www.pudn.com > x264_2007.rar > common.c
/*****************************************************************************
* common.c: h264 library
*****************************************************************************
* Copyright (C) 2003 Laurent Aimar
* $Id: common.c,v 1.1 2004/06/03 19:27:06 fenrir Exp $
*
* Authors: Laurent Aimar
*
* 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.
*****************************************************************************/
#include
#ifdef HAVE_MALLOC_H
#include
#endif
#include "common.h"
#include "cpu.h"
static void x264_log_default( void *, int, const char *, va_list );
/****************************************************************************
* x264_param_default:
****************************************************************************/
void x264_param_default( x264_param_t *param )
{
/* */
memset( param, 0, sizeof( x264_param_t ) );
/* CPU autodetect */
param->cpu = x264_cpu_detect();
param->i_threads = 1;
param->b_deterministic = 1;
/* Video properties */
param->i_csp = X264_CSP_I420;
param->i_width = 0;
param->i_height = 0;
param->vui.i_sar_width = 0;
param->vui.i_sar_height= 0;
param->vui.i_overscan = 0; /* undef */
param->vui.i_vidformat = 5; /* undef */
param->vui.b_fullrange = 0; /* off */
param->vui.i_colorprim = 2; /* undef */
param->vui.i_transfer = 2; /* undef */
param->vui.i_colmatrix = 2; /* undef */
param->vui.i_chroma_loc= 0; /* left center */
param->i_fps_num = 25;
param->i_fps_den = 1;
param->i_level_idc = 51; /* as close to "unrestricted" as we can get */
/* Encoder parameters */
param->i_frame_reference = 1;
param->i_keyint_max = 250;
param->i_keyint_min = 25;
param->i_bframe = 0;
param->i_scenecut_threshold = 40;
param->b_bframe_adaptive = 1;
param->i_bframe_bias = 0;
param->b_bframe_pyramid = 0;
param->b_deblocking_filter = 1;
param->i_deblocking_filter_alphac0 = 0;
param->i_deblocking_filter_beta = 0;
param->b_cabac = 1;
param->i_cabac_init_idc = 0;
param->rc.i_rc_method = X264_RC_NONE;
param->rc.i_bitrate = 0;
param->rc.f_rate_tolerance = 1.0;
param->rc.i_vbv_max_bitrate = 0;
param->rc.i_vbv_buffer_size = 0;
param->rc.f_vbv_buffer_init = 0.9;
param->rc.i_qp_constant = 26;
param->rc.f_rf_constant = 0;
param->rc.i_qp_min = 10;
param->rc.i_qp_max = 51;
param->rc.i_qp_step = 4;
param->rc.f_ip_factor = 1.4;
param->rc.f_pb_factor = 1.3;
param->rc.b_stat_write = 0;
param->rc.psz_stat_out = "x264_2pass.log";
param->rc.b_stat_read = 0;
param->rc.psz_stat_in = "x264_2pass.log";
param->rc.psz_rc_eq = "blurCplx^(1-qComp)";
param->rc.f_qcompress = 0.6;
param->rc.f_qblur = 0.5;
param->rc.f_complexity_blur = 20;
param->rc.i_zones = 0;
/* Log */
param->pf_log = x264_log_default;
param->p_log_private = NULL;
param->i_log_level = X264_LOG_INFO;
/* */
param->analyse.intra = X264_ANALYSE_I4x4 | X264_ANALYSE_I8x8;
param->analyse.inter = X264_ANALYSE_I4x4 | X264_ANALYSE_I8x8
| X264_ANALYSE_PSUB16x16 | X264_ANALYSE_BSUB16x16;
param->analyse.i_direct_mv_pred = X264_DIRECT_PRED_SPATIAL;
param->analyse.i_me_method = X264_ME_HEX;
