1 files changed, 71 insertions, 0 deletions
diff --git a/third_party/aom/common/webmenc.h b/third_party/aom/common/webmenc.h
new file mode 100644
index 0000000000..c912208b45
--- /dev/null
+++ b/third_party/aom/common/webmenc.h
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2016, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+#ifndef AOM_COMMON_WEBMENC_H_
+#define AOM_COMMON_WEBMENC_H_
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "tools_common.h"
+#include "aom/aom_encoder.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct WebmOutputContext {
+  int debug;
+  FILE *stream;
+  int64_t last_pts_ns;
+  void *writer;
+  void *segment;
+};
+
+/* Stereo 3D packed frame format */
+enum {
+  STEREO_FORMAT_MONO = 0,
+  STEREO_FORMAT_LEFT_RIGHT = 1,
+  STEREO_FORMAT_BOTTOM_TOP = 2,
+  STEREO_FORMAT_TOP_BOTTOM = 3,
+  STEREO_FORMAT_RIGHT_LEFT = 11
+} UENUM1BYTE(stereo_format_t);
+
+// Simplistic mechanism to extract encoder settings, without having
+// to re-invoke the entire flag-parsing logic. It lists the codec version
+// and then copies the arguments as-is from argv, but skips the binary name,
+// any arguments that match the input filename, and the output flags "-o"
+// and "--output" (and the following argument for those flags). The caller
+// is responsible for free-ing the returned string. If there is insufficient
+// memory, it returns nullptr.
+char *extract_encoder_settings(const char *version, const char **argv, int argc,
+                               const char *input_fname);
+
+// The following functions wrap libwebm's mkvmuxer. All functions return 0 upon
+// success, or -1 upon failure.
+
+int write_webm_file_header(struct WebmOutputContext *webm_ctx,
+                           aom_codec_ctx_t *encoder_ctx,
+                           const aom_codec_enc_cfg_t *cfg,
+                           stereo_format_t stereo_fmt, unsigned int fourcc,
+                           const struct AvxRational *par,
+                           const char *encoder_settings);
+
+int write_webm_block(struct WebmOutputContext *webm_ctx,
+                     const aom_codec_enc_cfg_t *cfg,
+                     const aom_codec_cx_pkt_t *pkt);
+
+int write_webm_file_footer(struct WebmOutputContext *webm_ctx);
+
+#ifdef __cplusplus
+}  // extern "C"
+#endif
+
+#endif  // AOM_COMMON_WEBMENC_H_