avs.c
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/*****************************************************************************
* avs.c: avisynth input
*****************************************************************************
* Copyright (C) 2009-2024 x264 project
*
* Authors: Steven Walters <kemuri9@gmail.com>
* Anton Mitrofanov <BugMaster@narod.ru>
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA.
*
* This program is also available under a commercial proprietary license.
* For more information, contact us at licensing@x264.com.
*****************************************************************************/
#include "input.h"
#if SYS_WINDOWS || SYS_CYGWIN
#include <windows.h>
#define avs_open() LoadLibraryW( L"avisynth" )
#define avs_close FreeLibrary
#define avs_address GetProcAddress
#else
#include <dlfcn.h>
#if SYS_MACOSX
#define avs_open() dlopen( "libavisynth.dylib", RTLD_NOW )
#else
#define avs_open() dlopen( "libavisynth.so", RTLD_NOW )
#endif
#define avs_close dlclose
#define avs_address dlsym
#endif
#define AVSC_NO_DECLSPEC
#undef EXTERN_C
#include "extras/avisynth_c.h"
#define AVSC_DECLARE_FUNC(name) name##_func name
#define FAIL_IF_ERROR( cond, ... ) FAIL_IF_ERR( cond, "avs", __VA_ARGS__ )
/* AVS uses a versioned interface to control backwards compatibility */
/* YV12 support is required, which was added in 2.5 */
#define AVS_INTERFACE_25 2
#if HAVE_SWSCALE
#include <libavutil/pixfmt.h>
#endif
/* maximum size of the sequence of filters to try on non script files */
#define AVS_MAX_SEQUENCE 5
#define LOAD_AVS_FUNC(name, continue_on_fail)\
{\
h->func.name = (void*)avs_address( h->library, #name );\
if( !continue_on_fail && !h->func.name )\
goto fail;\
}
#define LOAD_AVS_FUNC_ALIAS(name, alias, continue_on_fail)\
{\
if( !h->func.name )\
h->func.name = (void*)avs_address( h->library, alias );\
if( !continue_on_fail && !h->func.name )\
goto fail;\
}
typedef struct
{
AVS_Clip *clip;
AVS_ScriptEnvironment *env;
void *library;
int num_frames;
struct
{
AVSC_DECLARE_FUNC( avs_clip_get_error );
AVSC_DECLARE_FUNC( avs_create_script_environment );
AVSC_DECLARE_FUNC( avs_delete_script_environment );
AVSC_DECLARE_FUNC( avs_get_error );
AVSC_DECLARE_FUNC( avs_get_frame );
AVSC_DECLARE_FUNC( avs_get_video_info );
AVSC_DECLARE_FUNC( avs_function_exists );
AVSC_DECLARE_FUNC( avs_invoke );
AVSC_DECLARE_FUNC( avs_release_clip );
AVSC_DECLARE_FUNC( avs_release_value );
AVSC_DECLARE_FUNC( avs_release_video_frame );
AVSC_DECLARE_FUNC( avs_take_clip );
AVSC_DECLARE_FUNC( avs_is_yv24 );
AVSC_DECLARE_FUNC( avs_is_yv16 );