param->analyse.i_me_range = 16;
param->analyse.i_subpel_refine = 5;
param->analyse.b_chroma_me = 1;
param->analyse.i_mv_range_thread = -1;
param->analyse.i_mv_range = -1; // set from level_idc
param->analyse.i_direct_8x8_inference = -1; // set from level_idc
param->analyse.i_chroma_qp_offset = 0;
param->analyse.b_fast_pskip = 1;
param->analyse.b_dct_decimate = 1;
param->analyse.i_luma_deadzone[0] = 21;
param->analyse.i_luma_deadzone[1] = 11;
param->analyse.b_psnr = 1;
param->analyse.b_ssim = 1;
param->i_cqm_preset = X264_CQM_FLAT;
memset( param->cqm_4iy, 16, 16 );
memset( param->cqm_4ic, 16, 16 );
memset( param->cqm_4py, 16, 16 );
memset( param->cqm_4pc, 16, 16 );
memset( param->cqm_8iy, 16, 64 );
memset( param->cqm_8py, 16, 64 );
param->b_repeat_headers = 1;
param->b_aud = 0;
}
static int parse_enum( const char *arg, const char * const *names, int *dst )
{
int i;
for( i = 0; names[i]; i++ )
if( !strcmp( arg, names[i] ) )
{
*dst = i;
return 0;
}
return -1;
}
static int parse_cqm( const char *str, uint8_t *cqm, int length )
{
int i = 0;
do {
int coef;
if( !sscanf( str, "%d", &coef ) || coef < 1 || coef > 255 )
return -1;
cqm[i++] = coef;
} while( i < length && (str = strchr( str, ',' )) && str++ );
return (i == length) ? 0 : -1;
}
static int x264_atobool( const char *str, int *b_error )
{
if( !strcmp(str, "1") ||
!strcmp(str, "true") ||
!strcmp(str, "yes") )
return 1;
if( !strcmp(str, "0") ||
!strcmp(str, "false") ||
!strcmp(str, "no") )
return 0;
*b_error = 1;
return 0;
}
static int x264_atoi( const char *str, int *b_error )
{
char *end;
int v = strtol( str, &end, 0 );
if( end == str || *end != '\0' )
*b_error = 1;
return v;
}
static double x264_atof( const char *str, int *b_error )
{
char *end;
double v = strtod( str, &end );
if( end == str || *end != '\0' )
*b_error = 1;
return v;
}
#define atobool(str) ( name_was_bool = 1, x264_atobool( str, &b_error ) )
#define atoi(str) x264_atoi( str, &b_error )
#define atof(str) x264_atof( str, &b_error )
int x264_param_parse( x264_param_t *p, const char *name, const char *value )
{
char *name_buf = NULL;
int b_error = 0;
int name_was_bool;
int value_was_null = !value;
int i;
if( !name )
return X264_PARAM_BAD_NAME;
if( !value )
value = "true";
if( value[0] == '=' )
value++;
if( strchr( name, '_' ) ) // s/_/-/g
{
char *p;
name_buf = strdup(name);
while( (p = strchr( name_buf, '_' )) )
*p = '-';
name = name_buf;
}
if( (!strncmp( name, "no-", 3 ) && (i = 3)) ||
(!strncmp( name, "no", 2 ) && (i = 2)) )
{
name += i;
value = atobool(value) ? "false" : "true";
}
name_was_bool = 0;
#define OPT(STR) else if( !strcmp( name, STR ) )
#define OPT2(STR0, STR1) else if( !strcmp( name, STR0 ) || !strcmp( name, STR1 ) )
if(0);
OPT("asm")
p->cpu = atobool(value) ? x264_cpu_detect() : 0;
OPT("threads")
{
if( !strcmp(value, "auto") )
p->i_threads = 0;
else
p->i_threads = atoi(value);
}
OPT2("deterministic", "n-deterministic")
p->b_deterministic = atobool(value);
OPT2("level", "level-idc")
{
if( atof(value) < 6 )
p->i_level_idc = (int)(10*atof(value)+.5);
