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/*****************************************************************************
 * x264.c: h264 video encoder
 *****************************************************************************
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 * Copyright (C) 2004-2010 the VideoLAN team
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 * $Id$
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 *
 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
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 *          Ilkka Ollakka <ileoo (at)videolan org>
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 *
 * 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
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
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#ifdef HAVE_CONFIG_H
# include "config.h"
#endif

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#include <vlc_common.h>
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#include <vlc_plugin.h>
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#include <vlc_sout.h>
#include <vlc_codec.h>
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#include <vlc_charset.h>
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#include <vlc_cpu.h>
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#include <math.h>
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#ifdef PTW32_STATIC_LIB
#include <pthread.h>
#endif
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#include <x264.h>

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#define SOUT_CFG_PREFIX "sout-x264-"

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/*****************************************************************************
 * Module descriptor
 *****************************************************************************/
static int  Open ( vlc_object_t * );
static void Close( vlc_object_t * );

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/* Frame-type options */
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#define KEYINT_TEXT N_("Maximum GOP size")
#define KEYINT_LONGTEXT N_( "Sets maximum interval between IDR-frames." \
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    "Larger values save bits, thus improving quality for a given bitrate at " \
    "the cost of seeking precision." )
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#define MIN_KEYINT_TEXT N_("Minimum GOP size")
#define MIN_KEYINT_LONGTEXT N_( "Sets minimum interval between IDR-frames. " \
    "In H.264, I-frames do not necessarily bound a closed GOP because it is " \
    "allowable for a P-frame to be predicted from more frames than just the " \
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    "one frame before it (also see reference frame option). Therefore, " \
    "I-frames are not necessarily seekable. IDR-frames restrict subsequent " \
    "P-frames from referring to any frame prior to the IDR-frame. \n" \
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    "If scenecuts appear within this interval, they are still encoded as " \
    "I-frames, but do not start a new GOP." )

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#define OPENGOP_TEXT N_("Use recovery points to close GOPs")
#define OPENGOP_LONGTEXT N_("none: use closed GOPs only\n"\
    "normal: use standard open GOPs\n" \
    "bluray: use Blu-ray compatible open GOPs" )

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#define SCENE_TEXT N_("Extra I-frames aggressivity" )
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#define SCENE_LONGTEXT N_( "Scene-cut detection. Controls how " \
    "aggressively to insert extra I-frames. With small values of " \
    "scenecut, the codec often has " \
    "to force an I-frame when it would exceed keyint. " \
    "Good values of scenecut may find a better location for the " \
    "I-frame. Large values use more I-frames " \
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    "than necessary, thus wasting bits. -1 disables scene-cut detection, so " \
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    "I-frames are inserted only every other keyint frames, which probably " \
    "leads to ugly encoding artifacts. Range 1 to 100." )
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#define BFRAMES_TEXT N_("B-frames between I and P")
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#define BFRAMES_LONGTEXT N_( "Number of consecutive B-frames between I and " \
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    "P-frames. Range 1 to 16." )
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#define B_ADAPT_TEXT N_("Adaptive B-frame decision")
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#define B_ADAPT_LONGTEXT N_( "Force the specified number of " \
    "consecutive B-frames to be used, except possibly before an I-frame." \
    "Range 0 to 2." )
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#define B_BIAS_TEXT N_("Influence (bias) B-frames usage")
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#define B_BIAS_LONGTEXT N_( "Bias the choice to use B-frames. Positive values " \
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    "cause more B-frames, negative values cause less B-frames." )
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#define BPYRAMID_TEXT N_("Keep some B-frames as references")
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#define BPYRAMID_LONGTEXT N_( "Allows B-frames to be used as references for " \
    "predicting other frames. Keeps the middle of 2+ consecutive B-frames " \
    "as a reference, and reorders frame appropriately.\n" \
    " - none: Disabled\n" \
    " - strict: Strictly hierarchical pyramid\n" \
    " - normal: Non-strict (not Blu-ray compatible)\n"\
    )
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#define CABAC_TEXT N_("CABAC")
#define CABAC_LONGTEXT N_( "CABAC (Context-Adaptive Binary Arithmetic "\
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    "Coding). Slightly slows down encoding and decoding, but should save " \
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    "10 to 15% bitrate." )

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#define REF_TEXT N_("Number of reference frames")
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#define REF_LONGTEXT N_( "Number of previous frames used as predictors. " \
    "This is effective in Anime, but seems to make little difference in " \
    "live-action source material. Some decoders are unable to deal with " \
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    "large frameref values. Range 1 to 16." )
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#define NF_TEXT N_("Skip loop filter")
#define NF_LONGTEXT N_( "Deactivate the deblocking loop filter (decreases quality).")
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#define FILTER_TEXT N_("Loop filter AlphaC0 and Beta parameters alpha:beta")
#define FILTER_LONGTEXT N_( "Loop filter AlphaC0 and Beta parameters. " \
    "Range -6 to 6 for both alpha and beta parameters. -6 means light " \
    "filter, 6 means strong.")
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#define LEVEL_TEXT N_("H.264 level")
#define LEVEL_LONGTEXT N_( "Specify H.264 level (as defined by Annex A " \
    "of the standard). Levels are not enforced; it's up to the user to select " \
    "a level compatible with the rest of the encoding options. Range 1 to 5.1 " \
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    "(10 to 51 is also allowed). Set to 0 for letting x264 set level.")
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#define PROFILE_TEXT N_("H.264 profile")
#define PROFILE_LONGTEXT N_("Specify H.264 profile which limits are enforced over" \
        "other settings" )

