Am Donnerstag, den 18.06.2009, 20:39 -0500 schrieb Yufei Yuan:
> This one is about the utility itself. I do apologize for the length
> here as "inline" patch is preferred according to the guide and I don't
> have any public online storage. Please let me know if this causes any
> inconvenience.
>
> Signed-off-by: Yufei Yuan <yfy...@gmail.com>
>
> diff -uprN dvb-apps/util/atsc_epg/atsc_epg.c
> dvb-apps_new/util/atsc_epg/atsc_epg.c
> --- dvb-apps/util/atsc_epg/atsc_epg.c 1969-12-31 18:00:00.000000000
> -0600
> +++ dvb-apps_new/util/atsc_epg/atsc_epg.c 2009-06-18
> 20:17:24.527925142 -0500
> @@ -0,0 +1,1249 @@
> +/*
> + * atsc_epg utility
> + *
> + * Copyright (C) 2009 Yufei Yuan <yfy...@gmail.com>
> + * 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
> + * (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.
> + *
> + * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
> + */
> +
> +#include <stdio.h>
> +#include <stdlib.h>
> +#include <unistd.h>
> +#include <string.h>
> +#include <time.h>
> +#include <signal.h>
> +#include <sys/types.h>
> +#include <sys/stat.h>
> +#include <fcntl.h>
> +#include <sys/ioctl.h>
> +#include <sys/poll.h>
> +#include <errno.h>
> +#include <getopt.h>
> +#include <stdarg.h>
> +#include <libdvbapi/dvbfe.h>
> +#include <libdvbapi/dvbdemux.h>
> +#include <libucsi/dvb/section.h>
> +#include <libucsi/atsc/section.h>
> +#include <libucsi/atsc/types.h>
> +
> +#define TIMEOUT 60
> +#define RRT_TIMEOUT 60
> +#define MAX_NUM_EVENT_TABLES 128
> +#define TITLE_BUFFER_LEN 4096
> +#define MESSAGE_BUFFER_LEN (16 * 1024)
> +#define MAX_NUM_CHANNELS 16
> +#define MAX_NUM_EVENTS_PER_CHANNEL (4 * 24 * 7)
> +
> +static int atsc_scan_table(int dmxfd, uint16_t pid, enum
> atsc_section_tag tag,
> + void **table_section);
> +
> +static const char *program;
> +static int adapter = 0;
> +static int period = 12; /* hours */
> +static int frequency;
> +static int enable_ett = 0;
> +static int ctrl_c = 0;
> +static const char *modulation = NULL;
> +static char separator[80];
> +void (*old_handler)(int);
> +
> +struct atsc_string_buffer {
> + int buf_len;
> + int buf_pos;
> + char *string;
> +};
> +
> +struct atsc_event_info {
> + uint16_t id;
> + struct tm start;
> + struct tm end;
> + int title_pos;
> + int title_len;
> + int msg_pos;
> + int msg_len;
> +};
> +
> +struct atsc_eit_section_info {
> + uint8_t section_num;
> + uint8_t num_events;
> + uint8_t num_etms;
> + uint8_t num_received_etms;
> + struct atsc_event_info **events;
> +};
> +
> +struct atsc_eit_info {
> + int num_eit_sections;
> + struct atsc_eit_section_info *section;
> +};
> +
> +struct atsc_channel_info {
> + uint8_t num_eits;
> + uint8_t service_type;
> + char short_name[8];
> + uint16_t major_num;
> + uint16_t minor_num;
> + uint16_t tsid;
> + uint16_t prog_num;
> + uint16_t src_id;
> + struct atsc_eit_info *eit;
> + struct atsc_event_info *last_event;
> + int event_info_index;
> + struct atsc_event_info e[MAX_NUM_EVENTS_PER_CHANNEL];
> + struct atsc_string_buffer title_buf;
> + struct atsc_string_buffer msg_buf;
> +};
> +
> +struct atsc_virtual_channels_info {
> + int num_channels;
> + uint16_t eit_pid[MAX_NUM_EVENT_TABLES];
> + uint16_t ett_pid[MAX_NUM_EVENT_TABLES];
> + struct atsc_channel_info ch[MAX_NUM_CHANNELS];
> +} guide;
> +
> +struct mgt_table_name {
> + uint16_t range;
> + const char *string;
> +};
> +
> +struct mgt_table_name mgt_tab_name_array[] = {
> + {0x0000, "terrestrial VCT with current_next_indictor=1"},
> + {0x0001, "terrestrial VCT with current_next_indictor=0"},
> + {0x0002, "cable VCT with current_next_indictor=1"},
> + {0x0003, "cable VCT with current_next_indictor=0"},
> + {0x0004, "channel ETT"},
> + {0x0005, "DCCSCT"},
> + {0x00FF, "reserved for future ATSC use"},
> + {0x017F, "EIT"},
> + {0x01FF, "reserved for future ATSC use"},
> + {0x027F, "event ETT"},
> + {0x02FF, "reserved for future ATSC use"}, /* FIXME */
> + {0x03FF, "RRT with rating region"},
> + {0x0FFF, "user private"},
> + {0x13FF, "reserved for future ATSC use"},
> + {0x14FF, "DCCT with dcc_id"},
> + {0xFFFF, "reserved for future ATSC use"}
> +};
> +
> +const char *channel_modulation_mode[] = {
> + "",
> + "analog",
> + "SCTE mode 1",
> + "SCTE mode 2",
> + "ATSC 8VSB",
> + "ATSC 16VSB"
> +};
> +
> +const char *channel_service_type[] = {
> + "",
> + "analog TV",
> + "ATSC digital TV",
> + "ATSC audio",
> + "ATSC data-only"
> +};
> +
> +void *(*table_callback[16])(struct atsc_section_psip *) =