AVSC_DECLARE_FUNC( avs_is_yv12 );
AVSC_DECLARE_FUNC( avs_is_yv411 );
AVSC_DECLARE_FUNC( avs_is_y8 );
AVSC_DECLARE_FUNC( avs_get_pitch_p );
AVSC_DECLARE_FUNC( avs_get_read_ptr_p );
// AviSynth+ extension
AVSC_DECLARE_FUNC( avs_is_rgb48 );
AVSC_DECLARE_FUNC( avs_is_rgb64 );
AVSC_DECLARE_FUNC( avs_is_yuv444p16 );
AVSC_DECLARE_FUNC( avs_is_yuv422p16 );
AVSC_DECLARE_FUNC( avs_is_yuv420p16 );
AVSC_DECLARE_FUNC( avs_is_y16 );
AVSC_DECLARE_FUNC( avs_is_444 );
AVSC_DECLARE_FUNC( avs_is_422 );
AVSC_DECLARE_FUNC( avs_is_420 );
AVSC_DECLARE_FUNC( avs_is_y );
} func;
} avs_hnd_t;
/* load the library and functions we require from it */
static int custom_avs_load_library( avs_hnd_t *h )
{
h->library = avs_open();
if( !h->library )
return -1;
LOAD_AVS_FUNC( avs_clip_get_error, 0 );
LOAD_AVS_FUNC( avs_create_script_environment, 0 );
LOAD_AVS_FUNC( avs_delete_script_environment, 1 );
LOAD_AVS_FUNC( avs_get_error, 1 );
LOAD_AVS_FUNC( avs_get_frame, 0 );
LOAD_AVS_FUNC( avs_get_video_info, 0 );
LOAD_AVS_FUNC( avs_function_exists, 0 );
LOAD_AVS_FUNC( avs_invoke, 0 );
LOAD_AVS_FUNC( avs_release_clip, 0 );
LOAD_AVS_FUNC( avs_release_value, 0 );
LOAD_AVS_FUNC( avs_release_video_frame, 0 );
LOAD_AVS_FUNC( avs_take_clip, 0 );
LOAD_AVS_FUNC( avs_is_yv24, 1 );
LOAD_AVS_FUNC( avs_is_yv16, 1 );
LOAD_AVS_FUNC( avs_is_yv12, 1 );
LOAD_AVS_FUNC( avs_is_yv411, 1 );
LOAD_AVS_FUNC( avs_is_y8, 1 );
LOAD_AVS_FUNC( avs_get_pitch_p, 1 );
LOAD_AVS_FUNC( avs_get_read_ptr_p, 1 );
// AviSynth+ extension
LOAD_AVS_FUNC( avs_is_rgb48, 1 );
LOAD_AVS_FUNC_ALIAS( avs_is_rgb48, "_avs_is_rgb48@4", 1 );
LOAD_AVS_FUNC( avs_is_rgb64, 1 );
LOAD_AVS_FUNC_ALIAS( avs_is_rgb64, "_avs_is_rgb64@4", 1 );
LOAD_AVS_FUNC( avs_is_yuv444p16, 1 );
LOAD_AVS_FUNC( avs_is_yuv422p16, 1 );
LOAD_AVS_FUNC( avs_is_yuv420p16, 1 );
LOAD_AVS_FUNC( avs_is_y16, 1 );
LOAD_AVS_FUNC( avs_is_444, 1 );
LOAD_AVS_FUNC( avs_is_422, 1 );
LOAD_AVS_FUNC( avs_is_420, 1 );
LOAD_AVS_FUNC( avs_is_y, 1 );
return 0;
fail:
avs_close( h->library );
h->library = NULL;
return -1;
}
#define AVS_IS_YV24( vi ) (h->func.avs_is_yv24 ? h->func.avs_is_yv24( vi ) : avs_is_yv24( vi ))
#define AVS_IS_YV16( vi ) (h->func.avs_is_yv16 ? h->func.avs_is_yv16( vi ) : avs_is_yv16( vi ))
#define AVS_IS_YV12( vi ) (h->func.avs_is_yv12 ? h->func.avs_is_yv12( vi ) : avs_is_yv12( vi ))
#define AVS_IS_YV411( vi ) (h->func.avs_is_yv411 ? h->func.avs_is_yv411( vi ) : avs_is_yv411( vi ))
#define AVS_IS_Y8( vi ) (h->func.avs_is_y8 ? h->func.avs_is_y8( vi ) : avs_is_y8( vi ))
#define AVS_GET_PITCH_P( p, plane ) (h->func.avs_get_pitch_p ? h->func.avs_get_pitch_p( p, plane ) : avs_get_pitch_p( p, plane ))