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/* In order to play an interlaced output stream encoded by x264, a decoder needs
   mbaff support. r570 is using the 'mb' part and not 'aff' yet; so it's really
   'pure-interlaced' mode */
#define INTERLACED_TEXT N_("Interlaced mode")
#define INTERLACED_LONGTEXT N_( "Pure-interlaced mode.")

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#define INTRAREFRESH_TEXT N_("Use Periodic Intra Refresh")
#define INTRAREFRESH_LONGTEXT N_("Use Periodic Intra Refresh instead of IDR frames")

#define MBTREE_TEXT N_("Use mb-tree ratecontrol")
#define MBTREE_LONGTEXT N_("You can disable use of Macroblock-tree on ratecontrol")
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#define SLICE_COUNT N_("Force number of slices per frame")
#define SLICE_COUNT_LONGTEXT N_("Force rectangular slices and is overridden by other slicing optinos")

#define SLICE_MAX_SIZE N_("Limit the size of each slice in bytes")
#define SLICE_MAX_SIZE_LONGTEXT N_("Sets a maximum slice size in bytes, Includes NAL overhead in size")

#define SLICE_MAX_MBS N_("Limit the size of each slice in macroblocks")
#define SLICE_MAX_MBS_LONGTEXT N_("Sets a maximum number of macroblocks per slice")
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/* Ratecontrol */

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#define QP_TEXT N_("Set QP")
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#define QP_LONGTEXT N_( "This selects the quantizer to use. " \
    "Lower values result in better fidelity, but higher bitrates. 26 is a " \
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    "good default value. Range 0 (lossless) to 51." )
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#define CRF_TEXT N_("Quality-based VBR")
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#define CRF_LONGTEXT N_( "1-pass Quality-based VBR. Range 0 to 51." )
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#define QPMIN_TEXT N_("Min QP")
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#define QPMIN_LONGTEXT N_( "Minimum quantizer parameter. 15 to 35 seems to " \
    "be a useful range." )
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#define QPMAX_TEXT N_("Max QP")
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#define QPMAX_LONGTEXT N_( "Maximum quantizer parameter." )

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#define QPSTEP_TEXT N_("Max QP step")
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#define QPSTEP_LONGTEXT N_( "Max QP step between frames.")

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#define RATETOL_TEXT N_("Average bitrate tolerance")
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#define RATETOL_LONGTEXT N_( "Allowed variance in average " \
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    "bitrate (in kbits/s).")
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#define VBV_MAXRATE_TEXT N_("Max local bitrate")
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#define VBV_MAXRATE_LONGTEXT N_( "Sets a maximum local bitrate (in kbits/s).")
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#define VBV_BUFSIZE_TEXT N_("VBV buffer")
#define VBV_BUFSIZE_LONGTEXT N_( "Averaging period for the maximum " \
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    "local bitrate (in kbits).")
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#define VBV_INIT_TEXT N_("Initial VBV buffer occupancy")
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#define VBV_INIT_LONGTEXT N_( "Sets the initial buffer occupancy as a " \
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    "fraction of the buffer size. Range 0.0 to 1.0.")
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#define AQ_MODE_TEXT N_("How AQ distributes bits")
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#define AQ_MODE_LONGTEXT N_("Defines bitdistribution mode for AQ, default 1\n" \
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        " - 0: Disabled\n"\
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        " - 1: Current x264 default mode\n"\
        " - 2: uses log(var)^2 instead of log(var) and attempts to adapt strength per frame")
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#define AQ_STRENGTH_TEXT N_("Strength of AQ")
#define AQ_STRENGTH_LONGTEXT N_("Strength to reduce blocking and blurring in flat\n"\
        "and textured areas, default 1.0 recommented to be between 0..2\n"\
        " - 0.5: weak AQ\n"\
        " - 1.5: strong AQ")

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/* IP Ratio < 1 is technically valid but should never improve quality */
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#define IPRATIO_TEXT N_("QP factor between I and P")
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#define IPRATIO_LONGTEXT N_( "QP factor between I and P. Range 1.0 to 2.0.")
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/* PB ratio < 1 is not valid and breaks ratecontrol */
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#define PBRATIO_TEXT N_("QP factor between P and B")
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#define PBRATIO_LONGTEXT N_( "QP factor between P and B. Range 1.0 to 2.0.")
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#define CHROMA_QP_OFFSET_TEXT N_("QP difference between chroma and luma")
#define CHROMA_QP_OFFSET_LONGTEXT N_( "QP difference between chroma and luma.")