> +{
> + NULL, NULL, NULL, NULL, NULL, NULL, NULL,
> + (void *(*)(struct atsc_section_psip *))atsc_mgt_section_codec,
> + (void *(*)(struct atsc_section_psip
> *))atsc_tvct_section_codec,
> + (void *(*)(struct atsc_section_psip
> *))atsc_cvct_section_codec,
> + (void *(*)(struct atsc_section_psip *))atsc_rrt_section_codec,
> + (void *(*)(struct atsc_section_psip *))atsc_eit_section_codec,
> + (void *(*)(struct atsc_section_psip *))atsc_ett_section_codec,
> + (void *(*)(struct atsc_section_psip *))atsc_stt_section_codec,
> + NULL, NULL
> +};
> +
> +static void int_handler(int sig_num)
> +{
> + if(SIGINT != sig_num) {
> + return;
> + }
> + ctrl_c = 1;
> +}
> +
> +/* shamelessly stolen from dvbsnoop, but almost not modified */
> +static uint32_t get_bits(const uint8_t *buf, int startbit, int
> bitlen)
> +{
> + const uint8_t *b;
> + uint32_t mask,tmp_long;
> + int bitHigh,i;
> +
> + b = &buf[startbit / 8];
> + startbit %= 8;
> +
> + bitHigh = 8;
> + tmp_long = b[0];
> + for (i = 0; i < ((bitlen-1) >> 3); i++) {
> + tmp_long <<= 8;
> + tmp_long |= b[i+1];
> + bitHigh += 8;
> + }
> +
> + startbit = bitHigh - startbit - bitlen;
> + tmp_long = tmp_long >> startbit;
> + mask = (1ULL << bitlen) - 1;
> + return tmp_long & mask;
> +}
> +
> +static void usage(void)
> +{
> + fprintf(stderr, "usage: %s [-a <n>] -f <frequency> [-p
> <period>]"
> + " [-m <modulation>] [-t] [-h]\n", program);
> +}
> +
> +static void help(void)
> +{
> + fprintf(stderr,
> + "\nhelp:\n"
> + "%s [-a <n>] -f <frequency> [-p <period>] [-m <modulation>]
> [-t] [-h]\n"
> + " -a: adapter index to use, (default 0)\n"
> + " -f: tuning frequency\n"
> + " -p: period in hours, (default 12)\n"
> + " -m: modulation ATSC vsb_8|vsb_16 (default vsb_8)\n"
> + " -t: enable ETT to receive program details, if available\n"
> + " -h: display this message\n", program);
> +}
> +
> +static int close_frontend(struct dvbfe_handle *fe)
> +{
> + if(NULL == fe) {
> + fprintf(stderr, "%s(): NULL pointer detected\n",
> __FUNCTION__);
> + }
> +
> + dvbfe_close(fe);
> +
> + return 0;
> +}
> +
> +static int open_frontend(struct dvbfe_handle **fe)
> +{
> + struct dvbfe_info fe_info;
> +
> + if(NULL == (*fe = dvbfe_open(adapter, 0, 0))) {
> + fprintf(stderr, "%s(): error calling dvbfe_open()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + dvbfe_get_info(*fe, 0, &fe_info,
> DVBFE_INFO_QUERYTYPE_IMMEDIATE, 0);
> + if(DVBFE_TYPE_ATSC != fe_info.type) {
> + fprintf(stderr, "%s(): only ATSC frontend supported
> currently\n",
> + __FUNCTION__);
> + return -1;
> + }
> + fe_info.feparams.frequency = frequency;
> + fe_info.feparams.inversion = DVBFE_INVERSION_AUTO;
> + fe_info.feparams.u.atsc.modulation = DVBFE_ATSC_MOD_VSB_8;
> + fprintf(stdout, "tuning to %d Hz, please wait...\n",
> frequency);
> + if(dvbfe_set(*fe, &fe_info.feparams, TIMEOUT * 1000)) {
> + fprintf(stderr, "%s(): cannot lock to %d Hz in %d
> seconds\n",
> + __FUNCTION__, frequency, TIMEOUT);
> + return -1;
> + }
> + fprintf(stdout, "tuner locked.\n");
> +
> + return 0;
> +}
> +
> +#if ENABLE_RRT
> +/* this is untested as since this part of the library is broken */
> +static int parse_rrt(int dmxfd)
> +{
> + const enum atsc_section_tag tag = stag_atsc_rating_region;
> + struct atsc_rrt_section *rrt;
> + struct atsc_text *region_name;
> + struct atsc_text_string *atsc_str;
> + int i, j, ret;
> +
> + i = 0;
> + fprintf(stdout, "waiting for RRT: ");
> + fflush(stdout);
> + while(i < RRT_TIMEOUT) {
> + ret = atsc_scan_table(dmxfd, ATSC_BASE_PID, tag, (void
> **)&rrt);
> + if(0 > ret) {
> + fprintf(stderr, "%s(): error calling
> atsc_scan_table()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + if(0 == ret) {
> + if(RRT_TIMEOUT > i) {
> + fprintf(stdout, ".");
> + fflush(stdout);
> + } else {
> + fprintf(stdout, "\nno RRT in %d
> seconds\n",
> + RRT_TIMEOUT);
> + return 0;
> + }
> + i += TIMEOUT;
> + } else {
> + fprintf(stdout, "\n");
> + fflush(stdout);
> + break;
> + }
> + }
> +
> + region_name = atsc_rrt_section_rating_region_name_text(rrt);
> + atsc_text_strings_for_each(region_name, atsc_str, i) {
> + struct atsc_text_string_segment *seg;
> +
> + atsc_text_string_segments_for_each(atsc_str, seg, j) {
> + const char *c;
> + int k;
> + if(seg->mode < 0x3E) {
> + fprintf(stderr, "%s(): text mode of
> 0x%02X "
> + "not supported yet\n",
> + __FUNCTION__, seg->mode);
> + return -1;
> + }
> + c = (const char
