/*****************************************************************************
 * x264: h264 encoder/decoder testing program.
 *****************************************************************************
 * Copyright (C) 2003 Laurent Aimar
 * $Id: x264.c,v 1.1 2004/06/03 19:24:12 fenrir Exp $
 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
 *
 * 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., 59 Temple Place - Suite 330, Boston, MA  02111, USA.
 *****************************************************************************/

#define _LARGEFILE_SOURCE
#define _FILE_OFFSET_BITS 64

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>

#include <signal.h>
#define _GNU_SOURCE
#include <getopt.h>

#ifdef _MSC_VER
#include <io.h>     /* _setmode() */
#include <fcntl.h>  /* _O_BINARY */
#endif

#ifndef _MSC_VER
#include "config.h"
#endif

#include "include/common.h"
#include "include/x264.h"
#include "muxers.h"

#define DATA_MAX 3000000
uint8_t data[DATA_MAX];

/* Ctrl-C handler */
static int     b_ctrl_c = 0;
static int     b_exit_on_ctrl_c = 0;
static void    SigIntHandler( int a )
{
    if( b_exit_on_ctrl_c )
        exit(0);
    b_ctrl_c = 1;
}

typedef struct {
    int b_progress;
    int i_seek;
    hnd_t hin;
    hnd_t hout;
    FILE *qpfile;
} cli_opt_t;

/* input file operation function pointers */
int (*p_open_infile)( char *psz_filename, hnd_t *p_handle, x264_param_t *p_param );
int (*p_get_frame_total)( hnd_t handle );
int (*p_read_frame)( x264_picture_t *p_pic, hnd_t handle, int i_frame );
int (*p_close_infile)( hnd_t handle );

/* output file operation function pointers */
static int (*p_open_outfile)( char *psz_filename, hnd_t *p_handle );
static int (*p_set_outfile_param)( hnd_t handle, x264_param_t *p_param );
static int (*p_write_nalu)( hnd_t handle, uint8_t *p_nal, int i_size );
static int (*p_set_eop)( hnd_t handle, x264_picture_t *p_picture );
static int (*p_close_outfile)( hnd_t handle );

static void Help( x264_param_t *defaults, int b_longhelp );
static int  Parse( int argc, char **argv, x264_param_t *param, cli_opt_t *opt );
static int  Encode( x264_param_t *param, cli_opt_t *opt );

static int  Init_param(x264_param_t *param, cli_opt_t *opt );


/****************************************************************************
 * main:
 ****************************************************************************/
int main( int argc, char **argv )
{
    x264_param_t param;
    cli_opt_t opt;

#ifdef _MSC_VER
    _setmode(_fileno(stdin), _O_BINARY);
    _setmode(_fileno(stdout), _O_BINARY);
#endif

    x264_param_default( &param );

    /* Parse command line */

    if( Init_param(&param, &opt ) < 0 )
        return -1;

    /* Control-C handler */
//    signal( SIGINT, SigIntHandler );

    return Encode( &param, &opt );
}

static char const *strtable_lookup( const char * const table[], int index )
{
    int i = 0; while( table[i] ) i++;
    return ( ( index >= 0 && index < i ) ? table[ index ] : "???" );
}