else
p->i_level_idc = atoi(value);
}
OPT("sar")
{
b_error = ( 2 != sscanf( value, "%d:%d", &p->vui.i_sar_width, &p->vui.i_sar_height ) &&
2 != sscanf( value, "%d/%d", &p->vui.i_sar_width, &p->vui.i_sar_height ) );
}
OPT("overscan")
b_error |= parse_enum( value, x264_overscan_names, &p->vui.i_overscan );
OPT("videoformat")
b_error |= parse_enum( value, x264_vidformat_names, &p->vui.i_vidformat );
OPT("fullrange")
b_error |= parse_enum( value, x264_fullrange_names, &p->vui.b_fullrange );
OPT("colorprim")
b_error |= parse_enum( value, x264_colorprim_names, &p->vui.i_colorprim );
OPT("transfer")
b_error |= parse_enum( value, x264_transfer_names, &p->vui.i_transfer );
OPT("colormatrix")
b_error |= parse_enum( value, x264_colmatrix_names, &p->vui.i_colmatrix );
OPT("chromaloc")
{
p->vui.i_chroma_loc = atoi(value);
b_error = ( p->vui.i_chroma_loc < 0 || p->vui.i_chroma_loc > 5 );
}
OPT("fps")
{
if( sscanf( value, "%d/%d", &p->i_fps_num, &p->i_fps_den ) == 2 )
;
else
{
float fps = atof(value);
p->i_fps_num = (int)(fps * 1000 + .5);
p->i_fps_den = 1000;
}
}
OPT2("ref", "frameref")
p->i_frame_reference = atoi(value);
OPT("keyint")
{
p->i_keyint_max = atoi(value);
if( p->i_keyint_min > p->i_keyint_max )
p->i_keyint_min = p->i_keyint_max;
}
OPT2("min-keyint", "keyint-min")
{
p->i_keyint_min = atoi(value);
if( p->i_keyint_max < p->i_keyint_min )
p->i_keyint_max = p->i_keyint_min;
}
OPT("scenecut")
p->i_scenecut_threshold = atoi(value);
OPT("pre-scenecut")
p->b_pre_scenecut = atobool(value);
OPT("bframes")
p->i_bframe = atoi(value);
OPT("b-adapt")
p->b_bframe_adaptive = atobool(value);
OPT("b-bias")
p->i_bframe_bias = atoi(value);
OPT("b-pyramid")
p->b_bframe_pyramid = atobool(value);
OPT("nf")
p->b_deblocking_filter = !atobool(value);
OPT2("filter", "deblock")
{
if( 2 == sscanf( value, "%d:%d", &p->i_deblocking_filter_alphac0, &p->i_deblocking_filter_beta ) ||
2 == sscanf( value, "%d,%d", &p->i_deblocking_filter_alphac0, &p->i_deblocking_filter_beta ) )
{
p->b_deblocking_filter = 1;
}
else if( sscanf( value, "%d", &p->i_deblocking_filter_alphac0 ) )
{
p->b_deblocking_filter = 1;
p->i_deblocking_filter_beta = p->i_deblocking_filter_alphac0;
}
else
p->b_deblocking_filter = atobool(value);
}
OPT("cabac")
p->b_cabac = atobool(value);
OPT("cabac-idc")
p->i_cabac_init_idc = atoi(value);
OPT("interlaced")
p->b_interlaced = atobool(value);
OPT("cqm")
{
if( strstr( value, "flat" ) )
p->i_cqm_preset = X264_CQM_FLAT;
else if( strstr( value, "jvt" ) )
p->i_cqm_preset = X264_CQM_JVT;
else
p->psz_cqm_file = strdup(value);
}
OPT("cqmfile")
p->psz_cqm_file = strdup(value);
OPT("cqm4")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_4iy, 16 );
b_error |= parse_cqm( value, p->cqm_4ic, 16 );
b_error |= parse_cqm( value, p->cqm_4py, 16 );
b_error |= parse_cqm( value, p->cqm_4pc, 16 );
}
OPT("cqm8")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_8iy, 64 );
b_error |= parse_cqm( value, p->cqm_8py, 64 );
}
OPT("cqm4i")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_4iy, 16 );
