lqt_x264.c

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/*******************************************************************************
 lqt_x264.c

 libquicktime - A library for reading and writing quicktime/avi/mp4 files.
 http://libquicktime.sourceforge.net

 Copyright (C) 2002 Heroine Virtual Ltd.
 Copyright (C) 2002-2007 Members of the libquicktime project.

 This library is free software; you can redistribute it and/or modify it under
 the terms of the GNU Lesser General Public License as published by the Free
 Software Foundation; either version 2.1 of the License, or (at your option)
 any later version.

 This library is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
 details.

 You should have received a copy of the GNU Lesser General Public License along
 with this library; if not, write to the Free Software Foundation, Inc., 51
 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*******************************************************************************/ 

#include "lqt_private.h"
#include <quicktime/lqt_codecapi.h>
#include <x264.h> // X264_BUILD value
#include "qtx264.h"

static char * fourccs_x264[]  = { "avc1", (char*)0 };

static lqt_parameter_info_static_t encode_parameters_x264[] =
  {
    {
      .name =        "x264_frame_type",
      .real_name =   TRS("Frame-type options"),
      .type =        LQT_PARAMETER_SECTION
    },
    {
      .name =        "x264_i_keyint_max",
      .real_name =   TRS("Maximum GOP size"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 250 },
    },
    {
      .name =        "x264_i_keyint_min",
      .real_name =   TRS("Minimum GOP size"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 25 },
    },
    {
      .name =        "x264_i_scenecut_threshold",
      .real_name =   TRS("Scenecut threshold"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 40 },
      .help_string = TRS("How aggressively to insert extra I-frames")
    },
    {
      .name =        "x264_i_bframe",
      .real_name =   TRS("B-Frames"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 0 },
      .val_min =     { .val_int = 0 },
      .val_max =     { .val_int = 16 },
      .help_string = TRS("Number of B-frames between I and P"),
    },
#if X264_BUILD < 63
    {
      .name =        "x264_b_bframe_adaptive",
      .real_name =   TRS("Adaptive B-frame decision"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 1 },
      .val_min =     { .val_int = 0 },
      .val_max =     { .val_int = 1 },
    },
#else
    {
    .name =        "x264_i_bframe_adaptive",
    .real_name =   TRS("Adaptive B-frame decision"),
    .type =        LQT_PARAMETER_STRINGLIST,
    .val_default = { .val_string = "Fast" },
    .stringlist_options = (char*[]){ TRS("None"),
                                     TRS("Fast"),
                                     TRS("Trellis"),
                                     (char*)0 },
    },
#endif
    {
      .name =        "x264_i_bframe_bias",
      .real_name =   TRS("B-frame bias"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 0 },
      .val_min =     { .val_int =  -90 },
      .val_max =     { .val_int = 100 },
      .help_string = TRS("Influences how often B-frames are used"),
    },
    {
      .name =        "x264_b_bframe_pyramid",
      .real_name =   TRS("B-frame pyramid"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 0 },
      .val_min =     { .val_int = 0 },
      .val_max =     { .val_int = 1 },
      .help_string = TRS("Keep some B-frames as references")
    },
    {
      .name =        "x264_ratecontrol",
      .real_name =   TRS("Ratecontrol"),
      .type =        LQT_PARAMETER_SECTION
    },
    {
      .name =        "x264_i_rc_method",
      .real_name =   TRS("Ratecontrol method"),
      .type =        LQT_PARAMETER_STRINGLIST,
      .val_default = { .val_string = "Constant quality" },
      .stringlist_options = (char*[]){ TRS("Constant quality"),
                                       TRS("Average bitrate"),
                                       TRS("CRF based VBR"),
                                       (char*)0 },
      .help_string = TRS("Ratecontrol method:\n"
                     "Constant quality: Specify a quantizer parameter below\n"
                     "Average bitrate: Specify a bitrate below\n"
                     "CRF based VBR: Specify a rate factor below\n"
                         "Selecting 2-pass encoding will force Average bitrate."),
    },
    {
      .name =        "x264_i_bitrate",
      .real_name =   TRS("Bitrate"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 0 },
      .help_string = TRS("Bitrate in kbit/s. 0 means VBR (recommended)")
    },
#if X264_BUILD < 54
    {
      .name =        "x264_i_rf_constant",
