1 /*
2  *  Copyright (c) 2013 The WebM project authors. All Rights Reserved.
3  *
4  *  Use of this source code is governed by a BSD-style license
5  *  that can be found in the LICENSE file in the root of the source
6  *  tree. An additional intellectual property rights grant can be found
7  *  in the file PATENTS.  All contributing project authors may
8  *  be found in the AUTHORS file in the root of the source tree.
9  */
10 #ifndef WEBMDEC_H_
11 #define WEBMDEC_H_
12 
13 #include "./tools_common.h"
14 
15 #ifdef __cplusplus
16 extern "C" {
17 #endif
18 
19 struct nestegg;
20 struct nestegg_packet;
21 struct VpxInputContext;
22 
23 struct WebmInputContext {
24   uint32_t chunk;
25   uint32_t chunks;
26   uint32_t video_track;
27   struct nestegg *nestegg_ctx;
28   struct nestegg_packet *pkt;
29 };
30 
31 int file_is_webm(struct WebmInputContext *webm_ctx,
32                  struct VpxInputContext *vpx_ctx);
33 
34 int webm_read_frame(struct WebmInputContext *webm_ctx,
35                     uint8_t **buffer,
36                     size_t *bytes_in_buffer,
37                     size_t *buffer_size);
38 
39 int webm_guess_framerate(struct WebmInputContext *webm_ctx,
40                          struct VpxInputContext *vpx_ctx);
41 
42 void webm_free(struct WebmInputContext *webm_ctx);
43 
44 #ifdef __cplusplus
45 }  // extern "C"
46 #endif
47 
48 #endif  // WEBMDEC_H_
49