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#define PASS_TEXT N_("Multipass ratecontrol")
#define PASS_LONGTEXT N_( "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" )

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#define QCOMP_TEXT N_("QP curve compression")
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#define QCOMP_LONGTEXT N_( "QP curve compression. Range 0.0 (CBR) to 1.0 (QCP).")
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#define CPLXBLUR_TEXT N_("Reduce fluctuations in QP")
#define CPLXBLUR_LONGTEXT N_( "This reduces the fluctuations in QP " \
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    "before curve compression. Temporally blurs complexity.")
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#define QBLUR_TEXT N_("Reduce fluctuations in QP")
#define QBLUR_LONGTEXT N_( "This reduces the fluctations in QP " \
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    "after curve compression. Temporally blurs quants.")
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/* Analysis */

#define ANALYSE_TEXT N_("Partitions to consider")
#define ANALYSE_LONGTEXT N_( "Partitions to consider in analyse mode: \n" \
    " - none  : \n" \
    " - fast  : i4x4\n" \
    " - normal: i4x4,p8x8,(i8x8)\n" \
    " - slow  : i4x4,p8x8,(i8x8),b8x8\n" \
    " - all   : i4x4,p8x8,(i8x8),b8x8,p4x4\n" \
    "(p4x4 requires p8x8. i8x8 requires 8x8dct).")

#define DIRECT_PRED_TEXT N_("Direct MV prediction mode")
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#define DIRECT_PRED_LONGTEXT N_( "Direct MV prediction mode.")
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#define DIRECT_PRED_SIZE_TEXT N_("Direct prediction size")
#define DIRECT_PRED_SIZE_LONGTEXT N_( "Direct prediction size: "\
    " -  0: 4x4\n" \
    " -  1: 8x8\n" \
    " - -1: smallest possible according to level\n" )

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#define WEIGHTB_TEXT N_("Weighted prediction for B-frames")
#define WEIGHTB_LONGTEXT N_( "Weighted prediction for B-frames.")

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#define WEIGHTP_TEXT N_("Weighted prediction for P-frames")
#define WEIGHTP_LONGTEXT N_(" Weighted prediction for P-frames: "\
    " - 0: Disabled\n"\
    " - 1: Blind offset\n"\
    " - 2: Smart analysis\n" )

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#define ME_TEXT N_("Integer pixel motion estimation method")
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#define ME_LONGTEXT N_( "Selects the motion estimation algorithm: "\
    " - dia: diamond search, radius 1 (fast)\n" \
    " - hex: hexagonal search, radius 2\n" \
    " - umh: uneven multi-hexagon search (better but slower)\n" \
    " - esa: exhaustive search (extremely slow, primarily for testing)\n" \
    " - tesa: hadamard exhaustive search (extremely slow, primarily for testing)\n" )
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#define MERANGE_TEXT N_("Maximum motion vector search range")
#define MERANGE_LONGTEXT N_( "Maximum distance to search for " \
    "motion estimation, measured from predicted position(s). " \
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    "Default of 16 is good for most footage, high motion sequences may " \
    "benefit from settings between 24 and 32. Range 0 to 64." )
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#define MVRANGE_TEXT N_("Maximum motion vector length")
#define MVRANGE_LONGTEXT N_( "Maximum motion vector length in pixels. " \
    "-1 is automatic, based on level." )
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#define MVRANGE_THREAD_TEXT N_("Minimum buffer space between threads")
#define MVRANGE_THREAD_LONGTEXT N_( "Minimum buffer space between threads. " \
    "-1 is automatic, based on number of threads." )
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#define PSY_RD_TEXT N_( "Strength of psychovisual optimization, default is \"1.0:0.0\"")
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#define PSY_RD_LONGTEXT N_( "First parameter controls if RD is on (subme>=6) or off.\n"\
        "Second parameter controls if Trellis is used on psychovisual optimization, " \
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        "default off")

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#define SUBME_TEXT N_("Subpixel motion estimation and partition decision " \
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    "quality")
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#define SUBME_LONGTEXT N_( "This parameter controls quality versus speed " \
    "tradeoffs involved in the motion estimation decision process " \
    "(lower = quicker and higher = better quality). Range 1 to 9." )
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#define B_RDO_TEXT N_("RD based mode decision for B-frames")
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#define B_RDO_LONGTEXT N_( "RD based mode decision for B-frames. This " \
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    "requires subme 6 (or higher).")
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#define MIXED_REFS_TEXT N_("Decide references on a per partition basis")
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#define MIXED_REFS_LONGTEXT N_( "Allows each 8x8 or 16x8 partition to " \
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    "independently select a reference frame, as opposed to only one ref " \
    "per macroblock." )
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#define CHROMA_ME_TEXT N_("Chroma in motion estimation")
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#define CHROMA_ME_LONGTEXT N_( "Chroma ME for subpel and mode decision in " \
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    "P-frames.")
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#define BIME_TEXT N_("Jointly optimize both MVs in B-frames")
#define BIME_LONGTEXT N_( "Joint bidirectional motion refinement.")

