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/*

 * log functions

 * Copyright (c) 2003 Michel Bardiaux

 *

 * This file is part of FFmpeg.

 *

 * FFmpeg 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.

 *

 * FFmpeg 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 FFmpeg; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

 */

/**

 * @file

 * logging functions

 */

#include "config.h"

#if HAVE_UNISTD_H

#include 

#endif

#include 

#include 

#include "avutil.h"

#include "bprint.h"

#include "common.h"

#include "internal.h"

#include "log.h"

#if HAVE_PTHREADS

#include 

static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

#endif

#define LINE_SZ 1024

static int av_log_level = AV_LOG_INFO;

static int flags;

#define HAVE_SETCONSOLETEXTATTRIBUTE 0

#if HAVE_SETCONSOLETEXTATTRIBUTE

#include 

static const uint8_t color[16 + AV_CLASS_CATEGORY_NB] = {

    [AV_LOG_PANIC  /8] = 12,

    [AV_LOG_FATAL  /8] = 12,

    [AV_LOG_ERROR  /8] = 12,

    [AV_LOG_WARNING/8] = 14,

    [AV_LOG_INFO   /8] =  7,

    [AV_LOG_VERBOSE/8] = 10,

    [AV_LOG_DEBUG  /8] = 10,

    [16+AV_CLASS_CATEGORY_NA              ] =  7,

    [16+AV_CLASS_CATEGORY_INPUT           ] = 13,

    [16+AV_CLASS_CATEGORY_OUTPUT          ] =  5,

    [16+AV_CLASS_CATEGORY_MUXER           ] = 13,

    [16+AV_CLASS_CATEGORY_DEMUXER         ] =  5,

    [16+AV_CLASS_CATEGORY_ENCODER         ] = 11,

    [16+AV_CLASS_CATEGORY_DECODER         ] =  3,

    [16+AV_CLASS_CATEGORY_FILTER          ] = 10,

    [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] =  9,

    [16+AV_CLASS_CATEGORY_SWSCALER        ] =  7,

    [16+AV_CLASS_CATEGORY_SWRESAMPLER     ] =  7,

};

static int16_t background, attr_orig;

static HANDLE con;

#define set_color(x)  SetConsoleTextAttribute(con, background | color[x])

#define set_256color set_color

#define reset_color() SetConsoleTextAttribute(con, attr_orig)

#else

static const uint32_t color[16 + AV_CLASS_CATEGORY_NB] = {

    [AV_LOG_PANIC  /8] =  52 << 16 | 196 << 8 | 0x41,

    [AV_LOG_FATAL  /8] = 208 <<  8 | 0x41,

    [AV_LOG_ERROR  /8] = 196 <<  8 | 0x11,

    [AV_LOG_WARNING/8] = 226 <<  8 | 0x03,

    [AV_LOG_INFO   /8] = 253 <<  8 | 0x09,

    [AV_LOG_VERBOSE/8] =  40 <<  8 | 0x02,

    [AV_LOG_DEBUG  /8] =  34 <<  8 | 0x02,

    [16+AV_CLASS_CATEGORY_NA              ] = 250 << 8 | 0x09,

    [16+AV_CLASS_CATEGORY_INPUT           ] = 219 << 8 | 0x15,

    [16+AV_CLASS_CATEGORY_OUTPUT          ] = 201 << 8 | 0x05,

    [16+AV_CLASS_CATEGORY_MUXER           ] = 213 << 8 | 0x15,

    [16+AV_CLASS_CATEGORY_DEMUXER         ] = 207 << 8 | 0x05,

    [16+AV_CLASS_CATEGORY_ENCODER         ] =  51 << 8 | 0x16,

    [16+AV_CLASS_CATEGORY_DECODER         ] =  39 << 8 | 0x06,

    [16+AV_CLASS_CATEGORY_FILTER          ] = 155 << 8 | 0x12,

    [16+AV_CLASS_CATEGORY_BITSTREAM_FILTER] = 192 << 8 | 0x14,

    [16+AV_CLASS_CATEGORY_SWSCALER        ] = 153 << 8 | 0x14,

    [16+AV_CLASS_CATEGORY_SWRESAMPLER     ] = 147 << 8 | 0x14,

};

