common.c
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上传日期:2021-12-09
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文件大小:16k
源码类别:
Audio
开发平台:
Visual 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 <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.
- *****************************************************************************/
- #include <stdio.h>
- #include <string.h>
- #include <stdarg.h>
- #ifdef HAVE_MALLOC_H
- #include <malloc.h>
- #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;
- /* 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.b_cbr = 0;
- 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 = 30;
- param->rc.i_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 = -1; // set from level_idc
- param->analyse.i_chroma_qp_offset = 0;
- param->analyse.b_fast_pskip = 1;
- param->analyse.b_psnr = 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;
- }
- /****************************************************************************
- * 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 CSPn" );
- 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_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 )
- {
- char *buf = x264_malloc( 1000 );
- char *s = buf;
- 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, " chroma_qp_offset=%d", p->analyse.i_chroma_qp_offset );
- s += sprintf( s, " slices=%d", p->i_threads );
- s += sprintf( s, " nr=%d", p->analyse.i_noise_reduction );
- 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",
- p->i_keyint_max, p->i_keyint_min, p->i_scenecut_threshold );
- s += sprintf( s, " rc=%s", p->rc.b_stat_read && p->rc.b_cbr ? "2pass" :
- p->rc.b_cbr ? p->rc.i_vbv_buffer_size ? "cbr" : "abr" :
- p->rc.i_rf_constant ? "crf" : "cqp" );
- if( p->rc.b_cbr || p->rc.i_rf_constant )
- {
- if( p->rc.i_rf_constant )
- s += sprintf( s, " crf=%d", p->rc.i_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
- s += sprintf( s, " qp=%d", p->rc.i_qp_constant );
- if( p->rc.b_cbr || 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.i_zones )
- s += sprintf( s, " zones" );
- }
- return buf;
- }