#define TRANSFORM_8X8DCT_TEXT N_("Adaptive spatial transform size")
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#define TRANSFORM_8X8DCT_LONGTEXT N_( \
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    "SATD-based decision for 8x8 transform in inter-MBs.")
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#define TRELLIS_TEXT N_("Trellis RD quantization" )
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#define TRELLIS_LONGTEXT N_( "Trellis RD quantization: \n" \
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    " - 0: disabled\n" \
    " - 1: enabled only on the final encode of a MB\n" \
    " - 2: enabled on all mode decisions\n" \
    "This requires CABAC." )
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#define FAST_PSKIP_TEXT N_("Early SKIP detection on P-frames")
#define FAST_PSKIP_LONGTEXT N_( "Early SKIP detection on P-frames.")
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#define DCT_DECIMATE_TEXT N_("Coefficient thresholding on P-frames")
#define DCT_DECIMATE_LONGTEXT N_( "Coefficient thresholding on P-frames." \
    "Eliminate dct blocks containing only a small single coefficient.")

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#define PSY_TEXT N_("Use Psy-optimizations")
#define PSY_LONGTEXT N_("Use all visual optimizations that can worsen both PSNR and SSIM")

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/* Noise reduction 1 is too weak to measure, suggest at least 10 */
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#define NR_TEXT N_("Noise reduction")
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#define NR_LONGTEXT N_( "Dct-domain noise reduction. Adaptive pseudo-deadzone. " \
    "10 to 1000 seems to be a useful range." )
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#define DEADZONE_INTER_TEXT N_("Inter luma quantization deadzone")
#define DEADZONE_INTER_LONGTEXT N_( "Set the size of the inter luma quantization deadzone. " \
    "Range 0 to 32." )

#define DEADZONE_INTRA_TEXT N_("Intra luma quantization deadzone")
#define DEADZONE_INTRA_LONGTEXT N_( "Set the size of the intra luma quantization deadzone. " \
    "Range 0 to 32." )

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/* Input/Output */
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#define NON_DETERMINISTIC_TEXT N_("Non-deterministic optimizations when threaded")
#define NON_DETERMINISTIC_LONGTEXT N_( "Slightly improve quality of SMP, " \
    "at the cost of repeatability.")

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#define ASM_TEXT N_("CPU optimizations")
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#define ASM_LONGTEXT N_( "Use assembler CPU optimizations.")
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#define STATS_TEXT N_("Filename for 2 pass stats file")
#define STATS_LONGTEXT N_( "Filename for 2 pass stats file for multi-pass encoding.")
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#define PSNR_TEXT N_("PSNR computation")
#define PSNR_LONGTEXT N_( "Compute and print PSNR stats. This has no effect on " \
    "the actual encoding quality." )

#define SSIM_TEXT N_("SSIM computation")
#define SSIM_LONGTEXT N_( "Compute and print SSIM stats. This has no effect on " \
    "the actual encoding quality." )
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#define QUIET_TEXT N_("Quiet mode")
#define QUIET_LONGTEXT N_( "Quiet mode.")

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#define VERBOSE_TEXT N_("Statistics")
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#define VERBOSE_LONGTEXT N_( "Print stats for each frame.")

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#define SPS_ID_TEXT N_("SPS and PPS id numbers")
#define SPS_ID_LONGTEXT N_( "Set SPS and PPS id numbers to allow concatenating " \
    "streams with different settings.")

#define AUD_TEXT N_("Access unit delimiters")
#define AUD_LONGTEXT N_( "Generate access unit delimiter NAL units.")

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#define LOOKAHEAD_TEXT N_("Framecount to use on frametype lookahead")
#define LOOKAHEAD_LONGTEXT N_("Framecount to use on frametype lookahead. " \
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    "Currently default can cause sync-issues on unmuxable output, like rtsp-output without ts-mux" )
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#define HRD_TEXT N_("HRD-timing information")
#define HRD_LONGTEXT N_("HRD-timing information")

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#define TUNE_TEXT N_("Tune the settings for a particular type of source or situation. " \
     "Overridden by user settings." )
#define PRESET_TEXT N_("Use preset as default settings. Overridden by user settings." )

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static const char *const enc_me_list[] =
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  { "dia", "hex", "umh", "esa", "tesa" };
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static const char *const enc_me_list_text[] =
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  { N_("dia"), N_("hex"), N_("umh"), N_("esa"), N_("tesa") };

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static const char *const profile_list[] =
  { "baseline", "main", "high" };

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static const char *const bpyramid_list[] =
  { "none", "strict", "normal" };

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static const char *const enc_analyse_list[] =
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  { "none", "fast", "normal", "slow", "all" };
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static const char *const enc_analyse_list_text[] =
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  { N_("none"), N_("fast"), N_("normal"), N_("slow"), N_("all") };
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static const char *const direct_pred_list[] =
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  { "none", "spatial", "temporal", "auto" };
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static const char *const direct_pred_list_text[] =
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  { N_("none"), N_("spatial"), N_("temporal"), N_("auto") };
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vlc_module_begin ()
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    set_description( N_("H.264/MPEG4 AVC encoder (x264)"))
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    set_capability( "encoder", 200 )
    set_callbacks( Open, Close )
    set_category( CAT_INPUT )
    set_subcategory( SUBCAT_INPUT_VCODEC )
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/* Frame-type options */

