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/*
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 * FFprobe : Simple Media Prober based on the FFmpeg libraries
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 * Copyright (c) 2007-2010 Stefano Sabatini
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 *
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 * This file is part of FFmpeg.
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 *
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 * FFmpeg is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * FFmpeg is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with FFmpeg; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#undef HAVE_AV_CONFIG_H
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#include "libavformat/avformat.h"
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#include "libavcodec/avcodec.h"
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#include "libavcodec/opt.h"
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#include "libavutil/pixdesc.h"
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#include "cmdutils.h"
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const char program_name[] = "FFprobe";
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const int program_birth_year = 2007;
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static int do_show_format  = 0;
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static int do_show_streams = 0;
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static int show_value_unit              = 0;
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static int use_value_prefix             = 0;
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static int use_byte_value_binary_prefix = 0;
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static int use_value_sexagesimal_format = 0;
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/* globals */
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static const OptionDef options[];
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/* FFprobe context */
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static const char *input_filename;
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static AVInputFormat *iformat = NULL;
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static const char *binary_unit_prefixes [] = { "", "Ki", "Mi", "Gi", "Ti", "Pi" };
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static const char *decimal_unit_prefixes[] = { "", "K" , "M" , "G" , "T" , "P"  };
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static const char *unit_second_str          = "s"    ;
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static const char *unit_hertz_str           = "Hz"   ;
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static const char *unit_byte_str            = "byte" ;
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static const char *unit_bit_per_second_str  = "bit/s";
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static char *value_string(char *buf, int buf_size, double val, const char *unit)
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{
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    if (unit == unit_second_str && use_value_sexagesimal_format) {
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        double secs;
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        int hours, mins;
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        secs  = val;
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        mins  = (int)secs / 60;
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        secs  = secs - mins * 60;
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        hours = mins / 60;
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        mins %= 60;
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        snprintf(buf, buf_size, "%d:%02d:%09.6f", hours, mins, secs);
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    } else if (use_value_prefix) {
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        const char *prefix_string;
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        int index;
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        if (unit == unit_byte_str && use_byte_value_binary_prefix) {
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            index = (int) (log(val)/log(2)) / 10;
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            index = av_clip(index, 0, FF_ARRAY_ELEMS(binary_unit_prefixes) -1);
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            val /= pow(2, index*10);
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            prefix_string = binary_unit_prefixes[index];
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        } else {
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            index = (int) (log10(val)) / 3;
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            index = av_clip(index, 0, FF_ARRAY_ELEMS(decimal_unit_prefixes) -1);
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            val /= pow(10, index*3);
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            prefix_string = decimal_unit_prefixes[index];
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        }
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        snprintf(buf, buf_size, "%.3f %s%s", val, prefix_string, show_value_unit ? unit : "");
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    } else {
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        snprintf(buf, buf_size, "%f %s", val, show_value_unit ? unit : "");
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    }
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    return buf;
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}
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static char *time_value_string(char *buf, int buf_size, int64_t val, const AVRational *time_base)
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{
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    if (val == AV_NOPTS_VALUE) {
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        snprintf(buf, buf_size, "N/A");
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    } else {
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        value_string(buf, buf_size, val * av_q2d(*time_base), unit_second_str);
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    }
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    return buf;
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}
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static const char *codec_type_string(enum CodecType codec_type)
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{
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    switch (codec_type) {
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    case CODEC_TYPE_VIDEO:        return "video";
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    case CODEC_TYPE_AUDIO:        return "audio";
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    case CODEC_TYPE_DATA:         return "data";
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    case CODEC_TYPE_SUBTITLE:     return "subtitle";
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    case CODEC_TYPE_ATTACHMENT:   return "attachment";
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    default:                      return "unknown";
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    }
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}
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static void show_stream(AVFormatContext *fmt_ctx, int stream_idx)
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{
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    AVStream *stream = fmt_ctx->streams[stream_idx];
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    AVCodecContext *dec_ctx;
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    AVCodec *dec;
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    char val_str[128];
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    AVMetadataTag *tag;
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    char a, b, c, d;
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    printf("[STREAM]\n");
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    printf("index=%d\n",        stream->index);
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    if ((dec_ctx = stream->codec)) {
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        if ((dec = dec_ctx->codec)) {
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            printf("codec_name=%s\n",         dec->name);
