text); + return -1; + } + uint32_t tag = (data[0] << 16) | (data[1] << 8) | data[2]; + data += 3; + data_length -= 3; + consumed += 3; + + // get the length of the data and adjust + uint16_t asn_data_length; + int length_field_len; + if ((length_field_len = + asn_1_decode(&asn_data_length, data, + data_length)) < 0) { + print(LOG_LEVEL, ERROR, 1, "ASN.1 decode error\n"); + if (text) + free(text); + return -1; + } + data += length_field_len; + data_length -= length_field_len; + consumed += length_field_len; + + // deal with the tags + if (tag == TAG_TEXT_LAST) { + if (text == NULL) { + *outdata = data; + *outdata_length = asn_data_length; + *outconsumed = consumed + asn_data_length; + return 1; + } else { + // append the data + uint8_t *new_text = realloc(text, + text_length + asn_data_length); + if (new_text == NULL) { + print(LOG_LEVEL, ERROR, 1, + "Ran out of memory\n"); + if (text) + free(text); + return -1; + } + memcpy(new_text + text_length, data, + asn_data_length); + *outdata = new_text; + *outdata_length = + text_length + asn_data_length; + *outconsumed = consumed + asn_data_length; + return 2; + } + + } else if (tag == TAG_TEXT_MORE) { + // append the data + uint8_t *new_text = + realloc(text, text_length + asn_data_length); + if (new_text == NULL) { + print(LOG_LEVEL, ERROR, 1, + "Ran out of memory\n"); + if (text) + free(text); + return -1; + } + memcpy(new_text + text_length, data, + asn_data_length); + text = new_text; + text_length += asn_data_length; + + // consume the data + data += asn_data_length; + data_length -= asn_data_length; + consumed += asn_data_length; + } else { + // unknown tag + print(LOG_LEVEL, ERROR, 1, + "Unknown MMI text tag\n"); + if (text) + free(text); + return -1; + } + } +} |