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[FFmpeg-devel,v3,1/8] avformat/file: add fd option for pipe

Message ID tencent_CF81A835233EDB56BF9CF0E1CA5B74345909@qq.com
State Accepted
Commit 49b8f043ca3e39141929d8614876131be0a801a9
Headers show
Series [FFmpeg-devel,v3,1/8] avformat/file: add fd option for pipe | expand

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Commit Message

Zhao Zhili Dec. 14, 2022, 5:10 p.m. UTC
From: Zhao Zhili <zhilizhao@tencent.com>

---
 doc/protocols.texi    | 4 +++-
 libavformat/file.c    | 9 +++++++--
 libavformat/version.h | 2 +-
 3 files changed, 11 insertions(+), 4 deletions(-)

Comments

Zhao Zhili Dec. 28, 2022, 5:31 p.m. UTC | #1
On Thu, 2022-12-15 at 01:10 +0800, Zhao Zhili wrote:
> From: Zhao Zhili <zhilizhao@tencent.com>
> 
> ---
>  doc/protocols.texi    | 4 +++-
>  libavformat/file.c    | 9 +++++++--
>  libavformat/version.h | 2 +-
>  3 files changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/doc/protocols.texi b/doc/protocols.texi
> index d1c6fced7b..a686a7f0ac 100644
> --- a/doc/protocols.texi
> +++ b/doc/protocols.texi
> @@ -687,7 +687,7 @@ The accepted syntax is:
>  pipe:[@var{number}]
>  @end example
>  
> -@var{number} is the number corresponding to the file descriptor of
> the
> +If @option{fd} isn't specified, @var{number} is the number
> corresponding to the file descriptor of the
>  pipe (e.g. 0 for stdin, 1 for stdout, 2 for stderr).  If
> @var{number}
>  is not specified, by default the stdout file descriptor will be used
>  for writing, stdin for reading.
> @@ -714,6 +714,8 @@ Set I/O operation maximum block size, in bytes.
> Default value is
>  @code{INT_MAX}, which results in not limiting the requested block
> size.
>  Setting this value reasonably low improves user termination request
> reaction
>  time, which is valuable if data transmission is slow.
> +@item fd
> +Set file descriptor.
>  @end table
>  
>  Note that some formats (typically MOV), require the output protocol
> to
> diff --git a/libavformat/file.c b/libavformat/file.c
> index 6103c37b34..db619fcaac 100644
> --- a/libavformat/file.c
> +++ b/libavformat/file.c
> @@ -92,6 +92,7 @@ static const AVOption file_options[] = {
>  
>  static const AVOption pipe_options[] = {
>      { "blocksize", "set I/O operation maximum block size",
> offsetof(FileContext, blocksize), AV_OPT_TYPE_INT, { .i64 = INT_MAX
> }, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
> +    { "fd", "set file descriptor", offsetof(FileContext, fd),
> AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX,
> AV_OPT_FLAG_ENCODING_PARAM },
>      { NULL }
>  };
>  
> @@ -381,6 +382,8 @@ static int pipe_open(URLContext *h, const char
> *filename, int flags)
>      FileContext *c = h->priv_data;
>      int fd;
>      char *final;
> +
> +    if (c->fd < 0) {
>      av_strstart(filename, "pipe:", &filename);
>  
>      fd = strtol(filename, &final, 10);
> @@ -391,10 +394,12 @@ static int pipe_open(URLContext *h, const char
> *filename, int flags)
>              fd = 0;
>          }
>      }
> +    c->fd = fd;
> +    }
> +
>  #if HAVE_SETMODE
> -    setmode(fd, O_BINARY);
> +    setmode(c->fd, O_BINARY);
>  #endif
> -    c->fd = fd;
>      h->is_streamed = 1;
>      return 0;
>  }
> diff --git a/libavformat/version.h b/libavformat/version.h
> index a7e5a9ac66..63e753a3aa 100644
> --- a/libavformat/version.h
> +++ b/libavformat/version.h
> @@ -32,7 +32,7 @@
>  #include "version_major.h"
>  
>  #define LIBAVFORMAT_VERSION_MINOR  34
> -#define LIBAVFORMAT_VERSION_MICRO 102
> +#define LIBAVFORMAT_VERSION_MICRO 103
>  
>  #define LIBAVFORMAT_VERSION_INT
> AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
>                                                 LIBAVFORMAT_VERSION_M
> INOR, \

Ping for the patchset.
diff mbox series

Patch

diff --git a/doc/protocols.texi b/doc/protocols.texi
index d1c6fced7b..a686a7f0ac 100644
--- a/doc/protocols.texi
+++ b/doc/protocols.texi
@@ -687,7 +687,7 @@  The accepted syntax is:
 pipe:[@var{number}]
 @end example
 
-@var{number} is the number corresponding to the file descriptor of the
+If @option{fd} isn't specified, @var{number} is the number corresponding to the file descriptor of the
 pipe (e.g. 0 for stdin, 1 for stdout, 2 for stderr).  If @var{number}
 is not specified, by default the stdout file descriptor will be used
 for writing, stdin for reading.
@@ -714,6 +714,8 @@  Set I/O operation maximum block size, in bytes. Default value is
 @code{INT_MAX}, which results in not limiting the requested block size.
 Setting this value reasonably low improves user termination request reaction
 time, which is valuable if data transmission is slow.
+@item fd
+Set file descriptor.
 @end table
 
 Note that some formats (typically MOV), require the output protocol to
diff --git a/libavformat/file.c b/libavformat/file.c
index 6103c37b34..db619fcaac 100644
--- a/libavformat/file.c
+++ b/libavformat/file.c
@@ -92,6 +92,7 @@  static const AVOption file_options[] = {
 
 static const AVOption pipe_options[] = {
     { "blocksize", "set I/O operation maximum block size", offsetof(FileContext, blocksize), AV_OPT_TYPE_INT, { .i64 = INT_MAX }, 1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
+    { "fd", "set file descriptor", offsetof(FileContext, fd), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, AV_OPT_FLAG_ENCODING_PARAM },
     { NULL }
 };
 
@@ -381,6 +382,8 @@  static int pipe_open(URLContext *h, const char *filename, int flags)
     FileContext *c = h->priv_data;
     int fd;
     char *final;
+
+    if (c->fd < 0) {
     av_strstart(filename, "pipe:", &filename);
 
     fd = strtol(filename, &final, 10);
@@ -391,10 +394,12 @@  static int pipe_open(URLContext *h, const char *filename, int flags)
             fd = 0;
         }
     }
+    c->fd = fd;
+    }
+
 #if HAVE_SETMODE
-    setmode(fd, O_BINARY);
+    setmode(c->fd, O_BINARY);
 #endif
-    c->fd = fd;
     h->is_streamed = 1;
     return 0;
 }
diff --git a/libavformat/version.h b/libavformat/version.h
index a7e5a9ac66..63e753a3aa 100644
--- a/libavformat/version.h
+++ b/libavformat/version.h
@@ -32,7 +32,7 @@ 
 #include "version_major.h"
 
 #define LIBAVFORMAT_VERSION_MINOR  34
-#define LIBAVFORMAT_VERSION_MICRO 102
+#define LIBAVFORMAT_VERSION_MICRO 103
 
 #define LIBAVFORMAT_VERSION_INT AV_VERSION_INT(LIBAVFORMAT_VERSION_MAJOR, \
                                                LIBAVFORMAT_VERSION_MINOR, \