#define AVS_GET_READ_PTR_P( p, plane ) (h->func.avs_get_read_ptr_p ? h->func.avs_get_read_ptr_p( p, plane ) : avs_get_read_ptr_p( p, plane ))
#define AVS_IS_AVISYNTHPLUS (h->func.avs_is_420 && h->func.avs_is_422 && h->func.avs_is_444)
#define AVS_IS_420( vi ) (h->func.avs_is_420 ? h->func.avs_is_420( vi ) : AVS_IS_YV12( vi ))
#define AVS_IS_422( vi ) (h->func.avs_is_422 ? h->func.avs_is_422( vi ) : AVS_IS_YV16( vi ))
#define AVS_IS_444( vi ) (h->func.avs_is_444 ? h->func.avs_is_444( vi ) : AVS_IS_YV24( vi ))
#define AVS_IS_RGB48( vi ) (h->func.avs_is_rgb48 && h->func.avs_is_rgb48( vi ))
#define AVS_IS_RGB64( vi ) (h->func.avs_is_rgb64 && h->func.avs_is_rgb64( vi ))
#define AVS_IS_YUV420P16( vi ) (h->func.avs_is_yuv420p16 && h->func.avs_is_yuv420p16( vi ))
#define AVS_IS_YUV422P16( vi ) (h->func.avs_is_yuv422p16 && h->func.avs_is_yuv422p16( vi ))
#define AVS_IS_YUV444P16( vi ) (h->func.avs_is_yuv444p16 && h->func.avs_is_yuv444p16( vi ))
#define AVS_IS_Y( vi ) (h->func.avs_is_y ? h->func.avs_is_y( vi ) : AVS_IS_Y8( vi ))
#define AVS_IS_Y16( vi ) (h->func.avs_is_y16 && h->func.avs_is_y16( vi ))
/* generate a filter sequence to try based on the filename extension */
static void avs_build_filter_sequence( char *filename_ext, const char *filter[AVS_MAX_SEQUENCE+1] )
{
int i = 0;
#if SYS_WINDOWS || SYS_CYGWIN
const char *all_purpose[] = { "FFmpegSource2", "DSS2", "DirectShowSource", 0 };
if( !strcasecmp( filename_ext, "avi" ) )
filter[i++] = "AVISource";
if( !strcasecmp( filename_ext, "d2v" ) )
filter[i++] = "MPEG2Source";
if( !strcasecmp( filename_ext, "dga" ) )
filter[i++] = "AVCSource";
#else
const char *all_purpose[] = { "FFVideoSource", 0 };
#endif
for( int j = 0; all_purpose[j] && i < AVS_MAX_SEQUENCE; j++ )
filter[i++] = all_purpose[j];
}
static AVS_Value update_clip( avs_hnd_t *h, const AVS_VideoInfo **vi, AVS_Value res, AVS_Value release )
{
h->func.avs_release_clip( h->clip );
h->clip = h->func.avs_take_clip( res, h->env );
h->func.avs_release_value( release );
*vi = h->func.avs_get_video_info( h->clip );
return res;
}
static float get_avs_version( avs_hnd_t *h )
{
FAIL_IF_ERROR( !h->func.avs_function_exists( h->env, "VersionNumber" ), "VersionNumber does not exist\n" );
AVS_Value ver = h->func.avs_invoke( h->env, "VersionNumber", avs_new_value_array( NULL, 0 ), NULL );
FAIL_IF_ERROR( avs_is_error( ver ), "unable to determine avisynth version: %s\n", avs_as_error( ver ) );
FAIL_IF_ERROR( !avs_is_float( ver ), "VersionNumber did not return a float value\n" );
float ret = avs_as_float( ver );
