X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavformat%2Ffile.c;h=cca9ec1a06478cbeff51e6ac6b9414cca3715cf1;hb=feb15cee5e19a1e31d075ec08d598d64c2dc38ef;hp=f61130694fd90bd5ea0ecb9a6950da26ed8ac698;hpb=b5298028b050d8c20d741c5219c1b0d2304c9391;p=ffmpeg

diff --git a/libavformat/file.c b/libavformat/file.c
index f61130694fd..cca9ec1a064 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -1,33 +1,71 @@
 /*
- * Buffered file io for ffmpeg system
+ * buffered file I/O
  * Copyright (c) 2001 Fabrice Bellard
  *
- * This file is part of FFmpeg.
+ * This file is part of Libav.
  *
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
+
+#include "libavutil/avstring.h"
 #include "avformat.h"
-#include "avstring.h"
 #include <fcntl.h>
+#if HAVE_SETMODE
+#include <io.h>
+#endif
 #include <unistd.h>
-#include <sys/time.h>
+#include <sys/stat.h>
 #include <stdlib.h>
+#include "os_support.h"
+#include "url.h"
 
 
 /* standard file protocol */
 
+static int file_read(URLContext *h, unsigned char *buf, int size)
+{
+    int fd = (intptr_t) h->priv_data;
+    return read(fd, buf, size);
+}
+
+static int file_write(URLContext *h, const unsigned char *buf, int size)
+{
+    int fd = (intptr_t) h->priv_data;
+    return write(fd, buf, size);
+}
+
+static int file_get_handle(URLContext *h)
+{
+    return (intptr_t) h->priv_data;
+}
+
+static int file_check(URLContext *h, int mask)
+{
+    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;
+
+    return ret;
+}
+
+#if CONFIG_FILE_PROTOCOL
+
 static int file_open(URLContext *h, const char *filename, int flags)
 {
     int access;
@@ -35,9 +73,9 @@ static int file_open(URLContext *h, const char *filename, int flags)
 
     av_strstart(filename, "file:", &filename);
 
-    if (flags & URL_RDWR) {
+    if (flags & AVIO_FLAG_WRITE && flags & AVIO_FLAG_READ) {
         access = O_CREAT | O_TRUNC | O_RDWR;
-    } else if (flags & URL_WRONLY) {
+    } else if (flags & AVIO_FLAG_WRITE) {
         access = O_CREAT | O_TRUNC | O_WRONLY;
     } else {
         access = O_RDONLY;
@@ -46,73 +84,74 @@ static int file_open(URLContext *h, const char *filename, int flags)
     access |= O_BINARY;
 #endif
     fd = open(filename, access, 0666);
-    if (fd < 0)
-        return AVERROR(ENOENT);
-    h->priv_data = (void *)(size_t)fd;
+    if (fd == -1)
+        return AVERROR(errno);
+    h->priv_data = (void *) (intptr_t) fd;
     return 0;
 }
 
-static int file_read(URLContext *h, unsigned char *buf, int size)
-{
-    int fd = (size_t)h->priv_data;
-    return read(fd, buf, size);
-}
-
-static int file_write(URLContext *h, unsigned char *buf, int size)
-{
-    int fd = (size_t)h->priv_data;
-    return write(fd, buf, size);
-}
-
 /* XXX: use llseek */
-static offset_t file_seek(URLContext *h, offset_t pos, int whence)
+static int64_t file_seek(URLContext *h, int64_t pos, int whence)
 {
-    int fd = (size_t)h->priv_data;
+    int fd = (intptr_t) h->priv_data;
+    if (whence == AVSEEK_SIZE) {
+        struct stat st;
+        int ret = fstat(fd, &st);
+        return ret < 0 ? AVERROR(errno) : st.st_size;
+    }
     return lseek(fd, pos, whence);
 }
 
 static int file_close(URLContext *h)
 {
-    int fd = (size_t)h->priv_data;
+    int fd = (intptr_t) h->priv_data;
     return close(fd);
 }
 
-URLProtocol file_protocol = {
-    "file",
-    file_open,
-    file_read,
-    file_write,
-    file_seek,
-    file_close,
+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,
 };
 
-/* pipe protocol */
+#endif /* CONFIG_FILE_PROTOCOL */
+
+#if CONFIG_PIPE_PROTOCOL
 
 static int pipe_open(URLContext *h, const char *filename, int flags)
 {
     int fd;
-    const char * final;
+    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 & URL_WRONLY) {
+        if (flags & AVIO_FLAG_WRITE) {
             fd = 1;
         } else {
             fd = 0;
         }
     }
-#ifdef O_BINARY
+#if HAVE_SETMODE
     setmode(fd, O_BINARY);
 #endif
-    h->priv_data = (void *)(size_t)fd;
+    h->priv_data = (void *) (intptr_t) fd;
     h->is_streamed = 1;
     return 0;
 }
 
-URLProtocol pipe_protocol = {
-    "pipe",
-    pipe_open,
-    file_read,
-    file_write,
+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,
 };
+
+#endif /* CONFIG_PIPE_PROTOCOL */