1 /*****************************************************************************
2 * avs.c: avisynth input
3 *****************************************************************************
4 * Copyright (C) 2009-2010 x264 project
6 * Authors: Steven Walters <kemuri9@gmail.com>
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.
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.
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.
22 * This program is also available under a commercial proprietary license.
23 * For more information, contact us at licensing@x264.com.
24 *****************************************************************************/
28 #define FAIL_IF_ERROR( cond, ... ) FAIL_IF_ERR( cond, "avs", __VA_ARGS__ )
30 #define AVSC_NO_DECLSPEC
32 #include "extras/avisynth_c.h"
33 #define AVSC_DECLARE_FUNC(name) name##_func name
35 /* AVS uses a versioned interface to control backwards compatibility */
36 /* YV12 support is required, which was added in 2.5 */
37 #define AVS_INTERFACE_25 2
40 #include <libavutil/pixfmt.h>
43 /* maximum size of the sequence of filters to try on non script files */
44 #define AVS_MAX_SEQUENCE 5
46 #define LOAD_AVS_FUNC(name, continue_on_fail)\
48 h->func.name = (void*)GetProcAddress( h->library, #name );\
49 if( !continue_on_fail && !h->func.name )\
56 AVS_ScriptEnvironment *env;
61 AVSC_DECLARE_FUNC( avs_clip_get_error );
62 AVSC_DECLARE_FUNC( avs_create_script_environment );
63 AVSC_DECLARE_FUNC( avs_delete_script_environment );
64 AVSC_DECLARE_FUNC( avs_get_frame );
65 AVSC_DECLARE_FUNC( avs_get_video_info );
66 AVSC_DECLARE_FUNC( avs_function_exists );
67 AVSC_DECLARE_FUNC( avs_invoke );
68 AVSC_DECLARE_FUNC( avs_release_clip );
69 AVSC_DECLARE_FUNC( avs_release_value );
70 AVSC_DECLARE_FUNC( avs_release_video_frame );
71 AVSC_DECLARE_FUNC( avs_take_clip );
75 /* load the library and functions we require from it */
76 static int x264_avs_load_library( avs_hnd_t *h )
78 h->library = LoadLibrary( "avisynth" );
81 LOAD_AVS_FUNC( avs_clip_get_error, 0 );
82 LOAD_AVS_FUNC( avs_create_script_environment, 0 );
83 LOAD_AVS_FUNC( avs_delete_script_environment, 1 );
84 LOAD_AVS_FUNC( avs_get_frame, 0 );
85 LOAD_AVS_FUNC( avs_get_video_info, 0 );
86 LOAD_AVS_FUNC( avs_function_exists, 0 );
87 LOAD_AVS_FUNC( avs_invoke, 0 );
88 LOAD_AVS_FUNC( avs_release_clip, 0 );
89 LOAD_AVS_FUNC( avs_release_value, 0 );
90 LOAD_AVS_FUNC( avs_release_video_frame, 0 );
91 LOAD_AVS_FUNC( avs_take_clip, 0 );
94 FreeLibrary( h->library );
98 /* generate a filter sequence to try based on the filename extension */
99 static void avs_build_filter_sequence( char *filename_ext, const char *filter[AVS_MAX_SEQUENCE+1] )
102 const char *all_purpose[] = { "FFmpegSource2", "DSS2", "DirectShowSource", 0 };
103 if( !strcasecmp( filename_ext, "avi" ) )
104 filter[i++] = "AVISource";
105 if( !strcasecmp( filename_ext, "d2v" ) )
106 filter[i++] = "MPEG2Source";
107 if( !strcasecmp( filename_ext, "dga" ) )
108 filter[i++] = "AVCSource";
109 for( int j = 0; all_purpose[j] && i < AVS_MAX_SEQUENCE; j++ )
110 filter[i++] = all_purpose[j];
113 static AVS_Value update_clip( avs_hnd_t *h, const AVS_VideoInfo **vi, AVS_Value res, AVS_Value release )