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    add_integer( SOUT_CFG_PREFIX "keyint", 250, KEYINT_TEXT,
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                 KEYINT_LONGTEXT, false )
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    add_integer( SOUT_CFG_PREFIX "min-keyint", 25, MIN_KEYINT_TEXT,
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                 MIN_KEYINT_LONGTEXT, false )
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#if X264_BUILD >= 102
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    add_string( SOUT_CFG_PREFIX "opengop", "none", OPENGOP_TEXT,
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               OPENGOP_LONGTEXT,false )
        change_string_list( x264_open_gop_names, x264_open_gop_names, 0 );
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#endif
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    add_integer( SOUT_CFG_PREFIX "scenecut", 40, SCENE_TEXT,
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                 SCENE_LONGTEXT, false )
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        change_integer_range( -1, 100 )
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    add_obsolete_bool( SOUT_CFG_PREFIX "pre-scenecut" )
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    add_integer( SOUT_CFG_PREFIX "bframes", 3, BFRAMES_TEXT,
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                 BFRAMES_LONGTEXT, false )
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        change_integer_range( 0, 16 )
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    add_integer( SOUT_CFG_PREFIX "b-adapt", 1, B_ADAPT_TEXT,
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                 B_ADAPT_LONGTEXT, false )
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        change_integer_range( 0, 2 )
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    add_integer( SOUT_CFG_PREFIX "b-bias", 0, B_BIAS_TEXT,
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                 B_BIAS_LONGTEXT, false )
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        change_integer_range( -100, 100 )
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#if X264_BUILD >= 87
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    add_string( SOUT_CFG_PREFIX "bpyramid", "normal", BPYRAMID_TEXT,
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              BPYRAMID_LONGTEXT, false )
#else
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    add_string( SOUT_CFG_PREFIX "bpyramid", "none", BPYRAMID_TEXT,
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              BPYRAMID_LONGTEXT, false )
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#endif
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        change_string_list( bpyramid_list, bpyramid_list, 0 );
458

459
    add_bool( SOUT_CFG_PREFIX "cabac", true, CABAC_TEXT, CABAC_LONGTEXT,
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              false )
461

462
    add_integer( SOUT_CFG_PREFIX "ref", 3, REF_TEXT,
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                 REF_LONGTEXT, false )
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        change_integer_range( 1, 16 )
465

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    add_bool( SOUT_CFG_PREFIX "nf", false, NF_TEXT,
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              NF_LONGTEXT, false )
468

469
    add_string( SOUT_CFG_PREFIX "deblock", "0:0", FILTER_TEXT,
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                 FILTER_LONGTEXT, false )
471

472
    add_string( SOUT_CFG_PREFIX "psy-rd", "1.0:0.0", PSY_RD_TEXT,
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                PSY_RD_LONGTEXT, false )

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    add_bool( SOUT_CFG_PREFIX "psy", true, PSY_TEXT, PSY_LONGTEXT, false )
476

477
    add_string( SOUT_CFG_PREFIX "level", "0", LEVEL_TEXT,
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               LEVEL_LONGTEXT, false )
479

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    add_string( SOUT_CFG_PREFIX "profile", "high", PROFILE_TEXT,
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               PROFILE_LONGTEXT, false )
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        change_string_list( x264_profile_names, x264_profile_names, 0 );
483

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    add_bool( SOUT_CFG_PREFIX "interlaced", false, INTERLACED_TEXT, INTERLACED_LONGTEXT,
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              false )
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    add_integer( SOUT_CFG_PREFIX "slices", 0, SLICE_COUNT, SLICE_COUNT_LONGTEXT, false )
    add_integer( SOUT_CFG_PREFIX "slice-max-size", 0, SLICE_MAX_SIZE, SLICE_MAX_SIZE_LONGTEXT, false )
    add_integer( SOUT_CFG_PREFIX "slice-max-mbs", 0, SLICE_MAX_MBS, SLICE_MAX_MBS_LONGTEXT, false )
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#if X264_BUILD >= 89
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    add_string( SOUT_CFG_PREFIX "hrd", "none", HRD_TEXT, HRD_LONGTEXT, false )
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        change_string_list( x264_nal_hrd_names, x264_nal_hrd_names, 0 );
#endif

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/* Ratecontrol */

499
    add_integer( SOUT_CFG_PREFIX "qp", -1, QP_TEXT, QP_LONGTEXT,
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                 false )
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        change_integer_range( -1, 51 ) /* QP 0 -> lossless encoding */
502

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    add_integer( SOUT_CFG_PREFIX "crf", 23, CRF_TEXT,
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                 CRF_LONGTEXT, false )
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        change_integer_range( 0, 51 )
506

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    add_integer( SOUT_CFG_PREFIX "qpmin", 10, QPMIN_TEXT,
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                 QPMIN_LONGTEXT, false )
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        change_integer_range( 0, 51 )
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    add_integer( SOUT_CFG_PREFIX "qpmax", 51, QPMAX_TEXT,
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                 QPMAX_LONGTEXT, false )
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        change_integer_range( 0, 51 )
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    add_integer( SOUT_CFG_PREFIX "qpstep", 4, QPSTEP_TEXT,
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                 QPSTEP_LONGTEXT, false )
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        change_integer_range( 0, 51 )
518

