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comskip.c
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//
// comskip.c
// Copyright (C) 2004 Scott Michael
// Based on the work of Chris Pinkham of MythTV
// comskip 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.
// comskip 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "platform.h"
#include "vo.h"
#include <argtable2.h>
#include "comskip.h"
// Define detection methods
#define BLACK_FRAME 1
#define LOGO 2
#define SCENE_CHANGE 4
#define RESOLUTION_CHANGE 8
#define CC 16
#define AR 32
#define SILENCE 64
#define CUTSCENE 128
// Define logo detection directions
#define HORIZ 0
#define VERT 1
#define DIAG1 2
#define DIAG2 3
// Define CC types
#define NONE 0
#define ROLLUP 1
#define POPON 2
#define PAINTON 3
#define COMMERCIAL 4
// Define aspect ratio
#define FULLSCREEN true
#define WIDESCREEN false
#define AR_TREND 0.8
#define DEEP_SILENCE 6 //max_volume / DEEP_SILENCE defines deep silence
#define OPEN_INPUT 1
#define OPEN_INI 2
#define SAVE_DMP 3
#define SAVE_INI 4
#ifdef DONATOR
#define COMSKIPPUBLIC "donator"
#else
#define COMSKIPPUBLIC "public"
#endif
#define MAX(X,Y) (X>Y?X:Y)
#define MIN(X,Y) (X<Y?X:Y)
// max number of frames that can be marked
#define MAX_IDENTIFIERS 300000
#define MAX_COMMERCIALS 100000
int argument_count;
char ** argument = NULL;
bool initialized = false;
const char* progname = "ComSkip";
FILE* out_file = NULL;
FILE* incommercial_file = NULL;
FILE* ini_file = NULL;
FILE* plist_cutlist_file = NULL;
FILE* zoomplayer_cutlist_file = NULL;
FILE* zoomplayer_chapter_file = NULL;
FILE* scf_file = NULL;
FILE* vcf_file = NULL;
FILE* vdr_file = NULL;
FILE* projectx_file = NULL;
FILE* avisynth_file = NULL;
FILE* videoredo_file = NULL;
FILE* videoredo3_file = NULL;
FILE* btv_file = NULL;
FILE* edl_file = NULL;
FILE* ffmeta_file = NULL;
FILE* ffsplit_file = NULL;
FILE* live_file = NULL;
FILE* ipodchap_file = NULL;
FILE* edlp_file = NULL;
FILE* bcf_file = NULL;
FILE* edlx_file = NULL;
FILE* cuttermaran_file = NULL;
FILE* chapters_file = NULL;
FILE* log_file = NULL;
FILE* womble_file = NULL;
FILE* mls_file = NULL;
FILE* mpgtx_file = NULL;
FILE* dvrcut_file = NULL;
FILE* dvrmstb_file = NULL;
FILE* mpeg2schnitt_file = NULL;
FILE* tuning_file = NULL;
FILE* training_file = NULL;
FILE* aspect_file = NULL;
FILE* cutscene_file = NULL;
FILE* mkvtoolnix_chapters_file = NULL;
FILE* mkvtoolnix_tags_file = NULL;
extern int demux_pid;
extern int selected_audio_pid;
extern int selected_subtitle_pid;
extern int selected_video_pid;
extern int demux_asf;
extern int key;
extern char osname[];
int audio_channels;
#define KDOWN 1
#define KUP 2
#define KLEFT 3
#define KRIGHT 4
#define KNEXT 5
#define KPREV 6
extern int xPos,yPos,lMouseDown;
extern int framenum_infer;
extern int64_t headerpos;
int vo_init_done = 0;
extern int soft_seeking;
static FILE* in_file = NULL;
#undef FRAME_WITH_HISTOGRAM
#undef FRAME_WITH_LOGO
#undef FRAME_WITH_AR
typedef struct
{
// long frame;
int brightness;
int schange_percent;
int minY;
int maxY;
int uniform;
int volume;
double currentGoodEdge;
double ar_ratio;
bool logo_present;
bool commercial;
bool isblack;
int64_t goppos;
double pts;
char pict_type;
int minX;
int maxX;
int hasBright;
int dimCount;
int cutscenematch;
double logo_filter;
int xds;
int cur_segment;
int audio_channels;
#ifdef FRAME_WITH_HISTOGRAM
int histogram[256];
#endif
} frame_info;
int debug_cur_segment;
frame_info* frame = NULL;
long frame_count = 0;
long max_frame_count;
double fps = 22.0; // frames per second (NTSC=29.970, PAL=25)
double get_frame_pts(int f) {
if (!frame) {
return(f / fps);
}
