1 /*****************************************************************************
2 * raw.c: raw input
3 *****************************************************************************
4 * Copyright (C) 2003-2014 x264 project
5 *
6 * Authors: Laurent Aimar <fenrir@via.ecp.fr>
7 * Loren Merritt <lorenm@u.washington.edu>
8 * Steven Walters <kemuri9@gmail.com>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
23 *
24 * This program is also available under a commercial proprietary license.
25 * For more information, contact us at licensing@x264.com.
26 *****************************************************************************/
27
28 #include "input.h"
29
30 #define FAIL_IF_ERROR( cond, ... ) FAIL_IF_ERR( cond, "raw", __VA_ARGS__ )
31
32 typedef struct
33 {
34 FILE *fh;
35 int next_frame;
36 uint64_t plane_size[4];
37 uint64_t frame_size;
38 int bit_depth;
39 } raw_hnd_t;
40
open_file(char * psz_filename,hnd_t * p_handle,video_info_t * info,cli_input_opt_t * opt)41 static int open_file( char *psz_filename, hnd_t *p_handle, video_info_t *info, cli_input_opt_t *opt )
42 {
43 raw_hnd_t *h = calloc( 1, sizeof(raw_hnd_t) );
44 const x264_cli_csp_t *csp;
45 int i;
46
47 if( !h )
48 return -1;
49
50 if( !opt->resolution )
51 {
52 char *p;
53 /* try to parse the file name */
54 for( p = psz_filename; *p; p++ )
55 if( *p >= '0' && *p <= '9' && sscanf( p, "%dx%d", &info->width, &info->height ) == 2 )
56 break;
57 }
58 else
59 sscanf( opt->resolution, "%dx%d", &info->width, &info->height );
60 FAIL_IF_ERROR( !info->width || !info->height, "raw input requires a resolution.\n" )
61 if( opt->colorspace )
62 {
63 for( info->csp = X264_CSP_CLI_MAX-1; info->csp > X264_CSP_NONE; info->csp-- )
64 {
65 if( x264_cli_csps[info->csp].name && !strcasecmp( x264_cli_csps[info->csp].name, opt->colorspace ) )
66 break;
67 }
68 FAIL_IF_ERROR( info->csp == X264_CSP_NONE, "unsupported colorspace `%s'\n", opt->colorspace );
69 }
70 else /* default */
71 info->csp = X264_CSP_I420;
72
73 h->bit_depth = opt->bit_depth;
74 FAIL_IF_ERROR( h->bit_depth < 8 || h->bit_depth > 16, "unsupported bit depth `%d'\n", h->bit_depth );
75 if( h->bit_depth > 8 )
76 info->csp |= X264_CSP_HIGH_DEPTH;
77
78 if( !strcmp( psz_filename, "-" ) )
79 h->fh = stdin;
80 else
81 h->fh = x264_fopen( psz_filename, "rb" );
82 if( h->fh == NULL )
83 return -1;
84
85 info->thread_safe = 1;
86 info->num_frames = 0;
87 info->vfr = 0;
88
89 csp = x264_cli_get_csp( info->csp );
90 for( i = 0; i < csp->planes; i++ )
91 {
92 h->plane_size[i] = x264_cli_pic_plane_size( info->csp, info->width, info->height, i );
93 h->frame_size += h->plane_size[i];
94 /* x264_cli_pic_plane_size returns the size in bytes, we need the value in pixels from here on */
95 h->plane_size[i] /= x264_cli_csp_depth_factor( info->csp );
96 }
97
98 if( x264_is_regular_file( h->fh ) )
99 {
100 uint64_t size;
101
102 fseek( h->fh, 0, SEEK_END );
103 size = ftell( h->fh );
104 fseek( h->fh, 0, SEEK_SET );
105 info->num_frames = size / h->frame_size;
106 }
107
108 *p_handle = h;
109 return 0;
110 }
111
read_frame_internal(cli_pic_t * pic,raw_hnd_t * h,int bit_depth_uc)112 static int read_frame_internal( cli_pic_t *pic, raw_hnd_t *h, int bit_depth_uc )
113 {
114 int error = 0;
115 int pixel_depth = x264_cli_csp_depth_factor( pic->img.csp );
116 int i;
117
118 for( i = 0; i < pic->img.planes && !error; i++ )
119 {
120 error |= fread( pic->img.plane[i], pixel_depth, h->plane_size[i], h->fh ) != h->plane_size[i];
121 if( bit_depth_uc )
122 {
123 /* upconvert non 16bit high depth planes to 16bit using the same
124 * algorithm as used in the depth filter. */
125 uint16_t *plane = (uint16_t*)pic->img.plane[i];
126 uint64_t pixel_count = h->plane_size[i];
127 int lshift = 16 - h->bit_depth;
128 uint64_t j;
129
130 for( j = 0; j < pixel_count; j++ )
131 plane[j] = plane[j] << lshift;
132 }
133 }
134 return error;
135 }
136
read_frame(cli_pic_t * pic,hnd_t handle,int i_frame)137 static int read_frame( cli_pic_t *pic, hnd_t handle, int i_frame )
138 {
139 raw_hnd_t *h = handle;
140
141 if( i_frame > h->next_frame )
142 {
143 if( x264_is_regular_file( h->fh ) )
144 fseek( h->fh, i_frame * h->frame_size, SEEK_SET );
145 else
146 while( i_frame > h->next_frame )
147 {
148 if( read_frame_internal( pic, h, 0 ) )
149 return -1;
150 h->next_frame++;
151 }
152 }
153
154 if( read_frame_internal( pic, h, h->bit_depth & 7 ) )
155 return -1;
156
157 h->next_frame = i_frame+1;
158 return 0;
159 }
160
close_file(hnd_t handle)161 static int close_file( hnd_t handle )
162 {
163 raw_hnd_t *h = handle;
164 if( !h || !h->fh )
165 return 0;
166 fclose( h->fh );
167 free( h );
168 return 0;
169 }
170
171 const cli_input_t raw_input = { open_file, x264_cli_pic_alloc, read_frame, NULL, x264_cli_pic_clean, close_file };
172