/***************************************************************************** * input.c: common input functions ***************************************************************************** * Copyright (C) 2010-2016 x264 project * * Authors: Steven Walters * Henrik Gramner * * 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" #ifdef _WIN32 #include #include #elif HAVE_MMAP #include #include #endif const x264_cli_csp_t x264_cli_csps[] = { [X264_CSP_I420] = { "i420", 3, { 1, .5, .5 }, { 1, .5, .5 }, 2, 2 }, [X264_CSP_I422] = { "i422", 3, { 1, .5, .5 }, { 1, 1, 1 }, 2, 1 }, [X264_CSP_I444] = { "i444", 3, { 1, 1, 1 }, { 1, 1, 1 }, 1, 1 }, [X264_CSP_YV12] = { "yv12", 3, { 1, .5, .5 }, { 1, .5, .5 }, 2, 2 }, [X264_CSP_YV16] = { "yv16", 3, { 1, .5, .5 }, { 1, 1, 1 }, 2, 1 }, [X264_CSP_YV24] = { "yv24", 3, { 1, 1, 1 }, { 1, 1, 1 }, 1, 1 }, [X264_CSP_NV12] = { "nv12", 2, { 1, 1 }, { 1, .5 }, 2, 2 }, [X264_CSP_NV21] = { "nv21", 2, { 1, 1 }, { 1, .5 }, 2, 2 }, [X264_CSP_NV16] = { "nv16", 2, { 1, 1 }, { 1, 1 }, 2, 1 }, [X264_CSP_BGR] = { "bgr", 1, { 3 }, { 1 }, 1, 1 }, [X264_CSP_BGRA] = { "bgra", 1, { 4 }, { 1 }, 1, 1 }, [X264_CSP_RGB] = { "rgb", 1, { 3 }, { 1 }, 1, 1 }, }; int x264_cli_csp_is_invalid( int csp ) { int csp_mask = csp & X264_CSP_MASK; return csp_mask <= X264_CSP_NONE || csp_mask >= X264_CSP_CLI_MAX || csp_mask == X264_CSP_V210 || csp & X264_CSP_OTHER; } int x264_cli_csp_depth_factor( int csp ) { if( x264_cli_csp_is_invalid( csp ) ) return 0; return (csp & X264_CSP_HIGH_DEPTH) ? 2 : 1; } uint64_t x264_cli_pic_plane_size( int csp, int width, int height, int plane ) { int csp_mask = csp & X264_CSP_MASK; if( x264_cli_csp_is_invalid( csp ) || plane < 0 || plane >= x264_cli_csps[csp_mask].planes ) return 0; uint64_t size = (uint64_t)width * height; size *= x264_cli_csps[csp_mask].width[plane] * x264_cli_csps[csp_mask].height[plane]; size *= x264_cli_csp_depth_factor( csp ); return size; } uint64_t x264_cli_pic_size( int csp, int width, int height ) { if( x264_cli_csp_is_invalid( csp ) ) return 0; uint64_t size = 0; int csp_mask = csp & X264_CSP_MASK; for( int i = 0; i < x264_cli_csps[csp_mask].planes; i++ ) size += x264_cli_pic_plane_size( csp, width, height, i ); return size; } static int x264_cli_pic_init_internal( cli_pic_t *pic, int csp, int width, int height, int align, int alloc ) { memset( pic, 0, sizeof(cli_pic_t) ); int csp_mask = csp & X264_CSP_MASK; if( x264_cli_csp_is_invalid( csp ) ) pic->img.planes = 0; else pic->img.planes = x264_cli_csps[csp_mask].planes; pic->img.csp = csp; pic->img.width = width; pic->img.height = height; for( int i = 0; i < pic->img.planes; i++ ) { int stride = width * x264_cli_csps[csp_mask].width[i]; stride *= x264_cli_csp_depth_factor( csp ); stride = ALIGN( stride, align ); pic->img.stride[i] = stride; if( alloc ) { size_t size = (size_t)(height * x264_cli_csps[csp_mask].height[i]) * stride; pic->img.plane[i] = x264_malloc( size ); if( !pic->img.plane[i] ) return -1; } } return 0; } int x264_cli_pic_alloc( cli_pic_t *pic, int csp, int width, int height ) { return x264_cli_pic_init_internal( pic, csp, width, height, 1, 1 ); } int x264_cli_pic_alloc_aligned( cli_pic_t *pic, int csp, int width, int height ) { return x264_cli_pic_init_internal( pic, csp, width, height, NATIVE_ALIGN, 1 ); } int x264_cli_pic_init_noalloc( cli_pic_t *pic, int csp, int width, int height ) { return x264_cli_pic_init_internal( pic, csp, width, height, 1, 0 ); } void x264_cli_pic_clean( cli_pic_t *pic ) { for( int i = 0; i < pic->img.planes; i++ ) x264_free( pic->img.plane[i] ); memset( pic, 0, sizeof(cli_pic_t) ); } const x264_cli_csp_t *x264_cli_get_csp( int csp ) { if( x264_cli_csp_is_invalid( csp ) ) return NULL; return x264_cli_csps + (csp&X264_CSP_MASK); } /* Functions for handling memory-mapped input frames */ int x264_cli_mmap_init( cli_mmap_t *h, FILE *fh ) { #ifdef _WIN32 HANDLE osfhandle = (HANDLE)_get_osfhandle( _fileno( fh ) ); if( osfhandle != INVALID_HANDLE_VALUE ) { SYSTEM_INFO si; GetSystemInfo( &si ); h->align_mask = si.dwAllocationGranularity - 1; h->map_handle = CreateFileMappingW( osfhandle, NULL, PAGE_READONLY, 0, 0, NULL ); return !h->map_handle; } #elif HAVE_MMAP && defined(_SC_PAGESIZE) h->align_mask = sysconf( _SC_PAGESIZE ) - 1; h->fd = fileno( fh ); return h->align_mask < 0 || h->fd < 0; #endif return -1; } void *x264_cli_mmap( cli_mmap_t *h, int64_t offset, size_t size ) { #if defined(_WIN32) || HAVE_MMAP int align = offset & h->align_mask; offset -= align; size += align; #ifdef _WIN32 uint8_t *base = MapViewOfFile( h->map_handle, FILE_MAP_READ, offset >> 32, offset, size ); /* TODO: Would PrefetchVirtualMemory() (only available on Win8+) be beneficial? */ if( base ) return base + align; #else uint8_t *base = mmap( NULL, size, PROT_READ, MAP_PRIVATE, h->fd, offset ); if( base != MAP_FAILED ) { /* Ask the OS to readahead pages. This improves performance whereas * forcing page faults by manually accessing every page does not. * Some systems have implemented madvise() but not posix_madvise() * and vice versa, so check both to see if either is available. */ #ifdef MADV_WILLNEED madvise( base, size, MADV_WILLNEED ); #elif defined(POSIX_MADV_WILLNEED) posix_madvise( base, size, POSIX_MADV_WILLNEED ); #endif return base + align; } #endif #endif return NULL; } int x264_cli_munmap( cli_mmap_t *h, void *addr, size_t size ) { #if defined(_WIN32) || HAVE_MMAP void *base = (void*)((intptr_t)addr & ~h->align_mask); #ifdef _WIN32 return !UnmapViewOfFile( base ); #else return munmap( base, size + (intptr_t)addr - (intptr_t)base ); #endif #endif return -1; } void x264_cli_mmap_close( cli_mmap_t *h ) { #ifdef _WIN32 CloseHandle( h->map_handle ); #endif }