if (f < 1)
f = 1;
if (f > frame_count -1)
f = frame_count -1;
return(frame[f].pts);
}
#define F2V(X) (frame != NULL ? ((X) <= 0 ? frame[1].pts : ((X) >= framenum_real ? frame[framenum_real - 1].pts : frame[X].pts )) : (X) / fps)
#define assert(T) (aaa = ((T) ? 1 : *(int *)0))
//#define F2T(X) (F2V(X) - F2V(1))
#define F2T(X) (F2V(X))
#define F2L(X,Y) (F2V(X) - F2V(Y))
#define F2F(X) ((long) (F2T(X) * fps + 1.5 ))
typedef struct
{
long frame;
int percentage;
} schange_info;
schange_info* schange = NULL;
long schange_count = 0;
long max_schange_count = 0;
typedef struct
{
long frame;
int brightness;
long uniform;
int volume;
int cause;
} black_frame_info;
long black_count = 0;
black_frame_info* black = NULL;
long max_black_count;
typedef struct block_info
{
long f_start;
long f_end;
unsigned int b_head;
unsigned int b_tail;
unsigned int bframe_count;
unsigned int schange_count;
double schange_rate; // in changes per second
double length;
double score;
int combined_count;
int cc_type;
// bool ar;
double ar_ratio;
int audio_channels;
int cause;
int more;
int less;
int brightness;
int volume;
int silence;
int uniform;
int stdev;
char reffer;
double logo;
double correlation;
int strict;
int iscommercial;
} block_info;
#define MAX_BLOCKS 1000
struct block_info cblock[MAX_BLOCKS];
long block_count = 0;
long max_block_count;
#define C_c (1<<1)
#define C_l (1<<0)
#define C_s (1<<2)
#define C_a (1<<5)
#define C_u (1<<3)
#define C_b (1<<4)
#define C_r ((long)1<<29)
#define C_STRICT (1<<6)
#define C_NONSTRICT (1<<7)
#define C_COMBINED (1<<8)
#define C_LOGO (1<<9)
#define C_EXCEEDS (1<<10)
#define C_AR (1<<11)
#define C_SC (1<<12)
#define C_H1 (1<<13)
#define C_H2 (1<<14)
#define C_H3 (1<<15)
#define C_H4 ((long)1<<16)
#define C_H5 ((long)1<<17)
#define C_H6 ((long)1<<22)
#define C_v ((long)1<<18)
#define C_BRIGHT ((long)1<<19)
#define C_NOTBRIGHT ((long)1<<20)
#define C_DIM ((long)1<<21)
#define C_AB ((long)1<<23)
#define C_AU ((long)1<<24)
#define C_AL ((long)1<<25)
#define C_AS ((long)1<<26)
#define C_AC ((long)1<<26)
#define C_F ((long)1<<27)
#define C_t ((long)1<<28)
#define C_H7 ((long)1<<29)
#define C_H8 ((long)1<<30)
#define C_CUTMASK (C_c | C_l | C_s | C_a | C_u | C_b | C_t | C_r)
#define CUTCAUSE(c) ( c & C_CUTMASK)
//int minLogo = 30;
//int maxLogo = 120;
typedef struct
{
int start;
int end;
} logo_block_info;
logo_block_info* logo_block = NULL;
long logo_block_count = 0; // How many groups have already been identified. Increment after fill.
long max_logo_block_count;
bool processCC = false;
extern int reorderCC;
typedef struct
{
unsigned char cc1[2];
unsigned char cc2[2];
} ccPacket;
ccPacket lastcc;
ccPacket cc;
typedef struct
{
long start_frame;
long end_frame;
int type;
} cc_block_info;
cc_block_info* cc_block = NULL;
long cc_block_count = 0;
long max_cc_block_count;
int last_cc_type = NONE;
int current_cc_type = NONE;
bool cc_on_screen = false;
bool cc_in_memory = false;
typedef struct
{
long frame;
char name[40];
int v_chip;
int duration;
int position;
int composite1;
int composite2;
} XDS_block_info;
XDS_block_info* XDS_block = NULL;
long XDS_block_count = 0;
long max_XDS_block_count;
typedef struct
{
long start_frame;
long end_frame;
long text_len;
unsigned char text[256];
} cc_text_info;
cc_text_info* cc_text = NULL;
long cc_text_count = 0;
long max_cc_text_count = 0;
#define AR_UNDEF 0.0
typedef struct
{
int start;
int end;
// bool ar;
double ar_ratio;
int volume;
int height, width;
int minX,maxX,minY,maxY;
} ar_block_info;
ar_block_info* ar_block = NULL;
long ar_block_count = 0; // How many groups have already been identified. Increment after fill.