      .real_name =   TRS("Nominal Quantizer parameter"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 26 },
      .val_min =     { .val_int = 0 },
      .val_max =     { .val_int = 51 },
      .help_string = TRS("This selects the nominal quantizer to use (1 to 51). "
                     "Lower values result in better fidelity, but higher "
                         "bitrates. 26 is a good default value. 0 means lossless.")
    },
#else
    {
      .name =        "x264_f_rf_constant",
      .real_name =   TRS("Nominal Quantizer parameter"),
      .type =        LQT_PARAMETER_FLOAT,
      .val_default = { .val_float = 26.0 },
      .val_min =     { .val_float = 0.0 },
      .val_max =     { .val_float = 51.0 },
      .help_string = TRS("This selects the nominal quantizer to use (1 to 51). "
                     "Lower values result in better fidelity, but higher "
                         "bitrates. 26 is a good default value. 0 means lossless.")
    },
#endif
    {
      .name =        "x264_i_qp_constant",
      .real_name =   TRS("Quantizer parameter"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 26 },
      .val_min =     { .val_int = 0 },
      .val_max =     { .val_int = 51 },
      .help_string = TRS("This selects the quantizer to use (1 to 51). Lower "
                     "values result in better fidelity, but higher bitrates. "
                         "26 is a good default value. 0 means lossless.")
    },
{
      .name =        "x264_i_qp_min",
      .real_name =   TRS("Minimum quantizer parameter"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 10 },
      .val_min =     { .val_int = 0 },
      .val_max =     { .val_int = 51 },
      .help_string = TRS("Minimum quantizer parameter")
    },
    {
      .name =        "x264_i_qp_max",
      .real_name =   TRS("Maximum quantizer parameter"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 51 },
      .val_min =     { .val_int = 0 },
      .val_max =     { .val_int = 51 },
      .help_string = TRS("Maximum quantizer parameter")
    },
    {
      .name =        "x264_i_qp_step",
      .real_name =   TRS("Maximum QP step"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 4 },
      .val_min =     { .val_int = 1 },
      .val_max =     { .val_int = 50 },
      .help_string = TRS("Maximum quantizer step")
    },
    {
      .name =        "x264_f_rate_tolerance",
      .real_name =   TRS("Bitrate tolerance"),
      .type =        LQT_PARAMETER_FLOAT,
      .val_default = { .val_float = 1.0 },
      .val_min =     { .val_float = 0.0 },
      .val_max =     { .val_float = 100.0 },
      .num_digits =  1,
      .help_string = TRS("Allowed variance of average bitrate")
    },
    {
      .name =        "x264_i_vbv_max_bitrate",
      .real_name =   TRS("Maximum local bitrate"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 0 },
      .help_string = TRS("Sets a maximum local bitrate in kbits/s.")
    },
    {
      .name =        "x264_i_vbv_buffer_size",
      .real_name =   TRS("VBV Buffer size"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 0 },
      .help_string = TRS("Averaging period for the maximum local bitrate. "
                         "Measured in kbits.")
    },
    {
      .name =        "x264_f_vbv_buffer_init",
      .real_name =   TRS("Initial VBV buffer occupancy"),
      .type =        LQT_PARAMETER_FLOAT,
      .num_digits =  2,
      .val_default = { .val_float = 0.9 },
      .val_min =     { .val_float = 0.0 },
      .val_max =     { .val_float = 1.0 },
      .help_string = TRS("Sets the initial VBV buffer occupancy as a fraction of "
                         "the buffer size.")
    },
    {
      .name =        "x264_f_ip_factor",
      .real_name =   TRS("QP factor between I and P"),
      .type =        LQT_PARAMETER_FLOAT,
      .num_digits =  2,
      .val_default = { .val_float = 1.40 },
    },
    {
      .name =        "x264_f_pb_factor",
      .real_name =   TRS("QP factor between P and B"),
      .type =        LQT_PARAMETER_FLOAT,
      .num_digits =  2,
      .val_default = { .val_float = 1.30 },
    },
    {
      .name =        "x264_partitions",
      .real_name =   TRS("Partitions"),
      .type =        LQT_PARAMETER_SECTION,
    },
    {
      .name =        "x264_analyse_8x8_transform",
      .real_name =   TRS("8x8 transform"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 0 },
      .val_min =     { .val_int = 0 },
      .val_max =     { .val_int = 1 },
    },
    {
      .name =        "x264_analyse_psub16x16",
      .real_name =   TRS("8x16, 16x8 and 8x8 P-frame search"),
      .type =        LQT_PARAMETER_INT,
      .val_default = { .val_int = 1 },
      .val_min =     { .val_int = 0 },
      .val_max =     { .val_int = 1 },