> *)atsc_text_string_segment_bytes(seg);
> + for(k = 0; k < seg->number_bytes; k++) {
> + fprintf(stdout, "%c", c[k]);
> + }
> + }
> + }
> +
> + return 0;
> +}
> +#endif
> +
> +static int parse_stt(int dmxfd)
> +{
> + const enum atsc_section_tag tag = stag_atsc_system_time;
> + const struct atsc_stt_section *stt;
> + time_t rx_time;
> + time_t sys_time;
> + int ret;
> +
> + ret = atsc_scan_table(dmxfd, ATSC_BASE_PID, tag, (void
> **)&stt);
> + if(0 > ret) {
> + fprintf(stderr, "%s(): error calling
> atsc_scan_table()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + if(0 == ret) {
> + fprintf(stdout, "no STT in %d seconds\n", TIMEOUT);
> + return 0;
> + }
> +
> + rx_time = atsctime_to_unixtime(stt->system_time);
> + time(&sys_time);
> + fprintf(stdout, "system time: %s", ctime(&sys_time));
> + fprintf(stdout, "TS STT time: %s", ctime(&rx_time));
> +
> + return 0;
> +}
> +
> +static int parse_tvct(int dmxfd)
> +{
> + int num_sections;
> + uint32_t section_pattern;
> + const enum atsc_section_tag tag =
> stag_atsc_terrestrial_virtual_channel;
> + struct atsc_tvct_section *tvct;
> + struct atsc_tvct_channel *ch;
> + struct atsc_channel_info *curr_info;
> + int i, k, ret;
> +
> + section_pattern = 0;
> + num_sections = -1;
> +
> + do {
> + ret = atsc_scan_table(dmxfd, ATSC_BASE_PID, tag, (void
> **)&tvct);
> + if(0 > ret) {
> + fprintf(stderr, "%s(): error calling
> atsc_scan_table()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + if(0 == ret) {
> + fprintf(stdout, "no TVCT in %d seconds\n",
> TIMEOUT);
> + return 0;
> + }
> +
> + if(-1 == num_sections) {
> + num_sections = 1 +
> tvct->head.ext_head.last_section_number;
> + if(32 < num_sections) {
> + fprintf(stderr, "%s(): no support yet
> for "
> + "tables having more than 32
> sections\n",
> + __FUNCTION__);
> + return -1;
> + }
> + } else {
> + if(num_sections !=
> + 1 +
> tvct->head.ext_head.last_section_number) {
> + fprintf(stderr,
> + "%s(): last section number
> does not match\n",
> + __FUNCTION__);
> + return -1;
> + }
> + }
> + if(section_pattern & (1 <<
> tvct->head.ext_head.section_number)) {
> + continue;
> + }
> + section_pattern |= 1 <<
> tvct->head.ext_head.section_number;
> +
> + if(MAX_NUM_CHANNELS < guide.num_channels +
> + tvct->num_channels_in_section) {
> + fprintf(stderr, "%s(): no support for more
> than %d "
> + "virtual channels in a pyhsical
> channel\n",
> + __FUNCTION__, MAX_NUM_CHANNELS);
> + return -1;
> + }
> + curr_info = &guide.ch[guide.num_channels];
> + guide.num_channels += tvct->num_channels_in_section;
> +
> + atsc_tvct_section_channels_for_each(tvct, ch, i) {
> + /* initialize the curr_info structure */
> + /* each EIT covers 3 hours */
> + curr_info->num_eits = (period / 3) + !!(period % 3);
> + while (curr_info->num_eits &&
> + (0xFFFF == guide.eit_pid[curr_info->num_eits -
> 1])) {
> + curr_info->num_eits -= 1;
> + }
> + if(curr_info->eit) {
> + fprintf(stderr, "%s(): non-NULL pointer
> detected "
> + "during initialization",
> __FUNCTION__);
> + return -1;
> + }
> + if(NULL == (curr_info->eit =
> calloc(curr_info->num_eits,
> + sizeof(struct atsc_eit_info)))) {
> + fprintf(stderr, "%s(): error calling
> calloc()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + if(NULL == (curr_info->title_buf.string =
> calloc(TITLE_BUFFER_LEN,
> + sizeof(char)))) {
> + fprintf(stderr, "%s(): error calling
> calloc()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + curr_info->title_buf.buf_len = TITLE_BUFFER_LEN;
> + curr_info->title_buf.buf_pos = 0;
> +
> + if(NULL == (curr_info->msg_buf.string =
> calloc(MESSAGE_BUFFER_LEN,
> + sizeof(char)))) {
> + fprintf(stderr, "%s(): error calling
> calloc()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + curr_info->msg_buf.buf_len = MESSAGE_BUFFER_LEN;
> + curr_info->msg_buf.buf_pos = 0;
> +
> + for(k = 0; k < 7; k++) {
> + curr_info->short_name[k] =
> + get_bits((const uint8_t
> *)ch->short_name,
> + k * 16, 16);
> + }
> + curr_info->service_type = ch->service_type;
> + curr_info->major_num = ch->major_channel_number;
> + curr_info->minor_num = ch->minor_channel_number;
> + curr_info->tsid = ch->channel_TSID;
> + curr_info->prog_num = ch->program_number;
> + curr_info->src_id = ch->source_id;
> + curr_info++;
> + }
> + } while(section_pattern != (uint32_t)((1 << num_sections) -
> 1));
> +
> + return 0;
> +}
> +
> +static int match_event(struct atsc_eit_info *eit, uint16_t event_id,