long max_ar_block_count;
int last_audio_channels = 2;
double last_ar_ratio = 0.0;
double ar_ratio_trend = 0.0;
int ar_ratio_trend_counter = 0;
int ar_ratio_start = 0;
int ar_misratio_trend_counter = 0;
int ar_misratio_start = 0;
#define AC_UNDEF 0
typedef struct
{
int start;
int end;
// bool ar;
int audio_channels;
} ac_block_info;
ac_block_info* ac_block = NULL;
long ac_block_count = 0; // How many groups have already been identified. Increment after fill.
long max_ac_block_count;
typedef struct
{
long start;
long end;
} commercial_list_info;
commercial_list_info* commercial_list = NULL;
int commercial_count = -1;
struct
{
long start_frame;
long end_frame;
int start_block;
int end_block;
double length;
} commercial[MAX_COMMERCIALS];
int reffer_count = -1;
struct
{
long start_frame;
long end_frame;
} reffer[MAX_COMMERCIALS];
#define MAX_ASPECT_RATIOS 1000
struct
{
long frames;
double ar_ratio;
} ar_histogram[MAX_ASPECT_RATIOS];
double dominant_ar;
#define MAX_AUDIO_CHANNELS 12
struct
{
long frames;
int audio_channels;
} ac_histogram[MAX_AUDIO_CHANNELS];
int dominant_ac;
int thread_count = 2;
int hardware_decode = 0;
int skip_B_frames = 0;
int lowres = 0;
bool live_tv = false;
bool output_incommercial = false;
int incommercial_frames = 1000;
int live_tv_retries = 6;
int dvrms_live_tv_retries = 300;
int standoff = 0;
int dvrmsstandoff = 120000;
extern int standoff_retries;
extern int standoff_time;
extern int standoff_size;
extern int standoff_initial_size;
extern int standoff_initial_wait;
char incomingCommandLine[MAX_ARG];
char logofilename[MAX_PATH];
char logfilename[MAX_PATH];
char mpegfilename[MAX_PATH];
char exefilename[MAX_PATH];
char inbasename[MAX_PATH];
char workbasename[MAX_PATH];
char outbasename[MAX_PATH];
char shortbasename[MAX_PATH];
char inifilename[MAX_PATH];
char dictfilename[MAX_PATH];
char out_filename[MAX_PATH];
char incommercial_filename[MAX_PATH];
char outputdirname[MAX_PATH];
char filename[MAX_PATH];
int curvolume = -1;
extern int framenum;
//unsigned int frame_period;
//int audio_framenum = 0;
//extern int64_t pts;
extern int64_t initial_pts;
extern int initial_pts_set;
extern char pict_type;
int ascr,scr;
int framenum_real;
int frames_with_logo;
int framesprocessed = 0;
char HomeDir[256]; // comskip home directory
char tempString[256];
double average_score;
int brightness = 0;
long sum_brightness=0;
long sum_count;
int uniformHistogram[256];
#define UNIFORMSCALE 100
int brightHistogram[256];
int blackHistogram[256];
int volumeHistogram[256];
int silenceHistogram[256];
int logoHistogram[256];
int volumeScale = 10;
int last_brightness = 0;
int min_brightness_found;
int min_volume_found;
int max_logo_gap;
int max_nonlogo_block_length;
double logo_overshoot;
double logo_quality;
int width, old_width, videowidth;
int height, old_height;
int ar_width = 0;
int subsample_video = 0x1ff;
//#define MAXWIDTH 800
//#define MAXHEIGHT 600
#define MAXWIDTH 2000
#define MAXHEIGHT 1200
char haslogo[MAXWIDTH*MAXHEIGHT];
// unsigned char oldframe[MAXWIDTH*MAXHEIGHT];
// variables defining options with defaults
int selftest = 0;
int verbose = 0; // show extra info
double avg_fps = 22;
int border = 10; // border around edge of video to ignore
int ticker_tape=0, ticker_tape_percentage=0; // border from bottom to ignore
int ignore_side=0;
int ignore_left_side=0;
int ignore_right_side=0;
int max_brightness = 60; // frame not black if any pixels checked are greater than this (scale 0 to 255)