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    add_float( SOUT_CFG_PREFIX "ratetol", 1.0, RATETOL_TEXT,
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               RATETOL_LONGTEXT, false )
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        change_float_range( 0, 100 )
522

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    add_integer( SOUT_CFG_PREFIX "vbv-maxrate", 0, VBV_MAXRATE_TEXT,
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                 VBV_MAXRATE_LONGTEXT, false )
525

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    add_integer( SOUT_CFG_PREFIX "vbv-bufsize", 0, VBV_BUFSIZE_TEXT,
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                 VBV_BUFSIZE_LONGTEXT, false )
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    add_float( SOUT_CFG_PREFIX "vbv-init", 0.9, VBV_INIT_TEXT,
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               VBV_INIT_LONGTEXT, false )
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        change_float_range( 0, 1 )
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    add_float( SOUT_CFG_PREFIX "ipratio", 1.40, IPRATIO_TEXT,
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               IPRATIO_LONGTEXT, false )
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        change_float_range( 1, 2 )
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    add_float( SOUT_CFG_PREFIX "pbratio", 1.30, PBRATIO_TEXT,
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               PBRATIO_LONGTEXT, false )
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        change_float_range( 1, 2 )
540

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    add_integer( SOUT_CFG_PREFIX "chroma-qp-offset", 0, CHROMA_QP_OFFSET_TEXT,
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                 CHROMA_QP_OFFSET_LONGTEXT, false )
543

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    add_integer( SOUT_CFG_PREFIX "pass", 0, PASS_TEXT,
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                 PASS_LONGTEXT, false )
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        change_integer_range( 0, 3 )
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    add_float( SOUT_CFG_PREFIX "qcomp", 0.60, QCOMP_TEXT,
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               QCOMP_LONGTEXT, false )
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        change_float_range( 0, 1 )
551

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    add_float( SOUT_CFG_PREFIX "cplxblur", 20.0, CPLXBLUR_TEXT,
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               CPLXBLUR_LONGTEXT, false )
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    add_float( SOUT_CFG_PREFIX "qblur", 0.5, QBLUR_TEXT,
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               QBLUR_LONGTEXT, false )
557

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    add_integer( SOUT_CFG_PREFIX "aq-mode", X264_AQ_VARIANCE, AQ_MODE_TEXT,
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                 AQ_MODE_LONGTEXT, false )
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         change_integer_range( 0, 2 )
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    add_float( SOUT_CFG_PREFIX "aq-strength", 1.0, AQ_STRENGTH_TEXT,
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               AQ_STRENGTH_LONGTEXT, false )
563

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/* Analysis */

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    /* x264 partitions = none (default). set at least "normal" mode. */
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    add_string( SOUT_CFG_PREFIX "partitions", "normal", ANALYSE_TEXT,
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                ANALYSE_LONGTEXT, false )
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        change_string_list( enc_analyse_list, enc_analyse_list_text, 0 );

571
    add_string( SOUT_CFG_PREFIX "direct", "spatial", DIRECT_PRED_TEXT,
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                DIRECT_PRED_LONGTEXT, false )
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        change_string_list( direct_pred_list, direct_pred_list_text, 0 );

575
    add_integer( SOUT_CFG_PREFIX "direct-8x8", 1, DIRECT_PRED_SIZE_TEXT,
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                 DIRECT_PRED_SIZE_LONGTEXT, false )
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        change_integer_range( -1, 1 )
578

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    add_bool( SOUT_CFG_PREFIX "weightb", true, WEIGHTB_TEXT,
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              WEIGHTB_LONGTEXT, false )
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    add_integer( SOUT_CFG_PREFIX "weightp", 2, WEIGHTP_TEXT,
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              WEIGHTP_LONGTEXT, false )
        change_integer_range( 0, 2 )

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    add_string( SOUT_CFG_PREFIX "me", "hex", ME_TEXT,
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                ME_LONGTEXT, false )
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        change_string_list( enc_me_list, enc_me_list_text, 0 );

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    add_integer( SOUT_CFG_PREFIX "merange", 16, MERANGE_TEXT,
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                 MERANGE_LONGTEXT, false )
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        change_integer_range( 1, 64 )
593

594
    add_integer( SOUT_CFG_PREFIX "mvrange", -1, MVRANGE_TEXT,
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                 MVRANGE_LONGTEXT, false )
596

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    add_integer( SOUT_CFG_PREFIX "mvrange-thread", -1, MVRANGE_THREAD_TEXT,
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                 MVRANGE_THREAD_LONGTEXT, false )
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    add_integer( SOUT_CFG_PREFIX "subme", 7, SUBME_TEXT,
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                 SUBME_LONGTEXT, false )
602

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    add_obsolete_bool( SOUT_CFG_PREFIX "b-rdo" )
604

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    add_bool( SOUT_CFG_PREFIX "mixed-refs", true, MIXED_REFS_TEXT,
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              MIXED_REFS_LONGTEXT, false )
607

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    add_bool( SOUT_CFG_PREFIX "chroma-me", true, CHROMA_ME_TEXT,
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              CHROMA_ME_LONGTEXT, false )
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    add_obsolete_bool( SOUT_CFG_PREFIX "bime" )
612