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            printf("codec_long_name=%s\n",    dec->long_name);
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        } else {
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            printf("codec_name=unknown\n");
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        }
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        printf("codec_type=%s\n",         codec_type_string(dec_ctx->codec_type));
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        printf("codec_time_base=%d/%d\n", dec_ctx->time_base.num, dec_ctx->time_base.den);
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        /* print AVI/FourCC tag */
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        a = dec_ctx->codec_tag     & 0xff;
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        b = dec_ctx->codec_tag>>8  & 0xff;
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        c = dec_ctx->codec_tag>>16 & 0xff;
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        d = dec_ctx->codec_tag>>24 & 0xff;
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        printf("codec_tag_string=");
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        if (isprint(a)) printf("%c", a); else printf("[%d]", a);
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        if (isprint(b)) printf("%c", b); else printf("[%d]", b);
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        if (isprint(c)) printf("%c", c); else printf("[%d]", c);
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        if (isprint(d)) printf("%c", d); else printf("[%d]", d);
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        printf("\ncodec_tag=0x%04x\n", dec_ctx->codec_tag);
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        switch (dec_ctx->codec_type) {
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        case CODEC_TYPE_VIDEO:
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            printf("width=%d\n",                   dec_ctx->width);
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            printf("height=%d\n",                  dec_ctx->height);
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            printf("has_b_frames=%d\n",            dec_ctx->has_b_frames);
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            printf("sample_aspect_ratio=%d:%d\n",  dec_ctx->sample_aspect_ratio.num,
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                                                   dec_ctx->sample_aspect_ratio.den);
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            printf("display_aspect_ratio=%d:%d\n", dec_ctx->sample_aspect_ratio.num,
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                                                   dec_ctx->sample_aspect_ratio.den);
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            printf("pix_fmt=%s\n",                 dec_ctx->pix_fmt != PIX_FMT_NONE ?
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                   av_pix_fmt_descriptors[dec_ctx->pix_fmt].name : "unknown");
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            break;
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        case CODEC_TYPE_AUDIO:
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            printf("sample_rate=%s\n",             value_string(val_str, sizeof(val_str),
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                                                                dec_ctx->sample_rate,
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                                                                unit_hertz_str));
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            printf("channels=%d\n",                dec_ctx->channels);
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            printf("bits_per_sample=%d\n",         av_get_bits_per_sample(dec_ctx->codec_id));
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            break;
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        }
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    } else {
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        printf("codec_type=unknown\n");
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    }
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    if (fmt_ctx->iformat->flags & AVFMT_SHOW_IDS)
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        printf("id=0x%x\n", stream->id);
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    printf("r_frame_rate=%d/%d\n",         stream->r_frame_rate.num,   stream->r_frame_rate.den);
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    printf("avg_frame_rate=%d/%d\n",       stream->avg_frame_rate.num, stream->avg_frame_rate.den);
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    printf("time_base=%d/%d\n",            stream->time_base.num,      stream->time_base.den);
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    if (stream->language[0])
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        printf("language=%s\n",            stream->language);
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    printf("start_time=%s\n",   time_value_string(val_str, sizeof(val_str), stream->start_time,
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                                                  &stream->time_base));
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    printf("duration=%s\n",     time_value_string(val_str, sizeof(val_str), stream->duration,
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                                                  &stream->time_base));
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    while ((tag = av_metadata_get(stream->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
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        printf("%s=%s\n", tag->key, tag->value);
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    printf("[/STREAM]\n");
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}
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static void show_format(AVFormatContext *fmt_ctx)
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{
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    AVMetadataTag *tag = NULL;
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    char val_str[128];
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    printf("[FORMAT]\n");
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    printf("filename=%s\n",         fmt_ctx->filename);
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    printf("nb_streams=%d\n",       fmt_ctx->nb_streams);
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    printf("format_name=%s\n",      fmt_ctx->iformat->name);
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    printf("format_long_name=%s\n", fmt_ctx->iformat->long_name);
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    printf("start_time=%s\n",       time_value_string(val_str, sizeof(val_str), fmt_ctx->start_time,
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                                                      &AV_TIME_BASE_Q));
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    printf("duration=%s\n",         time_value_string(val_str, sizeof(val_str), fmt_ctx->duration,
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                                                      &AV_TIME_BASE_Q));
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    printf("size=%s\n",             value_string(val_str, sizeof(val_str), fmt_ctx->file_size,
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                                                 unit_byte_str));
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    printf("bit_rate=%s\n",         value_string(val_str, sizeof(val_str), fmt_ctx->bit_rate,
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                                                 unit_bit_per_second_str));
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    while ((tag = av_metadata_get(fmt_ctx->metadata, "", tag, AV_METADATA_IGNORE_SUFFIX)))
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        printf("TAG:%s=%s\n", tag->key, tag->value);
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    printf("[/FORMAT]\n");
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}
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static int open_input_file(AVFormatContext **fmt_ctx_ptr, const char *filename)
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{
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    int err, i;
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    AVFormatContext *fmt_ctx;
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    fmt_ctx = avformat_alloc_context();