int maxbright = 1;
int min_hasBright = 255000;
int min_dimCount = 255000;
int test_brightness = 40; // frame not pure black if any pixels are greater than this, will check average
int max_avg_brightness = 19; // maximum average brightness for a dim frame to be considered black (scale 0 to
int max_volume = 500;
int max_silence = 100;
int min_silence = 12;
int punish_no_logo = true;
int validate_silence = true;
int validate_uniform = true;
int validate_scenechange = true;
int remove_silent_segments = 0;
int validate_ar = true;
int punish = 0;
int reward = 0;
int min_volume=0;
int min_uniform = 0;
int volume_slip = 40;
extern int ms_audio_delay;
int max_repair_size = 40;
//int variable_bitrate = 1;
extern int is_h264;
///brightness (scale 0 to 255)
char ini_text[40000];
///255)
double max_commercialbreak = 600; // maximum length in seconds to consider a segment a commercial break
double min_commercialbreak = 20; // minimum length in seconds to consider a segment a commercial break
double max_commercial_size = 120; // maximum time in seconds for a single commercial
double min_commercial_size = 4; // mimimum time in seconds for a single commercial
double min_show_segment_length = 120.0;
bool require_div5 = 0; // set=1 to only mark breaks divisible by 5 as a commercial.
double div5_tolerance = -1;
bool play_nice = false;
double global_threshold = 1.05;
bool intelligent_brightness = false;
double logo_threshold = 0.80;
double logo_percentage_threshold = 0.25;
double logo_max_percentage_of_screen = 0.12;
int logo_filter = 0;
int non_uniformity = 500;
int brightness_jump = 200;
double black_percentile = 0.0076;
double uniform_percentile = 0.003;
double score_percentile = 0.71;
double logo_percentile = 0.92;
double logo_fraction = 0.40;
int commDetectMethod = BLACK_FRAME + LOGO + RESOLUTION_CHANGE + AR + SILENCE + (PROCESS_CC ? CC : 0);
int giveUpOnLogoSearch = 2000; // If no logo is identified after x seconds into the show - give up.
int delay_logo_search = 0; // If no logo is identified after x seconds into the show - give up.
int cut_on_ar_change = 1;
int cut_on_ac_change = 1;
int added_recording = 14;
int after_start = 0;
int before_end = 0;
int delete_show_after_last_commercial = false;
int delete_show_before_first_commercial = false;
int delete_block_after_commercial = 0;
int min_commercial_break_at_start_or_end = 39;
int always_keep_first_seconds = 0;
int always_keep_last_seconds = 0;
bool connect_blocks_with_logo = true;
int delete_show_before_or_after_current = false;
bool deleteLogoFile = true;
bool useExistingLogoFile = true;
bool startOverAfterLogoInfoAvail = true;
int doublCheckLogoCount = 0;
bool output_default = true;
bool output_chapters = false;
bool sage_framenumber_bug = false;
bool sage_minute_bug = false;
bool enable_mencoder_pts = false;
bool output_plist_cutlist = false;
bool output_zoomplayer_cutlist = false;
bool output_zoomplayer_chapter = false;
bool output_scf = false;
bool output_videoredo = false;
bool output_videoredo3 = false;
bool output_ipodchap = false;
int videoredo_offset = 2;
int edl_offset = 0;
int timeline_repair = 1;
int edl_skip_field = 0;
bool output_edl = false;
bool output_live = false;
bool output_edlp = false;
bool output_bsplayer = false;
bool output_edlx = false;
bool output_btv = false;
bool output_cuttermaran = false;
bool output_mpeg2schnitt = false;
char cuttermaran_options[1024];
char mpeg2schnitt_options[1024];
char avisynth_options[1024];
char dvrcut_options[1024];