115 h->func.avs_release_clip( h->clip );
116 h->clip = h->func.avs_take_clip( res, h->env );
117 h->func.avs_release_value( release );
118 *vi = h->func.avs_get_video_info( h->clip );
122 static int open_file( char *psz_filename, hnd_t *p_handle, video_info_t *info, cli_input_opt_t *opt )
124 FILE *fh = fopen( psz_filename, "r" );
127 FAIL_IF_ERROR( !x264_is_regular_file( fh ), "AVS input is incompatible with non-regular file `%s'\n", psz_filename );
130 avs_hnd_t *h = malloc( sizeof(avs_hnd_t) );
133 FAIL_IF_ERROR( x264_avs_load_library( h ), "failed to load avisynth\n" )
134 h->env = h->func.avs_create_script_environment( AVS_INTERFACE_25 );
135 FAIL_IF_ERROR( !h->env, "failed to initiate avisynth\n" )
136 AVS_Value arg = avs_new_value_string( psz_filename );
138 char *filename_ext = get_filename_extension( psz_filename );
140 if( !strcasecmp( filename_ext, "avs" ) )
142 res = h->func.avs_invoke( h->env, "Import", arg, NULL );
143 FAIL_IF_ERROR( avs_is_error( res ), "%s\n", avs_as_string( res ) )
144 /* check if the user is using a multi-threaded script and apply distributor if necessary.
145 adapted from avisynth's vfw interface */
146 AVS_Value mt_test = h->func.avs_invoke( h->env, "GetMTMode", avs_new_value_bool( 0 ), NULL );
147 int mt_mode = avs_is_int( mt_test ) ? avs_as_int( mt_test ) : 0;
148 h->func.avs_release_value( mt_test );
149 if( mt_mode > 0 && mt_mode < 5 )
151 AVS_Value temp = h->func.avs_invoke( h->env, "Distributor", res, NULL );
152 h->func.avs_release_value( res );
156 else /* non script file */
158 /* cycle through known source filters to find one that works */
159 const char *filter[AVS_MAX_SEQUENCE+1] = { 0 };
160 avs_build_filter_sequence( filename_ext, filter );
162 for( i = 0; filter[i]; i++ )
164 x264_cli_log( "avs", X264_LOG_INFO, "trying %s... ", filter[i] );
165 if( !h->func.avs_function_exists( h->env, filter[i] ) )
167 x264_cli_printf( X264_LOG_INFO, "not found\n" );
170 if( !strncasecmp( filter[i], "FFmpegSource", 12 ) )
172 x264_cli_printf( X264_LOG_INFO, "indexing... " );
175 res = h->func.avs_invoke( h->env, filter[i], arg, NULL );
176 if( !avs_is_error( res ) )
178 x264_cli_printf( X264_LOG_INFO, "succeeded\n" );
181 x264_cli_printf( X264_LOG_INFO, "failed\n" );
183 FAIL_IF_ERROR( !filter[i], "unable to find source filter to open `%s'\n", psz_filename )
185 FAIL_IF_ERROR( !avs_is_clip( res ), "`%s' didn't return a video clip\n", psz_filename )
186 h->clip = h->func.avs_take_clip( res, h->env );
187 const AVS_VideoInfo *vi = h->func.avs_get_video_info( h->clip );
188 FAIL_IF_ERROR( !avs_has_video( vi ), "`%s' has no video data\n", psz_filename )
189 /* if the clip is made of fields instead of frames, call weave to make them frames */
190 if( avs_is_field_based( vi ) )
192 x264_cli_log( "avs", X264_LOG_WARNING, "detected fieldbased (separated) input, weaving to frames\n" );
193 AVS_Value tmp = h->func.avs_invoke( h->env, "Weave", res, NULL );
194 FAIL_IF_ERROR( avs_is_error( tmp ), "couldn't weave fields into frames\n" )
195 res = update_clip( h, &vi, tmp, res );
196 info->interlaced = 1;
197 info->tff = avs_is_tff( vi );
200 /* if swscale is not available, convert CSPs to yv12 */
