Declare the url_write buffer parameter as const

Originally committed as revision 23401 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/avio.c

@@ -184,7 +184,7 @@ int url_read_complete(URLContext *h, unsigned char *buf, int size)
     return len;
 }
 
-int url_write(URLContext *h, unsigned char *buf, int size)
+int url_write(URLContext *h, const unsigned char *buf, int size)
 {
     int ret;
     if (!(h->flags & (URL_WRONLY | URL_RDWR)))

libavformat/avio.h

@@ -112,7 +112,7 @@ int url_read(URLContext *h, unsigned char *buf, int size);
  * certain there was either an error or the end of file was reached.
  */
 int url_read_complete(URLContext *h, unsigned char *buf, int size);
-int url_write(URLContext *h, unsigned char *buf, int size);
+int url_write(URLContext *h, const unsigned char *buf, int size);
 
 /**
  * Changes the position that will be used by the next read/write
@@ -224,7 +224,7 @@ typedef struct URLProtocol {
     const char *name;
     int (*url_open)(URLContext *h, const char *url, int flags);
     int (*url_read)(URLContext *h, unsigned char *buf, int size);
-    int (*url_write)(URLContext *h, unsigned char *buf, int size);
+    int (*url_write)(URLContext *h, const unsigned char *buf, int size);
     int64_t (*url_seek)(URLContext *h, int64_t pos, int whence);
     int (*url_close)(URLContext *h);
     struct URLProtocol *next;

libavformat/file.c

@@ -64,7 +64,7 @@ static int file_read(URLContext *h, unsigned char *buf, int size)
     return read(fd, buf, size);
 }
 
-static int file_write(URLContext *h, unsigned char *buf, int 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);

libavformat/gopher.c

@@ -31,7 +31,7 @@ typedef struct {
     URLContext *hd;
 } GopherContext;
 
-static int gopher_write(URLContext *h, uint8_t *buf, int size)
+static int gopher_write(URLContext *h, const uint8_t *buf, int size)
 {
     GopherContext *s = h->priv_data;
     return url_write(s->hd, buf, size);

libavformat/http.c

@@ -49,7 +49,7 @@ typedef struct {
 
 static int http_connect(URLContext *h, const char *path, const char *hoststr,
                         const char *auth, int *new_location);
-static int http_write(URLContext *h, uint8_t *buf, int size);
+static int http_write(URLContext *h, const uint8_t *buf, int size);
 
 
 /* return non zero if error */
@@ -358,7 +358,7 @@ static int http_read(URLContext *h, uint8_t *buf, int size)
 }
 
 /* used only when posting data */
-static int http_write(URLContext *h, uint8_t *buf, int size)
+static int http_write(URLContext *h, const uint8_t *buf, int size)
 {
     char temp[11];  /* 32-bit hex + CRLF + nul */
     int ret;

libavformat/librtmp.c

@@ -109,7 +109,7 @@ fail:
     return rc;
 }
 
-static int rtmp_write(URLContext *s, uint8_t *buf, int size)
+static int rtmp_write(URLContext *s, const uint8_t *buf, int size)
 {
     RTMP *r = s->priv_data;
 

libavformat/rtmpproto.c

@@ -922,7 +922,7 @@ static int rtmp_read(URLContext *s, uint8_t *buf, int size)
     return orig_size;
 }
 
-static int rtmp_write(URLContext *h, uint8_t *buf, int size)
+static int rtmp_write(URLContext *h, const uint8_t *buf, int size)
 {
     RTMPContext *rt = h->priv_data;
     int size_temp = size;

libavformat/rtpproto.c

@@ -279,7 +279,7 @@ static int rtp_read(URLContext *h, uint8_t *buf, int size)
     return len;
 }
 
-static int rtp_write(URLContext *h, uint8_t *buf, int size)
+static int rtp_write(URLContext *h, const uint8_t *buf, int size)
 {
     RTPContext *s = h->priv_data;
     int ret;

libavformat/tcp.c

@@ -154,7 +154,7 @@ static int tcp_read(URLContext *h, uint8_t *buf, int size)
     }
 }
 
-static int tcp_write(URLContext *h, uint8_t *buf, int size)
+static int tcp_write(URLContext *h, const uint8_t *buf, int size)
 {
     TCPContext *s = h->priv_data;
     int ret, size1, fd_max, len;

libavformat/udp.c

@@ -456,7 +456,7 @@ static int udp_read(URLContext *h, uint8_t *buf, int size)
     return len;
 }
 
-static int udp_write(URLContext *h, uint8_t *buf, int size)
+static int udp_write(URLContext *h, const uint8_t *buf, int size)
 {
     UDPContext *s = h->priv_data;
     int ret;