bool output_demux = false;
bool output_data = false;
bool output_srt = false;
bool output_smi = false;
bool output_timing = false;
bool output_womble = false;
bool output_mls = false;
bool output_mpgtx = false;
bool output_dvrcut = false;
bool output_dvrmstb = false;
bool output_vdr = false;
bool output_vcf = false;
bool output_projectx = false;
bool output_avisynth = false;
int output_mkvtoolnix = 0;
bool output_debugwindow = false;
bool output_console = true;
int disable_heuristics = 0;
char windowtitle[1024] = "Comskip - %s";
bool output_tuning = false;
int output_training = 0;
bool output_false = false;
bool output_aspect = false;
bool output_ffmeta = false;
bool output_ffsplit = false;
int noise_level=5;
bool framearray = true;
bool output_framearray = false;
bool only_strict = false;
double length_strict_modifier = 3.0;
double length_nonstrict_modifier = 1.5;
double combined_length_strict_modifier = 2.0;
double combined_length_nonstrict_modifier = 1.25;
double logo_present_modifier = 0.01;
double punish_modifier = 2.0;
double punish_threshold = 1.3;
double reward_modifier = 0.5;
int after_logo=0;
int before_logo=0;
double shrink_logo=5.0;
int shrink_logo_tail=0;
int where_logo=0;
double excessive_length_modifier = 0.01;
double dark_block_modifier = 0.3;
int padding = 0;
int remove_before = 0;
int remove_after = 0;
double min_schange_modifier = 0.5;
double max_schange_modifier = 2.0;
int schange_threshold = 90;
int schange_cutlevel = 15;
double cc_commercial_type_modifier = 4.0;
double cc_wrong_type_modifier = 2.0;
double cc_correct_type_modifier = 0.75;
double ar_wrong_modifier = 2.0;
double ac_wrong_modifier = 1.0;
double ar_rounding = 100;
double ar_delta = 0.08;
long avg_brightness = 0;
long maxi_volume = 0;
long avg_volume = 0;
long avg_silence = 0;
long avg_uniform = 0;
double avg_schange = 0.0;
double dictionary_modifier = 1.05;
int aggressive_logo_rejection = false;
unsigned int min_black_frames_for_break = 1;
bool detectBlackFrames;
bool detectSceneChanges;
int dummy1;
unsigned char* frame_ptr = 0;
int dummy2;
// bool frameIsBlack;
bool sceneHasChanged;
int sceneChangePercent;
bool lastFrameWasBlack = false;
bool lastFrameWasSceneChange = false;
#include <libavutil/avutil.h> // only for DECLARE_ALIGNED
static DECLARE_ALIGNED(32, long, histogram)[256];
static DECLARE_ALIGNED(32, long, lastHistogram)[256];
#define MAXCSLENGTH 400*300
#define MAXCUTSCENES 8
void LoadCutScene(const char *filename);
void RecordCutScene(int frame_count,int brightness);
char cutscenefile[1024];
char cutscenefile1[1024];
char cutscenefile2[1024];
char cutscenefile3[1024];
char cutscenefile4[1024];
char cutscenefile5[1024];
char cutscenefile6[1024];
char cutscenefile7[1024];
char cutscenefile8[1024];
int cutscenematch;
int cutscenedelta = 10;
int cutsceneno = 0;
int cutscenes=0;
unsigned char cutscene[MAXCUTSCENES][MAXCSLENGTH];
int csbrightness[MAXCUTSCENES];
int cslength[MAXCUTSCENES];
// int cssum[MAXCUTSCENES];
// int csmatch[MAXCUTSCENES];
char debugText[20000];
bool logoInfoAvailable;
bool secondLogoSearch = false;
bool logoBuffersFull = false;
int logoTrendCounter = 0;
double logoFreq = 1.0; // times fps between logo checks
int num_logo_buffers = 50; // How many frames to compare at a time for logo detection;
bool lastLogoTest = false;
// int logoTrendStartFrame;
int* logoFrameNum = NULL; // Keep track of the frame numbers of each buffer
int oldestLogoBuffer; // Which buffer is the oldest?