#define set_color(x)  fprintf(stderr, "\033[%d;3%dm", (color[x] >> 4) & 15, color[x] & 15)

#define set_256color(x) fprintf(stderr, "\033[48;5;%dm\033[38;5;%dm", (color[x] >> 16) & 0xff, (color[x] >> 8) & 0xff)

#define reset_color() fprintf(stderr, "\033[0m")

#endif

static int use_color = 0;

static void colored_fputs(int level, const char *str)

{

    if (use_color < 0) {

#if HAVE_SETCONSOLETEXTATTRIBUTE

        CONSOLE_SCREEN_BUFFER_INFO con_info;

        con = GetStdHandle(STD_ERROR_HANDLE);

        use_color = (con != INVALID_HANDLE_VALUE) && !getenv("NO_COLOR") &&

                    !getenv("AV_LOG_FORCE_NOCOLOR");

        if (use_color) {

            GetConsoleScreenBufferInfo(con, &con_info);

            attr_orig  = con_info.wAttributes;

            background = attr_orig & 0xF0;

        }

#elif HAVE_ISATTY

//        use_color = !getenv("NO_COLOR") && !getenv("AV_LOG_FORCE_NOCOLOR") &&

//                    (getenv("TERM") && isatty(2) ||

//                     getenv("AV_LOG_FORCE_COLOR"));

#else

//        use_color = getenv("AV_LOG_FORCE_COLOR") && !getenv("NO_COLOR") &&

//                   !getenv("AV_LOG_FORCE_NOCOLOR");

#endif

    }

    if (use_color == 1) {

        set_color(level);

    } else if (use_color == 256)

        set_256color(level);

    fputs(str, stderr);

    if (use_color) {

        reset_color();

    }

}

const char *av_default_item_name(void *ptr)

{

    return (*(AVClass **) ptr)->class_name;

}

AVClassCategory av_default_get_category(void *ptr)

{

    return (*(AVClass **) ptr)->category;

}

static void sanitize(uint8_t *line){

    while(*line){

        if(*line < 0x08 || (*line > 0x0D && *line < 0x20))

            *line='?';

        line++;

    }

}

static int get_category(void *ptr){

    AVClass *avc = *(AVClass **) ptr;

    if(    !avc

        || (avc->version&0xFF)<100

        ||  avc->version < (51 << 16 | 59 << 8)

        ||  avc->category >= AV_CLASS_CATEGORY_NB) return AV_CLASS_CATEGORY_NA + 16;

    if(avc->get_category)

        return avc->get_category(ptr) + 16;

    return avc->category + 16;

}

static void format_line(void *ptr, int level, const char *fmt, va_list vl,

                        AVBPrint part[3], int *print_prefix, int type[2])

{

    AVClass* avc = ptr ? *(AVClass **) ptr : NULL;

    av_bprint_init(part+0, 0, 1);

    av_bprint_init(part+1, 0, 1);

    av_bprint_init(part+2, 0, 65536);

    if(type) type[0] = type[1] = AV_CLASS_CATEGORY_NA + 16;

    if (*print_prefix && avc) {

        if (avc->parent_log_context_offset) {

            AVClass** parent = *(AVClass ***) (((uint8_t *) ptr) +

                                   avc->parent_log_context_offset);

            if (parent && *parent) {

                av_bprintf(part+0, "[%s @ %p] ",

                         (*parent)->item_name(parent), parent);

                if(type) type[0] = get_category(parent);

            }

        }

        av_bprintf(part+1, "[%s @ %p] ",

                 avc->item_name(ptr), ptr);

        if(type) type[1] = get_category(ptr);

    }

    av_vbprintf(part+2, fmt, vl);

    if(*part[0].str || *part[1].str || *part[2].str) {

        char lastc = part[2].len ? part[2].str[part[2].len - 1] : 0;

        *print_prefix = lastc == '\n' || lastc == '\r';

    }

}

void av_log_format_line(void *ptr, int level, const char *fmt, va_list vl,

                        char *line, int line_size, int *print_prefix)