h->func.avs_release_value( ver );
return ret;
}
#ifdef _WIN32
static char *utf16_to_ansi( const wchar_t *utf16 )
{
BOOL invalid;
int len = WideCharToMultiByte( CP_ACP, WC_NO_BEST_FIT_CHARS, utf16, -1, NULL, 0, NULL, &invalid );
if( len && !invalid )
{
char *ansi = malloc( len * sizeof( char ) );
if( ansi )
{
if( WideCharToMultiByte( CP_ACP, WC_NO_BEST_FIT_CHARS, utf16, -1, ansi, len, NULL, &invalid ) && !invalid )
return ansi;
free( ansi );
}
}
return NULL;
}
static char *utf8_to_ansi( const char *filename )
{
char *ansi = NULL;
wchar_t *filename_utf16 = x264_utf8_to_utf16( filename );
if( filename_utf16 )
{
/* Check if the filename already is valid ANSI. */
if( !(ansi = utf16_to_ansi( filename_utf16 )) )
{
/* Check for a legacy 8.3 short filename. */
int len = GetShortPathNameW( filename_utf16, NULL, 0 );
if( len )
{
wchar_t *short_utf16 = malloc( len * sizeof( wchar_t ) );
if( short_utf16 )
{
if( GetShortPathNameW( filename_utf16, short_utf16, len ) )
ansi = utf16_to_ansi( short_utf16 );
free( short_utf16 );
}
}
}
free( filename_utf16 );
}
return ansi;
}
#endif
static int open_file( char *psz_filename, hnd_t *p_handle, video_info_t *info, cli_input_opt_t *opt )
{
FILE *fh = x264_fopen( psz_filename, "r" );
if( !fh )
return -1;
int b_regular = x264_is_regular_file( fh );
fclose( fh );
FAIL_IF_ERROR( !b_regular, "AVS input is incompatible with non-regular file `%s'\n", psz_filename );
avs_hnd_t *h = calloc( 1, sizeof(avs_hnd_t) );
if( !h )
return -1;
FAIL_IF_ERROR( custom_avs_load_library( h ), "failed to load avisynth\n" );
h->env = h->func.avs_create_script_environment( AVS_INTERFACE_25 );
if( h->func.avs_get_error )
{
const char *error = h->func.avs_get_error( h->env );
FAIL_IF_ERROR( error, "%s\n", error );
}
float avs_version = get_avs_version( h );
if( avs_version <= 0 )
return -1;
x264_cli_log( "avs", X264_LOG_DEBUG, "using avisynth version %.2f\n", avs_version );
#ifdef _WIN32
/* Avisynth doesn't support Unicode filenames. */
char *ansi_filename = utf8_to_ansi( psz_filename );
FAIL_IF_ERROR( !ansi_filename, "invalid ansi filename\n" );
AVS_Value arg = avs_new_value_string( ansi_filename );
#else
AVS_Value arg = avs_new_value_string( psz_filename );
#endif
AVS_Value res;
char *filename_ext = get_filename_extension( psz_filename );
if( !strcasecmp( filename_ext, "avs" ) )
{
res = h->func.avs_invoke( h->env, "Import", arg, NULL );
#ifdef _WIN32
free( ansi_filename );
#endif
FAIL_IF_ERROR( avs_is_error( res ), "%s\n", avs_as_error( res ) );
/* check if the user is using a multi-threaded script and apply distributor if necessary.
