diff options
Diffstat (limited to 'ffmpeg1/libavformat/file.c')
| -rw-r--r-- | ffmpeg1/libavformat/file.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/ffmpeg1/libavformat/file.c b/ffmpeg1/libavformat/file.c deleted file mode 100644 index e09a64b..0000000 --- a/ffmpeg1/libavformat/file.c +++ /dev/null @@ -1,218 +0,0 @@ -/* - * buffered file I/O - * Copyright (c) 2001 Fabrice Bellard - * - * This file is part of FFmpeg. - * - * FFmpeg is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; either - * version 2.1 of the License, or (at your option) any later version. - * - * FFmpeg 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 - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with FFmpeg; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include "libavutil/avstring.h" -#include "libavutil/opt.h" -#include "avformat.h" -#include <fcntl.h> -#if HAVE_IO_H -#include <io.h> -#endif -#if HAVE_UNISTD_H -#include <unistd.h> -#endif -#include <sys/stat.h> -#include <stdlib.h> -#include "os_support.h" -#include "url.h" - -/* Some systems may not have S_ISFIFO */ -#ifndef S_ISFIFO -# ifdef S_IFIFO -# define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) -# else -# define S_ISFIFO(m) 0 -# endif -#endif - -/* standard file protocol */ - -typedef struct FileContext { - const AVClass *class; - int fd; - int trunc; -} FileContext; - -static const AVOption file_options[] = { - { "truncate", "Truncate existing files on write", offsetof(FileContext, trunc), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, 1, AV_OPT_FLAG_ENCODING_PARAM }, - { NULL } -}; - -static const AVClass file_class = { - .class_name = "file", - .item_name = av_default_item_name, - .option = file_options, - .version = LIBAVUTIL_VERSION_INT, -}; - -static int file_read(URLContext *h, unsigned char *buf, int size) -{ - FileContext *c = h->priv_data; - int r = read(c->fd, buf, size); - return (-1 == r)?AVERROR(errno):r; -} - -static int file_write(URLContext *h, const unsigned char *buf, int size) -{ - FileContext *c = h->priv_data; - int r = write(c->fd, buf, size); - return (-1 == r)?AVERROR(errno):r; -} - -static int file_get_handle(URLContext *h) -{ - FileContext *c = h->priv_data; - return c->fd; -} - -static int file_check(URLContext *h, int mask) -{ -#if HAVE_ACCESS && defined(R_OK) - int ret = 0; - if (access(h->filename, F_OK) < 0) - return AVERROR(errno); - if (mask&AVIO_FLAG_READ) - if (access(h->filename, R_OK) >= 0) - ret |= AVIO_FLAG_READ; - if (mask&AVIO_FLAG_WRITE) - if (access(h->filename, W_OK) >= 0) - ret |= AVIO_FLAG_WRITE; -#else - struct stat st; - int ret = stat(h->filename, &st); - if (ret < 0) - return AVERROR(errno); - - ret |= st.st_mode&S_IRUSR ? mask&AVIO_FLAG_READ : 0; - ret |= st.st_mode&S_IWUSR ? mask&AVIO_FLAG_WRITE : 0; -#endif - return ret; -} - -#if CONFIG_FILE_PROTOCOL - -static int file_open(URLContext *h, const char *filename, int flags) -{ - FileContext *c = h->priv_data; - int access; - int fd; - struct stat st; - - av_strstart(filename, "file:", &filename); - - if (flags & AVIO_FLAG_WRITE && flags & AVIO_FLAG_READ) { - access = O_CREAT | O_RDWR; - if (c->trunc) - access |= O_TRUNC; - } else if (flags & AVIO_FLAG_WRITE) { - access = O_CREAT | O_WRONLY; - if (c->trunc) - access |= O_TRUNC; - } else { - access = O_RDONLY; - } -#ifdef O_BINARY - access |= O_BINARY; -#endif - fd = open(filename, access, 0666); - if (fd == -1) - return AVERROR(errno); - c->fd = fd; - - h->is_streamed = !fstat(fd, &st) && S_ISFIFO(st.st_mode); - - return 0; -} - -/* XXX: use llseek */ -static int64_t file_seek(URLContext *h, int64_t pos, int whence) -{ - FileContext *c = h->priv_data; - int64_t ret; - - if (whence == AVSEEK_SIZE) { - struct stat st; - ret = fstat(c->fd, &st); - return ret < 0 ? AVERROR(errno) : (S_ISFIFO(st.st_mode) ? 0 : st.st_size); - } - - ret = lseek(c->fd, pos, whence); - - return ret < 0 ? AVERROR(errno) : ret; -} - -static int file_close(URLContext *h) -{ - FileContext *c = h->priv_data; - return close(c->fd); -} - -URLProtocol ff_file_protocol = { - .name = "file", - .url_open = file_open, - .url_read = file_read, - .url_write = file_write, - .url_seek = file_seek, - .url_close = file_close, - .url_get_file_handle = file_get_handle, - .url_check = file_check, - .priv_data_size = sizeof(FileContext), - .priv_data_class = &file_class, -}; - -#endif /* CONFIG_FILE_PROTOCOL */ - -#if CONFIG_PIPE_PROTOCOL - -static int pipe_open(URLContext *h, const char *filename, int flags) -{ - FileContext *c = h->priv_data; - int fd; - char *final; - av_strstart(filename, "pipe:", &filename); - - fd = strtol(filename, &final, 10); - if((filename == final) || *final ) {/* No digits found, or something like 10ab */ - if (flags & AVIO_FLAG_WRITE) { - fd = 1; - } else { - fd = 0; - } - } -#if HAVE_SETMODE - setmode(fd, O_BINARY); -#endif - c->fd = fd; - h->is_streamed = 1; - return 0; -} - -URLProtocol ff_pipe_protocol = { - .name = "pipe", - .url_open = pipe_open, - .url_read = file_read, - .url_write = file_write, - .url_get_file_handle = file_get_handle, - .url_check = file_check, - .priv_data_size = sizeof(FileContext), -}; - -#endif /* CONFIG_PIPE_PROTOCOL */ |