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    add_bool( SOUT_CFG_PREFIX "8x8dct", true, TRANSFORM_8X8DCT_TEXT,
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              TRANSFORM_8X8DCT_LONGTEXT, false )
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    add_integer( SOUT_CFG_PREFIX "trellis", 1, TRELLIS_TEXT,
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                 TRELLIS_LONGTEXT, false )
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        change_integer_range( 0, 2 )
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    add_integer( SOUT_CFG_PREFIX "lookahead", 40, LOOKAHEAD_TEXT,
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                 LOOKAHEAD_LONGTEXT, false )
        change_integer_range( 0, 60 )

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    add_bool( SOUT_CFG_PREFIX "intra-refresh", false, INTRAREFRESH_TEXT,
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              INTRAREFRESH_LONGTEXT, false )

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    add_bool( SOUT_CFG_PREFIX "mbtree", true, MBTREE_TEXT, MBTREE_LONGTEXT, false )
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    add_bool( SOUT_CFG_PREFIX "fast-pskip", true, FAST_PSKIP_TEXT,
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              FAST_PSKIP_LONGTEXT, false )
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    add_bool( SOUT_CFG_PREFIX "dct-decimate", true, DCT_DECIMATE_TEXT,
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              DCT_DECIMATE_LONGTEXT, false )
634

635
    add_integer( SOUT_CFG_PREFIX "nr", 0, NR_TEXT,
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                 NR_LONGTEXT, false )
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        change_integer_range( 0, 1000 )
638

639
    add_integer( SOUT_CFG_PREFIX "deadzone-inter", 21, DEADZONE_INTER_TEXT,
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                 DEADZONE_INTRA_LONGTEXT, false )
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        change_integer_range( 0, 32 )
642

643
    add_integer( SOUT_CFG_PREFIX "deadzone-intra", 11, DEADZONE_INTRA_TEXT,
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                 DEADZONE_INTRA_LONGTEXT, false )
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        change_integer_range( 0, 32 )
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/* Input/Output */

649
    add_bool( SOUT_CFG_PREFIX "non-deterministic", false, NON_DETERMINISTIC_TEXT,
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              NON_DETERMINISTIC_LONGTEXT, false )
651

652
    add_bool( SOUT_CFG_PREFIX "asm", true, ASM_TEXT,
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              ASM_LONGTEXT, false )
654

655
    /* x264 psnr = 1 (default). disable PSNR computation for speed. */
656
    add_bool( SOUT_CFG_PREFIX "psnr", false, PSNR_TEXT,
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              PSNR_LONGTEXT, false )
658

659
    /* x264 ssim = 1 (default). disable SSIM computation for speed. */
660
    add_bool( SOUT_CFG_PREFIX "ssim", false, SSIM_TEXT,
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              SSIM_LONGTEXT, false )
662

663
    add_bool( SOUT_CFG_PREFIX "quiet", false, QUIET_TEXT,
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              QUIET_LONGTEXT, false )
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    add_integer( SOUT_CFG_PREFIX "sps-id", 0, SPS_ID_TEXT,
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                 SPS_ID_LONGTEXT, false )
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    add_bool( SOUT_CFG_PREFIX "aud", false, AUD_TEXT,
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              AUD_LONGTEXT, false )
671

672
    add_bool( SOUT_CFG_PREFIX "verbose", false, VERBOSE_TEXT,
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              VERBOSE_LONGTEXT, false )
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    add_string( SOUT_CFG_PREFIX "stats", "x264_2pass.log", STATS_TEXT,
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                STATS_LONGTEXT, false )
677

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    add_string( SOUT_CFG_PREFIX "preset", NULL , PRESET_TEXT , PRESET_TEXT, false )
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        change_string_list( x264_preset_names, x264_preset_names, 0 );
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    add_string( SOUT_CFG_PREFIX "tune", NULL , TUNE_TEXT, TUNE_TEXT, false )
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        change_string_list( x264_tune_names, x264_tune_names, 0 );
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vlc_module_end ()
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/*****************************************************************************
 * Local prototypes
 *****************************************************************************/
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static const char *const ppsz_sout_options[] = {
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    "8x8dct", "asm", "aud", "bframes", "bime", "bpyramid",
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    "b-adapt", "b-bias", "b-rdo", "cabac", "chroma-me", "chroma-qp-offset",
    "cplxblur", "crf", "dct-decimate", "deadzone-inter", "deadzone-intra",
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    "deblock", "direct", "direct-8x8", "fast-pskip",
    "interlaced", "ipratio", "keyint", "level",
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    "me", "merange", "min-keyint", "mixed-refs", "mvrange", "mvrange-thread",
    "nf", "non-deterministic", "nr", "partitions", "pass", "pbratio",
    "pre-scenecut", "psnr", "qblur", "qp", "qcomp", "qpstep", "qpmax",
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    "qpmin", "quiet", "ratetol", "ref", "scenecut",
    "sps-id", "ssim", "stats", "subme", "trellis",
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    "verbose", "vbv-bufsize", "vbv-init", "vbv-maxrate", "weightb", "weightp",
    "aq-mode", "aq-strength", "psy-rd", "psy", "profile", "lookahead", "slices",
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    "slice-max-size", "slice-max-mbs", "intra-refresh", "mbtree", "hrd",
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    "tune","preset", "opengop", NULL
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};