b_error |= parse_cqm( value, p->cqm_4ic, 16 );
}
OPT("cqm4p")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_4py, 16 );
b_error |= parse_cqm( value, p->cqm_4pc, 16 );
}
OPT("cqm4iy")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_4iy, 16 );
}
OPT("cqm4ic")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_4ic, 16 );
}
OPT("cqm4py")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_4py, 16 );
}
OPT("cqm4pc")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_4pc, 16 );
}
OPT("cqm8i")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_8iy, 64 );
}
OPT("cqm8p")
{
p->i_cqm_preset = X264_CQM_CUSTOM;
b_error |= parse_cqm( value, p->cqm_8py, 64 );
}
OPT("log")
p->i_log_level = atoi(value);
#ifdef VISUALIZE
OPT("visualize")
p->b_visualize = atobool(value);
#endif
OPT2("analyse", "partitions")
{
p->analyse.inter = 0;
if( strstr( value, "none" ) ) p->analyse.inter = 0;
if( strstr( value, "all" ) ) p->analyse.inter = ~0;
if( strstr( value, "i4x4" ) ) p->analyse.inter |= X264_ANALYSE_I4x4;
if( strstr( value, "i8x8" ) ) p->analyse.inter |= X264_ANALYSE_I8x8;
if( strstr( value, "p8x8" ) ) p->analyse.inter |= X264_ANALYSE_PSUB16x16;
if( strstr( value, "p4x4" ) ) p->analyse.inter |= X264_ANALYSE_PSUB8x8;
if( strstr( value, "b8x8" ) ) p->analyse.inter |= X264_ANALYSE_BSUB16x16;
}
OPT("8x8dct")
p->analyse.b_transform_8x8 = atobool(value);
OPT2("weightb", "weight-b")
p->analyse.b_weighted_bipred = atobool(value);
OPT2("direct", "direct-pred")
b_error |= parse_enum( value, x264_direct_pred_names, &p->analyse.i_direct_mv_pred );
OPT("direct-8x8")
p->analyse.i_direct_8x8_inference = atoi(value);
OPT("chroma-qp-offset")
p->analyse.i_chroma_qp_offset = atoi(value);
OPT("me")
b_error |= parse_enum( value, x264_motion_est_names, &p->analyse.i_me_method );
OPT2("merange", "me-range")
p->analyse.i_me_range = atoi(value);
OPT2("mvrange", "mv-range")
p->analyse.i_mv_range = atoi(value);
OPT2("mvrange-thread", "mv-range-thread")
p->analyse.i_mv_range_thread = atoi(value);
OPT2("subme", "subq")
p->analyse.i_subpel_refine = atoi(value);
OPT("bime")
p->analyse.b_bidir_me = atobool(value);
OPT("chroma-me")
p->analyse.b_chroma_me = atobool(value);
OPT2("b-rdo", "brdo")
p->analyse.b_bframe_rdo = atobool(value);
OPT("mixed-refs")
p->analyse.b_mixed_references = atobool(value);
OPT("trellis")
p->analyse.i_trellis = atoi(value);
OPT("fast-pskip")
p->analyse.b_fast_pskip = atobool(value);
OPT("dct-decimate")
p->analyse.b_dct_decimate = atobool(value);
OPT("deadzone-inter")
p->analyse.i_luma_deadzone[0] = atoi(value);
OPT("deadzone-intra")
p->analyse.i_luma_deadzone[1] = atoi(value);
OPT("nr")
p->analyse.i_noise_reduction = atoi(value);
OPT("bitrate")
{
p->rc.i_bitrate = atoi(value);
p->rc.i_rc_method = X264_RC_ABR;
}
OPT2("qp", "qp_constant")
{
p->rc.i_qp_constant = atoi(value);
p->rc.i_rc_method = X264_RC_CQP;
}
OPT("crf")
{
p->rc.f_rf_constant = atof(value);
p->rc.i_rc_method = X264_RC_CRF;
}
OPT2("qpmin", "qp-min")
p->rc.i_qp_min = atoi(value);
OPT2("qpmax", "qp-max")
p->rc.i_qp_max = atoi(value);