// int lastRealLogoChange;
bool curLogoTest = false;
int minHitsForTrend = 10;
// bool hindsightLogoState = true;
double logoPercentage = 0.0;
bool reverseLogoLogic = false;
#define MULTI_EDGE_BUFFER 0
#if MULTI_EDGE_BUFFER
unsigned char ** horiz_edges = NULL; // rotating storage for detected horizontal edges
unsigned char ** vert_edges = NULL; // rotating storage for detected vertical edges
#else
unsigned char horiz_count[MAXHEIGHT*MAXWIDTH];
unsigned char vert_count[MAXHEIGHT*MAXWIDTH];
#endif
double borderIgnore = .05; // Percentage of each side to ignore for logo detection
int subtitles = 0;
int logo_at_bottom = 0;
int edge_radius = 2;
int int_edge_radius = 2;
int edge_step = 1;
int edge_level_threshold = 5;
int edge_weight = 10;
int edge_count = 0;
int hedge_count = 0;
int vedge_count = 0;
int newestLogoBuffer = -1; // Which buffer is the newest? Increments prior to fill so start at -1
unsigned char ** logoFrameBuffer = NULL; // rotating storage for frames
int logoFrameBufferSize = 0;
int lwidth;
int lheight;
int tlogoMinX;
int tlogoMaxX;
int tlogoMinY;
int tlogoMaxY;
int edgemask_filled=0;
unsigned char thoriz_edgemask[MAXHEIGHT*MAXWIDTH];
unsigned char tvert_edgemask[MAXHEIGHT*MAXWIDTH];
int clogoMinX;
int clogoMaxX;
int clogoMinY;
int clogoMaxY;
unsigned char choriz_edgemask[MAXHEIGHT*MAXWIDTH];
unsigned char cvert_edgemask[MAXHEIGHT*MAXWIDTH];
int play_nice_start = -1;
int play_nice_end = -1;
long play_nice_sleep = 2L;
FILE *dump_data_file = (FILE *)NULL;
uint8_t ccData[500];
int ccDataLen;
static uint8_t prevccData[500];
static int prevccDataLen;
long cc_count[5] = { 0, 0, 0, 0, 0 };
int most_cc_type = NONE;
unsigned char ** cc_screen = NULL;
unsigned char ** cc_memory = NULL;
int minY; // The top of the picture for aspect ratio calculation
int maxY; // The bottom of the picture for aspect ratio calculation
int minX; // The top of the picture for aspect ratio calculation
int maxX; // The bottom of the picture for aspect ratio calculation
//bool currentAR;
//bool lastAR;
//bool showAvgAR;
bool isSecondPass = false;
long lastFrame = 0;
long lastFrameCommCalculated = 0;
bool ccCheck = false;
bool loadingCSV = false;
bool loadingTXT = false;
int helpflag = 0;
int timeflag = 0;
#define MAXTIMEFLAG 2
int recalculate=0;
char *helptext[]=
{
"Help: press any key to remove",
"Key Action",
"Arrows Reposition current location",
"PgUp/PgDn Reposition current location",
"n/p Jump to next/previous cutpoint",
"e/b Jump to next/previous end of cblock",
"z/u Zoom in/out on the timeline",
"g Graph on/off",
"x XDS info on/off",
"t Toggle current cblock between show and commercial",
"w Write the new cutpoints to the ouput files",
"c Dump this frame as CutScene"
"F2 Reduce the max_volume detection level",
"F3 Reduce the non_uniformity detection level",
"F4 Reduce the max_avg_brighness detection level",
"F5 Toggle frame number / timecode display",
"",
"During commercial break review",
"e Set end of commercial to this position",
"b Set begin of commercial to this position",
"i Insert a new commercial",
"d Delete the commercial at current location",
"s Jump to Start of the recording",
"f Jump to Finish of the recording",
0
};
double currentGoodEdge = 0.0;
int lineStart[MAXHEIGHT]; /* Area to include for black frame detection, non logo area */
int lineEnd[MAXHEIGHT];
unsigned char hor_edgecount[MAXHEIGHT*MAXWIDTH];
unsigned char ver_edgecount[MAXHEIGHT*MAXWIDTH];
unsigned char max_br[MAXHEIGHT*MAXWIDTH];
unsigned char min_br[MAXHEIGHT*MAXWIDTH];
unsigned char graph[MAXHEIGHT*MAXWIDTH*3];
int gy=0;
// Function Prototypes
bool BuildBlocks(bool recalc);
void Recalc(void);
double ValidateBlackFrames(long reason, double ratio, int remove);
int DetectCommercials(int, double);
bool BuildMasterCommList(void);
void WeighBlocks(void);
bool OutputBlocks(void);
void OutputAspect(void);