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static block_t *Encode( encoder_t *, picture_t * );

struct encoder_sys_t
{
    x264_t          *h;
    x264_param_t    param;

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    mtime_t         i_initial_delay;
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    char            *psz_stat_name;
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};

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#ifdef PTW32_STATIC_LIB
static vlc_mutex_t pthread_win32_mutex = VLC_STATIC_MUTEX;
static int pthread_win32_count = 0;
#endif

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/*****************************************************************************
 * Open: probe the encoder
 *****************************************************************************/
static int  Open ( vlc_object_t *p_this )
{
    encoder_t     *p_enc = (encoder_t *)p_this;
    encoder_sys_t *p_sys;
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    int i_val;
    char *psz_val;
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    int i_qmin = 0, i_qmax = 0;
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    x264_nal_t    *nal;
    int i, i_nal;
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    if( p_enc->fmt_out.i_codec != VLC_CODEC_H264 &&
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        !p_enc->b_force )
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    {
        return VLC_EGENERIC;
    }
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    /* X264_POINTVER or X264_VERSION are not available */
    msg_Dbg ( p_enc, "version x264 0.%d.X", X264_BUILD );
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    config_ChainParse( p_enc, SOUT_CFG_PREFIX, ppsz_sout_options, p_enc->p_cfg );
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    p_enc->fmt_out.i_cat = VIDEO_ES;
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    p_enc->fmt_out.i_codec = VLC_CODEC_H264;
    p_enc->fmt_in.i_codec = VLC_CODEC_I420;
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    p_enc->pf_encode_video = Encode;
    p_enc->pf_encode_audio = NULL;
    p_enc->p_sys = p_sys = malloc( sizeof( encoder_sys_t ) );
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    if( !p_sys )
        return VLC_ENOMEM;
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    p_sys->i_initial_delay = 0;
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    p_sys->psz_stat_name = NULL;
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    x264_param_default( &p_sys->param );
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    char *psz_preset = var_GetString( p_enc, SOUT_CFG_PREFIX  "preset" );
    char *psz_tune = var_GetString( p_enc, SOUT_CFG_PREFIX  "tune" );
    if( *psz_preset == '\0' )
    {
        free(psz_preset);
        psz_preset = NULL;
    }
    x264_param_default_preset( &p_sys->param, psz_preset, psz_tune );
    free( psz_preset );
    free( psz_tune );
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    p_sys->param.i_width  = p_enc->fmt_in.video.i_width;
    p_sys->param.i_height = p_enc->fmt_in.video.i_height;
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    if( fabs(var_GetFloat( p_enc, SOUT_CFG_PREFIX "qcomp" ) - 0.60) > 0.005 )
       p_sys->param.rc.f_qcompress = var_GetFloat( p_enc, SOUT_CFG_PREFIX "qcomp" );
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    /* transcode-default bitrate is 0,
     * set more to ABR if user specifies bitrate */
    if( p_enc->fmt_out.i_bitrate > 0 )
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    {
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        p_sys->param.rc.i_bitrate = p_enc->fmt_out.i_bitrate / 1000;
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        p_sys->param.rc.i_rc_method = X264_RC_ABR;
    }
    else /* Set default to CRF */
    {
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        i_val = var_GetInteger( p_enc, SOUT_CFG_PREFIX "crf" );
        if( i_val > 0 && i_val <= 51 )
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        {
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            p_sys->param.rc.f_rf_constant = i_val;
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            p_sys->param.rc.i_rc_method = X264_RC_CRF;
        }
    }
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    i_val = var_GetInteger( p_enc, SOUT_CFG_PREFIX "qpstep" );
    if( i_val >= 0 && i_val <= 51 ) p_sys->param.rc.i_qp_step = i_val;

    i_val = var_GetInteger( p_enc, SOUT_CFG_PREFIX "qpmin" );
    if( i_val >= 0 && i_val <= 51 )
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    {
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        i_qmin = i_val;
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        p_sys->param.rc.i_qp_min = i_qmin;
    }
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    i_val = var_GetInteger( p_enc, SOUT_CFG_PREFIX "qpmax" );
    if( i_val >= 0 && i_val <= 51 )
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    {
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        i_qmax = i_val;
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        p_sys->param.rc.i_qp_max = i_qmax;
    }
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    i_val = var_GetInteger( p_enc, SOUT_CFG_PREFIX "qp" );
    if( i_val >= 0 && i_val <= 51 )
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    {
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        if( i_qmin > i_val ) i_qmin = i_val;
        if( i_qmax < i_val ) i_qmax = i_val;
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        /* User defined QP-value, so change ratecontrol method */
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        p_sys->param.rc.i_rc_method = X264_RC_CQP;
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        p_sys->param.rc.i_qp_constant = i_val;
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        p_sys->param.rc.i_qp_min = i_qmin;
        p_sys->param.rc.i_qp_max = i_qmax;
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    }
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