OPT2("qpstep", "qp-step")
p->rc.i_qp_step = atoi(value);
OPT("ratetol")
p->rc.f_rate_tolerance = !strncmp("inf", value, 3) ? 1e9 : atof(value);
OPT("vbv-maxrate")
p->rc.i_vbv_max_bitrate = atoi(value);
OPT("vbv-bufsize")
p->rc.i_vbv_buffer_size = atoi(value);
OPT("vbv-init")
p->rc.f_vbv_buffer_init = atof(value);
OPT2("ipratio", "ip-factor")
p->rc.f_ip_factor = atof(value);
OPT2("pbratio", "pb-factor")
p->rc.f_pb_factor = atof(value);
OPT("pass")
{
int i = x264_clip3( atoi(value), 0, 3 );
p->rc.b_stat_write = i & 1;
p->rc.b_stat_read = i & 2;
}
OPT("stats")
{
p->rc.psz_stat_in = strdup(value);
p->rc.psz_stat_out = strdup(value);
}
OPT("rceq")
p->rc.psz_rc_eq = strdup(value);
OPT("qcomp")
p->rc.f_qcompress = atof(value);
OPT("qblur")
p->rc.f_qblur = atof(value);
OPT2("cplxblur", "cplx-blur")
p->rc.f_complexity_blur = atof(value);
OPT("zones")
p->rc.psz_zones = strdup(value);
OPT("psnr")
p->analyse.b_psnr = atobool(value);
OPT("ssim")
p->analyse.b_ssim = atobool(value);
OPT("aud")
p->b_aud = atobool(value);
OPT("sps-id")
p->i_sps_id = atoi(value);
OPT("global-header")
p->b_repeat_headers = !atobool(value);
OPT("repeat-headers")
p->b_repeat_headers = atobool(value);
else
return X264_PARAM_BAD_NAME;
#undef OPT
#undef OPT2
#undef atobool
#undef atoi
#undef atof
if( name_buf )
free( name_buf );
b_error |= value_was_null && !name_was_bool;
return b_error ? X264_PARAM_BAD_VALUE : 0;
}
/****************************************************************************
* x264_log:
****************************************************************************/
void x264_log( x264_t *h, int i_level, const char *psz_fmt, ... )
{
if( i_level <= h->param.i_log_level )
{
va_list arg;
va_start( arg, psz_fmt );
h->param.pf_log( h->param.p_log_private, i_level, psz_fmt, arg );
va_end( arg );
}
}
static void x264_log_default( void *p_unused, int i_level, const char *psz_fmt, va_list arg )
{
char *psz_prefix;
switch( i_level )
{
case X264_LOG_ERROR:
psz_prefix = "error";
break;
case X264_LOG_WARNING:
psz_prefix = "warning";
break;
case X264_LOG_INFO:
psz_prefix = "info";
break;
case X264_LOG_DEBUG:
psz_prefix = "debug";
break;
default:
psz_prefix = "unknown";
break;
}
fprintf( stderr, "x264 [%s]: ", psz_prefix );
vfprintf( stderr, psz_fmt, arg );
}
/****************************************************************************
* x264_picture_alloc:
****************************************************************************/
void x264_picture_alloc( x264_picture_t *pic, int i_csp, int i_width, int i_height )
{
pic->i_type = X264_TYPE_AUTO;
pic->i_qpplus1 = 0;
pic->img.i_csp = i_csp;
switch( i_csp & X264_CSP_MASK )
{
case X264_CSP_I420:
case X264_CSP_YV12:
pic->img.i_plane = 3;
pic->img.plane[0] = x264_malloc( 3 * i_width * i_height / 2 );
pic->img.plane[1] = pic->img.plane[0] + i_width * i_height;
pic->img.plane[2] = pic->img.plane[1] + i_width * i_height / 4;
pic->img.i_stride[0] = i_width;
pic->img.i_stride[1] = i_width / 2;
pic->img.i_stride[2] = i_width / 2;
break;
case X264_CSP_I422:
pic->img.i_plane = 3;