{

    AVBPrint part[3];

    format_line(ptr, level, fmt, vl, part, print_prefix, NULL);

    snprintf(line, line_size, "%s%s%s", part[0].str, part[1].str, part[2].str);

    av_bprint_finalize(part+2, NULL);

}

void av_log_default_callback(void* ptr, int level, const char* fmt, va_list vl)

{

    static int print_prefix = 1;

    static int count;

    static char prev[LINE_SZ];

    AVBPrint part[3];

    char line[LINE_SZ];

    static int is_atty;

    int type[2];

    if (level > av_log_level)

        return;

#if HAVE_PTHREADS

    pthread_mutex_lock(&mutex);

#endif

    format_line(ptr, level, fmt, vl, part, &print_prefix, type);

    snprintf(line, sizeof(line), "%s%s%s", part[0].str, part[1].str, part[2].str);

    if (print_prefix && (flags & AV_LOG_SKIP_REPEATED) && !strcmp(line, prev) &&

        *line && line[strlen(line) - 1] != '\r'){

        count++;

        if (is_atty == 1)

            fprintf(stderr, "    Last message repeated %d times\r", count);

        goto end;

    }

    if (count > 0) {

        fprintf(stderr, "    Last message repeated %d times\n", count);

        count = 0;

    }

    strcpy(prev, line);

    sanitize(part[0].str);

    colored_fputs(type[0], part[0].str);

    sanitize(part[1].str);

    colored_fputs(type[1], part[1].str);

    sanitize(part[2].str);

    colored_fputs(av_clip(level >> 3, 0, 6), part[2].str);

end:

    av_bprint_finalize(part+2, NULL);

#if HAVE_PTHREADS

    pthread_mutex_unlock(&mutex);

#endif

}

static void (*av_log_callback)(void*, int, const char*, va_list) =

    av_log_default_callback;

void av_log(void* avcl, int level, const char *fmt, ...)

{

    AVClass* avc = avcl ? *(AVClass **) avcl : NULL;

    va_list vl;

    va_start(vl, fmt);

    if (avc && avc->version >= (50 << 16 | 15 << 8 | 2) &&

        avc->log_level_offset_offset && level >= AV_LOG_FATAL)

        level += *(int *) (((uint8_t *) avcl) + avc->log_level_offset_offset);

    av_vlog(avcl, level, fmt, vl);

    va_end(vl);

}

void av_vlog(void* avcl, int level, const char *fmt, va_list vl)

{

    void (*log_callback)(void*, int, const char*, va_list) = av_log_callback;

    if (log_callback)

        log_callback(avcl, level, fmt, vl);

}

int av_log_get_level(void)

{

    return av_log_level;

}

void av_log_set_level(int level)

{

    av_log_level = level;

}

void av_log_set_flags(int arg)

{

    flags = arg;

}

void av_log_set_callback(void (*callback)(void*, int, const char*, va_list))

{

    av_log_callback = callback;

}

static void missing_feature_sample(int sample, void *avc, const char *msg,

                                   va_list argument_list)

{

    av_vlog(avc, AV_LOG_WARNING, msg, argument_list);

    av_log(avc, AV_LOG_WARNING, " is not implemented. Update your FFmpeg "

           "version to the newest one from Git. If the problem still "

           "occurs, it means that your file has a feature which has not "

           "been implemented.\n");

    if (sample)

        av_log(avc, AV_LOG_WARNING, "If you want to help, upload a sample "

               "of this file to ftp://upload.ffmpeg.org/MPlayer/incoming/ "

               "and contact the ffmpeg-devel mailing list.\n");

}

void avpriv_request_sample(void *avc, const char *msg, ...)

{

    va_list argument_list;

    va_start(argument_list, msg);

    missing_feature_sample(1, avc, msg, argument_list);

    va_end(argument_list);

}

void avpriv_report_missing_feature(void *avc, const char *msg, ...)

{

    va_list argument_list;

    va_start(argument_list, msg);

    missing_feature_sample(0, avc, msg, argument_list);

    va_end(argument_list);

}