adapted from avisynth's vfw interface */
AVS_Value mt_test = h->func.avs_invoke( h->env, "GetMTMode", avs_new_value_bool( 0 ), NULL );
int mt_mode = avs_is_int( mt_test ) ? avs_as_int( mt_test ) : 0;
h->func.avs_release_value( mt_test );
if( mt_mode > 0 && mt_mode < 5 )
{
AVS_Value temp = h->func.avs_invoke( h->env, "Distributor", res, NULL );
h->func.avs_release_value( res );
res = temp;
}
}
else /* non script file */
{
/* cycle through known source filters to find one that works */
const char *filter[AVS_MAX_SEQUENCE+1] = { 0 };
avs_build_filter_sequence( filename_ext, filter );
int i;
for( i = 0; filter[i]; i++ )
{
x264_cli_log( "avs", X264_LOG_INFO, "trying %s... ", filter[i] );
if( !h->func.avs_function_exists( h->env, filter[i] ) )
{
x264_cli_printf( X264_LOG_INFO, "not found\n" );
continue;
}
if( !strncasecmp( filter[i], "FFmpegSource", 12 ) )
{
x264_cli_printf( X264_LOG_INFO, "indexing... " );
fflush( stderr );
}
res = h->func.avs_invoke( h->env, filter[i], arg, NULL );
if( !avs_is_error( res ) )
{
x264_cli_printf( X264_LOG_INFO, "succeeded\n" );
break;
}
x264_cli_printf( X264_LOG_INFO, "failed\n" );
}
#ifdef _WIN32
free( ansi_filename );
#endif
FAIL_IF_ERROR( !filter[i], "unable to find source filter to open `%s'\n", psz_filename );
}
FAIL_IF_ERROR( !avs_is_clip( res ), "`%s' didn't return a video clip\n", psz_filename );
h->clip = h->func.avs_take_clip( res, h->env );
const AVS_VideoInfo *vi = h->func.avs_get_video_info( h->clip );
FAIL_IF_ERROR( !avs_has_video( vi ), "`%s' has no video data\n", psz_filename );
/* if the clip is made of fields instead of frames, call weave to make them frames */
if( avs_is_field_based( vi ) )
{
x264_cli_log( "avs", X264_LOG_WARNING, "detected fieldbased (separated) input, weaving to frames\n" );
AVS_Value tmp = h->func.avs_invoke( h->env, "Weave", res, NULL );
FAIL_IF_ERROR( avs_is_error( tmp ), "couldn't weave fields into frames: %s\n", avs_as_error( tmp ) );
res = update_clip( h, &vi, tmp, res );
info->interlaced = 1;
info->tff = avs_is_tff( vi );
}
#if !HAVE_SWSCALE
/* if swscale is not available, convert the CSP if necessary */
FAIL_IF_ERROR( avs_version < 2.6f && (opt->output_csp == X264_CSP_I400 || opt->output_csp == X264_CSP_I422 || opt->output_csp == X264_CSP_I444),
"avisynth >= 2.6 is required for i400/i422/i444 output\n" );
if( (opt->output_csp == X264_CSP_I400 && !AVS_IS_Y( vi )) ||
(opt->output_csp == X264_CSP_I420 && !AVS_IS_420( vi )) ||
(opt->output_csp == X264_CSP_I422 && !AVS_IS_422( vi )) ||
(opt->output_csp == X264_CSP_I444 && !AVS_IS_444( vi )) ||
(opt->output_csp == X264_CSP_RGB && !avs_is_rgb( vi )) )
{
const char *csp;
if( AVS_IS_AVISYNTHPLUS )
{
csp = opt->output_csp == X264_CSP_I400 ? "Y" :
opt->output_csp == X264_CSP_I420 ? "YUV420" :
opt->output_csp == X264_CSP_I422 ? "YUV422" :
opt->output_csp == X264_CSP_I444 ? "YUV444" :
"RGB";
}
else
{
csp = opt->output_csp == X264_CSP_I400 ? "Y8" :
opt->output_csp == X264_CSP_I420 ? "YV12" :
opt->output_csp == X264_CSP_I422 ? "YV16" :
opt->output_csp == X264_CSP_I444 ? "YV24" :
"RGB";
}
x264_cli_log( "avs", X264_LOG_WARNING, "converting input clip to %s\n", csp );
if( opt->output_csp != X264_CSP_I400 )
{
FAIL_IF_ERROR( opt->output_csp < X264_CSP_I444 && (vi->width&1),
"input clip width not divisible by 2 (%dx%d)\n", vi->width, vi->height );
FAIL_IF_ERROR( opt->output_csp == X264_CSP_I420 && info->interlaced && (vi->height&3),
"input clip height not divisible by 4 (%dx%d)\n", vi->width, vi->height );
FAIL_IF_ERROR( (opt->output_csp == X264_CSP_I420 || info->interlaced) && (vi->height&1),
"input clip height not divisible by 2 (%dx%d)\n", vi->width, vi->height );
}
char conv_func[16];
snprintf( conv_func, sizeof(conv_func), "ConvertTo%s", csp );
AVS_Value arg_arr[3];
const char *arg_name[3];
int arg_count = 1;
arg_arr[0] = res;
arg_name[0] = NULL;
if( opt->output_csp != X264_CSP_I400 )
{
arg_arr[arg_count] = avs_new_value_bool( info->interlaced );
arg_name[arg_count] = "interlaced";
arg_count++;
}
/* if doing a rgb <-> yuv conversion then range is handled via 'matrix'. though it's only supported in 2.56+ */
char matrix[7];
if( avs_version >= 2.56f && ((opt->output_csp == X264_CSP_RGB && avs_is_yuv( vi )) || (opt->output_csp != X264_CSP_RGB && avs_is_rgb( vi ))) )
{
// if converting from yuv, then we specify the matrix for the input, otherwise use the output's.