pic->img.plane[0] = x264_malloc( 2 * i_width * i_height );
pic->img.plane[1] = pic->img.plane[0] + i_width * i_height;
pic->img.plane[2] = pic->img.plane[1] + i_width * i_height / 2;
pic->img.i_stride[0] = i_width;
pic->img.i_stride[1] = i_width / 2;
pic->img.i_stride[2] = i_width / 2;
break;
case X264_CSP_I444:
pic->img.i_plane = 3;
pic->img.plane[0] = x264_malloc( 3 * i_width * i_height );
pic->img.plane[1] = pic->img.plane[0] + i_width * i_height;
pic->img.plane[2] = pic->img.plane[1] + i_width * i_height;
pic->img.i_stride[0] = i_width;
pic->img.i_stride[1] = i_width;
pic->img.i_stride[2] = i_width;
break;
case X264_CSP_YUYV:
pic->img.i_plane = 1;
pic->img.plane[0] = x264_malloc( 2 * i_width * i_height );
pic->img.i_stride[0] = 2 * i_width;
break;
case X264_CSP_RGB:
case X264_CSP_BGR:
pic->img.i_plane = 1;
pic->img.plane[0] = x264_malloc( 3 * i_width * i_height );
pic->img.i_stride[0] = 3 * i_width;
break;
case X264_CSP_BGRA:
pic->img.i_plane = 1;
pic->img.plane[0] = x264_malloc( 4 * i_width * i_height );
pic->img.i_stride[0] = 4 * i_width;
break;
default:
fprintf( stderr, "invalid CSP\n" );
pic->img.i_plane = 0;
break;
}
}
/****************************************************************************
* x264_picture_clean:
****************************************************************************/
void x264_picture_clean( x264_picture_t *pic )
{
x264_free( pic->img.plane[0] );
/* just to be safe */
memset( pic, 0, sizeof( x264_picture_t ) );
}
/****************************************************************************
* x264_nal_encode:
****************************************************************************/
int x264_nal_encode( void *p_data, int *pi_data, int b_annexeb, x264_nal_t *nal )
{
uint8_t *dst = p_data;
uint8_t *src = nal->p_payload;
uint8_t *end = &nal->p_payload[nal->i_payload];
int i_count = 0;
/* FIXME this code doesn't check overflow */
if( b_annexeb )
{
/* long nal start code (we always use long ones)*/
*dst++ = 0x00;
*dst++ = 0x00;
*dst++ = 0x00;
*dst++ = 0x01;
}
/* nal header */
*dst++ = ( 0x00 << 7 ) | ( nal->i_ref_idc << 5 ) | nal->i_type;
while( src < end )
{
if( i_count == 2 && *src <= 0x03 )
{
*dst++ = 0x03;
i_count = 0;
}
if( *src == 0 )
{
i_count++;
}
else
{
i_count = 0;
}
*dst++ = *src++;
}
*pi_data = dst - (uint8_t*)p_data;
return *pi_data;
}
/****************************************************************************
* x264_nal_decode:
****************************************************************************/
int x264_nal_decode( x264_nal_t *nal, void *p_data, int i_data )
{
uint8_t *src = p_data;
uint8_t *end = &src[i_data];
uint8_t *dst = nal->p_payload;
nal->i_type = src[0]&0x1f;
nal->i_ref_idc = (src[0] >> 5)&0x03;
src++;
while( src < end )
{
if( src < end - 3 && src[0] == 0x00 && src[1] == 0x00 && src[2] == 0x03 )
{
*dst++ = 0x00;
*dst++ = 0x00;
src += 3;
continue;
}
*dst++ = *src++;
}
nal->i_payload = dst - (uint8_t*)p_data;
return 0;
}
/****************************************************************************
* x264_malloc:
