1 /* 2 * Copyright (c) 2016, Alliance for Open Media. All rights reserved. 3 * 4 * This source code is subject to the terms of the BSD 2 Clause License and 5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License 6 * was not distributed with this source code in the LICENSE file, you can 7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open 8 * Media Patent License 1.0 was not distributed with this source code in the 9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent. 10 */ 11 #ifndef AOM_COMMON_WEBMENC_H_ 12 #define AOM_COMMON_WEBMENC_H_ 13 14 #include <stdio.h> 15 #include <stdlib.h> 16 17 #include "tools_common.h" 18 #include "aom/aom_encoder.h" 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 struct WebmOutputContext { 25 int debug; 26 FILE *stream; 27 int64_t last_pts_ns; 28 void *writer; 29 void *segment; 30 }; 31 32 /* Stereo 3D packed frame format */ 33 enum { 34 STEREO_FORMAT_MONO = 0, 35 STEREO_FORMAT_LEFT_RIGHT = 1, 36 STEREO_FORMAT_BOTTOM_TOP = 2, 37 STEREO_FORMAT_TOP_BOTTOM = 3, 38 STEREO_FORMAT_RIGHT_LEFT = 11 39 } UENUM1BYTE(stereo_format_t); 40 41 // Simplistic mechanism to extract encoder settings, without having 42 // to re-invoke the entire flag-parsing logic. It lists the codec version 43 // and then copies the arguments as-is from argv, but skips the binary name, 44 // any arguments that match the input filename, and the output flags "-o" 45 // and "--output" (and the following argument for those flags). The caller 46 // is responsible for free-ing the returned string. If there is insufficient 47 // memory, it returns nullptr. 48 char *extract_encoder_settings(const char *version, const char **argv, int argc, 49 const char *input_fname); 50 51 // The following functions wrap libwebm's mkvmuxer. All functions return 0 upon 52 // success, or -1 upon failure. 53 54 int write_webm_file_header(struct WebmOutputContext *webm_ctx, 55 aom_codec_ctx_t *encoder_ctx, 56 const aom_codec_enc_cfg_t *cfg, 57 stereo_format_t stereo_fmt, unsigned int fourcc, 58 const struct AvxRational *par, 59 const char *encoder_settings); 60 61 int write_webm_block(struct WebmOutputContext *webm_ctx, 62 const aom_codec_enc_cfg_t *cfg, 63 const aom_codec_cx_pkt_t *pkt); 64 65 int write_webm_file_footer(struct WebmOutputContext *webm_ctx); 66 67 #ifdef __cplusplus 68 } // extern "C" 69 #endif 70 71 #endif // AOM_COMMON_WEBMENC_H_ 72