> + struct atsc_event_info **event, uint8_t *curr_index)
> +{
> + int j, k;
> + struct atsc_eit_section_info *section;
> +
> + if(NULL == eit || NULL == event || NULL == curr_index) {
> + fprintf(stderr, "%s(): NULL pointer detected\n",
> __FUNCTION__);
> + return -1;
> + }
> +
> + for(j = 0; j < eit->num_eit_sections; j++) {
> + section = &eit->section[j];
> +
> + for(k = 0; k < section->num_events; k++) {
> + if(section->events[k] &&
> section->events[k]->id ==
> + event_id) {
> + *event = section->events[k];
> + break;
> + }
> + }
> + if(*event) {
> + *curr_index = j;
> + break;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int parse_message(struct atsc_channel_info *channel,
> + struct atsc_ett_section *ett, struct atsc_event_info *event)
> +{
> + int i, j;
> + struct atsc_text *text;
> + struct atsc_text_string *str;
> +
> + if(NULL == ett || NULL == event || NULL == channel) {
> + fprintf(stderr, "%s(): NULL pointer detected\n",
> __FUNCTION__);
> + return -1;
> + }
> +
> + text = atsc_ett_section_extended_text_message(ett);
> + atsc_text_strings_for_each(text, str, i) {
> + struct atsc_text_string_segment *seg;
> +
> + atsc_text_string_segments_for_each(str, seg, j) {
> + event->msg_pos = channel->msg_buf.buf_pos;
> + if(0 > atsc_text_segment_decode(seg,
> + (uint8_t **)&channel->msg_buf.string,
> + (size_t *)&channel->msg_buf.buf_len,
> + (size_t *)&channel->msg_buf.buf_pos))
> {
> + fprintf(stderr, "%s(): error calling "
> +
> "atsc_text_segment_decode()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + event->msg_len = 1 + channel->msg_buf.buf_pos
> -
> + event->msg_pos;
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int parse_ett(int dmxfd, int index, uint16_t pid)
> +{
> + uint8_t curr_index;
> + uint32_t section_pattern;
> + const enum atsc_section_tag tag = stag_atsc_extended_text;
> + struct atsc_eit_info *eit;
> + struct atsc_ett_section *ett;
> + struct atsc_channel_info *channel;
> + struct atsc_event_info *event;
> + struct atsc_eit_section_info *section;
> + uint16_t source_id, event_id;
> + int c, ret;
> +
> + if(0xFFFF == guide.ett_pid[index]) {
> + return 0;
> + }
> +
> + for(c = 0; c < guide.num_channels; c++) {
> + channel = &guide.ch[c];
> + eit = &channel->eit[index];
> +
> + section_pattern = 0;
> + while(section_pattern !=
> + (uint32_t)((1 << eit->num_eit_sections) - 1))
> {
> + if(ctrl_c) {
> + return 0;
> + }
> + ret = atsc_scan_table(dmxfd, pid, tag, (void
> **)&ett);
> + fprintf(stdout, ".");
> + fflush(stdout);
> + if(0 > ret) {
> + fprintf(stderr, "%s(): error calling "
> + "atsc_scan_table()\n",
> __FUNCTION__);
> + return -1;
> + }
> + if(0 == ret) {
> + fprintf(stdout, "no ETT %d in %d
> seconds\n",
> + index, TIMEOUT);
> + return 0;
> + }
> +
> + source_id = ett->ETM_source_id;
> + event_id = ett->ETM_sub_id;
> + if(source_id != channel->src_id) {
> + continue;
> + }
> +
> + event = NULL;
> + if(match_event(eit, event_id, &event,
> &curr_index)) {
> + fprintf(stderr, "%s(): error calling "
> + "match_event()\n",
> __FUNCTION__);
> + return -1;
> + }
> + if(NULL == event) {
> + continue;
> + }
> + if(section_pattern & (1 << curr_index)) {
> + /* the section has been filled, so
> skip,
> + * not consider version yet
> + */
> + continue;
> + }
> + if(event->msg_len) {
> + /* the message has been filled */
> + continue;
> + }
> +
> + if(parse_message(channel, ett, event)) {
> + fprintf(stderr, "%s(): error calling "
> + "parse_message()\n",
> __FUNCTION__);
> + return -1;
> + }
> + section = &eit->section[curr_index];
> + if(++section->num_received_etms ==
> section->num_etms) {
> + section_pattern |= 1 << curr_index;
> + }
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int parse_events(struct atsc_channel_info *curr_info,
> + struct atsc_eit_section *eit, struct atsc_eit_section_info
> *section)
> +{
> + int i, j, k;
> + struct atsc_eit_event *e;
> + time_t start_time, end_time;
> +
> + if(NULL == curr_info || NULL == eit) {
> + fprintf(stderr, "%s(): NULL pointer detected\n",
> __FUNCTION__);
> + return -1;
> + }
> +
> + atsc_eit_section_events_for_each(eit, e, i) {
> + struct atsc_text *title;
> + struct atsc_text_string *str;
> + struct atsc_event_info *e_info =
> + &curr_info->e[curr_info->event_info_index];
> +
> + if(0 == i && curr_info->last_event) {
> + if(e->event_id == curr_info->last_event->id) {
> + section->events[i] = NULL;
> + /* skip if it's the same event
> spanning
> + * over sections