****************************************************************************/
void *x264_malloc( int i_size )
{
#ifdef SYS_MACOSX
/* Mac OS X always returns 16 bytes aligned memory */
return malloc( i_size );
#elif defined( HAVE_MALLOC_H )
return memalign( 16, i_size );
#else
uint8_t * buf;
uint8_t * align_buf;
buf = (uint8_t *) malloc( i_size + 15 + sizeof( void ** ) +
sizeof( int ) );
align_buf = buf + 15 + sizeof( void ** ) + sizeof( int );
align_buf -= (long) align_buf & 15;
*( (void **) ( align_buf - sizeof( void ** ) ) ) = buf;
*( (int *) ( align_buf - sizeof( void ** ) - sizeof( int ) ) ) = i_size;
return align_buf;
#endif
}
/****************************************************************************
* x264_free:
****************************************************************************/
void x264_free( void *p )
{
if( p )
{
#if defined( HAVE_MALLOC_H ) || defined( SYS_MACOSX )
free( p );
#else
free( *( ( ( void **) p ) - 1 ) );
#endif
}
}
/****************************************************************************
* x264_realloc:
****************************************************************************/
void *x264_realloc( void *p, int i_size )
{
#ifdef HAVE_MALLOC_H
return realloc( p, i_size );
#else
int i_old_size = 0;
uint8_t * p_new;
if( p )
{
i_old_size = *( (int*) ( (uint8_t*) p ) - sizeof( void ** ) -
sizeof( int ) );
}
p_new = x264_malloc( i_size );
if( i_old_size > 0 && i_size > 0 )
{
memcpy( p_new, p, ( i_old_size < i_size ) ? i_old_size : i_size );
}
x264_free( p );
return p_new;
#endif
}
/****************************************************************************
* x264_reduce_fraction:
****************************************************************************/
void x264_reduce_fraction( int *n, int *d )
{
int a = *n;
int b = *d;
int c;
if( !a || !b )
return;
c = a % b;
while(c)
{
a = b;
b = c;
c = a % b;
}
*n /= b;
*d /= b;
}
/****************************************************************************
* x264_slurp_file:
****************************************************************************/
char *x264_slurp_file( const char *filename )
{
int b_error = 0;
int i_size;
char *buf;
FILE *fh = fopen( filename, "rb" );
if( !fh )
return NULL;
b_error |= fseek( fh, 0, SEEK_END ) < 0;
b_error |= ( i_size = ftell( fh ) ) <= 0;
b_error |= fseek( fh, 0, SEEK_SET ) < 0;
if( b_error )
return NULL;
buf = x264_malloc( i_size+2 );
if( buf == NULL )
return NULL;
b_error |= fread( buf, 1, i_size, fh ) != i_size;
if( buf[i_size-1] != '\n' )
buf[i_size++] = '\n';
buf[i_size] = 0;
fclose( fh );
if( b_error )
{
x264_free( buf );
return NULL;
}
return buf;
}
/****************************************************************************
* x264_param2string:
****************************************************************************/
char *x264_param2string( x264_param_t *p, int b_res )
{
int len = 1000;
char *buf, *s;
if( p->rc.psz_zones )
len += strlen(p->rc.psz_zones);
buf = s = x264_malloc( len );
if( b_res )
{
s += sprintf( s, "%dx%d ", p->i_width, p->i_height );
