shithub: dav1d

Download patch

ref: 2118bc9fa326ffcfd59080868d95bd7b4bf94889
parent: 31634e36e28d33a89b44c6f4434e99563499e1b8
author: Thierry Foucu <tfoucu@gmail.com>
date: Fri Oct 26 09:02:25 EDT 2018 

Add a null muxer which will just drop the packet.

This is similar to --noblit of libaom


--- a/tools/meson.build
+++ b/tools/meson.build
@@ -38,6 +38,7 @@
     'input/input.c',
     'input/ivf.c',
     'output/md5.c',
+    'output/null.c',
     'output/output.c',
     'output/y4m2.c',
     'output/yuv.c',
--- /dev/null
+++ b/tools/output/null.c
@@ -1,0 +1,56 @@
+/*
+ * Copyright © 2018, VideoLAN and dav1d authors
+ * Copyright © 2018, Two Orioles, LLC
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#include "output/muxer.h"
+
+typedef struct MuxerPriv NullOutputContext;
+
+static int null_open(NullOutputContext *const c, const char *const file,
+                    const Dav1dPictureParameters *const p,
+                    const unsigned fps[2])
+{
+    return 0;
+}
+
+static int null_write(NullOutputContext *const c, Dav1dPicture *const p) {
+    dav1d_picture_unref(p);
+    return 0;
+}
+
+static void null_close(NullOutputContext *const c) {
+}
+
+const Muxer null_muxer = {
+    .priv_data_size = 0,
+    .name = "null",
+    .extension = "null",
+    .write_header = null_open,
+    .write_picture = null_write,
+    .write_trailer = null_close,
+};
--- a/tools/output/output.c
+++ b/tools/output/output.c
@@ -41,7 +41,7 @@
     const Muxer *impl;
 };
 
-#define MAX_NUM_MUXERS 3
+#define MAX_NUM_MUXERS 4
 static const Muxer *muxers[MAX_NUM_MUXERS];
 static int num_muxers = 0;
 
@@ -52,6 +52,7 @@
 }
 
 void init_muxers(void) {
+    register_muxer(null_muxer);
     register_muxer(md5_muxer);
     register_muxer(yuv_muxer);
     register_muxer(y4m2_muxer);