void OutputTraining(void);
bool ProcessLogoTest(int framenum_real, int curLogoTest, int close);
void OutputStrict(double len, double delta, double tol);
int InputReffer(char *ext, int setfps);
bool IsStandardCommercialLength(double length, double tolerance, bool strict);
bool LengthWithinTolerance(double test_length, double expected_length, double tolerance);
double FindNumber(char* str1, char* str2, double v);
char * FindString(char* str1, char* str2, char *v);
void AddIniString( char *s);
char* intSecondsToStrMinutes(int seconds);
char* dblSecondsToStrMinutes(double seconds);
FILE* LoadSettings(int argc, char ** argv);
int GetAvgBrightness(void);
bool CheckFrameIsBlack(void);
void BuildBlackFrameCommList(void);
bool CheckSceneHasChanged(void);
#if 0
void BuildSceneChangeCommList(void);
void BuildSceneChangeCommList2(void);
#endif
void backfill_frame_volumes();
void PrintLogoFrameGroups(void);
void PrintCCBlocks(void);
void ResetLogoBuffers(void);
void EdgeDetect(unsigned char* frame_ptr, int maskNumber);
void EdgeCount(unsigned char* frame_ptr);
void FillLogoBuffer(void);
bool SearchForLogoEdges(void);
double CheckStationLogoEdge(unsigned char* testFrame);
double DoubleCheckStationLogoEdge(unsigned char* testFrame);
void SetEdgeMaskArea(unsigned char* temp);
int ClearEdgeMaskArea(unsigned char* temp, unsigned char* test);
int CountEdgePixels(void);
void DumpEdgeMask(unsigned char* buffer, int direction);
void DumpEdgeMasks(void);
void BuildBlackFrameAndLogoCommList(void);
bool CheckFramesForLogo(int start, int end);
char CheckFramesForCommercial(int start, int end);
char CheckFramesForReffer(int start, int end);
void SaveLogoMaskData(void);
void LoadLogoMaskData(void);
double CalculateLogoFraction(int start, int end);
bool CheckFrameForLogo(int i);
int CountSceneChanges(int StartFrame, int EndFrame);
void Debug(int level, char* fmt, ...);
void InitProcessLogoTest(void);
void InitComSkip(void);
void InitLogoBuffers(void);
void FindIniFile(void);
double FindScoreThreshold(double percentile);
void OutputLogoHistogram(int buckets);
void OutputbrightHistogram(void);
void OutputuniformHistogram(void);
void OutputHistogram(int *histogram, int scale, char *title, bool truncate);
int FindBlackThreshold(double percentile);
int FindUniformThreshold(double percentile);
void OutputFrameArray(bool screenOnly);
void OutputBlackArray();
void OutputFrame();
void OpenOutputFiles();
void InitializeFrameArray(long i);
void InitializeBlackArray(long i);
void InitializeSchangeArray(long i);
void InitializeLogoBlockArray(long i);
void InitializeARBlockArray(long i);
void InitializeACBlockArray(long i);
void InitializeBlockArray(long i);
void InitializeCCBlockArray(long i);
void InitializeCCTextArray(long i);
void PrintArgs(void);
void close_dump(void);
void OutputCommercialBlock(int i, long prev, long start, long end, bool last);
void ProcessCSV(FILE *);
void OutputCCBlock(long i);
void ProcessCCData(void);
bool CheckOddParity(unsigned char ch);
void AddNewCCBlock(long current_frame, int type, bool cc_on_screen, bool cc_in_memory);
char* CCTypeToStr(int type);
int DetermineCCTypeForBlock(long start, long end);
double AverageARForBlock(int start, int end);
void SetARofBlocks(void);
bool ProcessCCDict(void);
int FindBlock(long frame);
void BuildCommListAsYouGo(void);
void BuildCommercial(void);
int RetreiveVolume (int f);
void InsertBlackFrame(int f, int b, int u, int v, int c);
extern void DecodeOnePicture(FILE * f, double pts);
int CEW_init(int argc, char *argv[]);
char *CauseString(int i)
{
static char cs[4][80];
static int ii=0;
char *c = &(cs[ii][0]);
char *rc = &(cs[ii][0]);
*c++ = (i & C_H8 ? '8' : ' ');
*c++ = (i & C_H7 ? '7' : ' ');
*c++ = (i & C_H6 ? '6' : ' ');
*c++ = (i & C_H5 ? '5' : ' ');
*c++ = (i & C_H4 ? '4' : ' ');
*c++ = (i & C_H3 ? '3' : ' ');
*c++ = (i & C_H2 ? '2' : ' ');