> + */
> + continue;
> + }
> + }
> + curr_info->event_info_index += 1;
> + section->events[i] = e_info;
> + e_info->id = e->event_id;
> + start_time = atsctime_to_unixtime(e->start_time);
> + end_time = start_time + e->length_in_seconds;
> + localtime_r(&start_time, &e_info->start);
> + localtime_r(&end_time, &e_info->end);
> + if(0 != e->ETM_location && 3 != e->ETM_location) {
> + /* FIXME assume 1 and 2 is interchangable as
> of now */
> + section->num_etms++;
> + }
> +
> + title = atsc_eit_event_name_title_text(e);
> + atsc_text_strings_for_each(title, str, j) {
> + struct atsc_text_string_segment *seg;
> +
> + atsc_text_string_segments_for_each(str, seg,
> k) {
> + e_info->title_pos =
> curr_info->title_buf.buf_pos;
> + if(0 > atsc_text_segment_decode(seg,
> + (uint8_t
> **)&curr_info->title_buf.string,
> + (size_t
> *)&curr_info->title_buf.buf_len,
> + (size_t
> *)&curr_info->title_buf.buf_pos)) {
> + fprintf(stderr, "%s(): error
> calling "
> +
> "atsc_text_segment_decode()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + e_info->title_len =
> curr_info->title_buf.buf_pos -
> + e_info->title_pos + 1;
> + }
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int parse_eit(int dmxfd, int index, uint16_t pid)
> +{
> + int num_sections;
> + uint8_t section_num;
> + uint8_t curr_channel_index;
> + uint32_t section_pattern;
> + const enum atsc_section_tag tag = stag_atsc_event_information;
> + struct atsc_eit_section *eit;
> + struct atsc_channel_info *curr_info;
> + struct atsc_eit_info *eit_info;
> + struct atsc_eit_section_info *section;
> + uint16_t source_id;
> + uint32_t eit_instance_pattern = 0;
> + int i, k, ret;
> +
> + while(eit_instance_pattern !=
> + (uint32_t)((1 << guide.num_channels) - 1)) {
> + source_id = 0xFFFF;
> + section_pattern = 0;
> + num_sections = -1;
> +
> + do {
> + ret = atsc_scan_table(dmxfd, pid, tag, (void
> **)&eit);
> + fprintf(stdout, ".");
> + fflush(stdout);
> + if(0 > ret) {
> + fprintf(stderr, "%s(): error calling "
> + "atsc_scan_table()\n",
> __FUNCTION__);
> + return -1;
> + }
> + if(0 == ret) {
> + fprintf(stdout, "no EIT %d in %d
> seconds\n",
> + index, TIMEOUT);
> + return 0;
> + }
> +
> + if(0xFFFF == source_id) {
> + source_id = atsc_eit_section_source_id(eit);
> + for(k = 0; k < guide.num_channels; k++) {
> + if(source_id == guide.ch[k].src_id) {
> + curr_info = &guide.ch[k];
> + curr_channel_index = k;
> + if(0 == index) {
> + curr_info->last_event
> = NULL;
> + }
> + break;
> + }
> + }
> + if(k == guide.num_channels) {
> + fprintf(stderr, "%s(): cannot find
> source_id "
> + "0x%04X in the EIT\n",
> + __FUNCTION__, source_id);
> + return -1;
> + }
> + } else {
> + if(source_id !=
> +
> atsc_eit_section_source_id(eit)) {
> + continue;
> + }
> + }
> + if(eit_instance_pattern & (1 <<
> curr_channel_index)) {
> + /* we have received this instance,
> + * so quit quick
> + */
> + break;
> + }
> +
> + if(-1 == num_sections) {
> + num_sections = 1 +
> +
> eit->head.ext_head.last_section_number;
> + if(32 < num_sections) {
> + fprintf(stderr,
> + "%s(): no support yet
> for "
> + "tables having more
> than "
> + "32 sections\n",
> __FUNCTION__);
> + return -1;
> + }
> + } else {
> + if(num_sections != 1 +
> +
> eit->head.ext_head.last_section_number) {
> + fprintf(stderr,
> + "%s(): last section
> number "
> + "does not match\n",
> + __FUNCTION__);
> + return -1;
> + }
> + }
> + if(section_pattern &
> + (1 <<
> eit->head.ext_head.section_number)) {
> + continue;
> + }
> + section_pattern |= 1 <<
> eit->head.ext_head.section_number;
> +
> + eit_info = &curr_info->eit[index];
> + if(NULL == (eit_info->section =
> + realloc(eit_info->section,
> + (eit_info->num_eit_sections + 1) *
> + sizeof(struct
> atsc_eit_section_info)))) {
> + fprintf(stderr,
> + "%s(): error calling
> realloc()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + section_num =
> eit->head.ext_head.section_number;
> + if(0 == eit_info->num_eit_sections) {
> + eit_info->num_eit_sections = 1;
> + section = eit_info->section;
> + } else {
> + /* have to sort it into section order
> + * (temporal order)
> + */
> + for(i = 0; i <
> eit_info->num_eit_sections; i++) {
> +
> if(eit_info->section[i].section_num >
> + section_num) {
> + break;
> + }
> + }
> + memmove(&eit_info->section[i + 1],
> + &eit_info->section[i],
> + (eit_info->num_eit_sections -
> i) *
> + sizeof(struct
> atsc_eit_section_info));