int use_pc_matrix = avs_is_yuv( vi ) ? opt->input_range == RANGE_PC : opt->output_range == RANGE_PC;
snprintf( matrix, sizeof(matrix), "%s601", use_pc_matrix ? "PC." : "Rec" ); /* FIXME: use correct coefficients */
arg_arr[arg_count] = avs_new_value_string( matrix );
arg_name[arg_count] = "matrix";
arg_count++;
// notification that the input range has changed to the desired one
opt->input_range = opt->output_range;
}
AVS_Value res2 = h->func.avs_invoke( h->env, conv_func, avs_new_value_array( arg_arr, arg_count ), arg_name );
FAIL_IF_ERROR( avs_is_error( res2 ), "couldn't convert input clip to %s: %s\n", csp, avs_as_error( res2 ) );
res = update_clip( h, &vi, res2, res );
}
/* if swscale is not available, change the range if necessary. This only applies to YUV-based CSPs however */
if( avs_is_yuv( vi ) && opt->output_range != RANGE_AUTO && ((opt->input_range == RANGE_PC) != opt->output_range) )
{
const char *levels = opt->output_range ? "TV->PC" : "PC->TV";
x264_cli_log( "avs", X264_LOG_WARNING, "performing %s conversion\n", levels );
AVS_Value arg_arr[2];
arg_arr[0] = res;
arg_arr[1] = avs_new_value_string( levels );
const char *arg_name[] = { NULL, "levels" };
AVS_Value res2 = h->func.avs_invoke( h->env, "ColorYUV", avs_new_value_array( arg_arr, 2 ), arg_name );
FAIL_IF_ERROR( avs_is_error( res2 ), "couldn't convert range: %s\n", avs_as_error( res2 ) );
res = update_clip( h, &vi, res2, res );
// notification that the input range has changed to the desired one
opt->input_range = opt->output_range;
}
#endif
h->func.avs_release_value( res );
info->width = vi->width;
info->height = vi->height;
info->fps_num = vi->fps_numerator;
info->fps_den = vi->fps_denominator;
h->num_frames = info->num_frames = vi->num_frames;
info->thread_safe = 1;
if( AVS_IS_RGB64( vi ) )
info->csp = X264_CSP_BGRA | X264_CSP_VFLIP | X264_CSP_HIGH_DEPTH;
else if( avs_is_rgb32( vi ) )
info->csp = X264_CSP_BGRA | X264_CSP_VFLIP;
else if( AVS_IS_RGB48( vi ) )
info->csp = X264_CSP_BGR | X264_CSP_VFLIP | X264_CSP_HIGH_DEPTH;
else if( avs_is_rgb24( vi ) )
info->csp = X264_CSP_BGR | X264_CSP_VFLIP;
else if( AVS_IS_YUV444P16( vi ) )
info->csp = X264_CSP_I444 | X264_CSP_HIGH_DEPTH;
else if( AVS_IS_YV24( vi ) )
info->csp = X264_CSP_I444;
else if( AVS_IS_YUV422P16( vi ) )
info->csp = X264_CSP_I422 | X264_CSP_HIGH_DEPTH;
else if( AVS_IS_YV16( vi ) )
info->csp = X264_CSP_I422;
else if( AVS_IS_YUV420P16( vi ) )
info->csp = X264_CSP_I420 | X264_CSP_HIGH_DEPTH;