201 if( !avs_is_yv12( vi ) )
203 x264_cli_log( "avs", X264_LOG_WARNING, "converting input clip to YV12\n" );
204 FAIL_IF_ERROR( vi->width&1 || vi->height&1, "input clip width or height not divisible by 2 (%dx%d)\n", vi->width, vi->height )
205 const char *arg_name[2] = { NULL, "interlaced" };
206 AVS_Value arg_arr[2] = { res, avs_new_value_bool( info->interlaced ) };
207 AVS_Value res2 = h->func.avs_invoke( h->env, "ConvertToYV12", avs_new_value_array( arg_arr, 2 ), arg_name );
208 FAIL_IF_ERROR( avs_is_error( res2 ), "couldn't convert input clip to YV12\n" )
209 res = update_clip( h, &vi, res2, res );
212 h->func.avs_release_value( res );
214 info->width = vi->width;
215 info->height = vi->height;
216 info->fps_num = vi->fps_numerator;
217 info->fps_den = vi->fps_denominator;
218 h->num_frames = info->num_frames = vi->num_frames;
219 info->thread_safe = 1;
221 if( avs_is_rgb32( vi ) )
222 info->csp = X264_CSP_BGRA | X264_CSP_VFLIP;
223 else if( avs_is_rgb24( vi ) )
224 info->csp = X264_CSP_BGR | X264_CSP_VFLIP;
225 else if( avs_is_yuy2( vi ) )
226 info->csp = PIX_FMT_YUYV422 | X264_CSP_OTHER;
227 else if( avs_is_yv24( vi ) )
228 info->csp = X264_CSP_I444;
229 else if( avs_is_yv16( vi ) )
230 info->csp = X264_CSP_I422;
231 else if( avs_is_yv12( vi ) )
232 info->csp = X264_CSP_I420;
233 else if( avs_is_yv411( vi ) )
234 info->csp = PIX_FMT_YUV411P | X264_CSP_OTHER;
235 else if( avs_is_y8( vi ) )
236 info->csp = PIX_FMT_GRAY8 | X264_CSP_OTHER;
238 info->csp = X264_CSP_NONE;
240 info->csp = X264_CSP_I420;
248 static int picture_alloc( cli_pic_t *pic, int csp, int width, int height )
250 if( x264_cli_pic_alloc( pic, X264_CSP_NONE, width, height ) )
253 const x264_cli_csp_t *cli_csp = x264_cli_get_csp( csp );
255 pic->img.planes = cli_csp->planes;
257 else if( csp == (PIX_FMT_YUV411P | X264_CSP_OTHER) )
260 pic->img.planes = 1; //y8 and yuy2 are one plane
265 static int read_frame( cli_pic_t *pic, hnd_t handle, int i_frame )
267 static const int plane[3] = { AVS_PLANAR_Y, AVS_PLANAR_U, AVS_PLANAR_V };
268 avs_hnd_t *h = handle;
269 if( i_frame >= h->num_frames )
271 AVS_VideoFrame *frm = pic->opaque = h->func.avs_get_frame( h->clip, i_frame );
272 const char *err = h->func.avs_clip_get_error( h->clip );
273 FAIL_IF_ERROR( err, "%s occurred while reading frame %d\n", err, i_frame )
274 for( int i = 0; i < pic->img.planes; i++ )
276 /* explicitly cast away the const attribute to avoid a warning */
277 pic->img.plane[i] = (uint8_t*)avs_get_read_ptr_p( frm, plane[i] );
278 pic->img.stride[i] = avs_get_pitch_p( frm, plane[i] );
283 static int release_frame( cli_pic_t *pic, hnd_t handle )
285 avs_hnd_t *h = handle;
286 h->func.avs_release_video_frame( pic->opaque );
290 static void picture_clean( cli_pic_t *pic )
292 memset( pic, 0, sizeof(cli_pic_t) );
295 static int close_file( hnd_t handle )
297 avs_hnd_t *h = handle;
298 h->func.avs_release_clip( h->clip );
299 if( h->func.avs_delete_script_environment )
300 h->func.avs_delete_script_environment( h->env );
301 FreeLibrary( h->library );
306 const cli_input_t avs_input = { open_file, picture_alloc, read_frame, release_frame, picture_clean, close_file };