/*****************************************************************************
 * Help:
 *****************************************************************************/
static void Help( x264_param_t *defaults, int b_longhelp )
{
#define H0 printf
#define H1 if(b_longhelp) printf
    H0( "x264 core:%d%s\n"
        "Syntax: x264 [options] -o outfile infile [widthxheight]\n"
        "\n"
        "Infile can be raw YUV 4:2:0 (in which case resolution is required),\n"
        "  or YUV4MPEG 4:2:0 (*.y4m),\n"
        "  or AVI or Avisynth if compiled with AVIS support (%s).\n"
        "Outfile type is selected by filename:\n"
        " .264 -> Raw bytestream\n"
        " .mkv -> Matroska\n"
        " .mp4 -> MP4 if compiled with GPAC support (%s)\n"
        "\n"
        "Options:\n"
        "\n"
        "  -h, --help                  List the more commonly used options\n"
        "      --longhelp              List all options\n"
        "\n",
        X264_BUILD, X264_VERSION,
#ifdef AVIS_INPUT
        "yes",
#else
        "no",
#endif
#ifdef MP4_OUTPUT
        "yes"
#else
        "no"
#endif
      );
    H0( "Frame-type options:\n" );
    H0( "\n" );
    H0( "  -I, --keyint <integer>      Maximum GOP size [%d]\n", defaults->i_keyint_max );
    H1( "  -i, --min-keyint <integer>  Minimum GOP size [%d]\n", defaults->i_keyint_min );
    H1( "      --scenecut <integer>    How aggressively to insert extra I-frames [%d]\n", defaults->i_scenecut_threshold );
    H0( "  -b, --bframes <integer>     Number of B-frames between I and P [%d]\n", defaults->i_bframe );
    H1( "      --no-b-adapt            Disable adaptive B-frame decision\n" );
    H1( "      --b-bias <integer>      Influences how often B-frames are used [%d]\n", defaults->i_bframe_bias );
    H0( "      --b-pyramid             Keep some B-frames as references\n" );
    H0( "      --no-cabac              Disable CABAC\n" );
    H0( "  -r, --ref <integer>         Number of reference frames [%d]\n", defaults->i_frame_reference );
    H1( "      --nf                    Disable loop filter\n" );
    H0( "  -f, --filter <alpha:beta>   Loop filter AlphaC0 and Beta parameters [%d:%d]\n",
                                       defaults->i_deblocking_filter_alphac0, defaults->i_deblocking_filter_beta );
    H0( "\n" );
    H0( "Ratecontrol:\n" );
    H0( "\n" );
    H0( "  -q, --qp <integer>          Set QP (0=lossless) [%d]\n", defaults->rc.i_qp_constant );
    H0( "  -B, --bitrate <integer>     Set bitrate (kbit/s)\n" );
    H0( "      --crf <integer>         Quality-based VBR (nominal QP)\n" );
    H1( "      --vbv-maxrate <integer> Max local bitrate (kbit/s) [%d]\n", defaults->rc.i_vbv_max_bitrate );
    H0( "      --vbv-bufsize <integer> Enable CBR and set size of the VBV buffer (kbit) [%d]\n", defaults->rc.i_vbv_buffer_size );
    H1( "      --vbv-init <float>      Initial VBV buffer occupancy [%.1f]\n", defaults->rc.f_vbv_buffer_init );
    H1( "      --qpmin <integer>       Set min QP [%d]\n", defaults->rc.i_qp_min );
    H1( "      --qpmax <integer>       Set max QP [%d]\n", defaults->rc.i_qp_max );
    H1( "      --qpstep <integer>      Set max QP step [%d]\n", defaults->rc.i_qp_step );
    H0( "      --ratetol <float>       Allowed variance of average bitrate [%.1f]\n", defaults->rc.f_rate_tolerance );
    H0( "      --ipratio <float>       QP factor between I and P [%.2f]\n", defaults->rc.f_ip_factor );
    H0( "      --pbratio <float>       QP factor between P and B [%.2f]\n", defaults->rc.f_pb_factor );
    H1( "      --chroma-qp-offset <integer>  QP difference between chroma and luma [%d]\n", defaults->analyse.i_chroma_qp_offset );
    H0( "\n" );
    H0( "  -p, --pass <1|2|3>          Enable multipass ratecontrol\n"
        "                                  - 1: First pass, creates stats file\n"
        "                                  - 2: Last pass, does not overwrite stats file\n"
        "                                  - 3: Nth pass, overwrites stats file\n" );
    H0( "      --stats <string>        Filename for 2 pass stats [\"%s\"]\n", defaults->rc.psz_stat_out );
    H1( "      --rceq <string>         Ratecontrol equation [\"%s\"]\n", defaults->rc.psz_rc_eq );