> + section = &eit_info->section[i - 1];
> + section = &eit_info->section[i];
> + eit_info->num_eit_sections += 1;
> + }
> +
> + section->section_num = section_num;
> + section->num_events =
> eit->num_events_in_section;
> + section->num_etms = 0;
> + section->num_received_etms = 0;
> + if(NULL == (section->events =
> calloc(section->num_events,
> + sizeof(struct atsc_event_info *)))) {
> + fprintf(stderr, "%s(): error calling
> calloc()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + if(parse_events(curr_info, eit, section)) {
> + fprintf(stderr, "%s(): error calling "
> + "parse_events()\n",
> __FUNCTION__);
> + return -1;
> + }
> + } while(section_pattern != (uint32_t)((1 <<
> num_sections) - 1));
> + eit_instance_pattern |= 1 << curr_channel_index;
> + }
> +
> + for(i = 0; i < guide.num_channels; i++) {
> + struct atsc_channel_info *channel = &guide.ch[i];
> + struct atsc_eit_info *ei = &channel->eit[index];
> + struct atsc_eit_section_info *s;
> +
> + if(0 == ei->num_eit_sections) {
> + channel->last_event = NULL;
> + continue;
> + }
> + s = &ei->section[ei->num_eit_sections - 1];
> + /* BUG: it's incorrect when last section has no event
> */
> + if(0 == s->num_events) {
> + channel->last_event = NULL;
> + continue;
> + }
> + channel->last_event = s->events[s->num_events - 1];
> + }
> +
> + return 0;
> +}
> +
> +static int parse_mgt(int dmxfd)
> +{
> + const enum atsc_section_tag tag = stag_atsc_master_guide;
> + struct atsc_mgt_section *mgt;
> + struct atsc_mgt_table *t;
> + int i, j, ret;
> +
> + ret = atsc_scan_table(dmxfd, ATSC_BASE_PID, tag, (void
> **)&mgt);
> + if(0 > ret) {
> + fprintf(stderr, "%s(): error calling
> atsc_scan_table()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + if(0 == ret) {
> + fprintf(stdout, "no MGT in %d seconds\n", TIMEOUT);
> + return 0;
> + }
> +
> + fprintf(stdout, "MGT table:\n");
> + atsc_mgt_section_tables_for_each(mgt, t, i) {
> + struct mgt_table_name table;
> +
> + for(j = 0; j < (int)(sizeof(mgt_tab_name_array) /
> + sizeof(struct mgt_table_name)); j++) {
> + if(t->table_type > mgt_tab_name_array[j].range) {
> + continue;
> + }
> + table = mgt_tab_name_array[j];
> + if(0 == j || mgt_tab_name_array[j - 1].range + 1 ==
> + mgt_tab_name_array[j].range) {
> + j = -1;
> + } else {
> + j = t->table_type - mgt_tab_name_array[j -
> 1].range - 1;
> + if(0x017F == table.range) {
> + guide.eit_pid[j] = t->table_type_PID;
> + } else if (0x027F == table.range) {
> + guide.ett_pid[j] = t->table_type_PID;
> + }
> + }
> + break;
> + }
> +
> + fprintf(stdout, " %2d: type = 0x%04X, PID = 0x%04X,
> %s", i,
> + t->table_type, t->table_type_PID, table.string);
> + if(-1 != j) {
> + fprintf(stdout, " %d", j);
> + }
> + fprintf(stdout, "\n");
> + }
> +
> + return 0;
> +}
> +
> +static int cleanup_guide(void)
> +{
> + int i, j, k;
> +
> + for(i = 0; i < guide.num_channels; i++) {
> + struct atsc_channel_info *channel = &guide.ch[i];
> +
> + if(channel->title_buf.string) {
> + free(channel->title_buf.string);
> + }
> + if(channel->msg_buf.string) {
> + free(channel->msg_buf.string);
> + }
> + for(j = 0; j < channel->num_eits; j++) {
> + struct atsc_eit_info *eit = &channel->eit[j];
> +
> + for(k = 0; k < eit->num_eit_sections; k++) {
> + struct atsc_eit_section_info *section
> =
> + &eit->section[k];
> + if(section->num_events) {
> + free(section->events);
> + }
> + }
> + if(k) {
> + free(eit->section);
> + }
> + }
> + if(j) {
> + free(channel->eit);
> + }
> + }
> +
> + return 0;
> +}
> +
> +static int print_events(struct atsc_channel_info *channel,
> + struct atsc_eit_section_info *section)
> +{
> + int m;
> + char line[256];
> +
> + if(NULL == section) {
> + fprintf(stderr, "%s(): NULL pointer detected",
> __FUNCTION__);
> + return -1;
> + }
> + for(m = 0; m < section->num_events; m++) {
> + struct atsc_event_info *event =
> + section->events[m];
> +
> + if(NULL == event) {
> + continue;
> + }
> + fprintf(stdout, "|%02d:%02d--%02d:%02d| ",
> + event->start.tm_hour, event->start.tm_min,
> + event->end.tm_hour, event->end.tm_min);
> + snprintf(line, event->title_len, "%s",
> + &channel->title_buf.string[event->title_pos]);
> + line[event->title_len] = '\0';
> + fprintf(stdout, "%s\n", line);
> + if(event->msg_len) {
> + int len = event->msg_len;
> + int pos = event->msg_pos;
> + size_t part;
> +
> + do {
> + part = len > 255 ? 255 : len;
> + snprintf(line, part, "%s",
> +
> &channel->msg_buf.string[pos]);
> + line[part] = '\0';
