example.c

   1 /*****************************************************************************
   2  * example.c: libx264 API usage example
   3  *****************************************************************************
   4  * Copyright (C) 2014-2019 x264 project
   5  *
   6  * Authors: Anton Mitrofanov <BugMaster@narod.ru>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111, USA.
  21  *
  22  * This program is also available under a commercial proprietary license.
  23  * For more information, contact us at licensing@x264.com.
  24  *****************************************************************************/
  25
  26 #ifdef _WIN32
  27 #include <io.h>       /* _setmode() */
  28 #include <fcntl.h>    /* _O_BINARY */
  29 #endif
  30
  31 #include <stdint.h>
  32 #include <stdio.h>
  33 #include <x264.h>
  34
  35 #define FAIL_IF_ERROR( cond, ... )\
  36 do\
  37 {\
  38     if( cond )\
  39     {\
  40         fprintf( stderr, __VA_ARGS__ );\
  41         goto fail;\
  42     }\
  43 } while( 0 )
  44
  45 int main( int argc, char **argv )
  46 {
  47     int width, height;
  48     x264_param_t param;
  49     x264_picture_t pic;
  50     x264_picture_t pic_out;
  51     x264_t *h;
  52     int i_frame = 0;
  53     int i_frame_size;
  54     x264_nal_t *nal;
  55     int i_nal;
  56
  57 #ifdef _WIN32
  58     _setmode( _fileno( stdin ),  _O_BINARY );
  59     _setmode( _fileno( stdout ), _O_BINARY );
  60     _setmode( _fileno( stderr ), _O_BINARY );
  61 #endif
  62
  63     FAIL_IF_ERROR( !(argc > 1), "Example usage: example 352x288 <input.yuv >output.h264\n" );
  64     FAIL_IF_ERROR( 2 != sscanf( argv[1], "%dx%d", &width, &height ), "resolution not specified or incorrect\n" );
  65
  66     /* Get default params for preset/tuning */
  67     if( x264_param_default_preset( &param, "medium", NULL ) < 0 )
  68         goto fail;
  69
  70     /* Configure non-default params */
  71     param.i_bitdepth = 8;
  72     param.i_csp = X264_CSP_I420;
  73     param.i_width  = width;
  74     param.i_height = height;
  75     param.b_vfr_input = 0;
  76     param.b_repeat_headers = 1;
  77     param.b_annexb = 1;
  78
  79     /* Apply profile restrictions. */
  80     if( x264_param_apply_profile( &param, "high" ) < 0 )
  81         goto fail;
  82
  83     if( x264_picture_alloc( &pic, param.i_csp, param.i_width, param.i_height ) < 0 )
  84         goto fail;
  85 #undef fail
  86 #define fail fail2
  87
  88     h = x264_encoder_open( &param );
  89     if( !h )
  90         goto fail;
  91 #undef fail
  92 #define fail fail3
  93
  94     int luma_size = width * height;
  95     int chroma_size = luma_size / 4;
  96     /* Encode frames */
  97     for( ;; i_frame++ )
  98     {
  99         /* Read input frame */
 100         if( fread( pic.img.plane[0], 1, luma_size, stdin ) != luma_size )
 101             break;
 102         if( fread( pic.img.plane[1], 1, chroma_size, stdin ) != chroma_size )
 103             break;
 104         if( fread( pic.img.plane[2], 1, chroma_size, stdin ) != chroma_size )
 105             break;
 106
 107         pic.i_pts = i_frame;
 108         i_frame_size = x264_encoder_encode( h, &nal, &i_nal, &pic, &pic_out );
 109         if( i_frame_size < 0 )
 110             goto fail;
 111         else if( i_frame_size )
 112         {
 113             if( !fwrite( nal->p_payload, i_frame_size, 1, stdout ) )
 114                 goto fail;
 115         }
 116     }
 117     /* Flush delayed frames */
 118     while( x264_encoder_delayed_frames( h ) )
 119     {
 120         i_frame_size = x264_encoder_encode( h, &nal, &i_nal, NULL, &pic_out );
 121         if( i_frame_size < 0 )
 122             goto fail;
 123         else if( i_frame_size )
 124         {
 125             if( !fwrite( nal->p_payload, i_frame_size, 1, stdout ) )
 126                 goto fail;
 127         }
 128     }
 129
 130     x264_encoder_close( h );
 131     x264_picture_clean( &pic );
 132     return 0;
 133
 134 #undef fail
 135 fail3:
 136     x264_encoder_close( h );
 137 fail2:
 138     x264_picture_clean( &pic );
 139 fail:
 140     return -1;
 141 }