/*****************************************************************************
* input.c: common input functions
*****************************************************************************
- * Copyright (C) 2010-2014 x264 project
+ * Copyright (C) 2010-2016 x264 project
*
* Authors: Steven Walters <kemuri9@gmail.com>
+ * Henrik Gramner <henrik@gramner.com>
*
* 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
#include "input.h"
+#ifdef _WIN32
+#include <io.h>
+#include <windows.h>
+#elif HAVE_MMAP
+#include <sys/mman.h>
+#include <unistd.h>
+#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_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 },
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 & X264_CSP_OTHER;
+ 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 )
return size;
}
-static int x264_cli_pic_alloc_internal( cli_pic_t *pic, int csp, int width, int height, int align )
+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;
int stride = width * x264_cli_csps[csp_mask].width[i];
stride *= x264_cli_csp_depth_factor( csp );
stride = ALIGN( stride, align );
- uint64_t size = (uint64_t)(height * x264_cli_csps[csp_mask].height[i]) * stride;
- pic->img.plane[i] = x264_malloc( size );
- if( !pic->img.plane[i] )
- return -1;
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_alloc_internal( pic, csp, width, height, 1 );
+ 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_alloc_internal( pic, csp, width, height, NATIVE_ALIGN );
+ 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 )
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
+}
projects / x264 / blobdiff