    H0( "      --qcomp <float>         QP curve compression: 0.0 => CBR, 1.0 => CQP [%.2f]\n", defaults->rc.f_qcompress );
    H1( "      --cplxblur <float>      Reduce fluctuations in QP (before curve compression) [%.1f]\n", defaults->rc.f_complexity_blur );
    H1( "      --qblur <float>         Reduce fluctuations in QP (after curve compression) [%.1f]\n", defaults->rc.f_qblur );
    H0( "      --zones <zone0>/<zone1>/...  Tweak the bitrate of some regions of the video\n" );
    H1( "                              Each zone is of the form\n"
        "                                  <start frame>,<end frame>,<option>\n"
        "                                  where <option> is either\n"
        "                                      q=<integer> (force QP)\n"
        "                                  or  b=<float> (bitrate multiplier)\n" );
    H1( "      --qpfile <string>       Force frametypes and QPs\n" );
    H0( "\n" );
    H0( "Analysis:\n" );
    H0( "\n" );
    H0( "  -A, --analyse <string>      Partitions to consider [\"p8x8,b8x8,i8x8,i4x4\"]\n"
        "                                  - p8x8, p4x4, b8x8, i8x8, i4x4\n"
        "                                  - none, all\n"
        "                                  (p4x4 requires p8x8. i8x8 requires --8x8dct.)\n" );
    H0( "      --direct <string>       Direct MV prediction mode [\"%s\"]\n"
        "                                  - none, spatial, temporal, auto\n",
                                       strtable_lookup( x264_direct_pred_names, defaults->analyse.i_direct_mv_pred ) );
    H0( "  -w, --weightb               Weighted prediction for B-frames\n" );
    H0( "      --me <string>           Integer pixel motion estimation method [\"%s\"]\n",
                                       strtable_lookup( x264_motion_est_names, defaults->analyse.i_me_method ) );
    H1( "                                  - dia: diamond search, radius 1 (fast)\n"
        "                                  - hex: hexagonal search, radius 2\n"
        "                                  - umh: uneven multi-hexagon search\n"
        "                                  - esa: exhaustive search (slow)\n" );
    else H0( "                                  - dia, hex, umh\n" );
    H0( "      --merange <integer>     Maximum motion vector search range [%d]\n", defaults->analyse.i_me_range );
    H0( "  -m, --subme <integer>       Subpixel motion estimation and partition\n"
        "                                  decision quality: 1=fast, 7=best. [%d]\n", defaults->analyse.i_subpel_refine );
    H0( "      --b-rdo                 RD based mode decision for B-frames. Requires subme 6.\n" );
    H0( "      --mixed-refs            Decide references on a per partition basis\n" );
    H1( "      --no-chroma-me          Ignore chroma in motion estimation\n" );
    H1( "      --bime                  Jointly optimize both MVs in B-frames\n" );
    H0( "  -8, --8x8dct                Adaptive spatial transform size\n" );
    H0( "  -t, --trellis <integer>     Trellis RD quantization. Requires CABAC. [%d]\n"
        "                                  - 0: disabled\n"
        "                                  - 1: enabled only on the final encode of a MB\n"
        "                                  - 2: enabled on all mode decisions\n", defaults->analyse.i_trellis );
    H0( "      --no-fast-pskip         Disables early SKIP detection on P-frames\n" );
    H0( "      --no-dct-decimate       Disables coefficient thresholding on P-frames\n" );
    H0( "      --nr <integer>          Noise reduction [%d]\n", defaults->analyse.i_noise_reduction );
    H1( "\n" );
    H1( "      --cqm <string>          Preset quant matrices [\"flat\"]\n"
        "                                  - jvt, flat\n" );
    H0( "      --cqmfile <string>      Read custom quant matrices from a JM-compatible file\n" );
    H1( "                                  Overrides any other --cqm* options.\n" );
    H1( "      --cqm4 <list>           Set all 4x4 quant matrices\n"
        "                                  Takes a comma-separated list of 16 integers.\n" );