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    if ((err = av_open_input_file(&fmt_ctx, filename, iformat, 0, NULL)) < 0) {
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        print_error(filename, err);
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        return err;
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    }
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    /* fill the streams in the format context */
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    if ((err = av_find_stream_info(fmt_ctx)) < 0) {
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        print_error(filename, err);
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        return err;
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    }
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    dump_format(fmt_ctx, 0, filename, 0);
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    /* bind a decoder to each input stream */
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    for (i = 0; i < fmt_ctx->nb_streams; i++) {
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        AVStream *stream = fmt_ctx->streams[i];
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        AVCodec *codec;
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        if (!(codec = avcodec_find_decoder(stream->codec->codec_id))) {
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            fprintf(stderr, "Unsupported codec (id=%d) for input stream %d\n",
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                    stream->codec->codec_id, stream->index);
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        } else if (avcodec_open(stream->codec, codec) < 0) {
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            fprintf(stderr, "Error while opening codec for input stream %d\n",
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                    stream->index);
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        }
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    }
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    *fmt_ctx_ptr = fmt_ctx;
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    return 0;
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}
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static int probe_file(const char *filename)
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{
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    AVFormatContext *fmt_ctx;
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    int ret, i;
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    if ((ret = open_input_file(&fmt_ctx, filename)))
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        return ret;
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    if (do_show_streams)
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        for (i = 0; i < fmt_ctx->nb_streams; i++)
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            show_stream(fmt_ctx, i);
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    if (do_show_format)
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        show_format(fmt_ctx);
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    av_close_input_file(fmt_ctx);
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    return 0;
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}
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static void show_usage(void)
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{
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    printf("Simple multimedia streams analyzer\n");
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    printf("usage: ffprobe [OPTIONS] [INPUT_FILE]\n");
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    printf("\n");
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}
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static void opt_format(const char *arg)
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{
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    iformat = av_find_input_format(arg);
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    if (!iformat) {
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        fprintf(stderr, "Unknown input format: %s\n", arg);
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        exit(1);
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    }
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}
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static void opt_input_file(const char *filename)
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{
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    if (!strcmp(filename, "-"))
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        filename = "pipe:";
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    input_filename = filename;
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}
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static void show_help(void)
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{
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    show_usage();
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    show_help_options(options, "Main options:\n", 0, 0);
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    printf("\n");
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}
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static void opt_pretty(void)
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{
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    show_value_unit              = 1;
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    use_value_prefix             = 1;
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    use_byte_value_binary_prefix = 1;
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    use_value_sexagesimal_format = 1;
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}
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static const OptionDef options[] = {
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#include "cmdutils_common_opts.h"
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    { "f", HAS_ARG, {(void*)opt_format}, "force format", "format" },
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    { "unit",          OPT_BOOL, {(void*)&show_value_unit},   "show unit of the displayed values" },
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    { "prefix",        OPT_BOOL, {(void*)&use_value_prefix}, "use SI prefixes for the displayed values"  },
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    { "byte_binary_prefix", OPT_BOOL, {(void*)&use_byte_value_binary_prefix},
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      "use binary prefixes for byte units" },
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    { "sexagesimal", OPT_BOOL,  {(void*)&use_value_sexagesimal_format},
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      "use sexagesimal format HOURS:MM:SS.MICROSECONDS for time units" },
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    { "pretty", 0, {(void*)&opt_pretty},
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      "prettify the format of displayed values, make it more human readable" },
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    { "show_format",  OPT_BOOL, {(void*)&do_show_format} , "show format/container info" },
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    { "show_streams", OPT_BOOL, {(void*)&do_show_streams}, "show streams info"          },
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    { NULL, },
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};
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int main(int argc, char **argv)
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{
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    av_register_all();
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    show_banner();
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    parse_options(argc, argv, options, opt_input_file);
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    if (!input_filename) {
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        show_usage();
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        fprintf(stderr, "You have to specify one input file.\n");
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        fprintf(stderr, "Use -h to get full help or, even better, run 'man ffprobe'.\n");
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        exit(1);
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    }
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    return probe_file(input_filename);
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}