> + fprintf(stdout, "%s", line);
> + len -= part;
> + pos += part;
> + } while(0 < len);
> + fprintf(stdout, "\n");
> + }
> + }
> + return 0;
> +}
> +
> +static int print_guide(void)
> +{
> + int i, j, k;
> +
> + fprintf(stdout, "%s\n", separator);
> + for(i = 0; i < guide.num_channels; i++) {
> + struct atsc_channel_info *channel = &guide.ch[i];
> +
> + fprintf(stdout, "%d.%d %s\n", channel->major_num,
> + channel->minor_num, channel->short_name);
> + for(j = 0; j < channel->num_eits; j++) {
> + struct atsc_eit_info *eit = &channel->eit[j];
> +
> + for(k = 0; k < eit->num_eit_sections; k++) {
> + struct atsc_eit_section_info *section
> =
> + &eit->section[k];
> + if(print_events(channel, section)) {
> + fprintf(stderr, "%s(): error
> calling "
> + "print_events()\n",
> __FUNCTION__);
> + return -1;
> + }
> + }
> + }
> + fprintf(stdout, "%s\n", separator);
> + }
> +
> + return 0;
> +}
> +
> +static int open_demux(int *dmxfd)
> +{
> + if((*dmxfd = dvbdemux_open_demux(adapter, 0, 0)) < 0) {
> + fprintf(stderr, "%s(): error calling
> dvbdemux_open_demux()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + return 0;
> +}
> +
> +static int close_demux(int dmxfd)
> +{
> + if(dvbdemux_stop(dmxfd)) {
> + fprintf(stderr, "%s(): error calling
> dvbdemux_stop()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + return 0;
> +}
> +
> +/* used other utilities as template and generalized here */
> +static int atsc_scan_table(int dmxfd, uint16_t pid, enum
> atsc_section_tag tag,
> + void **table_section)
> +{
> + uint8_t filter[18];
> + uint8_t mask[18];
> + unsigned char sibuf[4096];
> + int size;
> + int ret;
> + struct pollfd pollfd;
> + struct section *section;
> + struct section_ext *section_ext;
> + struct atsc_section_psip *psip;
> +
> + /* create a section filter for the table */
> + memset(filter, 0, sizeof(filter));
> + memset(mask, 0, sizeof(mask));
> + filter[0] = tag;
> + mask[0] = 0xFF;
> + if(dvbdemux_set_section_filter(dmxfd, pid, filter, mask, 1,
> 1)) {
> + fprintf(stderr, "%s(): error calling
> atsc_scan_table()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + /* poll for data */
> + pollfd.fd = dmxfd;
> + pollfd.events = POLLIN | POLLERR |POLLPRI;
> + if((ret = poll(&pollfd, 1, TIMEOUT * 1000)) < 0) {
> + if(ctrl_c) {
> + return 0;
> + }
> + fprintf(stderr, "%s(): error calling poll()\n",
> __FUNCTION__);
> + return -1;
> + }
> +
> + if(0 == ret) {
> + return 0;
> + }
> +
> + /* read it */
> + if((size = read(dmxfd, sibuf, sizeof(sibuf))) < 0) {
> + fprintf(stderr, "%s(): error calling read()\n",
> __FUNCTION__);
> + return -1;
> + }
> +
> + /* parse section */
> + section = section_codec(sibuf, size);
> + if(NULL == section) {
> + fprintf(stderr, "%s(): error calling
> section_codec()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + section_ext = section_ext_decode(section, 0);
> + if(NULL == section_ext) {
> + fprintf(stderr, "%s(): error calling
> section_ext_decode()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + psip = atsc_section_psip_decode(section_ext);
> + if(NULL == psip) {
> + fprintf(stderr,
> + "%s(): error calling
> atsc_section_psip_decode()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + *table_section = table_callback[tag & 0x0F](psip);
> + if(NULL == *table_section) {
> + fprintf(stderr, "%s(): error decode table section\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + return 1;
> +}
> +
> +int main(int argc, char *argv[])
> +{
> + int i, dmxfd;
> + struct dvbfe_handle *fe;
> +
> + program = argv[0];
> +
> + if(1 == argc) {
> + usage();
> + exit(-1);
> + }
> +
> + for( ; ; ) {
> + char c;
> +
> + if(-1 == (c = getopt(argc, argv, "a:f:p:m:th"))) {
> + break;
> + }
> +
> + switch(c) {
> + case 'a':
> + adapter = strtoll(optarg, NULL, 0);
> + break;
> +
> + case 'f':
> + frequency = strtol(optarg, NULL, 0);
> + break;
> +
> + case 'p':
> + period = strtol(optarg, NULL, 0);
> + /* each table covers 3 hours */
> + if((3 * MAX_NUM_EVENT_TABLES) < period) {
> + period = 3 * MAX_NUM_EVENT_TABLES;
> + }
> + break;
> +
> + case 'm':
> + /* just stub, so far ATSC only has VSB_8 */
> + modulation = optarg;
> + break;
> +
> + case 't':
> + enable_ett = 1;
> + break;
> +
> + case 'h':
> + help();
> + exit(0);
> +
> + default:
> + usage();
> + exit(-1);
> + }
> + }
> +
> + memset(separator, '-', sizeof(separator));
> + separator[79] = '\0';
> + memset(&guide, 0, sizeof(struct atsc_virtual_channels_info));