else if( AVS_IS_YV12( vi ) )
info->csp = X264_CSP_I420;
else if( AVS_IS_Y16( vi ) )
info->csp = X264_CSP_I400 | X264_CSP_HIGH_DEPTH;
else if( AVS_IS_Y8( vi ) )
info->csp = X264_CSP_I400;
else if( avs_is_yuy2( vi ) )
info->csp = X264_CSP_YUYV;
#if HAVE_SWSCALE
else if( AVS_IS_YV411( vi ) )
info->csp = AV_PIX_FMT_YUV411P | X264_CSP_OTHER;
#endif
else
{
AVS_Value pixel_type = h->func.avs_invoke( h->env, "PixelType", res, NULL );
const char *pixel_type_name = avs_is_string( pixel_type ) ? avs_as_string( pixel_type ) : "unknown";
FAIL_IF_ERROR( 1, "not supported pixel type: %s\n", pixel_type_name );
}
info->vfr = 0;
*p_handle = h;
return 0;
}
static int picture_alloc( cli_pic_t *pic, hnd_t handle, int csp, int width, int height )
{
if( x264_cli_pic_alloc( pic, X264_CSP_NONE, width, height ) )
return -1;
pic->img.csp = csp;
const x264_cli_csp_t *cli_csp = x264_cli_get_csp( csp );
if( cli_csp )
pic->img.planes = cli_csp->planes;
#if HAVE_SWSCALE
else if( csp == (AV_PIX_FMT_YUV411P | X264_CSP_OTHER) )
pic->img.planes = 3;
else
pic->img.planes = 1; //y8 and yuy2 are one plane
#endif
return 0;
}
static int read_frame( cli_pic_t *pic, hnd_t handle, int i_frame )
{
static const int plane[3] = { AVS_PLANAR_Y, AVS_PLANAR_U, AVS_PLANAR_V };
avs_hnd_t *h = handle;
if( i_frame >= h->num_frames )
return -1;
AVS_VideoFrame *frm = pic->opaque = h->func.avs_get_frame( h->clip, i_frame );
const char *err = h->func.avs_clip_get_error( h->clip );
FAIL_IF_ERROR( err, "%s occurred while reading frame %d\n", err, i_frame );
for( int i = 0; i < pic->img.planes; i++ )
{
/* explicitly cast away the const attribute to avoid a warning */
pic->img.plane[i] = (uint8_t*)AVS_GET_READ_PTR_P( frm, plane[i] );
pic->img.stride[i] = AVS_GET_PITCH_P( frm, plane[i] );
}
return 0;
}
static int release_frame( cli_pic_t *pic, hnd_t handle )
{
avs_hnd_t *h = handle;
h->func.avs_release_video_frame( pic->opaque );
return 0;
}
static void picture_clean( cli_pic_t *pic, hnd_t handle )
{
memset( pic, 0, sizeof(cli_pic_t) );
}
static int close_file( hnd_t handle )
{
avs_hnd_t *h = handle;
if( h->func.avs_release_clip && h->clip )
h->func.avs_release_clip( h->clip );
if( h->func.avs_delete_script_environment && h->env )
h->func.avs_delete_script_environment( h->env );
if( h->library )
avs_close( h->library );
free( h );
return 0;
}
const cli_input_t avs_input = { open_file, picture_alloc, read_frame, release_frame, picture_clean, close_file };