    H1( "      --cqm8 <list>           Set all 8x8 quant matrices\n"
        "                                  Takes a comma-separated list of 64 integers.\n" );
    H1( "      --cqm4i, --cqm4p, --cqm8i, --cqm8p\n"
        "                              Set both luma and chroma quant matrices\n" );
    H1( "      --cqm4iy, --cqm4ic, --cqm4py, --cqm4pc\n"
        "                              Set individual quant matrices\n" );
    H1( "\n" );
    H1( "Video Usability Info (Annex E):\n" );
    H1( "The VUI settings are not used by the encoder but are merely suggestions to\n" );
    H1( "the playback equipment. See doc/vui.txt for details. Use at your own risk.\n" );
    H1( "\n" );
    H1( "      --overscan <string>     Specify crop overscan setting [\"%s\"]\n"
        "                                  - undef, show, crop\n",
                                       strtable_lookup( x264_overscan_names, defaults->vui.i_overscan ) );
    H1( "      --videoformat <string>  Specify video format [\"%s\"]\n"
        "                                  - component, pal, ntsc, secam, mac, undef\n",
                                       strtable_lookup( x264_vidformat_names, defaults->vui.i_vidformat ) );
    H1( "      --fullrange <string>    Specify full range samples setting [\"%s\"]\n"
        "                                  - off, on\n",
                                       strtable_lookup( x264_fullrange_names, defaults->vui.b_fullrange ) );
    H1( "      --colorprim <string>    Specify color primaries [\"%s\"]\n"
        "                                  - undef, bt709, bt470m, bt470bg\n"
        "                                    smpte170m, smpte240m, film\n",
                                       strtable_lookup( x264_colorprim_names, defaults->vui.i_colorprim ) );
    H1( "      --transfer <string>     Specify transfer characteristics [\"%s\"]\n"
        "                                  - undef, bt709, bt470m, bt470bg, linear,\n"
        "                                    log100, log316, smpte170m, smpte240m\n",
                                       strtable_lookup( x264_transfer_names, defaults->vui.i_transfer ) );
    H1( "      --colormatrix <string>  Specify color matrix setting [\"%s\"]\n"
        "                                  - undef, bt709, fcc, bt470bg\n"
        "                                    smpte170m, smpte240m, GBR, YCgCo\n",
                                       strtable_lookup( x264_colmatrix_names, defaults->vui.i_colmatrix ) );
    H1( "      --chromaloc <integer>   Specify chroma sample location (0 to 5) [%d]\n",
                                       defaults->vui.i_chroma_loc );
    H0( "\n" );
    H0( "Input/Output:\n" );
    H0( "\n" );
    H0( "  -o, --output                Specify output file\n" );
    H0( "      --sar width:height      Specify Sample Aspect Ratio\n" );
    H0( "      --fps <float|rational>  Specify framerate\n" );
    H0( "      --seek <integer>        First frame to encode\n" );
    H0( "      --frames <integer>      Maximum number of frames to encode\n" );
    H0( "      --level <string>        Specify level (as defined by Annex A)\n" );
    H0( "\n" );
    H0( "  -v, --verbose               Print stats for each frame\n" );
    H0( "      --progress              Show a progress indicator while encoding\n" );
    H0( "      --quiet                 Quiet Mode\n" );
    H0( "      --no-psnr               Disable PSNR computation\n" );
    H0( "      --threads <integer>     Parallel encoding (uses slices)\n" );
    H0( "      --thread-input          Run Avisynth in its own thread\n" );
    H1( "      --no-asm                Disable all CPU optimizations\n" );
    H1( "      --visualize             Show MB types overlayed on the encoded video\n" );
    H1( "      --sps-id <integer>      Set SPS and PPS id numbers [%d]\n", defaults->i_sps_id );
    H1( "      --aud                   Use access unit delimiters\n" );
    H0( "\n" );
}

/*****************************************************************************
 * Parse:
 *****************************************************************************/