> + memset(guide.eit_pid, 0xFF, MAX_NUM_EVENT_TABLES *
> sizeof(uint16_t));
> + memset(guide.ett_pid, 0xFF, MAX_NUM_EVENT_TABLES *
> sizeof(uint16_t));
> +
> + if(open_frontend(&fe)) {
> + fprintf(stderr, "%s(): error calling
> open_frontend()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + if(open_demux(&dmxfd)) {
> + fprintf(stderr, "%s(): error calling open_demux()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + if(parse_stt(dmxfd)) {
> + fprintf(stderr, "%s(): error calling parse_stt()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + if(parse_mgt(dmxfd)) {
> + fprintf(stderr, "%s(): error calling parse_mgt()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + if(parse_tvct(dmxfd)) {
> + fprintf(stderr, "%s(): error calling parse_tvct()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> +#ifdef ENABLE_RRT
> + if(parse_rrt(dmxfd)) {
> + fprintf(stderr, "%s(): error calling parse_rrt()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +#endif
> +
> + fprintf(stdout, "receiving EIT ");
> + for(i = 0; i < guide.ch[0].num_eits; i++) {
> + if(parse_eit(dmxfd, i, guide.eit_pid[i])) {
> + fprintf(stderr, "%s(): error calling
> parse_eit()\n",
> + __FUNCTION__);
> + return -1;
> + }
> + }
> + fprintf(stdout, "\n");
> +
> + old_handler = signal(SIGINT, int_handler);
> + if(enable_ett) {
> + fprintf(stdout, "receiving ETT ");
> + for(i = 0; i < guide.ch[0].num_eits; i++) {
> + if(0xFFFF != guide.ett_pid[i]) {
> + if(parse_ett(dmxfd, i,
> guide.ett_pid[i])) {
> + fprintf(stderr, "%s(): error
> calling "
> + "parse_eit()\n",
> __FUNCTION__);
> + return -1;
> + }
> + }
> + if(ctrl_c) {
> + break;
> + }
> + }
> + fprintf(stdout, "\n");
> + }
> + signal(SIGINT, old_handler);
> +
> + if(print_guide()) {
> + fprintf(stderr, "%s(): error calling print_guide()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + if(cleanup_guide()) {
> + fprintf(stderr, "%s(): error calling
> cleanup_guide()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + if(close_demux(dmxfd)) {
> + fprintf(stderr, "%s(): error calling close_demux()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + if(close_frontend(fe)) {
> + fprintf(stderr, "%s(): error calling close_demux()\n",
> + __FUNCTION__);
> + return -1;
> + }
> +
> + return 0;
> +}
> diff -uprN dvb-apps/util/atsc_epg/Makefile
> dvb-apps_new/util/atsc_epg/Makefile
> --- dvb-apps/util/atsc_epg/Makefile 1969-12-31 18:00:00.000000000
> -0600
> +++ dvb-apps_new/util/atsc_epg/Makefile 2009-06-18 20:11:58.362985962
> -0500
> @@ -0,0 +1,16 @@
> +# Makefile for linuxtv.org dvb-apps/util/atsc_epg
> +
> +binaries = atsc_epg
> +
> +inst_bin = $(binaries)
> +
> +CPPFLAGS += -I../../lib -std=c99 -D_POSIX_SOURCE
> +#LDFLAGS += -static -L../../lib/libdvbapi -L../../lib/libucsi
> +LDFLAGS += -L../../lib/libdvbapi -L../../lib/libucsi
> +LDLIBS += -ldvbapi -lucsi
> +
> +.PHONY: all
> +
> +all: $(binaries)
> +
> +include ../../Make.rules
> diff -uprN dvb-apps/util/atsc_epg/README dvb-apps_new/util/atsc_epg/README
> --- dvb-apps/util/atsc_epg/README 1969-12-31 18:00:00.000000000 -0600
> +++ dvb-apps_new/util/atsc_epg/README 2009-06-18 20:33:47.836924378 -0500
> @@ -0,0 +1,12 @@
> +Hi there,
> +
> +atsc_epg is a small utility for obtaining information such as programs, EPG
> +(electronic program guide) from an ATSC channel.
> +
> +Pulling the detailed information, i.e., option '-t', may take fairly long
> +time, or never ending, which is a bug of the PSIP generator. Ctrl+C can be
> +used to abort and the received parts will be printed.
> +
> +Enjoy,
> +Yufei
> +
> diff -uprN dvb-apps/util/Makefile dvb-apps_new/util/Makefile
> --- dvb-apps/util/Makefile 2009-06-18 19:43:30.034986539 -0500
> +++ dvb-apps_new/util/Makefile 2009-06-18 20:11:41.169986806 -0500
> @@ -3,6 +3,7 @@
> .PHONY: all clean install
>
> all clean install:
> + $(MAKE) -C atsc_epg $@
> $(MAKE) -C av7110_loadkeys $@
> $(MAKE) -C dib3000-watch $@
> $(MAKE) -C dst-utils $@
>
--
Even uttering "HI" or "HAO" is offensive, sometime, somewhere. Reader
discretion is advised.
--
My, the patch is still pretty well broken.
I leave it to Manu to help you further in the submission procedures ;)
As said, keep your Confucius stuff if you like.
I won't rant a second time on it.
But don't ever complain here, if others do have some good arguments too,
in their footers ...
Cheers,
Hermann
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