s += sprintf( s, "fps=%d/%d ", p->i_fps_num, p->i_fps_den );
}
s += sprintf( s, "cabac=%d", p->b_cabac );
s += sprintf( s, " ref=%d", p->i_frame_reference );
s += sprintf( s, " deblock=%d:%d:%d", p->b_deblocking_filter,
p->i_deblocking_filter_alphac0, p->i_deblocking_filter_beta );
s += sprintf( s, " analyse=%#x:%#x", p->analyse.intra, p->analyse.inter );
s += sprintf( s, " me=%s", x264_motion_est_names[ p->analyse.i_me_method ] );
s += sprintf( s, " subme=%d", p->analyse.i_subpel_refine );
s += sprintf( s, " brdo=%d", p->analyse.b_bframe_rdo );
s += sprintf( s, " mixed_ref=%d", p->analyse.b_mixed_references );
s += sprintf( s, " me_range=%d", p->analyse.i_me_range );
s += sprintf( s, " chroma_me=%d", p->analyse.b_chroma_me );
s += sprintf( s, " trellis=%d", p->analyse.i_trellis );
s += sprintf( s, " 8x8dct=%d", p->analyse.b_transform_8x8 );
s += sprintf( s, " cqm=%d", p->i_cqm_preset );
s += sprintf( s, " deadzone=%d,%d", p->analyse.i_luma_deadzone[0], p->analyse.i_luma_deadzone[1] );
s += sprintf( s, " chroma_qp_offset=%d", p->analyse.i_chroma_qp_offset );
s += sprintf( s, " threads=%d", p->i_threads );
s += sprintf( s, " nr=%d", p->analyse.i_noise_reduction );
s += sprintf( s, " decimate=%d", p->analyse.b_dct_decimate );
s += sprintf( s, " mbaff=%d", p->b_interlaced );
s += sprintf( s, " bframes=%d", p->i_bframe );
if( p->i_bframe )
{
s += sprintf( s, " b_pyramid=%d b_adapt=%d b_bias=%d direct=%d wpredb=%d bime=%d",
p->b_bframe_pyramid, p->b_bframe_adaptive, p->i_bframe_bias,
p->analyse.i_direct_mv_pred, p->analyse.b_weighted_bipred,
p->analyse.b_bidir_me );
}
s += sprintf( s, " keyint=%d keyint_min=%d scenecut=%d%s",
p->i_keyint_max, p->i_keyint_min, p->i_scenecut_threshold,
p->b_pre_scenecut ? "(pre)" : "" );
s += sprintf( s, " rc=%s", p->rc.i_rc_method == X264_RC_ABR ?
( p->rc.b_stat_read ? "2pass" : p->rc.i_vbv_buffer_size ? "cbr" : "abr" )
: p->rc.i_rc_method == X264_RC_CRF ? "crf" : "cqp" );
if( p->rc.i_rc_method == X264_RC_ABR || p->rc.i_rc_method == X264_RC_CRF )
{
if( p->rc.i_rc_method == X264_RC_CRF )
s += sprintf( s, " crf=%.1f", p->rc.f_rf_constant );
else
s += sprintf( s, " bitrate=%d ratetol=%.1f",
p->rc.i_bitrate, p->rc.f_rate_tolerance );
s += sprintf( s, " rceq='%s' qcomp=%.2f qpmin=%d qpmax=%d qpstep=%d",
p->rc.psz_rc_eq, p->rc.f_qcompress,
p->rc.i_qp_min, p->rc.i_qp_max, p->rc.i_qp_step );
if( p->rc.b_stat_read )
s += sprintf( s, " cplxblur=%.1f qblur=%.1f",
p->rc.f_complexity_blur, p->rc.f_qblur );
if( p->rc.i_vbv_buffer_size )
s += sprintf( s, " vbv_maxrate=%d vbv_bufsize=%d",
p->rc.i_vbv_max_bitrate, p->rc.i_vbv_buffer_size );
}
else if( p->rc.i_rc_method == X264_RC_CQP )
s += sprintf( s, " qp=%d", p->rc.i_qp_constant );
if( !(p->rc.i_rc_method == X264_RC_CQP && p->rc.i_qp_constant == 0) )
{
s += sprintf( s, " ip_ratio=%.2f", p->rc.f_ip_factor );
if( p->i_bframe )
s += sprintf( s, " pb_ratio=%.2f", p->rc.f_pb_factor );
if( p->rc.psz_zones )
s += sprintf( s, " zones=%s", p->rc.psz_zones );
else if( p->rc.i_zones )
s += sprintf( s, " zones" );
}
return buf;
}